| 1 | ///////////////////////////////////////////////////////////////////////////// |
| 2 | // Name: src/univ/textctrl.cpp |
| 3 | // Purpose: wxTextCtrl |
| 4 | // Author: Vadim Zeitlin |
| 5 | // Modified by: |
| 6 | // Created: 15.09.00 |
| 7 | // RCS-ID: $Id$ |
| 8 | // Copyright: (c) 2000 SciTech Software, Inc. (www.scitechsoft.com) |
| 9 | // Licence: wxWindows licence |
| 10 | ///////////////////////////////////////////////////////////////////////////// |
| 11 | |
| 12 | /* |
| 13 | TODO |
| 14 | |
| 15 | + 1. update vert scrollbar when any line length changes for WrapLines() |
| 16 | + 2. cursor movement ("Hello,^" -> "^verse!" on Arrow Down)? |
| 17 | -> maybe save the x position and use it instead of current in handling |
| 18 | DOWN/UP actions (this would make up/down always return the cursor to |
| 19 | the same location)? |
| 20 | 3. split file into chunks |
| 21 | +? 4. rewrite Replace() refresh logic to deal with wrapping lines |
| 22 | +? 5. cache info found by GetPartOfWrappedLine() - performance must be horrible |
| 23 | with lots of text |
| 24 | |
| 25 | 6. backspace refreshes too much (until end of line) |
| 26 | */ |
| 27 | |
| 28 | /* |
| 29 | Optimisation hints from PureQuantify: |
| 30 | |
| 31 | +1. wxStringTokenize is the slowest part of Replace |
| 32 | 2. GetDC/ReleaseDC are very slow, avoid calling them several times |
| 33 | +3. GetCharHeight() should be cached too |
| 34 | 4. wxClientDC construction/destruction in HitTestLine is horribly expensive |
| 35 | |
| 36 | For line wrapping controls HitTest2 takes 50% of program time. The results |
| 37 | of GetRowsPerLine and GetPartOfWrappedLine *MUST* be cached. |
| 38 | |
| 39 | Search for "OPT!" for things which must be optimized. |
| 40 | */ |
| 41 | |
| 42 | /* |
| 43 | Some terminology: |
| 44 | |
| 45 | Everywhere in this file LINE refers to a logical line of text, and ROW to a |
| 46 | physical line of text on the display. They are the same unless WrapLines() |
| 47 | is true in which case a single LINE may correspond to multiple ROWs. |
| 48 | |
| 49 | A text position is an unsigned int (which for reasons of compatibility is |
| 50 | still a long as wxTextPos) from 0 to GetLastPosition() inclusive. The positions |
| 51 | correspond to the gaps between the letters so the position 0 is just |
| 52 | before the first character and the last position is the one beyond the last |
| 53 | character. For an empty text control GetLastPosition() returns 0. |
| 54 | |
| 55 | Lines and columns returned/accepted by XYToPosition() and PositionToXY() |
| 56 | start from 0. The y coordinate is a LINE, not a ROW. Columns correspond to |
| 57 | the characters, the first column of a line is the first character in it, |
| 58 | the last one is length(line text). For compatibility, again, lines and |
| 59 | columns are also longs. |
| 60 | |
| 61 | When translating lines/column coordinates to/from positions, the line and |
| 62 | column give the character after the given position. Thus, GetLastPosition() |
| 63 | doesn't have any corresponding column. |
| 64 | |
| 65 | An example of positions and lines/columns for a control without wrapping |
| 66 | containing the text "Hello, Universe!\nGoodbye" |
| 67 | |
| 68 | 1 1 1 1 1 1 1 |
| 69 | pos: 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 |
| 70 | H e l l o , U n i v e r s e ! line 0 |
| 71 | col: 0 1 2 3 4 5 6 7 8 9 1 1 1 1 1 1 |
| 72 | 0 1 2 3 4 5 |
| 73 | |
| 74 | pos: 1 1 1 2 2 2 2 2 |
| 75 | 7 8 9 0 1 2 3 4 |
| 76 | G o o d b y e line 1 |
| 77 | col: 0 1 2 3 4 5 6 |
| 78 | |
| 79 | |
| 80 | The same example for a control with line wrap assuming "Universe" is too |
| 81 | long to fit on the same line with "Hello,": |
| 82 | |
| 83 | pos: 0 1 2 3 4 5 |
| 84 | H e l l o , line 0 (row 0) |
| 85 | col: 0 1 2 3 4 5 |
| 86 | |
| 87 | 1 1 1 1 1 1 1 |
| 88 | pos: 6 7 8 9 0 1 2 3 4 5 6 |
| 89 | U n i v e r s e ! line 0 (row 1) |
| 90 | col: 6 7 8 9 1 1 1 1 1 1 |
| 91 | 0 1 2 3 4 5 |
| 92 | |
| 93 | (line 1 == row 2 same as above) |
| 94 | |
| 95 | Note that there is still the same number of columns and positions and that |
| 96 | there is no (logical) position at the end of the first ROW. This position |
| 97 | is identified with the preceding one (which is not how Windows does it: it |
| 98 | identifies it with the next one, i.e. the first position of the next line, |
| 99 | but much more logical IMHO). |
| 100 | */ |
| 101 | |
| 102 | /* |
| 103 | Search for "OPT" for possible optimizations |
| 104 | |
| 105 | A possible global optimization would be to always store the coords in the |
| 106 | text in triplets (pos, col, line) and update them simultaneously instead of |
| 107 | recalculating col and line from pos each time it is needed. Currently we |
| 108 | only do it for the current position but we might also do it for the |
| 109 | selection start and end. |
| 110 | */ |
| 111 | |
| 112 | // ============================================================================ |
| 113 | // declarations |
| 114 | // ============================================================================ |
| 115 | |
| 116 | // ---------------------------------------------------------------------------- |
| 117 | // headers |
| 118 | // ---------------------------------------------------------------------------- |
| 119 | |
| 120 | #include "wx/wxprec.h" |
| 121 | |
| 122 | #ifdef __BORLANDC__ |
| 123 | #pragma hdrstop |
| 124 | #endif |
| 125 | |
| 126 | #if wxUSE_TEXTCTRL |
| 127 | |
| 128 | #include "wx/textctrl.h" |
| 129 | |
| 130 | #ifndef WX_PRECOMP |
| 131 | #include "wx/log.h" |
| 132 | #include "wx/dcclient.h" |
| 133 | #include "wx/validate.h" |
| 134 | #include "wx/dataobj.h" |
| 135 | #endif |
| 136 | |
| 137 | #include <ctype.h> |
| 138 | |
| 139 | #include "wx/clipbrd.h" |
| 140 | |
| 141 | #include "wx/textfile.h" |
| 142 | |
| 143 | #include "wx/caret.h" |
| 144 | |
| 145 | #include "wx/univ/inphand.h" |
| 146 | #include "wx/univ/renderer.h" |
| 147 | #include "wx/univ/colschem.h" |
| 148 | #include "wx/univ/theme.h" |
| 149 | |
| 150 | #include "wx/cmdproc.h" |
| 151 | |
| 152 | // turn extra wxTextCtrl-specific debugging on/off |
| 153 | #define WXDEBUG_TEXT |
| 154 | |
| 155 | // turn wxTextCtrl::Replace() debugging on (slows down code a *lot*!) |
| 156 | #define WXDEBUG_TEXT_REPLACE |
| 157 | |
| 158 | #ifndef __WXDEBUG__ |
| 159 | #undef WXDEBUG_TEXT |
| 160 | #undef WXDEBUG_TEXT_REPLACE |
| 161 | #endif |
| 162 | |
| 163 | // wxStringTokenize only needed for debug checks |
| 164 | #ifdef WXDEBUG_TEXT_REPLACE |
| 165 | #include "wx/tokenzr.h" |
| 166 | #endif // WXDEBUG_TEXT_REPLACE |
| 167 | |
| 168 | // ---------------------------------------------------------------------------- |
| 169 | // wxStdTextCtrlInputHandler: this control handles only the mouse/kbd actions |
| 170 | // common to Win32 and GTK, platform-specific things are implemented elsewhere |
| 171 | // ---------------------------------------------------------------------------- |
| 172 | |
| 173 | class WXDLLEXPORT wxStdTextCtrlInputHandler : public wxStdInputHandler |
| 174 | { |
| 175 | public: |
| 176 | wxStdTextCtrlInputHandler(wxInputHandler *inphand); |
| 177 | |
| 178 | virtual bool HandleKey(wxInputConsumer *consumer, |
| 179 | const wxKeyEvent& event, |
| 180 | bool pressed); |
| 181 | virtual bool HandleMouse(wxInputConsumer *consumer, |
| 182 | const wxMouseEvent& event); |
| 183 | virtual bool HandleMouseMove(wxInputConsumer *consumer, |
| 184 | const wxMouseEvent& event); |
| 185 | virtual bool HandleFocus(wxInputConsumer *consumer, const wxFocusEvent& event); |
| 186 | |
| 187 | protected: |
| 188 | // get the position of the mouse click |
| 189 | static wxTextPos HitTest(const wxTextCtrl *text, const wxPoint& pos); |
| 190 | |
| 191 | // capture data |
| 192 | wxTextCtrl *m_winCapture; |
| 193 | }; |
| 194 | |
| 195 | // ---------------------------------------------------------------------------- |
| 196 | // private functions |
| 197 | // ---------------------------------------------------------------------------- |
| 198 | |
| 199 | // exchange two positions so that from is always less than or equal to to |
| 200 | static inline void OrderPositions(wxTextPos& from, wxTextPos& to) |
| 201 | { |
| 202 | if ( from > to ) |
| 203 | { |
| 204 | wxTextPos tmp = from; |
| 205 | from = to; |
| 206 | to = tmp; |
| 207 | } |
| 208 | } |
| 209 | |
| 210 | // ---------------------------------------------------------------------------- |
| 211 | // constants |
| 212 | // ---------------------------------------------------------------------------- |
| 213 | |
| 214 | // names of text ctrl commands |
| 215 | #define wxTEXT_COMMAND_INSERT _T("insert") |
| 216 | #define wxTEXT_COMMAND_REMOVE _T("remove") |
| 217 | |
| 218 | // the value which is never used for text position, even not -1 which is |
| 219 | // sometimes used for some special meaning |
| 220 | static const wxTextPos INVALID_POS_VALUE = wxInvalidTextCoord; |
| 221 | |
| 222 | // overlap between pages (when using PageUp/Dn) in lines |
| 223 | static const size_t PAGE_OVERLAP_IN_LINES = 1; |
| 224 | |
| 225 | // ---------------------------------------------------------------------------- |
| 226 | // private data of wxTextCtrl |
| 227 | // ---------------------------------------------------------------------------- |
| 228 | |
| 229 | // the data only used by single line text controls |
| 230 | struct wxTextSingleLineData |
| 231 | { |
| 232 | // the position of the first visible pixel and the first visible column |
| 233 | wxCoord m_ofsHorz; |
| 234 | wxTextCoord m_colStart; |
| 235 | |
| 236 | // and the last ones (m_posLastVisible is the width but m_colLastVisible |
| 237 | // is an absolute value) |
| 238 | wxCoord m_posLastVisible; |
| 239 | wxTextCoord m_colLastVisible; |
| 240 | |
| 241 | // def ctor |
| 242 | wxTextSingleLineData() |
| 243 | { |
| 244 | m_colStart = 0; |
| 245 | m_ofsHorz = 0; |
| 246 | |
| 247 | m_colLastVisible = -1; |
| 248 | m_posLastVisible = -1; |
| 249 | } |
| 250 | |
| 251 | }; |
| 252 | |
| 253 | // the data only used by multi line text controls |
| 254 | struct wxTextMultiLineData |
| 255 | { |
| 256 | // the lines of text |
| 257 | wxArrayString m_lines; |
| 258 | |
| 259 | // the current ranges of the scrollbars |
| 260 | int m_scrollRangeX, |
| 261 | m_scrollRangeY; |
| 262 | |
| 263 | // should we adjust the horz/vert scrollbar? |
| 264 | bool m_updateScrollbarX, |
| 265 | m_updateScrollbarY; |
| 266 | |
| 267 | // the max line length in pixels |
| 268 | wxCoord m_widthMax; |
| 269 | |
| 270 | // the index of the line which has the length of m_widthMax |
| 271 | wxTextCoord m_lineLongest; |
| 272 | |
| 273 | // the rect in which text appears: it is even less than m_rectText because |
| 274 | // only the last _complete_ line is shown, hence there is an unoccupied |
| 275 | // horizontal band at the bottom of it |
| 276 | wxRect m_rectTextReal; |
| 277 | |
| 278 | // the x-coordinate of the caret before we started moving it vertically: |
| 279 | // this is used to ensure that moving the caret up and then down will |
| 280 | // return it to the same position as if we always round it in one direction |
| 281 | // we would shift it in that direction |
| 282 | // |
| 283 | // when m_xCaret == -1, we don't have any remembered position |
| 284 | wxCoord m_xCaret; |
| 285 | |
| 286 | // the def ctor |
| 287 | wxTextMultiLineData() |
| 288 | { |
| 289 | m_scrollRangeX = |
| 290 | m_scrollRangeY = 0; |
| 291 | |
| 292 | m_updateScrollbarX = |
| 293 | m_updateScrollbarY = false; |
| 294 | |
| 295 | m_widthMax = -1; |
| 296 | m_lineLongest = 0; |
| 297 | |
| 298 | m_xCaret = -1; |
| 299 | } |
| 300 | }; |
| 301 | |
| 302 | // the data only used by multi line text controls in line wrap mode |
| 303 | class wxWrappedLineData |
| 304 | { |
| 305 | // these functions set all our values, so give them access to them |
| 306 | friend void wxTextCtrl::LayoutLine(wxTextCoord line, |
| 307 | wxWrappedLineData& lineData) const; |
| 308 | friend void wxTextCtrl::LayoutLines(wxTextCoord) const; |
| 309 | |
| 310 | public: |
| 311 | // def ctor |
| 312 | wxWrappedLineData() |
| 313 | { |
| 314 | m_rowFirst = -1; |
| 315 | } |
| 316 | |
| 317 | // get the start of any row (remember that accessing m_rowsStart doesn't work |
| 318 | // for the first one) |
| 319 | wxTextCoord GetRowStart(wxTextCoord row) const |
| 320 | { |
| 321 | wxASSERT_MSG( IsValid(), _T("this line hadn't been laid out") ); |
| 322 | |
| 323 | return row ? m_rowsStart[row - 1] : 0; |
| 324 | } |
| 325 | |
| 326 | // get the length of the row (using the total line length which we don't |
| 327 | // have here but need to calculate the length of the last row, so it must |
| 328 | // be given to us) |
| 329 | wxTextCoord GetRowLength(wxTextCoord row, wxTextCoord lenLine) const |
| 330 | { |
| 331 | wxASSERT_MSG( IsValid(), _T("this line hadn't been laid out") ); |
| 332 | |
| 333 | // note that m_rowsStart[row] is the same as GetRowStart(row + 1) (but |
| 334 | // slightly more efficient) and lenLine is the same as the start of the |
| 335 | // first row of the next line |
| 336 | return ((size_t)row == m_rowsStart.GetCount() ? lenLine : m_rowsStart[row]) |
| 337 | - GetRowStart(row); |
| 338 | } |
| 339 | |
| 340 | // return the width of the row in pixels |
| 341 | wxCoord GetRowWidth(wxTextCoord row) const |
| 342 | { |
| 343 | wxASSERT_MSG( IsValid(), _T("this line hadn't been laid out") ); |
| 344 | |
| 345 | return m_rowsWidth[row]; |
| 346 | } |
| 347 | |
| 348 | // return the number of rows |
| 349 | size_t GetRowCount() const |
| 350 | { |
| 351 | wxASSERT_MSG( IsValid(), _T("this line hadn't been laid out") ); |
| 352 | |
| 353 | return m_rowsStart.GetCount() + 1; |
| 354 | } |
| 355 | |
| 356 | // return the number of additional (i.e. after the first one) rows |
| 357 | size_t GetExtraRowCount() const |
| 358 | { |
| 359 | wxASSERT_MSG( IsValid(), _T("this line hadn't been laid out") ); |
| 360 | |
| 361 | return m_rowsStart.GetCount(); |
| 362 | } |
| 363 | |
| 364 | // return the first row of this line |
| 365 | wxTextCoord GetFirstRow() const |
| 366 | { |
| 367 | wxASSERT_MSG( IsValid(), _T("this line hadn't been laid out") ); |
| 368 | |
| 369 | return m_rowFirst; |
| 370 | } |
| 371 | |
| 372 | // return the first row of the next line |
| 373 | wxTextCoord GetNextRow() const |
| 374 | { |
| 375 | wxASSERT_MSG( IsValid(), _T("this line hadn't been laid out") ); |
| 376 | |
| 377 | return m_rowFirst + m_rowsStart.GetCount() + 1; |
| 378 | } |
| 379 | |
| 380 | // this just provides direct access to m_rowsStart aerray for efficiency |
| 381 | wxTextCoord GetExtraRowStart(wxTextCoord row) const |
| 382 | { |
| 383 | wxASSERT_MSG( IsValid(), _T("this line hadn't been laid out") ); |
| 384 | |
| 385 | return m_rowsStart[row]; |
| 386 | } |
| 387 | |
| 388 | // this code is unused any longer |
| 389 | #if 0 |
| 390 | // return true if the column is in the start of the last row (hence the row |
| 391 | // it is in is not wrapped) |
| 392 | bool IsLastRow(wxTextCoord colRowStart) const |
| 393 | { |
| 394 | return colRowStart == GetRowStart(m_rowsStart.GetCount()); |
| 395 | } |
| 396 | |
| 397 | // return true if the column is the last column of the row starting in |
| 398 | // colRowStart |
| 399 | bool IsLastColInRow(wxTextCoord colRowStart, |
| 400 | wxTextCoord colRowEnd, |
| 401 | wxTextCoord lenLine) const |
| 402 | { |
| 403 | // find the row which starts with colRowStart |
| 404 | size_t nRows = GetRowCount(); |
| 405 | for ( size_t n = 0; n < nRows; n++ ) |
| 406 | { |
| 407 | if ( GetRowStart(n) == colRowStart ) |
| 408 | { |
| 409 | wxTextCoord colNextRowStart = n == nRows - 1 |
| 410 | ? lenLine |
| 411 | : GetRowStart(n + 1); |
| 412 | |
| 413 | wxASSERT_MSG( colRowEnd < colNextRowStart, |
| 414 | _T("this column is not in this row at all!") ); |
| 415 | |
| 416 | return colRowEnd == colNextRowStart - 1; |
| 417 | } |
| 418 | } |
| 419 | |
| 420 | // caller got it wrong |
| 421 | wxFAIL_MSG( _T("this column is not in the start of the row!") ); |
| 422 | |
| 423 | return false; |
| 424 | } |
| 425 | #endif // 0 |
| 426 | |
| 427 | // is this row the last one in its line? |
| 428 | bool IsLastRow(wxTextCoord row) const |
| 429 | { |
| 430 | return (size_t)row == GetExtraRowCount(); |
| 431 | } |
| 432 | |
| 433 | // the line is valid if it had been laid out correctly: note that just |
| 434 | // shiwting the line (because one of previous lines changed) doesn't make |
| 435 | // it invalid |
| 436 | bool IsValid() const { return !m_rowsWidth.IsEmpty(); } |
| 437 | |
| 438 | // invalidating line will relayout it |
| 439 | void Invalidate() { m_rowsWidth.Empty(); } |
| 440 | |
| 441 | private: |
| 442 | // for each line we remember the starting columns of all its rows after the |
| 443 | // first one (which always starts at 0), i.e. if a line is wrapped twice |
| 444 | // (== takes 3 rows) its m_rowsStart[0] may be 10 and m_rowsStart[1] == 15 |
| 445 | wxArrayLong m_rowsStart; |
| 446 | |
| 447 | // and the width of each row in pixels (this array starts from 0, as usual) |
| 448 | wxArrayInt m_rowsWidth; |
| 449 | |
| 450 | // and also its starting row (0 for the first line, first lines' |
| 451 | // m_rowsStart.GetCount() + 1 for the second &c): it is set to -1 initially |
| 452 | // and this means that the struct hadn't yet been initialized |
| 453 | wxTextCoord m_rowFirst; |
| 454 | |
| 455 | // the last modification "time"-stamp used by LayoutLines() |
| 456 | size_t m_timestamp; |
| 457 | }; |
| 458 | |
| 459 | WX_DECLARE_OBJARRAY(wxWrappedLineData, wxArrayWrappedLinesData); |
| 460 | #include "wx/arrimpl.cpp" |
| 461 | WX_DEFINE_OBJARRAY(wxArrayWrappedLinesData); |
| 462 | |
| 463 | struct wxTextWrappedData : public wxTextMultiLineData |
| 464 | { |
| 465 | // the width of the column to the right of the text rect used for the |
| 466 | // indicator mark display for the wrapped lines |
| 467 | wxCoord m_widthMark; |
| 468 | |
| 469 | // the data for each line |
| 470 | wxArrayWrappedLinesData m_linesData; |
| 471 | |
| 472 | // flag telling us to recalculate all starting rows starting from this line |
| 473 | // (if it is -1, we don't have to recalculate anything) - it is set when |
| 474 | // the number of the rows in the middle of the control changes |
| 475 | wxTextCoord m_rowFirstInvalid; |
| 476 | |
| 477 | // the current timestamp used by LayoutLines() |
| 478 | size_t m_timestamp; |
| 479 | |
| 480 | // invalidate starting rows of all lines (NOT rows!) after this one |
| 481 | void InvalidateLinesBelow(wxTextCoord line) |
| 482 | { |
| 483 | if ( m_rowFirstInvalid == -1 || m_rowFirstInvalid > line ) |
| 484 | { |
| 485 | m_rowFirstInvalid = line; |
| 486 | } |
| 487 | } |
| 488 | |
| 489 | // check if this line is valid: i.e. before the first invalid one |
| 490 | bool IsValidLine(wxTextCoord line) const |
| 491 | { |
| 492 | return ((m_rowFirstInvalid == -1) || (line < m_rowFirstInvalid)) && |
| 493 | m_linesData[line].IsValid(); |
| 494 | } |
| 495 | |
| 496 | // def ctor |
| 497 | wxTextWrappedData() |
| 498 | { |
| 499 | m_widthMark = 0; |
| 500 | m_rowFirstInvalid = -1; |
| 501 | m_timestamp = 0; |
| 502 | } |
| 503 | }; |
| 504 | |
| 505 | // ---------------------------------------------------------------------------- |
| 506 | // private classes for undo/redo management |
| 507 | // ---------------------------------------------------------------------------- |
| 508 | |
| 509 | /* |
| 510 | We use custom versions of wxWidgets command processor to implement undo/redo |
| 511 | as we want to avoid storing the backpointer to wxTextCtrl in wxCommand |
| 512 | itself: this is a waste of memory as all commands in the given command |
| 513 | processor always have the same associated wxTextCtrl and so it makes sense |
| 514 | to store the backpointer there. |
| 515 | |
| 516 | As for the rest of the implementation, it's fairly standard: we have 2 |
| 517 | command classes corresponding to adding and removing text. |
| 518 | */ |
| 519 | |
| 520 | // a command corresponding to a wxTextCtrl action |
| 521 | class wxTextCtrlCommand : public wxCommand |
| 522 | { |
| 523 | public: |
| 524 | wxTextCtrlCommand(const wxString& name) : wxCommand(true, name) { } |
| 525 | |
| 526 | // we don't use these methods as they don't make sense for us as we need a |
| 527 | // wxTextCtrl to be applied |
| 528 | virtual bool Do() { wxFAIL_MSG(_T("shouldn't be called")); return false; } |
| 529 | virtual bool Undo() { wxFAIL_MSG(_T("shouldn't be called")); return false; } |
| 530 | |
| 531 | // instead, our command processor uses these methods |
| 532 | virtual bool Do(wxTextCtrl *text) = 0; |
| 533 | virtual bool Undo(wxTextCtrl *text) = 0; |
| 534 | }; |
| 535 | |
| 536 | // insert text command |
| 537 | class wxTextCtrlInsertCommand : public wxTextCtrlCommand |
| 538 | { |
| 539 | public: |
| 540 | wxTextCtrlInsertCommand(const wxString& textToInsert) |
| 541 | : wxTextCtrlCommand(wxTEXT_COMMAND_INSERT), m_text(textToInsert) |
| 542 | { |
| 543 | m_from = -1; |
| 544 | } |
| 545 | |
| 546 | // combine the 2 commands together |
| 547 | void Append(wxTextCtrlInsertCommand *other); |
| 548 | |
| 549 | virtual bool CanUndo() const; |
| 550 | virtual bool Do(wxTextCtrl *text); |
| 551 | virtual bool Do() { return wxTextCtrlCommand::Do(); } |
| 552 | virtual bool Undo() { return wxTextCtrlCommand::Undo(); } |
| 553 | virtual bool Undo(wxTextCtrl *text); |
| 554 | |
| 555 | private: |
| 556 | // the text we insert |
| 557 | wxString m_text; |
| 558 | |
| 559 | // the position where we inserted the text |
| 560 | wxTextPos m_from; |
| 561 | }; |
| 562 | |
| 563 | // remove text command |
| 564 | class wxTextCtrlRemoveCommand : public wxTextCtrlCommand |
| 565 | { |
| 566 | public: |
| 567 | wxTextCtrlRemoveCommand(wxTextPos from, wxTextPos to) |
| 568 | : wxTextCtrlCommand(wxTEXT_COMMAND_REMOVE) |
| 569 | { |
| 570 | m_from = from; |
| 571 | m_to = to; |
| 572 | } |
| 573 | |
| 574 | virtual bool CanUndo() const; |
| 575 | virtual bool Do(wxTextCtrl *text); |
| 576 | virtual bool Do() { return wxTextCtrlCommand::Do(); } |
| 577 | virtual bool Undo() { return wxTextCtrlCommand::Undo(); } |
| 578 | virtual bool Undo(wxTextCtrl *text); |
| 579 | |
| 580 | private: |
| 581 | // the range of text to delete |
| 582 | wxTextPos m_from, |
| 583 | m_to; |
| 584 | |
| 585 | // the text which was deleted when this command was Do()ne |
| 586 | wxString m_textDeleted; |
| 587 | }; |
| 588 | |
| 589 | // a command processor for a wxTextCtrl |
| 590 | class wxTextCtrlCommandProcessor : public wxCommandProcessor |
| 591 | { |
| 592 | public: |
| 593 | wxTextCtrlCommandProcessor(wxTextCtrl *text) |
| 594 | { |
| 595 | m_compressInserts = false; |
| 596 | |
| 597 | m_text = text; |
| 598 | } |
| 599 | |
| 600 | // override Store() to compress multiple wxTextCtrlInsertCommand into one |
| 601 | virtual void Store(wxCommand *command); |
| 602 | |
| 603 | // stop compressing insert commands when this is called |
| 604 | void StopCompressing() { m_compressInserts = false; } |
| 605 | |
| 606 | // accessors |
| 607 | wxTextCtrl *GetTextCtrl() const { return m_text; } |
| 608 | bool IsCompressing() const { return m_compressInserts; } |
| 609 | |
| 610 | protected: |
| 611 | virtual bool DoCommand(wxCommand& cmd) |
| 612 | { return ((wxTextCtrlCommand &)cmd).Do(m_text); } |
| 613 | virtual bool UndoCommand(wxCommand& cmd) |
| 614 | { return ((wxTextCtrlCommand &)cmd).Undo(m_text); } |
| 615 | |
| 616 | // check if this command is a wxTextCtrlInsertCommand and return it casted |
| 617 | // to the right type if it is or NULL otherwise |
| 618 | wxTextCtrlInsertCommand *IsInsertCommand(wxCommand *cmd); |
| 619 | |
| 620 | private: |
| 621 | // the control we're associated with |
| 622 | wxTextCtrl *m_text; |
| 623 | |
| 624 | // if the flag is true we're compressing subsequent insert commands into |
| 625 | // one so that the entire typing could be undone in one call to Undo() |
| 626 | bool m_compressInserts; |
| 627 | }; |
| 628 | |
| 629 | // ============================================================================ |
| 630 | // implementation |
| 631 | // ============================================================================ |
| 632 | |
| 633 | BEGIN_EVENT_TABLE(wxTextCtrl, wxTextCtrlBase) |
| 634 | EVT_CHAR(wxTextCtrl::OnChar) |
| 635 | |
| 636 | EVT_SIZE(wxTextCtrl::OnSize) |
| 637 | END_EVENT_TABLE() |
| 638 | |
| 639 | IMPLEMENT_DYNAMIC_CLASS(wxTextCtrl, wxTextCtrlBase) |
| 640 | |
| 641 | // ---------------------------------------------------------------------------- |
| 642 | // creation |
| 643 | // ---------------------------------------------------------------------------- |
| 644 | |
| 645 | void wxTextCtrl::Init() |
| 646 | { |
| 647 | m_selAnchor = |
| 648 | m_selStart = |
| 649 | m_selEnd = -1; |
| 650 | |
| 651 | m_isModified = false; |
| 652 | m_isEditable = true; |
| 653 | m_wrapLines = false; |
| 654 | |
| 655 | m_posLast = |
| 656 | m_curPos = |
| 657 | m_curCol = |
| 658 | m_curRow = 0; |
| 659 | |
| 660 | m_heightLine = |
| 661 | m_widthAvg = -1; |
| 662 | |
| 663 | // init the undo manager |
| 664 | m_cmdProcessor = new wxTextCtrlCommandProcessor(this); |
| 665 | |
| 666 | // no data yet |
| 667 | m_data.data = NULL; |
| 668 | } |
| 669 | |
| 670 | bool wxTextCtrl::Create(wxWindow *parent, |
| 671 | wxWindowID id, |
| 672 | const wxString& value, |
| 673 | const wxPoint& pos, |
| 674 | const wxSize& size, |
| 675 | long style, |
| 676 | const wxValidator& validator, |
| 677 | const wxString &name) |
| 678 | { |
| 679 | if ( style & wxTE_MULTILINE ) |
| 680 | { |
| 681 | // for compatibility with wxMSW we create the controls with vertical |
| 682 | // scrollbar always shown unless they have wxTE_RICH style (because |
| 683 | // Windows text controls always has vert scrollbar but richedit one |
| 684 | // doesn't) |
| 685 | if ( !(style & wxTE_RICH) ) |
| 686 | { |
| 687 | style |= wxALWAYS_SHOW_SB; |
| 688 | } |
| 689 | |
| 690 | // wrapping style: wxTE_DONTWRAP == wxHSCROLL so if it's _not_ given, |
| 691 | // we won't have horizontal scrollbar automatically, no need to do |
| 692 | // anything |
| 693 | |
| 694 | // TODO: support wxTE_NO_VSCROLL (?) |
| 695 | |
| 696 | // create data object for normal multiline or for controls with line |
| 697 | // wrap as needed |
| 698 | if ( style & wxHSCROLL ) |
| 699 | { |
| 700 | m_data.mdata = new wxTextMultiLineData; |
| 701 | } |
| 702 | else // we must wrap lines if we don't have horizontal scrollbar |
| 703 | { |
| 704 | // NB: we can't rely on HasFlag(wxHSCROLL) as the flags can change |
| 705 | // later and even wxWindow::Create() itself temporarily resets |
| 706 | // wxHSCROLL in wxUniv, so remember that we have a wrapped data |
| 707 | // and not just a multi line data in a separate variable |
| 708 | m_wrapLines = true; |
| 709 | m_data.wdata = new wxTextWrappedData; |
| 710 | } |
| 711 | } |
| 712 | else |
| 713 | { |
| 714 | // this doesn't make sense for single line controls |
| 715 | style &= ~wxHSCROLL; |
| 716 | |
| 717 | // create data object for single line controls |
| 718 | m_data.sdata = new wxTextSingleLineData; |
| 719 | } |
| 720 | |
| 721 | #if wxUSE_TWO_WINDOWS |
| 722 | if ((style & wxBORDER_MASK) == 0) |
| 723 | style |= wxBORDER_SUNKEN; |
| 724 | #endif |
| 725 | |
| 726 | if ( !wxControl::Create(parent, id, pos, size, style, |
| 727 | validator, name) ) |
| 728 | { |
| 729 | return false; |
| 730 | } |
| 731 | |
| 732 | SetCursor(wxCURSOR_IBEAM); |
| 733 | |
| 734 | if ( style & wxTE_MULTILINE ) |
| 735 | { |
| 736 | // we should always have at least one line in a multiline control |
| 737 | MData().m_lines.Add(wxEmptyString); |
| 738 | |
| 739 | if ( !(style & wxHSCROLL) ) |
| 740 | { |
| 741 | WData().m_linesData.Add(new wxWrappedLineData); |
| 742 | WData().InvalidateLinesBelow(0); |
| 743 | } |
| 744 | |
| 745 | // we might support it but it's quite useless and other ports don't |
| 746 | // support it anyhow |
| 747 | wxASSERT_MSG( !(style & wxTE_PASSWORD), |
| 748 | _T("wxTE_PASSWORD can't be used with multiline ctrls") ); |
| 749 | } |
| 750 | |
| 751 | RecalcFontMetrics(); |
| 752 | SetValue(value); |
| 753 | SetInitialSize(size); |
| 754 | |
| 755 | m_isEditable = !(style & wxTE_READONLY); |
| 756 | |
| 757 | CreateCaret(); |
| 758 | InitInsertionPoint(); |
| 759 | |
| 760 | // we can't show caret right now as we're not shown yet and so it would |
| 761 | // result in garbage on the screen - we'll do it after first OnPaint() |
| 762 | m_hasCaret = false; |
| 763 | |
| 764 | CreateInputHandler(wxINP_HANDLER_TEXTCTRL); |
| 765 | |
| 766 | wxSizeEvent sizeEvent(GetSize(), GetId()); |
| 767 | GetEventHandler()->ProcessEvent(sizeEvent); |
| 768 | |
| 769 | return true; |
| 770 | } |
| 771 | |
| 772 | wxTextCtrl::~wxTextCtrl() |
| 773 | { |
| 774 | delete m_cmdProcessor; |
| 775 | |
| 776 | if ( m_data.data ) |
| 777 | { |
| 778 | if ( IsSingleLine() ) |
| 779 | delete m_data.sdata; |
| 780 | else if ( WrapLines() ) |
| 781 | delete m_data.wdata; |
| 782 | else |
| 783 | delete m_data.mdata; |
| 784 | } |
| 785 | } |
| 786 | |
| 787 | // ---------------------------------------------------------------------------- |
| 788 | // set/get the value |
| 789 | // ---------------------------------------------------------------------------- |
| 790 | |
| 791 | void wxTextCtrl::DoSetValue(const wxString& value, int flags) |
| 792 | { |
| 793 | if ( value != GetValue() ) |
| 794 | { |
| 795 | EventsSuppressor noeventsIf(this, !(flags & SetValue_SendEvent)); |
| 796 | |
| 797 | Replace(0, GetLastPosition(), value); |
| 798 | |
| 799 | if ( IsSingleLine() ) |
| 800 | { |
| 801 | SetInsertionPoint(0); |
| 802 | } |
| 803 | } |
| 804 | else // nothing changed |
| 805 | { |
| 806 | // still send event for consistency |
| 807 | if ( flags & SetValue_SendEvent ) |
| 808 | SendTextUpdatedEvent(); |
| 809 | } |
| 810 | } |
| 811 | |
| 812 | const wxArrayString& wxTextCtrl::GetLines() const |
| 813 | { |
| 814 | return MData().m_lines; |
| 815 | } |
| 816 | |
| 817 | size_t wxTextCtrl::GetLineCount() const |
| 818 | { |
| 819 | return MData().m_lines.GetCount(); |
| 820 | } |
| 821 | |
| 822 | wxString wxTextCtrl::GetValue() const |
| 823 | { |
| 824 | // for multiline controls we don't always store the total value but only |
| 825 | // recompute it when asked - and to invalidate it we just empty it in |
| 826 | // Replace() |
| 827 | if ( !IsSingleLine() && m_value.empty() ) |
| 828 | { |
| 829 | // recalculate: note that we always do it for empty multilien control, |
| 830 | // but then it's so quick that it's not important |
| 831 | |
| 832 | // the first line is special as there is no \n before it, so it's |
| 833 | // outside the loop |
| 834 | const wxArrayString& lines = GetLines(); |
| 835 | wxTextCtrl *self = wxConstCast(this, wxTextCtrl); |
| 836 | self->m_value << lines[0u]; |
| 837 | size_t count = lines.GetCount(); |
| 838 | for ( size_t n = 1; n < count; n++ ) |
| 839 | { |
| 840 | self->m_value << _T('\n') << lines[n]; |
| 841 | } |
| 842 | } |
| 843 | |
| 844 | return m_value; |
| 845 | } |
| 846 | |
| 847 | void wxTextCtrl::Clear() |
| 848 | { |
| 849 | SetValue(wxEmptyString); |
| 850 | } |
| 851 | |
| 852 | bool wxTextCtrl::ReplaceLine(wxTextCoord line, |
| 853 | const wxString& text) |
| 854 | { |
| 855 | if ( WrapLines() ) |
| 856 | { |
| 857 | // first, we have to relayout the line entirely |
| 858 | // |
| 859 | // OPT: we might try not to recalc the unchanged part of line |
| 860 | |
| 861 | wxWrappedLineData& lineData = WData().m_linesData[line]; |
| 862 | |
| 863 | // if we had some number of rows before, use this number, otherwise |
| 864 | // just make sure that the test below (rowsNew != rowsOld) will be true |
| 865 | int rowsOld; |
| 866 | if ( lineData.IsValid() ) |
| 867 | { |
| 868 | rowsOld = lineData.GetExtraRowCount(); |
| 869 | } |
| 870 | else // line wasn't laid out yet |
| 871 | { |
| 872 | // assume it changed entirely as we can't do anything better |
| 873 | rowsOld = -1; |
| 874 | } |
| 875 | |
| 876 | // now change the line |
| 877 | MData().m_lines[line] = text; |
| 878 | |
| 879 | // OPT: we choose to lay it our immediately instead of delaying it |
| 880 | // until it is needed because it allows us to avoid invalidating |
| 881 | // lines further down if the number of rows didn't chnage, but |
| 882 | // maybe we can imporve this even further? |
| 883 | LayoutLine(line, lineData); |
| 884 | |
| 885 | int rowsNew = lineData.GetExtraRowCount(); |
| 886 | |
| 887 | if ( rowsNew != rowsOld ) |
| 888 | { |
| 889 | // we have to update the line wrap marks as this is normally done |
| 890 | // by LayoutLines() which we bypassed by calling LayoutLine() |
| 891 | // directly |
| 892 | wxTextCoord rowFirst = lineData.GetFirstRow(), |
| 893 | rowCount = wxMax(rowsOld, rowsNew); |
| 894 | RefreshLineWrapMarks(rowFirst, rowFirst + rowCount); |
| 895 | |
| 896 | // next, if this is not the last line, as the number of rows in it |
| 897 | // changed, we need to shift all the lines below it |
| 898 | if ( (size_t)line < WData().m_linesData.GetCount() ) |
| 899 | { |
| 900 | // number of rows changed shifting all lines below |
| 901 | WData().InvalidateLinesBelow(line + 1); |
| 902 | } |
| 903 | |
| 904 | // the number of rows changed |
| 905 | return true; |
| 906 | } |
| 907 | } |
| 908 | else // no line wrap |
| 909 | { |
| 910 | MData().m_lines[line] = text; |
| 911 | } |
| 912 | |
| 913 | // the number of rows didn't change |
| 914 | return false; |
| 915 | } |
| 916 | |
| 917 | void wxTextCtrl::RemoveLine(wxTextCoord line) |
| 918 | { |
| 919 | MData().m_lines.RemoveAt(line); |
| 920 | if ( WrapLines() ) |
| 921 | { |
| 922 | // we need to recalculate all the starting rows from this line, but we |
| 923 | // can avoid doing it if this line was never calculated: this means |
| 924 | // that we will recalculate all lines below it anyhow later if needed |
| 925 | if ( WData().IsValidLine(line) ) |
| 926 | { |
| 927 | WData().InvalidateLinesBelow(line); |
| 928 | } |
| 929 | |
| 930 | WData().m_linesData.RemoveAt(line); |
| 931 | } |
| 932 | } |
| 933 | |
| 934 | void wxTextCtrl::InsertLine(wxTextCoord line, const wxString& text) |
| 935 | { |
| 936 | MData().m_lines.Insert(text, line); |
| 937 | if ( WrapLines() ) |
| 938 | { |
| 939 | WData().m_linesData.Insert(new wxWrappedLineData, line); |
| 940 | |
| 941 | // invalidate everything below it |
| 942 | WData().InvalidateLinesBelow(line); |
| 943 | } |
| 944 | } |
| 945 | |
| 946 | void wxTextCtrl::Replace(wxTextPos from, wxTextPos to, const wxString& text) |
| 947 | { |
| 948 | wxTextCoord colStart, colEnd, |
| 949 | lineStart, lineEnd; |
| 950 | |
| 951 | if ( (from > to) || |
| 952 | !PositionToXY(from, &colStart, &lineStart) || |
| 953 | !PositionToXY(to, &colEnd, &lineEnd) ) |
| 954 | { |
| 955 | wxFAIL_MSG(_T("invalid range in wxTextCtrl::Replace")); |
| 956 | |
| 957 | return; |
| 958 | } |
| 959 | |
| 960 | #ifdef WXDEBUG_TEXT_REPLACE |
| 961 | // a straighforward (but very inefficient) way of calculating what the new |
| 962 | // value should be |
| 963 | wxString textTotal = GetValue(); |
| 964 | wxString textTotalNew(textTotal, (size_t)from); |
| 965 | textTotalNew += text; |
| 966 | if ( (size_t)to < textTotal.length() ) |
| 967 | textTotalNew += textTotal.c_str() + (size_t)to; |
| 968 | #endif // WXDEBUG_TEXT_REPLACE |
| 969 | |
| 970 | // remember the old selection and reset it immediately: we must do it |
| 971 | // before calling Refresh(anything) as, at least under GTK, this leads to |
| 972 | // an _immediate_ repaint (under MSW it is delayed) and hence parts of |
| 973 | // text would be redrawn as selected if we didn't reset the selection |
| 974 | int selStartOld = m_selStart, |
| 975 | selEndOld = m_selEnd; |
| 976 | |
| 977 | m_selStart = |
| 978 | m_selEnd = -1; |
| 979 | |
| 980 | if ( IsSingleLine() ) |
| 981 | { |
| 982 | // replace the part of the text with the new value |
| 983 | wxString valueNew(m_value, (size_t)from); |
| 984 | |
| 985 | // remember it for later use |
| 986 | wxCoord startNewText = GetTextWidth(valueNew); |
| 987 | |
| 988 | valueNew += text; |
| 989 | if ( (size_t)to < m_value.length() ) |
| 990 | { |
| 991 | valueNew += m_value.c_str() + (size_t)to; |
| 992 | } |
| 993 | |
| 994 | // we usually refresh till the end of line except of the most common case |
| 995 | // when some text is appended to the end of the string in which case we |
| 996 | // refresh just it |
| 997 | wxCoord widthNewText; |
| 998 | |
| 999 | if ( (size_t)from < m_value.length() ) |
| 1000 | { |
| 1001 | // refresh till the end of line |
| 1002 | widthNewText = 0; |
| 1003 | } |
| 1004 | else // text appended, not replaced |
| 1005 | { |
| 1006 | // refresh only the new text |
| 1007 | widthNewText = GetTextWidth(text); |
| 1008 | } |
| 1009 | |
| 1010 | m_value = valueNew; |
| 1011 | |
| 1012 | // force SData().m_colLastVisible update |
| 1013 | SData().m_colLastVisible = -1; |
| 1014 | |
| 1015 | // repaint |
| 1016 | RefreshPixelRange(0, startNewText, widthNewText); |
| 1017 | } |
| 1018 | else // multiline |
| 1019 | { |
| 1020 | //OPT: special case for replacements inside single line? |
| 1021 | |
| 1022 | /* |
| 1023 | Join all the lines in the replacement range into one string, then |
| 1024 | replace a part of it with the new text and break it into lines again. |
| 1025 | */ |
| 1026 | |
| 1027 | // (0) we want to know if this replacement changes the number of rows |
| 1028 | // as if it does we need to refresh everything below the changed |
| 1029 | // text (it will be shifted...) and we can avoid it if there is no |
| 1030 | // row relayout |
| 1031 | bool rowsNumberChanged = false; |
| 1032 | |
| 1033 | // (1) join lines |
| 1034 | const wxArrayString& linesOld = GetLines(); |
| 1035 | wxString textOrig; |
| 1036 | wxTextCoord line; |
| 1037 | for ( line = lineStart; line <= lineEnd; line++ ) |
| 1038 | { |
| 1039 | if ( line > lineStart ) |
| 1040 | { |
| 1041 | // from the previous line |
| 1042 | textOrig += _T('\n'); |
| 1043 | } |
| 1044 | |
| 1045 | textOrig += linesOld[line]; |
| 1046 | } |
| 1047 | |
| 1048 | // we need to append the '\n' for the last line unless there is no |
| 1049 | // following line |
| 1050 | size_t countOld = linesOld.GetCount(); |
| 1051 | |
| 1052 | // (2) replace text in the combined string |
| 1053 | |
| 1054 | // (2a) leave the part before replaced area unchanged |
| 1055 | wxString textNew(textOrig, colStart); |
| 1056 | |
| 1057 | // these values will be used to refresh the changed area below |
| 1058 | wxCoord widthNewText, |
| 1059 | startNewText = GetTextWidth(textNew); |
| 1060 | if ( (size_t)colStart == linesOld[lineStart].length() ) |
| 1061 | { |
| 1062 | // text appended, refresh just enough to show the new text |
| 1063 | widthNewText = GetTextWidth(text.BeforeFirst(_T('\n'))); |
| 1064 | } |
| 1065 | else // text inserted, refresh till the end of line |
| 1066 | { |
| 1067 | widthNewText = 0; |
| 1068 | } |
| 1069 | |
| 1070 | // (2b) insert new text |
| 1071 | textNew += text; |
| 1072 | |
| 1073 | // (2c) and append the end of the old text |
| 1074 | |
| 1075 | // adjust for index shift: to is relative to colStart, not 0 |
| 1076 | size_t toRel = (size_t)((to - from) + colStart); |
| 1077 | if ( toRel < textOrig.length() ) |
| 1078 | { |
| 1079 | textNew += textOrig.c_str() + toRel; |
| 1080 | } |
| 1081 | |
| 1082 | // (3) break it into lines |
| 1083 | |
| 1084 | wxArrayString lines; |
| 1085 | const wxChar *curLineStart = textNew.c_str(); |
| 1086 | for ( const wxChar *p = textNew.c_str(); ; p++ ) |
| 1087 | { |
| 1088 | // end of line/text? |
| 1089 | if ( !*p || *p == _T('\n') ) |
| 1090 | { |
| 1091 | lines.Add(wxString(curLineStart, p)); |
| 1092 | if ( !*p ) |
| 1093 | break; |
| 1094 | |
| 1095 | curLineStart = p + 1; |
| 1096 | } |
| 1097 | } |
| 1098 | |
| 1099 | #ifdef WXDEBUG_TEXT_REPLACE |
| 1100 | // (3a) all empty tokens should be counted as replacing with "foo" and |
| 1101 | // with "foo\n" should have different effects |
| 1102 | wxArrayString lines2 = wxStringTokenize(textNew, _T("\n"), |
| 1103 | wxTOKEN_RET_EMPTY_ALL); |
| 1104 | |
| 1105 | if ( lines2.IsEmpty() ) |
| 1106 | { |
| 1107 | lines2.Add(wxEmptyString); |
| 1108 | } |
| 1109 | |
| 1110 | wxASSERT_MSG( lines.GetCount() == lines2.GetCount(), |
| 1111 | _T("Replace() broken") ); |
| 1112 | for ( size_t n = 0; n < lines.GetCount(); n++ ) |
| 1113 | { |
| 1114 | wxASSERT_MSG( lines[n] == lines2[n], _T("Replace() broken") ); |
| 1115 | } |
| 1116 | #endif // WXDEBUG_TEXT_REPLACE |
| 1117 | |
| 1118 | // (3b) special case: if we replace everything till the end we need to |
| 1119 | // keep an empty line or the lines would disappear completely |
| 1120 | // (this also takes care of never leaving m_lines empty) |
| 1121 | if ( ((size_t)lineEnd == countOld - 1) && lines.IsEmpty() ) |
| 1122 | { |
| 1123 | lines.Add(wxEmptyString); |
| 1124 | } |
| 1125 | |
| 1126 | size_t nReplaceCount = lines.GetCount(), |
| 1127 | nReplaceLine = 0; |
| 1128 | |
| 1129 | // (4) merge into the array |
| 1130 | |
| 1131 | // (4a) replace |
| 1132 | for ( line = lineStart; line <= lineEnd; line++, nReplaceLine++ ) |
| 1133 | { |
| 1134 | if ( nReplaceLine < nReplaceCount ) |
| 1135 | { |
| 1136 | // we have the replacement line for this one |
| 1137 | if ( ReplaceLine(line, lines[nReplaceLine]) ) |
| 1138 | { |
| 1139 | rowsNumberChanged = true; |
| 1140 | } |
| 1141 | |
| 1142 | UpdateMaxWidth(line); |
| 1143 | } |
| 1144 | else // no more replacement lines |
| 1145 | { |
| 1146 | // (4b) delete all extra lines (note that we need to delete |
| 1147 | // them backwards because indices shift while we do it) |
| 1148 | bool deletedLongestLine = false; |
| 1149 | for ( wxTextCoord lineDel = lineEnd; lineDel >= line; lineDel-- ) |
| 1150 | { |
| 1151 | if ( lineDel == MData().m_lineLongest ) |
| 1152 | { |
| 1153 | // we will need to recalc the max line width |
| 1154 | deletedLongestLine = true; |
| 1155 | } |
| 1156 | |
| 1157 | RemoveLine(lineDel); |
| 1158 | } |
| 1159 | |
| 1160 | if ( deletedLongestLine ) |
| 1161 | { |
| 1162 | RecalcMaxWidth(); |
| 1163 | } |
| 1164 | |
| 1165 | // even the line number changed |
| 1166 | rowsNumberChanged = true; |
| 1167 | |
| 1168 | // update line to exit the loop |
| 1169 | line = lineEnd + 1; |
| 1170 | } |
| 1171 | } |
| 1172 | |
| 1173 | // (4c) insert the new lines |
| 1174 | if ( nReplaceLine < nReplaceCount ) |
| 1175 | { |
| 1176 | // even the line number changed |
| 1177 | rowsNumberChanged = true; |
| 1178 | |
| 1179 | do |
| 1180 | { |
| 1181 | InsertLine(++lineEnd, lines[nReplaceLine++]); |
| 1182 | |
| 1183 | UpdateMaxWidth(lineEnd); |
| 1184 | } |
| 1185 | while ( nReplaceLine < nReplaceCount ); |
| 1186 | } |
| 1187 | |
| 1188 | // (5) now refresh the changed area |
| 1189 | |
| 1190 | // update the (cached) last position first as refresh functions use it |
| 1191 | m_posLast += text.length() - to + from; |
| 1192 | |
| 1193 | // we may optimize refresh if the number of rows didn't change - but if |
| 1194 | // it did we have to refresh everything below the part we chanegd as |
| 1195 | // well as it might have moved |
| 1196 | if ( !rowsNumberChanged ) |
| 1197 | { |
| 1198 | // refresh the line we changed |
| 1199 | if ( !WrapLines() ) |
| 1200 | { |
| 1201 | RefreshPixelRange(lineStart++, startNewText, widthNewText); |
| 1202 | } |
| 1203 | else |
| 1204 | { |
| 1205 | //OPT: we shouldn't refresh the unchanged part of the line in |
| 1206 | // this case, but instead just refresh the tail of it - the |
| 1207 | // trouble is that we don't know here where does this tail |
| 1208 | // start |
| 1209 | } |
| 1210 | |
| 1211 | // number of rows didn't change, refresh the updated rows and the |
| 1212 | // last one |
| 1213 | if ( lineStart <= lineEnd ) |
| 1214 | RefreshLineRange(lineStart, lineEnd); |
| 1215 | } |
| 1216 | else // rows number did change |
| 1217 | { |
| 1218 | if ( !WrapLines() ) |
| 1219 | { |
| 1220 | // refresh only part of the first line |
| 1221 | RefreshPixelRange(lineStart++, startNewText, widthNewText); |
| 1222 | } |
| 1223 | //else: we have to refresh everything as some part of the text |
| 1224 | // could be in the previous row before but moved to the next |
| 1225 | // one now (due to word wrap) |
| 1226 | |
| 1227 | wxTextCoord lineEnd = GetLines().GetCount() - 1; |
| 1228 | if ( lineStart <= lineEnd ) |
| 1229 | RefreshLineRange(lineStart, lineEnd); |
| 1230 | |
| 1231 | // refresh text rect left below |
| 1232 | RefreshLineRange(lineEnd + 1, 0); |
| 1233 | |
| 1234 | // the vert scrollbar might [dis]appear |
| 1235 | MData().m_updateScrollbarY = true; |
| 1236 | } |
| 1237 | |
| 1238 | // must recalculate it - will do later |
| 1239 | m_value.clear(); |
| 1240 | } |
| 1241 | |
| 1242 | #ifdef WXDEBUG_TEXT_REPLACE |
| 1243 | // optimized code above should give the same result as straightforward |
| 1244 | // computation in the beginning |
| 1245 | wxASSERT_MSG( GetValue() == textTotalNew, _T("error in Replace()") ); |
| 1246 | #endif // WXDEBUG_TEXT_REPLACE |
| 1247 | |
| 1248 | // update the current position: note that we always put the cursor at the |
| 1249 | // end of the replacement text |
| 1250 | DoSetInsertionPoint(from + text.length()); |
| 1251 | |
| 1252 | // and the selection: this is complicated by the fact that selection coords |
| 1253 | // must be first updated to reflect change in text coords, i.e. if we had |
| 1254 | // selection from 17 to 19 and we just removed this range, we don't have to |
| 1255 | // refresh anything, so we can't just use ClearSelection() here |
| 1256 | if ( selStartOld != -1 ) |
| 1257 | { |
| 1258 | // refresh the parst of the selection outside the changed text (which |
| 1259 | // we already refreshed) |
| 1260 | if ( selStartOld < from ) |
| 1261 | RefreshTextRange(selStartOld, from); |
| 1262 | if ( to < selEndOld ) |
| 1263 | RefreshTextRange(to, selEndOld); |
| 1264 | |
| 1265 | } |
| 1266 | |
| 1267 | // now call it to do the rest (not related to refreshing) |
| 1268 | ClearSelection(); |
| 1269 | |
| 1270 | if ( EventsAllowed() ) |
| 1271 | SendTextUpdatedEvent(); |
| 1272 | } |
| 1273 | |
| 1274 | void wxTextCtrl::Remove(wxTextPos from, wxTextPos to) |
| 1275 | { |
| 1276 | // Replace() only works with correctly ordered arguments, so exchange them |
| 1277 | // if necessary |
| 1278 | OrderPositions(from, to); |
| 1279 | |
| 1280 | Replace(from, to, wxEmptyString); |
| 1281 | } |
| 1282 | |
| 1283 | void wxTextCtrl::WriteText(const wxString& text) |
| 1284 | { |
| 1285 | // replace the selection with the new text |
| 1286 | RemoveSelection(); |
| 1287 | |
| 1288 | Replace(m_curPos, m_curPos, text); |
| 1289 | } |
| 1290 | |
| 1291 | void wxTextCtrl::AppendText(const wxString& text) |
| 1292 | { |
| 1293 | SetInsertionPointEnd(); |
| 1294 | WriteText(text); |
| 1295 | } |
| 1296 | |
| 1297 | // ---------------------------------------------------------------------------- |
| 1298 | // current position |
| 1299 | // ---------------------------------------------------------------------------- |
| 1300 | |
| 1301 | void wxTextCtrl::SetInsertionPoint(wxTextPos pos) |
| 1302 | { |
| 1303 | wxCHECK_RET( pos >= 0 && pos <= GetLastPosition(), |
| 1304 | _T("insertion point position out of range") ); |
| 1305 | |
| 1306 | // don't do anything if it didn't change |
| 1307 | if ( pos != m_curPos ) |
| 1308 | { |
| 1309 | DoSetInsertionPoint(pos); |
| 1310 | } |
| 1311 | |
| 1312 | if ( !IsSingleLine() ) |
| 1313 | { |
| 1314 | // moving cursor should reset the stored abscissa (even if the cursor |
| 1315 | // position didn't actually change!) |
| 1316 | MData().m_xCaret = -1; |
| 1317 | } |
| 1318 | |
| 1319 | ClearSelection(); |
| 1320 | } |
| 1321 | |
| 1322 | void wxTextCtrl::InitInsertionPoint() |
| 1323 | { |
| 1324 | // so far always put it in the beginning |
| 1325 | DoSetInsertionPoint(0); |
| 1326 | |
| 1327 | // this will also set the selection anchor correctly |
| 1328 | ClearSelection(); |
| 1329 | } |
| 1330 | |
| 1331 | void wxTextCtrl::MoveInsertionPoint(wxTextPos pos) |
| 1332 | { |
| 1333 | wxASSERT_MSG( pos >= 0 && pos <= GetLastPosition(), |
| 1334 | _T("DoSetInsertionPoint() can only be called with valid pos") ); |
| 1335 | |
| 1336 | m_curPos = pos; |
| 1337 | PositionToXY(m_curPos, &m_curCol, &m_curRow); |
| 1338 | } |
| 1339 | |
| 1340 | void wxTextCtrl::DoSetInsertionPoint(wxTextPos pos) |
| 1341 | { |
| 1342 | MoveInsertionPoint(pos); |
| 1343 | |
| 1344 | ShowPosition(pos); |
| 1345 | } |
| 1346 | |
| 1347 | void wxTextCtrl::SetInsertionPointEnd() |
| 1348 | { |
| 1349 | SetInsertionPoint(GetLastPosition()); |
| 1350 | } |
| 1351 | |
| 1352 | wxTextPos wxTextCtrl::GetInsertionPoint() const |
| 1353 | { |
| 1354 | return m_curPos; |
| 1355 | } |
| 1356 | |
| 1357 | wxTextPos wxTextCtrl::GetLastPosition() const |
| 1358 | { |
| 1359 | wxTextPos pos; |
| 1360 | if ( IsSingleLine() ) |
| 1361 | { |
| 1362 | pos = m_value.length(); |
| 1363 | } |
| 1364 | else // multiline |
| 1365 | { |
| 1366 | #ifdef WXDEBUG_TEXT |
| 1367 | pos = 0; |
| 1368 | size_t nLineCount = GetLineCount(); |
| 1369 | for ( size_t nLine = 0; nLine < nLineCount; nLine++ ) |
| 1370 | { |
| 1371 | // +1 is because the positions at the end of this line and of the |
| 1372 | // start of the next one are different |
| 1373 | pos += GetLines()[nLine].length() + 1; |
| 1374 | } |
| 1375 | |
| 1376 | if ( pos > 0 ) |
| 1377 | { |
| 1378 | // the last position is at the end of the last line, not in the |
| 1379 | // beginning of the next line after it |
| 1380 | pos--; |
| 1381 | } |
| 1382 | |
| 1383 | // more probable reason of this would be to forget to update m_posLast |
| 1384 | wxASSERT_MSG( pos == m_posLast, _T("bug in GetLastPosition()") ); |
| 1385 | #endif // WXDEBUG_TEXT |
| 1386 | |
| 1387 | pos = m_posLast; |
| 1388 | } |
| 1389 | |
| 1390 | return pos; |
| 1391 | } |
| 1392 | |
| 1393 | // ---------------------------------------------------------------------------- |
| 1394 | // selection |
| 1395 | // ---------------------------------------------------------------------------- |
| 1396 | |
| 1397 | void wxTextCtrl::GetSelection(wxTextPos* from, wxTextPos* to) const |
| 1398 | { |
| 1399 | if ( from ) |
| 1400 | *from = m_selStart; |
| 1401 | if ( to ) |
| 1402 | *to = m_selEnd; |
| 1403 | } |
| 1404 | |
| 1405 | wxString wxTextCtrl::GetSelectionText() const |
| 1406 | { |
| 1407 | wxString sel; |
| 1408 | |
| 1409 | if ( HasSelection() ) |
| 1410 | { |
| 1411 | if ( IsSingleLine() ) |
| 1412 | { |
| 1413 | sel = m_value.Mid(m_selStart, m_selEnd - m_selStart); |
| 1414 | } |
| 1415 | else // multiline |
| 1416 | { |
| 1417 | wxTextCoord colStart, lineStart, |
| 1418 | colEnd, lineEnd; |
| 1419 | PositionToXY(m_selStart, &colStart, &lineStart); |
| 1420 | PositionToXY(m_selEnd, &colEnd, &lineEnd); |
| 1421 | |
| 1422 | // as always, we need to check for the special case when the start |
| 1423 | // and end line are the same |
| 1424 | if ( lineEnd == lineStart ) |
| 1425 | { |
| 1426 | sel = GetLines()[lineStart].Mid(colStart, colEnd - colStart); |
| 1427 | } |
| 1428 | else // sel on multiple lines |
| 1429 | { |
| 1430 | // take the end of the first line |
| 1431 | sel = GetLines()[lineStart].c_str() + colStart; |
| 1432 | sel += _T('\n'); |
| 1433 | |
| 1434 | // all intermediate ones |
| 1435 | for ( wxTextCoord line = lineStart + 1; line < lineEnd; line++ ) |
| 1436 | { |
| 1437 | sel << GetLines()[line] << _T('\n'); |
| 1438 | } |
| 1439 | |
| 1440 | // and the start of the last one |
| 1441 | sel += GetLines()[lineEnd].Left(colEnd); |
| 1442 | } |
| 1443 | } |
| 1444 | } |
| 1445 | |
| 1446 | return sel; |
| 1447 | } |
| 1448 | |
| 1449 | void wxTextCtrl::SetSelection(wxTextPos from, wxTextPos to) |
| 1450 | { |
| 1451 | // selecting till -1 is the same as selecting to the end |
| 1452 | if ( to == -1 ) |
| 1453 | { |
| 1454 | // and selecting (-1, -1) range is the same as selecting everything, by |
| 1455 | // convention |
| 1456 | if ( from == -1 ) |
| 1457 | from = 0; |
| 1458 | to = GetLastPosition(); |
| 1459 | } |
| 1460 | |
| 1461 | if ( from == -1 || to == from ) |
| 1462 | { |
| 1463 | ClearSelection(); |
| 1464 | } |
| 1465 | else // valid sel range |
| 1466 | { |
| 1467 | // remember the 'to' position as the current position, used to move the |
| 1468 | // caret there later |
| 1469 | wxTextPos toOrig = to; |
| 1470 | |
| 1471 | OrderPositions(from, to); |
| 1472 | |
| 1473 | wxCHECK_RET( to <= GetLastPosition(), |
| 1474 | _T("invalid range in wxTextCtrl::SetSelection") ); |
| 1475 | |
| 1476 | if ( from != m_selStart || to != m_selEnd ) |
| 1477 | { |
| 1478 | // we need to use temp vars as RefreshTextRange() may call DoDraw() |
| 1479 | // directly and so m_selStart/End must be reset by then |
| 1480 | wxTextPos selStartOld = m_selStart, |
| 1481 | selEndOld = m_selEnd; |
| 1482 | |
| 1483 | m_selStart = from; |
| 1484 | m_selEnd = to; |
| 1485 | |
| 1486 | wxLogTrace(_T("text"), _T("Selection range is %ld-%ld"), |
| 1487 | m_selStart, m_selEnd); |
| 1488 | |
| 1489 | // refresh only the part of text which became (un)selected if |
| 1490 | // possible |
| 1491 | if ( selStartOld == m_selStart ) |
| 1492 | { |
| 1493 | RefreshTextRange(selEndOld, m_selEnd); |
| 1494 | } |
| 1495 | else if ( selEndOld == m_selEnd ) |
| 1496 | { |
| 1497 | RefreshTextRange(m_selStart, selStartOld); |
| 1498 | } |
| 1499 | else |
| 1500 | { |
| 1501 | // OPT: could check for other cases too but it is probably not |
| 1502 | // worth it as the two above are the most common ones |
| 1503 | if ( selStartOld != -1 ) |
| 1504 | RefreshTextRange(selStartOld, selEndOld); |
| 1505 | if ( m_selStart != -1 ) |
| 1506 | RefreshTextRange(m_selStart, m_selEnd); |
| 1507 | } |
| 1508 | |
| 1509 | // we need to fully repaint the invalidated areas of the window |
| 1510 | // before scrolling it (from DoSetInsertionPoint which is typically |
| 1511 | // called after SetSelection()), otherwise they may stay unpainted |
| 1512 | m_targetWindow->Update(); |
| 1513 | } |
| 1514 | //else: nothing to do |
| 1515 | |
| 1516 | // the insertion point is put at the location where the caret was moved |
| 1517 | DoSetInsertionPoint(toOrig); |
| 1518 | } |
| 1519 | } |
| 1520 | |
| 1521 | void wxTextCtrl::ClearSelection() |
| 1522 | { |
| 1523 | if ( HasSelection() ) |
| 1524 | { |
| 1525 | // we need to use temp vars as RefreshTextRange() may call DoDraw() |
| 1526 | // directly (see above as well) |
| 1527 | wxTextPos selStart = m_selStart, |
| 1528 | selEnd = m_selEnd; |
| 1529 | |
| 1530 | // no selection any more |
| 1531 | m_selStart = |
| 1532 | m_selEnd = -1; |
| 1533 | |
| 1534 | // refresh the old selection |
| 1535 | RefreshTextRange(selStart, selEnd); |
| 1536 | } |
| 1537 | |
| 1538 | // the anchor should be moved even if there was no selection previously |
| 1539 | m_selAnchor = m_curPos; |
| 1540 | } |
| 1541 | |
| 1542 | void wxTextCtrl::RemoveSelection() |
| 1543 | { |
| 1544 | if ( !HasSelection() ) |
| 1545 | return; |
| 1546 | |
| 1547 | Remove(m_selStart, m_selEnd); |
| 1548 | } |
| 1549 | |
| 1550 | bool wxTextCtrl::GetSelectedPartOfLine(wxTextCoord line, |
| 1551 | wxTextPos *start, wxTextPos *end) const |
| 1552 | { |
| 1553 | if ( start ) |
| 1554 | *start = -1; |
| 1555 | if ( end ) |
| 1556 | *end = -1; |
| 1557 | |
| 1558 | if ( !HasSelection() ) |
| 1559 | { |
| 1560 | // no selection at all, hence no selection in this line |
| 1561 | return false; |
| 1562 | } |
| 1563 | |
| 1564 | wxTextCoord lineStart, colStart; |
| 1565 | PositionToXY(m_selStart, &colStart, &lineStart); |
| 1566 | if ( lineStart > line ) |
| 1567 | { |
| 1568 | // this line is entirely above the selection |
| 1569 | return false; |
| 1570 | } |
| 1571 | |
| 1572 | wxTextCoord lineEnd, colEnd; |
| 1573 | PositionToXY(m_selEnd, &colEnd, &lineEnd); |
| 1574 | if ( lineEnd < line ) |
| 1575 | { |
| 1576 | // this line is entirely below the selection |
| 1577 | return false; |
| 1578 | } |
| 1579 | |
| 1580 | if ( line == lineStart ) |
| 1581 | { |
| 1582 | if ( start ) |
| 1583 | *start = colStart; |
| 1584 | if ( end ) |
| 1585 | *end = lineEnd == lineStart ? colEnd : GetLineLength(line); |
| 1586 | } |
| 1587 | else if ( line == lineEnd ) |
| 1588 | { |
| 1589 | if ( start ) |
| 1590 | *start = lineEnd == lineStart ? colStart : 0; |
| 1591 | if ( end ) |
| 1592 | *end = colEnd; |
| 1593 | } |
| 1594 | else // the line is entirely inside the selection |
| 1595 | { |
| 1596 | if ( start ) |
| 1597 | *start = 0; |
| 1598 | if ( end ) |
| 1599 | *end = GetLineLength(line); |
| 1600 | } |
| 1601 | |
| 1602 | return true; |
| 1603 | } |
| 1604 | |
| 1605 | // ---------------------------------------------------------------------------- |
| 1606 | // flags |
| 1607 | // ---------------------------------------------------------------------------- |
| 1608 | |
| 1609 | bool wxTextCtrl::IsModified() const |
| 1610 | { |
| 1611 | return m_isModified; |
| 1612 | } |
| 1613 | |
| 1614 | bool wxTextCtrl::IsEditable() const |
| 1615 | { |
| 1616 | // disabled control can never be edited |
| 1617 | return m_isEditable && IsEnabled(); |
| 1618 | } |
| 1619 | |
| 1620 | void wxTextCtrl::MarkDirty() |
| 1621 | { |
| 1622 | m_isModified = true; |
| 1623 | } |
| 1624 | |
| 1625 | void wxTextCtrl::DiscardEdits() |
| 1626 | { |
| 1627 | m_isModified = false; |
| 1628 | } |
| 1629 | |
| 1630 | void wxTextCtrl::SetEditable(bool editable) |
| 1631 | { |
| 1632 | if ( editable != m_isEditable ) |
| 1633 | { |
| 1634 | m_isEditable = editable; |
| 1635 | |
| 1636 | // the caret (dis)appears |
| 1637 | CreateCaret(); |
| 1638 | |
| 1639 | // the appearance of the control might have changed |
| 1640 | Refresh(); |
| 1641 | } |
| 1642 | } |
| 1643 | |
| 1644 | // ---------------------------------------------------------------------------- |
| 1645 | // col/lines <-> position correspondence |
| 1646 | // ---------------------------------------------------------------------------- |
| 1647 | |
| 1648 | /* |
| 1649 | A few remarks about this stuff: |
| 1650 | |
| 1651 | o The numbering of the text control columns/rows starts from 0. |
| 1652 | o Start of first line is position 0, its last position is line.length() |
| 1653 | o Start of the next line is the last position of the previous line + 1 |
| 1654 | */ |
| 1655 | |
| 1656 | int wxTextCtrl::GetLineLength(wxTextCoord line) const |
| 1657 | { |
| 1658 | if ( IsSingleLine() ) |
| 1659 | { |
| 1660 | wxASSERT_MSG( line == 0, _T("invalid GetLineLength() parameter") ); |
| 1661 | |
| 1662 | return m_value.length(); |
| 1663 | } |
| 1664 | else // multiline |
| 1665 | { |
| 1666 | wxCHECK_MSG( (size_t)line < GetLineCount(), -1, |
| 1667 | _T("line index out of range") ); |
| 1668 | |
| 1669 | return GetLines()[line].length(); |
| 1670 | } |
| 1671 | } |
| 1672 | |
| 1673 | wxString wxTextCtrl::GetLineText(wxTextCoord line) const |
| 1674 | { |
| 1675 | if ( IsSingleLine() ) |
| 1676 | { |
| 1677 | wxASSERT_MSG( line == 0, _T("invalid GetLineLength() parameter") ); |
| 1678 | |
| 1679 | return m_value; |
| 1680 | } |
| 1681 | else // multiline |
| 1682 | { |
| 1683 | //this is called during DoGetBestSize |
| 1684 | if (line == 0 && GetLineCount() == 0) return wxEmptyString ; |
| 1685 | |
| 1686 | wxCHECK_MSG( (size_t)line < GetLineCount(), wxEmptyString, |
| 1687 | _T("line index out of range") ); |
| 1688 | |
| 1689 | return GetLines()[line]; |
| 1690 | } |
| 1691 | } |
| 1692 | |
| 1693 | int wxTextCtrl::GetNumberOfLines() const |
| 1694 | { |
| 1695 | // there is always 1 line, even if the text is empty |
| 1696 | return IsSingleLine() ? 1 : GetLineCount(); |
| 1697 | } |
| 1698 | |
| 1699 | wxTextPos wxTextCtrl::XYToPosition(wxTextCoord x, wxTextCoord y) const |
| 1700 | { |
| 1701 | // note that this method should accept any values of x and y and return -1 |
| 1702 | // if they are out of range |
| 1703 | if ( IsSingleLine() ) |
| 1704 | { |
| 1705 | return ( x > GetLastPosition() || y > 0 ) ? wxOutOfRangeTextCoord : x; |
| 1706 | } |
| 1707 | else // multiline |
| 1708 | { |
| 1709 | if ( (size_t)y >= GetLineCount() ) |
| 1710 | { |
| 1711 | // this position is below the text |
| 1712 | return GetLastPosition(); |
| 1713 | } |
| 1714 | |
| 1715 | wxTextPos pos = 0; |
| 1716 | for ( size_t nLine = 0; nLine < (size_t)y; nLine++ ) |
| 1717 | { |
| 1718 | // +1 is because the positions at the end of this line and of the |
| 1719 | // start of the next one are different |
| 1720 | pos += GetLines()[nLine].length() + 1; |
| 1721 | } |
| 1722 | |
| 1723 | // take into account also the position in line |
| 1724 | if ( (size_t)x > GetLines()[y].length() ) |
| 1725 | { |
| 1726 | // don't return position in the next line |
| 1727 | x = GetLines()[y].length(); |
| 1728 | } |
| 1729 | |
| 1730 | return pos + x; |
| 1731 | } |
| 1732 | } |
| 1733 | |
| 1734 | bool wxTextCtrl::PositionToXY(wxTextPos pos, |
| 1735 | wxTextCoord *x, wxTextCoord *y) const |
| 1736 | { |
| 1737 | if ( IsSingleLine() ) |
| 1738 | { |
| 1739 | if ( (size_t)pos > m_value.length() ) |
| 1740 | return false; |
| 1741 | |
| 1742 | if ( x ) |
| 1743 | *x = pos; |
| 1744 | if ( y ) |
| 1745 | *y = 0; |
| 1746 | |
| 1747 | return true; |
| 1748 | } |
| 1749 | else // multiline |
| 1750 | { |
| 1751 | wxTextPos posCur = 0; |
| 1752 | size_t nLineCount = GetLineCount(); |
| 1753 | for ( size_t nLine = 0; nLine < nLineCount; nLine++ ) |
| 1754 | { |
| 1755 | // +1 is because the start the start of the next line is one |
| 1756 | // position after the end of this one |
| 1757 | wxTextPos posNew = posCur + GetLines()[nLine].length() + 1; |
| 1758 | if ( posNew > pos ) |
| 1759 | { |
| 1760 | // we've found the line, now just calc the column |
| 1761 | if ( x ) |
| 1762 | *x = pos - posCur; |
| 1763 | |
| 1764 | if ( y ) |
| 1765 | *y = nLine; |
| 1766 | |
| 1767 | #ifdef WXDEBUG_TEXT |
| 1768 | wxASSERT_MSG( XYToPosition(pos - posCur, nLine) == pos, |
| 1769 | _T("XYToPosition() or PositionToXY() broken") ); |
| 1770 | #endif // WXDEBUG_TEXT |
| 1771 | |
| 1772 | return true; |
| 1773 | } |
| 1774 | else // go further down |
| 1775 | { |
| 1776 | posCur = posNew; |
| 1777 | } |
| 1778 | } |
| 1779 | |
| 1780 | // beyond the last line |
| 1781 | return false; |
| 1782 | } |
| 1783 | } |
| 1784 | |
| 1785 | wxTextCoord wxTextCtrl::GetRowsPerLine(wxTextCoord line) const |
| 1786 | { |
| 1787 | // a normal line has one row |
| 1788 | wxTextCoord numRows = 1; |
| 1789 | |
| 1790 | if ( WrapLines() ) |
| 1791 | { |
| 1792 | // add the number of additional rows |
| 1793 | numRows += WData().m_linesData[line].GetExtraRowCount(); |
| 1794 | } |
| 1795 | |
| 1796 | return numRows; |
| 1797 | } |
| 1798 | |
| 1799 | wxTextCoord wxTextCtrl::GetRowCount() const |
| 1800 | { |
| 1801 | wxTextCoord count = GetLineCount(); |
| 1802 | if (count == 0) |
| 1803 | return 0; |
| 1804 | if ( WrapLines() ) |
| 1805 | { |
| 1806 | count = GetFirstRowOfLine(count - 1) + |
| 1807 | WData().m_linesData[count - 1].GetRowCount(); |
| 1808 | } |
| 1809 | |
| 1810 | return count; |
| 1811 | } |
| 1812 | |
| 1813 | wxTextCoord wxTextCtrl::GetRowAfterLine(wxTextCoord line) const |
| 1814 | { |
| 1815 | if ( !WrapLines() ) |
| 1816 | return line + 1; |
| 1817 | |
| 1818 | if ( !WData().IsValidLine(line) ) |
| 1819 | { |
| 1820 | LayoutLines(line); |
| 1821 | } |
| 1822 | |
| 1823 | return WData().m_linesData[line].GetNextRow(); |
| 1824 | } |
| 1825 | |
| 1826 | wxTextCoord wxTextCtrl::GetFirstRowOfLine(wxTextCoord line) const |
| 1827 | { |
| 1828 | if ( !WrapLines() ) |
| 1829 | return line; |
| 1830 | |
| 1831 | if ( !WData().IsValidLine(line) ) |
| 1832 | { |
| 1833 | LayoutLines(line); |
| 1834 | } |
| 1835 | |
| 1836 | return WData().m_linesData[line].GetFirstRow(); |
| 1837 | } |
| 1838 | |
| 1839 | bool wxTextCtrl::PositionToLogicalXY(wxTextPos pos, |
| 1840 | wxCoord *xOut, |
| 1841 | wxCoord *yOut) const |
| 1842 | { |
| 1843 | wxTextCoord col, line; |
| 1844 | |
| 1845 | // optimization for special (but common) case when we already have the col |
| 1846 | // and line |
| 1847 | if ( pos == m_curPos ) |
| 1848 | { |
| 1849 | col = m_curCol; |
| 1850 | line = m_curRow; |
| 1851 | } |
| 1852 | else // must really calculate col/line from pos |
| 1853 | { |
| 1854 | if ( !PositionToXY(pos, &col, &line) ) |
| 1855 | return false; |
| 1856 | } |
| 1857 | |
| 1858 | int hLine = GetLineHeight(); |
| 1859 | wxCoord x, y; |
| 1860 | wxString textLine = GetLineText(line); |
| 1861 | if ( IsSingleLine() || !WrapLines() ) |
| 1862 | { |
| 1863 | x = GetTextWidth(textLine.Left(col)); |
| 1864 | y = line*hLine; |
| 1865 | } |
| 1866 | else // difficult case: multline control with line wrap |
| 1867 | { |
| 1868 | y = GetFirstRowOfLine(line); |
| 1869 | |
| 1870 | wxTextCoord colRowStart; |
| 1871 | y += GetRowInLine(line, col, &colRowStart); |
| 1872 | |
| 1873 | y *= hLine; |
| 1874 | |
| 1875 | // x is the width of the text before this position in this row |
| 1876 | x = GetTextWidth(textLine.Mid(colRowStart, col - colRowStart)); |
| 1877 | } |
| 1878 | |
| 1879 | if ( xOut ) |
| 1880 | *xOut = x; |
| 1881 | if ( yOut ) |
| 1882 | *yOut = y; |
| 1883 | |
| 1884 | return true; |
| 1885 | } |
| 1886 | |
| 1887 | bool wxTextCtrl::PositionToDeviceXY(wxTextPos pos, |
| 1888 | wxCoord *xOut, |
| 1889 | wxCoord *yOut) const |
| 1890 | { |
| 1891 | wxCoord x, y; |
| 1892 | if ( !PositionToLogicalXY(pos, &x, &y) ) |
| 1893 | return false; |
| 1894 | |
| 1895 | // finally translate the logical text rect coords into physical client |
| 1896 | // coords |
| 1897 | CalcScrolledPosition(m_rectText.x + x, m_rectText.y + y, xOut, yOut); |
| 1898 | |
| 1899 | return true; |
| 1900 | } |
| 1901 | |
| 1902 | wxPoint wxTextCtrl::GetCaretPosition() const |
| 1903 | { |
| 1904 | wxCoord xCaret, yCaret; |
| 1905 | if ( !PositionToDeviceXY(m_curPos, &xCaret, &yCaret) ) |
| 1906 | { |
| 1907 | wxFAIL_MSG( _T("Caret can't be beyond the text!") ); |
| 1908 | } |
| 1909 | |
| 1910 | return wxPoint(xCaret, yCaret); |
| 1911 | } |
| 1912 | |
| 1913 | // pos may be -1 to show the current position |
| 1914 | void wxTextCtrl::ShowPosition(wxTextPos pos) |
| 1915 | { |
| 1916 | bool showCaret = GetCaret() && GetCaret()->IsVisible(); |
| 1917 | if (showCaret) |
| 1918 | HideCaret(); |
| 1919 | |
| 1920 | if ( IsSingleLine() ) |
| 1921 | { |
| 1922 | ShowHorzPosition(GetTextWidth(m_value.Left(pos))); |
| 1923 | } |
| 1924 | else if ( MData().m_scrollRangeX || MData().m_scrollRangeY ) // multiline with scrollbars |
| 1925 | { |
| 1926 | int xStart, yStart; |
| 1927 | GetViewStart(&xStart, &yStart); |
| 1928 | |
| 1929 | if ( pos == -1 ) |
| 1930 | pos = m_curPos; |
| 1931 | |
| 1932 | wxCoord x, y; |
| 1933 | PositionToLogicalXY(pos, &x, &y); |
| 1934 | |
| 1935 | wxRect rectText = GetRealTextArea(); |
| 1936 | |
| 1937 | // scroll the position vertically into view: if it is currently above |
| 1938 | // it, make it the first one, otherwise the last one |
| 1939 | if ( MData().m_scrollRangeY ) |
| 1940 | { |
| 1941 | y /= GetLineHeight(); |
| 1942 | |
| 1943 | if ( y < yStart ) |
| 1944 | { |
| 1945 | Scroll(0, y); |
| 1946 | } |
| 1947 | else // we are currently in or below the view area |
| 1948 | { |
| 1949 | // find the last row currently shown |
| 1950 | wxTextCoord yEnd; |
| 1951 | |
| 1952 | if ( WrapLines() ) |
| 1953 | { |
| 1954 | // to find the last row we need to use the generic HitTest |
| 1955 | wxTextCoord col; |
| 1956 | |
| 1957 | // OPT this is a bit silly: we undo this in HitTest(), so |
| 1958 | // it would be better to factor out the common |
| 1959 | // functionality into a separate function (OTOH it |
| 1960 | // won't probably save us that much) |
| 1961 | wxPoint pt(0, rectText.height - 1); |
| 1962 | pt += GetClientAreaOrigin(); |
| 1963 | pt += m_rectText.GetPosition(); |
| 1964 | HitTest(pt, &col, &yEnd); |
| 1965 | |
| 1966 | // find the row inside the line |
| 1967 | yEnd = GetFirstRowOfLine(yEnd) + GetRowInLine(yEnd, col); |
| 1968 | } |
| 1969 | else |
| 1970 | { |
| 1971 | // finding the last line is easy if each line has exactly |
| 1972 | // one row |
| 1973 | yEnd = yStart + rectText.height / GetLineHeight(); |
| 1974 | } |
| 1975 | |
| 1976 | if ( yEnd < y ) |
| 1977 | { |
| 1978 | // scroll down: the current item should appear at the |
| 1979 | // bottom of the view |
| 1980 | Scroll(0, y - (yEnd - yStart)); |
| 1981 | } |
| 1982 | } |
| 1983 | } |
| 1984 | |
| 1985 | // scroll the position horizontally into view |
| 1986 | // |
| 1987 | // we follow what I believe to be Windows behaviour here, that is if |
| 1988 | // the position is already entirely in the view we do nothing, but if |
| 1989 | // we do have to scroll the window to bring it into view, we scroll it |
| 1990 | // not just enough to show the position but slightly more so that this |
| 1991 | // position is at 1/3 of the window width from the closest border to it |
| 1992 | // (I'm not sure that Windows does exactly this but it looks like this) |
| 1993 | if ( MData().m_scrollRangeX ) |
| 1994 | { |
| 1995 | // unlike for the rows, xStart doesn't correspond to the starting |
| 1996 | // column as they all have different widths, so we need to |
| 1997 | // translate everything to pixels |
| 1998 | |
| 1999 | // we want the text between x and x2 be entirely inside the view |
| 2000 | // (i.e. the current character) |
| 2001 | |
| 2002 | // make xStart the first visible pixel (and not position) |
| 2003 | int wChar = GetAverageWidth(); |
| 2004 | xStart *= wChar; |
| 2005 | |
| 2006 | if ( x < xStart ) |
| 2007 | { |
| 2008 | // we want the position of this column be 1/3 to the right of |
| 2009 | // the left edge |
| 2010 | x -= rectText.width / 3; |
| 2011 | if ( x < 0 ) |
| 2012 | x = 0; |
| 2013 | Scroll(x / wChar, y); |
| 2014 | } |
| 2015 | else // maybe we're beyond the right border of the view? |
| 2016 | { |
| 2017 | wxTextCoord col, row; |
| 2018 | if ( PositionToXY(pos, &col, &row) ) |
| 2019 | { |
| 2020 | wxString lineText = GetLineText(row); |
| 2021 | wxCoord x2 = x + GetTextWidth(lineText[(size_t)col]); |
| 2022 | if ( x2 > xStart + rectText.width ) |
| 2023 | { |
| 2024 | // we want the position of this column be 1/3 to the |
| 2025 | // left of the right edge, i.e. 2/3 right of the left |
| 2026 | // one |
| 2027 | x2 -= (2*rectText.width)/3; |
| 2028 | if ( x2 < 0 ) |
| 2029 | x2 = 0; |
| 2030 | Scroll(x2 / wChar, row); |
| 2031 | } |
| 2032 | } |
| 2033 | } |
| 2034 | } |
| 2035 | } |
| 2036 | //else: multiline but no scrollbars, hence nothing to do |
| 2037 | |
| 2038 | if (showCaret) |
| 2039 | ShowCaret(); |
| 2040 | } |
| 2041 | |
| 2042 | // ---------------------------------------------------------------------------- |
| 2043 | // word stuff |
| 2044 | // ---------------------------------------------------------------------------- |
| 2045 | |
| 2046 | /* |
| 2047 | TODO: we could have (easy to do) vi-like options for word movement, i.e. |
| 2048 | distinguish between inlusive/exclusive words and between words and |
| 2049 | WORDS (in vim sense) and also, finally, make the set of characters |
| 2050 | which make up a word configurable - currently we use the exclusive |
| 2051 | WORDS only (coincidentally, this is what Windows edit control does) |
| 2052 | |
| 2053 | For future references, here is what vim help says: |
| 2054 | |
| 2055 | A word consists of a sequence of letters, digits and underscores, or |
| 2056 | a sequence of other non-blank characters, separated with white space |
| 2057 | (spaces, tabs, <EOL>). This can be changed with the 'iskeyword' |
| 2058 | option. |
| 2059 | |
| 2060 | A WORD consists of a sequence of non-blank characters, separated with |
| 2061 | white space. An empty line is also considered to be a word and a |
| 2062 | WORD. |
| 2063 | */ |
| 2064 | |
| 2065 | static inline bool IsWordChar(wxChar ch) |
| 2066 | { |
| 2067 | return !wxIsspace(ch); |
| 2068 | } |
| 2069 | |
| 2070 | wxTextPos wxTextCtrl::GetWordStart() const |
| 2071 | { |
| 2072 | if ( m_curPos == -1 || m_curPos == 0 ) |
| 2073 | return 0; |
| 2074 | |
| 2075 | if ( m_curCol == 0 ) |
| 2076 | { |
| 2077 | // go to the end of the previous line |
| 2078 | return m_curPos - 1; |
| 2079 | } |
| 2080 | |
| 2081 | // it shouldn't be possible to learn where the word starts in the password |
| 2082 | // text entry zone |
| 2083 | if ( IsPassword() ) |
| 2084 | return 0; |
| 2085 | |
| 2086 | // start at the previous position |
| 2087 | const wxChar *p0 = GetLineText(m_curRow).c_str(); |
| 2088 | const wxChar *p = p0 + m_curCol - 1; |
| 2089 | |
| 2090 | // find the end of the previous word |
| 2091 | while ( (p > p0) && !IsWordChar(*p) ) |
| 2092 | p--; |
| 2093 | |
| 2094 | // now find the beginning of this word |
| 2095 | while ( (p > p0) && IsWordChar(*p) ) |
| 2096 | p--; |
| 2097 | |
| 2098 | // we might have gone too far |
| 2099 | if ( !IsWordChar(*p) ) |
| 2100 | p++; |
| 2101 | |
| 2102 | return (m_curPos - m_curCol) + p - p0; |
| 2103 | } |
| 2104 | |
| 2105 | wxTextPos wxTextCtrl::GetWordEnd() const |
| 2106 | { |
| 2107 | if ( m_curPos == -1 ) |
| 2108 | return 0; |
| 2109 | |
| 2110 | wxString line = GetLineText(m_curRow); |
| 2111 | if ( (size_t)m_curCol == line.length() ) |
| 2112 | { |
| 2113 | // if we're on the last position in the line, go to the next one - if |
| 2114 | // it exists |
| 2115 | wxTextPos pos = m_curPos; |
| 2116 | if ( pos < GetLastPosition() ) |
| 2117 | pos++; |
| 2118 | |
| 2119 | return pos; |
| 2120 | } |
| 2121 | |
| 2122 | // it shouldn't be possible to learn where the word ends in the password |
| 2123 | // text entry zone |
| 2124 | if ( IsPassword() ) |
| 2125 | return GetLastPosition(); |
| 2126 | |
| 2127 | // start at the current position |
| 2128 | const wxChar *p0 = line.c_str(); |
| 2129 | const wxChar *p = p0 + m_curCol; |
| 2130 | |
| 2131 | // find the start of the next word |
| 2132 | while ( *p && !IsWordChar(*p) ) |
| 2133 | p++; |
| 2134 | |
| 2135 | // now find the end of it |
| 2136 | while ( *p && IsWordChar(*p) ) |
| 2137 | p++; |
| 2138 | |
| 2139 | // and find the start of the next word |
| 2140 | while ( *p && !IsWordChar(*p) ) |
| 2141 | p++; |
| 2142 | |
| 2143 | return (m_curPos - m_curCol) + p - p0; |
| 2144 | } |
| 2145 | |
| 2146 | // ---------------------------------------------------------------------------- |
| 2147 | // clipboard stuff |
| 2148 | // ---------------------------------------------------------------------------- |
| 2149 | |
| 2150 | void wxTextCtrl::Copy() |
| 2151 | { |
| 2152 | #if wxUSE_CLIPBOARD |
| 2153 | if ( HasSelection() ) |
| 2154 | { |
| 2155 | wxClipboardLocker clipLock; |
| 2156 | |
| 2157 | // wxTextFile::Translate() is needed to transform all '\n' into "\r\n" |
| 2158 | wxString text = wxTextFile::Translate(GetTextToShow(GetSelectionText())); |
| 2159 | wxTextDataObject *data = new wxTextDataObject(text); |
| 2160 | wxTheClipboard->SetData(data); |
| 2161 | } |
| 2162 | #endif // wxUSE_CLIPBOARD |
| 2163 | } |
| 2164 | |
| 2165 | void wxTextCtrl::Cut() |
| 2166 | { |
| 2167 | (void)DoCut(); |
| 2168 | } |
| 2169 | |
| 2170 | bool wxTextCtrl::DoCut() |
| 2171 | { |
| 2172 | if ( !HasSelection() ) |
| 2173 | return false; |
| 2174 | |
| 2175 | Copy(); |
| 2176 | |
| 2177 | RemoveSelection(); |
| 2178 | |
| 2179 | return true; |
| 2180 | } |
| 2181 | |
| 2182 | void wxTextCtrl::Paste() |
| 2183 | { |
| 2184 | (void)DoPaste(); |
| 2185 | } |
| 2186 | |
| 2187 | bool wxTextCtrl::DoPaste() |
| 2188 | { |
| 2189 | #if wxUSE_CLIPBOARD |
| 2190 | wxClipboardLocker clipLock; |
| 2191 | |
| 2192 | wxTextDataObject data; |
| 2193 | if ( wxTheClipboard->IsSupported(data.GetFormat()) |
| 2194 | && wxTheClipboard->GetData(data) ) |
| 2195 | { |
| 2196 | // reverse transformation: '\r\n\" -> '\n' |
| 2197 | wxString text = wxTextFile::Translate(data.GetText(), |
| 2198 | wxTextFileType_Unix); |
| 2199 | if ( !text.empty() ) |
| 2200 | { |
| 2201 | WriteText(text); |
| 2202 | |
| 2203 | return true; |
| 2204 | } |
| 2205 | } |
| 2206 | #endif // wxUSE_CLIPBOARD |
| 2207 | |
| 2208 | return false; |
| 2209 | } |
| 2210 | |
| 2211 | // ---------------------------------------------------------------------------- |
| 2212 | // Undo and redo |
| 2213 | // ---------------------------------------------------------------------------- |
| 2214 | |
| 2215 | wxTextCtrlInsertCommand * |
| 2216 | wxTextCtrlCommandProcessor::IsInsertCommand(wxCommand *command) |
| 2217 | { |
| 2218 | return (wxTextCtrlInsertCommand *) |
| 2219 | (command && (command->GetName() == wxTEXT_COMMAND_INSERT) |
| 2220 | ? command : NULL); |
| 2221 | } |
| 2222 | |
| 2223 | void wxTextCtrlCommandProcessor::Store(wxCommand *command) |
| 2224 | { |
| 2225 | wxTextCtrlInsertCommand *cmdIns = IsInsertCommand(command); |
| 2226 | if ( cmdIns ) |
| 2227 | { |
| 2228 | if ( IsCompressing() ) |
| 2229 | { |
| 2230 | wxTextCtrlInsertCommand * |
| 2231 | cmdInsLast = IsInsertCommand(GetCurrentCommand()); |
| 2232 | |
| 2233 | // it is possible that we don't have any last command at all if, |
| 2234 | // for example, it was undone since the last Store(), so deal with |
| 2235 | // this case too |
| 2236 | if ( cmdInsLast ) |
| 2237 | { |
| 2238 | cmdInsLast->Append(cmdIns); |
| 2239 | |
| 2240 | delete cmdIns; |
| 2241 | |
| 2242 | // don't need to call the base class version |
| 2243 | return; |
| 2244 | } |
| 2245 | } |
| 2246 | |
| 2247 | // append the following insert commands to this one |
| 2248 | m_compressInserts = true; |
| 2249 | |
| 2250 | // let the base class version will do the job normally |
| 2251 | } |
| 2252 | else // not an insert command |
| 2253 | { |
| 2254 | // stop compressing insert commands - this won't work with the last |
| 2255 | // command not being an insert one anyhow |
| 2256 | StopCompressing(); |
| 2257 | |
| 2258 | // let the base class version will do the job normally |
| 2259 | } |
| 2260 | |
| 2261 | wxCommandProcessor::Store(command); |
| 2262 | } |
| 2263 | |
| 2264 | void wxTextCtrlInsertCommand::Append(wxTextCtrlInsertCommand *other) |
| 2265 | { |
| 2266 | m_text += other->m_text; |
| 2267 | } |
| 2268 | |
| 2269 | bool wxTextCtrlInsertCommand::CanUndo() const |
| 2270 | { |
| 2271 | return m_from != -1; |
| 2272 | } |
| 2273 | |
| 2274 | bool wxTextCtrlInsertCommand::Do(wxTextCtrl *text) |
| 2275 | { |
| 2276 | // the text is going to be inserted at the current position, remember where |
| 2277 | // exactly it is |
| 2278 | m_from = text->GetInsertionPoint(); |
| 2279 | |
| 2280 | // and now do insert it |
| 2281 | text->WriteText(m_text); |
| 2282 | |
| 2283 | return true; |
| 2284 | } |
| 2285 | |
| 2286 | bool wxTextCtrlInsertCommand::Undo(wxTextCtrl *text) |
| 2287 | { |
| 2288 | wxCHECK_MSG( CanUndo(), false, _T("impossible to undo insert cmd") ); |
| 2289 | |
| 2290 | // remove the text from where we inserted it |
| 2291 | text->Remove(m_from, m_from + m_text.length()); |
| 2292 | |
| 2293 | return true; |
| 2294 | } |
| 2295 | |
| 2296 | bool wxTextCtrlRemoveCommand::CanUndo() const |
| 2297 | { |
| 2298 | // if we were executed, we should have the text we removed |
| 2299 | return !m_textDeleted.empty(); |
| 2300 | } |
| 2301 | |
| 2302 | bool wxTextCtrlRemoveCommand::Do(wxTextCtrl *text) |
| 2303 | { |
| 2304 | text->SetSelection(m_from, m_to); |
| 2305 | m_textDeleted = text->GetSelectionText(); |
| 2306 | text->RemoveSelection(); |
| 2307 | |
| 2308 | return true; |
| 2309 | } |
| 2310 | |
| 2311 | bool wxTextCtrlRemoveCommand::Undo(wxTextCtrl *text) |
| 2312 | { |
| 2313 | // it is possible that the text was deleted and that we can't restore text |
| 2314 | // at the same position we removed it any more |
| 2315 | wxTextPos posLast = text->GetLastPosition(); |
| 2316 | text->SetInsertionPoint(m_from > posLast ? posLast : m_from); |
| 2317 | text->WriteText(m_textDeleted); |
| 2318 | |
| 2319 | return true; |
| 2320 | } |
| 2321 | |
| 2322 | void wxTextCtrl::Undo() |
| 2323 | { |
| 2324 | // the caller must check it |
| 2325 | wxASSERT_MSG( CanUndo(), _T("can't call Undo() if !CanUndo()") ); |
| 2326 | |
| 2327 | m_cmdProcessor->Undo(); |
| 2328 | } |
| 2329 | |
| 2330 | void wxTextCtrl::Redo() |
| 2331 | { |
| 2332 | // the caller must check it |
| 2333 | wxASSERT_MSG( CanRedo(), _T("can't call Undo() if !CanUndo()") ); |
| 2334 | |
| 2335 | m_cmdProcessor->Redo(); |
| 2336 | } |
| 2337 | |
| 2338 | bool wxTextCtrl::CanUndo() const |
| 2339 | { |
| 2340 | return IsEditable() && m_cmdProcessor->CanUndo(); |
| 2341 | } |
| 2342 | |
| 2343 | bool wxTextCtrl::CanRedo() const |
| 2344 | { |
| 2345 | return IsEditable() && m_cmdProcessor->CanRedo(); |
| 2346 | } |
| 2347 | |
| 2348 | // ---------------------------------------------------------------------------- |
| 2349 | // geometry |
| 2350 | // ---------------------------------------------------------------------------- |
| 2351 | |
| 2352 | wxSize wxTextCtrl::DoGetBestClientSize() const |
| 2353 | { |
| 2354 | // when we're called for the very first time from Create() we must |
| 2355 | // calculate the font metrics here because we can't do it before calling |
| 2356 | // Create() (there is no window yet and wxGTK crashes) but we need them |
| 2357 | // here |
| 2358 | if ( m_heightLine == -1 ) |
| 2359 | { |
| 2360 | wxConstCast(this, wxTextCtrl)->RecalcFontMetrics(); |
| 2361 | } |
| 2362 | |
| 2363 | wxCoord w, h; |
| 2364 | GetTextExtent(GetTextToShow(GetLineText(0)), &w, &h); |
| 2365 | |
| 2366 | int wChar = GetAverageWidth(), |
| 2367 | hChar = GetLineHeight(); |
| 2368 | |
| 2369 | int widthMin = wxMax(10*wChar, 100); |
| 2370 | if ( w < widthMin ) |
| 2371 | w = widthMin; |
| 2372 | if ( h < hChar ) |
| 2373 | h = hChar; |
| 2374 | |
| 2375 | if ( !IsSingleLine() ) |
| 2376 | { |
| 2377 | // let the control have a reasonable number of lines |
| 2378 | int lines = GetNumberOfLines(); |
| 2379 | if ( lines < 5 ) |
| 2380 | lines = 5; |
| 2381 | else if ( lines > 10 ) |
| 2382 | lines = 10; |
| 2383 | h *= lines; |
| 2384 | } |
| 2385 | |
| 2386 | wxRect rectText; |
| 2387 | rectText.width = w; |
| 2388 | rectText.height = h; |
| 2389 | wxRect rectTotal = GetRenderer()->GetTextTotalArea(this, rectText); |
| 2390 | return wxSize(rectTotal.width, rectTotal.height); |
| 2391 | } |
| 2392 | |
| 2393 | void wxTextCtrl::UpdateTextRect() |
| 2394 | { |
| 2395 | wxRect rectTotal(GetClientSize()); |
| 2396 | wxCoord *extraSpace = WrapLines() ? &WData().m_widthMark : NULL; |
| 2397 | m_rectText = GetRenderer()->GetTextClientArea(this, rectTotal, extraSpace); |
| 2398 | |
| 2399 | // code elsewhere is confused by negative rect size |
| 2400 | if ( m_rectText.width <= 0 ) |
| 2401 | m_rectText.width = 1; |
| 2402 | if ( m_rectText.height <= 0 ) |
| 2403 | m_rectText.height = 1; |
| 2404 | |
| 2405 | if ( !IsSingleLine() ) |
| 2406 | { |
| 2407 | // invalidate it so that GetRealTextArea() will recalc it |
| 2408 | MData().m_rectTextReal.width = 0; |
| 2409 | |
| 2410 | // only scroll this rect when the window is scrolled: note that we have |
| 2411 | // to scroll not only the text but the line wrap marks too if we show |
| 2412 | // them |
| 2413 | wxRect rectText = GetRealTextArea(); |
| 2414 | if ( extraSpace && *extraSpace ) |
| 2415 | { |
| 2416 | rectText.width += *extraSpace; |
| 2417 | } |
| 2418 | SetTargetRect(rectText); |
| 2419 | |
| 2420 | // relayout all lines |
| 2421 | if ( WrapLines() ) |
| 2422 | { |
| 2423 | WData().m_rowFirstInvalid = 0; |
| 2424 | |
| 2425 | // increase timestamp: this means that the lines which had been |
| 2426 | // laid out before will be relaid out the next time LayoutLines() |
| 2427 | // is called because their timestamp will be smaller than the |
| 2428 | // current one |
| 2429 | WData().m_timestamp++; |
| 2430 | } |
| 2431 | } |
| 2432 | |
| 2433 | UpdateLastVisible(); |
| 2434 | } |
| 2435 | |
| 2436 | void wxTextCtrl::UpdateLastVisible() |
| 2437 | { |
| 2438 | // this method is only used for horizontal "scrollbarless" scrolling which |
| 2439 | // is used only with single line controls |
| 2440 | if ( !IsSingleLine() ) |
| 2441 | return; |
| 2442 | |
| 2443 | // use (efficient) HitTestLine to find the last visible character |
| 2444 | wxString text = m_value.Mid((size_t)SData().m_colStart /* to the end */); |
| 2445 | wxTextCoord col; |
| 2446 | switch ( HitTestLine(text, m_rectText.width, &col) ) |
| 2447 | { |
| 2448 | case wxTE_HT_BEYOND: |
| 2449 | // everything is visible |
| 2450 | SData().m_ofsHorz = 0; |
| 2451 | |
| 2452 | SData().m_colStart = 0; |
| 2453 | SData().m_colLastVisible = text.length(); |
| 2454 | |
| 2455 | // calculate it below |
| 2456 | SData().m_posLastVisible = -1; |
| 2457 | break; |
| 2458 | |
| 2459 | /* |
| 2460 | case wxTE_HT_BEFORE: |
| 2461 | case wxTE_HT_BELOW: |
| 2462 | */ |
| 2463 | default: |
| 2464 | wxFAIL_MSG(_T("unexpected HitTestLine() return value")); |
| 2465 | // fall through |
| 2466 | |
| 2467 | case wxTE_HT_ON_TEXT: |
| 2468 | if ( col > 0 ) |
| 2469 | { |
| 2470 | // the last entirely seen character is the previous one because |
| 2471 | // this one is only partly visible - unless the width of the |
| 2472 | // string is exactly the max width |
| 2473 | SData().m_posLastVisible = GetTextWidth(text.Truncate(col + 1)); |
| 2474 | if ( SData().m_posLastVisible > m_rectText.width ) |
| 2475 | { |
| 2476 | // this character is not entirely visible, take the |
| 2477 | // previous one |
| 2478 | col--; |
| 2479 | |
| 2480 | // recalc it |
| 2481 | SData().m_posLastVisible = -1; |
| 2482 | } |
| 2483 | //else: we can just see it |
| 2484 | |
| 2485 | SData().m_colLastVisible = col; |
| 2486 | } |
| 2487 | break; |
| 2488 | } |
| 2489 | |
| 2490 | // calculate the width of the text really shown |
| 2491 | if ( SData().m_posLastVisible == -1 ) |
| 2492 | { |
| 2493 | SData().m_posLastVisible = GetTextWidth(text.Truncate(SData().m_colLastVisible + 1)); |
| 2494 | } |
| 2495 | |
| 2496 | // current value is relative the start of the string text which starts at |
| 2497 | // SData().m_colStart, we need an absolute offset into string |
| 2498 | SData().m_colLastVisible += SData().m_colStart; |
| 2499 | |
| 2500 | wxLogTrace(_T("text"), _T("Last visible column/position is %d/%ld"), |
| 2501 | (int) SData().m_colLastVisible, (long) SData().m_posLastVisible); |
| 2502 | } |
| 2503 | |
| 2504 | void wxTextCtrl::OnSize(wxSizeEvent& event) |
| 2505 | { |
| 2506 | UpdateTextRect(); |
| 2507 | |
| 2508 | if ( !IsSingleLine() ) |
| 2509 | { |
| 2510 | #if 0 |
| 2511 | // update them immediately because if we are called for the first time, |
| 2512 | // we need to create them in order for the base class version to |
| 2513 | // position the scrollbars correctly - if we don't do it now, it won't |
| 2514 | // happen at all if we don't get more size events |
| 2515 | UpdateScrollbars(); |
| 2516 | #endif // 0 |
| 2517 | |
| 2518 | MData().m_updateScrollbarX = |
| 2519 | MData().m_updateScrollbarY = true; |
| 2520 | } |
| 2521 | |
| 2522 | event.Skip(); |
| 2523 | } |
| 2524 | |
| 2525 | wxCoord wxTextCtrl::GetTotalWidth() const |
| 2526 | { |
| 2527 | wxCoord w; |
| 2528 | CalcUnscrolledPosition(m_rectText.width, 0, &w, NULL); |
| 2529 | return w; |
| 2530 | } |
| 2531 | |
| 2532 | wxCoord wxTextCtrl::GetTextWidth(const wxString& text) const |
| 2533 | { |
| 2534 | wxCoord w; |
| 2535 | GetTextExtent(GetTextToShow(text), &w, NULL); |
| 2536 | return w; |
| 2537 | } |
| 2538 | |
| 2539 | wxRect wxTextCtrl::GetRealTextArea() const |
| 2540 | { |
| 2541 | // for single line text control it's just the same as text rect |
| 2542 | if ( IsSingleLine() ) |
| 2543 | return m_rectText; |
| 2544 | |
| 2545 | // the real text area always holds an entire number of lines, so the only |
| 2546 | // difference with the text area is a narrow strip along the bottom border |
| 2547 | wxRect rectText = MData().m_rectTextReal; |
| 2548 | if ( !rectText.width ) |
| 2549 | { |
| 2550 | // recalculate it |
| 2551 | rectText = m_rectText; |
| 2552 | |
| 2553 | // when we're called for the very first time, the line height might not |
| 2554 | // had been calculated yet, so do get it now |
| 2555 | wxTextCtrl *self = wxConstCast(this, wxTextCtrl); |
| 2556 | self->RecalcFontMetrics(); |
| 2557 | |
| 2558 | int hLine = GetLineHeight(); |
| 2559 | rectText.height = (m_rectText.height / hLine) * hLine; |
| 2560 | |
| 2561 | // cache the result |
| 2562 | self->MData().m_rectTextReal = rectText; |
| 2563 | } |
| 2564 | |
| 2565 | return rectText; |
| 2566 | } |
| 2567 | |
| 2568 | wxTextCoord wxTextCtrl::GetRowInLine(wxTextCoord line, |
| 2569 | wxTextCoord col, |
| 2570 | wxTextCoord *colRowStart) const |
| 2571 | { |
| 2572 | wxASSERT_MSG( WrapLines(), _T("shouldn't be called") ); |
| 2573 | |
| 2574 | const wxWrappedLineData& lineData = WData().m_linesData[line]; |
| 2575 | |
| 2576 | if ( !WData().IsValidLine(line) ) |
| 2577 | LayoutLines(line); |
| 2578 | |
| 2579 | // row is here counted a bit specially: 0 is the 2nd row of the line (1st |
| 2580 | // extra row) |
| 2581 | size_t row = 0, |
| 2582 | rowMax = lineData.GetExtraRowCount(); |
| 2583 | if ( rowMax ) |
| 2584 | { |
| 2585 | row = 0; |
| 2586 | while ( (row < rowMax) && (col >= lineData.GetExtraRowStart(row)) ) |
| 2587 | row++; |
| 2588 | |
| 2589 | // it's ok here that row is 1 greater than needed: like this, it is |
| 2590 | // counted as a normal (and not extra) row |
| 2591 | } |
| 2592 | //else: only one row anyhow |
| 2593 | |
| 2594 | if ( colRowStart ) |
| 2595 | { |
| 2596 | // +1 because we need a real row number, not the extra row one |
| 2597 | *colRowStart = lineData.GetRowStart(row); |
| 2598 | |
| 2599 | // this can't happen, of course |
| 2600 | wxASSERT_MSG( *colRowStart <= col, _T("GetRowInLine() is broken") ); |
| 2601 | } |
| 2602 | |
| 2603 | return row; |
| 2604 | } |
| 2605 | |
| 2606 | void wxTextCtrl::LayoutLine(wxTextCoord line, wxWrappedLineData& lineData) const |
| 2607 | { |
| 2608 | // FIXME: this uses old GetPartOfWrappedLine() which is not used anywhere |
| 2609 | // else now and has rather awkward interface for our needs here |
| 2610 | |
| 2611 | lineData.m_rowsStart.Empty(); |
| 2612 | lineData.m_rowsWidth.Empty(); |
| 2613 | |
| 2614 | const wxString& text = GetLineText(line); |
| 2615 | wxCoord widthRow; |
| 2616 | size_t colRowStart = 0; |
| 2617 | do |
| 2618 | { |
| 2619 | size_t lenRow = GetPartOfWrappedLine |
| 2620 | ( |
| 2621 | text.c_str() + colRowStart, |
| 2622 | &widthRow |
| 2623 | ); |
| 2624 | |
| 2625 | // remember the start of this row (not for the first one as |
| 2626 | // it's always 0) and its width |
| 2627 | if ( colRowStart ) |
| 2628 | lineData.m_rowsStart.Add(colRowStart); |
| 2629 | lineData.m_rowsWidth.Add(widthRow); |
| 2630 | |
| 2631 | colRowStart += lenRow; |
| 2632 | } |
| 2633 | while ( colRowStart < text.length() ); |
| 2634 | |
| 2635 | // put the current timestamp on it |
| 2636 | lineData.m_timestamp = WData().m_timestamp; |
| 2637 | } |
| 2638 | |
| 2639 | void wxTextCtrl::LayoutLines(wxTextCoord lineLast) const |
| 2640 | { |
| 2641 | wxASSERT_MSG( WrapLines(), _T("should only be used for line wrapping") ); |
| 2642 | |
| 2643 | // if we were called, some line was dirty and if it was dirty we must have |
| 2644 | // had m_rowFirstInvalid set to something too |
| 2645 | wxTextCoord lineFirst = WData().m_rowFirstInvalid; |
| 2646 | wxASSERT_MSG( lineFirst != -1, _T("nothing to layout?") ); |
| 2647 | |
| 2648 | wxTextCoord rowFirst, rowCur; |
| 2649 | if ( lineFirst ) |
| 2650 | { |
| 2651 | // start after the last known valid line |
| 2652 | const wxWrappedLineData& lineData = WData().m_linesData[lineFirst - 1]; |
| 2653 | rowFirst = lineData.GetFirstRow() + lineData.GetRowCount(); |
| 2654 | } |
| 2655 | else // no valid lines, start at row 0 |
| 2656 | { |
| 2657 | rowFirst = 0; |
| 2658 | } |
| 2659 | |
| 2660 | rowCur = rowFirst; |
| 2661 | for ( wxTextCoord line = lineFirst; line <= lineLast; line++ ) |
| 2662 | { |
| 2663 | // set the starting row for this line |
| 2664 | wxWrappedLineData& lineData = WData().m_linesData[line]; |
| 2665 | lineData.m_rowFirst = rowCur; |
| 2666 | |
| 2667 | // had the line been already broken into rows? |
| 2668 | // |
| 2669 | // if so, compare its timestamp with the current one: if nothing has |
| 2670 | // been changed, don't relayout it |
| 2671 | if ( !lineData.IsValid() || |
| 2672 | (lineData.m_timestamp < WData().m_timestamp) ) |
| 2673 | { |
| 2674 | // now do break it in rows |
| 2675 | LayoutLine(line, lineData); |
| 2676 | } |
| 2677 | |
| 2678 | rowCur += lineData.GetRowCount(); |
| 2679 | } |
| 2680 | |
| 2681 | // we are now valid at least up to this line, but if it is the last one we |
| 2682 | // just don't have any more invalid rows at all |
| 2683 | if ( (size_t)lineLast == WData().m_linesData.GetCount() -1 ) |
| 2684 | { |
| 2685 | lineLast = -1; |
| 2686 | } |
| 2687 | |
| 2688 | wxTextCtrl *self = wxConstCast(this, wxTextCtrl); |
| 2689 | self->WData().m_rowFirstInvalid = lineLast; |
| 2690 | |
| 2691 | // also refresh the line end indicators (FIXME shouldn't do it always!) |
| 2692 | self->RefreshLineWrapMarks(rowFirst, rowCur); |
| 2693 | } |
| 2694 | |
| 2695 | size_t wxTextCtrl::GetPartOfWrappedLine(const wxChar* text, |
| 2696 | wxCoord *widthReal) const |
| 2697 | { |
| 2698 | // this function is slow, it shouldn't be called unless really needed |
| 2699 | wxASSERT_MSG( WrapLines(), _T("shouldn't be called") ); |
| 2700 | |
| 2701 | wxString s(text); |
| 2702 | wxTextCoord col; |
| 2703 | wxCoord wReal = wxDefaultCoord; |
| 2704 | switch ( HitTestLine(s, m_rectText.width, &col) ) |
| 2705 | { |
| 2706 | /* |
| 2707 | case wxTE_HT_BEFORE: |
| 2708 | case wxTE_HT_BELOW: |
| 2709 | */ |
| 2710 | default: |
| 2711 | wxFAIL_MSG(_T("unexpected HitTestLine() return value")); |
| 2712 | // fall through |
| 2713 | |
| 2714 | case wxTE_HT_ON_TEXT: |
| 2715 | if ( col > 0 ) |
| 2716 | { |
| 2717 | // the last entirely seen character is the previous one because |
| 2718 | // this one is only partly visible - unless the width of the |
| 2719 | // string is exactly the max width |
| 2720 | wReal = GetTextWidth(s.Truncate(col + 1)); |
| 2721 | if ( wReal > m_rectText.width ) |
| 2722 | { |
| 2723 | // this character is not entirely visible, take the |
| 2724 | // previous one |
| 2725 | col--; |
| 2726 | |
| 2727 | // recalc the width |
| 2728 | wReal = wxDefaultCoord; |
| 2729 | } |
| 2730 | //else: we can just see it |
| 2731 | |
| 2732 | // wrap at any character or only at words boundaries? |
| 2733 | if ( !(GetWindowStyle() & wxTE_CHARWRAP) ) |
| 2734 | { |
| 2735 | // find the (last) not word char before this word |
| 2736 | wxTextCoord colWordStart; |
| 2737 | for ( colWordStart = col; |
| 2738 | colWordStart && IsWordChar(s[(size_t)colWordStart]); |
| 2739 | colWordStart-- ) |
| 2740 | ; |
| 2741 | |
| 2742 | if ( colWordStart > 0 ) |
| 2743 | { |
| 2744 | if ( colWordStart != col ) |
| 2745 | { |
| 2746 | // will have to recalc the real width |
| 2747 | wReal = wxDefaultCoord; |
| 2748 | |
| 2749 | col = colWordStart; |
| 2750 | } |
| 2751 | } |
| 2752 | //else: only a single word, have to wrap it here |
| 2753 | } |
| 2754 | } |
| 2755 | break; |
| 2756 | |
| 2757 | case wxTE_HT_BEYOND: |
| 2758 | break; |
| 2759 | } |
| 2760 | |
| 2761 | // we return the number of characters, not the index of the last one |
| 2762 | if ( (size_t)col < s.length() ) |
| 2763 | { |
| 2764 | // but don't return more than this (empty) string has |
| 2765 | col++; |
| 2766 | } |
| 2767 | |
| 2768 | if ( widthReal ) |
| 2769 | { |
| 2770 | if ( wReal == wxDefaultCoord ) |
| 2771 | { |
| 2772 | // calc it if not done yet |
| 2773 | wReal = GetTextWidth(s.Truncate(col)); |
| 2774 | } |
| 2775 | |
| 2776 | *widthReal = wReal; |
| 2777 | } |
| 2778 | |
| 2779 | // VZ: old, horribly inefficient code which can still be used for checking |
| 2780 | // the result (in line, not word, wrap mode only) - to be removed later |
| 2781 | #if 0 |
| 2782 | wxTextCtrl *self = wxConstCast(this, wxTextCtrl); |
| 2783 | wxClientDC dc(self); |
| 2784 | dc.SetFont(GetFont()); |
| 2785 | self->DoPrepareDC(dc); |
| 2786 | |
| 2787 | wxCoord widthMax = m_rectText.width; |
| 2788 | |
| 2789 | // the text which we can keep in this ROW |
| 2790 | wxString str; |
| 2791 | wxCoord w, wOld; |
| 2792 | for ( wOld = w = 0; *text && (w <= widthMax); ) |
| 2793 | { |
| 2794 | wOld = w; |
| 2795 | str += *text++; |
| 2796 | dc.GetTextExtent(str, &w, NULL); |
| 2797 | } |
| 2798 | |
| 2799 | if ( w > widthMax ) |
| 2800 | { |
| 2801 | // if we wrapped, the last letter was one too much |
| 2802 | if ( str.length() > 1 ) |
| 2803 | { |
| 2804 | // remove it |
| 2805 | str.erase(str.length() - 1, 1); |
| 2806 | } |
| 2807 | else // but always keep at least one letter in each row |
| 2808 | { |
| 2809 | // the real width then is the last value of w and not teh one |
| 2810 | // before last |
| 2811 | wOld = w; |
| 2812 | } |
| 2813 | } |
| 2814 | else // we didn't wrap |
| 2815 | { |
| 2816 | wOld = w; |
| 2817 | } |
| 2818 | |
| 2819 | wxASSERT( col == str.length() ); |
| 2820 | |
| 2821 | if ( widthReal ) |
| 2822 | { |
| 2823 | wxASSERT( *widthReal == wOld ); |
| 2824 | |
| 2825 | *widthReal = wOld; |
| 2826 | } |
| 2827 | |
| 2828 | //return str.length(); |
| 2829 | #endif |
| 2830 | |
| 2831 | return col; |
| 2832 | } |
| 2833 | |
| 2834 | // OPT: this function is called a lot - would be nice to optimize it but I |
| 2835 | // don't really know how yet |
| 2836 | wxTextCtrlHitTestResult wxTextCtrl::HitTestLine(const wxString& line, |
| 2837 | wxCoord x, |
| 2838 | wxTextCoord *colOut) const |
| 2839 | { |
| 2840 | wxTextCtrlHitTestResult res = wxTE_HT_ON_TEXT; |
| 2841 | |
| 2842 | int col; |
| 2843 | wxTextCtrl *self = wxConstCast(this, wxTextCtrl); |
| 2844 | wxClientDC dc(self); |
| 2845 | dc.SetFont(GetFont()); |
| 2846 | self->DoPrepareDC(dc); |
| 2847 | |
| 2848 | wxCoord width; |
| 2849 | dc.GetTextExtent(line, &width, NULL); |
| 2850 | if ( x >= width ) |
| 2851 | { |
| 2852 | // clicking beyond the end of line is equivalent to clicking at |
| 2853 | // the end of it, so return the last line column |
| 2854 | col = line.length(); |
| 2855 | if ( col ) |
| 2856 | { |
| 2857 | // unless the line is empty and so doesn't have any column at all - |
| 2858 | // in this case return 0, what else can we do? |
| 2859 | col--; |
| 2860 | } |
| 2861 | |
| 2862 | res = wxTE_HT_BEYOND; |
| 2863 | } |
| 2864 | else if ( x < 0 ) |
| 2865 | { |
| 2866 | col = 0; |
| 2867 | |
| 2868 | res = wxTE_HT_BEFORE; |
| 2869 | } |
| 2870 | else // we're inside the line |
| 2871 | { |
| 2872 | // now calculate the column: first, approximate it with fixed-width |
| 2873 | // value and then calculate the correct value iteratively: note that |
| 2874 | // we use the first character of the line instead of (average) |
| 2875 | // GetCharWidth(): it is common to have lines of dashes, for example, |
| 2876 | // and this should give us much better approximation in such case |
| 2877 | // |
| 2878 | // OPT: maybe using (cache) m_widthAvg would be still faster? profile! |
| 2879 | dc.GetTextExtent(line[0], &width, NULL); |
| 2880 | |
| 2881 | col = x / width; |
| 2882 | if ( col < 0 ) |
| 2883 | { |
| 2884 | col = 0; |
| 2885 | } |
| 2886 | else if ( (size_t)col > line.length() ) |
| 2887 | { |
| 2888 | col = line.length(); |
| 2889 | } |
| 2890 | |
| 2891 | // matchDir is the direction in which we should move to reach the |
| 2892 | // character containing the given position |
| 2893 | enum |
| 2894 | { |
| 2895 | Match_Left = -1, |
| 2896 | Match_None = 0, |
| 2897 | Match_Right = 1 |
| 2898 | } matchDir = Match_None; |
| 2899 | for ( ;; ) |
| 2900 | { |
| 2901 | // check that we didn't go beyond the line boundary |
| 2902 | if ( col < 0 ) |
| 2903 | { |
| 2904 | col = 0; |
| 2905 | break; |
| 2906 | } |
| 2907 | if ( (size_t)col > line.length() ) |
| 2908 | { |
| 2909 | col = line.length(); |
| 2910 | break; |
| 2911 | } |
| 2912 | |
| 2913 | wxString strBefore(line, (size_t)col); |
| 2914 | dc.GetTextExtent(strBefore, &width, NULL); |
| 2915 | if ( width > x ) |
| 2916 | { |
| 2917 | if ( matchDir == Match_Right ) |
| 2918 | { |
| 2919 | // we were going to the right and, finally, moved beyond |
| 2920 | // the original position - stop on the previous one |
| 2921 | col--; |
| 2922 | |
| 2923 | break; |
| 2924 | } |
| 2925 | |
| 2926 | if ( matchDir == Match_None ) |
| 2927 | { |
| 2928 | // we just started iterating, now we know that we should |
| 2929 | // move to the left |
| 2930 | matchDir = Match_Left; |
| 2931 | } |
| 2932 | //else: we are still to the right of the target, continue |
| 2933 | } |
| 2934 | else // width < x |
| 2935 | { |
| 2936 | // invert the logic above |
| 2937 | if ( matchDir == Match_Left ) |
| 2938 | { |
| 2939 | // with the exception that we don't need to backtrack here |
| 2940 | break; |
| 2941 | } |
| 2942 | |
| 2943 | if ( matchDir == Match_None ) |
| 2944 | { |
| 2945 | // go to the right |
| 2946 | matchDir = Match_Right; |
| 2947 | } |
| 2948 | } |
| 2949 | |
| 2950 | // this is not supposed to happen |
| 2951 | wxASSERT_MSG( matchDir, _T("logic error in wxTextCtrl::HitTest") ); |
| 2952 | |
| 2953 | if ( matchDir == Match_Right ) |
| 2954 | col++; |
| 2955 | else |
| 2956 | col--; |
| 2957 | } |
| 2958 | } |
| 2959 | |
| 2960 | // check that we calculated it correctly |
| 2961 | #ifdef WXDEBUG_TEXT |
| 2962 | if ( res == wxTE_HT_ON_TEXT ) |
| 2963 | { |
| 2964 | wxCoord width1; |
| 2965 | wxString text = line.Left(col); |
| 2966 | dc.GetTextExtent(text, &width1, NULL); |
| 2967 | if ( (size_t)col < line.length() ) |
| 2968 | { |
| 2969 | wxCoord width2; |
| 2970 | |
| 2971 | text += line[col]; |
| 2972 | dc.GetTextExtent(text, &width2, NULL); |
| 2973 | |
| 2974 | wxASSERT_MSG( (width1 <= x) && (x < width2), |
| 2975 | _T("incorrect HitTestLine() result") ); |
| 2976 | } |
| 2977 | else // we return last char |
| 2978 | { |
| 2979 | wxASSERT_MSG( x >= width1, _T("incorrect HitTestLine() result") ); |
| 2980 | } |
| 2981 | } |
| 2982 | #endif // WXDEBUG_TEXT |
| 2983 | |
| 2984 | if ( colOut ) |
| 2985 | *colOut = col; |
| 2986 | |
| 2987 | return res; |
| 2988 | } |
| 2989 | |
| 2990 | wxTextCtrlHitTestResult wxTextCtrl::HitTest(const wxPoint& pt, long *pos) const |
| 2991 | { |
| 2992 | wxTextCoord x, y; |
| 2993 | wxTextCtrlHitTestResult rc = HitTest(pt, &x, &y); |
| 2994 | if ( rc != wxTE_HT_UNKNOWN && pos ) |
| 2995 | { |
| 2996 | *pos = XYToPosition(x, y); |
| 2997 | } |
| 2998 | |
| 2999 | return rc; |
| 3000 | } |
| 3001 | |
| 3002 | wxTextCtrlHitTestResult wxTextCtrl::HitTest(const wxPoint& pos, |
| 3003 | wxTextCoord *colOut, |
| 3004 | wxTextCoord *rowOut) const |
| 3005 | { |
| 3006 | return HitTest2(pos.y, pos.x, 0, rowOut, colOut, NULL, NULL); |
| 3007 | } |
| 3008 | |
| 3009 | wxTextCtrlHitTestResult wxTextCtrl::HitTestLogical(const wxPoint& pos, |
| 3010 | wxTextCoord *colOut, |
| 3011 | wxTextCoord *rowOut) const |
| 3012 | { |
| 3013 | return HitTest2(pos.y, pos.x, 0, rowOut, colOut, NULL, NULL, false); |
| 3014 | } |
| 3015 | |
| 3016 | wxTextCtrlHitTestResult wxTextCtrl::HitTest2(wxCoord y0, |
| 3017 | wxCoord x10, |
| 3018 | wxCoord x20, |
| 3019 | wxTextCoord *rowOut, |
| 3020 | wxTextCoord *colStart, |
| 3021 | wxTextCoord *colEnd, |
| 3022 | wxTextCoord *colRowStartOut, |
| 3023 | bool deviceCoords) const |
| 3024 | { |
| 3025 | // is the point in the text area or to the right or below it? |
| 3026 | wxTextCtrlHitTestResult res = wxTE_HT_ON_TEXT; |
| 3027 | |
| 3028 | // translate the window coords x0 and y0 into the client coords in the text |
| 3029 | // area by adjusting for both the client and text area offsets (unless this |
| 3030 | // was already done) |
| 3031 | int x1, y; |
| 3032 | if ( deviceCoords ) |
| 3033 | { |
| 3034 | wxPoint pt = GetClientAreaOrigin() + m_rectText.GetPosition(); |
| 3035 | CalcUnscrolledPosition(x10 - pt.x, y0 - pt.y, &x1, &y); |
| 3036 | } |
| 3037 | else |
| 3038 | { |
| 3039 | y = y0; |
| 3040 | x1 = x10; |
| 3041 | } |
| 3042 | |
| 3043 | // calculate the row (it is really a LINE, not a ROW) |
| 3044 | wxTextCoord row; |
| 3045 | |
| 3046 | // these vars are used only for WrapLines() case |
| 3047 | wxTextCoord colRowStart = 0; |
| 3048 | size_t rowLen = 0; |
| 3049 | |
| 3050 | if ( colRowStartOut ) |
| 3051 | *colRowStartOut = 0; |
| 3052 | |
| 3053 | int hLine = GetLineHeight(); |
| 3054 | if ( y < 0 ) |
| 3055 | { |
| 3056 | // and clicking before it is the same as clicking on the first one |
| 3057 | row = 0; |
| 3058 | |
| 3059 | res = wxTE_HT_BEFORE; |
| 3060 | } |
| 3061 | else // y >= 0 |
| 3062 | { |
| 3063 | wxTextCoord rowLast = GetNumberOfLines() - 1; |
| 3064 | row = y / hLine; |
| 3065 | if ( IsSingleLine() || !WrapLines() ) |
| 3066 | { |
| 3067 | // in this case row calculation is simple as all lines have the |
| 3068 | // same height and so row is the same as line |
| 3069 | if ( row > rowLast ) |
| 3070 | { |
| 3071 | // clicking below the text is the same as clicking on the last |
| 3072 | // line |
| 3073 | row = rowLast; |
| 3074 | |
| 3075 | res = wxTE_HT_BELOW; |
| 3076 | } |
| 3077 | } |
| 3078 | else // multline control with line wrap |
| 3079 | { |
| 3080 | // use binary search to find the line containing this row |
| 3081 | const wxArrayWrappedLinesData& linesData = WData().m_linesData; |
| 3082 | size_t lo = 0, |
| 3083 | hi = linesData.GetCount(), |
| 3084 | cur; |
| 3085 | while ( lo < hi ) |
| 3086 | { |
| 3087 | cur = (lo + hi)/2; |
| 3088 | const wxWrappedLineData& lineData = linesData[cur]; |
| 3089 | if ( !WData().IsValidLine(cur) ) |
| 3090 | LayoutLines(cur); |
| 3091 | wxTextCoord rowFirst = lineData.GetFirstRow(); |
| 3092 | |
| 3093 | if ( row < rowFirst ) |
| 3094 | { |
| 3095 | hi = cur; |
| 3096 | } |
| 3097 | else |
| 3098 | { |
| 3099 | // our row is after the first row of the cur line: |
| 3100 | // obviously, if cur is the last line, it contains this |
| 3101 | // row, otherwise we have to test that it is before the |
| 3102 | // first row of the next line |
| 3103 | bool found = cur == linesData.GetCount() - 1; |
| 3104 | if ( found ) |
| 3105 | { |
| 3106 | // if the row is beyond the end of text, adjust it to |
| 3107 | // be the last one and set res accordingly |
| 3108 | if ( (size_t)(row - rowFirst) >= lineData.GetRowCount() ) |
| 3109 | { |
| 3110 | res = wxTE_HT_BELOW; |
| 3111 | |
| 3112 | row = lineData.GetRowCount() + rowFirst - 1; |
| 3113 | } |
| 3114 | } |
| 3115 | else // not the last row |
| 3116 | { |
| 3117 | const wxWrappedLineData& |
| 3118 | lineNextData = linesData[cur + 1]; |
| 3119 | if ( !WData().IsValidLine(cur + 1) ) |
| 3120 | LayoutLines(cur + 1); |
| 3121 | found = row < lineNextData.GetFirstRow(); |
| 3122 | } |
| 3123 | |
| 3124 | if ( found ) |
| 3125 | { |
| 3126 | colRowStart = lineData.GetRowStart(row - rowFirst); |
| 3127 | rowLen = lineData.GetRowLength(row - rowFirst, |
| 3128 | GetLines()[cur].length()); |
| 3129 | row = cur; |
| 3130 | |
| 3131 | break; |
| 3132 | } |
| 3133 | else |
| 3134 | { |
| 3135 | lo = cur; |
| 3136 | } |
| 3137 | } |
| 3138 | } |
| 3139 | } |
| 3140 | } |
| 3141 | |
| 3142 | if ( res == wxTE_HT_ON_TEXT ) |
| 3143 | { |
| 3144 | // now find the position in the line |
| 3145 | wxString lineText = GetLineText(row), |
| 3146 | rowText; |
| 3147 | |
| 3148 | if ( colRowStart || rowLen ) |
| 3149 | { |
| 3150 | // look in this row only, not in whole line |
| 3151 | rowText = lineText.Mid(colRowStart, rowLen); |
| 3152 | } |
| 3153 | else |
| 3154 | { |
| 3155 | // just take the whole string |
| 3156 | rowText = lineText; |
| 3157 | } |
| 3158 | |
| 3159 | if ( colStart ) |
| 3160 | { |
| 3161 | res = HitTestLine(GetTextToShow(rowText), x1, colStart); |
| 3162 | |
| 3163 | if ( colRowStart ) |
| 3164 | { |
| 3165 | if ( colRowStartOut ) |
| 3166 | { |
| 3167 | // give them the column offset in this ROW in pixels |
| 3168 | *colRowStartOut = colRowStart; |
| 3169 | } |
| 3170 | |
| 3171 | // take into account that the ROW doesn't start in the |
| 3172 | // beginning of the LINE |
| 3173 | *colStart += colRowStart; |
| 3174 | } |
| 3175 | |
| 3176 | if ( colEnd ) |
| 3177 | { |
| 3178 | // the hit test result we return is for x1, so throw out |
| 3179 | // the result for x2 here |
| 3180 | int x2 = x1 + x20 - x10; |
| 3181 | (void)HitTestLine(GetTextToShow(rowText), x2, colEnd); |
| 3182 | |
| 3183 | *colEnd += colRowStart; |
| 3184 | } |
| 3185 | } |
| 3186 | } |
| 3187 | else // before/after vertical text span |
| 3188 | { |
| 3189 | if ( colStart ) |
| 3190 | { |
| 3191 | // fill the column with the first/last position in the |
| 3192 | // corresponding line |
| 3193 | if ( res == wxTE_HT_BEFORE ) |
| 3194 | *colStart = 0; |
| 3195 | else // res == wxTE_HT_BELOW |
| 3196 | *colStart = GetLineText(GetNumberOfLines() - 1).length(); |
| 3197 | } |
| 3198 | } |
| 3199 | |
| 3200 | if ( rowOut ) |
| 3201 | { |
| 3202 | // give them the row in text coords (as is) |
| 3203 | *rowOut = row; |
| 3204 | } |
| 3205 | |
| 3206 | return res; |
| 3207 | } |
| 3208 | |
| 3209 | bool wxTextCtrl::GetLineAndRow(wxTextCoord row, |
| 3210 | wxTextCoord *lineOut, |
| 3211 | wxTextCoord *rowInLineOut) const |
| 3212 | { |
| 3213 | wxTextCoord line, |
| 3214 | rowInLine = 0; |
| 3215 | |
| 3216 | if ( row < 0 ) |
| 3217 | return false; |
| 3218 | |
| 3219 | int nLines = GetNumberOfLines(); |
| 3220 | if ( WrapLines() ) |
| 3221 | { |
| 3222 | const wxArrayWrappedLinesData& linesData = WData().m_linesData; |
| 3223 | for ( line = 0; line < nLines; line++ ) |
| 3224 | { |
| 3225 | if ( !WData().IsValidLine(line) ) |
| 3226 | LayoutLines(line); |
| 3227 | |
| 3228 | if ( row < linesData[line].GetNextRow() ) |
| 3229 | { |
| 3230 | // we found the right line |
| 3231 | rowInLine = row - linesData[line].GetFirstRow(); |
| 3232 | |
| 3233 | break; |
| 3234 | } |
| 3235 | } |
| 3236 | |
| 3237 | if ( line == nLines ) |
| 3238 | { |
| 3239 | // the row is out of range |
| 3240 | return false; |
| 3241 | } |
| 3242 | } |
| 3243 | else // no line wrapping, everything is easy |
| 3244 | { |
| 3245 | if ( row >= nLines ) |
| 3246 | return false; |
| 3247 | |
| 3248 | line = row; |
| 3249 | } |
| 3250 | |
| 3251 | if ( lineOut ) |
| 3252 | *lineOut = line; |
| 3253 | if ( rowInLineOut ) |
| 3254 | *rowInLineOut = rowInLine; |
| 3255 | |
| 3256 | return true; |
| 3257 | } |
| 3258 | |
| 3259 | // ---------------------------------------------------------------------------- |
| 3260 | // scrolling |
| 3261 | // ---------------------------------------------------------------------------- |
| 3262 | |
| 3263 | /* |
| 3264 | wxTextCtrl has not one but two scrolling mechanisms: one is semi-automatic |
| 3265 | scrolling in both horizontal and vertical direction implemented using |
| 3266 | wxScrollHelper and the second one is manual scrolling implemented using |
| 3267 | SData().m_ofsHorz and used by the single line controls without scroll bar. |
| 3268 | |
| 3269 | The first version (the standard one) always scrolls by fixed amount which is |
| 3270 | fine for vertical scrolling as all lines have the same height but is rather |
| 3271 | ugly for horizontal scrolling if proportional font is used. This is why we |
| 3272 | manually update and use SData().m_ofsHorz which contains the length of the string |
| 3273 | which is hidden beyond the left border. An important property of text |
| 3274 | controls using this kind of scrolling is that an entire number of characters |
| 3275 | is always shown and that parts of characters never appear on display - |
| 3276 | neither in the leftmost nor rightmost positions. |
| 3277 | |
| 3278 | Once again, for multi line controls SData().m_ofsHorz is always 0 and scrolling is |
| 3279 | done as usual for wxScrollWindow. |
| 3280 | */ |
| 3281 | |
| 3282 | void wxTextCtrl::ShowHorzPosition(wxCoord pos) |
| 3283 | { |
| 3284 | wxASSERT_MSG( IsSingleLine(), _T("doesn't work for multiline") ); |
| 3285 | |
| 3286 | // pos is the logical position to show |
| 3287 | |
| 3288 | // SData().m_ofsHorz is the first logical position shown |
| 3289 | if ( pos < SData().m_ofsHorz ) |
| 3290 | { |
| 3291 | // scroll backwards |
| 3292 | wxTextCoord col; |
| 3293 | HitTestLine(m_value, pos, &col); |
| 3294 | ScrollText(col); |
| 3295 | } |
| 3296 | else |
| 3297 | { |
| 3298 | wxCoord width = m_rectText.width; |
| 3299 | if ( !width ) |
| 3300 | { |
| 3301 | // if we are called from the ctor, m_rectText is not initialized |
| 3302 | // yet, so do it now |
| 3303 | UpdateTextRect(); |
| 3304 | width = m_rectText.width; |
| 3305 | } |
| 3306 | |
| 3307 | // SData().m_ofsHorz + width is the last logical position shown |
| 3308 | if ( pos > SData().m_ofsHorz + width) |
| 3309 | { |
| 3310 | // scroll forward |
| 3311 | wxTextCoord col; |
| 3312 | HitTestLine(m_value, pos - width, &col); |
| 3313 | ScrollText(col + 1); |
| 3314 | } |
| 3315 | } |
| 3316 | } |
| 3317 | |
| 3318 | // scroll the window horizontally so that the first visible character becomes |
| 3319 | // the one at this position |
| 3320 | void wxTextCtrl::ScrollText(wxTextCoord col) |
| 3321 | { |
| 3322 | wxASSERT_MSG( IsSingleLine(), |
| 3323 | _T("ScrollText() is for single line controls only") ); |
| 3324 | |
| 3325 | // never scroll beyond the left border |
| 3326 | if ( col < 0 ) |
| 3327 | col = 0; |
| 3328 | |
| 3329 | // OPT: could only get the extent of the part of the string between col |
| 3330 | // and SData().m_colStart |
| 3331 | wxCoord ofsHorz = GetTextWidth(GetLineText(0).Left(col)); |
| 3332 | |
| 3333 | if ( ofsHorz != SData().m_ofsHorz ) |
| 3334 | { |
| 3335 | // remember the last currently used pixel |
| 3336 | int posLastVisible = SData().m_posLastVisible; |
| 3337 | if ( posLastVisible == -1 ) |
| 3338 | { |
| 3339 | // this may happen when we're called very early, during the |
| 3340 | // controls construction |
| 3341 | UpdateLastVisible(); |
| 3342 | |
| 3343 | posLastVisible = SData().m_posLastVisible; |
| 3344 | } |
| 3345 | |
| 3346 | // NB1: to scroll to the right, offset must be negative, hence the |
| 3347 | // order of operands |
| 3348 | int dx = SData().m_ofsHorz - ofsHorz; |
| 3349 | |
| 3350 | // NB2: we call Refresh() below which results in a call to |
| 3351 | // DoDraw(), so we must update SData().m_ofsHorz before calling it |
| 3352 | SData().m_ofsHorz = ofsHorz; |
| 3353 | SData().m_colStart = col; |
| 3354 | |
| 3355 | // after changing m_colStart, recalc the last visible position: we need |
| 3356 | // to recalc the last visible position beore scrolling in order to make |
| 3357 | // it appear exactly at the right edge of the text area after scrolling |
| 3358 | UpdateLastVisible(); |
| 3359 | |
| 3360 | #if 0 // do we? |
| 3361 | if ( dx < 0 ) |
| 3362 | { |
| 3363 | // we want to force the update of it after scrolling |
| 3364 | SData().m_colLastVisible = -1; |
| 3365 | } |
| 3366 | #endif |
| 3367 | |
| 3368 | // scroll only the rectangle inside which there is the text |
| 3369 | wxRect rect = m_rectText; |
| 3370 | rect.width = posLastVisible; |
| 3371 | |
| 3372 | rect = ScrollNoRefresh(dx, 0, &rect); |
| 3373 | |
| 3374 | /* |
| 3375 | we need to manually refresh the part which ScrollWindow() doesn't |
| 3376 | refresh (with new API this means the part outside the rect returned |
| 3377 | by ScrollNoRefresh): indeed, if we had this: |
| 3378 | |
| 3379 | ********o |
| 3380 | |
| 3381 | where '*' is text and 'o' is blank area at the end (too small to |
| 3382 | hold the next char) then after scrolling by 2 positions to the left |
| 3383 | we're going to have |
| 3384 | |
| 3385 | ******RRo |
| 3386 | |
| 3387 | where 'R' is the area refreshed by ScrollWindow() - but we still |
| 3388 | need to refresh the 'o' at the end as it may be now big enough to |
| 3389 | hold the new character shifted into view. |
| 3390 | |
| 3391 | when we are scrolling to the right, we need to update this rect as |
| 3392 | well because it might have contained something before but doesn't |
| 3393 | contain anything any more |
| 3394 | */ |
| 3395 | |
| 3396 | // we can combine both rectangles into one when scrolling to the left, |
| 3397 | // but we need two separate Refreshes() otherwise |
| 3398 | if ( dx > 0 ) |
| 3399 | { |
| 3400 | // refresh the uncovered part on the left |
| 3401 | Refresh(true, &rect); |
| 3402 | |
| 3403 | // and now the area on the right |
| 3404 | rect.x = m_rectText.x + posLastVisible; |
| 3405 | rect.width = m_rectText.width - posLastVisible; |
| 3406 | } |
| 3407 | else // scrolling to the left |
| 3408 | { |
| 3409 | // just extend the rect covering the uncovered area to the edge of |
| 3410 | // the text rect |
| 3411 | rect.width += m_rectText.width - posLastVisible; |
| 3412 | } |
| 3413 | |
| 3414 | Refresh(true, &rect); |
| 3415 | |
| 3416 | // I don't know exactly why is this needed here but without it we may |
| 3417 | // scroll the window again (from the same method) before the previously |
| 3418 | // invalidated area is repainted when typing *very* quickly - and this |
| 3419 | // may lead to the display corruption |
| 3420 | Update(); |
| 3421 | } |
| 3422 | } |
| 3423 | |
| 3424 | void wxTextCtrl::CalcUnscrolledPosition(int x, int y, int *xx, int *yy) const |
| 3425 | { |
| 3426 | if ( IsSingleLine() ) |
| 3427 | { |
| 3428 | // we don't use wxScrollHelper |
| 3429 | if ( xx ) |
| 3430 | *xx = x + SData().m_ofsHorz; |
| 3431 | if ( yy ) |
| 3432 | *yy = y; |
| 3433 | } |
| 3434 | else |
| 3435 | { |
| 3436 | // let the base class do it |
| 3437 | wxScrollHelper::CalcUnscrolledPosition(x, y, xx, yy); |
| 3438 | } |
| 3439 | } |
| 3440 | |
| 3441 | void wxTextCtrl::CalcScrolledPosition(int x, int y, int *xx, int *yy) const |
| 3442 | { |
| 3443 | if ( IsSingleLine() ) |
| 3444 | { |
| 3445 | // we don't use wxScrollHelper |
| 3446 | if ( xx ) |
| 3447 | *xx = x - SData().m_ofsHorz; |
| 3448 | if ( yy ) |
| 3449 | *yy = y; |
| 3450 | } |
| 3451 | else |
| 3452 | { |
| 3453 | // let the base class do it |
| 3454 | wxScrollHelper::CalcScrolledPosition(x, y, xx, yy); |
| 3455 | } |
| 3456 | } |
| 3457 | |
| 3458 | void wxTextCtrl::DoPrepareDC(wxDC& dc) |
| 3459 | { |
| 3460 | // for single line controls we only have to deal with SData().m_ofsHorz and it's |
| 3461 | // useless to call base class version as they don't use normal scrolling |
| 3462 | if ( IsSingleLine() && SData().m_ofsHorz ) |
| 3463 | { |
| 3464 | // adjust the DC origin if the text is shifted |
| 3465 | wxPoint pt = dc.GetDeviceOrigin(); |
| 3466 | dc.SetDeviceOrigin(pt.x - SData().m_ofsHorz, pt.y); |
| 3467 | } |
| 3468 | else |
| 3469 | { |
| 3470 | wxScrollHelper::DoPrepareDC(dc); |
| 3471 | } |
| 3472 | } |
| 3473 | |
| 3474 | void wxTextCtrl::UpdateMaxWidth(wxTextCoord line) |
| 3475 | { |
| 3476 | // OPT! |
| 3477 | |
| 3478 | // check if the max width changes after this line was modified |
| 3479 | wxCoord widthMaxOld = MData().m_widthMax, |
| 3480 | width; |
| 3481 | GetTextExtent(GetLineText(line), &width, NULL); |
| 3482 | |
| 3483 | if ( line == MData().m_lineLongest ) |
| 3484 | { |
| 3485 | // this line was the longest one, is it still? |
| 3486 | if ( width > MData().m_widthMax ) |
| 3487 | { |
| 3488 | MData().m_widthMax = width; |
| 3489 | } |
| 3490 | else if ( width < MData().m_widthMax ) |
| 3491 | { |
| 3492 | // we need to find the new longest line |
| 3493 | RecalcMaxWidth(); |
| 3494 | } |
| 3495 | //else: its length didn't change, nothing to do |
| 3496 | } |
| 3497 | else // it wasn't the longest line, but maybe it became it? |
| 3498 | { |
| 3499 | // GetMaxWidth() and not MData().m_widthMax as it might be not calculated yet |
| 3500 | if ( width > GetMaxWidth() ) |
| 3501 | { |
| 3502 | MData().m_widthMax = width; |
| 3503 | MData().m_lineLongest = line; |
| 3504 | } |
| 3505 | } |
| 3506 | |
| 3507 | MData().m_updateScrollbarX = MData().m_widthMax != widthMaxOld; |
| 3508 | } |
| 3509 | |
| 3510 | void wxTextCtrl::RecalcFontMetrics() |
| 3511 | { |
| 3512 | m_heightLine = GetCharHeight(); |
| 3513 | m_widthAvg = GetCharWidth(); |
| 3514 | } |
| 3515 | |
| 3516 | void wxTextCtrl::RecalcMaxWidth() |
| 3517 | { |
| 3518 | wxASSERT_MSG( !IsSingleLine(), _T("only used for multiline") ); |
| 3519 | |
| 3520 | MData().m_widthMax = -1; |
| 3521 | (void)GetMaxWidth(); |
| 3522 | } |
| 3523 | |
| 3524 | wxCoord wxTextCtrl::GetMaxWidth() const |
| 3525 | { |
| 3526 | if ( MData().m_widthMax == -1 ) |
| 3527 | { |
| 3528 | // recalculate it |
| 3529 | |
| 3530 | // OPT: should we remember the widths of all the lines? |
| 3531 | |
| 3532 | wxTextCtrl *self = wxConstCast(this, wxTextCtrl); |
| 3533 | wxClientDC dc(self); |
| 3534 | dc.SetFont(GetFont()); |
| 3535 | |
| 3536 | self->MData().m_widthMax = 0; |
| 3537 | |
| 3538 | size_t count = GetLineCount(); |
| 3539 | for ( size_t n = 0; n < count; n++ ) |
| 3540 | { |
| 3541 | wxCoord width; |
| 3542 | dc.GetTextExtent(GetLines()[n], &width, NULL); |
| 3543 | if ( width > MData().m_widthMax ) |
| 3544 | { |
| 3545 | // remember the width and the line which has it |
| 3546 | self->MData().m_widthMax = width; |
| 3547 | self->MData().m_lineLongest = n; |
| 3548 | } |
| 3549 | } |
| 3550 | } |
| 3551 | |
| 3552 | wxASSERT_MSG( MData().m_widthMax != -1, _T("should have at least 1 line") ); |
| 3553 | |
| 3554 | return MData().m_widthMax; |
| 3555 | } |
| 3556 | |
| 3557 | void wxTextCtrl::UpdateScrollbars() |
| 3558 | { |
| 3559 | wxASSERT_MSG( !IsSingleLine(), _T("only used for multiline") ); |
| 3560 | |
| 3561 | wxSize size = GetRealTextArea().GetSize(); |
| 3562 | |
| 3563 | // is our height enough to show all items? |
| 3564 | wxTextCoord nRows = GetRowCount(); |
| 3565 | wxCoord lineHeight = GetLineHeight(); |
| 3566 | bool showScrollbarY = nRows*lineHeight > size.y; |
| 3567 | |
| 3568 | // is our width enough to show the longest line? |
| 3569 | wxCoord charWidth, maxWidth; |
| 3570 | bool showScrollbarX; |
| 3571 | if ( !WrapLines() ) |
| 3572 | { |
| 3573 | charWidth = GetAverageWidth(); |
| 3574 | maxWidth = GetMaxWidth(); |
| 3575 | showScrollbarX = maxWidth > size.x; |
| 3576 | } |
| 3577 | else // never show the horz scrollbar |
| 3578 | { |
| 3579 | // just to suppress compiler warnings about using uninit vars below |
| 3580 | charWidth = maxWidth = 0; |
| 3581 | |
| 3582 | showScrollbarX = false; |
| 3583 | } |
| 3584 | |
| 3585 | // calc the scrollbars ranges |
| 3586 | int scrollRangeX = showScrollbarX |
| 3587 | ? (maxWidth + 2*charWidth - 1) / charWidth |
| 3588 | : 0; |
| 3589 | int scrollRangeY = showScrollbarY ? nRows : 0; |
| 3590 | |
| 3591 | int scrollRangeXOld = MData().m_scrollRangeX, |
| 3592 | scrollRangeYOld = MData().m_scrollRangeY; |
| 3593 | if ( (scrollRangeY != scrollRangeYOld) || (scrollRangeX != scrollRangeXOld) ) |
| 3594 | { |
| 3595 | int x, y; |
| 3596 | GetViewStart(&x, &y); |
| 3597 | |
| 3598 | #if 0 |
| 3599 | // we want to leave the scrollbars at the same position which means |
| 3600 | // that x and y have to be adjusted as the number of positions may have |
| 3601 | // changed |
| 3602 | // |
| 3603 | // the number of positions is calculated from knowing that last |
| 3604 | // position = range - thumbSize and thumbSize == pageSize which is |
| 3605 | // equal to the window width / pixelsPerLine |
| 3606 | if ( scrollRangeXOld ) |
| 3607 | { |
| 3608 | x *= scrollRangeX - m_rectText.width / charWidth; |
| 3609 | x /= scrollRangeXOld - m_rectText.width / charWidth; |
| 3610 | } |
| 3611 | |
| 3612 | if ( scrollRangeYOld ) |
| 3613 | y *= scrollRangeY / scrollRangeYOld; |
| 3614 | #endif // 0 |
| 3615 | |
| 3616 | SetScrollbars(charWidth, lineHeight, |
| 3617 | scrollRangeX, scrollRangeY, |
| 3618 | x, y, |
| 3619 | true /* no refresh */); |
| 3620 | |
| 3621 | if ( scrollRangeXOld ) |
| 3622 | { |
| 3623 | const int w = m_rectText.width / charWidth; |
| 3624 | if ( w != scrollRangeXOld ) |
| 3625 | { |
| 3626 | x *= scrollRangeX - w; |
| 3627 | x /= scrollRangeXOld - w; |
| 3628 | } |
| 3629 | Scroll(x, y); |
| 3630 | } |
| 3631 | |
| 3632 | MData().m_scrollRangeX = scrollRangeX; |
| 3633 | MData().m_scrollRangeY = scrollRangeY; |
| 3634 | |
| 3635 | // bring the current position in view |
| 3636 | ShowPosition(-1); |
| 3637 | } |
| 3638 | |
| 3639 | MData().m_updateScrollbarX = |
| 3640 | MData().m_updateScrollbarY = false; |
| 3641 | } |
| 3642 | |
| 3643 | void wxTextCtrl::OnInternalIdle() |
| 3644 | { |
| 3645 | // notice that single line text control never has scrollbars |
| 3646 | if ( !IsSingleLine() && |
| 3647 | (MData().m_updateScrollbarX || MData().m_updateScrollbarY) ) |
| 3648 | { |
| 3649 | UpdateScrollbars(); |
| 3650 | } |
| 3651 | wxControl::OnInternalIdle(); |
| 3652 | } |
| 3653 | |
| 3654 | bool wxTextCtrl::SendAutoScrollEvents(wxScrollWinEvent& event) const |
| 3655 | { |
| 3656 | bool forward = event.GetEventType() == wxEVT_SCROLLWIN_LINEDOWN; |
| 3657 | if ( event.GetOrientation() == wxHORIZONTAL ) |
| 3658 | { |
| 3659 | return forward ? m_curCol <= GetLineLength(m_curRow) : m_curCol > 0; |
| 3660 | } |
| 3661 | else // wxVERTICAL |
| 3662 | { |
| 3663 | return forward ? m_curRow < GetNumberOfLines() : m_curRow > 0; |
| 3664 | } |
| 3665 | } |
| 3666 | |
| 3667 | // ---------------------------------------------------------------------------- |
| 3668 | // refresh |
| 3669 | // ---------------------------------------------------------------------------- |
| 3670 | |
| 3671 | void wxTextCtrl::RefreshSelection() |
| 3672 | { |
| 3673 | if ( HasSelection() ) |
| 3674 | { |
| 3675 | RefreshTextRange(m_selStart, m_selEnd); |
| 3676 | } |
| 3677 | } |
| 3678 | |
| 3679 | void wxTextCtrl::RefreshLineRange(wxTextCoord lineFirst, wxTextCoord lineLast) |
| 3680 | { |
| 3681 | wxASSERT_MSG( lineFirst <= lineLast || !lineLast, |
| 3682 | _T("no lines to refresh") ); |
| 3683 | |
| 3684 | wxRect rect; |
| 3685 | // rect.x is already 0 |
| 3686 | rect.width = m_rectText.width; |
| 3687 | wxCoord h = GetLineHeight(); |
| 3688 | |
| 3689 | wxTextCoord rowFirst; |
| 3690 | if ( lineFirst < GetNumberOfLines() ) |
| 3691 | { |
| 3692 | rowFirst = GetFirstRowOfLine(lineFirst); |
| 3693 | } |
| 3694 | else // lineFirst == GetNumberOfLines() |
| 3695 | { |
| 3696 | // lineFirst may be beyond the last line only if we refresh till |
| 3697 | // the end, otherwise it's illegal |
| 3698 | wxASSERT_MSG( lineFirst == GetNumberOfLines() && !lineLast, |
| 3699 | _T("invalid line range") ); |
| 3700 | |
| 3701 | rowFirst = GetRowAfterLine(lineFirst - 1); |
| 3702 | } |
| 3703 | |
| 3704 | rect.y = rowFirst*h; |
| 3705 | |
| 3706 | if ( lineLast ) |
| 3707 | { |
| 3708 | // refresh till this line (inclusive) |
| 3709 | wxTextCoord rowLast = GetRowAfterLine(lineLast); |
| 3710 | |
| 3711 | rect.height = (rowLast - rowFirst + 1)*h; |
| 3712 | } |
| 3713 | else // lineLast == 0 means to refresh till the end |
| 3714 | { |
| 3715 | // FIXME: calc it exactly |
| 3716 | rect.height = 32000; |
| 3717 | } |
| 3718 | |
| 3719 | RefreshTextRect(rect); |
| 3720 | } |
| 3721 | |
| 3722 | void wxTextCtrl::RefreshTextRange(wxTextPos start, wxTextPos end) |
| 3723 | { |
| 3724 | wxCHECK_RET( start != -1 && end != -1, |
| 3725 | _T("invalid RefreshTextRange() arguments") ); |
| 3726 | |
| 3727 | // accept arguments in any order as it is more conenient for the caller |
| 3728 | OrderPositions(start, end); |
| 3729 | |
| 3730 | // this is acceptable but we don't do anything in this case |
| 3731 | if ( start == end ) |
| 3732 | return; |
| 3733 | |
| 3734 | wxTextPos colStart, lineStart; |
| 3735 | if ( !PositionToXY(start, &colStart, &lineStart) ) |
| 3736 | { |
| 3737 | // the range is entirely beyond the end of the text, nothing to do |
| 3738 | return; |
| 3739 | } |
| 3740 | |
| 3741 | wxTextCoord colEnd, lineEnd; |
| 3742 | if ( !PositionToXY(end, &colEnd, &lineEnd) ) |
| 3743 | { |
| 3744 | // the range spans beyond the end of text, refresh to the end |
| 3745 | colEnd = -1; |
| 3746 | lineEnd = GetNumberOfLines() - 1; |
| 3747 | } |
| 3748 | |
| 3749 | // refresh all lines one by one |
| 3750 | for ( wxTextCoord line = lineStart; line <= lineEnd; line++ ) |
| 3751 | { |
| 3752 | // refresh the first line from the start of the range to the end, the |
| 3753 | // intermediate ones entirely and the last one from the beginning to |
| 3754 | // the end of the range |
| 3755 | wxTextPos posStart = line == lineStart ? colStart : 0; |
| 3756 | size_t posCount; |
| 3757 | if ( (line != lineEnd) || (colEnd == -1) ) |
| 3758 | { |
| 3759 | // intermediate line or the last one but we need to refresh it |
| 3760 | // until the end anyhow - do it |
| 3761 | posCount = wxString::npos; |
| 3762 | } |
| 3763 | else // last line |
| 3764 | { |
| 3765 | // refresh just the positions in between the start and the end one |
| 3766 | posCount = colEnd - posStart; |
| 3767 | } |
| 3768 | |
| 3769 | if ( posCount ) |
| 3770 | RefreshColRange(line, posStart, posCount); |
| 3771 | } |
| 3772 | } |
| 3773 | |
| 3774 | void wxTextCtrl::RefreshColRange(wxTextCoord line, |
| 3775 | wxTextPos start, |
| 3776 | size_t count) |
| 3777 | { |
| 3778 | wxString text = GetLineText(line); |
| 3779 | |
| 3780 | wxASSERT_MSG( (size_t)start <= text.length() && count, |
| 3781 | _T("invalid RefreshColRange() parameter") ); |
| 3782 | |
| 3783 | RefreshPixelRange(line, |
| 3784 | GetTextWidth(text.Left((size_t)start)), |
| 3785 | GetTextWidth(text.Mid((size_t)start, (size_t)count))); |
| 3786 | } |
| 3787 | |
| 3788 | // this method accepts "logical" coords in the sense that they are coordinates |
| 3789 | // in a logical line but it can span several rows if we wrap lines and |
| 3790 | // RefreshPixelRange() will then refresh several rows |
| 3791 | void wxTextCtrl::RefreshPixelRange(wxTextCoord line, |
| 3792 | wxCoord start, |
| 3793 | wxCoord width) |
| 3794 | { |
| 3795 | // we will use line text only in line wrap case |
| 3796 | wxString text; |
| 3797 | if ( WrapLines() ) |
| 3798 | { |
| 3799 | text = GetLineText(line); |
| 3800 | } |
| 3801 | |
| 3802 | // special case: width == 0 means to refresh till the end of line |
| 3803 | if ( width == 0 ) |
| 3804 | { |
| 3805 | // refresh till the end of visible line |
| 3806 | width = GetTotalWidth(); |
| 3807 | |
| 3808 | if ( WrapLines() ) |
| 3809 | { |
| 3810 | // refresh till the end of text |
| 3811 | wxCoord widthAll = GetTextWidth(text); |
| 3812 | |
| 3813 | // extend width to the end of ROW |
| 3814 | width = widthAll - widthAll % width + width; |
| 3815 | } |
| 3816 | |
| 3817 | // no need to refresh beyond the end of line |
| 3818 | width -= start; |
| 3819 | } |
| 3820 | //else: just refresh the specified part |
| 3821 | |
| 3822 | wxCoord h = GetLineHeight(); |
| 3823 | wxRect rect; |
| 3824 | rect.x = start; |
| 3825 | rect.y = GetFirstRowOfLine(line)*h; |
| 3826 | rect.height = h; |
| 3827 | |
| 3828 | if ( WrapLines() ) |
| 3829 | { |
| 3830 | // (1) skip all rows which we don't touch at all |
| 3831 | const wxWrappedLineData& lineData = WData().m_linesData[line]; |
| 3832 | if ( !WData().IsValidLine(line) ) |
| 3833 | LayoutLines(line); |
| 3834 | |
| 3835 | wxCoord wLine = 0; // suppress compiler warning about uninit var |
| 3836 | size_t rowLast = lineData.GetRowCount(), |
| 3837 | row = 0; |
| 3838 | while ( (row < rowLast) && |
| 3839 | (rect.x > (wLine = lineData.GetRowWidth(row++))) ) |
| 3840 | { |
| 3841 | rect.x -= wLine; |
| 3842 | rect.y += h; |
| 3843 | } |
| 3844 | |
| 3845 | // (2) now refresh all lines except the last one: note that the first |
| 3846 | // line is refreshed from the given start to the end, all the next |
| 3847 | // ones - entirely |
| 3848 | while ( (row < rowLast) && (width > wLine - rect.x) ) |
| 3849 | { |
| 3850 | rect.width = GetTotalWidth() - rect.x; |
| 3851 | RefreshTextRect(rect); |
| 3852 | |
| 3853 | width -= wLine - rect.x; |
| 3854 | rect.x = 0; |
| 3855 | rect.y += h; |
| 3856 | |
| 3857 | wLine = lineData.GetRowWidth(row++); |
| 3858 | } |
| 3859 | |
| 3860 | // (3) the code below will refresh the last line |
| 3861 | } |
| 3862 | |
| 3863 | rect.width = width; |
| 3864 | |
| 3865 | RefreshTextRect(rect); |
| 3866 | } |
| 3867 | |
| 3868 | void wxTextCtrl::RefreshTextRect(const wxRect& rectClient, bool textOnly) |
| 3869 | { |
| 3870 | wxRect rect; |
| 3871 | CalcScrolledPosition(rectClient.x, rectClient.y, &rect.x, &rect.y); |
| 3872 | rect.width = rectClient.width; |
| 3873 | rect.height = rectClient.height; |
| 3874 | |
| 3875 | // account for the text area offset |
| 3876 | rect.Offset(m_rectText.GetPosition()); |
| 3877 | |
| 3878 | // don't refresh beyond the text area unless we're refreshing the line wrap |
| 3879 | // marks in which case textOnly is false |
| 3880 | if ( textOnly ) |
| 3881 | { |
| 3882 | if ( rect.GetRight() > m_rectText.GetRight() ) |
| 3883 | { |
| 3884 | rect.SetRight(m_rectText.GetRight()); |
| 3885 | |
| 3886 | if ( rect.width <= 0 ) |
| 3887 | { |
| 3888 | // nothing to refresh |
| 3889 | return; |
| 3890 | } |
| 3891 | } |
| 3892 | } |
| 3893 | |
| 3894 | // check the bottom boundary always, even for the line wrap marks |
| 3895 | if ( rect.GetBottom() > m_rectText.GetBottom() ) |
| 3896 | { |
| 3897 | rect.SetBottom(m_rectText.GetBottom()); |
| 3898 | |
| 3899 | if ( rect.height <= 0 ) |
| 3900 | { |
| 3901 | // nothing to refresh |
| 3902 | return; |
| 3903 | } |
| 3904 | } |
| 3905 | |
| 3906 | // never refresh before the visible rect |
| 3907 | if ( rect.x < m_rectText.x ) |
| 3908 | rect.x = m_rectText.x; |
| 3909 | |
| 3910 | if ( rect.y < m_rectText.y ) |
| 3911 | rect.y = m_rectText.y; |
| 3912 | |
| 3913 | wxLogTrace(_T("text"), _T("Refreshing (%d, %d)-(%d, %d)"), |
| 3914 | rect.x, rect.y, rect.x + rect.width, rect.y + rect.height); |
| 3915 | |
| 3916 | Refresh(true, &rect); |
| 3917 | } |
| 3918 | |
| 3919 | void wxTextCtrl::RefreshLineWrapMarks(wxTextCoord rowFirst, |
| 3920 | wxTextCoord rowLast) |
| 3921 | { |
| 3922 | if ( WData().m_widthMark ) |
| 3923 | { |
| 3924 | wxRect rectMarks; |
| 3925 | rectMarks.x = m_rectText.width; |
| 3926 | rectMarks.width = WData().m_widthMark; |
| 3927 | rectMarks.y = rowFirst*GetLineHeight(); |
| 3928 | rectMarks.height = (rowLast - rowFirst)*GetLineHeight(); |
| 3929 | |
| 3930 | RefreshTextRect(rectMarks, false /* don't limit to text area */); |
| 3931 | } |
| 3932 | } |
| 3933 | |
| 3934 | // ---------------------------------------------------------------------------- |
| 3935 | // border drawing |
| 3936 | // ---------------------------------------------------------------------------- |
| 3937 | |
| 3938 | void wxTextCtrl::DoDrawBorder(wxDC& dc, const wxRect& rect) |
| 3939 | { |
| 3940 | m_renderer->DrawTextBorder(dc, GetBorder(), rect, GetStateFlags()); |
| 3941 | } |
| 3942 | |
| 3943 | // ---------------------------------------------------------------------------- |
| 3944 | // client area drawing |
| 3945 | // ---------------------------------------------------------------------------- |
| 3946 | |
| 3947 | /* |
| 3948 | Several remarks about wxTextCtrl redraw logic: |
| 3949 | |
| 3950 | 1. only the regions which must be updated are redrawn, this means that we |
| 3951 | never Refresh() the entire window but use RefreshPixelRange() and |
| 3952 | ScrollWindow() which only refresh small parts of it and iterate over the |
| 3953 | update region in our DoDraw() |
| 3954 | |
| 3955 | 2. the text displayed on the screen is obtained using GetTextToShow(): it |
| 3956 | should be used for all drawing/measuring |
| 3957 | */ |
| 3958 | |
| 3959 | wxString wxTextCtrl::GetTextToShow(const wxString& text) const |
| 3960 | { |
| 3961 | wxString textShown; |
| 3962 | if ( IsPassword() ) |
| 3963 | textShown = wxString(_T('*'), text.length()); |
| 3964 | else |
| 3965 | textShown = text; |
| 3966 | |
| 3967 | return textShown; |
| 3968 | } |
| 3969 | |
| 3970 | void wxTextCtrl::DoDrawTextInRect(wxDC& dc, const wxRect& rectUpdate) |
| 3971 | { |
| 3972 | // debugging trick to see the update rect visually |
| 3973 | #ifdef WXDEBUG_TEXT |
| 3974 | static int s_countUpdates = -1; |
| 3975 | if ( s_countUpdates != -1 ) |
| 3976 | { |
| 3977 | wxWindowDC dc(this); |
| 3978 | dc.SetBrush(*(++s_countUpdates % 2 ? wxRED_BRUSH : wxGREEN_BRUSH)); |
| 3979 | dc.SetPen(*wxTRANSPARENT_PEN); |
| 3980 | dc.DrawRectangle(rectUpdate); |
| 3981 | } |
| 3982 | #endif // WXDEBUG_TEXT |
| 3983 | |
| 3984 | // calculate the range lineStart..lineEnd of lines to redraw |
| 3985 | wxTextCoord lineStart, lineEnd; |
| 3986 | if ( IsSingleLine() ) |
| 3987 | { |
| 3988 | lineStart = |
| 3989 | lineEnd = 0; |
| 3990 | } |
| 3991 | else // multiline |
| 3992 | { |
| 3993 | wxPoint pt = rectUpdate.GetPosition(); |
| 3994 | (void)HitTest(pt, NULL, &lineStart); |
| 3995 | |
| 3996 | pt.y += rectUpdate.height; |
| 3997 | (void)HitTest(pt, NULL, &lineEnd); |
| 3998 | } |
| 3999 | |
| 4000 | // prepare for drawing |
| 4001 | wxCoord hLine = GetLineHeight(); |
| 4002 | |
| 4003 | // these vars will be used for hit testing of the current row |
| 4004 | wxCoord y = rectUpdate.y; |
| 4005 | const wxCoord x1 = rectUpdate.x; |
| 4006 | const wxCoord x2 = rectUpdate.x + rectUpdate.width; |
| 4007 | |
| 4008 | wxRect rectText; |
| 4009 | rectText.height = hLine; |
| 4010 | wxCoord yClient = y - GetClientAreaOrigin().y; |
| 4011 | |
| 4012 | // we want to always start at the top of the line, otherwise if we redraw a |
| 4013 | // rect whose top is in the middle of a line, we'd draw this line shifted |
| 4014 | yClient -= (yClient - m_rectText.y) % hLine; |
| 4015 | |
| 4016 | if ( IsSingleLine() ) |
| 4017 | { |
| 4018 | rectText.y = yClient; |
| 4019 | } |
| 4020 | else // multiline, adjust for scrolling |
| 4021 | { |
| 4022 | CalcUnscrolledPosition(0, yClient, NULL, &rectText.y); |
| 4023 | } |
| 4024 | |
| 4025 | wxRenderer *renderer = GetRenderer(); |
| 4026 | |
| 4027 | // do draw the invalidated parts of each line: note that we iterate here |
| 4028 | // over ROWs, not over LINEs |
| 4029 | for ( wxTextCoord line = lineStart; |
| 4030 | y < rectUpdate.y + rectUpdate.height; |
| 4031 | y += hLine, |
| 4032 | rectText.y += hLine ) |
| 4033 | { |
| 4034 | // calculate the update rect in text positions for this line |
| 4035 | wxTextCoord colStart, colEnd, colRowStart; |
| 4036 | wxTextCtrlHitTestResult ht = HitTest2(y, x1, x2, |
| 4037 | &line, &colStart, &colEnd, |
| 4038 | &colRowStart); |
| 4039 | |
| 4040 | if ( (ht == wxTE_HT_BEYOND) || (ht == wxTE_HT_BELOW) ) |
| 4041 | { |
| 4042 | wxASSERT_MSG( line <= lineEnd, _T("how did we get that far?") ); |
| 4043 | |
| 4044 | if ( line == lineEnd ) |
| 4045 | { |
| 4046 | // we redrew everything |
| 4047 | break; |
| 4048 | } |
| 4049 | |
| 4050 | // the update rect is beyond the end of line, no need to redraw |
| 4051 | // anything on this line - but continue with the remaining ones |
| 4052 | continue; |
| 4053 | } |
| 4054 | |
| 4055 | // for single line controls we may additionally cut off everything |
| 4056 | // which is to the right of the last visible position |
| 4057 | if ( IsSingleLine() ) |
| 4058 | { |
| 4059 | // don't show the columns which are scrolled out to the left |
| 4060 | if ( colStart < SData().m_colStart ) |
| 4061 | colStart = SData().m_colStart; |
| 4062 | |
| 4063 | // colEnd may be less than colStart if colStart was changed by the |
| 4064 | // assignment above |
| 4065 | if ( colEnd < colStart ) |
| 4066 | colEnd = colStart; |
| 4067 | |
| 4068 | // don't draw the chars beyond the rightmost one |
| 4069 | if ( SData().m_colLastVisible == -1 ) |
| 4070 | { |
| 4071 | // recalculate this rightmost column |
| 4072 | UpdateLastVisible(); |
| 4073 | } |
| 4074 | |
| 4075 | if ( colStart > SData().m_colLastVisible ) |
| 4076 | { |
| 4077 | // don't bother redrawing something that is beyond the last |
| 4078 | // visible position |
| 4079 | continue; |
| 4080 | } |
| 4081 | |
| 4082 | if ( colEnd > SData().m_colLastVisible ) |
| 4083 | { |
| 4084 | colEnd = SData().m_colLastVisible; |
| 4085 | } |
| 4086 | } |
| 4087 | |
| 4088 | // extract the part of line we need to redraw |
| 4089 | wxString textLine = GetTextToShow(GetLineText(line)); |
| 4090 | wxString text = textLine.Mid(colStart, colEnd - colStart + 1); |
| 4091 | |
| 4092 | // now deal with the selection: only do something if at least part of |
| 4093 | // the line is selected |
| 4094 | wxTextPos selStart, selEnd; |
| 4095 | if ( GetSelectedPartOfLine(line, &selStart, &selEnd) ) |
| 4096 | { |
| 4097 | // and if this part is (at least partly) in the current row |
| 4098 | if ( (selStart <= colEnd) && |
| 4099 | (selEnd >= wxMax(colStart, colRowStart)) ) |
| 4100 | { |
| 4101 | // these values are relative to the start of the line while the |
| 4102 | // string passed to DrawTextLine() is only part of it, so |
| 4103 | // adjust the selection range accordingly |
| 4104 | selStart -= colStart; |
| 4105 | selEnd -= colStart; |
| 4106 | |
| 4107 | if ( selStart < 0 ) |
| 4108 | selStart = 0; |
| 4109 | |
| 4110 | if ( (size_t)selEnd >= text.length() ) |
| 4111 | selEnd = text.length(); |
| 4112 | } |
| 4113 | else |
| 4114 | { |
| 4115 | // reset selStart and selEnd to avoid passing them to |
| 4116 | // DrawTextLine() below |
| 4117 | selStart = |
| 4118 | selEnd = -1; |
| 4119 | } |
| 4120 | } |
| 4121 | |
| 4122 | // calculate the text coords on screen |
| 4123 | wxASSERT_MSG( colStart >= colRowStart, _T("invalid string part") ); |
| 4124 | wxCoord ofsStart = GetTextWidth( |
| 4125 | textLine.Mid(colRowStart, |
| 4126 | colStart - colRowStart)); |
| 4127 | rectText.x = m_rectText.x + ofsStart; |
| 4128 | rectText.width = GetTextWidth(text); |
| 4129 | |
| 4130 | // do draw the text |
| 4131 | renderer->DrawTextLine(dc, text, rectText, selStart, selEnd, |
| 4132 | GetStateFlags()); |
| 4133 | wxLogTrace(_T("text"), _T("Line %ld: positions %ld-%ld redrawn."), |
| 4134 | line, colStart, colEnd); |
| 4135 | } |
| 4136 | } |
| 4137 | |
| 4138 | void wxTextCtrl::DoDrawLineWrapMarks(wxDC& dc, const wxRect& rectUpdate) |
| 4139 | { |
| 4140 | wxASSERT_MSG( WrapLines() && WData().m_widthMark, |
| 4141 | _T("shouldn't be called at all") ); |
| 4142 | |
| 4143 | wxRenderer *renderer = GetRenderer(); |
| 4144 | |
| 4145 | wxRect rectMark; |
| 4146 | rectMark.x = rectUpdate.x; |
| 4147 | rectMark.width = rectUpdate.width; |
| 4148 | wxCoord yTop = GetClientAreaOrigin().y; |
| 4149 | CalcUnscrolledPosition(0, rectUpdate.y - yTop, NULL, &rectMark.y); |
| 4150 | wxCoord hLine = GetLineHeight(); |
| 4151 | rectMark.height = hLine; |
| 4152 | |
| 4153 | wxTextCoord line, rowInLine; |
| 4154 | |
| 4155 | wxCoord yBottom; |
| 4156 | CalcUnscrolledPosition(0, rectUpdate.GetBottom() - yTop, NULL, &yBottom); |
| 4157 | for ( ; rectMark.y < yBottom; rectMark.y += hLine ) |
| 4158 | { |
| 4159 | if ( !GetLineAndRow(rectMark.y / hLine, &line, &rowInLine) ) |
| 4160 | { |
| 4161 | // we went beyond the end of text |
| 4162 | break; |
| 4163 | } |
| 4164 | |
| 4165 | // is this row continued on the next one? |
| 4166 | if ( !WData().m_linesData[line].IsLastRow(rowInLine) ) |
| 4167 | { |
| 4168 | renderer->DrawLineWrapMark(dc, rectMark); |
| 4169 | } |
| 4170 | } |
| 4171 | } |
| 4172 | |
| 4173 | void wxTextCtrl::DoDraw(wxControlRenderer *renderer) |
| 4174 | { |
| 4175 | // hide the caret while we're redrawing the window and show it after we are |
| 4176 | // done with it |
| 4177 | wxCaretSuspend cs(this); |
| 4178 | |
| 4179 | // prepare the DC |
| 4180 | wxDC& dc = renderer->GetDC(); |
| 4181 | dc.SetFont(GetFont()); |
| 4182 | dc.SetTextForeground(GetForegroundColour()); |
| 4183 | |
| 4184 | // get the intersection of the update region with the text area: note that |
| 4185 | // the update region is in window coords and text area is in the client |
| 4186 | // ones, so it must be shifted before computing intersection |
| 4187 | wxRegion rgnUpdate = GetUpdateRegion(); |
| 4188 | |
| 4189 | wxRect rectTextArea = GetRealTextArea(); |
| 4190 | wxPoint pt = GetClientAreaOrigin(); |
| 4191 | wxRect rectTextAreaAdjusted = rectTextArea; |
| 4192 | rectTextAreaAdjusted.x += pt.x; |
| 4193 | rectTextAreaAdjusted.y += pt.y; |
| 4194 | rgnUpdate.Intersect(rectTextAreaAdjusted); |
| 4195 | |
| 4196 | // even though the drawing is already clipped to the update region, we must |
| 4197 | // explicitly clip it to the rect we will use as otherwise parts of letters |
| 4198 | // might be drawn outside of it (if even a small part of a charater is |
| 4199 | // inside, HitTest() will return its column and DrawText() can't draw only |
| 4200 | // the part of the character, of course) |
| 4201 | #ifdef __WXMSW__ |
| 4202 | // FIXME: is this really a bug in wxMSW? |
| 4203 | rectTextArea.width--; |
| 4204 | #endif // __WXMSW__ |
| 4205 | dc.DestroyClippingRegion(); |
| 4206 | dc.SetClippingRegion(rectTextArea); |
| 4207 | |
| 4208 | // adjust for scrolling |
| 4209 | DoPrepareDC(dc); |
| 4210 | |
| 4211 | // and now refresh the invalidated parts of the window |
| 4212 | wxRegionIterator iter(rgnUpdate); |
| 4213 | for ( ; iter.HaveRects(); iter++ ) |
| 4214 | { |
| 4215 | wxRect r = iter.GetRect(); |
| 4216 | |
| 4217 | // this is a workaround for wxGTK::wxRegion bug |
| 4218 | #ifdef __WXGTK__ |
| 4219 | if ( !r.width || !r.height ) |
| 4220 | { |
| 4221 | // ignore invalid rect |
| 4222 | continue; |
| 4223 | } |
| 4224 | #endif // __WXGTK__ |
| 4225 | |
| 4226 | DoDrawTextInRect(dc, r); |
| 4227 | } |
| 4228 | |
| 4229 | // now redraw the line wrap marks (if we draw them) |
| 4230 | if ( WrapLines() && WData().m_widthMark ) |
| 4231 | { |
| 4232 | // this is the rect inside which line wrap marks are drawn |
| 4233 | wxRect rectMarks; |
| 4234 | rectMarks.x = rectTextAreaAdjusted.GetRight() + 1; |
| 4235 | rectMarks.y = rectTextAreaAdjusted.y; |
| 4236 | rectMarks.width = WData().m_widthMark; |
| 4237 | rectMarks.height = rectTextAreaAdjusted.height; |
| 4238 | |
| 4239 | rgnUpdate = GetUpdateRegion(); |
| 4240 | rgnUpdate.Intersect(rectMarks); |
| 4241 | |
| 4242 | wxRect rectUpdate = rgnUpdate.GetBox(); |
| 4243 | if ( rectUpdate.width && rectUpdate.height ) |
| 4244 | { |
| 4245 | // the marks are outside previously set clipping region |
| 4246 | dc.DestroyClippingRegion(); |
| 4247 | |
| 4248 | DoDrawLineWrapMarks(dc, rectUpdate); |
| 4249 | } |
| 4250 | } |
| 4251 | |
| 4252 | // show caret first time only: we must show it after drawing the text or |
| 4253 | // the display can be corrupted when it's hidden |
| 4254 | if ( !m_hasCaret && GetCaret() && (FindFocus() == this) ) |
| 4255 | { |
| 4256 | ShowCaret(); |
| 4257 | |
| 4258 | m_hasCaret = true; |
| 4259 | } |
| 4260 | } |
| 4261 | |
| 4262 | // ---------------------------------------------------------------------------- |
| 4263 | // caret |
| 4264 | // ---------------------------------------------------------------------------- |
| 4265 | |
| 4266 | bool wxTextCtrl::SetFont(const wxFont& font) |
| 4267 | { |
| 4268 | if ( !wxControl::SetFont(font) ) |
| 4269 | return false; |
| 4270 | |
| 4271 | // and refresh everything, of course |
| 4272 | InitInsertionPoint(); |
| 4273 | ClearSelection(); |
| 4274 | |
| 4275 | // update geometry parameters |
| 4276 | UpdateTextRect(); |
| 4277 | RecalcFontMetrics(); |
| 4278 | if ( !IsSingleLine() ) |
| 4279 | { |
| 4280 | UpdateScrollbars(); |
| 4281 | RecalcMaxWidth(); |
| 4282 | } |
| 4283 | |
| 4284 | // recreate it, in fact |
| 4285 | CreateCaret(); |
| 4286 | |
| 4287 | Refresh(); |
| 4288 | |
| 4289 | return true; |
| 4290 | } |
| 4291 | |
| 4292 | bool wxTextCtrl::Enable(bool enable) |
| 4293 | { |
| 4294 | if ( !wxTextCtrlBase::Enable(enable) ) |
| 4295 | return false; |
| 4296 | |
| 4297 | if (FindFocus() == this && GetCaret() && |
| 4298 | ((enable && !GetCaret()->IsVisible()) || |
| 4299 | (!enable && GetCaret()->IsVisible()))) |
| 4300 | ShowCaret(enable); |
| 4301 | |
| 4302 | return true; |
| 4303 | } |
| 4304 | |
| 4305 | void wxTextCtrl::CreateCaret() |
| 4306 | { |
| 4307 | wxCaret *caret; |
| 4308 | |
| 4309 | if ( IsEditable() ) |
| 4310 | { |
| 4311 | // FIXME use renderer |
| 4312 | caret = new wxCaret(this, 1, GetLineHeight()); |
| 4313 | } |
| 4314 | else |
| 4315 | { |
| 4316 | // read only controls don't have the caret |
| 4317 | caret = (wxCaret *)NULL; |
| 4318 | } |
| 4319 | |
| 4320 | // SetCaret() will delete the old caret if any |
| 4321 | SetCaret(caret); |
| 4322 | } |
| 4323 | |
| 4324 | void wxTextCtrl::ShowCaret(bool show) |
| 4325 | { |
| 4326 | wxCaret *caret = GetCaret(); |
| 4327 | if ( caret ) |
| 4328 | { |
| 4329 | // (re)position caret correctly |
| 4330 | caret->Move(GetCaretPosition()); |
| 4331 | |
| 4332 | // and show it there |
| 4333 | if ((show && !caret->IsVisible()) || |
| 4334 | (!show && caret->IsVisible())) |
| 4335 | caret->Show(show); |
| 4336 | } |
| 4337 | } |
| 4338 | |
| 4339 | // ---------------------------------------------------------------------------- |
| 4340 | // vertical scrolling (multiline only) |
| 4341 | // ---------------------------------------------------------------------------- |
| 4342 | |
| 4343 | size_t wxTextCtrl::GetLinesPerPage() const |
| 4344 | { |
| 4345 | if ( IsSingleLine() ) |
| 4346 | return 1; |
| 4347 | |
| 4348 | return GetRealTextArea().height / GetLineHeight(); |
| 4349 | } |
| 4350 | |
| 4351 | wxTextPos wxTextCtrl::GetPositionAbove() |
| 4352 | { |
| 4353 | wxCHECK_MSG( !IsSingleLine(), INVALID_POS_VALUE, |
| 4354 | _T("can't move cursor vertically in a single line control") ); |
| 4355 | |
| 4356 | // move the cursor up by one ROW not by one LINE: this means that |
| 4357 | // we should really use HitTest() and not just go to the same |
| 4358 | // position in the previous line |
| 4359 | wxPoint pt = GetCaretPosition() - m_rectText.GetPosition(); |
| 4360 | if ( MData().m_xCaret == -1 ) |
| 4361 | { |
| 4362 | // remember the initial cursor abscissa |
| 4363 | MData().m_xCaret = pt.x; |
| 4364 | } |
| 4365 | else |
| 4366 | { |
| 4367 | // use the remembered abscissa |
| 4368 | pt.x = MData().m_xCaret; |
| 4369 | } |
| 4370 | |
| 4371 | CalcUnscrolledPosition(pt.x, pt.y, &pt.x, &pt.y); |
| 4372 | pt.y -= GetLineHeight(); |
| 4373 | |
| 4374 | wxTextCoord col, row; |
| 4375 | if ( HitTestLogical(pt, &col, &row) == wxTE_HT_BEFORE ) |
| 4376 | { |
| 4377 | // can't move further |
| 4378 | return INVALID_POS_VALUE; |
| 4379 | } |
| 4380 | |
| 4381 | return XYToPosition(col, row); |
| 4382 | } |
| 4383 | |
| 4384 | wxTextPos wxTextCtrl::GetPositionBelow() |
| 4385 | { |
| 4386 | wxCHECK_MSG( !IsSingleLine(), INVALID_POS_VALUE, |
| 4387 | _T("can't move cursor vertically in a single line control") ); |
| 4388 | |
| 4389 | // see comments for wxACTION_TEXT_UP |
| 4390 | wxPoint pt = GetCaretPosition() - m_rectText.GetPosition(); |
| 4391 | if ( MData().m_xCaret == -1 ) |
| 4392 | { |
| 4393 | // remember the initial cursor abscissa |
| 4394 | MData().m_xCaret = pt.x; |
| 4395 | } |
| 4396 | else |
| 4397 | { |
| 4398 | // use the remembered abscissa |
| 4399 | pt.x = MData().m_xCaret; |
| 4400 | } |
| 4401 | |
| 4402 | CalcUnscrolledPosition(pt.x, pt.y, &pt.x, &pt.y); |
| 4403 | pt.y += GetLineHeight(); |
| 4404 | |
| 4405 | wxTextCoord col, row; |
| 4406 | if ( HitTestLogical(pt, &col, &row) == wxTE_HT_BELOW ) |
| 4407 | { |
| 4408 | // can't go further down |
| 4409 | return INVALID_POS_VALUE; |
| 4410 | } |
| 4411 | |
| 4412 | // note that wxTE_HT_BEYOND is ok: it happens when we go down |
| 4413 | // from a longer line to a shorter one, for example (OTOH |
| 4414 | // wxTE_HT_BEFORE can never happen) |
| 4415 | return XYToPosition(col, row); |
| 4416 | } |
| 4417 | |
| 4418 | // ---------------------------------------------------------------------------- |
| 4419 | // input |
| 4420 | // ---------------------------------------------------------------------------- |
| 4421 | |
| 4422 | bool wxTextCtrl::PerformAction(const wxControlAction& actionOrig, |
| 4423 | long numArg, |
| 4424 | const wxString& strArg) |
| 4425 | { |
| 4426 | // has the text changed as result of this action? |
| 4427 | bool textChanged = false; |
| 4428 | |
| 4429 | // the remembered cursor abscissa for multiline text controls is usually |
| 4430 | // reset after each user action but for ones which do use it (UP and DOWN |
| 4431 | // for example) we shouldn't do it - as indicated by this flag |
| 4432 | bool rememberAbscissa = false; |
| 4433 | |
| 4434 | // the command this action corresponds to or NULL if this action doesn't |
| 4435 | // change text at all or can't be undone |
| 4436 | wxTextCtrlCommand *command = (wxTextCtrlCommand *)NULL; |
| 4437 | |
| 4438 | wxString action; |
| 4439 | bool del = false, |
| 4440 | sel = false; |
| 4441 | if ( actionOrig.StartsWith(wxACTION_TEXT_PREFIX_DEL, &action) ) |
| 4442 | { |
| 4443 | if ( IsEditable() ) |
| 4444 | del = true; |
| 4445 | } |
| 4446 | else if ( actionOrig.StartsWith(wxACTION_TEXT_PREFIX_SEL, &action) ) |
| 4447 | { |
| 4448 | sel = true; |
| 4449 | } |
| 4450 | else // not selection nor delete action |
| 4451 | { |
| 4452 | action = actionOrig; |
| 4453 | } |
| 4454 | |
| 4455 | // set newPos to -2 as it can't become equal to it in the assignments below |
| 4456 | // (but it can become -1) |
| 4457 | wxTextPos newPos = INVALID_POS_VALUE; |
| 4458 | |
| 4459 | if ( action == wxACTION_TEXT_HOME ) |
| 4460 | { |
| 4461 | newPos = m_curPos - m_curCol; |
| 4462 | } |
| 4463 | else if ( action == wxACTION_TEXT_END ) |
| 4464 | { |
| 4465 | newPos = m_curPos + GetLineLength(m_curRow) - m_curCol; |
| 4466 | } |
| 4467 | else if ( (action == wxACTION_TEXT_GOTO) || |
| 4468 | (action == wxACTION_TEXT_FIRST) || |
| 4469 | (action == wxACTION_TEXT_LAST) ) |
| 4470 | { |
| 4471 | if ( action == wxACTION_TEXT_FIRST ) |
| 4472 | numArg = 0; |
| 4473 | else if ( action == wxACTION_TEXT_LAST ) |
| 4474 | numArg = GetLastPosition(); |
| 4475 | //else: numArg already contains the position |
| 4476 | |
| 4477 | newPos = numArg; |
| 4478 | } |
| 4479 | else if ( action == wxACTION_TEXT_UP ) |
| 4480 | { |
| 4481 | if ( !IsSingleLine() ) |
| 4482 | { |
| 4483 | newPos = GetPositionAbove(); |
| 4484 | |
| 4485 | if ( newPos != INVALID_POS_VALUE ) |
| 4486 | { |
| 4487 | // remember where the cursor original had been |
| 4488 | rememberAbscissa = true; |
| 4489 | } |
| 4490 | } |
| 4491 | } |
| 4492 | else if ( action == wxACTION_TEXT_DOWN ) |
| 4493 | { |
| 4494 | if ( !IsSingleLine() ) |
| 4495 | { |
| 4496 | newPos = GetPositionBelow(); |
| 4497 | |
| 4498 | if ( newPos != INVALID_POS_VALUE ) |
| 4499 | { |
| 4500 | // remember where the cursor original had been |
| 4501 | rememberAbscissa = true; |
| 4502 | } |
| 4503 | } |
| 4504 | } |
| 4505 | else if ( action == wxACTION_TEXT_LEFT ) |
| 4506 | { |
| 4507 | newPos = m_curPos - 1; |
| 4508 | } |
| 4509 | else if ( action == wxACTION_TEXT_WORD_LEFT ) |
| 4510 | { |
| 4511 | newPos = GetWordStart(); |
| 4512 | } |
| 4513 | else if ( action == wxACTION_TEXT_RIGHT ) |
| 4514 | { |
| 4515 | newPos = m_curPos + 1; |
| 4516 | } |
| 4517 | else if ( action == wxACTION_TEXT_WORD_RIGHT ) |
| 4518 | { |
| 4519 | newPos = GetWordEnd(); |
| 4520 | } |
| 4521 | else if ( action == wxACTION_TEXT_INSERT ) |
| 4522 | { |
| 4523 | if ( IsEditable() && !strArg.empty() ) |
| 4524 | { |
| 4525 | // inserting text can be undone |
| 4526 | command = new wxTextCtrlInsertCommand(strArg); |
| 4527 | |
| 4528 | textChanged = true; |
| 4529 | } |
| 4530 | } |
| 4531 | else if ( (action == wxACTION_TEXT_PAGE_UP) || |
| 4532 | (action == wxACTION_TEXT_PAGE_DOWN) ) |
| 4533 | { |
| 4534 | if ( !IsSingleLine() ) |
| 4535 | { |
| 4536 | size_t count = GetLinesPerPage(); |
| 4537 | if ( count > PAGE_OVERLAP_IN_LINES ) |
| 4538 | { |
| 4539 | // pages should overlap slightly to allow the reader to keep |
| 4540 | // orientation in the text |
| 4541 | count -= PAGE_OVERLAP_IN_LINES; |
| 4542 | } |
| 4543 | |
| 4544 | // remember where the cursor original had been |
| 4545 | rememberAbscissa = true; |
| 4546 | |
| 4547 | bool goUp = action == wxACTION_TEXT_PAGE_UP; |
| 4548 | for ( size_t line = 0; line < count; line++ ) |
| 4549 | { |
| 4550 | wxTextPos pos = goUp ? GetPositionAbove() : GetPositionBelow(); |
| 4551 | if ( pos == INVALID_POS_VALUE ) |
| 4552 | { |
| 4553 | // can't move further |
| 4554 | break; |
| 4555 | } |
| 4556 | |
| 4557 | MoveInsertionPoint(pos); |
| 4558 | newPos = pos; |
| 4559 | } |
| 4560 | |
| 4561 | // we implement the Unix scrolling model here: cursor will always |
| 4562 | // be on the first line after Page Down and on the last one after |
| 4563 | // Page Up |
| 4564 | // |
| 4565 | // Windows programs usually keep the cursor line offset constant |
| 4566 | // but do we really need it? |
| 4567 | wxCoord y; |
| 4568 | if ( goUp ) |
| 4569 | { |
| 4570 | // find the line such that when it is the first one, the |
| 4571 | // current position is in the last line |
| 4572 | wxTextPos pos = 0; |
| 4573 | for ( size_t line = 0; line < count; line++ ) |
| 4574 | { |
| 4575 | pos = GetPositionAbove(); |
| 4576 | if ( pos == INVALID_POS_VALUE ) |
| 4577 | break; |
| 4578 | |
| 4579 | MoveInsertionPoint(pos); |
| 4580 | } |
| 4581 | |
| 4582 | MoveInsertionPoint(newPos); |
| 4583 | |
| 4584 | PositionToLogicalXY(pos, NULL, &y); |
| 4585 | } |
| 4586 | else // scrolled down |
| 4587 | { |
| 4588 | PositionToLogicalXY(newPos, NULL, &y); |
| 4589 | } |
| 4590 | |
| 4591 | // scroll vertically only |
| 4592 | Scroll(wxDefaultCoord, y); |
| 4593 | } |
| 4594 | } |
| 4595 | else if ( action == wxACTION_TEXT_SEL_WORD ) |
| 4596 | { |
| 4597 | SetSelection(GetWordStart(), GetWordEnd()); |
| 4598 | } |
| 4599 | else if ( action == wxACTION_TEXT_ANCHOR_SEL ) |
| 4600 | { |
| 4601 | newPos = numArg; |
| 4602 | } |
| 4603 | else if ( action == wxACTION_TEXT_EXTEND_SEL ) |
| 4604 | { |
| 4605 | SetSelection(m_selAnchor, numArg); |
| 4606 | } |
| 4607 | else if ( action == wxACTION_TEXT_COPY ) |
| 4608 | { |
| 4609 | Copy(); |
| 4610 | } |
| 4611 | else if ( action == wxACTION_TEXT_CUT ) |
| 4612 | { |
| 4613 | if ( IsEditable() ) |
| 4614 | Cut(); |
| 4615 | } |
| 4616 | else if ( action == wxACTION_TEXT_PASTE ) |
| 4617 | { |
| 4618 | if ( IsEditable() ) |
| 4619 | Paste(); |
| 4620 | } |
| 4621 | else if ( action == wxACTION_TEXT_UNDO ) |
| 4622 | { |
| 4623 | if ( CanUndo() ) |
| 4624 | Undo(); |
| 4625 | } |
| 4626 | else if ( action == wxACTION_TEXT_REDO ) |
| 4627 | { |
| 4628 | if ( CanRedo() ) |
| 4629 | Redo(); |
| 4630 | } |
| 4631 | else |
| 4632 | { |
| 4633 | return wxControl::PerformAction(action, numArg, strArg); |
| 4634 | } |
| 4635 | |
| 4636 | if ( newPos != INVALID_POS_VALUE ) |
| 4637 | { |
| 4638 | // bring the new position into the range |
| 4639 | if ( newPos < 0 ) |
| 4640 | newPos = 0; |
| 4641 | |
| 4642 | wxTextPos posLast = GetLastPosition(); |
| 4643 | if ( newPos > posLast ) |
| 4644 | newPos = posLast; |
| 4645 | |
| 4646 | if ( del ) |
| 4647 | { |
| 4648 | // if we have the selection, remove just it |
| 4649 | wxTextPos from, to; |
| 4650 | if ( HasSelection() ) |
| 4651 | { |
| 4652 | from = m_selStart; |
| 4653 | to = m_selEnd; |
| 4654 | } |
| 4655 | else |
| 4656 | { |
| 4657 | // otherwise delete everything between current position and |
| 4658 | // the new one |
| 4659 | if ( m_curPos != newPos ) |
| 4660 | { |
| 4661 | from = m_curPos; |
| 4662 | to = newPos; |
| 4663 | } |
| 4664 | else // nothing to delete |
| 4665 | { |
| 4666 | // prevent test below from working |
| 4667 | from = INVALID_POS_VALUE; |
| 4668 | |
| 4669 | // and this is just to silent the compiler warning |
| 4670 | to = 0; |
| 4671 | } |
| 4672 | } |
| 4673 | |
| 4674 | if ( from != INVALID_POS_VALUE ) |
| 4675 | { |
| 4676 | command = new wxTextCtrlRemoveCommand(from, to); |
| 4677 | } |
| 4678 | } |
| 4679 | else // cursor movement command |
| 4680 | { |
| 4681 | // just go there |
| 4682 | DoSetInsertionPoint(newPos); |
| 4683 | |
| 4684 | if ( sel ) |
| 4685 | { |
| 4686 | SetSelection(m_selAnchor, m_curPos); |
| 4687 | } |
| 4688 | else // simple movement |
| 4689 | { |
| 4690 | // clear the existing selection |
| 4691 | ClearSelection(); |
| 4692 | } |
| 4693 | } |
| 4694 | |
| 4695 | if ( !rememberAbscissa && !IsSingleLine() ) |
| 4696 | { |
| 4697 | MData().m_xCaret = -1; |
| 4698 | } |
| 4699 | } |
| 4700 | |
| 4701 | if ( command ) |
| 4702 | { |
| 4703 | // execute and remember it to be able to undo it later |
| 4704 | m_cmdProcessor->Submit(command); |
| 4705 | |
| 4706 | // undoable commands always change text |
| 4707 | textChanged = true; |
| 4708 | } |
| 4709 | else // no undoable command |
| 4710 | { |
| 4711 | // m_cmdProcessor->StopCompressing() |
| 4712 | } |
| 4713 | |
| 4714 | if ( textChanged ) |
| 4715 | { |
| 4716 | wxASSERT_MSG( IsEditable(), _T("non editable control changed?") ); |
| 4717 | |
| 4718 | wxCommandEvent event(wxEVT_COMMAND_TEXT_UPDATED, GetId()); |
| 4719 | InitCommandEvent(event); |
| 4720 | GetEventHandler()->ProcessEvent(event); |
| 4721 | |
| 4722 | // as the text changed... |
| 4723 | m_isModified = true; |
| 4724 | } |
| 4725 | |
| 4726 | return true; |
| 4727 | } |
| 4728 | |
| 4729 | void wxTextCtrl::OnChar(wxKeyEvent& event) |
| 4730 | { |
| 4731 | // only process the key events from "simple keys" here |
| 4732 | if ( !event.HasModifiers() ) |
| 4733 | { |
| 4734 | int keycode = event.GetKeyCode(); |
| 4735 | #if wxUSE_UNICODE |
| 4736 | wxChar unicode = event.GetUnicodeKey(); |
| 4737 | #endif |
| 4738 | if ( keycode == WXK_RETURN ) |
| 4739 | { |
| 4740 | if ( IsSingleLine() || (GetWindowStyle() & wxTE_PROCESS_ENTER) ) |
| 4741 | { |
| 4742 | wxCommandEvent event(wxEVT_COMMAND_TEXT_ENTER, GetId()); |
| 4743 | InitCommandEvent(event); |
| 4744 | event.SetString(GetValue()); |
| 4745 | GetEventHandler()->ProcessEvent(event); |
| 4746 | } |
| 4747 | else // interpret <Enter> normally: insert new line |
| 4748 | { |
| 4749 | PerformAction(wxACTION_TEXT_INSERT, -1, _T('\n')); |
| 4750 | } |
| 4751 | } |
| 4752 | else if ( keycode < 255 && isprint(keycode) ) |
| 4753 | { |
| 4754 | PerformAction(wxACTION_TEXT_INSERT, -1, (wxChar)keycode); |
| 4755 | |
| 4756 | // skip event.Skip() below |
| 4757 | return; |
| 4758 | } |
| 4759 | #if wxUSE_UNICODE |
| 4760 | else if (unicode > 0) |
| 4761 | { |
| 4762 | PerformAction(wxACTION_TEXT_INSERT, -1, unicode); |
| 4763 | |
| 4764 | return; |
| 4765 | } |
| 4766 | #endif |
| 4767 | } |
| 4768 | #ifdef __WXDEBUG__ |
| 4769 | // Ctrl-R refreshes the control in debug mode |
| 4770 | else if ( event.ControlDown() && event.GetKeyCode() == 'r' ) |
| 4771 | Refresh(); |
| 4772 | #endif // __WXDEBUG__ |
| 4773 | |
| 4774 | event.Skip(); |
| 4775 | } |
| 4776 | |
| 4777 | /* static */ |
| 4778 | wxInputHandler *wxTextCtrl::GetStdInputHandler(wxInputHandler *handlerDef) |
| 4779 | { |
| 4780 | static wxStdTextCtrlInputHandler s_handler(handlerDef); |
| 4781 | |
| 4782 | return &s_handler; |
| 4783 | } |
| 4784 | |
| 4785 | // ---------------------------------------------------------------------------- |
| 4786 | // wxStdTextCtrlInputHandler |
| 4787 | // ---------------------------------------------------------------------------- |
| 4788 | |
| 4789 | wxStdTextCtrlInputHandler::wxStdTextCtrlInputHandler(wxInputHandler *inphand) |
| 4790 | : wxStdInputHandler(inphand) |
| 4791 | { |
| 4792 | m_winCapture = (wxTextCtrl *)NULL; |
| 4793 | } |
| 4794 | |
| 4795 | /* static */ |
| 4796 | wxTextPos wxStdTextCtrlInputHandler::HitTest(const wxTextCtrl *text, |
| 4797 | const wxPoint& pt) |
| 4798 | { |
| 4799 | wxTextCoord col, row; |
| 4800 | wxTextCtrlHitTestResult ht = text->HitTest(pt, &col, &row); |
| 4801 | |
| 4802 | wxTextPos pos = text->XYToPosition(col, row); |
| 4803 | |
| 4804 | // if the point is after the last column we must adjust the position to be |
| 4805 | // the last position in the line (unless it is already the last) |
| 4806 | if ( (ht == wxTE_HT_BEYOND) && (pos < text->GetLastPosition()) ) |
| 4807 | { |
| 4808 | pos++; |
| 4809 | } |
| 4810 | |
| 4811 | return pos; |
| 4812 | } |
| 4813 | |
| 4814 | bool wxStdTextCtrlInputHandler::HandleKey(wxInputConsumer *consumer, |
| 4815 | const wxKeyEvent& event, |
| 4816 | bool pressed) |
| 4817 | { |
| 4818 | // we're only interested in key presses |
| 4819 | if ( !pressed ) |
| 4820 | return false; |
| 4821 | |
| 4822 | int keycode = event.GetKeyCode(); |
| 4823 | |
| 4824 | wxControlAction action; |
| 4825 | wxString str; |
| 4826 | bool ctrlDown = event.ControlDown(), |
| 4827 | shiftDown = event.ShiftDown(); |
| 4828 | if ( shiftDown ) |
| 4829 | { |
| 4830 | action = wxACTION_TEXT_PREFIX_SEL; |
| 4831 | } |
| 4832 | |
| 4833 | // the only key combination with Alt we recognize is Alt-Bksp for undo, so |
| 4834 | // treat it first separately |
| 4835 | if ( event.AltDown() ) |
| 4836 | { |
| 4837 | if ( keycode == WXK_BACK && !ctrlDown && !shiftDown ) |
| 4838 | action = wxACTION_TEXT_UNDO; |
| 4839 | } |
| 4840 | else switch ( keycode ) |
| 4841 | { |
| 4842 | // cursor movement |
| 4843 | case WXK_HOME: |
| 4844 | action << (ctrlDown ? wxACTION_TEXT_FIRST |
| 4845 | : wxACTION_TEXT_HOME); |
| 4846 | break; |
| 4847 | |
| 4848 | case WXK_END: |
| 4849 | action << (ctrlDown ? wxACTION_TEXT_LAST |
| 4850 | : wxACTION_TEXT_END); |
| 4851 | break; |
| 4852 | |
| 4853 | case WXK_UP: |
| 4854 | if ( !ctrlDown ) |
| 4855 | action << wxACTION_TEXT_UP; |
| 4856 | break; |
| 4857 | |
| 4858 | case WXK_DOWN: |
| 4859 | if ( !ctrlDown ) |
| 4860 | action << wxACTION_TEXT_DOWN; |
| 4861 | break; |
| 4862 | |
| 4863 | case WXK_LEFT: |
| 4864 | action << (ctrlDown ? wxACTION_TEXT_WORD_LEFT |
| 4865 | : wxACTION_TEXT_LEFT); |
| 4866 | break; |
| 4867 | |
| 4868 | case WXK_RIGHT: |
| 4869 | action << (ctrlDown ? wxACTION_TEXT_WORD_RIGHT |
| 4870 | : wxACTION_TEXT_RIGHT); |
| 4871 | break; |
| 4872 | |
| 4873 | case WXK_PAGEDOWN: |
| 4874 | // we don't map Ctrl-PgUp/Dn to anything special - what should it |
| 4875 | // to? for now, it's the same as without control |
| 4876 | action << wxACTION_TEXT_PAGE_DOWN; |
| 4877 | break; |
| 4878 | |
| 4879 | case WXK_PAGEUP: |
| 4880 | action << wxACTION_TEXT_PAGE_UP; |
| 4881 | break; |
| 4882 | |
| 4883 | // delete |
| 4884 | case WXK_DELETE: |
| 4885 | if ( !ctrlDown ) |
| 4886 | action << wxACTION_TEXT_PREFIX_DEL << wxACTION_TEXT_RIGHT; |
| 4887 | break; |
| 4888 | |
| 4889 | case WXK_BACK: |
| 4890 | if ( !ctrlDown ) |
| 4891 | action << wxACTION_TEXT_PREFIX_DEL << wxACTION_TEXT_LEFT; |
| 4892 | break; |
| 4893 | |
| 4894 | // something else |
| 4895 | default: |
| 4896 | // reset the action as it could be already set to one of the |
| 4897 | // prefixes |
| 4898 | action = wxACTION_NONE; |
| 4899 | |
| 4900 | if ( ctrlDown ) |
| 4901 | { |
| 4902 | switch ( keycode ) |
| 4903 | { |
| 4904 | case 'A': |
| 4905 | action = wxACTION_TEXT_REDO; |
| 4906 | break; |
| 4907 | |
| 4908 | case 'C': |
| 4909 | action = wxACTION_TEXT_COPY; |
| 4910 | break; |
| 4911 | |
| 4912 | case 'V': |
| 4913 | action = wxACTION_TEXT_PASTE; |
| 4914 | break; |
| 4915 | |
| 4916 | case 'X': |
| 4917 | action = wxACTION_TEXT_CUT; |
| 4918 | break; |
| 4919 | |
| 4920 | case 'Z': |
| 4921 | action = wxACTION_TEXT_UNDO; |
| 4922 | break; |
| 4923 | } |
| 4924 | } |
| 4925 | } |
| 4926 | |
| 4927 | if ( (action != wxACTION_NONE) && (action != wxACTION_TEXT_PREFIX_SEL) ) |
| 4928 | { |
| 4929 | consumer->PerformAction(action, -1, str); |
| 4930 | |
| 4931 | return true; |
| 4932 | } |
| 4933 | |
| 4934 | return wxStdInputHandler::HandleKey(consumer, event, pressed); |
| 4935 | } |
| 4936 | |
| 4937 | bool wxStdTextCtrlInputHandler::HandleMouse(wxInputConsumer *consumer, |
| 4938 | const wxMouseEvent& event) |
| 4939 | { |
| 4940 | if ( event.LeftDown() ) |
| 4941 | { |
| 4942 | wxASSERT_MSG( !m_winCapture, _T("left button going down twice?") ); |
| 4943 | |
| 4944 | wxTextCtrl *text = wxStaticCast(consumer->GetInputWindow(), wxTextCtrl); |
| 4945 | |
| 4946 | m_winCapture = text; |
| 4947 | m_winCapture->CaptureMouse(); |
| 4948 | |
| 4949 | text->HideCaret(); |
| 4950 | |
| 4951 | wxTextPos pos = HitTest(text, event.GetPosition()); |
| 4952 | if ( pos != -1 ) |
| 4953 | { |
| 4954 | text->PerformAction(wxACTION_TEXT_ANCHOR_SEL, pos); |
| 4955 | } |
| 4956 | } |
| 4957 | else if ( event.LeftDClick() ) |
| 4958 | { |
| 4959 | // select the word the cursor is on |
| 4960 | consumer->PerformAction(wxACTION_TEXT_SEL_WORD); |
| 4961 | } |
| 4962 | else if ( event.LeftUp() ) |
| 4963 | { |
| 4964 | if ( m_winCapture ) |
| 4965 | { |
| 4966 | m_winCapture->ShowCaret(); |
| 4967 | |
| 4968 | m_winCapture->ReleaseMouse(); |
| 4969 | m_winCapture = (wxTextCtrl *)NULL; |
| 4970 | } |
| 4971 | } |
| 4972 | |
| 4973 | return wxStdInputHandler::HandleMouse(consumer, event); |
| 4974 | } |
| 4975 | |
| 4976 | bool wxStdTextCtrlInputHandler::HandleMouseMove(wxInputConsumer *consumer, |
| 4977 | const wxMouseEvent& event) |
| 4978 | { |
| 4979 | if ( m_winCapture ) |
| 4980 | { |
| 4981 | // track it |
| 4982 | wxTextCtrl *text = wxStaticCast(m_winCapture, wxTextCtrl); |
| 4983 | wxTextPos pos = HitTest(text, event.GetPosition()); |
| 4984 | if ( pos != -1 ) |
| 4985 | { |
| 4986 | text->PerformAction(wxACTION_TEXT_EXTEND_SEL, pos); |
| 4987 | } |
| 4988 | } |
| 4989 | |
| 4990 | return wxStdInputHandler::HandleMouseMove(consumer, event); |
| 4991 | } |
| 4992 | |
| 4993 | bool |
| 4994 | wxStdTextCtrlInputHandler::HandleFocus(wxInputConsumer *consumer, |
| 4995 | const wxFocusEvent& event) |
| 4996 | { |
| 4997 | wxTextCtrl *text = wxStaticCast(consumer->GetInputWindow(), wxTextCtrl); |
| 4998 | |
| 4999 | // the selection appearance changes depending on whether we have the focus |
| 5000 | text->RefreshSelection(); |
| 5001 | |
| 5002 | if (event.GetEventType() == wxEVT_SET_FOCUS) |
| 5003 | { |
| 5004 | if (text->GetCaret() && !text->GetCaret()->IsVisible()) |
| 5005 | text->ShowCaret(); |
| 5006 | } |
| 5007 | else |
| 5008 | { |
| 5009 | if (text->GetCaret() && text->GetCaret()->IsVisible()) |
| 5010 | text->HideCaret(); |
| 5011 | } |
| 5012 | |
| 5013 | // never refresh entirely |
| 5014 | return false; |
| 5015 | } |
| 5016 | |
| 5017 | #endif // wxUSE_TEXTCTRL |