| 1 | /////////////////////////////////////////////////////////////////////////////// |
| 2 | // Name: common/textcmn.cpp |
| 3 | // Purpose: implementation of platform-independent functions of wxTextCtrl |
| 4 | // Author: Julian Smart |
| 5 | // Modified by: |
| 6 | // Created: 13.07.99 |
| 7 | // RCS-ID: $Id$ |
| 8 | // Copyright: (c) wxWidgets team |
| 9 | // Licence: wxWindows licence |
| 10 | /////////////////////////////////////////////////////////////////////////////// |
| 11 | |
| 12 | // ============================================================================ |
| 13 | // declarations |
| 14 | // ============================================================================ |
| 15 | |
| 16 | // for compilers that support precompilation, includes "wx.h". |
| 17 | #include "wx/wxprec.h" |
| 18 | |
| 19 | #ifdef __BORLANDC__ |
| 20 | #pragma hdrstop |
| 21 | #endif |
| 22 | |
| 23 | #if wxUSE_TEXTCTRL |
| 24 | |
| 25 | #ifndef WX_PRECOMP |
| 26 | #include "wx/intl.h" |
| 27 | #include "wx/log.h" |
| 28 | #include "wx/textctrl.h" |
| 29 | #endif // WX_PRECOMP |
| 30 | |
| 31 | #include "wx/ffile.h" |
| 32 | |
| 33 | // ---------------------------------------------------------------------------- |
| 34 | // macros |
| 35 | // ---------------------------------------------------------------------------- |
| 36 | |
| 37 | // we don't have any objects of type wxTextCtrlBase in the program, only |
| 38 | // wxTextCtrl, so this cast is safe |
| 39 | #define TEXTCTRL(ptr) ((wxTextCtrl *)(ptr)) |
| 40 | |
| 41 | // ============================================================================ |
| 42 | // implementation |
| 43 | // ============================================================================ |
| 44 | |
| 45 | IMPLEMENT_DYNAMIC_CLASS(wxTextUrlEvent, wxCommandEvent) |
| 46 | |
| 47 | DEFINE_EVENT_TYPE(wxEVT_COMMAND_TEXT_UPDATED) |
| 48 | DEFINE_EVENT_TYPE(wxEVT_COMMAND_TEXT_ENTER) |
| 49 | DEFINE_EVENT_TYPE(wxEVT_COMMAND_TEXT_URL) |
| 50 | DEFINE_EVENT_TYPE(wxEVT_COMMAND_TEXT_MAXLEN) |
| 51 | |
| 52 | // ---------------------------------------------------------------------------- |
| 53 | // style functions - not implemented here |
| 54 | // ---------------------------------------------------------------------------- |
| 55 | |
| 56 | wxTextAttr::wxTextAttr(const wxColour& colText, |
| 57 | const wxColour& colBack, |
| 58 | const wxFont& font, |
| 59 | wxTextAttrAlignment alignment) |
| 60 | : m_colText(colText), m_colBack(colBack), m_font(font), m_textAlignment(alignment) |
| 61 | { |
| 62 | m_flags = 0; |
| 63 | m_leftIndent = 0; |
| 64 | m_leftSubIndent = 0; |
| 65 | m_rightIndent = 0; |
| 66 | if (m_colText.Ok()) m_flags |= wxTEXT_ATTR_TEXT_COLOUR; |
| 67 | if (m_colBack.Ok()) m_flags |= wxTEXT_ATTR_BACKGROUND_COLOUR; |
| 68 | if (m_font.Ok()) m_flags |= wxTEXT_ATTR_FONT; |
| 69 | if (alignment != wxTEXT_ALIGNMENT_DEFAULT) |
| 70 | m_flags |= wxTEXT_ATTR_ALIGNMENT; |
| 71 | } |
| 72 | |
| 73 | void wxTextAttr::Init() |
| 74 | { |
| 75 | m_textAlignment = wxTEXT_ALIGNMENT_DEFAULT; |
| 76 | m_flags = 0; |
| 77 | m_leftIndent = 0; |
| 78 | m_leftSubIndent = 0; |
| 79 | m_rightIndent = 0; |
| 80 | } |
| 81 | |
| 82 | /* static */ |
| 83 | wxTextAttr wxTextAttr::Combine(const wxTextAttr& attr, |
| 84 | const wxTextAttr& attrDef, |
| 85 | const wxTextCtrlBase *text) |
| 86 | { |
| 87 | wxFont font = attr.GetFont(); |
| 88 | if ( !font.Ok() ) |
| 89 | { |
| 90 | font = attrDef.GetFont(); |
| 91 | |
| 92 | if ( text && !font.Ok() ) |
| 93 | font = text->GetFont(); |
| 94 | } |
| 95 | |
| 96 | wxColour colFg = attr.GetTextColour(); |
| 97 | if ( !colFg.Ok() ) |
| 98 | { |
| 99 | colFg = attrDef.GetTextColour(); |
| 100 | |
| 101 | if ( text && !colFg.Ok() ) |
| 102 | colFg = text->GetForegroundColour(); |
| 103 | } |
| 104 | |
| 105 | wxColour colBg = attr.GetBackgroundColour(); |
| 106 | if ( !colBg.Ok() ) |
| 107 | { |
| 108 | colBg = attrDef.GetBackgroundColour(); |
| 109 | |
| 110 | if ( text && !colBg.Ok() ) |
| 111 | colBg = text->GetBackgroundColour(); |
| 112 | } |
| 113 | |
| 114 | wxTextAttr newAttr(colFg, colBg, font); |
| 115 | |
| 116 | if (attr.HasAlignment()) |
| 117 | newAttr.SetAlignment(attr.GetAlignment()); |
| 118 | else if (attrDef.HasAlignment()) |
| 119 | newAttr.SetAlignment(attrDef.GetAlignment()); |
| 120 | |
| 121 | if (attr.HasTabs()) |
| 122 | newAttr.SetTabs(attr.GetTabs()); |
| 123 | else if (attrDef.HasTabs()) |
| 124 | newAttr.SetTabs(attrDef.GetTabs()); |
| 125 | |
| 126 | if (attr.HasLeftIndent()) |
| 127 | newAttr.SetLeftIndent(attr.GetLeftIndent(), attr.GetLeftSubIndent()); |
| 128 | else if (attrDef.HasLeftIndent()) |
| 129 | newAttr.SetLeftIndent(attrDef.GetLeftIndent(), attr.GetLeftSubIndent()); |
| 130 | |
| 131 | if (attr.HasRightIndent()) |
| 132 | newAttr.SetRightIndent(attr.GetRightIndent()); |
| 133 | else if (attrDef.HasRightIndent()) |
| 134 | newAttr.SetRightIndent(attrDef.GetRightIndent()); |
| 135 | |
| 136 | return newAttr; |
| 137 | } |
| 138 | |
| 139 | void wxTextAttr::operator= (const wxTextAttr& attr) |
| 140 | { |
| 141 | m_font = attr.m_font; |
| 142 | m_colText = attr.m_colText; |
| 143 | m_colBack = attr.m_colBack; |
| 144 | m_textAlignment = attr.m_textAlignment; |
| 145 | m_leftIndent = attr.m_leftIndent; |
| 146 | m_leftSubIndent = attr.m_leftSubIndent; |
| 147 | m_rightIndent = attr.m_rightIndent; |
| 148 | m_tabs = attr.m_tabs; |
| 149 | m_flags = attr.m_flags; |
| 150 | } |
| 151 | |
| 152 | |
| 153 | // apply styling to text range |
| 154 | bool wxTextCtrlBase::SetStyle(long WXUNUSED(start), long WXUNUSED(end), |
| 155 | const wxTextAttr& WXUNUSED(style)) |
| 156 | { |
| 157 | // to be implemented in derived TextCtrl classes |
| 158 | return false; |
| 159 | } |
| 160 | |
| 161 | // get the styling at the given position |
| 162 | bool wxTextCtrlBase::GetStyle(long WXUNUSED(position), wxTextAttr& WXUNUSED(style)) |
| 163 | { |
| 164 | // to be implemented in derived TextCtrl classes |
| 165 | return false; |
| 166 | } |
| 167 | |
| 168 | // change default text attributes |
| 169 | bool wxTextCtrlBase::SetDefaultStyle(const wxTextAttr& style) |
| 170 | { |
| 171 | // keep the old attributes if the new style doesn't specify them unless the |
| 172 | // new style is empty - then reset m_defaultStyle (as there is no other way |
| 173 | // to do it) |
| 174 | if ( style.IsDefault() ) |
| 175 | m_defaultStyle = style; |
| 176 | else |
| 177 | m_defaultStyle = wxTextAttr::Combine(style, m_defaultStyle, this); |
| 178 | |
| 179 | return true; |
| 180 | } |
| 181 | |
| 182 | // get default text attributes |
| 183 | const wxTextAttr& wxTextCtrlBase::GetDefaultStyle() const |
| 184 | { |
| 185 | return m_defaultStyle; |
| 186 | } |
| 187 | |
| 188 | // ---------------------------------------------------------------------------- |
| 189 | // file IO functions |
| 190 | // ---------------------------------------------------------------------------- |
| 191 | |
| 192 | bool wxTextCtrlBase::LoadFile(const wxString& filename) |
| 193 | { |
| 194 | #if wxUSE_FFILE |
| 195 | wxFFile file(filename); |
| 196 | if ( file.IsOpened() ) |
| 197 | { |
| 198 | wxString text; |
| 199 | if ( file.ReadAll(&text) ) |
| 200 | { |
| 201 | SetValue(text); |
| 202 | |
| 203 | DiscardEdits(); |
| 204 | |
| 205 | m_filename = filename; |
| 206 | |
| 207 | return true; |
| 208 | } |
| 209 | } |
| 210 | |
| 211 | wxLogError(_("File couldn't be loaded.")); |
| 212 | #endif // wxUSE_FFILE |
| 213 | |
| 214 | return false; |
| 215 | } |
| 216 | |
| 217 | bool wxTextCtrlBase::SaveFile(const wxString& filename) |
| 218 | { |
| 219 | wxString filenameToUse = filename.empty() ? m_filename : filename; |
| 220 | if ( filenameToUse.empty() ) |
| 221 | { |
| 222 | // what kind of message to give? is it an error or a program bug? |
| 223 | wxLogDebug(wxT("Can't save textctrl to file without filename.")); |
| 224 | |
| 225 | return false; |
| 226 | } |
| 227 | |
| 228 | #if wxUSE_FFILE |
| 229 | wxFFile file(filenameToUse, _T("w")); |
| 230 | if ( file.IsOpened() && file.Write(GetValue()) ) |
| 231 | { |
| 232 | // it's not modified any longer |
| 233 | DiscardEdits(); |
| 234 | |
| 235 | // if it worked, save for future calls |
| 236 | m_filename = filenameToUse; |
| 237 | |
| 238 | return true; |
| 239 | } |
| 240 | #endif // wxUSE_FFILE |
| 241 | |
| 242 | wxLogError(_("The text couldn't be saved.")); |
| 243 | |
| 244 | return false; |
| 245 | } |
| 246 | |
| 247 | // ---------------------------------------------------------------------------- |
| 248 | // stream-like insertion operator |
| 249 | // ---------------------------------------------------------------------------- |
| 250 | |
| 251 | wxTextCtrl& wxTextCtrlBase::operator<<(const wxString& s) |
| 252 | { |
| 253 | AppendText(s); |
| 254 | return *TEXTCTRL(this); |
| 255 | } |
| 256 | |
| 257 | wxTextCtrl& wxTextCtrlBase::operator<<(float f) |
| 258 | { |
| 259 | wxString str; |
| 260 | str.Printf(wxT("%.2f"), f); |
| 261 | AppendText(str); |
| 262 | return *TEXTCTRL(this); |
| 263 | } |
| 264 | |
| 265 | wxTextCtrl& wxTextCtrlBase::operator<<(double d) |
| 266 | { |
| 267 | wxString str; |
| 268 | str.Printf(wxT("%.2f"), d); |
| 269 | AppendText(str); |
| 270 | return *TEXTCTRL(this); |
| 271 | } |
| 272 | |
| 273 | wxTextCtrl& wxTextCtrlBase::operator<<(int i) |
| 274 | { |
| 275 | wxString str; |
| 276 | str.Printf(wxT("%d"), i); |
| 277 | AppendText(str); |
| 278 | return *TEXTCTRL(this); |
| 279 | } |
| 280 | |
| 281 | wxTextCtrl& wxTextCtrlBase::operator<<(long i) |
| 282 | { |
| 283 | wxString str; |
| 284 | str.Printf(wxT("%ld"), i); |
| 285 | AppendText(str); |
| 286 | return *TEXTCTRL(this); |
| 287 | } |
| 288 | |
| 289 | wxTextCtrl& wxTextCtrlBase::operator<<(const wxChar c) |
| 290 | { |
| 291 | return operator<<(wxString(c)); |
| 292 | } |
| 293 | |
| 294 | // ---------------------------------------------------------------------------- |
| 295 | // streambuf methods implementation |
| 296 | // ---------------------------------------------------------------------------- |
| 297 | |
| 298 | #if wxHAS_TEXT_WINDOW_STREAM |
| 299 | |
| 300 | int wxTextCtrlBase::overflow(int c) |
| 301 | { |
| 302 | AppendText((wxChar)c); |
| 303 | |
| 304 | // return something different from EOF |
| 305 | return 0; |
| 306 | } |
| 307 | |
| 308 | #endif // wxHAS_TEXT_WINDOW_STREAM |
| 309 | |
| 310 | // ---------------------------------------------------------------------------- |
| 311 | // clipboard stuff |
| 312 | // ---------------------------------------------------------------------------- |
| 313 | |
| 314 | bool wxTextCtrlBase::CanCopy() const |
| 315 | { |
| 316 | // can copy if there's a selection |
| 317 | long from, to; |
| 318 | GetSelection(&from, &to); |
| 319 | return from != to; |
| 320 | } |
| 321 | |
| 322 | bool wxTextCtrlBase::CanCut() const |
| 323 | { |
| 324 | // can cut if there's a selection and if we're not read only |
| 325 | return CanCopy() && IsEditable(); |
| 326 | } |
| 327 | |
| 328 | bool wxTextCtrlBase::CanPaste() const |
| 329 | { |
| 330 | // can paste if we are not read only |
| 331 | return IsEditable(); |
| 332 | } |
| 333 | |
| 334 | // ---------------------------------------------------------------------------- |
| 335 | // emulating key presses |
| 336 | // ---------------------------------------------------------------------------- |
| 337 | |
| 338 | #ifdef __WIN32__ |
| 339 | // the generic version is unused in wxMSW |
| 340 | bool wxTextCtrlBase::EmulateKeyPress(const wxKeyEvent& WXUNUSED(event)) |
| 341 | { |
| 342 | return false; |
| 343 | } |
| 344 | #else // !__WIN32__ |
| 345 | bool wxTextCtrlBase::EmulateKeyPress(const wxKeyEvent& event) |
| 346 | { |
| 347 | wxChar ch = 0; |
| 348 | int keycode = event.GetKeyCode(); |
| 349 | switch ( keycode ) |
| 350 | { |
| 351 | case WXK_NUMPAD0: |
| 352 | case WXK_NUMPAD1: |
| 353 | case WXK_NUMPAD2: |
| 354 | case WXK_NUMPAD3: |
| 355 | case WXK_NUMPAD4: |
| 356 | case WXK_NUMPAD5: |
| 357 | case WXK_NUMPAD6: |
| 358 | case WXK_NUMPAD7: |
| 359 | case WXK_NUMPAD8: |
| 360 | case WXK_NUMPAD9: |
| 361 | ch = (wxChar)(_T('0') + keycode - WXK_NUMPAD0); |
| 362 | break; |
| 363 | |
| 364 | case WXK_MULTIPLY: |
| 365 | case WXK_NUMPAD_MULTIPLY: |
| 366 | ch = _T('*'); |
| 367 | break; |
| 368 | |
| 369 | case WXK_ADD: |
| 370 | case WXK_NUMPAD_ADD: |
| 371 | ch = _T('+'); |
| 372 | break; |
| 373 | |
| 374 | case WXK_SUBTRACT: |
| 375 | case WXK_NUMPAD_SUBTRACT: |
| 376 | ch = _T('-'); |
| 377 | break; |
| 378 | |
| 379 | case WXK_DECIMAL: |
| 380 | case WXK_NUMPAD_DECIMAL: |
| 381 | ch = _T('.'); |
| 382 | break; |
| 383 | |
| 384 | case WXK_DIVIDE: |
| 385 | case WXK_NUMPAD_DIVIDE: |
| 386 | ch = _T('/'); |
| 387 | break; |
| 388 | |
| 389 | case WXK_DELETE: |
| 390 | case WXK_NUMPAD_DELETE: |
| 391 | // delete the character at cursor |
| 392 | { |
| 393 | const long pos = GetInsertionPoint(); |
| 394 | if ( pos < GetLastPosition() ) |
| 395 | Remove(pos, pos + 1); |
| 396 | } |
| 397 | break; |
| 398 | |
| 399 | case WXK_BACK: |
| 400 | // delete the character before the cursor |
| 401 | { |
| 402 | const long pos = GetInsertionPoint(); |
| 403 | if ( pos > 0 ) |
| 404 | Remove(pos - 1, pos); |
| 405 | } |
| 406 | break; |
| 407 | |
| 408 | default: |
| 409 | #if wxUSE_UNICODE |
| 410 | if ( event.GetUnicodeKey() ) |
| 411 | { |
| 412 | ch = event.GetUnicodeKey(); |
| 413 | } |
| 414 | else |
| 415 | #endif |
| 416 | if ( keycode < 256 && keycode >= 0 && wxIsprint(keycode) ) |
| 417 | { |
| 418 | // FIXME this is not going to work for non letters... |
| 419 | if ( !event.ShiftDown() ) |
| 420 | { |
| 421 | keycode = wxTolower(keycode); |
| 422 | } |
| 423 | |
| 424 | ch = (wxChar)keycode; |
| 425 | } |
| 426 | else |
| 427 | { |
| 428 | ch = _T('\0'); |
| 429 | } |
| 430 | } |
| 431 | |
| 432 | if ( ch ) |
| 433 | { |
| 434 | WriteText(ch); |
| 435 | |
| 436 | return true; |
| 437 | } |
| 438 | |
| 439 | return false; |
| 440 | } |
| 441 | #endif // !__WIN32__ |
| 442 | |
| 443 | // ---------------------------------------------------------------------------- |
| 444 | // selection and ranges |
| 445 | // ---------------------------------------------------------------------------- |
| 446 | |
| 447 | void wxTextCtrlBase::SelectAll() |
| 448 | { |
| 449 | SetSelection(0, GetLastPosition()); |
| 450 | } |
| 451 | |
| 452 | wxString wxTextCtrlBase::GetStringSelection() const |
| 453 | { |
| 454 | long from, to; |
| 455 | GetSelection(&from, &to); |
| 456 | |
| 457 | return GetRange(from, to); |
| 458 | } |
| 459 | |
| 460 | wxString wxTextCtrlBase::GetRange(long from, long to) const |
| 461 | { |
| 462 | wxString sel; |
| 463 | if ( from < to ) |
| 464 | { |
| 465 | sel = GetValue().Mid(from, to - from); |
| 466 | } |
| 467 | |
| 468 | return sel; |
| 469 | } |
| 470 | |
| 471 | // do the window-specific processing after processing the update event |
| 472 | void wxTextCtrlBase::DoUpdateWindowUI(wxUpdateUIEvent& event) |
| 473 | { |
| 474 | // call inherited, but skip the wxControl's version, and call directly the |
| 475 | // wxWindow's one instead, because the only reason why we are overriding this |
| 476 | // function is that we want to use SetValue() instead of wxControl::SetLabel() |
| 477 | wxWindowBase::DoUpdateWindowUI(event); |
| 478 | |
| 479 | // update text |
| 480 | if ( event.GetSetText() ) |
| 481 | { |
| 482 | if ( event.GetText() != GetValue() ) |
| 483 | SetValue(event.GetText()); |
| 484 | } |
| 485 | } |
| 486 | |
| 487 | // ---------------------------------------------------------------------------- |
| 488 | // hit testing |
| 489 | // ---------------------------------------------------------------------------- |
| 490 | |
| 491 | wxTextCtrlHitTestResult |
| 492 | wxTextCtrlBase::HitTest(const wxPoint& pt, wxTextCoord *x, wxTextCoord *y) const |
| 493 | { |
| 494 | // implement in terms of the other overload as the native ports typically |
| 495 | // can get the position and not (x, y) pair directly (although wxUniv |
| 496 | // directly gets x and y -- and so overrides this method as well) |
| 497 | long pos; |
| 498 | wxTextCtrlHitTestResult rc = HitTest(pt, &pos); |
| 499 | |
| 500 | if ( rc != wxTE_HT_UNKNOWN ) |
| 501 | { |
| 502 | PositionToXY(pos, x, y); |
| 503 | } |
| 504 | |
| 505 | return rc; |
| 506 | } |
| 507 | |
| 508 | wxTextCtrlHitTestResult |
| 509 | wxTextCtrlBase::HitTest(const wxPoint& WXUNUSED(pt), |
| 510 | long * WXUNUSED(pos)) const |
| 511 | { |
| 512 | // not implemented |
| 513 | return wxTE_HT_UNKNOWN; |
| 514 | } |
| 515 | |
| 516 | #else // !wxUSE_TEXTCTRL |
| 517 | |
| 518 | // define this one even if !wxUSE_TEXTCTRL because it is also used by other |
| 519 | // controls (wxComboBox and wxSpinCtrl) |
| 520 | #include "wx/event.h" |
| 521 | |
| 522 | DEFINE_EVENT_TYPE(wxEVT_COMMAND_TEXT_UPDATED) |
| 523 | |
| 524 | #endif // wxUSE_TEXTCTRL/!wxUSE_TEXTCTRL |