| 1 | ///////////////////////////////////////////////////////////////////////////// |
| 2 | // Name: generic/scrolwin.cpp |
| 3 | // Purpose: wxGenericScrolledWindow implementation |
| 4 | // Author: Julian Smart |
| 5 | // Modified by: Vadim Zeitlin on 31.08.00: wxScrollHelper allows to implement |
| 6 | // Created: 01/02/97 |
| 7 | // RCS-ID: $Id$ |
| 8 | // Copyright: (c) wxWindows team |
| 9 | // Licence: wxWindows license |
| 10 | ///////////////////////////////////////////////////////////////////////////// |
| 11 | |
| 12 | // ============================================================================ |
| 13 | // declarations |
| 14 | // ============================================================================ |
| 15 | |
| 16 | // ---------------------------------------------------------------------------- |
| 17 | // headers |
| 18 | // ---------------------------------------------------------------------------- |
| 19 | |
| 20 | #ifdef __GNUG__ |
| 21 | #pragma implementation "genscrolwin.h" |
| 22 | #endif |
| 23 | |
| 24 | #ifdef __VMS |
| 25 | #define XtDisplay XTDISPLAY |
| 26 | #endif |
| 27 | |
| 28 | // For compilers that support precompilation, includes "wx.h". |
| 29 | #include "wx/wxprec.h" |
| 30 | |
| 31 | #ifdef __BORLANDC__ |
| 32 | #pragma hdrstop |
| 33 | #endif |
| 34 | |
| 35 | #if !defined(__WXGTK__) || defined(__WXUNIVERSAL__) |
| 36 | |
| 37 | #include "wx/utils.h" |
| 38 | #include "wx/dcclient.h" |
| 39 | |
| 40 | #include "wx/scrolwin.h" |
| 41 | #include "wx/panel.h" |
| 42 | #include "wx/timer.h" |
| 43 | |
| 44 | #ifdef __WXMSW__ |
| 45 | #include <windows.h> // for DLGC_WANTARROWS |
| 46 | #endif |
| 47 | |
| 48 | #ifdef __WXMOTIF__ |
| 49 | // For wxRETAINED implementation |
| 50 | #ifdef __VMS__ //VMS's Xm.h is not (yet) compatible with C++ |
| 51 | //This code switches off the compiler warnings |
| 52 | # pragma message disable nosimpint |
| 53 | #endif |
| 54 | #include <Xm/Xm.h> |
| 55 | #ifdef __VMS__ |
| 56 | # pragma message enable nosimpint |
| 57 | #endif |
| 58 | #endif |
| 59 | |
| 60 | IMPLEMENT_CLASS(wxScrolledWindow, wxGenericScrolledWindow) |
| 61 | |
| 62 | // ---------------------------------------------------------------------------- |
| 63 | // wxScrollHelperEvtHandler: intercept the events from the window and forward |
| 64 | // them to wxScrollHelper |
| 65 | // ---------------------------------------------------------------------------- |
| 66 | |
| 67 | class WXDLLEXPORT wxScrollHelperEvtHandler : public wxEvtHandler |
| 68 | { |
| 69 | public: |
| 70 | wxScrollHelperEvtHandler(wxScrollHelper *scrollHelper) |
| 71 | { |
| 72 | m_scrollHelper = scrollHelper; |
| 73 | } |
| 74 | |
| 75 | virtual bool ProcessEvent(wxEvent& event); |
| 76 | |
| 77 | void ResetDrawnFlag() { m_hasDrawnWindow = FALSE; } |
| 78 | |
| 79 | private: |
| 80 | wxScrollHelper *m_scrollHelper; |
| 81 | |
| 82 | bool m_hasDrawnWindow; |
| 83 | }; |
| 84 | |
| 85 | // ---------------------------------------------------------------------------- |
| 86 | // wxAutoScrollTimer: the timer used to generate a stream of scroll events when |
| 87 | // a captured mouse is held outside the window |
| 88 | // ---------------------------------------------------------------------------- |
| 89 | |
| 90 | class wxAutoScrollTimer : public wxTimer |
| 91 | { |
| 92 | public: |
| 93 | wxAutoScrollTimer(wxWindow *winToScroll, wxScrollHelper *scroll, |
| 94 | wxEventType eventTypeToSend, |
| 95 | int pos, int orient); |
| 96 | |
| 97 | virtual void Notify(); |
| 98 | |
| 99 | private: |
| 100 | wxWindow *m_win; |
| 101 | wxScrollHelper *m_scrollHelper; |
| 102 | wxEventType m_eventType; |
| 103 | int m_pos, |
| 104 | m_orient; |
| 105 | }; |
| 106 | |
| 107 | // ============================================================================ |
| 108 | // implementation |
| 109 | // ============================================================================ |
| 110 | |
| 111 | // ---------------------------------------------------------------------------- |
| 112 | // wxAutoScrollTimer |
| 113 | // ---------------------------------------------------------------------------- |
| 114 | |
| 115 | wxAutoScrollTimer::wxAutoScrollTimer(wxWindow *winToScroll, |
| 116 | wxScrollHelper *scroll, |
| 117 | wxEventType eventTypeToSend, |
| 118 | int pos, int orient) |
| 119 | { |
| 120 | m_win = winToScroll; |
| 121 | m_scrollHelper = scroll; |
| 122 | m_eventType = eventTypeToSend; |
| 123 | m_pos = pos; |
| 124 | m_orient = orient; |
| 125 | } |
| 126 | |
| 127 | void wxAutoScrollTimer::Notify() |
| 128 | { |
| 129 | // only do all this as long as the window is capturing the mouse |
| 130 | if ( wxWindow::GetCapture() != m_win ) |
| 131 | { |
| 132 | Stop(); |
| 133 | } |
| 134 | else // we still capture the mouse, continue generating events |
| 135 | { |
| 136 | // first scroll the window if we are allowed to do it |
| 137 | wxScrollWinEvent event1(m_eventType, m_pos, m_orient); |
| 138 | event1.SetEventObject(m_win); |
| 139 | if ( m_scrollHelper->SendAutoScrollEvents(event1) && |
| 140 | m_win->GetEventHandler()->ProcessEvent(event1) ) |
| 141 | { |
| 142 | // and then send a pseudo mouse-move event to refresh the selection |
| 143 | wxMouseEvent event2(wxEVT_MOTION); |
| 144 | wxGetMousePosition(&event2.m_x, &event2.m_y); |
| 145 | |
| 146 | // the mouse event coordinates should be client, not screen as |
| 147 | // returned by wxGetMousePosition |
| 148 | wxWindow *parentTop = m_win; |
| 149 | while ( parentTop->GetParent() ) |
| 150 | parentTop = parentTop->GetParent(); |
| 151 | wxPoint ptOrig = parentTop->GetPosition(); |
| 152 | event2.m_x -= ptOrig.x; |
| 153 | event2.m_y -= ptOrig.y; |
| 154 | |
| 155 | event2.SetEventObject(m_win); |
| 156 | |
| 157 | // FIXME: we don't fill in the other members - ok? |
| 158 | |
| 159 | m_win->GetEventHandler()->ProcessEvent(event2); |
| 160 | } |
| 161 | else // can't scroll further, stop |
| 162 | { |
| 163 | Stop(); |
| 164 | } |
| 165 | } |
| 166 | } |
| 167 | |
| 168 | // ---------------------------------------------------------------------------- |
| 169 | // wxScrollHelperEvtHandler |
| 170 | // ---------------------------------------------------------------------------- |
| 171 | |
| 172 | bool wxScrollHelperEvtHandler::ProcessEvent(wxEvent& event) |
| 173 | { |
| 174 | wxEventType evType = event.GetEventType(); |
| 175 | |
| 176 | // the explanation of wxEVT_PAINT processing hack: for historic reasons |
| 177 | // there are 2 ways to process this event in classes deriving from |
| 178 | // wxScrolledWindow. The user code may |
| 179 | // |
| 180 | // 1. override wxScrolledWindow::OnDraw(dc) |
| 181 | // 2. define its own OnPaint() handler |
| 182 | // |
| 183 | // In addition, in wxUniversal wxWindow defines OnPaint() itself and |
| 184 | // always processes the draw event, so we can't just try the window |
| 185 | // OnPaint() first and call our HandleOnPaint() if it doesn't process it |
| 186 | // (the latter would never be called in wxUniversal). |
| 187 | // |
| 188 | // So the solution is to have a flag telling us whether the user code drew |
| 189 | // anything in the window. We set it to true here but reset it to false in |
| 190 | // wxScrolledWindow::OnPaint() handler (which wouldn't be called if the |
| 191 | // user code defined OnPaint() in the derived class) |
| 192 | m_hasDrawnWindow = TRUE; |
| 193 | |
| 194 | // pass it on to the real handler |
| 195 | bool processed = wxEvtHandler::ProcessEvent(event); |
| 196 | |
| 197 | // always process the size events ourselves, even if the user code handles |
| 198 | // them as well, as we need to AdjustScrollbars() |
| 199 | // |
| 200 | // NB: it is important to do it after processing the event in the normal |
| 201 | // way as HandleOnSize() may generate a wxEVT_SIZE itself if the |
| 202 | // scrollbar[s] (dis)appear and it should be seen by the user code |
| 203 | // after this one |
| 204 | if ( evType == wxEVT_SIZE ) |
| 205 | { |
| 206 | m_scrollHelper->HandleOnSize((wxSizeEvent &)event); |
| 207 | |
| 208 | return TRUE; |
| 209 | } |
| 210 | |
| 211 | if ( processed ) |
| 212 | { |
| 213 | // normally, nothing more to do here - except if it was a paint event |
| 214 | // which wasn't really processed, then we'll try to call our |
| 215 | // OnDraw() below (from HandleOnPaint) |
| 216 | if ( m_hasDrawnWindow ) |
| 217 | { |
| 218 | return TRUE; |
| 219 | } |
| 220 | } |
| 221 | |
| 222 | // reset the skipped flag to FALSE as it might have been set to TRUE in |
| 223 | // ProcessEvent() above |
| 224 | event.Skip(FALSE); |
| 225 | |
| 226 | if ( evType == wxEVT_PAINT ) |
| 227 | { |
| 228 | m_scrollHelper->HandleOnPaint((wxPaintEvent &)event); |
| 229 | return TRUE; |
| 230 | } |
| 231 | |
| 232 | if ( evType == wxEVT_SCROLLWIN_TOP || |
| 233 | evType == wxEVT_SCROLLWIN_BOTTOM || |
| 234 | evType == wxEVT_SCROLLWIN_LINEUP || |
| 235 | evType == wxEVT_SCROLLWIN_LINEDOWN || |
| 236 | evType == wxEVT_SCROLLWIN_PAGEUP || |
| 237 | evType == wxEVT_SCROLLWIN_PAGEDOWN || |
| 238 | evType == wxEVT_SCROLLWIN_THUMBTRACK || |
| 239 | evType == wxEVT_SCROLLWIN_THUMBRELEASE ) |
| 240 | { |
| 241 | m_scrollHelper->HandleOnScroll((wxScrollWinEvent &)event); |
| 242 | return !event.GetSkipped(); |
| 243 | } |
| 244 | |
| 245 | if ( evType == wxEVT_ENTER_WINDOW ) |
| 246 | { |
| 247 | m_scrollHelper->HandleOnMouseEnter((wxMouseEvent &)event); |
| 248 | } |
| 249 | else if ( evType == wxEVT_LEAVE_WINDOW ) |
| 250 | { |
| 251 | m_scrollHelper->HandleOnMouseLeave((wxMouseEvent &)event); |
| 252 | } |
| 253 | #if wxUSE_MOUSEWHEEL |
| 254 | else if ( evType == wxEVT_MOUSEWHEEL ) |
| 255 | { |
| 256 | m_scrollHelper->HandleOnMouseWheel((wxMouseEvent &)event); |
| 257 | } |
| 258 | #endif // wxUSE_MOUSEWHEEL |
| 259 | else if ( evType == wxEVT_CHAR ) |
| 260 | { |
| 261 | m_scrollHelper->HandleOnChar((wxKeyEvent &)event); |
| 262 | return !event.GetSkipped(); |
| 263 | } |
| 264 | |
| 265 | return FALSE; |
| 266 | } |
| 267 | |
| 268 | // ---------------------------------------------------------------------------- |
| 269 | // wxScrollHelper construction |
| 270 | // ---------------------------------------------------------------------------- |
| 271 | |
| 272 | wxScrollHelper::wxScrollHelper(wxWindow *win) |
| 273 | { |
| 274 | m_xScrollPixelsPerLine = |
| 275 | m_yScrollPixelsPerLine = |
| 276 | m_xScrollPosition = |
| 277 | m_yScrollPosition = |
| 278 | m_xScrollLines = |
| 279 | m_yScrollLines = |
| 280 | m_xScrollLinesPerPage = |
| 281 | m_yScrollLinesPerPage = 0; |
| 282 | |
| 283 | m_xScrollingEnabled = |
| 284 | m_yScrollingEnabled = TRUE; |
| 285 | |
| 286 | m_scaleX = |
| 287 | m_scaleY = 1.0; |
| 288 | #if wxUSE_MOUSEWHEEL |
| 289 | m_wheelRotation = 0; |
| 290 | #endif |
| 291 | |
| 292 | m_win = |
| 293 | m_targetWindow = (wxWindow *)NULL; |
| 294 | |
| 295 | m_timerAutoScroll = (wxTimer *)NULL; |
| 296 | |
| 297 | m_handler = NULL; |
| 298 | |
| 299 | if ( win ) |
| 300 | SetWindow(win); |
| 301 | } |
| 302 | |
| 303 | wxScrollHelper::~wxScrollHelper() |
| 304 | { |
| 305 | StopAutoScrolling(); |
| 306 | |
| 307 | DeleteEvtHandler(); |
| 308 | } |
| 309 | |
| 310 | // ---------------------------------------------------------------------------- |
| 311 | // setting scrolling parameters |
| 312 | // ---------------------------------------------------------------------------- |
| 313 | |
| 314 | void wxScrollHelper::SetScrollbars(int pixelsPerUnitX, |
| 315 | int pixelsPerUnitY, |
| 316 | int noUnitsX, |
| 317 | int noUnitsY, |
| 318 | int xPos, |
| 319 | int yPos, |
| 320 | bool noRefresh) |
| 321 | { |
| 322 | int xpos, ypos; |
| 323 | |
| 324 | CalcUnscrolledPosition(xPos, yPos, &xpos, &ypos); |
| 325 | bool do_refresh = |
| 326 | ( |
| 327 | (noUnitsX != 0 && m_xScrollLines == 0) || |
| 328 | (noUnitsX < m_xScrollLines && xpos > pixelsPerUnitX*noUnitsX) || |
| 329 | |
| 330 | (noUnitsY != 0 && m_yScrollLines == 0) || |
| 331 | (noUnitsY < m_yScrollLines && ypos > pixelsPerUnitY*noUnitsY) || |
| 332 | (xPos != m_xScrollPosition) || |
| 333 | (yPos != m_yScrollPosition) |
| 334 | ); |
| 335 | |
| 336 | m_xScrollPixelsPerLine = pixelsPerUnitX; |
| 337 | m_yScrollPixelsPerLine = pixelsPerUnitY; |
| 338 | m_xScrollPosition = xPos; |
| 339 | m_yScrollPosition = yPos; |
| 340 | m_xScrollLines = noUnitsX; |
| 341 | m_yScrollLines = noUnitsY; |
| 342 | |
| 343 | #ifdef __WXMOTIF__ |
| 344 | // Sorry, some Motif-specific code to implement a backing pixmap |
| 345 | // for the wxRETAINED style. Implementing a backing store can't |
| 346 | // be entirely generic because it relies on the wxWindowDC implementation |
| 347 | // to duplicate X drawing calls for the backing pixmap. |
| 348 | |
| 349 | if ( m_targetWindow->GetWindowStyle() & wxRETAINED ) |
| 350 | { |
| 351 | Display* dpy = XtDisplay((Widget)m_targetWindow->GetMainWidget()); |
| 352 | |
| 353 | int totalPixelWidth = m_xScrollLines * m_xScrollPixelsPerLine; |
| 354 | int totalPixelHeight = m_yScrollLines * m_yScrollPixelsPerLine; |
| 355 | if (m_targetWindow->GetBackingPixmap() && |
| 356 | !((m_targetWindow->GetPixmapWidth() == totalPixelWidth) && |
| 357 | (m_targetWindow->GetPixmapHeight() == totalPixelHeight))) |
| 358 | { |
| 359 | XFreePixmap (dpy, (Pixmap) m_targetWindow->GetBackingPixmap()); |
| 360 | m_targetWindow->SetBackingPixmap((WXPixmap) 0); |
| 361 | } |
| 362 | |
| 363 | if (!m_targetWindow->GetBackingPixmap() && |
| 364 | (noUnitsX != 0) && (noUnitsY != 0)) |
| 365 | { |
| 366 | int depth = wxDisplayDepth(); |
| 367 | m_targetWindow->SetPixmapWidth(totalPixelWidth); |
| 368 | m_targetWindow->SetPixmapHeight(totalPixelHeight); |
| 369 | m_targetWindow->SetBackingPixmap((WXPixmap) XCreatePixmap (dpy, RootWindow (dpy, DefaultScreen (dpy)), |
| 370 | m_targetWindow->GetPixmapWidth(), m_targetWindow->GetPixmapHeight(), depth)); |
| 371 | } |
| 372 | |
| 373 | } |
| 374 | #endif // Motif |
| 375 | |
| 376 | AdjustScrollbars(); |
| 377 | |
| 378 | if (do_refresh && !noRefresh) |
| 379 | m_targetWindow->Refresh(TRUE, GetRect()); |
| 380 | |
| 381 | #ifdef __WXMAC__ |
| 382 | m_targetWindow->MacUpdateImmediately() ; |
| 383 | #endif |
| 384 | } |
| 385 | |
| 386 | // ---------------------------------------------------------------------------- |
| 387 | // target window handling |
| 388 | // ---------------------------------------------------------------------------- |
| 389 | |
| 390 | void wxScrollHelper::DeleteEvtHandler() |
| 391 | { |
| 392 | // FIXME: we should search for m_handler in the handler list |
| 393 | if ( m_targetWindow ) |
| 394 | { |
| 395 | m_targetWindow->PopEventHandler(TRUE /* Delete old event handler*/); |
| 396 | } |
| 397 | } |
| 398 | |
| 399 | void wxScrollHelper::SetWindow(wxWindow *win) |
| 400 | { |
| 401 | wxCHECK_RET( win, _T("wxScrollHelper needs a window to scroll") ); |
| 402 | |
| 403 | m_win = win; |
| 404 | |
| 405 | DoSetTargetWindow(win); |
| 406 | } |
| 407 | |
| 408 | void wxScrollHelper::DoSetTargetWindow(wxWindow *target) |
| 409 | { |
| 410 | m_targetWindow = target; |
| 411 | |
| 412 | // install the event handler which will intercept the events we're |
| 413 | // interested in |
| 414 | m_handler = new wxScrollHelperEvtHandler(this); |
| 415 | m_targetWindow->PushEventHandler(m_handler); |
| 416 | } |
| 417 | |
| 418 | void wxScrollHelper::SetTargetWindow( wxWindow *target ) |
| 419 | { |
| 420 | wxCHECK_RET( target, wxT("target window must not be NULL") ); |
| 421 | |
| 422 | if ( target == m_targetWindow ) |
| 423 | return; |
| 424 | |
| 425 | DeleteEvtHandler(); |
| 426 | |
| 427 | DoSetTargetWindow(target); |
| 428 | } |
| 429 | |
| 430 | wxWindow *wxScrollHelper::GetTargetWindow() const |
| 431 | { |
| 432 | return m_targetWindow; |
| 433 | } |
| 434 | |
| 435 | // ---------------------------------------------------------------------------- |
| 436 | // scrolling implementation itself |
| 437 | // ---------------------------------------------------------------------------- |
| 438 | |
| 439 | void wxScrollHelper::HandleOnScroll(wxScrollWinEvent& event) |
| 440 | { |
| 441 | int nScrollInc = CalcScrollInc(event); |
| 442 | if ( nScrollInc == 0 ) |
| 443 | { |
| 444 | // can't scroll further |
| 445 | event.Skip(); |
| 446 | |
| 447 | return; |
| 448 | } |
| 449 | |
| 450 | int orient = event.GetOrientation(); |
| 451 | if (orient == wxHORIZONTAL) |
| 452 | { |
| 453 | m_xScrollPosition += nScrollInc; |
| 454 | m_targetWindow->SetScrollPos(wxHORIZONTAL, m_xScrollPosition); |
| 455 | } |
| 456 | else |
| 457 | { |
| 458 | m_yScrollPosition += nScrollInc; |
| 459 | m_targetWindow->SetScrollPos(wxVERTICAL, m_yScrollPosition); |
| 460 | } |
| 461 | |
| 462 | bool needsRefresh = FALSE; |
| 463 | int dx = 0, |
| 464 | dy = 0; |
| 465 | if (orient == wxHORIZONTAL) |
| 466 | { |
| 467 | if ( m_xScrollingEnabled ) |
| 468 | { |
| 469 | dx = -m_xScrollPixelsPerLine * nScrollInc; |
| 470 | } |
| 471 | else |
| 472 | { |
| 473 | needsRefresh = TRUE; |
| 474 | } |
| 475 | } |
| 476 | else |
| 477 | { |
| 478 | if ( m_yScrollingEnabled ) |
| 479 | { |
| 480 | dy = -m_yScrollPixelsPerLine * nScrollInc; |
| 481 | } |
| 482 | else |
| 483 | { |
| 484 | needsRefresh = TRUE; |
| 485 | } |
| 486 | } |
| 487 | |
| 488 | if ( needsRefresh ) |
| 489 | { |
| 490 | m_targetWindow->Refresh(TRUE, GetRect()); |
| 491 | } |
| 492 | else |
| 493 | { |
| 494 | m_targetWindow->ScrollWindow(dx, dy, GetRect()); |
| 495 | } |
| 496 | |
| 497 | #ifdef __WXMAC__ |
| 498 | m_targetWindow->MacUpdateImmediately() ; |
| 499 | #endif |
| 500 | } |
| 501 | |
| 502 | int wxScrollHelper::CalcScrollInc(wxScrollWinEvent& event) |
| 503 | { |
| 504 | int pos = event.GetPosition(); |
| 505 | int orient = event.GetOrientation(); |
| 506 | |
| 507 | int nScrollInc = 0; |
| 508 | if (event.GetEventType() == wxEVT_SCROLLWIN_TOP) |
| 509 | { |
| 510 | if (orient == wxHORIZONTAL) |
| 511 | nScrollInc = - m_xScrollPosition; |
| 512 | else |
| 513 | nScrollInc = - m_yScrollPosition; |
| 514 | } else |
| 515 | if (event.GetEventType() == wxEVT_SCROLLWIN_BOTTOM) |
| 516 | { |
| 517 | if (orient == wxHORIZONTAL) |
| 518 | nScrollInc = m_xScrollLines - m_xScrollPosition; |
| 519 | else |
| 520 | nScrollInc = m_yScrollLines - m_yScrollPosition; |
| 521 | } else |
| 522 | if (event.GetEventType() == wxEVT_SCROLLWIN_LINEUP) |
| 523 | { |
| 524 | nScrollInc = -1; |
| 525 | } else |
| 526 | if (event.GetEventType() == wxEVT_SCROLLWIN_LINEDOWN) |
| 527 | { |
| 528 | nScrollInc = 1; |
| 529 | } else |
| 530 | if (event.GetEventType() == wxEVT_SCROLLWIN_PAGEUP) |
| 531 | { |
| 532 | if (orient == wxHORIZONTAL) |
| 533 | nScrollInc = -GetScrollPageSize(wxHORIZONTAL); |
| 534 | else |
| 535 | nScrollInc = -GetScrollPageSize(wxVERTICAL); |
| 536 | } else |
| 537 | if (event.GetEventType() == wxEVT_SCROLLWIN_PAGEDOWN) |
| 538 | { |
| 539 | if (orient == wxHORIZONTAL) |
| 540 | nScrollInc = GetScrollPageSize(wxHORIZONTAL); |
| 541 | else |
| 542 | nScrollInc = GetScrollPageSize(wxVERTICAL); |
| 543 | } else |
| 544 | if ((event.GetEventType() == wxEVT_SCROLLWIN_THUMBTRACK) || |
| 545 | (event.GetEventType() == wxEVT_SCROLLWIN_THUMBRELEASE)) |
| 546 | { |
| 547 | if (orient == wxHORIZONTAL) |
| 548 | nScrollInc = pos - m_xScrollPosition; |
| 549 | else |
| 550 | nScrollInc = pos - m_yScrollPosition; |
| 551 | } |
| 552 | |
| 553 | if (orient == wxHORIZONTAL) |
| 554 | { |
| 555 | if (m_xScrollPixelsPerLine > 0) |
| 556 | { |
| 557 | int w, h; |
| 558 | GetTargetSize(&w, &h); |
| 559 | |
| 560 | int nMaxWidth = m_xScrollLines*m_xScrollPixelsPerLine; |
| 561 | int noPositions = (int) ( ((nMaxWidth - w)/(double)m_xScrollPixelsPerLine) + 0.5 ); |
| 562 | if (noPositions < 0) |
| 563 | noPositions = 0; |
| 564 | |
| 565 | if ( (m_xScrollPosition + nScrollInc) < 0 ) |
| 566 | nScrollInc = -m_xScrollPosition; // As -ve as we can go |
| 567 | else if ( (m_xScrollPosition + nScrollInc) > noPositions ) |
| 568 | nScrollInc = noPositions - m_xScrollPosition; // As +ve as we can go |
| 569 | } |
| 570 | else |
| 571 | m_targetWindow->Refresh(TRUE, GetRect()); |
| 572 | } |
| 573 | else |
| 574 | { |
| 575 | if (m_yScrollPixelsPerLine > 0) |
| 576 | { |
| 577 | int w, h; |
| 578 | GetTargetSize(&w, &h); |
| 579 | |
| 580 | int nMaxHeight = m_yScrollLines*m_yScrollPixelsPerLine; |
| 581 | int noPositions = (int) ( ((nMaxHeight - h)/(double)m_yScrollPixelsPerLine) + 0.5 ); |
| 582 | if (noPositions < 0) |
| 583 | noPositions = 0; |
| 584 | |
| 585 | if ( (m_yScrollPosition + nScrollInc) < 0 ) |
| 586 | nScrollInc = -m_yScrollPosition; // As -ve as we can go |
| 587 | else if ( (m_yScrollPosition + nScrollInc) > noPositions ) |
| 588 | nScrollInc = noPositions - m_yScrollPosition; // As +ve as we can go |
| 589 | } |
| 590 | else |
| 591 | m_targetWindow->Refresh(TRUE, GetRect()); |
| 592 | } |
| 593 | |
| 594 | return nScrollInc; |
| 595 | } |
| 596 | |
| 597 | // Adjust the scrollbars - new version. |
| 598 | void wxScrollHelper::AdjustScrollbars() |
| 599 | { |
| 600 | #ifdef __WXMAC__ |
| 601 | m_targetWindow->MacUpdateImmediately(); |
| 602 | #endif |
| 603 | |
| 604 | int w, h; |
| 605 | GetTargetSize(&w, &h); |
| 606 | |
| 607 | int oldXScroll = m_xScrollPosition; |
| 608 | int oldYScroll = m_yScrollPosition; |
| 609 | |
| 610 | if (m_xScrollLines > 0) |
| 611 | { |
| 612 | // Calculate page size i.e. number of scroll units you get on the |
| 613 | // current client window |
| 614 | int noPagePositions = (int) ( (w/(double)m_xScrollPixelsPerLine) + 0.5 ); |
| 615 | if (noPagePositions < 1) noPagePositions = 1; |
| 616 | if ( noPagePositions > m_xScrollLines ) |
| 617 | noPagePositions = m_xScrollLines; |
| 618 | |
| 619 | // Correct position if greater than extent of canvas minus |
| 620 | // the visible portion of it or if below zero |
| 621 | m_xScrollPosition = wxMin( m_xScrollLines-noPagePositions, m_xScrollPosition); |
| 622 | m_xScrollPosition = wxMax( 0, m_xScrollPosition ); |
| 623 | |
| 624 | m_targetWindow->SetScrollbar(wxHORIZONTAL, m_xScrollPosition, noPagePositions, m_xScrollLines); |
| 625 | // The amount by which we scroll when paging |
| 626 | SetScrollPageSize(wxHORIZONTAL, noPagePositions); |
| 627 | } |
| 628 | else |
| 629 | { |
| 630 | m_xScrollPosition = 0; |
| 631 | m_targetWindow->SetScrollbar (wxHORIZONTAL, 0, 0, 0, FALSE); |
| 632 | } |
| 633 | |
| 634 | if (m_yScrollLines > 0) |
| 635 | { |
| 636 | // Calculate page size i.e. number of scroll units you get on the |
| 637 | // current client window |
| 638 | int noPagePositions = (int) ( (h/(double)m_yScrollPixelsPerLine) + 0.5 ); |
| 639 | if (noPagePositions < 1) noPagePositions = 1; |
| 640 | if ( noPagePositions > m_yScrollLines ) |
| 641 | noPagePositions = m_yScrollLines; |
| 642 | |
| 643 | // Correct position if greater than extent of canvas minus |
| 644 | // the visible portion of it or if below zero |
| 645 | m_yScrollPosition = wxMin( m_yScrollLines-noPagePositions, m_yScrollPosition ); |
| 646 | m_yScrollPosition = wxMax( 0, m_yScrollPosition ); |
| 647 | |
| 648 | m_targetWindow->SetScrollbar(wxVERTICAL, m_yScrollPosition, noPagePositions, m_yScrollLines); |
| 649 | // The amount by which we scroll when paging |
| 650 | SetScrollPageSize(wxVERTICAL, noPagePositions); |
| 651 | } |
| 652 | else |
| 653 | { |
| 654 | m_yScrollPosition = 0; |
| 655 | m_targetWindow->SetScrollbar (wxVERTICAL, 0, 0, 0, FALSE); |
| 656 | } |
| 657 | |
| 658 | if (oldXScroll != m_xScrollPosition) |
| 659 | { |
| 660 | if (m_xScrollingEnabled) |
| 661 | m_targetWindow->ScrollWindow( m_xScrollPixelsPerLine * (oldXScroll-m_xScrollPosition), 0, |
| 662 | GetRect() ); |
| 663 | else |
| 664 | m_targetWindow->Refresh(TRUE, GetRect()); |
| 665 | } |
| 666 | |
| 667 | if (oldYScroll != m_yScrollPosition) |
| 668 | { |
| 669 | if (m_yScrollingEnabled) |
| 670 | m_targetWindow->ScrollWindow( 0, m_yScrollPixelsPerLine * (oldYScroll-m_yScrollPosition), |
| 671 | GetRect() ); |
| 672 | else |
| 673 | m_targetWindow->Refresh(TRUE, GetRect()); |
| 674 | } |
| 675 | |
| 676 | #ifdef __WXMAC__ |
| 677 | m_targetWindow->MacUpdateImmediately(); |
| 678 | #endif |
| 679 | } |
| 680 | |
| 681 | void wxScrollHelper::DoPrepareDC(wxDC& dc) |
| 682 | { |
| 683 | wxPoint pt = dc.GetDeviceOrigin(); |
| 684 | dc.SetDeviceOrigin( pt.x - m_xScrollPosition * m_xScrollPixelsPerLine, |
| 685 | pt.y - m_yScrollPosition * m_yScrollPixelsPerLine ); |
| 686 | dc.SetUserScale( m_scaleX, m_scaleY ); |
| 687 | } |
| 688 | |
| 689 | void wxScrollHelper::GetScrollPixelsPerUnit (int *x_unit, int *y_unit) const |
| 690 | { |
| 691 | if ( x_unit ) |
| 692 | *x_unit = m_xScrollPixelsPerLine; |
| 693 | if ( y_unit ) |
| 694 | *y_unit = m_yScrollPixelsPerLine; |
| 695 | } |
| 696 | |
| 697 | int wxScrollHelper::GetScrollPageSize(int orient) const |
| 698 | { |
| 699 | if ( orient == wxHORIZONTAL ) |
| 700 | return m_xScrollLinesPerPage; |
| 701 | else |
| 702 | return m_yScrollLinesPerPage; |
| 703 | } |
| 704 | |
| 705 | void wxScrollHelper::SetScrollPageSize(int orient, int pageSize) |
| 706 | { |
| 707 | if ( orient == wxHORIZONTAL ) |
| 708 | m_xScrollLinesPerPage = pageSize; |
| 709 | else |
| 710 | m_yScrollLinesPerPage = pageSize; |
| 711 | } |
| 712 | |
| 713 | /* |
| 714 | * Scroll to given position (scroll position, not pixel position) |
| 715 | */ |
| 716 | void wxScrollHelper::Scroll( int x_pos, int y_pos ) |
| 717 | { |
| 718 | if (!m_targetWindow) |
| 719 | return; |
| 720 | |
| 721 | if (((x_pos == -1) || (x_pos == m_xScrollPosition)) && |
| 722 | ((y_pos == -1) || (y_pos == m_yScrollPosition))) return; |
| 723 | |
| 724 | #ifdef __WXMAC__ |
| 725 | m_targetWindow->MacUpdateImmediately(); |
| 726 | #endif |
| 727 | |
| 728 | int w, h; |
| 729 | GetTargetSize(&w, &h); |
| 730 | |
| 731 | if ((x_pos != -1) && (m_xScrollPixelsPerLine)) |
| 732 | { |
| 733 | int old_x = m_xScrollPosition; |
| 734 | m_xScrollPosition = x_pos; |
| 735 | |
| 736 | // Calculate page size i.e. number of scroll units you get on the |
| 737 | // current client window |
| 738 | int noPagePositions = (int) ( (w/(double)m_xScrollPixelsPerLine) + 0.5 ); |
| 739 | if (noPagePositions < 1) noPagePositions = 1; |
| 740 | |
| 741 | // Correct position if greater than extent of canvas minus |
| 742 | // the visible portion of it or if below zero |
| 743 | m_xScrollPosition = wxMin( m_xScrollLines-noPagePositions, m_xScrollPosition ); |
| 744 | m_xScrollPosition = wxMax( 0, m_xScrollPosition ); |
| 745 | |
| 746 | if (old_x != m_xScrollPosition) { |
| 747 | m_targetWindow->SetScrollPos( wxHORIZONTAL, m_xScrollPosition ); |
| 748 | m_targetWindow->ScrollWindow( (old_x-m_xScrollPosition)*m_xScrollPixelsPerLine, 0, |
| 749 | GetRect() ); |
| 750 | } |
| 751 | } |
| 752 | if ((y_pos != -1) && (m_yScrollPixelsPerLine)) |
| 753 | { |
| 754 | int old_y = m_yScrollPosition; |
| 755 | m_yScrollPosition = y_pos; |
| 756 | |
| 757 | // Calculate page size i.e. number of scroll units you get on the |
| 758 | // current client window |
| 759 | int noPagePositions = (int) ( (h/(double)m_yScrollPixelsPerLine) + 0.5 ); |
| 760 | if (noPagePositions < 1) noPagePositions = 1; |
| 761 | |
| 762 | // Correct position if greater than extent of canvas minus |
| 763 | // the visible portion of it or if below zero |
| 764 | m_yScrollPosition = wxMin( m_yScrollLines-noPagePositions, m_yScrollPosition ); |
| 765 | m_yScrollPosition = wxMax( 0, m_yScrollPosition ); |
| 766 | |
| 767 | if (old_y != m_yScrollPosition) { |
| 768 | m_targetWindow->SetScrollPos( wxVERTICAL, m_yScrollPosition ); |
| 769 | m_targetWindow->ScrollWindow( 0, (old_y-m_yScrollPosition)*m_yScrollPixelsPerLine, |
| 770 | GetRect() ); |
| 771 | } |
| 772 | } |
| 773 | |
| 774 | #ifdef __WXMAC__ |
| 775 | m_targetWindow->MacUpdateImmediately(); |
| 776 | #endif |
| 777 | |
| 778 | } |
| 779 | |
| 780 | void wxScrollHelper::EnableScrolling (bool x_scroll, bool y_scroll) |
| 781 | { |
| 782 | m_xScrollingEnabled = x_scroll; |
| 783 | m_yScrollingEnabled = y_scroll; |
| 784 | } |
| 785 | |
| 786 | void wxScrollHelper::GetVirtualSize (int *x, int *y) const |
| 787 | { |
| 788 | if ( x ) |
| 789 | *x = m_xScrollPixelsPerLine * m_xScrollLines; |
| 790 | if ( y ) |
| 791 | *y = m_yScrollPixelsPerLine * m_yScrollLines; |
| 792 | } |
| 793 | |
| 794 | // Where the current view starts from |
| 795 | void wxScrollHelper::GetViewStart (int *x, int *y) const |
| 796 | { |
| 797 | if ( x ) |
| 798 | *x = m_xScrollPosition; |
| 799 | if ( y ) |
| 800 | *y = m_yScrollPosition; |
| 801 | } |
| 802 | |
| 803 | void wxScrollHelper::CalcScrolledPosition(int x, int y, int *xx, int *yy) const |
| 804 | { |
| 805 | if ( xx ) |
| 806 | *xx = x - m_xScrollPosition * m_xScrollPixelsPerLine; |
| 807 | if ( yy ) |
| 808 | *yy = y - m_yScrollPosition * m_yScrollPixelsPerLine; |
| 809 | } |
| 810 | |
| 811 | void wxScrollHelper::CalcUnscrolledPosition(int x, int y, int *xx, int *yy) const |
| 812 | { |
| 813 | if ( xx ) |
| 814 | *xx = x + m_xScrollPosition * m_xScrollPixelsPerLine; |
| 815 | if ( yy ) |
| 816 | *yy = y + m_yScrollPosition * m_yScrollPixelsPerLine; |
| 817 | } |
| 818 | |
| 819 | // ---------------------------------------------------------------------------- |
| 820 | // event handlers |
| 821 | // ---------------------------------------------------------------------------- |
| 822 | |
| 823 | // Default OnSize resets scrollbars, if any |
| 824 | void wxScrollHelper::HandleOnSize(wxSizeEvent& WXUNUSED(event)) |
| 825 | { |
| 826 | #if wxUSE_CONSTRAINTS |
| 827 | if ( m_targetWindow->GetAutoLayout() ) |
| 828 | m_targetWindow->Layout(); |
| 829 | #endif |
| 830 | |
| 831 | AdjustScrollbars(); |
| 832 | } |
| 833 | |
| 834 | // This calls OnDraw, having adjusted the origin according to the current |
| 835 | // scroll position |
| 836 | void wxScrollHelper::HandleOnPaint(wxPaintEvent& WXUNUSED(event)) |
| 837 | { |
| 838 | wxPaintDC dc(m_targetWindow); |
| 839 | DoPrepareDC(dc); |
| 840 | |
| 841 | OnDraw(dc); |
| 842 | } |
| 843 | |
| 844 | // kbd handling: notice that we use OnChar() and not OnKeyDown() for |
| 845 | // compatibility here - if we used OnKeyDown(), the programs which process |
| 846 | // arrows themselves in their OnChar() would never get the message and like |
| 847 | // this they always have the priority |
| 848 | void wxScrollHelper::HandleOnChar(wxKeyEvent& event) |
| 849 | { |
| 850 | int stx, sty, // view origin |
| 851 | szx, szy, // view size (total) |
| 852 | clix, cliy; // view size (on screen) |
| 853 | |
| 854 | GetViewStart(&stx, &sty); |
| 855 | GetTargetSize(&clix, &cliy); |
| 856 | GetVirtualSize(&szx, &szy); |
| 857 | |
| 858 | if( m_xScrollPixelsPerLine ) |
| 859 | { |
| 860 | clix /= m_xScrollPixelsPerLine; |
| 861 | szx /= m_xScrollPixelsPerLine; |
| 862 | } |
| 863 | else |
| 864 | { |
| 865 | clix = 0; |
| 866 | szx = -1; |
| 867 | } |
| 868 | if( m_yScrollPixelsPerLine ) |
| 869 | { |
| 870 | cliy /= m_yScrollPixelsPerLine; |
| 871 | szy /= m_yScrollPixelsPerLine; |
| 872 | } |
| 873 | else |
| 874 | { |
| 875 | cliy = 0; |
| 876 | szy = -1; |
| 877 | } |
| 878 | |
| 879 | int xScrollOld = m_xScrollPosition, |
| 880 | yScrollOld = m_yScrollPosition; |
| 881 | |
| 882 | int dsty; |
| 883 | switch ( event.KeyCode() ) |
| 884 | { |
| 885 | case WXK_PAGEUP: |
| 886 | case WXK_PRIOR: |
| 887 | dsty = sty - (5 * cliy / 6); |
| 888 | Scroll(-1, (dsty == -1) ? 0 : dsty); |
| 889 | break; |
| 890 | |
| 891 | case WXK_PAGEDOWN: |
| 892 | case WXK_NEXT: |
| 893 | Scroll(-1, sty + (5 * cliy / 6)); |
| 894 | break; |
| 895 | |
| 896 | case WXK_HOME: |
| 897 | Scroll(0, event.ControlDown() ? 0 : -1); |
| 898 | break; |
| 899 | |
| 900 | case WXK_END: |
| 901 | Scroll(szx - clix, event.ControlDown() ? szy - cliy : -1); |
| 902 | break; |
| 903 | |
| 904 | case WXK_UP: |
| 905 | Scroll(-1, sty - 1); |
| 906 | break; |
| 907 | |
| 908 | case WXK_DOWN: |
| 909 | Scroll(-1, sty + 1); |
| 910 | break; |
| 911 | |
| 912 | case WXK_LEFT: |
| 913 | Scroll(stx - 1, -1); |
| 914 | break; |
| 915 | |
| 916 | case WXK_RIGHT: |
| 917 | Scroll(stx + 1, -1); |
| 918 | break; |
| 919 | |
| 920 | default: |
| 921 | // not for us |
| 922 | event.Skip(); |
| 923 | } |
| 924 | |
| 925 | if ( m_xScrollPosition != xScrollOld ) |
| 926 | { |
| 927 | wxScrollWinEvent event(wxEVT_SCROLLWIN_THUMBTRACK, m_xScrollPosition, |
| 928 | wxHORIZONTAL); |
| 929 | event.SetEventObject(m_win); |
| 930 | m_win->GetEventHandler()->ProcessEvent(event); |
| 931 | } |
| 932 | |
| 933 | if ( m_yScrollPosition != yScrollOld ) |
| 934 | { |
| 935 | wxScrollWinEvent event(wxEVT_SCROLLWIN_THUMBTRACK, m_yScrollPosition, |
| 936 | wxVERTICAL); |
| 937 | event.SetEventObject(m_win); |
| 938 | m_win->GetEventHandler()->ProcessEvent(event); |
| 939 | } |
| 940 | } |
| 941 | |
| 942 | // ---------------------------------------------------------------------------- |
| 943 | // autoscroll stuff: these functions deal with sending fake scroll events when |
| 944 | // a captured mouse is being held outside the window |
| 945 | // ---------------------------------------------------------------------------- |
| 946 | |
| 947 | bool wxScrollHelper::SendAutoScrollEvents(wxScrollWinEvent& event) const |
| 948 | { |
| 949 | // only send the event if the window is scrollable in this direction |
| 950 | wxWindow *win = (wxWindow *)event.GetEventObject(); |
| 951 | return win->HasScrollbar(event.GetOrientation()); |
| 952 | } |
| 953 | |
| 954 | void wxScrollHelper::StopAutoScrolling() |
| 955 | { |
| 956 | if ( m_timerAutoScroll ) |
| 957 | { |
| 958 | delete m_timerAutoScroll; |
| 959 | m_timerAutoScroll = (wxTimer *)NULL; |
| 960 | } |
| 961 | } |
| 962 | |
| 963 | void wxScrollHelper::HandleOnMouseEnter(wxMouseEvent& event) |
| 964 | { |
| 965 | StopAutoScrolling(); |
| 966 | |
| 967 | event.Skip(); |
| 968 | } |
| 969 | |
| 970 | void wxScrollHelper::HandleOnMouseLeave(wxMouseEvent& event) |
| 971 | { |
| 972 | // don't prevent the usual processing of the event from taking place |
| 973 | event.Skip(); |
| 974 | |
| 975 | // when a captured mouse leave a scrolled window we start generate |
| 976 | // scrolling events to allow, for example, extending selection beyond the |
| 977 | // visible area in some controls |
| 978 | if ( wxWindow::GetCapture() == m_targetWindow ) |
| 979 | { |
| 980 | // where is the mouse leaving? |
| 981 | int pos, orient; |
| 982 | wxPoint pt = event.GetPosition(); |
| 983 | if ( pt.x < 0 ) |
| 984 | { |
| 985 | orient = wxHORIZONTAL; |
| 986 | pos = 0; |
| 987 | } |
| 988 | else if ( pt.y < 0 ) |
| 989 | { |
| 990 | orient = wxVERTICAL; |
| 991 | pos = 0; |
| 992 | } |
| 993 | else // we're lower or to the right of the window |
| 994 | { |
| 995 | wxSize size = m_targetWindow->GetClientSize(); |
| 996 | if ( pt.x > size.x ) |
| 997 | { |
| 998 | orient = wxHORIZONTAL; |
| 999 | pos = m_xScrollLines; |
| 1000 | } |
| 1001 | else if ( pt.y > size.y ) |
| 1002 | { |
| 1003 | orient = wxVERTICAL; |
| 1004 | pos = m_yScrollLines; |
| 1005 | } |
| 1006 | else // this should be impossible |
| 1007 | { |
| 1008 | // but seems to happen sometimes under wxMSW - maybe it's a bug |
| 1009 | // there but for now just ignore it |
| 1010 | |
| 1011 | //wxFAIL_MSG( _T("can't understand where has mouse gone") ); |
| 1012 | |
| 1013 | return; |
| 1014 | } |
| 1015 | } |
| 1016 | |
| 1017 | // only start the auto scroll timer if the window can be scrolled in |
| 1018 | // this direction |
| 1019 | if ( !m_targetWindow->HasScrollbar(orient) ) |
| 1020 | return; |
| 1021 | |
| 1022 | delete m_timerAutoScroll; |
| 1023 | m_timerAutoScroll = new wxAutoScrollTimer |
| 1024 | ( |
| 1025 | m_targetWindow, this, |
| 1026 | pos == 0 ? wxEVT_SCROLLWIN_LINEUP |
| 1027 | : wxEVT_SCROLLWIN_LINEDOWN, |
| 1028 | pos, |
| 1029 | orient |
| 1030 | ); |
| 1031 | m_timerAutoScroll->Start(50); // FIXME: make configurable |
| 1032 | } |
| 1033 | } |
| 1034 | |
| 1035 | #if wxUSE_MOUSEWHEEL |
| 1036 | |
| 1037 | void wxScrollHelper::HandleOnMouseWheel(wxMouseEvent& event) |
| 1038 | { |
| 1039 | m_wheelRotation += event.GetWheelRotation(); |
| 1040 | int lines = m_wheelRotation / event.GetWheelDelta(); |
| 1041 | m_wheelRotation -= lines * event.GetWheelDelta(); |
| 1042 | |
| 1043 | if (lines != 0) |
| 1044 | { |
| 1045 | lines *= event.GetLinesPerAction(); |
| 1046 | |
| 1047 | wxScrollWinEvent newEvent; |
| 1048 | |
| 1049 | newEvent.SetPosition(0); |
| 1050 | newEvent.SetOrientation(wxVERTICAL); |
| 1051 | newEvent.m_eventObject = m_win; |
| 1052 | if (lines > 0) |
| 1053 | newEvent.m_eventType = wxEVT_SCROLLWIN_LINEUP; |
| 1054 | else |
| 1055 | newEvent.m_eventType = wxEVT_SCROLLWIN_LINEDOWN; |
| 1056 | |
| 1057 | int times = abs(lines); |
| 1058 | for (; times > 0; times --) |
| 1059 | m_win->GetEventHandler()->ProcessEvent(newEvent); |
| 1060 | |
| 1061 | /* Old Way */ |
| 1062 | // int vsx, vsy; |
| 1063 | // GetViewStart(&vsx, &vsy); |
| 1064 | // Scroll(-1, vsy - lines); |
| 1065 | } |
| 1066 | } |
| 1067 | |
| 1068 | #endif // wxUSE_MOUSEWHEEL |
| 1069 | |
| 1070 | // ---------------------------------------------------------------------------- |
| 1071 | // wxGenericScrolledWindow implementation |
| 1072 | // ---------------------------------------------------------------------------- |
| 1073 | |
| 1074 | IMPLEMENT_DYNAMIC_CLASS(wxGenericScrolledWindow, wxPanel) |
| 1075 | |
| 1076 | BEGIN_EVENT_TABLE(wxGenericScrolledWindow, wxPanel) |
| 1077 | EVT_PAINT(wxGenericScrolledWindow::OnPaint) |
| 1078 | END_EVENT_TABLE() |
| 1079 | |
| 1080 | bool wxGenericScrolledWindow::Create(wxWindow *parent, |
| 1081 | wxWindowID id, |
| 1082 | const wxPoint& pos, |
| 1083 | const wxSize& size, |
| 1084 | long style, |
| 1085 | const wxString& name) |
| 1086 | { |
| 1087 | m_targetWindow = this; |
| 1088 | |
| 1089 | bool ok = wxPanel::Create(parent, id, pos, size, style, name); |
| 1090 | |
| 1091 | #ifdef __WXMSW__ |
| 1092 | // we need to process arrows ourselves for scrolling |
| 1093 | m_lDlgCode |= DLGC_WANTARROWS; |
| 1094 | #endif // __WXMSW__ |
| 1095 | |
| 1096 | return ok; |
| 1097 | } |
| 1098 | |
| 1099 | wxGenericScrolledWindow::~wxGenericScrolledWindow() |
| 1100 | { |
| 1101 | } |
| 1102 | |
| 1103 | void wxGenericScrolledWindow::OnPaint(wxPaintEvent& event) |
| 1104 | { |
| 1105 | // the user code didn't really draw the window if we got here, so set this |
| 1106 | // flag to try to call OnDraw() later |
| 1107 | m_handler->ResetDrawnFlag(); |
| 1108 | |
| 1109 | event.Skip(); |
| 1110 | } |
| 1111 | |
| 1112 | #if WXWIN_COMPATIBILITY |
| 1113 | |
| 1114 | void wxGenericScrolledWindow::GetScrollUnitsPerPage (int *x_page, int *y_page) const |
| 1115 | { |
| 1116 | *x_page = GetScrollPageSize(wxHORIZONTAL); |
| 1117 | *y_page = GetScrollPageSize(wxVERTICAL); |
| 1118 | } |
| 1119 | |
| 1120 | void wxGenericScrolledWindow::CalcUnscrolledPosition(int x, int y, float *xx, float *yy) const |
| 1121 | { |
| 1122 | if ( xx ) |
| 1123 | *xx = (float)(x + m_xScrollPosition * m_xScrollPixelsPerLine); |
| 1124 | if ( yy ) |
| 1125 | *yy = (float)(y + m_yScrollPosition * m_yScrollPixelsPerLine); |
| 1126 | } |
| 1127 | |
| 1128 | #endif // WXWIN_COMPATIBILITY |
| 1129 | |
| 1130 | #endif // !wxGTK |
| 1131 | |