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c801d85f | 1 | ///////////////////////////////////////////////////////////////////////////// |
d80cd92a | 2 | // Name: generic/scrolwin.cpp |
fa3541bd | 3 | // Purpose: wxGenericScrolledWindow implementation |
c801d85f | 4 | // Author: Julian Smart |
1e6feb95 | 5 | // Modified by: Vadim Zeitlin on 31.08.00: wxScrollHelper allows to implement |
c801d85f KB |
6 | // Created: 01/02/97 |
7 | // RCS-ID: $Id$ | |
1e6feb95 | 8 | // Copyright: (c) wxWindows team |
a58a12e9 | 9 | // Licence: wxWindows license |
c801d85f KB |
10 | ///////////////////////////////////////////////////////////////////////////// |
11 | ||
d80cd92a VZ |
12 | // ============================================================================ |
13 | // declarations | |
14 | // ============================================================================ | |
15 | ||
16 | // ---------------------------------------------------------------------------- | |
17 | // headers | |
18 | // ---------------------------------------------------------------------------- | |
19 | ||
c801d85f | 20 | #ifdef __GNUG__ |
3a8c693a | 21 | #pragma implementation "genscrolwin.h" |
c801d85f KB |
22 | #endif |
23 | ||
bcd055ae JJ |
24 | #ifdef __VMS |
25 | #define XtDisplay XTDISPLAY | |
26 | #endif | |
27 | ||
c801d85f KB |
28 | // For compilers that support precompilation, includes "wx.h". |
29 | #include "wx/wxprec.h" | |
30 | ||
c801d85f | 31 | #ifdef __BORLANDC__ |
d80cd92a | 32 | #pragma hdrstop |
c801d85f KB |
33 | #endif |
34 | ||
3a8c693a VZ |
35 | #if !defined(__WXGTK__) || defined(__WXUNIVERSAL__) |
36 | ||
d80cd92a VZ |
37 | #include "wx/utils.h" |
38 | #include "wx/dcclient.h" | |
39 | ||
1e6feb95 | 40 | #include "wx/scrolwin.h" |
053f9cc1 | 41 | #include "wx/panel.h" |
1e6feb95 | 42 | #include "wx/timer.h" |
c801d85f | 43 | |
48d1144b | 44 | #ifdef __WXMSW__ |
1e6feb95 | 45 | #include <windows.h> // for DLGC_WANTARROWS |
48d1144b JS |
46 | #endif |
47 | ||
a91b47e8 JS |
48 | #ifdef __WXMOTIF__ |
49 | // For wxRETAINED implementation | |
338dd992 JJ |
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 | |
a91b47e8 | 54 | #include <Xm/Xm.h> |
338dd992 JJ |
55 | #ifdef __VMS__ |
56 | # pragma message enable nosimpint | |
57 | #endif | |
a91b47e8 JS |
58 | #endif |
59 | ||
fa3541bd | 60 | IMPLEMENT_CLASS(wxScrolledWindow, wxGenericScrolledWindow) |
fa3541bd | 61 | |
d80cd92a | 62 | // ---------------------------------------------------------------------------- |
1e6feb95 VZ |
63 | // wxScrollHelperEvtHandler: intercept the events from the window and forward |
64 | // them to wxScrollHelper | |
d80cd92a VZ |
65 | // ---------------------------------------------------------------------------- |
66 | ||
1e6feb95 VZ |
67 | class wxScrollHelperEvtHandler : public wxEvtHandler |
68 | { | |
69 | public: | |
70 | wxScrollHelperEvtHandler(wxScrollHelper *scrollHelper) | |
71 | { | |
72 | m_scrollHelper = scrollHelper; | |
73 | } | |
d80cd92a | 74 | |
1e6feb95 VZ |
75 | virtual bool ProcessEvent(wxEvent& event); |
76 | ||
77 | private: | |
78 | wxScrollHelper *m_scrollHelper; | |
79 | }; | |
80 | ||
81 | // ---------------------------------------------------------------------------- | |
82 | // wxAutoScrollTimer: the timer used to generate a stream of scroll events when | |
83 | // a captured mouse is held outside the window | |
84 | // ---------------------------------------------------------------------------- | |
85 | ||
86 | class wxAutoScrollTimer : public wxTimer | |
87 | { | |
88 | public: | |
89 | wxAutoScrollTimer(wxWindow *winToScroll, wxScrollHelper *scroll, | |
90 | wxEventType eventTypeToSend, | |
91 | int pos, int orient); | |
92 | ||
93 | virtual void Notify(); | |
94 | ||
95 | private: | |
96 | wxWindow *m_win; | |
97 | wxScrollHelper *m_scrollHelper; | |
98 | wxEventType m_eventType; | |
99 | int m_pos, | |
100 | m_orient; | |
101 | }; | |
d80cd92a VZ |
102 | |
103 | // ============================================================================ | |
104 | // implementation | |
105 | // ============================================================================ | |
106 | ||
107 | // ---------------------------------------------------------------------------- | |
1e6feb95 | 108 | // wxAutoScrollTimer |
d80cd92a VZ |
109 | // ---------------------------------------------------------------------------- |
110 | ||
1e6feb95 VZ |
111 | wxAutoScrollTimer::wxAutoScrollTimer(wxWindow *winToScroll, |
112 | wxScrollHelper *scroll, | |
113 | wxEventType eventTypeToSend, | |
114 | int pos, int orient) | |
c801d85f | 115 | { |
1e6feb95 VZ |
116 | m_win = winToScroll; |
117 | m_scrollHelper = scroll; | |
118 | m_eventType = eventTypeToSend; | |
119 | m_pos = pos; | |
120 | m_orient = orient; | |
c801d85f KB |
121 | } |
122 | ||
1e6feb95 | 123 | void wxAutoScrollTimer::Notify() |
c801d85f | 124 | { |
1e6feb95 VZ |
125 | // only do all this as long as the window is capturing the mouse |
126 | if ( wxWindow::GetCapture() != m_win ) | |
127 | { | |
128 | Stop(); | |
129 | } | |
130 | else // we still capture the mouse, continue generating events | |
131 | { | |
132 | // first scroll the window if we are allowed to do it | |
133 | wxScrollWinEvent event1(m_eventType, m_pos, m_orient); | |
134 | event1.SetEventObject(m_win); | |
135 | if ( m_scrollHelper->SendAutoScrollEvents(event1) && | |
136 | m_win->GetEventHandler()->ProcessEvent(event1) ) | |
137 | { | |
138 | // and then send a pseudo mouse-move event to refresh the selection | |
139 | wxMouseEvent event2(wxEVT_MOTION); | |
140 | wxGetMousePosition(&event2.m_x, &event2.m_y); | |
141 | ||
142 | // the mouse event coordinates should be client, not screen as | |
143 | // returned by wxGetMousePosition | |
144 | wxWindow *parentTop = m_win; | |
145 | while ( parentTop->GetParent() ) | |
146 | parentTop = parentTop->GetParent(); | |
147 | wxPoint ptOrig = parentTop->GetPosition(); | |
148 | event2.m_x -= ptOrig.x; | |
149 | event2.m_y -= ptOrig.y; | |
150 | ||
151 | event2.SetEventObject(m_win); | |
152 | ||
153 | // FIXME: we don't fill in the other members - ok? | |
154 | ||
155 | m_win->GetEventHandler()->ProcessEvent(event2); | |
156 | } | |
157 | else // can't scroll further, stop | |
158 | { | |
159 | Stop(); | |
160 | } | |
161 | } | |
162 | } | |
163 | ||
164 | // ---------------------------------------------------------------------------- | |
165 | // wxScrollHelperEvtHandler | |
166 | // ---------------------------------------------------------------------------- | |
167 | ||
168 | bool wxScrollHelperEvtHandler::ProcessEvent(wxEvent& event) | |
169 | { | |
9a268018 | 170 | wxEventType evType = event.GetEventType(); |
2feed004 VZ |
171 | |
172 | if ( evType == wxEVT_SIZE ) | |
9a268018 RR |
173 | { |
174 | m_scrollHelper->HandleOnSize((wxSizeEvent &)event); | |
9a268018 | 175 | } |
2feed004 | 176 | |
1e6feb95 VZ |
177 | if ( wxEvtHandler::ProcessEvent(event) ) |
178 | return TRUE; | |
2feed004 | 179 | |
1e6feb95 VZ |
180 | // reset the skipped flag to FALSE as it might have been set to TRUE in |
181 | // ProcessEvent() above | |
182 | event.Skip(FALSE); | |
183 | ||
e421922f VZ |
184 | if ( evType == wxEVT_PAINT ) |
185 | { | |
186 | m_scrollHelper->HandleOnPaint((wxPaintEvent &)event); | |
187 | return TRUE; | |
188 | } | |
1e6feb95 | 189 | |
e421922f VZ |
190 | if ( evType == wxEVT_SCROLLWIN_TOP || |
191 | evType == wxEVT_SCROLLWIN_BOTTOM || | |
192 | evType == wxEVT_SCROLLWIN_LINEUP || | |
193 | evType == wxEVT_SCROLLWIN_LINEDOWN || | |
194 | evType == wxEVT_SCROLLWIN_PAGEUP || | |
195 | evType == wxEVT_SCROLLWIN_PAGEDOWN || | |
196 | evType == wxEVT_SCROLLWIN_THUMBTRACK || | |
197 | evType == wxEVT_SCROLLWIN_THUMBRELEASE ) | |
198 | { | |
199 | m_scrollHelper->HandleOnScroll((wxScrollWinEvent &)event); | |
1e6feb95 | 200 | return !event.GetSkipped(); |
e421922f | 201 | } |
1e6feb95 | 202 | |
e421922f VZ |
203 | if ( evType == wxEVT_ENTER_WINDOW ) |
204 | { | |
205 | m_scrollHelper->HandleOnMouseEnter((wxMouseEvent &)event); | |
206 | } | |
207 | else if ( evType == wxEVT_LEAVE_WINDOW ) | |
208 | { | |
209 | m_scrollHelper->HandleOnMouseLeave((wxMouseEvent &)event); | |
210 | } | |
211 | #if wxUSE_MOUSEWHEEL | |
212 | else if ( evType == wxEVT_MOUSEWHEEL ) | |
213 | { | |
214 | m_scrollHelper->HandleOnMouseWheel((wxMouseEvent &)event); | |
215 | } | |
216 | #endif // wxUSE_MOUSEWHEEL | |
e421922f VZ |
217 | else if ( evType == wxEVT_CHAR ) |
218 | { | |
219 | m_scrollHelper->HandleOnChar((wxKeyEvent &)event); | |
220 | return !event.GetSkipped(); | |
1e6feb95 VZ |
221 | } |
222 | ||
223 | return FALSE; | |
224 | } | |
225 | ||
226 | // ---------------------------------------------------------------------------- | |
227 | // wxScrollHelper construction | |
228 | // ---------------------------------------------------------------------------- | |
229 | ||
230 | wxScrollHelper::wxScrollHelper(wxWindow *win) | |
231 | { | |
232 | m_xScrollPixelsPerLine = | |
233 | m_yScrollPixelsPerLine = | |
234 | m_xScrollPosition = | |
235 | m_yScrollPosition = | |
236 | m_xScrollLines = | |
237 | m_yScrollLines = | |
238 | m_xScrollLinesPerPage = | |
139adb6a | 239 | m_yScrollLinesPerPage = 0; |
1e6feb95 VZ |
240 | |
241 | m_xScrollingEnabled = | |
242 | m_yScrollingEnabled = TRUE; | |
243 | ||
244 | m_scaleX = | |
139adb6a | 245 | m_scaleY = 1.0; |
24ce4c18 | 246 | #if wxUSE_MOUSEWHEEL |
d2c52078 | 247 | m_wheelRotation = 0; |
24ce4c18 | 248 | #endif |
a58a12e9 | 249 | |
1e6feb95 VZ |
250 | m_win = |
251 | m_targetWindow = (wxWindow *)NULL; | |
139adb6a | 252 | |
1e6feb95 | 253 | m_timerAutoScroll = (wxTimer *)NULL; |
d7da9756 | 254 | |
1e6feb95 VZ |
255 | if ( win ) |
256 | SetWindow(win); | |
257 | } | |
d7da9756 | 258 | |
1e6feb95 VZ |
259 | void wxScrollHelper::SetWindow(wxWindow *win) |
260 | { | |
261 | wxCHECK_RET( win, _T("wxScrollHelper needs a window to scroll") ); | |
262 | ||
263 | m_targetWindow = m_win = win; | |
264 | ||
265 | // install the event handler which will intercept the events we're | |
266 | // interested in | |
267 | m_win->PushEventHandler(new wxScrollHelperEvtHandler(this)); | |
c801d85f KB |
268 | } |
269 | ||
1e6feb95 | 270 | wxScrollHelper::~wxScrollHelper() |
d80cd92a | 271 | { |
1e6feb95 VZ |
272 | StopAutoScrolling(); |
273 | ||
274 | if ( m_targetWindow ) | |
275 | m_targetWindow->PopEventHandler(TRUE /* do delete it */); | |
d80cd92a VZ |
276 | } |
277 | ||
278 | // ---------------------------------------------------------------------------- | |
279 | // setting scrolling parameters | |
280 | // ---------------------------------------------------------------------------- | |
281 | ||
1e6feb95 VZ |
282 | void wxScrollHelper::SetScrollbars(int pixelsPerUnitX, |
283 | int pixelsPerUnitY, | |
284 | int noUnitsX, | |
285 | int noUnitsY, | |
286 | int xPos, | |
287 | int yPos, | |
288 | bool noRefresh) | |
c801d85f | 289 | { |
b0486e0d SN |
290 | int xpos, ypos; |
291 | ||
292 | CalcUnscrolledPosition(xPos, yPos, &xpos, &ypos); | |
139adb6a RR |
293 | bool do_refresh = |
294 | ( | |
c801d85f | 295 | (noUnitsX != 0 && m_xScrollLines == 0) || |
d2c52078 | 296 | (noUnitsX < m_xScrollLines && xpos > pixelsPerUnitX*noUnitsX) || |
b0486e0d | 297 | |
c801d85f | 298 | (noUnitsY != 0 && m_yScrollLines == 0) || |
b0486e0d | 299 | (noUnitsY < m_yScrollLines && ypos > pixelsPerUnitY*noUnitsY) || |
c801d85f | 300 | (xPos != m_xScrollPosition) || |
b0486e0d | 301 | (yPos != m_yScrollPosition) |
139adb6a | 302 | ); |
a58a12e9 | 303 | |
139adb6a RR |
304 | m_xScrollPixelsPerLine = pixelsPerUnitX; |
305 | m_yScrollPixelsPerLine = pixelsPerUnitY; | |
306 | m_xScrollPosition = xPos; | |
307 | m_yScrollPosition = yPos; | |
308 | m_xScrollLines = noUnitsX; | |
309 | m_yScrollLines = noUnitsY; | |
a91b47e8 JS |
310 | |
311 | #ifdef __WXMOTIF__ | |
312 | // Sorry, some Motif-specific code to implement a backing pixmap | |
313 | // for the wxRETAINED style. Implementing a backing store can't | |
314 | // be entirely generic because it relies on the wxWindowDC implementation | |
315 | // to duplicate X drawing calls for the backing pixmap. | |
316 | ||
1e6feb95 | 317 | if ( m_targetWindow->GetWindowStyle() & wxRETAINED ) |
a91b47e8 | 318 | { |
1e6feb95 | 319 | Display* dpy = XtDisplay((Widget)m_targetWindow->GetMainWidget()); |
a91b47e8 JS |
320 | |
321 | int totalPixelWidth = m_xScrollLines * m_xScrollPixelsPerLine; | |
322 | int totalPixelHeight = m_yScrollLines * m_yScrollPixelsPerLine; | |
9806a47c JS |
323 | if (m_targetWindow->GetBackingPixmap() && |
324 | !((m_targetWindow->GetPixmapWidth() == totalPixelWidth) && | |
325 | (m_targetWindow->GetPixmapHeight() == totalPixelHeight))) | |
a91b47e8 | 326 | { |
9806a47c JS |
327 | XFreePixmap (dpy, (Pixmap) m_targetWindow->GetBackingPixmap()); |
328 | m_targetWindow->SetBackingPixmap((WXPixmap) 0); | |
a91b47e8 JS |
329 | } |
330 | ||
9806a47c | 331 | if (!m_targetWindow->GetBackingPixmap() && |
a91b47e8 JS |
332 | (noUnitsX != 0) && (noUnitsY != 0)) |
333 | { | |
334 | int depth = wxDisplayDepth(); | |
9806a47c JS |
335 | m_targetWindow->SetPixmapWidth(totalPixelWidth); |
336 | m_targetWindow->SetPixmapHeight(totalPixelHeight); | |
337 | m_targetWindow->SetBackingPixmap((WXPixmap) XCreatePixmap (dpy, RootWindow (dpy, DefaultScreen (dpy)), | |
338 | m_targetWindow->GetPixmapWidth(), m_targetWindow->GetPixmapHeight(), depth)); | |
d80cd92a | 339 | } |
a91b47e8 JS |
340 | |
341 | } | |
d80cd92a | 342 | #endif // Motif |
a58a12e9 | 343 | |
139adb6a | 344 | AdjustScrollbars(); |
a58a12e9 VZ |
345 | |
346 | if (do_refresh && !noRefresh) | |
1e6feb95 | 347 | m_targetWindow->Refresh(TRUE, GetRect()); |
a58a12e9 | 348 | |
7c74e7fe | 349 | #ifdef __WXMAC__ |
d80cd92a | 350 | m_targetWindow->MacUpdateImmediately() ; |
c801d85f KB |
351 | #endif |
352 | } | |
353 | ||
d80cd92a VZ |
354 | // ---------------------------------------------------------------------------- |
355 | // target window handling | |
356 | // ---------------------------------------------------------------------------- | |
ecab4dba | 357 | |
1e6feb95 | 358 | void wxScrollHelper::SetTargetWindow( wxWindow *target ) |
ecab4dba RR |
359 | { |
360 | wxASSERT_MSG( target, wxT("target window must not be NULL") ); | |
361 | m_targetWindow = target; | |
362 | } | |
363 | ||
1e6feb95 | 364 | wxWindow *wxScrollHelper::GetTargetWindow() const |
ecab4dba RR |
365 | { |
366 | return m_targetWindow; | |
367 | } | |
368 | ||
d80cd92a VZ |
369 | // ---------------------------------------------------------------------------- |
370 | // scrolling implementation itself | |
371 | // ---------------------------------------------------------------------------- | |
372 | ||
1e6feb95 | 373 | void wxScrollHelper::HandleOnScroll(wxScrollWinEvent& event) |
c801d85f | 374 | { |
139adb6a | 375 | int nScrollInc = CalcScrollInc(event); |
1e6feb95 | 376 | if ( nScrollInc == 0 ) |
139adb6a | 377 | { |
1e6feb95 VZ |
378 | // can't scroll further |
379 | event.Skip(); | |
380 | ||
381 | return; | |
139adb6a | 382 | } |
c801d85f | 383 | |
1e6feb95 | 384 | int orient = event.GetOrientation(); |
139adb6a RR |
385 | if (orient == wxHORIZONTAL) |
386 | { | |
387 | m_xScrollPosition += nScrollInc; | |
a85c1552 | 388 | m_targetWindow->SetScrollPos(wxHORIZONTAL, m_xScrollPosition); |
139adb6a | 389 | } |
c801d85f | 390 | else |
139adb6a RR |
391 | { |
392 | m_yScrollPosition += nScrollInc; | |
a85c1552 | 393 | m_targetWindow->SetScrollPos(wxVERTICAL, m_yScrollPosition); |
139adb6a | 394 | } |
a58a12e9 | 395 | |
1e6feb95 VZ |
396 | bool needsRefresh = FALSE; |
397 | int dx = 0, | |
398 | dy = 0; | |
139adb6a RR |
399 | if (orient == wxHORIZONTAL) |
400 | { | |
1e6feb95 VZ |
401 | if ( m_xScrollingEnabled ) |
402 | { | |
403 | dx = -m_xScrollPixelsPerLine * nScrollInc; | |
404 | } | |
139adb6a | 405 | else |
1e6feb95 VZ |
406 | { |
407 | needsRefresh = TRUE; | |
408 | } | |
139adb6a | 409 | } |
c801d85f | 410 | else |
139adb6a | 411 | { |
1e6feb95 VZ |
412 | if ( m_yScrollingEnabled ) |
413 | { | |
414 | dy = -m_yScrollPixelsPerLine * nScrollInc; | |
415 | } | |
139adb6a | 416 | else |
1e6feb95 VZ |
417 | { |
418 | needsRefresh = TRUE; | |
419 | } | |
420 | } | |
421 | ||
422 | if ( needsRefresh ) | |
423 | { | |
424 | m_targetWindow->Refresh(TRUE, GetRect()); | |
425 | } | |
426 | else | |
427 | { | |
428 | m_targetWindow->ScrollWindow(dx, dy, GetRect()); | |
3d2b9c20 | 429 | } |
1e6feb95 | 430 | |
7c74e7fe | 431 | #ifdef __WXMAC__ |
d80cd92a | 432 | m_targetWindow->MacUpdateImmediately() ; |
7c74e7fe | 433 | #endif |
c801d85f KB |
434 | } |
435 | ||
1e6feb95 | 436 | int wxScrollHelper::CalcScrollInc(wxScrollWinEvent& event) |
c801d85f | 437 | { |
ecab4dba RR |
438 | int pos = event.GetPosition(); |
439 | int orient = event.GetOrientation(); | |
c801d85f | 440 | |
ecab4dba | 441 | int nScrollInc = 0; |
1a8caf94 | 442 | if (event.GetEventType() == wxEVT_SCROLLWIN_TOP) |
c801d85f | 443 | { |
ecab4dba RR |
444 | if (orient == wxHORIZONTAL) |
445 | nScrollInc = - m_xScrollPosition; | |
446 | else | |
447 | nScrollInc = - m_yScrollPosition; | |
1a8caf94 RR |
448 | } else |
449 | if (event.GetEventType() == wxEVT_SCROLLWIN_BOTTOM) | |
450 | { | |
ecab4dba RR |
451 | if (orient == wxHORIZONTAL) |
452 | nScrollInc = m_xScrollLines - m_xScrollPosition; | |
453 | else | |
454 | nScrollInc = m_yScrollLines - m_yScrollPosition; | |
1a8caf94 RR |
455 | } else |
456 | if (event.GetEventType() == wxEVT_SCROLLWIN_LINEUP) | |
457 | { | |
ecab4dba | 458 | nScrollInc = -1; |
1a8caf94 RR |
459 | } else |
460 | if (event.GetEventType() == wxEVT_SCROLLWIN_LINEDOWN) | |
461 | { | |
ecab4dba | 462 | nScrollInc = 1; |
1a8caf94 RR |
463 | } else |
464 | if (event.GetEventType() == wxEVT_SCROLLWIN_PAGEUP) | |
465 | { | |
ecab4dba RR |
466 | if (orient == wxHORIZONTAL) |
467 | nScrollInc = -GetScrollPageSize(wxHORIZONTAL); | |
468 | else | |
469 | nScrollInc = -GetScrollPageSize(wxVERTICAL); | |
1a8caf94 RR |
470 | } else |
471 | if (event.GetEventType() == wxEVT_SCROLLWIN_PAGEDOWN) | |
472 | { | |
ecab4dba RR |
473 | if (orient == wxHORIZONTAL) |
474 | nScrollInc = GetScrollPageSize(wxHORIZONTAL); | |
475 | else | |
476 | nScrollInc = GetScrollPageSize(wxVERTICAL); | |
1a8caf94 RR |
477 | } else |
478 | if ((event.GetEventType() == wxEVT_SCROLLWIN_THUMBTRACK) || | |
479 | (event.GetEventType() == wxEVT_SCROLLWIN_THUMBRELEASE)) | |
480 | { | |
ecab4dba RR |
481 | if (orient == wxHORIZONTAL) |
482 | nScrollInc = pos - m_xScrollPosition; | |
483 | else | |
484 | nScrollInc = pos - m_yScrollPosition; | |
c801d85f | 485 | } |
88150e60 | 486 | |
ecab4dba RR |
487 | if (orient == wxHORIZONTAL) |
488 | { | |
a58a12e9 | 489 | if (m_xScrollPixelsPerLine > 0) |
ecab4dba RR |
490 | { |
491 | int w, h; | |
1e6feb95 | 492 | GetTargetSize(&w, &h); |
ecab4dba RR |
493 | |
494 | int nMaxWidth = m_xScrollLines*m_xScrollPixelsPerLine; | |
495 | int noPositions = (int) ( ((nMaxWidth - w)/(double)m_xScrollPixelsPerLine) + 0.5 ); | |
496 | if (noPositions < 0) | |
d80cd92a | 497 | noPositions = 0; |
ecab4dba RR |
498 | |
499 | if ( (m_xScrollPosition + nScrollInc) < 0 ) | |
d80cd92a | 500 | nScrollInc = -m_xScrollPosition; // As -ve as we can go |
ecab4dba | 501 | else if ( (m_xScrollPosition + nScrollInc) > noPositions ) |
d80cd92a | 502 | nScrollInc = noPositions - m_xScrollPosition; // As +ve as we can go |
ecab4dba RR |
503 | } |
504 | else | |
1e6feb95 | 505 | m_targetWindow->Refresh(TRUE, GetRect()); |
9d9355c6 VZ |
506 | } |
507 | else | |
ecab4dba | 508 | { |
a58a12e9 | 509 | if (m_yScrollPixelsPerLine > 0) |
d80cd92a | 510 | { |
ecab4dba | 511 | int w, h; |
1e6feb95 | 512 | GetTargetSize(&w, &h); |
a58a12e9 | 513 | |
ecab4dba RR |
514 | int nMaxHeight = m_yScrollLines*m_yScrollPixelsPerLine; |
515 | int noPositions = (int) ( ((nMaxHeight - h)/(double)m_yScrollPixelsPerLine) + 0.5 ); | |
516 | if (noPositions < 0) | |
d80cd92a | 517 | noPositions = 0; |
a58a12e9 | 518 | |
ecab4dba | 519 | if ( (m_yScrollPosition + nScrollInc) < 0 ) |
d80cd92a | 520 | nScrollInc = -m_yScrollPosition; // As -ve as we can go |
ecab4dba | 521 | else if ( (m_yScrollPosition + nScrollInc) > noPositions ) |
d80cd92a | 522 | nScrollInc = noPositions - m_yScrollPosition; // As +ve as we can go |
ecab4dba RR |
523 | } |
524 | else | |
1e6feb95 | 525 | m_targetWindow->Refresh(TRUE, GetRect()); |
9d9355c6 | 526 | } |
9d9355c6 | 527 | |
ecab4dba | 528 | return nScrollInc; |
c801d85f KB |
529 | } |
530 | ||
531 | // Adjust the scrollbars - new version. | |
1e6feb95 | 532 | void wxScrollHelper::AdjustScrollbars() |
c801d85f | 533 | { |
aeb313f3 SC |
534 | #ifdef __WXMAC__ |
535 | m_targetWindow->MacUpdateImmediately(); | |
536 | #endif | |
537 | ||
139adb6a | 538 | int w, h; |
1e6feb95 | 539 | GetTargetSize(&w, &h); |
a58a12e9 | 540 | |
27d029c7 RR |
541 | int oldXScroll = m_xScrollPosition; |
542 | int oldYScroll = m_yScrollPosition; | |
c801d85f | 543 | |
139adb6a RR |
544 | if (m_xScrollLines > 0) |
545 | { | |
3d2b9c20 RR |
546 | // Calculate page size i.e. number of scroll units you get on the |
547 | // current client window | |
ecab4dba | 548 | int noPagePositions = (int) ( (w/(double)m_xScrollPixelsPerLine) + 0.5 ); |
139adb6a | 549 | if (noPagePositions < 1) noPagePositions = 1; |
1e6feb95 VZ |
550 | if ( noPagePositions > m_xScrollLines ) |
551 | noPagePositions = m_xScrollLines; | |
c801d85f | 552 | |
139adb6a | 553 | // Correct position if greater than extent of canvas minus |
3d2b9c20 RR |
554 | // the visible portion of it or if below zero |
555 | m_xScrollPosition = wxMin( m_xScrollLines-noPagePositions, m_xScrollPosition); | |
139adb6a | 556 | m_xScrollPosition = wxMax( 0, m_xScrollPosition ); |
c801d85f | 557 | |
1e6feb95 | 558 | m_targetWindow->SetScrollbar(wxHORIZONTAL, m_xScrollPosition, noPagePositions, m_xScrollLines); |
88150e60 JS |
559 | // The amount by which we scroll when paging |
560 | SetScrollPageSize(wxHORIZONTAL, noPagePositions); | |
139adb6a RR |
561 | } |
562 | else | |
a58a12e9 | 563 | { |
139adb6a | 564 | m_xScrollPosition = 0; |
1e6feb95 | 565 | m_targetWindow->SetScrollbar (wxHORIZONTAL, 0, 0, 0, FALSE); |
139adb6a | 566 | } |
a58a12e9 | 567 | |
139adb6a RR |
568 | if (m_yScrollLines > 0) |
569 | { | |
3d2b9c20 RR |
570 | // Calculate page size i.e. number of scroll units you get on the |
571 | // current client window | |
ecab4dba | 572 | int noPagePositions = (int) ( (h/(double)m_yScrollPixelsPerLine) + 0.5 ); |
139adb6a | 573 | if (noPagePositions < 1) noPagePositions = 1; |
1e6feb95 VZ |
574 | if ( noPagePositions > m_yScrollLines ) |
575 | noPagePositions = m_yScrollLines; | |
c801d85f | 576 | |
139adb6a | 577 | // Correct position if greater than extent of canvas minus |
3d2b9c20 | 578 | // the visible portion of it or if below zero |
139adb6a RR |
579 | m_yScrollPosition = wxMin( m_yScrollLines-noPagePositions, m_yScrollPosition ); |
580 | m_yScrollPosition = wxMax( 0, m_yScrollPosition ); | |
581 | ||
1e6feb95 | 582 | m_targetWindow->SetScrollbar(wxVERTICAL, m_yScrollPosition, noPagePositions, m_yScrollLines); |
88150e60 JS |
583 | // The amount by which we scroll when paging |
584 | SetScrollPageSize(wxVERTICAL, noPagePositions); | |
139adb6a RR |
585 | } |
586 | else | |
587 | { | |
588 | m_yScrollPosition = 0; | |
1e6feb95 | 589 | m_targetWindow->SetScrollbar (wxVERTICAL, 0, 0, 0, FALSE); |
139adb6a | 590 | } |
a58a12e9 | 591 | |
27d029c7 RR |
592 | if (oldXScroll != m_xScrollPosition) |
593 | { | |
594 | if (m_xScrollingEnabled) | |
1e6feb95 VZ |
595 | m_targetWindow->ScrollWindow( m_xScrollPixelsPerLine * (oldXScroll-m_xScrollPosition), 0, |
596 | GetRect() ); | |
27d029c7 | 597 | else |
1e6feb95 | 598 | m_targetWindow->Refresh(TRUE, GetRect()); |
27d029c7 | 599 | } |
a58a12e9 | 600 | |
27d029c7 RR |
601 | if (oldYScroll != m_yScrollPosition) |
602 | { | |
603 | if (m_yScrollingEnabled) | |
1e6feb95 VZ |
604 | m_targetWindow->ScrollWindow( 0, m_yScrollPixelsPerLine * (oldYScroll-m_yScrollPosition), |
605 | GetRect() ); | |
27d029c7 | 606 | else |
1e6feb95 | 607 | m_targetWindow->Refresh(TRUE, GetRect()); |
27d029c7 | 608 | } |
aeb313f3 SC |
609 | |
610 | #ifdef __WXMAC__ | |
611 | m_targetWindow->MacUpdateImmediately(); | |
612 | #endif | |
c801d85f KB |
613 | } |
614 | ||
1e6feb95 | 615 | void wxScrollHelper::DoPrepareDC(wxDC& dc) |
c801d85f | 616 | { |
1e6feb95 VZ |
617 | wxPoint pt = dc.GetDeviceOrigin(); |
618 | dc.SetDeviceOrigin( pt.x - m_xScrollPosition * m_xScrollPixelsPerLine, | |
619 | pt.y - m_yScrollPosition * m_yScrollPixelsPerLine ); | |
139adb6a | 620 | dc.SetUserScale( m_scaleX, m_scaleY ); |
c801d85f KB |
621 | } |
622 | ||
1e6feb95 | 623 | void wxScrollHelper::GetScrollPixelsPerUnit (int *x_unit, int *y_unit) const |
c801d85f | 624 | { |
a0bc2c1d VZ |
625 | if ( x_unit ) |
626 | *x_unit = m_xScrollPixelsPerLine; | |
627 | if ( y_unit ) | |
628 | *y_unit = m_yScrollPixelsPerLine; | |
c801d85f KB |
629 | } |
630 | ||
1e6feb95 | 631 | int wxScrollHelper::GetScrollPageSize(int orient) const |
c801d85f KB |
632 | { |
633 | if ( orient == wxHORIZONTAL ) | |
634 | return m_xScrollLinesPerPage; | |
635 | else | |
636 | return m_yScrollLinesPerPage; | |
637 | } | |
638 | ||
1e6feb95 | 639 | void wxScrollHelper::SetScrollPageSize(int orient, int pageSize) |
c801d85f KB |
640 | { |
641 | if ( orient == wxHORIZONTAL ) | |
642 | m_xScrollLinesPerPage = pageSize; | |
643 | else | |
644 | m_yScrollLinesPerPage = pageSize; | |
645 | } | |
646 | ||
647 | /* | |
648 | * Scroll to given position (scroll position, not pixel position) | |
649 | */ | |
1e6feb95 | 650 | void wxScrollHelper::Scroll( int x_pos, int y_pos ) |
c801d85f | 651 | { |
8b089c5e JS |
652 | if (!m_targetWindow) |
653 | return; | |
654 | ||
a58a12e9 | 655 | if (((x_pos == -1) || (x_pos == m_xScrollPosition)) && |
139adb6a | 656 | ((y_pos == -1) || (y_pos == m_yScrollPosition))) return; |
a58a12e9 | 657 | |
aeb313f3 SC |
658 | #ifdef __WXMAC__ |
659 | m_targetWindow->MacUpdateImmediately(); | |
660 | #endif | |
661 | ||
139adb6a | 662 | int w, h; |
1e6feb95 | 663 | GetTargetSize(&w, &h); |
c801d85f | 664 | |
8775b357 | 665 | if ((x_pos != -1) && (m_xScrollPixelsPerLine)) |
c801d85f | 666 | { |
ed673c6a | 667 | int old_x = m_xScrollPosition; |
139adb6a | 668 | m_xScrollPosition = x_pos; |
a58a12e9 | 669 | |
3d2b9c20 RR |
670 | // Calculate page size i.e. number of scroll units you get on the |
671 | // current client window | |
ecab4dba | 672 | int noPagePositions = (int) ( (w/(double)m_xScrollPixelsPerLine) + 0.5 ); |
139adb6a RR |
673 | if (noPagePositions < 1) noPagePositions = 1; |
674 | ||
675 | // Correct position if greater than extent of canvas minus | |
3d2b9c20 | 676 | // the visible portion of it or if below zero |
139adb6a RR |
677 | m_xScrollPosition = wxMin( m_xScrollLines-noPagePositions, m_xScrollPosition ); |
678 | m_xScrollPosition = wxMax( 0, m_xScrollPosition ); | |
a58a12e9 | 679 | |
f6bcfd97 | 680 | if (old_x != m_xScrollPosition) { |
a85c1552 | 681 | m_targetWindow->SetScrollPos( wxHORIZONTAL, m_xScrollPosition ); |
1e6feb95 VZ |
682 | m_targetWindow->ScrollWindow( (old_x-m_xScrollPosition)*m_xScrollPixelsPerLine, 0, |
683 | GetRect() ); | |
f6bcfd97 | 684 | } |
c801d85f | 685 | } |
8775b357 | 686 | if ((y_pos != -1) && (m_yScrollPixelsPerLine)) |
c801d85f | 687 | { |
ed673c6a | 688 | int old_y = m_yScrollPosition; |
139adb6a | 689 | m_yScrollPosition = y_pos; |
a58a12e9 | 690 | |
3d2b9c20 RR |
691 | // Calculate page size i.e. number of scroll units you get on the |
692 | // current client window | |
ecab4dba | 693 | int noPagePositions = (int) ( (h/(double)m_yScrollPixelsPerLine) + 0.5 ); |
139adb6a RR |
694 | if (noPagePositions < 1) noPagePositions = 1; |
695 | ||
696 | // Correct position if greater than extent of canvas minus | |
3d2b9c20 | 697 | // the visible portion of it or if below zero |
139adb6a RR |
698 | m_yScrollPosition = wxMin( m_yScrollLines-noPagePositions, m_yScrollPosition ); |
699 | m_yScrollPosition = wxMax( 0, m_yScrollPosition ); | |
d2c52078 | 700 | |
f6bcfd97 | 701 | if (old_y != m_yScrollPosition) { |
a85c1552 | 702 | m_targetWindow->SetScrollPos( wxVERTICAL, m_yScrollPosition ); |
1e6feb95 VZ |
703 | m_targetWindow->ScrollWindow( 0, (old_y-m_yScrollPosition)*m_yScrollPixelsPerLine, |
704 | GetRect() ); | |
f6bcfd97 | 705 | } |
c801d85f | 706 | } |
a58a12e9 | 707 | |
7c74e7fe | 708 | #ifdef __WXMAC__ |
3d2b9c20 | 709 | m_targetWindow->MacUpdateImmediately(); |
7c74e7fe | 710 | #endif |
aeb313f3 | 711 | |
c801d85f KB |
712 | } |
713 | ||
1e6feb95 | 714 | void wxScrollHelper::EnableScrolling (bool x_scroll, bool y_scroll) |
c801d85f | 715 | { |
139adb6a RR |
716 | m_xScrollingEnabled = x_scroll; |
717 | m_yScrollingEnabled = y_scroll; | |
c801d85f KB |
718 | } |
719 | ||
1e6feb95 | 720 | void wxScrollHelper::GetVirtualSize (int *x, int *y) const |
c801d85f | 721 | { |
a0bc2c1d VZ |
722 | if ( x ) |
723 | *x = m_xScrollPixelsPerLine * m_xScrollLines; | |
724 | if ( y ) | |
725 | *y = m_yScrollPixelsPerLine * m_yScrollLines; | |
c801d85f KB |
726 | } |
727 | ||
728 | // Where the current view starts from | |
1e6feb95 | 729 | void wxScrollHelper::GetViewStart (int *x, int *y) const |
c801d85f | 730 | { |
a0bc2c1d VZ |
731 | if ( x ) |
732 | *x = m_xScrollPosition; | |
733 | if ( y ) | |
734 | *y = m_yScrollPosition; | |
c801d85f KB |
735 | } |
736 | ||
1e6feb95 | 737 | void wxScrollHelper::CalcScrolledPosition(int x, int y, int *xx, int *yy) const |
c801d85f | 738 | { |
a0bc2c1d VZ |
739 | if ( xx ) |
740 | *xx = x - m_xScrollPosition * m_xScrollPixelsPerLine; | |
741 | if ( yy ) | |
742 | *yy = y - m_yScrollPosition * m_yScrollPixelsPerLine; | |
c801d85f KB |
743 | } |
744 | ||
1e6feb95 | 745 | void wxScrollHelper::CalcUnscrolledPosition(int x, int y, int *xx, int *yy) const |
c801d85f | 746 | { |
a0bc2c1d VZ |
747 | if ( xx ) |
748 | *xx = x + m_xScrollPosition * m_xScrollPixelsPerLine; | |
749 | if ( yy ) | |
750 | *yy = y + m_yScrollPosition * m_yScrollPixelsPerLine; | |
c801d85f | 751 | } |
d80cd92a VZ |
752 | |
753 | // ---------------------------------------------------------------------------- | |
754 | // event handlers | |
755 | // ---------------------------------------------------------------------------- | |
756 | ||
757 | // Default OnSize resets scrollbars, if any | |
1e6feb95 | 758 | void wxScrollHelper::HandleOnSize(wxSizeEvent& WXUNUSED(event)) |
d80cd92a VZ |
759 | { |
760 | #if wxUSE_CONSTRAINTS | |
1e6feb95 VZ |
761 | if ( m_targetWindow->GetAutoLayout() ) |
762 | m_targetWindow->Layout(); | |
d80cd92a VZ |
763 | #endif |
764 | ||
765 | AdjustScrollbars(); | |
766 | } | |
767 | ||
768 | // This calls OnDraw, having adjusted the origin according to the current | |
769 | // scroll position | |
1e6feb95 | 770 | void wxScrollHelper::HandleOnPaint(wxPaintEvent& WXUNUSED(event)) |
d80cd92a | 771 | { |
1e6feb95 VZ |
772 | wxPaintDC dc(m_targetWindow); |
773 | DoPrepareDC(dc); | |
d80cd92a VZ |
774 | |
775 | OnDraw(dc); | |
776 | } | |
777 | ||
438e3558 VZ |
778 | // kbd handling: notice that we use OnChar() and not OnKeyDown() for |
779 | // compatibility here - if we used OnKeyDown(), the programs which process | |
780 | // arrows themselves in their OnChar() would never get the message and like | |
781 | // this they always have the priority | |
1e6feb95 | 782 | void wxScrollHelper::HandleOnChar(wxKeyEvent& event) |
d80cd92a VZ |
783 | { |
784 | int stx, sty, // view origin | |
785 | szx, szy, // view size (total) | |
786 | clix, cliy; // view size (on screen) | |
787 | ||
1e6feb95 VZ |
788 | GetViewStart(&stx, &sty); |
789 | GetTargetSize(&clix, &cliy); | |
d80cd92a | 790 | GetVirtualSize(&szx, &szy); |
56dade3c RL |
791 | |
792 | if( m_xScrollPixelsPerLine ) | |
793 | { | |
794 | clix /= m_xScrollPixelsPerLine; | |
d7da9756 | 795 | szx /= m_xScrollPixelsPerLine; |
56dade3c RL |
796 | } |
797 | else | |
798 | { | |
799 | clix = 0; | |
d7da9756 | 800 | szx = -1; |
56dade3c RL |
801 | } |
802 | if( m_yScrollPixelsPerLine ) | |
803 | { | |
804 | cliy /= m_yScrollPixelsPerLine; | |
805 | szy /= m_yScrollPixelsPerLine; | |
806 | } | |
807 | else | |
808 | { | |
809 | cliy = 0; | |
d7da9756 | 810 | szy = -1; |
56dade3c | 811 | } |
d80cd92a | 812 | |
39c869a6 VZ |
813 | int xScrollOld = m_xScrollPosition, |
814 | yScrollOld = m_yScrollPosition; | |
815 | ||
ecb01792 | 816 | int dsty; |
d80cd92a VZ |
817 | switch ( event.KeyCode() ) |
818 | { | |
819 | case WXK_PAGEUP: | |
820 | case WXK_PRIOR: | |
ecb01792 RL |
821 | dsty = sty - (5 * cliy / 6); |
822 | Scroll(-1, (dsty == -1) ? 0 : dsty); | |
d80cd92a VZ |
823 | break; |
824 | ||
825 | case WXK_PAGEDOWN: | |
826 | case WXK_NEXT: | |
827 | Scroll(-1, sty + (5 * cliy / 6)); | |
828 | break; | |
829 | ||
d80cd92a VZ |
830 | case WXK_HOME: |
831 | Scroll(0, event.ControlDown() ? 0 : -1); | |
832 | break; | |
833 | ||
834 | case WXK_END: | |
4acd108c | 835 | Scroll(szx - clix, event.ControlDown() ? szy - cliy : -1); |
d80cd92a VZ |
836 | break; |
837 | ||
838 | case WXK_UP: | |
839 | Scroll(-1, sty - 1); | |
840 | break; | |
841 | ||
842 | case WXK_DOWN: | |
843 | Scroll(-1, sty + 1); | |
844 | break; | |
845 | ||
846 | case WXK_LEFT: | |
847 | Scroll(stx - 1, -1); | |
848 | break; | |
849 | ||
850 | case WXK_RIGHT: | |
851 | Scroll(stx + 1, -1); | |
852 | break; | |
853 | ||
854 | default: | |
855 | // not for us | |
856 | event.Skip(); | |
857 | } | |
39c869a6 VZ |
858 | |
859 | if ( m_xScrollPosition != xScrollOld ) | |
860 | { | |
861 | wxScrollWinEvent event(wxEVT_SCROLLWIN_THUMBTRACK, m_xScrollPosition, | |
862 | wxHORIZONTAL); | |
863 | event.SetEventObject(m_win); | |
864 | m_win->GetEventHandler()->ProcessEvent(event); | |
865 | } | |
866 | ||
867 | if ( m_yScrollPosition != yScrollOld ) | |
868 | { | |
869 | wxScrollWinEvent event(wxEVT_SCROLLWIN_THUMBTRACK, m_yScrollPosition, | |
870 | wxVERTICAL); | |
871 | event.SetEventObject(m_win); | |
872 | m_win->GetEventHandler()->ProcessEvent(event); | |
873 | } | |
d80cd92a | 874 | } |
d2c52078 | 875 | |
1e6feb95 VZ |
876 | // ---------------------------------------------------------------------------- |
877 | // autoscroll stuff: these functions deal with sending fake scroll events when | |
878 | // a captured mouse is being held outside the window | |
879 | // ---------------------------------------------------------------------------- | |
880 | ||
881 | bool wxScrollHelper::SendAutoScrollEvents(wxScrollWinEvent& event) const | |
882 | { | |
883 | // only send the event if the window is scrollable in this direction | |
884 | wxWindow *win = (wxWindow *)event.GetEventObject(); | |
885 | return win->HasScrollbar(event.GetOrientation()); | |
886 | } | |
887 | ||
888 | void wxScrollHelper::StopAutoScrolling() | |
889 | { | |
890 | if ( m_timerAutoScroll ) | |
891 | { | |
892 | delete m_timerAutoScroll; | |
893 | m_timerAutoScroll = (wxTimer *)NULL; | |
894 | } | |
895 | } | |
d2c52078 | 896 | |
1e6feb95 | 897 | void wxScrollHelper::HandleOnMouseEnter(wxMouseEvent& event) |
d2c52078 | 898 | { |
1e6feb95 VZ |
899 | StopAutoScrolling(); |
900 | ||
901 | event.Skip(); | |
902 | } | |
d2c52078 | 903 | |
1e6feb95 VZ |
904 | void wxScrollHelper::HandleOnMouseLeave(wxMouseEvent& event) |
905 | { | |
906 | // don't prevent the usual processing of the event from taking place | |
907 | event.Skip(); | |
908 | ||
909 | // when a captured mouse leave a scrolled window we start generate | |
910 | // scrolling events to allow, for example, extending selection beyond the | |
911 | // visible area in some controls | |
912 | if ( wxWindow::GetCapture() == m_targetWindow ) | |
913 | { | |
914 | // where is the mouse leaving? | |
915 | int pos, orient; | |
916 | wxPoint pt = event.GetPosition(); | |
917 | if ( pt.x < 0 ) | |
918 | { | |
919 | orient = wxHORIZONTAL; | |
920 | pos = 0; | |
921 | } | |
922 | else if ( pt.y < 0 ) | |
923 | { | |
924 | orient = wxVERTICAL; | |
925 | pos = 0; | |
926 | } | |
927 | else // we're lower or to the right of the window | |
928 | { | |
929 | wxSize size = m_targetWindow->GetClientSize(); | |
930 | if ( pt.x > size.x ) | |
931 | { | |
932 | orient = wxHORIZONTAL; | |
933 | pos = m_xScrollLines; | |
934 | } | |
935 | else if ( pt.y > size.y ) | |
936 | { | |
937 | orient = wxVERTICAL; | |
938 | pos = m_yScrollLines; | |
939 | } | |
940 | else // this should be impossible | |
941 | { | |
942 | // but seems to happen sometimes under wxMSW - maybe it's a bug | |
943 | // there but for now just ignore it | |
944 | ||
945 | //wxFAIL_MSG( _T("can't understand where has mouse gone") ); | |
946 | ||
947 | return; | |
948 | } | |
949 | } | |
950 | ||
951 | // only start the auto scroll timer if the window can be scrolled in | |
952 | // this direction | |
953 | if ( !m_targetWindow->HasScrollbar(orient) ) | |
954 | return; | |
955 | ||
956 | delete m_timerAutoScroll; | |
957 | m_timerAutoScroll = new wxAutoScrollTimer | |
958 | ( | |
959 | m_targetWindow, this, | |
960 | pos == 0 ? wxEVT_SCROLLWIN_LINEUP | |
961 | : wxEVT_SCROLLWIN_LINEDOWN, | |
962 | pos, | |
963 | orient | |
964 | ); | |
965 | m_timerAutoScroll->Start(50); // FIXME: make configurable | |
966 | } | |
967 | } | |
968 | ||
e421922f VZ |
969 | #if wxUSE_MOUSEWHEEL |
970 | ||
1e6feb95 VZ |
971 | void wxScrollHelper::HandleOnMouseWheel(wxMouseEvent& event) |
972 | { | |
d2c52078 | 973 | m_wheelRotation += event.GetWheelRotation(); |
1e6feb95 | 974 | int lines = m_wheelRotation / event.GetWheelDelta(); |
d2c52078 RD |
975 | m_wheelRotation -= lines * event.GetWheelDelta(); |
976 | ||
1e6feb95 VZ |
977 | if (lines != 0) |
978 | { | |
d2c52078 | 979 | lines *= event.GetLinesPerAction(); |
1e6feb95 VZ |
980 | |
981 | int vsx, vsy; | |
d2c52078 RD |
982 | GetViewStart(&vsx, &vsy); |
983 | Scroll(-1, vsy - lines); | |
984 | } | |
985 | } | |
986 | ||
e421922f VZ |
987 | #endif // wxUSE_MOUSEWHEEL |
988 | ||
1e6feb95 VZ |
989 | // ---------------------------------------------------------------------------- |
990 | // wxGenericScrolledWindow implementation | |
991 | // ---------------------------------------------------------------------------- | |
992 | ||
993 | IMPLEMENT_DYNAMIC_CLASS(wxGenericScrolledWindow, wxPanel) | |
994 | ||
995 | bool wxGenericScrolledWindow::Create(wxWindow *parent, | |
996 | wxWindowID id, | |
997 | const wxPoint& pos, | |
998 | const wxSize& size, | |
999 | long style, | |
1000 | const wxString& name) | |
1001 | { | |
1002 | m_targetWindow = this; | |
1003 | ||
1004 | bool ok = wxPanel::Create(parent, id, pos, size, style, name); | |
1005 | ||
1006 | #ifdef __WXMSW__ | |
1007 | // we need to process arrows ourselves for scrolling | |
1008 | m_lDlgCode |= DLGC_WANTARROWS; | |
1009 | #endif // __WXMSW__ | |
1010 | ||
1011 | return ok; | |
1012 | } | |
1013 | ||
1014 | wxGenericScrolledWindow::~wxGenericScrolledWindow() | |
1015 | { | |
1016 | } | |
d2c52078 | 1017 | |
1e6feb95 VZ |
1018 | #if WXWIN_COMPATIBILITY |
1019 | void wxGenericScrolledWindow::GetScrollUnitsPerPage (int *x_page, int *y_page) const | |
1020 | { | |
1021 | *x_page = GetScrollPageSize(wxHORIZONTAL); | |
1022 | *y_page = GetScrollPageSize(wxVERTICAL); | |
1023 | } | |
d2c52078 | 1024 | |
1e6feb95 VZ |
1025 | void wxGenericScrolledWindow::CalcUnscrolledPosition(int x, int y, float *xx, float *yy) const |
1026 | { | |
1027 | if ( xx ) | |
1028 | *xx = (float)(x + m_xScrollPosition * m_xScrollPixelsPerLine); | |
1029 | if ( yy ) | |
1030 | *yy = (float)(y + m_yScrollPosition * m_yScrollPixelsPerLine); | |
1031 | } | |
1032 | #endif // WXWIN_COMPATIBILITY | |
d2c52078 | 1033 | |
3a8c693a VZ |
1034 | #endif // !wxGTK |
1035 |