projects / wxWidgets.git / blob
? search:
summary | shortlog | log | commit | commitdiff | tree
blame | history | raw | HEAD
move widget resize handling from DoSetSize to DoMoveWindow
[wxWidgets.git] / src / gtk / window.cpp
1 /////////////////////////////////////////////////////////////////////////////
2 // Name: src/gtk/window.cpp
3 // Purpose: wxWindowGTK implementation
4 // Author: Robert Roebling
5 // Id: $Id$
6 // Copyright: (c) 1998 Robert Roebling, Julian Smart
7 // Licence: wxWindows licence
8 /////////////////////////////////////////////////////////////////////////////
9
10 // For compilers that support precompilation, includes "wx.h".
11 #include "wx/wxprec.h"
12
13 #ifdef __VMS
14 #define XWarpPointer XWARPPOINTER
15 #endif
16
17 #include "wx/window.h"
18
19 #ifndef WX_PRECOMP
20 #include "wx/log.h"
21 #include "wx/app.h"
22 #include "wx/toplevel.h"
23 #include "wx/dcclient.h"
24 #include "wx/menu.h"
25 #include "wx/settings.h"
26 #include "wx/msgdlg.h"
27 #include "wx/math.h"
28 #endif
29
30 #include "wx/dnd.h"
31 #include "wx/tooltip.h"
32 #include "wx/caret.h"
33 #include "wx/fontutil.h"
34 #include "wx/scopeguard.h"
35 #include "wx/sysopt.h"
36
37 #include <ctype.h>
38
39 #include "wx/gtk/private.h"
40 #include "wx/gtk/private/win_gtk.h"
41 #include "wx/gtk/private/event.h"
42 using namespace wxGTKImpl;
43
44 #ifdef GDK_WINDOWING_X11
45 #include <gdk/gdkx.h>
46 #else
47 typedef guint KeySym;
48 #endif
49
50 #include <gdk/gdkkeysyms.h>
51 #if GTK_CHECK_VERSION(3,0,0)
52 #include <gdk/gdkkeysyms-compat.h>
53 #endif
54
55 // gdk_window_set_composited() is only supported since 2.12
56 #define wxGTK_VERSION_REQUIRED_FOR_COMPOSITING 2,12,0
57 #define wxGTK_HAS_COMPOSITING_SUPPORT GTK_CHECK_VERSION(2,12,0)
58
59 //-----------------------------------------------------------------------------
60 // documentation on internals
61 //-----------------------------------------------------------------------------
62
63 /*
64 I have been asked several times about writing some documentation about
65 the GTK port of wxWidgets, especially its internal structures. Obviously,
66 you cannot understand wxGTK without knowing a little about the GTK, but
67 some more information about what the wxWindow, which is the base class
68 for all other window classes, does seems required as well.
69
70 I)
71
72 What does wxWindow do? It contains the common interface for the following
73 jobs of its descendants:
74
75 1) Define the rudimentary behaviour common to all window classes, such as
76 resizing, intercepting user input (so as to make it possible to use these
77 events for special purposes in a derived class), window names etc.
78
79 2) Provide the possibility to contain and manage children, if the derived
80 class is allowed to contain children, which holds true for those window
81 classes which do not display a native GTK widget. To name them, these
82 classes are wxPanel, wxScrolledWindow, wxDialog, wxFrame. The MDI frame-
83 work classes are a special case and are handled a bit differently from
84 the rest. The same holds true for the wxNotebook class.
85
86 3) Provide the possibility to draw into a client area of a window. This,
87 too, only holds true for classes that do not display a native GTK widget
88 as above.
89
90 4) Provide the entire mechanism for scrolling widgets. This actual inter-
91 face for this is usually in wxScrolledWindow, but the GTK implementation
92 is in this class.
93
94 5) A multitude of helper or extra methods for special purposes, such as
95 Drag'n'Drop, managing validators etc.
96
97 6) Display a border (sunken, raised, simple or none).
98
99 Normally one might expect, that one wxWidgets window would always correspond
100 to one GTK widget. Under GTK, there is no such all-round widget that has all
101 the functionality. Moreover, the GTK defines a client area as a different
102 widget from the actual widget you are handling. Last but not least some
103 special classes (e.g. wxFrame) handle different categories of widgets and
104 still have the possibility to draw something in the client area.
105 It was therefore required to write a special purpose GTK widget, that would
106 represent a client area in the sense of wxWidgets capable to do the jobs
107 2), 3) and 4). I have written this class and it resides in win_gtk.c of
108 this directory.
109
110 All windows must have a widget, with which they interact with other under-
111 lying GTK widgets. It is this widget, e.g. that has to be resized etc and
112 the wxWindow class has a member variable called m_widget which holds a
113 pointer to this widget. When the window class represents a GTK native widget,
114 this is (in most cases) the only GTK widget the class manages. E.g. the
115 wxStaticText class handles only a GtkLabel widget a pointer to which you
116 can find in m_widget (defined in wxWindow)
117
118 When the class has a client area for drawing into and for containing children
119 it has to handle the client area widget (of the type wxPizza, defined in
120 win_gtk.cpp), but there could be any number of widgets, handled by a class.
121 The common rule for all windows is only, that the widget that interacts with
122 the rest of GTK must be referenced in m_widget and all other widgets must be
123 children of this widget on the GTK level. The top-most widget, which also
124 represents the client area, must be in the m_wxwindow field and must be of
125 the type wxPizza.
126
127 As I said, the window classes that display a GTK native widget only have
128 one widget, so in the case of e.g. the wxButton class m_widget holds a
129 pointer to a GtkButton widget. But windows with client areas (for drawing
130 and children) have a m_widget field that is a pointer to a GtkScrolled-
131 Window and a m_wxwindow field that is pointer to a wxPizza and this
132 one is (in the GTK sense) a child of the GtkScrolledWindow.
133
134 If the m_wxwindow field is set, then all input to this widget is inter-
135 cepted and sent to the wxWidgets class. If not, all input to the widget
136 that gets pointed to by m_widget gets intercepted and sent to the class.
137
138 II)
139
140 The design of scrolling in wxWidgets is markedly different from that offered
141 by the GTK itself and therefore we cannot simply take it as it is. In GTK,
142 clicking on a scrollbar belonging to scrolled window will inevitably move
143 the window. In wxWidgets, the scrollbar will only emit an event, send this
144 to (normally) a wxScrolledWindow and that class will call ScrollWindow()
145 which actually moves the window and its sub-windows. Note that wxPizza
146 memorizes how much it has been scrolled but that wxWidgets forgets this
147 so that the two coordinates systems have to be kept in synch. This is done
148 in various places using the pizza->m_scroll_x and pizza->m_scroll_y values.
149
150 III)
151
152 Singularly the most broken code in GTK is the code that is supposed to
153 inform subwindows (child windows) about new positions. Very often, duplicate
154 events are sent without changes in size or position, equally often no
155 events are sent at all (All this is due to a bug in the GtkContainer code
156 which got fixed in GTK 1.2.6). For that reason, wxGTK completely ignores
157 GTK's own system and it simply waits for size events for toplevel windows
158 and then iterates down the respective size events to all window. This has
159 the disadvantage that windows might get size events before the GTK widget
160 actually has the reported size. This doesn't normally pose any problem, but
161 the OpenGL drawing routines rely on correct behaviour. Therefore, I have
162 added the m_nativeSizeEvents flag, which is true only for the OpenGL canvas,
163 i.e. the wxGLCanvas will emit a size event, when (and not before) the X11
164 window that is used for OpenGL output really has that size (as reported by
165 GTK).
166
167 IV)
168
169 If someone at some point of time feels the immense desire to have a look at,
170 change or attempt to optimise the Refresh() logic, this person will need an
171 intimate understanding of what "draw" and "expose" events are and what
172 they are used for, in particular when used in connection with GTK's
173 own windowless widgets. Beware.
174
175 V)
176
177 Cursors, too, have been a constant source of pleasure. The main difficulty
178 is that a GdkWindow inherits a cursor if the programmer sets a new cursor
179 for the parent. To prevent this from doing too much harm, SetCursor calls
180 GTKUpdateCursor, which will recursively re-set the cursors of all child windows.
181 Also don't forget that cursors (like much else) are connected to GdkWindows,
182 not GtkWidgets and that the "window" field of a GtkWidget might very well
183 point to the GdkWindow of the parent widget (-> "window-less widget") and
184 that the two obviously have very different meanings.
185 */
186
187 //-----------------------------------------------------------------------------
188 // data
189 //-----------------------------------------------------------------------------
190
191 // Don't allow event propagation during drag
192 bool g_blockEventsOnDrag;
193 // Don't allow mouse event propagation during scroll
194 bool g_blockEventsOnScroll;
195 extern wxCursor g_globalCursor;
196
197 // mouse capture state: the window which has it and if the mouse is currently
198 // inside it
199 static wxWindowGTK *g_captureWindow = NULL;
200 static bool g_captureWindowHasMouse = false;
201
202 // The window that currently has focus:
203 static wxWindowGTK *gs_currentFocus = NULL;
204 // The window that is scheduled to get focus in the next event loop iteration
205 // or NULL if there's no pending focus change:
206 static wxWindowGTK *gs_pendingFocus = NULL;
207
208 // the window that has deferred focus-out event pending, if any (see
209 // GTKAddDeferredFocusOut() for details)
210 static wxWindowGTK *gs_deferredFocusOut = NULL;
211
212 // global variables because GTK+ DnD want to have the
213 // mouse event that caused it
214 GdkEvent *g_lastMouseEvent = NULL;
215 int g_lastButtonNumber = 0;
216
217 //-----------------------------------------------------------------------------
218 // debug
219 //-----------------------------------------------------------------------------
220
221 // the trace mask used for the focus debugging messages
222 #define TRACE_FOCUS wxT("focus")
223
224 //-----------------------------------------------------------------------------
225 // "size_request" of m_widget
226 //-----------------------------------------------------------------------------
227
228 extern "C" {
229 static void
230 wxgtk_window_size_request_callback(GtkWidget * WXUNUSED(widget),
231 GtkRequisition *requisition,
232 wxWindow * win)
233 {
234 int w, h;
235 win->GetSize( &w, &h );
236 if (w < 2)
237 w = 2;
238 if (h < 2)
239 h = 2;
240
241 requisition->height = h;
242 requisition->width = w;
243 }
244 }
245
246 //-----------------------------------------------------------------------------
247 // "expose_event" of m_wxwindow
248 //-----------------------------------------------------------------------------
249
250 extern "C" {
251 static gboolean
252 gtk_window_expose_callback( GtkWidget*,
253 GdkEventExpose *gdk_event,
254 wxWindow *win )
255 {
256 if (gdk_event->window == win->GTKGetDrawingWindow())
257 {
258 win->GetUpdateRegion() = wxRegion( gdk_event->region );
259 win->GtkSendPaintEvents();
260 }
261 // Let parent window draw window-less widgets
262 return FALSE;
263 }
264 }
265
266 #ifndef __WXUNIVERSAL__
267 //-----------------------------------------------------------------------------
268 // "expose_event" from m_wxwindow->parent, for drawing border
269 //-----------------------------------------------------------------------------
270
271 extern "C" {
272 static gboolean
273 expose_event_border(GtkWidget* widget, GdkEventExpose* gdk_event, wxWindow* win)
274 {
275 if (gdk_event->window != gtk_widget_get_parent_window(win->m_wxwindow))
276 return false;
277
278 if (!win->IsShown())
279 return false;
280
281 GtkAllocation alloc;
282 gtk_widget_get_allocation(win->m_wxwindow, &alloc);
283 const int x = alloc.x;
284 const int y = alloc.y;
285 const int w = alloc.width;
286 const int h = alloc.height;
287
288 if (w <= 0 || h <= 0)
289 return false;
290
291 if (win->HasFlag(wxBORDER_SIMPLE))
292 {
293 gdk_draw_rectangle(gdk_event->window,
294 gtk_widget_get_style(widget)->black_gc, false, x, y, w - 1, h - 1);
295 }
296 else
297 {
298 GtkShadowType shadow = GTK_SHADOW_IN;
299 if (win->HasFlag(wxBORDER_RAISED))
300 shadow = GTK_SHADOW_OUT;
301
302 // Style detail to use
303 const char* detail;
304 if (win->m_widget == win->m_wxwindow)
305 // for non-scrollable wxWindows
306 detail = "entry";
307 else
308 // for scrollable ones
309 detail = "viewport";
310
311 // clip rect is required to avoid painting background
312 // over upper left (w,h) of parent window
313 GdkRectangle clipRect = { x, y, w, h };
314 gtk_paint_shadow(
315 gtk_widget_get_style(win->m_wxwindow), gdk_event->window, GTK_STATE_NORMAL,
316 shadow, &clipRect, wxGTKPrivate::GetEntryWidget(), detail, x, y, w, h);
317 }
318 return false;
319 }
320 }
321
322 //-----------------------------------------------------------------------------
323 // "parent_set" from m_wxwindow
324 //-----------------------------------------------------------------------------
325
326 extern "C" {
327 static void
328 parent_set(GtkWidget* widget, GtkWidget* old_parent, wxWindow* win)
329 {
330 if (old_parent)
331 {
332 g_signal_handlers_disconnect_by_func(
333 old_parent, (void*)expose_event_border, win);
334 }
335 GtkWidget* parent = gtk_widget_get_parent(widget);
336 if (parent)
337 {
338 g_signal_connect_after(parent, "expose_event",
339 G_CALLBACK(expose_event_border), win);
340 }
341 }
342 }
343 #endif // !__WXUNIVERSAL__
344
345 //-----------------------------------------------------------------------------
346 // "key_press_event" from any window
347 //-----------------------------------------------------------------------------
348
349 // set WXTRACE to this to see the key event codes on the console
350 #define TRACE_KEYS wxT("keyevent")
351
352 // translates an X key symbol to WXK_XXX value
353 //
354 // if isChar is true it means that the value returned will be used for EVT_CHAR
355 // event and then we choose the logical WXK_XXX, i.e. '/' for GDK_KP_Divide,
356 // for example, while if it is false it means that the value is going to be
357 // used for KEY_DOWN/UP events and then we translate GDK_KP_Divide to
358 // WXK_NUMPAD_DIVIDE
359 static long wxTranslateKeySymToWXKey(KeySym keysym, bool isChar)
360 {
361 long key_code;
362
363 switch ( keysym )
364 {
365 // Shift, Control and Alt don't generate the CHAR events at all
366 case GDK_Shift_L:
367 case GDK_Shift_R:
368 key_code = isChar ? 0 : WXK_SHIFT;
369 break;
370 case GDK_Control_L:
371 case GDK_Control_R:
372 key_code = isChar ? 0 : WXK_CONTROL;
373 break;
374 case GDK_Meta_L:
375 case GDK_Meta_R:
376 case GDK_Alt_L:
377 case GDK_Alt_R:
378 case GDK_Super_L:
379 case GDK_Super_R:
380 key_code = isChar ? 0 : WXK_ALT;
381 break;
382
383 // neither do the toggle modifies
384 case GDK_Scroll_Lock:
385 key_code = isChar ? 0 : WXK_SCROLL;
386 break;
387
388 case GDK_Caps_Lock:
389 key_code = isChar ? 0 : WXK_CAPITAL;
390 break;
391
392 case GDK_Num_Lock:
393 key_code = isChar ? 0 : WXK_NUMLOCK;
394 break;
395
396
397 // various other special keys
398 case GDK_Menu:
399 key_code = WXK_MENU;
400 break;
401
402 case GDK_Help:
403 key_code = WXK_HELP;
404 break;
405
406 case GDK_BackSpace:
407 key_code = WXK_BACK;
408 break;
409
410 case GDK_ISO_Left_Tab:
411 case GDK_Tab:
412 key_code = WXK_TAB;
413 break;
414
415 case GDK_Linefeed:
416 case GDK_Return:
417 key_code = WXK_RETURN;
418 break;
419
420 case GDK_Clear:
421 key_code = WXK_CLEAR;
422 break;
423
424 case GDK_Pause:
425 key_code = WXK_PAUSE;
426 break;
427
428 case GDK_Select:
429 key_code = WXK_SELECT;
430 break;
431
432 case GDK_Print:
433 key_code = WXK_PRINT;
434 break;
435
436 case GDK_Execute:
437 key_code = WXK_EXECUTE;
438 break;
439
440 case GDK_Escape:
441 key_code = WXK_ESCAPE;
442 break;
443
444 // cursor and other extended keyboard keys
445 case GDK_Delete:
446 key_code = WXK_DELETE;
447 break;
448
449 case GDK_Home:
450 key_code = WXK_HOME;
451 break;
452
453 case GDK_Left:
454 key_code = WXK_LEFT;
455 break;
456
457 case GDK_Up:
458 key_code = WXK_UP;
459 break;
460
461 case GDK_Right:
462 key_code = WXK_RIGHT;
463 break;
464
465 case GDK_Down:
466 key_code = WXK_DOWN;
467 break;
468
469 case GDK_Prior: // == GDK_Page_Up
470 key_code = WXK_PAGEUP;
471 break;
472
473 case GDK_Next: // == GDK_Page_Down
474 key_code = WXK_PAGEDOWN;
475 break;
476
477 case GDK_End:
478 key_code = WXK_END;
479 break;
480
481 case GDK_Begin:
482 key_code = WXK_HOME;
483 break;
484
485 case GDK_Insert:
486 key_code = WXK_INSERT;
487 break;
488
489
490 // numpad keys
491 case GDK_KP_0:
492 case GDK_KP_1:
493 case GDK_KP_2:
494 case GDK_KP_3:
495 case GDK_KP_4:
496 case GDK_KP_5:
497 case GDK_KP_6:
498 case GDK_KP_7:
499 case GDK_KP_8:
500 case GDK_KP_9:
501 key_code = (isChar ? '0' : int(WXK_NUMPAD0)) + keysym - GDK_KP_0;
502 break;
503
504 case GDK_KP_Space:
505 key_code = isChar ? ' ' : int(WXK_NUMPAD_SPACE);
506 break;
507
508 case GDK_KP_Tab:
509 key_code = isChar ? WXK_TAB : WXK_NUMPAD_TAB;
510 break;
511
512 case GDK_KP_Enter:
513 key_code = isChar ? WXK_RETURN : WXK_NUMPAD_ENTER;
514 break;
515
516 case GDK_KP_F1:
517 key_code = isChar ? WXK_F1 : WXK_NUMPAD_F1;
518 break;
519
520 case GDK_KP_F2:
521 key_code = isChar ? WXK_F2 : WXK_NUMPAD_F2;
522 break;
523
524 case GDK_KP_F3:
525 key_code = isChar ? WXK_F3 : WXK_NUMPAD_F3;
526 break;
527
528 case GDK_KP_F4:
529 key_code = isChar ? WXK_F4 : WXK_NUMPAD_F4;
530 break;
531
532 case GDK_KP_Home:
533 key_code = isChar ? WXK_HOME : WXK_NUMPAD_HOME;
534 break;
535
536 case GDK_KP_Left:
537 key_code = isChar ? WXK_LEFT : WXK_NUMPAD_LEFT;
538 break;
539
540 case GDK_KP_Up:
541 key_code = isChar ? WXK_UP : WXK_NUMPAD_UP;
542 break;
543
544 case GDK_KP_Right:
545 key_code = isChar ? WXK_RIGHT : WXK_NUMPAD_RIGHT;
546 break;
547
548 case GDK_KP_Down:
549 key_code = isChar ? WXK_DOWN : WXK_NUMPAD_DOWN;
550 break;
551
552 case GDK_KP_Prior: // == GDK_KP_Page_Up
553 key_code = isChar ? WXK_PAGEUP : WXK_NUMPAD_PAGEUP;
554 break;
555
556 case GDK_KP_Next: // == GDK_KP_Page_Down
557 key_code = isChar ? WXK_PAGEDOWN : WXK_NUMPAD_PAGEDOWN;
558 break;
559
560 case GDK_KP_End:
561 key_code = isChar ? WXK_END : WXK_NUMPAD_END;
562 break;
563
564 case GDK_KP_Begin:
565 key_code = isChar ? WXK_HOME : WXK_NUMPAD_BEGIN;
566 break;
567
568 case GDK_KP_Insert:
569 key_code = isChar ? WXK_INSERT : WXK_NUMPAD_INSERT;
570 break;
571
572 case GDK_KP_Delete:
573 key_code = isChar ? WXK_DELETE : WXK_NUMPAD_DELETE;
574 break;
575
576 case GDK_KP_Equal:
577 key_code = isChar ? '=' : int(WXK_NUMPAD_EQUAL);
578 break;
579
580 case GDK_KP_Multiply:
581 key_code = isChar ? '*' : int(WXK_NUMPAD_MULTIPLY);
582 break;
583
584 case GDK_KP_Add:
585 key_code = isChar ? '+' : int(WXK_NUMPAD_ADD);
586 break;
587
588 case GDK_KP_Separator:
589 // FIXME: what is this?
590 key_code = isChar ? '.' : int(WXK_NUMPAD_SEPARATOR);
591 break;
592
593 case GDK_KP_Subtract:
594 key_code = isChar ? '-' : int(WXK_NUMPAD_SUBTRACT);
595 break;
596
597 case GDK_KP_Decimal:
598 key_code = isChar ? '.' : int(WXK_NUMPAD_DECIMAL);
599 break;
600
601 case GDK_KP_Divide:
602 key_code = isChar ? '/' : int(WXK_NUMPAD_DIVIDE);
603 break;
604
605
606 // function keys
607 case GDK_F1:
608 case GDK_F2:
609 case GDK_F3:
610 case GDK_F4:
611 case GDK_F5:
612 case GDK_F6:
613 case GDK_F7:
614 case GDK_F8:
615 case GDK_F9:
616 case GDK_F10:
617 case GDK_F11:
618 case GDK_F12:
619 key_code = WXK_F1 + keysym - GDK_F1;
620 break;
621
622 default:
623 key_code = 0;
624 }
625
626 return key_code;
627 }
628
629 static inline bool wxIsAsciiKeysym(KeySym ks)
630 {
631 return ks < 256;
632 }
633
634 static void wxFillOtherKeyEventFields(wxKeyEvent& event,
635 wxWindowGTK *win,
636 GdkEventKey *gdk_event)
637 {
638 event.SetTimestamp( gdk_event->time );
639 event.SetId(win->GetId());
640
641 event.m_shiftDown = (gdk_event->state & GDK_SHIFT_MASK) != 0;
642 event.m_controlDown = (gdk_event->state & GDK_CONTROL_MASK) != 0;
643 event.m_altDown = (gdk_event->state & GDK_MOD1_MASK) != 0;
644 event.m_metaDown = (gdk_event->state & GDK_META_MASK) != 0;
645
646 // Normally we take the state of modifiers directly from the low level GDK
647 // event but unfortunately GDK uses a different convention from MSW for the
648 // key events corresponding to the modifier keys themselves: in it, when
649 // e.g. Shift key is pressed, GDK_SHIFT_MASK is not set while it is set
650 // when Shift is released. Under MSW the situation is exactly reversed and
651 // the modifier corresponding to the key is set when it is pressed and
652 // unset when it is released. To ensure consistent behaviour between
653 // platforms (and because it seems to make slightly more sense, although
654 // arguably both behaviours are reasonable) we follow MSW here.
655 //
656 // Final notice: we set the flags to the desired value instead of just
657 // inverting them because they are not set correctly (i.e. in the same way
658 // as for the real events generated by the user) for wxUIActionSimulator-
659 // produced events and it seems better to keep that class code the same
660 // among all platforms and fix the discrepancy here instead of adding
661 // wxGTK-specific code to wxUIActionSimulator.
662 const bool isPress = gdk_event->type == GDK_KEY_PRESS;
663 switch ( gdk_event->keyval )
664 {
665 case GDK_Shift_L:
666 case GDK_Shift_R:
667 event.m_shiftDown = isPress;
668 break;
669
670 case GDK_Control_L:
671 case GDK_Control_R:
672 event.m_controlDown = isPress;
673 break;
674
675 case GDK_Alt_L:
676 case GDK_Alt_R:
677 event.m_altDown = isPress;
678 break;
679
680 case GDK_Meta_L:
681 case GDK_Meta_R:
682 case GDK_Super_L:
683 case GDK_Super_R:
684 event.m_metaDown = isPress;
685 break;
686 }
687
688 event.m_rawCode = (wxUint32) gdk_event->keyval;
689 event.m_rawFlags = gdk_event->hardware_keycode;
690
691 wxGetMousePosition(&event.m_x, &event.m_y);
692 win->ScreenToClient(&event.m_x, &event.m_y);
693 event.SetEventObject( win );
694 }
695
696
697 static bool
698 wxTranslateGTKKeyEventToWx(wxKeyEvent& event,
699 wxWindowGTK *win,
700 GdkEventKey *gdk_event)
701 {
702 // VZ: it seems that GDK_KEY_RELEASE event doesn't set event->string
703 // but only event->keyval which is quite useless to us, so remember
704 // the last character from GDK_KEY_PRESS and reuse it as last resort
705 //
706 // NB: should be MT-safe as we're always called from the main thread only
707 static struct
708 {
709 KeySym keysym;
710 long keycode;
711 } s_lastKeyPress = { 0, 0 };
712
713 KeySym keysym = gdk_event->keyval;
714
715 wxLogTrace(TRACE_KEYS, wxT("Key %s event: keysym = %ld"),
716 event.GetEventType() == wxEVT_KEY_UP ? wxT("release")
717 : wxT("press"),
718 keysym);
719
720 long key_code = wxTranslateKeySymToWXKey(keysym, false /* !isChar */);
721
722 if ( !key_code )
723 {
724 // do we have the translation or is it a plain ASCII character?
725 if ( (gdk_event->length == 1) || wxIsAsciiKeysym(keysym) )
726 {
727 // we should use keysym if it is ASCII as X does some translations
728 // like "I pressed while Control is down" => "Ctrl-I" == "TAB"
729 // which we don't want here (but which we do use for OnChar())
730 if ( !wxIsAsciiKeysym(keysym) )
731 {
732 keysym = (KeySym)gdk_event->string[0];
733 }
734
735 #ifdef GDK_WINDOWING_X11
736 // we want to always get the same key code when the same key is
737 // pressed regardless of the state of the modifiers, i.e. on a
738 // standard US keyboard pressing '5' or '%' ('5' key with
739 // Shift) should result in the same key code in OnKeyDown():
740 // '5' (although OnChar() will get either '5' or '%').
741 //
742 // to do it we first translate keysym to keycode (== scan code)
743 // and then back but always using the lower register
744 Display *dpy = (Display *)wxGetDisplay();
745 KeyCode keycode = XKeysymToKeycode(dpy, keysym);
746
747 wxLogTrace(TRACE_KEYS, wxT("\t-> keycode %d"), keycode);
748
749 KeySym keysymNormalized = XKeycodeToKeysym(dpy, keycode, 0);
750
751 // use the normalized, i.e. lower register, keysym if we've
752 // got one
753 key_code = keysymNormalized ? keysymNormalized : keysym;
754 #else
755 key_code = keysym;
756 #endif
757
758 // as explained above, we want to have lower register key codes
759 // normally but for the letter keys we want to have the upper ones
760 //
761 // NB: don't use XConvertCase() here, we want to do it for letters
762 // only
763 key_code = toupper(key_code);
764 }
765 else // non ASCII key, what to do?
766 {
767 // by default, ignore it
768 key_code = 0;
769
770 // but if we have cached information from the last KEY_PRESS
771 if ( gdk_event->type == GDK_KEY_RELEASE )
772 {
773 // then reuse it
774 if ( keysym == s_lastKeyPress.keysym )
775 {
776 key_code = s_lastKeyPress.keycode;
777 }
778 }
779 }
780
781 if ( gdk_event->type == GDK_KEY_PRESS )
782 {
783 // remember it to be reused for KEY_UP event later
784 s_lastKeyPress.keysym = keysym;
785 s_lastKeyPress.keycode = key_code;
786 }
787 }
788
789 wxLogTrace(TRACE_KEYS, wxT("\t-> wxKeyCode %ld"), key_code);
790
791 // sending unknown key events doesn't really make sense
792 if ( !key_code )
793 return false;
794
795 event.m_keyCode = key_code;
796
797 #if wxUSE_UNICODE
798 event.m_uniChar = gdk_keyval_to_unicode(key_code ? key_code : keysym);
799 if ( !event.m_uniChar && event.m_keyCode <= WXK_DELETE )
800 {
801 // Set Unicode key code to the ASCII equivalent for compatibility. E.g.
802 // let RETURN generate the key event with both key and Unicode key
803 // codes of 13.
804 event.m_uniChar = event.m_keyCode;
805 }
806 #endif // wxUSE_UNICODE
807
808 // now fill all the other fields
809 wxFillOtherKeyEventFields(event, win, gdk_event);
810
811 return true;
812 }
813
814
815 struct wxGtkIMData
816 {
817 GtkIMContext *context;
818 GdkEventKey *lastKeyEvent;
819
820 wxGtkIMData()
821 {
822 context = gtk_im_multicontext_new();
823 lastKeyEvent = NULL;
824 }
825 ~wxGtkIMData()
826 {
827 g_object_unref (context);
828 }
829 };
830
831 namespace
832 {
833
834 // Send wxEVT_CHAR_HOOK event to the parent of the window and return true only
835 // if it was processed (and not skipped).
836 bool SendCharHookEvent(const wxKeyEvent& event, wxWindow *win)
837 {
838 // wxEVT_CHAR_HOOK must be sent to allow the parent windows (e.g. a dialog
839 // which typically closes when Esc key is pressed in any of its controls)
840 // to handle key events in all of its children unless the mouse is captured
841 // in which case we consider that the keyboard should be "captured" too.
842 if ( !g_captureWindow )
843 {
844 wxKeyEvent eventCharHook(wxEVT_CHAR_HOOK, event);
845 if ( win->HandleWindowEvent(eventCharHook)
846 && !event.IsNextEventAllowed() )
847 return true;
848 }
849
850 return false;
851 }
852
853 // Adjust wxEVT_CHAR event key code fields. This function takes care of two
854 // conventions:
855 // (a) Ctrl-letter key presses generate key codes in range 1..26
856 // (b) Unicode key codes are same as key codes for the codes in 1..255 range
857 void AdjustCharEventKeyCodes(wxKeyEvent& event)
858 {
859 const int code = event.m_keyCode;
860
861 // Check for (a) above.
862 if ( event.ControlDown() )
863 {
864 // We intentionally don't use isupper/lower() here, we really need
865 // ASCII letters only as it doesn't make sense to translate any other
866 // ones into this range which has only 26 slots.
867 if ( code >= 'a' && code <= 'z' )
868 event.m_keyCode = code - 'a' + 1;
869 else if ( code >= 'A' && code <= 'Z' )
870 event.m_keyCode = code - 'A' + 1;
871
872 #if wxUSE_UNICODE
873 // Adjust the Unicode equivalent in the same way too.
874 if ( event.m_keyCode != code )
875 event.m_uniChar = event.m_keyCode;
876 #endif // wxUSE_UNICODE
877 }
878
879 #if wxUSE_UNICODE
880 // Check for (b) from above.
881 //
882 // FIXME: Should we do it for key codes up to 255?
883 if ( !event.m_uniChar && code < WXK_DELETE )
884 event.m_uniChar = code;
885 #endif // wxUSE_UNICODE
886 }
887
888 } // anonymous namespace
889
890 // If a widget does not handle a key or mouse event, GTK+ sends it up the
891 // parent chain until it is handled. These events are not supposed to propagate
892 // in wxWidgets, so this code avoids handling them in any parent wxWindow,
893 // while still allowing the event to propagate so things like native keyboard
894 // navigation will work.
895 #define wxPROCESS_EVENT_ONCE(EventType, event) \
896 static EventType eventPrev; \
897 if (memcmp(&eventPrev, event, sizeof(EventType)) == 0) \
898 return false; \
899 eventPrev = *event
900
901 extern "C" {
902 static gboolean
903 gtk_window_key_press_callback( GtkWidget *WXUNUSED(widget),
904 GdkEventKey *gdk_event,
905 wxWindow *win )
906 {
907 if (!win->m_hasVMT)
908 return FALSE;
909 if (g_blockEventsOnDrag)
910 return FALSE;
911
912 wxPROCESS_EVENT_ONCE(GdkEventKey, gdk_event);
913
914 wxKeyEvent event( wxEVT_KEY_DOWN );
915 bool ret = false;
916 bool return_after_IM = false;
917
918 if( wxTranslateGTKKeyEventToWx(event, win, gdk_event) )
919 {
920 // Send the CHAR_HOOK event first
921 if ( SendCharHookEvent(event, win) )
922 {
923 // Don't do anything at all with this event any more.
924 return TRUE;
925 }
926
927 // Emit KEY_DOWN event
928 ret = win->HandleWindowEvent( event );
929 }
930 else
931 {
932 // Return after IM processing as we cannot do
933 // anything with it anyhow.
934 return_after_IM = true;
935 }
936
937 if (!ret && win->m_imData)
938 {
939 win->m_imData->lastKeyEvent = gdk_event;
940
941 // We should let GTK+ IM filter key event first. According to GTK+ 2.0 API
942 // docs, if IM filter returns true, no further processing should be done.
943 // we should send the key_down event anyway.
944 bool intercepted_by_IM = gtk_im_context_filter_keypress(win->m_imData->context, gdk_event);
945 win->m_imData->lastKeyEvent = NULL;
946 if (intercepted_by_IM)
947 {
948 wxLogTrace(TRACE_KEYS, wxT("Key event intercepted by IM"));
949 return TRUE;
950 }
951 }
952
953 if (return_after_IM)
954 return FALSE;
955
956 #if wxUSE_ACCEL
957 if (!ret)
958 {
959 wxWindowGTK *ancestor = win;
960 while (ancestor)
961 {
962 int command = ancestor->GetAcceleratorTable()->GetCommand( event );
963 if (command != -1)
964 {
965 wxCommandEvent menu_event( wxEVT_COMMAND_MENU_SELECTED, command );
966 ret = ancestor->HandleWindowEvent( menu_event );
967
968 if ( !ret )
969 {
970 // if the accelerator wasn't handled as menu event, try
971 // it as button click (for compatibility with other
972 // platforms):
973 wxCommandEvent button_event( wxEVT_COMMAND_BUTTON_CLICKED, command );
974 ret = ancestor->HandleWindowEvent( button_event );
975 }
976
977 break;
978 }
979 if (ancestor->IsTopLevel())
980 break;
981 ancestor = ancestor->GetParent();
982 }
983 }
984 #endif // wxUSE_ACCEL
985
986 // Only send wxEVT_CHAR event if not processed yet. Thus, ALT-x
987 // will only be sent if it is not in an accelerator table.
988 if (!ret)
989 {
990 long key_code;
991 KeySym keysym = gdk_event->keyval;
992 // Find key code for EVT_CHAR and EVT_CHAR_HOOK events
993 key_code = wxTranslateKeySymToWXKey(keysym, true /* isChar */);
994 if ( !key_code )
995 {
996 if ( wxIsAsciiKeysym(keysym) )
997 {
998 // ASCII key
999 key_code = (unsigned char)keysym;
1000 }
1001 // gdk_event->string is actually deprecated
1002 else if ( gdk_event->length == 1 )
1003 {
1004 key_code = (unsigned char)gdk_event->string[0];
1005 }
1006 }
1007
1008 if ( key_code )
1009 {
1010 wxKeyEvent eventChar(wxEVT_CHAR, event);
1011
1012 wxLogTrace(TRACE_KEYS, wxT("Char event: %ld"), key_code);
1013
1014 eventChar.m_keyCode = key_code;
1015
1016 AdjustCharEventKeyCodes(eventChar);
1017
1018 ret = win->HandleWindowEvent(eventChar);
1019 }
1020 }
1021
1022 return ret;
1023 }
1024 }
1025
1026 extern "C" {
1027 static void
1028 gtk_wxwindow_commit_cb (GtkIMContext * WXUNUSED(context),
1029 const gchar *str,
1030 wxWindow *window)
1031 {
1032 wxKeyEvent event( wxEVT_CHAR );
1033
1034 // take modifiers, cursor position, timestamp etc. from the last
1035 // key_press_event that was fed into Input Method:
1036 if (window->m_imData->lastKeyEvent)
1037 {
1038 wxFillOtherKeyEventFields(event,
1039 window, window->m_imData->lastKeyEvent);
1040 }
1041 else
1042 {
1043 event.SetEventObject( window );
1044 }
1045
1046 const wxString data(wxGTK_CONV_BACK_SYS(str));
1047 if( data.empty() )
1048 return;
1049
1050 for( wxString::const_iterator pstr = data.begin(); pstr != data.end(); ++pstr )
1051 {
1052 #if wxUSE_UNICODE
1053 event.m_uniChar = *pstr;
1054 // Backward compatible for ISO-8859-1
1055 event.m_keyCode = *pstr < 256 ? event.m_uniChar : 0;
1056 wxLogTrace(TRACE_KEYS, wxT("IM sent character '%c'"), event.m_uniChar);
1057 #else
1058 event.m_keyCode = (char)*pstr;
1059 #endif // wxUSE_UNICODE
1060
1061 AdjustCharEventKeyCodes(event);
1062
1063 window->HandleWindowEvent(event);
1064 }
1065 }
1066 }
1067
1068
1069 //-----------------------------------------------------------------------------
1070 // "key_release_event" from any window
1071 //-----------------------------------------------------------------------------
1072
1073 extern "C" {
1074 static gboolean
1075 gtk_window_key_release_callback( GtkWidget * WXUNUSED(widget),
1076 GdkEventKey *gdk_event,
1077 wxWindowGTK *win )
1078 {
1079 if (!win->m_hasVMT)
1080 return FALSE;
1081
1082 if (g_blockEventsOnDrag)
1083 return FALSE;
1084
1085 wxPROCESS_EVENT_ONCE(GdkEventKey, gdk_event);
1086
1087 wxKeyEvent event( wxEVT_KEY_UP );
1088 if ( !wxTranslateGTKKeyEventToWx(event, win, gdk_event) )
1089 {
1090 // unknown key pressed, ignore (the event would be useless anyhow)
1091 return FALSE;
1092 }
1093
1094 return win->GTKProcessEvent(event);
1095 }
1096 }
1097
1098 // ============================================================================
1099 // the mouse events
1100 // ============================================================================
1101
1102 // ----------------------------------------------------------------------------
1103 // mouse event processing helpers
1104 // ----------------------------------------------------------------------------
1105
1106 static void AdjustEventButtonState(wxMouseEvent& event)
1107 {
1108 // GDK reports the old state of the button for a button press event, but
1109 // for compatibility with MSW and common sense we want m_leftDown be TRUE
1110 // for a LEFT_DOWN event, not FALSE, so we will invert
1111 // left/right/middleDown for the corresponding click events
1112
1113 if ((event.GetEventType() == wxEVT_LEFT_DOWN) ||
1114 (event.GetEventType() == wxEVT_LEFT_DCLICK) ||
1115 (event.GetEventType() == wxEVT_LEFT_UP))
1116 {
1117 event.m_leftDown = !event.m_leftDown;
1118 return;
1119 }
1120
1121 if ((event.GetEventType() == wxEVT_MIDDLE_DOWN) ||
1122 (event.GetEventType() == wxEVT_MIDDLE_DCLICK) ||
1123 (event.GetEventType() == wxEVT_MIDDLE_UP))
1124 {
1125 event.m_middleDown = !event.m_middleDown;
1126 return;
1127 }
1128
1129 if ((event.GetEventType() == wxEVT_RIGHT_DOWN) ||
1130 (event.GetEventType() == wxEVT_RIGHT_DCLICK) ||
1131 (event.GetEventType() == wxEVT_RIGHT_UP))
1132 {
1133 event.m_rightDown = !event.m_rightDown;
1134 return;
1135 }
1136
1137 if ((event.GetEventType() == wxEVT_AUX1_DOWN) ||
1138 (event.GetEventType() == wxEVT_AUX1_DCLICK))
1139 {
1140 event.m_aux1Down = true;
1141 return;
1142 }
1143
1144 if ((event.GetEventType() == wxEVT_AUX2_DOWN) ||
1145 (event.GetEventType() == wxEVT_AUX2_DCLICK))
1146 {
1147 event.m_aux2Down = true;
1148 return;
1149 }
1150 }
1151
1152 // find the window to send the mouse event to
1153 static
1154 wxWindowGTK *FindWindowForMouseEvent(wxWindowGTK *win, wxCoord& x, wxCoord& y)
1155 {
1156 wxCoord xx = x;
1157 wxCoord yy = y;
1158
1159 if (win->m_wxwindow)
1160 {
1161 wxPizza* pizza = WX_PIZZA(win->m_wxwindow);
1162 xx += pizza->m_scroll_x;
1163 yy += pizza->m_scroll_y;
1164 }
1165
1166 wxWindowList::compatibility_iterator node = win->GetChildren().GetFirst();
1167 while (node)
1168 {
1169 wxWindow* child = static_cast<wxWindow*>(node->GetData());
1170
1171 node = node->GetNext();
1172 if (!child->IsShown())
1173 continue;
1174
1175 if (child->GTKIsTransparentForMouse())
1176 {
1177 // wxStaticBox is transparent in the box itself
1178 int xx1 = child->m_x;
1179 int yy1 = child->m_y;
1180 int xx2 = child->m_x + child->m_width;
1181 int yy2 = child->m_y + child->m_height;
1182
1183 // left
1184 if (((xx >= xx1) && (xx <= xx1+10) && (yy >= yy1) && (yy <= yy2)) ||
1185 // right
1186 ((xx >= xx2-10) && (xx <= xx2) && (yy >= yy1) && (yy <= yy2)) ||
1187 // top
1188 ((xx >= xx1) && (xx <= xx2) && (yy >= yy1) && (yy <= yy1+10)) ||
1189 // bottom
1190 ((xx >= xx1) && (xx <= xx2) && (yy >= yy2-1) && (yy <= yy2)))
1191 {
1192 win = child;
1193 x -= child->m_x;
1194 y -= child->m_y;
1195 break;
1196 }
1197
1198 }
1199 else
1200 {
1201 if ((child->m_wxwindow == NULL) &&
1202 win->IsClientAreaChild(child) &&
1203 (child->m_x <= xx) &&
1204 (child->m_y <= yy) &&
1205 (child->m_x+child->m_width >= xx) &&
1206 (child->m_y+child->m_height >= yy))
1207 {
1208 win = child;
1209 x -= child->m_x;
1210 y -= child->m_y;
1211 break;
1212 }
1213 }
1214 }
1215
1216 return win;
1217 }
1218
1219 // ----------------------------------------------------------------------------
1220 // common event handlers helpers
1221 // ----------------------------------------------------------------------------
1222
1223 bool wxWindowGTK::GTKProcessEvent(wxEvent& event) const
1224 {
1225 // nothing special at this level
1226 return HandleWindowEvent(event);
1227 }
1228
1229 bool wxWindowGTK::GTKShouldIgnoreEvent() const
1230 {
1231 return !m_hasVMT || g_blockEventsOnDrag;
1232 }
1233
1234 int wxWindowGTK::GTKCallbackCommonPrologue(GdkEventAny *event) const
1235 {
1236 if (!m_hasVMT)
1237 return FALSE;
1238 if (g_blockEventsOnDrag)
1239 return TRUE;
1240 if (g_blockEventsOnScroll)
1241 return TRUE;
1242
1243 if (!GTKIsOwnWindow(event->window))
1244 return FALSE;
1245
1246 return -1;
1247 }
1248
1249 // overloads for all GDK event types we use here: we need to have this as
1250 // GdkEventXXX can't be implicitly cast to GdkEventAny even if it, in fact,
1251 // derives from it in the sense that the structs have the same layout
1252 #define wxDEFINE_COMMON_PROLOGUE_OVERLOAD(T) \
1253 static int wxGtkCallbackCommonPrologue(T *event, wxWindowGTK *win) \
1254 { \
1255 return win->GTKCallbackCommonPrologue((GdkEventAny *)event); \
1256 }
1257
1258 wxDEFINE_COMMON_PROLOGUE_OVERLOAD(GdkEventButton)
1259 wxDEFINE_COMMON_PROLOGUE_OVERLOAD(GdkEventMotion)
1260 wxDEFINE_COMMON_PROLOGUE_OVERLOAD(GdkEventCrossing)
1261
1262 #undef wxDEFINE_COMMON_PROLOGUE_OVERLOAD
1263
1264 #define wxCOMMON_CALLBACK_PROLOGUE(event, win) \
1265 const int rc = wxGtkCallbackCommonPrologue(event, win); \
1266 if ( rc != -1 ) \
1267 return rc
1268
1269 // all event handlers must have C linkage as they're called from GTK+ C code
1270 extern "C"
1271 {
1272
1273 //-----------------------------------------------------------------------------
1274 // "button_press_event"
1275 //-----------------------------------------------------------------------------
1276
1277 static gboolean
1278 gtk_window_button_press_callback( GtkWidget *widget,
1279 GdkEventButton *gdk_event,
1280 wxWindowGTK *win )
1281 {
1282 wxPROCESS_EVENT_ONCE(GdkEventButton, gdk_event);
1283
1284 wxCOMMON_CALLBACK_PROLOGUE(gdk_event, win);
1285
1286 g_lastButtonNumber = gdk_event->button;
1287
1288 // GDK sends surplus button down events
1289 // before a double click event. We
1290 // need to filter these out.
1291 if ((gdk_event->type == GDK_BUTTON_PRESS) && (win->m_wxwindow))
1292 {
1293 GdkEvent *peek_event = gdk_event_peek();
1294 if (peek_event)
1295 {
1296 if ((peek_event->type == GDK_2BUTTON_PRESS) ||
1297 (peek_event->type == GDK_3BUTTON_PRESS))
1298 {
1299 gdk_event_free( peek_event );
1300 return TRUE;
1301 }
1302 else
1303 {
1304 gdk_event_free( peek_event );
1305 }
1306 }
1307 }
1308
1309 wxEventType event_type = wxEVT_NULL;
1310
1311 if ( gdk_event->type == GDK_2BUTTON_PRESS &&
1312 gdk_event->button >= 1 && gdk_event->button <= 3 )
1313 {
1314 // Reset GDK internal timestamp variables in order to disable GDK
1315 // triple click events. GDK will then next time believe no button has
1316 // been clicked just before, and send a normal button click event.
1317 GdkDisplay* display = gtk_widget_get_display (widget);
1318 display->button_click_time[1] = 0;
1319 display->button_click_time[0] = 0;
1320 }
1321
1322 if (gdk_event->button == 1)
1323 {
1324 // note that GDK generates triple click events which are not supported
1325 // by wxWidgets but still have to be passed to the app as otherwise
1326 // clicks would simply go missing
1327 switch (gdk_event->type)
1328 {
1329 // we shouldn't get triple clicks at all for GTK2 because we
1330 // suppress them artificially using the code above but we still
1331 // should map them to something for GTK1 and not just ignore them
1332 // as this would lose clicks
1333 case GDK_3BUTTON_PRESS: // we could also map this to DCLICK...
1334 case GDK_BUTTON_PRESS:
1335 event_type = wxEVT_LEFT_DOWN;
1336 break;
1337
1338 case GDK_2BUTTON_PRESS:
1339 event_type = wxEVT_LEFT_DCLICK;
1340 break;
1341
1342 default:
1343 // just to silence gcc warnings
1344 ;
1345 }
1346 }
1347 else if (gdk_event->button == 2)
1348 {
1349 switch (gdk_event->type)
1350 {
1351 case GDK_3BUTTON_PRESS:
1352 case GDK_BUTTON_PRESS:
1353 event_type = wxEVT_MIDDLE_DOWN;
1354 break;
1355
1356 case GDK_2BUTTON_PRESS:
1357 event_type = wxEVT_MIDDLE_DCLICK;
1358 break;
1359
1360 default:
1361 ;
1362 }
1363 }
1364 else if (gdk_event->button == 3)
1365 {
1366 switch (gdk_event->type)
1367 {
1368 case GDK_3BUTTON_PRESS:
1369 case GDK_BUTTON_PRESS:
1370 event_type = wxEVT_RIGHT_DOWN;
1371 break;
1372
1373 case GDK_2BUTTON_PRESS:
1374 event_type = wxEVT_RIGHT_DCLICK;
1375 break;
1376
1377 default:
1378 ;
1379 }
1380 }
1381
1382 else if (gdk_event->button == 8)
1383 {
1384 switch (gdk_event->type)
1385 {
1386 case GDK_3BUTTON_PRESS:
1387 case GDK_BUTTON_PRESS:
1388 event_type = wxEVT_AUX1_DOWN;
1389 break;
1390
1391 case GDK_2BUTTON_PRESS:
1392 event_type = wxEVT_AUX1_DCLICK;
1393 break;
1394
1395 default:
1396 ;
1397 }
1398 }
1399
1400 else if (gdk_event->button == 9)
1401 {
1402 switch (gdk_event->type)
1403 {
1404 case GDK_3BUTTON_PRESS:
1405 case GDK_BUTTON_PRESS:
1406 event_type = wxEVT_AUX2_DOWN;
1407 break;
1408
1409 case GDK_2BUTTON_PRESS:
1410 event_type = wxEVT_AUX2_DCLICK;
1411 break;
1412
1413 default:
1414 ;
1415 }
1416 }
1417
1418 if ( event_type == wxEVT_NULL )
1419 {
1420 // unknown mouse button or click type
1421 return FALSE;
1422 }
1423
1424 g_lastMouseEvent = (GdkEvent*) gdk_event;
1425
1426 wxMouseEvent event( event_type );
1427 InitMouseEvent( win, event, gdk_event );
1428
1429 AdjustEventButtonState(event);
1430
1431 // find the correct window to send the event to: it may be a different one
1432 // from the one which got it at GTK+ level because some controls don't have
1433 // their own X window and thus cannot get any events.
1434 if ( !g_captureWindow )
1435 win = FindWindowForMouseEvent(win, event.m_x, event.m_y);
1436
1437 // reset the event object and id in case win changed.
1438 event.SetEventObject( win );
1439 event.SetId( win->GetId() );
1440
1441 bool ret = win->GTKProcessEvent( event );
1442 g_lastMouseEvent = NULL;
1443 if ( ret )
1444 return TRUE;
1445
1446 if ((event_type == wxEVT_LEFT_DOWN) && !win->IsOfStandardClass() &&
1447 (gs_currentFocus != win) /* && win->IsFocusable() */)
1448 {
1449 win->SetFocus();
1450 }
1451
1452 if (event_type == wxEVT_RIGHT_DOWN)
1453 {
1454 // generate a "context menu" event: this is similar to right mouse
1455 // click under many GUIs except that it is generated differently
1456 // (right up under MSW, ctrl-click under Mac, right down here) and
1457 //
1458 // (a) it's a command event and so is propagated to the parent
1459 // (b) under some ports it can be generated from kbd too
1460 // (c) it uses screen coords (because of (a))
1461 wxContextMenuEvent evtCtx(
1462 wxEVT_CONTEXT_MENU,
1463 win->GetId(),
1464 win->ClientToScreen(event.GetPosition()));
1465 evtCtx.SetEventObject(win);
1466 return win->GTKProcessEvent(evtCtx);
1467 }
1468
1469 return FALSE;
1470 }
1471
1472 //-----------------------------------------------------------------------------
1473 // "button_release_event"
1474 //-----------------------------------------------------------------------------
1475
1476 static gboolean
1477 gtk_window_button_release_callback( GtkWidget *WXUNUSED(widget),
1478 GdkEventButton *gdk_event,
1479 wxWindowGTK *win )
1480 {
1481 wxPROCESS_EVENT_ONCE(GdkEventButton, gdk_event);
1482
1483 wxCOMMON_CALLBACK_PROLOGUE(gdk_event, win);
1484
1485 g_lastButtonNumber = 0;
1486
1487 wxEventType event_type = wxEVT_NULL;
1488
1489 switch (gdk_event->button)
1490 {
1491 case 1:
1492 event_type = wxEVT_LEFT_UP;
1493 break;
1494
1495 case 2:
1496 event_type = wxEVT_MIDDLE_UP;
1497 break;
1498
1499 case 3:
1500 event_type = wxEVT_RIGHT_UP;
1501 break;
1502
1503 case 8:
1504 event_type = wxEVT_AUX1_UP;
1505 break;
1506
1507 case 9:
1508 event_type = wxEVT_AUX2_UP;
1509 break;
1510
1511 default:
1512 // unknown button, don't process
1513 return FALSE;
1514 }
1515
1516 g_lastMouseEvent = (GdkEvent*) gdk_event;
1517
1518 wxMouseEvent event( event_type );
1519 InitMouseEvent( win, event, gdk_event );
1520
1521 AdjustEventButtonState(event);
1522
1523 if ( !g_captureWindow )
1524 win = FindWindowForMouseEvent(win, event.m_x, event.m_y);
1525
1526 // reset the event object and id in case win changed.
1527 event.SetEventObject( win );
1528 event.SetId( win->GetId() );
1529
1530 bool ret = win->GTKProcessEvent(event);
1531
1532 g_lastMouseEvent = NULL;
1533
1534 return ret;
1535 }
1536
1537 //-----------------------------------------------------------------------------
1538 // "motion_notify_event"
1539 //-----------------------------------------------------------------------------
1540
1541 static gboolean
1542 gtk_window_motion_notify_callback( GtkWidget * WXUNUSED(widget),
1543 GdkEventMotion *gdk_event,
1544 wxWindowGTK *win )
1545 {
1546 wxPROCESS_EVENT_ONCE(GdkEventMotion, gdk_event);
1547
1548 wxCOMMON_CALLBACK_PROLOGUE(gdk_event, win);
1549
1550 if (gdk_event->is_hint)
1551 {
1552 int x = 0;
1553 int y = 0;
1554 GdkModifierType state;
1555 gdk_window_get_pointer(gdk_event->window, &x, &y, &state);
1556 gdk_event->x = x;
1557 gdk_event->y = y;
1558 }
1559
1560 g_lastMouseEvent = (GdkEvent*) gdk_event;
1561
1562 wxMouseEvent event( wxEVT_MOTION );
1563 InitMouseEvent(win, event, gdk_event);
1564
1565 if ( g_captureWindow )
1566 {
1567 // synthesise a mouse enter or leave event if needed
1568 GdkWindow *winUnderMouse = gdk_window_at_pointer(NULL, NULL);
1569 // This seems to be necessary and actually been added to
1570 // GDK itself in version 2.0.X
1571 gdk_flush();
1572
1573 bool hasMouse = winUnderMouse == gdk_event->window;
1574 if ( hasMouse != g_captureWindowHasMouse )
1575 {
1576 // the mouse changed window
1577 g_captureWindowHasMouse = hasMouse;
1578
1579 wxMouseEvent eventM(g_captureWindowHasMouse ? wxEVT_ENTER_WINDOW
1580 : wxEVT_LEAVE_WINDOW);
1581 InitMouseEvent(win, eventM, gdk_event);
1582 eventM.SetEventObject(win);
1583 win->GTKProcessEvent(eventM);
1584 }
1585 }
1586 else // no capture
1587 {
1588 win = FindWindowForMouseEvent(win, event.m_x, event.m_y);
1589
1590 // reset the event object and id in case win changed.
1591 event.SetEventObject( win );
1592 event.SetId( win->GetId() );
1593 }
1594
1595 if ( !g_captureWindow )
1596 {
1597 wxSetCursorEvent cevent( event.m_x, event.m_y );
1598 if (win->GTKProcessEvent( cevent ))
1599 {
1600 win->SetCursor( cevent.GetCursor() );
1601 }
1602 }
1603
1604 bool ret = win->GTKProcessEvent(event);
1605
1606 g_lastMouseEvent = NULL;
1607
1608 return ret;
1609 }
1610
1611 //-----------------------------------------------------------------------------
1612 // "scroll_event" (mouse wheel event)
1613 //-----------------------------------------------------------------------------
1614
1615 static gboolean
1616 window_scroll_event_hscrollbar(GtkWidget*, GdkEventScroll* gdk_event, wxWindow* win)
1617 {
1618 if (gdk_event->direction != GDK_SCROLL_LEFT &&
1619 gdk_event->direction != GDK_SCROLL_RIGHT)
1620 {
1621 return false;
1622 }
1623
1624 GtkRange *range = win->m_scrollBar[wxWindow::ScrollDir_Horz];
1625
1626 if (range && gtk_widget_get_visible(GTK_WIDGET(range)))
1627 {
1628 GtkAdjustment* adj = gtk_range_get_adjustment(range);
1629 double delta = gtk_adjustment_get_step_increment(adj) * 3;
1630 if (gdk_event->direction == GDK_SCROLL_LEFT)
1631 delta = -delta;
1632
1633 gtk_range_set_value(range, gtk_adjustment_get_value(adj) + delta);
1634
1635 return TRUE;
1636 }
1637
1638 return FALSE;
1639 }
1640
1641 static gboolean
1642 window_scroll_event(GtkWidget*, GdkEventScroll* gdk_event, wxWindow* win)
1643 {
1644 wxMouseEvent event(wxEVT_MOUSEWHEEL);
1645 InitMouseEvent(win, event, gdk_event);
1646
1647 // FIXME: Get these values from GTK or GDK
1648 event.m_linesPerAction = 3;
1649 event.m_wheelDelta = 120;
1650
1651 // Determine the scroll direction.
1652 switch (gdk_event->direction)
1653 {
1654 case GDK_SCROLL_UP:
1655 case GDK_SCROLL_RIGHT:
1656 event.m_wheelRotation = 120;
1657 break;
1658
1659 case GDK_SCROLL_DOWN:
1660 case GDK_SCROLL_LEFT:
1661 event.m_wheelRotation = -120;
1662 break;
1663
1664 default:
1665 return false; // Unknown/unhandled direction
1666 }
1667
1668 // And the scroll axis.
1669 switch (gdk_event->direction)
1670 {
1671 case GDK_SCROLL_UP:
1672 case GDK_SCROLL_DOWN:
1673 event.m_wheelAxis = wxMOUSE_WHEEL_VERTICAL;
1674 break;
1675
1676 case GDK_SCROLL_LEFT:
1677 case GDK_SCROLL_RIGHT:
1678 event.m_wheelAxis = wxMOUSE_WHEEL_HORIZONTAL;
1679 break;
1680 }
1681
1682 if (win->GTKProcessEvent(event))
1683 return TRUE;
1684
1685 GtkRange *range = win->m_scrollBar[wxWindow::ScrollDir_Vert];
1686
1687 if (range && gtk_widget_get_visible(GTK_WIDGET(range)))
1688 {
1689 GtkAdjustment* adj = gtk_range_get_adjustment(range);
1690 double delta = gtk_adjustment_get_step_increment(adj) * 3;
1691 if (gdk_event->direction == GDK_SCROLL_UP)
1692 delta = -delta;
1693
1694 gtk_range_set_value(range, gtk_adjustment_get_value(adj) + delta);
1695
1696 return TRUE;
1697 }
1698
1699 return FALSE;
1700 }
1701
1702 //-----------------------------------------------------------------------------
1703 // "popup-menu"
1704 //-----------------------------------------------------------------------------
1705
1706 static gboolean wxgtk_window_popup_menu_callback(GtkWidget*, wxWindowGTK* win)
1707 {
1708 wxContextMenuEvent event(wxEVT_CONTEXT_MENU, win->GetId(), wxPoint(-1, -1));
1709 event.SetEventObject(win);
1710 return win->GTKProcessEvent(event);
1711 }
1712
1713 //-----------------------------------------------------------------------------
1714 // "focus_in_event"
1715 //-----------------------------------------------------------------------------
1716
1717 static gboolean
1718 gtk_window_focus_in_callback( GtkWidget * WXUNUSED(widget),
1719 GdkEventFocus *WXUNUSED(event),
1720 wxWindowGTK *win )
1721 {
1722 return win->GTKHandleFocusIn();
1723 }
1724
1725 //-----------------------------------------------------------------------------
1726 // "focus_out_event"
1727 //-----------------------------------------------------------------------------
1728
1729 static gboolean
1730 gtk_window_focus_out_callback( GtkWidget * WXUNUSED(widget),
1731 GdkEventFocus * WXUNUSED(gdk_event),
1732 wxWindowGTK *win )
1733 {
1734 return win->GTKHandleFocusOut();
1735 }
1736
1737 //-----------------------------------------------------------------------------
1738 // "focus"
1739 //-----------------------------------------------------------------------------
1740
1741 static gboolean
1742 wx_window_focus_callback(GtkWidget *widget,
1743 GtkDirectionType WXUNUSED(direction),
1744 wxWindowGTK *win)
1745 {
1746 // the default handler for focus signal in GtkScrolledWindow sets
1747 // focus to the window itself even if it doesn't accept focus, i.e. has no
1748 // GTK_CAN_FOCUS in its style -- work around this by forcibly preventing
1749 // the signal from reaching gtk_scrolled_window_focus() if we don't have
1750 // any children which might accept focus (we know we don't accept the focus
1751 // ourselves as this signal is only connected in this case)
1752 if ( win->GetChildren().empty() )
1753 g_signal_stop_emission_by_name(widget, "focus");
1754
1755 // we didn't change the focus
1756 return FALSE;
1757 }
1758
1759 //-----------------------------------------------------------------------------
1760 // "enter_notify_event"
1761 //-----------------------------------------------------------------------------
1762
1763 static gboolean
1764 gtk_window_enter_callback( GtkWidget *widget,
1765 GdkEventCrossing *gdk_event,
1766 wxWindowGTK *win )
1767 {
1768 wxCOMMON_CALLBACK_PROLOGUE(gdk_event, win);
1769
1770 // Event was emitted after a grab
1771 if (gdk_event->mode != GDK_CROSSING_NORMAL) return FALSE;
1772
1773 int x = 0;
1774 int y = 0;
1775 GdkModifierType state = (GdkModifierType)0;
1776
1777 gdk_window_get_pointer(gtk_widget_get_window(widget), &x, &y, &state);
1778
1779 wxMouseEvent event( wxEVT_ENTER_WINDOW );
1780 InitMouseEvent(win, event, gdk_event);
1781 wxPoint pt = win->GetClientAreaOrigin();
1782 event.m_x = x + pt.x;
1783 event.m_y = y + pt.y;
1784
1785 if ( !g_captureWindow )
1786 {
1787 wxSetCursorEvent cevent( event.m_x, event.m_y );
1788 if (win->GTKProcessEvent( cevent ))
1789 {
1790 win->SetCursor( cevent.GetCursor() );
1791 }
1792 }
1793
1794 return win->GTKProcessEvent(event);
1795 }
1796
1797 //-----------------------------------------------------------------------------
1798 // "leave_notify_event"
1799 //-----------------------------------------------------------------------------
1800
1801 static gboolean
1802 gtk_window_leave_callback( GtkWidget *widget,
1803 GdkEventCrossing *gdk_event,
1804 wxWindowGTK *win )
1805 {
1806 wxCOMMON_CALLBACK_PROLOGUE(gdk_event, win);
1807
1808 // Event was emitted after an ungrab
1809 if (gdk_event->mode != GDK_CROSSING_NORMAL) return FALSE;
1810
1811 wxMouseEvent event( wxEVT_LEAVE_WINDOW );
1812
1813 int x = 0;
1814 int y = 0;
1815 GdkModifierType state = (GdkModifierType)0;
1816
1817 gdk_window_get_pointer(gtk_widget_get_window(widget), &x, &y, &state);
1818
1819 InitMouseEvent(win, event, gdk_event);
1820
1821 return win->GTKProcessEvent(event);
1822 }
1823
1824 //-----------------------------------------------------------------------------
1825 // "value_changed" from scrollbar
1826 //-----------------------------------------------------------------------------
1827
1828 static void
1829 gtk_scrollbar_value_changed(GtkRange* range, wxWindow* win)
1830 {
1831 wxEventType eventType = win->GTKGetScrollEventType(range);
1832 if (eventType != wxEVT_NULL)
1833 {
1834 // Convert scroll event type to scrollwin event type
1835 eventType += wxEVT_SCROLLWIN_TOP - wxEVT_SCROLL_TOP;
1836
1837 // find the scrollbar which generated the event
1838 wxWindowGTK::ScrollDir dir = win->ScrollDirFromRange(range);
1839
1840 // generate the corresponding wx event
1841 const int orient = wxWindow::OrientFromScrollDir(dir);
1842 wxScrollWinEvent event(eventType, win->GetScrollPos(orient), orient);
1843 event.SetEventObject(win);
1844
1845 win->GTKProcessEvent(event);
1846 }
1847 }
1848
1849 //-----------------------------------------------------------------------------
1850 // "button_press_event" from scrollbar
1851 //-----------------------------------------------------------------------------
1852
1853 static gboolean
1854 gtk_scrollbar_button_press_event(GtkRange*, GdkEventButton*, wxWindow* win)
1855 {
1856 g_blockEventsOnScroll = true;
1857 win->m_mouseButtonDown = true;
1858
1859 return false;
1860 }
1861
1862 //-----------------------------------------------------------------------------
1863 // "event_after" from scrollbar
1864 //-----------------------------------------------------------------------------
1865
1866 static void
1867 gtk_scrollbar_event_after(GtkRange* range, GdkEvent* event, wxWindow* win)
1868 {
1869 if (event->type == GDK_BUTTON_RELEASE)
1870 {
1871 g_signal_handlers_block_by_func(range, (void*)gtk_scrollbar_event_after, win);
1872
1873 const int orient = wxWindow::OrientFromScrollDir(
1874 win->ScrollDirFromRange(range));
1875 wxScrollWinEvent evt(wxEVT_SCROLLWIN_THUMBRELEASE,
1876 win->GetScrollPos(orient), orient);
1877 evt.SetEventObject(win);
1878 win->GTKProcessEvent(evt);
1879 }
1880 }
1881
1882 //-----------------------------------------------------------------------------
1883 // "button_release_event" from scrollbar
1884 //-----------------------------------------------------------------------------
1885
1886 static gboolean
1887 gtk_scrollbar_button_release_event(GtkRange* range, GdkEventButton*, wxWindow* win)
1888 {
1889 g_blockEventsOnScroll = false;
1890 win->m_mouseButtonDown = false;
1891 // If thumb tracking
1892 if (win->m_isScrolling)
1893 {
1894 win->m_isScrolling = false;
1895 // Hook up handler to send thumb release event after this emission is finished.
1896 // To allow setting scroll position from event handler, sending event must
1897 // be deferred until after the GtkRange handler for this signal has run
1898 g_signal_handlers_unblock_by_func(range, (void*)gtk_scrollbar_event_after, win);
1899 }
1900
1901 return false;
1902 }
1903
1904 //-----------------------------------------------------------------------------
1905 // "realize" from m_widget
1906 //-----------------------------------------------------------------------------
1907
1908 static void
1909 gtk_window_realized_callback(GtkWidget* WXUNUSED(widget), wxWindowGTK* win)
1910 {
1911 win->GTKHandleRealized();
1912 }
1913
1914 //-----------------------------------------------------------------------------
1915 // "unrealize" from m_wxwindow
1916 //-----------------------------------------------------------------------------
1917
1918 static void unrealize(GtkWidget*, wxWindowGTK* win)
1919 {
1920 if (win->m_imData)
1921 gtk_im_context_set_client_window(win->m_imData->context, NULL);
1922 }
1923
1924 //-----------------------------------------------------------------------------
1925 // "size_allocate" from m_wxwindow or m_widget
1926 //-----------------------------------------------------------------------------
1927
1928 static void
1929 size_allocate(GtkWidget*, GtkAllocation* alloc, wxWindow* win)
1930 {
1931 int w = alloc->width;
1932 int h = alloc->height;
1933 if (win->m_wxwindow)
1934 {
1935 int border_x, border_y;
1936 WX_PIZZA(win->m_wxwindow)->get_border_widths(border_x, border_y);
1937 w -= 2 * border_x;
1938 h -= 2 * border_y;
1939 if (w < 0) w = 0;
1940 if (h < 0) h = 0;
1941 }
1942 if (win->m_oldClientWidth != w || win->m_oldClientHeight != h)
1943 {
1944 win->m_oldClientWidth = w;
1945 win->m_oldClientHeight = h;
1946 // this callback can be connected to m_wxwindow,
1947 // so always get size from m_widget->allocation
1948 GtkAllocation a;
1949 gtk_widget_get_allocation(win->m_widget, &a);
1950 win->m_width = a.width;
1951 win->m_height = a.height;
1952 if (!win->m_nativeSizeEvent)
1953 {
1954 wxSizeEvent event(win->GetSize(), win->GetId());
1955 event.SetEventObject(win);
1956 win->GTKProcessEvent(event);
1957 }
1958 }
1959 }
1960
1961 //-----------------------------------------------------------------------------
1962 // "grab_broken"
1963 //-----------------------------------------------------------------------------
1964
1965 #if GTK_CHECK_VERSION(2, 8, 0)
1966 static gboolean
1967 gtk_window_grab_broken( GtkWidget*,
1968 GdkEventGrabBroken *event,
1969 wxWindow *win )
1970 {
1971 // Mouse capture has been lost involuntarily, notify the application
1972 if(!event->keyboard && wxWindow::GetCapture() == win)
1973 {
1974 wxMouseCaptureLostEvent evt( win->GetId() );
1975 evt.SetEventObject( win );
1976 win->HandleWindowEvent( evt );
1977 }
1978 return false;
1979 }
1980 #endif
1981
1982 //-----------------------------------------------------------------------------
1983 // "style_set"
1984 //-----------------------------------------------------------------------------
1985
1986 static
1987 void gtk_window_style_set_callback( GtkWidget *WXUNUSED(widget),
1988 GtkStyle *previous_style,
1989 wxWindow* win )
1990 {
1991 if (win && previous_style)
1992 {
1993 if (win->IsTopLevel())
1994 {
1995 wxSysColourChangedEvent event;
1996 event.SetEventObject(win);
1997 win->GTKProcessEvent(event);
1998 }
1999 else
2000 {
2001 // Border width could change, which will change client size.
2002 // Make sure size event occurs for this
2003 win->m_oldClientWidth = 0;
2004 }
2005 }
2006 }
2007
2008 } // extern "C"
2009
2010 void wxWindowGTK::GTKHandleRealized()
2011 {
2012 if (m_imData)
2013 {
2014 gtk_im_context_set_client_window
2015 (
2016 m_imData->context,
2017 m_wxwindow ? GTKGetDrawingWindow()
2018 : gtk_widget_get_window(m_widget)
2019 );
2020 }
2021
2022 // Use composited window if background is transparent, if supported.
2023 if (m_backgroundStyle == wxBG_STYLE_TRANSPARENT)
2024 {
2025 #if wxGTK_HAS_COMPOSITING_SUPPORT
2026 if (IsTransparentBackgroundSupported())
2027 {
2028 GdkWindow* const window = GTKGetDrawingWindow();
2029 if (window)
2030 gdk_window_set_composited(window, true);
2031 }
2032 else
2033 #endif // wxGTK_HAS_COMPOSITING_SUPPORT
2034 {
2035 // We revert to erase mode if transparency is not supported
2036 m_backgroundStyle = wxBG_STYLE_ERASE;
2037 }
2038 }
2039
2040
2041 // We cannot set colours and fonts before the widget
2042 // been realized, so we do this directly after realization
2043 // or otherwise in idle time
2044
2045 if (m_needsStyleChange)
2046 {
2047 SetBackgroundStyle(GetBackgroundStyle());
2048 m_needsStyleChange = false;
2049 }
2050
2051 wxWindowCreateEvent event(static_cast<wxWindow*>(this));
2052 event.SetEventObject( this );
2053 GTKProcessEvent( event );
2054
2055 GTKUpdateCursor(true, false);
2056 }
2057
2058 // ----------------------------------------------------------------------------
2059 // this wxWindowBase function is implemented here (in platform-specific file)
2060 // because it is static and so couldn't be made virtual
2061 // ----------------------------------------------------------------------------
2062
2063 wxWindow *wxWindowBase::DoFindFocus()
2064 {
2065 wxWindowGTK *focus = gs_pendingFocus ? gs_pendingFocus : gs_currentFocus;
2066 // the cast is necessary when we compile in wxUniversal mode
2067 return static_cast<wxWindow*>(focus);
2068 }
2069
2070 void wxWindowGTK::AddChildGTK(wxWindowGTK* child)
2071 {
2072 wxASSERT_MSG(m_wxwindow, "Cannot add a child to a window without a client area");
2073
2074 // the window might have been scrolled already, we
2075 // have to adapt the position
2076 wxPizza* pizza = WX_PIZZA(m_wxwindow);
2077 child->m_x += pizza->m_scroll_x;
2078 child->m_y += pizza->m_scroll_y;
2079
2080 gtk_widget_set_size_request(
2081 child->m_widget, child->m_width, child->m_height);
2082 pizza->put(child->m_widget, child->m_x, child->m_y);
2083 }
2084
2085 //-----------------------------------------------------------------------------
2086 // global functions
2087 //-----------------------------------------------------------------------------
2088
2089 wxWindow *wxGetActiveWindow()
2090 {
2091 return wxWindow::FindFocus();
2092 }
2093
2094
2095 wxMouseState wxGetMouseState()
2096 {
2097 wxMouseState ms;
2098
2099 gint x;
2100 gint y;
2101 GdkModifierType mask;
2102
2103 gdk_window_get_pointer(NULL, &x, &y, &mask);
2104
2105 ms.SetX(x);
2106 ms.SetY(y);
2107 ms.SetLeftDown((mask & GDK_BUTTON1_MASK) != 0);
2108 ms.SetMiddleDown((mask & GDK_BUTTON2_MASK) != 0);
2109 ms.SetRightDown((mask & GDK_BUTTON3_MASK) != 0);
2110 // see the comment in InitMouseEvent()
2111 ms.SetAux1Down((mask & GDK_BUTTON4_MASK) != 0);
2112 ms.SetAux2Down((mask & GDK_BUTTON5_MASK) != 0);
2113
2114 ms.SetControlDown((mask & GDK_CONTROL_MASK) != 0);
2115 ms.SetShiftDown((mask & GDK_SHIFT_MASK) != 0);
2116 ms.SetAltDown((mask & GDK_MOD1_MASK) != 0);
2117 ms.SetMetaDown((mask & GDK_META_MASK) != 0);
2118
2119 return ms;
2120 }
2121
2122 //-----------------------------------------------------------------------------
2123 // wxWindowGTK
2124 //-----------------------------------------------------------------------------
2125
2126 // in wxUniv/MSW this class is abstract because it doesn't have DoPopupMenu()
2127 // method
2128 #ifdef __WXUNIVERSAL__
2129 IMPLEMENT_ABSTRACT_CLASS(wxWindowGTK, wxWindowBase)
2130 #endif // __WXUNIVERSAL__
2131
2132 void wxWindowGTK::Init()
2133 {
2134 // GTK specific
2135 m_widget = NULL;
2136 m_wxwindow = NULL;
2137 m_focusWidget = NULL;
2138
2139 // position/size
2140 m_x = 0;
2141 m_y = 0;
2142 m_width = 0;
2143 m_height = 0;
2144
2145 m_hasVMT = false;
2146
2147 m_showOnIdle = false;
2148
2149 m_noExpose = false;
2150 m_nativeSizeEvent = false;
2151
2152 m_isScrolling = false;
2153 m_mouseButtonDown = false;
2154
2155 // initialize scrolling stuff
2156 for ( int dir = 0; dir < ScrollDir_Max; dir++ )
2157 {
2158 m_scrollBar[dir] = NULL;
2159 m_scrollPos[dir] = 0;
2160 }
2161
2162 m_oldClientWidth =
2163 m_oldClientHeight = 0;
2164
2165 m_clipPaintRegion = false;
2166
2167 m_needsStyleChange = false;
2168
2169 m_cursor = *wxSTANDARD_CURSOR;
2170
2171 m_imData = NULL;
2172 m_dirtyTabOrder = false;
2173 }
2174
2175 wxWindowGTK::wxWindowGTK()
2176 {
2177 Init();
2178 }
2179
2180 wxWindowGTK::wxWindowGTK( wxWindow *parent,
2181 wxWindowID id,
2182 const wxPoint &pos,
2183 const wxSize &size,
2184 long style,
2185 const wxString &name )
2186 {
2187 Init();
2188
2189 Create( parent, id, pos, size, style, name );
2190 }
2191
2192 bool wxWindowGTK::Create( wxWindow *parent,
2193 wxWindowID id,
2194 const wxPoint &pos,
2195 const wxSize &size,
2196 long style,
2197 const wxString &name )
2198 {
2199 // Get default border
2200 wxBorder border = GetBorder(style);
2201
2202 style &= ~wxBORDER_MASK;
2203 style |= border;
2204
2205 if (!PreCreation( parent, pos, size ) ||
2206 !CreateBase( parent, id, pos, size, style, wxDefaultValidator, name ))
2207 {
2208 wxFAIL_MSG( wxT("wxWindowGTK creation failed") );
2209 return false;
2210 }
2211
2212 // We should accept the native look
2213 #if 0
2214 GtkScrolledWindowClass *scroll_class = GTK_SCROLLED_WINDOW_CLASS( GTK_OBJECT_GET_CLASS(m_widget) );
2215 scroll_class->scrollbar_spacing = 0;
2216 #endif
2217
2218
2219 m_wxwindow = wxPizza::New(m_windowStyle);
2220 #ifndef __WXUNIVERSAL__
2221 if (HasFlag(wxPizza::BORDER_STYLES))
2222 {
2223 g_signal_connect(m_wxwindow, "parent_set",
2224 G_CALLBACK(parent_set), this);
2225 }
2226 #endif
2227 if (!HasFlag(wxHSCROLL) && !HasFlag(wxVSCROLL))
2228 m_widget = m_wxwindow;
2229 else
2230 {
2231 m_widget = gtk_scrolled_window_new( NULL, NULL );
2232
2233 GtkScrolledWindow *scrolledWindow = GTK_SCROLLED_WINDOW(m_widget);
2234
2235 // There is a conflict with default bindings at GTK+
2236 // level between scrolled windows and notebooks both of which want to use
2237 // Ctrl-PageUp/Down: scrolled windows for scrolling in the horizontal
2238 // direction and notebooks for changing pages -- we decide that if we don't
2239 // have wxHSCROLL style we can safely sacrifice horizontal scrolling if it
2240 // means we can get working keyboard navigation in notebooks
2241 if ( !HasFlag(wxHSCROLL) )
2242 {
2243 GtkBindingSet *
2244 bindings = gtk_binding_set_by_class(G_OBJECT_GET_CLASS(m_widget));
2245 if ( bindings )
2246 {
2247 gtk_binding_entry_remove(bindings, GDK_Page_Up, GDK_CONTROL_MASK);
2248 gtk_binding_entry_remove(bindings, GDK_Page_Down, GDK_CONTROL_MASK);
2249 }
2250 }
2251
2252 if (HasFlag(wxALWAYS_SHOW_SB))
2253 {
2254 gtk_scrolled_window_set_policy( scrolledWindow, GTK_POLICY_ALWAYS, GTK_POLICY_ALWAYS );
2255 }
2256 else
2257 {
2258 gtk_scrolled_window_set_policy( scrolledWindow, GTK_POLICY_AUTOMATIC, GTK_POLICY_AUTOMATIC );
2259 }
2260
2261 m_scrollBar[ScrollDir_Horz] = GTK_RANGE(gtk_scrolled_window_get_hscrollbar(scrolledWindow));
2262 m_scrollBar[ScrollDir_Vert] = GTK_RANGE(gtk_scrolled_window_get_vscrollbar(scrolledWindow));
2263 if (GetLayoutDirection() == wxLayout_RightToLeft)
2264 gtk_range_set_inverted( m_scrollBar[ScrollDir_Horz], TRUE );
2265
2266 gtk_container_add( GTK_CONTAINER(m_widget), m_wxwindow );
2267
2268 // connect various scroll-related events
2269 for ( int dir = 0; dir < ScrollDir_Max; dir++ )
2270 {
2271 // these handlers block mouse events to any window during scrolling
2272 // such as motion events and prevent GTK and wxWidgets from fighting
2273 // over where the slider should be
2274 g_signal_connect(m_scrollBar[dir], "button_press_event",
2275 G_CALLBACK(gtk_scrollbar_button_press_event), this);
2276 g_signal_connect(m_scrollBar[dir], "button_release_event",
2277 G_CALLBACK(gtk_scrollbar_button_release_event), this);
2278
2279 gulong handler_id = g_signal_connect(m_scrollBar[dir], "event_after",
2280 G_CALLBACK(gtk_scrollbar_event_after), this);
2281 g_signal_handler_block(m_scrollBar[dir], handler_id);
2282
2283 // these handlers get notified when scrollbar slider moves
2284 g_signal_connect_after(m_scrollBar[dir], "value_changed",
2285 G_CALLBACK(gtk_scrollbar_value_changed), this);
2286 }
2287
2288 gtk_widget_show( m_wxwindow );
2289 }
2290 g_object_ref(m_widget);
2291
2292 if (m_parent)
2293 m_parent->DoAddChild( this );
2294
2295 m_focusWidget = m_wxwindow;
2296
2297 SetCanFocus(AcceptsFocus());
2298
2299 PostCreation();
2300
2301 return true;
2302 }
2303
2304 wxWindowGTK::~wxWindowGTK()
2305 {
2306 SendDestroyEvent();
2307
2308 if (gs_currentFocus == this)
2309 gs_currentFocus = NULL;
2310 if (gs_pendingFocus == this)
2311 gs_pendingFocus = NULL;
2312
2313 if ( gs_deferredFocusOut == this )
2314 gs_deferredFocusOut = NULL;
2315
2316 m_hasVMT = false;
2317
2318 // destroy children before destroying this window itself
2319 DestroyChildren();
2320
2321 // unhook focus handlers to prevent stray events being
2322 // propagated to this (soon to be) dead object
2323 if (m_focusWidget != NULL)
2324 {
2325 g_signal_handlers_disconnect_by_func (m_focusWidget,
2326 (gpointer) gtk_window_focus_in_callback,
2327 this);
2328 g_signal_handlers_disconnect_by_func (m_focusWidget,
2329 (gpointer) gtk_window_focus_out_callback,
2330 this);
2331 }
2332
2333 if (m_widget)
2334 Show( false );
2335
2336 // delete before the widgets to avoid a crash on solaris
2337 delete m_imData;
2338 m_imData = NULL;
2339
2340 // avoid problem with GTK+ 2.18 where a frozen window causes the whole
2341 // TLW to be frozen, and if the window is then destroyed, nothing ever
2342 // gets painted again
2343 if (IsFrozen())
2344 DoThaw();
2345
2346 if (m_widget)
2347 {
2348 // Note that gtk_widget_destroy() does not destroy the widget, it just
2349 // emits the "destroy" signal. The widget is not actually destroyed
2350 // until its reference count drops to zero.
2351 gtk_widget_destroy(m_widget);
2352 // Release our reference, should be the last one
2353 g_object_unref(m_widget);
2354 m_widget = NULL;
2355 }
2356 m_wxwindow = NULL;
2357 }
2358
2359 bool wxWindowGTK::PreCreation( wxWindowGTK *parent, const wxPoint &pos, const wxSize &size )
2360 {
2361 if ( GTKNeedsParent() )
2362 {
2363 wxCHECK_MSG( parent, false, wxT("Must have non-NULL parent") );
2364 }
2365
2366 // Use either the given size, or the default if -1 is given.
2367 // See wxWindowBase for these functions.
2368 m_width = WidthDefault(size.x) ;
2369 m_height = HeightDefault(size.y);
2370
2371 if (pos != wxDefaultPosition)
2372 {
2373 m_x = pos.x;
2374 m_y = pos.y;
2375 }
2376
2377 return true;
2378 }
2379
2380 void wxWindowGTK::PostCreation()
2381 {
2382 wxASSERT_MSG( (m_widget != NULL), wxT("invalid window") );
2383
2384 #if wxGTK_HAS_COMPOSITING_SUPPORT
2385 // Set RGBA visual as soon as possible to minimize the possibility that
2386 // somebody uses the wrong one.
2387 if ( m_backgroundStyle == wxBG_STYLE_TRANSPARENT &&
2388 IsTransparentBackgroundSupported() )
2389 {
2390 GdkScreen *screen = gtk_widget_get_screen (m_widget);
2391
2392 GdkColormap *rgba_colormap = gdk_screen_get_rgba_colormap (screen);
2393
2394 if (rgba_colormap)
2395 gtk_widget_set_colormap(m_widget, rgba_colormap);
2396 }
2397 #endif // wxGTK_HAS_COMPOSITING_SUPPORT
2398
2399 if (m_wxwindow)
2400 {
2401 if (!m_noExpose)
2402 {
2403 // these get reported to wxWidgets -> wxPaintEvent
2404
2405 g_signal_connect (m_wxwindow, "expose_event",
2406 G_CALLBACK (gtk_window_expose_callback), this);
2407
2408 if (GetLayoutDirection() == wxLayout_LeftToRight)
2409 gtk_widget_set_redraw_on_allocate(m_wxwindow, HasFlag(wxFULL_REPAINT_ON_RESIZE));
2410 }
2411
2412 // Create input method handler
2413 m_imData = new wxGtkIMData;
2414
2415 // Cannot handle drawing preedited text yet
2416 gtk_im_context_set_use_preedit( m_imData->context, FALSE );
2417
2418 g_signal_connect (m_imData->context, "commit",
2419 G_CALLBACK (gtk_wxwindow_commit_cb), this);
2420 g_signal_connect(m_wxwindow, "unrealize", G_CALLBACK(unrealize), this);
2421 }
2422
2423 // focus handling
2424
2425 if (!GTK_IS_WINDOW(m_widget))
2426 {
2427 if (m_focusWidget == NULL)
2428 m_focusWidget = m_widget;
2429
2430 if (m_wxwindow)
2431 {
2432 g_signal_connect (m_focusWidget, "focus_in_event",
2433 G_CALLBACK (gtk_window_focus_in_callback), this);
2434 g_signal_connect (m_focusWidget, "focus_out_event",
2435 G_CALLBACK (gtk_window_focus_out_callback), this);
2436 }
2437 else
2438 {
2439 g_signal_connect_after (m_focusWidget, "focus_in_event",
2440 G_CALLBACK (gtk_window_focus_in_callback), this);
2441 g_signal_connect_after (m_focusWidget, "focus_out_event",
2442 G_CALLBACK (gtk_window_focus_out_callback), this);
2443 }
2444 }
2445
2446 if ( !AcceptsFocusFromKeyboard() )
2447 {
2448 SetCanFocus(false);
2449
2450 g_signal_connect(m_widget, "focus",
2451 G_CALLBACK(wx_window_focus_callback), this);
2452 }
2453
2454 // connect to the various key and mouse handlers
2455
2456 GtkWidget *connect_widget = GetConnectWidget();
2457
2458 ConnectWidget( connect_widget );
2459
2460 // We cannot set colours, fonts and cursors before the widget has been
2461 // realized, so we do this directly after realization -- unless the widget
2462 // was in fact realized already.
2463 if ( gtk_widget_get_realized(connect_widget) )
2464 {
2465 gtk_window_realized_callback(connect_widget, this);
2466 }
2467 else
2468 {
2469 g_signal_connect (connect_widget, "realize",
2470 G_CALLBACK (gtk_window_realized_callback), this);
2471 }
2472
2473 if (!IsTopLevel())
2474 {
2475 g_signal_connect(m_wxwindow ? m_wxwindow : m_widget, "size_allocate",
2476 G_CALLBACK(size_allocate), this);
2477 }
2478
2479 #if GTK_CHECK_VERSION(2, 8, 0)
2480 if ( gtk_check_version(2,8,0) == NULL )
2481 {
2482 // Make sure we can notify the app when mouse capture is lost
2483 if ( m_wxwindow )
2484 {
2485 g_signal_connect (m_wxwindow, "grab_broken_event",
2486 G_CALLBACK (gtk_window_grab_broken), this);
2487 }
2488
2489 if ( connect_widget != m_wxwindow )
2490 {
2491 g_signal_connect (connect_widget, "grab_broken_event",
2492 G_CALLBACK (gtk_window_grab_broken), this);
2493 }
2494 }
2495 #endif // GTK+ >= 2.8
2496
2497 if ( GTKShouldConnectSizeRequest() )
2498 {
2499 // This is needed if we want to add our windows into native
2500 // GTK controls, such as the toolbar. With this callback, the
2501 // toolbar gets to know the correct size (the one set by the
2502 // programmer). Sadly, it misbehaves for wxComboBox.
2503 g_signal_connect (m_widget, "size_request",
2504 G_CALLBACK (wxgtk_window_size_request_callback),
2505 this);
2506 }
2507
2508 InheritAttributes();
2509
2510 m_hasVMT = true;
2511
2512 SetLayoutDirection(wxLayout_Default);
2513
2514 // unless the window was created initially hidden (i.e. Hide() had been
2515 // called before Create()), we should show it at GTK+ level as well
2516 if ( IsShown() )
2517 gtk_widget_show( m_widget );
2518 }
2519
2520 unsigned long
2521 wxWindowGTK::GTKConnectWidget(const char *signal, wxGTKCallback callback)
2522 {
2523 return g_signal_connect(m_widget, signal, callback, this);
2524 }
2525
2526 void wxWindowGTK::ConnectWidget( GtkWidget *widget )
2527 {
2528 g_signal_connect (widget, "key_press_event",
2529 G_CALLBACK (gtk_window_key_press_callback), this);
2530 g_signal_connect (widget, "key_release_event",
2531 G_CALLBACK (gtk_window_key_release_callback), this);
2532 g_signal_connect (widget, "button_press_event",
2533 G_CALLBACK (gtk_window_button_press_callback), this);
2534 g_signal_connect (widget, "button_release_event",
2535 G_CALLBACK (gtk_window_button_release_callback), this);
2536 g_signal_connect (widget, "motion_notify_event",
2537 G_CALLBACK (gtk_window_motion_notify_callback), this);
2538
2539 g_signal_connect (widget, "scroll_event",
2540 G_CALLBACK (window_scroll_event), this);
2541 if (m_scrollBar[ScrollDir_Horz])
2542 g_signal_connect (m_scrollBar[ScrollDir_Horz], "scroll_event",
2543 G_CALLBACK (window_scroll_event_hscrollbar), this);
2544 if (m_scrollBar[ScrollDir_Vert])
2545 g_signal_connect (m_scrollBar[ScrollDir_Vert], "scroll_event",
2546 G_CALLBACK (window_scroll_event), this);
2547
2548 g_signal_connect (widget, "popup_menu",
2549 G_CALLBACK (wxgtk_window_popup_menu_callback), this);
2550 g_signal_connect (widget, "enter_notify_event",
2551 G_CALLBACK (gtk_window_enter_callback), this);
2552 g_signal_connect (widget, "leave_notify_event",
2553 G_CALLBACK (gtk_window_leave_callback), this);
2554
2555 if (m_wxwindow && (IsTopLevel() || HasFlag(wxBORDER_RAISED | wxBORDER_SUNKEN | wxBORDER_THEME)))
2556 g_signal_connect (m_wxwindow, "style_set",
2557 G_CALLBACK (gtk_window_style_set_callback), this);
2558 }
2559
2560 bool wxWindowGTK::Destroy()
2561 {
2562 m_hasVMT = false;
2563
2564 return wxWindowBase::Destroy();
2565 }
2566
2567 void wxWindowGTK::DoMoveWindow(int x, int y, int width, int height)
2568 {
2569 GtkWidget* parent = gtk_widget_get_parent(m_widget);
2570 if (WX_IS_PIZZA(parent))
2571 {
2572 WX_PIZZA(parent)->move(m_widget, x, y);
2573 gtk_widget_set_size_request(m_widget, width, height);
2574 }
2575 else
2576 gtk_widget_queue_resize(m_widget);
2577 }
2578
2579 void wxWindowGTK::ConstrainSize()
2580 {
2581 #ifdef __WXGPE__
2582 // GPE's window manager doesn't like size hints at all, esp. when the user
2583 // has to use the virtual keyboard, so don't constrain size there
2584 if (!IsTopLevel())
2585 #endif
2586 {
2587 const wxSize minSize = GetMinSize();
2588 const wxSize maxSize = GetMaxSize();
2589 if (minSize.x > 0 && m_width < minSize.x) m_width = minSize.x;
2590 if (minSize.y > 0 && m_height < minSize.y) m_height = minSize.y;
2591 if (maxSize.x > 0 && m_width > maxSize.x) m_width = maxSize.x;
2592 if (maxSize.y > 0 && m_height > maxSize.y) m_height = maxSize.y;
2593 }
2594 }
2595
2596 void wxWindowGTK::DoSetSize( int x, int y, int width, int height, int sizeFlags )
2597 {
2598 wxCHECK_RET(m_widget, "invalid window");
2599
2600 int scrollX = 0, scrollY = 0;
2601 GtkWidget* parent = gtk_widget_get_parent(m_widget);
2602 if (WX_IS_PIZZA(parent))
2603 {
2604 wxPizza* pizza = WX_PIZZA(parent);
2605 scrollX = pizza->m_scroll_x;
2606 scrollY = pizza->m_scroll_y;
2607 }
2608 if (x != -1 || (sizeFlags & wxSIZE_ALLOW_MINUS_ONE))
2609 x += scrollX;
2610 else
2611 x = m_x;
2612 if (y != -1 || (sizeFlags & wxSIZE_ALLOW_MINUS_ONE))
2613 y += scrollY;
2614 else
2615 y = m_y;
2616
2617 // calculate the best size if we should auto size the window
2618 if ( ((sizeFlags & wxSIZE_AUTO_WIDTH) && width == -1) ||
2619 ((sizeFlags & wxSIZE_AUTO_HEIGHT) && height == -1) )
2620 {
2621 const wxSize sizeBest = GetBestSize();
2622 if ( (sizeFlags & wxSIZE_AUTO_WIDTH) && width == -1 )
2623 width = sizeBest.x;
2624 if ( (sizeFlags & wxSIZE_AUTO_HEIGHT) && height == -1 )
2625 height = sizeBest.y;
2626 }
2627
2628 if (width == -1)
2629 width = m_width;
2630 if (height == -1)
2631 height = m_height;
2632
2633 const bool sizeChange = m_width != width || m_height != height;
2634 if (sizeChange || m_x != x || m_y != y)
2635 {
2636 m_x = x;
2637 m_y = y;
2638 m_width = width;
2639 m_height = height;
2640
2641 /* the default button has a border around it */
2642 if (gtk_widget_get_can_default(m_widget))
2643 {
2644 GtkBorder *default_border = NULL;
2645 gtk_widget_style_get( m_widget, "default_border", &default_border, NULL );
2646 if (default_border)
2647 {
2648 x -= default_border->left;
2649 y -= default_border->top;
2650 width += default_border->left + default_border->right;
2651 height += default_border->top + default_border->bottom;
2652 gtk_border_free( default_border );
2653 }
2654 }
2655
2656 DoMoveWindow(x, y, width, height);
2657 }
2658
2659 if ((sizeChange && !m_nativeSizeEvent) || (sizeFlags & wxSIZE_FORCE_EVENT))
2660 {
2661 // update these variables to keep size_allocate handler
2662 // from sending another size event for this change
2663 GetClientSize( &m_oldClientWidth, &m_oldClientHeight );
2664
2665 wxSizeEvent event( wxSize(m_width,m_height), GetId() );
2666 event.SetEventObject( this );
2667 HandleWindowEvent( event );
2668 }
2669 }
2670
2671 bool wxWindowGTK::GTKShowFromOnIdle()
2672 {
2673 if (IsShown() && m_showOnIdle && !gtk_widget_get_visible (m_widget))
2674 {
2675 GtkAllocation alloc;
2676 alloc.x = m_x;
2677 alloc.y = m_y;
2678 alloc.width = m_width;
2679 alloc.height = m_height;
2680 gtk_widget_size_allocate( m_widget, &alloc );
2681 gtk_widget_show( m_widget );
2682 wxShowEvent eventShow(GetId(), true);
2683 eventShow.SetEventObject(this);
2684 HandleWindowEvent(eventShow);
2685 m_showOnIdle = false;
2686 return true;
2687 }
2688
2689 return false;
2690 }
2691
2692 void wxWindowGTK::OnInternalIdle()
2693 {
2694 if ( gs_deferredFocusOut )
2695 GTKHandleDeferredFocusOut();
2696
2697 // Check if we have to show window now
2698 if (GTKShowFromOnIdle()) return;
2699
2700 if ( m_dirtyTabOrder )
2701 {
2702 m_dirtyTabOrder = false;
2703 RealizeTabOrder();
2704 }
2705
2706 wxWindowBase::OnInternalIdle();
2707 }
2708
2709 void wxWindowGTK::DoGetSize( int *width, int *height ) const
2710 {
2711 if (width) (*width) = m_width;
2712 if (height) (*height) = m_height;
2713 }
2714
2715 void wxWindowGTK::DoSetClientSize( int width, int height )
2716 {
2717 wxCHECK_RET( (m_widget != NULL), wxT("invalid window") );
2718
2719 const wxSize size = GetSize();
2720 const wxSize clientSize = GetClientSize();
2721 SetSize(width + (size.x - clientSize.x), height + (size.y - clientSize.y));
2722 }
2723
2724 void wxWindowGTK::DoGetClientSize( int *width, int *height ) const
2725 {
2726 wxCHECK_RET( (m_widget != NULL), wxT("invalid window") );
2727
2728 int w = m_width;
2729 int h = m_height;
2730
2731 if ( m_wxwindow )
2732 {
2733 // if window is scrollable, account for scrollbars
2734 if ( GTK_IS_SCROLLED_WINDOW(m_widget) )
2735 {
2736 GtkPolicyType policy[ScrollDir_Max];
2737 gtk_scrolled_window_get_policy(GTK_SCROLLED_WINDOW(m_widget),
2738 &policy[ScrollDir_Horz],
2739 &policy[ScrollDir_Vert]);
2740
2741 for ( int i = 0; i < ScrollDir_Max; i++ )
2742 {
2743 // don't account for the scrollbars we don't have
2744 GtkRange * const range = m_scrollBar[i];
2745 if ( !range )
2746 continue;
2747
2748 // nor for the ones we have but don't current show
2749 switch ( policy[i] )
2750 {
2751 case GTK_POLICY_NEVER:
2752 // never shown so doesn't take any place
2753 continue;
2754
2755 case GTK_POLICY_ALWAYS:
2756 // no checks necessary
2757 break;
2758
2759 case GTK_POLICY_AUTOMATIC:
2760 // may be shown or not, check
2761 GtkAdjustment *adj = gtk_range_get_adjustment(range);
2762 if (gtk_adjustment_get_upper(adj) <= gtk_adjustment_get_page_size(adj))
2763 continue;
2764 }
2765
2766 GtkScrolledWindowClass *scroll_class =
2767 GTK_SCROLLED_WINDOW_CLASS( GTK_OBJECT_GET_CLASS(m_widget) );
2768
2769 GtkRequisition req;
2770 gtk_widget_size_request(GTK_WIDGET(range), &req);
2771 if (i == ScrollDir_Horz)
2772 h -= req.height + scroll_class->scrollbar_spacing;
2773 else
2774 w -= req.width + scroll_class->scrollbar_spacing;
2775 }
2776 }
2777
2778 const wxSize sizeBorders = DoGetBorderSize();
2779 w -= sizeBorders.x;
2780 h -= sizeBorders.y;
2781
2782 if (w < 0)
2783 w = 0;
2784 if (h < 0)
2785 h = 0;
2786 }
2787
2788 if (width) *width = w;
2789 if (height) *height = h;
2790 }
2791
2792 wxSize wxWindowGTK::DoGetBorderSize() const
2793 {
2794 if ( !m_wxwindow )
2795 return wxWindowBase::DoGetBorderSize();
2796
2797 int x, y;
2798 WX_PIZZA(m_wxwindow)->get_border_widths(x, y);
2799
2800 return 2*wxSize(x, y);
2801 }
2802
2803 void wxWindowGTK::DoGetPosition( int *x, int *y ) const
2804 {
2805 int dx = 0;
2806 int dy = 0;
2807 GtkWidget* parent = NULL;
2808 if (m_widget)
2809 parent = gtk_widget_get_parent(m_widget);
2810 if (WX_IS_PIZZA(parent))
2811 {
2812 wxPizza* pizza = WX_PIZZA(parent);
2813 dx = pizza->m_scroll_x;
2814 dy = pizza->m_scroll_y;
2815 }
2816 if (x) (*x) = m_x - dx;
2817 if (y) (*y) = m_y - dy;
2818 }
2819
2820 void wxWindowGTK::DoClientToScreen( int *x, int *y ) const
2821 {
2822 wxCHECK_RET( (m_widget != NULL), wxT("invalid window") );
2823
2824 if (gtk_widget_get_window(m_widget) == NULL) return;
2825
2826 GdkWindow *source = NULL;
2827 if (m_wxwindow)
2828 source = gtk_widget_get_window(m_wxwindow);
2829 else
2830 source = gtk_widget_get_window(m_widget);
2831
2832 int org_x = 0;
2833 int org_y = 0;
2834 gdk_window_get_origin( source, &org_x, &org_y );
2835
2836 if (!m_wxwindow)
2837 {
2838 if (!gtk_widget_get_has_window(m_widget))
2839 {
2840 GtkAllocation a;
2841 gtk_widget_get_allocation(m_widget, &a);
2842 org_x += a.x;
2843 org_y += a.y;
2844 }
2845 }
2846
2847
2848 if (x)
2849 {
2850 if (GetLayoutDirection() == wxLayout_RightToLeft)
2851 *x = (GetClientSize().x - *x) + org_x;
2852 else
2853 *x += org_x;
2854 }
2855
2856 if (y) *y += org_y;
2857 }
2858
2859 void wxWindowGTK::DoScreenToClient( int *x, int *y ) const
2860 {
2861 wxCHECK_RET( (m_widget != NULL), wxT("invalid window") );
2862
2863 if (!gtk_widget_get_realized(m_widget)) return;
2864
2865 GdkWindow *source = NULL;
2866 if (m_wxwindow)
2867 source = gtk_widget_get_window(m_wxwindow);
2868 else
2869 source = gtk_widget_get_window(m_widget);
2870
2871 int org_x = 0;
2872 int org_y = 0;
2873 gdk_window_get_origin( source, &org_x, &org_y );
2874
2875 if (!m_wxwindow)
2876 {
2877 if (!gtk_widget_get_has_window(m_widget))
2878 {
2879 GtkAllocation a;
2880 gtk_widget_get_allocation(m_widget, &a);
2881 org_x += a.x;
2882 org_y += a.y;
2883 }
2884 }
2885
2886 if (x)
2887 {
2888 if (GetLayoutDirection() == wxLayout_RightToLeft)
2889 *x = (GetClientSize().x - *x) - org_x;
2890 else
2891 *x -= org_x;
2892 }
2893 if (y) *y -= org_y;
2894 }
2895
2896 bool wxWindowGTK::Show( bool show )
2897 {
2898 if ( !wxWindowBase::Show(show) )
2899 {
2900 // nothing to do
2901 return false;
2902 }
2903
2904 // notice that we may call Hide() before the window is created and this is
2905 // actually useful to create it hidden initially -- but we can't call
2906 // Show() before it is created
2907 if ( !m_widget )
2908 {
2909 wxASSERT_MSG( !show, "can't show invalid window" );
2910 return true;
2911 }
2912
2913 if ( show )
2914 {
2915 if ( m_showOnIdle )
2916 {
2917 // defer until later
2918 return true;
2919 }
2920
2921 gtk_widget_show(m_widget);
2922 }
2923 else // hide
2924 {
2925 gtk_widget_hide(m_widget);
2926 }
2927
2928 wxShowEvent eventShow(GetId(), show);
2929 eventShow.SetEventObject(this);
2930 HandleWindowEvent(eventShow);
2931
2932 return true;
2933 }
2934
2935 void wxWindowGTK::DoEnable( bool enable )
2936 {
2937 wxCHECK_RET( (m_widget != NULL), wxT("invalid window") );
2938
2939 gtk_widget_set_sensitive( m_widget, enable );
2940 if (m_wxwindow && (m_wxwindow != m_widget))
2941 gtk_widget_set_sensitive( m_wxwindow, enable );
2942 }
2943
2944 int wxWindowGTK::GetCharHeight() const
2945 {
2946 wxCHECK_MSG( (m_widget != NULL), 12, wxT("invalid window") );
2947
2948 wxFont font = GetFont();
2949 wxCHECK_MSG( font.IsOk(), 12, wxT("invalid font") );
2950
2951 PangoContext* context = gtk_widget_get_pango_context(m_widget);
2952
2953 if (!context)
2954 return 0;
2955
2956 PangoFontDescription *desc = font.GetNativeFontInfo()->description;
2957 PangoLayout *layout = pango_layout_new(context);
2958 pango_layout_set_font_description(layout, desc);
2959 pango_layout_set_text(layout, "H", 1);
2960 PangoLayoutLine *line = (PangoLayoutLine *)pango_layout_get_lines(layout)->data;
2961
2962 PangoRectangle rect;
2963 pango_layout_line_get_extents(line, NULL, &rect);
2964
2965 g_object_unref (layout);
2966
2967 return (int) PANGO_PIXELS(rect.height);
2968 }
2969
2970 int wxWindowGTK::GetCharWidth() const
2971 {
2972 wxCHECK_MSG( (m_widget != NULL), 8, wxT("invalid window") );
2973
2974 wxFont font = GetFont();
2975 wxCHECK_MSG( font.IsOk(), 8, wxT("invalid font") );
2976
2977 PangoContext* context = gtk_widget_get_pango_context(m_widget);
2978
2979 if (!context)
2980 return 0;
2981
2982 PangoFontDescription *desc = font.GetNativeFontInfo()->description;
2983 PangoLayout *layout = pango_layout_new(context);
2984 pango_layout_set_font_description(layout, desc);
2985 pango_layout_set_text(layout, "g", 1);
2986 PangoLayoutLine *line = (PangoLayoutLine *)pango_layout_get_lines(layout)->data;
2987
2988 PangoRectangle rect;
2989 pango_layout_line_get_extents(line, NULL, &rect);
2990
2991 g_object_unref (layout);
2992
2993 return (int) PANGO_PIXELS(rect.width);
2994 }
2995
2996 void wxWindowGTK::DoGetTextExtent( const wxString& string,
2997 int *x,
2998 int *y,
2999 int *descent,
3000 int *externalLeading,
3001 const wxFont *theFont ) const
3002 {
3003 wxFont fontToUse = theFont ? *theFont : GetFont();
3004
3005 wxCHECK_RET( fontToUse.IsOk(), wxT("invalid font") );
3006
3007 if (string.empty())
3008 {
3009 if (x) (*x) = 0;
3010 if (y) (*y) = 0;
3011 return;
3012 }
3013
3014 PangoContext *context = NULL;
3015 if (m_widget)
3016 context = gtk_widget_get_pango_context( m_widget );
3017
3018 if (!context)
3019 {
3020 if (x) (*x) = 0;
3021 if (y) (*y) = 0;
3022 return;
3023 }
3024
3025 PangoFontDescription *desc = fontToUse.GetNativeFontInfo()->description;
3026 PangoLayout *layout = pango_layout_new(context);
3027 pango_layout_set_font_description(layout, desc);
3028 {
3029 const wxCharBuffer data = wxGTK_CONV( string );
3030 if ( data )
3031 pango_layout_set_text(layout, data, strlen(data));
3032 }
3033
3034 PangoRectangle rect;
3035 pango_layout_get_extents(layout, NULL, &rect);
3036
3037 if (x) (*x) = (wxCoord) PANGO_PIXELS(rect.width);
3038 if (y) (*y) = (wxCoord) PANGO_PIXELS(rect.height);
3039 if (descent)
3040 {
3041 PangoLayoutIter *iter = pango_layout_get_iter(layout);
3042 int baseline = pango_layout_iter_get_baseline(iter);
3043 pango_layout_iter_free(iter);
3044 *descent = *y - PANGO_PIXELS(baseline);
3045 }
3046 if (externalLeading) (*externalLeading) = 0; // ??
3047
3048 g_object_unref (layout);
3049 }
3050
3051 void wxWindowGTK::GTKDisableFocusOutEvent()
3052 {
3053 g_signal_handlers_block_by_func( m_focusWidget,
3054 (gpointer) gtk_window_focus_out_callback, this);
3055 }
3056
3057 void wxWindowGTK::GTKEnableFocusOutEvent()
3058 {
3059 g_signal_handlers_unblock_by_func( m_focusWidget,
3060 (gpointer) gtk_window_focus_out_callback, this);
3061 }
3062
3063 bool wxWindowGTK::GTKHandleFocusIn()
3064 {
3065 // Disable default focus handling for custom windows since the default GTK+
3066 // handler issues a repaint
3067 const bool retval = m_wxwindow ? true : false;
3068
3069
3070 // NB: if there's still unprocessed deferred focus-out event (see
3071 // GTKHandleFocusOut() for explanation), we need to process it first so
3072 // that the order of focus events -- focus-out first, then focus-in
3073 // elsewhere -- is preserved
3074 if ( gs_deferredFocusOut )
3075 {
3076 if ( GTKNeedsToFilterSameWindowFocus() &&
3077 gs_deferredFocusOut == this )
3078 {
3079 // GTK+ focus changed from this wxWindow back to itself, so don't
3080 // emit any events at all
3081 wxLogTrace(TRACE_FOCUS,
3082 "filtered out spurious focus change within %s(%p, %s)",
3083 GetClassInfo()->GetClassName(), this, GetLabel());
3084 gs_deferredFocusOut = NULL;
3085 return retval;
3086 }
3087
3088 // otherwise we need to send focus-out first
3089 wxASSERT_MSG ( gs_deferredFocusOut != this,
3090 "GTKHandleFocusIn(GTKFocus_Normal) called even though focus changed back to itself - derived class should handle this" );
3091 GTKHandleDeferredFocusOut();
3092 }
3093
3094
3095 wxLogTrace(TRACE_FOCUS,
3096 "handling focus_in event for %s(%p, %s)",
3097 GetClassInfo()->GetClassName(), this, GetLabel());
3098
3099 if (m_imData)
3100 gtk_im_context_focus_in(m_imData->context);
3101
3102 gs_currentFocus = this;
3103 gs_pendingFocus = NULL;
3104
3105 #if wxUSE_CARET
3106 // caret needs to be informed about focus change
3107 wxCaret *caret = GetCaret();
3108 if ( caret )
3109 {
3110 caret->OnSetFocus();
3111 }
3112 #endif // wxUSE_CARET
3113
3114 // Notify the parent keeping track of focus for the kbd navigation
3115 // purposes that we got it.
3116 wxChildFocusEvent eventChildFocus(static_cast<wxWindow*>(this));
3117 GTKProcessEvent(eventChildFocus);
3118
3119 wxFocusEvent eventFocus(wxEVT_SET_FOCUS, GetId());
3120 eventFocus.SetEventObject(this);
3121 GTKProcessEvent(eventFocus);
3122
3123 return retval;
3124 }
3125
3126 bool wxWindowGTK::GTKHandleFocusOut()
3127 {
3128 // Disable default focus handling for custom windows since the default GTK+
3129 // handler issues a repaint
3130 const bool retval = m_wxwindow ? true : false;
3131
3132
3133 // NB: If a control is composed of several GtkWidgets and when focus
3134 // changes from one of them to another within the same wxWindow, we get
3135 // a focus-out event followed by focus-in for another GtkWidget owned
3136 // by the same wx control. We don't want to generate two spurious
3137 // wxEVT_SET_FOCUS events in this case, so we defer sending wx events
3138 // from GTKHandleFocusOut() until we know for sure it's not coming back
3139 // (i.e. in GTKHandleFocusIn() or at idle time).
3140 if ( GTKNeedsToFilterSameWindowFocus() )
3141 {
3142 wxASSERT_MSG( gs_deferredFocusOut == NULL,
3143 "deferred focus out event already pending" );
3144 wxLogTrace(TRACE_FOCUS,
3145 "deferring focus_out event for %s(%p, %s)",
3146 GetClassInfo()->GetClassName(), this, GetLabel());
3147 gs_deferredFocusOut = this;
3148 return retval;
3149 }
3150
3151 GTKHandleFocusOutNoDeferring();
3152
3153 return retval;
3154 }
3155
3156 void wxWindowGTK::GTKHandleFocusOutNoDeferring()
3157 {
3158 wxLogTrace(TRACE_FOCUS,
3159 "handling focus_out event for %s(%p, %s)",
3160 GetClassInfo()->GetClassName(), this, GetLabel());
3161
3162 if (m_imData)
3163 gtk_im_context_focus_out(m_imData->context);
3164
3165 if ( gs_currentFocus != this )
3166 {
3167 // Something is terribly wrong, gs_currentFocus is out of sync with the
3168 // real focus. We will reset it to NULL anyway, because after this
3169 // focus-out event is handled, one of the following with happen:
3170 //
3171 // * either focus will go out of the app altogether, in which case
3172 // gs_currentFocus _should_ be NULL
3173 //
3174 // * or it goes to another control, in which case focus-in event will
3175 // follow immediately and it will set gs_currentFocus to the right
3176 // value
3177 wxLogDebug("window %s(%p, %s) lost focus even though it didn't have it",
3178 GetClassInfo()->GetClassName(), this, GetLabel());
3179 }
3180 gs_currentFocus = NULL;
3181
3182 #if wxUSE_CARET
3183 // caret needs to be informed about focus change
3184 wxCaret *caret = GetCaret();
3185 if ( caret )
3186 {
3187 caret->OnKillFocus();
3188 }
3189 #endif // wxUSE_CARET
3190
3191 wxFocusEvent event( wxEVT_KILL_FOCUS, GetId() );
3192 event.SetEventObject( this );
3193 event.SetWindow( FindFocus() );
3194 GTKProcessEvent( event );
3195 }
3196
3197 /*static*/
3198 void wxWindowGTK::GTKHandleDeferredFocusOut()
3199 {
3200 // NB: See GTKHandleFocusOut() for explanation. This function is called
3201 // from either GTKHandleFocusIn() or OnInternalIdle() to process
3202 // deferred event.
3203 if ( gs_deferredFocusOut )
3204 {
3205 wxWindowGTK *win = gs_deferredFocusOut;
3206 gs_deferredFocusOut = NULL;
3207
3208 wxLogTrace(TRACE_FOCUS,
3209 "processing deferred focus_out event for %s(%p, %s)",
3210 win->GetClassInfo()->GetClassName(), win, win->GetLabel());
3211
3212 win->GTKHandleFocusOutNoDeferring();
3213 }
3214 }
3215
3216 void wxWindowGTK::SetFocus()
3217 {
3218 wxCHECK_RET( m_widget != NULL, wxT("invalid window") );
3219
3220 // Setting "physical" focus is not immediate in GTK+ and while
3221 // gtk_widget_is_focus ("determines if the widget is the focus widget
3222 // within its toplevel", i.e. returns true for one widget per TLW, not
3223 // globally) returns true immediately after grabbing focus,
3224 // GTK_WIDGET_HAS_FOCUS (which returns true only for the one widget that
3225 // has focus at the moment) takes effect only after the window is shown
3226 // (if it was hidden at the moment of the call) or at the next event loop
3227 // iteration.
3228 //
3229 // Because we want to FindFocus() call immediately following
3230 // foo->SetFocus() to return foo, we have to keep track of "pending" focus
3231 // ourselves.
3232 gs_pendingFocus = this;
3233
3234 GtkWidget *widget = m_wxwindow ? m_wxwindow : m_focusWidget;
3235
3236 if ( GTK_IS_CONTAINER(widget) &&
3237 !gtk_widget_get_can_focus(widget) )
3238 {
3239 wxLogTrace(TRACE_FOCUS,
3240 wxT("Setting focus to a child of %s(%p, %s)"),
3241 GetClassInfo()->GetClassName(), this, GetLabel().c_str());
3242 gtk_widget_child_focus(widget, GTK_DIR_TAB_FORWARD);
3243 }
3244 else
3245 {
3246 wxLogTrace(TRACE_FOCUS,
3247 wxT("Setting focus to %s(%p, %s)"),
3248 GetClassInfo()->GetClassName(), this, GetLabel().c_str());
3249 gtk_widget_grab_focus(widget);
3250 }
3251 }
3252
3253 void wxWindowGTK::SetCanFocus(bool canFocus)
3254 {
3255 gtk_widget_set_can_focus(m_widget, canFocus);
3256
3257 if ( m_wxwindow && (m_widget != m_wxwindow) )
3258 {
3259 gtk_widget_set_can_focus(m_wxwindow, canFocus);
3260 }
3261 }
3262
3263 bool wxWindowGTK::Reparent( wxWindowBase *newParentBase )
3264 {
3265 wxCHECK_MSG( (m_widget != NULL), false, wxT("invalid window") );
3266
3267 wxWindowGTK * const newParent = (wxWindowGTK *)newParentBase;
3268
3269 wxASSERT( GTK_IS_WIDGET(m_widget) );
3270
3271 if ( !wxWindowBase::Reparent(newParent) )
3272 return false;
3273
3274 wxASSERT( GTK_IS_WIDGET(m_widget) );
3275
3276 // Notice that old m_parent pointer might be non-NULL here but the widget
3277 // still not have any parent at GTK level if it's a notebook page that had
3278 // been removed from the notebook so test this at GTK level and not wx one.
3279 if ( GtkWidget *parentGTK = gtk_widget_get_parent(m_widget) )
3280 gtk_container_remove(GTK_CONTAINER(parentGTK), m_widget);
3281
3282 wxASSERT( GTK_IS_WIDGET(m_widget) );
3283
3284 if (newParent)
3285 {
3286 if (gtk_widget_get_visible (newParent->m_widget))
3287 {
3288 m_showOnIdle = true;
3289 gtk_widget_hide( m_widget );
3290 }
3291 /* insert GTK representation */
3292 newParent->AddChildGTK(this);
3293 }
3294
3295 SetLayoutDirection(wxLayout_Default);
3296
3297 return true;
3298 }
3299
3300 void wxWindowGTK::DoAddChild(wxWindowGTK *child)
3301 {
3302 wxASSERT_MSG( (m_widget != NULL), wxT("invalid window") );
3303 wxASSERT_MSG( (child != NULL), wxT("invalid child window") );
3304
3305 /* add to list */
3306 AddChild( child );
3307
3308 /* insert GTK representation */
3309 AddChildGTK(child);
3310 }
3311
3312 void wxWindowGTK::AddChild(wxWindowBase *child)
3313 {
3314 wxWindowBase::AddChild(child);
3315 m_dirtyTabOrder = true;
3316 wxTheApp->WakeUpIdle();
3317 }
3318
3319 void wxWindowGTK::RemoveChild(wxWindowBase *child)
3320 {
3321 wxWindowBase::RemoveChild(child);
3322 m_dirtyTabOrder = true;
3323 wxTheApp->WakeUpIdle();
3324 }
3325
3326 /* static */
3327 wxLayoutDirection wxWindowGTK::GTKGetLayout(GtkWidget *widget)
3328 {
3329 return gtk_widget_get_direction(widget) == GTK_TEXT_DIR_RTL
3330 ? wxLayout_RightToLeft
3331 : wxLayout_LeftToRight;
3332 }
3333
3334 /* static */
3335 void wxWindowGTK::GTKSetLayout(GtkWidget *widget, wxLayoutDirection dir)
3336 {
3337 wxASSERT_MSG( dir != wxLayout_Default, wxT("invalid layout direction") );
3338
3339 gtk_widget_set_direction(widget,
3340 dir == wxLayout_RightToLeft ? GTK_TEXT_DIR_RTL
3341 : GTK_TEXT_DIR_LTR);
3342 }
3343
3344 wxLayoutDirection wxWindowGTK::GetLayoutDirection() const
3345 {
3346 return GTKGetLayout(m_widget);
3347 }
3348
3349 void wxWindowGTK::SetLayoutDirection(wxLayoutDirection dir)
3350 {
3351 if ( dir == wxLayout_Default )
3352 {
3353 const wxWindow *const parent = GetParent();
3354 if ( parent )
3355 {
3356 // inherit layout from parent.
3357 dir = parent->GetLayoutDirection();
3358 }
3359 else // no parent, use global default layout
3360 {
3361 dir = wxTheApp->GetLayoutDirection();
3362 }
3363 }
3364
3365 if ( dir == wxLayout_Default )
3366 return;
3367
3368 GTKSetLayout(m_widget, dir);
3369
3370 if (m_wxwindow && (m_wxwindow != m_widget))
3371 GTKSetLayout(m_wxwindow, dir);
3372 }
3373
3374 wxCoord
3375 wxWindowGTK::AdjustForLayoutDirection(wxCoord x,
3376 wxCoord WXUNUSED(width),
3377 wxCoord WXUNUSED(widthTotal)) const
3378 {
3379 // We now mirror the coordinates of RTL windows in wxPizza
3380 return x;
3381 }
3382
3383 void wxWindowGTK::DoMoveInTabOrder(wxWindow *win, WindowOrder move)
3384 {
3385 wxWindowBase::DoMoveInTabOrder(win, move);
3386 m_dirtyTabOrder = true;
3387 wxTheApp->WakeUpIdle();
3388 }
3389
3390 bool wxWindowGTK::DoNavigateIn(int flags)
3391 {
3392 if ( flags & wxNavigationKeyEvent::WinChange )
3393 {
3394 wxFAIL_MSG( wxT("not implemented") );
3395
3396 return false;
3397 }
3398 else // navigate inside the container
3399 {
3400 wxWindow *parent = wxGetTopLevelParent((wxWindow *)this);
3401 wxCHECK_MSG( parent, false, wxT("every window must have a TLW parent") );
3402
3403 GtkDirectionType dir;
3404 dir = flags & wxNavigationKeyEvent::IsForward ? GTK_DIR_TAB_FORWARD
3405 : GTK_DIR_TAB_BACKWARD;
3406
3407 gboolean rc;
3408 g_signal_emit_by_name(parent->m_widget, "focus", dir, &rc);
3409
3410 return rc == TRUE;
3411 }
3412 }
3413
3414 bool wxWindowGTK::GTKWidgetNeedsMnemonic() const
3415 {
3416 // none needed by default
3417 return false;
3418 }
3419
3420 void wxWindowGTK::GTKWidgetDoSetMnemonic(GtkWidget* WXUNUSED(w))
3421 {
3422 // nothing to do by default since none is needed
3423 }
3424
3425 void wxWindowGTK::RealizeTabOrder()
3426 {
3427 if (m_wxwindow)
3428 {
3429 if ( !m_children.empty() )
3430 {
3431 // we don't only construct the correct focus chain but also use
3432 // this opportunity to update the mnemonic widgets for the widgets
3433 // that need them
3434
3435 GList *chain = NULL;
3436 wxWindowGTK* mnemonicWindow = NULL;
3437
3438 for ( wxWindowList::const_iterator i = m_children.begin();
3439 i != m_children.end();
3440 ++i )
3441 {
3442 wxWindowGTK *win = *i;
3443
3444 bool focusableFromKeyboard = win->AcceptsFocusFromKeyboard();
3445
3446 if ( mnemonicWindow )
3447 {
3448 if ( focusableFromKeyboard )
3449 {
3450 // wxComboBox et al. needs to focus on on a different
3451 // widget than m_widget, so if the main widget isn't
3452 // focusable try the connect widget
3453 GtkWidget* w = win->m_widget;
3454 if ( !gtk_widget_get_can_focus(w) )
3455 {
3456 w = win->GetConnectWidget();
3457 if ( !gtk_widget_get_can_focus(w) )
3458 w = NULL;
3459 }
3460
3461 if ( w )
3462 {
3463 mnemonicWindow->GTKWidgetDoSetMnemonic(w);
3464 mnemonicWindow = NULL;
3465 }
3466 }
3467 }
3468 else if ( win->GTKWidgetNeedsMnemonic() )
3469 {
3470 mnemonicWindow = win;
3471 }
3472
3473 if ( focusableFromKeyboard )
3474 chain = g_list_prepend(chain, win->m_widget);
3475 }
3476
3477 chain = g_list_reverse(chain);
3478
3479 gtk_container_set_focus_chain(GTK_CONTAINER(m_wxwindow), chain);
3480 g_list_free(chain);
3481 }
3482 else // no children
3483 {
3484 gtk_container_unset_focus_chain(GTK_CONTAINER(m_wxwindow));
3485 }
3486 }
3487 }
3488
3489 void wxWindowGTK::Raise()
3490 {
3491 wxCHECK_RET( (m_widget != NULL), wxT("invalid window") );
3492
3493 if (m_wxwindow && gtk_widget_get_window(m_wxwindow))
3494 {
3495 gdk_window_raise(gtk_widget_get_window(m_wxwindow));
3496 }
3497 else if (gtk_widget_get_window(m_widget))
3498 {
3499 gdk_window_raise(gtk_widget_get_window(m_widget));
3500 }
3501 }
3502
3503 void wxWindowGTK::Lower()
3504 {
3505 wxCHECK_RET( (m_widget != NULL), wxT("invalid window") );
3506
3507 if (m_wxwindow && gtk_widget_get_window(m_wxwindow))
3508 {
3509 gdk_window_lower(gtk_widget_get_window(m_wxwindow));
3510 }
3511 else if (gtk_widget_get_window(m_widget))
3512 {
3513 gdk_window_lower(gtk_widget_get_window(m_widget));
3514 }
3515 }
3516
3517 bool wxWindowGTK::SetCursor( const wxCursor &cursor )
3518 {
3519 if ( !wxWindowBase::SetCursor(cursor.IsOk() ? cursor : *wxSTANDARD_CURSOR) )
3520 return false;
3521
3522 GTKUpdateCursor();
3523
3524 return true;
3525 }
3526
3527 void wxWindowGTK::GTKUpdateCursor(bool update_self /*=true*/, bool recurse /*=true*/)
3528 {
3529 if (update_self)
3530 {
3531 wxCursor cursor(g_globalCursor.IsOk() ? g_globalCursor : GetCursor());
3532 if ( cursor.IsOk() )
3533 {
3534 wxArrayGdkWindows windowsThis;
3535 GdkWindow* window = GTKGetWindow(windowsThis);
3536 if (window)
3537 gdk_window_set_cursor( window, cursor.GetCursor() );
3538 else
3539 {
3540 const size_t count = windowsThis.size();
3541 for ( size_t n = 0; n < count; n++ )
3542 {
3543 GdkWindow *win = windowsThis[n];
3544 // It can be zero if the window has not been realized yet.
3545 if ( win )
3546 {
3547 gdk_window_set_cursor(win, cursor.GetCursor());
3548 }
3549 }
3550 }
3551 }
3552 }
3553
3554 if (recurse)
3555 {
3556 for (wxWindowList::iterator it = GetChildren().begin(); it != GetChildren().end(); ++it)
3557 {
3558 (*it)->GTKUpdateCursor( true );
3559 }
3560 }
3561 }
3562
3563 void wxWindowGTK::WarpPointer( int x, int y )
3564 {
3565 wxCHECK_RET( (m_widget != NULL), wxT("invalid window") );
3566
3567 ClientToScreen(&x, &y);
3568 GdkDisplay* display = gtk_widget_get_display(m_widget);
3569 GdkScreen* screen = gtk_widget_get_screen(m_widget);
3570 #ifdef __WXGTK30__
3571 GdkDeviceManager* manager = gdk_display_get_device_manager(display);
3572 gdk_device_warp(gdk_device_manager_get_client_pointer(manager), screen, x, y);
3573 #else
3574 #ifdef GDK_WINDOWING_X11
3575 XWarpPointer(GDK_DISPLAY_XDISPLAY(display),
3576 None,
3577 GDK_WINDOW_XID(gdk_screen_get_root_window(screen)),
3578 0, 0, 0, 0, x, y);
3579 #endif
3580 #endif
3581 }
3582
3583 wxWindowGTK::ScrollDir wxWindowGTK::ScrollDirFromRange(GtkRange *range) const
3584 {
3585 // find the scrollbar which generated the event
3586 for ( int dir = 0; dir < ScrollDir_Max; dir++ )
3587 {
3588 if ( range == m_scrollBar[dir] )
3589 return (ScrollDir)dir;
3590 }
3591
3592 wxFAIL_MSG( wxT("event from unknown scrollbar received") );
3593
3594 return ScrollDir_Max;
3595 }
3596
3597 bool wxWindowGTK::DoScrollByUnits(ScrollDir dir, ScrollUnit unit, int units)
3598 {
3599 bool changed = false;
3600 GtkRange* range = m_scrollBar[dir];
3601 if ( range && units )
3602 {
3603 GtkAdjustment* adj = gtk_range_get_adjustment(range);
3604 double inc = unit == ScrollUnit_Line ? gtk_adjustment_get_step_increment(adj)
3605 : gtk_adjustment_get_page_increment(adj);
3606
3607 const int posOld = wxRound(gtk_adjustment_get_value(adj));
3608 gtk_range_set_value(range, posOld + units*inc);
3609
3610 changed = wxRound(gtk_adjustment_get_value(adj)) != posOld;
3611 }
3612
3613 return changed;
3614 }
3615
3616 bool wxWindowGTK::ScrollLines(int lines)
3617 {
3618 return DoScrollByUnits(ScrollDir_Vert, ScrollUnit_Line, lines);
3619 }
3620
3621 bool wxWindowGTK::ScrollPages(int pages)
3622 {
3623 return DoScrollByUnits(ScrollDir_Vert, ScrollUnit_Page, pages);
3624 }
3625
3626 void wxWindowGTK::Refresh(bool WXUNUSED(eraseBackground),
3627 const wxRect *rect)
3628 {
3629 if (m_wxwindow)
3630 {
3631 if (gtk_widget_get_mapped(m_wxwindow))
3632 {
3633 GdkWindow* window = gtk_widget_get_window(m_wxwindow);
3634 if (rect)
3635 {
3636 GdkRectangle r = { rect->x, rect->y, rect->width, rect->height };
3637 if (GetLayoutDirection() == wxLayout_RightToLeft)
3638 r.x = gdk_window_get_width(window) - r.x - rect->width;
3639 gdk_window_invalidate_rect(window, &r, true);
3640 }
3641 else
3642 gdk_window_invalidate_rect(window, NULL, true);
3643 }
3644 }
3645 else if (m_widget)
3646 {
3647 if (gtk_widget_get_mapped(m_widget))
3648 {
3649 if (rect)
3650 gtk_widget_queue_draw_area(m_widget, rect->x, rect->y, rect->width, rect->height);
3651 else
3652 gtk_widget_queue_draw(m_widget);
3653 }
3654 }
3655 }
3656
3657 void wxWindowGTK::Update()
3658 {
3659 if (m_widget && gtk_widget_get_mapped(m_widget))
3660 {
3661 GdkDisplay* display = gtk_widget_get_display(m_widget);
3662 // Flush everything out to the server, and wait for it to finish.
3663 // This ensures nothing will overwrite the drawing we are about to do.
3664 gdk_display_sync(display);
3665
3666 GdkWindow* window = GTKGetDrawingWindow();
3667 if (window == NULL)
3668 window = gtk_widget_get_window(m_widget);
3669 gdk_window_process_updates(window, true);
3670
3671 // Flush again, but no need to wait for it to finish
3672 gdk_display_flush(display);
3673 }
3674 }
3675
3676 bool wxWindowGTK::DoIsExposed( int x, int y ) const
3677 {
3678 return m_updateRegion.Contains(x, y) != wxOutRegion;
3679 }
3680
3681 bool wxWindowGTK::DoIsExposed( int x, int y, int w, int h ) const
3682 {
3683 if (GetLayoutDirection() == wxLayout_RightToLeft)
3684 return m_updateRegion.Contains(x-w, y, w, h) != wxOutRegion;
3685 else
3686 return m_updateRegion.Contains(x, y, w, h) != wxOutRegion;
3687 }
3688
3689 void wxWindowGTK::GtkSendPaintEvents()
3690 {
3691 if (!m_wxwindow)
3692 {
3693 m_updateRegion.Clear();
3694 return;
3695 }
3696 #if wxGTK_HAS_COMPOSITING_SUPPORT
3697 cairo_t* cr = NULL;
3698 #endif
3699 // Clip to paint region in wxClientDC
3700 m_clipPaintRegion = true;
3701
3702 m_nativeUpdateRegion = m_updateRegion;
3703
3704 if (GetLayoutDirection() == wxLayout_RightToLeft)
3705 {
3706 // Transform m_updateRegion under RTL
3707 m_updateRegion.Clear();
3708
3709 gint width;
3710 gdk_drawable_get_size(gtk_widget_get_window(m_wxwindow), &width, NULL);
3711
3712 wxRegionIterator upd( m_nativeUpdateRegion );
3713 while (upd)
3714 {
3715 wxRect rect;
3716 rect.x = upd.GetX();
3717 rect.y = upd.GetY();
3718 rect.width = upd.GetWidth();
3719 rect.height = upd.GetHeight();
3720
3721 rect.x = width - rect.x - rect.width;
3722 m_updateRegion.Union( rect );
3723
3724 ++upd;
3725 }
3726 }
3727
3728 switch ( GetBackgroundStyle() )
3729 {
3730 case wxBG_STYLE_TRANSPARENT:
3731 #if wxGTK_HAS_COMPOSITING_SUPPORT
3732 if (IsTransparentBackgroundSupported())
3733 {
3734 // Set a transparent background, so that overlaying in parent
3735 // might indeed let see through where this child did not
3736 // explicitly paint.
3737 // NB: it works also for top level windows (but this is the
3738 // windows manager which then does the compositing job)
3739 cr = gdk_cairo_create(m_wxwindow->window);
3740 gdk_cairo_region(cr, m_nativeUpdateRegion.GetRegion());
3741 cairo_clip(cr);
3742
3743 cairo_set_operator(cr, CAIRO_OPERATOR_CLEAR);
3744 cairo_paint(cr);
3745 cairo_set_operator(cr, CAIRO_OPERATOR_OVER);
3746 cairo_surface_flush(cairo_get_target(cr));
3747 }
3748 #endif // wxGTK_HAS_COMPOSITING_SUPPORT
3749 break;
3750
3751 case wxBG_STYLE_ERASE:
3752 {
3753 wxWindowDC dc( (wxWindow*)this );
3754 dc.SetDeviceClippingRegion( m_updateRegion );
3755
3756 // Work around gtk-qt <= 0.60 bug whereby the window colour
3757 // remains grey
3758 if ( UseBgCol() &&
3759 wxSystemOptions::
3760 GetOptionInt("gtk.window.force-background-colour") )
3761 {
3762 dc.SetBackground(GetBackgroundColour());
3763 dc.Clear();
3764 }
3765
3766 wxEraseEvent erase_event( GetId(), &dc );
3767 erase_event.SetEventObject( this );
3768
3769 if ( HandleWindowEvent(erase_event) )
3770 {
3771 // background erased, don't do it again
3772 break;
3773 }
3774 }
3775 // fall through
3776
3777 case wxBG_STYLE_SYSTEM:
3778 if ( GetThemeEnabled() )
3779 {
3780 // find ancestor from which to steal background
3781 wxWindow *parent = wxGetTopLevelParent((wxWindow *)this);
3782 if (!parent)
3783 parent = (wxWindow*)this;
3784
3785 if (gtk_widget_get_mapped(parent->m_widget))
3786 {
3787 wxRegionIterator upd( m_nativeUpdateRegion );
3788 while (upd)
3789 {
3790 GdkRectangle rect;
3791 rect.x = upd.GetX();
3792 rect.y = upd.GetY();
3793 rect.width = upd.GetWidth();
3794 rect.height = upd.GetHeight();
3795
3796 gtk_paint_flat_box(gtk_widget_get_style(parent->m_widget),
3797 GTKGetDrawingWindow(),
3798 gtk_widget_get_state(m_wxwindow),
3799 GTK_SHADOW_NONE,
3800 &rect,
3801 parent->m_widget,
3802 (char *)"base",
3803 0, 0, -1, -1 );
3804
3805 ++upd;
3806 }
3807 }
3808 }
3809 break;
3810
3811 case wxBG_STYLE_PAINT:
3812 // nothing to do: window will be painted over in EVT_PAINT
3813 break;
3814
3815 default:
3816 wxFAIL_MSG( "unsupported background style" );
3817 }
3818
3819 wxNcPaintEvent nc_paint_event( GetId() );
3820 nc_paint_event.SetEventObject( this );
3821 HandleWindowEvent( nc_paint_event );
3822
3823 wxPaintEvent paint_event( GetId() );
3824 paint_event.SetEventObject( this );
3825 HandleWindowEvent( paint_event );
3826
3827 #if wxGTK_HAS_COMPOSITING_SUPPORT
3828 if (IsTransparentBackgroundSupported())
3829 { // now composite children which need it
3830 // Overlay all our composite children on top of the painted area
3831 wxWindowList::compatibility_iterator node;
3832 for ( node = m_children.GetFirst(); node ; node = node->GetNext() )
3833 {
3834 wxWindow *compositeChild = node->GetData();
3835 if (compositeChild->GetBackgroundStyle() == wxBG_STYLE_TRANSPARENT)
3836 {
3837 if (cr == NULL)
3838 {
3839 cr = gdk_cairo_create(m_wxwindow->window);
3840 gdk_cairo_region(cr, m_nativeUpdateRegion.GetRegion());
3841 cairo_clip(cr);
3842 }
3843
3844 GtkWidget *child = compositeChild->m_wxwindow;
3845 GtkAllocation alloc;
3846 gtk_widget_get_allocation(child, &alloc);
3847
3848 // The source data is the (composited) child
3849 gdk_cairo_set_source_window(
3850 cr, gtk_widget_get_window(child), alloc.x, alloc.y);
3851
3852 cairo_paint(cr);
3853 }
3854 }
3855 if (cr)
3856 cairo_destroy(cr);
3857 }
3858 #endif // wxGTK_HAS_COMPOSITING_SUPPORT
3859
3860 m_clipPaintRegion = false;
3861
3862 m_updateRegion.Clear();
3863 m_nativeUpdateRegion.Clear();
3864 }
3865
3866 void wxWindowGTK::SetDoubleBuffered( bool on )
3867 {
3868 wxCHECK_RET( (m_widget != NULL), wxT("invalid window") );
3869
3870 if ( m_wxwindow )
3871 gtk_widget_set_double_buffered( m_wxwindow, on );
3872 }
3873
3874 bool wxWindowGTK::IsDoubleBuffered() const
3875 {
3876 return gtk_widget_get_double_buffered( m_wxwindow );
3877 }
3878
3879 void wxWindowGTK::ClearBackground()
3880 {
3881 wxCHECK_RET( m_widget != NULL, wxT("invalid window") );
3882 }
3883
3884 #if wxUSE_TOOLTIPS
3885 void wxWindowGTK::DoSetToolTip( wxToolTip *tip )
3886 {
3887 if (m_tooltip != tip)
3888 {
3889 wxWindowBase::DoSetToolTip(tip);
3890
3891 if (m_tooltip)
3892 m_tooltip->GTKSetWindow(static_cast<wxWindow*>(this));
3893 else
3894 GTKApplyToolTip(NULL);
3895 }
3896 }
3897
3898 void wxWindowGTK::GTKApplyToolTip(const char* tip)
3899 {
3900 wxToolTip::GTKApply(GetConnectWidget(), tip);
3901 }
3902 #endif // wxUSE_TOOLTIPS
3903
3904 bool wxWindowGTK::SetBackgroundColour( const wxColour &colour )
3905 {
3906 wxCHECK_MSG( m_widget != NULL, false, wxT("invalid window") );
3907
3908 if (!wxWindowBase::SetBackgroundColour(colour))
3909 return false;
3910
3911 if (colour.IsOk())
3912 {
3913 // We need the pixel value e.g. for background clearing.
3914 m_backgroundColour.CalcPixel(gtk_widget_get_colormap(m_widget));
3915 }
3916
3917 // apply style change (forceStyle=true so that new style is applied
3918 // even if the bg colour changed from valid to wxNullColour)
3919 GTKApplyWidgetStyle(true);
3920
3921 return true;
3922 }
3923
3924 bool wxWindowGTK::SetForegroundColour( const wxColour &colour )
3925 {
3926 wxCHECK_MSG( m_widget != NULL, false, wxT("invalid window") );
3927
3928 if (!wxWindowBase::SetForegroundColour(colour))
3929 {
3930 return false;
3931 }
3932
3933 if (colour.IsOk())
3934 {
3935 // We need the pixel value e.g. for background clearing.
3936 m_foregroundColour.CalcPixel(gtk_widget_get_colormap(m_widget));
3937 }
3938
3939 // apply style change (forceStyle=true so that new style is applied
3940 // even if the bg colour changed from valid to wxNullColour):
3941 GTKApplyWidgetStyle(true);
3942
3943 return true;
3944 }
3945
3946 PangoContext *wxWindowGTK::GTKGetPangoDefaultContext()
3947 {
3948 return gtk_widget_get_pango_context( m_widget );
3949 }
3950
3951 GtkRcStyle *wxWindowGTK::GTKCreateWidgetStyle(bool forceStyle)
3952 {
3953 // do we need to apply any changes at all?
3954 if ( !forceStyle &&
3955 !m_font.IsOk() &&
3956 !m_foregroundColour.IsOk() && !m_backgroundColour.IsOk() )
3957 {
3958 return NULL;
3959 }
3960
3961 GtkRcStyle *style = gtk_rc_style_new();
3962
3963 if ( m_font.IsOk() )
3964 {
3965 style->font_desc =
3966 pango_font_description_copy( m_font.GetNativeFontInfo()->description );
3967 }
3968
3969 int flagsNormal = 0,
3970 flagsPrelight = 0,
3971 flagsActive = 0,
3972 flagsInsensitive = 0;
3973
3974 if ( m_foregroundColour.IsOk() )
3975 {
3976 const GdkColor *fg = m_foregroundColour.GetColor();
3977
3978 style->fg[GTK_STATE_NORMAL] =
3979 style->text[GTK_STATE_NORMAL] = *fg;
3980 flagsNormal |= GTK_RC_FG | GTK_RC_TEXT;
3981
3982 style->fg[GTK_STATE_PRELIGHT] =
3983 style->text[GTK_STATE_PRELIGHT] = *fg;
3984 flagsPrelight |= GTK_RC_FG | GTK_RC_TEXT;
3985
3986 style->fg[GTK_STATE_ACTIVE] =
3987 style->text[GTK_STATE_ACTIVE] = *fg;
3988 flagsActive |= GTK_RC_FG | GTK_RC_TEXT;
3989 }
3990
3991 if ( m_backgroundColour.IsOk() )
3992 {
3993 const GdkColor *bg = m_backgroundColour.GetColor();
3994
3995 style->bg[GTK_STATE_NORMAL] =
3996 style->base[GTK_STATE_NORMAL] = *bg;
3997 flagsNormal |= GTK_RC_BG | GTK_RC_BASE;
3998
3999 style->bg[GTK_STATE_PRELIGHT] =
4000 style->base[GTK_STATE_PRELIGHT] = *bg;
4001 flagsPrelight |= GTK_RC_BG | GTK_RC_BASE;
4002
4003 style->bg[GTK_STATE_ACTIVE] =
4004 style->base[GTK_STATE_ACTIVE] = *bg;
4005 flagsActive |= GTK_RC_BG | GTK_RC_BASE;
4006
4007 style->bg[GTK_STATE_INSENSITIVE] =
4008 style->base[GTK_STATE_INSENSITIVE] = *bg;
4009 flagsInsensitive |= GTK_RC_BG | GTK_RC_BASE;
4010 }
4011
4012 style->color_flags[GTK_STATE_NORMAL] = (GtkRcFlags)flagsNormal;
4013 style->color_flags[GTK_STATE_PRELIGHT] = (GtkRcFlags)flagsPrelight;
4014 style->color_flags[GTK_STATE_ACTIVE] = (GtkRcFlags)flagsActive;
4015 style->color_flags[GTK_STATE_INSENSITIVE] = (GtkRcFlags)flagsInsensitive;
4016
4017 return style;
4018 }
4019
4020 void wxWindowGTK::GTKApplyWidgetStyle(bool forceStyle)
4021 {
4022 GtkRcStyle *style = GTKCreateWidgetStyle(forceStyle);
4023 if ( style )
4024 {
4025 DoApplyWidgetStyle(style);
4026 g_object_unref(style);
4027 }
4028
4029 // Style change may affect GTK+'s size calculation:
4030 InvalidateBestSize();
4031 }
4032
4033 void wxWindowGTK::DoApplyWidgetStyle(GtkRcStyle *style)
4034 {
4035 if ( m_wxwindow )
4036 {
4037 // block the signal temporarily to avoid sending
4038 // wxSysColourChangedEvents when we change the colours ourselves
4039 bool unblock = false;
4040 if ( IsTopLevel() )
4041 {
4042 unblock = true;
4043 g_signal_handlers_block_by_func(
4044 m_wxwindow, (void *)gtk_window_style_set_callback, this);
4045 }
4046
4047 gtk_widget_modify_style(m_wxwindow, style);
4048
4049 if ( unblock )
4050 {
4051 g_signal_handlers_unblock_by_func(
4052 m_wxwindow, (void *)gtk_window_style_set_callback, this);
4053 }
4054 }
4055 else
4056 {
4057 gtk_widget_modify_style(m_widget, style);
4058 }
4059 }
4060
4061 bool wxWindowGTK::SetBackgroundStyle(wxBackgroundStyle style)
4062 {
4063 if (!wxWindowBase::SetBackgroundStyle(style))
4064 return false;
4065
4066 GdkWindow *window;
4067 if ( m_wxwindow )
4068 {
4069 window = GTKGetDrawingWindow();
4070 }
4071 else
4072 {
4073 GtkWidget * const w = GetConnectWidget();
4074 window = w ? gtk_widget_get_window(w) : NULL;
4075 }
4076
4077 bool wantNoBackPixmap = style == wxBG_STYLE_PAINT || style == wxBG_STYLE_TRANSPARENT;
4078
4079 if ( wantNoBackPixmap )
4080 {
4081 if (window)
4082 {
4083 // Make sure GDK/X11 doesn't refresh the window
4084 // automatically.
4085 gdk_window_set_back_pixmap( window, NULL, FALSE );
4086 m_needsStyleChange = false;
4087 }
4088 else // window not realized yet
4089 {
4090 // Do when window is realized
4091 m_needsStyleChange = true;
4092 }
4093
4094 // Don't apply widget style, or we get a grey background
4095 }
4096 else
4097 {
4098 // apply style change (forceStyle=true so that new style is applied
4099 // even if the bg colour changed from valid to wxNullColour):
4100 GTKApplyWidgetStyle(true);
4101 }
4102
4103 return true;
4104 }
4105
4106 bool wxWindowGTK::IsTransparentBackgroundSupported(wxString* reason) const
4107 {
4108 #if wxGTK_HAS_COMPOSITING_SUPPORT
4109 if (gtk_check_version(wxGTK_VERSION_REQUIRED_FOR_COMPOSITING) != NULL)
4110 {
4111 if (reason)
4112 {
4113 *reason = _("GTK+ installed on this machine is too old to "
4114 "support screen compositing, please install "
4115 "GTK+ 2.12 or later.");
4116 }
4117
4118 return false;
4119 }
4120
4121 // NB: We don't check here if the particular kind of widget supports
4122 // transparency, we check only if it would be possible for a generic window
4123
4124 wxCHECK_MSG ( m_widget, false, "Window must be created first" );
4125
4126 if (!gdk_screen_is_composited(gtk_widget_get_screen(m_widget)))
4127 {
4128 if (reason)
4129 {
4130 *reason = _("Compositing not supported by this system, "
4131 "please enable it in your Window Manager.");
4132 }
4133
4134 return false;
4135 }
4136
4137 return true;
4138 #else
4139 if (reason)
4140 {
4141 *reason = _("This program was compiled with a too old version of GTK+, "
4142 "please rebuild with GTK+ 2.12 or newer.");
4143 }
4144 #endif // wxGTK_HAS_COMPOSITING_SUPPORT/!wxGTK_HAS_COMPOSITING_SUPPORT
4145
4146 return false;
4147 }
4148
4149 // ----------------------------------------------------------------------------
4150 // Pop-up menu stuff
4151 // ----------------------------------------------------------------------------
4152
4153 #if wxUSE_MENUS_NATIVE
4154
4155 extern "C" {
4156 static
4157 void wxPopupMenuPositionCallback( GtkMenu *menu,
4158 gint *x, gint *y,
4159 gboolean * WXUNUSED(whatever),
4160 gpointer user_data )
4161 {
4162 // ensure that the menu appears entirely on screen
4163 GtkRequisition req;
4164 gtk_widget_get_child_requisition(GTK_WIDGET(menu), &req);
4165
4166 wxSize sizeScreen = wxGetDisplaySize();
4167 wxPoint *pos = (wxPoint*)user_data;
4168
4169 gint xmax = sizeScreen.x - req.width,
4170 ymax = sizeScreen.y - req.height;
4171
4172 *x = pos->x < xmax ? pos->x : xmax;
4173 *y = pos->y < ymax ? pos->y : ymax;
4174 }
4175 }
4176
4177 bool wxWindowGTK::DoPopupMenu( wxMenu *menu, int x, int y )
4178 {
4179 wxCHECK_MSG( m_widget != NULL, false, wxT("invalid window") );
4180
4181 // For compatibility with other ports, pretend that the window showing the
4182 // menu has focus while the menu is shown. This is needed because the popup
4183 // menu actually steals the focus from the window it's associated it in
4184 // wxGTK unlike, say, wxMSW.
4185 wxWindowGTK* const oldPendingFocus = gs_pendingFocus;
4186 gs_pendingFocus = this;
4187 wxON_BLOCK_EXIT_SET( gs_pendingFocus, oldPendingFocus );
4188
4189 menu->UpdateUI();
4190
4191 wxPoint pos;
4192 gpointer userdata;
4193 GtkMenuPositionFunc posfunc;
4194 if ( x == -1 && y == -1 )
4195 {
4196 // use GTK's default positioning algorithm
4197 userdata = NULL;
4198 posfunc = NULL;
4199 }
4200 else
4201 {
4202 pos = ClientToScreen(wxPoint(x, y));
4203 userdata = &pos;
4204 posfunc = wxPopupMenuPositionCallback;
4205 }
4206
4207 menu->m_popupShown = true;
4208 gtk_menu_popup(
4209 GTK_MENU(menu->m_menu),
4210 NULL, // parent menu shell
4211 NULL, // parent menu item
4212 posfunc, // function to position it
4213 userdata, // client data
4214 0, // button used to activate it
4215 gtk_get_current_event_time()
4216 );
4217
4218 while (menu->m_popupShown)
4219 {
4220 gtk_main_iteration();
4221 }
4222
4223 return true;
4224 }
4225
4226 #endif // wxUSE_MENUS_NATIVE
4227
4228 #if wxUSE_DRAG_AND_DROP
4229
4230 void wxWindowGTK::SetDropTarget( wxDropTarget *dropTarget )
4231 {
4232 wxCHECK_RET( m_widget != NULL, wxT("invalid window") );
4233
4234 GtkWidget *dnd_widget = GetConnectWidget();
4235
4236 if (m_dropTarget) m_dropTarget->GtkUnregisterWidget( dnd_widget );
4237
4238 if (m_dropTarget) delete m_dropTarget;
4239 m_dropTarget = dropTarget;
4240
4241 if (m_dropTarget) m_dropTarget->GtkRegisterWidget( dnd_widget );
4242 }
4243
4244 #endif // wxUSE_DRAG_AND_DROP
4245
4246 GtkWidget* wxWindowGTK::GetConnectWidget()
4247 {
4248 GtkWidget *connect_widget = m_widget;
4249 if (m_wxwindow) connect_widget = m_wxwindow;
4250
4251 return connect_widget;
4252 }
4253
4254 bool wxWindowGTK::GTKIsOwnWindow(GdkWindow *window) const
4255 {
4256 wxArrayGdkWindows windowsThis;
4257 GdkWindow * const winThis = GTKGetWindow(windowsThis);
4258
4259 return winThis ? window == winThis
4260 : windowsThis.Index(window) != wxNOT_FOUND;
4261 }
4262
4263 GdkWindow *wxWindowGTK::GTKGetWindow(wxArrayGdkWindows& WXUNUSED(windows)) const
4264 {
4265 return m_wxwindow ? GTKGetDrawingWindow() : gtk_widget_get_window(m_widget);
4266 }
4267
4268 bool wxWindowGTK::SetFont( const wxFont &font )
4269 {
4270 wxCHECK_MSG( m_widget != NULL, false, wxT("invalid window") );
4271
4272 if (!wxWindowBase::SetFont(font))
4273 return false;
4274
4275 // apply style change (forceStyle=true so that new style is applied
4276 // even if the font changed from valid to wxNullFont):
4277 GTKApplyWidgetStyle(true);
4278
4279 return true;
4280 }
4281
4282 void wxWindowGTK::DoCaptureMouse()
4283 {
4284 wxCHECK_RET( m_widget != NULL, wxT("invalid window") );
4285
4286 GdkWindow *window = NULL;
4287 if (m_wxwindow)
4288 window = GTKGetDrawingWindow();
4289 else
4290 window = gtk_widget_get_window(GetConnectWidget());
4291
4292 wxCHECK_RET( window, wxT("CaptureMouse() failed") );
4293
4294 const wxCursor* cursor = &m_cursor;
4295 if (!cursor->IsOk())
4296 cursor = wxSTANDARD_CURSOR;
4297
4298 gdk_pointer_grab( window, FALSE,
4299 (GdkEventMask)
4300 (GDK_BUTTON_PRESS_MASK |
4301 GDK_BUTTON_RELEASE_MASK |
4302 GDK_POINTER_MOTION_HINT_MASK |
4303 GDK_POINTER_MOTION_MASK),
4304 NULL,
4305 cursor->GetCursor(),
4306 (guint32)GDK_CURRENT_TIME );
4307 g_captureWindow = this;
4308 g_captureWindowHasMouse = true;
4309 }
4310
4311 void wxWindowGTK::DoReleaseMouse()
4312 {
4313 wxCHECK_RET( m_widget != NULL, wxT("invalid window") );
4314
4315 wxCHECK_RET( g_captureWindow, wxT("can't release mouse - not captured") );
4316
4317 g_captureWindow = NULL;
4318
4319 GdkWindow *window = NULL;
4320 if (m_wxwindow)
4321 window = GTKGetDrawingWindow();
4322 else
4323 window = gtk_widget_get_window(GetConnectWidget());
4324
4325 if (!window)
4326 return;
4327
4328 gdk_pointer_ungrab ( (guint32)GDK_CURRENT_TIME );
4329 }
4330
4331 void wxWindowGTK::GTKReleaseMouseAndNotify()
4332 {
4333 DoReleaseMouse();
4334 wxMouseCaptureLostEvent evt(GetId());
4335 evt.SetEventObject( this );
4336 HandleWindowEvent( evt );
4337 }
4338
4339 /* static */
4340 wxWindow *wxWindowBase::GetCapture()
4341 {
4342 return (wxWindow *)g_captureWindow;
4343 }
4344
4345 bool wxWindowGTK::IsRetained() const
4346 {
4347 return false;
4348 }
4349
4350 void wxWindowGTK::SetScrollbar(int orient,
4351 int pos,
4352 int thumbVisible,
4353 int range,
4354 bool WXUNUSED(update))
4355 {
4356 const int dir = ScrollDirFromOrient(orient);
4357 GtkRange* const sb = m_scrollBar[dir];
4358 wxCHECK_RET( sb, wxT("this window is not scrollable") );
4359
4360 if (range <= 0)
4361 {
4362 // GtkRange requires upper > lower
4363 range =
4364 thumbVisible = 1;
4365 }
4366
4367 g_signal_handlers_block_by_func(
4368 sb, (void*)gtk_scrollbar_value_changed, this);
4369
4370 gtk_range_set_increments(sb, 1, thumbVisible);
4371 gtk_adjustment_set_page_size(gtk_range_get_adjustment(sb), thumbVisible);
4372 gtk_range_set_range(sb, 0, range);
4373 gtk_range_set_value(sb, pos);
4374 m_scrollPos[dir] = gtk_range_get_value(sb);
4375
4376 g_signal_handlers_unblock_by_func(
4377 sb, (void*)gtk_scrollbar_value_changed, this);
4378 }
4379
4380 void wxWindowGTK::SetScrollPos(int orient, int pos, bool WXUNUSED(refresh))
4381 {
4382 const int dir = ScrollDirFromOrient(orient);
4383 GtkRange * const sb = m_scrollBar[dir];
4384 wxCHECK_RET( sb, wxT("this window is not scrollable") );
4385
4386 // This check is more than an optimization. Without it, the slider
4387 // will not move smoothly while tracking when using wxScrollHelper.
4388 if (GetScrollPos(orient) != pos)
4389 {
4390 g_signal_handlers_block_by_func(
4391 sb, (void*)gtk_scrollbar_value_changed, this);
4392
4393 gtk_range_set_value(sb, pos);
4394 m_scrollPos[dir] = gtk_range_get_value(sb);
4395
4396 g_signal_handlers_unblock_by_func(
4397 sb, (void*)gtk_scrollbar_value_changed, this);
4398 }
4399 }
4400
4401 int wxWindowGTK::GetScrollThumb(int orient) const
4402 {
4403 GtkRange * const sb = m_scrollBar[ScrollDirFromOrient(orient)];
4404 wxCHECK_MSG( sb, 0, wxT("this window is not scrollable") );
4405
4406 return wxRound(gtk_adjustment_get_page_size(gtk_range_get_adjustment(sb)));
4407 }
4408
4409 int wxWindowGTK::GetScrollPos( int orient ) const
4410 {
4411 GtkRange * const sb = m_scrollBar[ScrollDirFromOrient(orient)];
4412 wxCHECK_MSG( sb, 0, wxT("this window is not scrollable") );
4413
4414 return wxRound(gtk_range_get_value(sb));
4415 }
4416
4417 int wxWindowGTK::GetScrollRange( int orient ) const
4418 {
4419 GtkRange * const sb = m_scrollBar[ScrollDirFromOrient(orient)];
4420 wxCHECK_MSG( sb, 0, wxT("this window is not scrollable") );
4421
4422 return wxRound(gtk_adjustment_get_upper(gtk_range_get_adjustment(sb)));
4423 }
4424
4425 // Determine if increment is the same as +/-x, allowing for some small
4426 // difference due to possible inexactness in floating point arithmetic
4427 static inline bool IsScrollIncrement(double increment, double x)
4428 {
4429 wxASSERT(increment > 0);
4430 const double tolerance = 1.0 / 1024;
4431 return fabs(increment - fabs(x)) < tolerance;
4432 }
4433
4434 wxEventType wxWindowGTK::GTKGetScrollEventType(GtkRange* range)
4435 {
4436 wxASSERT(range == m_scrollBar[0] || range == m_scrollBar[1]);
4437
4438 const int barIndex = range == m_scrollBar[1];
4439
4440 const double value = gtk_range_get_value(range);
4441
4442 // save previous position
4443 const double oldPos = m_scrollPos[barIndex];
4444 // update current position
4445 m_scrollPos[barIndex] = value;
4446 // If event should be ignored, or integral position has not changed
4447 if (!m_hasVMT || g_blockEventsOnDrag || wxRound(value) == wxRound(oldPos))
4448 {
4449 return wxEVT_NULL;
4450 }
4451
4452 wxEventType eventType = wxEVT_SCROLL_THUMBTRACK;
4453 if (!m_isScrolling)
4454 {
4455 // Difference from last change event
4456 const double diff = value - oldPos;
4457 const bool isDown = diff > 0;
4458
4459 GtkAdjustment* adj = gtk_range_get_adjustment(range);
4460 if (IsScrollIncrement(gtk_adjustment_get_step_increment(adj), diff))
4461 {
4462 eventType = isDown ? wxEVT_SCROLL_LINEDOWN : wxEVT_SCROLL_LINEUP;
4463 }
4464 else if (IsScrollIncrement(gtk_adjustment_get_page_increment(adj), diff))
4465 {
4466 eventType = isDown ? wxEVT_SCROLL_PAGEDOWN : wxEVT_SCROLL_PAGEUP;
4467 }
4468 else if (m_mouseButtonDown)
4469 {
4470 // Assume track event
4471 m_isScrolling = true;
4472 }
4473 }
4474 return eventType;
4475 }
4476
4477 void wxWindowGTK::ScrollWindow( int dx, int dy, const wxRect* WXUNUSED(rect) )
4478 {
4479 wxCHECK_RET( m_widget != NULL, wxT("invalid window") );
4480
4481 wxCHECK_RET( m_wxwindow != NULL, wxT("window needs client area for scrolling") );
4482
4483 // No scrolling requested.
4484 if ((dx == 0) && (dy == 0)) return;
4485
4486 m_clipPaintRegion = true;
4487
4488 WX_PIZZA(m_wxwindow)->scroll(dx, dy);
4489
4490 m_clipPaintRegion = false;
4491
4492 #if wxUSE_CARET
4493 bool restoreCaret = (GetCaret() != NULL && GetCaret()->IsVisible());
4494 if (restoreCaret)
4495 {
4496 wxRect caretRect(GetCaret()->GetPosition(), GetCaret()->GetSize());
4497 if (dx > 0)
4498 caretRect.width += dx;
4499 else
4500 {
4501 caretRect.x += dx; caretRect.width -= dx;
4502 }
4503 if (dy > 0)
4504 caretRect.height += dy;
4505 else
4506 {
4507 caretRect.y += dy; caretRect.height -= dy;
4508 }
4509
4510 RefreshRect(caretRect);
4511 }
4512 #endif // wxUSE_CARET
4513 }
4514
4515 void wxWindowGTK::GTKScrolledWindowSetBorder(GtkWidget* w, int wxstyle)
4516 {
4517 //RN: Note that static controls usually have no border on gtk, so maybe
4518 //it makes sense to treat that as simply no border at the wx level
4519 //as well...
4520 if (!(wxstyle & wxNO_BORDER) && !(wxstyle & wxBORDER_STATIC))
4521 {
4522 GtkShadowType gtkstyle;
4523
4524 if(wxstyle & wxBORDER_RAISED)
4525 gtkstyle = GTK_SHADOW_OUT;
4526 else if ((wxstyle & wxBORDER_SUNKEN) || (wxstyle & wxBORDER_THEME))
4527 gtkstyle = GTK_SHADOW_IN;
4528 #if 0
4529 // Now obsolete
4530 else if (wxstyle & wxBORDER_DOUBLE)
4531 gtkstyle = GTK_SHADOW_ETCHED_IN;
4532 #endif
4533 else //default
4534 gtkstyle = GTK_SHADOW_IN;
4535
4536 gtk_scrolled_window_set_shadow_type( GTK_SCROLLED_WINDOW(w),
4537 gtkstyle );
4538 }
4539 }
4540
4541 // Find the wxWindow at the current mouse position, also returning the mouse
4542 // position.
4543 wxWindow* wxFindWindowAtPointer(wxPoint& pt)
4544 {
4545 pt = wxGetMousePosition();
4546 wxWindow* found = wxFindWindowAtPoint(pt);
4547 return found;
4548 }
4549
4550 // Get the current mouse position.
4551 wxPoint wxGetMousePosition()
4552 {
4553 wxWindow* tlw = NULL;
4554 if (!wxTopLevelWindows.empty())
4555 tlw = wxTopLevelWindows.front();
4556 GdkDisplay* display;
4557 if (tlw && tlw->m_widget)
4558 display = gtk_widget_get_display(tlw->m_widget);
4559 else
4560 display = gdk_display_get_default();
4561
4562 int x, y;
4563 gdk_display_get_pointer(display, NULL, &x, &y, NULL);
4564 return wxPoint(x, y);
4565 }
4566
4567 GdkWindow* wxWindowGTK::GTKGetDrawingWindow() const
4568 {
4569 GdkWindow* window = NULL;
4570 if (m_wxwindow)
4571 window = gtk_widget_get_window(m_wxwindow);
4572 return window;
4573 }
4574
4575 // ----------------------------------------------------------------------------
4576 // freeze/thaw
4577 // ----------------------------------------------------------------------------
4578
4579 extern "C"
4580 {
4581
4582 // this is called if we attempted to freeze unrealized widget when it finally
4583 // is realized (and so can be frozen):
4584 static void wx_frozen_widget_realize(GtkWidget* w, wxWindowGTK* win)
4585 {
4586 wxASSERT( w && gtk_widget_get_has_window(w) );
4587 wxASSERT( gtk_widget_get_realized(w) );
4588
4589 g_signal_handlers_disconnect_by_func
4590 (
4591 w,
4592 (void*)wx_frozen_widget_realize,
4593 win
4594 );
4595
4596 GdkWindow* window;
4597 if (w == win->m_wxwindow)
4598 window = win->GTKGetDrawingWindow();
4599 else
4600 window = gtk_widget_get_window(w);
4601 gdk_window_freeze_updates(window);
4602 }
4603
4604 } // extern "C"
4605
4606 void wxWindowGTK::GTKFreezeWidget(GtkWidget *w)
4607 {
4608 if ( !w || !gtk_widget_get_has_window(w) )
4609 return; // window-less widget, cannot be frozen
4610
4611 GdkWindow* window = gtk_widget_get_window(w);
4612 if (window == NULL)
4613 {
4614 // we can't thaw unrealized widgets because they don't have GdkWindow,
4615 // so set it up to be done immediately after realization:
4616 g_signal_connect_after
4617 (
4618 w,
4619 "realize",
4620 G_CALLBACK(wx_frozen_widget_realize),
4621 this
4622 );
4623 return;
4624 }
4625
4626 if (w == m_wxwindow)
4627 window = GTKGetDrawingWindow();
4628 gdk_window_freeze_updates(window);
4629 }
4630
4631 void wxWindowGTK::GTKThawWidget(GtkWidget *w)
4632 {
4633 if ( !w || !gtk_widget_get_has_window(w) )
4634 return; // window-less widget, cannot be frozen
4635
4636 GdkWindow* window = gtk_widget_get_window(w);
4637 if (window == NULL)
4638 {
4639 // the widget wasn't realized yet, no need to thaw
4640 g_signal_handlers_disconnect_by_func
4641 (
4642 w,
4643 (void*)wx_frozen_widget_realize,
4644 this
4645 );
4646 return;
4647 }
4648
4649 if (w == m_wxwindow)
4650 window = GTKGetDrawingWindow();
4651 gdk_window_thaw_updates(window);
4652 }
4653
4654 void wxWindowGTK::DoFreeze()
4655 {
4656 GTKFreezeWidget(m_widget);
4657 if ( m_wxwindow && m_widget != m_wxwindow )
4658 GTKFreezeWidget(m_wxwindow);
4659 }
4660
4661 void wxWindowGTK::DoThaw()
4662 {
4663 GTKThawWidget(m_widget);
4664 if ( m_wxwindow && m_widget != m_wxwindow )
4665 GTKThawWidget(m_wxwindow);
4666 }
wxWidgets (Impactor)