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rearrange some code in DoSetSize to facilitate upcoming changes
[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 gtk_widget_set_size_request(m_widget, width, height);
2570
2571 // inform the parent to perform the move
2572 wxASSERT_MSG(m_parent && m_parent->m_wxwindow,
2573 "the parent window has no client area?");
2574 WX_PIZZA(m_parent->m_wxwindow)->move(m_widget, x, y);
2575 }
2576
2577 void wxWindowGTK::ConstrainSize()
2578 {
2579 #ifdef __WXGPE__
2580 // GPE's window manager doesn't like size hints at all, esp. when the user
2581 // has to use the virtual keyboard, so don't constrain size there
2582 if (!IsTopLevel())
2583 #endif
2584 {
2585 const wxSize minSize = GetMinSize();
2586 const wxSize maxSize = GetMaxSize();
2587 if (minSize.x > 0 && m_width < minSize.x) m_width = minSize.x;
2588 if (minSize.y > 0 && m_height < minSize.y) m_height = minSize.y;
2589 if (maxSize.x > 0 && m_width > maxSize.x) m_width = maxSize.x;
2590 if (maxSize.y > 0 && m_height > maxSize.y) m_height = maxSize.y;
2591 }
2592 }
2593
2594 void wxWindowGTK::DoSetSize( int x, int y, int width, int height, int sizeFlags )
2595 {
2596 wxASSERT_MSG( (m_widget != NULL), wxT("invalid window") );
2597 wxASSERT_MSG( (m_parent != NULL), wxT("wxWindowGTK::SetSize requires parent.\n") );
2598
2599 int scrollX = 0, scrollY = 0;
2600 GtkWidget* parent = gtk_widget_get_parent(m_widget);
2601 if (WX_IS_PIZZA(parent))
2602 {
2603 wxPizza* pizza = WX_PIZZA(parent);
2604 scrollX = pizza->m_scroll_x;
2605 scrollY = pizza->m_scroll_y;
2606 }
2607 if (x != -1 || (sizeFlags & wxSIZE_ALLOW_MINUS_ONE))
2608 x += scrollX;
2609 else
2610 x = m_x;
2611 if (y != -1 || (sizeFlags & wxSIZE_ALLOW_MINUS_ONE))
2612 y += scrollY;
2613 else
2614 y = m_y;
2615
2616 // calculate the best size if we should auto size the window
2617 if ( ((sizeFlags & wxSIZE_AUTO_WIDTH) && width == -1) ||
2618 ((sizeFlags & wxSIZE_AUTO_HEIGHT) && height == -1) )
2619 {
2620 const wxSize sizeBest = GetBestSize();
2621 if ( (sizeFlags & wxSIZE_AUTO_WIDTH) && width == -1 )
2622 width = sizeBest.x;
2623 if ( (sizeFlags & wxSIZE_AUTO_HEIGHT) && height == -1 )
2624 height = sizeBest.y;
2625 }
2626
2627 if (width == -1)
2628 width = m_width;
2629 if (height == -1)
2630 height = m_height;
2631
2632 const bool sizeChange = m_width != width || m_height != height;
2633 if (sizeChange || m_x != x || m_y != y)
2634 {
2635 m_x = x;
2636 m_y = y;
2637 m_width = width;
2638 m_height = height;
2639 }
2640
2641 if (m_parent->m_wxwindow)
2642 {
2643 int left_border = 0;
2644 int right_border = 0;
2645 int top_border = 0;
2646 int bottom_border = 0;
2647
2648 /* the default button has a border around it */
2649 if (gtk_widget_get_can_default(m_widget))
2650 {
2651 GtkBorder *default_border = NULL;
2652 gtk_widget_style_get( m_widget, "default_border", &default_border, NULL );
2653 if (default_border)
2654 {
2655 left_border += default_border->left;
2656 right_border += default_border->right;
2657 top_border += default_border->top;
2658 bottom_border += default_border->bottom;
2659 gtk_border_free( default_border );
2660 }
2661 }
2662
2663 DoMoveWindow( m_x - left_border,
2664 m_y - top_border,
2665 m_width+left_border+right_border,
2666 m_height+top_border+bottom_border );
2667 }
2668
2669 if (sizeChange)
2670 {
2671 // update these variables to keep size_allocate handler
2672 // from sending another size event for this change
2673 GetClientSize( &m_oldClientWidth, &m_oldClientHeight );
2674
2675 gtk_widget_queue_resize(m_widget);
2676 }
2677 if ((sizeChange && !m_nativeSizeEvent) || (sizeFlags & wxSIZE_FORCE_EVENT))
2678 {
2679 wxSizeEvent event( wxSize(m_width,m_height), GetId() );
2680 event.SetEventObject( this );
2681 HandleWindowEvent( event );
2682 }
2683 }
2684
2685 bool wxWindowGTK::GTKShowFromOnIdle()
2686 {
2687 if (IsShown() && m_showOnIdle && !gtk_widget_get_visible (m_widget))
2688 {
2689 GtkAllocation alloc;
2690 alloc.x = m_x;
2691 alloc.y = m_y;
2692 alloc.width = m_width;
2693 alloc.height = m_height;
2694 gtk_widget_size_allocate( m_widget, &alloc );
2695 gtk_widget_show( m_widget );
2696 wxShowEvent eventShow(GetId(), true);
2697 eventShow.SetEventObject(this);
2698 HandleWindowEvent(eventShow);
2699 m_showOnIdle = false;
2700 return true;
2701 }
2702
2703 return false;
2704 }
2705
2706 void wxWindowGTK::OnInternalIdle()
2707 {
2708 if ( gs_deferredFocusOut )
2709 GTKHandleDeferredFocusOut();
2710
2711 // Check if we have to show window now
2712 if (GTKShowFromOnIdle()) return;
2713
2714 if ( m_dirtyTabOrder )
2715 {
2716 m_dirtyTabOrder = false;
2717 RealizeTabOrder();
2718 }
2719
2720 wxWindowBase::OnInternalIdle();
2721 }
2722
2723 void wxWindowGTK::DoGetSize( int *width, int *height ) const
2724 {
2725 if (width) (*width) = m_width;
2726 if (height) (*height) = m_height;
2727 }
2728
2729 void wxWindowGTK::DoSetClientSize( int width, int height )
2730 {
2731 wxCHECK_RET( (m_widget != NULL), wxT("invalid window") );
2732
2733 const wxSize size = GetSize();
2734 const wxSize clientSize = GetClientSize();
2735 SetSize(width + (size.x - clientSize.x), height + (size.y - clientSize.y));
2736 }
2737
2738 void wxWindowGTK::DoGetClientSize( int *width, int *height ) const
2739 {
2740 wxCHECK_RET( (m_widget != NULL), wxT("invalid window") );
2741
2742 int w = m_width;
2743 int h = m_height;
2744
2745 if ( m_wxwindow )
2746 {
2747 // if window is scrollable, account for scrollbars
2748 if ( GTK_IS_SCROLLED_WINDOW(m_widget) )
2749 {
2750 GtkPolicyType policy[ScrollDir_Max];
2751 gtk_scrolled_window_get_policy(GTK_SCROLLED_WINDOW(m_widget),
2752 &policy[ScrollDir_Horz],
2753 &policy[ScrollDir_Vert]);
2754
2755 for ( int i = 0; i < ScrollDir_Max; i++ )
2756 {
2757 // don't account for the scrollbars we don't have
2758 GtkRange * const range = m_scrollBar[i];
2759 if ( !range )
2760 continue;
2761
2762 // nor for the ones we have but don't current show
2763 switch ( policy[i] )
2764 {
2765 case GTK_POLICY_NEVER:
2766 // never shown so doesn't take any place
2767 continue;
2768
2769 case GTK_POLICY_ALWAYS:
2770 // no checks necessary
2771 break;
2772
2773 case GTK_POLICY_AUTOMATIC:
2774 // may be shown or not, check
2775 GtkAdjustment *adj = gtk_range_get_adjustment(range);
2776 if (gtk_adjustment_get_upper(adj) <= gtk_adjustment_get_page_size(adj))
2777 continue;
2778 }
2779
2780 GtkScrolledWindowClass *scroll_class =
2781 GTK_SCROLLED_WINDOW_CLASS( GTK_OBJECT_GET_CLASS(m_widget) );
2782
2783 GtkRequisition req;
2784 gtk_widget_size_request(GTK_WIDGET(range), &req);
2785 if (i == ScrollDir_Horz)
2786 h -= req.height + scroll_class->scrollbar_spacing;
2787 else
2788 w -= req.width + scroll_class->scrollbar_spacing;
2789 }
2790 }
2791
2792 const wxSize sizeBorders = DoGetBorderSize();
2793 w -= sizeBorders.x;
2794 h -= sizeBorders.y;
2795
2796 if (w < 0)
2797 w = 0;
2798 if (h < 0)
2799 h = 0;
2800 }
2801
2802 if (width) *width = w;
2803 if (height) *height = h;
2804 }
2805
2806 wxSize wxWindowGTK::DoGetBorderSize() const
2807 {
2808 if ( !m_wxwindow )
2809 return wxWindowBase::DoGetBorderSize();
2810
2811 int x, y;
2812 WX_PIZZA(m_wxwindow)->get_border_widths(x, y);
2813
2814 return 2*wxSize(x, y);
2815 }
2816
2817 void wxWindowGTK::DoGetPosition( int *x, int *y ) const
2818 {
2819 int dx = 0;
2820 int dy = 0;
2821 GtkWidget* parent = NULL;
2822 if (m_widget)
2823 parent = gtk_widget_get_parent(m_widget);
2824 if (WX_IS_PIZZA(parent))
2825 {
2826 wxPizza* pizza = WX_PIZZA(parent);
2827 dx = pizza->m_scroll_x;
2828 dy = pizza->m_scroll_y;
2829 }
2830 if (x) (*x) = m_x - dx;
2831 if (y) (*y) = m_y - dy;
2832 }
2833
2834 void wxWindowGTK::DoClientToScreen( int *x, int *y ) const
2835 {
2836 wxCHECK_RET( (m_widget != NULL), wxT("invalid window") );
2837
2838 if (gtk_widget_get_window(m_widget) == NULL) return;
2839
2840 GdkWindow *source = NULL;
2841 if (m_wxwindow)
2842 source = gtk_widget_get_window(m_wxwindow);
2843 else
2844 source = gtk_widget_get_window(m_widget);
2845
2846 int org_x = 0;
2847 int org_y = 0;
2848 gdk_window_get_origin( source, &org_x, &org_y );
2849
2850 if (!m_wxwindow)
2851 {
2852 if (!gtk_widget_get_has_window(m_widget))
2853 {
2854 GtkAllocation a;
2855 gtk_widget_get_allocation(m_widget, &a);
2856 org_x += a.x;
2857 org_y += a.y;
2858 }
2859 }
2860
2861
2862 if (x)
2863 {
2864 if (GetLayoutDirection() == wxLayout_RightToLeft)
2865 *x = (GetClientSize().x - *x) + org_x;
2866 else
2867 *x += org_x;
2868 }
2869
2870 if (y) *y += org_y;
2871 }
2872
2873 void wxWindowGTK::DoScreenToClient( int *x, int *y ) const
2874 {
2875 wxCHECK_RET( (m_widget != NULL), wxT("invalid window") );
2876
2877 if (!gtk_widget_get_realized(m_widget)) return;
2878
2879 GdkWindow *source = NULL;
2880 if (m_wxwindow)
2881 source = gtk_widget_get_window(m_wxwindow);
2882 else
2883 source = gtk_widget_get_window(m_widget);
2884
2885 int org_x = 0;
2886 int org_y = 0;
2887 gdk_window_get_origin( source, &org_x, &org_y );
2888
2889 if (!m_wxwindow)
2890 {
2891 if (!gtk_widget_get_has_window(m_widget))
2892 {
2893 GtkAllocation a;
2894 gtk_widget_get_allocation(m_widget, &a);
2895 org_x += a.x;
2896 org_y += a.y;
2897 }
2898 }
2899
2900 if (x)
2901 {
2902 if (GetLayoutDirection() == wxLayout_RightToLeft)
2903 *x = (GetClientSize().x - *x) - org_x;
2904 else
2905 *x -= org_x;
2906 }
2907 if (y) *y -= org_y;
2908 }
2909
2910 bool wxWindowGTK::Show( bool show )
2911 {
2912 if ( !wxWindowBase::Show(show) )
2913 {
2914 // nothing to do
2915 return false;
2916 }
2917
2918 // notice that we may call Hide() before the window is created and this is
2919 // actually useful to create it hidden initially -- but we can't call
2920 // Show() before it is created
2921 if ( !m_widget )
2922 {
2923 wxASSERT_MSG( !show, "can't show invalid window" );
2924 return true;
2925 }
2926
2927 if ( show )
2928 {
2929 if ( m_showOnIdle )
2930 {
2931 // defer until later
2932 return true;
2933 }
2934
2935 gtk_widget_show(m_widget);
2936 }
2937 else // hide
2938 {
2939 gtk_widget_hide(m_widget);
2940 }
2941
2942 wxShowEvent eventShow(GetId(), show);
2943 eventShow.SetEventObject(this);
2944 HandleWindowEvent(eventShow);
2945
2946 return true;
2947 }
2948
2949 void wxWindowGTK::DoEnable( bool enable )
2950 {
2951 wxCHECK_RET( (m_widget != NULL), wxT("invalid window") );
2952
2953 gtk_widget_set_sensitive( m_widget, enable );
2954 if (m_wxwindow && (m_wxwindow != m_widget))
2955 gtk_widget_set_sensitive( m_wxwindow, enable );
2956 }
2957
2958 int wxWindowGTK::GetCharHeight() const
2959 {
2960 wxCHECK_MSG( (m_widget != NULL), 12, wxT("invalid window") );
2961
2962 wxFont font = GetFont();
2963 wxCHECK_MSG( font.IsOk(), 12, wxT("invalid font") );
2964
2965 PangoContext* context = gtk_widget_get_pango_context(m_widget);
2966
2967 if (!context)
2968 return 0;
2969
2970 PangoFontDescription *desc = font.GetNativeFontInfo()->description;
2971 PangoLayout *layout = pango_layout_new(context);
2972 pango_layout_set_font_description(layout, desc);
2973 pango_layout_set_text(layout, "H", 1);
2974 PangoLayoutLine *line = (PangoLayoutLine *)pango_layout_get_lines(layout)->data;
2975
2976 PangoRectangle rect;
2977 pango_layout_line_get_extents(line, NULL, &rect);
2978
2979 g_object_unref (layout);
2980
2981 return (int) PANGO_PIXELS(rect.height);
2982 }
2983
2984 int wxWindowGTK::GetCharWidth() const
2985 {
2986 wxCHECK_MSG( (m_widget != NULL), 8, wxT("invalid window") );
2987
2988 wxFont font = GetFont();
2989 wxCHECK_MSG( font.IsOk(), 8, wxT("invalid font") );
2990
2991 PangoContext* context = gtk_widget_get_pango_context(m_widget);
2992
2993 if (!context)
2994 return 0;
2995
2996 PangoFontDescription *desc = font.GetNativeFontInfo()->description;
2997 PangoLayout *layout = pango_layout_new(context);
2998 pango_layout_set_font_description(layout, desc);
2999 pango_layout_set_text(layout, "g", 1);
3000 PangoLayoutLine *line = (PangoLayoutLine *)pango_layout_get_lines(layout)->data;
3001
3002 PangoRectangle rect;
3003 pango_layout_line_get_extents(line, NULL, &rect);
3004
3005 g_object_unref (layout);
3006
3007 return (int) PANGO_PIXELS(rect.width);
3008 }
3009
3010 void wxWindowGTK::DoGetTextExtent( const wxString& string,
3011 int *x,
3012 int *y,
3013 int *descent,
3014 int *externalLeading,
3015 const wxFont *theFont ) const
3016 {
3017 wxFont fontToUse = theFont ? *theFont : GetFont();
3018
3019 wxCHECK_RET( fontToUse.IsOk(), wxT("invalid font") );
3020
3021 if (string.empty())
3022 {
3023 if (x) (*x) = 0;
3024 if (y) (*y) = 0;
3025 return;
3026 }
3027
3028 PangoContext *context = NULL;
3029 if (m_widget)
3030 context = gtk_widget_get_pango_context( m_widget );
3031
3032 if (!context)
3033 {
3034 if (x) (*x) = 0;
3035 if (y) (*y) = 0;
3036 return;
3037 }
3038
3039 PangoFontDescription *desc = fontToUse.GetNativeFontInfo()->description;
3040 PangoLayout *layout = pango_layout_new(context);
3041 pango_layout_set_font_description(layout, desc);
3042 {
3043 const wxCharBuffer data = wxGTK_CONV( string );
3044 if ( data )
3045 pango_layout_set_text(layout, data, strlen(data));
3046 }
3047
3048 PangoRectangle rect;
3049 pango_layout_get_extents(layout, NULL, &rect);
3050
3051 if (x) (*x) = (wxCoord) PANGO_PIXELS(rect.width);
3052 if (y) (*y) = (wxCoord) PANGO_PIXELS(rect.height);
3053 if (descent)
3054 {
3055 PangoLayoutIter *iter = pango_layout_get_iter(layout);
3056 int baseline = pango_layout_iter_get_baseline(iter);
3057 pango_layout_iter_free(iter);
3058 *descent = *y - PANGO_PIXELS(baseline);
3059 }
3060 if (externalLeading) (*externalLeading) = 0; // ??
3061
3062 g_object_unref (layout);
3063 }
3064
3065 void wxWindowGTK::GTKDisableFocusOutEvent()
3066 {
3067 g_signal_handlers_block_by_func( m_focusWidget,
3068 (gpointer) gtk_window_focus_out_callback, this);
3069 }
3070
3071 void wxWindowGTK::GTKEnableFocusOutEvent()
3072 {
3073 g_signal_handlers_unblock_by_func( m_focusWidget,
3074 (gpointer) gtk_window_focus_out_callback, this);
3075 }
3076
3077 bool wxWindowGTK::GTKHandleFocusIn()
3078 {
3079 // Disable default focus handling for custom windows since the default GTK+
3080 // handler issues a repaint
3081 const bool retval = m_wxwindow ? true : false;
3082
3083
3084 // NB: if there's still unprocessed deferred focus-out event (see
3085 // GTKHandleFocusOut() for explanation), we need to process it first so
3086 // that the order of focus events -- focus-out first, then focus-in
3087 // elsewhere -- is preserved
3088 if ( gs_deferredFocusOut )
3089 {
3090 if ( GTKNeedsToFilterSameWindowFocus() &&
3091 gs_deferredFocusOut == this )
3092 {
3093 // GTK+ focus changed from this wxWindow back to itself, so don't
3094 // emit any events at all
3095 wxLogTrace(TRACE_FOCUS,
3096 "filtered out spurious focus change within %s(%p, %s)",
3097 GetClassInfo()->GetClassName(), this, GetLabel());
3098 gs_deferredFocusOut = NULL;
3099 return retval;
3100 }
3101
3102 // otherwise we need to send focus-out first
3103 wxASSERT_MSG ( gs_deferredFocusOut != this,
3104 "GTKHandleFocusIn(GTKFocus_Normal) called even though focus changed back to itself - derived class should handle this" );
3105 GTKHandleDeferredFocusOut();
3106 }
3107
3108
3109 wxLogTrace(TRACE_FOCUS,
3110 "handling focus_in event for %s(%p, %s)",
3111 GetClassInfo()->GetClassName(), this, GetLabel());
3112
3113 if (m_imData)
3114 gtk_im_context_focus_in(m_imData->context);
3115
3116 gs_currentFocus = this;
3117 gs_pendingFocus = NULL;
3118
3119 #if wxUSE_CARET
3120 // caret needs to be informed about focus change
3121 wxCaret *caret = GetCaret();
3122 if ( caret )
3123 {
3124 caret->OnSetFocus();
3125 }
3126 #endif // wxUSE_CARET
3127
3128 // Notify the parent keeping track of focus for the kbd navigation
3129 // purposes that we got it.
3130 wxChildFocusEvent eventChildFocus(static_cast<wxWindow*>(this));
3131 GTKProcessEvent(eventChildFocus);
3132
3133 wxFocusEvent eventFocus(wxEVT_SET_FOCUS, GetId());
3134 eventFocus.SetEventObject(this);
3135 GTKProcessEvent(eventFocus);
3136
3137 return retval;
3138 }
3139
3140 bool wxWindowGTK::GTKHandleFocusOut()
3141 {
3142 // Disable default focus handling for custom windows since the default GTK+
3143 // handler issues a repaint
3144 const bool retval = m_wxwindow ? true : false;
3145
3146
3147 // NB: If a control is composed of several GtkWidgets and when focus
3148 // changes from one of them to another within the same wxWindow, we get
3149 // a focus-out event followed by focus-in for another GtkWidget owned
3150 // by the same wx control. We don't want to generate two spurious
3151 // wxEVT_SET_FOCUS events in this case, so we defer sending wx events
3152 // from GTKHandleFocusOut() until we know for sure it's not coming back
3153 // (i.e. in GTKHandleFocusIn() or at idle time).
3154 if ( GTKNeedsToFilterSameWindowFocus() )
3155 {
3156 wxASSERT_MSG( gs_deferredFocusOut == NULL,
3157 "deferred focus out event already pending" );
3158 wxLogTrace(TRACE_FOCUS,
3159 "deferring focus_out event for %s(%p, %s)",
3160 GetClassInfo()->GetClassName(), this, GetLabel());
3161 gs_deferredFocusOut = this;
3162 return retval;
3163 }
3164
3165 GTKHandleFocusOutNoDeferring();
3166
3167 return retval;
3168 }
3169
3170 void wxWindowGTK::GTKHandleFocusOutNoDeferring()
3171 {
3172 wxLogTrace(TRACE_FOCUS,
3173 "handling focus_out event for %s(%p, %s)",
3174 GetClassInfo()->GetClassName(), this, GetLabel());
3175
3176 if (m_imData)
3177 gtk_im_context_focus_out(m_imData->context);
3178
3179 if ( gs_currentFocus != this )
3180 {
3181 // Something is terribly wrong, gs_currentFocus is out of sync with the
3182 // real focus. We will reset it to NULL anyway, because after this
3183 // focus-out event is handled, one of the following with happen:
3184 //
3185 // * either focus will go out of the app altogether, in which case
3186 // gs_currentFocus _should_ be NULL
3187 //
3188 // * or it goes to another control, in which case focus-in event will
3189 // follow immediately and it will set gs_currentFocus to the right
3190 // value
3191 wxLogDebug("window %s(%p, %s) lost focus even though it didn't have it",
3192 GetClassInfo()->GetClassName(), this, GetLabel());
3193 }
3194 gs_currentFocus = NULL;
3195
3196 #if wxUSE_CARET
3197 // caret needs to be informed about focus change
3198 wxCaret *caret = GetCaret();
3199 if ( caret )
3200 {
3201 caret->OnKillFocus();
3202 }
3203 #endif // wxUSE_CARET
3204
3205 wxFocusEvent event( wxEVT_KILL_FOCUS, GetId() );
3206 event.SetEventObject( this );
3207 event.SetWindow( FindFocus() );
3208 GTKProcessEvent( event );
3209 }
3210
3211 /*static*/
3212 void wxWindowGTK::GTKHandleDeferredFocusOut()
3213 {
3214 // NB: See GTKHandleFocusOut() for explanation. This function is called
3215 // from either GTKHandleFocusIn() or OnInternalIdle() to process
3216 // deferred event.
3217 if ( gs_deferredFocusOut )
3218 {
3219 wxWindowGTK *win = gs_deferredFocusOut;
3220 gs_deferredFocusOut = NULL;
3221
3222 wxLogTrace(TRACE_FOCUS,
3223 "processing deferred focus_out event for %s(%p, %s)",
3224 win->GetClassInfo()->GetClassName(), win, win->GetLabel());
3225
3226 win->GTKHandleFocusOutNoDeferring();
3227 }
3228 }
3229
3230 void wxWindowGTK::SetFocus()
3231 {
3232 wxCHECK_RET( m_widget != NULL, wxT("invalid window") );
3233
3234 // Setting "physical" focus is not immediate in GTK+ and while
3235 // gtk_widget_is_focus ("determines if the widget is the focus widget
3236 // within its toplevel", i.e. returns true for one widget per TLW, not
3237 // globally) returns true immediately after grabbing focus,
3238 // GTK_WIDGET_HAS_FOCUS (which returns true only for the one widget that
3239 // has focus at the moment) takes effect only after the window is shown
3240 // (if it was hidden at the moment of the call) or at the next event loop
3241 // iteration.
3242 //
3243 // Because we want to FindFocus() call immediately following
3244 // foo->SetFocus() to return foo, we have to keep track of "pending" focus
3245 // ourselves.
3246 gs_pendingFocus = this;
3247
3248 GtkWidget *widget = m_wxwindow ? m_wxwindow : m_focusWidget;
3249
3250 if ( GTK_IS_CONTAINER(widget) &&
3251 !gtk_widget_get_can_focus(widget) )
3252 {
3253 wxLogTrace(TRACE_FOCUS,
3254 wxT("Setting focus to a child of %s(%p, %s)"),
3255 GetClassInfo()->GetClassName(), this, GetLabel().c_str());
3256 gtk_widget_child_focus(widget, GTK_DIR_TAB_FORWARD);
3257 }
3258 else
3259 {
3260 wxLogTrace(TRACE_FOCUS,
3261 wxT("Setting focus to %s(%p, %s)"),
3262 GetClassInfo()->GetClassName(), this, GetLabel().c_str());
3263 gtk_widget_grab_focus(widget);
3264 }
3265 }
3266
3267 void wxWindowGTK::SetCanFocus(bool canFocus)
3268 {
3269 gtk_widget_set_can_focus(m_widget, canFocus);
3270
3271 if ( m_wxwindow && (m_widget != m_wxwindow) )
3272 {
3273 gtk_widget_set_can_focus(m_wxwindow, canFocus);
3274 }
3275 }
3276
3277 bool wxWindowGTK::Reparent( wxWindowBase *newParentBase )
3278 {
3279 wxCHECK_MSG( (m_widget != NULL), false, wxT("invalid window") );
3280
3281 wxWindowGTK * const newParent = (wxWindowGTK *)newParentBase;
3282
3283 wxASSERT( GTK_IS_WIDGET(m_widget) );
3284
3285 if ( !wxWindowBase::Reparent(newParent) )
3286 return false;
3287
3288 wxASSERT( GTK_IS_WIDGET(m_widget) );
3289
3290 // Notice that old m_parent pointer might be non-NULL here but the widget
3291 // still not have any parent at GTK level if it's a notebook page that had
3292 // been removed from the notebook so test this at GTK level and not wx one.
3293 if ( GtkWidget *parentGTK = gtk_widget_get_parent(m_widget) )
3294 gtk_container_remove(GTK_CONTAINER(parentGTK), m_widget);
3295
3296 wxASSERT( GTK_IS_WIDGET(m_widget) );
3297
3298 if (newParent)
3299 {
3300 if (gtk_widget_get_visible (newParent->m_widget))
3301 {
3302 m_showOnIdle = true;
3303 gtk_widget_hide( m_widget );
3304 }
3305 /* insert GTK representation */
3306 newParent->AddChildGTK(this);
3307 }
3308
3309 SetLayoutDirection(wxLayout_Default);
3310
3311 return true;
3312 }
3313
3314 void wxWindowGTK::DoAddChild(wxWindowGTK *child)
3315 {
3316 wxASSERT_MSG( (m_widget != NULL), wxT("invalid window") );
3317 wxASSERT_MSG( (child != NULL), wxT("invalid child window") );
3318
3319 /* add to list */
3320 AddChild( child );
3321
3322 /* insert GTK representation */
3323 AddChildGTK(child);
3324 }
3325
3326 void wxWindowGTK::AddChild(wxWindowBase *child)
3327 {
3328 wxWindowBase::AddChild(child);
3329 m_dirtyTabOrder = true;
3330 wxTheApp->WakeUpIdle();
3331 }
3332
3333 void wxWindowGTK::RemoveChild(wxWindowBase *child)
3334 {
3335 wxWindowBase::RemoveChild(child);
3336 m_dirtyTabOrder = true;
3337 wxTheApp->WakeUpIdle();
3338 }
3339
3340 /* static */
3341 wxLayoutDirection wxWindowGTK::GTKGetLayout(GtkWidget *widget)
3342 {
3343 return gtk_widget_get_direction(widget) == GTK_TEXT_DIR_RTL
3344 ? wxLayout_RightToLeft
3345 : wxLayout_LeftToRight;
3346 }
3347
3348 /* static */
3349 void wxWindowGTK::GTKSetLayout(GtkWidget *widget, wxLayoutDirection dir)
3350 {
3351 wxASSERT_MSG( dir != wxLayout_Default, wxT("invalid layout direction") );
3352
3353 gtk_widget_set_direction(widget,
3354 dir == wxLayout_RightToLeft ? GTK_TEXT_DIR_RTL
3355 : GTK_TEXT_DIR_LTR);
3356 }
3357
3358 wxLayoutDirection wxWindowGTK::GetLayoutDirection() const
3359 {
3360 return GTKGetLayout(m_widget);
3361 }
3362
3363 void wxWindowGTK::SetLayoutDirection(wxLayoutDirection dir)
3364 {
3365 if ( dir == wxLayout_Default )
3366 {
3367 const wxWindow *const parent = GetParent();
3368 if ( parent )
3369 {
3370 // inherit layout from parent.
3371 dir = parent->GetLayoutDirection();
3372 }
3373 else // no parent, use global default layout
3374 {
3375 dir = wxTheApp->GetLayoutDirection();
3376 }
3377 }
3378
3379 if ( dir == wxLayout_Default )
3380 return;
3381
3382 GTKSetLayout(m_widget, dir);
3383
3384 if (m_wxwindow && (m_wxwindow != m_widget))
3385 GTKSetLayout(m_wxwindow, dir);
3386 }
3387
3388 wxCoord
3389 wxWindowGTK::AdjustForLayoutDirection(wxCoord x,
3390 wxCoord WXUNUSED(width),
3391 wxCoord WXUNUSED(widthTotal)) const
3392 {
3393 // We now mirror the coordinates of RTL windows in wxPizza
3394 return x;
3395 }
3396
3397 void wxWindowGTK::DoMoveInTabOrder(wxWindow *win, WindowOrder move)
3398 {
3399 wxWindowBase::DoMoveInTabOrder(win, move);
3400 m_dirtyTabOrder = true;
3401 wxTheApp->WakeUpIdle();
3402 }
3403
3404 bool wxWindowGTK::DoNavigateIn(int flags)
3405 {
3406 if ( flags & wxNavigationKeyEvent::WinChange )
3407 {
3408 wxFAIL_MSG( wxT("not implemented") );
3409
3410 return false;
3411 }
3412 else // navigate inside the container
3413 {
3414 wxWindow *parent = wxGetTopLevelParent((wxWindow *)this);
3415 wxCHECK_MSG( parent, false, wxT("every window must have a TLW parent") );
3416
3417 GtkDirectionType dir;
3418 dir = flags & wxNavigationKeyEvent::IsForward ? GTK_DIR_TAB_FORWARD
3419 : GTK_DIR_TAB_BACKWARD;
3420
3421 gboolean rc;
3422 g_signal_emit_by_name(parent->m_widget, "focus", dir, &rc);
3423
3424 return rc == TRUE;
3425 }
3426 }
3427
3428 bool wxWindowGTK::GTKWidgetNeedsMnemonic() const
3429 {
3430 // none needed by default
3431 return false;
3432 }
3433
3434 void wxWindowGTK::GTKWidgetDoSetMnemonic(GtkWidget* WXUNUSED(w))
3435 {
3436 // nothing to do by default since none is needed
3437 }
3438
3439 void wxWindowGTK::RealizeTabOrder()
3440 {
3441 if (m_wxwindow)
3442 {
3443 if ( !m_children.empty() )
3444 {
3445 // we don't only construct the correct focus chain but also use
3446 // this opportunity to update the mnemonic widgets for the widgets
3447 // that need them
3448
3449 GList *chain = NULL;
3450 wxWindowGTK* mnemonicWindow = NULL;
3451
3452 for ( wxWindowList::const_iterator i = m_children.begin();
3453 i != m_children.end();
3454 ++i )
3455 {
3456 wxWindowGTK *win = *i;
3457
3458 bool focusableFromKeyboard = win->AcceptsFocusFromKeyboard();
3459
3460 if ( mnemonicWindow )
3461 {
3462 if ( focusableFromKeyboard )
3463 {
3464 // wxComboBox et al. needs to focus on on a different
3465 // widget than m_widget, so if the main widget isn't
3466 // focusable try the connect widget
3467 GtkWidget* w = win->m_widget;
3468 if ( !gtk_widget_get_can_focus(w) )
3469 {
3470 w = win->GetConnectWidget();
3471 if ( !gtk_widget_get_can_focus(w) )
3472 w = NULL;
3473 }
3474
3475 if ( w )
3476 {
3477 mnemonicWindow->GTKWidgetDoSetMnemonic(w);
3478 mnemonicWindow = NULL;
3479 }
3480 }
3481 }
3482 else if ( win->GTKWidgetNeedsMnemonic() )
3483 {
3484 mnemonicWindow = win;
3485 }
3486
3487 if ( focusableFromKeyboard )
3488 chain = g_list_prepend(chain, win->m_widget);
3489 }
3490
3491 chain = g_list_reverse(chain);
3492
3493 gtk_container_set_focus_chain(GTK_CONTAINER(m_wxwindow), chain);
3494 g_list_free(chain);
3495 }
3496 else // no children
3497 {
3498 gtk_container_unset_focus_chain(GTK_CONTAINER(m_wxwindow));
3499 }
3500 }
3501 }
3502
3503 void wxWindowGTK::Raise()
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_raise(gtk_widget_get_window(m_wxwindow));
3510 }
3511 else if (gtk_widget_get_window(m_widget))
3512 {
3513 gdk_window_raise(gtk_widget_get_window(m_widget));
3514 }
3515 }
3516
3517 void wxWindowGTK::Lower()
3518 {
3519 wxCHECK_RET( (m_widget != NULL), wxT("invalid window") );
3520
3521 if (m_wxwindow && gtk_widget_get_window(m_wxwindow))
3522 {
3523 gdk_window_lower(gtk_widget_get_window(m_wxwindow));
3524 }
3525 else if (gtk_widget_get_window(m_widget))
3526 {
3527 gdk_window_lower(gtk_widget_get_window(m_widget));
3528 }
3529 }
3530
3531 bool wxWindowGTK::SetCursor( const wxCursor &cursor )
3532 {
3533 if ( !wxWindowBase::SetCursor(cursor.IsOk() ? cursor : *wxSTANDARD_CURSOR) )
3534 return false;
3535
3536 GTKUpdateCursor();
3537
3538 return true;
3539 }
3540
3541 void wxWindowGTK::GTKUpdateCursor(bool update_self /*=true*/, bool recurse /*=true*/)
3542 {
3543 if (update_self)
3544 {
3545 wxCursor cursor(g_globalCursor.IsOk() ? g_globalCursor : GetCursor());
3546 if ( cursor.IsOk() )
3547 {
3548 wxArrayGdkWindows windowsThis;
3549 GdkWindow* window = GTKGetWindow(windowsThis);
3550 if (window)
3551 gdk_window_set_cursor( window, cursor.GetCursor() );
3552 else
3553 {
3554 const size_t count = windowsThis.size();
3555 for ( size_t n = 0; n < count; n++ )
3556 {
3557 GdkWindow *win = windowsThis[n];
3558 // It can be zero if the window has not been realized yet.
3559 if ( win )
3560 {
3561 gdk_window_set_cursor(win, cursor.GetCursor());
3562 }
3563 }
3564 }
3565 }
3566 }
3567
3568 if (recurse)
3569 {
3570 for (wxWindowList::iterator it = GetChildren().begin(); it != GetChildren().end(); ++it)
3571 {
3572 (*it)->GTKUpdateCursor( true );
3573 }
3574 }
3575 }
3576
3577 void wxWindowGTK::WarpPointer( int x, int y )
3578 {
3579 wxCHECK_RET( (m_widget != NULL), wxT("invalid window") );
3580
3581 ClientToScreen(&x, &y);
3582 GdkDisplay* display = gtk_widget_get_display(m_widget);
3583 GdkScreen* screen = gtk_widget_get_screen(m_widget);
3584 #ifdef __WXGTK30__
3585 GdkDeviceManager* manager = gdk_display_get_device_manager(display);
3586 gdk_device_warp(gdk_device_manager_get_client_pointer(manager), screen, x, y);
3587 #else
3588 #ifdef GDK_WINDOWING_X11
3589 XWarpPointer(GDK_DISPLAY_XDISPLAY(display),
3590 None,
3591 GDK_WINDOW_XID(gdk_screen_get_root_window(screen)),
3592 0, 0, 0, 0, x, y);
3593 #endif
3594 #endif
3595 }
3596
3597 wxWindowGTK::ScrollDir wxWindowGTK::ScrollDirFromRange(GtkRange *range) const
3598 {
3599 // find the scrollbar which generated the event
3600 for ( int dir = 0; dir < ScrollDir_Max; dir++ )
3601 {
3602 if ( range == m_scrollBar[dir] )
3603 return (ScrollDir)dir;
3604 }
3605
3606 wxFAIL_MSG( wxT("event from unknown scrollbar received") );
3607
3608 return ScrollDir_Max;
3609 }
3610
3611 bool wxWindowGTK::DoScrollByUnits(ScrollDir dir, ScrollUnit unit, int units)
3612 {
3613 bool changed = false;
3614 GtkRange* range = m_scrollBar[dir];
3615 if ( range && units )
3616 {
3617 GtkAdjustment* adj = gtk_range_get_adjustment(range);
3618 double inc = unit == ScrollUnit_Line ? gtk_adjustment_get_step_increment(adj)
3619 : gtk_adjustment_get_page_increment(adj);
3620
3621 const int posOld = wxRound(gtk_adjustment_get_value(adj));
3622 gtk_range_set_value(range, posOld + units*inc);
3623
3624 changed = wxRound(gtk_adjustment_get_value(adj)) != posOld;
3625 }
3626
3627 return changed;
3628 }
3629
3630 bool wxWindowGTK::ScrollLines(int lines)
3631 {
3632 return DoScrollByUnits(ScrollDir_Vert, ScrollUnit_Line, lines);
3633 }
3634
3635 bool wxWindowGTK::ScrollPages(int pages)
3636 {
3637 return DoScrollByUnits(ScrollDir_Vert, ScrollUnit_Page, pages);
3638 }
3639
3640 void wxWindowGTK::Refresh(bool WXUNUSED(eraseBackground),
3641 const wxRect *rect)
3642 {
3643 if (m_wxwindow)
3644 {
3645 if (gtk_widget_get_mapped(m_wxwindow))
3646 {
3647 GdkWindow* window = gtk_widget_get_window(m_wxwindow);
3648 if (rect)
3649 {
3650 GdkRectangle r = { rect->x, rect->y, rect->width, rect->height };
3651 if (GetLayoutDirection() == wxLayout_RightToLeft)
3652 r.x = gdk_window_get_width(window) - r.x - rect->width;
3653 gdk_window_invalidate_rect(window, &r, true);
3654 }
3655 else
3656 gdk_window_invalidate_rect(window, NULL, true);
3657 }
3658 }
3659 else if (m_widget)
3660 {
3661 if (gtk_widget_get_mapped(m_widget))
3662 {
3663 if (rect)
3664 gtk_widget_queue_draw_area(m_widget, rect->x, rect->y, rect->width, rect->height);
3665 else
3666 gtk_widget_queue_draw(m_widget);
3667 }
3668 }
3669 }
3670
3671 void wxWindowGTK::Update()
3672 {
3673 if (m_widget && gtk_widget_get_mapped(m_widget))
3674 {
3675 GdkDisplay* display = gtk_widget_get_display(m_widget);
3676 // Flush everything out to the server, and wait for it to finish.
3677 // This ensures nothing will overwrite the drawing we are about to do.
3678 gdk_display_sync(display);
3679
3680 GdkWindow* window = GTKGetDrawingWindow();
3681 if (window == NULL)
3682 window = gtk_widget_get_window(m_widget);
3683 gdk_window_process_updates(window, true);
3684
3685 // Flush again, but no need to wait for it to finish
3686 gdk_display_flush(display);
3687 }
3688 }
3689
3690 bool wxWindowGTK::DoIsExposed( int x, int y ) const
3691 {
3692 return m_updateRegion.Contains(x, y) != wxOutRegion;
3693 }
3694
3695 bool wxWindowGTK::DoIsExposed( int x, int y, int w, int h ) const
3696 {
3697 if (GetLayoutDirection() == wxLayout_RightToLeft)
3698 return m_updateRegion.Contains(x-w, y, w, h) != wxOutRegion;
3699 else
3700 return m_updateRegion.Contains(x, y, w, h) != wxOutRegion;
3701 }
3702
3703 void wxWindowGTK::GtkSendPaintEvents()
3704 {
3705 if (!m_wxwindow)
3706 {
3707 m_updateRegion.Clear();
3708 return;
3709 }
3710 #if wxGTK_HAS_COMPOSITING_SUPPORT
3711 cairo_t* cr = NULL;
3712 #endif
3713 // Clip to paint region in wxClientDC
3714 m_clipPaintRegion = true;
3715
3716 m_nativeUpdateRegion = m_updateRegion;
3717
3718 if (GetLayoutDirection() == wxLayout_RightToLeft)
3719 {
3720 // Transform m_updateRegion under RTL
3721 m_updateRegion.Clear();
3722
3723 gint width;
3724 gdk_drawable_get_size(gtk_widget_get_window(m_wxwindow), &width, NULL);
3725
3726 wxRegionIterator upd( m_nativeUpdateRegion );
3727 while (upd)
3728 {
3729 wxRect rect;
3730 rect.x = upd.GetX();
3731 rect.y = upd.GetY();
3732 rect.width = upd.GetWidth();
3733 rect.height = upd.GetHeight();
3734
3735 rect.x = width - rect.x - rect.width;
3736 m_updateRegion.Union( rect );
3737
3738 ++upd;
3739 }
3740 }
3741
3742 switch ( GetBackgroundStyle() )
3743 {
3744 case wxBG_STYLE_TRANSPARENT:
3745 #if wxGTK_HAS_COMPOSITING_SUPPORT
3746 if (IsTransparentBackgroundSupported())
3747 {
3748 // Set a transparent background, so that overlaying in parent
3749 // might indeed let see through where this child did not
3750 // explicitly paint.
3751 // NB: it works also for top level windows (but this is the
3752 // windows manager which then does the compositing job)
3753 cr = gdk_cairo_create(m_wxwindow->window);
3754 gdk_cairo_region(cr, m_nativeUpdateRegion.GetRegion());
3755 cairo_clip(cr);
3756
3757 cairo_set_operator(cr, CAIRO_OPERATOR_CLEAR);
3758 cairo_paint(cr);
3759 cairo_set_operator(cr, CAIRO_OPERATOR_OVER);
3760 cairo_surface_flush(cairo_get_target(cr));
3761 }
3762 #endif // wxGTK_HAS_COMPOSITING_SUPPORT
3763 break;
3764
3765 case wxBG_STYLE_ERASE:
3766 {
3767 wxWindowDC dc( (wxWindow*)this );
3768 dc.SetDeviceClippingRegion( m_updateRegion );
3769
3770 // Work around gtk-qt <= 0.60 bug whereby the window colour
3771 // remains grey
3772 if ( UseBgCol() &&
3773 wxSystemOptions::
3774 GetOptionInt("gtk.window.force-background-colour") )
3775 {
3776 dc.SetBackground(GetBackgroundColour());
3777 dc.Clear();
3778 }
3779
3780 wxEraseEvent erase_event( GetId(), &dc );
3781 erase_event.SetEventObject( this );
3782
3783 if ( HandleWindowEvent(erase_event) )
3784 {
3785 // background erased, don't do it again
3786 break;
3787 }
3788 }
3789 // fall through
3790
3791 case wxBG_STYLE_SYSTEM:
3792 if ( GetThemeEnabled() )
3793 {
3794 // find ancestor from which to steal background
3795 wxWindow *parent = wxGetTopLevelParent((wxWindow *)this);
3796 if (!parent)
3797 parent = (wxWindow*)this;
3798
3799 if (gtk_widget_get_mapped(parent->m_widget))
3800 {
3801 wxRegionIterator upd( m_nativeUpdateRegion );
3802 while (upd)
3803 {
3804 GdkRectangle rect;
3805 rect.x = upd.GetX();
3806 rect.y = upd.GetY();
3807 rect.width = upd.GetWidth();
3808 rect.height = upd.GetHeight();
3809
3810 gtk_paint_flat_box(gtk_widget_get_style(parent->m_widget),
3811 GTKGetDrawingWindow(),
3812 gtk_widget_get_state(m_wxwindow),
3813 GTK_SHADOW_NONE,
3814 &rect,
3815 parent->m_widget,
3816 (char *)"base",
3817 0, 0, -1, -1 );
3818
3819 ++upd;
3820 }
3821 }
3822 }
3823 break;
3824
3825 case wxBG_STYLE_PAINT:
3826 // nothing to do: window will be painted over in EVT_PAINT
3827 break;
3828
3829 default:
3830 wxFAIL_MSG( "unsupported background style" );
3831 }
3832
3833 wxNcPaintEvent nc_paint_event( GetId() );
3834 nc_paint_event.SetEventObject( this );
3835 HandleWindowEvent( nc_paint_event );
3836
3837 wxPaintEvent paint_event( GetId() );
3838 paint_event.SetEventObject( this );
3839 HandleWindowEvent( paint_event );
3840
3841 #if wxGTK_HAS_COMPOSITING_SUPPORT
3842 if (IsTransparentBackgroundSupported())
3843 { // now composite children which need it
3844 // Overlay all our composite children on top of the painted area
3845 wxWindowList::compatibility_iterator node;
3846 for ( node = m_children.GetFirst(); node ; node = node->GetNext() )
3847 {
3848 wxWindow *compositeChild = node->GetData();
3849 if (compositeChild->GetBackgroundStyle() == wxBG_STYLE_TRANSPARENT)
3850 {
3851 if (cr == NULL)
3852 {
3853 cr = gdk_cairo_create(m_wxwindow->window);
3854 gdk_cairo_region(cr, m_nativeUpdateRegion.GetRegion());
3855 cairo_clip(cr);
3856 }
3857
3858 GtkWidget *child = compositeChild->m_wxwindow;
3859 GtkAllocation alloc;
3860 gtk_widget_get_allocation(child, &alloc);
3861
3862 // The source data is the (composited) child
3863 gdk_cairo_set_source_window(
3864 cr, gtk_widget_get_window(child), alloc.x, alloc.y);
3865
3866 cairo_paint(cr);
3867 }
3868 }
3869 if (cr)
3870 cairo_destroy(cr);
3871 }
3872 #endif // wxGTK_HAS_COMPOSITING_SUPPORT
3873
3874 m_clipPaintRegion = false;
3875
3876 m_updateRegion.Clear();
3877 m_nativeUpdateRegion.Clear();
3878 }
3879
3880 void wxWindowGTK::SetDoubleBuffered( bool on )
3881 {
3882 wxCHECK_RET( (m_widget != NULL), wxT("invalid window") );
3883
3884 if ( m_wxwindow )
3885 gtk_widget_set_double_buffered( m_wxwindow, on );
3886 }
3887
3888 bool wxWindowGTK::IsDoubleBuffered() const
3889 {
3890 return gtk_widget_get_double_buffered( m_wxwindow );
3891 }
3892
3893 void wxWindowGTK::ClearBackground()
3894 {
3895 wxCHECK_RET( m_widget != NULL, wxT("invalid window") );
3896 }
3897
3898 #if wxUSE_TOOLTIPS
3899 void wxWindowGTK::DoSetToolTip( wxToolTip *tip )
3900 {
3901 if (m_tooltip != tip)
3902 {
3903 wxWindowBase::DoSetToolTip(tip);
3904
3905 if (m_tooltip)
3906 m_tooltip->GTKSetWindow(static_cast<wxWindow*>(this));
3907 else
3908 GTKApplyToolTip(NULL);
3909 }
3910 }
3911
3912 void wxWindowGTK::GTKApplyToolTip(const char* tip)
3913 {
3914 wxToolTip::GTKApply(GetConnectWidget(), tip);
3915 }
3916 #endif // wxUSE_TOOLTIPS
3917
3918 bool wxWindowGTK::SetBackgroundColour( const wxColour &colour )
3919 {
3920 wxCHECK_MSG( m_widget != NULL, false, wxT("invalid window") );
3921
3922 if (!wxWindowBase::SetBackgroundColour(colour))
3923 return false;
3924
3925 if (colour.IsOk())
3926 {
3927 // We need the pixel value e.g. for background clearing.
3928 m_backgroundColour.CalcPixel(gtk_widget_get_colormap(m_widget));
3929 }
3930
3931 // apply style change (forceStyle=true so that new style is applied
3932 // even if the bg colour changed from valid to wxNullColour)
3933 GTKApplyWidgetStyle(true);
3934
3935 return true;
3936 }
3937
3938 bool wxWindowGTK::SetForegroundColour( const wxColour &colour )
3939 {
3940 wxCHECK_MSG( m_widget != NULL, false, wxT("invalid window") );
3941
3942 if (!wxWindowBase::SetForegroundColour(colour))
3943 {
3944 return false;
3945 }
3946
3947 if (colour.IsOk())
3948 {
3949 // We need the pixel value e.g. for background clearing.
3950 m_foregroundColour.CalcPixel(gtk_widget_get_colormap(m_widget));
3951 }
3952
3953 // apply style change (forceStyle=true so that new style is applied
3954 // even if the bg colour changed from valid to wxNullColour):
3955 GTKApplyWidgetStyle(true);
3956
3957 return true;
3958 }
3959
3960 PangoContext *wxWindowGTK::GTKGetPangoDefaultContext()
3961 {
3962 return gtk_widget_get_pango_context( m_widget );
3963 }
3964
3965 GtkRcStyle *wxWindowGTK::GTKCreateWidgetStyle(bool forceStyle)
3966 {
3967 // do we need to apply any changes at all?
3968 if ( !forceStyle &&
3969 !m_font.IsOk() &&
3970 !m_foregroundColour.IsOk() && !m_backgroundColour.IsOk() )
3971 {
3972 return NULL;
3973 }
3974
3975 GtkRcStyle *style = gtk_rc_style_new();
3976
3977 if ( m_font.IsOk() )
3978 {
3979 style->font_desc =
3980 pango_font_description_copy( m_font.GetNativeFontInfo()->description );
3981 }
3982
3983 int flagsNormal = 0,
3984 flagsPrelight = 0,
3985 flagsActive = 0,
3986 flagsInsensitive = 0;
3987
3988 if ( m_foregroundColour.IsOk() )
3989 {
3990 const GdkColor *fg = m_foregroundColour.GetColor();
3991
3992 style->fg[GTK_STATE_NORMAL] =
3993 style->text[GTK_STATE_NORMAL] = *fg;
3994 flagsNormal |= GTK_RC_FG | GTK_RC_TEXT;
3995
3996 style->fg[GTK_STATE_PRELIGHT] =
3997 style->text[GTK_STATE_PRELIGHT] = *fg;
3998 flagsPrelight |= GTK_RC_FG | GTK_RC_TEXT;
3999
4000 style->fg[GTK_STATE_ACTIVE] =
4001 style->text[GTK_STATE_ACTIVE] = *fg;
4002 flagsActive |= GTK_RC_FG | GTK_RC_TEXT;
4003 }
4004
4005 if ( m_backgroundColour.IsOk() )
4006 {
4007 const GdkColor *bg = m_backgroundColour.GetColor();
4008
4009 style->bg[GTK_STATE_NORMAL] =
4010 style->base[GTK_STATE_NORMAL] = *bg;
4011 flagsNormal |= GTK_RC_BG | GTK_RC_BASE;
4012
4013 style->bg[GTK_STATE_PRELIGHT] =
4014 style->base[GTK_STATE_PRELIGHT] = *bg;
4015 flagsPrelight |= GTK_RC_BG | GTK_RC_BASE;
4016
4017 style->bg[GTK_STATE_ACTIVE] =
4018 style->base[GTK_STATE_ACTIVE] = *bg;
4019 flagsActive |= GTK_RC_BG | GTK_RC_BASE;
4020
4021 style->bg[GTK_STATE_INSENSITIVE] =
4022 style->base[GTK_STATE_INSENSITIVE] = *bg;
4023 flagsInsensitive |= GTK_RC_BG | GTK_RC_BASE;
4024 }
4025
4026 style->color_flags[GTK_STATE_NORMAL] = (GtkRcFlags)flagsNormal;
4027 style->color_flags[GTK_STATE_PRELIGHT] = (GtkRcFlags)flagsPrelight;
4028 style->color_flags[GTK_STATE_ACTIVE] = (GtkRcFlags)flagsActive;
4029 style->color_flags[GTK_STATE_INSENSITIVE] = (GtkRcFlags)flagsInsensitive;
4030
4031 return style;
4032 }
4033
4034 void wxWindowGTK::GTKApplyWidgetStyle(bool forceStyle)
4035 {
4036 GtkRcStyle *style = GTKCreateWidgetStyle(forceStyle);
4037 if ( style )
4038 {
4039 DoApplyWidgetStyle(style);
4040 g_object_unref(style);
4041 }
4042
4043 // Style change may affect GTK+'s size calculation:
4044 InvalidateBestSize();
4045 }
4046
4047 void wxWindowGTK::DoApplyWidgetStyle(GtkRcStyle *style)
4048 {
4049 if ( m_wxwindow )
4050 {
4051 // block the signal temporarily to avoid sending
4052 // wxSysColourChangedEvents when we change the colours ourselves
4053 bool unblock = false;
4054 if ( IsTopLevel() )
4055 {
4056 unblock = true;
4057 g_signal_handlers_block_by_func(
4058 m_wxwindow, (void *)gtk_window_style_set_callback, this);
4059 }
4060
4061 gtk_widget_modify_style(m_wxwindow, style);
4062
4063 if ( unblock )
4064 {
4065 g_signal_handlers_unblock_by_func(
4066 m_wxwindow, (void *)gtk_window_style_set_callback, this);
4067 }
4068 }
4069 else
4070 {
4071 gtk_widget_modify_style(m_widget, style);
4072 }
4073 }
4074
4075 bool wxWindowGTK::SetBackgroundStyle(wxBackgroundStyle style)
4076 {
4077 if (!wxWindowBase::SetBackgroundStyle(style))
4078 return false;
4079
4080 GdkWindow *window;
4081 if ( m_wxwindow )
4082 {
4083 window = GTKGetDrawingWindow();
4084 }
4085 else
4086 {
4087 GtkWidget * const w = GetConnectWidget();
4088 window = w ? gtk_widget_get_window(w) : NULL;
4089 }
4090
4091 bool wantNoBackPixmap = style == wxBG_STYLE_PAINT || style == wxBG_STYLE_TRANSPARENT;
4092
4093 if ( wantNoBackPixmap )
4094 {
4095 if (window)
4096 {
4097 // Make sure GDK/X11 doesn't refresh the window
4098 // automatically.
4099 gdk_window_set_back_pixmap( window, NULL, FALSE );
4100 m_needsStyleChange = false;
4101 }
4102 else // window not realized yet
4103 {
4104 // Do when window is realized
4105 m_needsStyleChange = true;
4106 }
4107
4108 // Don't apply widget style, or we get a grey background
4109 }
4110 else
4111 {
4112 // apply style change (forceStyle=true so that new style is applied
4113 // even if the bg colour changed from valid to wxNullColour):
4114 GTKApplyWidgetStyle(true);
4115 }
4116
4117 return true;
4118 }
4119
4120 bool wxWindowGTK::IsTransparentBackgroundSupported(wxString* reason) const
4121 {
4122 #if wxGTK_HAS_COMPOSITING_SUPPORT
4123 if (gtk_check_version(wxGTK_VERSION_REQUIRED_FOR_COMPOSITING) != NULL)
4124 {
4125 if (reason)
4126 {
4127 *reason = _("GTK+ installed on this machine is too old to "
4128 "support screen compositing, please install "
4129 "GTK+ 2.12 or later.");
4130 }
4131
4132 return false;
4133 }
4134
4135 // NB: We don't check here if the particular kind of widget supports
4136 // transparency, we check only if it would be possible for a generic window
4137
4138 wxCHECK_MSG ( m_widget, false, "Window must be created first" );
4139
4140 if (!gdk_screen_is_composited(gtk_widget_get_screen(m_widget)))
4141 {
4142 if (reason)
4143 {
4144 *reason = _("Compositing not supported by this system, "
4145 "please enable it in your Window Manager.");
4146 }
4147
4148 return false;
4149 }
4150
4151 return true;
4152 #else
4153 if (reason)
4154 {
4155 *reason = _("This program was compiled with a too old version of GTK+, "
4156 "please rebuild with GTK+ 2.12 or newer.");
4157 }
4158 #endif // wxGTK_HAS_COMPOSITING_SUPPORT/!wxGTK_HAS_COMPOSITING_SUPPORT
4159
4160 return false;
4161 }
4162
4163 // ----------------------------------------------------------------------------
4164 // Pop-up menu stuff
4165 // ----------------------------------------------------------------------------
4166
4167 #if wxUSE_MENUS_NATIVE
4168
4169 extern "C" {
4170 static
4171 void wxPopupMenuPositionCallback( GtkMenu *menu,
4172 gint *x, gint *y,
4173 gboolean * WXUNUSED(whatever),
4174 gpointer user_data )
4175 {
4176 // ensure that the menu appears entirely on screen
4177 GtkRequisition req;
4178 gtk_widget_get_child_requisition(GTK_WIDGET(menu), &req);
4179
4180 wxSize sizeScreen = wxGetDisplaySize();
4181 wxPoint *pos = (wxPoint*)user_data;
4182
4183 gint xmax = sizeScreen.x - req.width,
4184 ymax = sizeScreen.y - req.height;
4185
4186 *x = pos->x < xmax ? pos->x : xmax;
4187 *y = pos->y < ymax ? pos->y : ymax;
4188 }
4189 }
4190
4191 bool wxWindowGTK::DoPopupMenu( wxMenu *menu, int x, int y )
4192 {
4193 wxCHECK_MSG( m_widget != NULL, false, wxT("invalid window") );
4194
4195 // For compatibility with other ports, pretend that the window showing the
4196 // menu has focus while the menu is shown. This is needed because the popup
4197 // menu actually steals the focus from the window it's associated it in
4198 // wxGTK unlike, say, wxMSW.
4199 wxWindowGTK* const oldPendingFocus = gs_pendingFocus;
4200 gs_pendingFocus = this;
4201 wxON_BLOCK_EXIT_SET( gs_pendingFocus, oldPendingFocus );
4202
4203 menu->UpdateUI();
4204
4205 wxPoint pos;
4206 gpointer userdata;
4207 GtkMenuPositionFunc posfunc;
4208 if ( x == -1 && y == -1 )
4209 {
4210 // use GTK's default positioning algorithm
4211 userdata = NULL;
4212 posfunc = NULL;
4213 }
4214 else
4215 {
4216 pos = ClientToScreen(wxPoint(x, y));
4217 userdata = &pos;
4218 posfunc = wxPopupMenuPositionCallback;
4219 }
4220
4221 menu->m_popupShown = true;
4222 gtk_menu_popup(
4223 GTK_MENU(menu->m_menu),
4224 NULL, // parent menu shell
4225 NULL, // parent menu item
4226 posfunc, // function to position it
4227 userdata, // client data
4228 0, // button used to activate it
4229 gtk_get_current_event_time()
4230 );
4231
4232 while (menu->m_popupShown)
4233 {
4234 gtk_main_iteration();
4235 }
4236
4237 return true;
4238 }
4239
4240 #endif // wxUSE_MENUS_NATIVE
4241
4242 #if wxUSE_DRAG_AND_DROP
4243
4244 void wxWindowGTK::SetDropTarget( wxDropTarget *dropTarget )
4245 {
4246 wxCHECK_RET( m_widget != NULL, wxT("invalid window") );
4247
4248 GtkWidget *dnd_widget = GetConnectWidget();
4249
4250 if (m_dropTarget) m_dropTarget->GtkUnregisterWidget( dnd_widget );
4251
4252 if (m_dropTarget) delete m_dropTarget;
4253 m_dropTarget = dropTarget;
4254
4255 if (m_dropTarget) m_dropTarget->GtkRegisterWidget( dnd_widget );
4256 }
4257
4258 #endif // wxUSE_DRAG_AND_DROP
4259
4260 GtkWidget* wxWindowGTK::GetConnectWidget()
4261 {
4262 GtkWidget *connect_widget = m_widget;
4263 if (m_wxwindow) connect_widget = m_wxwindow;
4264
4265 return connect_widget;
4266 }
4267
4268 bool wxWindowGTK::GTKIsOwnWindow(GdkWindow *window) const
4269 {
4270 wxArrayGdkWindows windowsThis;
4271 GdkWindow * const winThis = GTKGetWindow(windowsThis);
4272
4273 return winThis ? window == winThis
4274 : windowsThis.Index(window) != wxNOT_FOUND;
4275 }
4276
4277 GdkWindow *wxWindowGTK::GTKGetWindow(wxArrayGdkWindows& WXUNUSED(windows)) const
4278 {
4279 return m_wxwindow ? GTKGetDrawingWindow() : gtk_widget_get_window(m_widget);
4280 }
4281
4282 bool wxWindowGTK::SetFont( const wxFont &font )
4283 {
4284 wxCHECK_MSG( m_widget != NULL, false, wxT("invalid window") );
4285
4286 if (!wxWindowBase::SetFont(font))
4287 return false;
4288
4289 // apply style change (forceStyle=true so that new style is applied
4290 // even if the font changed from valid to wxNullFont):
4291 GTKApplyWidgetStyle(true);
4292
4293 return true;
4294 }
4295
4296 void wxWindowGTK::DoCaptureMouse()
4297 {
4298 wxCHECK_RET( m_widget != NULL, wxT("invalid window") );
4299
4300 GdkWindow *window = NULL;
4301 if (m_wxwindow)
4302 window = GTKGetDrawingWindow();
4303 else
4304 window = gtk_widget_get_window(GetConnectWidget());
4305
4306 wxCHECK_RET( window, wxT("CaptureMouse() failed") );
4307
4308 const wxCursor* cursor = &m_cursor;
4309 if (!cursor->IsOk())
4310 cursor = wxSTANDARD_CURSOR;
4311
4312 gdk_pointer_grab( window, FALSE,
4313 (GdkEventMask)
4314 (GDK_BUTTON_PRESS_MASK |
4315 GDK_BUTTON_RELEASE_MASK |
4316 GDK_POINTER_MOTION_HINT_MASK |
4317 GDK_POINTER_MOTION_MASK),
4318 NULL,
4319 cursor->GetCursor(),
4320 (guint32)GDK_CURRENT_TIME );
4321 g_captureWindow = this;
4322 g_captureWindowHasMouse = true;
4323 }
4324
4325 void wxWindowGTK::DoReleaseMouse()
4326 {
4327 wxCHECK_RET( m_widget != NULL, wxT("invalid window") );
4328
4329 wxCHECK_RET( g_captureWindow, wxT("can't release mouse - not captured") );
4330
4331 g_captureWindow = NULL;
4332
4333 GdkWindow *window = NULL;
4334 if (m_wxwindow)
4335 window = GTKGetDrawingWindow();
4336 else
4337 window = gtk_widget_get_window(GetConnectWidget());
4338
4339 if (!window)
4340 return;
4341
4342 gdk_pointer_ungrab ( (guint32)GDK_CURRENT_TIME );
4343 }
4344
4345 void wxWindowGTK::GTKReleaseMouseAndNotify()
4346 {
4347 DoReleaseMouse();
4348 wxMouseCaptureLostEvent evt(GetId());
4349 evt.SetEventObject( this );
4350 HandleWindowEvent( evt );
4351 }
4352
4353 /* static */
4354 wxWindow *wxWindowBase::GetCapture()
4355 {
4356 return (wxWindow *)g_captureWindow;
4357 }
4358
4359 bool wxWindowGTK::IsRetained() const
4360 {
4361 return false;
4362 }
4363
4364 void wxWindowGTK::SetScrollbar(int orient,
4365 int pos,
4366 int thumbVisible,
4367 int range,
4368 bool WXUNUSED(update))
4369 {
4370 const int dir = ScrollDirFromOrient(orient);
4371 GtkRange* const sb = m_scrollBar[dir];
4372 wxCHECK_RET( sb, wxT("this window is not scrollable") );
4373
4374 if (range <= 0)
4375 {
4376 // GtkRange requires upper > lower
4377 range =
4378 thumbVisible = 1;
4379 }
4380
4381 g_signal_handlers_block_by_func(
4382 sb, (void*)gtk_scrollbar_value_changed, this);
4383
4384 gtk_range_set_increments(sb, 1, thumbVisible);
4385 gtk_adjustment_set_page_size(gtk_range_get_adjustment(sb), thumbVisible);
4386 gtk_range_set_range(sb, 0, range);
4387 gtk_range_set_value(sb, pos);
4388 m_scrollPos[dir] = gtk_range_get_value(sb);
4389
4390 g_signal_handlers_unblock_by_func(
4391 sb, (void*)gtk_scrollbar_value_changed, this);
4392 }
4393
4394 void wxWindowGTK::SetScrollPos(int orient, int pos, bool WXUNUSED(refresh))
4395 {
4396 const int dir = ScrollDirFromOrient(orient);
4397 GtkRange * const sb = m_scrollBar[dir];
4398 wxCHECK_RET( sb, wxT("this window is not scrollable") );
4399
4400 // This check is more than an optimization. Without it, the slider
4401 // will not move smoothly while tracking when using wxScrollHelper.
4402 if (GetScrollPos(orient) != pos)
4403 {
4404 g_signal_handlers_block_by_func(
4405 sb, (void*)gtk_scrollbar_value_changed, this);
4406
4407 gtk_range_set_value(sb, pos);
4408 m_scrollPos[dir] = gtk_range_get_value(sb);
4409
4410 g_signal_handlers_unblock_by_func(
4411 sb, (void*)gtk_scrollbar_value_changed, this);
4412 }
4413 }
4414
4415 int wxWindowGTK::GetScrollThumb(int orient) const
4416 {
4417 GtkRange * const sb = m_scrollBar[ScrollDirFromOrient(orient)];
4418 wxCHECK_MSG( sb, 0, wxT("this window is not scrollable") );
4419
4420 return wxRound(gtk_adjustment_get_page_size(gtk_range_get_adjustment(sb)));
4421 }
4422
4423 int wxWindowGTK::GetScrollPos( int orient ) const
4424 {
4425 GtkRange * const sb = m_scrollBar[ScrollDirFromOrient(orient)];
4426 wxCHECK_MSG( sb, 0, wxT("this window is not scrollable") );
4427
4428 return wxRound(gtk_range_get_value(sb));
4429 }
4430
4431 int wxWindowGTK::GetScrollRange( int orient ) const
4432 {
4433 GtkRange * const sb = m_scrollBar[ScrollDirFromOrient(orient)];
4434 wxCHECK_MSG( sb, 0, wxT("this window is not scrollable") );
4435
4436 return wxRound(gtk_adjustment_get_upper(gtk_range_get_adjustment(sb)));
4437 }
4438
4439 // Determine if increment is the same as +/-x, allowing for some small
4440 // difference due to possible inexactness in floating point arithmetic
4441 static inline bool IsScrollIncrement(double increment, double x)
4442 {
4443 wxASSERT(increment > 0);
4444 const double tolerance = 1.0 / 1024;
4445 return fabs(increment - fabs(x)) < tolerance;
4446 }
4447
4448 wxEventType wxWindowGTK::GTKGetScrollEventType(GtkRange* range)
4449 {
4450 wxASSERT(range == m_scrollBar[0] || range == m_scrollBar[1]);
4451
4452 const int barIndex = range == m_scrollBar[1];
4453
4454 const double value = gtk_range_get_value(range);
4455
4456 // save previous position
4457 const double oldPos = m_scrollPos[barIndex];
4458 // update current position
4459 m_scrollPos[barIndex] = value;
4460 // If event should be ignored, or integral position has not changed
4461 if (!m_hasVMT || g_blockEventsOnDrag || wxRound(value) == wxRound(oldPos))
4462 {
4463 return wxEVT_NULL;
4464 }
4465
4466 wxEventType eventType = wxEVT_SCROLL_THUMBTRACK;
4467 if (!m_isScrolling)
4468 {
4469 // Difference from last change event
4470 const double diff = value - oldPos;
4471 const bool isDown = diff > 0;
4472
4473 GtkAdjustment* adj = gtk_range_get_adjustment(range);
4474 if (IsScrollIncrement(gtk_adjustment_get_step_increment(adj), diff))
4475 {
4476 eventType = isDown ? wxEVT_SCROLL_LINEDOWN : wxEVT_SCROLL_LINEUP;
4477 }
4478 else if (IsScrollIncrement(gtk_adjustment_get_page_increment(adj), diff))
4479 {
4480 eventType = isDown ? wxEVT_SCROLL_PAGEDOWN : wxEVT_SCROLL_PAGEUP;
4481 }
4482 else if (m_mouseButtonDown)
4483 {
4484 // Assume track event
4485 m_isScrolling = true;
4486 }
4487 }
4488 return eventType;
4489 }
4490
4491 void wxWindowGTK::ScrollWindow( int dx, int dy, const wxRect* WXUNUSED(rect) )
4492 {
4493 wxCHECK_RET( m_widget != NULL, wxT("invalid window") );
4494
4495 wxCHECK_RET( m_wxwindow != NULL, wxT("window needs client area for scrolling") );
4496
4497 // No scrolling requested.
4498 if ((dx == 0) && (dy == 0)) return;
4499
4500 m_clipPaintRegion = true;
4501
4502 WX_PIZZA(m_wxwindow)->scroll(dx, dy);
4503
4504 m_clipPaintRegion = false;
4505
4506 #if wxUSE_CARET
4507 bool restoreCaret = (GetCaret() != NULL && GetCaret()->IsVisible());
4508 if (restoreCaret)
4509 {
4510 wxRect caretRect(GetCaret()->GetPosition(), GetCaret()->GetSize());
4511 if (dx > 0)
4512 caretRect.width += dx;
4513 else
4514 {
4515 caretRect.x += dx; caretRect.width -= dx;
4516 }
4517 if (dy > 0)
4518 caretRect.height += dy;
4519 else
4520 {
4521 caretRect.y += dy; caretRect.height -= dy;
4522 }
4523
4524 RefreshRect(caretRect);
4525 }
4526 #endif // wxUSE_CARET
4527 }
4528
4529 void wxWindowGTK::GTKScrolledWindowSetBorder(GtkWidget* w, int wxstyle)
4530 {
4531 //RN: Note that static controls usually have no border on gtk, so maybe
4532 //it makes sense to treat that as simply no border at the wx level
4533 //as well...
4534 if (!(wxstyle & wxNO_BORDER) && !(wxstyle & wxBORDER_STATIC))
4535 {
4536 GtkShadowType gtkstyle;
4537
4538 if(wxstyle & wxBORDER_RAISED)
4539 gtkstyle = GTK_SHADOW_OUT;
4540 else if ((wxstyle & wxBORDER_SUNKEN) || (wxstyle & wxBORDER_THEME))
4541 gtkstyle = GTK_SHADOW_IN;
4542 #if 0
4543 // Now obsolete
4544 else if (wxstyle & wxBORDER_DOUBLE)
4545 gtkstyle = GTK_SHADOW_ETCHED_IN;
4546 #endif
4547 else //default
4548 gtkstyle = GTK_SHADOW_IN;
4549
4550 gtk_scrolled_window_set_shadow_type( GTK_SCROLLED_WINDOW(w),
4551 gtkstyle );
4552 }
4553 }
4554
4555 // Find the wxWindow at the current mouse position, also returning the mouse
4556 // position.
4557 wxWindow* wxFindWindowAtPointer(wxPoint& pt)
4558 {
4559 pt = wxGetMousePosition();
4560 wxWindow* found = wxFindWindowAtPoint(pt);
4561 return found;
4562 }
4563
4564 // Get the current mouse position.
4565 wxPoint wxGetMousePosition()
4566 {
4567 wxWindow* tlw = NULL;
4568 if (!wxTopLevelWindows.empty())
4569 tlw = wxTopLevelWindows.front();
4570 GdkDisplay* display;
4571 if (tlw && tlw->m_widget)
4572 display = gtk_widget_get_display(tlw->m_widget);
4573 else
4574 display = gdk_display_get_default();
4575
4576 int x, y;
4577 gdk_display_get_pointer(display, NULL, &x, &y, NULL);
4578 return wxPoint(x, y);
4579 }
4580
4581 GdkWindow* wxWindowGTK::GTKGetDrawingWindow() const
4582 {
4583 GdkWindow* window = NULL;
4584 if (m_wxwindow)
4585 window = gtk_widget_get_window(m_wxwindow);
4586 return window;
4587 }
4588
4589 // ----------------------------------------------------------------------------
4590 // freeze/thaw
4591 // ----------------------------------------------------------------------------
4592
4593 extern "C"
4594 {
4595
4596 // this is called if we attempted to freeze unrealized widget when it finally
4597 // is realized (and so can be frozen):
4598 static void wx_frozen_widget_realize(GtkWidget* w, wxWindowGTK* win)
4599 {
4600 wxASSERT( w && gtk_widget_get_has_window(w) );
4601 wxASSERT( gtk_widget_get_realized(w) );
4602
4603 g_signal_handlers_disconnect_by_func
4604 (
4605 w,
4606 (void*)wx_frozen_widget_realize,
4607 win
4608 );
4609
4610 GdkWindow* window;
4611 if (w == win->m_wxwindow)
4612 window = win->GTKGetDrawingWindow();
4613 else
4614 window = gtk_widget_get_window(w);
4615 gdk_window_freeze_updates(window);
4616 }
4617
4618 } // extern "C"
4619
4620 void wxWindowGTK::GTKFreezeWidget(GtkWidget *w)
4621 {
4622 if ( !w || !gtk_widget_get_has_window(w) )
4623 return; // window-less widget, cannot be frozen
4624
4625 GdkWindow* window = gtk_widget_get_window(w);
4626 if (window == NULL)
4627 {
4628 // we can't thaw unrealized widgets because they don't have GdkWindow,
4629 // so set it up to be done immediately after realization:
4630 g_signal_connect_after
4631 (
4632 w,
4633 "realize",
4634 G_CALLBACK(wx_frozen_widget_realize),
4635 this
4636 );
4637 return;
4638 }
4639
4640 if (w == m_wxwindow)
4641 window = GTKGetDrawingWindow();
4642 gdk_window_freeze_updates(window);
4643 }
4644
4645 void wxWindowGTK::GTKThawWidget(GtkWidget *w)
4646 {
4647 if ( !w || !gtk_widget_get_has_window(w) )
4648 return; // window-less widget, cannot be frozen
4649
4650 GdkWindow* window = gtk_widget_get_window(w);
4651 if (window == NULL)
4652 {
4653 // the widget wasn't realized yet, no need to thaw
4654 g_signal_handlers_disconnect_by_func
4655 (
4656 w,
4657 (void*)wx_frozen_widget_realize,
4658 this
4659 );
4660 return;
4661 }
4662
4663 if (w == m_wxwindow)
4664 window = GTKGetDrawingWindow();
4665 gdk_window_thaw_updates(window);
4666 }
4667
4668 void wxWindowGTK::DoFreeze()
4669 {
4670 GTKFreezeWidget(m_widget);
4671 if ( m_wxwindow && m_widget != m_wxwindow )
4672 GTKFreezeWidget(m_wxwindow);
4673 }
4674
4675 void wxWindowGTK::DoThaw()
4676 {
4677 GTKThawWidget(m_widget);
4678 if ( m_wxwindow && m_widget != m_wxwindow )
4679 GTKThawWidget(m_wxwindow);
4680 }
wxWidgets (Impactor)