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[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 extern "C" {
891 static gboolean
892 gtk_window_key_press_callback( GtkWidget *WXUNUSED(widget),
893 GdkEventKey *gdk_event,
894 wxWindow *win )
895 {
896 if (!win->m_hasVMT)
897 return FALSE;
898 if (g_blockEventsOnDrag)
899 return FALSE;
900
901 wxKeyEvent event( wxEVT_KEY_DOWN );
902 bool ret = false;
903 bool return_after_IM = false;
904
905 if( wxTranslateGTKKeyEventToWx(event, win, gdk_event) )
906 {
907 // Send the CHAR_HOOK event first
908 if ( SendCharHookEvent(event, win) )
909 {
910 // Don't do anything at all with this event any more.
911 return TRUE;
912 }
913
914 // Emit KEY_DOWN event
915 ret = win->HandleWindowEvent( event );
916 }
917 else
918 {
919 // Return after IM processing as we cannot do
920 // anything with it anyhow.
921 return_after_IM = true;
922 }
923
924 if (!ret && win->m_imData)
925 {
926 win->m_imData->lastKeyEvent = gdk_event;
927
928 // We should let GTK+ IM filter key event first. According to GTK+ 2.0 API
929 // docs, if IM filter returns true, no further processing should be done.
930 // we should send the key_down event anyway.
931 bool intercepted_by_IM = gtk_im_context_filter_keypress(win->m_imData->context, gdk_event);
932 win->m_imData->lastKeyEvent = NULL;
933 if (intercepted_by_IM)
934 {
935 wxLogTrace(TRACE_KEYS, wxT("Key event intercepted by IM"));
936 return TRUE;
937 }
938 }
939
940 if (return_after_IM)
941 return FALSE;
942
943 #if wxUSE_ACCEL
944 if (!ret)
945 {
946 wxWindowGTK *ancestor = win;
947 while (ancestor)
948 {
949 int command = ancestor->GetAcceleratorTable()->GetCommand( event );
950 if (command != -1)
951 {
952 wxCommandEvent menu_event( wxEVT_COMMAND_MENU_SELECTED, command );
953 ret = ancestor->HandleWindowEvent( menu_event );
954
955 if ( !ret )
956 {
957 // if the accelerator wasn't handled as menu event, try
958 // it as button click (for compatibility with other
959 // platforms):
960 wxCommandEvent button_event( wxEVT_COMMAND_BUTTON_CLICKED, command );
961 ret = ancestor->HandleWindowEvent( button_event );
962 }
963
964 break;
965 }
966 if (ancestor->IsTopLevel())
967 break;
968 ancestor = ancestor->GetParent();
969 }
970 }
971 #endif // wxUSE_ACCEL
972
973 // Only send wxEVT_CHAR event if not processed yet. Thus, ALT-x
974 // will only be sent if it is not in an accelerator table.
975 if (!ret)
976 {
977 long key_code;
978 KeySym keysym = gdk_event->keyval;
979 // Find key code for EVT_CHAR and EVT_CHAR_HOOK events
980 key_code = wxTranslateKeySymToWXKey(keysym, true /* isChar */);
981 if ( !key_code )
982 {
983 if ( wxIsAsciiKeysym(keysym) )
984 {
985 // ASCII key
986 key_code = (unsigned char)keysym;
987 }
988 // gdk_event->string is actually deprecated
989 else if ( gdk_event->length == 1 )
990 {
991 key_code = (unsigned char)gdk_event->string[0];
992 }
993 }
994
995 if ( key_code )
996 {
997 wxKeyEvent eventChar(wxEVT_CHAR, event);
998
999 wxLogTrace(TRACE_KEYS, wxT("Char event: %ld"), key_code);
1000
1001 eventChar.m_keyCode = key_code;
1002
1003 AdjustCharEventKeyCodes(eventChar);
1004
1005 ret = win->HandleWindowEvent(eventChar);
1006 }
1007 }
1008
1009 return ret;
1010 }
1011 }
1012
1013 extern "C" {
1014 static void
1015 gtk_wxwindow_commit_cb (GtkIMContext * WXUNUSED(context),
1016 const gchar *str,
1017 wxWindow *window)
1018 {
1019 wxKeyEvent event( wxEVT_CHAR );
1020
1021 // take modifiers, cursor position, timestamp etc. from the last
1022 // key_press_event that was fed into Input Method:
1023 if (window->m_imData->lastKeyEvent)
1024 {
1025 wxFillOtherKeyEventFields(event,
1026 window, window->m_imData->lastKeyEvent);
1027 }
1028 else
1029 {
1030 event.SetEventObject( window );
1031 }
1032
1033 const wxString data(wxGTK_CONV_BACK_SYS(str));
1034 if( data.empty() )
1035 return;
1036
1037 for( wxString::const_iterator pstr = data.begin(); pstr != data.end(); ++pstr )
1038 {
1039 #if wxUSE_UNICODE
1040 event.m_uniChar = *pstr;
1041 // Backward compatible for ISO-8859-1
1042 event.m_keyCode = *pstr < 256 ? event.m_uniChar : 0;
1043 wxLogTrace(TRACE_KEYS, wxT("IM sent character '%c'"), event.m_uniChar);
1044 #else
1045 event.m_keyCode = (char)*pstr;
1046 #endif // wxUSE_UNICODE
1047
1048 AdjustCharEventKeyCodes(event);
1049
1050 window->HandleWindowEvent(event);
1051 }
1052 }
1053 }
1054
1055
1056 //-----------------------------------------------------------------------------
1057 // "key_release_event" from any window
1058 //-----------------------------------------------------------------------------
1059
1060 extern "C" {
1061 static gboolean
1062 gtk_window_key_release_callback( GtkWidget * WXUNUSED(widget),
1063 GdkEventKey *gdk_event,
1064 wxWindowGTK *win )
1065 {
1066 if (!win->m_hasVMT)
1067 return FALSE;
1068
1069 if (g_blockEventsOnDrag)
1070 return FALSE;
1071
1072 wxKeyEvent event( wxEVT_KEY_UP );
1073 if ( !wxTranslateGTKKeyEventToWx(event, win, gdk_event) )
1074 {
1075 // unknown key pressed, ignore (the event would be useless anyhow)
1076 return FALSE;
1077 }
1078
1079 return win->GTKProcessEvent(event);
1080 }
1081 }
1082
1083 //-----------------------------------------------------------------------------
1084 // key and mouse events, after, from m_widget
1085 //-----------------------------------------------------------------------------
1086
1087 extern "C" {
1088 static gboolean key_and_mouse_event_after(GtkWidget* widget, GdkEventKey*, wxWindow*)
1089 {
1090 // If a widget does not handle a key or mouse event, GTK+ sends it up the
1091 // parent chain until it is handled. These events are not supposed to
1092 // propagate in wxWidgets, so prevent it unless widget is in a native
1093 // container.
1094 return WX_IS_PIZZA(gtk_widget_get_parent(widget));
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 wxWindowGTK *child = 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 wxCOMMON_CALLBACK_PROLOGUE(gdk_event, win);
1283
1284 g_lastButtonNumber = gdk_event->button;
1285
1286 // GDK sends surplus button down events
1287 // before a double click event. We
1288 // need to filter these out.
1289 if ((gdk_event->type == GDK_BUTTON_PRESS) && (win->m_wxwindow))
1290 {
1291 GdkEvent *peek_event = gdk_event_peek();
1292 if (peek_event)
1293 {
1294 if ((peek_event->type == GDK_2BUTTON_PRESS) ||
1295 (peek_event->type == GDK_3BUTTON_PRESS))
1296 {
1297 gdk_event_free( peek_event );
1298 return TRUE;
1299 }
1300 else
1301 {
1302 gdk_event_free( peek_event );
1303 }
1304 }
1305 }
1306
1307 wxEventType event_type = wxEVT_NULL;
1308
1309 if ( gdk_event->type == GDK_2BUTTON_PRESS &&
1310 gdk_event->button >= 1 && gdk_event->button <= 3 )
1311 {
1312 // Reset GDK internal timestamp variables in order to disable GDK
1313 // triple click events. GDK will then next time believe no button has
1314 // been clicked just before, and send a normal button click event.
1315 GdkDisplay* display = gtk_widget_get_display (widget);
1316 display->button_click_time[1] = 0;
1317 display->button_click_time[0] = 0;
1318 }
1319
1320 if (gdk_event->button == 1)
1321 {
1322 // note that GDK generates triple click events which are not supported
1323 // by wxWidgets but still have to be passed to the app as otherwise
1324 // clicks would simply go missing
1325 switch (gdk_event->type)
1326 {
1327 // we shouldn't get triple clicks at all for GTK2 because we
1328 // suppress them artificially using the code above but we still
1329 // should map them to something for GTK1 and not just ignore them
1330 // as this would lose clicks
1331 case GDK_3BUTTON_PRESS: // we could also map this to DCLICK...
1332 case GDK_BUTTON_PRESS:
1333 event_type = wxEVT_LEFT_DOWN;
1334 break;
1335
1336 case GDK_2BUTTON_PRESS:
1337 event_type = wxEVT_LEFT_DCLICK;
1338 break;
1339
1340 default:
1341 // just to silence gcc warnings
1342 ;
1343 }
1344 }
1345 else if (gdk_event->button == 2)
1346 {
1347 switch (gdk_event->type)
1348 {
1349 case GDK_3BUTTON_PRESS:
1350 case GDK_BUTTON_PRESS:
1351 event_type = wxEVT_MIDDLE_DOWN;
1352 break;
1353
1354 case GDK_2BUTTON_PRESS:
1355 event_type = wxEVT_MIDDLE_DCLICK;
1356 break;
1357
1358 default:
1359 ;
1360 }
1361 }
1362 else if (gdk_event->button == 3)
1363 {
1364 switch (gdk_event->type)
1365 {
1366 case GDK_3BUTTON_PRESS:
1367 case GDK_BUTTON_PRESS:
1368 event_type = wxEVT_RIGHT_DOWN;
1369 break;
1370
1371 case GDK_2BUTTON_PRESS:
1372 event_type = wxEVT_RIGHT_DCLICK;
1373 break;
1374
1375 default:
1376 ;
1377 }
1378 }
1379
1380 else if (gdk_event->button == 8)
1381 {
1382 switch (gdk_event->type)
1383 {
1384 case GDK_3BUTTON_PRESS:
1385 case GDK_BUTTON_PRESS:
1386 event_type = wxEVT_AUX1_DOWN;
1387 break;
1388
1389 case GDK_2BUTTON_PRESS:
1390 event_type = wxEVT_AUX1_DCLICK;
1391 break;
1392
1393 default:
1394 ;
1395 }
1396 }
1397
1398 else if (gdk_event->button == 9)
1399 {
1400 switch (gdk_event->type)
1401 {
1402 case GDK_3BUTTON_PRESS:
1403 case GDK_BUTTON_PRESS:
1404 event_type = wxEVT_AUX2_DOWN;
1405 break;
1406
1407 case GDK_2BUTTON_PRESS:
1408 event_type = wxEVT_AUX2_DCLICK;
1409 break;
1410
1411 default:
1412 ;
1413 }
1414 }
1415
1416 if ( event_type == wxEVT_NULL )
1417 {
1418 // unknown mouse button or click type
1419 return FALSE;
1420 }
1421
1422 g_lastMouseEvent = (GdkEvent*) gdk_event;
1423
1424 wxMouseEvent event( event_type );
1425 InitMouseEvent( win, event, gdk_event );
1426
1427 AdjustEventButtonState(event);
1428
1429 // find the correct window to send the event to: it may be a different one
1430 // from the one which got it at GTK+ level because some controls don't have
1431 // their own X window and thus cannot get any events.
1432 if ( !g_captureWindow )
1433 win = FindWindowForMouseEvent(win, event.m_x, event.m_y);
1434
1435 // reset the event object and id in case win changed.
1436 event.SetEventObject( win );
1437 event.SetId( win->GetId() );
1438
1439 bool ret = win->GTKProcessEvent( event );
1440 g_lastMouseEvent = NULL;
1441 if ( ret )
1442 return TRUE;
1443
1444 if ((event_type == wxEVT_LEFT_DOWN) && !win->IsOfStandardClass() &&
1445 (gs_currentFocus != win) /* && win->IsFocusable() */)
1446 {
1447 win->SetFocus();
1448 }
1449
1450 if (event_type == wxEVT_RIGHT_DOWN)
1451 {
1452 // generate a "context menu" event: this is similar to right mouse
1453 // click under many GUIs except that it is generated differently
1454 // (right up under MSW, ctrl-click under Mac, right down here) and
1455 //
1456 // (a) it's a command event and so is propagated to the parent
1457 // (b) under some ports it can be generated from kbd too
1458 // (c) it uses screen coords (because of (a))
1459 wxContextMenuEvent evtCtx(
1460 wxEVT_CONTEXT_MENU,
1461 win->GetId(),
1462 win->ClientToScreen(event.GetPosition()));
1463 evtCtx.SetEventObject(win);
1464 return win->GTKProcessEvent(evtCtx);
1465 }
1466
1467 return FALSE;
1468 }
1469
1470 //-----------------------------------------------------------------------------
1471 // "button_release_event"
1472 //-----------------------------------------------------------------------------
1473
1474 static gboolean
1475 gtk_window_button_release_callback( GtkWidget *WXUNUSED(widget),
1476 GdkEventButton *gdk_event,
1477 wxWindowGTK *win )
1478 {
1479 wxCOMMON_CALLBACK_PROLOGUE(gdk_event, win);
1480
1481 g_lastButtonNumber = 0;
1482
1483 wxEventType event_type = wxEVT_NULL;
1484
1485 switch (gdk_event->button)
1486 {
1487 case 1:
1488 event_type = wxEVT_LEFT_UP;
1489 break;
1490
1491 case 2:
1492 event_type = wxEVT_MIDDLE_UP;
1493 break;
1494
1495 case 3:
1496 event_type = wxEVT_RIGHT_UP;
1497 break;
1498
1499 case 8:
1500 event_type = wxEVT_AUX1_UP;
1501 break;
1502
1503 case 9:
1504 event_type = wxEVT_AUX2_UP;
1505 break;
1506
1507 default:
1508 // unknown button, don't process
1509 return FALSE;
1510 }
1511
1512 g_lastMouseEvent = (GdkEvent*) gdk_event;
1513
1514 wxMouseEvent event( event_type );
1515 InitMouseEvent( win, event, gdk_event );
1516
1517 AdjustEventButtonState(event);
1518
1519 if ( !g_captureWindow )
1520 win = FindWindowForMouseEvent(win, event.m_x, event.m_y);
1521
1522 // reset the event object and id in case win changed.
1523 event.SetEventObject( win );
1524 event.SetId( win->GetId() );
1525
1526 bool ret = win->GTKProcessEvent(event);
1527
1528 g_lastMouseEvent = NULL;
1529
1530 return ret;
1531 }
1532
1533 //-----------------------------------------------------------------------------
1534 // "motion_notify_event"
1535 //-----------------------------------------------------------------------------
1536
1537 static gboolean
1538 gtk_window_motion_notify_callback( GtkWidget * WXUNUSED(widget),
1539 GdkEventMotion *gdk_event,
1540 wxWindowGTK *win )
1541 {
1542 wxCOMMON_CALLBACK_PROLOGUE(gdk_event, win);
1543
1544 if (gdk_event->is_hint)
1545 {
1546 int x = 0;
1547 int y = 0;
1548 GdkModifierType state;
1549 gdk_window_get_pointer(gdk_event->window, &x, &y, &state);
1550 gdk_event->x = x;
1551 gdk_event->y = y;
1552 }
1553
1554 g_lastMouseEvent = (GdkEvent*) gdk_event;
1555
1556 wxMouseEvent event( wxEVT_MOTION );
1557 InitMouseEvent(win, event, gdk_event);
1558
1559 if ( g_captureWindow )
1560 {
1561 // synthesise a mouse enter or leave event if needed
1562 GdkWindow *winUnderMouse = gdk_window_at_pointer(NULL, NULL);
1563 // This seems to be necessary and actually been added to
1564 // GDK itself in version 2.0.X
1565 gdk_flush();
1566
1567 bool hasMouse = winUnderMouse == gdk_event->window;
1568 if ( hasMouse != g_captureWindowHasMouse )
1569 {
1570 // the mouse changed window
1571 g_captureWindowHasMouse = hasMouse;
1572
1573 wxMouseEvent eventM(g_captureWindowHasMouse ? wxEVT_ENTER_WINDOW
1574 : wxEVT_LEAVE_WINDOW);
1575 InitMouseEvent(win, eventM, gdk_event);
1576 eventM.SetEventObject(win);
1577 win->GTKProcessEvent(eventM);
1578 }
1579 }
1580 else // no capture
1581 {
1582 win = FindWindowForMouseEvent(win, event.m_x, event.m_y);
1583
1584 // reset the event object and id in case win changed.
1585 event.SetEventObject( win );
1586 event.SetId( win->GetId() );
1587 }
1588
1589 if ( !g_captureWindow )
1590 {
1591 wxSetCursorEvent cevent( event.m_x, event.m_y );
1592 if (win->GTKProcessEvent( cevent ))
1593 {
1594 win->SetCursor( cevent.GetCursor() );
1595 }
1596 }
1597
1598 bool ret = win->GTKProcessEvent(event);
1599
1600 g_lastMouseEvent = NULL;
1601
1602 return ret;
1603 }
1604
1605 //-----------------------------------------------------------------------------
1606 // "scroll_event" (mouse wheel event)
1607 //-----------------------------------------------------------------------------
1608
1609 static gboolean
1610 window_scroll_event_hscrollbar(GtkWidget*, GdkEventScroll* gdk_event, wxWindow* win)
1611 {
1612 if (gdk_event->direction != GDK_SCROLL_LEFT &&
1613 gdk_event->direction != GDK_SCROLL_RIGHT)
1614 {
1615 return false;
1616 }
1617
1618 GtkRange *range = win->m_scrollBar[wxWindow::ScrollDir_Horz];
1619
1620 if (range && gtk_widget_get_visible(GTK_WIDGET(range)))
1621 {
1622 GtkAdjustment* adj = gtk_range_get_adjustment(range);
1623 double delta = gtk_adjustment_get_step_increment(adj) * 3;
1624 if (gdk_event->direction == GDK_SCROLL_LEFT)
1625 delta = -delta;
1626
1627 gtk_range_set_value(range, gtk_adjustment_get_value(adj) + delta);
1628
1629 return TRUE;
1630 }
1631
1632 return FALSE;
1633 }
1634
1635 static gboolean
1636 window_scroll_event(GtkWidget*, GdkEventScroll* gdk_event, wxWindow* win)
1637 {
1638 if (gdk_event->direction != GDK_SCROLL_UP &&
1639 gdk_event->direction != GDK_SCROLL_DOWN)
1640 {
1641 return false;
1642 }
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 if (gdk_event->direction == GDK_SCROLL_UP)
1651 event.m_wheelRotation = 120;
1652 else
1653 event.m_wheelRotation = -120;
1654
1655 if (win->GTKProcessEvent(event))
1656 return TRUE;
1657
1658 GtkRange *range = win->m_scrollBar[wxWindow::ScrollDir_Vert];
1659
1660 if (range && gtk_widget_get_visible(GTK_WIDGET(range)))
1661 {
1662 GtkAdjustment* adj = gtk_range_get_adjustment(range);
1663 double delta = gtk_adjustment_get_step_increment(adj) * 3;
1664 if (gdk_event->direction == GDK_SCROLL_UP)
1665 delta = -delta;
1666
1667 gtk_range_set_value(range, gtk_adjustment_get_value(adj) + delta);
1668
1669 return TRUE;
1670 }
1671
1672 return FALSE;
1673 }
1674
1675 //-----------------------------------------------------------------------------
1676 // "popup-menu"
1677 //-----------------------------------------------------------------------------
1678
1679 static gboolean wxgtk_window_popup_menu_callback(GtkWidget*, wxWindowGTK* win)
1680 {
1681 wxContextMenuEvent event(wxEVT_CONTEXT_MENU, win->GetId(), wxPoint(-1, -1));
1682 event.SetEventObject(win);
1683 return win->GTKProcessEvent(event);
1684 }
1685
1686 //-----------------------------------------------------------------------------
1687 // "focus_in_event"
1688 //-----------------------------------------------------------------------------
1689
1690 static gboolean
1691 gtk_window_focus_in_callback( GtkWidget * WXUNUSED(widget),
1692 GdkEventFocus *WXUNUSED(event),
1693 wxWindowGTK *win )
1694 {
1695 return win->GTKHandleFocusIn();
1696 }
1697
1698 //-----------------------------------------------------------------------------
1699 // "focus_out_event"
1700 //-----------------------------------------------------------------------------
1701
1702 static gboolean
1703 gtk_window_focus_out_callback( GtkWidget * WXUNUSED(widget),
1704 GdkEventFocus * WXUNUSED(gdk_event),
1705 wxWindowGTK *win )
1706 {
1707 return win->GTKHandleFocusOut();
1708 }
1709
1710 //-----------------------------------------------------------------------------
1711 // "focus"
1712 //-----------------------------------------------------------------------------
1713
1714 static gboolean
1715 wx_window_focus_callback(GtkWidget *widget,
1716 GtkDirectionType WXUNUSED(direction),
1717 wxWindowGTK *win)
1718 {
1719 // the default handler for focus signal in GtkScrolledWindow sets
1720 // focus to the window itself even if it doesn't accept focus, i.e. has no
1721 // GTK_CAN_FOCUS in its style -- work around this by forcibly preventing
1722 // the signal from reaching gtk_scrolled_window_focus() if we don't have
1723 // any children which might accept focus (we know we don't accept the focus
1724 // ourselves as this signal is only connected in this case)
1725 if ( win->GetChildren().empty() )
1726 g_signal_stop_emission_by_name(widget, "focus");
1727
1728 // we didn't change the focus
1729 return FALSE;
1730 }
1731
1732 //-----------------------------------------------------------------------------
1733 // "enter_notify_event"
1734 //-----------------------------------------------------------------------------
1735
1736 static gboolean
1737 gtk_window_enter_callback( GtkWidget *widget,
1738 GdkEventCrossing *gdk_event,
1739 wxWindowGTK *win )
1740 {
1741 wxCOMMON_CALLBACK_PROLOGUE(gdk_event, win);
1742
1743 // Event was emitted after a grab
1744 if (gdk_event->mode != GDK_CROSSING_NORMAL) return FALSE;
1745
1746 int x = 0;
1747 int y = 0;
1748 GdkModifierType state = (GdkModifierType)0;
1749
1750 gdk_window_get_pointer(gtk_widget_get_window(widget), &x, &y, &state);
1751
1752 wxMouseEvent event( wxEVT_ENTER_WINDOW );
1753 InitMouseEvent(win, event, gdk_event);
1754 wxPoint pt = win->GetClientAreaOrigin();
1755 event.m_x = x + pt.x;
1756 event.m_y = y + pt.y;
1757
1758 if ( !g_captureWindow )
1759 {
1760 wxSetCursorEvent cevent( event.m_x, event.m_y );
1761 if (win->GTKProcessEvent( cevent ))
1762 {
1763 win->SetCursor( cevent.GetCursor() );
1764 }
1765 }
1766
1767 return win->GTKProcessEvent(event);
1768 }
1769
1770 //-----------------------------------------------------------------------------
1771 // "leave_notify_event"
1772 //-----------------------------------------------------------------------------
1773
1774 static gboolean
1775 gtk_window_leave_callback( GtkWidget *widget,
1776 GdkEventCrossing *gdk_event,
1777 wxWindowGTK *win )
1778 {
1779 wxCOMMON_CALLBACK_PROLOGUE(gdk_event, win);
1780
1781 // Event was emitted after an ungrab
1782 if (gdk_event->mode != GDK_CROSSING_NORMAL) return FALSE;
1783
1784 wxMouseEvent event( wxEVT_LEAVE_WINDOW );
1785
1786 int x = 0;
1787 int y = 0;
1788 GdkModifierType state = (GdkModifierType)0;
1789
1790 gdk_window_get_pointer(gtk_widget_get_window(widget), &x, &y, &state);
1791
1792 InitMouseEvent(win, event, gdk_event);
1793
1794 return win->GTKProcessEvent(event);
1795 }
1796
1797 //-----------------------------------------------------------------------------
1798 // "value_changed" from scrollbar
1799 //-----------------------------------------------------------------------------
1800
1801 static void
1802 gtk_scrollbar_value_changed(GtkRange* range, wxWindow* win)
1803 {
1804 wxEventType eventType = win->GTKGetScrollEventType(range);
1805 if (eventType != wxEVT_NULL)
1806 {
1807 // Convert scroll event type to scrollwin event type
1808 eventType += wxEVT_SCROLLWIN_TOP - wxEVT_SCROLL_TOP;
1809
1810 // find the scrollbar which generated the event
1811 wxWindowGTK::ScrollDir dir = win->ScrollDirFromRange(range);
1812
1813 // generate the corresponding wx event
1814 const int orient = wxWindow::OrientFromScrollDir(dir);
1815 wxScrollWinEvent event(eventType, win->GetScrollPos(orient), orient);
1816 event.SetEventObject(win);
1817
1818 win->GTKProcessEvent(event);
1819 }
1820 }
1821
1822 //-----------------------------------------------------------------------------
1823 // "button_press_event" from scrollbar
1824 //-----------------------------------------------------------------------------
1825
1826 static gboolean
1827 gtk_scrollbar_button_press_event(GtkRange*, GdkEventButton*, wxWindow* win)
1828 {
1829 g_blockEventsOnScroll = true;
1830 win->m_mouseButtonDown = true;
1831
1832 return false;
1833 }
1834
1835 //-----------------------------------------------------------------------------
1836 // "event_after" from scrollbar
1837 //-----------------------------------------------------------------------------
1838
1839 static void
1840 gtk_scrollbar_event_after(GtkRange* range, GdkEvent* event, wxWindow* win)
1841 {
1842 if (event->type == GDK_BUTTON_RELEASE)
1843 {
1844 g_signal_handlers_block_by_func(range, (void*)gtk_scrollbar_event_after, win);
1845
1846 const int orient = wxWindow::OrientFromScrollDir(
1847 win->ScrollDirFromRange(range));
1848 wxScrollWinEvent evt(wxEVT_SCROLLWIN_THUMBRELEASE,
1849 win->GetScrollPos(orient), orient);
1850 evt.SetEventObject(win);
1851 win->GTKProcessEvent(evt);
1852 }
1853 }
1854
1855 //-----------------------------------------------------------------------------
1856 // "button_release_event" from scrollbar
1857 //-----------------------------------------------------------------------------
1858
1859 static gboolean
1860 gtk_scrollbar_button_release_event(GtkRange* range, GdkEventButton*, wxWindow* win)
1861 {
1862 g_blockEventsOnScroll = false;
1863 win->m_mouseButtonDown = false;
1864 // If thumb tracking
1865 if (win->m_isScrolling)
1866 {
1867 win->m_isScrolling = false;
1868 // Hook up handler to send thumb release event after this emission is finished.
1869 // To allow setting scroll position from event handler, sending event must
1870 // be deferred until after the GtkRange handler for this signal has run
1871 g_signal_handlers_unblock_by_func(range, (void*)gtk_scrollbar_event_after, win);
1872 }
1873
1874 return false;
1875 }
1876
1877 //-----------------------------------------------------------------------------
1878 // "realize" from m_widget
1879 //-----------------------------------------------------------------------------
1880
1881 static void
1882 gtk_window_realized_callback(GtkWidget* WXUNUSED(widget), wxWindowGTK* win)
1883 {
1884 win->GTKHandleRealized();
1885 }
1886
1887 //-----------------------------------------------------------------------------
1888 // "unrealize" from m_wxwindow
1889 //-----------------------------------------------------------------------------
1890
1891 static void unrealize(GtkWidget*, wxWindowGTK* win)
1892 {
1893 if (win->m_imData)
1894 gtk_im_context_set_client_window(win->m_imData->context, NULL);
1895 }
1896
1897 //-----------------------------------------------------------------------------
1898 // "size_allocate" from m_wxwindow or m_widget
1899 //-----------------------------------------------------------------------------
1900
1901 static void
1902 size_allocate(GtkWidget*, GtkAllocation* alloc, wxWindow* win)
1903 {
1904 int w = alloc->width;
1905 int h = alloc->height;
1906 if (win->m_wxwindow)
1907 {
1908 int border_x, border_y;
1909 WX_PIZZA(win->m_wxwindow)->get_border_widths(border_x, border_y);
1910 w -= 2 * border_x;
1911 h -= 2 * border_y;
1912 if (w < 0) w = 0;
1913 if (h < 0) h = 0;
1914 }
1915 if (win->m_oldClientWidth != w || win->m_oldClientHeight != h)
1916 {
1917 win->m_oldClientWidth = w;
1918 win->m_oldClientHeight = h;
1919 // this callback can be connected to m_wxwindow,
1920 // so always get size from m_widget->allocation
1921 GtkAllocation a;
1922 gtk_widget_get_allocation(win->m_widget, &a);
1923 win->m_width = a.width;
1924 win->m_height = a.height;
1925 if (!win->m_nativeSizeEvent)
1926 {
1927 wxSizeEvent event(win->GetSize(), win->GetId());
1928 event.SetEventObject(win);
1929 win->GTKProcessEvent(event);
1930 }
1931 }
1932 }
1933
1934 //-----------------------------------------------------------------------------
1935 // "grab_broken"
1936 //-----------------------------------------------------------------------------
1937
1938 #if GTK_CHECK_VERSION(2, 8, 0)
1939 static gboolean
1940 gtk_window_grab_broken( GtkWidget*,
1941 GdkEventGrabBroken *event,
1942 wxWindow *win )
1943 {
1944 // Mouse capture has been lost involuntarily, notify the application
1945 if(!event->keyboard && wxWindow::GetCapture() == win)
1946 {
1947 wxMouseCaptureLostEvent evt( win->GetId() );
1948 evt.SetEventObject( win );
1949 win->HandleWindowEvent( evt );
1950 }
1951 return false;
1952 }
1953 #endif
1954
1955 //-----------------------------------------------------------------------------
1956 // "style_set"
1957 //-----------------------------------------------------------------------------
1958
1959 static
1960 void gtk_window_style_set_callback( GtkWidget *WXUNUSED(widget),
1961 GtkStyle *previous_style,
1962 wxWindow* win )
1963 {
1964 if (win && previous_style)
1965 {
1966 if (win->IsTopLevel())
1967 {
1968 wxSysColourChangedEvent event;
1969 event.SetEventObject(win);
1970 win->GTKProcessEvent(event);
1971 }
1972 else
1973 {
1974 // Border width could change, which will change client size.
1975 // Make sure size event occurs for this
1976 win->m_oldClientWidth = 0;
1977 }
1978 }
1979 }
1980
1981 } // extern "C"
1982
1983 void wxWindowGTK::GTKHandleRealized()
1984 {
1985 if (m_imData)
1986 {
1987 gtk_im_context_set_client_window
1988 (
1989 m_imData->context,
1990 m_wxwindow ? GTKGetDrawingWindow()
1991 : gtk_widget_get_window(m_widget)
1992 );
1993 }
1994
1995 // Use composited window if background is transparent, if supported.
1996 if (m_backgroundStyle == wxBG_STYLE_TRANSPARENT)
1997 {
1998 #if wxGTK_HAS_COMPOSITING_SUPPORT
1999 if (IsTransparentBackgroundSupported())
2000 {
2001 GdkWindow* const window = GTKGetDrawingWindow();
2002 if (window)
2003 gdk_window_set_composited(window, true);
2004 }
2005 else
2006 #endif // wxGTK_HAS_COMPOSITING_SUPPORT
2007 {
2008 // We revert to erase mode if transparency is not supported
2009 m_backgroundStyle = wxBG_STYLE_ERASE;
2010 }
2011 }
2012
2013
2014 // We cannot set colours and fonts before the widget
2015 // been realized, so we do this directly after realization
2016 // or otherwise in idle time
2017
2018 if (m_needsStyleChange)
2019 {
2020 SetBackgroundStyle(GetBackgroundStyle());
2021 m_needsStyleChange = false;
2022 }
2023
2024 wxWindowCreateEvent event(static_cast<wxWindow*>(this));
2025 event.SetEventObject( this );
2026 GTKProcessEvent( event );
2027
2028 GTKUpdateCursor(true, false);
2029 }
2030
2031 // ----------------------------------------------------------------------------
2032 // this wxWindowBase function is implemented here (in platform-specific file)
2033 // because it is static and so couldn't be made virtual
2034 // ----------------------------------------------------------------------------
2035
2036 wxWindow *wxWindowBase::DoFindFocus()
2037 {
2038 wxWindowGTK *focus = gs_pendingFocus ? gs_pendingFocus : gs_currentFocus;
2039 // the cast is necessary when we compile in wxUniversal mode
2040 return static_cast<wxWindow*>(focus);
2041 }
2042
2043 void wxWindowGTK::AddChildGTK(wxWindowGTK* child)
2044 {
2045 wxASSERT_MSG(m_wxwindow, "Cannot add a child to a window without a client area");
2046
2047 // the window might have been scrolled already, we
2048 // have to adapt the position
2049 wxPizza* pizza = WX_PIZZA(m_wxwindow);
2050 child->m_x += pizza->m_scroll_x;
2051 child->m_y += pizza->m_scroll_y;
2052
2053 gtk_widget_set_size_request(
2054 child->m_widget, child->m_width, child->m_height);
2055 pizza->put(child->m_widget, child->m_x, child->m_y);
2056 }
2057
2058 //-----------------------------------------------------------------------------
2059 // global functions
2060 //-----------------------------------------------------------------------------
2061
2062 wxWindow *wxGetActiveWindow()
2063 {
2064 return wxWindow::FindFocus();
2065 }
2066
2067
2068 wxMouseState wxGetMouseState()
2069 {
2070 wxMouseState ms;
2071
2072 gint x;
2073 gint y;
2074 GdkModifierType mask;
2075
2076 gdk_window_get_pointer(NULL, &x, &y, &mask);
2077
2078 ms.SetX(x);
2079 ms.SetY(y);
2080 ms.SetLeftDown((mask & GDK_BUTTON1_MASK) != 0);
2081 ms.SetMiddleDown((mask & GDK_BUTTON2_MASK) != 0);
2082 ms.SetRightDown((mask & GDK_BUTTON3_MASK) != 0);
2083 // see the comment in InitMouseEvent()
2084 ms.SetAux1Down((mask & GDK_BUTTON4_MASK) != 0);
2085 ms.SetAux2Down((mask & GDK_BUTTON5_MASK) != 0);
2086
2087 ms.SetControlDown((mask & GDK_CONTROL_MASK) != 0);
2088 ms.SetShiftDown((mask & GDK_SHIFT_MASK) != 0);
2089 ms.SetAltDown((mask & GDK_MOD1_MASK) != 0);
2090 ms.SetMetaDown((mask & GDK_META_MASK) != 0);
2091
2092 return ms;
2093 }
2094
2095 //-----------------------------------------------------------------------------
2096 // wxWindowGTK
2097 //-----------------------------------------------------------------------------
2098
2099 // in wxUniv/MSW this class is abstract because it doesn't have DoPopupMenu()
2100 // method
2101 #ifdef __WXUNIVERSAL__
2102 IMPLEMENT_ABSTRACT_CLASS(wxWindowGTK, wxWindowBase)
2103 #endif // __WXUNIVERSAL__
2104
2105 void wxWindowGTK::Init()
2106 {
2107 // GTK specific
2108 m_widget = NULL;
2109 m_wxwindow = NULL;
2110 m_focusWidget = NULL;
2111
2112 // position/size
2113 m_x = 0;
2114 m_y = 0;
2115 m_width = 0;
2116 m_height = 0;
2117
2118 m_hasVMT = false;
2119
2120 m_showOnIdle = false;
2121
2122 m_noExpose = false;
2123 m_nativeSizeEvent = false;
2124
2125 m_isScrolling = false;
2126 m_mouseButtonDown = false;
2127
2128 // initialize scrolling stuff
2129 for ( int dir = 0; dir < ScrollDir_Max; dir++ )
2130 {
2131 m_scrollBar[dir] = NULL;
2132 m_scrollPos[dir] = 0;
2133 }
2134
2135 m_oldClientWidth =
2136 m_oldClientHeight = 0;
2137
2138 m_clipPaintRegion = false;
2139
2140 m_needsStyleChange = false;
2141
2142 m_cursor = *wxSTANDARD_CURSOR;
2143
2144 m_imData = NULL;
2145 m_dirtyTabOrder = false;
2146 }
2147
2148 wxWindowGTK::wxWindowGTK()
2149 {
2150 Init();
2151 }
2152
2153 wxWindowGTK::wxWindowGTK( wxWindow *parent,
2154 wxWindowID id,
2155 const wxPoint &pos,
2156 const wxSize &size,
2157 long style,
2158 const wxString &name )
2159 {
2160 Init();
2161
2162 Create( parent, id, pos, size, style, name );
2163 }
2164
2165 bool wxWindowGTK::Create( wxWindow *parent,
2166 wxWindowID id,
2167 const wxPoint &pos,
2168 const wxSize &size,
2169 long style,
2170 const wxString &name )
2171 {
2172 // Get default border
2173 wxBorder border = GetBorder(style);
2174
2175 style &= ~wxBORDER_MASK;
2176 style |= border;
2177
2178 if (!PreCreation( parent, pos, size ) ||
2179 !CreateBase( parent, id, pos, size, style, wxDefaultValidator, name ))
2180 {
2181 wxFAIL_MSG( wxT("wxWindowGTK creation failed") );
2182 return false;
2183 }
2184
2185 // We should accept the native look
2186 #if 0
2187 GtkScrolledWindowClass *scroll_class = GTK_SCROLLED_WINDOW_CLASS( GTK_OBJECT_GET_CLASS(m_widget) );
2188 scroll_class->scrollbar_spacing = 0;
2189 #endif
2190
2191
2192 m_wxwindow = wxPizza::New(m_windowStyle);
2193 #ifndef __WXUNIVERSAL__
2194 if (HasFlag(wxPizza::BORDER_STYLES))
2195 {
2196 g_signal_connect(m_wxwindow, "parent_set",
2197 G_CALLBACK(parent_set), this);
2198 }
2199 #endif
2200 if (!HasFlag(wxHSCROLL) && !HasFlag(wxVSCROLL))
2201 m_widget = m_wxwindow;
2202 else
2203 {
2204 m_widget = gtk_scrolled_window_new( NULL, NULL );
2205
2206 GtkScrolledWindow *scrolledWindow = GTK_SCROLLED_WINDOW(m_widget);
2207
2208 // There is a conflict with default bindings at GTK+
2209 // level between scrolled windows and notebooks both of which want to use
2210 // Ctrl-PageUp/Down: scrolled windows for scrolling in the horizontal
2211 // direction and notebooks for changing pages -- we decide that if we don't
2212 // have wxHSCROLL style we can safely sacrifice horizontal scrolling if it
2213 // means we can get working keyboard navigation in notebooks
2214 if ( !HasFlag(wxHSCROLL) )
2215 {
2216 GtkBindingSet *
2217 bindings = gtk_binding_set_by_class(G_OBJECT_GET_CLASS(m_widget));
2218 if ( bindings )
2219 {
2220 gtk_binding_entry_remove(bindings, GDK_Page_Up, GDK_CONTROL_MASK);
2221 gtk_binding_entry_remove(bindings, GDK_Page_Down, GDK_CONTROL_MASK);
2222 }
2223 }
2224
2225 if (HasFlag(wxALWAYS_SHOW_SB))
2226 {
2227 gtk_scrolled_window_set_policy( scrolledWindow, GTK_POLICY_ALWAYS, GTK_POLICY_ALWAYS );
2228 }
2229 else
2230 {
2231 gtk_scrolled_window_set_policy( scrolledWindow, GTK_POLICY_AUTOMATIC, GTK_POLICY_AUTOMATIC );
2232 }
2233
2234 m_scrollBar[ScrollDir_Horz] = GTK_RANGE(gtk_scrolled_window_get_hscrollbar(scrolledWindow));
2235 m_scrollBar[ScrollDir_Vert] = GTK_RANGE(gtk_scrolled_window_get_vscrollbar(scrolledWindow));
2236 if (GetLayoutDirection() == wxLayout_RightToLeft)
2237 gtk_range_set_inverted( m_scrollBar[ScrollDir_Horz], TRUE );
2238
2239 gtk_container_add( GTK_CONTAINER(m_widget), m_wxwindow );
2240
2241 // connect various scroll-related events
2242 for ( int dir = 0; dir < ScrollDir_Max; dir++ )
2243 {
2244 // these handlers block mouse events to any window during scrolling
2245 // such as motion events and prevent GTK and wxWidgets from fighting
2246 // over where the slider should be
2247 g_signal_connect(m_scrollBar[dir], "button_press_event",
2248 G_CALLBACK(gtk_scrollbar_button_press_event), this);
2249 g_signal_connect(m_scrollBar[dir], "button_release_event",
2250 G_CALLBACK(gtk_scrollbar_button_release_event), this);
2251
2252 gulong handler_id = g_signal_connect(m_scrollBar[dir], "event_after",
2253 G_CALLBACK(gtk_scrollbar_event_after), this);
2254 g_signal_handler_block(m_scrollBar[dir], handler_id);
2255
2256 // these handlers get notified when scrollbar slider moves
2257 g_signal_connect_after(m_scrollBar[dir], "value_changed",
2258 G_CALLBACK(gtk_scrollbar_value_changed), this);
2259 }
2260
2261 gtk_widget_show( m_wxwindow );
2262 }
2263 g_object_ref(m_widget);
2264
2265 if (m_parent)
2266 m_parent->DoAddChild( this );
2267
2268 m_focusWidget = m_wxwindow;
2269
2270 SetCanFocus(AcceptsFocus());
2271
2272 PostCreation();
2273
2274 return true;
2275 }
2276
2277 wxWindowGTK::~wxWindowGTK()
2278 {
2279 SendDestroyEvent();
2280
2281 if (gs_currentFocus == this)
2282 gs_currentFocus = NULL;
2283 if (gs_pendingFocus == this)
2284 gs_pendingFocus = NULL;
2285
2286 if ( gs_deferredFocusOut == this )
2287 gs_deferredFocusOut = NULL;
2288
2289 m_hasVMT = false;
2290
2291 // destroy children before destroying this window itself
2292 DestroyChildren();
2293
2294 // unhook focus handlers to prevent stray events being
2295 // propagated to this (soon to be) dead object
2296 if (m_focusWidget != NULL)
2297 {
2298 g_signal_handlers_disconnect_by_func (m_focusWidget,
2299 (gpointer) gtk_window_focus_in_callback,
2300 this);
2301 g_signal_handlers_disconnect_by_func (m_focusWidget,
2302 (gpointer) gtk_window_focus_out_callback,
2303 this);
2304 }
2305
2306 if (m_widget)
2307 Show( false );
2308
2309 // delete before the widgets to avoid a crash on solaris
2310 delete m_imData;
2311 m_imData = NULL;
2312
2313 // avoid problem with GTK+ 2.18 where a frozen window causes the whole
2314 // TLW to be frozen, and if the window is then destroyed, nothing ever
2315 // gets painted again
2316 if (IsFrozen())
2317 DoThaw();
2318
2319 if (m_widget)
2320 {
2321 // Note that gtk_widget_destroy() does not destroy the widget, it just
2322 // emits the "destroy" signal. The widget is not actually destroyed
2323 // until its reference count drops to zero.
2324 gtk_widget_destroy(m_widget);
2325 // Release our reference, should be the last one
2326 g_object_unref(m_widget);
2327 m_widget = NULL;
2328 }
2329 m_wxwindow = NULL;
2330 }
2331
2332 bool wxWindowGTK::PreCreation( wxWindowGTK *parent, const wxPoint &pos, const wxSize &size )
2333 {
2334 if ( GTKNeedsParent() )
2335 {
2336 wxCHECK_MSG( parent, false, wxT("Must have non-NULL parent") );
2337 }
2338
2339 // Use either the given size, or the default if -1 is given.
2340 // See wxWindowBase for these functions.
2341 m_width = WidthDefault(size.x) ;
2342 m_height = HeightDefault(size.y);
2343
2344 if (pos != wxDefaultPosition)
2345 {
2346 m_x = pos.x;
2347 m_y = pos.y;
2348 }
2349
2350 return true;
2351 }
2352
2353 void wxWindowGTK::PostCreation()
2354 {
2355 wxASSERT_MSG( (m_widget != NULL), wxT("invalid window") );
2356
2357 #if wxGTK_HAS_COMPOSITING_SUPPORT
2358 // Set RGBA visual as soon as possible to minimize the possibility that
2359 // somebody uses the wrong one.
2360 if ( m_backgroundStyle == wxBG_STYLE_TRANSPARENT &&
2361 IsTransparentBackgroundSupported() )
2362 {
2363 GdkScreen *screen = gtk_widget_get_screen (m_widget);
2364
2365 GdkColormap *rgba_colormap = gdk_screen_get_rgba_colormap (screen);
2366
2367 if (rgba_colormap)
2368 gtk_widget_set_colormap(m_widget, rgba_colormap);
2369 }
2370 #endif // wxGTK_HAS_COMPOSITING_SUPPORT
2371
2372 if (m_wxwindow)
2373 {
2374 if (!m_noExpose)
2375 {
2376 // these get reported to wxWidgets -> wxPaintEvent
2377
2378 g_signal_connect (m_wxwindow, "expose_event",
2379 G_CALLBACK (gtk_window_expose_callback), this);
2380
2381 if (GetLayoutDirection() == wxLayout_LeftToRight)
2382 gtk_widget_set_redraw_on_allocate(m_wxwindow, HasFlag(wxFULL_REPAINT_ON_RESIZE));
2383 }
2384
2385 // Create input method handler
2386 m_imData = new wxGtkIMData;
2387
2388 // Cannot handle drawing preedited text yet
2389 gtk_im_context_set_use_preedit( m_imData->context, FALSE );
2390
2391 g_signal_connect (m_imData->context, "commit",
2392 G_CALLBACK (gtk_wxwindow_commit_cb), this);
2393 g_signal_connect(m_wxwindow, "unrealize", G_CALLBACK(unrealize), this);
2394 }
2395
2396 // focus handling
2397
2398 if (!GTK_IS_WINDOW(m_widget))
2399 {
2400 if (m_focusWidget == NULL)
2401 m_focusWidget = m_widget;
2402
2403 if (m_wxwindow)
2404 {
2405 g_signal_connect (m_focusWidget, "focus_in_event",
2406 G_CALLBACK (gtk_window_focus_in_callback), this);
2407 g_signal_connect (m_focusWidget, "focus_out_event",
2408 G_CALLBACK (gtk_window_focus_out_callback), this);
2409 }
2410 else
2411 {
2412 g_signal_connect_after (m_focusWidget, "focus_in_event",
2413 G_CALLBACK (gtk_window_focus_in_callback), this);
2414 g_signal_connect_after (m_focusWidget, "focus_out_event",
2415 G_CALLBACK (gtk_window_focus_out_callback), this);
2416 }
2417 }
2418
2419 if ( !AcceptsFocusFromKeyboard() )
2420 {
2421 SetCanFocus(false);
2422
2423 g_signal_connect(m_widget, "focus",
2424 G_CALLBACK(wx_window_focus_callback), this);
2425 }
2426
2427 // connect to the various key and mouse handlers
2428
2429 GtkWidget *connect_widget = GetConnectWidget();
2430
2431 ConnectWidget( connect_widget );
2432
2433 // connect handler to prevent events from propagating up parent chain
2434 g_signal_connect_after(m_widget,
2435 "key_press_event", G_CALLBACK(key_and_mouse_event_after), this);
2436 g_signal_connect_after(m_widget,
2437 "key_release_event", G_CALLBACK(key_and_mouse_event_after), this);
2438 g_signal_connect_after(m_widget,
2439 "button_press_event", G_CALLBACK(key_and_mouse_event_after), this);
2440 g_signal_connect_after(m_widget,
2441 "button_release_event", G_CALLBACK(key_and_mouse_event_after), this);
2442 g_signal_connect_after(m_widget,
2443 "motion_notify_event", G_CALLBACK(key_and_mouse_event_after), this);
2444
2445 // We cannot set colours, fonts and cursors before the widget has been
2446 // realized, so we do this directly after realization -- unless the widget
2447 // was in fact realized already.
2448 if ( gtk_widget_get_realized(connect_widget) )
2449 {
2450 gtk_window_realized_callback(connect_widget, this);
2451 }
2452 else
2453 {
2454 g_signal_connect (connect_widget, "realize",
2455 G_CALLBACK (gtk_window_realized_callback), this);
2456 }
2457
2458 if (!IsTopLevel())
2459 {
2460 g_signal_connect(m_wxwindow ? m_wxwindow : m_widget, "size_allocate",
2461 G_CALLBACK(size_allocate), this);
2462 }
2463
2464 #if GTK_CHECK_VERSION(2, 8, 0)
2465 if ( gtk_check_version(2,8,0) == NULL )
2466 {
2467 // Make sure we can notify the app when mouse capture is lost
2468 if ( m_wxwindow )
2469 {
2470 g_signal_connect (m_wxwindow, "grab_broken_event",
2471 G_CALLBACK (gtk_window_grab_broken), this);
2472 }
2473
2474 if ( connect_widget != m_wxwindow )
2475 {
2476 g_signal_connect (connect_widget, "grab_broken_event",
2477 G_CALLBACK (gtk_window_grab_broken), this);
2478 }
2479 }
2480 #endif // GTK+ >= 2.8
2481
2482 if ( GTKShouldConnectSizeRequest() )
2483 {
2484 // This is needed if we want to add our windows into native
2485 // GTK controls, such as the toolbar. With this callback, the
2486 // toolbar gets to know the correct size (the one set by the
2487 // programmer). Sadly, it misbehaves for wxComboBox.
2488 g_signal_connect (m_widget, "size_request",
2489 G_CALLBACK (wxgtk_window_size_request_callback),
2490 this);
2491 }
2492
2493 InheritAttributes();
2494
2495 m_hasVMT = true;
2496
2497 SetLayoutDirection(wxLayout_Default);
2498
2499 // unless the window was created initially hidden (i.e. Hide() had been
2500 // called before Create()), we should show it at GTK+ level as well
2501 if ( IsShown() )
2502 gtk_widget_show( m_widget );
2503 }
2504
2505 unsigned long
2506 wxWindowGTK::GTKConnectWidget(const char *signal, wxGTKCallback callback)
2507 {
2508 return g_signal_connect(m_widget, signal, callback, this);
2509 }
2510
2511 void wxWindowGTK::ConnectWidget( GtkWidget *widget )
2512 {
2513 g_signal_connect (widget, "key_press_event",
2514 G_CALLBACK (gtk_window_key_press_callback), this);
2515 g_signal_connect (widget, "key_release_event",
2516 G_CALLBACK (gtk_window_key_release_callback), this);
2517 g_signal_connect (widget, "button_press_event",
2518 G_CALLBACK (gtk_window_button_press_callback), this);
2519 g_signal_connect (widget, "button_release_event",
2520 G_CALLBACK (gtk_window_button_release_callback), this);
2521 g_signal_connect (widget, "motion_notify_event",
2522 G_CALLBACK (gtk_window_motion_notify_callback), this);
2523
2524 g_signal_connect (widget, "scroll_event",
2525 G_CALLBACK (window_scroll_event), this);
2526 if (m_scrollBar[ScrollDir_Horz])
2527 g_signal_connect (m_scrollBar[ScrollDir_Horz], "scroll_event",
2528 G_CALLBACK (window_scroll_event_hscrollbar), this);
2529 if (m_scrollBar[ScrollDir_Vert])
2530 g_signal_connect (m_scrollBar[ScrollDir_Vert], "scroll_event",
2531 G_CALLBACK (window_scroll_event), this);
2532
2533 g_signal_connect (widget, "popup_menu",
2534 G_CALLBACK (wxgtk_window_popup_menu_callback), this);
2535 g_signal_connect (widget, "enter_notify_event",
2536 G_CALLBACK (gtk_window_enter_callback), this);
2537 g_signal_connect (widget, "leave_notify_event",
2538 G_CALLBACK (gtk_window_leave_callback), this);
2539
2540 if (m_wxwindow && (IsTopLevel() || HasFlag(wxBORDER_RAISED | wxBORDER_SUNKEN | wxBORDER_THEME)))
2541 g_signal_connect (m_wxwindow, "style_set",
2542 G_CALLBACK (gtk_window_style_set_callback), this);
2543 }
2544
2545 bool wxWindowGTK::Destroy()
2546 {
2547 m_hasVMT = false;
2548
2549 return wxWindowBase::Destroy();
2550 }
2551
2552 void wxWindowGTK::DoMoveWindow(int x, int y, int width, int height)
2553 {
2554 gtk_widget_set_size_request(m_widget, width, height);
2555
2556 // inform the parent to perform the move
2557 wxASSERT_MSG(m_parent && m_parent->m_wxwindow,
2558 "the parent window has no client area?");
2559 WX_PIZZA(m_parent->m_wxwindow)->move(m_widget, x, y);
2560 }
2561
2562 void wxWindowGTK::ConstrainSize()
2563 {
2564 #ifdef __WXGPE__
2565 // GPE's window manager doesn't like size hints at all, esp. when the user
2566 // has to use the virtual keyboard, so don't constrain size there
2567 if (!IsTopLevel())
2568 #endif
2569 {
2570 const wxSize minSize = GetMinSize();
2571 const wxSize maxSize = GetMaxSize();
2572 if (minSize.x > 0 && m_width < minSize.x) m_width = minSize.x;
2573 if (minSize.y > 0 && m_height < minSize.y) m_height = minSize.y;
2574 if (maxSize.x > 0 && m_width > maxSize.x) m_width = maxSize.x;
2575 if (maxSize.y > 0 && m_height > maxSize.y) m_height = maxSize.y;
2576 }
2577 }
2578
2579 void wxWindowGTK::DoSetSize( int x, int y, int width, int height, int sizeFlags )
2580 {
2581 wxASSERT_MSG( (m_widget != NULL), wxT("invalid window") );
2582 wxASSERT_MSG( (m_parent != NULL), wxT("wxWindowGTK::SetSize requires parent.\n") );
2583
2584 if ((sizeFlags & wxSIZE_ALLOW_MINUS_ONE) == 0 && (x == -1 || y == -1))
2585 {
2586 int currentX, currentY;
2587 GetPosition(&currentX, &currentY);
2588 if (x == -1)
2589 x = currentX;
2590 if (y == -1)
2591 y = currentY;
2592 }
2593 AdjustForParentClientOrigin(x, y, sizeFlags);
2594
2595 // calculate the best size if we should auto size the window
2596 if ( ((sizeFlags & wxSIZE_AUTO_WIDTH) && width == -1) ||
2597 ((sizeFlags & wxSIZE_AUTO_HEIGHT) && height == -1) )
2598 {
2599 const wxSize sizeBest = GetBestSize();
2600 if ( (sizeFlags & wxSIZE_AUTO_WIDTH) && width == -1 )
2601 width = sizeBest.x;
2602 if ( (sizeFlags & wxSIZE_AUTO_HEIGHT) && height == -1 )
2603 height = sizeBest.y;
2604 }
2605
2606 const wxSize oldSize(m_width, m_height);
2607 if (width != -1)
2608 m_width = width;
2609 if (height != -1)
2610 m_height = height;
2611
2612 if (m_parent->m_wxwindow)
2613 {
2614 wxPizza* pizza = WX_PIZZA(m_parent->m_wxwindow);
2615 m_x = x + pizza->m_scroll_x;
2616 m_y = y + pizza->m_scroll_y;
2617
2618 int left_border = 0;
2619 int right_border = 0;
2620 int top_border = 0;
2621 int bottom_border = 0;
2622
2623 /* the default button has a border around it */
2624 if (gtk_widget_get_can_default(m_widget))
2625 {
2626 GtkBorder *default_border = NULL;
2627 gtk_widget_style_get( m_widget, "default_border", &default_border, NULL );
2628 if (default_border)
2629 {
2630 left_border += default_border->left;
2631 right_border += default_border->right;
2632 top_border += default_border->top;
2633 bottom_border += default_border->bottom;
2634 gtk_border_free( default_border );
2635 }
2636 }
2637
2638 DoMoveWindow( m_x - left_border,
2639 m_y - top_border,
2640 m_width+left_border+right_border,
2641 m_height+top_border+bottom_border );
2642 }
2643
2644 if (m_width != oldSize.x || m_height != oldSize.y)
2645 {
2646 // update these variables to keep size_allocate handler
2647 // from sending another size event for this change
2648 GetClientSize( &m_oldClientWidth, &m_oldClientHeight );
2649
2650 gtk_widget_queue_resize(m_widget);
2651 if (!m_nativeSizeEvent)
2652 {
2653 wxSizeEvent event( wxSize(m_width,m_height), GetId() );
2654 event.SetEventObject( this );
2655 HandleWindowEvent( event );
2656 }
2657 } else
2658 if (sizeFlags & wxSIZE_FORCE_EVENT)
2659 {
2660 wxSizeEvent event( wxSize(m_width,m_height), GetId() );
2661 event.SetEventObject( this );
2662 HandleWindowEvent( event );
2663 }
2664 }
2665
2666 bool wxWindowGTK::GTKShowFromOnIdle()
2667 {
2668 if (IsShown() && m_showOnIdle && !gtk_widget_get_visible (m_widget))
2669 {
2670 GtkAllocation alloc;
2671 alloc.x = m_x;
2672 alloc.y = m_y;
2673 alloc.width = m_width;
2674 alloc.height = m_height;
2675 gtk_widget_size_allocate( m_widget, &alloc );
2676 gtk_widget_show( m_widget );
2677 wxShowEvent eventShow(GetId(), true);
2678 eventShow.SetEventObject(this);
2679 HandleWindowEvent(eventShow);
2680 m_showOnIdle = false;
2681 return true;
2682 }
2683
2684 return false;
2685 }
2686
2687 void wxWindowGTK::OnInternalIdle()
2688 {
2689 if ( gs_deferredFocusOut )
2690 GTKHandleDeferredFocusOut();
2691
2692 // Check if we have to show window now
2693 if (GTKShowFromOnIdle()) return;
2694
2695 if ( m_dirtyTabOrder )
2696 {
2697 m_dirtyTabOrder = false;
2698 RealizeTabOrder();
2699 }
2700
2701 wxWindowBase::OnInternalIdle();
2702 }
2703
2704 void wxWindowGTK::DoGetSize( int *width, int *height ) const
2705 {
2706 if (width) (*width) = m_width;
2707 if (height) (*height) = m_height;
2708 }
2709
2710 void wxWindowGTK::DoSetClientSize( int width, int height )
2711 {
2712 wxCHECK_RET( (m_widget != NULL), wxT("invalid window") );
2713
2714 const wxSize size = GetSize();
2715 const wxSize clientSize = GetClientSize();
2716 SetSize(width + (size.x - clientSize.x), height + (size.y - clientSize.y));
2717 }
2718
2719 void wxWindowGTK::DoGetClientSize( int *width, int *height ) const
2720 {
2721 wxCHECK_RET( (m_widget != NULL), wxT("invalid window") );
2722
2723 int w = m_width;
2724 int h = m_height;
2725
2726 if ( m_wxwindow )
2727 {
2728 // if window is scrollable, account for scrollbars
2729 if ( GTK_IS_SCROLLED_WINDOW(m_widget) )
2730 {
2731 GtkPolicyType policy[ScrollDir_Max];
2732 gtk_scrolled_window_get_policy(GTK_SCROLLED_WINDOW(m_widget),
2733 &policy[ScrollDir_Horz],
2734 &policy[ScrollDir_Vert]);
2735
2736 for ( int i = 0; i < ScrollDir_Max; i++ )
2737 {
2738 // don't account for the scrollbars we don't have
2739 GtkRange * const range = m_scrollBar[i];
2740 if ( !range )
2741 continue;
2742
2743 // nor for the ones we have but don't current show
2744 switch ( policy[i] )
2745 {
2746 case GTK_POLICY_NEVER:
2747 // never shown so doesn't take any place
2748 continue;
2749
2750 case GTK_POLICY_ALWAYS:
2751 // no checks necessary
2752 break;
2753
2754 case GTK_POLICY_AUTOMATIC:
2755 // may be shown or not, check
2756 GtkAdjustment *adj = gtk_range_get_adjustment(range);
2757 if (gtk_adjustment_get_upper(adj) <= gtk_adjustment_get_page_size(adj))
2758 continue;
2759 }
2760
2761 GtkScrolledWindowClass *scroll_class =
2762 GTK_SCROLLED_WINDOW_CLASS( GTK_OBJECT_GET_CLASS(m_widget) );
2763
2764 GtkRequisition req;
2765 gtk_widget_size_request(GTK_WIDGET(range), &req);
2766 if (i == ScrollDir_Horz)
2767 h -= req.height + scroll_class->scrollbar_spacing;
2768 else
2769 w -= req.width + scroll_class->scrollbar_spacing;
2770 }
2771 }
2772
2773 const wxSize sizeBorders = DoGetBorderSize();
2774 w -= sizeBorders.x;
2775 h -= sizeBorders.y;
2776
2777 if (w < 0)
2778 w = 0;
2779 if (h < 0)
2780 h = 0;
2781 }
2782
2783 if (width) *width = w;
2784 if (height) *height = h;
2785 }
2786
2787 wxSize wxWindowGTK::DoGetBorderSize() const
2788 {
2789 if ( !m_wxwindow )
2790 return wxWindowBase::DoGetBorderSize();
2791
2792 int x, y;
2793 WX_PIZZA(m_wxwindow)->get_border_widths(x, y);
2794
2795 return 2*wxSize(x, y);
2796 }
2797
2798 void wxWindowGTK::DoGetPosition( int *x, int *y ) const
2799 {
2800 int dx = 0;
2801 int dy = 0;
2802 GtkWidget* parent = NULL;
2803 if (m_widget)
2804 parent = gtk_widget_get_parent(m_widget);
2805 if (WX_IS_PIZZA(parent))
2806 {
2807 wxPizza* pizza = WX_PIZZA(parent);
2808 dx = pizza->m_scroll_x;
2809 dy = pizza->m_scroll_y;
2810 }
2811 if (x) (*x) = m_x - dx;
2812 if (y) (*y) = m_y - dy;
2813 }
2814
2815 void wxWindowGTK::DoClientToScreen( int *x, int *y ) const
2816 {
2817 wxCHECK_RET( (m_widget != NULL), wxT("invalid window") );
2818
2819 if (gtk_widget_get_window(m_widget) == NULL) return;
2820
2821 GdkWindow *source = NULL;
2822 if (m_wxwindow)
2823 source = gtk_widget_get_window(m_wxwindow);
2824 else
2825 source = gtk_widget_get_window(m_widget);
2826
2827 int org_x = 0;
2828 int org_y = 0;
2829 gdk_window_get_origin( source, &org_x, &org_y );
2830
2831 if (!m_wxwindow)
2832 {
2833 if (!gtk_widget_get_has_window(m_widget))
2834 {
2835 GtkAllocation a;
2836 gtk_widget_get_allocation(m_widget, &a);
2837 org_x += a.x;
2838 org_y += a.y;
2839 }
2840 }
2841
2842
2843 if (x)
2844 {
2845 if (GetLayoutDirection() == wxLayout_RightToLeft)
2846 *x = (GetClientSize().x - *x) + org_x;
2847 else
2848 *x += org_x;
2849 }
2850
2851 if (y) *y += org_y;
2852 }
2853
2854 void wxWindowGTK::DoScreenToClient( int *x, int *y ) const
2855 {
2856 wxCHECK_RET( (m_widget != NULL), wxT("invalid window") );
2857
2858 if (!gtk_widget_get_realized(m_widget)) return;
2859
2860 GdkWindow *source = NULL;
2861 if (m_wxwindow)
2862 source = gtk_widget_get_window(m_wxwindow);
2863 else
2864 source = gtk_widget_get_window(m_widget);
2865
2866 int org_x = 0;
2867 int org_y = 0;
2868 gdk_window_get_origin( source, &org_x, &org_y );
2869
2870 if (!m_wxwindow)
2871 {
2872 if (!gtk_widget_get_has_window(m_widget))
2873 {
2874 GtkAllocation a;
2875 gtk_widget_get_allocation(m_widget, &a);
2876 org_x += a.x;
2877 org_y += a.y;
2878 }
2879 }
2880
2881 if (x)
2882 {
2883 if (GetLayoutDirection() == wxLayout_RightToLeft)
2884 *x = (GetClientSize().x - *x) - org_x;
2885 else
2886 *x -= org_x;
2887 }
2888 if (y) *y -= org_y;
2889 }
2890
2891 bool wxWindowGTK::Show( bool show )
2892 {
2893 if ( !wxWindowBase::Show(show) )
2894 {
2895 // nothing to do
2896 return false;
2897 }
2898
2899 // notice that we may call Hide() before the window is created and this is
2900 // actually useful to create it hidden initially -- but we can't call
2901 // Show() before it is created
2902 if ( !m_widget )
2903 {
2904 wxASSERT_MSG( !show, "can't show invalid window" );
2905 return true;
2906 }
2907
2908 if ( show )
2909 {
2910 if ( m_showOnIdle )
2911 {
2912 // defer until later
2913 return true;
2914 }
2915
2916 gtk_widget_show(m_widget);
2917 }
2918 else // hide
2919 {
2920 gtk_widget_hide(m_widget);
2921 }
2922
2923 wxShowEvent eventShow(GetId(), show);
2924 eventShow.SetEventObject(this);
2925 HandleWindowEvent(eventShow);
2926
2927 return true;
2928 }
2929
2930 void wxWindowGTK::DoEnable( bool enable )
2931 {
2932 wxCHECK_RET( (m_widget != NULL), wxT("invalid window") );
2933
2934 gtk_widget_set_sensitive( m_widget, enable );
2935 if (m_wxwindow && (m_wxwindow != m_widget))
2936 gtk_widget_set_sensitive( m_wxwindow, enable );
2937 }
2938
2939 int wxWindowGTK::GetCharHeight() const
2940 {
2941 wxCHECK_MSG( (m_widget != NULL), 12, wxT("invalid window") );
2942
2943 wxFont font = GetFont();
2944 wxCHECK_MSG( font.IsOk(), 12, wxT("invalid font") );
2945
2946 PangoContext* context = gtk_widget_get_pango_context(m_widget);
2947
2948 if (!context)
2949 return 0;
2950
2951 PangoFontDescription *desc = font.GetNativeFontInfo()->description;
2952 PangoLayout *layout = pango_layout_new(context);
2953 pango_layout_set_font_description(layout, desc);
2954 pango_layout_set_text(layout, "H", 1);
2955 PangoLayoutLine *line = (PangoLayoutLine *)pango_layout_get_lines(layout)->data;
2956
2957 PangoRectangle rect;
2958 pango_layout_line_get_extents(line, NULL, &rect);
2959
2960 g_object_unref (layout);
2961
2962 return (int) PANGO_PIXELS(rect.height);
2963 }
2964
2965 int wxWindowGTK::GetCharWidth() const
2966 {
2967 wxCHECK_MSG( (m_widget != NULL), 8, wxT("invalid window") );
2968
2969 wxFont font = GetFont();
2970 wxCHECK_MSG( font.IsOk(), 8, wxT("invalid font") );
2971
2972 PangoContext* context = gtk_widget_get_pango_context(m_widget);
2973
2974 if (!context)
2975 return 0;
2976
2977 PangoFontDescription *desc = font.GetNativeFontInfo()->description;
2978 PangoLayout *layout = pango_layout_new(context);
2979 pango_layout_set_font_description(layout, desc);
2980 pango_layout_set_text(layout, "g", 1);
2981 PangoLayoutLine *line = (PangoLayoutLine *)pango_layout_get_lines(layout)->data;
2982
2983 PangoRectangle rect;
2984 pango_layout_line_get_extents(line, NULL, &rect);
2985
2986 g_object_unref (layout);
2987
2988 return (int) PANGO_PIXELS(rect.width);
2989 }
2990
2991 void wxWindowGTK::DoGetTextExtent( const wxString& string,
2992 int *x,
2993 int *y,
2994 int *descent,
2995 int *externalLeading,
2996 const wxFont *theFont ) const
2997 {
2998 wxFont fontToUse = theFont ? *theFont : GetFont();
2999
3000 wxCHECK_RET( fontToUse.IsOk(), wxT("invalid font") );
3001
3002 if (string.empty())
3003 {
3004 if (x) (*x) = 0;
3005 if (y) (*y) = 0;
3006 return;
3007 }
3008
3009 PangoContext *context = NULL;
3010 if (m_widget)
3011 context = gtk_widget_get_pango_context( m_widget );
3012
3013 if (!context)
3014 {
3015 if (x) (*x) = 0;
3016 if (y) (*y) = 0;
3017 return;
3018 }
3019
3020 PangoFontDescription *desc = fontToUse.GetNativeFontInfo()->description;
3021 PangoLayout *layout = pango_layout_new(context);
3022 pango_layout_set_font_description(layout, desc);
3023 {
3024 const wxCharBuffer data = wxGTK_CONV( string );
3025 if ( data )
3026 pango_layout_set_text(layout, data, strlen(data));
3027 }
3028
3029 PangoRectangle rect;
3030 pango_layout_get_extents(layout, NULL, &rect);
3031
3032 if (x) (*x) = (wxCoord) PANGO_PIXELS(rect.width);
3033 if (y) (*y) = (wxCoord) PANGO_PIXELS(rect.height);
3034 if (descent)
3035 {
3036 PangoLayoutIter *iter = pango_layout_get_iter(layout);
3037 int baseline = pango_layout_iter_get_baseline(iter);
3038 pango_layout_iter_free(iter);
3039 *descent = *y - PANGO_PIXELS(baseline);
3040 }
3041 if (externalLeading) (*externalLeading) = 0; // ??
3042
3043 g_object_unref (layout);
3044 }
3045
3046 void wxWindowGTK::GTKDisableFocusOutEvent()
3047 {
3048 g_signal_handlers_block_by_func( m_focusWidget,
3049 (gpointer) gtk_window_focus_out_callback, this);
3050 }
3051
3052 void wxWindowGTK::GTKEnableFocusOutEvent()
3053 {
3054 g_signal_handlers_unblock_by_func( m_focusWidget,
3055 (gpointer) gtk_window_focus_out_callback, this);
3056 }
3057
3058 bool wxWindowGTK::GTKHandleFocusIn()
3059 {
3060 // Disable default focus handling for custom windows since the default GTK+
3061 // handler issues a repaint
3062 const bool retval = m_wxwindow ? true : false;
3063
3064
3065 // NB: if there's still unprocessed deferred focus-out event (see
3066 // GTKHandleFocusOut() for explanation), we need to process it first so
3067 // that the order of focus events -- focus-out first, then focus-in
3068 // elsewhere -- is preserved
3069 if ( gs_deferredFocusOut )
3070 {
3071 if ( GTKNeedsToFilterSameWindowFocus() &&
3072 gs_deferredFocusOut == this )
3073 {
3074 // GTK+ focus changed from this wxWindow back to itself, so don't
3075 // emit any events at all
3076 wxLogTrace(TRACE_FOCUS,
3077 "filtered out spurious focus change within %s(%p, %s)",
3078 GetClassInfo()->GetClassName(), this, GetLabel());
3079 gs_deferredFocusOut = NULL;
3080 return retval;
3081 }
3082
3083 // otherwise we need to send focus-out first
3084 wxASSERT_MSG ( gs_deferredFocusOut != this,
3085 "GTKHandleFocusIn(GTKFocus_Normal) called even though focus changed back to itself - derived class should handle this" );
3086 GTKHandleDeferredFocusOut();
3087 }
3088
3089
3090 wxLogTrace(TRACE_FOCUS,
3091 "handling focus_in event for %s(%p, %s)",
3092 GetClassInfo()->GetClassName(), this, GetLabel());
3093
3094 if (m_imData)
3095 gtk_im_context_focus_in(m_imData->context);
3096
3097 gs_currentFocus = this;
3098 gs_pendingFocus = NULL;
3099
3100 #if wxUSE_CARET
3101 // caret needs to be informed about focus change
3102 wxCaret *caret = GetCaret();
3103 if ( caret )
3104 {
3105 caret->OnSetFocus();
3106 }
3107 #endif // wxUSE_CARET
3108
3109 // Notify the parent keeping track of focus for the kbd navigation
3110 // purposes that we got it.
3111 wxChildFocusEvent eventChildFocus(static_cast<wxWindow*>(this));
3112 GTKProcessEvent(eventChildFocus);
3113
3114 wxFocusEvent eventFocus(wxEVT_SET_FOCUS, GetId());
3115 eventFocus.SetEventObject(this);
3116 GTKProcessEvent(eventFocus);
3117
3118 return retval;
3119 }
3120
3121 bool wxWindowGTK::GTKHandleFocusOut()
3122 {
3123 // Disable default focus handling for custom windows since the default GTK+
3124 // handler issues a repaint
3125 const bool retval = m_wxwindow ? true : false;
3126
3127
3128 // NB: If a control is composed of several GtkWidgets and when focus
3129 // changes from one of them to another within the same wxWindow, we get
3130 // a focus-out event followed by focus-in for another GtkWidget owned
3131 // by the same wx control. We don't want to generate two spurious
3132 // wxEVT_SET_FOCUS events in this case, so we defer sending wx events
3133 // from GTKHandleFocusOut() until we know for sure it's not coming back
3134 // (i.e. in GTKHandleFocusIn() or at idle time).
3135 if ( GTKNeedsToFilterSameWindowFocus() )
3136 {
3137 wxASSERT_MSG( gs_deferredFocusOut == NULL,
3138 "deferred focus out event already pending" );
3139 wxLogTrace(TRACE_FOCUS,
3140 "deferring focus_out event for %s(%p, %s)",
3141 GetClassInfo()->GetClassName(), this, GetLabel());
3142 gs_deferredFocusOut = this;
3143 return retval;
3144 }
3145
3146 GTKHandleFocusOutNoDeferring();
3147
3148 return retval;
3149 }
3150
3151 void wxWindowGTK::GTKHandleFocusOutNoDeferring()
3152 {
3153 wxLogTrace(TRACE_FOCUS,
3154 "handling focus_out event for %s(%p, %s)",
3155 GetClassInfo()->GetClassName(), this, GetLabel());
3156
3157 if (m_imData)
3158 gtk_im_context_focus_out(m_imData->context);
3159
3160 if ( gs_currentFocus != this )
3161 {
3162 // Something is terribly wrong, gs_currentFocus is out of sync with the
3163 // real focus. We will reset it to NULL anyway, because after this
3164 // focus-out event is handled, one of the following with happen:
3165 //
3166 // * either focus will go out of the app altogether, in which case
3167 // gs_currentFocus _should_ be NULL
3168 //
3169 // * or it goes to another control, in which case focus-in event will
3170 // follow immediately and it will set gs_currentFocus to the right
3171 // value
3172 wxLogDebug("window %s(%p, %s) lost focus even though it didn't have it",
3173 GetClassInfo()->GetClassName(), this, GetLabel());
3174 }
3175 gs_currentFocus = NULL;
3176
3177 #if wxUSE_CARET
3178 // caret needs to be informed about focus change
3179 wxCaret *caret = GetCaret();
3180 if ( caret )
3181 {
3182 caret->OnKillFocus();
3183 }
3184 #endif // wxUSE_CARET
3185
3186 wxFocusEvent event( wxEVT_KILL_FOCUS, GetId() );
3187 event.SetEventObject( this );
3188 event.SetWindow( FindFocus() );
3189 GTKProcessEvent( event );
3190 }
3191
3192 /*static*/
3193 void wxWindowGTK::GTKHandleDeferredFocusOut()
3194 {
3195 // NB: See GTKHandleFocusOut() for explanation. This function is called
3196 // from either GTKHandleFocusIn() or OnInternalIdle() to process
3197 // deferred event.
3198 if ( gs_deferredFocusOut )
3199 {
3200 wxWindowGTK *win = gs_deferredFocusOut;
3201 gs_deferredFocusOut = NULL;
3202
3203 wxLogTrace(TRACE_FOCUS,
3204 "processing deferred focus_out event for %s(%p, %s)",
3205 win->GetClassInfo()->GetClassName(), win, win->GetLabel());
3206
3207 win->GTKHandleFocusOutNoDeferring();
3208 }
3209 }
3210
3211 void wxWindowGTK::SetFocus()
3212 {
3213 wxCHECK_RET( m_widget != NULL, wxT("invalid window") );
3214
3215 // Setting "physical" focus is not immediate in GTK+ and while
3216 // gtk_widget_is_focus ("determines if the widget is the focus widget
3217 // within its toplevel", i.e. returns true for one widget per TLW, not
3218 // globally) returns true immediately after grabbing focus,
3219 // GTK_WIDGET_HAS_FOCUS (which returns true only for the one widget that
3220 // has focus at the moment) takes effect only after the window is shown
3221 // (if it was hidden at the moment of the call) or at the next event loop
3222 // iteration.
3223 //
3224 // Because we want to FindFocus() call immediately following
3225 // foo->SetFocus() to return foo, we have to keep track of "pending" focus
3226 // ourselves.
3227 gs_pendingFocus = this;
3228
3229 GtkWidget *widget = m_wxwindow ? m_wxwindow : m_focusWidget;
3230
3231 if ( GTK_IS_CONTAINER(widget) &&
3232 !gtk_widget_get_can_focus(widget) )
3233 {
3234 wxLogTrace(TRACE_FOCUS,
3235 wxT("Setting focus to a child of %s(%p, %s)"),
3236 GetClassInfo()->GetClassName(), this, GetLabel().c_str());
3237 gtk_widget_child_focus(widget, GTK_DIR_TAB_FORWARD);
3238 }
3239 else
3240 {
3241 wxLogTrace(TRACE_FOCUS,
3242 wxT("Setting focus to %s(%p, %s)"),
3243 GetClassInfo()->GetClassName(), this, GetLabel().c_str());
3244 gtk_widget_grab_focus(widget);
3245 }
3246 }
3247
3248 void wxWindowGTK::SetCanFocus(bool canFocus)
3249 {
3250 gtk_widget_set_can_focus(m_widget, canFocus);
3251
3252 if ( m_wxwindow && (m_widget != m_wxwindow) )
3253 {
3254 gtk_widget_set_can_focus(m_wxwindow, canFocus);
3255 }
3256 }
3257
3258 bool wxWindowGTK::Reparent( wxWindowBase *newParentBase )
3259 {
3260 wxCHECK_MSG( (m_widget != NULL), false, wxT("invalid window") );
3261
3262 wxWindowGTK * const newParent = (wxWindowGTK *)newParentBase;
3263
3264 wxASSERT( GTK_IS_WIDGET(m_widget) );
3265
3266 if ( !wxWindowBase::Reparent(newParent) )
3267 return false;
3268
3269 wxASSERT( GTK_IS_WIDGET(m_widget) );
3270
3271 // Notice that old m_parent pointer might be non-NULL here but the widget
3272 // still not have any parent at GTK level if it's a notebook page that had
3273 // been removed from the notebook so test this at GTK level and not wx one.
3274 if ( GtkWidget *parentGTK = gtk_widget_get_parent(m_widget) )
3275 gtk_container_remove(GTK_CONTAINER(parentGTK), m_widget);
3276
3277 wxASSERT( GTK_IS_WIDGET(m_widget) );
3278
3279 if (newParent)
3280 {
3281 if (gtk_widget_get_visible (newParent->m_widget))
3282 {
3283 m_showOnIdle = true;
3284 gtk_widget_hide( m_widget );
3285 }
3286 /* insert GTK representation */
3287 newParent->AddChildGTK(this);
3288 }
3289
3290 SetLayoutDirection(wxLayout_Default);
3291
3292 return true;
3293 }
3294
3295 void wxWindowGTK::DoAddChild(wxWindowGTK *child)
3296 {
3297 wxASSERT_MSG( (m_widget != NULL), wxT("invalid window") );
3298 wxASSERT_MSG( (child != NULL), wxT("invalid child window") );
3299
3300 /* add to list */
3301 AddChild( child );
3302
3303 /* insert GTK representation */
3304 AddChildGTK(child);
3305 }
3306
3307 void wxWindowGTK::AddChild(wxWindowBase *child)
3308 {
3309 wxWindowBase::AddChild(child);
3310 m_dirtyTabOrder = true;
3311 wxTheApp->WakeUpIdle();
3312 }
3313
3314 void wxWindowGTK::RemoveChild(wxWindowBase *child)
3315 {
3316 wxWindowBase::RemoveChild(child);
3317 m_dirtyTabOrder = true;
3318 wxTheApp->WakeUpIdle();
3319 }
3320
3321 /* static */
3322 wxLayoutDirection wxWindowGTK::GTKGetLayout(GtkWidget *widget)
3323 {
3324 return gtk_widget_get_direction(widget) == GTK_TEXT_DIR_RTL
3325 ? wxLayout_RightToLeft
3326 : wxLayout_LeftToRight;
3327 }
3328
3329 /* static */
3330 void wxWindowGTK::GTKSetLayout(GtkWidget *widget, wxLayoutDirection dir)
3331 {
3332 wxASSERT_MSG( dir != wxLayout_Default, wxT("invalid layout direction") );
3333
3334 gtk_widget_set_direction(widget,
3335 dir == wxLayout_RightToLeft ? GTK_TEXT_DIR_RTL
3336 : GTK_TEXT_DIR_LTR);
3337 }
3338
3339 wxLayoutDirection wxWindowGTK::GetLayoutDirection() const
3340 {
3341 return GTKGetLayout(m_widget);
3342 }
3343
3344 void wxWindowGTK::SetLayoutDirection(wxLayoutDirection dir)
3345 {
3346 if ( dir == wxLayout_Default )
3347 {
3348 const wxWindow *const parent = GetParent();
3349 if ( parent )
3350 {
3351 // inherit layout from parent.
3352 dir = parent->GetLayoutDirection();
3353 }
3354 else // no parent, use global default layout
3355 {
3356 dir = wxTheApp->GetLayoutDirection();
3357 }
3358 }
3359
3360 if ( dir == wxLayout_Default )
3361 return;
3362
3363 GTKSetLayout(m_widget, dir);
3364
3365 if (m_wxwindow && (m_wxwindow != m_widget))
3366 GTKSetLayout(m_wxwindow, dir);
3367 }
3368
3369 wxCoord
3370 wxWindowGTK::AdjustForLayoutDirection(wxCoord x,
3371 wxCoord WXUNUSED(width),
3372 wxCoord WXUNUSED(widthTotal)) const
3373 {
3374 // We now mirror the coordinates of RTL windows in wxPizza
3375 return x;
3376 }
3377
3378 void wxWindowGTK::DoMoveInTabOrder(wxWindow *win, WindowOrder move)
3379 {
3380 wxWindowBase::DoMoveInTabOrder(win, move);
3381 m_dirtyTabOrder = true;
3382 wxTheApp->WakeUpIdle();
3383 }
3384
3385 bool wxWindowGTK::DoNavigateIn(int flags)
3386 {
3387 if ( flags & wxNavigationKeyEvent::WinChange )
3388 {
3389 wxFAIL_MSG( wxT("not implemented") );
3390
3391 return false;
3392 }
3393 else // navigate inside the container
3394 {
3395 wxWindow *parent = wxGetTopLevelParent((wxWindow *)this);
3396 wxCHECK_MSG( parent, false, wxT("every window must have a TLW parent") );
3397
3398 GtkDirectionType dir;
3399 dir = flags & wxNavigationKeyEvent::IsForward ? GTK_DIR_TAB_FORWARD
3400 : GTK_DIR_TAB_BACKWARD;
3401
3402 gboolean rc;
3403 g_signal_emit_by_name(parent->m_widget, "focus", dir, &rc);
3404
3405 return rc == TRUE;
3406 }
3407 }
3408
3409 bool wxWindowGTK::GTKWidgetNeedsMnemonic() const
3410 {
3411 // none needed by default
3412 return false;
3413 }
3414
3415 void wxWindowGTK::GTKWidgetDoSetMnemonic(GtkWidget* WXUNUSED(w))
3416 {
3417 // nothing to do by default since none is needed
3418 }
3419
3420 void wxWindowGTK::RealizeTabOrder()
3421 {
3422 if (m_wxwindow)
3423 {
3424 if ( !m_children.empty() )
3425 {
3426 // we don't only construct the correct focus chain but also use
3427 // this opportunity to update the mnemonic widgets for the widgets
3428 // that need them
3429
3430 GList *chain = NULL;
3431 wxWindowGTK* mnemonicWindow = NULL;
3432
3433 for ( wxWindowList::const_iterator i = m_children.begin();
3434 i != m_children.end();
3435 ++i )
3436 {
3437 wxWindowGTK *win = *i;
3438
3439 bool focusableFromKeyboard = win->AcceptsFocusFromKeyboard();
3440
3441 if ( mnemonicWindow )
3442 {
3443 if ( focusableFromKeyboard )
3444 {
3445 // wxComboBox et al. needs to focus on on a different
3446 // widget than m_widget, so if the main widget isn't
3447 // focusable try the connect widget
3448 GtkWidget* w = win->m_widget;
3449 if ( !gtk_widget_get_can_focus(w) )
3450 {
3451 w = win->GetConnectWidget();
3452 if ( !gtk_widget_get_can_focus(w) )
3453 w = NULL;
3454 }
3455
3456 if ( w )
3457 {
3458 mnemonicWindow->GTKWidgetDoSetMnemonic(w);
3459 mnemonicWindow = NULL;
3460 }
3461 }
3462 }
3463 else if ( win->GTKWidgetNeedsMnemonic() )
3464 {
3465 mnemonicWindow = win;
3466 }
3467
3468 if ( focusableFromKeyboard )
3469 chain = g_list_prepend(chain, win->m_widget);
3470 }
3471
3472 chain = g_list_reverse(chain);
3473
3474 gtk_container_set_focus_chain(GTK_CONTAINER(m_wxwindow), chain);
3475 g_list_free(chain);
3476 }
3477 else // no children
3478 {
3479 gtk_container_unset_focus_chain(GTK_CONTAINER(m_wxwindow));
3480 }
3481 }
3482 }
3483
3484 void wxWindowGTK::Raise()
3485 {
3486 wxCHECK_RET( (m_widget != NULL), wxT("invalid window") );
3487
3488 if (m_wxwindow && gtk_widget_get_window(m_wxwindow))
3489 {
3490 gdk_window_raise(gtk_widget_get_window(m_wxwindow));
3491 }
3492 else if (gtk_widget_get_window(m_widget))
3493 {
3494 gdk_window_raise(gtk_widget_get_window(m_widget));
3495 }
3496 }
3497
3498 void wxWindowGTK::Lower()
3499 {
3500 wxCHECK_RET( (m_widget != NULL), wxT("invalid window") );
3501
3502 if (m_wxwindow && gtk_widget_get_window(m_wxwindow))
3503 {
3504 gdk_window_lower(gtk_widget_get_window(m_wxwindow));
3505 }
3506 else if (gtk_widget_get_window(m_widget))
3507 {
3508 gdk_window_lower(gtk_widget_get_window(m_widget));
3509 }
3510 }
3511
3512 bool wxWindowGTK::SetCursor( const wxCursor &cursor )
3513 {
3514 if ( !wxWindowBase::SetCursor(cursor.IsOk() ? cursor : *wxSTANDARD_CURSOR) )
3515 return false;
3516
3517 GTKUpdateCursor();
3518
3519 return true;
3520 }
3521
3522 void wxWindowGTK::GTKUpdateCursor(bool update_self /*=true*/, bool recurse /*=true*/)
3523 {
3524 if (update_self)
3525 {
3526 wxCursor cursor(g_globalCursor.IsOk() ? g_globalCursor : GetCursor());
3527 if ( cursor.IsOk() )
3528 {
3529 wxArrayGdkWindows windowsThis;
3530 GdkWindow* window = GTKGetWindow(windowsThis);
3531 if (window)
3532 gdk_window_set_cursor( window, cursor.GetCursor() );
3533 else
3534 {
3535 const size_t count = windowsThis.size();
3536 for ( size_t n = 0; n < count; n++ )
3537 {
3538 GdkWindow *win = windowsThis[n];
3539 // It can be zero if the window has not been realized yet.
3540 if ( win )
3541 {
3542 gdk_window_set_cursor(win, cursor.GetCursor());
3543 }
3544 }
3545 }
3546 }
3547 }
3548
3549 if (recurse)
3550 {
3551 for (wxWindowList::iterator it = GetChildren().begin(); it != GetChildren().end(); ++it)
3552 {
3553 (*it)->GTKUpdateCursor( true );
3554 }
3555 }
3556 }
3557
3558 void wxWindowGTK::WarpPointer( int x, int y )
3559 {
3560 wxCHECK_RET( (m_widget != NULL), wxT("invalid window") );
3561
3562 ClientToScreen(&x, &y);
3563 GdkDisplay* display = gtk_widget_get_display(m_widget);
3564 GdkScreen* screen = gtk_widget_get_screen(m_widget);
3565 #ifdef __WXGTK30__
3566 GdkDeviceManager* manager = gdk_display_get_device_manager(display);
3567 gdk_device_warp(gdk_device_manager_get_client_pointer(manager), screen, x, y);
3568 #else
3569 #ifdef GDK_WINDOWING_X11
3570 XWarpPointer(GDK_DISPLAY_XDISPLAY(display),
3571 None,
3572 GDK_WINDOW_XID(gdk_screen_get_root_window(screen)),
3573 0, 0, 0, 0, x, y);
3574 #endif
3575 #endif
3576 }
3577
3578 wxWindowGTK::ScrollDir wxWindowGTK::ScrollDirFromRange(GtkRange *range) const
3579 {
3580 // find the scrollbar which generated the event
3581 for ( int dir = 0; dir < ScrollDir_Max; dir++ )
3582 {
3583 if ( range == m_scrollBar[dir] )
3584 return (ScrollDir)dir;
3585 }
3586
3587 wxFAIL_MSG( wxT("event from unknown scrollbar received") );
3588
3589 return ScrollDir_Max;
3590 }
3591
3592 bool wxWindowGTK::DoScrollByUnits(ScrollDir dir, ScrollUnit unit, int units)
3593 {
3594 bool changed = false;
3595 GtkRange* range = m_scrollBar[dir];
3596 if ( range && units )
3597 {
3598 GtkAdjustment* adj = gtk_range_get_adjustment(range);
3599 double inc = unit == ScrollUnit_Line ? gtk_adjustment_get_step_increment(adj)
3600 : gtk_adjustment_get_page_increment(adj);
3601
3602 const int posOld = wxRound(gtk_adjustment_get_value(adj));
3603 gtk_range_set_value(range, posOld + units*inc);
3604
3605 changed = wxRound(gtk_adjustment_get_value(adj)) != posOld;
3606 }
3607
3608 return changed;
3609 }
3610
3611 bool wxWindowGTK::ScrollLines(int lines)
3612 {
3613 return DoScrollByUnits(ScrollDir_Vert, ScrollUnit_Line, lines);
3614 }
3615
3616 bool wxWindowGTK::ScrollPages(int pages)
3617 {
3618 return DoScrollByUnits(ScrollDir_Vert, ScrollUnit_Page, pages);
3619 }
3620
3621 void wxWindowGTK::Refresh(bool WXUNUSED(eraseBackground),
3622 const wxRect *rect)
3623 {
3624 if (m_wxwindow)
3625 {
3626 if (gtk_widget_get_mapped(m_wxwindow))
3627 {
3628 GdkWindow* window = gtk_widget_get_window(m_wxwindow);
3629 if (rect)
3630 {
3631 GdkRectangle r = { rect->x, rect->y, rect->width, rect->height };
3632 if (GetLayoutDirection() == wxLayout_RightToLeft)
3633 r.x = gdk_window_get_width(window) - r.x - rect->width;
3634 gdk_window_invalidate_rect(window, &r, true);
3635 }
3636 else
3637 gdk_window_invalidate_rect(window, NULL, true);
3638 }
3639 }
3640 else if (m_widget)
3641 {
3642 if (gtk_widget_get_mapped(m_widget))
3643 {
3644 if (rect)
3645 gtk_widget_queue_draw_area(m_widget, rect->x, rect->y, rect->width, rect->height);
3646 else
3647 gtk_widget_queue_draw(m_widget);
3648 }
3649 }
3650 }
3651
3652 void wxWindowGTK::Update()
3653 {
3654 if (m_widget && gtk_widget_get_mapped(m_widget))
3655 {
3656 GdkDisplay* display = gtk_widget_get_display(m_widget);
3657 // Flush everything out to the server, and wait for it to finish.
3658 // This ensures nothing will overwrite the drawing we are about to do.
3659 gdk_display_sync(display);
3660
3661 GdkWindow* window = GTKGetDrawingWindow();
3662 if (window == NULL)
3663 window = gtk_widget_get_window(m_widget);
3664 gdk_window_process_updates(window, true);
3665
3666 // Flush again, but no need to wait for it to finish
3667 gdk_display_flush(display);
3668 }
3669 }
3670
3671 bool wxWindowGTK::DoIsExposed( int x, int y ) const
3672 {
3673 return m_updateRegion.Contains(x, y) != wxOutRegion;
3674 }
3675
3676 bool wxWindowGTK::DoIsExposed( int x, int y, int w, int h ) const
3677 {
3678 if (GetLayoutDirection() == wxLayout_RightToLeft)
3679 return m_updateRegion.Contains(x-w, y, w, h) != wxOutRegion;
3680 else
3681 return m_updateRegion.Contains(x, y, w, h) != wxOutRegion;
3682 }
3683
3684 void wxWindowGTK::GtkSendPaintEvents()
3685 {
3686 if (!m_wxwindow)
3687 {
3688 m_updateRegion.Clear();
3689 return;
3690 }
3691 #if wxGTK_HAS_COMPOSITING_SUPPORT
3692 cairo_t* cr = NULL;
3693 #endif
3694 // Clip to paint region in wxClientDC
3695 m_clipPaintRegion = true;
3696
3697 m_nativeUpdateRegion = m_updateRegion;
3698
3699 if (GetLayoutDirection() == wxLayout_RightToLeft)
3700 {
3701 // Transform m_updateRegion under RTL
3702 m_updateRegion.Clear();
3703
3704 gint width;
3705 gdk_drawable_get_size(gtk_widget_get_window(m_wxwindow), &width, NULL);
3706
3707 wxRegionIterator upd( m_nativeUpdateRegion );
3708 while (upd)
3709 {
3710 wxRect rect;
3711 rect.x = upd.GetX();
3712 rect.y = upd.GetY();
3713 rect.width = upd.GetWidth();
3714 rect.height = upd.GetHeight();
3715
3716 rect.x = width - rect.x - rect.width;
3717 m_updateRegion.Union( rect );
3718
3719 ++upd;
3720 }
3721 }
3722
3723 switch ( GetBackgroundStyle() )
3724 {
3725 case wxBG_STYLE_TRANSPARENT:
3726 #if wxGTK_HAS_COMPOSITING_SUPPORT
3727 if (IsTransparentBackgroundSupported())
3728 {
3729 // Set a transparent background, so that overlaying in parent
3730 // might indeed let see through where this child did not
3731 // explicitly paint.
3732 // NB: it works also for top level windows (but this is the
3733 // windows manager which then does the compositing job)
3734 cr = gdk_cairo_create(m_wxwindow->window);
3735 gdk_cairo_region(cr, m_nativeUpdateRegion.GetRegion());
3736 cairo_clip(cr);
3737
3738 cairo_set_operator(cr, CAIRO_OPERATOR_CLEAR);
3739 cairo_paint(cr);
3740 cairo_set_operator(cr, CAIRO_OPERATOR_OVER);
3741 cairo_surface_flush(cairo_get_target(cr));
3742 }
3743 #endif // wxGTK_HAS_COMPOSITING_SUPPORT
3744 break;
3745
3746 case wxBG_STYLE_ERASE:
3747 {
3748 wxWindowDC dc( (wxWindow*)this );
3749 dc.SetDeviceClippingRegion( m_updateRegion );
3750
3751 // Work around gtk-qt <= 0.60 bug whereby the window colour
3752 // remains grey
3753 if ( UseBgCol() &&
3754 wxSystemOptions::
3755 GetOptionInt("gtk.window.force-background-colour") )
3756 {
3757 dc.SetBackground(GetBackgroundColour());
3758 dc.Clear();
3759 }
3760
3761 wxEraseEvent erase_event( GetId(), &dc );
3762 erase_event.SetEventObject( this );
3763
3764 if ( HandleWindowEvent(erase_event) )
3765 {
3766 // background erased, don't do it again
3767 break;
3768 }
3769 }
3770 // fall through
3771
3772 case wxBG_STYLE_SYSTEM:
3773 if ( GetThemeEnabled() )
3774 {
3775 // find ancestor from which to steal background
3776 wxWindow *parent = wxGetTopLevelParent((wxWindow *)this);
3777 if (!parent)
3778 parent = (wxWindow*)this;
3779
3780 if (gtk_widget_get_mapped(parent->m_widget))
3781 {
3782 wxRegionIterator upd( m_nativeUpdateRegion );
3783 while (upd)
3784 {
3785 GdkRectangle rect;
3786 rect.x = upd.GetX();
3787 rect.y = upd.GetY();
3788 rect.width = upd.GetWidth();
3789 rect.height = upd.GetHeight();
3790
3791 gtk_paint_flat_box(gtk_widget_get_style(parent->m_widget),
3792 GTKGetDrawingWindow(),
3793 gtk_widget_get_state(m_wxwindow),
3794 GTK_SHADOW_NONE,
3795 &rect,
3796 parent->m_widget,
3797 (char *)"base",
3798 0, 0, -1, -1 );
3799
3800 ++upd;
3801 }
3802 }
3803 }
3804 break;
3805
3806 case wxBG_STYLE_PAINT:
3807 // nothing to do: window will be painted over in EVT_PAINT
3808 break;
3809
3810 default:
3811 wxFAIL_MSG( "unsupported background style" );
3812 }
3813
3814 wxNcPaintEvent nc_paint_event( GetId() );
3815 nc_paint_event.SetEventObject( this );
3816 HandleWindowEvent( nc_paint_event );
3817
3818 wxPaintEvent paint_event( GetId() );
3819 paint_event.SetEventObject( this );
3820 HandleWindowEvent( paint_event );
3821
3822 #if wxGTK_HAS_COMPOSITING_SUPPORT
3823 if (IsTransparentBackgroundSupported())
3824 { // now composite children which need it
3825 // Overlay all our composite children on top of the painted area
3826 wxWindowList::compatibility_iterator node;
3827 for ( node = m_children.GetFirst(); node ; node = node->GetNext() )
3828 {
3829 wxWindow *compositeChild = node->GetData();
3830 if (compositeChild->GetBackgroundStyle() == wxBG_STYLE_TRANSPARENT)
3831 {
3832 if (cr == NULL)
3833 {
3834 cr = gdk_cairo_create(m_wxwindow->window);
3835 gdk_cairo_region(cr, m_nativeUpdateRegion.GetRegion());
3836 cairo_clip(cr);
3837 }
3838
3839 GtkWidget *child = compositeChild->m_wxwindow;
3840 GtkAllocation alloc;
3841 gtk_widget_get_allocation(child, &alloc);
3842
3843 // The source data is the (composited) child
3844 gdk_cairo_set_source_window(
3845 cr, gtk_widget_get_window(child), alloc.x, alloc.y);
3846
3847 cairo_paint(cr);
3848 }
3849 }
3850 if (cr)
3851 cairo_destroy(cr);
3852 }
3853 #endif // wxGTK_HAS_COMPOSITING_SUPPORT
3854
3855 m_clipPaintRegion = false;
3856
3857 m_updateRegion.Clear();
3858 m_nativeUpdateRegion.Clear();
3859 }
3860
3861 void wxWindowGTK::SetDoubleBuffered( bool on )
3862 {
3863 wxCHECK_RET( (m_widget != NULL), wxT("invalid window") );
3864
3865 if ( m_wxwindow )
3866 gtk_widget_set_double_buffered( m_wxwindow, on );
3867 }
3868
3869 bool wxWindowGTK::IsDoubleBuffered() const
3870 {
3871 return gtk_widget_get_double_buffered( m_wxwindow );
3872 }
3873
3874 void wxWindowGTK::ClearBackground()
3875 {
3876 wxCHECK_RET( m_widget != NULL, wxT("invalid window") );
3877 }
3878
3879 #if wxUSE_TOOLTIPS
3880 void wxWindowGTK::DoSetToolTip( wxToolTip *tip )
3881 {
3882 if (m_tooltip != tip)
3883 {
3884 wxWindowBase::DoSetToolTip(tip);
3885
3886 if (m_tooltip)
3887 m_tooltip->GTKSetWindow(static_cast<wxWindow*>(this));
3888 else
3889 GTKApplyToolTip(NULL);
3890 }
3891 }
3892
3893 void wxWindowGTK::GTKApplyToolTip(const char* tip)
3894 {
3895 wxToolTip::GTKApply(GetConnectWidget(), tip);
3896 }
3897 #endif // wxUSE_TOOLTIPS
3898
3899 bool wxWindowGTK::SetBackgroundColour( const wxColour &colour )
3900 {
3901 wxCHECK_MSG( m_widget != NULL, false, wxT("invalid window") );
3902
3903 if (!wxWindowBase::SetBackgroundColour(colour))
3904 return false;
3905
3906 if (colour.IsOk())
3907 {
3908 // We need the pixel value e.g. for background clearing.
3909 m_backgroundColour.CalcPixel(gtk_widget_get_colormap(m_widget));
3910 }
3911
3912 // apply style change (forceStyle=true so that new style is applied
3913 // even if the bg colour changed from valid to wxNullColour)
3914 GTKApplyWidgetStyle(true);
3915
3916 return true;
3917 }
3918
3919 bool wxWindowGTK::SetForegroundColour( const wxColour &colour )
3920 {
3921 wxCHECK_MSG( m_widget != NULL, false, wxT("invalid window") );
3922
3923 if (!wxWindowBase::SetForegroundColour(colour))
3924 {
3925 return false;
3926 }
3927
3928 if (colour.IsOk())
3929 {
3930 // We need the pixel value e.g. for background clearing.
3931 m_foregroundColour.CalcPixel(gtk_widget_get_colormap(m_widget));
3932 }
3933
3934 // apply style change (forceStyle=true so that new style is applied
3935 // even if the bg colour changed from valid to wxNullColour):
3936 GTKApplyWidgetStyle(true);
3937
3938 return true;
3939 }
3940
3941 PangoContext *wxWindowGTK::GTKGetPangoDefaultContext()
3942 {
3943 return gtk_widget_get_pango_context( m_widget );
3944 }
3945
3946 GtkRcStyle *wxWindowGTK::GTKCreateWidgetStyle(bool forceStyle)
3947 {
3948 // do we need to apply any changes at all?
3949 if ( !forceStyle &&
3950 !m_font.IsOk() &&
3951 !m_foregroundColour.IsOk() && !m_backgroundColour.IsOk() )
3952 {
3953 return NULL;
3954 }
3955
3956 GtkRcStyle *style = gtk_rc_style_new();
3957
3958 if ( m_font.IsOk() )
3959 {
3960 style->font_desc =
3961 pango_font_description_copy( m_font.GetNativeFontInfo()->description );
3962 }
3963
3964 int flagsNormal = 0,
3965 flagsPrelight = 0,
3966 flagsActive = 0,
3967 flagsInsensitive = 0;
3968
3969 if ( m_foregroundColour.IsOk() )
3970 {
3971 const GdkColor *fg = m_foregroundColour.GetColor();
3972
3973 style->fg[GTK_STATE_NORMAL] =
3974 style->text[GTK_STATE_NORMAL] = *fg;
3975 flagsNormal |= GTK_RC_FG | GTK_RC_TEXT;
3976
3977 style->fg[GTK_STATE_PRELIGHT] =
3978 style->text[GTK_STATE_PRELIGHT] = *fg;
3979 flagsPrelight |= GTK_RC_FG | GTK_RC_TEXT;
3980
3981 style->fg[GTK_STATE_ACTIVE] =
3982 style->text[GTK_STATE_ACTIVE] = *fg;
3983 flagsActive |= GTK_RC_FG | GTK_RC_TEXT;
3984 }
3985
3986 if ( m_backgroundColour.IsOk() )
3987 {
3988 const GdkColor *bg = m_backgroundColour.GetColor();
3989
3990 style->bg[GTK_STATE_NORMAL] =
3991 style->base[GTK_STATE_NORMAL] = *bg;
3992 flagsNormal |= GTK_RC_BG | GTK_RC_BASE;
3993
3994 style->bg[GTK_STATE_PRELIGHT] =
3995 style->base[GTK_STATE_PRELIGHT] = *bg;
3996 flagsPrelight |= GTK_RC_BG | GTK_RC_BASE;
3997
3998 style->bg[GTK_STATE_ACTIVE] =
3999 style->base[GTK_STATE_ACTIVE] = *bg;
4000 flagsActive |= GTK_RC_BG | GTK_RC_BASE;
4001
4002 style->bg[GTK_STATE_INSENSITIVE] =
4003 style->base[GTK_STATE_INSENSITIVE] = *bg;
4004 flagsInsensitive |= GTK_RC_BG | GTK_RC_BASE;
4005 }
4006
4007 style->color_flags[GTK_STATE_NORMAL] = (GtkRcFlags)flagsNormal;
4008 style->color_flags[GTK_STATE_PRELIGHT] = (GtkRcFlags)flagsPrelight;
4009 style->color_flags[GTK_STATE_ACTIVE] = (GtkRcFlags)flagsActive;
4010 style->color_flags[GTK_STATE_INSENSITIVE] = (GtkRcFlags)flagsInsensitive;
4011
4012 return style;
4013 }
4014
4015 void wxWindowGTK::GTKApplyWidgetStyle(bool forceStyle)
4016 {
4017 GtkRcStyle *style = GTKCreateWidgetStyle(forceStyle);
4018 if ( style )
4019 {
4020 DoApplyWidgetStyle(style);
4021 g_object_unref(style);
4022 }
4023
4024 // Style change may affect GTK+'s size calculation:
4025 InvalidateBestSize();
4026 }
4027
4028 void wxWindowGTK::DoApplyWidgetStyle(GtkRcStyle *style)
4029 {
4030 if ( m_wxwindow )
4031 {
4032 // block the signal temporarily to avoid sending
4033 // wxSysColourChangedEvents when we change the colours ourselves
4034 bool unblock = false;
4035 if ( IsTopLevel() )
4036 {
4037 unblock = true;
4038 g_signal_handlers_block_by_func(
4039 m_wxwindow, (void *)gtk_window_style_set_callback, this);
4040 }
4041
4042 gtk_widget_modify_style(m_wxwindow, style);
4043
4044 if ( unblock )
4045 {
4046 g_signal_handlers_unblock_by_func(
4047 m_wxwindow, (void *)gtk_window_style_set_callback, this);
4048 }
4049 }
4050 else
4051 {
4052 gtk_widget_modify_style(m_widget, style);
4053 }
4054 }
4055
4056 bool wxWindowGTK::SetBackgroundStyle(wxBackgroundStyle style)
4057 {
4058 if (!wxWindowBase::SetBackgroundStyle(style))
4059 return false;
4060
4061 GdkWindow *window;
4062 if ( m_wxwindow )
4063 {
4064 window = GTKGetDrawingWindow();
4065 }
4066 else
4067 {
4068 GtkWidget * const w = GetConnectWidget();
4069 window = w ? gtk_widget_get_window(w) : NULL;
4070 }
4071
4072 bool wantNoBackPixmap = style == wxBG_STYLE_PAINT || style == wxBG_STYLE_TRANSPARENT;
4073
4074 if ( wantNoBackPixmap )
4075 {
4076 if (window)
4077 {
4078 // Make sure GDK/X11 doesn't refresh the window
4079 // automatically.
4080 gdk_window_set_back_pixmap( window, NULL, FALSE );
4081 m_needsStyleChange = false;
4082 }
4083 else // window not realized yet
4084 {
4085 // Do when window is realized
4086 m_needsStyleChange = true;
4087 }
4088
4089 // Don't apply widget style, or we get a grey background
4090 }
4091 else
4092 {
4093 // apply style change (forceStyle=true so that new style is applied
4094 // even if the bg colour changed from valid to wxNullColour):
4095 GTKApplyWidgetStyle(true);
4096 }
4097
4098 return true;
4099 }
4100
4101 bool wxWindowGTK::IsTransparentBackgroundSupported(wxString* reason) const
4102 {
4103 #if wxGTK_HAS_COMPOSITING_SUPPORT
4104 if (gtk_check_version(wxGTK_VERSION_REQUIRED_FOR_COMPOSITING) != NULL)
4105 {
4106 if (reason)
4107 {
4108 *reason = _("GTK+ installed on this machine is too old to "
4109 "support screen compositing, please install "
4110 "GTK+ 2.12 or later.");
4111 }
4112
4113 return false;
4114 }
4115
4116 // NB: We don't check here if the particular kind of widget supports
4117 // transparency, we check only if it would be possible for a generic window
4118
4119 wxCHECK_MSG ( m_widget, false, "Window must be created first" );
4120
4121 if (!gdk_screen_is_composited(gtk_widget_get_screen(m_widget)))
4122 {
4123 if (reason)
4124 {
4125 *reason = _("Compositing not supported by this system, "
4126 "please enable it in your Window Manager.");
4127 }
4128
4129 return false;
4130 }
4131
4132 return true;
4133 #else
4134 if (reason)
4135 {
4136 *reason = _("This program was compiled with a too old version of GTK+, "
4137 "please rebuild with GTK+ 2.12 or newer.");
4138 }
4139 #endif // wxGTK_HAS_COMPOSITING_SUPPORT/!wxGTK_HAS_COMPOSITING_SUPPORT
4140
4141 return false;
4142 }
4143
4144 // ----------------------------------------------------------------------------
4145 // Pop-up menu stuff
4146 // ----------------------------------------------------------------------------
4147
4148 #if wxUSE_MENUS_NATIVE
4149
4150 extern "C" {
4151 static
4152 void wxPopupMenuPositionCallback( GtkMenu *menu,
4153 gint *x, gint *y,
4154 gboolean * WXUNUSED(whatever),
4155 gpointer user_data )
4156 {
4157 // ensure that the menu appears entirely on screen
4158 GtkRequisition req;
4159 gtk_widget_get_child_requisition(GTK_WIDGET(menu), &req);
4160
4161 wxSize sizeScreen = wxGetDisplaySize();
4162 wxPoint *pos = (wxPoint*)user_data;
4163
4164 gint xmax = sizeScreen.x - req.width,
4165 ymax = sizeScreen.y - req.height;
4166
4167 *x = pos->x < xmax ? pos->x : xmax;
4168 *y = pos->y < ymax ? pos->y : ymax;
4169 }
4170 }
4171
4172 bool wxWindowGTK::DoPopupMenu( wxMenu *menu, int x, int y )
4173 {
4174 wxCHECK_MSG( m_widget != NULL, false, wxT("invalid window") );
4175
4176 // For compatibility with other ports, pretend that the window showing the
4177 // menu has focus while the menu is shown. This is needed because the popup
4178 // menu actually steals the focus from the window it's associated it in
4179 // wxGTK unlike, say, wxMSW.
4180 wxWindowGTK* const oldPendingFocus = gs_pendingFocus;
4181 gs_pendingFocus = this;
4182 wxON_BLOCK_EXIT_SET( gs_pendingFocus, oldPendingFocus );
4183
4184 menu->UpdateUI();
4185
4186 wxPoint pos;
4187 gpointer userdata;
4188 GtkMenuPositionFunc posfunc;
4189 if ( x == -1 && y == -1 )
4190 {
4191 // use GTK's default positioning algorithm
4192 userdata = NULL;
4193 posfunc = NULL;
4194 }
4195 else
4196 {
4197 pos = ClientToScreen(wxPoint(x, y));
4198 userdata = &pos;
4199 posfunc = wxPopupMenuPositionCallback;
4200 }
4201
4202 menu->m_popupShown = true;
4203 gtk_menu_popup(
4204 GTK_MENU(menu->m_menu),
4205 NULL, // parent menu shell
4206 NULL, // parent menu item
4207 posfunc, // function to position it
4208 userdata, // client data
4209 0, // button used to activate it
4210 gtk_get_current_event_time()
4211 );
4212
4213 while (menu->m_popupShown)
4214 {
4215 gtk_main_iteration();
4216 }
4217
4218 return true;
4219 }
4220
4221 #endif // wxUSE_MENUS_NATIVE
4222
4223 #if wxUSE_DRAG_AND_DROP
4224
4225 void wxWindowGTK::SetDropTarget( wxDropTarget *dropTarget )
4226 {
4227 wxCHECK_RET( m_widget != NULL, wxT("invalid window") );
4228
4229 GtkWidget *dnd_widget = GetConnectWidget();
4230
4231 if (m_dropTarget) m_dropTarget->GtkUnregisterWidget( dnd_widget );
4232
4233 if (m_dropTarget) delete m_dropTarget;
4234 m_dropTarget = dropTarget;
4235
4236 if (m_dropTarget) m_dropTarget->GtkRegisterWidget( dnd_widget );
4237 }
4238
4239 #endif // wxUSE_DRAG_AND_DROP
4240
4241 GtkWidget* wxWindowGTK::GetConnectWidget()
4242 {
4243 GtkWidget *connect_widget = m_widget;
4244 if (m_wxwindow) connect_widget = m_wxwindow;
4245
4246 return connect_widget;
4247 }
4248
4249 bool wxWindowGTK::GTKIsOwnWindow(GdkWindow *window) const
4250 {
4251 wxArrayGdkWindows windowsThis;
4252 GdkWindow * const winThis = GTKGetWindow(windowsThis);
4253
4254 return winThis ? window == winThis
4255 : windowsThis.Index(window) != wxNOT_FOUND;
4256 }
4257
4258 GdkWindow *wxWindowGTK::GTKGetWindow(wxArrayGdkWindows& WXUNUSED(windows)) const
4259 {
4260 return m_wxwindow ? GTKGetDrawingWindow() : gtk_widget_get_window(m_widget);
4261 }
4262
4263 bool wxWindowGTK::SetFont( const wxFont &font )
4264 {
4265 wxCHECK_MSG( m_widget != NULL, false, wxT("invalid window") );
4266
4267 if (!wxWindowBase::SetFont(font))
4268 return false;
4269
4270 // apply style change (forceStyle=true so that new style is applied
4271 // even if the font changed from valid to wxNullFont):
4272 GTKApplyWidgetStyle(true);
4273
4274 return true;
4275 }
4276
4277 void wxWindowGTK::DoCaptureMouse()
4278 {
4279 wxCHECK_RET( m_widget != NULL, wxT("invalid window") );
4280
4281 GdkWindow *window = NULL;
4282 if (m_wxwindow)
4283 window = GTKGetDrawingWindow();
4284 else
4285 window = gtk_widget_get_window(GetConnectWidget());
4286
4287 wxCHECK_RET( window, wxT("CaptureMouse() failed") );
4288
4289 const wxCursor* cursor = &m_cursor;
4290 if (!cursor->IsOk())
4291 cursor = wxSTANDARD_CURSOR;
4292
4293 gdk_pointer_grab( window, FALSE,
4294 (GdkEventMask)
4295 (GDK_BUTTON_PRESS_MASK |
4296 GDK_BUTTON_RELEASE_MASK |
4297 GDK_POINTER_MOTION_HINT_MASK |
4298 GDK_POINTER_MOTION_MASK),
4299 NULL,
4300 cursor->GetCursor(),
4301 (guint32)GDK_CURRENT_TIME );
4302 g_captureWindow = this;
4303 g_captureWindowHasMouse = true;
4304 }
4305
4306 void wxWindowGTK::DoReleaseMouse()
4307 {
4308 wxCHECK_RET( m_widget != NULL, wxT("invalid window") );
4309
4310 wxCHECK_RET( g_captureWindow, wxT("can't release mouse - not captured") );
4311
4312 g_captureWindow = NULL;
4313
4314 GdkWindow *window = NULL;
4315 if (m_wxwindow)
4316 window = GTKGetDrawingWindow();
4317 else
4318 window = gtk_widget_get_window(GetConnectWidget());
4319
4320 if (!window)
4321 return;
4322
4323 gdk_pointer_ungrab ( (guint32)GDK_CURRENT_TIME );
4324 }
4325
4326 void wxWindowGTK::GTKReleaseMouseAndNotify()
4327 {
4328 DoReleaseMouse();
4329 wxMouseCaptureLostEvent evt(GetId());
4330 evt.SetEventObject( this );
4331 HandleWindowEvent( evt );
4332 }
4333
4334 /* static */
4335 wxWindow *wxWindowBase::GetCapture()
4336 {
4337 return (wxWindow *)g_captureWindow;
4338 }
4339
4340 bool wxWindowGTK::IsRetained() const
4341 {
4342 return false;
4343 }
4344
4345 void wxWindowGTK::SetScrollbar(int orient,
4346 int pos,
4347 int thumbVisible,
4348 int range,
4349 bool WXUNUSED(update))
4350 {
4351 const int dir = ScrollDirFromOrient(orient);
4352 GtkRange* const sb = m_scrollBar[dir];
4353 wxCHECK_RET( sb, wxT("this window is not scrollable") );
4354
4355 if (range <= 0)
4356 {
4357 // GtkRange requires upper > lower
4358 range =
4359 thumbVisible = 1;
4360 }
4361
4362 g_signal_handlers_block_by_func(
4363 sb, (void*)gtk_scrollbar_value_changed, this);
4364
4365 gtk_range_set_increments(sb, 1, thumbVisible);
4366 gtk_adjustment_set_page_size(gtk_range_get_adjustment(sb), thumbVisible);
4367 gtk_range_set_range(sb, 0, range);
4368 gtk_range_set_value(sb, pos);
4369 m_scrollPos[dir] = gtk_range_get_value(sb);
4370
4371 g_signal_handlers_unblock_by_func(
4372 sb, (void*)gtk_scrollbar_value_changed, this);
4373 }
4374
4375 void wxWindowGTK::SetScrollPos(int orient, int pos, bool WXUNUSED(refresh))
4376 {
4377 const int dir = ScrollDirFromOrient(orient);
4378 GtkRange * const sb = m_scrollBar[dir];
4379 wxCHECK_RET( sb, wxT("this window is not scrollable") );
4380
4381 // This check is more than an optimization. Without it, the slider
4382 // will not move smoothly while tracking when using wxScrollHelper.
4383 if (GetScrollPos(orient) != pos)
4384 {
4385 g_signal_handlers_block_by_func(
4386 sb, (void*)gtk_scrollbar_value_changed, this);
4387
4388 gtk_range_set_value(sb, pos);
4389 m_scrollPos[dir] = gtk_range_get_value(sb);
4390
4391 g_signal_handlers_unblock_by_func(
4392 sb, (void*)gtk_scrollbar_value_changed, this);
4393 }
4394 }
4395
4396 int wxWindowGTK::GetScrollThumb(int orient) const
4397 {
4398 GtkRange * const sb = m_scrollBar[ScrollDirFromOrient(orient)];
4399 wxCHECK_MSG( sb, 0, wxT("this window is not scrollable") );
4400
4401 return wxRound(gtk_adjustment_get_page_size(gtk_range_get_adjustment(sb)));
4402 }
4403
4404 int wxWindowGTK::GetScrollPos( int orient ) const
4405 {
4406 GtkRange * const sb = m_scrollBar[ScrollDirFromOrient(orient)];
4407 wxCHECK_MSG( sb, 0, wxT("this window is not scrollable") );
4408
4409 return wxRound(gtk_range_get_value(sb));
4410 }
4411
4412 int wxWindowGTK::GetScrollRange( int orient ) const
4413 {
4414 GtkRange * const sb = m_scrollBar[ScrollDirFromOrient(orient)];
4415 wxCHECK_MSG( sb, 0, wxT("this window is not scrollable") );
4416
4417 return wxRound(gtk_adjustment_get_upper(gtk_range_get_adjustment(sb)));
4418 }
4419
4420 // Determine if increment is the same as +/-x, allowing for some small
4421 // difference due to possible inexactness in floating point arithmetic
4422 static inline bool IsScrollIncrement(double increment, double x)
4423 {
4424 wxASSERT(increment > 0);
4425 const double tolerance = 1.0 / 1024;
4426 return fabs(increment - fabs(x)) < tolerance;
4427 }
4428
4429 wxEventType wxWindowGTK::GTKGetScrollEventType(GtkRange* range)
4430 {
4431 wxASSERT(range == m_scrollBar[0] || range == m_scrollBar[1]);
4432
4433 const int barIndex = range == m_scrollBar[1];
4434
4435 const double value = gtk_range_get_value(range);
4436
4437 // save previous position
4438 const double oldPos = m_scrollPos[barIndex];
4439 // update current position
4440 m_scrollPos[barIndex] = value;
4441 // If event should be ignored, or integral position has not changed
4442 if (!m_hasVMT || g_blockEventsOnDrag || wxRound(value) == wxRound(oldPos))
4443 {
4444 return wxEVT_NULL;
4445 }
4446
4447 wxEventType eventType = wxEVT_SCROLL_THUMBTRACK;
4448 if (!m_isScrolling)
4449 {
4450 // Difference from last change event
4451 const double diff = value - oldPos;
4452 const bool isDown = diff > 0;
4453
4454 GtkAdjustment* adj = gtk_range_get_adjustment(range);
4455 if (IsScrollIncrement(gtk_adjustment_get_step_increment(adj), diff))
4456 {
4457 eventType = isDown ? wxEVT_SCROLL_LINEDOWN : wxEVT_SCROLL_LINEUP;
4458 }
4459 else if (IsScrollIncrement(gtk_adjustment_get_page_increment(adj), diff))
4460 {
4461 eventType = isDown ? wxEVT_SCROLL_PAGEDOWN : wxEVT_SCROLL_PAGEUP;
4462 }
4463 else if (m_mouseButtonDown)
4464 {
4465 // Assume track event
4466 m_isScrolling = true;
4467 }
4468 }
4469 return eventType;
4470 }
4471
4472 void wxWindowGTK::ScrollWindow( int dx, int dy, const wxRect* WXUNUSED(rect) )
4473 {
4474 wxCHECK_RET( m_widget != NULL, wxT("invalid window") );
4475
4476 wxCHECK_RET( m_wxwindow != NULL, wxT("window needs client area for scrolling") );
4477
4478 // No scrolling requested.
4479 if ((dx == 0) && (dy == 0)) return;
4480
4481 m_clipPaintRegion = true;
4482
4483 WX_PIZZA(m_wxwindow)->scroll(dx, dy);
4484
4485 m_clipPaintRegion = false;
4486
4487 #if wxUSE_CARET
4488 bool restoreCaret = (GetCaret() != NULL && GetCaret()->IsVisible());
4489 if (restoreCaret)
4490 {
4491 wxRect caretRect(GetCaret()->GetPosition(), GetCaret()->GetSize());
4492 if (dx > 0)
4493 caretRect.width += dx;
4494 else
4495 {
4496 caretRect.x += dx; caretRect.width -= dx;
4497 }
4498 if (dy > 0)
4499 caretRect.height += dy;
4500 else
4501 {
4502 caretRect.y += dy; caretRect.height -= dy;
4503 }
4504
4505 RefreshRect(caretRect);
4506 }
4507 #endif // wxUSE_CARET
4508 }
4509
4510 void wxWindowGTK::GTKScrolledWindowSetBorder(GtkWidget* w, int wxstyle)
4511 {
4512 //RN: Note that static controls usually have no border on gtk, so maybe
4513 //it makes sense to treat that as simply no border at the wx level
4514 //as well...
4515 if (!(wxstyle & wxNO_BORDER) && !(wxstyle & wxBORDER_STATIC))
4516 {
4517 GtkShadowType gtkstyle;
4518
4519 if(wxstyle & wxBORDER_RAISED)
4520 gtkstyle = GTK_SHADOW_OUT;
4521 else if ((wxstyle & wxBORDER_SUNKEN) || (wxstyle & wxBORDER_THEME))
4522 gtkstyle = GTK_SHADOW_IN;
4523 #if 0
4524 // Now obsolete
4525 else if (wxstyle & wxBORDER_DOUBLE)
4526 gtkstyle = GTK_SHADOW_ETCHED_IN;
4527 #endif
4528 else //default
4529 gtkstyle = GTK_SHADOW_IN;
4530
4531 gtk_scrolled_window_set_shadow_type( GTK_SCROLLED_WINDOW(w),
4532 gtkstyle );
4533 }
4534 }
4535
4536 // Find the wxWindow at the current mouse position, also returning the mouse
4537 // position.
4538 wxWindow* wxFindWindowAtPointer(wxPoint& pt)
4539 {
4540 pt = wxGetMousePosition();
4541 wxWindow* found = wxFindWindowAtPoint(pt);
4542 return found;
4543 }
4544
4545 // Get the current mouse position.
4546 wxPoint wxGetMousePosition()
4547 {
4548 wxWindow* tlw = NULL;
4549 if (!wxTopLevelWindows.empty())
4550 tlw = wxTopLevelWindows.front();
4551 GdkDisplay* display;
4552 if (tlw && tlw->m_widget)
4553 display = gtk_widget_get_display(tlw->m_widget);
4554 else
4555 display = gdk_display_get_default();
4556
4557 int x, y;
4558 gdk_display_get_pointer(display, NULL, &x, &y, NULL);
4559 return wxPoint(x, y);
4560 }
4561
4562 GdkWindow* wxWindowGTK::GTKGetDrawingWindow() const
4563 {
4564 GdkWindow* window = NULL;
4565 if (m_wxwindow)
4566 window = gtk_widget_get_window(m_wxwindow);
4567 return window;
4568 }
4569
4570 // ----------------------------------------------------------------------------
4571 // freeze/thaw
4572 // ----------------------------------------------------------------------------
4573
4574 extern "C"
4575 {
4576
4577 // this is called if we attempted to freeze unrealized widget when it finally
4578 // is realized (and so can be frozen):
4579 static void wx_frozen_widget_realize(GtkWidget* w, wxWindowGTK* win)
4580 {
4581 wxASSERT( w && gtk_widget_get_has_window(w) );
4582 wxASSERT( gtk_widget_get_realized(w) );
4583
4584 g_signal_handlers_disconnect_by_func
4585 (
4586 w,
4587 (void*)wx_frozen_widget_realize,
4588 win
4589 );
4590
4591 GdkWindow* window;
4592 if (w == win->m_wxwindow)
4593 window = win->GTKGetDrawingWindow();
4594 else
4595 window = gtk_widget_get_window(w);
4596 gdk_window_freeze_updates(window);
4597 }
4598
4599 } // extern "C"
4600
4601 void wxWindowGTK::GTKFreezeWidget(GtkWidget *w)
4602 {
4603 if ( !w || !gtk_widget_get_has_window(w) )
4604 return; // window-less widget, cannot be frozen
4605
4606 GdkWindow* window = gtk_widget_get_window(w);
4607 if (window == NULL)
4608 {
4609 // we can't thaw unrealized widgets because they don't have GdkWindow,
4610 // so set it up to be done immediately after realization:
4611 g_signal_connect_after
4612 (
4613 w,
4614 "realize",
4615 G_CALLBACK(wx_frozen_widget_realize),
4616 this
4617 );
4618 return;
4619 }
4620
4621 if (w == m_wxwindow)
4622 window = GTKGetDrawingWindow();
4623 gdk_window_freeze_updates(window);
4624 }
4625
4626 void wxWindowGTK::GTKThawWidget(GtkWidget *w)
4627 {
4628 if ( !w || !gtk_widget_get_has_window(w) )
4629 return; // window-less widget, cannot be frozen
4630
4631 GdkWindow* window = gtk_widget_get_window(w);
4632 if (window == NULL)
4633 {
4634 // the widget wasn't realized yet, no need to thaw
4635 g_signal_handlers_disconnect_by_func
4636 (
4637 w,
4638 (void*)wx_frozen_widget_realize,
4639 this
4640 );
4641 return;
4642 }
4643
4644 if (w == m_wxwindow)
4645 window = GTKGetDrawingWindow();
4646 gdk_window_thaw_updates(window);
4647 }
4648
4649 void wxWindowGTK::DoFreeze()
4650 {
4651 GTKFreezeWidget(m_widget);
4652 if ( m_wxwindow && m_widget != m_wxwindow )
4653 GTKFreezeWidget(m_wxwindow);
4654 }
4655
4656 void wxWindowGTK::DoThaw()
4657 {
4658 GTKThawWidget(m_widget);
4659 if ( m_wxwindow && m_widget != m_wxwindow )
4660 GTKThawWidget(m_wxwindow);
4661 }
wxWidgets (Impactor)