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remove AdjustForParentClientOrigin call, it does nothing in wxGTK
[wxWidgets.git] / src / gtk / window.cpp
1 /////////////////////////////////////////////////////////////////////////////
2 // Name: src/gtk/window.cpp
3 // Purpose: wxWindowGTK implementation
4 // Author: Robert Roebling
5 // Id: $Id$
6 // Copyright: (c) 1998 Robert Roebling, Julian Smart
7 // Licence: wxWindows licence
8 /////////////////////////////////////////////////////////////////////////////
9
10 // For compilers that support precompilation, includes "wx.h".
11 #include "wx/wxprec.h"
12
13 #ifdef __VMS
14 #define XWarpPointer XWARPPOINTER
15 #endif
16
17 #include "wx/window.h"
18
19 #ifndef WX_PRECOMP
20 #include "wx/log.h"
21 #include "wx/app.h"
22 #include "wx/toplevel.h"
23 #include "wx/dcclient.h"
24 #include "wx/menu.h"
25 #include "wx/settings.h"
26 #include "wx/msgdlg.h"
27 #include "wx/math.h"
28 #endif
29
30 #include "wx/dnd.h"
31 #include "wx/tooltip.h"
32 #include "wx/caret.h"
33 #include "wx/fontutil.h"
34 #include "wx/scopeguard.h"
35 #include "wx/sysopt.h"
36
37 #include <ctype.h>
38
39 #include "wx/gtk/private.h"
40 #include "wx/gtk/private/win_gtk.h"
41 #include "wx/gtk/private/event.h"
42 using namespace wxGTKImpl;
43
44 #ifdef GDK_WINDOWING_X11
45 #include <gdk/gdkx.h>
46 #else
47 typedef guint KeySym;
48 #endif
49
50 #include <gdk/gdkkeysyms.h>
51 #if GTK_CHECK_VERSION(3,0,0)
52 #include <gdk/gdkkeysyms-compat.h>
53 #endif
54
55 // gdk_window_set_composited() is only supported since 2.12
56 #define wxGTK_VERSION_REQUIRED_FOR_COMPOSITING 2,12,0
57 #define wxGTK_HAS_COMPOSITING_SUPPORT GTK_CHECK_VERSION(2,12,0)
58
59 //-----------------------------------------------------------------------------
60 // documentation on internals
61 //-----------------------------------------------------------------------------
62
63 /*
64 I have been asked several times about writing some documentation about
65 the GTK port of wxWidgets, especially its internal structures. Obviously,
66 you cannot understand wxGTK without knowing a little about the GTK, but
67 some more information about what the wxWindow, which is the base class
68 for all other window classes, does seems required as well.
69
70 I)
71
72 What does wxWindow do? It contains the common interface for the following
73 jobs of its descendants:
74
75 1) Define the rudimentary behaviour common to all window classes, such as
76 resizing, intercepting user input (so as to make it possible to use these
77 events for special purposes in a derived class), window names etc.
78
79 2) Provide the possibility to contain and manage children, if the derived
80 class is allowed to contain children, which holds true for those window
81 classes which do not display a native GTK widget. To name them, these
82 classes are wxPanel, wxScrolledWindow, wxDialog, wxFrame. The MDI frame-
83 work classes are a special case and are handled a bit differently from
84 the rest. The same holds true for the wxNotebook class.
85
86 3) Provide the possibility to draw into a client area of a window. This,
87 too, only holds true for classes that do not display a native GTK widget
88 as above.
89
90 4) Provide the entire mechanism for scrolling widgets. This actual inter-
91 face for this is usually in wxScrolledWindow, but the GTK implementation
92 is in this class.
93
94 5) A multitude of helper or extra methods for special purposes, such as
95 Drag'n'Drop, managing validators etc.
96
97 6) Display a border (sunken, raised, simple or none).
98
99 Normally one might expect, that one wxWidgets window would always correspond
100 to one GTK widget. Under GTK, there is no such all-round widget that has all
101 the functionality. Moreover, the GTK defines a client area as a different
102 widget from the actual widget you are handling. Last but not least some
103 special classes (e.g. wxFrame) handle different categories of widgets and
104 still have the possibility to draw something in the client area.
105 It was therefore required to write a special purpose GTK widget, that would
106 represent a client area in the sense of wxWidgets capable to do the jobs
107 2), 3) and 4). I have written this class and it resides in win_gtk.c of
108 this directory.
109
110 All windows must have a widget, with which they interact with other under-
111 lying GTK widgets. It is this widget, e.g. that has to be resized etc and
112 the wxWindow class has a member variable called m_widget which holds a
113 pointer to this widget. When the window class represents a GTK native widget,
114 this is (in most cases) the only GTK widget the class manages. E.g. the
115 wxStaticText class handles only a GtkLabel widget a pointer to which you
116 can find in m_widget (defined in wxWindow)
117
118 When the class has a client area for drawing into and for containing children
119 it has to handle the client area widget (of the type wxPizza, defined in
120 win_gtk.cpp), but there could be any number of widgets, handled by a class.
121 The common rule for all windows is only, that the widget that interacts with
122 the rest of GTK must be referenced in m_widget and all other widgets must be
123 children of this widget on the GTK level. The top-most widget, which also
124 represents the client area, must be in the m_wxwindow field and must be of
125 the type wxPizza.
126
127 As I said, the window classes that display a GTK native widget only have
128 one widget, so in the case of e.g. the wxButton class m_widget holds a
129 pointer to a GtkButton widget. But windows with client areas (for drawing
130 and children) have a m_widget field that is a pointer to a GtkScrolled-
131 Window and a m_wxwindow field that is pointer to a wxPizza and this
132 one is (in the GTK sense) a child of the GtkScrolledWindow.
133
134 If the m_wxwindow field is set, then all input to this widget is inter-
135 cepted and sent to the wxWidgets class. If not, all input to the widget
136 that gets pointed to by m_widget gets intercepted and sent to the class.
137
138 II)
139
140 The design of scrolling in wxWidgets is markedly different from that offered
141 by the GTK itself and therefore we cannot simply take it as it is. In GTK,
142 clicking on a scrollbar belonging to scrolled window will inevitably move
143 the window. In wxWidgets, the scrollbar will only emit an event, send this
144 to (normally) a wxScrolledWindow and that class will call ScrollWindow()
145 which actually moves the window and its sub-windows. Note that wxPizza
146 memorizes how much it has been scrolled but that wxWidgets forgets this
147 so that the two coordinates systems have to be kept in synch. This is done
148 in various places using the pizza->m_scroll_x and pizza->m_scroll_y values.
149
150 III)
151
152 Singularly the most broken code in GTK is the code that is supposed to
153 inform subwindows (child windows) about new positions. Very often, duplicate
154 events are sent without changes in size or position, equally often no
155 events are sent at all (All this is due to a bug in the GtkContainer code
156 which got fixed in GTK 1.2.6). For that reason, wxGTK completely ignores
157 GTK's own system and it simply waits for size events for toplevel windows
158 and then iterates down the respective size events to all window. This has
159 the disadvantage that windows might get size events before the GTK widget
160 actually has the reported size. This doesn't normally pose any problem, but
161 the OpenGL drawing routines rely on correct behaviour. Therefore, I have
162 added the m_nativeSizeEvents flag, which is true only for the OpenGL canvas,
163 i.e. the wxGLCanvas will emit a size event, when (and not before) the X11
164 window that is used for OpenGL output really has that size (as reported by
165 GTK).
166
167 IV)
168
169 If someone at some point of time feels the immense desire to have a look at,
170 change or attempt to optimise the Refresh() logic, this person will need an
171 intimate understanding of what "draw" and "expose" events are and what
172 they are used for, in particular when used in connection with GTK's
173 own windowless widgets. Beware.
174
175 V)
176
177 Cursors, too, have been a constant source of pleasure. The main difficulty
178 is that a GdkWindow inherits a cursor if the programmer sets a new cursor
179 for the parent. To prevent this from doing too much harm, SetCursor calls
180 GTKUpdateCursor, which will recursively re-set the cursors of all child windows.
181 Also don't forget that cursors (like much else) are connected to GdkWindows,
182 not GtkWidgets and that the "window" field of a GtkWidget might very well
183 point to the GdkWindow of the parent widget (-> "window-less widget") and
184 that the two obviously have very different meanings.
185 */
186
187 //-----------------------------------------------------------------------------
188 // data
189 //-----------------------------------------------------------------------------
190
191 // Don't allow event propagation during drag
192 bool g_blockEventsOnDrag;
193 // Don't allow mouse event propagation during scroll
194 bool g_blockEventsOnScroll;
195 extern wxCursor g_globalCursor;
196
197 // mouse capture state: the window which has it and if the mouse is currently
198 // inside it
199 static wxWindowGTK *g_captureWindow = NULL;
200 static bool g_captureWindowHasMouse = false;
201
202 // The window that currently has focus:
203 static wxWindowGTK *gs_currentFocus = NULL;
204 // The window that is scheduled to get focus in the next event loop iteration
205 // or NULL if there's no pending focus change:
206 static wxWindowGTK *gs_pendingFocus = NULL;
207
208 // the window that has deferred focus-out event pending, if any (see
209 // GTKAddDeferredFocusOut() for details)
210 static wxWindowGTK *gs_deferredFocusOut = NULL;
211
212 // global variables because GTK+ DnD want to have the
213 // mouse event that caused it
214 GdkEvent *g_lastMouseEvent = NULL;
215 int g_lastButtonNumber = 0;
216
217 //-----------------------------------------------------------------------------
218 // debug
219 //-----------------------------------------------------------------------------
220
221 // the trace mask used for the focus debugging messages
222 #define TRACE_FOCUS wxT("focus")
223
224 //-----------------------------------------------------------------------------
225 // "size_request" of m_widget
226 //-----------------------------------------------------------------------------
227
228 extern "C" {
229 static void
230 wxgtk_window_size_request_callback(GtkWidget * WXUNUSED(widget),
231 GtkRequisition *requisition,
232 wxWindow * win)
233 {
234 int w, h;
235 win->GetSize( &w, &h );
236 if (w < 2)
237 w = 2;
238 if (h < 2)
239 h = 2;
240
241 requisition->height = h;
242 requisition->width = w;
243 }
244 }
245
246 //-----------------------------------------------------------------------------
247 // "expose_event" of m_wxwindow
248 //-----------------------------------------------------------------------------
249
250 extern "C" {
251 static gboolean
252 gtk_window_expose_callback( GtkWidget*,
253 GdkEventExpose *gdk_event,
254 wxWindow *win )
255 {
256 if (gdk_event->window == win->GTKGetDrawingWindow())
257 {
258 win->GetUpdateRegion() = wxRegion( gdk_event->region );
259 win->GtkSendPaintEvents();
260 }
261 // Let parent window draw window-less widgets
262 return FALSE;
263 }
264 }
265
266 #ifndef __WXUNIVERSAL__
267 //-----------------------------------------------------------------------------
268 // "expose_event" from m_wxwindow->parent, for drawing border
269 //-----------------------------------------------------------------------------
270
271 extern "C" {
272 static gboolean
273 expose_event_border(GtkWidget* widget, GdkEventExpose* gdk_event, wxWindow* win)
274 {
275 if (gdk_event->window != gtk_widget_get_parent_window(win->m_wxwindow))
276 return false;
277
278 if (!win->IsShown())
279 return false;
280
281 GtkAllocation alloc;
282 gtk_widget_get_allocation(win->m_wxwindow, &alloc);
283 const int x = alloc.x;
284 const int y = alloc.y;
285 const int w = alloc.width;
286 const int h = alloc.height;
287
288 if (w <= 0 || h <= 0)
289 return false;
290
291 if (win->HasFlag(wxBORDER_SIMPLE))
292 {
293 gdk_draw_rectangle(gdk_event->window,
294 gtk_widget_get_style(widget)->black_gc, false, x, y, w - 1, h - 1);
295 }
296 else
297 {
298 GtkShadowType shadow = GTK_SHADOW_IN;
299 if (win->HasFlag(wxBORDER_RAISED))
300 shadow = GTK_SHADOW_OUT;
301
302 // Style detail to use
303 const char* detail;
304 if (win->m_widget == win->m_wxwindow)
305 // for non-scrollable wxWindows
306 detail = "entry";
307 else
308 // for scrollable ones
309 detail = "viewport";
310
311 // clip rect is required to avoid painting background
312 // over upper left (w,h) of parent window
313 GdkRectangle clipRect = { x, y, w, h };
314 gtk_paint_shadow(
315 gtk_widget_get_style(win->m_wxwindow), gdk_event->window, GTK_STATE_NORMAL,
316 shadow, &clipRect, wxGTKPrivate::GetEntryWidget(), detail, x, y, w, h);
317 }
318 return false;
319 }
320 }
321
322 //-----------------------------------------------------------------------------
323 // "parent_set" from m_wxwindow
324 //-----------------------------------------------------------------------------
325
326 extern "C" {
327 static void
328 parent_set(GtkWidget* widget, GtkWidget* old_parent, wxWindow* win)
329 {
330 if (old_parent)
331 {
332 g_signal_handlers_disconnect_by_func(
333 old_parent, (void*)expose_event_border, win);
334 }
335 GtkWidget* parent = gtk_widget_get_parent(widget);
336 if (parent)
337 {
338 g_signal_connect_after(parent, "expose_event",
339 G_CALLBACK(expose_event_border), win);
340 }
341 }
342 }
343 #endif // !__WXUNIVERSAL__
344
345 //-----------------------------------------------------------------------------
346 // "key_press_event" from any window
347 //-----------------------------------------------------------------------------
348
349 // set WXTRACE to this to see the key event codes on the console
350 #define TRACE_KEYS wxT("keyevent")
351
352 // translates an X key symbol to WXK_XXX value
353 //
354 // if isChar is true it means that the value returned will be used for EVT_CHAR
355 // event and then we choose the logical WXK_XXX, i.e. '/' for GDK_KP_Divide,
356 // for example, while if it is false it means that the value is going to be
357 // used for KEY_DOWN/UP events and then we translate GDK_KP_Divide to
358 // WXK_NUMPAD_DIVIDE
359 static long wxTranslateKeySymToWXKey(KeySym keysym, bool isChar)
360 {
361 long key_code;
362
363 switch ( keysym )
364 {
365 // Shift, Control and Alt don't generate the CHAR events at all
366 case GDK_Shift_L:
367 case GDK_Shift_R:
368 key_code = isChar ? 0 : WXK_SHIFT;
369 break;
370 case GDK_Control_L:
371 case GDK_Control_R:
372 key_code = isChar ? 0 : WXK_CONTROL;
373 break;
374 case GDK_Meta_L:
375 case GDK_Meta_R:
376 case GDK_Alt_L:
377 case GDK_Alt_R:
378 case GDK_Super_L:
379 case GDK_Super_R:
380 key_code = isChar ? 0 : WXK_ALT;
381 break;
382
383 // neither do the toggle modifies
384 case GDK_Scroll_Lock:
385 key_code = isChar ? 0 : WXK_SCROLL;
386 break;
387
388 case GDK_Caps_Lock:
389 key_code = isChar ? 0 : WXK_CAPITAL;
390 break;
391
392 case GDK_Num_Lock:
393 key_code = isChar ? 0 : WXK_NUMLOCK;
394 break;
395
396
397 // various other special keys
398 case GDK_Menu:
399 key_code = WXK_MENU;
400 break;
401
402 case GDK_Help:
403 key_code = WXK_HELP;
404 break;
405
406 case GDK_BackSpace:
407 key_code = WXK_BACK;
408 break;
409
410 case GDK_ISO_Left_Tab:
411 case GDK_Tab:
412 key_code = WXK_TAB;
413 break;
414
415 case GDK_Linefeed:
416 case GDK_Return:
417 key_code = WXK_RETURN;
418 break;
419
420 case GDK_Clear:
421 key_code = WXK_CLEAR;
422 break;
423
424 case GDK_Pause:
425 key_code = WXK_PAUSE;
426 break;
427
428 case GDK_Select:
429 key_code = WXK_SELECT;
430 break;
431
432 case GDK_Print:
433 key_code = WXK_PRINT;
434 break;
435
436 case GDK_Execute:
437 key_code = WXK_EXECUTE;
438 break;
439
440 case GDK_Escape:
441 key_code = WXK_ESCAPE;
442 break;
443
444 // cursor and other extended keyboard keys
445 case GDK_Delete:
446 key_code = WXK_DELETE;
447 break;
448
449 case GDK_Home:
450 key_code = WXK_HOME;
451 break;
452
453 case GDK_Left:
454 key_code = WXK_LEFT;
455 break;
456
457 case GDK_Up:
458 key_code = WXK_UP;
459 break;
460
461 case GDK_Right:
462 key_code = WXK_RIGHT;
463 break;
464
465 case GDK_Down:
466 key_code = WXK_DOWN;
467 break;
468
469 case GDK_Prior: // == GDK_Page_Up
470 key_code = WXK_PAGEUP;
471 break;
472
473 case GDK_Next: // == GDK_Page_Down
474 key_code = WXK_PAGEDOWN;
475 break;
476
477 case GDK_End:
478 key_code = WXK_END;
479 break;
480
481 case GDK_Begin:
482 key_code = WXK_HOME;
483 break;
484
485 case GDK_Insert:
486 key_code = WXK_INSERT;
487 break;
488
489
490 // numpad keys
491 case GDK_KP_0:
492 case GDK_KP_1:
493 case GDK_KP_2:
494 case GDK_KP_3:
495 case GDK_KP_4:
496 case GDK_KP_5:
497 case GDK_KP_6:
498 case GDK_KP_7:
499 case GDK_KP_8:
500 case GDK_KP_9:
501 key_code = (isChar ? '0' : int(WXK_NUMPAD0)) + keysym - GDK_KP_0;
502 break;
503
504 case GDK_KP_Space:
505 key_code = isChar ? ' ' : int(WXK_NUMPAD_SPACE);
506 break;
507
508 case GDK_KP_Tab:
509 key_code = isChar ? WXK_TAB : WXK_NUMPAD_TAB;
510 break;
511
512 case GDK_KP_Enter:
513 key_code = isChar ? WXK_RETURN : WXK_NUMPAD_ENTER;
514 break;
515
516 case GDK_KP_F1:
517 key_code = isChar ? WXK_F1 : WXK_NUMPAD_F1;
518 break;
519
520 case GDK_KP_F2:
521 key_code = isChar ? WXK_F2 : WXK_NUMPAD_F2;
522 break;
523
524 case GDK_KP_F3:
525 key_code = isChar ? WXK_F3 : WXK_NUMPAD_F3;
526 break;
527
528 case GDK_KP_F4:
529 key_code = isChar ? WXK_F4 : WXK_NUMPAD_F4;
530 break;
531
532 case GDK_KP_Home:
533 key_code = isChar ? WXK_HOME : WXK_NUMPAD_HOME;
534 break;
535
536 case GDK_KP_Left:
537 key_code = isChar ? WXK_LEFT : WXK_NUMPAD_LEFT;
538 break;
539
540 case GDK_KP_Up:
541 key_code = isChar ? WXK_UP : WXK_NUMPAD_UP;
542 break;
543
544 case GDK_KP_Right:
545 key_code = isChar ? WXK_RIGHT : WXK_NUMPAD_RIGHT;
546 break;
547
548 case GDK_KP_Down:
549 key_code = isChar ? WXK_DOWN : WXK_NUMPAD_DOWN;
550 break;
551
552 case GDK_KP_Prior: // == GDK_KP_Page_Up
553 key_code = isChar ? WXK_PAGEUP : WXK_NUMPAD_PAGEUP;
554 break;
555
556 case GDK_KP_Next: // == GDK_KP_Page_Down
557 key_code = isChar ? WXK_PAGEDOWN : WXK_NUMPAD_PAGEDOWN;
558 break;
559
560 case GDK_KP_End:
561 key_code = isChar ? WXK_END : WXK_NUMPAD_END;
562 break;
563
564 case GDK_KP_Begin:
565 key_code = isChar ? WXK_HOME : WXK_NUMPAD_BEGIN;
566 break;
567
568 case GDK_KP_Insert:
569 key_code = isChar ? WXK_INSERT : WXK_NUMPAD_INSERT;
570 break;
571
572 case GDK_KP_Delete:
573 key_code = isChar ? WXK_DELETE : WXK_NUMPAD_DELETE;
574 break;
575
576 case GDK_KP_Equal:
577 key_code = isChar ? '=' : int(WXK_NUMPAD_EQUAL);
578 break;
579
580 case GDK_KP_Multiply:
581 key_code = isChar ? '*' : int(WXK_NUMPAD_MULTIPLY);
582 break;
583
584 case GDK_KP_Add:
585 key_code = isChar ? '+' : int(WXK_NUMPAD_ADD);
586 break;
587
588 case GDK_KP_Separator:
589 // FIXME: what is this?
590 key_code = isChar ? '.' : int(WXK_NUMPAD_SEPARATOR);
591 break;
592
593 case GDK_KP_Subtract:
594 key_code = isChar ? '-' : int(WXK_NUMPAD_SUBTRACT);
595 break;
596
597 case GDK_KP_Decimal:
598 key_code = isChar ? '.' : int(WXK_NUMPAD_DECIMAL);
599 break;
600
601 case GDK_KP_Divide:
602 key_code = isChar ? '/' : int(WXK_NUMPAD_DIVIDE);
603 break;
604
605
606 // function keys
607 case GDK_F1:
608 case GDK_F2:
609 case GDK_F3:
610 case GDK_F4:
611 case GDK_F5:
612 case GDK_F6:
613 case GDK_F7:
614 case GDK_F8:
615 case GDK_F9:
616 case GDK_F10:
617 case GDK_F11:
618 case GDK_F12:
619 key_code = WXK_F1 + keysym - GDK_F1;
620 break;
621
622 default:
623 key_code = 0;
624 }
625
626 return key_code;
627 }
628
629 static inline bool wxIsAsciiKeysym(KeySym ks)
630 {
631 return ks < 256;
632 }
633
634 static void wxFillOtherKeyEventFields(wxKeyEvent& event,
635 wxWindowGTK *win,
636 GdkEventKey *gdk_event)
637 {
638 event.SetTimestamp( gdk_event->time );
639 event.SetId(win->GetId());
640
641 event.m_shiftDown = (gdk_event->state & GDK_SHIFT_MASK) != 0;
642 event.m_controlDown = (gdk_event->state & GDK_CONTROL_MASK) != 0;
643 event.m_altDown = (gdk_event->state & GDK_MOD1_MASK) != 0;
644 event.m_metaDown = (gdk_event->state & GDK_META_MASK) != 0;
645
646 // Normally we take the state of modifiers directly from the low level GDK
647 // event but unfortunately GDK uses a different convention from MSW for the
648 // key events corresponding to the modifier keys themselves: in it, when
649 // e.g. Shift key is pressed, GDK_SHIFT_MASK is not set while it is set
650 // when Shift is released. Under MSW the situation is exactly reversed and
651 // the modifier corresponding to the key is set when it is pressed and
652 // unset when it is released. To ensure consistent behaviour between
653 // platforms (and because it seems to make slightly more sense, although
654 // arguably both behaviours are reasonable) we follow MSW here.
655 //
656 // Final notice: we set the flags to the desired value instead of just
657 // inverting them because they are not set correctly (i.e. in the same way
658 // as for the real events generated by the user) for wxUIActionSimulator-
659 // produced events and it seems better to keep that class code the same
660 // among all platforms and fix the discrepancy here instead of adding
661 // wxGTK-specific code to wxUIActionSimulator.
662 const bool isPress = gdk_event->type == GDK_KEY_PRESS;
663 switch ( gdk_event->keyval )
664 {
665 case GDK_Shift_L:
666 case GDK_Shift_R:
667 event.m_shiftDown = isPress;
668 break;
669
670 case GDK_Control_L:
671 case GDK_Control_R:
672 event.m_controlDown = isPress;
673 break;
674
675 case GDK_Alt_L:
676 case GDK_Alt_R:
677 event.m_altDown = isPress;
678 break;
679
680 case GDK_Meta_L:
681 case GDK_Meta_R:
682 case GDK_Super_L:
683 case GDK_Super_R:
684 event.m_metaDown = isPress;
685 break;
686 }
687
688 event.m_rawCode = (wxUint32) gdk_event->keyval;
689 event.m_rawFlags = gdk_event->hardware_keycode;
690
691 wxGetMousePosition(&event.m_x, &event.m_y);
692 win->ScreenToClient(&event.m_x, &event.m_y);
693 event.SetEventObject( win );
694 }
695
696
697 static bool
698 wxTranslateGTKKeyEventToWx(wxKeyEvent& event,
699 wxWindowGTK *win,
700 GdkEventKey *gdk_event)
701 {
702 // VZ: it seems that GDK_KEY_RELEASE event doesn't set event->string
703 // but only event->keyval which is quite useless to us, so remember
704 // the last character from GDK_KEY_PRESS and reuse it as last resort
705 //
706 // NB: should be MT-safe as we're always called from the main thread only
707 static struct
708 {
709 KeySym keysym;
710 long keycode;
711 } s_lastKeyPress = { 0, 0 };
712
713 KeySym keysym = gdk_event->keyval;
714
715 wxLogTrace(TRACE_KEYS, wxT("Key %s event: keysym = %ld"),
716 event.GetEventType() == wxEVT_KEY_UP ? wxT("release")
717 : wxT("press"),
718 keysym);
719
720 long key_code = wxTranslateKeySymToWXKey(keysym, false /* !isChar */);
721
722 if ( !key_code )
723 {
724 // do we have the translation or is it a plain ASCII character?
725 if ( (gdk_event->length == 1) || wxIsAsciiKeysym(keysym) )
726 {
727 // we should use keysym if it is ASCII as X does some translations
728 // like "I pressed while Control is down" => "Ctrl-I" == "TAB"
729 // which we don't want here (but which we do use for OnChar())
730 if ( !wxIsAsciiKeysym(keysym) )
731 {
732 keysym = (KeySym)gdk_event->string[0];
733 }
734
735 #ifdef GDK_WINDOWING_X11
736 // we want to always get the same key code when the same key is
737 // pressed regardless of the state of the modifiers, i.e. on a
738 // standard US keyboard pressing '5' or '%' ('5' key with
739 // Shift) should result in the same key code in OnKeyDown():
740 // '5' (although OnChar() will get either '5' or '%').
741 //
742 // to do it we first translate keysym to keycode (== scan code)
743 // and then back but always using the lower register
744 Display *dpy = (Display *)wxGetDisplay();
745 KeyCode keycode = XKeysymToKeycode(dpy, keysym);
746
747 wxLogTrace(TRACE_KEYS, wxT("\t-> keycode %d"), keycode);
748
749 KeySym keysymNormalized = XKeycodeToKeysym(dpy, keycode, 0);
750
751 // use the normalized, i.e. lower register, keysym if we've
752 // got one
753 key_code = keysymNormalized ? keysymNormalized : keysym;
754 #else
755 key_code = keysym;
756 #endif
757
758 // as explained above, we want to have lower register key codes
759 // normally but for the letter keys we want to have the upper ones
760 //
761 // NB: don't use XConvertCase() here, we want to do it for letters
762 // only
763 key_code = toupper(key_code);
764 }
765 else // non ASCII key, what to do?
766 {
767 // by default, ignore it
768 key_code = 0;
769
770 // but if we have cached information from the last KEY_PRESS
771 if ( gdk_event->type == GDK_KEY_RELEASE )
772 {
773 // then reuse it
774 if ( keysym == s_lastKeyPress.keysym )
775 {
776 key_code = s_lastKeyPress.keycode;
777 }
778 }
779 }
780
781 if ( gdk_event->type == GDK_KEY_PRESS )
782 {
783 // remember it to be reused for KEY_UP event later
784 s_lastKeyPress.keysym = keysym;
785 s_lastKeyPress.keycode = key_code;
786 }
787 }
788
789 wxLogTrace(TRACE_KEYS, wxT("\t-> wxKeyCode %ld"), key_code);
790
791 // sending unknown key events doesn't really make sense
792 if ( !key_code )
793 return false;
794
795 event.m_keyCode = key_code;
796
797 #if wxUSE_UNICODE
798 event.m_uniChar = gdk_keyval_to_unicode(key_code ? key_code : keysym);
799 if ( !event.m_uniChar && event.m_keyCode <= WXK_DELETE )
800 {
801 // Set Unicode key code to the ASCII equivalent for compatibility. E.g.
802 // let RETURN generate the key event with both key and Unicode key
803 // codes of 13.
804 event.m_uniChar = event.m_keyCode;
805 }
806 #endif // wxUSE_UNICODE
807
808 // now fill all the other fields
809 wxFillOtherKeyEventFields(event, win, gdk_event);
810
811 return true;
812 }
813
814
815 struct wxGtkIMData
816 {
817 GtkIMContext *context;
818 GdkEventKey *lastKeyEvent;
819
820 wxGtkIMData()
821 {
822 context = gtk_im_multicontext_new();
823 lastKeyEvent = NULL;
824 }
825 ~wxGtkIMData()
826 {
827 g_object_unref (context);
828 }
829 };
830
831 namespace
832 {
833
834 // Send wxEVT_CHAR_HOOK event to the parent of the window and return true only
835 // if it was processed (and not skipped).
836 bool SendCharHookEvent(const wxKeyEvent& event, wxWindow *win)
837 {
838 // wxEVT_CHAR_HOOK must be sent to allow the parent windows (e.g. a dialog
839 // which typically closes when Esc key is pressed in any of its controls)
840 // to handle key events in all of its children unless the mouse is captured
841 // in which case we consider that the keyboard should be "captured" too.
842 if ( !g_captureWindow )
843 {
844 wxKeyEvent eventCharHook(wxEVT_CHAR_HOOK, event);
845 if ( win->HandleWindowEvent(eventCharHook)
846 && !event.IsNextEventAllowed() )
847 return true;
848 }
849
850 return false;
851 }
852
853 // Adjust wxEVT_CHAR event key code fields. This function takes care of two
854 // conventions:
855 // (a) Ctrl-letter key presses generate key codes in range 1..26
856 // (b) Unicode key codes are same as key codes for the codes in 1..255 range
857 void AdjustCharEventKeyCodes(wxKeyEvent& event)
858 {
859 const int code = event.m_keyCode;
860
861 // Check for (a) above.
862 if ( event.ControlDown() )
863 {
864 // We intentionally don't use isupper/lower() here, we really need
865 // ASCII letters only as it doesn't make sense to translate any other
866 // ones into this range which has only 26 slots.
867 if ( code >= 'a' && code <= 'z' )
868 event.m_keyCode = code - 'a' + 1;
869 else if ( code >= 'A' && code <= 'Z' )
870 event.m_keyCode = code - 'A' + 1;
871
872 #if wxUSE_UNICODE
873 // Adjust the Unicode equivalent in the same way too.
874 if ( event.m_keyCode != code )
875 event.m_uniChar = event.m_keyCode;
876 #endif // wxUSE_UNICODE
877 }
878
879 #if wxUSE_UNICODE
880 // Check for (b) from above.
881 //
882 // FIXME: Should we do it for key codes up to 255?
883 if ( !event.m_uniChar && code < WXK_DELETE )
884 event.m_uniChar = code;
885 #endif // wxUSE_UNICODE
886 }
887
888 } // anonymous namespace
889
890 // If a widget does not handle a key or mouse event, GTK+ sends it up the
891 // parent chain until it is handled. These events are not supposed to propagate
892 // in wxWidgets, so this code avoids handling them in any parent wxWindow,
893 // while still allowing the event to propagate so things like native keyboard
894 // navigation will work.
895 #define wxPROCESS_EVENT_ONCE(EventType, event) \
896 static EventType eventPrev; \
897 if (memcmp(&eventPrev, event, sizeof(EventType)) == 0) \
898 return false; \
899 eventPrev = *event
900
901 extern "C" {
902 static gboolean
903 gtk_window_key_press_callback( GtkWidget *WXUNUSED(widget),
904 GdkEventKey *gdk_event,
905 wxWindow *win )
906 {
907 if (!win->m_hasVMT)
908 return FALSE;
909 if (g_blockEventsOnDrag)
910 return FALSE;
911
912 wxPROCESS_EVENT_ONCE(GdkEventKey, gdk_event);
913
914 wxKeyEvent event( wxEVT_KEY_DOWN );
915 bool ret = false;
916 bool return_after_IM = false;
917
918 if( wxTranslateGTKKeyEventToWx(event, win, gdk_event) )
919 {
920 // Send the CHAR_HOOK event first
921 if ( SendCharHookEvent(event, win) )
922 {
923 // Don't do anything at all with this event any more.
924 return TRUE;
925 }
926
927 // Emit KEY_DOWN event
928 ret = win->HandleWindowEvent( event );
929 }
930 else
931 {
932 // Return after IM processing as we cannot do
933 // anything with it anyhow.
934 return_after_IM = true;
935 }
936
937 if (!ret && win->m_imData)
938 {
939 win->m_imData->lastKeyEvent = gdk_event;
940
941 // We should let GTK+ IM filter key event first. According to GTK+ 2.0 API
942 // docs, if IM filter returns true, no further processing should be done.
943 // we should send the key_down event anyway.
944 bool intercepted_by_IM = gtk_im_context_filter_keypress(win->m_imData->context, gdk_event);
945 win->m_imData->lastKeyEvent = NULL;
946 if (intercepted_by_IM)
947 {
948 wxLogTrace(TRACE_KEYS, wxT("Key event intercepted by IM"));
949 return TRUE;
950 }
951 }
952
953 if (return_after_IM)
954 return FALSE;
955
956 #if wxUSE_ACCEL
957 if (!ret)
958 {
959 wxWindowGTK *ancestor = win;
960 while (ancestor)
961 {
962 int command = ancestor->GetAcceleratorTable()->GetCommand( event );
963 if (command != -1)
964 {
965 wxCommandEvent menu_event( wxEVT_COMMAND_MENU_SELECTED, command );
966 ret = ancestor->HandleWindowEvent( menu_event );
967
968 if ( !ret )
969 {
970 // if the accelerator wasn't handled as menu event, try
971 // it as button click (for compatibility with other
972 // platforms):
973 wxCommandEvent button_event( wxEVT_COMMAND_BUTTON_CLICKED, command );
974 ret = ancestor->HandleWindowEvent( button_event );
975 }
976
977 break;
978 }
979 if (ancestor->IsTopLevel())
980 break;
981 ancestor = ancestor->GetParent();
982 }
983 }
984 #endif // wxUSE_ACCEL
985
986 // Only send wxEVT_CHAR event if not processed yet. Thus, ALT-x
987 // will only be sent if it is not in an accelerator table.
988 if (!ret)
989 {
990 long key_code;
991 KeySym keysym = gdk_event->keyval;
992 // Find key code for EVT_CHAR and EVT_CHAR_HOOK events
993 key_code = wxTranslateKeySymToWXKey(keysym, true /* isChar */);
994 if ( !key_code )
995 {
996 if ( wxIsAsciiKeysym(keysym) )
997 {
998 // ASCII key
999 key_code = (unsigned char)keysym;
1000 }
1001 // gdk_event->string is actually deprecated
1002 else if ( gdk_event->length == 1 )
1003 {
1004 key_code = (unsigned char)gdk_event->string[0];
1005 }
1006 }
1007
1008 if ( key_code )
1009 {
1010 wxKeyEvent eventChar(wxEVT_CHAR, event);
1011
1012 wxLogTrace(TRACE_KEYS, wxT("Char event: %ld"), key_code);
1013
1014 eventChar.m_keyCode = key_code;
1015
1016 AdjustCharEventKeyCodes(eventChar);
1017
1018 ret = win->HandleWindowEvent(eventChar);
1019 }
1020 }
1021
1022 return ret;
1023 }
1024 }
1025
1026 extern "C" {
1027 static void
1028 gtk_wxwindow_commit_cb (GtkIMContext * WXUNUSED(context),
1029 const gchar *str,
1030 wxWindow *window)
1031 {
1032 wxKeyEvent event( wxEVT_CHAR );
1033
1034 // take modifiers, cursor position, timestamp etc. from the last
1035 // key_press_event that was fed into Input Method:
1036 if (window->m_imData->lastKeyEvent)
1037 {
1038 wxFillOtherKeyEventFields(event,
1039 window, window->m_imData->lastKeyEvent);
1040 }
1041 else
1042 {
1043 event.SetEventObject( window );
1044 }
1045
1046 const wxString data(wxGTK_CONV_BACK_SYS(str));
1047 if( data.empty() )
1048 return;
1049
1050 for( wxString::const_iterator pstr = data.begin(); pstr != data.end(); ++pstr )
1051 {
1052 #if wxUSE_UNICODE
1053 event.m_uniChar = *pstr;
1054 // Backward compatible for ISO-8859-1
1055 event.m_keyCode = *pstr < 256 ? event.m_uniChar : 0;
1056 wxLogTrace(TRACE_KEYS, wxT("IM sent character '%c'"), event.m_uniChar);
1057 #else
1058 event.m_keyCode = (char)*pstr;
1059 #endif // wxUSE_UNICODE
1060
1061 AdjustCharEventKeyCodes(event);
1062
1063 window->HandleWindowEvent(event);
1064 }
1065 }
1066 }
1067
1068
1069 //-----------------------------------------------------------------------------
1070 // "key_release_event" from any window
1071 //-----------------------------------------------------------------------------
1072
1073 extern "C" {
1074 static gboolean
1075 gtk_window_key_release_callback( GtkWidget * WXUNUSED(widget),
1076 GdkEventKey *gdk_event,
1077 wxWindowGTK *win )
1078 {
1079 if (!win->m_hasVMT)
1080 return FALSE;
1081
1082 if (g_blockEventsOnDrag)
1083 return FALSE;
1084
1085 wxPROCESS_EVENT_ONCE(GdkEventKey, gdk_event);
1086
1087 wxKeyEvent event( wxEVT_KEY_UP );
1088 if ( !wxTranslateGTKKeyEventToWx(event, win, gdk_event) )
1089 {
1090 // unknown key pressed, ignore (the event would be useless anyhow)
1091 return FALSE;
1092 }
1093
1094 return win->GTKProcessEvent(event);
1095 }
1096 }
1097
1098 // ============================================================================
1099 // the mouse events
1100 // ============================================================================
1101
1102 // ----------------------------------------------------------------------------
1103 // mouse event processing helpers
1104 // ----------------------------------------------------------------------------
1105
1106 static void AdjustEventButtonState(wxMouseEvent& event)
1107 {
1108 // GDK reports the old state of the button for a button press event, but
1109 // for compatibility with MSW and common sense we want m_leftDown be TRUE
1110 // for a LEFT_DOWN event, not FALSE, so we will invert
1111 // left/right/middleDown for the corresponding click events
1112
1113 if ((event.GetEventType() == wxEVT_LEFT_DOWN) ||
1114 (event.GetEventType() == wxEVT_LEFT_DCLICK) ||
1115 (event.GetEventType() == wxEVT_LEFT_UP))
1116 {
1117 event.m_leftDown = !event.m_leftDown;
1118 return;
1119 }
1120
1121 if ((event.GetEventType() == wxEVT_MIDDLE_DOWN) ||
1122 (event.GetEventType() == wxEVT_MIDDLE_DCLICK) ||
1123 (event.GetEventType() == wxEVT_MIDDLE_UP))
1124 {
1125 event.m_middleDown = !event.m_middleDown;
1126 return;
1127 }
1128
1129 if ((event.GetEventType() == wxEVT_RIGHT_DOWN) ||
1130 (event.GetEventType() == wxEVT_RIGHT_DCLICK) ||
1131 (event.GetEventType() == wxEVT_RIGHT_UP))
1132 {
1133 event.m_rightDown = !event.m_rightDown;
1134 return;
1135 }
1136
1137 if ((event.GetEventType() == wxEVT_AUX1_DOWN) ||
1138 (event.GetEventType() == wxEVT_AUX1_DCLICK))
1139 {
1140 event.m_aux1Down = true;
1141 return;
1142 }
1143
1144 if ((event.GetEventType() == wxEVT_AUX2_DOWN) ||
1145 (event.GetEventType() == wxEVT_AUX2_DCLICK))
1146 {
1147 event.m_aux2Down = true;
1148 return;
1149 }
1150 }
1151
1152 // find the window to send the mouse event to
1153 static
1154 wxWindowGTK *FindWindowForMouseEvent(wxWindowGTK *win, wxCoord& x, wxCoord& y)
1155 {
1156 wxCoord xx = x;
1157 wxCoord yy = y;
1158
1159 if (win->m_wxwindow)
1160 {
1161 wxPizza* pizza = WX_PIZZA(win->m_wxwindow);
1162 xx += pizza->m_scroll_x;
1163 yy += pizza->m_scroll_y;
1164 }
1165
1166 wxWindowList::compatibility_iterator node = win->GetChildren().GetFirst();
1167 while (node)
1168 {
1169 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 wxPROCESS_EVENT_ONCE(GdkEventButton, gdk_event);
1283
1284 wxCOMMON_CALLBACK_PROLOGUE(gdk_event, win);
1285
1286 g_lastButtonNumber = gdk_event->button;
1287
1288 // GDK sends surplus button down events
1289 // before a double click event. We
1290 // need to filter these out.
1291 if ((gdk_event->type == GDK_BUTTON_PRESS) && (win->m_wxwindow))
1292 {
1293 GdkEvent *peek_event = gdk_event_peek();
1294 if (peek_event)
1295 {
1296 if ((peek_event->type == GDK_2BUTTON_PRESS) ||
1297 (peek_event->type == GDK_3BUTTON_PRESS))
1298 {
1299 gdk_event_free( peek_event );
1300 return TRUE;
1301 }
1302 else
1303 {
1304 gdk_event_free( peek_event );
1305 }
1306 }
1307 }
1308
1309 wxEventType event_type = wxEVT_NULL;
1310
1311 if ( gdk_event->type == GDK_2BUTTON_PRESS &&
1312 gdk_event->button >= 1 && gdk_event->button <= 3 )
1313 {
1314 // Reset GDK internal timestamp variables in order to disable GDK
1315 // triple click events. GDK will then next time believe no button has
1316 // been clicked just before, and send a normal button click event.
1317 GdkDisplay* display = gtk_widget_get_display (widget);
1318 display->button_click_time[1] = 0;
1319 display->button_click_time[0] = 0;
1320 }
1321
1322 if (gdk_event->button == 1)
1323 {
1324 // note that GDK generates triple click events which are not supported
1325 // by wxWidgets but still have to be passed to the app as otherwise
1326 // clicks would simply go missing
1327 switch (gdk_event->type)
1328 {
1329 // we shouldn't get triple clicks at all for GTK2 because we
1330 // suppress them artificially using the code above but we still
1331 // should map them to something for GTK1 and not just ignore them
1332 // as this would lose clicks
1333 case GDK_3BUTTON_PRESS: // we could also map this to DCLICK...
1334 case GDK_BUTTON_PRESS:
1335 event_type = wxEVT_LEFT_DOWN;
1336 break;
1337
1338 case GDK_2BUTTON_PRESS:
1339 event_type = wxEVT_LEFT_DCLICK;
1340 break;
1341
1342 default:
1343 // just to silence gcc warnings
1344 ;
1345 }
1346 }
1347 else if (gdk_event->button == 2)
1348 {
1349 switch (gdk_event->type)
1350 {
1351 case GDK_3BUTTON_PRESS:
1352 case GDK_BUTTON_PRESS:
1353 event_type = wxEVT_MIDDLE_DOWN;
1354 break;
1355
1356 case GDK_2BUTTON_PRESS:
1357 event_type = wxEVT_MIDDLE_DCLICK;
1358 break;
1359
1360 default:
1361 ;
1362 }
1363 }
1364 else if (gdk_event->button == 3)
1365 {
1366 switch (gdk_event->type)
1367 {
1368 case GDK_3BUTTON_PRESS:
1369 case GDK_BUTTON_PRESS:
1370 event_type = wxEVT_RIGHT_DOWN;
1371 break;
1372
1373 case GDK_2BUTTON_PRESS:
1374 event_type = wxEVT_RIGHT_DCLICK;
1375 break;
1376
1377 default:
1378 ;
1379 }
1380 }
1381
1382 else if (gdk_event->button == 8)
1383 {
1384 switch (gdk_event->type)
1385 {
1386 case GDK_3BUTTON_PRESS:
1387 case GDK_BUTTON_PRESS:
1388 event_type = wxEVT_AUX1_DOWN;
1389 break;
1390
1391 case GDK_2BUTTON_PRESS:
1392 event_type = wxEVT_AUX1_DCLICK;
1393 break;
1394
1395 default:
1396 ;
1397 }
1398 }
1399
1400 else if (gdk_event->button == 9)
1401 {
1402 switch (gdk_event->type)
1403 {
1404 case GDK_3BUTTON_PRESS:
1405 case GDK_BUTTON_PRESS:
1406 event_type = wxEVT_AUX2_DOWN;
1407 break;
1408
1409 case GDK_2BUTTON_PRESS:
1410 event_type = wxEVT_AUX2_DCLICK;
1411 break;
1412
1413 default:
1414 ;
1415 }
1416 }
1417
1418 if ( event_type == wxEVT_NULL )
1419 {
1420 // unknown mouse button or click type
1421 return FALSE;
1422 }
1423
1424 g_lastMouseEvent = (GdkEvent*) gdk_event;
1425
1426 wxMouseEvent event( event_type );
1427 InitMouseEvent( win, event, gdk_event );
1428
1429 AdjustEventButtonState(event);
1430
1431 // find the correct window to send the event to: it may be a different one
1432 // from the one which got it at GTK+ level because some controls don't have
1433 // their own X window and thus cannot get any events.
1434 if ( !g_captureWindow )
1435 win = FindWindowForMouseEvent(win, event.m_x, event.m_y);
1436
1437 // reset the event object and id in case win changed.
1438 event.SetEventObject( win );
1439 event.SetId( win->GetId() );
1440
1441 bool ret = win->GTKProcessEvent( event );
1442 g_lastMouseEvent = NULL;
1443 if ( ret )
1444 return TRUE;
1445
1446 if ((event_type == wxEVT_LEFT_DOWN) && !win->IsOfStandardClass() &&
1447 (gs_currentFocus != win) /* && win->IsFocusable() */)
1448 {
1449 win->SetFocus();
1450 }
1451
1452 if (event_type == wxEVT_RIGHT_DOWN)
1453 {
1454 // generate a "context menu" event: this is similar to right mouse
1455 // click under many GUIs except that it is generated differently
1456 // (right up under MSW, ctrl-click under Mac, right down here) and
1457 //
1458 // (a) it's a command event and so is propagated to the parent
1459 // (b) under some ports it can be generated from kbd too
1460 // (c) it uses screen coords (because of (a))
1461 wxContextMenuEvent evtCtx(
1462 wxEVT_CONTEXT_MENU,
1463 win->GetId(),
1464 win->ClientToScreen(event.GetPosition()));
1465 evtCtx.SetEventObject(win);
1466 return win->GTKProcessEvent(evtCtx);
1467 }
1468
1469 return FALSE;
1470 }
1471
1472 //-----------------------------------------------------------------------------
1473 // "button_release_event"
1474 //-----------------------------------------------------------------------------
1475
1476 static gboolean
1477 gtk_window_button_release_callback( GtkWidget *WXUNUSED(widget),
1478 GdkEventButton *gdk_event,
1479 wxWindowGTK *win )
1480 {
1481 wxPROCESS_EVENT_ONCE(GdkEventButton, gdk_event);
1482
1483 wxCOMMON_CALLBACK_PROLOGUE(gdk_event, win);
1484
1485 g_lastButtonNumber = 0;
1486
1487 wxEventType event_type = wxEVT_NULL;
1488
1489 switch (gdk_event->button)
1490 {
1491 case 1:
1492 event_type = wxEVT_LEFT_UP;
1493 break;
1494
1495 case 2:
1496 event_type = wxEVT_MIDDLE_UP;
1497 break;
1498
1499 case 3:
1500 event_type = wxEVT_RIGHT_UP;
1501 break;
1502
1503 case 8:
1504 event_type = wxEVT_AUX1_UP;
1505 break;
1506
1507 case 9:
1508 event_type = wxEVT_AUX2_UP;
1509 break;
1510
1511 default:
1512 // unknown button, don't process
1513 return FALSE;
1514 }
1515
1516 g_lastMouseEvent = (GdkEvent*) gdk_event;
1517
1518 wxMouseEvent event( event_type );
1519 InitMouseEvent( win, event, gdk_event );
1520
1521 AdjustEventButtonState(event);
1522
1523 if ( !g_captureWindow )
1524 win = FindWindowForMouseEvent(win, event.m_x, event.m_y);
1525
1526 // reset the event object and id in case win changed.
1527 event.SetEventObject( win );
1528 event.SetId( win->GetId() );
1529
1530 bool ret = win->GTKProcessEvent(event);
1531
1532 g_lastMouseEvent = NULL;
1533
1534 return ret;
1535 }
1536
1537 //-----------------------------------------------------------------------------
1538 // "motion_notify_event"
1539 //-----------------------------------------------------------------------------
1540
1541 static gboolean
1542 gtk_window_motion_notify_callback( GtkWidget * WXUNUSED(widget),
1543 GdkEventMotion *gdk_event,
1544 wxWindowGTK *win )
1545 {
1546 wxPROCESS_EVENT_ONCE(GdkEventMotion, gdk_event);
1547
1548 wxCOMMON_CALLBACK_PROLOGUE(gdk_event, win);
1549
1550 if (gdk_event->is_hint)
1551 {
1552 int x = 0;
1553 int y = 0;
1554 GdkModifierType state;
1555 gdk_window_get_pointer(gdk_event->window, &x, &y, &state);
1556 gdk_event->x = x;
1557 gdk_event->y = y;
1558 }
1559
1560 g_lastMouseEvent = (GdkEvent*) gdk_event;
1561
1562 wxMouseEvent event( wxEVT_MOTION );
1563 InitMouseEvent(win, event, gdk_event);
1564
1565 if ( g_captureWindow )
1566 {
1567 // synthesise a mouse enter or leave event if needed
1568 GdkWindow *winUnderMouse = gdk_window_at_pointer(NULL, NULL);
1569 // This seems to be necessary and actually been added to
1570 // GDK itself in version 2.0.X
1571 gdk_flush();
1572
1573 bool hasMouse = winUnderMouse == gdk_event->window;
1574 if ( hasMouse != g_captureWindowHasMouse )
1575 {
1576 // the mouse changed window
1577 g_captureWindowHasMouse = hasMouse;
1578
1579 wxMouseEvent eventM(g_captureWindowHasMouse ? wxEVT_ENTER_WINDOW
1580 : wxEVT_LEAVE_WINDOW);
1581 InitMouseEvent(win, eventM, gdk_event);
1582 eventM.SetEventObject(win);
1583 win->GTKProcessEvent(eventM);
1584 }
1585 }
1586 else // no capture
1587 {
1588 win = FindWindowForMouseEvent(win, event.m_x, event.m_y);
1589
1590 // reset the event object and id in case win changed.
1591 event.SetEventObject( win );
1592 event.SetId( win->GetId() );
1593 }
1594
1595 if ( !g_captureWindow )
1596 {
1597 wxSetCursorEvent cevent( event.m_x, event.m_y );
1598 if (win->GTKProcessEvent( cevent ))
1599 {
1600 win->SetCursor( cevent.GetCursor() );
1601 }
1602 }
1603
1604 bool ret = win->GTKProcessEvent(event);
1605
1606 g_lastMouseEvent = NULL;
1607
1608 return ret;
1609 }
1610
1611 //-----------------------------------------------------------------------------
1612 // "scroll_event" (mouse wheel event)
1613 //-----------------------------------------------------------------------------
1614
1615 static gboolean
1616 window_scroll_event_hscrollbar(GtkWidget*, GdkEventScroll* gdk_event, wxWindow* win)
1617 {
1618 if (gdk_event->direction != GDK_SCROLL_LEFT &&
1619 gdk_event->direction != GDK_SCROLL_RIGHT)
1620 {
1621 return false;
1622 }
1623
1624 GtkRange *range = win->m_scrollBar[wxWindow::ScrollDir_Horz];
1625
1626 if (range && gtk_widget_get_visible(GTK_WIDGET(range)))
1627 {
1628 GtkAdjustment* adj = gtk_range_get_adjustment(range);
1629 double delta = gtk_adjustment_get_step_increment(adj) * 3;
1630 if (gdk_event->direction == GDK_SCROLL_LEFT)
1631 delta = -delta;
1632
1633 gtk_range_set_value(range, gtk_adjustment_get_value(adj) + delta);
1634
1635 return TRUE;
1636 }
1637
1638 return FALSE;
1639 }
1640
1641 static gboolean
1642 window_scroll_event(GtkWidget*, GdkEventScroll* gdk_event, wxWindow* win)
1643 {
1644 wxMouseEvent event(wxEVT_MOUSEWHEEL);
1645 InitMouseEvent(win, event, gdk_event);
1646
1647 // FIXME: Get these values from GTK or GDK
1648 event.m_linesPerAction = 3;
1649 event.m_wheelDelta = 120;
1650
1651 // Determine the scroll direction.
1652 switch (gdk_event->direction)
1653 {
1654 case GDK_SCROLL_UP:
1655 case GDK_SCROLL_RIGHT:
1656 event.m_wheelRotation = 120;
1657 break;
1658
1659 case GDK_SCROLL_DOWN:
1660 case GDK_SCROLL_LEFT:
1661 event.m_wheelRotation = -120;
1662 break;
1663
1664 default:
1665 return false; // Unknown/unhandled direction
1666 }
1667
1668 // And the scroll axis.
1669 switch (gdk_event->direction)
1670 {
1671 case GDK_SCROLL_UP:
1672 case GDK_SCROLL_DOWN:
1673 event.m_wheelAxis = wxMOUSE_WHEEL_VERTICAL;
1674 break;
1675
1676 case GDK_SCROLL_LEFT:
1677 case GDK_SCROLL_RIGHT:
1678 event.m_wheelAxis = wxMOUSE_WHEEL_HORIZONTAL;
1679 break;
1680 }
1681
1682 if (win->GTKProcessEvent(event))
1683 return TRUE;
1684
1685 GtkRange *range = win->m_scrollBar[wxWindow::ScrollDir_Vert];
1686
1687 if (range && gtk_widget_get_visible(GTK_WIDGET(range)))
1688 {
1689 GtkAdjustment* adj = gtk_range_get_adjustment(range);
1690 double delta = gtk_adjustment_get_step_increment(adj) * 3;
1691 if (gdk_event->direction == GDK_SCROLL_UP)
1692 delta = -delta;
1693
1694 gtk_range_set_value(range, gtk_adjustment_get_value(adj) + delta);
1695
1696 return TRUE;
1697 }
1698
1699 return FALSE;
1700 }
1701
1702 //-----------------------------------------------------------------------------
1703 // "popup-menu"
1704 //-----------------------------------------------------------------------------
1705
1706 static gboolean wxgtk_window_popup_menu_callback(GtkWidget*, wxWindowGTK* win)
1707 {
1708 wxContextMenuEvent event(wxEVT_CONTEXT_MENU, win->GetId(), wxPoint(-1, -1));
1709 event.SetEventObject(win);
1710 return win->GTKProcessEvent(event);
1711 }
1712
1713 //-----------------------------------------------------------------------------
1714 // "focus_in_event"
1715 //-----------------------------------------------------------------------------
1716
1717 static gboolean
1718 gtk_window_focus_in_callback( GtkWidget * WXUNUSED(widget),
1719 GdkEventFocus *WXUNUSED(event),
1720 wxWindowGTK *win )
1721 {
1722 return win->GTKHandleFocusIn();
1723 }
1724
1725 //-----------------------------------------------------------------------------
1726 // "focus_out_event"
1727 //-----------------------------------------------------------------------------
1728
1729 static gboolean
1730 gtk_window_focus_out_callback( GtkWidget * WXUNUSED(widget),
1731 GdkEventFocus * WXUNUSED(gdk_event),
1732 wxWindowGTK *win )
1733 {
1734 return win->GTKHandleFocusOut();
1735 }
1736
1737 //-----------------------------------------------------------------------------
1738 // "focus"
1739 //-----------------------------------------------------------------------------
1740
1741 static gboolean
1742 wx_window_focus_callback(GtkWidget *widget,
1743 GtkDirectionType WXUNUSED(direction),
1744 wxWindowGTK *win)
1745 {
1746 // the default handler for focus signal in GtkScrolledWindow sets
1747 // focus to the window itself even if it doesn't accept focus, i.e. has no
1748 // GTK_CAN_FOCUS in its style -- work around this by forcibly preventing
1749 // the signal from reaching gtk_scrolled_window_focus() if we don't have
1750 // any children which might accept focus (we know we don't accept the focus
1751 // ourselves as this signal is only connected in this case)
1752 if ( win->GetChildren().empty() )
1753 g_signal_stop_emission_by_name(widget, "focus");
1754
1755 // we didn't change the focus
1756 return FALSE;
1757 }
1758
1759 //-----------------------------------------------------------------------------
1760 // "enter_notify_event"
1761 //-----------------------------------------------------------------------------
1762
1763 static gboolean
1764 gtk_window_enter_callback( GtkWidget *widget,
1765 GdkEventCrossing *gdk_event,
1766 wxWindowGTK *win )
1767 {
1768 wxCOMMON_CALLBACK_PROLOGUE(gdk_event, win);
1769
1770 // Event was emitted after a grab
1771 if (gdk_event->mode != GDK_CROSSING_NORMAL) return FALSE;
1772
1773 int x = 0;
1774 int y = 0;
1775 GdkModifierType state = (GdkModifierType)0;
1776
1777 gdk_window_get_pointer(gtk_widget_get_window(widget), &x, &y, &state);
1778
1779 wxMouseEvent event( wxEVT_ENTER_WINDOW );
1780 InitMouseEvent(win, event, gdk_event);
1781 wxPoint pt = win->GetClientAreaOrigin();
1782 event.m_x = x + pt.x;
1783 event.m_y = y + pt.y;
1784
1785 if ( !g_captureWindow )
1786 {
1787 wxSetCursorEvent cevent( event.m_x, event.m_y );
1788 if (win->GTKProcessEvent( cevent ))
1789 {
1790 win->SetCursor( cevent.GetCursor() );
1791 }
1792 }
1793
1794 return win->GTKProcessEvent(event);
1795 }
1796
1797 //-----------------------------------------------------------------------------
1798 // "leave_notify_event"
1799 //-----------------------------------------------------------------------------
1800
1801 static gboolean
1802 gtk_window_leave_callback( GtkWidget *widget,
1803 GdkEventCrossing *gdk_event,
1804 wxWindowGTK *win )
1805 {
1806 wxCOMMON_CALLBACK_PROLOGUE(gdk_event, win);
1807
1808 // Event was emitted after an ungrab
1809 if (gdk_event->mode != GDK_CROSSING_NORMAL) return FALSE;
1810
1811 wxMouseEvent event( wxEVT_LEAVE_WINDOW );
1812
1813 int x = 0;
1814 int y = 0;
1815 GdkModifierType state = (GdkModifierType)0;
1816
1817 gdk_window_get_pointer(gtk_widget_get_window(widget), &x, &y, &state);
1818
1819 InitMouseEvent(win, event, gdk_event);
1820
1821 return win->GTKProcessEvent(event);
1822 }
1823
1824 //-----------------------------------------------------------------------------
1825 // "value_changed" from scrollbar
1826 //-----------------------------------------------------------------------------
1827
1828 static void
1829 gtk_scrollbar_value_changed(GtkRange* range, wxWindow* win)
1830 {
1831 wxEventType eventType = win->GTKGetScrollEventType(range);
1832 if (eventType != wxEVT_NULL)
1833 {
1834 // Convert scroll event type to scrollwin event type
1835 eventType += wxEVT_SCROLLWIN_TOP - wxEVT_SCROLL_TOP;
1836
1837 // find the scrollbar which generated the event
1838 wxWindowGTK::ScrollDir dir = win->ScrollDirFromRange(range);
1839
1840 // generate the corresponding wx event
1841 const int orient = wxWindow::OrientFromScrollDir(dir);
1842 wxScrollWinEvent event(eventType, win->GetScrollPos(orient), orient);
1843 event.SetEventObject(win);
1844
1845 win->GTKProcessEvent(event);
1846 }
1847 }
1848
1849 //-----------------------------------------------------------------------------
1850 // "button_press_event" from scrollbar
1851 //-----------------------------------------------------------------------------
1852
1853 static gboolean
1854 gtk_scrollbar_button_press_event(GtkRange*, GdkEventButton*, wxWindow* win)
1855 {
1856 g_blockEventsOnScroll = true;
1857 win->m_mouseButtonDown = true;
1858
1859 return false;
1860 }
1861
1862 //-----------------------------------------------------------------------------
1863 // "event_after" from scrollbar
1864 //-----------------------------------------------------------------------------
1865
1866 static void
1867 gtk_scrollbar_event_after(GtkRange* range, GdkEvent* event, wxWindow* win)
1868 {
1869 if (event->type == GDK_BUTTON_RELEASE)
1870 {
1871 g_signal_handlers_block_by_func(range, (void*)gtk_scrollbar_event_after, win);
1872
1873 const int orient = wxWindow::OrientFromScrollDir(
1874 win->ScrollDirFromRange(range));
1875 wxScrollWinEvent evt(wxEVT_SCROLLWIN_THUMBRELEASE,
1876 win->GetScrollPos(orient), orient);
1877 evt.SetEventObject(win);
1878 win->GTKProcessEvent(evt);
1879 }
1880 }
1881
1882 //-----------------------------------------------------------------------------
1883 // "button_release_event" from scrollbar
1884 //-----------------------------------------------------------------------------
1885
1886 static gboolean
1887 gtk_scrollbar_button_release_event(GtkRange* range, GdkEventButton*, wxWindow* win)
1888 {
1889 g_blockEventsOnScroll = false;
1890 win->m_mouseButtonDown = false;
1891 // If thumb tracking
1892 if (win->m_isScrolling)
1893 {
1894 win->m_isScrolling = false;
1895 // Hook up handler to send thumb release event after this emission is finished.
1896 // To allow setting scroll position from event handler, sending event must
1897 // be deferred until after the GtkRange handler for this signal has run
1898 g_signal_handlers_unblock_by_func(range, (void*)gtk_scrollbar_event_after, win);
1899 }
1900
1901 return false;
1902 }
1903
1904 //-----------------------------------------------------------------------------
1905 // "realize" from m_widget
1906 //-----------------------------------------------------------------------------
1907
1908 static void
1909 gtk_window_realized_callback(GtkWidget* WXUNUSED(widget), wxWindowGTK* win)
1910 {
1911 win->GTKHandleRealized();
1912 }
1913
1914 //-----------------------------------------------------------------------------
1915 // "unrealize" from m_wxwindow
1916 //-----------------------------------------------------------------------------
1917
1918 static void unrealize(GtkWidget*, wxWindowGTK* win)
1919 {
1920 if (win->m_imData)
1921 gtk_im_context_set_client_window(win->m_imData->context, NULL);
1922 }
1923
1924 //-----------------------------------------------------------------------------
1925 // "size_allocate" from m_wxwindow or m_widget
1926 //-----------------------------------------------------------------------------
1927
1928 static void
1929 size_allocate(GtkWidget*, GtkAllocation* alloc, wxWindow* win)
1930 {
1931 int w = alloc->width;
1932 int h = alloc->height;
1933 if (win->m_wxwindow)
1934 {
1935 int border_x, border_y;
1936 WX_PIZZA(win->m_wxwindow)->get_border_widths(border_x, border_y);
1937 w -= 2 * border_x;
1938 h -= 2 * border_y;
1939 if (w < 0) w = 0;
1940 if (h < 0) h = 0;
1941 }
1942 if (win->m_oldClientWidth != w || win->m_oldClientHeight != h)
1943 {
1944 win->m_oldClientWidth = w;
1945 win->m_oldClientHeight = h;
1946 // this callback can be connected to m_wxwindow,
1947 // so always get size from m_widget->allocation
1948 GtkAllocation a;
1949 gtk_widget_get_allocation(win->m_widget, &a);
1950 win->m_width = a.width;
1951 win->m_height = a.height;
1952 if (!win->m_nativeSizeEvent)
1953 {
1954 wxSizeEvent event(win->GetSize(), win->GetId());
1955 event.SetEventObject(win);
1956 win->GTKProcessEvent(event);
1957 }
1958 }
1959 }
1960
1961 //-----------------------------------------------------------------------------
1962 // "grab_broken"
1963 //-----------------------------------------------------------------------------
1964
1965 #if GTK_CHECK_VERSION(2, 8, 0)
1966 static gboolean
1967 gtk_window_grab_broken( GtkWidget*,
1968 GdkEventGrabBroken *event,
1969 wxWindow *win )
1970 {
1971 // Mouse capture has been lost involuntarily, notify the application
1972 if(!event->keyboard && wxWindow::GetCapture() == win)
1973 {
1974 wxMouseCaptureLostEvent evt( win->GetId() );
1975 evt.SetEventObject( win );
1976 win->HandleWindowEvent( evt );
1977 }
1978 return false;
1979 }
1980 #endif
1981
1982 //-----------------------------------------------------------------------------
1983 // "style_set"
1984 //-----------------------------------------------------------------------------
1985
1986 static
1987 void gtk_window_style_set_callback( GtkWidget *WXUNUSED(widget),
1988 GtkStyle *previous_style,
1989 wxWindow* win )
1990 {
1991 if (win && previous_style)
1992 {
1993 if (win->IsTopLevel())
1994 {
1995 wxSysColourChangedEvent event;
1996 event.SetEventObject(win);
1997 win->GTKProcessEvent(event);
1998 }
1999 else
2000 {
2001 // Border width could change, which will change client size.
2002 // Make sure size event occurs for this
2003 win->m_oldClientWidth = 0;
2004 }
2005 }
2006 }
2007
2008 } // extern "C"
2009
2010 void wxWindowGTK::GTKHandleRealized()
2011 {
2012 if (m_imData)
2013 {
2014 gtk_im_context_set_client_window
2015 (
2016 m_imData->context,
2017 m_wxwindow ? GTKGetDrawingWindow()
2018 : gtk_widget_get_window(m_widget)
2019 );
2020 }
2021
2022 // Use composited window if background is transparent, if supported.
2023 if (m_backgroundStyle == wxBG_STYLE_TRANSPARENT)
2024 {
2025 #if wxGTK_HAS_COMPOSITING_SUPPORT
2026 if (IsTransparentBackgroundSupported())
2027 {
2028 GdkWindow* const window = GTKGetDrawingWindow();
2029 if (window)
2030 gdk_window_set_composited(window, true);
2031 }
2032 else
2033 #endif // wxGTK_HAS_COMPOSITING_SUPPORT
2034 {
2035 // We revert to erase mode if transparency is not supported
2036 m_backgroundStyle = wxBG_STYLE_ERASE;
2037 }
2038 }
2039
2040
2041 // We cannot set colours and fonts before the widget
2042 // been realized, so we do this directly after realization
2043 // or otherwise in idle time
2044
2045 if (m_needsStyleChange)
2046 {
2047 SetBackgroundStyle(GetBackgroundStyle());
2048 m_needsStyleChange = false;
2049 }
2050
2051 wxWindowCreateEvent event(static_cast<wxWindow*>(this));
2052 event.SetEventObject( this );
2053 GTKProcessEvent( event );
2054
2055 GTKUpdateCursor(true, false);
2056 }
2057
2058 // ----------------------------------------------------------------------------
2059 // this wxWindowBase function is implemented here (in platform-specific file)
2060 // because it is static and so couldn't be made virtual
2061 // ----------------------------------------------------------------------------
2062
2063 wxWindow *wxWindowBase::DoFindFocus()
2064 {
2065 wxWindowGTK *focus = gs_pendingFocus ? gs_pendingFocus : gs_currentFocus;
2066 // the cast is necessary when we compile in wxUniversal mode
2067 return static_cast<wxWindow*>(focus);
2068 }
2069
2070 void wxWindowGTK::AddChildGTK(wxWindowGTK* child)
2071 {
2072 wxASSERT_MSG(m_wxwindow, "Cannot add a child to a window without a client area");
2073
2074 // the window might have been scrolled already, we
2075 // have to adapt the position
2076 wxPizza* pizza = WX_PIZZA(m_wxwindow);
2077 child->m_x += pizza->m_scroll_x;
2078 child->m_y += pizza->m_scroll_y;
2079
2080 gtk_widget_set_size_request(
2081 child->m_widget, child->m_width, child->m_height);
2082 pizza->put(child->m_widget, child->m_x, child->m_y);
2083 }
2084
2085 //-----------------------------------------------------------------------------
2086 // global functions
2087 //-----------------------------------------------------------------------------
2088
2089 wxWindow *wxGetActiveWindow()
2090 {
2091 return wxWindow::FindFocus();
2092 }
2093
2094
2095 wxMouseState wxGetMouseState()
2096 {
2097 wxMouseState ms;
2098
2099 gint x;
2100 gint y;
2101 GdkModifierType mask;
2102
2103 gdk_window_get_pointer(NULL, &x, &y, &mask);
2104
2105 ms.SetX(x);
2106 ms.SetY(y);
2107 ms.SetLeftDown((mask & GDK_BUTTON1_MASK) != 0);
2108 ms.SetMiddleDown((mask & GDK_BUTTON2_MASK) != 0);
2109 ms.SetRightDown((mask & GDK_BUTTON3_MASK) != 0);
2110 // see the comment in InitMouseEvent()
2111 ms.SetAux1Down((mask & GDK_BUTTON4_MASK) != 0);
2112 ms.SetAux2Down((mask & GDK_BUTTON5_MASK) != 0);
2113
2114 ms.SetControlDown((mask & GDK_CONTROL_MASK) != 0);
2115 ms.SetShiftDown((mask & GDK_SHIFT_MASK) != 0);
2116 ms.SetAltDown((mask & GDK_MOD1_MASK) != 0);
2117 ms.SetMetaDown((mask & GDK_META_MASK) != 0);
2118
2119 return ms;
2120 }
2121
2122 //-----------------------------------------------------------------------------
2123 // wxWindowGTK
2124 //-----------------------------------------------------------------------------
2125
2126 // in wxUniv/MSW this class is abstract because it doesn't have DoPopupMenu()
2127 // method
2128 #ifdef __WXUNIVERSAL__
2129 IMPLEMENT_ABSTRACT_CLASS(wxWindowGTK, wxWindowBase)
2130 #endif // __WXUNIVERSAL__
2131
2132 void wxWindowGTK::Init()
2133 {
2134 // GTK specific
2135 m_widget = NULL;
2136 m_wxwindow = NULL;
2137 m_focusWidget = NULL;
2138
2139 // position/size
2140 m_x = 0;
2141 m_y = 0;
2142 m_width = 0;
2143 m_height = 0;
2144
2145 m_hasVMT = false;
2146
2147 m_showOnIdle = false;
2148
2149 m_noExpose = false;
2150 m_nativeSizeEvent = false;
2151
2152 m_isScrolling = false;
2153 m_mouseButtonDown = false;
2154
2155 // initialize scrolling stuff
2156 for ( int dir = 0; dir < ScrollDir_Max; dir++ )
2157 {
2158 m_scrollBar[dir] = NULL;
2159 m_scrollPos[dir] = 0;
2160 }
2161
2162 m_oldClientWidth =
2163 m_oldClientHeight = 0;
2164
2165 m_clipPaintRegion = false;
2166
2167 m_needsStyleChange = false;
2168
2169 m_cursor = *wxSTANDARD_CURSOR;
2170
2171 m_imData = NULL;
2172 m_dirtyTabOrder = false;
2173 }
2174
2175 wxWindowGTK::wxWindowGTK()
2176 {
2177 Init();
2178 }
2179
2180 wxWindowGTK::wxWindowGTK( wxWindow *parent,
2181 wxWindowID id,
2182 const wxPoint &pos,
2183 const wxSize &size,
2184 long style,
2185 const wxString &name )
2186 {
2187 Init();
2188
2189 Create( parent, id, pos, size, style, name );
2190 }
2191
2192 bool wxWindowGTK::Create( wxWindow *parent,
2193 wxWindowID id,
2194 const wxPoint &pos,
2195 const wxSize &size,
2196 long style,
2197 const wxString &name )
2198 {
2199 // Get default border
2200 wxBorder border = GetBorder(style);
2201
2202 style &= ~wxBORDER_MASK;
2203 style |= border;
2204
2205 if (!PreCreation( parent, pos, size ) ||
2206 !CreateBase( parent, id, pos, size, style, wxDefaultValidator, name ))
2207 {
2208 wxFAIL_MSG( wxT("wxWindowGTK creation failed") );
2209 return false;
2210 }
2211
2212 // We should accept the native look
2213 #if 0
2214 GtkScrolledWindowClass *scroll_class = GTK_SCROLLED_WINDOW_CLASS( GTK_OBJECT_GET_CLASS(m_widget) );
2215 scroll_class->scrollbar_spacing = 0;
2216 #endif
2217
2218
2219 m_wxwindow = wxPizza::New(m_windowStyle);
2220 #ifndef __WXUNIVERSAL__
2221 if (HasFlag(wxPizza::BORDER_STYLES))
2222 {
2223 g_signal_connect(m_wxwindow, "parent_set",
2224 G_CALLBACK(parent_set), this);
2225 }
2226 #endif
2227 if (!HasFlag(wxHSCROLL) && !HasFlag(wxVSCROLL))
2228 m_widget = m_wxwindow;
2229 else
2230 {
2231 m_widget = gtk_scrolled_window_new( NULL, NULL );
2232
2233 GtkScrolledWindow *scrolledWindow = GTK_SCROLLED_WINDOW(m_widget);
2234
2235 // There is a conflict with default bindings at GTK+
2236 // level between scrolled windows and notebooks both of which want to use
2237 // Ctrl-PageUp/Down: scrolled windows for scrolling in the horizontal
2238 // direction and notebooks for changing pages -- we decide that if we don't
2239 // have wxHSCROLL style we can safely sacrifice horizontal scrolling if it
2240 // means we can get working keyboard navigation in notebooks
2241 if ( !HasFlag(wxHSCROLL) )
2242 {
2243 GtkBindingSet *
2244 bindings = gtk_binding_set_by_class(G_OBJECT_GET_CLASS(m_widget));
2245 if ( bindings )
2246 {
2247 gtk_binding_entry_remove(bindings, GDK_Page_Up, GDK_CONTROL_MASK);
2248 gtk_binding_entry_remove(bindings, GDK_Page_Down, GDK_CONTROL_MASK);
2249 }
2250 }
2251
2252 if (HasFlag(wxALWAYS_SHOW_SB))
2253 {
2254 gtk_scrolled_window_set_policy( scrolledWindow, GTK_POLICY_ALWAYS, GTK_POLICY_ALWAYS );
2255 }
2256 else
2257 {
2258 gtk_scrolled_window_set_policy( scrolledWindow, GTK_POLICY_AUTOMATIC, GTK_POLICY_AUTOMATIC );
2259 }
2260
2261 m_scrollBar[ScrollDir_Horz] = GTK_RANGE(gtk_scrolled_window_get_hscrollbar(scrolledWindow));
2262 m_scrollBar[ScrollDir_Vert] = GTK_RANGE(gtk_scrolled_window_get_vscrollbar(scrolledWindow));
2263 if (GetLayoutDirection() == wxLayout_RightToLeft)
2264 gtk_range_set_inverted( m_scrollBar[ScrollDir_Horz], TRUE );
2265
2266 gtk_container_add( GTK_CONTAINER(m_widget), m_wxwindow );
2267
2268 // connect various scroll-related events
2269 for ( int dir = 0; dir < ScrollDir_Max; dir++ )
2270 {
2271 // these handlers block mouse events to any window during scrolling
2272 // such as motion events and prevent GTK and wxWidgets from fighting
2273 // over where the slider should be
2274 g_signal_connect(m_scrollBar[dir], "button_press_event",
2275 G_CALLBACK(gtk_scrollbar_button_press_event), this);
2276 g_signal_connect(m_scrollBar[dir], "button_release_event",
2277 G_CALLBACK(gtk_scrollbar_button_release_event), this);
2278
2279 gulong handler_id = g_signal_connect(m_scrollBar[dir], "event_after",
2280 G_CALLBACK(gtk_scrollbar_event_after), this);
2281 g_signal_handler_block(m_scrollBar[dir], handler_id);
2282
2283 // these handlers get notified when scrollbar slider moves
2284 g_signal_connect_after(m_scrollBar[dir], "value_changed",
2285 G_CALLBACK(gtk_scrollbar_value_changed), this);
2286 }
2287
2288 gtk_widget_show( m_wxwindow );
2289 }
2290 g_object_ref(m_widget);
2291
2292 if (m_parent)
2293 m_parent->DoAddChild( this );
2294
2295 m_focusWidget = m_wxwindow;
2296
2297 SetCanFocus(AcceptsFocus());
2298
2299 PostCreation();
2300
2301 return true;
2302 }
2303
2304 wxWindowGTK::~wxWindowGTK()
2305 {
2306 SendDestroyEvent();
2307
2308 if (gs_currentFocus == this)
2309 gs_currentFocus = NULL;
2310 if (gs_pendingFocus == this)
2311 gs_pendingFocus = NULL;
2312
2313 if ( gs_deferredFocusOut == this )
2314 gs_deferredFocusOut = NULL;
2315
2316 m_hasVMT = false;
2317
2318 // destroy children before destroying this window itself
2319 DestroyChildren();
2320
2321 // unhook focus handlers to prevent stray events being
2322 // propagated to this (soon to be) dead object
2323 if (m_focusWidget != NULL)
2324 {
2325 g_signal_handlers_disconnect_by_func (m_focusWidget,
2326 (gpointer) gtk_window_focus_in_callback,
2327 this);
2328 g_signal_handlers_disconnect_by_func (m_focusWidget,
2329 (gpointer) gtk_window_focus_out_callback,
2330 this);
2331 }
2332
2333 if (m_widget)
2334 Show( false );
2335
2336 // delete before the widgets to avoid a crash on solaris
2337 delete m_imData;
2338 m_imData = NULL;
2339
2340 // avoid problem with GTK+ 2.18 where a frozen window causes the whole
2341 // TLW to be frozen, and if the window is then destroyed, nothing ever
2342 // gets painted again
2343 if (IsFrozen())
2344 DoThaw();
2345
2346 if (m_widget)
2347 {
2348 // Note that gtk_widget_destroy() does not destroy the widget, it just
2349 // emits the "destroy" signal. The widget is not actually destroyed
2350 // until its reference count drops to zero.
2351 gtk_widget_destroy(m_widget);
2352 // Release our reference, should be the last one
2353 g_object_unref(m_widget);
2354 m_widget = NULL;
2355 }
2356 m_wxwindow = NULL;
2357 }
2358
2359 bool wxWindowGTK::PreCreation( wxWindowGTK *parent, const wxPoint &pos, const wxSize &size )
2360 {
2361 if ( GTKNeedsParent() )
2362 {
2363 wxCHECK_MSG( parent, false, wxT("Must have non-NULL parent") );
2364 }
2365
2366 // Use either the given size, or the default if -1 is given.
2367 // See wxWindowBase for these functions.
2368 m_width = WidthDefault(size.x) ;
2369 m_height = HeightDefault(size.y);
2370
2371 if (pos != wxDefaultPosition)
2372 {
2373 m_x = pos.x;
2374 m_y = pos.y;
2375 }
2376
2377 return true;
2378 }
2379
2380 void wxWindowGTK::PostCreation()
2381 {
2382 wxASSERT_MSG( (m_widget != NULL), wxT("invalid window") );
2383
2384 #if wxGTK_HAS_COMPOSITING_SUPPORT
2385 // Set RGBA visual as soon as possible to minimize the possibility that
2386 // somebody uses the wrong one.
2387 if ( m_backgroundStyle == wxBG_STYLE_TRANSPARENT &&
2388 IsTransparentBackgroundSupported() )
2389 {
2390 GdkScreen *screen = gtk_widget_get_screen (m_widget);
2391
2392 GdkColormap *rgba_colormap = gdk_screen_get_rgba_colormap (screen);
2393
2394 if (rgba_colormap)
2395 gtk_widget_set_colormap(m_widget, rgba_colormap);
2396 }
2397 #endif // wxGTK_HAS_COMPOSITING_SUPPORT
2398
2399 if (m_wxwindow)
2400 {
2401 if (!m_noExpose)
2402 {
2403 // these get reported to wxWidgets -> wxPaintEvent
2404
2405 g_signal_connect (m_wxwindow, "expose_event",
2406 G_CALLBACK (gtk_window_expose_callback), this);
2407
2408 if (GetLayoutDirection() == wxLayout_LeftToRight)
2409 gtk_widget_set_redraw_on_allocate(m_wxwindow, HasFlag(wxFULL_REPAINT_ON_RESIZE));
2410 }
2411
2412 // Create input method handler
2413 m_imData = new wxGtkIMData;
2414
2415 // Cannot handle drawing preedited text yet
2416 gtk_im_context_set_use_preedit( m_imData->context, FALSE );
2417
2418 g_signal_connect (m_imData->context, "commit",
2419 G_CALLBACK (gtk_wxwindow_commit_cb), this);
2420 g_signal_connect(m_wxwindow, "unrealize", G_CALLBACK(unrealize), this);
2421 }
2422
2423 // focus handling
2424
2425 if (!GTK_IS_WINDOW(m_widget))
2426 {
2427 if (m_focusWidget == NULL)
2428 m_focusWidget = m_widget;
2429
2430 if (m_wxwindow)
2431 {
2432 g_signal_connect (m_focusWidget, "focus_in_event",
2433 G_CALLBACK (gtk_window_focus_in_callback), this);
2434 g_signal_connect (m_focusWidget, "focus_out_event",
2435 G_CALLBACK (gtk_window_focus_out_callback), this);
2436 }
2437 else
2438 {
2439 g_signal_connect_after (m_focusWidget, "focus_in_event",
2440 G_CALLBACK (gtk_window_focus_in_callback), this);
2441 g_signal_connect_after (m_focusWidget, "focus_out_event",
2442 G_CALLBACK (gtk_window_focus_out_callback), this);
2443 }
2444 }
2445
2446 if ( !AcceptsFocusFromKeyboard() )
2447 {
2448 SetCanFocus(false);
2449
2450 g_signal_connect(m_widget, "focus",
2451 G_CALLBACK(wx_window_focus_callback), this);
2452 }
2453
2454 // connect to the various key and mouse handlers
2455
2456 GtkWidget *connect_widget = GetConnectWidget();
2457
2458 ConnectWidget( connect_widget );
2459
2460 // We cannot set colours, fonts and cursors before the widget has been
2461 // realized, so we do this directly after realization -- unless the widget
2462 // was in fact realized already.
2463 if ( gtk_widget_get_realized(connect_widget) )
2464 {
2465 gtk_window_realized_callback(connect_widget, this);
2466 }
2467 else
2468 {
2469 g_signal_connect (connect_widget, "realize",
2470 G_CALLBACK (gtk_window_realized_callback), this);
2471 }
2472
2473 if (!IsTopLevel())
2474 {
2475 g_signal_connect(m_wxwindow ? m_wxwindow : m_widget, "size_allocate",
2476 G_CALLBACK(size_allocate), this);
2477 }
2478
2479 #if GTK_CHECK_VERSION(2, 8, 0)
2480 if ( gtk_check_version(2,8,0) == NULL )
2481 {
2482 // Make sure we can notify the app when mouse capture is lost
2483 if ( m_wxwindow )
2484 {
2485 g_signal_connect (m_wxwindow, "grab_broken_event",
2486 G_CALLBACK (gtk_window_grab_broken), this);
2487 }
2488
2489 if ( connect_widget != m_wxwindow )
2490 {
2491 g_signal_connect (connect_widget, "grab_broken_event",
2492 G_CALLBACK (gtk_window_grab_broken), this);
2493 }
2494 }
2495 #endif // GTK+ >= 2.8
2496
2497 if ( GTKShouldConnectSizeRequest() )
2498 {
2499 // This is needed if we want to add our windows into native
2500 // GTK controls, such as the toolbar. With this callback, the
2501 // toolbar gets to know the correct size (the one set by the
2502 // programmer). Sadly, it misbehaves for wxComboBox.
2503 g_signal_connect (m_widget, "size_request",
2504 G_CALLBACK (wxgtk_window_size_request_callback),
2505 this);
2506 }
2507
2508 InheritAttributes();
2509
2510 m_hasVMT = true;
2511
2512 SetLayoutDirection(wxLayout_Default);
2513
2514 // unless the window was created initially hidden (i.e. Hide() had been
2515 // called before Create()), we should show it at GTK+ level as well
2516 if ( IsShown() )
2517 gtk_widget_show( m_widget );
2518 }
2519
2520 unsigned long
2521 wxWindowGTK::GTKConnectWidget(const char *signal, wxGTKCallback callback)
2522 {
2523 return g_signal_connect(m_widget, signal, callback, this);
2524 }
2525
2526 void wxWindowGTK::ConnectWidget( GtkWidget *widget )
2527 {
2528 g_signal_connect (widget, "key_press_event",
2529 G_CALLBACK (gtk_window_key_press_callback), this);
2530 g_signal_connect (widget, "key_release_event",
2531 G_CALLBACK (gtk_window_key_release_callback), this);
2532 g_signal_connect (widget, "button_press_event",
2533 G_CALLBACK (gtk_window_button_press_callback), this);
2534 g_signal_connect (widget, "button_release_event",
2535 G_CALLBACK (gtk_window_button_release_callback), this);
2536 g_signal_connect (widget, "motion_notify_event",
2537 G_CALLBACK (gtk_window_motion_notify_callback), this);
2538
2539 g_signal_connect (widget, "scroll_event",
2540 G_CALLBACK (window_scroll_event), this);
2541 if (m_scrollBar[ScrollDir_Horz])
2542 g_signal_connect (m_scrollBar[ScrollDir_Horz], "scroll_event",
2543 G_CALLBACK (window_scroll_event_hscrollbar), this);
2544 if (m_scrollBar[ScrollDir_Vert])
2545 g_signal_connect (m_scrollBar[ScrollDir_Vert], "scroll_event",
2546 G_CALLBACK (window_scroll_event), this);
2547
2548 g_signal_connect (widget, "popup_menu",
2549 G_CALLBACK (wxgtk_window_popup_menu_callback), this);
2550 g_signal_connect (widget, "enter_notify_event",
2551 G_CALLBACK (gtk_window_enter_callback), this);
2552 g_signal_connect (widget, "leave_notify_event",
2553 G_CALLBACK (gtk_window_leave_callback), this);
2554
2555 if (m_wxwindow && (IsTopLevel() || HasFlag(wxBORDER_RAISED | wxBORDER_SUNKEN | wxBORDER_THEME)))
2556 g_signal_connect (m_wxwindow, "style_set",
2557 G_CALLBACK (gtk_window_style_set_callback), this);
2558 }
2559
2560 bool wxWindowGTK::Destroy()
2561 {
2562 m_hasVMT = false;
2563
2564 return wxWindowBase::Destroy();
2565 }
2566
2567 void wxWindowGTK::DoMoveWindow(int x, int y, int width, int height)
2568 {
2569 gtk_widget_set_size_request(m_widget, width, height);
2570
2571 // inform the parent to perform the move
2572 wxASSERT_MSG(m_parent && m_parent->m_wxwindow,
2573 "the parent window has no client area?");
2574 WX_PIZZA(m_parent->m_wxwindow)->move(m_widget, x, y);
2575 }
2576
2577 void wxWindowGTK::ConstrainSize()
2578 {
2579 #ifdef __WXGPE__
2580 // GPE's window manager doesn't like size hints at all, esp. when the user
2581 // has to use the virtual keyboard, so don't constrain size there
2582 if (!IsTopLevel())
2583 #endif
2584 {
2585 const wxSize minSize = GetMinSize();
2586 const wxSize maxSize = GetMaxSize();
2587 if (minSize.x > 0 && m_width < minSize.x) m_width = minSize.x;
2588 if (minSize.y > 0 && m_height < minSize.y) m_height = minSize.y;
2589 if (maxSize.x > 0 && m_width > maxSize.x) m_width = maxSize.x;
2590 if (maxSize.y > 0 && m_height > maxSize.y) m_height = maxSize.y;
2591 }
2592 }
2593
2594 void wxWindowGTK::DoSetSize( int x, int y, int width, int height, int sizeFlags )
2595 {
2596 wxASSERT_MSG( (m_widget != NULL), wxT("invalid window") );
2597 wxASSERT_MSG( (m_parent != NULL), wxT("wxWindowGTK::SetSize requires parent.\n") );
2598
2599 if ((sizeFlags & wxSIZE_ALLOW_MINUS_ONE) == 0 && (x == -1 || y == -1))
2600 {
2601 int currentX, currentY;
2602 GetPosition(&currentX, &currentY);
2603 if (x == -1)
2604 x = currentX;
2605 if (y == -1)
2606 y = currentY;
2607 }
2608
2609 // calculate the best size if we should auto size the window
2610 if ( ((sizeFlags & wxSIZE_AUTO_WIDTH) && width == -1) ||
2611 ((sizeFlags & wxSIZE_AUTO_HEIGHT) && height == -1) )
2612 {
2613 const wxSize sizeBest = GetBestSize();
2614 if ( (sizeFlags & wxSIZE_AUTO_WIDTH) && width == -1 )
2615 width = sizeBest.x;
2616 if ( (sizeFlags & wxSIZE_AUTO_HEIGHT) && height == -1 )
2617 height = sizeBest.y;
2618 }
2619
2620 const wxSize oldSize(m_width, m_height);
2621 if (width != -1)
2622 m_width = width;
2623 if (height != -1)
2624 m_height = height;
2625
2626 if (m_parent->m_wxwindow)
2627 {
2628 wxPizza* pizza = WX_PIZZA(m_parent->m_wxwindow);
2629 m_x = x + pizza->m_scroll_x;
2630 m_y = y + pizza->m_scroll_y;
2631
2632 int left_border = 0;
2633 int right_border = 0;
2634 int top_border = 0;
2635 int bottom_border = 0;
2636
2637 /* the default button has a border around it */
2638 if (gtk_widget_get_can_default(m_widget))
2639 {
2640 GtkBorder *default_border = NULL;
2641 gtk_widget_style_get( m_widget, "default_border", &default_border, NULL );
2642 if (default_border)
2643 {
2644 left_border += default_border->left;
2645 right_border += default_border->right;
2646 top_border += default_border->top;
2647 bottom_border += default_border->bottom;
2648 gtk_border_free( default_border );
2649 }
2650 }
2651
2652 DoMoveWindow( m_x - left_border,
2653 m_y - top_border,
2654 m_width+left_border+right_border,
2655 m_height+top_border+bottom_border );
2656 }
2657
2658 if (m_width != oldSize.x || m_height != oldSize.y)
2659 {
2660 // update these variables to keep size_allocate handler
2661 // from sending another size event for this change
2662 GetClientSize( &m_oldClientWidth, &m_oldClientHeight );
2663
2664 gtk_widget_queue_resize(m_widget);
2665 if (!m_nativeSizeEvent)
2666 {
2667 wxSizeEvent event( wxSize(m_width,m_height), GetId() );
2668 event.SetEventObject( this );
2669 HandleWindowEvent( event );
2670 }
2671 } else
2672 if (sizeFlags & wxSIZE_FORCE_EVENT)
2673 {
2674 wxSizeEvent event( wxSize(m_width,m_height), GetId() );
2675 event.SetEventObject( this );
2676 HandleWindowEvent( event );
2677 }
2678 }
2679
2680 bool wxWindowGTK::GTKShowFromOnIdle()
2681 {
2682 if (IsShown() && m_showOnIdle && !gtk_widget_get_visible (m_widget))
2683 {
2684 GtkAllocation alloc;
2685 alloc.x = m_x;
2686 alloc.y = m_y;
2687 alloc.width = m_width;
2688 alloc.height = m_height;
2689 gtk_widget_size_allocate( m_widget, &alloc );
2690 gtk_widget_show( m_widget );
2691 wxShowEvent eventShow(GetId(), true);
2692 eventShow.SetEventObject(this);
2693 HandleWindowEvent(eventShow);
2694 m_showOnIdle = false;
2695 return true;
2696 }
2697
2698 return false;
2699 }
2700
2701 void wxWindowGTK::OnInternalIdle()
2702 {
2703 if ( gs_deferredFocusOut )
2704 GTKHandleDeferredFocusOut();
2705
2706 // Check if we have to show window now
2707 if (GTKShowFromOnIdle()) return;
2708
2709 if ( m_dirtyTabOrder )
2710 {
2711 m_dirtyTabOrder = false;
2712 RealizeTabOrder();
2713 }
2714
2715 wxWindowBase::OnInternalIdle();
2716 }
2717
2718 void wxWindowGTK::DoGetSize( int *width, int *height ) const
2719 {
2720 if (width) (*width) = m_width;
2721 if (height) (*height) = m_height;
2722 }
2723
2724 void wxWindowGTK::DoSetClientSize( int width, int height )
2725 {
2726 wxCHECK_RET( (m_widget != NULL), wxT("invalid window") );
2727
2728 const wxSize size = GetSize();
2729 const wxSize clientSize = GetClientSize();
2730 SetSize(width + (size.x - clientSize.x), height + (size.y - clientSize.y));
2731 }
2732
2733 void wxWindowGTK::DoGetClientSize( int *width, int *height ) const
2734 {
2735 wxCHECK_RET( (m_widget != NULL), wxT("invalid window") );
2736
2737 int w = m_width;
2738 int h = m_height;
2739
2740 if ( m_wxwindow )
2741 {
2742 // if window is scrollable, account for scrollbars
2743 if ( GTK_IS_SCROLLED_WINDOW(m_widget) )
2744 {
2745 GtkPolicyType policy[ScrollDir_Max];
2746 gtk_scrolled_window_get_policy(GTK_SCROLLED_WINDOW(m_widget),
2747 &policy[ScrollDir_Horz],
2748 &policy[ScrollDir_Vert]);
2749
2750 for ( int i = 0; i < ScrollDir_Max; i++ )
2751 {
2752 // don't account for the scrollbars we don't have
2753 GtkRange * const range = m_scrollBar[i];
2754 if ( !range )
2755 continue;
2756
2757 // nor for the ones we have but don't current show
2758 switch ( policy[i] )
2759 {
2760 case GTK_POLICY_NEVER:
2761 // never shown so doesn't take any place
2762 continue;
2763
2764 case GTK_POLICY_ALWAYS:
2765 // no checks necessary
2766 break;
2767
2768 case GTK_POLICY_AUTOMATIC:
2769 // may be shown or not, check
2770 GtkAdjustment *adj = gtk_range_get_adjustment(range);
2771 if (gtk_adjustment_get_upper(adj) <= gtk_adjustment_get_page_size(adj))
2772 continue;
2773 }
2774
2775 GtkScrolledWindowClass *scroll_class =
2776 GTK_SCROLLED_WINDOW_CLASS( GTK_OBJECT_GET_CLASS(m_widget) );
2777
2778 GtkRequisition req;
2779 gtk_widget_size_request(GTK_WIDGET(range), &req);
2780 if (i == ScrollDir_Horz)
2781 h -= req.height + scroll_class->scrollbar_spacing;
2782 else
2783 w -= req.width + scroll_class->scrollbar_spacing;
2784 }
2785 }
2786
2787 const wxSize sizeBorders = DoGetBorderSize();
2788 w -= sizeBorders.x;
2789 h -= sizeBorders.y;
2790
2791 if (w < 0)
2792 w = 0;
2793 if (h < 0)
2794 h = 0;
2795 }
2796
2797 if (width) *width = w;
2798 if (height) *height = h;
2799 }
2800
2801 wxSize wxWindowGTK::DoGetBorderSize() const
2802 {
2803 if ( !m_wxwindow )
2804 return wxWindowBase::DoGetBorderSize();
2805
2806 int x, y;
2807 WX_PIZZA(m_wxwindow)->get_border_widths(x, y);
2808
2809 return 2*wxSize(x, y);
2810 }
2811
2812 void wxWindowGTK::DoGetPosition( int *x, int *y ) const
2813 {
2814 int dx = 0;
2815 int dy = 0;
2816 GtkWidget* parent = NULL;
2817 if (m_widget)
2818 parent = gtk_widget_get_parent(m_widget);
2819 if (WX_IS_PIZZA(parent))
2820 {
2821 wxPizza* pizza = WX_PIZZA(parent);
2822 dx = pizza->m_scroll_x;
2823 dy = pizza->m_scroll_y;
2824 }
2825 if (x) (*x) = m_x - dx;
2826 if (y) (*y) = m_y - dy;
2827 }
2828
2829 void wxWindowGTK::DoClientToScreen( int *x, int *y ) const
2830 {
2831 wxCHECK_RET( (m_widget != NULL), wxT("invalid window") );
2832
2833 if (gtk_widget_get_window(m_widget) == NULL) return;
2834
2835 GdkWindow *source = NULL;
2836 if (m_wxwindow)
2837 source = gtk_widget_get_window(m_wxwindow);
2838 else
2839 source = gtk_widget_get_window(m_widget);
2840
2841 int org_x = 0;
2842 int org_y = 0;
2843 gdk_window_get_origin( source, &org_x, &org_y );
2844
2845 if (!m_wxwindow)
2846 {
2847 if (!gtk_widget_get_has_window(m_widget))
2848 {
2849 GtkAllocation a;
2850 gtk_widget_get_allocation(m_widget, &a);
2851 org_x += a.x;
2852 org_y += a.y;
2853 }
2854 }
2855
2856
2857 if (x)
2858 {
2859 if (GetLayoutDirection() == wxLayout_RightToLeft)
2860 *x = (GetClientSize().x - *x) + org_x;
2861 else
2862 *x += org_x;
2863 }
2864
2865 if (y) *y += org_y;
2866 }
2867
2868 void wxWindowGTK::DoScreenToClient( int *x, int *y ) const
2869 {
2870 wxCHECK_RET( (m_widget != NULL), wxT("invalid window") );
2871
2872 if (!gtk_widget_get_realized(m_widget)) return;
2873
2874 GdkWindow *source = NULL;
2875 if (m_wxwindow)
2876 source = gtk_widget_get_window(m_wxwindow);
2877 else
2878 source = gtk_widget_get_window(m_widget);
2879
2880 int org_x = 0;
2881 int org_y = 0;
2882 gdk_window_get_origin( source, &org_x, &org_y );
2883
2884 if (!m_wxwindow)
2885 {
2886 if (!gtk_widget_get_has_window(m_widget))
2887 {
2888 GtkAllocation a;
2889 gtk_widget_get_allocation(m_widget, &a);
2890 org_x += a.x;
2891 org_y += a.y;
2892 }
2893 }
2894
2895 if (x)
2896 {
2897 if (GetLayoutDirection() == wxLayout_RightToLeft)
2898 *x = (GetClientSize().x - *x) - org_x;
2899 else
2900 *x -= org_x;
2901 }
2902 if (y) *y -= org_y;
2903 }
2904
2905 bool wxWindowGTK::Show( bool show )
2906 {
2907 if ( !wxWindowBase::Show(show) )
2908 {
2909 // nothing to do
2910 return false;
2911 }
2912
2913 // notice that we may call Hide() before the window is created and this is
2914 // actually useful to create it hidden initially -- but we can't call
2915 // Show() before it is created
2916 if ( !m_widget )
2917 {
2918 wxASSERT_MSG( !show, "can't show invalid window" );
2919 return true;
2920 }
2921
2922 if ( show )
2923 {
2924 if ( m_showOnIdle )
2925 {
2926 // defer until later
2927 return true;
2928 }
2929
2930 gtk_widget_show(m_widget);
2931 }
2932 else // hide
2933 {
2934 gtk_widget_hide(m_widget);
2935 }
2936
2937 wxShowEvent eventShow(GetId(), show);
2938 eventShow.SetEventObject(this);
2939 HandleWindowEvent(eventShow);
2940
2941 return true;
2942 }
2943
2944 void wxWindowGTK::DoEnable( bool enable )
2945 {
2946 wxCHECK_RET( (m_widget != NULL), wxT("invalid window") );
2947
2948 gtk_widget_set_sensitive( m_widget, enable );
2949 if (m_wxwindow && (m_wxwindow != m_widget))
2950 gtk_widget_set_sensitive( m_wxwindow, enable );
2951 }
2952
2953 int wxWindowGTK::GetCharHeight() const
2954 {
2955 wxCHECK_MSG( (m_widget != NULL), 12, wxT("invalid window") );
2956
2957 wxFont font = GetFont();
2958 wxCHECK_MSG( font.IsOk(), 12, wxT("invalid font") );
2959
2960 PangoContext* context = gtk_widget_get_pango_context(m_widget);
2961
2962 if (!context)
2963 return 0;
2964
2965 PangoFontDescription *desc = font.GetNativeFontInfo()->description;
2966 PangoLayout *layout = pango_layout_new(context);
2967 pango_layout_set_font_description(layout, desc);
2968 pango_layout_set_text(layout, "H", 1);
2969 PangoLayoutLine *line = (PangoLayoutLine *)pango_layout_get_lines(layout)->data;
2970
2971 PangoRectangle rect;
2972 pango_layout_line_get_extents(line, NULL, &rect);
2973
2974 g_object_unref (layout);
2975
2976 return (int) PANGO_PIXELS(rect.height);
2977 }
2978
2979 int wxWindowGTK::GetCharWidth() const
2980 {
2981 wxCHECK_MSG( (m_widget != NULL), 8, wxT("invalid window") );
2982
2983 wxFont font = GetFont();
2984 wxCHECK_MSG( font.IsOk(), 8, wxT("invalid font") );
2985
2986 PangoContext* context = gtk_widget_get_pango_context(m_widget);
2987
2988 if (!context)
2989 return 0;
2990
2991 PangoFontDescription *desc = font.GetNativeFontInfo()->description;
2992 PangoLayout *layout = pango_layout_new(context);
2993 pango_layout_set_font_description(layout, desc);
2994 pango_layout_set_text(layout, "g", 1);
2995 PangoLayoutLine *line = (PangoLayoutLine *)pango_layout_get_lines(layout)->data;
2996
2997 PangoRectangle rect;
2998 pango_layout_line_get_extents(line, NULL, &rect);
2999
3000 g_object_unref (layout);
3001
3002 return (int) PANGO_PIXELS(rect.width);
3003 }
3004
3005 void wxWindowGTK::DoGetTextExtent( const wxString& string,
3006 int *x,
3007 int *y,
3008 int *descent,
3009 int *externalLeading,
3010 const wxFont *theFont ) const
3011 {
3012 wxFont fontToUse = theFont ? *theFont : GetFont();
3013
3014 wxCHECK_RET( fontToUse.IsOk(), wxT("invalid font") );
3015
3016 if (string.empty())
3017 {
3018 if (x) (*x) = 0;
3019 if (y) (*y) = 0;
3020 return;
3021 }
3022
3023 PangoContext *context = NULL;
3024 if (m_widget)
3025 context = gtk_widget_get_pango_context( m_widget );
3026
3027 if (!context)
3028 {
3029 if (x) (*x) = 0;
3030 if (y) (*y) = 0;
3031 return;
3032 }
3033
3034 PangoFontDescription *desc = fontToUse.GetNativeFontInfo()->description;
3035 PangoLayout *layout = pango_layout_new(context);
3036 pango_layout_set_font_description(layout, desc);
3037 {
3038 const wxCharBuffer data = wxGTK_CONV( string );
3039 if ( data )
3040 pango_layout_set_text(layout, data, strlen(data));
3041 }
3042
3043 PangoRectangle rect;
3044 pango_layout_get_extents(layout, NULL, &rect);
3045
3046 if (x) (*x) = (wxCoord) PANGO_PIXELS(rect.width);
3047 if (y) (*y) = (wxCoord) PANGO_PIXELS(rect.height);
3048 if (descent)
3049 {
3050 PangoLayoutIter *iter = pango_layout_get_iter(layout);
3051 int baseline = pango_layout_iter_get_baseline(iter);
3052 pango_layout_iter_free(iter);
3053 *descent = *y - PANGO_PIXELS(baseline);
3054 }
3055 if (externalLeading) (*externalLeading) = 0; // ??
3056
3057 g_object_unref (layout);
3058 }
3059
3060 void wxWindowGTK::GTKDisableFocusOutEvent()
3061 {
3062 g_signal_handlers_block_by_func( m_focusWidget,
3063 (gpointer) gtk_window_focus_out_callback, this);
3064 }
3065
3066 void wxWindowGTK::GTKEnableFocusOutEvent()
3067 {
3068 g_signal_handlers_unblock_by_func( m_focusWidget,
3069 (gpointer) gtk_window_focus_out_callback, this);
3070 }
3071
3072 bool wxWindowGTK::GTKHandleFocusIn()
3073 {
3074 // Disable default focus handling for custom windows since the default GTK+
3075 // handler issues a repaint
3076 const bool retval = m_wxwindow ? true : false;
3077
3078
3079 // NB: if there's still unprocessed deferred focus-out event (see
3080 // GTKHandleFocusOut() for explanation), we need to process it first so
3081 // that the order of focus events -- focus-out first, then focus-in
3082 // elsewhere -- is preserved
3083 if ( gs_deferredFocusOut )
3084 {
3085 if ( GTKNeedsToFilterSameWindowFocus() &&
3086 gs_deferredFocusOut == this )
3087 {
3088 // GTK+ focus changed from this wxWindow back to itself, so don't
3089 // emit any events at all
3090 wxLogTrace(TRACE_FOCUS,
3091 "filtered out spurious focus change within %s(%p, %s)",
3092 GetClassInfo()->GetClassName(), this, GetLabel());
3093 gs_deferredFocusOut = NULL;
3094 return retval;
3095 }
3096
3097 // otherwise we need to send focus-out first
3098 wxASSERT_MSG ( gs_deferredFocusOut != this,
3099 "GTKHandleFocusIn(GTKFocus_Normal) called even though focus changed back to itself - derived class should handle this" );
3100 GTKHandleDeferredFocusOut();
3101 }
3102
3103
3104 wxLogTrace(TRACE_FOCUS,
3105 "handling focus_in event for %s(%p, %s)",
3106 GetClassInfo()->GetClassName(), this, GetLabel());
3107
3108 if (m_imData)
3109 gtk_im_context_focus_in(m_imData->context);
3110
3111 gs_currentFocus = this;
3112 gs_pendingFocus = NULL;
3113
3114 #if wxUSE_CARET
3115 // caret needs to be informed about focus change
3116 wxCaret *caret = GetCaret();
3117 if ( caret )
3118 {
3119 caret->OnSetFocus();
3120 }
3121 #endif // wxUSE_CARET
3122
3123 // Notify the parent keeping track of focus for the kbd navigation
3124 // purposes that we got it.
3125 wxChildFocusEvent eventChildFocus(static_cast<wxWindow*>(this));
3126 GTKProcessEvent(eventChildFocus);
3127
3128 wxFocusEvent eventFocus(wxEVT_SET_FOCUS, GetId());
3129 eventFocus.SetEventObject(this);
3130 GTKProcessEvent(eventFocus);
3131
3132 return retval;
3133 }
3134
3135 bool wxWindowGTK::GTKHandleFocusOut()
3136 {
3137 // Disable default focus handling for custom windows since the default GTK+
3138 // handler issues a repaint
3139 const bool retval = m_wxwindow ? true : false;
3140
3141
3142 // NB: If a control is composed of several GtkWidgets and when focus
3143 // changes from one of them to another within the same wxWindow, we get
3144 // a focus-out event followed by focus-in for another GtkWidget owned
3145 // by the same wx control. We don't want to generate two spurious
3146 // wxEVT_SET_FOCUS events in this case, so we defer sending wx events
3147 // from GTKHandleFocusOut() until we know for sure it's not coming back
3148 // (i.e. in GTKHandleFocusIn() or at idle time).
3149 if ( GTKNeedsToFilterSameWindowFocus() )
3150 {
3151 wxASSERT_MSG( gs_deferredFocusOut == NULL,
3152 "deferred focus out event already pending" );
3153 wxLogTrace(TRACE_FOCUS,
3154 "deferring focus_out event for %s(%p, %s)",
3155 GetClassInfo()->GetClassName(), this, GetLabel());
3156 gs_deferredFocusOut = this;
3157 return retval;
3158 }
3159
3160 GTKHandleFocusOutNoDeferring();
3161
3162 return retval;
3163 }
3164
3165 void wxWindowGTK::GTKHandleFocusOutNoDeferring()
3166 {
3167 wxLogTrace(TRACE_FOCUS,
3168 "handling focus_out event for %s(%p, %s)",
3169 GetClassInfo()->GetClassName(), this, GetLabel());
3170
3171 if (m_imData)
3172 gtk_im_context_focus_out(m_imData->context);
3173
3174 if ( gs_currentFocus != this )
3175 {
3176 // Something is terribly wrong, gs_currentFocus is out of sync with the
3177 // real focus. We will reset it to NULL anyway, because after this
3178 // focus-out event is handled, one of the following with happen:
3179 //
3180 // * either focus will go out of the app altogether, in which case
3181 // gs_currentFocus _should_ be NULL
3182 //
3183 // * or it goes to another control, in which case focus-in event will
3184 // follow immediately and it will set gs_currentFocus to the right
3185 // value
3186 wxLogDebug("window %s(%p, %s) lost focus even though it didn't have it",
3187 GetClassInfo()->GetClassName(), this, GetLabel());
3188 }
3189 gs_currentFocus = NULL;
3190
3191 #if wxUSE_CARET
3192 // caret needs to be informed about focus change
3193 wxCaret *caret = GetCaret();
3194 if ( caret )
3195 {
3196 caret->OnKillFocus();
3197 }
3198 #endif // wxUSE_CARET
3199
3200 wxFocusEvent event( wxEVT_KILL_FOCUS, GetId() );
3201 event.SetEventObject( this );
3202 event.SetWindow( FindFocus() );
3203 GTKProcessEvent( event );
3204 }
3205
3206 /*static*/
3207 void wxWindowGTK::GTKHandleDeferredFocusOut()
3208 {
3209 // NB: See GTKHandleFocusOut() for explanation. This function is called
3210 // from either GTKHandleFocusIn() or OnInternalIdle() to process
3211 // deferred event.
3212 if ( gs_deferredFocusOut )
3213 {
3214 wxWindowGTK *win = gs_deferredFocusOut;
3215 gs_deferredFocusOut = NULL;
3216
3217 wxLogTrace(TRACE_FOCUS,
3218 "processing deferred focus_out event for %s(%p, %s)",
3219 win->GetClassInfo()->GetClassName(), win, win->GetLabel());
3220
3221 win->GTKHandleFocusOutNoDeferring();
3222 }
3223 }
3224
3225 void wxWindowGTK::SetFocus()
3226 {
3227 wxCHECK_RET( m_widget != NULL, wxT("invalid window") );
3228
3229 // Setting "physical" focus is not immediate in GTK+ and while
3230 // gtk_widget_is_focus ("determines if the widget is the focus widget
3231 // within its toplevel", i.e. returns true for one widget per TLW, not
3232 // globally) returns true immediately after grabbing focus,
3233 // GTK_WIDGET_HAS_FOCUS (which returns true only for the one widget that
3234 // has focus at the moment) takes effect only after the window is shown
3235 // (if it was hidden at the moment of the call) or at the next event loop
3236 // iteration.
3237 //
3238 // Because we want to FindFocus() call immediately following
3239 // foo->SetFocus() to return foo, we have to keep track of "pending" focus
3240 // ourselves.
3241 gs_pendingFocus = this;
3242
3243 GtkWidget *widget = m_wxwindow ? m_wxwindow : m_focusWidget;
3244
3245 if ( GTK_IS_CONTAINER(widget) &&
3246 !gtk_widget_get_can_focus(widget) )
3247 {
3248 wxLogTrace(TRACE_FOCUS,
3249 wxT("Setting focus to a child of %s(%p, %s)"),
3250 GetClassInfo()->GetClassName(), this, GetLabel().c_str());
3251 gtk_widget_child_focus(widget, GTK_DIR_TAB_FORWARD);
3252 }
3253 else
3254 {
3255 wxLogTrace(TRACE_FOCUS,
3256 wxT("Setting focus to %s(%p, %s)"),
3257 GetClassInfo()->GetClassName(), this, GetLabel().c_str());
3258 gtk_widget_grab_focus(widget);
3259 }
3260 }
3261
3262 void wxWindowGTK::SetCanFocus(bool canFocus)
3263 {
3264 gtk_widget_set_can_focus(m_widget, canFocus);
3265
3266 if ( m_wxwindow && (m_widget != m_wxwindow) )
3267 {
3268 gtk_widget_set_can_focus(m_wxwindow, canFocus);
3269 }
3270 }
3271
3272 bool wxWindowGTK::Reparent( wxWindowBase *newParentBase )
3273 {
3274 wxCHECK_MSG( (m_widget != NULL), false, wxT("invalid window") );
3275
3276 wxWindowGTK * const newParent = (wxWindowGTK *)newParentBase;
3277
3278 wxASSERT( GTK_IS_WIDGET(m_widget) );
3279
3280 if ( !wxWindowBase::Reparent(newParent) )
3281 return false;
3282
3283 wxASSERT( GTK_IS_WIDGET(m_widget) );
3284
3285 // Notice that old m_parent pointer might be non-NULL here but the widget
3286 // still not have any parent at GTK level if it's a notebook page that had
3287 // been removed from the notebook so test this at GTK level and not wx one.
3288 if ( GtkWidget *parentGTK = gtk_widget_get_parent(m_widget) )
3289 gtk_container_remove(GTK_CONTAINER(parentGTK), m_widget);
3290
3291 wxASSERT( GTK_IS_WIDGET(m_widget) );
3292
3293 if (newParent)
3294 {
3295 if (gtk_widget_get_visible (newParent->m_widget))
3296 {
3297 m_showOnIdle = true;
3298 gtk_widget_hide( m_widget );
3299 }
3300 /* insert GTK representation */
3301 newParent->AddChildGTK(this);
3302 }
3303
3304 SetLayoutDirection(wxLayout_Default);
3305
3306 return true;
3307 }
3308
3309 void wxWindowGTK::DoAddChild(wxWindowGTK *child)
3310 {
3311 wxASSERT_MSG( (m_widget != NULL), wxT("invalid window") );
3312 wxASSERT_MSG( (child != NULL), wxT("invalid child window") );
3313
3314 /* add to list */
3315 AddChild( child );
3316
3317 /* insert GTK representation */
3318 AddChildGTK(child);
3319 }
3320
3321 void wxWindowGTK::AddChild(wxWindowBase *child)
3322 {
3323 wxWindowBase::AddChild(child);
3324 m_dirtyTabOrder = true;
3325 wxTheApp->WakeUpIdle();
3326 }
3327
3328 void wxWindowGTK::RemoveChild(wxWindowBase *child)
3329 {
3330 wxWindowBase::RemoveChild(child);
3331 m_dirtyTabOrder = true;
3332 wxTheApp->WakeUpIdle();
3333 }
3334
3335 /* static */
3336 wxLayoutDirection wxWindowGTK::GTKGetLayout(GtkWidget *widget)
3337 {
3338 return gtk_widget_get_direction(widget) == GTK_TEXT_DIR_RTL
3339 ? wxLayout_RightToLeft
3340 : wxLayout_LeftToRight;
3341 }
3342
3343 /* static */
3344 void wxWindowGTK::GTKSetLayout(GtkWidget *widget, wxLayoutDirection dir)
3345 {
3346 wxASSERT_MSG( dir != wxLayout_Default, wxT("invalid layout direction") );
3347
3348 gtk_widget_set_direction(widget,
3349 dir == wxLayout_RightToLeft ? GTK_TEXT_DIR_RTL
3350 : GTK_TEXT_DIR_LTR);
3351 }
3352
3353 wxLayoutDirection wxWindowGTK::GetLayoutDirection() const
3354 {
3355 return GTKGetLayout(m_widget);
3356 }
3357
3358 void wxWindowGTK::SetLayoutDirection(wxLayoutDirection dir)
3359 {
3360 if ( dir == wxLayout_Default )
3361 {
3362 const wxWindow *const parent = GetParent();
3363 if ( parent )
3364 {
3365 // inherit layout from parent.
3366 dir = parent->GetLayoutDirection();
3367 }
3368 else // no parent, use global default layout
3369 {
3370 dir = wxTheApp->GetLayoutDirection();
3371 }
3372 }
3373
3374 if ( dir == wxLayout_Default )
3375 return;
3376
3377 GTKSetLayout(m_widget, dir);
3378
3379 if (m_wxwindow && (m_wxwindow != m_widget))
3380 GTKSetLayout(m_wxwindow, dir);
3381 }
3382
3383 wxCoord
3384 wxWindowGTK::AdjustForLayoutDirection(wxCoord x,
3385 wxCoord WXUNUSED(width),
3386 wxCoord WXUNUSED(widthTotal)) const
3387 {
3388 // We now mirror the coordinates of RTL windows in wxPizza
3389 return x;
3390 }
3391
3392 void wxWindowGTK::DoMoveInTabOrder(wxWindow *win, WindowOrder move)
3393 {
3394 wxWindowBase::DoMoveInTabOrder(win, move);
3395 m_dirtyTabOrder = true;
3396 wxTheApp->WakeUpIdle();
3397 }
3398
3399 bool wxWindowGTK::DoNavigateIn(int flags)
3400 {
3401 if ( flags & wxNavigationKeyEvent::WinChange )
3402 {
3403 wxFAIL_MSG( wxT("not implemented") );
3404
3405 return false;
3406 }
3407 else // navigate inside the container
3408 {
3409 wxWindow *parent = wxGetTopLevelParent((wxWindow *)this);
3410 wxCHECK_MSG( parent, false, wxT("every window must have a TLW parent") );
3411
3412 GtkDirectionType dir;
3413 dir = flags & wxNavigationKeyEvent::IsForward ? GTK_DIR_TAB_FORWARD
3414 : GTK_DIR_TAB_BACKWARD;
3415
3416 gboolean rc;
3417 g_signal_emit_by_name(parent->m_widget, "focus", dir, &rc);
3418
3419 return rc == TRUE;
3420 }
3421 }
3422
3423 bool wxWindowGTK::GTKWidgetNeedsMnemonic() const
3424 {
3425 // none needed by default
3426 return false;
3427 }
3428
3429 void wxWindowGTK::GTKWidgetDoSetMnemonic(GtkWidget* WXUNUSED(w))
3430 {
3431 // nothing to do by default since none is needed
3432 }
3433
3434 void wxWindowGTK::RealizeTabOrder()
3435 {
3436 if (m_wxwindow)
3437 {
3438 if ( !m_children.empty() )
3439 {
3440 // we don't only construct the correct focus chain but also use
3441 // this opportunity to update the mnemonic widgets for the widgets
3442 // that need them
3443
3444 GList *chain = NULL;
3445 wxWindowGTK* mnemonicWindow = NULL;
3446
3447 for ( wxWindowList::const_iterator i = m_children.begin();
3448 i != m_children.end();
3449 ++i )
3450 {
3451 wxWindowGTK *win = *i;
3452
3453 bool focusableFromKeyboard = win->AcceptsFocusFromKeyboard();
3454
3455 if ( mnemonicWindow )
3456 {
3457 if ( focusableFromKeyboard )
3458 {
3459 // wxComboBox et al. needs to focus on on a different
3460 // widget than m_widget, so if the main widget isn't
3461 // focusable try the connect widget
3462 GtkWidget* w = win->m_widget;
3463 if ( !gtk_widget_get_can_focus(w) )
3464 {
3465 w = win->GetConnectWidget();
3466 if ( !gtk_widget_get_can_focus(w) )
3467 w = NULL;
3468 }
3469
3470 if ( w )
3471 {
3472 mnemonicWindow->GTKWidgetDoSetMnemonic(w);
3473 mnemonicWindow = NULL;
3474 }
3475 }
3476 }
3477 else if ( win->GTKWidgetNeedsMnemonic() )
3478 {
3479 mnemonicWindow = win;
3480 }
3481
3482 if ( focusableFromKeyboard )
3483 chain = g_list_prepend(chain, win->m_widget);
3484 }
3485
3486 chain = g_list_reverse(chain);
3487
3488 gtk_container_set_focus_chain(GTK_CONTAINER(m_wxwindow), chain);
3489 g_list_free(chain);
3490 }
3491 else // no children
3492 {
3493 gtk_container_unset_focus_chain(GTK_CONTAINER(m_wxwindow));
3494 }
3495 }
3496 }
3497
3498 void wxWindowGTK::Raise()
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_raise(gtk_widget_get_window(m_wxwindow));
3505 }
3506 else if (gtk_widget_get_window(m_widget))
3507 {
3508 gdk_window_raise(gtk_widget_get_window(m_widget));
3509 }
3510 }
3511
3512 void wxWindowGTK::Lower()
3513 {
3514 wxCHECK_RET( (m_widget != NULL), wxT("invalid window") );
3515
3516 if (m_wxwindow && gtk_widget_get_window(m_wxwindow))
3517 {
3518 gdk_window_lower(gtk_widget_get_window(m_wxwindow));
3519 }
3520 else if (gtk_widget_get_window(m_widget))
3521 {
3522 gdk_window_lower(gtk_widget_get_window(m_widget));
3523 }
3524 }
3525
3526 bool wxWindowGTK::SetCursor( const wxCursor &cursor )
3527 {
3528 if ( !wxWindowBase::SetCursor(cursor.IsOk() ? cursor : *wxSTANDARD_CURSOR) )
3529 return false;
3530
3531 GTKUpdateCursor();
3532
3533 return true;
3534 }
3535
3536 void wxWindowGTK::GTKUpdateCursor(bool update_self /*=true*/, bool recurse /*=true*/)
3537 {
3538 if (update_self)
3539 {
3540 wxCursor cursor(g_globalCursor.IsOk() ? g_globalCursor : GetCursor());
3541 if ( cursor.IsOk() )
3542 {
3543 wxArrayGdkWindows windowsThis;
3544 GdkWindow* window = GTKGetWindow(windowsThis);
3545 if (window)
3546 gdk_window_set_cursor( window, cursor.GetCursor() );
3547 else
3548 {
3549 const size_t count = windowsThis.size();
3550 for ( size_t n = 0; n < count; n++ )
3551 {
3552 GdkWindow *win = windowsThis[n];
3553 // It can be zero if the window has not been realized yet.
3554 if ( win )
3555 {
3556 gdk_window_set_cursor(win, cursor.GetCursor());
3557 }
3558 }
3559 }
3560 }
3561 }
3562
3563 if (recurse)
3564 {
3565 for (wxWindowList::iterator it = GetChildren().begin(); it != GetChildren().end(); ++it)
3566 {
3567 (*it)->GTKUpdateCursor( true );
3568 }
3569 }
3570 }
3571
3572 void wxWindowGTK::WarpPointer( int x, int y )
3573 {
3574 wxCHECK_RET( (m_widget != NULL), wxT("invalid window") );
3575
3576 ClientToScreen(&x, &y);
3577 GdkDisplay* display = gtk_widget_get_display(m_widget);
3578 GdkScreen* screen = gtk_widget_get_screen(m_widget);
3579 #ifdef __WXGTK30__
3580 GdkDeviceManager* manager = gdk_display_get_device_manager(display);
3581 gdk_device_warp(gdk_device_manager_get_client_pointer(manager), screen, x, y);
3582 #else
3583 #ifdef GDK_WINDOWING_X11
3584 XWarpPointer(GDK_DISPLAY_XDISPLAY(display),
3585 None,
3586 GDK_WINDOW_XID(gdk_screen_get_root_window(screen)),
3587 0, 0, 0, 0, x, y);
3588 #endif
3589 #endif
3590 }
3591
3592 wxWindowGTK::ScrollDir wxWindowGTK::ScrollDirFromRange(GtkRange *range) const
3593 {
3594 // find the scrollbar which generated the event
3595 for ( int dir = 0; dir < ScrollDir_Max; dir++ )
3596 {
3597 if ( range == m_scrollBar[dir] )
3598 return (ScrollDir)dir;
3599 }
3600
3601 wxFAIL_MSG( wxT("event from unknown scrollbar received") );
3602
3603 return ScrollDir_Max;
3604 }
3605
3606 bool wxWindowGTK::DoScrollByUnits(ScrollDir dir, ScrollUnit unit, int units)
3607 {
3608 bool changed = false;
3609 GtkRange* range = m_scrollBar[dir];
3610 if ( range && units )
3611 {
3612 GtkAdjustment* adj = gtk_range_get_adjustment(range);
3613 double inc = unit == ScrollUnit_Line ? gtk_adjustment_get_step_increment(adj)
3614 : gtk_adjustment_get_page_increment(adj);
3615
3616 const int posOld = wxRound(gtk_adjustment_get_value(adj));
3617 gtk_range_set_value(range, posOld + units*inc);
3618
3619 changed = wxRound(gtk_adjustment_get_value(adj)) != posOld;
3620 }
3621
3622 return changed;
3623 }
3624
3625 bool wxWindowGTK::ScrollLines(int lines)
3626 {
3627 return DoScrollByUnits(ScrollDir_Vert, ScrollUnit_Line, lines);
3628 }
3629
3630 bool wxWindowGTK::ScrollPages(int pages)
3631 {
3632 return DoScrollByUnits(ScrollDir_Vert, ScrollUnit_Page, pages);
3633 }
3634
3635 void wxWindowGTK::Refresh(bool WXUNUSED(eraseBackground),
3636 const wxRect *rect)
3637 {
3638 if (m_wxwindow)
3639 {
3640 if (gtk_widget_get_mapped(m_wxwindow))
3641 {
3642 GdkWindow* window = gtk_widget_get_window(m_wxwindow);
3643 if (rect)
3644 {
3645 GdkRectangle r = { rect->x, rect->y, rect->width, rect->height };
3646 if (GetLayoutDirection() == wxLayout_RightToLeft)
3647 r.x = gdk_window_get_width(window) - r.x - rect->width;
3648 gdk_window_invalidate_rect(window, &r, true);
3649 }
3650 else
3651 gdk_window_invalidate_rect(window, NULL, true);
3652 }
3653 }
3654 else if (m_widget)
3655 {
3656 if (gtk_widget_get_mapped(m_widget))
3657 {
3658 if (rect)
3659 gtk_widget_queue_draw_area(m_widget, rect->x, rect->y, rect->width, rect->height);
3660 else
3661 gtk_widget_queue_draw(m_widget);
3662 }
3663 }
3664 }
3665
3666 void wxWindowGTK::Update()
3667 {
3668 if (m_widget && gtk_widget_get_mapped(m_widget))
3669 {
3670 GdkDisplay* display = gtk_widget_get_display(m_widget);
3671 // Flush everything out to the server, and wait for it to finish.
3672 // This ensures nothing will overwrite the drawing we are about to do.
3673 gdk_display_sync(display);
3674
3675 GdkWindow* window = GTKGetDrawingWindow();
3676 if (window == NULL)
3677 window = gtk_widget_get_window(m_widget);
3678 gdk_window_process_updates(window, true);
3679
3680 // Flush again, but no need to wait for it to finish
3681 gdk_display_flush(display);
3682 }
3683 }
3684
3685 bool wxWindowGTK::DoIsExposed( int x, int y ) const
3686 {
3687 return m_updateRegion.Contains(x, y) != wxOutRegion;
3688 }
3689
3690 bool wxWindowGTK::DoIsExposed( int x, int y, int w, int h ) const
3691 {
3692 if (GetLayoutDirection() == wxLayout_RightToLeft)
3693 return m_updateRegion.Contains(x-w, y, w, h) != wxOutRegion;
3694 else
3695 return m_updateRegion.Contains(x, y, w, h) != wxOutRegion;
3696 }
3697
3698 void wxWindowGTK::GtkSendPaintEvents()
3699 {
3700 if (!m_wxwindow)
3701 {
3702 m_updateRegion.Clear();
3703 return;
3704 }
3705 #if wxGTK_HAS_COMPOSITING_SUPPORT
3706 cairo_t* cr = NULL;
3707 #endif
3708 // Clip to paint region in wxClientDC
3709 m_clipPaintRegion = true;
3710
3711 m_nativeUpdateRegion = m_updateRegion;
3712
3713 if (GetLayoutDirection() == wxLayout_RightToLeft)
3714 {
3715 // Transform m_updateRegion under RTL
3716 m_updateRegion.Clear();
3717
3718 gint width;
3719 gdk_drawable_get_size(gtk_widget_get_window(m_wxwindow), &width, NULL);
3720
3721 wxRegionIterator upd( m_nativeUpdateRegion );
3722 while (upd)
3723 {
3724 wxRect rect;
3725 rect.x = upd.GetX();
3726 rect.y = upd.GetY();
3727 rect.width = upd.GetWidth();
3728 rect.height = upd.GetHeight();
3729
3730 rect.x = width - rect.x - rect.width;
3731 m_updateRegion.Union( rect );
3732
3733 ++upd;
3734 }
3735 }
3736
3737 switch ( GetBackgroundStyle() )
3738 {
3739 case wxBG_STYLE_TRANSPARENT:
3740 #if wxGTK_HAS_COMPOSITING_SUPPORT
3741 if (IsTransparentBackgroundSupported())
3742 {
3743 // Set a transparent background, so that overlaying in parent
3744 // might indeed let see through where this child did not
3745 // explicitly paint.
3746 // NB: it works also for top level windows (but this is the
3747 // windows manager which then does the compositing job)
3748 cr = gdk_cairo_create(m_wxwindow->window);
3749 gdk_cairo_region(cr, m_nativeUpdateRegion.GetRegion());
3750 cairo_clip(cr);
3751
3752 cairo_set_operator(cr, CAIRO_OPERATOR_CLEAR);
3753 cairo_paint(cr);
3754 cairo_set_operator(cr, CAIRO_OPERATOR_OVER);
3755 cairo_surface_flush(cairo_get_target(cr));
3756 }
3757 #endif // wxGTK_HAS_COMPOSITING_SUPPORT
3758 break;
3759
3760 case wxBG_STYLE_ERASE:
3761 {
3762 wxWindowDC dc( (wxWindow*)this );
3763 dc.SetDeviceClippingRegion( m_updateRegion );
3764
3765 // Work around gtk-qt <= 0.60 bug whereby the window colour
3766 // remains grey
3767 if ( UseBgCol() &&
3768 wxSystemOptions::
3769 GetOptionInt("gtk.window.force-background-colour") )
3770 {
3771 dc.SetBackground(GetBackgroundColour());
3772 dc.Clear();
3773 }
3774
3775 wxEraseEvent erase_event( GetId(), &dc );
3776 erase_event.SetEventObject( this );
3777
3778 if ( HandleWindowEvent(erase_event) )
3779 {
3780 // background erased, don't do it again
3781 break;
3782 }
3783 }
3784 // fall through
3785
3786 case wxBG_STYLE_SYSTEM:
3787 if ( GetThemeEnabled() )
3788 {
3789 // find ancestor from which to steal background
3790 wxWindow *parent = wxGetTopLevelParent((wxWindow *)this);
3791 if (!parent)
3792 parent = (wxWindow*)this;
3793
3794 if (gtk_widget_get_mapped(parent->m_widget))
3795 {
3796 wxRegionIterator upd( m_nativeUpdateRegion );
3797 while (upd)
3798 {
3799 GdkRectangle rect;
3800 rect.x = upd.GetX();
3801 rect.y = upd.GetY();
3802 rect.width = upd.GetWidth();
3803 rect.height = upd.GetHeight();
3804
3805 gtk_paint_flat_box(gtk_widget_get_style(parent->m_widget),
3806 GTKGetDrawingWindow(),
3807 gtk_widget_get_state(m_wxwindow),
3808 GTK_SHADOW_NONE,
3809 &rect,
3810 parent->m_widget,
3811 (char *)"base",
3812 0, 0, -1, -1 );
3813
3814 ++upd;
3815 }
3816 }
3817 }
3818 break;
3819
3820 case wxBG_STYLE_PAINT:
3821 // nothing to do: window will be painted over in EVT_PAINT
3822 break;
3823
3824 default:
3825 wxFAIL_MSG( "unsupported background style" );
3826 }
3827
3828 wxNcPaintEvent nc_paint_event( GetId() );
3829 nc_paint_event.SetEventObject( this );
3830 HandleWindowEvent( nc_paint_event );
3831
3832 wxPaintEvent paint_event( GetId() );
3833 paint_event.SetEventObject( this );
3834 HandleWindowEvent( paint_event );
3835
3836 #if wxGTK_HAS_COMPOSITING_SUPPORT
3837 if (IsTransparentBackgroundSupported())
3838 { // now composite children which need it
3839 // Overlay all our composite children on top of the painted area
3840 wxWindowList::compatibility_iterator node;
3841 for ( node = m_children.GetFirst(); node ; node = node->GetNext() )
3842 {
3843 wxWindow *compositeChild = node->GetData();
3844 if (compositeChild->GetBackgroundStyle() == wxBG_STYLE_TRANSPARENT)
3845 {
3846 if (cr == NULL)
3847 {
3848 cr = gdk_cairo_create(m_wxwindow->window);
3849 gdk_cairo_region(cr, m_nativeUpdateRegion.GetRegion());
3850 cairo_clip(cr);
3851 }
3852
3853 GtkWidget *child = compositeChild->m_wxwindow;
3854 GtkAllocation alloc;
3855 gtk_widget_get_allocation(child, &alloc);
3856
3857 // The source data is the (composited) child
3858 gdk_cairo_set_source_window(
3859 cr, gtk_widget_get_window(child), alloc.x, alloc.y);
3860
3861 cairo_paint(cr);
3862 }
3863 }
3864 if (cr)
3865 cairo_destroy(cr);
3866 }
3867 #endif // wxGTK_HAS_COMPOSITING_SUPPORT
3868
3869 m_clipPaintRegion = false;
3870
3871 m_updateRegion.Clear();
3872 m_nativeUpdateRegion.Clear();
3873 }
3874
3875 void wxWindowGTK::SetDoubleBuffered( bool on )
3876 {
3877 wxCHECK_RET( (m_widget != NULL), wxT("invalid window") );
3878
3879 if ( m_wxwindow )
3880 gtk_widget_set_double_buffered( m_wxwindow, on );
3881 }
3882
3883 bool wxWindowGTK::IsDoubleBuffered() const
3884 {
3885 return gtk_widget_get_double_buffered( m_wxwindow );
3886 }
3887
3888 void wxWindowGTK::ClearBackground()
3889 {
3890 wxCHECK_RET( m_widget != NULL, wxT("invalid window") );
3891 }
3892
3893 #if wxUSE_TOOLTIPS
3894 void wxWindowGTK::DoSetToolTip( wxToolTip *tip )
3895 {
3896 if (m_tooltip != tip)
3897 {
3898 wxWindowBase::DoSetToolTip(tip);
3899
3900 if (m_tooltip)
3901 m_tooltip->GTKSetWindow(static_cast<wxWindow*>(this));
3902 else
3903 GTKApplyToolTip(NULL);
3904 }
3905 }
3906
3907 void wxWindowGTK::GTKApplyToolTip(const char* tip)
3908 {
3909 wxToolTip::GTKApply(GetConnectWidget(), tip);
3910 }
3911 #endif // wxUSE_TOOLTIPS
3912
3913 bool wxWindowGTK::SetBackgroundColour( const wxColour &colour )
3914 {
3915 wxCHECK_MSG( m_widget != NULL, false, wxT("invalid window") );
3916
3917 if (!wxWindowBase::SetBackgroundColour(colour))
3918 return false;
3919
3920 if (colour.IsOk())
3921 {
3922 // We need the pixel value e.g. for background clearing.
3923 m_backgroundColour.CalcPixel(gtk_widget_get_colormap(m_widget));
3924 }
3925
3926 // apply style change (forceStyle=true so that new style is applied
3927 // even if the bg colour changed from valid to wxNullColour)
3928 GTKApplyWidgetStyle(true);
3929
3930 return true;
3931 }
3932
3933 bool wxWindowGTK::SetForegroundColour( const wxColour &colour )
3934 {
3935 wxCHECK_MSG( m_widget != NULL, false, wxT("invalid window") );
3936
3937 if (!wxWindowBase::SetForegroundColour(colour))
3938 {
3939 return false;
3940 }
3941
3942 if (colour.IsOk())
3943 {
3944 // We need the pixel value e.g. for background clearing.
3945 m_foregroundColour.CalcPixel(gtk_widget_get_colormap(m_widget));
3946 }
3947
3948 // apply style change (forceStyle=true so that new style is applied
3949 // even if the bg colour changed from valid to wxNullColour):
3950 GTKApplyWidgetStyle(true);
3951
3952 return true;
3953 }
3954
3955 PangoContext *wxWindowGTK::GTKGetPangoDefaultContext()
3956 {
3957 return gtk_widget_get_pango_context( m_widget );
3958 }
3959
3960 GtkRcStyle *wxWindowGTK::GTKCreateWidgetStyle(bool forceStyle)
3961 {
3962 // do we need to apply any changes at all?
3963 if ( !forceStyle &&
3964 !m_font.IsOk() &&
3965 !m_foregroundColour.IsOk() && !m_backgroundColour.IsOk() )
3966 {
3967 return NULL;
3968 }
3969
3970 GtkRcStyle *style = gtk_rc_style_new();
3971
3972 if ( m_font.IsOk() )
3973 {
3974 style->font_desc =
3975 pango_font_description_copy( m_font.GetNativeFontInfo()->description );
3976 }
3977
3978 int flagsNormal = 0,
3979 flagsPrelight = 0,
3980 flagsActive = 0,
3981 flagsInsensitive = 0;
3982
3983 if ( m_foregroundColour.IsOk() )
3984 {
3985 const GdkColor *fg = m_foregroundColour.GetColor();
3986
3987 style->fg[GTK_STATE_NORMAL] =
3988 style->text[GTK_STATE_NORMAL] = *fg;
3989 flagsNormal |= GTK_RC_FG | GTK_RC_TEXT;
3990
3991 style->fg[GTK_STATE_PRELIGHT] =
3992 style->text[GTK_STATE_PRELIGHT] = *fg;
3993 flagsPrelight |= GTK_RC_FG | GTK_RC_TEXT;
3994
3995 style->fg[GTK_STATE_ACTIVE] =
3996 style->text[GTK_STATE_ACTIVE] = *fg;
3997 flagsActive |= GTK_RC_FG | GTK_RC_TEXT;
3998 }
3999
4000 if ( m_backgroundColour.IsOk() )
4001 {
4002 const GdkColor *bg = m_backgroundColour.GetColor();
4003
4004 style->bg[GTK_STATE_NORMAL] =
4005 style->base[GTK_STATE_NORMAL] = *bg;
4006 flagsNormal |= GTK_RC_BG | GTK_RC_BASE;
4007
4008 style->bg[GTK_STATE_PRELIGHT] =
4009 style->base[GTK_STATE_PRELIGHT] = *bg;
4010 flagsPrelight |= GTK_RC_BG | GTK_RC_BASE;
4011
4012 style->bg[GTK_STATE_ACTIVE] =
4013 style->base[GTK_STATE_ACTIVE] = *bg;
4014 flagsActive |= GTK_RC_BG | GTK_RC_BASE;
4015
4016 style->bg[GTK_STATE_INSENSITIVE] =
4017 style->base[GTK_STATE_INSENSITIVE] = *bg;
4018 flagsInsensitive |= GTK_RC_BG | GTK_RC_BASE;
4019 }
4020
4021 style->color_flags[GTK_STATE_NORMAL] = (GtkRcFlags)flagsNormal;
4022 style->color_flags[GTK_STATE_PRELIGHT] = (GtkRcFlags)flagsPrelight;
4023 style->color_flags[GTK_STATE_ACTIVE] = (GtkRcFlags)flagsActive;
4024 style->color_flags[GTK_STATE_INSENSITIVE] = (GtkRcFlags)flagsInsensitive;
4025
4026 return style;
4027 }
4028
4029 void wxWindowGTK::GTKApplyWidgetStyle(bool forceStyle)
4030 {
4031 GtkRcStyle *style = GTKCreateWidgetStyle(forceStyle);
4032 if ( style )
4033 {
4034 DoApplyWidgetStyle(style);
4035 g_object_unref(style);
4036 }
4037
4038 // Style change may affect GTK+'s size calculation:
4039 InvalidateBestSize();
4040 }
4041
4042 void wxWindowGTK::DoApplyWidgetStyle(GtkRcStyle *style)
4043 {
4044 if ( m_wxwindow )
4045 {
4046 // block the signal temporarily to avoid sending
4047 // wxSysColourChangedEvents when we change the colours ourselves
4048 bool unblock = false;
4049 if ( IsTopLevel() )
4050 {
4051 unblock = true;
4052 g_signal_handlers_block_by_func(
4053 m_wxwindow, (void *)gtk_window_style_set_callback, this);
4054 }
4055
4056 gtk_widget_modify_style(m_wxwindow, style);
4057
4058 if ( unblock )
4059 {
4060 g_signal_handlers_unblock_by_func(
4061 m_wxwindow, (void *)gtk_window_style_set_callback, this);
4062 }
4063 }
4064 else
4065 {
4066 gtk_widget_modify_style(m_widget, style);
4067 }
4068 }
4069
4070 bool wxWindowGTK::SetBackgroundStyle(wxBackgroundStyle style)
4071 {
4072 if (!wxWindowBase::SetBackgroundStyle(style))
4073 return false;
4074
4075 GdkWindow *window;
4076 if ( m_wxwindow )
4077 {
4078 window = GTKGetDrawingWindow();
4079 }
4080 else
4081 {
4082 GtkWidget * const w = GetConnectWidget();
4083 window = w ? gtk_widget_get_window(w) : NULL;
4084 }
4085
4086 bool wantNoBackPixmap = style == wxBG_STYLE_PAINT || style == wxBG_STYLE_TRANSPARENT;
4087
4088 if ( wantNoBackPixmap )
4089 {
4090 if (window)
4091 {
4092 // Make sure GDK/X11 doesn't refresh the window
4093 // automatically.
4094 gdk_window_set_back_pixmap( window, NULL, FALSE );
4095 m_needsStyleChange = false;
4096 }
4097 else // window not realized yet
4098 {
4099 // Do when window is realized
4100 m_needsStyleChange = true;
4101 }
4102
4103 // Don't apply widget style, or we get a grey background
4104 }
4105 else
4106 {
4107 // apply style change (forceStyle=true so that new style is applied
4108 // even if the bg colour changed from valid to wxNullColour):
4109 GTKApplyWidgetStyle(true);
4110 }
4111
4112 return true;
4113 }
4114
4115 bool wxWindowGTK::IsTransparentBackgroundSupported(wxString* reason) const
4116 {
4117 #if wxGTK_HAS_COMPOSITING_SUPPORT
4118 if (gtk_check_version(wxGTK_VERSION_REQUIRED_FOR_COMPOSITING) != NULL)
4119 {
4120 if (reason)
4121 {
4122 *reason = _("GTK+ installed on this machine is too old to "
4123 "support screen compositing, please install "
4124 "GTK+ 2.12 or later.");
4125 }
4126
4127 return false;
4128 }
4129
4130 // NB: We don't check here if the particular kind of widget supports
4131 // transparency, we check only if it would be possible for a generic window
4132
4133 wxCHECK_MSG ( m_widget, false, "Window must be created first" );
4134
4135 if (!gdk_screen_is_composited(gtk_widget_get_screen(m_widget)))
4136 {
4137 if (reason)
4138 {
4139 *reason = _("Compositing not supported by this system, "
4140 "please enable it in your Window Manager.");
4141 }
4142
4143 return false;
4144 }
4145
4146 return true;
4147 #else
4148 if (reason)
4149 {
4150 *reason = _("This program was compiled with a too old version of GTK+, "
4151 "please rebuild with GTK+ 2.12 or newer.");
4152 }
4153 #endif // wxGTK_HAS_COMPOSITING_SUPPORT/!wxGTK_HAS_COMPOSITING_SUPPORT
4154
4155 return false;
4156 }
4157
4158 // ----------------------------------------------------------------------------
4159 // Pop-up menu stuff
4160 // ----------------------------------------------------------------------------
4161
4162 #if wxUSE_MENUS_NATIVE
4163
4164 extern "C" {
4165 static
4166 void wxPopupMenuPositionCallback( GtkMenu *menu,
4167 gint *x, gint *y,
4168 gboolean * WXUNUSED(whatever),
4169 gpointer user_data )
4170 {
4171 // ensure that the menu appears entirely on screen
4172 GtkRequisition req;
4173 gtk_widget_get_child_requisition(GTK_WIDGET(menu), &req);
4174
4175 wxSize sizeScreen = wxGetDisplaySize();
4176 wxPoint *pos = (wxPoint*)user_data;
4177
4178 gint xmax = sizeScreen.x - req.width,
4179 ymax = sizeScreen.y - req.height;
4180
4181 *x = pos->x < xmax ? pos->x : xmax;
4182 *y = pos->y < ymax ? pos->y : ymax;
4183 }
4184 }
4185
4186 bool wxWindowGTK::DoPopupMenu( wxMenu *menu, int x, int y )
4187 {
4188 wxCHECK_MSG( m_widget != NULL, false, wxT("invalid window") );
4189
4190 // For compatibility with other ports, pretend that the window showing the
4191 // menu has focus while the menu is shown. This is needed because the popup
4192 // menu actually steals the focus from the window it's associated it in
4193 // wxGTK unlike, say, wxMSW.
4194 wxWindowGTK* const oldPendingFocus = gs_pendingFocus;
4195 gs_pendingFocus = this;
4196 wxON_BLOCK_EXIT_SET( gs_pendingFocus, oldPendingFocus );
4197
4198 menu->UpdateUI();
4199
4200 wxPoint pos;
4201 gpointer userdata;
4202 GtkMenuPositionFunc posfunc;
4203 if ( x == -1 && y == -1 )
4204 {
4205 // use GTK's default positioning algorithm
4206 userdata = NULL;
4207 posfunc = NULL;
4208 }
4209 else
4210 {
4211 pos = ClientToScreen(wxPoint(x, y));
4212 userdata = &pos;
4213 posfunc = wxPopupMenuPositionCallback;
4214 }
4215
4216 menu->m_popupShown = true;
4217 gtk_menu_popup(
4218 GTK_MENU(menu->m_menu),
4219 NULL, // parent menu shell
4220 NULL, // parent menu item
4221 posfunc, // function to position it
4222 userdata, // client data
4223 0, // button used to activate it
4224 gtk_get_current_event_time()
4225 );
4226
4227 while (menu->m_popupShown)
4228 {
4229 gtk_main_iteration();
4230 }
4231
4232 return true;
4233 }
4234
4235 #endif // wxUSE_MENUS_NATIVE
4236
4237 #if wxUSE_DRAG_AND_DROP
4238
4239 void wxWindowGTK::SetDropTarget( wxDropTarget *dropTarget )
4240 {
4241 wxCHECK_RET( m_widget != NULL, wxT("invalid window") );
4242
4243 GtkWidget *dnd_widget = GetConnectWidget();
4244
4245 if (m_dropTarget) m_dropTarget->GtkUnregisterWidget( dnd_widget );
4246
4247 if (m_dropTarget) delete m_dropTarget;
4248 m_dropTarget = dropTarget;
4249
4250 if (m_dropTarget) m_dropTarget->GtkRegisterWidget( dnd_widget );
4251 }
4252
4253 #endif // wxUSE_DRAG_AND_DROP
4254
4255 GtkWidget* wxWindowGTK::GetConnectWidget()
4256 {
4257 GtkWidget *connect_widget = m_widget;
4258 if (m_wxwindow) connect_widget = m_wxwindow;
4259
4260 return connect_widget;
4261 }
4262
4263 bool wxWindowGTK::GTKIsOwnWindow(GdkWindow *window) const
4264 {
4265 wxArrayGdkWindows windowsThis;
4266 GdkWindow * const winThis = GTKGetWindow(windowsThis);
4267
4268 return winThis ? window == winThis
4269 : windowsThis.Index(window) != wxNOT_FOUND;
4270 }
4271
4272 GdkWindow *wxWindowGTK::GTKGetWindow(wxArrayGdkWindows& WXUNUSED(windows)) const
4273 {
4274 return m_wxwindow ? GTKGetDrawingWindow() : gtk_widget_get_window(m_widget);
4275 }
4276
4277 bool wxWindowGTK::SetFont( const wxFont &font )
4278 {
4279 wxCHECK_MSG( m_widget != NULL, false, wxT("invalid window") );
4280
4281 if (!wxWindowBase::SetFont(font))
4282 return false;
4283
4284 // apply style change (forceStyle=true so that new style is applied
4285 // even if the font changed from valid to wxNullFont):
4286 GTKApplyWidgetStyle(true);
4287
4288 return true;
4289 }
4290
4291 void wxWindowGTK::DoCaptureMouse()
4292 {
4293 wxCHECK_RET( m_widget != NULL, wxT("invalid window") );
4294
4295 GdkWindow *window = NULL;
4296 if (m_wxwindow)
4297 window = GTKGetDrawingWindow();
4298 else
4299 window = gtk_widget_get_window(GetConnectWidget());
4300
4301 wxCHECK_RET( window, wxT("CaptureMouse() failed") );
4302
4303 const wxCursor* cursor = &m_cursor;
4304 if (!cursor->IsOk())
4305 cursor = wxSTANDARD_CURSOR;
4306
4307 gdk_pointer_grab( window, FALSE,
4308 (GdkEventMask)
4309 (GDK_BUTTON_PRESS_MASK |
4310 GDK_BUTTON_RELEASE_MASK |
4311 GDK_POINTER_MOTION_HINT_MASK |
4312 GDK_POINTER_MOTION_MASK),
4313 NULL,
4314 cursor->GetCursor(),
4315 (guint32)GDK_CURRENT_TIME );
4316 g_captureWindow = this;
4317 g_captureWindowHasMouse = true;
4318 }
4319
4320 void wxWindowGTK::DoReleaseMouse()
4321 {
4322 wxCHECK_RET( m_widget != NULL, wxT("invalid window") );
4323
4324 wxCHECK_RET( g_captureWindow, wxT("can't release mouse - not captured") );
4325
4326 g_captureWindow = NULL;
4327
4328 GdkWindow *window = NULL;
4329 if (m_wxwindow)
4330 window = GTKGetDrawingWindow();
4331 else
4332 window = gtk_widget_get_window(GetConnectWidget());
4333
4334 if (!window)
4335 return;
4336
4337 gdk_pointer_ungrab ( (guint32)GDK_CURRENT_TIME );
4338 }
4339
4340 void wxWindowGTK::GTKReleaseMouseAndNotify()
4341 {
4342 DoReleaseMouse();
4343 wxMouseCaptureLostEvent evt(GetId());
4344 evt.SetEventObject( this );
4345 HandleWindowEvent( evt );
4346 }
4347
4348 /* static */
4349 wxWindow *wxWindowBase::GetCapture()
4350 {
4351 return (wxWindow *)g_captureWindow;
4352 }
4353
4354 bool wxWindowGTK::IsRetained() const
4355 {
4356 return false;
4357 }
4358
4359 void wxWindowGTK::SetScrollbar(int orient,
4360 int pos,
4361 int thumbVisible,
4362 int range,
4363 bool WXUNUSED(update))
4364 {
4365 const int dir = ScrollDirFromOrient(orient);
4366 GtkRange* const sb = m_scrollBar[dir];
4367 wxCHECK_RET( sb, wxT("this window is not scrollable") );
4368
4369 if (range <= 0)
4370 {
4371 // GtkRange requires upper > lower
4372 range =
4373 thumbVisible = 1;
4374 }
4375
4376 g_signal_handlers_block_by_func(
4377 sb, (void*)gtk_scrollbar_value_changed, this);
4378
4379 gtk_range_set_increments(sb, 1, thumbVisible);
4380 gtk_adjustment_set_page_size(gtk_range_get_adjustment(sb), thumbVisible);
4381 gtk_range_set_range(sb, 0, range);
4382 gtk_range_set_value(sb, pos);
4383 m_scrollPos[dir] = gtk_range_get_value(sb);
4384
4385 g_signal_handlers_unblock_by_func(
4386 sb, (void*)gtk_scrollbar_value_changed, this);
4387 }
4388
4389 void wxWindowGTK::SetScrollPos(int orient, int pos, bool WXUNUSED(refresh))
4390 {
4391 const int dir = ScrollDirFromOrient(orient);
4392 GtkRange * const sb = m_scrollBar[dir];
4393 wxCHECK_RET( sb, wxT("this window is not scrollable") );
4394
4395 // This check is more than an optimization. Without it, the slider
4396 // will not move smoothly while tracking when using wxScrollHelper.
4397 if (GetScrollPos(orient) != pos)
4398 {
4399 g_signal_handlers_block_by_func(
4400 sb, (void*)gtk_scrollbar_value_changed, this);
4401
4402 gtk_range_set_value(sb, pos);
4403 m_scrollPos[dir] = gtk_range_get_value(sb);
4404
4405 g_signal_handlers_unblock_by_func(
4406 sb, (void*)gtk_scrollbar_value_changed, this);
4407 }
4408 }
4409
4410 int wxWindowGTK::GetScrollThumb(int orient) const
4411 {
4412 GtkRange * const sb = m_scrollBar[ScrollDirFromOrient(orient)];
4413 wxCHECK_MSG( sb, 0, wxT("this window is not scrollable") );
4414
4415 return wxRound(gtk_adjustment_get_page_size(gtk_range_get_adjustment(sb)));
4416 }
4417
4418 int wxWindowGTK::GetScrollPos( int orient ) const
4419 {
4420 GtkRange * const sb = m_scrollBar[ScrollDirFromOrient(orient)];
4421 wxCHECK_MSG( sb, 0, wxT("this window is not scrollable") );
4422
4423 return wxRound(gtk_range_get_value(sb));
4424 }
4425
4426 int wxWindowGTK::GetScrollRange( int orient ) const
4427 {
4428 GtkRange * const sb = m_scrollBar[ScrollDirFromOrient(orient)];
4429 wxCHECK_MSG( sb, 0, wxT("this window is not scrollable") );
4430
4431 return wxRound(gtk_adjustment_get_upper(gtk_range_get_adjustment(sb)));
4432 }
4433
4434 // Determine if increment is the same as +/-x, allowing for some small
4435 // difference due to possible inexactness in floating point arithmetic
4436 static inline bool IsScrollIncrement(double increment, double x)
4437 {
4438 wxASSERT(increment > 0);
4439 const double tolerance = 1.0 / 1024;
4440 return fabs(increment - fabs(x)) < tolerance;
4441 }
4442
4443 wxEventType wxWindowGTK::GTKGetScrollEventType(GtkRange* range)
4444 {
4445 wxASSERT(range == m_scrollBar[0] || range == m_scrollBar[1]);
4446
4447 const int barIndex = range == m_scrollBar[1];
4448
4449 const double value = gtk_range_get_value(range);
4450
4451 // save previous position
4452 const double oldPos = m_scrollPos[barIndex];
4453 // update current position
4454 m_scrollPos[barIndex] = value;
4455 // If event should be ignored, or integral position has not changed
4456 if (!m_hasVMT || g_blockEventsOnDrag || wxRound(value) == wxRound(oldPos))
4457 {
4458 return wxEVT_NULL;
4459 }
4460
4461 wxEventType eventType = wxEVT_SCROLL_THUMBTRACK;
4462 if (!m_isScrolling)
4463 {
4464 // Difference from last change event
4465 const double diff = value - oldPos;
4466 const bool isDown = diff > 0;
4467
4468 GtkAdjustment* adj = gtk_range_get_adjustment(range);
4469 if (IsScrollIncrement(gtk_adjustment_get_step_increment(adj), diff))
4470 {
4471 eventType = isDown ? wxEVT_SCROLL_LINEDOWN : wxEVT_SCROLL_LINEUP;
4472 }
4473 else if (IsScrollIncrement(gtk_adjustment_get_page_increment(adj), diff))
4474 {
4475 eventType = isDown ? wxEVT_SCROLL_PAGEDOWN : wxEVT_SCROLL_PAGEUP;
4476 }
4477 else if (m_mouseButtonDown)
4478 {
4479 // Assume track event
4480 m_isScrolling = true;
4481 }
4482 }
4483 return eventType;
4484 }
4485
4486 void wxWindowGTK::ScrollWindow( int dx, int dy, const wxRect* WXUNUSED(rect) )
4487 {
4488 wxCHECK_RET( m_widget != NULL, wxT("invalid window") );
4489
4490 wxCHECK_RET( m_wxwindow != NULL, wxT("window needs client area for scrolling") );
4491
4492 // No scrolling requested.
4493 if ((dx == 0) && (dy == 0)) return;
4494
4495 m_clipPaintRegion = true;
4496
4497 WX_PIZZA(m_wxwindow)->scroll(dx, dy);
4498
4499 m_clipPaintRegion = false;
4500
4501 #if wxUSE_CARET
4502 bool restoreCaret = (GetCaret() != NULL && GetCaret()->IsVisible());
4503 if (restoreCaret)
4504 {
4505 wxRect caretRect(GetCaret()->GetPosition(), GetCaret()->GetSize());
4506 if (dx > 0)
4507 caretRect.width += dx;
4508 else
4509 {
4510 caretRect.x += dx; caretRect.width -= dx;
4511 }
4512 if (dy > 0)
4513 caretRect.height += dy;
4514 else
4515 {
4516 caretRect.y += dy; caretRect.height -= dy;
4517 }
4518
4519 RefreshRect(caretRect);
4520 }
4521 #endif // wxUSE_CARET
4522 }
4523
4524 void wxWindowGTK::GTKScrolledWindowSetBorder(GtkWidget* w, int wxstyle)
4525 {
4526 //RN: Note that static controls usually have no border on gtk, so maybe
4527 //it makes sense to treat that as simply no border at the wx level
4528 //as well...
4529 if (!(wxstyle & wxNO_BORDER) && !(wxstyle & wxBORDER_STATIC))
4530 {
4531 GtkShadowType gtkstyle;
4532
4533 if(wxstyle & wxBORDER_RAISED)
4534 gtkstyle = GTK_SHADOW_OUT;
4535 else if ((wxstyle & wxBORDER_SUNKEN) || (wxstyle & wxBORDER_THEME))
4536 gtkstyle = GTK_SHADOW_IN;
4537 #if 0
4538 // Now obsolete
4539 else if (wxstyle & wxBORDER_DOUBLE)
4540 gtkstyle = GTK_SHADOW_ETCHED_IN;
4541 #endif
4542 else //default
4543 gtkstyle = GTK_SHADOW_IN;
4544
4545 gtk_scrolled_window_set_shadow_type( GTK_SCROLLED_WINDOW(w),
4546 gtkstyle );
4547 }
4548 }
4549
4550 // Find the wxWindow at the current mouse position, also returning the mouse
4551 // position.
4552 wxWindow* wxFindWindowAtPointer(wxPoint& pt)
4553 {
4554 pt = wxGetMousePosition();
4555 wxWindow* found = wxFindWindowAtPoint(pt);
4556 return found;
4557 }
4558
4559 // Get the current mouse position.
4560 wxPoint wxGetMousePosition()
4561 {
4562 wxWindow* tlw = NULL;
4563 if (!wxTopLevelWindows.empty())
4564 tlw = wxTopLevelWindows.front();
4565 GdkDisplay* display;
4566 if (tlw && tlw->m_widget)
4567 display = gtk_widget_get_display(tlw->m_widget);
4568 else
4569 display = gdk_display_get_default();
4570
4571 int x, y;
4572 gdk_display_get_pointer(display, NULL, &x, &y, NULL);
4573 return wxPoint(x, y);
4574 }
4575
4576 GdkWindow* wxWindowGTK::GTKGetDrawingWindow() const
4577 {
4578 GdkWindow* window = NULL;
4579 if (m_wxwindow)
4580 window = gtk_widget_get_window(m_wxwindow);
4581 return window;
4582 }
4583
4584 // ----------------------------------------------------------------------------
4585 // freeze/thaw
4586 // ----------------------------------------------------------------------------
4587
4588 extern "C"
4589 {
4590
4591 // this is called if we attempted to freeze unrealized widget when it finally
4592 // is realized (and so can be frozen):
4593 static void wx_frozen_widget_realize(GtkWidget* w, wxWindowGTK* win)
4594 {
4595 wxASSERT( w && gtk_widget_get_has_window(w) );
4596 wxASSERT( gtk_widget_get_realized(w) );
4597
4598 g_signal_handlers_disconnect_by_func
4599 (
4600 w,
4601 (void*)wx_frozen_widget_realize,
4602 win
4603 );
4604
4605 GdkWindow* window;
4606 if (w == win->m_wxwindow)
4607 window = win->GTKGetDrawingWindow();
4608 else
4609 window = gtk_widget_get_window(w);
4610 gdk_window_freeze_updates(window);
4611 }
4612
4613 } // extern "C"
4614
4615 void wxWindowGTK::GTKFreezeWidget(GtkWidget *w)
4616 {
4617 if ( !w || !gtk_widget_get_has_window(w) )
4618 return; // window-less widget, cannot be frozen
4619
4620 GdkWindow* window = gtk_widget_get_window(w);
4621 if (window == NULL)
4622 {
4623 // we can't thaw unrealized widgets because they don't have GdkWindow,
4624 // so set it up to be done immediately after realization:
4625 g_signal_connect_after
4626 (
4627 w,
4628 "realize",
4629 G_CALLBACK(wx_frozen_widget_realize),
4630 this
4631 );
4632 return;
4633 }
4634
4635 if (w == m_wxwindow)
4636 window = GTKGetDrawingWindow();
4637 gdk_window_freeze_updates(window);
4638 }
4639
4640 void wxWindowGTK::GTKThawWidget(GtkWidget *w)
4641 {
4642 if ( !w || !gtk_widget_get_has_window(w) )
4643 return; // window-less widget, cannot be frozen
4644
4645 GdkWindow* window = gtk_widget_get_window(w);
4646 if (window == NULL)
4647 {
4648 // the widget wasn't realized yet, no need to thaw
4649 g_signal_handlers_disconnect_by_func
4650 (
4651 w,
4652 (void*)wx_frozen_widget_realize,
4653 this
4654 );
4655 return;
4656 }
4657
4658 if (w == m_wxwindow)
4659 window = GTKGetDrawingWindow();
4660 gdk_window_thaw_updates(window);
4661 }
4662
4663 void wxWindowGTK::DoFreeze()
4664 {
4665 GTKFreezeWidget(m_widget);
4666 if ( m_wxwindow && m_widget != m_wxwindow )
4667 GTKFreezeWidget(m_wxwindow);
4668 }
4669
4670 void wxWindowGTK::DoThaw()
4671 {
4672 GTKThawWidget(m_widget);
4673 if ( m_wxwindow && m_widget != m_wxwindow )
4674 GTKThawWidget(m_wxwindow);
4675 }
wxWidgets (Impactor)