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[wxWidgets.git] / src / gtk / win_gtk.c
1 /* ///////////////////////////////////////////////////////////////////////////
2 // Name: src/gtk/win_gtk.c
3 // Purpose: Native GTK+ widget for wxWidgets, based on GtkLayout and
4 // GtkFixed. It makes use of the gravity window property and
5 // therefore does not work with GTK 1.0.
6 // Author: Robert Roebling
7 // Id: $Id$
8 // Copyright: (c) 1998 Robert Roebling
9 // Licence: wxWidgets licence
10 /////////////////////////////////////////////////////////////////////////// */
11
12 #ifdef VMS
13 #define XCheckIfEvent XCHECKIFEVENT
14 #endif
15
16 #include "wx/platform.h"
17 #include "wx/gtk/win_gtk.h"
18
19 #ifdef __cplusplus
20 extern "C" {
21 #endif /* __cplusplus */
22
23 typedef struct _GtkPizzaAdjData GtkPizzaAdjData;
24
25 struct _GtkPizzaAdjData
26 {
27 gint dx;
28 gint dy;
29 };
30
31 static void gtk_pizza_class_init (GtkPizzaClass *klass);
32 static void gtk_pizza_init (GtkPizza *pizza);
33
34 static void gtk_pizza_realize (GtkWidget *widget);
35 static void gtk_pizza_unrealize (GtkWidget *widget);
36
37 static void gtk_pizza_map (GtkWidget *widget);
38
39 static void gtk_pizza_size_request (GtkWidget *widget,
40 GtkRequisition *requisition);
41 static void gtk_pizza_size_allocate (GtkWidget *widget,
42 GtkAllocation *allocation);
43 static gint gtk_pizza_expose (GtkWidget *widget,
44 GdkEventExpose *event);
45 static void gtk_pizza_style_set (GtkWidget *widget,
46 GtkStyle *previous_style);
47 static void gtk_pizza_add (GtkContainer *container,
48 GtkWidget *widget);
49 static void gtk_pizza_remove (GtkContainer *container,
50 GtkWidget *widget);
51 static void gtk_pizza_forall (GtkContainer *container,
52 gboolean include_internals,
53 GtkCallback callback,
54 gpointer callback_data);
55
56 static void gtk_pizza_allocate_child (GtkPizza *pizza,
57 GtkPizzaChild *child);
58 static void gtk_pizza_adjust_allocations_recurse (GtkWidget *widget,
59 gpointer cb_data);
60
61 static GtkType gtk_pizza_child_type (GtkContainer *container);
62
63 static void gtk_pizza_scroll_set_adjustments (GtkPizza *pizza,
64 GtkAdjustment *hadj,
65 GtkAdjustment *vadj);
66
67 /* static */
68 GtkContainerClass *pizza_parent_class = NULL;
69
70 GtkType
71 gtk_pizza_get_type ()
72 {
73 static GtkType pizza_type = 0;
74
75 if (!pizza_type)
76 {
77 static const GTypeInfo pizza_info =
78 {
79 sizeof (GtkPizzaClass),
80 NULL, /* base_init */
81 NULL, /* base_finalize */
82 (GClassInitFunc) gtk_pizza_class_init,
83 NULL, /* class_finalize */
84 NULL, /* class_data */
85 sizeof (GtkPizza),
86 16, /* n_preallocs */
87 (GInstanceInitFunc) gtk_pizza_init,
88 };
89 pizza_type = g_type_register_static (GTK_TYPE_CONTAINER, "GtkPizza", &pizza_info, (GTypeFlags)0);
90 }
91
92 return pizza_type;
93 }
94
95 /* Marshaller needed for set_scroll_adjustments signal,
96 generated with GLib-2.4.6 glib-genmarshal */
97 #define g_marshal_value_peek_object(v) g_value_get_object (v)
98 static void
99 g_cclosure_user_marshal_VOID__OBJECT_OBJECT (GClosure *closure,
100 GValue *return_value,
101 guint n_param_values,
102 const GValue *param_values,
103 gpointer invocation_hint,
104 gpointer marshal_data)
105 {
106 typedef void (*GMarshalFunc_VOID__OBJECT_OBJECT) (gpointer data1,
107 gpointer arg_1,
108 gpointer arg_2,
109 gpointer data2);
110 register GMarshalFunc_VOID__OBJECT_OBJECT callback;
111 register GCClosure *cc = (GCClosure*) closure;
112 register gpointer data1, data2;
113
114 g_return_if_fail (n_param_values == 3);
115
116 if (G_CCLOSURE_SWAP_DATA (closure))
117 {
118 data1 = closure->data;
119 data2 = g_value_peek_pointer (param_values + 0);
120 }
121 else
122 {
123 data1 = g_value_peek_pointer (param_values + 0);
124 data2 = closure->data;
125 }
126 callback = (GMarshalFunc_VOID__OBJECT_OBJECT) (marshal_data ? marshal_data : cc->callback);
127
128 callback (data1,
129 g_marshal_value_peek_object (param_values + 1),
130 g_marshal_value_peek_object (param_values + 2),
131 data2);
132 }
133
134 static void
135 gtk_pizza_class_init (GtkPizzaClass *klass)
136 {
137 GtkObjectClass *object_class;
138 GtkWidgetClass *widget_class;
139 GtkContainerClass *container_class;
140
141 object_class = (GtkObjectClass*) klass;
142 widget_class = (GtkWidgetClass*) klass;
143 container_class = (GtkContainerClass*) klass;
144 pizza_parent_class = gtk_type_class (GTK_TYPE_CONTAINER);
145
146 widget_class->map = gtk_pizza_map;
147 widget_class->realize = gtk_pizza_realize;
148 widget_class->unrealize = gtk_pizza_unrealize;
149 widget_class->size_request = gtk_pizza_size_request;
150 widget_class->size_allocate = gtk_pizza_size_allocate;
151 widget_class->expose_event = gtk_pizza_expose;
152 widget_class->style_set = gtk_pizza_style_set;
153
154 container_class->add = gtk_pizza_add;
155 container_class->remove = gtk_pizza_remove;
156 container_class->forall = gtk_pizza_forall;
157
158 container_class->child_type = gtk_pizza_child_type;
159
160 klass->set_scroll_adjustments = gtk_pizza_scroll_set_adjustments;
161
162 widget_class->set_scroll_adjustments_signal =
163 g_signal_new(
164 "set_scroll_adjustments",
165 G_TYPE_FROM_CLASS(object_class),
166 G_SIGNAL_RUN_LAST,
167 G_STRUCT_OFFSET(GtkPizzaClass, set_scroll_adjustments),
168 NULL,
169 NULL,
170 g_cclosure_user_marshal_VOID__OBJECT_OBJECT,
171 G_TYPE_NONE,
172 2,
173 GTK_TYPE_ADJUSTMENT,
174 GTK_TYPE_ADJUSTMENT);
175 }
176
177 static GtkType
178 gtk_pizza_child_type (GtkContainer *container)
179 {
180 return GTK_TYPE_WIDGET;
181 }
182
183 static void
184 gtk_pizza_init (GtkPizza *pizza)
185 {
186 GTK_WIDGET_UNSET_FLAGS (pizza, GTK_NO_WINDOW);
187
188 pizza->shadow_type = GTK_MYSHADOW_NONE;
189
190 pizza->children = NULL;
191
192 pizza->width = 20;
193 pizza->height = 20;
194
195 pizza->bin_window = NULL;
196
197 pizza->xoffset = 0;
198 pizza->yoffset = 0;
199
200 pizza->external_expose = FALSE;
201 }
202
203 GtkWidget*
204 gtk_pizza_new ()
205 {
206 GtkPizza *pizza;
207
208 pizza = g_object_new (gtk_pizza_get_type (), NULL);
209
210 return GTK_WIDGET (pizza);
211 }
212
213 static void
214 gtk_pizza_scroll_set_adjustments (GtkPizza *pizza,
215 GtkAdjustment *hadj,
216 GtkAdjustment *vadj)
217 {
218 /* We handle scrolling in the wxScrolledWindow, not here. */
219 }
220
221 void
222 gtk_pizza_set_shadow_type (GtkPizza *pizza,
223 GtkMyShadowType type)
224 {
225 g_return_if_fail (pizza != NULL);
226 g_return_if_fail (GTK_IS_PIZZA (pizza));
227
228 if (pizza->shadow_type != type)
229 {
230 pizza->shadow_type = type;
231
232 if (GTK_WIDGET_VISIBLE (pizza))
233 {
234 gtk_widget_size_allocate (GTK_WIDGET (pizza), &(GTK_WIDGET (pizza)->allocation));
235 gtk_widget_queue_draw (GTK_WIDGET (pizza));
236 }
237 }
238 }
239
240 void
241 gtk_pizza_set_external (GtkPizza *pizza,
242 gboolean expose)
243 {
244 g_return_if_fail (pizza != NULL);
245 g_return_if_fail (GTK_IS_PIZZA (pizza));
246
247 pizza->external_expose = expose;
248 }
249
250 void
251 gtk_pizza_put (GtkPizza *pizza,
252 GtkWidget *widget,
253 gint x,
254 gint y,
255 gint width,
256 gint height)
257 {
258 GtkPizzaChild *child_info;
259
260 g_return_if_fail (pizza != NULL);
261 g_return_if_fail (GTK_IS_PIZZA (pizza));
262 g_return_if_fail (widget != NULL);
263
264 child_info = g_new (GtkPizzaChild, 1);
265
266 child_info->widget = widget;
267 child_info->x = x;
268 child_info->y = y;
269 child_info->width = width;
270 child_info->height = height;
271
272 pizza->children = g_list_append (pizza->children, child_info);
273
274 if (GTK_WIDGET_REALIZED (pizza))
275 gtk_widget_set_parent_window (widget, pizza->bin_window);
276
277 gtk_widget_set_parent (widget, GTK_WIDGET (pizza));
278
279 gtk_widget_set_size_request (widget, width, height);
280 }
281
282 void
283 gtk_pizza_set_size (GtkPizza *pizza,
284 GtkWidget *widget,
285 gint x,
286 gint y,
287 gint width,
288 gint height)
289 {
290 GtkPizzaChild *child;
291 GList *children;
292
293 g_return_if_fail (pizza != NULL);
294 g_return_if_fail (GTK_IS_PIZZA (pizza));
295 g_return_if_fail (widget != NULL);
296
297 #ifndef WX_WARN_ILLEGAL_SETSIZE
298 /* this really shouldn't happen -- but it does, a lot, right now and we
299 can't pass negative values to gtk_widget_set_size_request() without getting
300 a warning printed out, so filter them out here */
301 if ( width < 0 )
302 width = 0;
303 if ( height < 0 )
304 height = 0;
305 #endif
306
307 children = pizza->children;
308 while (children)
309 {
310 child = children->data;
311 children = children->next;
312
313 if (child->widget == widget)
314 {
315 if ((child->x == x) &&
316 (child->y == y) &&
317 (child->width == width) &&
318 (child->height == height)) return;
319
320 child->x = x;
321 child->y = y;
322 child->width = width;
323 child->height = height;
324
325 gtk_widget_set_size_request (widget, width, height);
326
327 return;
328 }
329 }
330 }
331
332 static void
333 gtk_pizza_map (GtkWidget *widget)
334 {
335 GtkPizza *pizza;
336 GtkPizzaChild *child;
337 GList *children;
338
339 g_return_if_fail (widget != NULL);
340 g_return_if_fail (GTK_IS_PIZZA (widget));
341
342 GTK_WIDGET_SET_FLAGS (widget, GTK_MAPPED);
343 pizza = GTK_PIZZA (widget);
344
345 children = pizza->children;
346 while (children)
347 {
348 child = children->data;
349 children = children->next;
350
351 if ( GTK_WIDGET_VISIBLE (child->widget) &&
352 !GTK_WIDGET_MAPPED (child->widget) )
353 {
354 gtk_widget_map (child->widget);
355 }
356 }
357
358 gdk_window_show (widget->window);
359 gdk_window_show (pizza->bin_window);
360 }
361
362 static void
363 gtk_pizza_realize (GtkWidget *widget)
364 {
365 GtkPizza *pizza;
366 GdkWindowAttr attributes;
367 gint attributes_mask;
368 GtkPizzaChild *child;
369 GList *children;
370
371 g_return_if_fail (widget != NULL);
372 g_return_if_fail (GTK_IS_PIZZA (widget));
373
374 pizza = GTK_PIZZA (widget);
375 GTK_WIDGET_SET_FLAGS (widget, GTK_REALIZED);
376
377 attributes.window_type = GDK_WINDOW_CHILD;
378
379 attributes.x = widget->allocation.x;
380 attributes.y = widget->allocation.y;
381 attributes.width = widget->allocation.width;
382 attributes.height = widget->allocation.height;
383
384 #ifndef __WXUNIVERSAL__
385 if (pizza->shadow_type == GTK_MYSHADOW_NONE)
386 {
387 /* no border, no changes to sizes */
388 }
389 else if (pizza->shadow_type == GTK_MYSHADOW_THIN)
390 {
391 /* GTK_MYSHADOW_THIN == wxSIMPLE_BORDER */
392 attributes.x += 1;
393 attributes.y += 1;
394 attributes.width -= 2;
395 attributes.height -= 2;
396 }
397 else
398 {
399 /* GTK_MYSHADOW_IN == wxSUNKEN_BORDER */
400 /* GTK_MYSHADOW_OUT == wxRAISED_BORDER */
401 attributes.x += 2;
402 attributes.y += 2;
403 attributes.width -= 4;
404 attributes.height -= 4;
405 }
406 #endif /* __WXUNIVERSAL__ */
407
408 /* minimal size */
409 if (attributes.width < 2) attributes.width = 2;
410 if (attributes.height < 2) attributes.height = 2;
411
412 attributes.wclass = GDK_INPUT_OUTPUT;
413 attributes.visual = gtk_widget_get_visual (widget);
414 attributes.colormap = gtk_widget_get_colormap (widget);
415 attributes.event_mask = GDK_VISIBILITY_NOTIFY_MASK;
416 attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL | GDK_WA_COLORMAP;
417
418 widget->window = gdk_window_new(gtk_widget_get_parent_window (widget),
419 &attributes, attributes_mask);
420 gdk_window_set_user_data (widget->window, widget);
421
422 attributes.x = 0;
423 attributes.y = 0;
424
425 attributes.event_mask = gtk_widget_get_events (widget);
426 attributes.event_mask |= GDK_EXPOSURE_MASK |
427 GDK_SCROLL_MASK |
428 GDK_POINTER_MOTION_MASK |
429 GDK_POINTER_MOTION_HINT_MASK |
430 GDK_BUTTON_MOTION_MASK |
431 GDK_BUTTON1_MOTION_MASK |
432 GDK_BUTTON2_MOTION_MASK |
433 GDK_BUTTON3_MOTION_MASK |
434 GDK_BUTTON_PRESS_MASK |
435 GDK_BUTTON_RELEASE_MASK |
436 GDK_KEY_PRESS_MASK |
437 GDK_KEY_RELEASE_MASK |
438 GDK_ENTER_NOTIFY_MASK |
439 GDK_LEAVE_NOTIFY_MASK |
440 GDK_FOCUS_CHANGE_MASK;
441
442 pizza->bin_window = gdk_window_new(widget->window,
443 &attributes, attributes_mask);
444 gdk_window_set_user_data (pizza->bin_window, widget);
445
446 widget->style = gtk_style_attach (widget->style, widget->window);
447 gtk_style_set_background (widget->style, widget->window, GTK_STATE_NORMAL);
448 gtk_style_set_background (widget->style, pizza->bin_window, GTK_STATE_NORMAL );
449
450 /*
451 gdk_window_set_back_pixmap( widget->window, NULL, FALSE );
452 gdk_window_set_back_pixmap( pizza->bin_window, NULL, FALSE );
453 */
454
455 /* cannot be done before realisation */
456 children = pizza->children;
457 while (children)
458 {
459 child = children->data;
460 children = children->next;
461
462 gtk_widget_set_parent_window (child->widget, pizza->bin_window);
463 }
464 }
465
466 static void
467 gtk_pizza_unrealize (GtkWidget *widget)
468 {
469 GtkPizza *pizza;
470
471 g_return_if_fail (widget != NULL);
472 g_return_if_fail (GTK_IS_PIZZA (widget));
473
474 pizza = GTK_PIZZA (widget);
475
476 gdk_window_set_user_data (pizza->bin_window, NULL);
477 gdk_window_destroy (pizza->bin_window);
478 pizza->bin_window = NULL;
479
480 if (GTK_WIDGET_CLASS (pizza_parent_class)->unrealize)
481 (* GTK_WIDGET_CLASS (pizza_parent_class)->unrealize) (widget);
482 }
483
484 static void
485 gtk_pizza_size_request (GtkWidget *widget,
486 GtkRequisition *requisition)
487 {
488 GtkPizza *pizza;
489 GtkPizzaChild *child;
490 GList *children;
491 GtkRequisition child_requisition;
492
493 g_return_if_fail (widget != NULL);
494 g_return_if_fail (GTK_IS_PIZZA (widget));
495 g_return_if_fail (requisition != NULL);
496
497 pizza = GTK_PIZZA (widget);
498
499 children = pizza->children;
500 while (children)
501 {
502 child = children->data;
503 children = children->next;
504
505 if (GTK_WIDGET_VISIBLE (child->widget))
506 {
507 gtk_widget_size_request (child->widget, &child_requisition);
508 }
509 }
510
511 /* request very little, I'm not sure if requesting nothing
512 will always have positive effects on stability... */
513 requisition->width = 2;
514 requisition->height = 2;
515 }
516
517 static void
518 gtk_pizza_size_allocate (GtkWidget *widget,
519 GtkAllocation *allocation)
520 {
521 GtkPizza *pizza;
522 gint border;
523 gint x,y,w,h;
524 GtkPizzaChild *child;
525 GList *children;
526
527 g_return_if_fail (widget != NULL);
528 g_return_if_fail (GTK_IS_PIZZA(widget));
529 g_return_if_fail (allocation != NULL);
530
531 pizza = GTK_PIZZA (widget);
532
533 widget->allocation = *allocation;
534
535 if (pizza->shadow_type == GTK_MYSHADOW_NONE)
536 border = 0;
537 else
538 if (pizza->shadow_type == GTK_MYSHADOW_THIN)
539 border = 1;
540 else
541 border = 2;
542
543 x = allocation->x + border;
544 y = allocation->y + border;
545 w = allocation->width - border*2;
546 h = allocation->height - border*2;
547 if (w < 0)
548 w = 0;
549 if (h < 0)
550 h = 0;
551
552 if (GTK_WIDGET_REALIZED (widget))
553 {
554 gdk_window_move_resize( widget->window, x, y, w, h );
555 gdk_window_move_resize( pizza->bin_window, 0, 0, w, h );
556 }
557
558 children = pizza->children;
559 while (children)
560 {
561 child = children->data;
562 children = children->next;
563
564 gtk_pizza_allocate_child (pizza, child);
565 }
566 }
567
568 static gint
569 gtk_pizza_expose (GtkWidget *widget,
570 GdkEventExpose *event)
571 {
572 GtkPizza *pizza;
573
574 g_return_val_if_fail (widget != NULL, FALSE);
575 g_return_val_if_fail (GTK_IS_PIZZA (widget), FALSE);
576 g_return_val_if_fail (event != NULL, FALSE);
577
578 pizza = GTK_PIZZA (widget);
579
580 if (event->window != pizza->bin_window)
581 return FALSE;
582
583 /* We handle all expose events in window.cpp now. */
584 if (pizza->external_expose)
585 return FALSE;
586
587 (* GTK_WIDGET_CLASS (pizza_parent_class)->expose_event) (widget, event);
588
589 return FALSE;
590 }
591
592 static void
593 gtk_pizza_style_set(GtkWidget *widget, GtkStyle *previous_style)
594 {
595 if (GTK_WIDGET_REALIZED(widget))
596 {
597 gtk_style_set_background(widget->style, widget->window, GTK_STATE_NORMAL);
598 gtk_style_set_background(widget->style, GTK_PIZZA(widget)->bin_window, GTK_STATE_NORMAL );
599 }
600
601 (* GTK_WIDGET_CLASS (pizza_parent_class)->style_set) (widget, previous_style);
602 }
603
604 static void
605 gtk_pizza_add (GtkContainer *container,
606 GtkWidget *widget)
607 {
608 g_return_if_fail (container != NULL);
609 g_return_if_fail (GTK_IS_PIZZA (container));
610 g_return_if_fail (widget != NULL);
611
612 gtk_pizza_put (GTK_PIZZA (container), widget, 0, 0, 20, 20 );
613 }
614
615 static void
616 gtk_pizza_remove (GtkContainer *container,
617 GtkWidget *widget)
618 {
619 GtkPizza *pizza;
620 GtkPizzaChild *child;
621 GList *children;
622
623 g_return_if_fail (container != NULL);
624 g_return_if_fail (GTK_IS_PIZZA (container));
625 g_return_if_fail (widget != NULL);
626
627 pizza = GTK_PIZZA (container);
628
629 children = pizza->children;
630 while (children)
631 {
632 child = children->data;
633
634 if (child->widget == widget)
635 {
636 gtk_widget_unparent (widget);
637
638 /* security checks */
639 g_return_if_fail (GTK_IS_WIDGET (widget));
640
641 pizza->children = g_list_remove_link (pizza->children, children);
642 g_list_free (children);
643 g_free (child);
644
645 /* security checks */
646 g_return_if_fail (GTK_IS_WIDGET (widget));
647
648 break;
649 }
650
651 children = children->next;
652 }
653 }
654
655 static void
656 gtk_pizza_forall (GtkContainer *container,
657 gboolean include_internals,
658 GtkCallback callback,
659 gpointer callback_data)
660 {
661 GtkPizza *pizza;
662 GtkPizzaChild *child;
663 GList *children;
664
665 g_return_if_fail (container != NULL);
666 g_return_if_fail (GTK_IS_PIZZA (container));
667 g_return_if_fail (callback != (GtkCallback)NULL);
668
669 pizza = GTK_PIZZA (container);
670
671 children = pizza->children;
672 while (children)
673 {
674 child = children->data;
675 children = children->next;
676
677 (* callback) (child->widget, callback_data);
678 }
679 }
680
681 static void
682 gtk_pizza_allocate_child (GtkPizza *pizza,
683 GtkPizzaChild *child)
684 {
685 GtkAllocation allocation;
686 GtkRequisition requisition;
687
688 allocation.x = child->x - pizza->xoffset;
689 allocation.y = child->y - pizza->yoffset;
690 gtk_widget_get_child_requisition (child->widget, &requisition);
691 allocation.width = requisition.width;
692 allocation.height = requisition.height;
693
694 gtk_widget_size_allocate (child->widget, &allocation);
695 }
696
697 static void
698 gtk_pizza_adjust_allocations_recurse (GtkWidget *widget,
699 gpointer cb_data)
700 {
701 GtkPizzaAdjData *data = cb_data;
702
703 widget->allocation.x += data->dx;
704 widget->allocation.y += data->dy;
705
706 if (GTK_WIDGET_NO_WINDOW (widget) && GTK_IS_CONTAINER (widget))
707 {
708 gtk_container_forall (GTK_CONTAINER (widget),
709 gtk_pizza_adjust_allocations_recurse,
710 cb_data);
711 }
712 }
713
714 static void
715 gtk_pizza_adjust_allocations (GtkPizza *pizza,
716 gint dx,
717 gint dy)
718 {
719 GList *tmp_list;
720 GtkPizzaAdjData data;
721
722 data.dx = dx;
723 data.dy = dy;
724
725 tmp_list = pizza->children;
726 while (tmp_list)
727 {
728 GtkPizzaChild *child = tmp_list->data;
729 tmp_list = tmp_list->next;
730
731 child->widget->allocation.x += dx;
732 child->widget->allocation.y += dy;
733
734 if (GTK_WIDGET_NO_WINDOW (child->widget) &&
735 GTK_IS_CONTAINER (child->widget))
736 {
737 gtk_container_forall (GTK_CONTAINER (child->widget),
738 gtk_pizza_adjust_allocations_recurse,
739 &data);
740 }
741 }
742 }
743
744 void
745 gtk_pizza_scroll (GtkPizza *pizza, gint dx, gint dy)
746 {
747 pizza->xoffset += dx;
748 pizza->yoffset += dy;
749
750 gtk_pizza_adjust_allocations (pizza, -dx, -dy);
751
752 if (pizza->bin_window)
753 gdk_window_scroll( pizza->bin_window, -dx, -dy );
754 }
755
756 #ifdef __cplusplus
757 }
758 #endif /* __cplusplus */
wxWidgets (Impactor)