forked from Floorp-Projects/Floorp
-
Notifications
You must be signed in to change notification settings - Fork 0
/
Copy pathWidgetStyleCache.cpp
1265 lines (1158 loc) · 43 KB
/
WidgetStyleCache.cpp
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include <dlfcn.h>
#include <gtk/gtk.h>
#include "WidgetStyleCache.h"
#include "gtkdrawing.h"
#define STATE_FLAG_DIR_LTR (1U << 7)
#define STATE_FLAG_DIR_RTL (1U << 8)
#if GTK_CHECK_VERSION(3,8,0)
static_assert(GTK_STATE_FLAG_DIR_LTR == STATE_FLAG_DIR_LTR &&
GTK_STATE_FLAG_DIR_RTL == STATE_FLAG_DIR_RTL,
"incorrect direction state flags");
#endif
static GtkWidget* sWidgetStorage[MOZ_GTK_WIDGET_NODE_COUNT];
static GtkStyleContext* sStyleStorage[MOZ_GTK_WIDGET_NODE_COUNT];
static GtkStyleContext*
GetWidgetRootStyle(WidgetNodeType aNodeType);
static GtkStyleContext*
GetCssNodeStyleInternal(WidgetNodeType aNodeType);
static GtkWidget*
CreateWindowWidget()
{
GtkWidget *widget = gtk_window_new(GTK_WINDOW_POPUP);
gtk_widget_set_name(widget, "MozillaGtkWidget");
return widget;
}
static GtkWidget*
CreateWindowContainerWidget()
{
GtkWidget *widget = gtk_fixed_new();
gtk_container_add(GTK_CONTAINER(GetWidget(MOZ_GTK_WINDOW)), widget);
return widget;
}
static void
AddToWindowContainer(GtkWidget* widget)
{
gtk_container_add(GTK_CONTAINER(GetWidget(MOZ_GTK_WINDOW_CONTAINER)), widget);
}
static GtkWidget*
CreateScrollbarWidget(WidgetNodeType aWidgetType, GtkOrientation aOrientation)
{
GtkWidget* widget = gtk_scrollbar_new(aOrientation, nullptr);
AddToWindowContainer(widget);
return widget;
}
static GtkWidget*
CreateCheckboxWidget()
{
GtkWidget* widget = gtk_check_button_new_with_label("M");
AddToWindowContainer(widget);
return widget;
}
static GtkWidget*
CreateRadiobuttonWidget()
{
GtkWidget* widget = gtk_radio_button_new_with_label(nullptr, "M");
AddToWindowContainer(widget);
return widget;
}
static GtkWidget*
CreateMenuBarWidget()
{
GtkWidget* widget = gtk_menu_bar_new();
AddToWindowContainer(widget);
return widget;
}
static GtkWidget*
CreateMenuPopupWidget()
{
GtkWidget* widget = gtk_menu_new();
gtk_menu_attach_to_widget(GTK_MENU(widget), GetWidget(MOZ_GTK_WINDOW),
nullptr);
return widget;
}
static GtkWidget*
CreateProgressWidget()
{
GtkWidget* widget = gtk_progress_bar_new();
AddToWindowContainer(widget);
return widget;
}
static GtkWidget*
CreateTooltipWidget()
{
MOZ_ASSERT(gtk_check_version(3, 20, 0) != nullptr,
"CreateTooltipWidget should be used for Gtk < 3.20 only.");
GtkWidget* widget = CreateWindowWidget();
GtkStyleContext* style = gtk_widget_get_style_context(widget);
gtk_style_context_add_class(style, GTK_STYLE_CLASS_TOOLTIP);
return widget;
}
static GtkWidget*
CreateExpanderWidget()
{
GtkWidget* widget = gtk_expander_new("M");
AddToWindowContainer(widget);
return widget;
}
static GtkWidget*
CreateFrameWidget()
{
GtkWidget* widget = gtk_frame_new(nullptr);
AddToWindowContainer(widget);
return widget;
}
static GtkWidget*
CreateGripperWidget()
{
GtkWidget* widget = gtk_handle_box_new();
AddToWindowContainer(widget);
return widget;
}
static GtkWidget*
CreateToolbarWidget()
{
GtkWidget* widget = gtk_toolbar_new();
gtk_container_add(GTK_CONTAINER(GetWidget(MOZ_GTK_GRIPPER)), widget);
return widget;
}
static GtkWidget*
CreateToolbarSeparatorWidget()
{
GtkWidget* widget = GTK_WIDGET(gtk_separator_tool_item_new());
AddToWindowContainer(widget);
return widget;
}
static GtkWidget*
CreateInfoBarWidget()
{
GtkWidget* widget = gtk_info_bar_new();
AddToWindowContainer(widget);
return widget;
}
static GtkWidget*
CreateButtonWidget()
{
GtkWidget* widget = gtk_button_new_with_label("M");
AddToWindowContainer(widget);
return widget;
}
static GtkWidget*
CreateToggleButtonWidget()
{
GtkWidget* widget = gtk_toggle_button_new();
AddToWindowContainer(widget);
return widget;
}
static GtkWidget*
CreateButtonArrowWidget()
{
GtkWidget* widget = gtk_arrow_new(GTK_ARROW_DOWN, GTK_SHADOW_OUT);
gtk_container_add(GTK_CONTAINER(GetWidget(MOZ_GTK_TOGGLE_BUTTON)), widget);
gtk_widget_show(widget);
return widget;
}
static GtkWidget*
CreateSpinWidget()
{
GtkWidget* widget = gtk_spin_button_new(nullptr, 1, 0);
AddToWindowContainer(widget);
return widget;
}
static GtkWidget*
CreateEntryWidget()
{
GtkWidget* widget = gtk_entry_new();
AddToWindowContainer(widget);
return widget;
}
static GtkWidget*
CreateComboBoxWidget()
{
GtkWidget* widget = gtk_combo_box_new();
AddToWindowContainer(widget);
return widget;
}
typedef struct
{
GType type;
GtkWidget** widget;
} GtkInnerWidgetInfo;
static void
GetInnerWidget(GtkWidget* widget, gpointer client_data)
{
auto info = static_cast<GtkInnerWidgetInfo*>(client_data);
if (G_TYPE_CHECK_INSTANCE_TYPE(widget, info->type)) {
*info->widget = widget;
}
}
static GtkWidget*
CreateComboBoxButtonWidget()
{
GtkWidget* comboBox = GetWidget(MOZ_GTK_COMBOBOX);
GtkWidget* comboBoxButton = nullptr;
/* Get its inner Button */
GtkInnerWidgetInfo info = { GTK_TYPE_TOGGLE_BUTTON,
&comboBoxButton };
gtk_container_forall(GTK_CONTAINER(comboBox),
GetInnerWidget, &info);
if (!comboBoxButton) {
/* Shouldn't be reached with current internal gtk implementation; we
* use a generic toggle button as last resort fallback to avoid
* crashing. */
comboBoxButton = GetWidget(MOZ_GTK_TOGGLE_BUTTON);
} else {
/* We need to have pointers to the inner widgets (button, separator, arrow)
* of the ComboBox to get the correct rendering from theme engines which
* special cases their look. Since the inner layout can change, we ask GTK
* to NULL our pointers when they are about to become invalid because the
* corresponding widgets don't exist anymore. It's the role of
* g_object_add_weak_pointer().
* Note that if we don't find the inner widgets (which shouldn't happen), we
* fallback to use generic "non-inner" widgets, and they don't need that kind
* of weak pointer since they are explicit children of gProtoLayout and as
* such GTK holds a strong reference to them. */
g_object_add_weak_pointer(G_OBJECT(comboBoxButton),
reinterpret_cast<gpointer *>(sWidgetStorage) +
MOZ_GTK_COMBOBOX_BUTTON);
}
return comboBoxButton;
}
static GtkWidget*
CreateComboBoxArrowWidget()
{
GtkWidget* comboBoxButton = GetWidget(MOZ_GTK_COMBOBOX_BUTTON);
GtkWidget* comboBoxArrow = nullptr;
/* Get the widgets inside the Button */
GtkWidget* buttonChild = gtk_bin_get_child(GTK_BIN(comboBoxButton));
if (GTK_IS_BOX(buttonChild)) {
/* appears-as-list = FALSE, cell-view = TRUE; the button
* contains an hbox. This hbox is there because the ComboBox
* needs to place a cell renderer, a separator, and an arrow in
* the button when appears-as-list is FALSE. */
GtkInnerWidgetInfo info = { GTK_TYPE_ARROW,
&comboBoxArrow };
gtk_container_forall(GTK_CONTAINER(buttonChild),
GetInnerWidget, &info);
} else if (GTK_IS_ARROW(buttonChild)) {
/* appears-as-list = TRUE, or cell-view = FALSE;
* the button only contains an arrow */
comboBoxArrow = buttonChild;
}
if (!comboBoxArrow) {
/* Shouldn't be reached with current internal gtk implementation;
* we gButtonArrowWidget as last resort fallback to avoid
* crashing. */
comboBoxArrow = GetWidget(MOZ_GTK_BUTTON_ARROW);
} else {
g_object_add_weak_pointer(G_OBJECT(comboBoxArrow),
reinterpret_cast<gpointer *>(sWidgetStorage) +
MOZ_GTK_COMBOBOX_ARROW);
}
return comboBoxArrow;
}
static GtkWidget*
CreateComboBoxSeparatorWidget()
{
// Ensure to search for separator only once as it can fail
// TODO - it won't initialize after ResetWidgetCache() call
static bool isMissingSeparator = false;
if (isMissingSeparator)
return nullptr;
/* Get the widgets inside the Button */
GtkWidget* comboBoxSeparator = nullptr;
GtkWidget* buttonChild =
gtk_bin_get_child(GTK_BIN(GetWidget(MOZ_GTK_COMBOBOX_BUTTON)));
if (GTK_IS_BOX(buttonChild)) {
/* appears-as-list = FALSE, cell-view = TRUE; the button
* contains an hbox. This hbox is there because the ComboBox
* needs to place a cell renderer, a separator, and an arrow in
* the button when appears-as-list is FALSE. */
GtkInnerWidgetInfo info = { GTK_TYPE_SEPARATOR,
&comboBoxSeparator };
gtk_container_forall(GTK_CONTAINER(buttonChild),
GetInnerWidget, &info);
}
if (comboBoxSeparator) {
g_object_add_weak_pointer(G_OBJECT(comboBoxSeparator),
reinterpret_cast<gpointer *>(sWidgetStorage) +
MOZ_GTK_COMBOBOX_SEPARATOR);
} else {
/* comboBoxSeparator may be NULL
* when "appears-as-list" = TRUE or "cell-view" = FALSE;
* if there is no separator, then we just won't paint it. */
isMissingSeparator = true;
}
return comboBoxSeparator;
}
static GtkWidget*
CreateComboBoxEntryWidget()
{
GtkWidget* widget = gtk_combo_box_new_with_entry();
AddToWindowContainer(widget);
return widget;
}
static GtkWidget*
CreateComboBoxEntryTextareaWidget()
{
GtkWidget* comboBoxTextarea = nullptr;
/* Get its inner Entry and Button */
GtkInnerWidgetInfo info = { GTK_TYPE_ENTRY,
&comboBoxTextarea };
gtk_container_forall(GTK_CONTAINER(GetWidget(MOZ_GTK_COMBOBOX_ENTRY)),
GetInnerWidget, &info);
if (!comboBoxTextarea) {
comboBoxTextarea = GetWidget(MOZ_GTK_ENTRY);
} else {
g_object_add_weak_pointer(G_OBJECT(comboBoxTextarea),
reinterpret_cast<gpointer *>(sWidgetStorage) +
MOZ_GTK_COMBOBOX_ENTRY);
}
return comboBoxTextarea;
}
static GtkWidget*
CreateComboBoxEntryButtonWidget()
{
GtkWidget* comboBoxButton = nullptr;
/* Get its inner Entry and Button */
GtkInnerWidgetInfo info = { GTK_TYPE_TOGGLE_BUTTON,
&comboBoxButton };
gtk_container_forall(GTK_CONTAINER(GetWidget(MOZ_GTK_COMBOBOX_ENTRY)),
GetInnerWidget, &info);
if (!comboBoxButton) {
comboBoxButton = GetWidget(MOZ_GTK_TOGGLE_BUTTON);
} else {
g_object_add_weak_pointer(G_OBJECT(comboBoxButton),
reinterpret_cast<gpointer *>(sWidgetStorage) +
MOZ_GTK_COMBOBOX_ENTRY_BUTTON);
}
return comboBoxButton;
}
static GtkWidget*
CreateComboBoxEntryArrowWidget()
{
GtkWidget* comboBoxArrow = nullptr;
/* Get the Arrow inside the Button */
GtkWidget* buttonChild =
gtk_bin_get_child(GTK_BIN(GetWidget(MOZ_GTK_COMBOBOX_ENTRY_BUTTON)));
if (GTK_IS_BOX(buttonChild)) {
/* appears-as-list = FALSE, cell-view = TRUE; the button
* contains an hbox. This hbox is there because the ComboBox
* needs to place a cell renderer, a separator, and an arrow in
* the button when appears-as-list is FALSE. */
GtkInnerWidgetInfo info = { GTK_TYPE_ARROW,
&comboBoxArrow };
gtk_container_forall(GTK_CONTAINER(buttonChild),
GetInnerWidget, &info);
} else if (GTK_IS_ARROW(buttonChild)) {
/* appears-as-list = TRUE, or cell-view = FALSE;
* the button only contains an arrow */
comboBoxArrow = buttonChild;
}
if (!comboBoxArrow) {
/* Shouldn't be reached with current internal gtk implementation;
* we gButtonArrowWidget as last resort fallback to avoid
* crashing. */
comboBoxArrow = GetWidget(MOZ_GTK_BUTTON_ARROW);
} else {
g_object_add_weak_pointer(G_OBJECT(comboBoxArrow),
reinterpret_cast<gpointer *>(sWidgetStorage) +
MOZ_GTK_COMBOBOX_ENTRY_ARROW);
}
return comboBoxArrow;
}
static GtkWidget*
CreateScrolledWindowWidget()
{
GtkWidget* widget = gtk_scrolled_window_new(nullptr, nullptr);
AddToWindowContainer(widget);
return widget;
}
static GtkWidget*
CreateMenuSeparatorWidget()
{
GtkWidget* widget = gtk_separator_menu_item_new();
gtk_menu_shell_append(GTK_MENU_SHELL(GetWidget(MOZ_GTK_MENUPOPUP)),
widget);
return widget;
}
static GtkWidget*
CreateTreeViewWidget()
{
GtkWidget* widget = gtk_tree_view_new();
AddToWindowContainer(widget);
return widget;
}
static GtkWidget*
CreateTreeHeaderCellWidget()
{
/*
* Some GTK engines paint the first and last cell
* of a TreeView header with a highlight.
* Since we do not know where our widget will be relative
* to the other buttons in the TreeView header, we must
* paint it as a button that is between two others,
* thus ensuring it is neither the first or last button
* in the header.
* GTK doesn't give us a way to do this explicitly,
* so we must paint with a button that is between two
* others.
*/
GtkTreeViewColumn* firstTreeViewColumn;
GtkTreeViewColumn* middleTreeViewColumn;
GtkTreeViewColumn* lastTreeViewColumn;
GtkWidget *treeView = GetWidget(MOZ_GTK_TREEVIEW);
/* Create and append our three columns */
firstTreeViewColumn = gtk_tree_view_column_new();
gtk_tree_view_column_set_title(firstTreeViewColumn, "M");
gtk_tree_view_append_column(GTK_TREE_VIEW(treeView),
firstTreeViewColumn);
middleTreeViewColumn = gtk_tree_view_column_new();
gtk_tree_view_column_set_title(middleTreeViewColumn, "M");
gtk_tree_view_append_column(GTK_TREE_VIEW(treeView),
middleTreeViewColumn);
lastTreeViewColumn = gtk_tree_view_column_new();
gtk_tree_view_column_set_title(lastTreeViewColumn, "M");
gtk_tree_view_append_column(GTK_TREE_VIEW(treeView),
lastTreeViewColumn);
/* Use the middle column's header for our button */
return gtk_tree_view_column_get_button(middleTreeViewColumn);
}
static GtkWidget*
CreateTreeHeaderSortArrowWidget()
{
/* TODO, but it can't be NULL */
GtkWidget* widget = gtk_button_new();
AddToWindowContainer(widget);
return widget;
}
static GtkWidget*
CreateHPanedWidget()
{
GtkWidget* widget = gtk_paned_new(GTK_ORIENTATION_HORIZONTAL);
AddToWindowContainer(widget);
return widget;
}
static GtkWidget*
CreateVPanedWidget()
{
GtkWidget* widget = gtk_paned_new(GTK_ORIENTATION_VERTICAL);
AddToWindowContainer(widget);
return widget;
}
static GtkWidget*
CreateScaleWidget(GtkOrientation aOrientation)
{
GtkWidget* widget = gtk_scale_new(aOrientation, nullptr);
AddToWindowContainer(widget);
return widget;
}
static GtkWidget*
CreateNotebookWidget()
{
GtkWidget* widget = gtk_notebook_new();
AddToWindowContainer(widget);
return widget;
}
static GtkWidget*
CreateWidget(WidgetNodeType aWidgetType)
{
switch (aWidgetType) {
case MOZ_GTK_WINDOW:
return CreateWindowWidget();
case MOZ_GTK_WINDOW_CONTAINER:
return CreateWindowContainerWidget();
case MOZ_GTK_CHECKBUTTON_CONTAINER:
return CreateCheckboxWidget();
case MOZ_GTK_PROGRESSBAR:
return CreateProgressWidget();
case MOZ_GTK_RADIOBUTTON_CONTAINER:
return CreateRadiobuttonWidget();
case MOZ_GTK_SCROLLBAR_HORIZONTAL:
return CreateScrollbarWidget(aWidgetType,
GTK_ORIENTATION_HORIZONTAL);
case MOZ_GTK_SCROLLBAR_VERTICAL:
return CreateScrollbarWidget(aWidgetType,
GTK_ORIENTATION_VERTICAL);
case MOZ_GTK_MENUBAR:
return CreateMenuBarWidget();
case MOZ_GTK_MENUPOPUP:
return CreateMenuPopupWidget();
case MOZ_GTK_MENUSEPARATOR:
return CreateMenuSeparatorWidget();
case MOZ_GTK_EXPANDER:
return CreateExpanderWidget();
case MOZ_GTK_FRAME:
return CreateFrameWidget();
case MOZ_GTK_GRIPPER:
return CreateGripperWidget();
case MOZ_GTK_TOOLBAR:
return CreateToolbarWidget();
case MOZ_GTK_TOOLBAR_SEPARATOR:
return CreateToolbarSeparatorWidget();
case MOZ_GTK_INFO_BAR:
return CreateInfoBarWidget();
case MOZ_GTK_SPINBUTTON:
return CreateSpinWidget();
case MOZ_GTK_BUTTON:
return CreateButtonWidget();
case MOZ_GTK_TOGGLE_BUTTON:
return CreateToggleButtonWidget();
case MOZ_GTK_BUTTON_ARROW:
return CreateButtonArrowWidget();
case MOZ_GTK_ENTRY:
return CreateEntryWidget();
case MOZ_GTK_SCROLLED_WINDOW:
return CreateScrolledWindowWidget();
case MOZ_GTK_TREEVIEW:
return CreateTreeViewWidget();
case MOZ_GTK_TREE_HEADER_CELL:
return CreateTreeHeaderCellWidget();
case MOZ_GTK_TREE_HEADER_SORTARROW:
return CreateTreeHeaderSortArrowWidget();
case MOZ_GTK_SPLITTER_HORIZONTAL:
return CreateHPanedWidget();
case MOZ_GTK_SPLITTER_VERTICAL:
return CreateVPanedWidget();
case MOZ_GTK_SCALE_HORIZONTAL:
return CreateScaleWidget(GTK_ORIENTATION_HORIZONTAL);
case MOZ_GTK_SCALE_VERTICAL:
return CreateScaleWidget(GTK_ORIENTATION_VERTICAL);
case MOZ_GTK_NOTEBOOK:
return CreateNotebookWidget();
case MOZ_GTK_COMBOBOX:
return CreateComboBoxWidget();
case MOZ_GTK_COMBOBOX_BUTTON:
return CreateComboBoxButtonWidget();
case MOZ_GTK_COMBOBOX_ARROW:
return CreateComboBoxArrowWidget();
case MOZ_GTK_COMBOBOX_SEPARATOR:
return CreateComboBoxSeparatorWidget();
case MOZ_GTK_COMBOBOX_ENTRY:
return CreateComboBoxEntryWidget();
case MOZ_GTK_COMBOBOX_ENTRY_TEXTAREA:
return CreateComboBoxEntryTextareaWidget();
case MOZ_GTK_COMBOBOX_ENTRY_BUTTON:
return CreateComboBoxEntryButtonWidget();
case MOZ_GTK_COMBOBOX_ENTRY_ARROW:
return CreateComboBoxEntryArrowWidget();
default:
/* Not implemented */
return nullptr;
}
}
GtkWidget*
GetWidget(WidgetNodeType aWidgetType)
{
GtkWidget* widget = sWidgetStorage[aWidgetType];
if (!widget) {
widget = CreateWidget(aWidgetType);
sWidgetStorage[aWidgetType] = widget;
}
return widget;
}
static void
AddStyleClassesFromStyle(GtkStyleContext* aDest, GtkStyleContext* aSrc)
{
GList* classes = gtk_style_context_list_classes(aSrc);
for (GList* link = classes; link; link = link->next) {
gtk_style_context_add_class(aDest, static_cast<gchar*>(link->data));
}
g_list_free(classes);
}
GtkStyleContext*
CreateStyleForWidget(GtkWidget* aWidget, GtkStyleContext* aParentStyle)
{
static auto sGtkWidgetClassGetCSSName =
reinterpret_cast<const char* (*)(GtkWidgetClass*)>
(dlsym(RTLD_DEFAULT, "gtk_widget_class_get_css_name"));
GtkWidgetClass *widgetClass = GTK_WIDGET_GET_CLASS(aWidget);
const gchar* name = sGtkWidgetClassGetCSSName ?
sGtkWidgetClassGetCSSName(widgetClass) : nullptr;
GtkStyleContext *context =
CreateCSSNode(name, aParentStyle, G_TYPE_FROM_CLASS(widgetClass));
// Classes are stored on the style context instead of the path so that any
// future gtk_style_context_save() will inherit classes on the head CSS
// node, in the same way as happens when called on a style context owned by
// a widget.
//
// Classes can be stored on a GtkCssNodeDeclaration and/or the path.
// gtk_style_context_save() reuses the GtkCssNodeDeclaration, and appends a
// new object to the path, without copying the classes from the old path
// head. The new head picks up classes from the GtkCssNodeDeclaration, but
// not the path. GtkWidgets store their classes on the
// GtkCssNodeDeclaration, so make sure to add classes there.
//
// Picking up classes from the style context also means that
// https://bugzilla.gnome.org/show_bug.cgi?id=767312, which can stop
// gtk_widget_path_append_for_widget() from finding classes in GTK 3.20,
// is not a problem.
GtkStyleContext* widgetStyle = gtk_widget_get_style_context(aWidget);
AddStyleClassesFromStyle(context, widgetStyle);
// Release any floating reference on aWidget.
g_object_ref_sink(aWidget);
g_object_unref(aWidget);
return context;
}
static GtkStyleContext*
CreateStyleForWidget(GtkWidget* aWidget, WidgetNodeType aParentType)
{
return CreateStyleForWidget(aWidget, GetWidgetRootStyle(aParentType));
}
GtkStyleContext*
CreateCSSNode(const char* aName, GtkStyleContext* aParentStyle, GType aType)
{
static auto sGtkWidgetPathIterSetObjectName =
reinterpret_cast<void (*)(GtkWidgetPath *, gint, const char *)>
(dlsym(RTLD_DEFAULT, "gtk_widget_path_iter_set_object_name"));
GtkWidgetPath* path;
if (aParentStyle) {
path = gtk_widget_path_copy(gtk_style_context_get_path(aParentStyle));
// Copy classes from the parent style context to its corresponding node in
// the path, because GTK will only match against ancestor classes if they
// are on the path.
GList* classes = gtk_style_context_list_classes(aParentStyle);
for (GList* link = classes; link; link = link->next) {
gtk_widget_path_iter_add_class(path, -1, static_cast<gchar*>(link->data));
}
g_list_free(classes);
} else {
path = gtk_widget_path_new();
}
gtk_widget_path_append_type(path, aType);
if (sGtkWidgetPathIterSetObjectName) {
(*sGtkWidgetPathIterSetObjectName)(path, -1, aName);
}
GtkStyleContext *context = gtk_style_context_new();
gtk_style_context_set_path(context, path);
gtk_style_context_set_parent(context, aParentStyle);
gtk_widget_path_unref(path);
// In GTK 3.4, gtk_render_* functions use |theming_engine| on the style
// context without ensuring any style resolution sets it appropriately
// in style_data_lookup(). e.g.
// https://git.gnome.org/browse/gtk+/tree/gtk/gtkstylecontext.c?h=3.4.4#n3847
//
// That can result in incorrect drawing on first draw. To work around this,
// force a style look-up to set |theming_engine|. It is sufficient to do
// this only on context creation, instead of after every modification to the
// context, because themes typically (Ambiance and oxygen-gtk, at least) set
// the "engine" property with the '*' selector.
if (GTK_MAJOR_VERSION == 3 && gtk_get_minor_version() < 6) {
GdkRGBA unused;
gtk_style_context_get_color(context, GTK_STATE_FLAG_NORMAL, &unused);
}
return context;
}
// Return a style context matching that of the root CSS node of a widget.
// This is used by all GTK versions.
static GtkStyleContext*
GetWidgetRootStyle(WidgetNodeType aNodeType)
{
GtkStyleContext* style = sStyleStorage[aNodeType];
if (style)
return style;
switch (aNodeType) {
case MOZ_GTK_MENUBARITEM:
style = CreateStyleForWidget(gtk_menu_item_new(), MOZ_GTK_MENUBAR);
break;
case MOZ_GTK_MENUITEM:
style = CreateStyleForWidget(gtk_menu_item_new(), MOZ_GTK_MENUPOPUP);
break;
case MOZ_GTK_CHECKMENUITEM:
style = CreateStyleForWidget(gtk_check_menu_item_new(), MOZ_GTK_MENUPOPUP);
break;
case MOZ_GTK_RADIOMENUITEM:
style = CreateStyleForWidget(gtk_radio_menu_item_new(nullptr),
MOZ_GTK_MENUPOPUP);
break;
case MOZ_GTK_TEXT_VIEW:
style = CreateStyleForWidget(gtk_text_view_new(),
MOZ_GTK_SCROLLED_WINDOW);
break;
case MOZ_GTK_TOOLTIP:
if (gtk_check_version(3, 20, 0) != nullptr) {
// The tooltip style class is added first in CreateTooltipWidget()
// and transfered to style in CreateStyleForWidget().
GtkWidget* tooltipWindow = CreateTooltipWidget();
style = CreateStyleForWidget(tooltipWindow, nullptr);
gtk_widget_destroy(tooltipWindow); // Release GtkWindow self-reference.
} else {
// We create this from the path because GtkTooltipWindow is not public.
style = CreateCSSNode("tooltip", nullptr, GTK_TYPE_TOOLTIP);
gtk_style_context_add_class(style, GTK_STYLE_CLASS_BACKGROUND);
}
break;
case MOZ_GTK_TOOLTIP_BOX:
style = CreateStyleForWidget(gtk_box_new(GTK_ORIENTATION_HORIZONTAL, 0),
MOZ_GTK_TOOLTIP);
break;
case MOZ_GTK_TOOLTIP_BOX_LABEL:
style = CreateStyleForWidget(gtk_label_new(nullptr),
MOZ_GTK_TOOLTIP_BOX);
break;
default:
GtkWidget* widget = GetWidget(aNodeType);
MOZ_ASSERT(widget);
return gtk_widget_get_style_context(widget);
}
MOZ_ASSERT(style);
sStyleStorage[aNodeType] = style;
return style;
}
static GtkStyleContext*
CreateChildCSSNode(const char* aName, WidgetNodeType aParentNodeType)
{
return CreateCSSNode(aName, GetCssNodeStyleInternal(aParentNodeType));
}
// Create a style context equivalent to a saved root style context of
// |aWidgetType| with |aStyleClass| as an additional class. This is used to
// produce a context equivalent to what GTK versions < 3.20 use for many
// internal parts of widgets.
static GtkStyleContext*
CreateSubStyleWithClass(WidgetNodeType aWidgetType, const gchar* aStyleClass)
{
static auto sGtkWidgetPathIterGetObjectName =
reinterpret_cast<const char* (*)(const GtkWidgetPath*, gint)>
(dlsym(RTLD_DEFAULT, "gtk_widget_path_iter_get_object_name"));
GtkStyleContext* parentStyle = GetWidgetRootStyle(aWidgetType);
// Create a new context that behaves like |parentStyle| would after
// gtk_style_context_save(parentStyle).
//
// Avoiding gtk_style_context_save() avoids the need to manage the
// restore, and a new context permits caching style resolution.
//
// gtk_style_context_save(context) changes the node hierarchy of |context|
// to add a new GtkCssNodeDeclaration that is a copy of its original node.
// The new node is a child of the original node, and so the new heirarchy is
// one level deeper. The new node receives the same classes as the
// original, but any changes to the classes on |context| will change only
// the new node. The new node inherits properties from the original node
// (which retains the original heirarchy and classes) and matches CSS rules
// with the new heirarchy and any changes to the classes.
//
// The change in hierarchy can produce some surprises in matching theme CSS
// rules (e.g. https://bugzilla.gnome.org/show_bug.cgi?id=761870#c2), but it
// is important here to produce the same behavior so that rules match the
// same widget parts in Gecko as they do in GTK.
//
// When using public GTK API to construct style contexts, a widget path is
// required. CSS rules are not matched against the style context heirarchy
// but according to the heirarchy in the widget path. The path that matches
// the same CSS rules as a saved context is like the path of |parentStyle|
// but with an extra copy of the head (last) object appended. Setting
// |parentStyle| as the parent context provides the same inheritance of
// properties from the widget root node.
const GtkWidgetPath* parentPath = gtk_style_context_get_path(parentStyle);
const gchar* name = sGtkWidgetPathIterGetObjectName ?
sGtkWidgetPathIterGetObjectName(parentPath, -1) : nullptr;
GType objectType = gtk_widget_path_get_object_type(parentPath);
GtkStyleContext* style = CreateCSSNode(name, parentStyle, objectType);
// Start with the same classes on the new node as were on |parentStyle|.
// GTK puts no regions or junction_sides on widget root nodes, and so there
// is no need to copy these.
AddStyleClassesFromStyle(style, parentStyle);
gtk_style_context_add_class(style, aStyleClass);
return style;
}
/* GetCssNodeStyleInternal is used by Gtk >= 3.20 */
static GtkStyleContext*
GetCssNodeStyleInternal(WidgetNodeType aNodeType)
{
GtkStyleContext* style = sStyleStorage[aNodeType];
if (style)
return style;
switch (aNodeType) {
case MOZ_GTK_SCROLLBAR_CONTENTS_HORIZONTAL:
style = CreateChildCSSNode("contents",
MOZ_GTK_SCROLLBAR_HORIZONTAL);
break;
case MOZ_GTK_SCROLLBAR_TROUGH_HORIZONTAL:
style = CreateChildCSSNode(GTK_STYLE_CLASS_TROUGH,
MOZ_GTK_SCROLLBAR_CONTENTS_HORIZONTAL);
break;
case MOZ_GTK_SCROLLBAR_THUMB_HORIZONTAL:
style = CreateChildCSSNode(GTK_STYLE_CLASS_SLIDER,
MOZ_GTK_SCROLLBAR_TROUGH_HORIZONTAL);
break;
case MOZ_GTK_SCROLLBAR_CONTENTS_VERTICAL:
style = CreateChildCSSNode("contents",
MOZ_GTK_SCROLLBAR_VERTICAL);
break;
case MOZ_GTK_SCROLLBAR_TROUGH_VERTICAL:
style = CreateChildCSSNode(GTK_STYLE_CLASS_TROUGH,
MOZ_GTK_SCROLLBAR_CONTENTS_VERTICAL);
break;
case MOZ_GTK_SCROLLBAR_THUMB_VERTICAL:
style = CreateChildCSSNode(GTK_STYLE_CLASS_SLIDER,
MOZ_GTK_SCROLLBAR_TROUGH_VERTICAL);
break;
case MOZ_GTK_SCROLLBAR_BUTTON:
style = CreateChildCSSNode(GTK_STYLE_CLASS_BUTTON,
MOZ_GTK_SCROLLBAR_CONTENTS_VERTICAL);
break;
case MOZ_GTK_RADIOBUTTON:
style = CreateChildCSSNode(GTK_STYLE_CLASS_RADIO,
MOZ_GTK_RADIOBUTTON_CONTAINER);
break;
case MOZ_GTK_CHECKBUTTON:
style = CreateChildCSSNode(GTK_STYLE_CLASS_CHECK,
MOZ_GTK_CHECKBUTTON_CONTAINER);
break;
case MOZ_GTK_RADIOMENUITEM_INDICATOR:
style = CreateChildCSSNode(GTK_STYLE_CLASS_RADIO,
MOZ_GTK_RADIOMENUITEM);
break;
case MOZ_GTK_CHECKMENUITEM_INDICATOR:
style = CreateChildCSSNode(GTK_STYLE_CLASS_CHECK,
MOZ_GTK_CHECKMENUITEM);
break;
case MOZ_GTK_PROGRESS_TROUGH:
/* Progress bar background (trough) */
style = CreateChildCSSNode(GTK_STYLE_CLASS_TROUGH,
MOZ_GTK_PROGRESSBAR);
break;
case MOZ_GTK_PROGRESS_CHUNK:
style = CreateChildCSSNode("progress",
MOZ_GTK_PROGRESS_TROUGH);
break;
case MOZ_GTK_GRIPPER:
// TODO - create from CSS node
style = CreateSubStyleWithClass(MOZ_GTK_GRIPPER,
GTK_STYLE_CLASS_GRIP);
break;
case MOZ_GTK_INFO_BAR:
// TODO - create from CSS node
style = CreateSubStyleWithClass(MOZ_GTK_INFO_BAR,
GTK_STYLE_CLASS_INFO);
break;
case MOZ_GTK_SPINBUTTON_ENTRY:
// TODO - create from CSS node
style = CreateSubStyleWithClass(MOZ_GTK_SPINBUTTON,
GTK_STYLE_CLASS_ENTRY);
break;
case MOZ_GTK_SCROLLED_WINDOW:
// TODO - create from CSS node
style = CreateSubStyleWithClass(MOZ_GTK_SCROLLED_WINDOW,
GTK_STYLE_CLASS_FRAME);
break;
case MOZ_GTK_TEXT_VIEW_TEXT:
case MOZ_GTK_RESIZER:
style = CreateChildCSSNode("text", MOZ_GTK_TEXT_VIEW);
if (aNodeType == MOZ_GTK_RESIZER) {
// The "grip" class provides the correct builtin icon from
// gtk_render_handle(). The icon is drawn with shaded variants of
// the background color, and so a transparent background would lead to
// a transparent resizer. gtk_render_handle() also uses the
// background color to draw a background, and so this style otherwise
// matches what is used in GtkTextView to match the background with
// textarea elements.
GdkRGBA color;
gtk_style_context_get_background_color(style, GTK_STATE_FLAG_NORMAL,
&color);
if (color.alpha == 0.0) {
g_object_unref(style);
style = CreateStyleForWidget(gtk_text_view_new(),
MOZ_GTK_SCROLLED_WINDOW);
}
gtk_style_context_add_class(style, GTK_STYLE_CLASS_GRIP);
}
break;
case MOZ_GTK_FRAME_BORDER:
style = CreateChildCSSNode("border", MOZ_GTK_FRAME);
break;
case MOZ_GTK_TREEVIEW_VIEW:
// TODO - create from CSS node
style = CreateSubStyleWithClass(MOZ_GTK_TREEVIEW,
GTK_STYLE_CLASS_VIEW);
break;
case MOZ_GTK_TREEVIEW_EXPANDER:
// TODO - create from CSS node
style = CreateSubStyleWithClass(MOZ_GTK_TREEVIEW,
GTK_STYLE_CLASS_EXPANDER);
break;
case MOZ_GTK_SPLITTER_SEPARATOR_HORIZONTAL:
style = CreateChildCSSNode("separator",
MOZ_GTK_SPLITTER_HORIZONTAL);
break;
case MOZ_GTK_SPLITTER_SEPARATOR_VERTICAL:
style = CreateChildCSSNode("separator",
MOZ_GTK_SPLITTER_VERTICAL);
break;
case MOZ_GTK_SCALE_CONTENTS_HORIZONTAL:
style = CreateChildCSSNode("contents",
MOZ_GTK_SCALE_HORIZONTAL);
break;
case MOZ_GTK_SCALE_CONTENTS_VERTICAL:
style = CreateChildCSSNode("contents",
MOZ_GTK_SCALE_VERTICAL);
break;
case MOZ_GTK_SCALE_TROUGH_HORIZONTAL:
style = CreateChildCSSNode(GTK_STYLE_CLASS_TROUGH,
MOZ_GTK_SCALE_CONTENTS_HORIZONTAL);
break;
case MOZ_GTK_SCALE_TROUGH_VERTICAL:
style = CreateChildCSSNode(GTK_STYLE_CLASS_TROUGH,
MOZ_GTK_SCALE_CONTENTS_VERTICAL);
break;
case MOZ_GTK_SCALE_THUMB_HORIZONTAL:
style = CreateChildCSSNode(GTK_STYLE_CLASS_SLIDER,