summaryrefslogtreecommitdiff
path: root/src/ui/window.c
blob: a1fb378fe4965283ea885035628faa93f0a19396 (plain)
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
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
/* Copyright 2020 Jaakko Keränen <jaakko.keranen@iki.fi>

Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:

1. Redistributions of source code must retain the above copyright notice, this
   list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright notice,
   this list of conditions and the following disclaimer in the documentation
   and/or other materials provided with the distribution.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */

#include "window.h"

#include "labelwidget.h"
#include "inputwidget.h"
#include "documentwidget.h"
#include "sidebarwidget.h"
#include "lookupwidget.h"
#include "bookmarks.h"
#include "embedded.h"
#include "command.h"
#include "paint.h"
#include "util.h"
#include "keys.h"
#include "../app.h"
#include "../visited.h"
#include "../gmcerts.h"
#include "../gmutil.h"
#include "../visited.h"
#if defined (iPlatformMsys)
#   include "../win32.h"
#endif
#if defined (iPlatformApple) && !defined (iPlatformIOS)
#   include "macos.h"
#endif

#include <the_Foundation/file.h>
#include <the_Foundation/path.h>
#include <SDL_hints.h>
#include <SDL_timer.h>
#include <SDL_syswm.h>

#define STB_IMAGE_IMPLEMENTATION
#include "stb_image.h"

static iWindow *theWindow_ = NULL;

#if defined (iPlatformApple)
static float initialUiScale_ = 1.0f;
#else
static float initialUiScale_ = 1.1f;
#endif

iDefineTypeConstructionArgs(Window, (iRect rect), rect)

static iBool handleRootCommands_(iWidget *root, const char *cmd) {
    iUnused(root);
    if (equal_Command(cmd, "menu.open")) {
        iWidget *button = pointer_Command(cmd);
        iWidget *menu = findChild_Widget(button, "menu");
        iAssert(menu);
        if (!isVisible_Widget(menu)) {
            openMenu_Widget(menu, init_I2(0, button->rect.size.y));
        }
        else {
            closeMenu_Widget(menu);
        }
        return iTrue;
    }
    else if (equal_Command(cmd, "focus.set")) {
        setFocus_Widget(findWidget_App(cstr_Rangecc(range_Command(cmd, "id"))));
        return iTrue;
    }
    else if (equal_Command(cmd, "window.focus.lost")) {
        setFocus_Widget(NULL);
        return iFalse;
    }
    else if (handleCommand_App(cmd)) {
        return iTrue;
    }
    return iFalse;
}

#if defined (iPlatformApple)
#  define iHaveNativeMenus
#endif

#if !defined (iHaveNativeMenus)
/* TODO: Submenus wouldn't hurt here. */
static const iMenuItem navMenuItems_[] = {
    { "New Tab", 't', KMOD_PRIMARY, "tabs.new" },
    { "Open Location...", SDLK_l, KMOD_PRIMARY, "navigate.focus" },
    { "---", 0, 0, NULL },
    { "Save to Downloads", SDLK_s, KMOD_PRIMARY, "document.save" },
    { "Copy Source Text", SDLK_c, KMOD_PRIMARY, "copy" },
    { "---", 0, 0, NULL },
    { "Toggle Left Sidebar", SDLK_l, KMOD_PRIMARY | KMOD_SHIFT, "sidebar.toggle" },
    { "Toggle Right Sidebar", SDLK_p, KMOD_PRIMARY | KMOD_SHIFT, "sidebar2.toggle" },
    { "Zoom In", SDLK_EQUALS, KMOD_PRIMARY, "zoom.delta arg:10" },
    { "Zoom Out", SDLK_MINUS, KMOD_PRIMARY, "zoom.delta arg:-10" },
    { "Reset Zoom", SDLK_0, KMOD_PRIMARY, "zoom.set arg:100" },
    { "---", 0, 0, NULL },
    { "List All Bookmarks", 0, 0, "!open url:about:bookmarks" },
    { "List Bookmarks by Tag", 0, 0, "!open url:about:bookmarks?tags" },
    { "List Bookmarks by Creation Time", 0, 0, "!open url:about:bookmarks?created" },
    { "---", 0, 0, NULL },
    { "Show Feed Entries", 0, 0, "!open url:about:feeds" },
    { "---", 0, 0, NULL },
    { "Preferences...", SDLK_COMMA, KMOD_PRIMARY, "preferences" },
    { "Help", SDLK_F1, 0, "!open url:about:help" },
    { "Release Notes", 0, 0, "!open url:about:version" },
    { "---", 0, 0, NULL },
    { "Quit Lagrange", 'q', KMOD_PRIMARY, "quit" }
};
#endif

#if defined (iHaveNativeMenus)
/* Using native menus. */
static const iMenuItem fileMenuItems_[] = {
    { "New Tab", SDLK_t, KMOD_PRIMARY, "tabs.new" },
    { "Open Location...", SDLK_l, KMOD_PRIMARY, "navigate.focus" },
    { "---", 0, 0, NULL },
    { "Save to Downloads", SDLK_s, KMOD_PRIMARY, "document.save" },
};

static const iMenuItem editMenuItems_[] = {
    { "Copy", SDLK_c, KMOD_PRIMARY, "copy" },
    { "Copy Link to Page", SDLK_c, KMOD_PRIMARY | KMOD_SHIFT, "document.copylink" },
    { "---", 0, 0, NULL },
    { "Find", SDLK_f, KMOD_PRIMARY, "focus.set id:find.input" },
};

static const iMenuItem viewMenuItems_[] = {
    { "Show Bookmarks", '1', KMOD_PRIMARY, "sidebar.mode arg:0 toggle:1" },
    { "Show Feeds", '2', KMOD_PRIMARY, "sidebar.mode arg:1 toggle:1" },
    { "Show History", '3', KMOD_PRIMARY, "sidebar.mode arg:2 toggle:1" },
    { "Show Identities", '4', KMOD_PRIMARY, "sidebar.mode arg:3 toggle:1" },
    { "Show Page Outline", '5', KMOD_PRIMARY, "sidebar.mode arg:4 toggle:1" },
    { "Toggle Left Sidebar", SDLK_l, KMOD_PRIMARY | KMOD_SHIFT, "sidebar.toggle" },
    { "Toggle Right Sidebar", SDLK_p, KMOD_PRIMARY | KMOD_SHIFT, "sidebar2.toggle" },
    { "---", 0, 0, NULL },
    { "Go Back", SDLK_LEFTBRACKET, KMOD_PRIMARY, "navigate.back" },
    { "Go Forward", SDLK_RIGHTBRACKET, KMOD_PRIMARY, "navigate.forward" },
    { "Go to Parent", navigateParent_KeyShortcut, "navigate.parent" },
    { "Go to Root", navigateRoot_KeyShortcut, "navigate.root" },
    { "Reload Page", reload_KeyShortcut, "navigate.reload" },
    { "---", 0, 0, NULL },
    { "Zoom In", SDLK_EQUALS, KMOD_PRIMARY, "zoom.delta arg:10" },
    { "Zoom Out", SDLK_MINUS, KMOD_PRIMARY, "zoom.delta arg:-10" },
    { "Reset Zoom", SDLK_0, KMOD_PRIMARY, "zoom.set arg:100" },
};

static iMenuItem bookmarksMenuItems_[] = {
    { "Bookmark This Page...", SDLK_d, KMOD_PRIMARY, "bookmark.add" },
    { "Subscribe to This Page...", subscribeToPage_KeyModifier, "feeds.subscribe" },
    { "---", 0, 0, NULL },
    { "Import All Links on Page...", 0, 0, "bookmark.links confirm:1" },
    { "---", 0, 0, NULL },
    { "List All", 0, 0, "open url:about:bookmarks" },
    { "List by Tag", 0, 0, "open url:about:bookmarks?tags" },
    { "List by Creation Time", 0, 0, "open url:about:bookmarks?created" },
    { "Show Feed Entries", 0, 0, "open url:about:feeds" },
    { "---", 0, 0, NULL },
    { "Refresh Remote Bookmarks", 0, 0, "bookmarks.reload.remote" },
    { "Refresh Feeds", SDLK_r, KMOD_PRIMARY | KMOD_SHIFT, "feeds.refresh" },
};

static const iMenuItem identityMenuItems_[] = {
    { "New Identity...", SDLK_n, KMOD_PRIMARY | KMOD_SHIFT, "ident.new" },
    { "---", 0, 0, NULL },
    { "Import...", SDLK_i, KMOD_PRIMARY | KMOD_SHIFT, "ident.import" },
};

static const iMenuItem helpMenuItems_[] = {
    { "Help", 0, 0, "!open url:about:help" },
    { "Release Notes", 0, 0, "!open url:about:version" },
};
#endif

static const iMenuItem identityButtonMenuItems_[] = {
    { "No Active Identity", 0, 0, "ident.showactive" },
    { "---", 0, 0, NULL },
#if !defined (iHaveNativeMenus)
    { "New Identity...", SDLK_n, KMOD_PRIMARY | KMOD_SHIFT, "ident.new" },
    { "Import...", SDLK_i, KMOD_PRIMARY | KMOD_SHIFT, "ident.import" },
    { "---", 0, 0, NULL },
    { "Show Identities", '4', KMOD_PRIMARY, "sidebar.mode arg:3 show:1" },
#else
    { "New Identity...", 0, 0, "ident.new" },
    { "---", 0, 0, NULL },
    { "Show Identities", 0, 0, "sidebar.mode arg:3 show:1" },
#endif
};

static const char *reloadCStr_ = "\U0001f503";

/* TODO: A preference for these, maybe? */
static const char *stopSeqCStr_[] = {
    /* Corners */
    uiTextCaution_ColorEscape "\U0000230c",
    uiTextCaution_ColorEscape "\U0000230d",
    uiTextCaution_ColorEscape "\U0000230f",
    uiTextCaution_ColorEscape "\U0000230e",
#if 0
    /* Rotating arrow */
    uiTextCaution_ColorEscape "\U00002b62",
    uiTextCaution_ColorEscape "\U00002b68",
    uiTextCaution_ColorEscape "\U00002b63",
    uiTextCaution_ColorEscape "\U00002b69",
    uiTextCaution_ColorEscape "\U00002b60",
    uiTextCaution_ColorEscape "\U00002b66",
    uiTextCaution_ColorEscape "\U00002b61",
    uiTextCaution_ColorEscape "\U00002b67",
#endif
#if 0
    /* Star */
    uiTextCaution_ColorEscape "\u2bcc",
    uiTextCaution_ColorEscape "\u2bcd",
    uiTextCaution_ColorEscape "\u2bcc",
    uiTextCaution_ColorEscape "\u2bcd",
    uiTextCaution_ColorEscape "\u2bcc",
    uiTextCaution_ColorEscape "\u2bcd",
    uiTextCaution_ColorEscape "\u2bce",
    uiTextCaution_ColorEscape "\u2bcf",
    uiTextCaution_ColorEscape "\u2bce",
    uiTextCaution_ColorEscape "\u2bcf",
    uiTextCaution_ColorEscape "\u2bce",
    uiTextCaution_ColorEscape "\u2bcf",
#endif
#if 0
    /* Pulsing circle */
    uiTextCaution_ColorEscape "\U0001f785",
    uiTextCaution_ColorEscape "\U0001f786",
    uiTextCaution_ColorEscape "\U0001f787",
    uiTextCaution_ColorEscape "\U0001f788",
    uiTextCaution_ColorEscape "\U0001f789",
    uiTextCaution_ColorEscape "\U0001f789",
    uiTextCaution_ColorEscape "\U0001f788",
    uiTextCaution_ColorEscape "\U0001f787",
    uiTextCaution_ColorEscape "\U0001f786",
#endif
#if 0
    /* Dancing dots */
    uiTextCaution_ColorEscape "\U0001fb00",
    uiTextCaution_ColorEscape "\U0001fb01",
    uiTextCaution_ColorEscape "\U0001fb07",
    uiTextCaution_ColorEscape "\U0001fb1e",
    uiTextCaution_ColorEscape "\U0001fb0f",
    uiTextCaution_ColorEscape "\U0001fb03",
    uiTextCaution_ColorEscape "\U0001fb00",
    uiTextCaution_ColorEscape "\U0001fb01",
    uiTextCaution_ColorEscape "\U0001fb07",
    uiTextCaution_ColorEscape "\U0001fb1e",
    uiTextCaution_ColorEscape "\U0001fb0f",
    uiTextCaution_ColorEscape "\U0001fb03",

    uiTextCaution_ColorEscape "\U0001fb7d",
    uiTextCaution_ColorEscape "\U0001fb7e",
    uiTextCaution_ColorEscape "\U0001fb7f",
    uiTextCaution_ColorEscape "\U0001fb7c",
    uiTextCaution_ColorEscape "\U0001fb7d",
    uiTextCaution_ColorEscape "\U0001fb7e",
    uiTextCaution_ColorEscape "\U0001fb7f",
    uiTextCaution_ColorEscape "\U0001fb7c",

    uiTextCaution_ColorEscape "\U0001fb00",
    uiTextCaution_ColorEscape "\U0001fb01",
    uiTextCaution_ColorEscape "\U0001fb07",
    uiTextCaution_ColorEscape "\U0001fb03",
    uiTextCaution_ColorEscape "\U0001fb0f",
    uiTextCaution_ColorEscape "\U0001fb1e",
    uiTextCaution_ColorEscape "\U0001fb07",
    uiTextCaution_ColorEscape "\U0001fb03",
#endif
};

static void updateNavBarIdentity_(iWidget *navBar) {
    const iGmIdentity *ident =
        identityForUrl_GmCerts(certs_App(), url_DocumentWidget(document_App()));
    iWidget *button = findChild_Widget(navBar, "navbar.ident");
    setFlags_Widget(button, selected_WidgetFlag, ident != NULL);
    /* Update menu. */
    iLabelWidget *idItem = child_Widget(findChild_Widget(button, "menu"), 0);
    setTextCStr_LabelWidget(
        idItem,
        ident ? format_CStr(uiTextAction_ColorEscape "%s",
                            cstrCollect_String(subject_TlsCertificate(ident->cert)))
              : "No Active Identity");
    setFlags_Widget(as_Widget(idItem), disabled_WidgetFlag, !ident);
}

static const int loadAnimIntervalMs_ = 133;
static int       loadAnimIndex_      = 0;

static const char *loadAnimationCStr_(void) {
    return stopSeqCStr_[loadAnimIndex_ % iElemCount(stopSeqCStr_)];
}

static uint32_t updateReloadAnimation_Window_(uint32_t interval, void *window) {
    iUnused(window);
    loadAnimIndex_++;
    postCommand_App("window.reload.update");
    return interval;
}

static void setReloadLabel_Window_(iWindow *d, iBool animating) {
    updateTextCStr_LabelWidget(findChild_Widget(d->root, "reload"),
                               animating ? loadAnimationCStr_() : reloadCStr_);
}

static void checkLoadAnimation_Window_(iWindow *d) {
    const iBool isOngoing = isRequestOngoing_DocumentWidget(document_App());
    if (isOngoing && !d->loadAnimTimer) {
        d->loadAnimTimer = SDL_AddTimer(loadAnimIntervalMs_, updateReloadAnimation_Window_, d);
    }
    else if (!isOngoing && d->loadAnimTimer) {
        SDL_RemoveTimer(d->loadAnimTimer);
        d->loadAnimTimer = 0;
    }
    setReloadLabel_Window_(d, isOngoing);
}

static iBool handleNavBarCommands_(iWidget *navBar, const char *cmd) {
    if (equal_Command(cmd, "window.resized")) {
        const iBool isNarrow = width_Rect(bounds_Widget(navBar)) / gap_UI < 140;
        if (isNarrow ^ ((flags_Widget(navBar) & tight_WidgetFlag) != 0)) {
            setFlags_Widget(navBar, tight_WidgetFlag, isNarrow);
            iForEach(ObjectList, i, navBar->children) {
                iWidget *child = as_Widget(i.object);
                setFlags_Widget(
                    child, tight_WidgetFlag, isNarrow || !cmp_String(id_Widget(child), "lock"));
                if (isInstance_Object(i.object, &Class_LabelWidget)) {
                    iLabelWidget *label = i.object;
                    updateSize_LabelWidget(label);
                }
            }
        }
        arrange_Widget(navBar);
        refresh_Widget(navBar);
        postCommand_Widget(navBar, "layout.changed id:navbar");
        return iFalse;
    }
    else if (equal_Command(cmd, "window.reload.update")) {
        checkLoadAnimation_Window_(get_Window());
        return iTrue;
    }
    else if (equal_Command(cmd, "navigate.focus")) {
        iWidget *url = findChild_Widget(navBar, "url");
        if (focus_Widget() != url) {
            setFocus_Widget(findChild_Widget(navBar, "url"));
        }
        else {
            selectAll_InputWidget((iInputWidget *) url);
        }
        return iTrue;
    }
    else if (equal_Command(cmd, "input.edited")) {
        iAnyObject *url = findChild_Widget(navBar, "url");
        if (pointer_Command(cmd) == url) {
            submit_LookupWidget(findWidget_App("lookup"), text_InputWidget(url));
            return iTrue;
        }
    }
    else if (startsWith_CStr(cmd, "input.ended id:url ")) {
        iInputWidget *url = findChild_Widget(navBar, "url");
        if (isEmpty_String(text_InputWidget(url))) {
            /* User entered nothing; restore the current URL. */
            setText_InputWidget(url, url_DocumentWidget(document_App()));
            return iTrue;
        }
        if (arg_Command(cmd) && argLabel_Command(cmd, "enter") &&
            !isFocused_Widget(findWidget_App("lookup"))) {
            iString *newUrl = copy_String(text_InputWidget(url));
            trim_String(newUrl);
            postCommandf_App(
                "open url:%s",
                cstr_String(absoluteUrl_String(&iStringLiteral(""), collect_String(newUrl))));
            return iTrue;
        }
    }
    else if (startsWith_CStr(cmd, "document.")) {
        /* React to the current document only. */
        if (document_Command(cmd) == document_App()) {
            if (equal_Command(cmd, "document.changed")) {
                iInputWidget *url = findWidget_App("url");
                const iString *urlStr = collect_String(suffix_Command(cmd, "url"));
                visitUrl_Visited(visited_App(), urlStr, 0);
                postCommand_App("visited.changed"); /* sidebar will update */
                setText_InputWidget(url, urlStr);
                checkLoadAnimation_Window_(get_Window());
                updateNavBarIdentity_(navBar);
                /* Icon updates should be limited to automatically chosen icons if the user
                   is allowed to pick their own in the future. */
                if (updateBookmarkIcon_Bookmarks(
                    bookmarks_App(),
                    urlStr,
                        siteIcon_GmDocument(document_DocumentWidget(document_App())))) {
                    postCommand_App("bookmarks.changed");
                }
                return iFalse;
            }
            else if (equal_Command(cmd, "document.request.cancelled")) {
                checkLoadAnimation_Window_(get_Window());
                return iFalse;
            }
            else if (equal_Command(cmd, "document.request.started")) {
                iInputWidget *url = findChild_Widget(navBar, "url");
                setTextCStr_InputWidget(url, suffixPtr_Command(cmd, "url"));
                checkLoadAnimation_Window_(get_Window());
                return iFalse;
            }
        }
    }
    else if (equal_Command(cmd, "tabs.changed")) {
        /* Update navbar according to the current tab. */
        iDocumentWidget *doc = document_App();
        if (doc) {
            setText_InputWidget(findChild_Widget(navBar, "url"), url_DocumentWidget(doc));
            checkLoadAnimation_Window_(get_Window());
            updateNavBarIdentity_(navBar);
        }
        setFocus_Widget(NULL);
    }
    else if (equal_Command(cmd, "mouse.clicked") && arg_Command(cmd)) {
        iWidget *widget = pointer_Command(cmd);
        iWidget *menu = findWidget_App("doctabs.menu");
        if (isTabButton_Widget(widget) && !isVisible_Widget(menu)) {
            iWidget *tabs = findWidget_App("doctabs");
            showTabPage_Widget(tabs,
                               tabPage_Widget(tabs, childIndex_Widget(widget->parent, widget)));
            openMenu_Widget(menu, coord_Command(cmd));
        }
    }
    else if (equal_Command(cmd, "navigate.reload")) {
        iDocumentWidget *doc = document_Command(cmd);
        if (isRequestOngoing_DocumentWidget(doc)) {
            postCommand_App("document.stop");
        }
        else {
            postCommand_App("document.reload");
        }
        return iTrue;
    }
    return iFalse;
}

static iBool handleSearchBarCommands_(iWidget *searchBar, const char *cmd) {
    if (equal_Command(cmd, "input.ended") &&
        equal_Rangecc(range_Command(cmd, "id"), "find.input")) {
        iInputWidget *input = findChild_Widget(searchBar, "find.input");
        if (arg_Command(cmd) && argLabel_Command(cmd, "enter") && isVisible_Widget(input)) {
            postCommand_App("find.next");
            /* Keep focus when pressing Enter. */
            if (!isEmpty_String(text_InputWidget(input))) {
                postCommand_App("focus.set id:find.input");
            }
        }
        else {
            postCommand_App("find.clearmark");
        }
        return iTrue;
    }
    else if (equal_Command(cmd, "focus.gained")) {
        if (pointer_Command(cmd) == findChild_Widget(searchBar, "find.input")) {
            if (!isVisible_Widget(searchBar)) {
                setFlags_Widget(searchBar, hidden_WidgetFlag | disabled_WidgetFlag, iFalse);
                arrange_Widget(get_Window()->root);
                postRefresh_App();
            }
        }
    }
    else if (equal_Command(cmd, "find.close")) {
        if (isVisible_Widget(searchBar)) {
            setFlags_Widget(searchBar, hidden_WidgetFlag | disabled_WidgetFlag, iTrue);
            arrange_Widget(searchBar->parent);
            if (isFocused_Widget(findChild_Widget(searchBar, "find.input"))) {
                setFocus_Widget(NULL);
            }
            refresh_Widget(searchBar->parent);
        }
        return iTrue;
    }
    return iFalse;
}

static void setupUserInterface_Window(iWindow *d) {
    /* Children of root cover the entire window. */
    setFlags_Widget(d->root, resizeChildren_WidgetFlag, iTrue);
    setCommandHandler_Widget(d->root, handleRootCommands_);

    iWidget *div = makeVDiv_Widget();
    setId_Widget(div, "navdiv");
    addChild_Widget(d->root, iClob(div));

    /* Navigation bar. */ {
        iWidget *navBar = new_Widget();
        setId_Widget(navBar, "navbar");
        /*setPadding_Widget(navBar, gap_UI / 2, 0, gap_UI / 2, 0);*/
        setPadding_Widget(navBar, gap_UI, gap_UI / 2, gap_UI, gap_UI / 2);
        setFlags_Widget(navBar,
                        arrangeHeight_WidgetFlag | resizeChildren_WidgetFlag |
                            arrangeHorizontal_WidgetFlag,
                        iTrue);
        addChild_Widget(div, iClob(navBar));
        setBackgroundColor_Widget(navBar, uiBackground_ColorId);
        setCommandHandler_Widget(navBar, handleNavBarCommands_);
        addChild_Widget(navBar, iClob(newIcon_LabelWidget("\U0001f870", 0, 0, "navigate.back")));
        addChild_Widget(navBar, iClob(newIcon_LabelWidget("\U0001f872", 0, 0, "navigate.forward")));
        iLabelWidget *idMenu = makeMenuButton_LabelWidget(
            "\U0001f464", identityButtonMenuItems_, iElemCount(identityButtonMenuItems_));
        setAlignVisually_LabelWidget(idMenu, iTrue);
        addChild_Widget(navBar, iClob(idMenu));
        setId_Widget(as_Widget(idMenu), "navbar.ident");
        iLabelWidget *lock =
            addChildFlags_Widget(navBar,
                                 iClob(newIcon_LabelWidget("\U0001f513", SDLK_i, KMOD_PRIMARY, "document.info")),
                                 frameless_WidgetFlag | tight_WidgetFlag);
        setId_Widget(as_Widget(lock), "navbar.lock");
        setFont_LabelWidget(lock, defaultSymbols_FontId);
        updateTextCStr_LabelWidget(lock, "\U0001f512");
        /* URL input field. */ {
            iInputWidget *url = new_InputWidget(0);
            setSelectAllOnFocus_InputWidget(url, iTrue);
            setId_Widget(as_Widget(url), "url");
            setUrlContent_InputWidget(url, iTrue);
            setNotifyEdits_InputWidget(url, iTrue);
            setTextCStr_InputWidget(url, "gemini://");
            addChildFlags_Widget(navBar, iClob(url), expand_WidgetFlag);
            setPadding_Widget(as_Widget(url),0, 0, gap_UI * 1, 0);
            /* Feeds refresh indicator is inside the input field. */ {
                iLabelWidget *fprog = new_LabelWidget(uiTextCaution_ColorEscape
                                                      "\u2605 Refreshing Feeds...", NULL);
                setId_Widget(as_Widget(fprog), "feeds.progress");
                setBackgroundColor_Widget(as_Widget(fprog), uiBackground_ColorId);
                setAlignVisually_LabelWidget(fprog, iTrue);
                shrink_Rect(&as_Widget(fprog)->rect, init_I2(0, gap_UI));
                addChildFlags_Widget(as_Widget(url),
                                     iClob(fprog),
                                     moveToParentRightEdge_WidgetFlag | hidden_WidgetFlag);
            }
            /* Download progress indicator is also inside the input field, but hidden normally.
               TODO: It shouldn't overlap the feeds indicator... */ {
                iLabelWidget *progress = new_LabelWidget(uiTextCaution_ColorEscape "00.000 MB", NULL);
                setId_Widget(as_Widget(progress), "document.progress");
                setBackgroundColor_Widget(as_Widget(progress), uiBackground_ColorId);
                setAlignVisually_LabelWidget(progress, iTrue);
                shrink_Rect(&as_Widget(progress)->rect, init_I2(0, gap_UI));
                addChildFlags_Widget(as_Widget(url),
                                     iClob(progress),
                                     moveToParentRightEdge_WidgetFlag);
            }
        }
        setId_Widget(addChild_Widget(
                         navBar, iClob(newIcon_LabelWidget(reloadCStr_, 0, 0, "navigate.reload"))),
                     "reload");
        addChild_Widget(navBar,
                        iClob(newIcon_LabelWidget(
                            "\U0001f3e0", SDLK_h, KMOD_PRIMARY | KMOD_SHIFT, "navigate.home")));
#if !defined (iHaveNativeMenus)
        iLabelWidget *navMenu =
            makeMenuButton_LabelWidget("\U0001d362", navMenuItems_, iElemCount(navMenuItems_));
        setAlignVisually_LabelWidget(navMenu, iTrue);
        addChild_Widget(navBar, iClob(navMenu));
#else
        insertMenuItems_MacOS("File", 1, fileMenuItems_, iElemCount(fileMenuItems_));
        insertMenuItems_MacOS("Edit", 2, editMenuItems_, iElemCount(editMenuItems_));
        insertMenuItems_MacOS("View", 3, viewMenuItems_, iElemCount(viewMenuItems_));
        insertMenuItems_MacOS("Bookmarks", 4, bookmarksMenuItems_, iElemCount(bookmarksMenuItems_));
        insertMenuItems_MacOS("Identity", 5, identityMenuItems_, iElemCount(identityMenuItems_));
        insertMenuItems_MacOS("Help", 7, helpMenuItems_, iElemCount(helpMenuItems_));
#endif
    }
    /* Tab bar. */ {
        iWidget *tabBar = makeTabs_Widget(div);
        setId_Widget(tabBar, "doctabs");
        setFlags_Widget(tabBar, expand_WidgetFlag, iTrue);
        setBackgroundColor_Widget(tabBar, uiBackground_ColorId);
        appendTabPage_Widget(tabBar, iClob(new_DocumentWidget()), "Document", 0, 0);
        iWidget *buttons = findChild_Widget(tabBar, "tabs.buttons");
        setFlags_Widget(buttons, collapse_WidgetFlag | hidden_WidgetFlag, iTrue);
        setId_Widget(
            addChild_Widget(buttons, iClob(newIcon_LabelWidget("\u2795", 0, 0, "tabs.new"))),
            "newtab");
    }
    /* Side bars. */ {
        iWidget *content = findChild_Widget(d->root, "tabs.content");
        iSidebarWidget *sidebar1 = new_SidebarWidget(left_SideBarSide);
        addChildPos_Widget(content, iClob(sidebar1), front_WidgetAddPos);
        iSidebarWidget *sidebar2 = new_SidebarWidget(right_SideBarSide);
        addChildPos_Widget(content, iClob(sidebar2), back_WidgetAddPos);
    }
    /* Lookup results. */ {
        iLookupWidget *lookup = new_LookupWidget();
        addChildFlags_Widget(div, iClob(lookup), fixedPosition_WidgetFlag | hidden_WidgetFlag);
    }
    /* Search bar. */ {
        iWidget *searchBar = new_Widget();
        setId_Widget(searchBar, "search");
        setFlags_Widget(searchBar,
                        hidden_WidgetFlag | disabled_WidgetFlag | collapse_WidgetFlag |
                            arrangeHeight_WidgetFlag | resizeChildren_WidgetFlag |
                            arrangeHorizontal_WidgetFlag,
                        iTrue);
        addChild_Widget(div, iClob(searchBar));
        setBackgroundColor_Widget(searchBar, uiBackground_ColorId);
        setCommandHandler_Widget(searchBar, handleSearchBarCommands_);
        addChildFlags_Widget(
            searchBar, iClob(new_LabelWidget("\U0001f50d Text", NULL)), frameless_WidgetFlag);
        iInputWidget *input = new_InputWidget(0);
        setSelectAllOnFocus_InputWidget(input, iTrue);
        setEatEscape_InputWidget(input, iFalse); /* unfocus and close with one keypress */
        setId_Widget(addChildFlags_Widget(searchBar, iClob(input), expand_WidgetFlag),
                     "find.input");
        addChild_Widget(searchBar, iClob(newIcon_LabelWidget("  \u2b9f  ", 'g', KMOD_PRIMARY, "find.next")));
        addChild_Widget(searchBar, iClob(newIcon_LabelWidget("  \u2b9d  ", 'g', KMOD_PRIMARY | KMOD_SHIFT, "find.prev")));
        addChild_Widget(searchBar, iClob(newIcon_LabelWidget("\u2a2f", SDLK_ESCAPE, 0, "find.close")));
    }
    iWidget *tabsMenu = makeMenu_Widget(d->root,
                                        (iMenuItem[]){
                                            { "Close Tab", 0, 0, "tabs.close" },
                                            { "Duplicate Tab", 0, 0, "tabs.new duplicate:1" },
                                            { "---", 0, 0, NULL },
                                            { "Close Other Tabs", 0, 0, "tabs.close toleft:1 toright:1" },
                                            { "Close Tabs To Left", 0, 0, "tabs.close toleft:1" },
                                            { "Close Tabs To Right", 0, 0, "tabs.close toright:1" },
                                        },
                                        6);
    setId_Widget(tabsMenu, "doctabs.menu");
    /* Global keyboard shortcuts. */ {
        addAction_Widget(d->root, 'l', KMOD_PRIMARY, "navigate.focus");
        addAction_Widget(d->root, 'f', KMOD_PRIMARY, "focus.set id:find.input");
        addAction_Widget(d->root, '1', KMOD_PRIMARY, "sidebar.mode arg:0 toggle:1");
        addAction_Widget(d->root, '2', KMOD_PRIMARY, "sidebar.mode arg:1 toggle:1");
        addAction_Widget(d->root, '3', KMOD_PRIMARY, "sidebar.mode arg:2 toggle:1");
        addAction_Widget(d->root, '4', KMOD_PRIMARY, "sidebar.mode arg:3 toggle:1");
        addAction_Widget(d->root, '5', KMOD_PRIMARY, "sidebar.mode arg:4 toggle:1");
        addAction_Widget(d->root, '1', rightSidebar_KeyModifier, "sidebar2.mode arg:0 toggle:1");
        addAction_Widget(d->root, '2', rightSidebar_KeyModifier, "sidebar2.mode arg:1 toggle:1");
        addAction_Widget(d->root, '3', rightSidebar_KeyModifier, "sidebar2.mode arg:2 toggle:1");
        addAction_Widget(d->root, '4', rightSidebar_KeyModifier, "sidebar2.mode arg:3 toggle:1");
        addAction_Widget(d->root, '5', rightSidebar_KeyModifier, "sidebar2.mode arg:4 toggle:1");
    }
}

static void updateRootSize_Window_(iWindow *d, iBool notifyAlways) {
    iInt2 *size = &d->root->rect.size;
    const iInt2 oldSize = *size;
    SDL_GetRendererOutputSize(d->render, &size->x, &size->y);
    if (notifyAlways || !isEqual_I2(oldSize, *size)) {
        arrange_Widget(d->root);
        postCommandf_App("window.resized width:%d height:%d", size->x, size->y);
        postRefresh_App();
    }
}

void drawWhileResizing_Window(iWindow *d, int w, int h) {
    /* This is called while a window resize is in progress, so we can be pretty confident
       the size has actually changed. */
    d->root->rect.size = coord_Window(d, w, h);
    arrange_Widget(d->root);
    draw_Window(d);
}

static float pixelRatio_Window_(const iWindow *d) {
#if defined (iPlatformMsys)
    iUnused(d);
    return desktopDPI_Win32();
#else
    int dx, x;
    SDL_GetRendererOutputSize(d->render, &dx, NULL);
    SDL_GetWindowSize(d->win, &x, NULL);
    return (float) dx / (float) x;
#endif
}

static void drawBlank_Window_(iWindow *d) {
    const iColor bg = get_Color(uiBackground_ColorId);
    SDL_SetRenderDrawColor(d->render, bg.r, bg.g, bg.b, 255);
    SDL_RenderClear(d->render);
    SDL_RenderPresent(d->render);
}

iBool create_Window_(iWindow *d, iRect rect, uint32_t flags) {
    flags |= SDL_WINDOW_RESIZABLE | SDL_WINDOW_ALLOW_HIGHDPI | SDL_WINDOW_HIDDEN;
    if (SDL_CreateWindowAndRenderer(
            width_Rect(rect), height_Rect(rect), flags, &d->win, &d->render)) {
        return iFalse;
    }
    return iTrue;
}

void init_Window(iWindow *d, iRect rect) {
    theWindow_ = d;
    iZap(d->cursors);
    d->initialPos = rect.pos;
    d->lastRect = rect;
    d->pendingCursor = NULL;
    d->isDrawFrozen = iTrue;
    d->isMouseInside = iTrue;
    d->focusGainedAt = 0;
    uint32_t flags = 0;
#if defined (iPlatformApple)
    SDL_SetHint(SDL_HINT_RENDER_DRIVER, shouldDefaultToMetalRenderer_MacOS() ? "metal" : "opengl");
#else
    flags |= SDL_WINDOW_OPENGL;
#endif
    SDL_SetHint(SDL_HINT_RENDER_VSYNC, "1");
    /* First try SDL's default renderer that should be the best option. */
    if (forceSoftwareRender_App() || !create_Window_(d, rect, flags)) {
        /* No luck, maybe software only? This should always work as long as there is a display. */
        SDL_SetHint(SDL_HINT_RENDER_DRIVER, "software");
        if (!create_Window_(d, rect, 0)) {
            fprintf(stderr, "Error when creating window: %s\n", SDL_GetError());
            exit(-2);
        }
    }
    if (left_Rect(rect) >= 0 || top_Rect(rect) >= 0) {
        SDL_SetWindowPosition(d->win, left_Rect(rect), top_Rect(rect));
    }
    const iInt2 minSize = init_I2(425, 300);
    SDL_SetWindowMinimumSize(d->win, minSize.x, minSize.y);
    SDL_SetWindowTitle(d->win, "Lagrange");
    /* Some info. */ {
        SDL_RendererInfo info;
        SDL_GetRendererInfo(d->render, &info);
        printf("[window] renderer: %s%s\n", info.name,
               info.flags & SDL_RENDERER_ACCELERATED ? " (accelerated)" : "");
#if !defined (NDEBUG)
        printf("[window] max texture size: %d x %d\n",
               info.max_texture_width,
               info.max_texture_height);
        for (size_t i = 0; i < info.num_texture_formats; ++i) {
            printf("[window] supported texture format: %s\n", SDL_GetPixelFormatName(
                       info.texture_formats[i]));
        }
#endif
    }
    drawBlank_Window_(d);
    d->uiScale = initialUiScale_;
    d->pixelRatio = pixelRatio_Window_(d);
    setPixelRatio_Metrics(d->pixelRatio * d->uiScale);
#if defined (iPlatformMsys)
    SDL_SetWindowMinimumSize(d->win, minSize.x * d->pixelRatio, minSize.y * d->pixelRatio);
    useExecutableIconResource_SDLWindow(d->win);
#endif
#if defined (iPlatformLinux)
    /* Load the window icon. */ {
        int w, h, num;
        const iBlock *icon = &imageLagrange64_Embedded;
        stbi_uc *pixels = stbi_load_from_memory(constData_Block(icon),
                                                size_Block(icon),
                                                &w,
                                                &h,
                                                &num,
                                                STBI_rgb_alpha);
        SDL_Surface *surf =
            SDL_CreateRGBSurfaceWithFormatFrom(pixels, w, h, 32, 4 * w, SDL_PIXELFORMAT_RGBA32);
        SDL_SetWindowIcon(d->win, surf);
        SDL_FreeSurface(surf);
        stbi_image_free(pixels);
    }
#endif
    d->root = new_Widget();
    d->presentTime = 0.0;
    d->frameTime = SDL_GetTicks();
    d->loadAnimTimer = 0;
    setId_Widget(d->root, "root");
    init_Text(d->render);
    setupUserInterface_Window(d);
    postCommand_App("bindings.changed"); /* update from bindings */
    updateRootSize_Window_(d, iFalse);
}

void deinit_Window(iWindow *d) {
    iRecycle();
    if (theWindow_ == d) {
        theWindow_ = NULL;
    }
    iForIndices(i, d->cursors) {
        if (d->cursors[i]) {
            SDL_FreeCursor(d->cursors[i]);
        }
    }
    iReleasePtr(&d->root);
    deinit_Text();
    SDL_DestroyRenderer(d->render);
    SDL_DestroyWindow(d->win);
}

SDL_Renderer *renderer_Window(const iWindow *d) {
    return d->render;
}

static iBool isMaximized_Window_(const iWindow *d) {
#if !defined (iPlatformApple)
    return (SDL_GetWindowFlags(d->win) & (SDL_WINDOW_MINIMIZED | SDL_WINDOW_MAXIMIZED)) != 0;
#else
    iUnused(d);
    return iFalse; /* There is fullscreen mode but that is not handled at the moment. */
#endif
}

static iBool handleWindowEvent_Window_(iWindow *d, const SDL_WindowEvent *ev) {
    switch (ev->event) {
        case SDL_WINDOWEVENT_EXPOSED:
            /* Since we are manually controlling when to redraw the window, we are responsible
               for ensuring that window contents get redrawn after expose events. Under certain
               circumstances (e.g., under openbox), not doing this would mean that the window
               is missing contents until other events trigger a refresh. */
            postRefresh_App();
#if defined (LAGRANGE_ENABLE_WINDOWPOS_FIX)
            if (d->initialPos.x >= 0) {
                int bx, by;
                SDL_GetWindowBordersSize(d->win, &by, &bx, NULL, NULL);
                SDL_SetWindowPosition(d->win, d->initialPos.x + bx, d->initialPos.y + by);
                d->initialPos = init1_I2(-1);
            }
#endif
            return iFalse;
        case SDL_WINDOWEVENT_MOVED: {
            if (!isMaximized_Window_(d) && !d->isDrawFrozen) {
                d->lastRect.pos = init_I2(ev->data1, ev->data2);
                iInt2 border = zero_I2();
#if !defined (iPlatformApple)
                SDL_GetWindowBordersSize(d->win, &border.y, &border.x, NULL, NULL);
#endif
                d->lastRect.pos = max_I2(zero_I2(), sub_I2(d->lastRect.pos, border));
            }
            return iTrue;
        }
        case SDL_WINDOWEVENT_RESIZED:
            if (!isMaximized_Window_(d) && !d->isDrawFrozen) {
                d->lastRect.size = init_I2(ev->data1, ev->data2);
            }
            updateRootSize_Window_(d, iTrue /* we were already redrawing during the resize */);
            return iTrue;
        case SDL_WINDOWEVENT_LEAVE:
            unhover_Widget();
            d->isMouseInside = iFalse;
            postCommand_App("window.mouse.exited");
            return iTrue;
        case SDL_WINDOWEVENT_ENTER:
            d->isMouseInside = iTrue;
            postCommand_App("window.mouse.entered");
            return iTrue;
        case SDL_WINDOWEVENT_TAKE_FOCUS:
            SDL_SetWindowInputFocus(d->win);
            return iTrue;
        case SDL_WINDOWEVENT_FOCUS_GAINED:
            d->focusGainedAt = SDL_GetTicks();
            postCommand_App("window.focus.gained");
            return iFalse;
        case SDL_WINDOWEVENT_FOCUS_LOST:
            postCommand_App("window.focus.lost");
            return iFalse;
        default:
            break;
    }
    return iFalse;
}

static void applyCursor_Window_(iWindow *d) {
    if (d->pendingCursor) {
        SDL_SetCursor(d->pendingCursor);
        d->pendingCursor = NULL;
    }
}

iBool processEvent_Window(iWindow *d, const SDL_Event *ev) {
    switch (ev->type) {
        case SDL_WINDOWEVENT: {
            return handleWindowEvent_Window_(d, &ev->window);
        }
        case SDL_RENDER_TARGETS_RESET:
        case SDL_RENDER_DEVICE_RESET: {
            resetFonts_Text();
            postCommand_App("theme.changed"); /* forces UI invalidation */
            break;
        }
        default: {
            SDL_Event event = *ev;
            if (event.type == SDL_USEREVENT && isCommand_UserEvent(ev, "window.unfreeze")) {
                d->isDrawFrozen = iFalse;
                /* When the window is shown for the first time, ensure glyphs get
                   re-cached correctly. */
                if (SDL_GetWindowFlags(d->win) & SDL_WINDOW_HIDDEN) {
                    SDL_ShowWindow(d->win);
                    resetFonts_Text();
                    postCommand_App("theme.changed");
                }
                postRefresh_App();
                return iTrue;
            }
            if (event.type == SDL_KEYDOWN && SDL_GetTicks() - d->focusGainedAt < 10) {
                /* Suspiciously close to when input focus was received. For example under openbox,
                   closing xterm with Ctrl+D will cause the keydown event to "spill" over to us.
                   As a workaround, ignore these events. */
                return iTrue; /* won't go to bindings, either */
            }
            /* Map mouse pointer coordinate to our coordinate system. */
            if (event.type == SDL_MOUSEMOTION) {
                setCursor_Window(d, SDL_SYSTEM_CURSOR_ARROW); /* default cursor */
                const iInt2 pos = coord_Window(d, event.motion.x, event.motion.y);
                event.motion.x = pos.x;
                event.motion.y = pos.y;
            }
            else if (event.type == SDL_MOUSEBUTTONUP || event.type == SDL_MOUSEBUTTONDOWN) {
                const iInt2 pos = coord_Window(d, event.button.x, event.button.y);
                event.button.x = pos.x;
                event.button.y = pos.y;
            }
            iWidget *widget = d->root;
            if (event.type == SDL_MOUSEMOTION || event.type == SDL_MOUSEWHEEL ||
                event.type == SDL_MOUSEBUTTONUP || event.type == SDL_MOUSEBUTTONDOWN) {
                if (mouseGrab_Widget()) {
                    widget = mouseGrab_Widget();
                }
            }
            iWidget *oldHover = hover_Widget();
            /* Dispatch the event to the tree of widgets. */
            iBool wasUsed = dispatchEvent_Widget(widget, &event);
            if (!wasUsed) {
                /* As a special case, clicking the middle mouse button can be used for pasting
                   from the clipboard. */
                if (event.type == SDL_MOUSEBUTTONDOWN && event.button.button == SDL_BUTTON_MIDDLE) {
                    SDL_Event paste;
                    iZap(paste);
                    paste.type           = SDL_KEYDOWN;
                    paste.key.keysym.sym = SDLK_v;
                    paste.key.keysym.mod = KMOD_PRIMARY;
                    paste.key.state      = SDL_PRESSED;
                    paste.key.timestamp  = SDL_GetTicks();
                    wasUsed = dispatchEvent_Widget(widget, &paste);
                }
            }
            if (oldHover != hover_Widget()) {
                postRefresh_App();
            }
            if (event.type == SDL_MOUSEMOTION) {
                applyCursor_Window_(d);
            }
            return wasUsed;
        }
    }
    return iFalse;
}

void draw_Window(iWindow *d) {
    if (d->isDrawFrozen) {
        return;
    }
//#if !defined (NDEBUG)
//    printf("draw %d\n", d->frameTime); fflush(stdout);
//#endif
    /* Clear the window. */
    SDL_SetRenderDrawColor(d->render, 0, 0, 0, 255);
    SDL_RenderClear(d->render);
    /* Draw widgets. */
    d->frameTime = SDL_GetTicks();
    draw_Widget(d->root);
#if 0
    /* Text cache debugging. */ {
        SDL_Texture *cache = glyphCache_Text();
        SDL_Rect rect = { d->root->rect.size.x - 640, 0, 640, 2.5 * 640 };
        SDL_SetRenderDrawColor(d->render, 0, 0, 0, 255);
        SDL_RenderFillRect(d->render, &rect);
        SDL_RenderCopy(d->render, glyphCache_Text(), NULL, &rect);
    }
#endif
    SDL_RenderPresent(d->render);
}

void resize_Window(iWindow *d, int w, int h) {
    SDL_SetWindowSize(d->win, w, h);
    updateRootSize_Window_(d, iFalse);
}

void setTitle_Window(iWindow *d, const iString *title) {
    SDL_SetWindowTitle(d->win, cstr_String(title));
}

void setUiScale_Window(iWindow *d, float uiScale) {
    uiScale = iClamp(uiScale, 0.5f, 4.0f);
    if (d) {
        d->uiScale = uiScale;
#if 0
        deinit_Text();
        setPixelRatio_Metrics(d->pixelRatio * d->uiScale);
        init_Text(d->render);
        postCommand_App("metrics.changed");
        /* TODO: Dynamic UI metrics change. Widgets need to update themselves. */
#endif
    }
    else {
        initialUiScale_ = uiScale;
    }
}

void setFreezeDraw_Window(iWindow *d, iBool freezeDraw) {
    d->isDrawFrozen = freezeDraw;
}

void setCursor_Window(iWindow *d, int cursor) {
    if (!d->cursors[cursor]) {
        d->cursors[cursor] = SDL_CreateSystemCursor(cursor);
    }
    d->pendingCursor = d->cursors[cursor];
}

iInt2 rootSize_Window(const iWindow *d) {
    return d->root->rect.size;
}

iInt2 coord_Window(const iWindow *d, int x, int y) {
#if defined (iPlatformMsys)
    /* On Windows, surface coordinates are in pixels. */
    return init_I2(x, y);
#else
    /* Coordinates are in points. */
    return mulf_I2(init_I2(x, y), d->pixelRatio);
#endif
}

iInt2 mouseCoord_Window(const iWindow *d) {
    if (!d->isMouseInside) {
        return init_I2(-1000000, -1000000);
    }
    int x, y;
    SDL_GetMouseState(&x, &y);
    return coord_Window(d, x, y);
}

float uiScale_Window(const iWindow *d) {
    return d->uiScale;
}

uint32_t frameTime_Window(const iWindow *d) {
    return d->frameTime;
}

iWindow *get_Window(void) {
    return theWindow_;
}