forked from chromium/chromium
-
Notifications
You must be signed in to change notification settings - Fork 0
/
native_theme_base.cc
1710 lines (1569 loc) · 62 KB
/
native_theme_base.cc
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
// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "ui/native_theme/native_theme_base.h"
#include <limits>
#include <memory>
#include "base/check.h"
#include "base/command_line.h"
#include "base/cxx17_backports.h"
#include "base/notreached.h"
#include "build/build_config.h"
#include "build/chromeos_buildflags.h"
#include "cc/paint/paint_flags.h"
#include "cc/paint/paint_shader.h"
#include "third_party/skia/include/core/SkPath.h"
#include "third_party/skia/include/effects/SkGradientShader.h"
#include "ui/base/layout.h"
#include "ui/base/resource/resource_bundle.h"
#include "ui/base/ui_base_features.h"
#include "ui/base/ui_base_switches.h"
#include "ui/color/color_provider.h"
#include "ui/gfx/canvas.h"
#include "ui/gfx/color_palette.h"
#include "ui/gfx/color_utils.h"
#include "ui/gfx/geometry/rect.h"
#include "ui/gfx/geometry/rect_f.h"
#include "ui/gfx/geometry/size.h"
#include "ui/gfx/geometry/skia_conversions.h"
#include "ui/gfx/image/image_skia.h"
#include "ui/native_theme/common_theme.h"
namespace {
// These are the default dimensions of radio buttons and checkboxes.
const int kCheckboxAndRadioWidth = 13;
const int kCheckboxAndRadioHeight = 13;
// Color constant pairs for light/default and dark color-schemes below.
constexpr SkColor kThumbActiveColor[2] = {SkColorSetRGB(0xF4, 0xF4, 0xF4),
gfx::kPlaceholderColor};
constexpr SkColor kThumbInactiveColor[2] = {SkColorSetRGB(0xEA, 0xEA, 0xEA),
SK_ColorWHITE};
constexpr SkColor kTrackColor[2] = {SkColorSetRGB(0xD3, 0xD3, 0xD3),
gfx::kPlaceholderColor};
// We are currently only painting kMenuPopupBackground with the kDefault
// scheme. If that changes, we need to replace gfx::kPlaceholderColor with an
// appropriate dark scheme color. See the DCHECK in PaintMenuPopupBackground().
constexpr SkColor kMenuPopupBackgroundColor[2] = {SkColorSetRGB(210, 225, 246),
gfx::kPlaceholderColor};
constexpr SkColor kArrowDisabledColor[2] = {SK_ColorBLACK, SK_ColorWHITE};
// The "dash" is 8x2 px by default (the checkbox is 13x13 px).
const SkScalar kIndeterminateInsetWidthRatio = (13 - 8) / 2.0f / 13;
const SkScalar kIndeterminateInsetHeightRatio = (13 - 2) / 2.0f / 13;
const SkScalar kBorderWidth = 1.f;
const SkScalar kSliderTrackHeight = 8.f;
const SkScalar kSliderThumbBorderWidth = 1.f;
const SkScalar kSliderThumbBorderHoveredWidth = 1.f;
// Default height for progress is 16px and the track is 8px.
const SkScalar kTrackHeightRatio = 8.0f / 16;
const SkScalar kMenuListArrowStrokeWidth = 2.f;
const int kSliderThumbSize = 16;
// This value was created with the following steps:
// 1. Take the SkColors returned by GetControlColor for kAccent and
// kHoveredAccent.
// 2. use color_utils::SkColorToHSL to convert those colors to HSL.
// 3. Take the difference of the luminance component of the HSL between those
// two colors.
// 4. Round to the nearest two decimal points.
//
// This is used to emulate the changes in color used for hover and pressed
// states when a custom accent-color is used to draw form controls. It just so
// happens that the luminance difference is the same for hover and press, and it
// also happens that GetDarkModeControlColor has very close values when you run
// these steps, which makes it work well for forced color-scheme for contrast
// with certain accent-colors.
const double kAccentLuminanceAdjust = 0.11;
// Get a color constant based on color-scheme
SkColor GetColor(const SkColor colors[2],
ui::NativeTheme::ColorScheme color_scheme) {
return colors[color_scheme == ui::NativeTheme::ColorScheme::kDark ? 1 : 0];
}
// This returns a color scheme which provides enough contrast with the custom
// accent-color to make it easy to see.
// |light_contrasting_color| is the color which is used to paint adjacent to
// |accent_color| in ColorScheme::kLight, and |dark_contrasting_color| is the
// one used for ColorScheme::kDark.
ui::NativeTheme::ColorScheme ColorSchemeForAccentColor(
const absl::optional<SkColor>& accent_color,
const ui::NativeTheme::ColorScheme& color_scheme,
const SkColor& light_contrasting_color,
const SkColor& dark_contrasting_color) {
// If there is enough contrast between accent_color and color_scheme, then
// let's keep it the same. Otherwise, flip the color_scheme to guarantee
// contrast.
if (!accent_color)
return color_scheme;
float contrast_with_light =
color_utils::GetContrastRatio(*accent_color, light_contrasting_color);
float contrast_with_dark =
color_utils::GetContrastRatio(*accent_color, dark_contrasting_color);
const float kMinimumContrast = 3;
if (color_scheme == ui::NativeTheme::ColorScheme::kDark) {
if (contrast_with_dark < kMinimumContrast &&
contrast_with_dark < contrast_with_light) {
// TODO(crbug.com/1216137): what if |contrast_with_light| is less than
// |kMinimumContrast|? Should we modify |accent_color|...?
return ui::NativeTheme::ColorScheme::kLight;
}
} else {
if (contrast_with_light < kMinimumContrast &&
contrast_with_light < contrast_with_dark) {
return ui::NativeTheme::ColorScheme::kDark;
}
}
return color_scheme;
}
SkColor AdjustLuminance(const SkColor& color, double luminance) {
color_utils::HSL hsl;
color_utils::SkColorToHSL(color, &hsl);
hsl.l = base::clamp(hsl.l + luminance, 0., 1.);
return color_utils::HSLToSkColor(hsl, SkColorGetA(color));
}
SkColor CustomAccentColorForState(
const SkColor& accent_color,
ui::NativeTheme::State state,
const ui::NativeTheme::ColorScheme& color_scheme) {
bool make_lighter = false;
bool is_dark_mode = color_scheme == ui::NativeTheme::ColorScheme::kDark;
switch (state) {
case ui::NativeTheme::kHovered:
make_lighter = is_dark_mode;
break;
case ui::NativeTheme::kPressed:
make_lighter = !is_dark_mode;
break;
default:
return accent_color;
}
return AdjustLuminance(accent_color,
(make_lighter ? 1 : -1) * kAccentLuminanceAdjust);
}
} // namespace
namespace ui {
gfx::Size NativeThemeBase::GetPartSize(Part part,
State state,
const ExtraParams& extra) const {
switch (part) {
// Please keep these in the order of NativeTheme::Part.
case kCheckbox:
return gfx::Size(kCheckboxAndRadioWidth, kCheckboxAndRadioHeight);
case kInnerSpinButton:
return gfx::Size(scrollbar_width_, 0);
case kMenuList:
return gfx::Size(); // No default size.
case kMenuPopupBackground:
return gfx::Size(); // No default size.
case kMenuItemBackground:
case kProgressBar:
case kPushButton:
return gfx::Size(); // No default size.
case kRadio:
return gfx::Size(kCheckboxAndRadioWidth, kCheckboxAndRadioHeight);
case kScrollbarDownArrow:
case kScrollbarUpArrow:
return gfx::Size(scrollbar_width_, scrollbar_button_length_);
case kScrollbarLeftArrow:
case kScrollbarRightArrow:
return gfx::Size(scrollbar_button_length_, scrollbar_width_);
case kScrollbarHorizontalThumb:
// This matches Firefox on Linux.
return gfx::Size(2 * scrollbar_width_, scrollbar_width_);
case kScrollbarVerticalThumb:
// This matches Firefox on Linux.
return gfx::Size(scrollbar_width_, 2 * scrollbar_width_);
case kScrollbarHorizontalTrack:
return gfx::Size(0, scrollbar_width_);
case kScrollbarVerticalTrack:
return gfx::Size(scrollbar_width_, 0);
case kScrollbarHorizontalGripper:
case kScrollbarVerticalGripper:
NOTIMPLEMENTED();
break;
case kSliderTrack:
return gfx::Size(); // No default size.
case kSliderThumb:
// These sizes match the sizes in Chromium Win.
return gfx::Size(kSliderThumbSize, kSliderThumbSize);
case kTabPanelBackground:
NOTIMPLEMENTED();
break;
case kTextField:
return gfx::Size(); // No default size.
case kTrackbarThumb:
case kTrackbarTrack:
case kWindowResizeGripper:
NOTIMPLEMENTED();
break;
default:
NOTREACHED() << "Unknown theme part: " << part;
break;
}
return gfx::Size();
}
float NativeThemeBase::GetBorderRadiusForPart(Part part,
float width,
float height) const {
switch (part) {
case kCheckbox:
return 2.f;
case kPushButton:
case kTextField:
return 2.f;
case kRadio:
return std::max(width, height) * 0.5;
case kProgressBar:
case kSliderTrack:
// default border radius for progress and range is 40px.
return 40.f;
case kSliderThumb:
return std::max(width, height) * 0.5;
default:
break;
}
return 0;
}
void NativeThemeBase::Paint(cc::PaintCanvas* canvas,
const ui::ColorProvider* color_provider,
Part part,
State state,
const gfx::Rect& rect,
const ExtraParams& extra,
ColorScheme color_scheme,
const absl::optional<SkColor>& accent_color) const {
if (rect.IsEmpty())
return;
canvas->save();
canvas->clipRect(gfx::RectToSkRect(rect));
// Form control accents shouldn't be drawn with any transparency.
absl::optional<SkColor> accent_color_opaque;
if (accent_color) {
accent_color_opaque = SkColorSetA(accent_color.value(), SK_AlphaOPAQUE);
}
switch (part) {
// Please keep these in the order of NativeTheme::Part.
case kCheckbox:
PaintCheckbox(canvas, state, rect, extra.button, color_scheme,
accent_color_opaque);
break;
// TODO(crbug.com/1052397): Revisit the macro expression once build flag switch
// of lacros-chrome is complete.
#if BUILDFLAG(IS_LINUX) || BUILDFLAG(IS_CHROMEOS_LACROS)
case kFrameTopArea:
PaintFrameTopArea(canvas, state, rect, extra.frame_top_area,
color_scheme);
break;
#endif
case kInnerSpinButton:
PaintInnerSpinButton(canvas, state, rect, extra.inner_spin, color_scheme);
break;
case kMenuList:
PaintMenuList(canvas, state, rect, extra.menu_list, color_scheme);
break;
case kMenuPopupBackground:
PaintMenuPopupBackground(canvas, color_provider, rect.size(),
extra.menu_background, color_scheme);
break;
case kMenuPopupSeparator:
PaintMenuSeparator(canvas, color_provider, state, rect,
extra.menu_separator);
break;
case kMenuItemBackground:
PaintMenuItemBackground(canvas, color_provider, state, rect,
extra.menu_item, color_scheme);
break;
case kProgressBar:
PaintProgressBar(canvas, state, rect, extra.progress_bar, color_scheme,
accent_color_opaque);
break;
case kPushButton:
PaintButton(canvas, state, rect, extra.button, color_scheme);
break;
case kRadio:
PaintRadio(canvas, state, rect, extra.button, color_scheme,
accent_color_opaque);
break;
case kScrollbarDownArrow:
case kScrollbarUpArrow:
case kScrollbarLeftArrow:
case kScrollbarRightArrow:
if (scrollbar_button_length_ > 0)
PaintArrowButton(canvas, rect, part, state, color_scheme,
extra.scrollbar_arrow);
break;
case kScrollbarHorizontalThumb:
case kScrollbarVerticalThumb:
PaintScrollbarThumb(canvas, color_provider, part, state, rect,
extra.scrollbar_thumb.scrollbar_theme, color_scheme);
break;
case kScrollbarHorizontalTrack:
case kScrollbarVerticalTrack:
PaintScrollbarTrack(canvas, part, state, extra.scrollbar_track, rect,
color_scheme);
break;
case kScrollbarHorizontalGripper:
case kScrollbarVerticalGripper:
// Invoked by views scrollbar code, don't care about for non-win
// implementations, so no NOTIMPLEMENTED.
break;
case kScrollbarCorner:
PaintScrollbarCorner(canvas, state, rect, color_scheme);
break;
case kSliderTrack:
PaintSliderTrack(canvas, state, rect, extra.slider, color_scheme,
accent_color_opaque);
break;
case kSliderThumb:
PaintSliderThumb(canvas, state, rect, extra.slider, color_scheme,
accent_color_opaque);
break;
case kTabPanelBackground:
NOTIMPLEMENTED();
break;
case kTextField:
PaintTextField(canvas, state, rect, extra.text_field, color_scheme);
break;
case kTrackbarThumb:
case kTrackbarTrack:
case kWindowResizeGripper:
NOTIMPLEMENTED();
break;
default:
NOTREACHED() << "Unknown theme part: " << part;
break;
}
canvas->restore();
}
bool NativeThemeBase::SupportsNinePatch(Part part) const {
return false;
}
gfx::Size NativeThemeBase::GetNinePatchCanvasSize(Part part) const {
NOTREACHED() << "NativeThemeBase doesn't support nine-patch resources.";
return gfx::Size();
}
gfx::Rect NativeThemeBase::GetNinePatchAperture(Part part) const {
NOTREACHED() << "NativeThemeBase doesn't support nine-patch resources.";
return gfx::Rect();
}
NativeThemeBase::NativeThemeBase() : NativeThemeBase(false) {}
NativeThemeBase::NativeThemeBase(bool should_only_use_dark_colors,
ui::SystemTheme system_theme)
: NativeTheme(should_only_use_dark_colors, system_theme) {}
NativeThemeBase::~NativeThemeBase() = default;
void NativeThemeBase::PaintArrowButton(
cc::PaintCanvas* canvas,
const gfx::Rect& rect,
Part direction,
State state,
ColorScheme color_scheme,
const ScrollbarArrowExtraParams& arrow) const {
cc::PaintFlags flags;
// Calculate button color.
SkScalar track_hsv[3];
SkColorToHSV(GetColor(kTrackColor, color_scheme), track_hsv);
SkColor button_color = SaturateAndBrighten(track_hsv, 0, 0.2f);
SkColor background_color = button_color;
if (state == kPressed) {
SkScalar button_hsv[3];
SkColorToHSV(button_color, button_hsv);
button_color = SaturateAndBrighten(button_hsv, 0, -0.1f);
} else if (state == kHovered) {
SkScalar button_hsv[3];
SkColorToHSV(button_color, button_hsv);
button_color = SaturateAndBrighten(button_hsv, 0, 0.05f);
}
SkIRect skrect;
skrect.setXYWH(rect.x(), rect.y(), rect.width(), rect.height());
// Paint the background (the area visible behind the rounded corners).
flags.setColor(background_color);
canvas->drawIRect(skrect, flags);
// Paint the button's outline and fill the middle
SkPath outline;
switch (direction) {
case kScrollbarUpArrow:
outline.moveTo(rect.x() + 0.5, rect.y() + rect.height() + 0.5);
outline.rLineTo(0, -(rect.height() - 2));
outline.rLineTo(2, -2);
outline.rLineTo(rect.width() - 5, 0);
outline.rLineTo(2, 2);
outline.rLineTo(0, rect.height() - 2);
break;
case kScrollbarDownArrow:
outline.moveTo(rect.x() + 0.5, rect.y() - 0.5);
outline.rLineTo(0, rect.height() - 2);
outline.rLineTo(2, 2);
outline.rLineTo(rect.width() - 5, 0);
outline.rLineTo(2, -2);
outline.rLineTo(0, -(rect.height() - 2));
break;
case kScrollbarRightArrow:
outline.moveTo(rect.x() - 0.5, rect.y() + 0.5);
outline.rLineTo(rect.width() - 2, 0);
outline.rLineTo(2, 2);
outline.rLineTo(0, rect.height() - 5);
outline.rLineTo(-2, 2);
outline.rLineTo(-(rect.width() - 2), 0);
break;
case kScrollbarLeftArrow:
outline.moveTo(rect.x() + rect.width() + 0.5, rect.y() + 0.5);
outline.rLineTo(-(rect.width() - 2), 0);
outline.rLineTo(-2, 2);
outline.rLineTo(0, rect.height() - 5);
outline.rLineTo(2, 2);
outline.rLineTo(rect.width() - 2, 0);
break;
default:
break;
}
outline.close();
flags.setStyle(cc::PaintFlags::kFill_Style);
flags.setColor(button_color);
canvas->drawPath(outline, flags);
flags.setAntiAlias(true);
flags.setStyle(cc::PaintFlags::kStroke_Style);
SkScalar thumb_hsv[3];
SkColorToHSV(GetColor(kThumbInactiveColor, color_scheme), thumb_hsv);
flags.setColor(OutlineColor(track_hsv, thumb_hsv));
canvas->drawPath(outline, flags);
PaintArrow(canvas, rect, direction, GetArrowColor(state, color_scheme));
}
void NativeThemeBase::PaintArrow(cc::PaintCanvas* gc,
const gfx::Rect& rect,
Part direction,
SkColor color) const {
cc::PaintFlags flags;
flags.setColor(color);
SkPath path = PathForArrow(rect, direction);
gc->drawPath(path, flags);
}
SkPath NativeThemeBase::PathForArrow(const gfx::Rect& rect,
Part direction) const {
gfx::Rect bounding_rect = BoundingRectForArrow(rect);
const gfx::PointF center = gfx::RectF(bounding_rect).CenterPoint();
SkPath path;
SkMatrix transform;
transform.setIdentity();
if (direction == kScrollbarUpArrow || direction == kScrollbarDownArrow) {
int arrow_altitude = bounding_rect.height() / 2 + 1;
path.moveTo(bounding_rect.x(), bounding_rect.bottom());
path.rLineTo(bounding_rect.width(), 0);
path.rLineTo(-bounding_rect.width() / 2.0f, -arrow_altitude);
path.close();
path.offset(0, -arrow_altitude / 2 + 1);
if (direction == kScrollbarDownArrow) {
transform.setScale(1, -1, center.x(), center.y());
}
} else {
int arrow_altitude = bounding_rect.width() / 2 + 1;
path.moveTo(bounding_rect.x(), bounding_rect.y());
path.rLineTo(0, bounding_rect.height());
path.rLineTo(arrow_altitude, -bounding_rect.height() / 2.0f);
path.close();
path.offset(arrow_altitude / 2, 0);
if (direction == kScrollbarLeftArrow) {
transform.setScale(-1, 1, center.x(), center.y());
}
}
path.transform(transform);
return path;
}
gfx::Rect NativeThemeBase::BoundingRectForArrow(const gfx::Rect& rect) const {
const std::pair<int, int> rect_sides =
std::minmax(rect.width(), rect.height());
const int side_length_inset = 2 * std::ceil(rect_sides.second / 4.f);
const int side_length =
std::min(rect_sides.first, rect_sides.second - side_length_inset);
// When there are an odd number of pixels, put the extra on the top/left.
return gfx::Rect(rect.x() + (rect.width() - side_length + 1) / 2,
rect.y() + (rect.height() - side_length + 1) / 2,
side_length, side_length);
}
void NativeThemeBase::PaintScrollbarTrack(
cc::PaintCanvas* canvas,
Part part,
State state,
const ScrollbarTrackExtraParams& extra_params,
const gfx::Rect& rect,
ColorScheme color_scheme) const {
cc::PaintFlags flags;
SkIRect skrect;
skrect.setLTRB(rect.x(), rect.y(), rect.right(), rect.bottom());
SkScalar track_hsv[3];
SkColorToHSV(GetColor(kTrackColor, color_scheme), track_hsv);
flags.setColor(SaturateAndBrighten(track_hsv, 0, 0));
canvas->drawIRect(skrect, flags);
SkScalar thumb_hsv[3];
SkColorToHSV(GetColor(kThumbInactiveColor, color_scheme), thumb_hsv);
flags.setColor(OutlineColor(track_hsv, thumb_hsv));
DrawBox(canvas, rect, flags);
}
void NativeThemeBase::PaintScrollbarThumb(cc::PaintCanvas* canvas,
const ColorProvider* color_provider,
Part part,
State state,
const gfx::Rect& rect,
ScrollbarOverlayColorTheme,
ColorScheme color_scheme) const {
const bool hovered = state == kHovered;
const int midx = rect.x() + rect.width() / 2;
const int midy = rect.y() + rect.height() / 2;
const bool vertical = part == kScrollbarVerticalThumb;
SkScalar thumb[3];
SkColorToHSV(
GetColor(hovered ? kThumbActiveColor : kThumbInactiveColor, color_scheme),
thumb);
cc::PaintFlags flags;
flags.setColor(SaturateAndBrighten(thumb, 0, 0.02f));
SkIRect skrect;
if (vertical)
skrect.setLTRB(rect.x(), rect.y(), midx + 1, rect.y() + rect.height());
else
skrect.setLTRB(rect.x(), rect.y(), rect.x() + rect.width(), midy + 1);
canvas->drawIRect(skrect, flags);
flags.setColor(SaturateAndBrighten(thumb, 0, -0.02f));
if (vertical) {
skrect.setLTRB(midx + 1, rect.y(), rect.x() + rect.width(),
rect.y() + rect.height());
} else {
skrect.setLTRB(rect.x(), midy + 1, rect.x() + rect.width(),
rect.y() + rect.height());
}
canvas->drawIRect(skrect, flags);
SkScalar track[3];
SkColorToHSV(GetColor(kTrackColor, color_scheme), track);
flags.setColor(OutlineColor(track, thumb));
DrawBox(canvas, rect, flags);
if (rect.height() > 10 && rect.width() > 10) {
const int grippy_half_width = 2;
const int inter_grippy_offset = 3;
if (vertical) {
DrawHorizLine(canvas, midx - grippy_half_width, midx + grippy_half_width,
midy - inter_grippy_offset, flags);
DrawHorizLine(canvas, midx - grippy_half_width, midx + grippy_half_width,
midy, flags);
DrawHorizLine(canvas, midx - grippy_half_width, midx + grippy_half_width,
midy + inter_grippy_offset, flags);
} else {
DrawVertLine(canvas, midx - inter_grippy_offset, midy - grippy_half_width,
midy + grippy_half_width, flags);
DrawVertLine(canvas, midx, midy - grippy_half_width,
midy + grippy_half_width, flags);
DrawVertLine(canvas, midx + inter_grippy_offset, midy - grippy_half_width,
midy + grippy_half_width, flags);
}
}
}
void NativeThemeBase::PaintScrollbarCorner(cc::PaintCanvas* canvas,
State state,
const gfx::Rect& rect,
ColorScheme color_scheme) const {}
void NativeThemeBase::PaintCheckbox(
cc::PaintCanvas* canvas,
State state,
const gfx::Rect& rect,
const ButtonExtraParams& button,
ColorScheme color_scheme,
const absl::optional<SkColor>& accent_color) const {
// ControlsBackgroundColorForState is used below for |checkmark_color|, which
// gets drawn adjacent to |accent_color|. In order to guarantee contrast
// between |checkmark_color| and |accent_color|, we choose the |color_scheme|
// here based on the two possible values for |checkmark_color|.
if (button.checked && state != kDisabled) {
color_scheme = ColorSchemeForAccentColor(
accent_color, color_scheme,
ControlsBackgroundColorForState(state, ColorScheme::kLight),
ControlsBackgroundColorForState(state, ColorScheme::kDark));
}
const float border_radius =
GetBorderRadiusForPart(kCheckbox, rect.width(), rect.height());
SkRect skrect =
PaintCheckboxRadioCommon(canvas, state, rect, button, true, border_radius,
color_scheme, accent_color);
if (!skrect.isEmpty()) {
cc::PaintFlags flags;
flags.setAntiAlias(true);
if (button.indeterminate) {
// Draw the dash.
flags.setColor(ControlsBorderColorForState(state, color_scheme));
const auto indeterminate =
skrect.makeInset(skrect.width() * kIndeterminateInsetWidthRatio,
skrect.height() * kIndeterminateInsetHeightRatio);
flags.setStyle(cc::PaintFlags::kFill_Style);
canvas->drawRoundRect(indeterminate, border_radius, border_radius, flags);
} else if (button.checked) {
// Draw the accent background.
flags.setStyle(cc::PaintFlags::kFill_Style);
if (accent_color && state != kDisabled) {
flags.setColor(
CustomAccentColorForState(*accent_color, state, color_scheme));
} else {
flags.setColor(ControlsAccentColorForState(state, color_scheme));
}
canvas->drawRoundRect(skrect, border_radius, border_radius, flags);
// Draw the checkmark.
SkPath check;
check.moveTo(skrect.x() + skrect.width() * 0.2, skrect.centerY());
check.rLineTo(skrect.width() * 0.2, skrect.height() * 0.2);
check.lineTo(skrect.right() - skrect.width() * 0.2,
skrect.y() + skrect.height() * 0.2);
flags.setStyle(cc::PaintFlags::kStroke_Style);
flags.setStrokeWidth(SkFloatToScalar(skrect.height() * 0.16));
SkColor checkmark_color =
ControlsBackgroundColorForState(state, color_scheme);
flags.setColor(checkmark_color);
canvas->drawPath(check, flags);
}
}
}
// Draws the common elements of checkboxes and radio buttons.
// Returns the rectangle within which any additional decorations should be
// drawn, or empty if none.
SkRect NativeThemeBase::PaintCheckboxRadioCommon(
cc::PaintCanvas* canvas,
State state,
const gfx::Rect& rect,
const ButtonExtraParams& button,
bool is_checkbox,
const SkScalar border_radius,
ColorScheme color_scheme,
const absl::optional<SkColor>& accent_color) const {
SkRect skrect = gfx::RectToSkRect(rect);
// Use the largest square that fits inside the provided rectangle.
// No other browser seems to support non-square widget, so accidentally
// having non-square sizes is common (eg. amazon and webkit dev tools).
if (skrect.width() != skrect.height()) {
SkScalar size = std::min(skrect.width(), skrect.height());
skrect.inset((skrect.width() - size) / 2, (skrect.height() - size) / 2);
}
// If the rectangle is too small then paint only a rectangle. We don't want
// to have to worry about '- 1' and '+ 1' calculations below having overflow
// or underflow.
if (skrect.width() <= 2) {
cc::PaintFlags flags;
if (accent_color && state != kDisabled) {
flags.setColor(
CustomAccentColorForState(*accent_color, state, color_scheme));
} else {
flags.setColor(GetControlColor(kBorder, color_scheme));
}
flags.setStyle(cc::PaintFlags::kFill_Style);
canvas->drawRect(skrect, flags);
// Too small to draw anything more.
return SkRect::MakeEmpty();
}
cc::PaintFlags flags;
flags.setAntiAlias(true);
// Paint the background (is not visible behind the rounded corners).
// Note we need to shrink the rect for background a little bit so we don't
// see artifacts introduced by antialiasing between the border and the
// background near the rounded corners of checkbox.
const auto background_rect =
skrect.makeInset(kBorderWidth * 0.2f, kBorderWidth * 0.2f);
PaintLightenLayer(canvas, background_rect, state, border_radius,
color_scheme);
flags.setColor(ControlsBackgroundColorForState(state, color_scheme));
flags.setStyle(cc::PaintFlags::kFill_Style);
canvas->drawRoundRect(background_rect, border_radius, border_radius, flags);
// For checkbox the border is drawn only when it is unchecked or
// indeterminate. For radio the border is always drawn.
if (!(is_checkbox && button.checked && !button.indeterminate)) {
// Shrink half border width so the final pixels of the border will be
// within the rectangle.
const auto border_rect =
skrect.makeInset(kBorderWidth / 2, kBorderWidth / 2);
SkColor border_color;
if (button.checked && !button.indeterminate) {
if (accent_color && state != kDisabled) {
border_color =
CustomAccentColorForState(*accent_color, state, color_scheme);
} else {
border_color = ControlsAccentColorForState(state, color_scheme);
}
} else {
border_color = ControlsBorderColorForState(state, color_scheme);
}
flags.setColor(border_color);
flags.setStyle(cc::PaintFlags::kStroke_Style);
flags.setStrokeWidth(kBorderWidth);
canvas->drawRoundRect(border_rect, border_radius, border_radius, flags);
}
// Return the rectangle for drawing any additional decorations.
return skrect;
}
void NativeThemeBase::PaintRadio(
cc::PaintCanvas* canvas,
State state,
const gfx::Rect& rect,
const ButtonExtraParams& button,
ColorScheme color_scheme,
const absl::optional<SkColor>& accent_color) const {
// ControlsBackgroundColorForState is used below in PaintCheckboxRadioCommon,
// which gets draw adjacent to |accent_color|. In order to guarantee contrast
// between the background and |accent_color|, we choose the |color_scheme|
// here based on the two possible values for ControlsBackgroundColorForState.
if (button.checked && state != kDisabled) {
color_scheme = ColorSchemeForAccentColor(
accent_color, color_scheme,
ControlsBackgroundColorForState(state, ColorScheme::kLight),
ControlsBackgroundColorForState(state, ColorScheme::kDark));
}
// Most of a radio button is the same as a checkbox, except the the rounded
// square is a circle (i.e. border radius >= 100%).
const float border_radius =
GetBorderRadiusForPart(kRadio, rect.width(), rect.height());
SkRect skrect =
PaintCheckboxRadioCommon(canvas, state, rect, button, false,
border_radius, color_scheme, accent_color);
if (!skrect.isEmpty() && button.checked) {
// Draw the dot.
cc::PaintFlags flags;
flags.setAntiAlias(true);
flags.setStyle(cc::PaintFlags::kFill_Style);
if (accent_color && state != kDisabled) {
flags.setColor(
CustomAccentColorForState(*accent_color, state, color_scheme));
} else {
flags.setColor(ControlsAccentColorForState(state, color_scheme));
}
skrect.inset(skrect.width() * 0.2, skrect.height() * 0.2);
// Use drawRoundedRect instead of drawOval to be completely consistent
// with the border in PaintCheckboxRadioNewCommon.
canvas->drawRoundRect(skrect, border_radius, border_radius, flags);
}
}
void NativeThemeBase::PaintButton(cc::PaintCanvas* canvas,
State state,
const gfx::Rect& rect,
const ButtonExtraParams& button,
ColorScheme color_scheme) const {
cc::PaintFlags flags;
SkRect skrect = gfx::RectToSkRect(rect);
float border_width = AdjustBorderWidthByZoom(kBorderWidth, button.zoom);
flags.setAntiAlias(true);
flags.setStyle(cc::PaintFlags::kFill_Style);
// If the button is too small, fallback to drawing a single, solid color.
if (rect.width() < 5 || rect.height() < 5) {
flags.setColor(ButtonFillColorForState(state, color_scheme));
canvas->drawRect(skrect, flags);
return;
}
float border_radius =
GetBorderRadiusForPart(kPushButton, rect.width(), rect.height());
border_radius =
AdjustBorderRadiusByZoom(kPushButton, border_radius, button.zoom);
// Paint the background (is not visible behind the rounded corners).
skrect.inset(border_width / 2, border_width / 2);
PaintLightenLayer(canvas, skrect, state, border_radius, color_scheme);
flags.setColor(ButtonFillColorForState(state, color_scheme));
canvas->drawRoundRect(skrect, border_radius, border_radius, flags);
// Paint the border: 1px solid.
if (button.has_border) {
flags.setStyle(cc::PaintFlags::kStroke_Style);
flags.setStrokeWidth(border_width);
flags.setColor(ButtonBorderColorForState(state, color_scheme));
canvas->drawRoundRect(skrect, border_radius, border_radius, flags);
}
}
void NativeThemeBase::PaintTextField(cc::PaintCanvas* canvas,
State state,
const gfx::Rect& rect,
const TextFieldExtraParams& text,
ColorScheme color_scheme) const {
SkRect bounds = gfx::RectToSkRect(rect);
float border_radius =
GetBorderRadiusForPart(kTextField, rect.width(), rect.height());
border_radius =
AdjustBorderRadiusByZoom(kTextField, border_radius, text.zoom);
float border_width = AdjustBorderWidthByZoom(kBorderWidth, text.zoom);
// Paint the background (is not visible behind the rounded corners).
bounds.inset(border_width / 2, border_width / 2);
cc::PaintFlags fill_flags;
fill_flags.setStyle(cc::PaintFlags::kFill_Style);
if (text.background_color != 0) {
PaintLightenLayer(canvas, bounds, state, border_radius, color_scheme);
SkColor text_field_background_color =
ControlsBackgroundColorForState(state, color_scheme);
if (text.auto_complete_active && state != kDisabled) {
text_field_background_color =
GetControlColor(kAutoCompleteBackground, color_scheme);
}
fill_flags.setColor(text_field_background_color);
canvas->drawRoundRect(bounds, border_radius, border_radius, fill_flags);
}
// Paint the border: 1px solid.
if (text.has_border) {
cc::PaintFlags stroke_flags;
stroke_flags.setColor(ControlsBorderColorForState(state, color_scheme));
stroke_flags.setStyle(cc::PaintFlags::kStroke_Style);
stroke_flags.setStrokeWidth(border_width);
canvas->drawRoundRect(bounds, border_radius, border_radius, stroke_flags);
}
}
void NativeThemeBase::PaintMenuList(cc::PaintCanvas* canvas,
State state,
const gfx::Rect& rect,
const MenuListExtraParams& menu_list,
ColorScheme color_scheme) const {
// If a border radius is specified paint the background and the border of
// the menulist, otherwise let the non-theming code paint the background
// and the border of the control. The arrow (menulist button) is always
// painted by the theming code.
if (!menu_list.has_border_radius) {
TextFieldExtraParams text_field = {false};
text_field.background_color = menu_list.background_color;
text_field.has_border = menu_list.has_border;
text_field.zoom = menu_list.zoom;
PaintTextField(canvas, state, rect, text_field, color_scheme);
}
// Paint the arrow.
cc::PaintFlags flags;
flags.setColor(menu_list.arrow_color);
flags.setAntiAlias(true);
flags.setStyle(cc::PaintFlags::kStroke_Style);
flags.setStrokeWidth(kMenuListArrowStrokeWidth);
float arrow_width = menu_list.arrow_size;
int arrow_height = arrow_width * 0.5;
gfx::Rect arrow(menu_list.arrow_x, menu_list.arrow_y - (arrow_height / 2),
arrow_width, arrow_height);
arrow.Intersect(rect);
if (arrow_width != arrow.width() || arrow_height != arrow.height()) {
// The arrow is clipped after being constrained to the paint rect so we
// need to recalculate its size.
int height_clip = arrow_height - arrow.height();
int width_clip = arrow_width - arrow.width();
if (height_clip > width_clip) {
arrow.set_width(arrow.height() * 1.6);
} else {
arrow.set_height(arrow.width() * 0.6);
}
arrow.set_y(menu_list.arrow_y - (arrow.height() / 2));
}
SkPath path;
path.moveTo(arrow.x(), arrow.y());
path.lineTo(arrow.x() + arrow.width() / 2, arrow.y() + arrow.height());
path.lineTo(arrow.x() + arrow.width(), arrow.y());
canvas->drawPath(path, flags);
}
void NativeThemeBase::PaintMenuPopupBackground(
cc::PaintCanvas* canvas,
const ColorProvider* color_provider,
const gfx::Size& size,
const MenuBackgroundExtraParams& menu_background,
ColorScheme color_scheme) const {
// We are currently only painting kMenuPopupBackground with the kDefault
// scheme. If that changes, we need to add an appropriate dark scheme color to
// kMenuPopupBackgroundColor.
DCHECK(color_scheme == ColorScheme::kDefault);
// TODO(crbug/1308932): Remove FromColor and make all SkColor4f.
canvas->drawColor(
SkColor4f::FromColor(GetColor(kMenuPopupBackgroundColor, color_scheme)),
SkBlendMode::kSrc);
}
void NativeThemeBase::PaintMenuItemBackground(
cc::PaintCanvas* canvas,
const ColorProvider* color_provider,
State state,
const gfx::Rect& rect,
const MenuItemExtraParams& menu_item,
ColorScheme color_scheme) const {
// By default don't draw anything over the normal background.
}
void NativeThemeBase::PaintMenuSeparator(
cc::PaintCanvas* canvas,
const ui::ColorProvider* color_provider,
State state,
const gfx::Rect& rect,
const MenuSeparatorExtraParams& menu_separator) const {
DCHECK(color_provider);
cc::PaintFlags flags;
flags.setColor(color_provider->GetColor(kColorMenuSeparator));
canvas->drawRect(gfx::RectToSkRect(*menu_separator.paint_rect), flags);
}
void NativeThemeBase::PaintSliderTrack(
cc::PaintCanvas* canvas,
State state,
const gfx::Rect& rect,
const SliderExtraParams& slider,
ColorScheme color_scheme,
const absl::optional<SkColor>& accent_color) const {
// ControlsFillColorForState is used below for the slider track, which
// gets drawn adjacent to |accent_color|. In order to guarantee contrast
// between the slider track and |accent_color|, we choose the |color_scheme|
// here based on the two possible values for the slider track.
// We use kNormal here because the user hovering or clicking on the slider
// will change the state to something else, and we don't want the color-scheme
// to flicker back and forth when the user interacts with it.
if (state != kDisabled) {
color_scheme = ColorSchemeForAccentColor(
accent_color, color_scheme,
ControlsFillColorForState(kNormal, ColorScheme::kLight),
ControlsFillColorForState(kNormal, ColorScheme::kDark));
}
// Paint the entire slider track.
cc::PaintFlags flags;
flags.setAntiAlias(true);
flags.setColor(ControlsFillColorForState(state, color_scheme));
const float track_height = kSliderTrackHeight * slider.zoom;
SkRect track_rect = AlignSliderTrack(rect, slider, false, track_height);
float border_width = AdjustBorderWidthByZoom(kBorderWidth, slider.zoom);
// Shrink the track by 1 pixel so the thumb can completely cover the track