1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
5 #include "ui/views/controls/menu/menu_image_util.h"
7 #include "base/i18n/rtl.h"
8 #include "base/logging.h"
9 #include "grit/ui_resources.h"
10 #include "third_party/skia/include/effects/SkGradientShader.h"
11 #include "ui/base/resource/resource_bundle.h"
12 #include "ui/gfx/canvas.h"
13 #include "ui/gfx/image/canvas_image_source.h"
14 #include "ui/gfx/image/image.h"
15 #include "ui/gfx/image/image_skia.h"
16 #include "ui/gfx/image/image_skia_source.h"
17 #include "ui/gfx/point.h"
18 #include "ui/gfx/size.h"
22 // Size of the radio button inciator.
23 const int kSelectedIndicatorSize = 5;
24 const int kIndicatorSize = 10;
26 // Used for the radio indicator. See theme_draw for details.
27 const double kGradientStop = .5;
28 const SkColor kGradient0 = SkColorSetRGB(255, 255, 255);
29 const SkColor kGradient1 = SkColorSetRGB(255, 255, 255);
30 const SkColor kGradient2 = SkColorSetRGB(0xD8, 0xD8, 0xD8);
31 const SkColor kBaseStroke = SkColorSetRGB(0x8F, 0x8F, 0x8F);
32 const SkColor kRadioButtonIndicatorGradient0 = SkColorSetRGB(0, 0, 0);
33 const SkColor kRadioButtonIndicatorGradient1 = SkColorSetRGB(0x83, 0x83, 0x83);
34 const SkColor kIndicatorStroke = SkColorSetRGB(0, 0, 0);
36 class RadioButtonImageSource : public gfx::CanvasImageSource {
38 explicit RadioButtonImageSource(bool selected)
39 : CanvasImageSource(gfx::Size(kIndicatorSize + 2, kIndicatorSize + 2),
43 virtual ~RadioButtonImageSource() {}
45 virtual void Draw(gfx::Canvas* canvas) OVERRIDE {
46 canvas->Translate(gfx::Vector2d(1, 1));
48 SkPoint gradient_points[3];
49 gradient_points[0].iset(0, 0);
50 gradient_points[1].iset(0,
51 static_cast<int>(kIndicatorSize * kGradientStop));
52 gradient_points[2].iset(0, kIndicatorSize);
53 SkColor gradient_colors[3] = { kGradient0, kGradient1, kGradient2 };
54 skia::RefPtr<SkShader> shader = skia::AdoptRef(
55 SkGradientShader::CreateLinear(
56 gradient_points, gradient_colors, NULL, arraysize(gradient_points),
57 SkShader::kClamp_TileMode, NULL));
59 paint.setStyle(SkPaint::kFill_Style);
60 paint.setAntiAlias(true);
61 paint.setShader(shader.get());
62 int radius = kIndicatorSize / 2;
63 canvas->sk_canvas()->drawCircle(radius, radius, radius, paint);
64 paint.setStrokeWidth(SkIntToScalar(0));
65 paint.setShader(NULL);
66 paint.setStyle(SkPaint::kStroke_Style);
67 paint.setColor(kBaseStroke);
68 canvas->sk_canvas()->drawCircle(radius, radius, radius, paint);
71 SkPoint selected_gradient_points[2];
72 selected_gradient_points[0].iset(0, 0);
73 selected_gradient_points[1].iset(0, kSelectedIndicatorSize);
74 SkColor selected_gradient_colors[2] = { kRadioButtonIndicatorGradient0,
75 kRadioButtonIndicatorGradient1 };
76 shader = skia::AdoptRef(
77 SkGradientShader::CreateLinear(
78 selected_gradient_points, selected_gradient_colors, NULL,
79 arraysize(selected_gradient_points),
80 SkShader::kClamp_TileMode, NULL));
81 paint.setShader(shader.get());
82 paint.setStyle(SkPaint::kFill_Style);
83 canvas->sk_canvas()->drawCircle(radius, radius,
84 kSelectedIndicatorSize / 2, paint);
86 paint.setStrokeWidth(SkIntToScalar(0));
87 paint.setShader(NULL);
88 paint.setStyle(SkPaint::kStroke_Style);
89 paint.setColor(kIndicatorStroke);
90 canvas->sk_canvas()->drawCircle(radius, radius,
91 kSelectedIndicatorSize / 2, paint);
98 DISALLOW_COPY_AND_ASSIGN(RadioButtonImageSource);
101 gfx::ImageSkia* CreateRadioButtonImage(bool selected) {
102 RadioButtonImageSource* source = new RadioButtonImageSource(selected);
103 return new gfx::ImageSkia(source, source->size());
106 class SubmenuArrowImageSource : public gfx::CanvasImageSource {
108 SubmenuArrowImageSource(int image_id)
109 : gfx::CanvasImageSource(ui::ResourceBundle::GetSharedInstance().
110 GetImageNamed(image_id).ToImageSkia()->size(), false),
111 image_id_(image_id) {}
112 virtual ~SubmenuArrowImageSource() {}
114 virtual void Draw(gfx::Canvas* canvas) OVERRIDE {
115 ui::ResourceBundle& rb = ui::ResourceBundle::GetSharedInstance();
116 const gfx::ImageSkia* r = rb.GetImageNamed(image_id_).ToImageSkia();
117 canvas->Scale(-1, 1);
118 canvas->DrawImageInt(*r, - r->width(), 0);
122 static gfx::Size GetSubmenuArrowSize() {
123 return ui::ResourceBundle::GetSharedInstance()
124 .GetImageNamed(IDR_MENU_HIERARCHY_ARROW).ToImageSkia()->size();
129 DISALLOW_COPY_AND_ASSIGN(SubmenuArrowImageSource);
132 gfx::ImageSkia GetRtlSubmenuArrowImage(bool rtl,
133 bool dark_background) {
134 int image_id = dark_background ? IDR_MENU_HIERARCHY_ARROW_DARK_BACKGROUND :
135 IDR_MENU_HIERARCHY_ARROW;
138 return ui::ResourceBundle::GetSharedInstance().GetImageNamed(image_id).
142 static gfx::ImageSkia* kRtlArrow = NULL;
143 static gfx::ImageSkia* kRtlArrowDarkBg = NULL;
144 gfx::ImageSkia** image = dark_background ? &kRtlArrowDarkBg : &kRtlArrow;
147 SubmenuArrowImageSource* source = new SubmenuArrowImageSource(image_id);
148 *image = new gfx::ImageSkia(source, source->size());
158 gfx::ImageSkia GetMenuCheckImage(bool dark_background) {
159 int image_id = dark_background ? IDR_MENU_CHECK_CHECKED_DARK_BACKGROUND :
160 IDR_MENU_CHECK_CHECKED;
161 return ui::ResourceBundle::GetSharedInstance().GetImageNamed(image_id).
165 gfx::ImageSkia GetRadioButtonImage(bool selected) {
166 int image_id = selected ? IDR_MENU_RADIO_SELECTED : IDR_MENU_RADIO_EMPTY;
167 return ui::ResourceBundle::GetSharedInstance().GetImageNamed(image_id).
171 gfx::ImageSkia GetSubmenuArrowImage(bool dark_background) {
172 return GetRtlSubmenuArrowImage(base::i18n::IsRTL(), dark_background);