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| 1 // Copyright (c) 2011 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. | |
| 4 | |
| 5 #include "views/controls/menu/menu_image_util_gtk.h" | |
| 6 | |
| 7 #include "base/i18n/rtl.h" | |
| 8 #include "grit/ui_resources.h" | |
| 9 #include "third_party/skia/include/effects/SkGradientShader.h" | |
| 10 #include "ui/base/resource/resource_bundle.h" | |
| 11 #include "ui/gfx/canvas_skia.h" | |
| 12 | |
| 13 namespace { | |
| 14 | |
| 15 // Size of the radio button inciator. | |
| 16 const int kSelectedIndicatorSize = 5; | |
| 17 const int kIndicatorSize = 10; | |
| 18 | |
| 19 // Used for the radio indicator. See theme_draw for details. | |
| 20 const double kGradientStop = .5; | |
| 21 const SkColor kGradient0 = SkColorSetRGB(255, 255, 255); | |
| 22 const SkColor kGradient1 = SkColorSetRGB(255, 255, 255); | |
| 23 const SkColor kGradient2 = SkColorSetRGB(0xD8, 0xD8, 0xD8); | |
| 24 const SkColor kBaseStroke = SkColorSetRGB(0x8F, 0x8F, 0x8F); | |
| 25 const SkColor kRadioButtonIndicatorGradient0 = SkColorSetRGB(0, 0, 0); | |
| 26 const SkColor kRadioButtonIndicatorGradient1 = SkColorSetRGB(0x83, 0x83, 0x83); | |
| 27 const SkColor kIndicatorStroke = SkColorSetRGB(0, 0, 0); | |
| 28 | |
| 29 SkBitmap* CreateRadioButtonImage(bool selected) { | |
| 30 // + 2 (1px on each side) to cover rounding error. | |
| 31 gfx::CanvasSkia canvas(kIndicatorSize + 2, kIndicatorSize + 2, false); | |
| 32 canvas.TranslateInt(1, 1); | |
| 33 | |
| 34 SkPoint gradient_points[3]; | |
| 35 gradient_points[0].set(SkIntToScalar(0), SkIntToScalar(0)); | |
| 36 gradient_points[1].set( | |
| 37 SkIntToScalar(0), | |
| 38 SkIntToScalar(static_cast<int>(kIndicatorSize * kGradientStop))); | |
| 39 gradient_points[2].set(SkIntToScalar(0), SkIntToScalar(kIndicatorSize)); | |
| 40 SkColor gradient_colors[3] = { kGradient0, kGradient1, kGradient2 }; | |
| 41 SkShader* shader = SkGradientShader::CreateLinear( | |
| 42 gradient_points, gradient_colors, NULL, arraysize(gradient_points), | |
| 43 SkShader::kClamp_TileMode, NULL); | |
| 44 SkPaint paint; | |
| 45 paint.setStyle(SkPaint::kFill_Style); | |
| 46 paint.setAntiAlias(true); | |
| 47 paint.setShader(shader); | |
| 48 shader->unref(); | |
| 49 int radius = kIndicatorSize / 2; | |
| 50 canvas.drawCircle(radius, radius, radius, paint); | |
| 51 | |
| 52 paint.setStrokeWidth(SkIntToScalar(0)); | |
| 53 paint.setShader(NULL); | |
| 54 paint.setStyle(SkPaint::kStroke_Style); | |
| 55 paint.setColor(kBaseStroke); | |
| 56 canvas.drawCircle(radius, radius, radius, paint); | |
| 57 | |
| 58 if (selected) { | |
| 59 SkPoint selected_gradient_points[2]; | |
| 60 selected_gradient_points[0].set(SkIntToScalar(0), SkIntToScalar(0)); | |
| 61 selected_gradient_points[1].set( | |
| 62 SkIntToScalar(0), | |
| 63 SkIntToScalar(kSelectedIndicatorSize)); | |
| 64 SkColor selected_gradient_colors[2] = { kRadioButtonIndicatorGradient0, | |
| 65 kRadioButtonIndicatorGradient1 }; | |
| 66 shader = SkGradientShader::CreateLinear( | |
| 67 selected_gradient_points, selected_gradient_colors, NULL, | |
| 68 arraysize(selected_gradient_points), SkShader::kClamp_TileMode, NULL); | |
| 69 paint.setShader(shader); | |
| 70 shader->unref(); | |
| 71 paint.setStyle(SkPaint::kFill_Style); | |
| 72 canvas.drawCircle(radius, radius, | |
| 73 kSelectedIndicatorSize / 2, paint); | |
| 74 | |
| 75 paint.setStrokeWidth(SkIntToScalar(0)); | |
| 76 paint.setShader(NULL); | |
| 77 paint.setStyle(SkPaint::kStroke_Style); | |
| 78 paint.setColor(kIndicatorStroke); | |
| 79 canvas.drawCircle(radius, radius, | |
| 80 kSelectedIndicatorSize / 2, paint); | |
| 81 } | |
| 82 return new SkBitmap(canvas.ExtractBitmap()); | |
| 83 } | |
| 84 | |
| 85 SkBitmap* GetRtlSubmenuArrowImage() { | |
| 86 static SkBitmap* kRtlArrow = NULL; | |
| 87 if (!kRtlArrow) { | |
| 88 ResourceBundle& rb = ResourceBundle::GetSharedInstance(); | |
| 89 SkBitmap* r = rb.GetBitmapNamed(IDR_MENU_ARROW); | |
| 90 gfx::CanvasSkia canvas(r->width(), r->height(), false); | |
| 91 canvas.ScaleInt(-1, 1); | |
| 92 canvas.DrawBitmapInt(*r, - r->width(), 0); | |
| 93 kRtlArrow = new SkBitmap(canvas.ExtractBitmap()); | |
| 94 } | |
| 95 return kRtlArrow; | |
| 96 } | |
| 97 | |
| 98 } // namespace | |
| 99 | |
| 100 namespace views { | |
| 101 | |
| 102 const SkBitmap* GetRadioButtonImage(bool selected) { | |
| 103 static const SkBitmap* kRadioOn = CreateRadioButtonImage(true); | |
| 104 static const SkBitmap* kRadioOff = CreateRadioButtonImage(false); | |
| 105 | |
| 106 return selected ? kRadioOn : kRadioOff; | |
| 107 } | |
| 108 | |
| 109 const SkBitmap* GetSubmenuArrowImage() { | |
| 110 return base::i18n::IsRTL() ? | |
| 111 GetRtlSubmenuArrowImage() : | |
| 112 ResourceBundle::GetSharedInstance().GetBitmapNamed(IDR_MENU_ARROW); | |
| 113 } | |
| 114 | |
| 115 } // namespace views; | |
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