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| 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. | |
| 4 | |
| 5 #include "ui/views/controls/button/label_button_border.h" | |
| 6 | |
| 7 #include "base/logging.h" | |
| 8 #include "third_party/skia/include/core/SkPaint.h" | |
| 9 #include "third_party/skia/include/effects/SkLerpXfermode.h" | |
| 10 #include "ui/base/resource/resource_bundle.h" | |
| 11 #include "ui/gfx/animation/animation.h" | |
| 12 #include "ui/gfx/canvas.h" | |
| 13 #include "ui/gfx/rect.h" | |
| 14 #include "ui/gfx/skia_util.h" | |
| 15 #include "ui/gfx/sys_color_change_listener.h" | |
| 16 #include "ui/native_theme/native_theme.h" | |
| 17 #include "ui/resources/grit/ui_resources.h" | |
| 18 #include "ui/views/border.h" | |
| 19 #include "ui/views/controls/button/label_button.h" | |
| 20 #include "ui/views/native_theme_delegate.h" | |
| 21 | |
| 22 namespace views { | |
| 23 | |
| 24 namespace { | |
| 25 | |
| 26 // Insets for the unified button images. This assumes that the images | |
| 27 // are of a 9 grid, of 5x5 size each. | |
| 28 const int kButtonInsets = 5; | |
| 29 | |
| 30 // The text-button hot and pushed image IDs; normal is unadorned by default. | |
| 31 const int kTextHoveredImages[] = IMAGE_GRID(IDR_TEXTBUTTON_HOVER); | |
| 32 const int kTextPressedImages[] = IMAGE_GRID(IDR_TEXTBUTTON_PRESSED); | |
| 33 | |
| 34 // A helper function to paint the appropriate broder images. | |
| 35 void PaintHelper(LabelButtonBorder* border, | |
| 36 gfx::Canvas* canvas, | |
| 37 ui::NativeTheme::State state, | |
| 38 const gfx::Rect& rect, | |
| 39 const ui::NativeTheme::ExtraParams& extra) { | |
| 40 Painter* painter = | |
| 41 border->GetPainter(extra.button.is_focused, | |
| 42 Button::GetButtonStateFrom(state)); | |
| 43 // Paint any corresponding unfocused painter if there is no focused painter. | |
| 44 if (!painter && extra.button.is_focused) | |
| 45 painter = border->GetPainter(false, Button::GetButtonStateFrom(state)); | |
| 46 if (painter) | |
| 47 Painter::PaintPainterAt(canvas, painter, rect); | |
| 48 } | |
| 49 | |
| 50 } // namespace | |
| 51 | |
| 52 LabelButtonBorder::LabelButtonBorder(Button::ButtonStyle style) | |
| 53 : style_(style) { | |
| 54 ui::ResourceBundle& rb = ui::ResourceBundle::GetSharedInstance(); | |
| 55 const gfx::Insets insets(kButtonInsets, | |
| 56 kButtonInsets, | |
| 57 kButtonInsets, | |
| 58 kButtonInsets); | |
| 59 | |
| 60 if (style == Button::STYLE_BUTTON) { | |
| 61 set_insets(gfx::Insets(8, 13, 8, 13)); | |
| 62 SetPainter(false, Button::STATE_NORMAL, | |
| 63 Painter::CreateImagePainter( | |
| 64 *rb.GetImageSkiaNamed(IDR_BUTTON_NORMAL), insets)); | |
| 65 SetPainter(false, Button::STATE_HOVERED, | |
| 66 Painter::CreateImagePainter( | |
| 67 *rb.GetImageSkiaNamed(IDR_BUTTON_HOVER), insets)); | |
| 68 SetPainter(false, Button::STATE_PRESSED, | |
| 69 Painter::CreateImagePainter( | |
| 70 *rb.GetImageSkiaNamed(IDR_BUTTON_PRESSED), insets)); | |
| 71 SetPainter(false, Button::STATE_DISABLED, | |
| 72 Painter::CreateImagePainter( | |
| 73 *rb.GetImageSkiaNamed(IDR_BUTTON_DISABLED), insets)); | |
| 74 SetPainter(true, Button::STATE_NORMAL, | |
| 75 Painter::CreateImagePainter( | |
| 76 *rb.GetImageSkiaNamed(IDR_BUTTON_FOCUSED_NORMAL), insets)); | |
| 77 SetPainter(true, Button::STATE_HOVERED, | |
| 78 Painter::CreateImagePainter( | |
| 79 *rb.GetImageSkiaNamed(IDR_BUTTON_FOCUSED_HOVER), insets)); | |
| 80 SetPainter(true, Button::STATE_PRESSED, | |
| 81 Painter::CreateImagePainter( | |
| 82 *rb.GetImageSkiaNamed(IDR_BUTTON_FOCUSED_PRESSED), insets)); | |
| 83 SetPainter(true, Button::STATE_DISABLED, | |
| 84 Painter::CreateImagePainter( | |
| 85 *rb.GetImageSkiaNamed(IDR_BUTTON_DISABLED), insets)); | |
| 86 } else if (style == Button::STYLE_TEXTBUTTON) { | |
| 87 set_insets(gfx::Insets(5, 6, 5, 6)); | |
| 88 SetPainter(false, Button::STATE_HOVERED, | |
| 89 Painter::CreateImageGridPainter(kTextHoveredImages)); | |
| 90 SetPainter(false, Button::STATE_PRESSED, | |
| 91 Painter::CreateImageGridPainter(kTextPressedImages)); | |
| 92 } | |
| 93 } | |
| 94 | |
| 95 LabelButtonBorder::~LabelButtonBorder() {} | |
| 96 | |
| 97 void LabelButtonBorder::Paint(const View& view, gfx::Canvas* canvas) { | |
| 98 const NativeThemeDelegate* native_theme_delegate = | |
| 99 static_cast<const LabelButton*>(&view); | |
| 100 gfx::Rect rect(native_theme_delegate->GetThemePaintRect()); | |
| 101 ui::NativeTheme::ExtraParams extra; | |
| 102 const gfx::Animation* animation = native_theme_delegate->GetThemeAnimation(); | |
| 103 ui::NativeTheme::State state = native_theme_delegate->GetThemeState(&extra); | |
| 104 | |
| 105 if (animation && animation->is_animating()) { | |
| 106 // Linearly interpolate background and foreground painters during animation. | |
| 107 const SkRect sk_rect = gfx::RectToSkRect(rect); | |
| 108 canvas->sk_canvas()->saveLayer(&sk_rect, NULL); | |
| 109 state = native_theme_delegate->GetBackgroundThemeState(&extra); | |
| 110 PaintHelper(this, canvas, state, rect, extra); | |
| 111 | |
| 112 SkPaint paint; | |
| 113 skia::RefPtr<SkXfermode> sk_lerp_xfer = | |
| 114 skia::AdoptRef(SkLerpXfermode::Create(animation->GetCurrentValue())); | |
| 115 paint.setXfermode(sk_lerp_xfer.get()); | |
| 116 canvas->sk_canvas()->saveLayer(&sk_rect, &paint); | |
| 117 state = native_theme_delegate->GetForegroundThemeState(&extra); | |
| 118 PaintHelper(this, canvas, state, rect, extra); | |
| 119 canvas->sk_canvas()->restore(); | |
| 120 | |
| 121 canvas->sk_canvas()->restore(); | |
| 122 } else { | |
| 123 PaintHelper(this, canvas, state, rect, extra); | |
| 124 } | |
| 125 } | |
| 126 | |
| 127 gfx::Insets LabelButtonBorder::GetInsets() const { | |
| 128 return insets_; | |
| 129 } | |
| 130 | |
| 131 gfx::Size LabelButtonBorder::GetMinimumSize() const { | |
| 132 gfx::Size minimum_size; | |
| 133 for (int i = 0; i < 2; ++i) { | |
| 134 for (int j = 0; j < Button::STATE_COUNT; ++j) { | |
| 135 if (painters_[i][j]) | |
| 136 minimum_size.SetToMax(painters_[i][j]->GetMinimumSize()); | |
| 137 } | |
| 138 } | |
| 139 return minimum_size; | |
| 140 } | |
| 141 | |
| 142 Painter* LabelButtonBorder::GetPainter(bool focused, | |
| 143 Button::ButtonState state) { | |
| 144 return painters_[focused ? 1 : 0][state].get(); | |
| 145 } | |
| 146 | |
| 147 void LabelButtonBorder::SetPainter(bool focused, | |
| 148 Button::ButtonState state, | |
| 149 Painter* painter) { | |
| 150 painters_[focused ? 1 : 0][state].reset(painter); | |
| 151 } | |
| 152 | |
| 153 } // namespace views | |
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