src/ui/native_theme/common_theme.cc

   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/native_theme/common_theme.h"
   6
   7 #include "base/logging.h"
   8 #include "third_party/skia/include/core/SkCanvas.h"
   9 #include "ui/base/resource/resource_bundle.h"
  10 #include "ui/gfx/canvas.h"
  11 #include "ui/gfx/color_utils.h"
  12 #include "ui/gfx/image/image_skia.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/resources/grit/ui_resources.h"
  17
  18 namespace {
  19
  20 // Theme colors returned by GetSystemColor().
  21
  22 // MenuItem:
  23 const SkColor kMenuBackgroundColor = SK_ColorWHITE;
  24 const SkColor kMenuHighlightBackgroundColor = SkColorSetRGB(0x42, 0x81, 0xF4);
  25 const SkColor kMenuInvertedSchemeHighlightBackgroundColor =
  26     SkColorSetRGB(48, 48, 48);
  27 const SkColor kMenuBorderColor = SkColorSetRGB(0xBA, 0xBA, 0xBA);
  28 const SkColor kEnabledMenuButtonBorderColor = SkColorSetARGB(36, 0, 0, 0);
  29 const SkColor kFocusedMenuButtonBorderColor = SkColorSetARGB(72, 0, 0, 0);
  30 const SkColor kHoverMenuButtonBorderColor = SkColorSetARGB(72, 0, 0, 0);
  31 const SkColor kMenuSeparatorColor = SkColorSetRGB(0xE9, 0xE9, 0xE9);
  32 const SkColor kEnabledMenuItemForegroundColor = SK_ColorBLACK;
  33 const SkColor kDisabledMenuItemForegroundColor = SkColorSetRGB(161, 161, 146);
  34 const SkColor kHoverMenuItemBackgroundColor =
  35     SkColorSetARGB(204, 255, 255, 255);
  36 // Button:
  37 const SkColor kButtonHoverBackgroundColor = SkColorSetRGB(0xEA, 0xEA, 0xEA);
  38 const SkColor kBlueButtonEnabledColor = SK_ColorWHITE;
  39 const SkColor kBlueButtonDisabledColor = SK_ColorWHITE;
  40 const SkColor kBlueButtonPressedColor = SK_ColorWHITE;
  41 const SkColor kBlueButtonHoverColor = SK_ColorWHITE;
  42 const SkColor kBlueButtonShadowColor = SkColorSetRGB(0x53, 0x8C, 0xEA);
  43
  44 }  // namespace
  45
  46 namespace ui {
  47
  48 bool CommonThemeGetSystemColor(NativeTheme::ColorId color_id, SkColor* color) {
  49   switch (color_id) {
  50     // MenuItem
  51     case NativeTheme::kColorId_MenuBorderColor:
  52       *color = kMenuBorderColor;
  53       break;
  54     case NativeTheme::kColorId_EnabledMenuButtonBorderColor:
  55       *color = kEnabledMenuButtonBorderColor;
  56       break;
  57     case NativeTheme::kColorId_FocusedMenuButtonBorderColor:
  58       *color = kFocusedMenuButtonBorderColor;
  59       break;
  60     case NativeTheme::kColorId_HoverMenuButtonBorderColor:
  61       *color = kHoverMenuButtonBorderColor;
  62       break;
  63     case NativeTheme::kColorId_MenuSeparatorColor:
  64       *color = kMenuSeparatorColor;
  65       break;
  66     case NativeTheme::kColorId_MenuBackgroundColor:
  67       *color = kMenuBackgroundColor;
  68       break;
  69     case NativeTheme::kColorId_FocusedMenuItemBackgroundColor:
  70       *color = kMenuHighlightBackgroundColor;
  71       break;
  72     case NativeTheme::kColorId_HoverMenuItemBackgroundColor:
  73       *color = kHoverMenuItemBackgroundColor;
  74       break;
  75     case NativeTheme::kColorId_EnabledMenuItemForegroundColor:
  76       *color = kEnabledMenuItemForegroundColor;
  77       break;
  78     case NativeTheme::kColorId_DisabledMenuItemForegroundColor:
  79       *color = kDisabledMenuItemForegroundColor;
  80       break;
  81     case NativeTheme::kColorId_DisabledEmphasizedMenuItemForegroundColor:
  82       *color = SK_ColorBLACK;
  83       break;
  84     case NativeTheme::kColorId_SelectedMenuItemForegroundColor:
  85       *color = SK_ColorWHITE;
  86       break;
  87     case NativeTheme::kColorId_ButtonDisabledColor:
  88       *color = kDisabledMenuItemForegroundColor;
  89       break;
  90     // Button
  91     case NativeTheme::kColorId_ButtonHoverBackgroundColor:
  92       *color = kButtonHoverBackgroundColor;
  93       break;
  94     case NativeTheme::kColorId_BlueButtonEnabledColor:
  95       *color = kBlueButtonEnabledColor;
  96       break;
  97     case NativeTheme::kColorId_BlueButtonDisabledColor:
  98       *color = kBlueButtonDisabledColor;
  99       break;
 100     case NativeTheme::kColorId_BlueButtonPressedColor:
 101       *color = kBlueButtonPressedColor;
 102       break;
 103     case NativeTheme::kColorId_BlueButtonHoverColor:
 104       *color = kBlueButtonHoverColor;
 105       break;
 106     case NativeTheme::kColorId_BlueButtonShadowColor:
 107       *color = kBlueButtonShadowColor;
 108       break;
 109     default:
 110       return false;
 111   }
 112
 113   if (gfx::IsInvertedColorScheme()) {
 114     switch (color_id) {
 115       case NativeTheme::kColorId_FocusedMenuItemBackgroundColor:
 116         *color = kMenuInvertedSchemeHighlightBackgroundColor;
 117         break;
 118       default:
 119         *color = color_utils::InvertColor(*color);
 120     }
 121   }
 122   return true;
 123 }
 124
 125 gfx::Size CommonThemeGetPartSize(NativeTheme::Part part,
 126                                  NativeTheme::State state,
 127                                  const NativeTheme::ExtraParams& extra) {
 128   gfx::Size size;
 129   switch (part) {
 130     case NativeTheme::kComboboxArrow:
 131       return ui::ResourceBundle::GetSharedInstance().GetImageNamed(
 132           IDR_MENU_DROPARROW).Size();
 133
 134     case NativeTheme::kMenuCheck: {
 135       const gfx::ImageSkia* check =
 136           ui::ResourceBundle::GetSharedInstance().GetImageNamed(
 137               IDR_MENU_CHECK_CHECKED).ToImageSkia();
 138       size.SetSize(check->width(), check->height());
 139       break;
 140     }
 141     default:
 142       break;
 143   }
 144
 145   return size;
 146 }
 147
 148 void CommonThemePaintComboboxArrow(SkCanvas* canvas, const gfx::Rect& rect) {
 149   gfx::ImageSkia* arrow = ui::ResourceBundle::GetSharedInstance().
 150       GetImageSkiaNamed(IDR_MENU_DROPARROW);
 151   CommonThemeCreateCanvas(canvas)->DrawImageInt(*arrow, rect.x(), rect.y());
 152 }
 153
 154 void CommonThemePaintMenuSeparator(SkCanvas* canvas, const gfx::Rect& rect) {
 155   SkColor color;
 156   CommonThemeGetSystemColor(NativeTheme::kColorId_MenuSeparatorColor, &color);
 157   SkPaint paint;
 158   paint.setColor(kMenuSeparatorColor);
 159   int position_y = rect.y() + rect.height() / 2;
 160   canvas->drawLine(rect.x(), position_y, rect.right(), position_y, paint);
 161 }
 162
 163 void CommonThemePaintMenuGutter(SkCanvas* canvas, const gfx::Rect& rect) {
 164   SkColor color;
 165   CommonThemeGetSystemColor(NativeTheme::kColorId_MenuSeparatorColor, &color);
 166   SkPaint paint;
 167   paint.setColor(kMenuSeparatorColor);
 168   int position_x = rect.x() + rect.width() / 2;
 169   canvas->drawLine(position_x, rect.y(), position_x, rect.bottom(), paint);
 170 }
 171
 172 void CommonThemePaintMenuBackground(SkCanvas* canvas, const gfx::Rect& rect) {
 173   SkColor color;
 174   CommonThemeGetSystemColor(NativeTheme::kColorId_MenuBackgroundColor, &color);
 175   SkPaint paint;
 176   paint.setColor(color);
 177   canvas->drawRect(gfx::RectToSkRect(rect), paint);
 178 }
 179
 180 void CommonThemePaintMenuItemBackground(SkCanvas* canvas,
 181                                         NativeTheme::State state,
 182                                         const gfx::Rect& rect) {
 183   SkColor color;
 184   SkPaint paint;
 185   switch (state) {
 186     case NativeTheme::kNormal:
 187     case NativeTheme::kDisabled:
 188       CommonThemeGetSystemColor(NativeTheme::kColorId_MenuBackgroundColor,
 189                                 &color);
 190       paint.setColor(color);
 191       break;
 192     case NativeTheme::kHovered:
 193       CommonThemeGetSystemColor(
 194           NativeTheme::kColorId_FocusedMenuItemBackgroundColor, &color);
 195       paint.setColor(color);
 196       break;
 197     default:
 198       NOTREACHED() << "Invalid state " << state;
 199       break;
 200   }
 201   canvas->drawRect(gfx::RectToSkRect(rect), paint);
 202 }
 203
 204 // static
 205 scoped_ptr<gfx::Canvas> CommonThemeCreateCanvas(SkCanvas* sk_canvas) {
 206   // TODO(pkotwicz): Do something better and don't infer device
 207   // scale factor from canvas scale.
 208   SkMatrix m = sk_canvas->getTotalMatrix();
 209   float device_scale = static_cast<float>(SkScalarAbs(m.getScaleX()));
 210   return scoped_ptr<gfx::Canvas>(
 211       gfx::Canvas::CreateCanvasWithoutScaling(sk_canvas, device_scale));
 212 }
 213
 214 }  // namespace ui