content/child/webthemeengine_impl_default.cc

   1 // Copyright 2014 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 "content/child/webthemeengine_impl_default.h"
   6
   7 #include "skia/ext/platform_canvas.h"
   8 #include "third_party/WebKit/public/platform/WebRect.h"
   9 #include "third_party/WebKit/public/platform/WebSize.h"
  10 #include "ui/native_theme/native_theme.h"
  11
  12 using blink::WebCanvas;
  13 using blink::WebColor;
  14 using blink::WebRect;
  15 using blink::WebThemeEngine;
  16
  17 namespace content {
  18 namespace {
  19
  20 #if defined(OS_WIN)
  21 // The scrollbar metrics default to 17 dips which is the default value on
  22 // Windows in most cases.
  23 int32 g_vertical_scroll_bar_width = 17;
  24
  25 // The height of a horizontal scroll bar in dips.
  26 int32 g_horizontal_scroll_bar_height = 17;
  27
  28 // The height of the arrow bitmap on a vertical scroll bar in dips.
  29 int32 g_vertical_arrow_bitmap_height = 17;
  30
  31 // The width of the arrow bitmap on a horizontal scroll bar in dips.
  32 int32 g_horizontal_arrow_bitmap_width = 17;
  33 #endif
  34
  35 }  // namespace
  36
  37 static ui::NativeTheme::Part NativeThemePart(
  38     WebThemeEngine::Part part) {
  39   switch (part) {
  40     case WebThemeEngine::PartScrollbarDownArrow:
  41       return ui::NativeTheme::kScrollbarDownArrow;
  42     case WebThemeEngine::PartScrollbarLeftArrow:
  43       return ui::NativeTheme::kScrollbarLeftArrow;
  44     case WebThemeEngine::PartScrollbarRightArrow:
  45       return ui::NativeTheme::kScrollbarRightArrow;
  46     case WebThemeEngine::PartScrollbarUpArrow:
  47       return ui::NativeTheme::kScrollbarUpArrow;
  48     case WebThemeEngine::PartScrollbarHorizontalThumb:
  49       return ui::NativeTheme::kScrollbarHorizontalThumb;
  50     case WebThemeEngine::PartScrollbarVerticalThumb:
  51       return ui::NativeTheme::kScrollbarVerticalThumb;
  52     case WebThemeEngine::PartScrollbarHorizontalTrack:
  53       return ui::NativeTheme::kScrollbarHorizontalTrack;
  54     case WebThemeEngine::PartScrollbarVerticalTrack:
  55       return ui::NativeTheme::kScrollbarVerticalTrack;
  56     case WebThemeEngine::PartScrollbarCorner:
  57       return ui::NativeTheme::kScrollbarCorner;
  58     case WebThemeEngine::PartCheckbox:
  59       return ui::NativeTheme::kCheckbox;
  60     case WebThemeEngine::PartRadio:
  61       return ui::NativeTheme::kRadio;
  62     case WebThemeEngine::PartButton:
  63       return ui::NativeTheme::kPushButton;
  64     case WebThemeEngine::PartTextField:
  65       return ui::NativeTheme::kTextField;
  66     case WebThemeEngine::PartMenuList:
  67       return ui::NativeTheme::kMenuList;
  68     case WebThemeEngine::PartSliderTrack:
  69       return ui::NativeTheme::kSliderTrack;
  70     case WebThemeEngine::PartSliderThumb:
  71       return ui::NativeTheme::kSliderThumb;
  72     case WebThemeEngine::PartInnerSpinButton:
  73       return ui::NativeTheme::kInnerSpinButton;
  74     case WebThemeEngine::PartProgressBar:
  75       return ui::NativeTheme::kProgressBar;
  76     default:
  77       return ui::NativeTheme::kScrollbarDownArrow;
  78   }
  79 }
  80
  81 static ui::NativeTheme::State NativeThemeState(
  82     WebThemeEngine::State state) {
  83   switch (state) {
  84     case WebThemeEngine::StateDisabled:
  85       return ui::NativeTheme::kDisabled;
  86     case WebThemeEngine::StateHover:
  87       return ui::NativeTheme::kHovered;
  88     case WebThemeEngine::StateNormal:
  89       return ui::NativeTheme::kNormal;
  90     case WebThemeEngine::StatePressed:
  91       return ui::NativeTheme::kPressed;
  92     default:
  93       return ui::NativeTheme::kDisabled;
  94   }
  95 }
  96
  97 static void GetNativeThemeExtraParams(
  98     WebThemeEngine::Part part,
  99     WebThemeEngine::State state,
 100     const WebThemeEngine::ExtraParams* extra_params,
 101     ui::NativeTheme::ExtraParams* native_theme_extra_params) {
 102   switch (part) {
 103     case WebThemeEngine::PartScrollbarHorizontalTrack:
 104     case WebThemeEngine::PartScrollbarVerticalTrack:
 105       native_theme_extra_params->scrollbar_track.track_x =
 106           extra_params->scrollbarTrack.trackX;
 107       native_theme_extra_params->scrollbar_track.track_y =
 108           extra_params->scrollbarTrack.trackY;
 109       native_theme_extra_params->scrollbar_track.track_width =
 110           extra_params->scrollbarTrack.trackWidth;
 111       native_theme_extra_params->scrollbar_track.track_height =
 112           extra_params->scrollbarTrack.trackHeight;
 113       break;
 114     case WebThemeEngine::PartCheckbox:
 115       native_theme_extra_params->button.checked = extra_params->button.checked;
 116       native_theme_extra_params->button.indeterminate =
 117           extra_params->button.indeterminate;
 118       break;
 119     case WebThemeEngine::PartRadio:
 120       native_theme_extra_params->button.checked = extra_params->button.checked;
 121       break;
 122     case WebThemeEngine::PartButton:
 123       native_theme_extra_params->button.is_default =
 124           extra_params->button.isDefault;
 125       native_theme_extra_params->button.has_border =
 126           extra_params->button.hasBorder;
 127       // Native buttons have a different focus style.
 128       native_theme_extra_params->button.is_focused = false;
 129       native_theme_extra_params->button.background_color =
 130           extra_params->button.backgroundColor;
 131       break;
 132     case WebThemeEngine::PartTextField:
 133       native_theme_extra_params->text_field.is_text_area =
 134           extra_params->textField.isTextArea;
 135       native_theme_extra_params->text_field.is_listbox =
 136           extra_params->textField.isListbox;
 137       native_theme_extra_params->text_field.background_color =
 138           extra_params->textField.backgroundColor;
 139       break;
 140     case WebThemeEngine::PartMenuList:
 141       native_theme_extra_params->menu_list.has_border =
 142           extra_params->menuList.hasBorder;
 143       native_theme_extra_params->menu_list.has_border_radius =
 144           extra_params->menuList.hasBorderRadius;
 145       native_theme_extra_params->menu_list.arrow_x =
 146           extra_params->menuList.arrowX;
 147       native_theme_extra_params->menu_list.arrow_y =
 148           extra_params->menuList.arrowY;
 149       native_theme_extra_params->menu_list.background_color =
 150           extra_params->menuList.backgroundColor;
 151       break;
 152     case WebThemeEngine::PartSliderTrack:
 153     case WebThemeEngine::PartSliderThumb:
 154       native_theme_extra_params->slider.vertical =
 155           extra_params->slider.vertical;
 156       native_theme_extra_params->slider.in_drag = extra_params->slider.inDrag;
 157       break;
 158     case WebThemeEngine::PartInnerSpinButton:
 159       native_theme_extra_params->inner_spin.spin_up =
 160           extra_params->innerSpin.spinUp;
 161       native_theme_extra_params->inner_spin.read_only =
 162           extra_params->innerSpin.readOnly;
 163       break;
 164     case WebThemeEngine::PartProgressBar:
 165       native_theme_extra_params->progress_bar.determinate =
 166           extra_params->progressBar.determinate;
 167       native_theme_extra_params->progress_bar.value_rect_x =
 168           extra_params->progressBar.valueRectX;
 169       native_theme_extra_params->progress_bar.value_rect_y =
 170           extra_params->progressBar.valueRectY;
 171       native_theme_extra_params->progress_bar.value_rect_width =
 172           extra_params->progressBar.valueRectWidth;
 173       native_theme_extra_params->progress_bar.value_rect_height =
 174           extra_params->progressBar.valueRectHeight;
 175       break;
 176     default:
 177       break;  // Parts that have no extra params get here.
 178   }
 179 }
 180
 181 blink::WebSize WebThemeEngineImpl::getSize(WebThemeEngine::Part part) {
 182   ui::NativeTheme::ExtraParams extra;
 183   ui::NativeTheme::Part native_theme_part = NativeThemePart(part);
 184 #if defined(OS_WIN)
 185   switch (native_theme_part) {
 186     case ui::NativeTheme::kScrollbarDownArrow:
 187     case ui::NativeTheme::kScrollbarLeftArrow:
 188     case ui::NativeTheme::kScrollbarRightArrow:
 189     case ui::NativeTheme::kScrollbarUpArrow:
 190     case ui::NativeTheme::kScrollbarHorizontalThumb:
 191     case ui::NativeTheme::kScrollbarVerticalThumb:
 192     case ui::NativeTheme::kScrollbarHorizontalTrack:
 193     case ui::NativeTheme::kScrollbarVerticalTrack: {
 194       return gfx::Size(g_vertical_scroll_bar_width,
 195                        g_vertical_scroll_bar_width);
 196     }
 197
 198     default:
 199       break;
 200   }
 201 #endif
 202   return ui::NativeTheme::instance()->GetPartSize(native_theme_part,
 203                                                   ui::NativeTheme::kNormal,
 204                                                   extra);
 205 }
 206
 207 void WebThemeEngineImpl::paint(
 208     blink::WebCanvas* canvas,
 209     WebThemeEngine::Part part,
 210     WebThemeEngine::State state,
 211     const blink::WebRect& rect,
 212     const WebThemeEngine::ExtraParams* extra_params) {
 213   ui::NativeTheme::ExtraParams native_theme_extra_params;
 214   GetNativeThemeExtraParams(
 215       part, state, extra_params, &native_theme_extra_params);
 216   ui::NativeTheme::instance()->Paint(
 217       canvas,
 218       NativeThemePart(part),
 219       NativeThemeState(state),
 220       gfx::Rect(rect),
 221       native_theme_extra_params);
 222 }
 223
 224 void WebThemeEngineImpl::paintStateTransition(blink::WebCanvas* canvas,
 225                                               WebThemeEngine::Part part,
 226                                               WebThemeEngine::State startState,
 227                                               WebThemeEngine::State endState,
 228                                               double progress,
 229                                               const blink::WebRect& rect) {
 230   ui::NativeTheme::instance()->PaintStateTransition(
 231       canvas,
 232       NativeThemePart(part),
 233       NativeThemeState(startState),
 234       NativeThemeState(endState),
 235       progress,
 236       gfx::Rect(rect));
 237 }
 238
 239 #if defined(OS_WIN)
 240 // static
 241 void WebThemeEngineImpl::cacheScrollBarMetrics(
 242     int32 vertical_scroll_bar_width,
 243     int32 horizontal_scroll_bar_height,
 244     int32 vertical_arrow_bitmap_height,
 245     int32 horizontal_arrow_bitmap_width) {
 246   g_vertical_scroll_bar_width = vertical_scroll_bar_width;
 247   g_horizontal_scroll_bar_height = horizontal_scroll_bar_height;
 248   g_vertical_arrow_bitmap_height = vertical_arrow_bitmap_height;
 249   g_horizontal_arrow_bitmap_width = horizontal_arrow_bitmap_width;
 250 }
 251 #endif
 252
 253 }  // namespace content