components/html_viewer/web_theme_engine_impl.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 "components/html_viewer/web_theme_engine_impl.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 html_viewer {
  18 namespace {
  19
  20 ui::NativeTheme::Part NativeThemePart(WebThemeEngine::Part part) {
  21   switch (part) {
  22     case WebThemeEngine::PartScrollbarDownArrow:
  23       return ui::NativeTheme::kScrollbarDownArrow;
  24     case WebThemeEngine::PartScrollbarLeftArrow:
  25       return ui::NativeTheme::kScrollbarLeftArrow;
  26     case WebThemeEngine::PartScrollbarRightArrow:
  27       return ui::NativeTheme::kScrollbarRightArrow;
  28     case WebThemeEngine::PartScrollbarUpArrow:
  29       return ui::NativeTheme::kScrollbarUpArrow;
  30     case WebThemeEngine::PartScrollbarHorizontalThumb:
  31       return ui::NativeTheme::kScrollbarHorizontalThumb;
  32     case WebThemeEngine::PartScrollbarVerticalThumb:
  33       return ui::NativeTheme::kScrollbarVerticalThumb;
  34     case WebThemeEngine::PartScrollbarHorizontalTrack:
  35       return ui::NativeTheme::kScrollbarHorizontalTrack;
  36     case WebThemeEngine::PartScrollbarVerticalTrack:
  37       return ui::NativeTheme::kScrollbarVerticalTrack;
  38     case WebThemeEngine::PartScrollbarCorner:
  39       return ui::NativeTheme::kScrollbarCorner;
  40     case WebThemeEngine::PartCheckbox:
  41       return ui::NativeTheme::kCheckbox;
  42     case WebThemeEngine::PartRadio:
  43       return ui::NativeTheme::kRadio;
  44     case WebThemeEngine::PartButton:
  45       return ui::NativeTheme::kPushButton;
  46     case WebThemeEngine::PartTextField:
  47       return ui::NativeTheme::kTextField;
  48     case WebThemeEngine::PartMenuList:
  49       return ui::NativeTheme::kMenuList;
  50     case WebThemeEngine::PartSliderTrack:
  51       return ui::NativeTheme::kSliderTrack;
  52     case WebThemeEngine::PartSliderThumb:
  53       return ui::NativeTheme::kSliderThumb;
  54     case WebThemeEngine::PartInnerSpinButton:
  55       return ui::NativeTheme::kInnerSpinButton;
  56     case WebThemeEngine::PartProgressBar:
  57       return ui::NativeTheme::kProgressBar;
  58     default:
  59       return ui::NativeTheme::kScrollbarDownArrow;
  60   }
  61 }
  62
  63 ui::NativeTheme::State NativeThemeState(WebThemeEngine::State state) {
  64   switch (state) {
  65     case WebThemeEngine::StateDisabled:
  66       return ui::NativeTheme::kDisabled;
  67     case WebThemeEngine::StateHover:
  68       return ui::NativeTheme::kHovered;
  69     case WebThemeEngine::StateNormal:
  70       return ui::NativeTheme::kNormal;
  71     case WebThemeEngine::StatePressed:
  72       return ui::NativeTheme::kPressed;
  73     default:
  74       return ui::NativeTheme::kDisabled;
  75   }
  76 }
  77
  78 void GetNativeThemeExtraParams(
  79     WebThemeEngine::Part part,
  80     WebThemeEngine::State state,
  81     const WebThemeEngine::ExtraParams* extra_params,
  82     ui::NativeTheme::ExtraParams* native_theme_extra_params) {
  83   switch (part) {
  84     case WebThemeEngine::PartScrollbarHorizontalTrack:
  85     case WebThemeEngine::PartScrollbarVerticalTrack:
  86       native_theme_extra_params->scrollbar_track.track_x =
  87           extra_params->scrollbarTrack.trackX;
  88       native_theme_extra_params->scrollbar_track.track_y =
  89           extra_params->scrollbarTrack.trackY;
  90       native_theme_extra_params->scrollbar_track.track_width =
  91           extra_params->scrollbarTrack.trackWidth;
  92       native_theme_extra_params->scrollbar_track.track_height =
  93           extra_params->scrollbarTrack.trackHeight;
  94       break;
  95     case WebThemeEngine::PartCheckbox:
  96       native_theme_extra_params->button.checked = extra_params->button.checked;
  97       native_theme_extra_params->button.indeterminate =
  98           extra_params->button.indeterminate;
  99       break;
 100     case WebThemeEngine::PartRadio:
 101       native_theme_extra_params->button.checked = extra_params->button.checked;
 102       break;
 103     case WebThemeEngine::PartButton:
 104       native_theme_extra_params->button.is_default =
 105           extra_params->button.isDefault;
 106       native_theme_extra_params->button.has_border =
 107           extra_params->button.hasBorder;
 108       // Native buttons have a different focus style.
 109       native_theme_extra_params->button.is_focused = false;
 110       native_theme_extra_params->button.background_color =
 111           extra_params->button.backgroundColor;
 112       break;
 113     case WebThemeEngine::PartTextField:
 114       native_theme_extra_params->text_field.is_text_area =
 115           extra_params->textField.isTextArea;
 116       native_theme_extra_params->text_field.is_listbox =
 117           extra_params->textField.isListbox;
 118       native_theme_extra_params->text_field.background_color =
 119           extra_params->textField.backgroundColor;
 120       break;
 121     case WebThemeEngine::PartMenuList:
 122       native_theme_extra_params->menu_list.has_border =
 123           extra_params->menuList.hasBorder;
 124       native_theme_extra_params->menu_list.has_border_radius =
 125           extra_params->menuList.hasBorderRadius;
 126       native_theme_extra_params->menu_list.arrow_x =
 127           extra_params->menuList.arrowX;
 128       native_theme_extra_params->menu_list.arrow_y =
 129           extra_params->menuList.arrowY;
 130       native_theme_extra_params->menu_list.background_color =
 131           extra_params->menuList.backgroundColor;
 132       break;
 133     case WebThemeEngine::PartSliderTrack:
 134     case WebThemeEngine::PartSliderThumb:
 135       native_theme_extra_params->slider.vertical =
 136           extra_params->slider.vertical;
 137       native_theme_extra_params->slider.in_drag = extra_params->slider.inDrag;
 138       break;
 139     case WebThemeEngine::PartInnerSpinButton:
 140       native_theme_extra_params->inner_spin.spin_up =
 141           extra_params->innerSpin.spinUp;
 142       native_theme_extra_params->inner_spin.read_only =
 143           extra_params->innerSpin.readOnly;
 144       break;
 145     case WebThemeEngine::PartProgressBar:
 146       native_theme_extra_params->progress_bar.determinate =
 147           extra_params->progressBar.determinate;
 148       native_theme_extra_params->progress_bar.value_rect_x =
 149           extra_params->progressBar.valueRectX;
 150       native_theme_extra_params->progress_bar.value_rect_y =
 151           extra_params->progressBar.valueRectY;
 152       native_theme_extra_params->progress_bar.value_rect_width =
 153           extra_params->progressBar.valueRectWidth;
 154       native_theme_extra_params->progress_bar.value_rect_height =
 155           extra_params->progressBar.valueRectHeight;
 156       break;
 157     default:
 158       break;  // Parts that have no extra params get here.
 159   }
 160 }
 161
 162 }  // namespace
 163
 164 blink::WebSize WebThemeEngineImpl::getSize(WebThemeEngine::Part part) {
 165   ui::NativeTheme::ExtraParams extra;
 166   return ui::NativeTheme::instance()->GetPartSize(NativeThemePart(part),
 167                                                    ui::NativeTheme::kNormal,
 168                                                    extra);
 169 }
 170
 171 void WebThemeEngineImpl::paint(
 172     blink::WebCanvas* canvas,
 173     WebThemeEngine::Part part,
 174     WebThemeEngine::State state,
 175     const blink::WebRect& rect,
 176     const WebThemeEngine::ExtraParams* extra_params) {
 177   ui::NativeTheme::ExtraParams native_theme_extra_params;
 178   GetNativeThemeExtraParams(
 179       part, state, extra_params, &native_theme_extra_params);
 180   ui::NativeTheme::instance()->Paint(
 181       canvas,
 182       NativeThemePart(part),
 183       NativeThemeState(state),
 184       gfx::Rect(rect),
 185       native_theme_extra_params);
 186 }
 187
 188 void WebThemeEngineImpl::paintStateTransition(blink::WebCanvas* canvas,
 189                                               WebThemeEngine::Part part,
 190                                               WebThemeEngine::State startState,
 191                                               WebThemeEngine::State endState,
 192                                               double progress,
 193                                               const blink::WebRect& rect) {
 194   ui::NativeTheme::instance()->PaintStateTransition(
 195       canvas,
 196       NativeThemePart(part),
 197       NativeThemeState(startState),
 198       NativeThemeState(endState),
 199       progress,
 200       gfx::Rect(rect));
 201 }
 202
 203 }  // namespace html_viewer