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      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_android.h"
      6 
      7 #include "base/logging.h"
      8 #include "skia/ext/platform_canvas.h"
      9 #include "third_party/WebKit/public/platform/WebRect.h"
     10 #include "third_party/WebKit/public/platform/WebSize.h"
     11 #include "ui/native_theme/native_theme.h"
     12 
     13 using blink::WebCanvas;
     14 using blink::WebColor;
     15 using blink::WebRect;
     16 using blink::WebThemeEngine;
     17 
     18 namespace content {
     19 
     20 static ui::NativeTheme::Part NativeThemePart(
     21     WebThemeEngine::Part part) {
     22   switch (part) {
     23     case WebThemeEngine::PartScrollbarDownArrow:
     24       return ui::NativeTheme::kScrollbarDownArrow;
     25     case WebThemeEngine::PartScrollbarLeftArrow:
     26       return ui::NativeTheme::kScrollbarLeftArrow;
     27     case WebThemeEngine::PartScrollbarRightArrow:
     28       return ui::NativeTheme::kScrollbarRightArrow;
     29     case WebThemeEngine::PartScrollbarUpArrow:
     30       return ui::NativeTheme::kScrollbarUpArrow;
     31     case WebThemeEngine::PartScrollbarHorizontalThumb:
     32     case WebThemeEngine::PartScrollbarVerticalThumb:
     33     case WebThemeEngine::PartScrollbarHorizontalTrack:
     34     case WebThemeEngine::PartScrollbarVerticalTrack:
     35     case WebThemeEngine::PartScrollbarCorner:
     36       // Android doesn't draw scrollbars.
     37       NOTREACHED();
     38       return static_cast<ui::NativeTheme::Part>(0);
     39     case WebThemeEngine::PartCheckbox:
     40       return ui::NativeTheme::kCheckbox;
     41     case WebThemeEngine::PartRadio:
     42       return ui::NativeTheme::kRadio;
     43     case WebThemeEngine::PartButton:
     44       return ui::NativeTheme::kPushButton;
     45     case WebThemeEngine::PartTextField:
     46       return ui::NativeTheme::kTextField;
     47     case WebThemeEngine::PartMenuList:
     48       return ui::NativeTheme::kMenuList;
     49     case WebThemeEngine::PartSliderTrack:
     50       return ui::NativeTheme::kSliderTrack;
     51     case WebThemeEngine::PartSliderThumb:
     52       return ui::NativeTheme::kSliderThumb;
     53     case WebThemeEngine::PartInnerSpinButton:
     54       return ui::NativeTheme::kInnerSpinButton;
     55     case WebThemeEngine::PartProgressBar:
     56       return ui::NativeTheme::kProgressBar;
     57     default:
     58       return ui::NativeTheme::kScrollbarDownArrow;
     59   }
     60 }
     61 
     62 static ui::NativeTheme::State NativeThemeState(
     63     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 static 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       // Android doesn't draw scrollbars.
     87       NOTREACHED();
     88       break;
     89     case WebThemeEngine::PartCheckbox:
     90       native_theme_extra_params->button.checked = extra_params->button.checked;
     91       native_theme_extra_params->button.indeterminate =
     92           extra_params->button.indeterminate;
     93       break;
     94     case WebThemeEngine::PartRadio:
     95       native_theme_extra_params->button.checked = extra_params->button.checked;
     96       break;
     97     case WebThemeEngine::PartButton:
     98       native_theme_extra_params->button.is_default =
     99           extra_params->button.isDefault;
    100       native_theme_extra_params->button.has_border =
    101           extra_params->button.hasBorder;
    102       // Native buttons have a different focus style.
    103       native_theme_extra_params->button.is_focused = false;
    104       native_theme_extra_params->button.background_color =
    105           extra_params->button.backgroundColor;
    106       break;
    107     case WebThemeEngine::PartTextField:
    108       native_theme_extra_params->text_field.is_text_area =
    109           extra_params->textField.isTextArea;
    110       native_theme_extra_params->text_field.is_listbox =
    111           extra_params->textField.isListbox;
    112       native_theme_extra_params->text_field.background_color =
    113           extra_params->textField.backgroundColor;
    114       break;
    115     case WebThemeEngine::PartMenuList:
    116       native_theme_extra_params->menu_list.has_border =
    117           extra_params->menuList.hasBorder;
    118       native_theme_extra_params->menu_list.has_border_radius =
    119           extra_params->menuList.hasBorderRadius;
    120       native_theme_extra_params->menu_list.arrow_x =
    121           extra_params->menuList.arrowX;
    122       native_theme_extra_params->menu_list.arrow_y =
    123           extra_params->menuList.arrowY;
    124       native_theme_extra_params->menu_list.background_color =
    125           extra_params->menuList.backgroundColor;
    126       break;
    127     case WebThemeEngine::PartSliderTrack:
    128     case WebThemeEngine::PartSliderThumb:
    129       native_theme_extra_params->slider.vertical =
    130           extra_params->slider.vertical;
    131       native_theme_extra_params->slider.in_drag = extra_params->slider.inDrag;
    132       break;
    133     case WebThemeEngine::PartInnerSpinButton:
    134       native_theme_extra_params->inner_spin.spin_up =
    135           extra_params->innerSpin.spinUp;
    136       native_theme_extra_params->inner_spin.read_only =
    137           extra_params->innerSpin.readOnly;
    138       break;
    139     case WebThemeEngine::PartProgressBar:
    140       native_theme_extra_params->progress_bar.determinate =
    141           extra_params->progressBar.determinate;
    142       native_theme_extra_params->progress_bar.value_rect_x =
    143           extra_params->progressBar.valueRectX;
    144       native_theme_extra_params->progress_bar.value_rect_y =
    145           extra_params->progressBar.valueRectY;
    146       native_theme_extra_params->progress_bar.value_rect_width =
    147           extra_params->progressBar.valueRectWidth;
    148       native_theme_extra_params->progress_bar.value_rect_height =
    149           extra_params->progressBar.valueRectHeight;
    150       break;
    151     default:
    152       break;  // Parts that have no extra params get here.
    153   }
    154 }
    155 
    156 blink::WebSize WebThemeEngineImpl::getSize(WebThemeEngine::Part part) {
    157   ui::NativeTheme::ExtraParams extra;
    158   return ui::NativeTheme::instance()->GetPartSize(
    159       NativeThemePart(part), ui::NativeTheme::kNormal, extra);
    160 }
    161 
    162 void WebThemeEngineImpl::paint(
    163     blink::WebCanvas* canvas,
    164     WebThemeEngine::Part part,
    165     WebThemeEngine::State state,
    166     const blink::WebRect& rect,
    167     const WebThemeEngine::ExtraParams* extra_params) {
    168   ui::NativeTheme::ExtraParams native_theme_extra_params;
    169   GetNativeThemeExtraParams(
    170       part, state, extra_params, &native_theme_extra_params);
    171   ui::NativeTheme::instance()->Paint(
    172       canvas,
    173       NativeThemePart(part),
    174       NativeThemeState(state),
    175       gfx::Rect(rect),
    176       native_theme_extra_params);
    177 }
    178 }  // namespace content
    179