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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 
NativeThemePart(WebThemeEngine::Part part)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 
NativeThemeState(WebThemeEngine::State state)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 
GetNativeThemeExtraParams(WebThemeEngine::Part part,WebThemeEngine::State state,const WebThemeEngine::ExtraParams * extra_params,ui::NativeTheme::ExtraParams * native_theme_extra_params)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 
getSize(WebThemeEngine::Part part)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 
paint(blink::WebCanvas * canvas,WebThemeEngine::Part part,WebThemeEngine::State state,const blink::WebRect & rect,const WebThemeEngine::ExtraParams * extra_params)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