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1 /*
2  * This file is part of the WebKit project.
3  *
4  * Copyright (C) 2006 Apple Computer, Inc.
5  * Copyright (C) 2006 Michael Emmel mike.emmel@gmail.com
6  * Copyright (C) 2007 Holger Hans Peter Freyther
7  * Copyright (C) 2007 Alp Toker <alp@atoker.com>
8  * Copyright (C) 2008, 2009 Google, Inc.
9  * All rights reserved.
10  *
11  * This library is free software; you can redistribute it and/or
12  * modify it under the terms of the GNU Library General Public
13  * License as published by the Free Software Foundation; either
14  * version 2 of the License, or (at your option) any later version.
15  *
16  * This library is distributed in the hope that it will be useful,
17  * but WITHOUT ANY WARRANTY; without even the implied warranty of
18  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
19  * Library General Public License for more details.
20  *
21  * You should have received a copy of the GNU Library General Public License
22  * along with this library; see the file COPYING.LIB.  If not, write to
23  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
24  * Boston, MA 02110-1301, USA.
25  *
26  */
27 
28 #ifndef RenderThemeChromiumSkia_h
29 #define RenderThemeChromiumSkia_h
30 
31 #include "RenderTheme.h"
32 
33 namespace WebCore {
34 
35     class RenderThemeChromiumSkia : public RenderTheme {
36     public:
37         RenderThemeChromiumSkia();
38         virtual ~RenderThemeChromiumSkia();
39 
40         virtual String extraDefaultStyleSheet();
41         virtual String extraQuirksStyleSheet();
42 #if ENABLE(VIDEO)
43         virtual String extraMediaControlsStyleSheet();
44 #endif
45 
46         // A method asking if the theme's controls actually care about redrawing when hovered.
47         virtual bool supportsHover(const RenderStyle*) const;
48 
49         // A method asking if the theme is able to draw the focus ring.
50         virtual bool supportsFocusRing(const RenderStyle*) const;
51 
52         // The platform selection color.
53         virtual Color platformActiveSelectionBackgroundColor() const;
54         virtual Color platformInactiveSelectionBackgroundColor() const;
55         virtual Color platformActiveSelectionForegroundColor() const;
56         virtual Color platformInactiveSelectionForegroundColor() const;
57         virtual Color platformFocusRingColor() const;
58 
59         // To change the blink interval, override caretBlinkIntervalInternal instead of this one so that we may share layout test code an intercepts.
60         virtual double caretBlinkInterval() const;
61 
62         // System fonts.
63         virtual void systemFont(int propId, FontDescription&) const;
64 
65         virtual int minimumMenuListSize(RenderStyle*) const;
66 
67         virtual bool paintCheckbox(RenderObject*, const RenderObject::PaintInfo&, const IntRect&);
68         virtual void setCheckboxSize(RenderStyle*) const;
69 
70         virtual bool paintRadio(RenderObject*, const RenderObject::PaintInfo&, const IntRect&);
71         virtual void setRadioSize(RenderStyle*) const;
72 
73         virtual bool paintButton(RenderObject*, const RenderObject::PaintInfo&, const IntRect&);
74         virtual void adjustButtonStyle(CSSStyleSelector*, RenderStyle*, Element*) const;
75 
76         virtual bool paintTextField(RenderObject*, const RenderObject::PaintInfo&, const IntRect&);
77 
78         virtual bool paintTextArea(RenderObject*, const RenderObject::PaintInfo&, const IntRect&);
79 
80         virtual void adjustSearchFieldStyle(CSSStyleSelector*, RenderStyle*, Element*) const;
81         virtual bool paintSearchField(RenderObject*, const RenderObject::PaintInfo&, const IntRect&);
82 
83         virtual void adjustSearchFieldCancelButtonStyle(CSSStyleSelector*, RenderStyle*, Element*) const;
84         virtual bool paintSearchFieldCancelButton(RenderObject*, const RenderObject::PaintInfo&, const IntRect&);
85 
86         virtual void adjustSearchFieldDecorationStyle(CSSStyleSelector*, RenderStyle*, Element*) const;
87 
88         virtual void adjustSearchFieldResultsDecorationStyle(CSSStyleSelector*, RenderStyle*, Element*) const;
89         virtual bool paintSearchFieldResultsDecoration(RenderObject*, const RenderObject::PaintInfo&, const IntRect&);
90 
91         virtual void adjustSearchFieldResultsButtonStyle(CSSStyleSelector*, RenderStyle*, Element*) const;
92         virtual bool paintSearchFieldResultsButton(RenderObject*, const RenderObject::PaintInfo&, const IntRect&);
93 
94         virtual bool paintMediaControlsBackground(RenderObject*, const RenderObject::PaintInfo&, const IntRect&);
95         virtual bool paintMediaSliderTrack(RenderObject*, const RenderObject::PaintInfo&, const IntRect&);
96         virtual bool paintMediaVolumeSliderTrack(RenderObject*, const RenderObject::PaintInfo&, const IntRect&);
97         virtual void adjustSliderThumbSize(RenderObject*) const;
98         virtual bool paintMediaSliderThumb(RenderObject*, const RenderObject::PaintInfo&, const IntRect&);
99         virtual bool paintMediaVolumeSliderThumb(RenderObject*, const RenderObject::PaintInfo&, const IntRect&);
100         virtual bool paintMediaPlayButton(RenderObject*, const RenderObject::PaintInfo&, const IntRect&);
101         virtual bool paintMediaMuteButton(RenderObject*, const RenderObject::PaintInfo&, const IntRect&);
102 
103         // MenuList refers to an unstyled menulist (meaning a menulist without
104         // background-color or border set) and MenuListButton refers to a styled
105         // menulist (a menulist with background-color or border set). They have
106         // this distinction to support showing aqua style themes whenever they
107         // possibly can, which is something we don't want to replicate.
108         //
109         // In short, we either go down the MenuList code path or the MenuListButton
110         // codepath. We never go down both. And in both cases, they render the
111         // entire menulist.
112         virtual void adjustMenuListStyle(CSSStyleSelector*, RenderStyle*, Element*) const;
113         virtual bool paintMenuList(RenderObject*, const RenderObject::PaintInfo&, const IntRect&);
114         virtual void adjustMenuListButtonStyle(CSSStyleSelector*, RenderStyle*, Element*) const;
115         virtual bool paintMenuListButton(RenderObject*, const RenderObject::PaintInfo&, const IntRect&);
116 
117         virtual bool paintSliderTrack(RenderObject*, const RenderObject::PaintInfo&, const IntRect&);
118         virtual bool paintSliderThumb(RenderObject*, const RenderObject::PaintInfo&, const IntRect&);
119 
120         // These methods define the padding for the MenuList's inner block.
121         virtual int popupInternalPaddingLeft(RenderStyle*) const;
122         virtual int popupInternalPaddingRight(RenderStyle*) const;
123         virtual int popupInternalPaddingTop(RenderStyle*) const;
124         virtual int popupInternalPaddingBottom(RenderStyle*) const;
125 
126         virtual int buttonInternalPaddingLeft() const;
127         virtual int buttonInternalPaddingRight() const;
128         virtual int buttonInternalPaddingTop() const;
129         virtual int buttonInternalPaddingBottom() const;
130 
131 #if ENABLE(VIDEO)
132         // Media controls
133         virtual bool shouldRenderMediaControlPart(ControlPart, Element*);
134 #endif
135 
136         // Provide a way to pass the default font size from the Settings object
137         // to the render theme.  FIXME: http://b/1129186 A cleaner way would be
138         // to remove the default font size from this object and have callers
139         // that need the value to get it directly from the appropriate Settings
140         // object.
141         static void setDefaultFontSize(int);
142 
143     protected:
144         static const String& defaultGUIFont();
145 
146         // The default variable-width font size.  We use this as the default font
147         // size for the "system font", and as a base size (which we then shrink) for
148         // form control fonts.
149         static float defaultFontSize;
150 
151         virtual double caretBlinkIntervalInternal() const;
152 
153     private:
154         int menuListInternalPadding(RenderStyle*, int paddingType) const;
155         bool paintMediaButtonInternal(GraphicsContext*, const IntRect&, Image*);
156     };
157 
158 } // namespace WebCore
159 
160 #endif // RenderThemeChromiumSkia_h
161