third_party/WebKit/Source/core/layout/LayoutThemeDefault.h

   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  * Copyright (C) 2009 Kenneth Rohde Christiansen
  11  *
  12  * This library is free software; you can redistribute it and/or
  13  * modify it under the terms of the GNU Library General Public
  14  * License as published by the Free Software Foundation; either
  15  * version 2 of the License, or (at your option) any later version.
  16  *
  17  * This library is distributed in the hope that it will be useful,
  18  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  19  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  20  * Library General Public License for more details.
  21  *
  22  * You should have received a copy of the GNU Library General Public License
  23  * along with this library; see the file COPYING.LIB.  If not, write to
  24  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  25  * Boston, MA 02110-1301, USA.
  26  *
  27  */
  28
  29 #ifndef LayoutThemeDefault_h
  30 #define LayoutThemeDefault_h
  31
  32 #include "core/CoreExport.h"
  33 #include "core/layout/LayoutTheme.h"
  34 #include "core/paint/ThemePainterDefault.h"
  35
  36 namespace blink {
  37
  38 class LayoutProgress;
  39
  40 class CORE_EXPORT LayoutThemeDefault : public LayoutTheme {
  41 public:
  42     String extraDefaultStyleSheet() override;
  43     String extraQuirksStyleSheet() override;
  44
  45     Color systemColor(CSSValueID) const override;
  46
  47     bool supportsFocusRing(const ComputedStyle&) const override;
  48
  49     // List Box selection color
  50     virtual Color activeListBoxSelectionBackgroundColor() const;
  51     virtual Color activeListBoxSelectionForegroundColor() const;
  52     virtual Color inactiveListBoxSelectionBackgroundColor() const;
  53     virtual Color inactiveListBoxSelectionForegroundColor() const;
  54
  55     Color platformActiveSelectionBackgroundColor() const override;
  56     Color platformInactiveSelectionBackgroundColor() const override;
  57     Color platformActiveSelectionForegroundColor() const override;
  58     Color platformInactiveSelectionForegroundColor() const override;
  59
  60     IntSize sliderTickSize() const override;
  61     int sliderTickOffsetFromTrackCenter() const override;
  62     void adjustSliderThumbSize(ComputedStyle&) const override;
  63
  64     static void setCaretBlinkInterval(double);
  65
  66     void setCheckboxSize(ComputedStyle&) const override;
  67     void setRadioSize(ComputedStyle&) const override;
  68     void adjustInnerSpinButtonStyle(ComputedStyle&) const override;
  69
  70     bool popsMenuBySpaceKey() const final { return true; }
  71     bool popsMenuByReturnKey() const final { return true; }
  72     bool popsMenuByAltDownUpOrF4Key() const override { return true; }
  73
  74     bool shouldOpenPickerWithF4Key() const override;
  75
  76     Color platformTapHighlightColor() const override
  77     {
  78         return Color(defaultTapHighlightColor);
  79     }
  80
  81     // A method asking if the theme's controls actually care about redrawing
  82     // when hovered.
  83     bool supportsHover(const ComputedStyle&) const final;
  84
  85     Color platformFocusRingColor() const override;
  86
  87     double caretBlinkInterval() const final;
  88
  89     // System fonts.
  90     virtual void systemFont(CSSValueID systemFontID, FontStyle&, FontWeight&, float& fontSize, AtomicString& fontFamily) const;
  91
  92     int minimumMenuListSize(const ComputedStyle&) const override;
  93
  94     void adjustButtonStyle(ComputedStyle&) const override;
  95     void adjustSearchFieldStyle(ComputedStyle&) const override;
  96     void adjustSearchFieldCancelButtonStyle(ComputedStyle&) const override;
  97     void adjustSearchFieldDecorationStyle(ComputedStyle&) const override;
  98     void adjustSearchFieldResultsDecorationStyle(ComputedStyle&) const override;
  99
 100     // MenuList refers to an unstyled menulist (meaning a menulist without
 101     // background-color or border set) and MenuListButton refers to a styled
 102     // menulist (a menulist with background-color or border set). They have
 103     // this distinction to support showing aqua style themes whenever they
 104     // possibly can, which is something we don't want to replicate.
 105     //
 106     // In short, we either go down the MenuList code path or the MenuListButton
 107     // codepath. We never go down both. And in both cases, they layout the
 108     // entire menulist.
 109     void adjustMenuListStyle(ComputedStyle&, Element*) const override;
 110     void adjustMenuListButtonStyle(ComputedStyle&, Element*) const override;
 111
 112     double animationRepeatIntervalForProgressBar() const override;
 113     double animationDurationForProgressBar() const override;
 114
 115     // These methods define the padding for the MenuList's inner block.
 116     int popupInternalPaddingLeft(const ComputedStyle&) const override;
 117     int popupInternalPaddingRight(const ComputedStyle&) const override;
 118     int popupInternalPaddingTop(const ComputedStyle&) const override;
 119     int popupInternalPaddingBottom(const ComputedStyle&) const override;
 120
 121     // Provide a way to pass the default font size from the Settings object
 122     // to the layout theme. FIXME: http://b/1129186 A cleaner way would be
 123     // to remove the default font size from this object and have callers
 124     // that need the value to get it directly from the appropriate Settings
 125     // object.
 126     static void setDefaultFontSize(int);
 127
 128     static void setSelectionColors(unsigned activeBackgroundColor, unsigned activeForegroundColor, unsigned inactiveBackgroundColor, unsigned inactiveForegroundColor);
 129
 130 protected:
 131     LayoutThemeDefault();
 132     ~LayoutThemeDefault() override;
 133     bool shouldUseFallbackTheme(const ComputedStyle&) const override;
 134     virtual int menuListArrowPadding() const;
 135
 136     IntRect determinateProgressValueRectFor(LayoutProgress*, const IntRect&) const;
 137     IntRect indeterminateProgressValueRectFor(LayoutProgress*, const IntRect&) const;
 138
 139 private:
 140     ThemePainter& painter() override { return m_painter; }
 141
 142     int menuListInternalPadding(const ComputedStyle&, int paddingType) const;
 143
 144     static const RGBA32 defaultTapHighlightColor = 0x2e000000; // 18% black.
 145     static double m_caretBlinkInterval;
 146
 147     static unsigned m_activeSelectionBackgroundColor;
 148     static unsigned m_activeSelectionForegroundColor;
 149     static unsigned m_inactiveSelectionBackgroundColor;
 150     static unsigned m_inactiveSelectionForegroundColor;
 151
 152     ThemePainterDefault m_painter;
 153 };
 154
 155 } // namespace blink
 156
 157 #endif // LayoutThemeDefault_h