Split ThemePainter out of LayoutTheme

Source/core/layout/LayoutTheme.h

 /*
  * This file is part of the theme implementation for form controls in WebCore.
  *
  * Copyright (C) 2005, 2006, 2007, 2008, 2009, 2010, 2012 Apple Computer, Inc.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
  * version 2 of the License, or (at your option) any later version.
  *
  * This library is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  * Library General Public License for more details.
  *
  * You should have received a copy of the GNU Library General Public License
  * along with this library; see the file COPYING.LIB.  If not, write to
  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  * Boston, MA 02110-1301, USA.
  *
  */
 
 #ifndef LayoutTheme_h
 #define LayoutTheme_h
 
 #include "core/CoreExport.h"
 #include "core/layout/LayoutObject.h"
-#if USE(NEW_THEME)
-#include "platform/Theme.h"
-#else
 #include "platform/ThemeTypes.h"
-#endif
 #include "platform/scroll/ScrollTypes.h"
 #include "wtf/PassRefPtr.h"
 #include "wtf/RefCounted.h"
 #include "wtf/text/WTFString.h"
 
 namespace blink {
 
 class AuthorStyleInfo;
+class ComputedStyle;
 class Element;
 class FileList;
 class HTMLInputElement;
 class LayoutMeter;
-class LayoutProgress;
-
+class Theme;
+class ThemePainter;
 
 class CORE_EXPORT LayoutTheme : public RefCounted<LayoutTheme> {
 protected:
     LayoutTheme();
 
 public:
     virtual ~LayoutTheme() { }
 
     // This function is to be implemented in your platform-specific theme implementation to hand back the
     // appropriate platform theme.
     static LayoutTheme& theme();
 
+    virtual ThemePainter& painter() = 0;
+    static ThemePainter& themePainter() { return theme().painter(); }

[chrishtr, 2015/04/30 20:16:16]

I'd say get rid of themePainter(), it doesn't seem to help much.

[Xianzhu, 2015/04/30 21:08:42]

Done.

+
     static void setSizeIfAuto(ComputedStyle&, const IntSize&);
 
     // This method is called whenever style has been computed for an element and the appearance
     // property has been set to a value other than "none".  The theme should map in all of the appropriate
     // metrics and defaults given the contents of the style.  This includes sophisticated operations like
     // selection of control size based off the font, the disabling of appearance when certain other properties like
     // "border" are set, or if the appearance is not supported by the theme.
     void adjustStyle(ComputedStyle&, Element*, const AuthorStyleInfo&);
 
-    // This method is called to paint the widget as a background of the LayoutObject.  A widget's foreground, e.g., the
-    // text of a button, is always laid out by the engine itself.  The boolean return value indicates
-    // whether the CSS border/background should also be painted.
-    bool paint(LayoutObject*, const PaintInfo&, const IntRect&);
-    bool paintBorderOnly(LayoutObject*, const PaintInfo&, const IntRect&);
-    bool paintDecorations(LayoutObject*, const PaintInfo&, const IntRect&);
-
     // The remaining methods should be implemented by the platform-specific portion of the theme, e.g.,
     // LayoutThemeMac.cpp for Mac OS X.
 
     // These methods return the theme's extra style sheets rules, to let each platform
     // adjust the default CSS rules in html.css, quirks.css or mediaControls.css.
     virtual String extraDefaultStyleSheet();
     virtual String extraQuirksStyleSheet() { return String(); }
     virtual String extraMediaControlsStyleSheet() { return String(); }
     virtual String extraFullScreenStyleSheet() { return String(); }
 
@@ skipping 63 matching lines @@
     virtual void adjustSliderThumbSize(ComputedStyle&, Element*) const;
 
     virtual int popupInternalPaddingLeft(const ComputedStyle&) const { return 0; }
     virtual int popupInternalPaddingRight(const ComputedStyle&) const { return 0; }
     virtual int popupInternalPaddingTop(const ComputedStyle&) const { return 0; }
     virtual int popupInternalPaddingBottom(const ComputedStyle&) const { return 0; }
     virtual bool popupOptionSupportsTextIndent() const { return false; }
 
     virtual ScrollbarControlSize scrollbarControlSizeForPart(ControlPart) { return RegularScrollbar; }
 
-    // Method for painting the caps lock indicator
-    virtual bool paintCapsLockIndicator(LayoutObject*, const PaintInfo&, const IntRect&) { return 0; };
-
     // Returns the repeat interval of the animation for the progress bar.
     virtual double animationRepeatIntervalForProgressBar() const;
     // Returns the duration of the animation for the progress bar.
     virtual double animationDurationForProgressBar() const;
 
     // Media controls
-    virtual String formatMediaControlsTime(float time) const;
-    virtual String formatMediaControlsCurrentTime(float currentTime, float duration) const;
+    String formatMediaControlsTime(float time) const;
+    String formatMediaControlsCurrentTime(float currentTime, float duration) const;
 
     virtual IntSize meterSizeForBounds(const LayoutMeter*, const IntRect&) const;
     virtual bool supportsMeter(ControlPart) const;
 
     // Returns size of one slider tick mark for a horizontal track.
     // For vertical tracks we rotate it and use it. i.e. Width is always length along the track.
     virtual IntSize sliderTickSize() const = 0;
     // Returns the distance of slider tick origin from the slider track center.
     virtual int sliderTickOffsetFromTrackCenter() const = 0;
-    void paintSliderTicks(LayoutObject*, const PaintInfo&, const IntRect&);
 
     virtual bool shouldShowPlaceholderWhenFocused() const { return false; }
     virtual bool shouldHaveSpinButton(HTMLInputElement*) const;
 
     // Functions for <select> elements.
     virtual bool delegatesMenuListRendering() const { return false; }
     virtual bool popsMenuByArrowKeys() const { return false; }
     virtual bool popsMenuBySpaceKey() const { return false; }
     virtual bool popsMenuByReturnKey() const { return false; }
     virtual bool popsMenuByAltDownUpOrF4Key() const { return false; }
 
     virtual String fileListNameForWidth(Locale&, const FileList*, const Font&, int width) const;
 
     virtual bool shouldOpenPickerWithF4Key() const;
 
     virtual bool supportsSelectionForegroundColors() const { return true; }
 
     virtual bool isModalColorChooser() const { return true; }
 
+    virtual bool shouldUseFallbackTheme(const ComputedStyle&) const;
+
 protected:
     // The platform selection color.
     virtual Color platformActiveSelectionBackgroundColor() const;
     virtual Color platformInactiveSelectionBackgroundColor() const;
     virtual Color platformActiveSelectionForegroundColor() const;
     virtual Color platformInactiveSelectionForegroundColor() const;
 
     virtual Color platformActiveListBoxSelectionBackgroundColor() const;
     virtual Color platformInactiveListBoxSelectionBackgroundColor() const;
     virtual Color platformActiveListBoxSelectionForegroundColor() const;
     virtual Color platformInactiveListBoxSelectionForegroundColor() const;
 
     // A method asking if the theme is able to draw the focus ring.
     virtual bool supportsFocusRing(const ComputedStyle&) const;
 
 #if !USE(NEW_THEME)
     // Methods for each appearance value.
     virtual void adjustCheckboxStyle(ComputedStyle&, Element*) const;
-    virtual bool paintCheckbox(LayoutObject*, const PaintInfo&, const IntRect&) { return true; }
     virtual void setCheckboxSize(ComputedStyle&) const { }
 
     virtual void adjustRadioStyle(ComputedStyle&, Element*) const;
-    virtual bool paintRadio(LayoutObject*, const PaintInfo&, const IntRect&) { return true; }
     virtual void setRadioSize(ComputedStyle&) const { }
 
     virtual void adjustButtonStyle(ComputedStyle&, Element*) const;
-    virtual bool paintButton(LayoutObject*, const PaintInfo&, const IntRect&) { return true; }
-
     virtual void adjustInnerSpinButtonStyle(ComputedStyle&, Element*) const;
-    virtual bool paintInnerSpinButton(LayoutObject*, const PaintInfo&, const IntRect&) { return true; }
 #endif
 
-    virtual bool paintTextField(LayoutObject*, const PaintInfo&, const IntRect&) { return true; }
-
-    virtual bool paintTextArea(LayoutObject*, const PaintInfo&, const IntRect&) { return true; }
-
     virtual void adjustMenuListStyle(ComputedStyle&, Element*) const;
-    virtual bool paintMenuList(LayoutObject*, const PaintInfo&, const IntRect&) { return true; }
-
     virtual void adjustMenuListButtonStyle(ComputedStyle&, Element*) const;
-    virtual bool paintMenuListButton(LayoutObject*, const PaintInfo&, const IntRect&) { return true; }
-
-    virtual bool paintMeter(LayoutObject*, const PaintInfo&, const IntRect&);
-
-    virtual bool paintProgressBar(LayoutObject*, const PaintInfo&, const IntRect&) { return true; }
-
-    virtual bool paintSliderTrack(LayoutObject*, const PaintInfo&, const IntRect&) { return true; }
-
     virtual void adjustSliderThumbStyle(ComputedStyle&, Element*) const;
-    virtual bool paintSliderThumb(LayoutObject*, const PaintInfo&, const IntRect&) { return true; }
-
     virtual void adjustSearchFieldStyle(ComputedStyle&, Element*) const;
-    virtual bool paintSearchField(LayoutObject*, const PaintInfo&, const IntRect&) { return true; }
-
     virtual void adjustSearchFieldCancelButtonStyle(ComputedStyle&, Element*) const;
-    virtual bool paintSearchFieldCancelButton(LayoutObject*, const PaintInfo&, const IntRect&) { return true; }
-
     virtual void adjustSearchFieldDecorationStyle(ComputedStyle&, Element*) const;
-    virtual bool paintSearchFieldDecoration(LayoutObject*, const PaintInfo&, const IntRect&) { return true; }
-
     virtual void adjustSearchFieldResultsDecorationStyle(ComputedStyle&, Element*) const;
-    virtual bool paintSearchFieldResultsDecoration(LayoutObject*, const PaintInfo&, const IntRect&) { return true; }
-
-    virtual bool paintMediaFullscreenButton(LayoutObject*, const PaintInfo&, const IntRect&) { return true; }
-    virtual bool paintMediaPlayButton(LayoutObject*, const PaintInfo&, const IntRect&) { return true; }
-    virtual bool paintMediaOverlayPlayButton(LayoutObject*, const PaintInfo&, const IntRect&) { return true; }
-    virtual bool paintMediaMuteButton(LayoutObject*, const PaintInfo&, const IntRect&) { return true; }
-    virtual bool paintMediaSliderTrack(LayoutObject*, const PaintInfo&, const IntRect&) { return true; }
-    virtual bool paintMediaSliderThumb(LayoutObject*, const PaintInfo&, const IntRect&) { return true; }
-    virtual bool paintMediaVolumeSliderContainer(LayoutObject*, const PaintInfo&, const IntRect&) { return true; }
-    virtual bool paintMediaVolumeSliderTrack(LayoutObject*, const PaintInfo&, const IntRect&) { return true; }
-    virtual bool paintMediaVolumeSliderThumb(LayoutObject*, const PaintInfo&, const IntRect&) { return true; }
-    virtual bool paintMediaToggleClosedCaptionsButton(LayoutObject*, const PaintInfo&, const IntRect&) { return true; }
-    virtual bool paintMediaCastButton(LayoutObject*, const PaintInfo&, const IntRect&) { return true; };
-    virtual bool paintMediaControlsBackground(LayoutObject*, const PaintInfo&, const IntRect&) { return true; }
-    virtual bool paintMediaCurrentTime(LayoutObject*, const PaintInfo&, const IntRect&) { return true; }
-    virtual bool paintMediaTimeRemaining(LayoutObject*, const PaintInfo&, const IntRect&) { return true; }
-    virtual bool paintMediaFullScreenVolumeSliderTrack(LayoutObject*, const PaintInfo&, const IntRect&) { return true; }
-    virtual bool paintMediaFullScreenVolumeSliderThumb(LayoutObject*, const PaintInfo&, const IntRect&) { return true; }
-
-    virtual bool shouldUseFallbackTheme(const ComputedStyle&) const;
     void adjustStyleUsingFallbackTheme(ComputedStyle&, Element*);
-    bool paintUsingFallbackTheme(LayoutObject*, const PaintInfo&, const IntRect&);
     void adjustCheckboxStyleUsingFallbackTheme(ComputedStyle&, Element*) const;
-    bool paintCheckboxUsingFallbackTheme(LayoutObject*, const PaintInfo&, const IntRect&);
     void adjustRadioStyleUsingFallbackTheme(ComputedStyle&, Element*) const;
-    bool paintRadioUsingFallbackTheme(LayoutObject*, const PaintInfo&, const IntRect&);
 
 public:
     // Methods for state querying
-    ControlStates controlStatesForLayoutObject(const LayoutObject*) const;
-    bool isActive(const LayoutObject*) const;
-    bool isChecked(const LayoutObject*) const;
-    bool isIndeterminate(const LayoutObject*) const;
-    bool isEnabled(const LayoutObject*) const;
-    bool isFocused(const LayoutObject*) const;
-    bool isPressed(const LayoutObject*) const;
-    bool isSpinUpButtonPartPressed(const LayoutObject*) const;
-    bool isHovered(const LayoutObject*) const;
-    bool isSpinUpButtonPartHovered(const LayoutObject*) const;
-    bool isReadOnlyControl(const LayoutObject*) const;
+    static ControlStates controlStatesForLayoutObject(const LayoutObject*);
+    static bool isActive(const LayoutObject*);
+    static bool isChecked(const LayoutObject*);
+    static bool isIndeterminate(const LayoutObject*);
+    static bool isEnabled(const LayoutObject*);
+    static bool isFocused(const LayoutObject*);
+    static bool isPressed(const LayoutObject*);
+    static bool isSpinUpButtonPartPressed(const LayoutObject*);
+    static bool isHovered(const LayoutObject*);
+    static bool isSpinUpButtonPartHovered(const LayoutObject*);
+    static bool isReadOnlyControl(const LayoutObject*);
 
 private:
     Color m_customFocusRingColor;
     bool m_hasCustomFocusRingColor;
 
     // This color is expected to be drawn on a semi-transparent overlay,
     // making it more transparent than its alpha value indicates.
     static const RGBA32 defaultTapHighlightColor = 0x66000000;
 
     static const RGBA32 defaultCompositionBackgroundColor = 0xFFFFDD55;
 
 #if USE(NEW_THEME)
     Theme* m_platformTheme; // The platform-specific theme.
 #endif
 };
 
 } // namespace blink
 
 #endif // LayoutTheme_h