RenderThemeChromiumSkia.h

/*
 * This file is part of the WebKit project.
 *
 * Copyright (C) 2006 Apple Computer, Inc.
 * Copyright (C) 2006 Michael Emmel mike.emmel@gmail.com
 * Copyright (C) 2007 Holger Hans Peter Freyther
 * Copyright (C) 2007 Alp Toker <alp@atoker.com>
 * Copyright (C) 2008, 2009 Google, Inc.
 * All rights reserved.
 *
 * 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 RenderThemeChromiumSkia_h
#define RenderThemeChromiumSkia_h

#include "RenderTheme.h"
#include "RenderThemeChromiumCommon.h"

namespace WebCore {

class RenderProgress;

class RenderThemeChromiumSkia : public RenderTheme {
    public:
        RenderThemeChromiumSkia();
        virtual ~RenderThemeChromiumSkia();

        virtual String extraDefaultStyleSheet();
        virtual String extraQuirksStyleSheet();
#if ENABLE(VIDEO)
        virtual String extraMediaControlsStyleSheet();
#endif

        // A method asking if the theme's controls actually care about redrawing when hovered.
        virtual bool supportsHover(const RenderStyle*) const;

        // A method asking if the theme is able to draw the focus ring.
        virtual bool supportsFocusRing(const RenderStyle*) const;

        virtual bool supportsDataListUI(const AtomicString& type) const OVERRIDE;

#if ENABLE(VIDEO_TRACK)
        virtual bool supportsClosedCaptioning() const OVERRIDE;
#endif
        // The platform selection color.
        virtual Color platformActiveSelectionBackgroundColor() const;
        virtual Color platformInactiveSelectionBackgroundColor() const;
        virtual Color platformActiveSelectionForegroundColor() const;
        virtual Color platformInactiveSelectionForegroundColor() const;
        virtual Color platformFocusRingColor() const;

        // To change the blink interval, override caretBlinkIntervalInternal instead of this one so that we may share layout test code an intercepts.
        virtual double caretBlinkInterval() const;

        // System fonts.
        virtual void systemFont(int propId, FontDescription&) const;

        virtual int minimumMenuListSize(RenderStyle*) const;

        virtual void setCheckboxSize(RenderStyle*) const;

        virtual void setRadioSize(RenderStyle*) const;

        virtual void adjustButtonStyle(StyleResolver*, RenderStyle*, Element*) const;

        virtual bool paintTextArea(RenderObject*, const PaintInfo&, const IntRect&);

        virtual void adjustSearchFieldStyle(StyleResolver*, RenderStyle*, Element*) const;
        virtual bool paintSearchField(RenderObject*, const PaintInfo&, const IntRect&);

        virtual void adjustSearchFieldCancelButtonStyle(StyleResolver*, RenderStyle*, Element*) const;
        virtual bool paintSearchFieldCancelButton(RenderObject*, const PaintInfo&, const IntRect&);

        virtual void adjustSearchFieldDecorationStyle(StyleResolver*, RenderStyle*, Element*) const;

        virtual void adjustSearchFieldResultsDecorationStyle(StyleResolver*, RenderStyle*, Element*) const;
        virtual bool paintSearchFieldResultsDecoration(RenderObject*, const PaintInfo&, const IntRect&);

        virtual void adjustSearchFieldResultsButtonStyle(StyleResolver*, RenderStyle*, Element*) const;
        virtual bool paintSearchFieldResultsButton(RenderObject*, const PaintInfo&, const IntRect&);

        virtual bool paintMediaSliderTrack(RenderObject*, const PaintInfo&, const IntRect&);
        virtual bool paintMediaVolumeSliderTrack(RenderObject*, const PaintInfo&, const IntRect&);
        virtual void adjustSliderThumbSize(RenderStyle*, Element*) const;
        virtual bool paintMediaSliderThumb(RenderObject*, const PaintInfo&, const IntRect&);
        virtual bool paintMediaToggleClosedCaptionsButton(RenderObject*, const PaintInfo&, const IntRect&);
        virtual bool paintMediaVolumeSliderThumb(RenderObject*, const PaintInfo&, const IntRect&);
        virtual bool paintMediaPlayButton(RenderObject*, const PaintInfo&, const IntRect&);
        virtual bool paintMediaMuteButton(RenderObject*, const PaintInfo&, const IntRect&);
        virtual String formatMediaControlsTime(float time) const;
        virtual String formatMediaControlsCurrentTime(float currentTime, float duration) const;
        virtual String formatMediaControlsRemainingTime(float currentTime, float duration) const;
        virtual bool paintMediaFullscreenButton(RenderObject*, const PaintInfo&, const IntRect&);

        // MenuList refers to an unstyled menulist (meaning a menulist without
        // background-color or border set) and MenuListButton refers to a styled
        // menulist (a menulist with background-color or border set). They have
        // this distinction to support showing aqua style themes whenever they
        // possibly can, which is something we don't want to replicate.
        //
        // In short, we either go down the MenuList code path or the MenuListButton
        // codepath. We never go down both. And in both cases, they render the
        // entire menulist.
        virtual void adjustMenuListStyle(StyleResolver*, RenderStyle*, Element*) const;
        virtual void adjustMenuListButtonStyle(StyleResolver*, RenderStyle*, Element*) const;
        virtual bool paintMenuListButton(RenderObject*, const PaintInfo&, const IntRect&);

#if ENABLE(PROGRESS_ELEMENT)
        virtual double animationRepeatIntervalForProgressBar(RenderProgress*) const;
        virtual double animationDurationForProgressBar(RenderProgress*) const;
#endif

        // These methods define the padding for the MenuList's inner block.
        virtual int popupInternalPaddingLeft(RenderStyle*) const;
        virtual int popupInternalPaddingRight(RenderStyle*) const;
        virtual int popupInternalPaddingTop(RenderStyle*) const;
        virtual int popupInternalPaddingBottom(RenderStyle*) const;

#if ENABLE(VIDEO)
        // Media controls
        virtual bool hasOwnDisabledStateHandlingFor(ControlPart) const { return true; }
        virtual bool usesVerticalVolumeSlider() const { return false; }
#endif

        // Provide a way to pass the default font size from the Settings object
        // to the render theme.  FIXME: http://b/1129186 A cleaner way would be
        // to remove the default font size from this object and have callers
        // that need the value to get it directly from the appropriate Settings
        // object.
        static void setDefaultFontSize(int);

    protected:
        static const String& defaultGUIFont();

        // The default variable-width font size.  We use this as the default font
        // size for the "system font", and as a base size (which we then shrink) for
        // form control fonts.
        static float defaultFontSize;

        virtual double caretBlinkIntervalInternal() const;

        virtual int menuListArrowPadding() const;

        static void setSizeIfAuto(RenderStyle*, const IntSize&);

#if ENABLE(PROGRESS_ELEMENT)
        IntRect determinateProgressValueRectFor(RenderProgress*, const IntRect&) const;
        IntRect indeterminateProgressValueRectFor(RenderProgress*, const IntRect&) const;
        IntRect progressValueRectFor(RenderProgress*, const IntRect&) const;

        class DirectionFlippingScope {
        public:
            DirectionFlippingScope(RenderObject*, const PaintInfo&, const IntRect&);
            ~DirectionFlippingScope();

        private:
            bool m_needsFlipping;
            const PaintInfo& m_paintInfo;
        };
#endif

private:
    virtual Color disabledTextColor(const Color& textColor, const Color&) const OVERRIDE { return textColor; }
    virtual bool shouldShowPlaceholderWhenFocused() const OVERRIDE;

#if ENABLE(DATALIST_ELEMENT)
    virtual LayoutUnit sliderTickSnappingThreshold() const OVERRIDE;
#endif
#if ENABLE(INPUT_MULTIPLE_FIELDS_UI) && ENABLE(CALENDAR_PICKER)
    virtual bool supportsCalendarPicker(const AtomicString& type) const OVERRIDE;
#endif

    int menuListInternalPadding(RenderStyle*, int paddingType) const;
    bool paintMediaButtonInternal(GraphicsContext*, const IntRect&, Image*);
    IntRect convertToPaintingRect(RenderObject* inputRenderer, const RenderObject* partRenderer, LayoutRect partRect, const IntRect& localOffset) const;
};

} // namespace WebCore

#endif // RenderThemeChromiumSkia_h