/*

 * This file is part of the theme implementation for form controls in WebCore.

 *

 * Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).

 *

 * 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 RenderThemeQt_H

#define RenderThemeQt_H

#include "RenderTheme.h"

#include <QStyle>

QT_BEGIN_NAMESPACE

class QPainter;

class QWidget;

QT_END_NAMESPACE

namespace WebCore {

class RenderStyle;

class HTMLMediaElement;

class ScrollbarThemeQt;

class RenderThemeQt : public RenderTheme {

private:

    RenderThemeQt(Page* page);

    virtual ~RenderThemeQt();

public:

    static PassRefPtr<RenderTheme> create(Page*);

    virtual bool supportsHover(const RenderStyle*) const;

    virtual bool supportsFocusRing(const RenderStyle* style) const;

    virtual int baselinePosition(const RenderObject* o) const;

    // A method asking if the control changes its tint when the window has focus or not.

    virtual bool controlSupportsTints(const RenderObject*) const;

    // A general method asking if any control tinting is supported at all.

    virtual bool supportsControlTints() const;

    virtual void adjustRepaintRect(const RenderObject* o, IntRect& r);

    // The platform selection color.

    virtual Color platformActiveSelectionBackgroundColor() const;

    virtual Color platformInactiveSelectionBackgroundColor() const;

    virtual Color platformActiveSelectionForegroundColor() const;

    virtual Color platformInactiveSelectionForegroundColor() const;

    virtual void systemFont(int propId, FontDescription&) const;

    virtual int minimumMenuListSize(RenderStyle*) const;

    virtual void adjustSliderThumbSize(RenderObject*) const;

    virtual double caretBlinkInterval() const;

#if ENABLE(VIDEO)

    virtual String extraMediaControlsStyleSheet();

#endif

    QStyle* qStyle() const;

protected:

    virtual bool paintCheckbox(RenderObject* o, const RenderObject::PaintInfo& i, const IntRect& r);

    virtual void setCheckboxSize(RenderStyle*) const;

    virtual bool paintRadio(RenderObject* o, const RenderObject::PaintInfo& i, const IntRect& r);

    virtual void setRadioSize(RenderStyle*) const;

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

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

    virtual void setButtonSize(RenderStyle*) const;

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

    virtual void adjustTextFieldStyle(CSSStyleSelector*, RenderStyle*, Element*) const;

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

    virtual void adjustTextAreaStyle(CSSStyleSelector*, RenderStyle*, Element*) const;

    virtual bool paintMenuList(RenderObject* o, const RenderObject::PaintInfo& i, const IntRect& r);

    virtual void adjustMenuListStyle(CSSStyleSelector*, RenderStyle*, Element*) const;

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

    virtual void adjustMenuListButtonStyle(CSSStyleSelector*, RenderStyle*, Element*) const;

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

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

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

    virtual void adjustSearchFieldStyle(CSSStyleSelector*, RenderStyle*, Element*) const;

    virtual void adjustSearchFieldCancelButtonStyle(CSSStyleSelector*, RenderStyle*, Element*) const;

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

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

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

    virtual void adjustSearchFieldResultsDecorationStyle(CSSStyleSelector*, RenderStyle*, Element*) const;

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

#if ENABLE(VIDEO)

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

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

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

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

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

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

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

private:

    HTMLMediaElement* getMediaElementFromRenderObject(RenderObject* o) const;

    void paintMediaBackground(QPainter* painter, const IntRect& r) const;

    QColor getMediaControlForegroundColor(RenderObject* o = 0) const;

#endif

    void computeSizeBasedOnStyle(RenderStyle* renderStyle) const;

private:

    bool supportsFocus(ControlPart) const;

    ControlPart applyTheme(QStyleOption&, RenderObject*) const;

    void setButtonPadding(RenderStyle*) const;

    void setPopupPadding(RenderStyle*) const;

    QStyle* fallbackStyle() const;

    Page* m_page;

#ifdef Q_WS_MAC

    int m_buttonFontPixelSize;

#endif

    QString m_buttonFontFamily;

    QStyle* m_fallbackStyle;

};

class StylePainter {

public:

    explicit StylePainter(RenderThemeQt*, const RenderObject::PaintInfo&);

    explicit StylePainter(ScrollbarThemeQt*, GraphicsContext*);

    ~StylePainter();

    bool isValid() const { return painter && style; }

    QPainter* painter;

    QWidget* widget;

    QStyle* style;

    void drawPrimitive(QStyle::PrimitiveElement pe, const QStyleOption& opt)

    { style->drawPrimitive(pe, &opt, painter, widget); }

    void drawControl(QStyle::ControlElement ce, const QStyleOption& opt)

    { style->drawControl(ce, &opt, painter, widget); }

    void drawComplexControl(QStyle::ComplexControl cc, const QStyleOptionComplex& opt)

    { style->drawComplexControl(cc, &opt, painter, widget); }

private:

    void init(GraphicsContext* context, QStyle*);

    QBrush oldBrush;

    bool oldAntialiasing;

    Q_DISABLE_COPY(StylePainter)

};

}

#endif