/*
 * 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 INdT - Instituto Nokia de Tecnologia
 * Copyright (C) 2009-2010 ProFUSION embedded systems
 * Copyright (C) 2009-2010 Samsung Electronics
 * 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 RenderThemeEfl_h
#define RenderThemeEfl_h

#if ENABLE(VIDEO)
#include "MediaControlElements.h"
#endif
#include "RenderTheme.h"

#include <cairo.h>

typedef struct _Ecore_Evas Ecore_Evas;
typedef struct _Evas_Object Evas_Object;

namespace WebCore {

enum FormType { // KEEP IN SYNC WITH edjeGroupFromFormType()
    Button,
    RadioButton,
    TextField,
    CheckBox,
    ComboBox,
#if ENABLE(PROGRESS_ELEMENT)
    ProgressBar,
#endif
    SearchField,
    SearchFieldDecoration,
    SearchFieldResultsButton,
    SearchFieldResultsDecoration,
    SearchFieldCancelButton,
    SliderVertical,
    SliderHorizontal,
#if ENABLE(VIDEO)
    PlayPauseButton,
    MuteUnMuteButton,
    SeekForwardButton,
    SeekBackwardButton,
    FullScreenButton,
#endif
    Spinner,
    FormTypeLast
};

class RenderThemeEfl : public RenderTheme {
private:
    RenderThemeEfl(Page*);
    ~RenderThemeEfl();

public:
    static PassRefPtr<RenderTheme> create(Page*);

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

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

    // A method to obtain the baseline position for a "leaf" control. This will only be used if a baseline
    // position cannot be determined by examining child content. Checkboxes and radio buttons are examples of
    // controls that need to do this.
    virtual LayoutUnit baselinePosition(const RenderObject*) const;

    virtual Color platformActiveSelectionBackgroundColor() const { return m_activeSelectionBackgroundColor; }
    virtual Color platformInactiveSelectionBackgroundColor() const { return m_inactiveSelectionBackgroundColor; }
    virtual Color platformActiveSelectionForegroundColor() const { return m_activeSelectionForegroundColor; }
    virtual Color platformInactiveSelectionForegroundColor() const { return m_inactiveSelectionForegroundColor; }
    virtual Color platformFocusRingColor() const { return m_focusRingColor; }

    virtual void themeChanged();

    // Set platform colors and notify they changed
    void setActiveSelectionColor(int foreR, int foreG, int foreB, int foreA, int backR, int backG, int backB, int backA);
    void setInactiveSelectionColor(int foreR, int foreG, int foreB, int foreA, int backR, int backG, int backB, int backA);
    void setFocusRingColor(int r, int g, int b, int a);

    void setButtonTextColor(int foreR, int foreG, int foreB, int foreA, int backR, int backG, int backB, int backA);
    void setComboTextColor(int foreR, int foreG, int foreB, int foreA, int backR, int backG, int backB, int backA);
    void setEntryTextColor(int foreR, int foreG, int foreB, int foreA, int backR, int backG, int backB, int backA);
    void setSearchTextColor(int foreR, int foreG, int foreB, int foreA, int backR, int backG, int backB, int backA);

    void adjustSizeConstraints(RenderStyle*, FormType) const;


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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

    virtual void adjustSliderThumbSize(RenderStyle*, Element*) const;

#if ENABLE(DATALIST_ELEMENT)
    virtual IntSize sliderTickSize() const OVERRIDE;
    virtual int sliderTickOffsetFromTrackCenter() const OVERRIDE;
#endif

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

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

    static void setDefaultFontSize(int fontsize);

#if ENABLE(PROGRESS_ELEMENT)
    virtual void adjustProgressBarStyle(StyleResolver*, RenderStyle*, Element*) const;
    virtual bool paintProgressBar(RenderObject*, const PaintInfo&, const IntRect&);
    virtual double animationRepeatIntervalForProgressBar(RenderProgress*) const;
    virtual double animationDurationForProgressBar(RenderProgress*) const;
#endif

#if ENABLE(VIDEO)
    virtual String extraMediaControlsStyleSheet();
#if ENABLE(FULLSCREEN_API)
    virtual String extraFullScreenStyleSheet();
#endif
    virtual String formatMediaControlsCurrentTime(float currentTime, float duration) const;
    virtual bool hasOwnDisabledStateHandlingFor(ControlPart) const { return true; }

    virtual bool paintMediaFullscreenButton(RenderObject*, const PaintInfo&, const IntRect&);
    virtual bool paintMediaPlayButton(RenderObject*, const PaintInfo&, const IntRect&);
    virtual bool paintMediaMuteButton(RenderObject*, const PaintInfo&, const IntRect&);
    virtual bool paintMediaSeekBackButton(RenderObject*, const PaintInfo&, const IntRect&);
    virtual bool paintMediaSeekForwardButton(RenderObject*, const PaintInfo&, const IntRect&);
    virtual bool paintMediaSliderTrack(RenderObject*, const PaintInfo&, const IntRect&);
    virtual bool paintMediaSliderThumb(RenderObject*, const PaintInfo&, const IntRect&);
    virtual bool paintMediaVolumeSliderContainer(RenderObject*, const PaintInfo&, const IntRect&);
    virtual bool paintMediaVolumeSliderTrack(RenderObject*, const PaintInfo&, const IntRect&);
    virtual bool paintMediaVolumeSliderThumb(RenderObject*, const PaintInfo&, const IntRect&);
    virtual bool paintMediaCurrentTime(RenderObject*, const PaintInfo&, const IntRect&);
#endif

    void setThemePath(const String&);
    String themePath() { return m_themePath; }
protected:
    static float defaultFontSize;

private:
    void createCanvas();
    void createEdje();
    void applyEdjeColors();
    void applyPartDescriptions();
    const char* edjeGroupFromFormType(FormType) const;
    void applyEdjeStateFromForm(Evas_Object*, ControlStates);
    bool paintThemePart(RenderObject*, FormType, const PaintInfo&, const IntRect&);
    bool isFormElementTooLargeToDisplay(const IntSize&);

#if ENABLE(VIDEO)
    bool emitMediaButtonSignal(FormType, MediaControlElementType, const IntRect&);
#endif

    Page* m_page;
    Color m_activeSelectionBackgroundColor;
    Color m_activeSelectionForegroundColor;
    Color m_inactiveSelectionBackgroundColor;
    Color m_inactiveSelectionForegroundColor;
    Color m_focusRingColor;
    Color m_sliderThumbColor;

#if ENABLE(VIDEO)
    Color m_mediaPanelColor;
    Color m_mediaSliderColor;
#endif

    String m_themePath;
    Ecore_Evas* m_canvas;
    Evas_Object* m_edje;

    struct ThemePartDesc {
        FormType type;
        LengthSize min;
        LengthSize max;
        LengthBox padding;
    };
    void applyPartDescriptionFallback(struct ThemePartDesc*);
    void applyPartDescription(Evas_Object*, struct ThemePartDesc*);

    struct ThemePartCacheEntry {
        FormType type;
        IntSize size;
        Ecore_Evas* ee;
        Evas_Object* o;
        cairo_surface_t* surface;
    };

    struct ThemePartDesc m_partDescs[FormTypeLast];

    // this should be small and not so frequently used,
    // so use a vector and do linear searches
    Vector<struct ThemePartCacheEntry *> m_partCache;

    // get (use, create or replace) entry from cache
    struct ThemePartCacheEntry* cacheThemePartGet(FormType, const IntSize&);
    // flush cache, deleting all entries
    void cacheThemePartFlush();

    // internal, used by cacheThemePartGet()
    bool themePartCacheEntryReset(struct ThemePartCacheEntry*, FormType);
    bool themePartCacheEntrySurfaceCreate(struct ThemePartCacheEntry*);
    struct ThemePartCacheEntry* cacheThemePartNew(FormType, const IntSize&);
    struct ThemePartCacheEntry* cacheThemePartReset(FormType, struct ThemePartCacheEntry*);
    struct ThemePartCacheEntry* cacheThemePartResizeAndReset(FormType, const IntSize&, struct ThemePartCacheEntry*);

};
}

#endif // RenderThemeEfl_h
