/*
 * Copyright (C) 2007 Gustavo Pichorim Boiko <boiko@mandriva.com>
 * Copyright (C) 2006 Laurent Montel<lmontel@mandriva.com>
 *
 * renderGradient() code adapted from the Plastik stype
 * Copyright (C) 2003 Sandro Giessl <ceebx@users.sourceforge.net>
 *
 * based on KDE3 HighColor Style (version 1.0)
 * Copyright (C) 2001-2002 Karol Szwed      <gallium@kde.org>
 *           (C) 2001-2002 Fredrik Höglund  <fredrik@kde.org>
 *
 * Drawing routines adapted from the KDE2 HCStyle,
 * Copyright (C) 2000 Daniel M. Duley       <mosfet@kde.org>
 *           (C) 2000 Dirk Mueller          <mueller@kde.org>
 *           (C) 2001 Martijn Klingens      <klingens@kde.org>
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Library General Public
 * License version 2 as published by the Free Software Foundation.
 *
 * 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., 59 Temple Place - Suite 330,
 * Boston, MA 02111-1307, USA.
 */


#ifndef __MANDRIVASTYLE_H
#define __MANDRIVASTYLE_H

#include <qbitmap.h>
#include <qintdict.h>
#include <kdrawutil.h>
#include <kpixmap.h>
#include <kstyle.h>
#include <qintcache.h>

class QPopupMenu;


class MandrivaStyle : public KStyle
{
    Q_OBJECT

public:
    MandrivaStyle();
    virtual ~MandrivaStyle();

    void polish( QWidget* widget );
    void unPolish( QWidget* widget );
    void polish( QApplication *app );
    void renderMenuBlendPixmap( KPixmap& pix, const QColorGroup &cg,
                                const QPopupMenu* popup ) const;

    void drawKStylePrimitive( KStylePrimitive kpe,
                              QPainter* p,
                              const QWidget* widget,
                              const QRect &r,
                              const QColorGroup &cg,
                              SFlags flags = Style_Default,
                              const QStyleOption& = QStyleOption::Default ) const;

    void drawPrimitive( PrimitiveElement pe,
                        QPainter* p,
                        const QRect &r,
                        const QColorGroup &cg,
                        SFlags flags = Style_Default,
                        const QStyleOption& = QStyleOption::Default ) const;

    void drawControl( ControlElement element,
                      QPainter *p,
                      const QWidget *widget,
                      const QRect &r,
                      const QColorGroup &cg,
                      SFlags flags = Style_Default,
                      const QStyleOption& = QStyleOption::Default ) const;

    void drawControlMask( ControlElement element,
                          QPainter *p,
                          const QWidget *widget,
                          const QRect &r,
                          const QStyleOption& = QStyleOption::Default ) const;

    void drawComplexControl( ComplexControl control,
                             QPainter *p,
                             const QWidget *widget,
                             const QRect &r,
                             const QColorGroup &cg,
                             SFlags flags = Style_Default,
                             SCFlags controls = SC_All,
                             SCFlags active = SC_None,
                             const QStyleOption& = QStyleOption::Default ) const;

    void drawComplexControlMask( ComplexControl control,
                                 QPainter *p,
                                 const QWidget *widget,
                                 const QRect &r,
                                 const QStyleOption& = QStyleOption::Default ) const;

    int pixelMetric( PixelMetric m,
                     const QWidget *widget = 0 ) const;

    QSize sizeFromContents( ContentsType contents,
                            const QWidget *widget,
                            const QSize &contentSize,
                            const QStyleOption& opt ) const;

    QRect subRect( SubRect r,
                   const QWidget *widget ) const;

    // Fix Qt3's wacky image positions
    QPixmap stylePixmap( StylePixmap stylepixmap,
                         const QWidget *widget = 0,
                         const QStyleOption& = QStyleOption::Default ) const;

    QRect querySubControlMetrics( ComplexControl control,
                                  const QWidget* widget,
                                  SubControl subcontrol,
                                  const QStyleOption& opt = QStyleOption::Default ) const;

protected:
    enum Hover
    {
        HoverNone = 0,
        // scrollbar
        HoverScrollBarSlider,
        HoverScrollBarAddLine,
        HoverScrollBarSubLine,
        HoverScrollBarAddPage,
        HoverScrollBarSubPage,
        HoverScrollBarFirst,
        HoverScrollBarLast,
        // combobox
        HoverComboBoxArrow,
        HoverComboBoxEdit
    };


    bool eventFilter( QObject *object, QEvent *event );

    void renderGradient(QPainter* p,
                        const QRect& r,
                        const QColor& ca,
                        const QColor& cb ,
                        bool horizontal) const;

    QWidget    *hoverWidget;
    enum Hover hoverControl;

    struct MandrivaColorData 
    {
        ~MandrivaColorData();
        QRgb spotColor;

        // gradient color
        //rename to grey
        QColor shades[7];
        
        // five blue color
        QColor blueMdkColor[5];

        // button gradients 
        QColor buttonColor[7];
        
        
        QColor radioColor;

        bool isGroup (const QColorGroup &cg) 
        {
            return cg.button() == buttonColor[0] && cg.highlight().rgb() == spotColor;
        }
    };

private:
    enum TabPosition {Single = 0,First,Last, Middle};

    // Disable copy constructor and = operator
    MandrivaStyle( const MandrivaStyle & );
    MandrivaStyle& operator=( const MandrivaStyle & );

    void drawButton( const MandrivaColorData *cdata, 
                     const QRect & r, QPainter *p,
                     const QColorGroup &cg, 
                     SFlags flags) const;

    void drawHandlePoint ( const MandrivaColorData *cdata,
                           QPainter *p, 
                           int x, 
                           int y) const;

    void drawHandle( const MandrivaColorData *cdata, 
                     QPainter *p,
                     const QRect &r,
                     const QColorGroup &cg,
                     SFlags flags, 
                     const QStyleOption& opt, 
                     bool drawBorderAndGradient, 
                     bool drawGradient = false ) const;

    void drawGroupBox(const MandrivaColorData *cdata, 
                      const QColorGroup & cg, 
                      QPainter *p, 
                      const QRect & r, 
                      bool active, 
                      bool sunken )const;

    void drawLineSeparator(const MandrivaColorData *cdata, 
                           const QColorGroup & cg, 
                           QPainter *p, 
                           const QRect & r, 
                           bool horiziontal,
                           bool active, 
                           bool sunken,
                           bool skipOffset = true) const;

    void drawFrame( const MandrivaColorData *cdata, 
                    const QColorGroup & cg, 
                    QPainter *p, 
                    const QRect & r, 
                    bool active) const;

    void drawComboboxArrow( QPainter *p,
                            const QWidget *widget,
                            const QRect &r,
                            const QColorGroup &cg,
                            SFlags flags,
                            SCFlags active)const;

    void drawMandrivaArrow( QPointArray a, QPainter *p,
                            const QRect &r,
                            const QColorGroup &cg,
                            SFlags flags,
                            const QStyleOption& opt ) const;


    MandrivaColorData *realizeData (const QColorGroup &cg) const;
    const MandrivaColorData *lookupData (const QColorGroup &cg) const;
    bool isFormWidget(const QWidget* widget) const;
    bool excludeColor(const QColor &col, bool active) const;
    void getShade (const QColorGroup &cg, int shadenr, QColor &res) const;
    void updateHoverControl(const QPoint &pos);
    QIntCache<MandrivaColorData> m_dataCache;
    static const double shading[8];
    mutable bool formMode;
    bool kickerMode;
    // For KPE_ListViewBranch
    mutable QBitmap *verticalLine;
    mutable QBitmap *horizontalLine;

    // pixmap cache.
    enum CacheEntryType 
    {
        cSurface,
        cGradientTile,
        cAlphaDot
    };
    struct CacheEntry
    {
        CacheEntryType type;
        int width;
        int height;
        QRgb c1Rgb;
        QRgb c2Rgb;
        bool horizontal;

        QPixmap* pixmap;

        CacheEntry(CacheEntryType t, int w, int h, QRgb c1, QRgb c2 = 0,
                   bool hor = false, QPixmap* p = 0 ):
            type(t), width(w), height(h), c1Rgb(c1), c2Rgb(c2), horizontal(hor), pixmap(p)
        {}

        ~CacheEntry()
        {
            delete pixmap;
        }

        int key()
        {
            // create an int key from the properties which is used to refer to entries in the QIntCache.
            // the result may not be 100% correct as we don't have so much space in one integer -- use
            // == operator after find to make sure we got the right one. :)
            return horizontal ^ (type<<1) ^ (width<<5) ^ (height<<10) ^ (c1Rgb<<19) ^ (c2Rgb<<22);
        }

        bool operator == (const CacheEntry& other)
        {
            bool match = (type == other.type) &&
                        (width   == other.width) &&
                        (height == other.height) &&
                        (c1Rgb == other.c1Rgb) &&
                        (c1Rgb == other.c1Rgb) &&
                        (horizontal == other.horizontal);
            return match;
        }
    };
    QIntCache<CacheEntry> *pixmapCache;

};

#endif

// vim: ts=4 et sw=4