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/*
For general Scribus (>=1.3.2) copyright and licensing information please refer
to the COPYING file provided with the program. Following this notice may exist
a copyright and/or license notice that predates the release of Scribus 1.3.2
for which a new license (GPL+exception) is in place.
*/

/* This file is part of the KDE project
   Copyright (C) 2001, 2002, 2003 The Karbon Developers

   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., 59 Temple Place - Suite 330,
   Boston, MA 02111-1307, USA.
*/

/* Adapted for Scribus 22.08.2003 by Franz Schmid */

#ifndef __SCPAINTER_H__
#define __SCPAINTER_H__

// libart wrapper

#include <qglobal.h>
#include <qwmatrix.h>
#include <qvaluelist.h>
#include <qvaluestack.h>
#include <qcolor.h>
#include <qfont.h>
#include <qpixmap.h>
#include <qimage.h>
#include "scribusapi.h"
#include "scconfig.h"
#include "fpoint.h"
#include "fpointarray.h"
#include "vgradient.h"

// If defined, use gdk-pixbuf for ScPainter::end() on X11 (ignored on other
// platforms). Otherwise use portable ScPainter::end() and omit X11-specific
// code and pixbuf support.
#ifndef SC_USE_PIXBUF
#define SC_USE_PIXBUF
#endif

// If defined, use Win32 GDI functions for ScPainter::end() on Win32 (ignored
// on other platforms). Otherwise use portable ScPainter::end()
#ifndef SC_USE_GDI
#define SC_USE_GDI
#endif


class QPainter;
#ifdef HAVE_CAIRO
typedef struct _cairo cairo_t;
typedef struct _cairo_surface cairo_surface_t;
#else
struct _ArtVpath;
struct _ArtBpath;
struct _ArtSVP;
struct _ArtGradientStop;
#endif

class SCRIBUS_API ScPainter
{
public:
        ScPainter( QPaintDevice *target, unsigned int w = 0, unsigned int h = 0, unsigned int x = 0, unsigned int y = 0 );
        ScPainter( QImage *target, unsigned int w = 0, unsigned int h = 0, unsigned int x = 0, unsigned int y = 0 );
#ifdef HAVE_CAIRO
        ScPainter( QImage *target, unsigned int w, unsigned int h, double transparency, int blendmode );
        ScPainter( QString target, unsigned int w, unsigned int h, double transparency, int blendmode );
#endif
        virtual ~ScPainter();
        enum FillMode { None, Solid, Gradient };
#ifdef HAVE_CAIRO
        virtual void beginLayer(double transparency, int blendmode);
        virtual void endLayer();
#endif
        virtual void begin();
        virtual void end();
        void clear();
        virtual void clear( const QColor & );

        // matrix manipulation
        virtual void setWorldMatrix( const QWMatrix & );
        virtual const QWMatrix worldMatrix();
        virtual void setZoomFactor( double );
        virtual double zoomFactor() { return m_zoomFactor; }
        virtual void translate( double, double );
        virtual void rotate( double );
        virtual void scale( double, double );

        // drawing
        virtual void moveTo( const double &, const double & );
        virtual void lineTo( const double &, const double & );
        virtual void curveTo( FPoint p1, FPoint p2, FPoint p3 );
        virtual void newPath();
        virtual void closePath();
        virtual void fillTextPath();
        virtual void strokeTextPath();
        virtual void fillPath();
        virtual void strokePath();
        virtual void setFillRule( bool fillRule );
        virtual bool fillRule() { return m_fillRule; }
        virtual void setFillMode( int fill );
        virtual void setGradient( VGradient::VGradientType mode, FPoint orig, FPoint vec, FPoint foc = FPoint(0,0));
        virtual void setClipPath();
#ifndef HAVE_CAIRO
        virtual void setClipPath2(FPointArray *points, bool closed);
#endif

        virtual void drawImage( QImage *image );
        virtual void setupPolygon(FPointArray *points, bool closed = true);
        virtual void setupTextPolygon(FPointArray *points);
        virtual void drawPolygon();
        virtual void drawPolyLine();
        virtual void drawLine(FPoint start, FPoint end);
        virtual void drawRect(double, double, double, double);

        // pen + brush
        virtual QColor pen();
        virtual QColor brush();
        virtual void setPen( const QColor & );
        virtual void setPen( const QColor &c, double w, Qt::PenStyle st, Qt::PenCapStyle ca, Qt::PenJoinStyle jo );
        virtual void setPenOpacity( double op );
        virtual void setLineWidth( double w);
        virtual void setDash(const QValueList<double>& array, double ofs);
        virtual void setBrush( const QColor & );
        virtual void setBrushOpacity( double op );
        virtual void setOpacity( double op );
        virtual void setFont( const QFont &f );
        virtual QFont font();


        // stack management
        virtual void save();
        virtual void restore();

        //
        virtual void setRasterOp( int op );

        virtual QPaintDevice *device() { return m_target; }
        unsigned char *buffer() { return m_buffer; }
        VGradient fill_gradient;
        VGradient stroke_gradient;

private:
#ifdef HAVE_CAIRO
        void drawVPath( int mode );
#else
        void drawVPath( struct _ArtVpath *vec, int mode, bool preCal = false );
        void applyGradient( _ArtSVP *svp, bool fill );
        virtual void resize( unsigned int w, unsigned int h );
        _ArtGradientStop *buildStopArray( VGradient &gradient, int & );
        void clampToViewport( const _ArtSVP &svp, int &x0, int &y0, int &x1, int &y1 );
        void clampToViewport( int &x0, int &y0, int &x1, int &y1 );
        void ensureSpace( unsigned int );
        struct _ArtBpath *m_path;
        struct _ArtBpath *m_path2;
        struct _ArtSVP *m_clipPath;
#endif
        unsigned int m_index;
        unsigned int m_alloccount;
        unsigned char *m_buffer;
        QPaintDevice *m_target;
        QImage *m_image;
        QImage  tmp_image;
        double  m_layerTransparency;
        int  m_blendMode;
        QPixmap pixm;
        unsigned int m_width;
        unsigned int m_height;
        unsigned int m_x;
        unsigned int m_y;
        QWMatrix m_matrix;
        QFont m_font;
        bool mf_underline;
        bool mf_strikeout;
        bool mf_shadow;
        bool mf_outlined;
        /*! \brief Filling */
        QColor m_fill;
        double fill_trans;
        bool m_fillRule;
        int fillMode;                           // 0 = none, 1 = solid, 2 = gradient
        int gradientMode;               // 1 = linear, 2 = radial
        /*! \brief Stroking */
        QColor m_stroke;
        double stroke_trans;
        double LineWidth;

        /*! \brief Line End Style */
  Qt::PenCapStyle PLineEnd;
  /*! \brief Line Join Style */
  Qt::PenJoinStyle PLineJoin;
  /*! \brief The Dash Array */
        QValueList<double> m_array;
        double m_offset;
        /*! \brief Transformation Stack */
        QValueStack<QWMatrix> MStack;
        /*! \brief Zoom Factor of the Painter */
        double m_zoomFactor;
        bool imageMode;
        bool layeredMode;
        bool svgMode;
#if defined(Q_WS_X11) && defined(SC_USE_PIXBUF)
#ifdef HAVE_CAIRO
        cairo_t *m_cr;
        struct layerProp
        {
                cairo_surface_t *data;
                int blendmode;
                double tranparency;
        };
        QValueStack<layerProp> Layers;
#else
        GC gc;
#endif
#elif defined(_WIN32) && defined(SC_USE_GDI)
        HDC dc;
#endif
};

#endif