Copy the KDE 3.5 branch to branches/trinity for new KDE 3.5 features.

BUG:215923


git-svn-id: svn://anonsvn.kde.org/home/kde/branches/trinity/kdegraphics@1054174 283d02a7-25f6-0310-bc7c-ecb5cbfe19da

1 files changed, 500 insertions, 0 deletions

diff --git a/ksvg/plugin/backends/agg/AggCanvasItems.h b/ksvg/plugin/backends/agg/AggCanvasItems.h
new file mode 100644
index 00000000..a8c242ec
--- /dev/null
+++ b/ksvg/plugin/backends/agg/AggCanvasItems.h
@@ -0,0 +1,500 @@
+/*
+    Copyright (C) 2001-2003 KSVG Team
+    This file is part of the KDE project
+
+    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
+    aint 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 AGGCANVASITEMS_H
+#define AGGCANVASITEMS_H
+
+#include "CanvasItem.h"
+#include "CanvasItems.h"
+#include "BezierPathAgg.h"
+
+#include "SVGPathElementImpl.h"
+#include "SVGPolyElementImpl.h"
+#include "SVGLineElementImpl.h"
+#include "SVGRectElementImpl.h"
+#include "SVGTextElementImpl.h"
+#include "SVGImageElementImpl.h"
+#include "SVGCircleElementImpl.h"
+#include "SVGEllipseElementImpl.h"
+
+#include "agg_basics.h"
+#include "agg_conv_transform.h"
+#include "agg_conv_curve.h"
+#include "agg_conv_dash.h"
+#include "agg_conv_stroke.h"
+#include "agg_conv_clip_polygon.h"
+#include "agg_span_gradient.h"
+
+#include "SVGBBoxTarget.h"
+
+// gradient helpers
+
+//------------------------------------------------------------------------
+class gradient_polymorphic_wrapper_base
+{
+public:
+    virtual int calculate(int x, int y, int) const = 0;
+};
+
+template<class GradientF>
+class gradient_polymorphic_wrapper : public gradient_polymorphic_wrapper_base
+{
+public:
+    virtual int calculate(int x, int y, int d) const
+    {
+        return m_gradient.calculate(x, y, d);
+    }
+private:
+    GradientF m_gradient;
+};
+
+class gradient_radial_repeat
+{
+public:
+    int calculate(int x, int y, int d) const
+    {
+	return int(sqrt(pow(x, 2) + pow(y, 2))) % d;
+    }
+};
+
+class gradient_radial_reflect
+{
+public:
+    int calculate(int x, int y, int d) const
+    {
+	int dist = int(sqrt(pow(x, 2) + pow(y, 2)));
+	if((dist / d) % 2 == 0)
+		return dist % d;
+	else
+		return d - (dist % d);
+    }
+};
+
+class gradient_linear_repeat
+{
+public:
+    int calculate(int x, int y, int d) const
+    {
+        return (x < 0) ? (d - (-x % d)) : (x % d);
+    }
+};
+
+class gradient_linear_reflect
+{
+public:
+    int calculate(int x, int y, int d) const
+    {
+	if((abs(x) / d) % 2 == 0)
+	        return (x < 0) ? (-x % d) : (x % d);
+	else
+	        return (x > 0) ? (d - (x % d)) : (d - (-x % d));
+    }
+};
+
+
+#define AGG_CLASS(Class, Type, Member) \
+class Agg##Class : public AggShape \
+{ \
+public: \
+    Agg##Class(AggCanvas *c, Type *Member); \
+    virtual ~Agg##Class() { } \
+	virtual void draw(); \
+	virtual bool isVisible(); \
+	virtual void init(); \
+	virtual void init(const SVGMatrixImpl *screenCTM); \
+	virtual SVGElementImpl *element() const { return m_##Member; } \
+protected: \
+    Type *m_##Member; \
+};
+
+class stroke_dash_base
+{
+public:
+	virtual ~stroke_dash_base() {}
+
+	virtual void     rewind(unsigned) = 0;
+        virtual unsigned vertex(double*, double*) = 0;
+};
+
+template<class Source>
+class stroke : public stroke_dash_base
+{
+public:
+	typedef agg::conv_stroke<Source> stroke_type;
+
+	stroke(Source& src, KSVG::SVGStylableImpl *style);
+
+	void rewind(unsigned id) { m_s.rewind(id); }
+	unsigned vertex(double* x, double* y) { return m_s.vertex(x, y); }
+
+private:
+	stroke_type m_s;
+};
+
+template<class Source>
+class dash_stroke : public stroke_dash_base
+{
+public:
+	typedef agg::conv_dash<Source> dash_type;
+	typedef agg::conv_stroke<dash_type> dash_stroke_type;
+
+	dash_stroke(Source& src, KSVG::SVGStylableImpl *style);
+
+	void rewind(unsigned id) { m_ds.rewind(id); }
+	unsigned vertex(double* x, double* y) { return m_ds.vertex(x, y); }
+
+private:
+	dash_type m_d;
+	dash_stroke_type m_ds;
+};
+
+template<class Source>
+class dash_stroke_simple
+{
+public:
+	dash_stroke_simple(Source& src, KSVG::SVGStylableImpl *style);
+	~dash_stroke_simple() { delete impl; }
+
+	void rewind(unsigned id) { impl->rewind(id); }
+	unsigned vertex(double* x, double* y) { return impl->vertex(x, y); }
+
+private:
+	stroke_dash_base *impl;
+};
+
+typedef dash_stroke_simple<curved>                     curved_stroked;
+typedef agg::conv_transform<curved_stroked>          curved_stroked_trans;
+typedef agg::conv_clip_polygon<curved_stroked_trans> curved_stroked_trans_clipped;
+typedef agg::conv_clip_polygon<curved_trans>         curved_trans_clipped;
+//typedef agg::conv_contour<curved_trans>              curved_trans_contour;
+//typedef agg::conv_clip_polygon<curved_trans_contour> curved_trans_contour_clipped;
+
+namespace KSVG
+{
+	class SVGGradientElementImpl;
+	class SVGRadialGradientElementImpl;
+	class SVGLinearGradientElementImpl;
+	class SVGPatternElementImpl;
+
+	class AggPaintServer : public CanvasPaintServer
+	{
+	public:
+		AggPaintServer() : CanvasPaintServer() {}
+		virtual ~AggPaintServer() {}
+
+		virtual void finalizePaintServer() = 0;
+		virtual void reference(const QString &href) = 0;
+
+		virtual void render(AggCanvas *c) = 0;
+	};
+
+	class AggGradient : public AggPaintServer
+	{
+	public:
+		AggGradient(SVGGradientElementImpl *gradient);
+		virtual ~AggGradient() {}
+
+		void parseGradientStops(SVGGradientElementImpl *gradient);
+
+		virtual void finalizePaintServer();
+		virtual void reference(const QString &href);
+
+	protected:
+		SVGGradientElementImpl *m_gradient;
+		agg::rgba8 m_colorprofile[256];
+	};
+
+	class AggLinearGradient : public AggGradient
+	{
+	public:
+		AggLinearGradient(SVGLinearGradientElementImpl *linear) : AggGradient(linear) {}
+
+		virtual void render(AggCanvas *c);
+
+	protected:
+		gradient_polymorphic_wrapper<agg::gradient_x> m_linPad;
+		gradient_polymorphic_wrapper<gradient_linear_repeat> m_linRepeat;
+		gradient_polymorphic_wrapper<gradient_linear_reflect> m_linReflect;
+	};
+
+	class AggRadialGradient : public AggGradient
+	{
+	public:
+		AggRadialGradient(SVGRadialGradientElementImpl *radial) : AggGradient(radial) {}
+
+		virtual void render(AggCanvas *c);
+
+	protected:
+		gradient_polymorphic_wrapper<agg::gradient_circle> m_radialPad;
+		gradient_polymorphic_wrapper<gradient_radial_repeat> m_radialRepeat;
+		gradient_polymorphic_wrapper<gradient_radial_reflect> m_radialReflect;
+	};
+
+	class AggPattern : public AggPaintServer
+	{
+	public:
+		AggPattern(SVGPatternElementImpl *pattern);
+		virtual ~AggPattern() {}
+
+		virtual void finalizePaintServer();
+		virtual void reference(const QString &);
+
+		virtual void render(AggCanvas *c);
+
+	protected:
+		SVGPatternElementImpl *m_pattern;
+	};
+
+	class AggCanvas;
+
+	class AggFillPaintServer
+	{
+	public:
+		AggFillPaintServer(SVGStylableImpl *style);
+		void update(SVGStylableImpl *style);
+		template<class VertexSource>
+		void draw(AggCanvas *canvas, VertexSource &vs, SVGStylableImpl *style, SVGShapeImpl *shape);
+
+	private:
+		agg::rgba8 m_color;
+	};
+
+	class AggStrokePaintServer
+	{
+	public:
+		AggStrokePaintServer(SVGStylableImpl *style);
+		void update(SVGStylableImpl *style);
+		template<class VertexSource>
+		void draw(AggCanvas *canvas, VertexSource &vs, SVGStylableImpl *style, SVGShapeImpl *shape);
+
+	private:
+		agg::rgba8 m_color;
+	};
+
+	class BezierPathAggStroked : public T2P::BezierPathAgg
+	{
+	public:
+		BezierPathAggStroked(SVGStylableImpl *style);
+		BezierPathAggStroked(const T2P::BezierPathAgg &other, SVGStylableImpl *style);
+
+		curved_trans_clipped			m_curved_trans_clipped;
+		curved_stroked					m_curved_stroked;
+		curved_stroked_trans			m_curved_stroked_trans;
+		curved_stroked_trans_clipped	m_curved_stroked_trans_clipped;
+		SVGStylableImpl					*m_style;
+	};
+
+	class AggShape : public CanvasItem, public BezierPathAggStroked
+	{
+	public:
+		AggShape(AggCanvas *c, SVGStylableImpl *style);
+		virtual ~AggShape();
+
+		virtual QRect bbox() const;
+		virtual bool fillContains(const QPoint &p);
+		virtual bool strokeContains(const QPoint &p);
+		virtual void update(CanvasItemUpdate reason, int param1 = 0, int param2 = 0);
+		void draw(SVGShapeImpl *shape);
+		void calcSVPs(const SVGMatrixImpl *matrix);
+		virtual void init();
+		virtual void init(const SVGMatrixImpl *);
+		bool isVisible(SVGShapeImpl *shape);
+
+		void setRenderContext(RenderContext context) { m_context = context; }
+
+		agg::path_storage &storage() { return m_storage; }
+		agg::trans_affine &transform() { return m_transform; }
+
+	protected:
+		void freeSVPs();
+
+		RenderContext			m_context;
+		AggCanvas			*m_canvas;
+		QRect				m_bbox;
+		AggFillPaintServer		*m_fillPainter;
+		AggStrokePaintServer		*m_strokePainter;
+	};
+
+	AGG_CLASS(Rectangle, SVGRectElementImpl, rect)
+	AGG_CLASS(Ellipse, SVGEllipseElementImpl, ellipse)
+	AGG_CLASS(Circle, SVGCircleElementImpl, circle)
+
+	class AggLine : public AggShape, public MarkerHelper
+	{
+	public:
+		AggLine(AggCanvas *c, SVGLineElementImpl *line);
+		virtual ~AggLine();
+
+		virtual void draw();
+		virtual bool isVisible();
+		virtual void init();
+		virtual void init(const SVGMatrixImpl *screenCTM);
+
+		virtual SVGElementImpl *element() const { return m_line; }
+
+	protected:
+		SVGLineElementImpl *m_line;
+	};
+
+	class AggPoly : public AggShape, public MarkerHelper
+	{
+	public:
+		AggPoly(AggCanvas *c, SVGPolyElementImpl *poly);
+		virtual ~AggPoly();
+
+		virtual void draw();
+		virtual bool isVisible();
+		virtual void init();
+		virtual void init(const SVGMatrixImpl *screenCTM) = 0;
+
+		virtual SVGElementImpl *element() const { return m_poly; }
+
+	protected:
+		SVGPolyElementImpl *m_poly;
+
+	};
+	class AggPolyline : public AggPoly
+	{
+	public:
+		AggPolyline(AggCanvas *c, SVGPolylineElementImpl *poly);
+		virtual ~AggPolyline();
+
+		virtual void init(const SVGMatrixImpl *screenCTM);
+	};
+
+	class AggPolygon : public AggPoly
+	{
+	public:
+		AggPolygon(AggCanvas *c, SVGPolygonElementImpl *poly);
+		virtual ~AggPolygon();
+
+		virtual void init(const SVGMatrixImpl *screenCTM);
+	};
+
+	class AggPath : public AggShape, public ::SVGPathParser, public MarkerHelper
+	{
+	public:
+		AggPath(AggCanvas *c, SVGPathElementImpl *path);
+		virtual ~AggPath();
+
+		virtual void draw();
+		virtual bool isVisible();
+		virtual void init();
+		virtual void init(const SVGMatrixImpl *screenCTM);
+
+		virtual SVGElementImpl *element() const { return m_path; }
+
+	protected:
+		SVGPathElementImpl *m_path;
+
+		virtual void svgMoveTo(double x1, double y1, bool closed, bool abs = true);
+		virtual void svgLineTo(double x1, double y1, bool abs = true);
+		virtual void svgCurveToCubic(double x1, double y1, double x2, double y2, double x, double y, bool abs = true);
+		virtual void svgClosePath();
+	};
+
+	class AggMarker : public CanvasMarker
+	{
+	public:
+		AggMarker(AggCanvas *c, SVGMarkerElementImpl *marker);
+		virtual ~AggMarker();
+
+		virtual QRect bbox() const { return QRect(); }
+		virtual bool fillContains(const QPoint &) { return true; }
+		virtual bool strokeContains(const QPoint &) { return true; }
+		virtual void update(CanvasItemUpdate, int = 0, int = 0) { }
+		virtual void init();
+		virtual void draw();
+		virtual bool isVisible() { return false; }
+
+		void draw(SVGShapeImpl *obj, int x, int y, float lwidth = 1.0, double angle = 0.0);
+		//const ArtSVP *clippingRectangle() const { return m_clippingRectangle; }
+
+	protected:
+		AggCanvas *m_canvas;
+		//ArtSVP *m_clippingRectangle;
+	};
+
+	class AggImage : public CanvasItem
+	{
+	public:
+		AggImage(AggCanvas *c, SVGImageElementImpl *image);
+		virtual ~AggImage();
+
+		virtual QRect bbox() const;
+		virtual bool fillContains(const QPoint &) { return true; }
+		virtual bool strokeContains(const QPoint &) { return true; }
+		virtual void update(CanvasItemUpdate, int = 0, int = 0) { }
+		virtual void init();
+		virtual void draw();
+		virtual bool isVisible();
+
+		virtual SVGElementImpl *element() const { return m_image; }
+
+	protected:
+		AggCanvas *m_canvas;
+		SVGImageElementImpl *m_image;
+	};
+
+	class AggText : public CanvasText
+	{
+	public:
+		AggText(AggCanvas *c, SVGTextElementImpl *text);
+		virtual ~AggText();
+
+		virtual QRect bbox() const;
+		virtual bool fillContains(const QPoint &p);
+		virtual bool strokeContains(const QPoint &p);
+		virtual void update(CanvasItemUpdate, int param1 = 0, int param2 = 0);
+		virtual void draw();
+		virtual bool isVisible();
+		virtual void init();
+		virtual void init(const SVGMatrixImpl *screenCTM);
+
+		virtual void renderCallback(SVGTextContentElementImpl *element, const SVGMatrixImpl *screenCTM, T2P::GlyphSet *glyph, T2P::GlyphLayoutParams *params, double anchor) const;
+
+		virtual void addTextDecoration(SVGTextContentElementImpl *element, double x, double y, double w, double h) const;
+
+		unsigned operator [](unsigned) const { return 0; }
+
+	protected:
+		AggCanvas *m_canvas;
+
+	private:
+		void clearCurved();
+		class SVPElement
+		{
+		public:
+			SVPElement() { svp = 0; element = 0; fillPainter = 0; strokePainter = 0; } 
+			~SVPElement();
+
+			BezierPathAggStroked		*svp;
+			SVGTextContentElementImpl 	*element;
+			AggFillPaintServer			*fillPainter;
+			AggStrokePaintServer		*strokePainter;
+		};
+
+		mutable QPtrList<SVPElement> m_drawItems;
+	};
+};
+
+#endif
+
+// vim:ts=4:noet