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501 lines
13 KiB
501 lines
13 KiB
/*
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Copyright (C) 2001-2003 KSVG Team
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This file is part of the KDE project
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public
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License as published by the Free Software Foundation; either
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version 2 of the License, or (at your option) any later version.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public License
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aint with this library; see the file COPYING.LIB. If not, write to
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the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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Boston, MA 02110-1301, USA.
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*/
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#ifndef AGGCANVASITEMS_H
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#define AGGCANVASITEMS_H
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#include "CanvasItem.h"
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#include "CanvasItems.h"
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#include "BezierPathAgg.h"
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#include "SVGPathElementImpl.h"
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#include "SVGPolyElementImpl.h"
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#include "SVGLineElementImpl.h"
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#include "SVGRectElementImpl.h"
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#include "SVGTextElementImpl.h"
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#include "SVGImageElementImpl.h"
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#include "SVGCircleElementImpl.h"
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#include "SVGEllipseElementImpl.h"
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#include "agg_basics.h"
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#include "agg_conv_transform.h"
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#include "agg_conv_curve.h"
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#include "agg_conv_dash.h"
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#include "agg_conv_stroke.h"
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#include "agg_conv_clip_polygon.h"
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#include "agg_span_gradient.h"
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#include "SVGBBoxTarget.h"
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// gradient helpers
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//------------------------------------------------------------------------
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class gradient_polymorphic_wrapper_base
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{
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public:
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virtual int calculate(int x, int y, int) const = 0;
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};
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template<class GradientF>
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class gradient_polymorphic_wrapper : public gradient_polymorphic_wrapper_base
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{
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public:
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virtual int calculate(int x, int y, int d) const
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{
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return m_gradient.calculate(x, y, d);
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}
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private:
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GradientF m_gradient;
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};
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class gradient_radial_repeat
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{
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public:
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int calculate(int x, int y, int d) const
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{
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return int(sqrt(pow(x, 2) + pow(y, 2))) % d;
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}
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};
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class gradient_radial_reflect
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{
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public:
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int calculate(int x, int y, int d) const
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{
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int dist = int(sqrt(pow(x, 2) + pow(y, 2)));
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if((dist / d) % 2 == 0)
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return dist % d;
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else
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return d - (dist % d);
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}
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};
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class gradient_linear_repeat
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{
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public:
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int calculate(int x, int y, int d) const
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{
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return (x < 0) ? (d - (-x % d)) : (x % d);
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}
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};
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class gradient_linear_reflect
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{
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public:
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int calculate(int x, int y, int d) const
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{
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if((abs(x) / d) % 2 == 0)
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return (x < 0) ? (-x % d) : (x % d);
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else
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return (x > 0) ? (d - (x % d)) : (d - (-x % d));
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}
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};
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#define AGG_CLASS(Class, Type, Member) \
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class Agg##Class : public AggShape \
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{ \
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public: \
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Agg##Class(AggCanvas *c, Type *Member); \
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virtual ~Agg##Class() { } \
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virtual void draw(); \
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virtual bool isVisible(); \
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virtual void init(); \
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virtual void init(const SVGMatrixImpl *screenCTM); \
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virtual SVGElementImpl *element() const { return m_##Member; } \
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protected: \
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Type *m_##Member; \
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};
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class stroke_dash_base
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{
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public:
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virtual ~stroke_dash_base() {}
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virtual void rewind(unsigned) = 0;
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virtual unsigned vertex(double*, double*) = 0;
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};
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template<class Source>
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class stroke : public stroke_dash_base
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{
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public:
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typedef agg::conv_stroke<Source> stroke_type;
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stroke(Source& src, KSVG::SVGStylableImpl *style);
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void rewind(unsigned id) { m_s.rewind(id); }
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unsigned vertex(double* x, double* y) { return m_s.vertex(x, y); }
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private:
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stroke_type m_s;
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};
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template<class Source>
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class dash_stroke : public stroke_dash_base
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{
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public:
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typedef agg::conv_dash<Source> dash_type;
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typedef agg::conv_stroke<dash_type> dash_stroke_type;
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dash_stroke(Source& src, KSVG::SVGStylableImpl *style);
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void rewind(unsigned id) { m_ds.rewind(id); }
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unsigned vertex(double* x, double* y) { return m_ds.vertex(x, y); }
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private:
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dash_type m_d;
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dash_stroke_type m_ds;
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};
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template<class Source>
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class dash_stroke_simple
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{
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public:
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dash_stroke_simple(Source& src, KSVG::SVGStylableImpl *style);
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~dash_stroke_simple() { delete impl; }
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void rewind(unsigned id) { impl->rewind(id); }
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unsigned vertex(double* x, double* y) { return impl->vertex(x, y); }
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private:
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stroke_dash_base *impl;
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};
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typedef dash_stroke_simple<curved> curved_stroked;
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typedef agg::conv_transform<curved_stroked> curved_stroked_trans;
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typedef agg::conv_clip_polygon<curved_stroked_trans> curved_stroked_trans_clipped;
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typedef agg::conv_clip_polygon<curved_trans> curved_trans_clipped;
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//typedef agg::conv_contour<curved_trans> curved_trans_contour;
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//typedef agg::conv_clip_polygon<curved_trans_contour> curved_trans_contour_clipped;
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namespace KSVG
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{
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class SVGGradientElementImpl;
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class SVGRadialGradientElementImpl;
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class SVGLinearGradientElementImpl;
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class SVGPatternElementImpl;
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class AggPaintServer : public CanvasPaintServer
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{
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public:
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AggPaintServer() : CanvasPaintServer() {}
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virtual ~AggPaintServer() {}
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virtual void finalizePaintServer() = 0;
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virtual void reference(const TQString &href) = 0;
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virtual void render(AggCanvas *c) = 0;
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};
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class AggGradient : public AggPaintServer
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{
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public:
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AggGradient(SVGGradientElementImpl *gradient);
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virtual ~AggGradient() {}
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void parseGradientStops(SVGGradientElementImpl *gradient);
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virtual void finalizePaintServer();
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virtual void reference(const TQString &href);
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protected:
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SVGGradientElementImpl *m_gradient;
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agg::rgba8 m_colorprofile[256];
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};
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class AggLinearGradient : public AggGradient
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{
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public:
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AggLinearGradient(SVGLinearGradientElementImpl *linear) : AggGradient(linear) {}
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virtual void render(AggCanvas *c);
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protected:
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gradient_polymorphic_wrapper<agg::gradient_x> m_linPad;
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gradient_polymorphic_wrapper<gradient_linear_repeat> m_linRepeat;
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gradient_polymorphic_wrapper<gradient_linear_reflect> m_linReflect;
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};
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class AggRadialGradient : public AggGradient
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{
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public:
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AggRadialGradient(SVGRadialGradientElementImpl *radial) : AggGradient(radial) {}
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virtual void render(AggCanvas *c);
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protected:
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gradient_polymorphic_wrapper<agg::gradient_circle> m_radialPad;
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gradient_polymorphic_wrapper<gradient_radial_repeat> m_radialRepeat;
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gradient_polymorphic_wrapper<gradient_radial_reflect> m_radialReflect;
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};
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class AggPattern : public AggPaintServer
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{
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public:
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AggPattern(SVGPatternElementImpl *pattern);
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virtual ~AggPattern() {}
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virtual void finalizePaintServer();
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virtual void reference(const TQString &);
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virtual void render(AggCanvas *c);
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protected:
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SVGPatternElementImpl *m_pattern;
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};
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class AggCanvas;
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class AggFillPaintServer
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{
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public:
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AggFillPaintServer(SVGStylableImpl *style);
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void update(SVGStylableImpl *style);
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template<class VertexSource>
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void draw(AggCanvas *canvas, VertexSource &vs, SVGStylableImpl *style, SVGShapeImpl *shape);
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private:
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agg::rgba8 m_color;
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};
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class AggStrokePaintServer
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{
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public:
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AggStrokePaintServer(SVGStylableImpl *style);
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void update(SVGStylableImpl *style);
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template<class VertexSource>
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void draw(AggCanvas *canvas, VertexSource &vs, SVGStylableImpl *style, SVGShapeImpl *shape);
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private:
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agg::rgba8 m_color;
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};
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class BezierPathAggStroked : public T2P::BezierPathAgg
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{
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public:
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BezierPathAggStroked(SVGStylableImpl *style);
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BezierPathAggStroked(const T2P::BezierPathAgg &other, SVGStylableImpl *style);
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curved_trans_clipped m_curved_trans_clipped;
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curved_stroked m_curved_stroked;
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curved_stroked_trans m_curved_stroked_trans;
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curved_stroked_trans_clipped m_curved_stroked_trans_clipped;
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SVGStylableImpl *m_style;
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};
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class AggShape : public CanvasItem, public BezierPathAggStroked
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{
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public:
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AggShape(AggCanvas *c, SVGStylableImpl *style);
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virtual ~AggShape();
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virtual TQRect bbox() const;
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virtual bool fillContains(const TQPoint &p);
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virtual bool strokeContains(const TQPoint &p);
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virtual void update(CanvasItemUpdate reason, int param1 = 0, int param2 = 0);
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void draw(SVGShapeImpl *shape);
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void calcSVPs(const SVGMatrixImpl *matrix);
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virtual void init();
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virtual void init(const SVGMatrixImpl *);
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bool isVisible(SVGShapeImpl *shape);
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void setRenderContext(RenderContext context) { m_context = context; }
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agg::path_storage &storage() { return m_storage; }
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agg::trans_affine &transform() { return m_transform; }
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protected:
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void freeSVPs();
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RenderContext m_context;
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AggCanvas *m_canvas;
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TQRect m_bbox;
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AggFillPaintServer *m_fillPainter;
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AggStrokePaintServer *m_strokePainter;
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};
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AGG_CLASS(Rectangle, SVGRectElementImpl, rect)
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AGG_CLASS(Ellipse, SVGEllipseElementImpl, ellipse)
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AGG_CLASS(Circle, SVGCircleElementImpl, circle)
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class AggLine : public AggShape, public MarkerHelper
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{
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public:
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AggLine(AggCanvas *c, SVGLineElementImpl *line);
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virtual ~AggLine();
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virtual void draw();
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virtual bool isVisible();
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virtual void init();
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virtual void init(const SVGMatrixImpl *screenCTM);
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virtual SVGElementImpl *element() const { return m_line; }
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protected:
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SVGLineElementImpl *m_line;
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};
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class AggPoly : public AggShape, public MarkerHelper
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{
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public:
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AggPoly(AggCanvas *c, SVGPolyElementImpl *poly);
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virtual ~AggPoly();
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virtual void draw();
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virtual bool isVisible();
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virtual void init();
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virtual void init(const SVGMatrixImpl *screenCTM) = 0;
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virtual SVGElementImpl *element() const { return m_poly; }
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protected:
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SVGPolyElementImpl *m_poly;
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};
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class AggPolyline : public AggPoly
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{
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public:
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AggPolyline(AggCanvas *c, SVGPolylineElementImpl *poly);
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virtual ~AggPolyline();
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virtual void init(const SVGMatrixImpl *screenCTM);
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};
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class AggPolygon : public AggPoly
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{
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public:
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AggPolygon(AggCanvas *c, SVGPolygonElementImpl *poly);
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virtual ~AggPolygon();
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virtual void init(const SVGMatrixImpl *screenCTM);
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};
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class AggPath : public AggShape, public ::SVGPathParser, public MarkerHelper
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{
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public:
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AggPath(AggCanvas *c, SVGPathElementImpl *path);
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virtual ~AggPath();
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virtual void draw();
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virtual bool isVisible();
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virtual void init();
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virtual void init(const SVGMatrixImpl *screenCTM);
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virtual SVGElementImpl *element() const { return m_path; }
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protected:
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SVGPathElementImpl *m_path;
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virtual void svgMoveTo(double x1, double y1, bool closed, bool abs = true);
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virtual void svgLineTo(double x1, double y1, bool abs = true);
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virtual void svgCurveToCubic(double x1, double y1, double x2, double y2, double x, double y, bool abs = true);
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virtual void svgClosePath();
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};
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class AggMarker : public CanvasMarker
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{
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public:
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AggMarker(AggCanvas *c, SVGMarkerElementImpl *marker);
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virtual ~AggMarker();
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virtual TQRect bbox() const { return TQRect(); }
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virtual bool fillContains(const TQPoint &) { return true; }
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virtual bool strokeContains(const TQPoint &) { return true; }
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virtual void update(CanvasItemUpdate, int = 0, int = 0) { }
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virtual void init();
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virtual void draw();
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virtual bool isVisible() { return false; }
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void draw(SVGShapeImpl *obj, int x, int y, float lwidth = 1.0, double angle = 0.0);
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//const ArtSVP *clippingRectangle() const { return m_clippingRectangle; }
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protected:
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AggCanvas *m_canvas;
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//ArtSVP *m_clippingRectangle;
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};
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class AggImage : public CanvasItem
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{
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public:
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AggImage(AggCanvas *c, SVGImageElementImpl *image);
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virtual ~AggImage();
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virtual TQRect bbox() const;
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virtual bool fillContains(const TQPoint &) { return true; }
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virtual bool strokeContains(const TQPoint &) { return true; }
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virtual void update(CanvasItemUpdate, int = 0, int = 0) { }
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virtual void init();
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virtual void draw();
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virtual bool isVisible();
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virtual SVGElementImpl *element() const { return m_image; }
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protected:
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AggCanvas *m_canvas;
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SVGImageElementImpl *m_image;
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};
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class AggText : public CanvasText
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{
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public:
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AggText(AggCanvas *c, SVGTextElementImpl *text);
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virtual ~AggText();
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virtual TQRect bbox() const;
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virtual bool fillContains(const TQPoint &p);
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virtual bool strokeContains(const TQPoint &p);
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virtual void update(CanvasItemUpdate, int param1 = 0, int param2 = 0);
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virtual void draw();
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virtual bool isVisible();
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virtual void init();
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virtual void init(const SVGMatrixImpl *screenCTM);
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virtual void renderCallback(SVGTextContentElementImpl *element, const SVGMatrixImpl *screenCTM, T2P::GlyphSet *glyph, T2P::GlyphLayoutParams *params, double anchor) const;
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virtual void addTextDecoration(SVGTextContentElementImpl *element, double x, double y, double w, double h) const;
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unsigned operator [](unsigned) const { return 0; }
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protected:
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AggCanvas *m_canvas;
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private:
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void clearCurved();
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class SVPElement
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{
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public:
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SVPElement() { svp = 0; element = 0; fillPainter = 0; strokePainter = 0; }
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~SVPElement();
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BezierPathAggStroked *svp;
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SVGTextContentElementImpl *element;
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AggFillPaintServer *fillPainter;
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AggStrokePaintServer *strokePainter;
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};
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mutable TQPtrList<SVPElement> m_drawItems;
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};
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};
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#endif
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// vim:ts=4:noet
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