summaryrefslogtreecommitdiffstats
path: root/ksvg/plugin/backends/agg/AggCanvasItems.h
blob: 7612b2348951b50af141ace7e741022f6d662e9f (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
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 TQString &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 TQString &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 TQString &);

		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 *tqshape);

	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 *tqshape);

	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 TQRect bbox() const;
		virtual bool fillContains(const TQPoint &p);
		virtual bool strokeContains(const TQPoint &p);
		virtual void update(CanvasItemUpdate reason, int param1 = 0, int param2 = 0);
		void draw(SVGShapeImpl *tqshape);
		void calcSVPs(const SVGMatrixImpl *matrix);
		virtual void init();
		virtual void init(const SVGMatrixImpl *);
		bool isVisible(SVGShapeImpl *tqshape);

		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;
		TQRect				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 TQRect bbox() const { return TQRect(); }
		virtual bool fillContains(const TQPoint &) { return true; }
		virtual bool strokeContains(const TQPoint &) { 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 TQRect bbox() const;
		virtual bool fillContains(const TQPoint &) { return true; }
		virtual bool strokeContains(const TQPoint &) { 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 TQRect bbox() const;
		virtual bool fillContains(const TQPoint &p);
		virtual bool strokeContains(const TQPoint &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 TQPtrList<SVPElement> m_drawItems;
	};
};

#endif

// vim:ts=4:noet