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
|
/*
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
along 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 SVGMaskElementImpl_H
#define SVGMaskElementImpl_H
#include <qwmatrix.h>
#include "SVGTestsImpl.h"
#include "SVGBBoxTarget.h"
#include "SVGElementImpl.h"
#include "SVGStylableImpl.h"
#include "SVGLangSpaceImpl.h"
#include "SVGExternalResourcesRequiredImpl.h"
#include "LRUCache.h"
#include "ksvg_lookup.h"
namespace KSVG
{
class SVGUnitConverter;
class KSVGCanvas;
class SVGShapeImpl;
class SVGRectImpl;
class SVGAnimatedLengthImpl;
class SVGAnimatedEnumerationImpl;
class SVGMaskElementImpl : public SVGElementImpl,
public SVGTestsImpl,
public SVGLangSpaceImpl,
public SVGExternalResourcesRequiredImpl,
public SVGStylableImpl,
public SVGBBoxTarget
{
public:
class Mask
{
public:
Mask() : m_width(0), m_height(0) {}
Mask(const QByteArray& mask, const QWMatrix& screenToMask, int width, int height);
~Mask() {}
bool isEmpty() const { return m_width == 0; }
unsigned char value(int screenX, int screenY) const;
QByteArray rectangle(int screenX, int screenY, int width, int height);
QByteArray rectangle(const QRect& rect);
void setScreenToMask(const QWMatrix& matrix) { m_screenToMask = matrix; }
private:
int m_width;
int m_height;
QByteArray m_mask;
QWMatrix m_screenToMask;
};
SVGMaskElementImpl(DOM::ElementImpl *);
virtual ~SVGMaskElementImpl();
SVGAnimatedEnumerationImpl *maskUnits() const;
SVGAnimatedEnumerationImpl *maskContentUnits() const;
SVGAnimatedLengthImpl *x() const;
SVGAnimatedLengthImpl *y() const;
SVGAnimatedLengthImpl *width() const;
SVGAnimatedLengthImpl *height() const;
virtual SVGRectImpl *getBBox();
virtual void setAttributes();
SVGUnitConverter *converter() const { return m_converter; }
Mask createMask(SVGShapeImpl *referencingElement);
// Compute the mask on a given shape, taking into account all masks defined
// on the shape's ancestors. This is a workaround for us not having a buffer
// for container elements, so we can't mask containers directly.
static QByteArray maskRectangle(SVGShapeImpl *shape, const QRect& screenRectangle);
private:
class CacheKey
{
public:
CacheKey() : m_element(0), m_width(0), m_height(0) {}
CacheKey(SVGElementImpl *element, int width, int height) : m_element(element), m_width(width), m_height(height) {}
bool operator==(const CacheKey& other) const { return m_element == other.m_element && m_width == other.m_width && m_height == other.m_height; }
private:
SVGElementImpl *m_element;
int m_width;
int m_height;
};
Mask createMask(SVGShapeImpl *referencingElement, int imageWidth, int imageHeight);
SVGAnimatedEnumerationImpl *m_maskUnits;
SVGAnimatedEnumerationImpl *m_maskContentUnits;
SVGAnimatedLengthImpl *m_x;
SVGAnimatedLengthImpl *m_y;
SVGAnimatedLengthImpl *m_width;
SVGAnimatedLengthImpl *m_height;
SVGUnitConverter *m_converter;
KSVGCanvas *m_canvas;
MinOneLRUCache<CacheKey, Mask> m_maskCache;
public:
KSVG_GET
KSVG_PUT
KSVG_BRIDGE
enum
{
// Properties
MaskUnits, MaskContentUnits, X, Y, Width, Height
};
KJS::Value getValueProperty(KJS::ExecState *exec, int token) const;
void putValueProperty(KJS::ExecState *exec, int token, const KJS::Value &value, int attr);
};
KSVG_REGISTER_ELEMENT(SVGMaskElementImpl, "mask")
inline unsigned char SVGMaskElementImpl::Mask::value(int screenX, int screenY) const
{
int x, y;
m_screenToMask.map(screenX, screenY, &x, &y);
if(x >= 0 && x < m_width && y >= 0 && y < m_height)
return m_mask[x + y * m_width];
else
return 0;
}
}
#endif
// vim:ts=4:noet
|
