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
|
/*
* Copyright (C) 2004, 2005, 2006, 2007 Nikolas Zimmermann <zimmermann@kde.org>
* Copyright (C) 2004, 2005 Rob Buis <buis@kde.org>
* Copyright (C) 2005 Eric Seidel <eric@webkit.org>
* Copyright (C) 2009 Dirk Schulze <krit@webkit.org>
*
* 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.
*/
#include "config.h"
#if ENABLE(SVG) && ENABLE(FILTERS)
#include "SVGFEOffset.h"
#include "Filter.h"
#include "GraphicsContext.h"
#include "SVGRenderTreeAsText.h"
namespace WebCore {
FEOffset::FEOffset(float dx, float dy)
: FilterEffect()
, m_dx(dx)
, m_dy(dy)
{
}
PassRefPtr<FEOffset> FEOffset::create(float dx, float dy)
{
return adoptRef(new FEOffset(dx, dy));
}
float FEOffset::dx() const
{
return m_dx;
}
void FEOffset::setDx(float dx)
{
m_dx = dx;
}
float FEOffset::dy() const
{
return m_dy;
}
void FEOffset::setDy(float dy)
{
m_dy = dy;
}
void FEOffset::apply(Filter* filter)
{
FilterEffect* in = inputEffect(0);
in->apply(filter);
if (!in->resultImage())
return;
GraphicsContext* filterContext = getEffectContext();
if (!filterContext)
return;
setIsAlphaImage(in->isAlphaImage());
FloatRect sourceImageRect = filter->sourceImageRect();
sourceImageRect.scale(filter->filterResolution().width(), filter->filterResolution().height());
if (filter->effectBoundingBoxMode()) {
m_dx *= sourceImageRect.width();
m_dy *= sourceImageRect.height();
}
m_dx *= filter->filterResolution().width();
m_dy *= filter->filterResolution().height();
FloatRect dstRect = FloatRect(m_dx + in->repaintRectInLocalCoordinates().x() - repaintRectInLocalCoordinates().x(),
m_dy + in->repaintRectInLocalCoordinates().y() - repaintRectInLocalCoordinates().y(),
in->repaintRectInLocalCoordinates().width(),
in->repaintRectInLocalCoordinates().height());
filterContext->drawImageBuffer(in->resultImage(), DeviceColorSpace, dstRect);
}
void FEOffset::dump()
{
}
TextStream& FEOffset::externalRepresentation(TextStream& ts, int indent) const
{
writeIndent(ts, indent);
ts << "[feOffset";
FilterEffect::externalRepresentation(ts);
ts << " dx=\"" << dx() << "\" dy=\"" << dy() << "\"]\n";
inputEffect(0)->externalRepresentation(ts, indent + 1);
return ts;
}
} // namespace WebCore
#endif // ENABLE(SVG) && ENABLE(FILTERS)
|
