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
|
/*
Copyright (C) Alex Mathews <possessedpenguinbob@gmail.com>
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.
*/
#include "config.h"
#if ENABLE(FILTERS)
#include "FilterEffect.h"
namespace WebCore {
FilterEffect::FilterEffect()
: m_hasX(false)
, m_hasY(false)
, m_hasWidth(false)
, m_hasHeight(false)
, m_alphaImage(false)
{
}
FilterEffect::~FilterEffect()
{
}
FloatRect FilterEffect::calculateUnionOfChildEffectSubregions(Filter* filter, FilterEffect* in)
{
return in->calculateEffectRect(filter);
}
FloatRect FilterEffect::calculateUnionOfChildEffectSubregions(Filter* filter, FilterEffect* in, FilterEffect* in2)
{
FloatRect uniteEffectRect = in->calculateEffectRect(filter);
uniteEffectRect.unite(in2->calculateEffectRect(filter));
return uniteEffectRect;
}
FloatRect FilterEffect::calculateEffectRect(Filter* filter)
{
setUnionOfChildEffectSubregions(uniteChildEffectSubregions(filter));
filter->calculateEffectSubRegion(this);
return subRegion();
}
IntRect FilterEffect::calculateDrawingIntRect(const FloatRect& effectRect)
{
IntPoint location = roundedIntPoint(FloatPoint(subRegion().x() - effectRect.x(),
subRegion().y() - effectRect.y()));
return IntRect(location, resultImage()->size());
}
FloatRect FilterEffect::calculateDrawingRect(const FloatRect& srcRect)
{
FloatPoint startPoint = FloatPoint(srcRect.x() - subRegion().x(), srcRect.y() - subRegion().y());
FloatRect drawingRect = FloatRect(startPoint, srcRect.size());
return drawingRect;
}
GraphicsContext* FilterEffect::getEffectContext()
{
IntRect bufferRect = enclosingIntRect(subRegion());
m_effectBuffer = ImageBuffer::create(bufferRect.size(), LinearRGB);
return m_effectBuffer->context();
}
TextStream& FilterEffect::externalRepresentation(TextStream& ts) const
{
return ts;
}
} // namespace WebCore
#endif // ENABLE(FILTERS)
|
