1 /*
2 * Copyright (C) 2004, 2005, 2006, 2007 Nikolas Zimmermann <zimmermann@kde.org>
3 * Copyright (C) 2004, 2005 Rob Buis <buis@kde.org>
4 * Copyright (C) 2005 Eric Seidel <eric@webkit.org>
5 * Copyright (C) 2010 Dirk Schulze <krit@webkit.org>
6 *
7 * This library is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Library General Public
9 * License as published by the Free Software Foundation; either
10 * version 2 of the License, or (at your option) any later version.
11 *
12 * This library is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Library General Public License for more details.
16 *
17 * You should have received a copy of the GNU Library General Public License
18 * along with this library; see the file COPYING.LIB. If not, write to
19 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
20 * Boston, MA 02110-1301, USA.
21 */
22
23 #include "config.h"
24
25 #if ENABLE(SVG) && ENABLE(FILTERS)
26 #include "SVGFEImage.h"
27
28 #include "AffineTransform.h"
29 #include "Filter.h"
30 #include "GraphicsContext.h"
31 #include "RenderTreeAsText.h"
32 #include "SVGPreserveAspectRatio.h"
33 #include "TextStream.h"
34
35 namespace WebCore {
36
FEImage(Filter * filter,RefPtr<Image> image,const SVGPreserveAspectRatio & preserveAspectRatio)37 FEImage::FEImage(Filter* filter, RefPtr<Image> image, const SVGPreserveAspectRatio& preserveAspectRatio)
38 : FilterEffect(filter)
39 , m_image(image)
40 , m_preserveAspectRatio(preserveAspectRatio)
41 {
42 }
43
create(Filter * filter,RefPtr<Image> image,const SVGPreserveAspectRatio & preserveAspectRatio)44 PassRefPtr<FEImage> FEImage::create(Filter* filter, RefPtr<Image> image, const SVGPreserveAspectRatio& preserveAspectRatio)
45 {
46 return adoptRef(new FEImage(filter, image, preserveAspectRatio));
47 }
48
determineAbsolutePaintRect()49 void FEImage::determineAbsolutePaintRect()
50 {
51 ASSERT(m_image);
52 FloatRect srcRect(FloatPoint(), m_image->size());
53 FloatRect paintRect(m_absoluteSubregion);
54 m_preserveAspectRatio.transformRect(paintRect, srcRect);
55 paintRect.intersect(maxEffectRect());
56 setAbsolutePaintRect(enclosingIntRect(paintRect));
57 }
58
apply()59 void FEImage::apply()
60 {
61 if (!m_image.get() || hasResult())
62 return;
63
64 ImageBuffer* resultImage = createImageBufferResult();
65 if (!resultImage)
66 return;
67
68 FloatRect srcRect(FloatPoint(), m_image->size());
69 FloatRect destRect(m_absoluteSubregion);
70 m_preserveAspectRatio.transformRect(destRect, srcRect);
71
72 IntPoint paintLocation = absolutePaintRect().location();
73 destRect.move(-paintLocation.x(), -paintLocation.y());
74
75 resultImage->context()->drawImage(m_image.get(), ColorSpaceDeviceRGB, destRect, srcRect);
76 }
77
dump()78 void FEImage::dump()
79 {
80 }
81
externalRepresentation(TextStream & ts,int indent) const82 TextStream& FEImage::externalRepresentation(TextStream& ts, int indent) const
83 {
84 ASSERT(m_image);
85 IntSize imageSize = m_image->size();
86 writeIndent(ts, indent);
87 ts << "[feImage";
88 FilterEffect::externalRepresentation(ts);
89 ts << " image-size=\"" << imageSize.width() << "x" << imageSize.height() << "\"]\n";
90 // FIXME: should this dump also object returned by SVGFEImage::image() ?
91 return ts;
92 }
93
94 } // namespace WebCore
95
96 #endif // ENABLE(SVG) && ENABLE(FILTERS)
97