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 *
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Library General Public
8 * License as published by the Free Software Foundation; either
9 * version 2 of the License, or (at your option) any later version.
10 *
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
14 * Library General Public License for more details.
15 *
16 * You should have received a copy of the GNU Library General Public License
17 * along with this library; see the file COPYING.LIB.  If not, write to
18 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
19 * Boston, MA 02110-1301, USA.
20 */
21
22#include "config.h"
23
24#if ENABLE(FILTERS)
25#include "FEMerge.h"
26
27#include "Filter.h"
28#include "GraphicsContext.h"
29#include "TextStream.h"
30
31namespace WebCore {
32
33FEMerge::FEMerge(Filter* filter)
34    : FilterEffect(filter)
35{
36}
37
38PassRefPtr<FEMerge> FEMerge::create(Filter* filter)
39{
40    return adoptRef(new FEMerge(filter));
41}
42
43void FEMerge::platformApplySoftware()
44{
45    unsigned size = numberOfEffectInputs();
46    ASSERT(size > 0);
47
48    ImageBuffer* resultImage = createImageBufferResult();
49    if (!resultImage)
50        return;
51
52    GraphicsContext* filterContext = resultImage->context();
53    for (unsigned i = 0; i < size; ++i) {
54        FilterEffect* in = inputEffect(i);
55        filterContext->drawImageBuffer(in->asImageBuffer(), ColorSpaceDeviceRGB, drawingRegionOfInputImage(in->absolutePaintRect()));
56    }
57}
58
59void FEMerge::dump()
60{
61}
62
63TextStream& FEMerge::externalRepresentation(TextStream& ts, int indent) const
64{
65    writeIndent(ts, indent);
66    ts << "[feMerge";
67    FilterEffect::externalRepresentation(ts);
68    unsigned size = numberOfEffectInputs();
69    ASSERT(size > 0);
70    ts << " mergeNodes=\"" << size << "\"]\n";
71    for (unsigned i = 0; i < size; ++i)
72        inputEffect(i)->externalRepresentation(ts, indent + 1);
73    return ts;
74}
75
76} // namespace WebCore
77
78#endif // ENABLE(FILTERS)
79