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      1 /*
      2  * Copyright (C) 2009 Dirk Schulze <krit (at) webkit.org>
      3  *
      4  * This library is free software; you can redistribute it and/or
      5  * modify it under the terms of the GNU Library General Public
      6  * License as published by the Free Software Foundation; either
      7  * version 2 of the License, or (at your option) any later version.
      8  *
      9  * This library is distributed in the hope that it will be useful,
     10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
     11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
     12  * Library General Public License for more details.
     13  *
     14  * You should have received a copy of the GNU Library General Public License
     15  * along with this library; see the file COPYING.LIB.  If not, write to
     16  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
     17  * Boston, MA 02110-1301, USA.
     18  */
     19 
     20 #include "config.h"
     21 
     22 #if ENABLE(FILTERS)
     23 #include "SourceGraphic.h"
     24 
     25 #include "Filter.h"
     26 #include "GraphicsContext.h"
     27 #include "PlatformString.h"
     28 #include "RenderTreeAsText.h"
     29 #include "TextStream.h"
     30 
     31 #include <wtf/StdLibExtras.h>
     32 
     33 namespace WebCore {
     34 
     35 PassRefPtr<SourceGraphic> SourceGraphic::create(Filter* filter)
     36 {
     37     return adoptRef(new SourceGraphic(filter));
     38 }
     39 
     40 const AtomicString& SourceGraphic::effectName()
     41 {
     42     DEFINE_STATIC_LOCAL(const AtomicString, s_effectName, ("SourceGraphic"));
     43     return s_effectName;
     44 }
     45 
     46 void SourceGraphic::determineAbsolutePaintRect()
     47 {
     48     Filter* filter = this->filter();
     49     FloatRect paintRect = filter->sourceImageRect();
     50     paintRect.scale(filter->filterResolution().width(), filter->filterResolution().height());
     51     setAbsolutePaintRect(enclosingIntRect(paintRect));
     52 }
     53 
     54 void SourceGraphic::apply()
     55 {
     56     if (hasResult())
     57         return;
     58     ImageBuffer* resultImage = createImageBufferResult();
     59     Filter* filter = this->filter();
     60     if (!resultImage || !filter->sourceImage())
     61         return;
     62 
     63     resultImage->context()->drawImageBuffer(filter->sourceImage(), ColorSpaceDeviceRGB, IntPoint());
     64 }
     65 
     66 void SourceGraphic::dump()
     67 {
     68 }
     69 
     70 TextStream& SourceGraphic::externalRepresentation(TextStream& ts, int indent) const
     71 {
     72     writeIndent(ts, indent);
     73     ts << "[SourceGraphic]\n";
     74     return ts;
     75 }
     76 
     77 } // namespace WebCore
     78 
     79 #endif // ENABLE(FILTERS)
     80