1 files changed, 105 insertions, 0 deletions
diff --git a/Source/WebCore/platform/graphics/filters/FETile.cpp b/Source/WebCore/platform/graphics/filters/FETile.cpp
new file mode 100644
index 000000000..a6e1da334
--- /dev/null
+++ b/Source/WebCore/platform/graphics/filters/FETile.cpp
@@ -0,0 +1,105 @@
+/*
+ * Copyright (C) 2008 Alex Mathews <possessedpenguinbob@gmail.com>
+ * 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(FILTERS)
+#include "FETile.h"
+
+#include "AffineTransform.h"
+#include "Filter.h"
+#include "GraphicsContext.h"
+#include "Pattern.h"
+#include "RenderTreeAsText.h"
+#include "SVGImageBufferTools.h"
+#include "TextStream.h"
+
+namespace WebCore {
+
+FETile::FETile(Filter* filter)
+    : FilterEffect(filter)
+{
+}
+
+PassRefPtr<FETile> FETile::create(Filter* filter)
+{
+    return adoptRef(new FETile(filter));
+}
+
+void FETile::platformApplySoftware()
+{
+// FIXME: See bug 47315. This is a hack to work around a compile failure, but is incorrect behavior otherwise.
+#if ENABLE(SVG)
+    FilterEffect* in = inputEffect(0);
+
+    ImageBuffer* resultImage = createImageBufferResult();
+    if (!resultImage)
+        return;
+
+    setIsAlphaImage(in->isAlphaImage());
+
+    // Source input needs more attention. It has the size of the filterRegion but gives the
+    // size of the cutted sourceImage back. This is part of the specification and optimization.
+    FloatRect tileRect = in->maxEffectRect();
+    FloatPoint inMaxEffectLocation = tileRect.location();
+    FloatPoint maxEffectLocation = maxEffectRect().location();
+    if (in->filterEffectType() == FilterEffectTypeSourceInput) {
+        Filter* filter = this->filter();
+        tileRect = filter->filterRegion();
+        tileRect.scale(filter->filterResolution().width(), filter->filterResolution().height());
+    }
+
+    OwnPtr<ImageBuffer> tileImage;
+    if (!SVGImageBufferTools::createImageBuffer(tileRect, tileRect, tileImage, ColorSpaceDeviceRGB, filter()->renderingMode()))
+        return;
+
+    GraphicsContext* tileImageContext = tileImage->context();
+    tileImageContext->translate(-inMaxEffectLocation.x(), -inMaxEffectLocation.y());
+    tileImageContext->drawImageBuffer(in->asImageBuffer(), ColorSpaceDeviceRGB, in->absolutePaintRect().location());
+
+    RefPtr<Pattern> pattern = Pattern::create(tileImage->copyImage(CopyBackingStore), true, true);
+
+    AffineTransform patternTransform;
+    patternTransform.translate(inMaxEffectLocation.x() - maxEffectLocation.x(), inMaxEffectLocation.y() - maxEffectLocation.y());
+    pattern->setPatternSpaceTransform(patternTransform);
+    GraphicsContext* filterContext = resultImage->context();
+    filterContext->setFillPattern(pattern);
+    filterContext->fillRect(FloatRect(FloatPoint(), absolutePaintRect().size()));
+#endif
+}
+
+void FETile::dump()
+{
+}
+
+TextStream& FETile::externalRepresentation(TextStream& ts, int indent) const
+{
+    writeIndent(ts, indent);
+    ts << "[feTile";
+    FilterEffect::externalRepresentation(ts);
+    ts << "]\n";
+    inputEffect(0)->externalRepresentation(ts, indent + 1);
+
+    return ts;
+}
+
+} // namespace WebCore
+
+#endif // ENABLE(FILTERS)