1 files changed, 71 insertions, 0 deletions
diff --git a/Source/WebCore/platform/graphics/GeneratedImage.cpp b/Source/WebCore/platform/graphics/GeneratedImage.cpp
new file mode 100644
index 0000000..f2c175b
--- /dev/null
+++ b/Source/WebCore/platform/graphics/GeneratedImage.cpp
@@ -0,0 +1,71 @@
+/*
+ * Copyright (C) 2008, 2009, 2010 Apple Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
+ * THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "config.h"
+#include "GeneratedImage.h"
+
+#include "FloatRect.h"
+#include "GraphicsContext.h"
+#include "ImageBuffer.h"
+
+using namespace std;
+
+namespace WebCore {
+
+void GeneratedImage::draw(GraphicsContext* context, const FloatRect& dstRect, const FloatRect& srcRect, ColorSpace, CompositeOperator compositeOp)
+{
+    context->save();
+    context->setCompositeOperation(compositeOp);
+    context->clip(dstRect);
+    context->translate(dstRect.x(), dstRect.y());
+    if (dstRect.size() != srcRect.size())
+        context->scale(FloatSize(dstRect.width() / srcRect.width(), dstRect.height() / srcRect.height()));
+    context->translate(-srcRect.x(), -srcRect.y());
+    context->fillRect(FloatRect(FloatPoint(), m_size), *m_generator.get());
+    context->restore();
+}
+
+void GeneratedImage::drawPattern(GraphicsContext* context, const FloatRect& srcRect, const AffineTransform& patternTransform,
+                                 const FloatPoint& phase, ColorSpace styleColorSpace, CompositeOperator compositeOp, const FloatRect& destRect)
+{
+    // Allow the generator to provide visually-equivalent tiling parameters for better performance.
+    IntSize adjustedSize = m_size;
+    FloatRect adjustedSrcRect = srcRect;
+    m_generator->adjustParametersForTiledDrawing(adjustedSize, adjustedSrcRect);
+
+    // Create a BitmapImage and call drawPattern on it.
+    OwnPtr<ImageBuffer> imageBuffer = ImageBuffer::create(adjustedSize);
+    if (!imageBuffer)
+        return;
+
+    // Fill with the gradient.
+    GraphicsContext* graphicsContext = imageBuffer->context();
+    graphicsContext->fillRect(FloatRect(FloatPoint(), adjustedSize), *m_generator.get());
+
+    // Tile the image buffer into the context.
+    imageBuffer->drawPattern(context, adjustedSrcRect, patternTransform, phase, styleColorSpace, compositeOp, destRect);
+}
+
+}