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/*
* 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)
{
GraphicsContextStateSaver stateSaver(*context);
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());
}
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);
}
}
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