GeneratorGeneratedImage.cpp [plain text]
#include "config.h"
#include "GeneratorGeneratedImage.h"
#include "FloatRect.h"
#include "GraphicsContext.h"
#include "ImageBuffer.h"
#include "Length.h"
namespace WebCore {
void GeneratorGeneratedImage::draw(GraphicsContext* destContext, const FloatRect& destRect, const FloatRect& srcRect, ColorSpace, CompositeOperator compositeOp)
{
GraphicsContextStateSaver stateSaver(*destContext);
destContext->setCompositeOperation(compositeOp);
destContext->clip(destRect);
destContext->translate(destRect.x(), destRect.y());
if (destRect.size() != srcRect.size())
destContext->scale(FloatSize(destRect.width() / srcRect.width(), destRect.height() / srcRect.height()));
destContext->translate(-srcRect.x(), -srcRect.y());
destContext->fillRect(FloatRect(FloatPoint(), m_size), *m_generator.get());
}
void GeneratorGeneratedImage::drawPattern(GraphicsContext* destContext, const FloatRect& srcRect, const AffineTransform& patternTransform,
const FloatPoint& phase, ColorSpace styleColorSpace, CompositeOperator compositeOp, const FloatRect& destRect)
{
IntSize adjustedSize = m_size;
FloatRect adjustedSrcRect = srcRect;
m_generator->adjustParametersForTiledDrawing(adjustedSize, adjustedSrcRect);
AffineTransform destContextCTM = destContext->getCTM();
double xScale = fabs(destContextCTM.xScale());
double yScale = fabs(destContextCTM.yScale());
AffineTransform adjustedPatternCTM = patternTransform;
adjustedPatternCTM.scale(1.0 / xScale, 1.0 / yScale);
adjustedSrcRect.scale(xScale, yScale);
OwnPtr<ImageBuffer> imageBuffer = destContext->createCompatibleBuffer(adjustedSize);
if (!imageBuffer)
return;
GraphicsContext* graphicsContext = imageBuffer->context();
graphicsContext->fillRect(FloatRect(FloatPoint(), adjustedSize), *m_generator.get());
imageBuffer->drawPattern(destContext, adjustedSrcRect, adjustedPatternCTM, phase, styleColorSpace, compositeOp, destRect);
}
void GeneratedImage::computeIntrinsicDimensions(Length& intrinsicWidth, Length& intrinsicHeight, FloatSize& intrinsicRatio)
{
Image::computeIntrinsicDimensions(intrinsicWidth, intrinsicHeight, intrinsicRatio);
intrinsicRatio = FloatSize();
}
}