示例#1
0
void ImageBuffer::putByteArray(Multiply multiplied, ByteArray* source, const IntSize& sourceSize, const IntRect& sourceRect, const IntPoint& destPoint)
{
    if (!m_context->isAcceleratedContext()) {
        m_data.putData(source, sourceSize, sourceRect, destPoint, internalSize(), m_context->isAcceleratedContext(), multiplied == Unmultiplied);
        return;
    }

#if USE(IOSURFACE_CANVAS_BACKING_STORE)
    // Make a copy of the source to ensure the bits don't change before being drawn
    IntSize sourceCopySize(sourceRect.width(), sourceRect.height());
    OwnPtr<ImageBuffer> sourceCopy = ImageBuffer::create(sourceCopySize, 1, ColorSpaceDeviceRGB, Unaccelerated);
    if (!sourceCopy)
        return;

    sourceCopy->m_data.putData(source, sourceSize, sourceRect, IntPoint(-sourceRect.x(), -sourceRect.y()), sourceCopy->internalSize(), sourceCopy->context()->isAcceleratedContext(), multiplied == Unmultiplied);

    // Set up context for using drawImage as a direct bit copy
    CGContextRef destContext = context()->platformContext();
    CGContextSaveGState(destContext);
    CGContextConcatCTM(destContext, AffineTransform(CGContextGetCTM(destContext)).inverse());
    wkCGContextResetClip(destContext);
    CGContextSetInterpolationQuality(destContext, kCGInterpolationNone);
    CGContextSetAlpha(destContext, 1.0);
    CGContextSetBlendMode(destContext, kCGBlendModeCopy);
    CGContextSetShadowWithColor(destContext, CGSizeZero, 0, 0);

    // Draw the image in CG coordinate space
    IntPoint destPointInCGCoords(destPoint.x() + sourceRect.x(), internalSize().height() - (destPoint.y()+sourceRect.y()) - sourceRect.height());
    IntRect destRectInCGCoords(destPointInCGCoords, sourceCopySize);
    RetainPtr<CGImageRef> sourceCopyImage(AdoptCF, sourceCopy->copyNativeImage());
    CGContextDrawImage(destContext, destRectInCGCoords, sourceCopyImage.get());
    CGContextRestoreGState(destContext);
#endif
}
示例#2
0
void ImageBuffer::putByteArray(Multiply multiplied, Uint8ClampedArray* source, const IntSize& sourceSize, const IntRect& sourceRect, const IntPoint& destPoint, CoordinateSystem coordinateSystem)
{
    if (!context().isAcceleratedContext()) {
        IntRect scaledSourceRect = sourceRect;
        IntSize scaledSourceSize = sourceSize;
        if (coordinateSystem == LogicalCoordinateSystem) {
            scaledSourceRect.scale(m_resolutionScale);
            scaledSourceSize.scale(m_resolutionScale);
        }

        m_data.putData(source, scaledSourceSize, scaledSourceRect, destPoint, internalSize(), false, multiplied == Unmultiplied, 1);
        return;
    }

#if USE(IOSURFACE_CANVAS_BACKING_STORE)
    // Make a copy of the source to ensure the bits don't change before being drawn
    IntSize sourceCopySize(sourceRect.width(), sourceRect.height());
    // FIXME (149431): Should this ImageBuffer be unconditionally unaccelerated? Making it match the context seems to break putData().
    std::unique_ptr<ImageBuffer> sourceCopy = ImageBuffer::create(sourceCopySize, Unaccelerated, 1, ColorSpaceDeviceRGB);
    if (!sourceCopy)
        return;

    sourceCopy->m_data.putData(source, sourceSize, sourceRect, IntPoint(-sourceRect.x(), -sourceRect.y()), sourceCopy->internalSize(), sourceCopy->context().isAcceleratedContext(), multiplied == Unmultiplied, 1);

    // Set up context for using drawImage as a direct bit copy
    CGContextRef destContext = context().platformContext();
    CGContextSaveGState(destContext);
    if (coordinateSystem == LogicalCoordinateSystem)
        CGContextConcatCTM(destContext, AffineTransform(wkGetUserToBaseCTM(destContext)).inverse());
    else
        CGContextConcatCTM(destContext, AffineTransform(CGContextGetCTM(destContext)).inverse());
    CGContextResetClip(destContext);
    CGContextSetInterpolationQuality(destContext, kCGInterpolationNone);
    CGContextSetAlpha(destContext, 1.0);
    CGContextSetBlendMode(destContext, kCGBlendModeCopy);
    CGContextSetShadowWithColor(destContext, CGSizeZero, 0, 0);

    // Draw the image in CG coordinate space
    FloatSize scaledDestSize = scaleSizeToUserSpace(coordinateSystem == LogicalCoordinateSystem ? logicalSize() : internalSize(), m_data.backingStoreSize, internalSize());
    IntPoint destPointInCGCoords(destPoint.x() + sourceRect.x(), scaledDestSize.height() - (destPoint.y() + sourceRect.y()) - sourceRect.height());
    IntRect destRectInCGCoords(destPointInCGCoords, sourceCopySize);
    CGContextClipToRect(destContext, destRectInCGCoords);

    RetainPtr<CGImageRef> sourceCopyImage = sourceCopy->copyNativeImage();
    FloatRect backingStoreInDestRect = FloatRect(FloatPoint(destPointInCGCoords.x(), destPointInCGCoords.y() + sourceCopySize.height() - (int)CGImageGetHeight(sourceCopyImage.get())), FloatSize(CGImageGetWidth(sourceCopyImage.get()), CGImageGetHeight(sourceCopyImage.get())));
    CGContextDrawImage(destContext, backingStoreInDestRect, sourceCopyImage.get());
    CGContextRestoreGState(destContext);
#endif
}