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/*
Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies)
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"
#include "TextureMapperImageBuffer.h"
#include "FilterEffectRenderer.h"
#if PLATFORM(QT)
#include "NativeImageQt.h"
#endif
#if USE(TEXTURE_MAPPER)
namespace WebCore {
void BitmapTextureImageBuffer::updateContents(const void* data, const IntRect& targetRect, const IntPoint& sourceOffset, int bytesPerLine)
{
#if PLATFORM(QT)
QImage image(reinterpret_cast<const uchar*>(data), targetRect.width(), targetRect.height(), bytesPerLine, NativeImageQt::defaultFormatForAlphaEnabledImages());
QPainter* painter = m_image->context()->platformContext();
painter->save();
painter->setCompositionMode(QPainter::CompositionMode_Source);
painter->drawImage(targetRect, image, IntRect(sourceOffset, targetRect.size()));
painter->restore();
#elif PLATFORM(CAIRO)
RefPtr<cairo_surface_t> surface = adoptRef(cairo_image_surface_create_for_data(static_cast<unsigned char*>(data()),
CAIRO_FORMAT_ARGB32,
targetRect.width(), targetRect.height(),
bytesPerLine));
m_image->context()->platformContext()->drawSurfaceToContext(surface.get(), targetRect,
IntRect(sourceOffset, targetRect.size()), m_image->context());
#endif
}
void BitmapTextureImageBuffer::didReset()
{
m_image = ImageBuffer::create(contentSize());
}
void BitmapTextureImageBuffer::updateContents(Image* image, const IntRect& targetRect, const IntPoint& offset)
{
m_image->context()->drawImage(image, ColorSpaceDeviceRGB, targetRect, IntRect(offset, targetRect.size()), CompositeCopy);
}
void TextureMapperImageBuffer::beginClip(const TransformationMatrix& matrix, const FloatRect& rect)
{
GraphicsContext* context = currentContext();
if (!context)
return;
#if ENABLE(3D_RENDERING)
TransformationMatrix previousTransform = context->get3DTransform();
#else
AffineTransform previousTransform = context->getCTM();
#endif
context->save();
#if ENABLE(3D_RENDERING)
context->concat3DTransform(matrix);
#else
context->concatCTM(matrix.toAffineTransform());
#endif
context->clip(rect);
#if ENABLE(3D_RENDERING)
context->set3DTransform(previousTransform);
#else
context->setCTM(previousTransform);
#endif
}
void TextureMapperImageBuffer::drawTexture(const BitmapTexture& texture, const FloatRect& targetRect, const TransformationMatrix& matrix, float opacity, const BitmapTexture* maskTexture, unsigned /* exposedEdges */)
{
GraphicsContext* context = currentContext();
if (!context)
return;
const BitmapTextureImageBuffer& textureImageBuffer = static_cast<const BitmapTextureImageBuffer&>(texture);
ImageBuffer* image = textureImageBuffer.m_image.get();
OwnPtr<ImageBuffer> maskedImage;
if (maskTexture && maskTexture->isValid()) {
const BitmapTextureImageBuffer* mask = static_cast<const BitmapTextureImageBuffer*>(maskTexture);
maskedImage = ImageBuffer::create(maskTexture->contentSize());
GraphicsContext* maskContext = maskedImage->context();
maskContext->drawImageBuffer(image, ColorSpaceDeviceRGB, IntPoint::zero(), CompositeCopy);
if (opacity < 1) {
maskContext->setAlpha(opacity);
opacity = 1;
}
maskContext->drawImageBuffer(mask->m_image.get(), ColorSpaceDeviceRGB, IntPoint::zero(), CompositeDestinationIn);
image = maskedImage.get();
}
context->save();
context->setAlpha(opacity);
#if ENABLE(3D_RENDERING)
context->concat3DTransform(matrix);
#else
context->concatCTM(matrix.toAffineTransform());
#endif
context->drawImageBuffer(image, ColorSpaceDeviceRGB, targetRect);
context->restore();
}
#if ENABLE(CSS_FILTERS)
PassRefPtr<BitmapTexture> BitmapTextureImageBuffer::applyFilters(TextureMapper*, const BitmapTexture& contentTexture, const FilterOperations& filters)
{
RefPtr<FilterEffectRenderer> renderer = FilterEffectRenderer::create();
renderer->setSourceImageRect(FloatRect(FloatPoint::zero(), contentTexture.size()));
// The document parameter is only needed for CSS shaders.
renderer->build(0 /*document */, filters);
renderer->allocateBackingStoreIfNeeded();
GraphicsContext* context = renderer->inputContext();
context->drawImageBuffer(static_cast<const BitmapTextureImageBuffer&>(contentTexture).m_image.get(), ColorSpaceDeviceRGB, IntPoint::zero());
renderer->apply();
m_image->context()->drawImageBuffer(renderer->output(), ColorSpaceDeviceRGB, renderer->outputRect());
return this;
}
#endif
}
#endif
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