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/*
* Copyright (C) 2010, 2011, 2012, 2013 Research In Motion Limited. All rights reserved.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "config.h"
#include "Image.h"
#include "AffineTransform.h"
#include "BitmapImage.h"
#include "FloatConversion.h"
#include "FloatRect.h"
#include "GraphicsContext.h"
#include "ImageBuffer.h"
#include "ImageDecoder.h"
#include "ImageObserver.h"
#include "IntSize.h"
#include "NotImplemented.h"
#include "SharedBuffer.h"
#include <BlackBerryPlatformGraphicsContext.h>
#include <BlackBerryPlatformResourceStore.h>
#include <wtf/MathExtras.h>
using BlackBerry::Platform::ResourceData;
using BlackBerry::Platform::ResourceStore;
namespace WebCore {
PassRefPtr<Image> Image::loadPlatformResource(const char *name)
{
ResourceData data = ResourceStore::instance()->requestResource(BlackBerry::Platform::String::fromUtf8(name));
if (!data.data())
return BitmapImage::nullImage();
RefPtr<SharedBuffer> buffer = SharedBuffer::create(data.data(), data.len());
if (!buffer)
return BitmapImage::nullImage();
RefPtr<BitmapImage> img = BitmapImage::create();
img->setData(buffer.release(), true /* allDataReceived */);
return img.release();
}
PassNativeImagePtr ImageFrame::asNewNativeImage() const
{
return new BlackBerry::Platform::Graphics::TiledImage(m_size, m_bytes);
}
bool FrameData::clear(bool clearMetadata)
{
if (clearMetadata)
m_haveMetadata = false;
if (m_frame) {
delete m_frame;
m_frame = 0;
return true;
}
return false;
}
BitmapImage::BitmapImage(PassNativeImagePtr nativeImage, ImageObserver* observer)
: Image(observer)
, m_currentFrame(0)
, m_frames(0)
, m_frameTimer(0)
, m_repetitionCount(cAnimationNone)
, m_repetitionCountStatus(Unknown)
, m_repetitionsComplete(0)
, m_decodedSize(0)
, m_frameCount(1)
, m_isSolidColor(false)
, m_checkedForSolidColor(false)
, m_animationFinished(true)
, m_allDataReceived(true)
, m_haveSize(true)
, m_sizeAvailable(true)
, m_haveFrameCount(true)
{
int width = nativeImage->size().width();
int height = nativeImage->size().height();
m_decodedSize = width * height * 4;
m_size = IntSize(width, height);
m_frames.grow(1);
m_frames[0].m_frame = nativeImage;
m_frames[0].m_hasAlpha = nativeImage->hasAlpha();
m_frames[0].m_haveMetadata = true;
checkForSolidColor();
}
void BitmapImage::checkForSolidColor()
{
m_isSolidColor = size().width() == 1 && size().height() == 1 && frameCount() == 1;
m_checkedForSolidColor = true;
if (m_isSolidColor) {
unsigned buffer;
NativeImagePtr image = nativeImageForCurrentFrame();
image->readPixels(&buffer, 1);
m_solidColor = Color(buffer);
}
}
void BitmapImage::invalidatePlatformData()
{
}
void BitmapImage::draw(GraphicsContext* context, const FloatRect& dstRect, const FloatRect& srcRect, ColorSpace styleColorSpace, CompositeOperator op, BlendMode blendMode)
{
draw(context, dstRect, srcRect, styleColorSpace, op, blendMode, DoNotRespectImageOrientation);
}
void BitmapImage::draw(GraphicsContext* context, const FloatRect& dstRect, const FloatRect& srcRect, ColorSpace, CompositeOperator op, BlendMode, RespectImageOrientationEnum shouldRespectImageOrientation)
{
startAnimation();
NativeImagePtr image = nativeImageForCurrentFrame();
if (!image)
return;
FloatRect normDstRect = dstRect.normalized();
FloatRect normSrcRect = srcRect.normalized();
if (normSrcRect.isEmpty() || normDstRect.isEmpty())
return; // Nothing to draw.
#if ENABLE(IMAGE_DECODER_DOWN_SAMPLING)
normSrcRect = adjustSourceRectForDownSampling(normSrcRect, image->size());
#endif
// use similar orientation code as ImageSkia
ImageOrientation orientation = DefaultImageOrientation;
if (shouldRespectImageOrientation == RespectImageOrientation)
orientation = frameOrientationAtIndex(m_currentFrame);
GraphicsContextStateSaver saveContext(*context, false);
if (orientation != DefaultImageOrientation) {
saveContext.save();
// ImageOrientation expects the origin to be at (0, 0)
context->translate(normDstRect.x(), normDstRect.y());
normDstRect.setLocation(FloatPoint());
context->concatCTM(orientation.transformFromDefault(normDstRect.size()));
if (orientation.usesWidthAsHeight()) {
// The destination rect will have its width and height already reversed for the orientation of
// the image, as it was needed for page layout, so we need to reverse it back here.
normDstRect = FloatRect(normDstRect.x(), normDstRect.y(), normDstRect.height(), normDstRect.width());
}
}
CompositeOperator oldOperator = context->compositeOperation();
context->setCompositeOperation(op);
context->platformContext()->addImage(normDstRect, normSrcRect, image);
context->setCompositeOperation(oldOperator);
if (ImageObserver* observer = imageObserver())
observer->didDraw(this);
}
void Image::drawPattern(GraphicsContext* context, const FloatRect& srcRect, const AffineTransform& patternTransformation, const FloatPoint& phase, ColorSpace, CompositeOperator op, const FloatRect& dstRect, BlendMode)
{
NativeImagePtr image = nativeImageForCurrentFrame();
if (!image)
return;
// patternTransformation contains the tile scale factor relative to
// document coordinates. phase is given in document coordinates and
// corresponds to a texture drawn with src starting at (0, 0).
// Thus, dstRect starts at phase + patternTransformation.mapPoint(srcRect.location()).
AffineTransform srcTransform;
srcTransform.translate(phase.x(), phase.y());
srcTransform.multiply(patternTransformation);
#if ENABLE(IMAGE_DECODER_DOWN_SAMPLING)
FloatRect srcRectLocal(srcRect);
const IntSize unscaledSize = size();
const IntSize scaledSize = image->size();
if (unscaledSize != scaledSize) {
srcRectLocal = adjustSourceRectForDownSampling(srcRect, scaledSize);
// If the image has been down sampled, the transformation should take the scale into account.
float xscale = static_cast<float>(unscaledSize.width()) / scaledSize.width();
float yscale = static_cast<float>(unscaledSize.height()) / scaledSize.height();
srcTransform.scaleNonUniform(xscale, yscale);
}
#else
FloatRect srcRectLocal(srcRect);
#endif
srcTransform.translate(srcRectLocal.x(), srcRectLocal.y());
double srcTransformArray[6] = {
srcTransform.a(), srcTransform.b(),
srcTransform.c(), srcTransform.d(),
srcTransform.e(), srcTransform.f()
};
CompositeOperator oldOperator = context->compositeOperation();
context->setCompositeOperation(op);
context->platformContext()->addPattern(dstRect, srcRectLocal, srcTransformArray, image);
context->setCompositeOperation(oldOperator);
}
} // namespace WebCore
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