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/*
* Copyright (C) Research In Motion Limited 2009-2010. All rights reserved.
*
* 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 "Image.h"
#include "AffineTransform.h"
#include "BitmapImage.h"
#include "FloatRect.h"
#include "GraphicsContext.h"
#include "ImageDecoder.h"
#include "ImageObserver.h"
#include "IntSize.h"
#include "NotImplemented.h"
#include "PainterOpenVG.h"
#include "SurfaceOpenVG.h"
#include "TiledImageOpenVG.h"
#include "VGUtils.h"
#include <wtf/MathExtras.h>
namespace WebCore {
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(TiledImageOpenVG* tiledImage, ImageObserver* observer)
: Image(observer)
, m_size(tiledImage->size())
, m_currentFrame(0)
, m_frames(1)
, m_frameTimer(0)
, m_repetitionCount(cAnimationNone)
, m_repetitionCountStatus(Unknown)
, m_repetitionsComplete(0)
, m_desiredFrameStartTime(0)
, m_isSolidColor(false)
, m_checkedForSolidColor(false)
, m_animationFinished(false)
, m_allDataReceived(false)
, m_haveSize(true)
, m_sizeAvailable(true)
, m_hasUniformFrameSize(true)
, m_haveFrameCount(true)
, m_frameCount(1)
{
initPlatformData();
ASSERT(m_size.width() > 0);
ASSERT(m_size.height() > 0);
m_decodedSize = m_size.width() * m_size.height() * 4;
m_frames[0].m_frame = tiledImage;
m_frames[0].m_hasAlpha = true;
m_frames[0].m_isComplete = true;
m_frames[0].m_haveMetadata = true;
checkForSolidColor();
}
void BitmapImage::checkForSolidColor()
{
TiledImageOpenVG* tiledImage = 0;
if (m_frameCount == 1 && m_size.width() == 1 && m_size.height() == 1)
tiledImage = nativeImageForCurrentFrame();
if (tiledImage) {
m_isSolidColor = true;
RGBA32 pixel;
vgGetImageSubData(tiledImage->tile(0, 0), &pixel, 0, VG_sARGB_8888, 0, 0, 1, 1);
ASSERT_VG_NO_ERROR();
m_solidColor.setRGB(pixel);
} else
m_isSolidColor = false;
m_checkedForSolidColor = true;
}
void BitmapImage::initPlatformData()
{
}
void BitmapImage::invalidatePlatformData()
{
}
#if ENABLE(IMAGE_DECODER_DOWN_SAMPLING)
static void adjustSourceRectForDownSampling(FloatRect& srcRect, const IntSize& origSize, const IntSize& scaledSize)
{
// We assume down-sampling zoom rates in X direction and in Y direction are same.
if (origSize.width() == scaledSize.width())
return;
// Image has been down sampled.
double rate = static_cast<double>(scaledSize.width()) / origSize.width();
double temp = srcRect.right() * rate;
srcRect.setX(srcRect.x() * rate);
srcRect.setWidth(temp - srcRect.x());
temp = srcRect.bottom() * rate;
srcRect.setY(srcRect.y() * rate);
srcRect.setHeight(temp - srcRect.y());
}
#endif
void BitmapImage::draw(GraphicsContext* context, const FloatRect& dst, const FloatRect& src, ColorSpace styleColorSpace, CompositeOperator op)
{
if (dst.isEmpty() || src.isEmpty())
return;
NativeImagePtr image = nativeImageForCurrentFrame();
if (!image)
return;
startAnimation();
if (mayFillWithSolidColor()) {
fillWithSolidColor(context, dst, solidColor(), styleColorSpace, op);
return;
}
context->save();
// Set the compositing operation.
if (op == CompositeSourceOver && !frameHasAlphaAtIndex(m_currentFrame))
context->setCompositeOperation(CompositeCopy);
else
context->setCompositeOperation(op);
FloatRect srcRectLocal(src);
#if ENABLE(IMAGE_DECODER_DOWN_SAMPLING)
adjustSourceRectForDownSampling(srcRectLocal, size(), image->size());
#endif
context->platformContext()->activePainter()->drawImage(image, dst, srcRectLocal);
context->restore();
if (imageObserver())
imageObserver()->didDraw(this);
}
void Image::drawPattern(GraphicsContext* context, const FloatRect& src,
const AffineTransform& patternTransformation,
const FloatPoint& phase, ColorSpace styleColorSpace,
CompositeOperator op, const FloatRect& dst)
{
if (dst.isEmpty() || src.isEmpty())
return;
NativeImagePtr image = nativeImageForCurrentFrame();
if (!image)
return;
startAnimation();
if (mayFillWithSolidColor()) {
fillWithSolidColor(context, dst, solidColor(), styleColorSpace, op);
return;
}
notImplemented();
if (imageObserver())
imageObserver()->didDraw(this);
}
PassRefPtr<Image> Image::loadPlatformResource(char const* name)
{
notImplemented();
return 0;
}
}
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