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/*
* Copyright (C) 2004, 2005, 2006 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "config.h"
#include "BitmapImage.h"
#if USE(CG)
#include "FloatConversion.h"
#include "GraphicsContextCG.h"
#include "ImageObserver.h"
#include "SubimageCacheWithTimer.h"
#include <ApplicationServices/ApplicationServices.h>
#include <wtf/RetainPtr.h>
#if PLATFORM(MAC)
#include "WebCoreSystemInterface.h"
#endif
#if PLATFORM(WIN)
#include <WebKitSystemInterface/WebKitSystemInterface.h>
#endif
namespace WebCore {
bool FrameData::clear(bool clearMetadata)
{
if (clearMetadata)
m_haveMetadata = false;
m_orientation = DefaultImageOrientation;
if (m_frame) {
#if CACHE_SUBIMAGES
subimageCache().clearImage(m_frame);
#endif
CGImageRelease(m_frame);
m_frame = 0;
return true;
}
return false;
}
BitmapImage::BitmapImage(CGImageRef cgImage, 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_decodedPropertiesSize(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)
{
CGFloat width = CGImageGetWidth(cgImage);
CGFloat height = CGImageGetHeight(cgImage);
m_decodedSize = width * height * 4;
m_size = IntSize(width, height);
// Since we don't have a decoder, we can't figure out the image orientation.
// Set m_sizeRespectingOrientation to be the same as m_size so it's not 0x0.
m_sizeRespectingOrientation = IntSize(width, height);
m_frames.grow(1);
m_frames[0].m_frame = cgImage;
m_frames[0].m_hasAlpha = true;
m_frames[0].m_haveMetadata = true;
checkForSolidColor();
}
// Drawing Routines
void BitmapImage::checkForSolidColor()
{
m_checkedForSolidColor = true;
if (frameCount() > 1) {
m_isSolidColor = false;
return;
}
CGImageRef image = frameAtIndex(0);
// Currently we only check for solid color in the important special case of a 1x1 image.
if (image && CGImageGetWidth(image) == 1 && CGImageGetHeight(image) == 1) {
unsigned char pixel[4]; // RGBA
RetainPtr<CGContextRef> bmap = adoptCF(CGBitmapContextCreate(pixel, 1, 1, 8, sizeof(pixel), deviceRGBColorSpaceRef(),
kCGImageAlphaPremultipliedLast | kCGBitmapByteOrder32Big));
if (!bmap)
return;
GraphicsContext(bmap.get()).setCompositeOperation(CompositeCopy);
CGRect dst = { {0, 0}, {1, 1} };
CGContextDrawImage(bmap.get(), dst, image);
if (pixel[3] == 0)
m_solidColor = Color(0, 0, 0, 0);
else
m_solidColor = Color(pixel[0] * 255 / pixel[3], pixel[1] * 255 / pixel[3], pixel[2] * 255 / pixel[3], pixel[3]);
m_isSolidColor = true;
}
}
CGImageRef BitmapImage::getCGImageRef()
{
return frameAtIndex(0);
}
CGImageRef BitmapImage::getFirstCGImageRefOfSize(const IntSize& size)
{
size_t count = frameCount();
for (size_t i = 0; i < count; ++i) {
CGImageRef cgImage = frameAtIndex(i);
if (cgImage && IntSize(CGImageGetWidth(cgImage), CGImageGetHeight(cgImage)) == size)
return cgImage;
}
// Fallback to the default CGImageRef if we can't find the right size
return getCGImageRef();
}
RetainPtr<CFArrayRef> BitmapImage::getCGImageArray()
{
size_t count = frameCount();
if (!count)
return 0;
CFMutableArrayRef array = CFArrayCreateMutable(NULL, count, &kCFTypeArrayCallBacks);
for (size_t i = 0; i < count; ++i) {
if (CGImageRef currFrame = frameAtIndex(i))
CFArrayAppendValue(array, currFrame);
}
return adoptCF(array);
}
void BitmapImage::draw(GraphicsContext* ctx, const FloatRect& dstRect, const FloatRect& srcRect, ColorSpace styleColorSpace, CompositeOperator op, BlendMode blendMode)
{
draw(ctx, dstRect, srcRect, styleColorSpace, op, blendMode, DoNotRespectImageOrientation);
}
void BitmapImage::draw(GraphicsContext* ctxt, const FloatRect& destRect, const FloatRect& srcRect, ColorSpace styleColorSpace, CompositeOperator compositeOp, BlendMode blendMode, RespectImageOrientationEnum shouldRespectImageOrientation)
{
startAnimation();
CGImageRef image = frameAtIndex(m_currentFrame);
if (!image) // If it's too early we won't have an image yet.
return;
if (mayFillWithSolidColor()) {
fillWithSolidColor(ctxt, destRect, solidColor(), styleColorSpace, compositeOp);
return;
}
FloatSize selfSize = currentFrameSize();
ImageOrientation orientation = DefaultImageOrientation;
if (shouldRespectImageOrientation == RespectImageOrientation)
orientation = frameOrientationAtIndex(m_currentFrame);
ctxt->drawNativeImage(image, selfSize, styleColorSpace, destRect, srcRect, compositeOp, blendMode, orientation);
if (imageObserver())
imageObserver()->didDraw(this);
}
}
#endif // USE(CG)
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