/*
Copyright (C) 1998 Lars Knoll (knoll@mpi-hd.mpg.de)
Copyright (C) 2001 Dirk Mueller (mueller@kde.org)
Copyright (C) 2002 Waldo Bastian (bastian@kde.org)
Copyright (C) 2006 Samuel Weinig (sam.weinig@gmail.com)
Copyright (C) 2004, 2005, 2006, 2007 Apple Inc. 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 "CachedImage.h"
#include "StaticObjectsContainer.h"
#include "ResourceLoaderDelegate.h"
#include "httpcachemanager.h"
#include "BitmapImage.h"
#include "Cache.h"
#include "CachedResourceClient.h"
#include "CachedResourceClientWalker.h"
#include "DocLoader.h"
#include "Frame.h"
#include "Request.h"
#include "SystemTime.h"
#include <wtf/Vector.h>
#if PLATFORM(CG)
#include "PDFDocumentImage.h"
#endif
#if ENABLE(SVG_EXPERIMENTAL_FEATURES)
#if PLATFORM(MAC) || PLATFORM(QT)
#include "SVGImage.h"
#endif
#endif
using std::max;
namespace WebCore {
CachedImage::CachedImage(const String& url)
: CachedResource(url, ImageResource)
{
m_image = 0;
m_status = Unknown;
}
CachedImage::CachedImage(Image* image)
: CachedResource(String(), ImageResource)
{
m_image = image;
m_status = Cached;
m_loading = false;
}
CachedImage::~CachedImage()
{
delete m_image;
}
void CachedImage::load(DocLoader* docLoader)
{
if (!docLoader || docLoader->autoLoadImages())
CachedResource::load(docLoader, true, false, true);
else
m_loading = false;
}
void CachedImage::ref(CachedResourceClient* c)
{
CachedResource::ref(c);
if (!imageRect().isEmpty())
c->imageChanged(this);
if (!m_loading)
c->notifyFinished(this);
}
void CachedImage::allReferencesRemoved()
{
if (m_image && !m_errorOccurred)
m_image->resetAnimation();
}
static Image* brokenImage()
{
static OwnPtr<Image*> brokenImage;
if (!brokenImage) {
brokenImage.set(Image::loadPlatformResource("missingImage"));
}
Image* ret = brokenImage.get();
return ret;
}
static Image* nullImage()
{
static BitmapImage nullImage;
return &nullImage;
}
Image* CachedImage::image() const
{
if (m_errorOccurred)
return brokenImage();
if (m_image)
return m_image;
return nullImage();
}
IntSize CachedImage::imageSize() const
{
return (m_image ? m_image->size() : IntSize());
}
IntRect CachedImage::imageRect() const
{
return (m_image ? m_image->rect() : IntRect());
}
void CachedImage::notifyObservers()
{
CachedResourceClientWalker w(m_clients);
while (CachedResourceClient *c = w.next())
c->imageChanged(this);
}
void CachedImage::clear()
{
destroyDecodedData();
delete m_image;
m_image = 0;
setEncodedSize(0);
}
inline void CachedImage::createImage()
{
// Create the image if it doesn't yet exist.
if (m_image)
return;
#if PLATFORM(CG)
if (m_response.mimeType() == "application/pdf") {
m_image = new PDFDocumentImage;
return;
}
#endif
#if ENABLE(SVG_EXPERIMENTAL_FEATURES)
#if PLATFORM(MAC) || PLATFORM(QT)
if (m_response.mimeType() == "image/svg+xml") {
m_image = new SVGImage(this);
return;
}
#endif
#endif
m_image = new BitmapImage(this);
#if PLATFORM(SYMBIAN)
m_image->setMimeType(m_response.mimeType());
#endif
}
void CachedImage::data(PassRefPtr<SharedBuffer> data, bool allDataReceived)
{
m_data = data;
createImage();
bool sizeAvailable = false;
// Have the image update its data from its internal buffer.
// It will not do anything now, but will delay decoding until
// queried for info (like size or specific image frames).
sizeAvailable = m_image->setData(m_data, allDataReceived);
// Go ahead and tell our observers to try to draw if we have either
// received all the data or the size is known. Each chunk from the
// network causes observers to repaint, which will force that chunk
// to decode.
if (allDataReceived) {
if (!m_image || !sizeAvailable || m_image->isNull()) {
// This case is hit under OOM and lower layer is unable to set sizeAvailable = true
// even when allDataReceived is True.
error();
#if PLATFORM(SYMBIAN)
TBool found( EFalse );
CHttpCacheManager* cacheManager = WebCore::StaticObjectsContainer::instance()->resourceLoaderDelegate()->httpSessionManager()->cacheManager();
if ( cacheManager )
{
// call cache manager to check for url in cache
TPtrC ptr = url().des();
HBufC8* aUrl = HBufC8::New(ptr.Length());
if ( aUrl )
{
aUrl->Des().Copy(ptr);
found = cacheManager->Find( *aUrl );
if ( found )
{
cacheManager->RemoveL(*aUrl);
}
delete aUrl;
}
}
#endif
if (inCache())
cache()->remove(this);
return;
}
notifyObservers();
if (m_image)
setEncodedSize(m_image->data() ? m_image->data()->size() : 0);
}
if (allDataReceived) {
m_loading = false;
#if !PLATFORM(SYMBIAN)
checkNotify();
#endif
}
}
void CachedImage::error()
{
clear();
m_errorOccurred = true;
notifyObservers();
m_loading = false;
checkNotify();
}
void CachedImage::checkNotify()
{
if (m_loading)
return;
CachedResourceClientWalker w(m_clients);
while (CachedResourceClient* c = w.next())
c->notifyFinished(this);
}
void CachedImage::destroyDecodedData()
{
if (m_image && !m_errorOccurred)
m_image->destroyDecodedData();
}
void CachedImage::decodedSizeChanged(const Image* image, int delta)
{
if (image != m_image)
return;
setDecodedSize(decodedSize() + delta);
}
void CachedImage::didDraw(const Image* image)
{
if (image != m_image)
return;
double timeStamp = Frame::currentPaintTimeStamp();
if (!timeStamp) // If didDraw is called outside of a Frame paint.
timeStamp = currentTime();
CachedResource::didAccessDecodedData(timeStamp);
}
bool CachedImage::shouldPauseAnimation(const Image* image)
{
if (image != m_image)
return false;
CachedResourceClientWalker w(m_clients);
while (CachedResourceClient* c = w.next()) {
if (c->willRenderImage(this))
return false;
}
return true;
}
void CachedImage::animationAdvanced(const Image* image)
{
if (image == m_image)
notifyObservers();
}
#if PLATFORM(SYMBIAN)
void CachedImage::decoderError( int /*error*/ )
{
}
void CachedImage::partialImage()
{
notifyObservers();
}
void CachedImage::imageReady(int size_)
{
setDecodedSize(size_);
notifyObservers();
checkNotify();
}
void CachedImage::animationFrameReady(int size_)
{
setDecodedSize(size_);
notifyObservers();
checkNotify();
}
void CachedImage::setMimeType(const String& mime_)
{
m_response.setMimeType(mime_);
}
#endif
} //namespace WebCore