--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/webengine/osswebengine/WebCore/loader/CachedImage.cpp Mon Mar 30 12:54:55 2009 +0300
@@ -0,0 +1,308 @@
+/*
+ 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 "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(DocLoader* docLoader, const String& url, bool forCache)
+ : CachedResource(url, ImageResource, forCache)
+{
+ m_image = 0;
+ m_status = Unknown;
+ if (!docLoader || docLoader->autoLoadImages()) {
+ m_loading = true;
+ cache()->loader()->load(docLoader, this, true);
+ } else
+ m_loading = false;
+}
+
+CachedImage::CachedImage(Image* image)
+ : CachedResource(String(), ImageResource, false /* not for cache */)
+{
+ m_image = image;
+ m_status = Cached;
+ m_loading = false;
+}
+
+CachedImage::~CachedImage()
+{
+ delete m_image;
+}
+
+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 Image* brokenImage;
+ if (!brokenImage)
+ brokenImage = Image::loadPlatformResource("missingImage");
+ return brokenImage;
+}
+
+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 (sizeAvailable || allDataReceived) {
+ if (m_image->isNull()) {
+ // FIXME: I'm not convinced this case can even be hit.
+ error();
+ 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();
+}
+
+void CachedImage::setMimeType(const String& mime_)
+{
+ m_response.setMimeType(mime_);
+}
+#endif
+
+} //namespace WebCore