--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/WebCore/svg/graphics/SVGImage.cpp Fri Sep 17 09:02:29 2010 +0300
@@ -0,0 +1,289 @@
+/*
+ * Copyright (C) 2006 Eric Seidel (eric@webkit.org)
+ * Copyright (C) 2008, 2009 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"
+#if ENABLE(SVG)
+#include "SVGImage.h"
+
+#include "CachedPage.h"
+#include "DocumentLoader.h"
+#include "FileChooser.h"
+#include "FloatRect.h"
+#include "Frame.h"
+#include "FrameLoader.h"
+#include "FrameView.h"
+#include "GraphicsContext.h"
+#include "HTMLFormElement.h"
+#include "ImageBuffer.h"
+#include "ImageObserver.h"
+#include "Page.h"
+#include "RenderView.h"
+#include "ResourceError.h"
+#include "SVGDocument.h"
+#include "SVGLength.h"
+#include "SVGRenderSupport.h"
+#include "SVGSVGElement.h"
+#include "Settings.h"
+
+// Moving this #include above FrameLoader.h causes the Windows build to fail due to warnings about
+// alignment in Timer<FrameLoader>. It seems that the definition of EmptyFrameLoaderClient is what
+// causes this (removing that definition fixes the warnings), but it isn't clear why.
+#include "EmptyClients.h"
+
+namespace WebCore {
+
+class SVGImageChromeClient : public EmptyChromeClient, public Noncopyable {
+public:
+ SVGImageChromeClient(SVGImage* image)
+ : m_image(image)
+ {
+ }
+
+ SVGImage* image() const { return m_image; }
+
+private:
+ virtual void chromeDestroyed()
+ {
+ m_image = 0;
+ }
+
+ virtual void invalidateContentsAndWindow(const IntRect& r, bool)
+ {
+ if (m_image && m_image->imageObserver())
+ m_image->imageObserver()->changedInRect(m_image, r);
+ }
+
+ SVGImage* m_image;
+};
+
+SVGImage::SVGImage(ImageObserver* observer)
+ : Image(observer)
+{
+}
+
+SVGImage::~SVGImage()
+{
+ if (m_page) {
+ m_page->mainFrame()->loader()->frameDetached(); // Break both the loader and view references to the frame
+
+ // Clear explicitly because we want to delete the page before the ChromeClient.
+ // FIXME: I believe that's already guaranteed by C++ object destruction rules,
+ // so this may matter only for the assertion below.
+ m_page.clear();
+ }
+
+ // Verify that page teardown destroyed the Chrome
+ ASSERT(!m_chromeClient || !m_chromeClient->image());
+}
+
+void SVGImage::setContainerSize(const IntSize& containerSize)
+{
+ if (containerSize.isEmpty())
+ return;
+
+ if (!m_page)
+ return;
+ Frame* frame = m_page->mainFrame();
+ SVGSVGElement* rootElement = static_cast<SVGDocument*>(frame->document())->rootElement();
+ if (!rootElement)
+ return;
+
+ rootElement->setContainerSize(containerSize);
+}
+
+bool SVGImage::usesContainerSize() const
+{
+ if (!m_page)
+ return false;
+ Frame* frame = m_page->mainFrame();
+ SVGSVGElement* rootElement = static_cast<SVGDocument*>(frame->document())->rootElement();
+ if (!rootElement)
+ return false;
+
+ return rootElement->hasSetContainerSize();
+}
+
+IntSize SVGImage::size() const
+{
+ if (!m_page)
+ return IntSize();
+ Frame* frame = m_page->mainFrame();
+ SVGSVGElement* rootElement = static_cast<SVGDocument*>(frame->document())->rootElement();
+ if (!rootElement)
+ return IntSize();
+
+ SVGLength width = rootElement->width();
+ SVGLength height = rootElement->height();
+
+ IntSize svgSize;
+ if (width.unitType() == LengthTypePercentage)
+ svgSize.setWidth(rootElement->relativeWidthValue());
+ else
+ svgSize.setWidth(static_cast<int>(width.value(rootElement)));
+
+ if (height.unitType() == LengthTypePercentage)
+ svgSize.setHeight(rootElement->relativeHeightValue());
+ else
+ svgSize.setHeight(static_cast<int>(height.value(rootElement)));
+
+ return svgSize;
+}
+
+bool SVGImage::hasRelativeWidth() const
+{
+ if (!m_page)
+ return false;
+ SVGSVGElement* rootElement = static_cast<SVGDocument*>(m_page->mainFrame()->document())->rootElement();
+ if (!rootElement)
+ return false;
+
+ return rootElement->width().unitType() == LengthTypePercentage;
+}
+
+bool SVGImage::hasRelativeHeight() const
+{
+ if (!m_page)
+ return false;
+ SVGSVGElement* rootElement = static_cast<SVGDocument*>(m_page->mainFrame()->document())->rootElement();
+ if (!rootElement)
+ return false;
+
+ return rootElement->height().unitType() == LengthTypePercentage;
+}
+
+void SVGImage::draw(GraphicsContext* context, const FloatRect& dstRect, const FloatRect& srcRect, ColorSpace, CompositeOperator compositeOp)
+{
+ if (!m_page)
+ return;
+
+ FrameView* view = m_page->mainFrame()->view();
+
+ context->save();
+ context->setCompositeOperation(compositeOp);
+ context->clip(enclosingIntRect(dstRect));
+ if (compositeOp != CompositeSourceOver)
+ context->beginTransparencyLayer(1);
+
+ FloatSize scale(dstRect.width() / srcRect.width(), dstRect.height() / srcRect.height());
+
+ // We can only draw the entire frame, clipped to the rect we want. So compute where the top left
+ // of the image would be if we were drawing without clipping, and translate accordingly.
+ FloatSize topLeftOffset(srcRect.location().x() * scale.width(), srcRect.location().y() * scale.height());
+ FloatPoint destOffset = dstRect.location() - topLeftOffset;
+
+ context->translate(destOffset.x(), destOffset.y());
+ context->scale(scale);
+
+ view->resize(size());
+
+ if (view->needsLayout())
+ view->layout();
+
+ view->paint(context, IntRect(0, 0, view->width(), view->height()));
+
+ if (compositeOp != CompositeSourceOver)
+ context->endTransparencyLayer();
+
+ context->restore();
+
+ if (imageObserver())
+ imageObserver()->didDraw(this);
+}
+
+NativeImagePtr SVGImage::nativeImageForCurrentFrame()
+{
+ // FIXME: In order to support dynamic SVGs we need to have a way to invalidate this
+ // frame cache, or better yet, not use a cache for tiled drawing at all, instead
+ // having a tiled drawing callback (hopefully non-virtual).
+ if (!m_frameCache) {
+ if (!m_page)
+ return 0;
+ m_frameCache = ImageBuffer::create(size());
+ if (!m_frameCache) // failed to allocate image
+ return 0;
+ draw(m_frameCache->context(), rect(), rect(), DeviceColorSpace, CompositeSourceOver);
+ }
+ return m_frameCache->image()->nativeImageForCurrentFrame();
+}
+
+bool SVGImage::dataChanged(bool allDataReceived)
+{
+ // Don't do anything if is an empty image.
+ if (!data()->size())
+ return true;
+
+ if (allDataReceived) {
+ static FrameLoaderClient* dummyFrameLoaderClient = new EmptyFrameLoaderClient;
+ static EditorClient* dummyEditorClient = new EmptyEditorClient;
+#if ENABLE(CONTEXT_MENUS)
+ static ContextMenuClient* dummyContextMenuClient = new EmptyContextMenuClient;
+#else
+ static ContextMenuClient* dummyContextMenuClient = 0;
+#endif
+#if ENABLE(DRAG_SUPPORT)
+ static DragClient* dummyDragClient = new EmptyDragClient;
+#else
+ static DragClient* dummyDragClient = 0;
+#endif
+ static InspectorClient* dummyInspectorClient = new EmptyInspectorClient;
+
+ m_chromeClient.set(new SVGImageChromeClient(this));
+
+ // FIXME: If this SVG ends up loading itself, we might leak the world.
+ // The comment said that the Cache code does not know about CachedImages
+ // holding Frames and won't know to break the cycle. But
+ m_page.set(new Page(m_chromeClient.get(), dummyContextMenuClient, dummyEditorClient, dummyDragClient, dummyInspectorClient, 0, 0, 0, 0));
+ m_page->settings()->setMediaEnabled(false);
+ m_page->settings()->setJavaScriptEnabled(false);
+ m_page->settings()->setPluginsEnabled(false);
+
+ RefPtr<Frame> frame = Frame::create(m_page.get(), 0, dummyFrameLoaderClient);
+ frame->setView(FrameView::create(frame.get()));
+ frame->init();
+ ResourceRequest fakeRequest(KURL(ParsedURLString, ""));
+ FrameLoader* loader = frame->loader();
+ loader->setForcedSandboxFlags(SandboxAll);
+ loader->load(fakeRequest, false); // Make sure the DocumentLoader is created
+ loader->policyChecker()->cancelCheck(); // cancel any policy checks
+ loader->commitProvisionalLoad();
+ loader->writer()->setMIMEType("image/svg+xml");
+ loader->writer()->begin(KURL()); // create the empty document
+ loader->writer()->addData(data()->data(), data()->size());
+ loader->writer()->end();
+ frame->view()->setTransparent(true); // SVG Images are transparent.
+ }
+
+ return m_page;
+}
+
+String SVGImage::filenameExtension() const
+{
+ return "svg";
+}
+
+}
+
+#endif // ENABLE(SVG)