1 files changed, 173 insertions, 0 deletions
diff --git a/Source/WebCore/rendering/svg/RenderSVGForeignObject.cpp b/Source/WebCore/rendering/svg/RenderSVGForeignObject.cpp
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+++ b/Source/WebCore/rendering/svg/RenderSVGForeignObject.cpp
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+/*
+ * Copyright (C) 2006 Apple Computer, Inc.
+ * Copyright (C) 2009 Google, Inc.
+ * Copyright (C) Research In Motion Limited 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"
+
+#if ENABLE(SVG) && ENABLE(SVG_FOREIGN_OBJECT)
+#include "RenderSVGForeignObject.h"
+
+#include "GraphicsContext.h"
+#include "RenderSVGResource.h"
+#include "RenderView.h"
+#include "SVGForeignObjectElement.h"
+#include "SVGRenderSupport.h"
+#include "SVGSVGElement.h"
+#include "TransformState.h"
+
+namespace WebCore {
+
+RenderSVGForeignObject::RenderSVGForeignObject(SVGForeignObjectElement* node) 
+    : RenderSVGBlock(node)
+    , m_needsTransformUpdate(true)
+{
+}
+
+RenderSVGForeignObject::~RenderSVGForeignObject()
+{
+}
+
+void RenderSVGForeignObject::paint(PaintInfo& paintInfo, int, int)
+{
+    if (paintInfo.context->paintingDisabled())
+        return;
+
+    PaintInfo childPaintInfo(paintInfo);
+    childPaintInfo.context->save();
+    childPaintInfo.applyTransform(localTransform());
+
+    if (SVGRenderSupport::isOverflowHidden(this))
+        childPaintInfo.context->clip(m_viewport);
+
+    float opacity = style()->opacity();
+    if (opacity < 1.0f)
+        childPaintInfo.context->beginTransparencyLayer(opacity);
+
+    RenderBlock::paint(childPaintInfo, 0, 0);
+
+    if (opacity < 1.0f)
+        childPaintInfo.context->endTransparencyLayer();
+
+    childPaintInfo.context->restore();
+}
+
+IntRect RenderSVGForeignObject::clippedOverflowRectForRepaint(RenderBoxModelObject* repaintContainer)
+{
+    return SVGRenderSupport::clippedOverflowRectForRepaint(this, repaintContainer);
+}
+
+void RenderSVGForeignObject::computeRectForRepaint(RenderBoxModelObject* repaintContainer, IntRect& repaintRect, bool fixed)
+{
+    SVGRenderSupport::computeRectForRepaint(this, repaintContainer, repaintRect, fixed);
+}
+
+const AffineTransform& RenderSVGForeignObject::localToParentTransform() const
+{
+    m_localToParentTransform = localTransform();
+    m_localToParentTransform.translate(m_viewport.x(), m_viewport.y());
+    return m_localToParentTransform;
+}
+
+void RenderSVGForeignObject::computeLogicalWidth()
+{
+    // FIXME: Investigate in size rounding issues
+    setWidth(static_cast<int>(roundf(m_viewport.width())));
+}
+
+void RenderSVGForeignObject::computeLogicalHeight()
+{
+    // FIXME: Investigate in size rounding issues
+    setHeight(static_cast<int>(roundf(m_viewport.height())));
+}
+
+void RenderSVGForeignObject::layout()
+{
+    ASSERT(needsLayout());
+    ASSERT(!view()->layoutStateEnabled()); // RenderSVGRoot disables layoutState for the SVG rendering tree.
+
+    LayoutRepainter repainter(*this, checkForRepaintDuringLayout());
+    SVGForeignObjectElement* foreign = static_cast<SVGForeignObjectElement*>(node());
+
+    bool updateCachedBoundariesInParents = false;
+    if (m_needsTransformUpdate) {
+        m_localTransform = foreign->animatedLocalTransform();
+        m_needsTransformUpdate = false;
+        updateCachedBoundariesInParents = true;
+    }
+
+    FloatRect oldViewport = m_viewport;
+
+    // Cache viewport boundaries
+    FloatPoint viewportLocation(foreign->x().value(foreign), foreign->y().value(foreign));
+    m_viewport = FloatRect(viewportLocation, FloatSize(foreign->width().value(foreign), foreign->height().value(foreign)));
+    if (!updateCachedBoundariesInParents)
+        updateCachedBoundariesInParents = oldViewport != m_viewport;
+
+    // Set box origin to the foreignObject x/y translation, so positioned objects in XHTML content get correct
+    // positions. A regular RenderBoxModelObject would pull this information from RenderStyle - in SVG those
+    // properties are ignored for non <svg> elements, so we mimic what happens when specifying them through CSS.
+
+    // FIXME: Investigate in location rounding issues - only affects RenderSVGForeignObject & RenderSVGText
+    setLocation(roundedIntPoint(viewportLocation));
+
+    bool layoutChanged = m_everHadLayout && selfNeedsLayout();
+    RenderBlock::layout();
+    ASSERT(!needsLayout());
+
+    // If our bounds changed, notify the parents.
+    if (updateCachedBoundariesInParents)
+        RenderSVGBlock::setNeedsBoundariesUpdate();
+
+    // Invalidate all resources of this client if our layout changed.
+    if (layoutChanged)
+        SVGResourcesCache::clientLayoutChanged(this);
+
+    repainter.repaintAfterLayout();
+}
+
+bool RenderSVGForeignObject::nodeAtFloatPoint(const HitTestRequest& request, HitTestResult& result, const FloatPoint& pointInParent, HitTestAction hitTestAction)
+{
+    FloatPoint localPoint = localTransform().inverse().mapPoint(pointInParent);
+
+    // Early exit if local point is not contained in clipped viewport area
+    if (SVGRenderSupport::isOverflowHidden(this) && !m_viewport.contains(localPoint))
+        return false;
+
+    IntPoint roundedLocalPoint = roundedIntPoint(localPoint);
+    return RenderBlock::nodeAtPoint(request, result, roundedLocalPoint.x(), roundedLocalPoint.y(), 0, 0, hitTestAction);
+}
+
+bool RenderSVGForeignObject::nodeAtPoint(const HitTestRequest&, HitTestResult&, int, int, int, int, HitTestAction)
+{
+    ASSERT_NOT_REACHED();
+    return false;
+}
+
+void RenderSVGForeignObject::mapLocalToContainer(RenderBoxModelObject* repaintContainer, bool fixed, bool useTransforms, TransformState& transformState) const
+{
+    // When crawling up the hierachy starting from foreignObject child content, useTransforms may not be set to true.
+    if (!useTransforms)
+        useTransforms = true;
+    SVGRenderSupport::mapLocalToContainer(this, repaintContainer, fixed, useTransforms, transformState);
+}
+
+}
+
+#endif