WebCore/rendering/RenderSVGText.cpp
changeset 0 4f2f89ce4247
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/WebCore/rendering/RenderSVGText.cpp	Fri Sep 17 09:02:29 2010 +0300
@@ -0,0 +1,202 @@
+/*
+ * This file is part of the WebKit project.
+ *
+ * Copyright (C) 2006 Apple Computer, Inc.
+ *               2006 Alexander Kellett <lypanov@kde.org>
+ *               2006 Oliver Hunt <ojh16@student.canterbury.ac.nz>
+ *               2007 Nikolas Zimmermann <zimmermann@kde.org>
+ *               2008 Rob Buis <buis@kde.org>
+ *               2009 Dirk Schulze <krit@webkit.org>
+ *
+ * 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)
+#include "RenderSVGText.h"
+
+#include "FloatConversion.h"
+#include "FloatQuad.h"
+#include "GraphicsContext.h"
+#include "HitTestRequest.h"
+#include "PointerEventsHitRules.h"
+#include "RenderLayer.h"
+#include "RenderSVGResource.h"
+#include "RenderSVGRoot.h"
+#include "SVGLengthList.h"
+#include "SVGRenderSupport.h"
+#include "SVGRootInlineBox.h"
+#include "SVGTextElement.h"
+#include "SVGTransformList.h"
+#include "SVGURIReference.h"
+#include "SimpleFontData.h"
+#include "TransformState.h"
+
+namespace WebCore {
+
+RenderSVGText::RenderSVGText(SVGTextElement* node) 
+    : RenderSVGBlock(node)
+    , m_needsTransformUpdate(true)
+{
+}
+
+IntRect RenderSVGText::clippedOverflowRectForRepaint(RenderBoxModelObject* repaintContainer)
+{
+    return SVGRenderSupport::clippedOverflowRectForRepaint(this, repaintContainer);
+}
+
+void RenderSVGText::computeRectForRepaint(RenderBoxModelObject* repaintContainer, IntRect& repaintRect, bool fixed)
+{
+    SVGRenderSupport::computeRectForRepaint(this, repaintContainer, repaintRect, fixed);
+}
+
+void RenderSVGText::mapLocalToContainer(RenderBoxModelObject* repaintContainer, bool fixed, bool useTransforms, TransformState& transformState) const
+{
+    SVGRenderSupport::mapLocalToContainer(this, repaintContainer, fixed, useTransforms, transformState);
+}
+
+void RenderSVGText::layout()
+{
+    ASSERT(needsLayout());
+    LayoutRepainter repainter(*this, m_everHadLayout && checkForRepaintDuringLayout());
+
+    if (m_needsTransformUpdate) {
+        SVGTextElement* text = static_cast<SVGTextElement*>(node());
+        m_localTransform = text->animatedLocalTransform();
+        m_needsTransformUpdate = false;
+    }
+
+    // Reduced version of RenderBlock::layoutBlock(), which only takes care of SVG text.
+    // All if branches that could cause early exit in RenderBlocks layoutBlock() method are turned into assertions.
+    ASSERT(!isInline());
+    ASSERT(!layoutOnlyPositionedObjects());
+    ASSERT(!scrollsOverflow());
+    ASSERT(!hasControlClip());
+    ASSERT(!hasColumns());
+    ASSERT(!positionedObjects());
+    ASSERT(!m_overflow);
+    ASSERT(!isAnonymousBlock());
+
+    if (!firstChild())
+        setChildrenInline(true);
+
+    ASSERT(childrenInline());
+    forceLayoutInlineChildren();
+
+    // Invalidate all resources of this client, if we changed something.
+    if (m_everHadLayout && selfNeedsLayout())
+        RenderSVGResource::invalidateAllResourcesOfRenderer(this);
+
+    repainter.repaintAfterLayout();
+    setNeedsLayout(false);
+}
+
+RootInlineBox* RenderSVGText::createRootInlineBox() 
+{
+    RootInlineBox* box = new (renderArena()) SVGRootInlineBox(this);
+    box->setHasVirtualHeight();
+    return box;
+}
+
+bool RenderSVGText::nodeAtFloatPoint(const HitTestRequest& request, HitTestResult& result, const FloatPoint& pointInParent, HitTestAction hitTestAction)
+{
+    PointerEventsHitRules hitRules(PointerEventsHitRules::SVG_TEXT_HITTESTING, request, style()->pointerEvents());
+    bool isVisible = (style()->visibility() == VISIBLE);
+    if (isVisible || !hitRules.requireVisible) {
+        if ((hitRules.canHitStroke && (style()->svgStyle()->hasStroke() || !hitRules.requireStroke))
+            || (hitRules.canHitFill && (style()->svgStyle()->hasFill() || !hitRules.requireFill))) {
+            FloatPoint localPoint = localToParentTransform().inverse().mapPoint(pointInParent);
+
+            if (!SVGRenderSupport::pointInClippingArea(this, localPoint))
+                return false;       
+
+            return RenderBlock::nodeAtPoint(request, result, (int)localPoint.x(), (int)localPoint.y(), 0, 0, hitTestAction);
+        }
+    }
+
+    return false;
+}
+
+void RenderSVGText::destroy()
+{
+    RenderSVGResource::invalidateAllResourcesOfRenderer(this);
+    RenderSVGBlock::destroy();
+}
+
+bool RenderSVGText::nodeAtPoint(const HitTestRequest&, HitTestResult&, int, int, int, int, HitTestAction)
+{
+    ASSERT_NOT_REACHED();
+    return false;
+}
+
+void RenderSVGText::absoluteQuads(Vector<FloatQuad>& quads)
+{
+    quads.append(localToAbsoluteQuad(strokeBoundingBox()));
+}
+
+void RenderSVGText::paint(PaintInfo& paintInfo, int, int)
+{
+    if (paintInfo.context->paintingDisabled())
+        return;
+
+    if (paintInfo.phase != PaintPhaseForeground
+     && paintInfo.phase != PaintPhaseSelfOutline
+     && paintInfo.phase != PaintPhaseSelection)
+         return;
+
+    PaintInfo blockInfo(paintInfo);
+    blockInfo.context->save();
+    blockInfo.applyTransform(localToParentTransform());
+    RenderBlock::paint(blockInfo, 0, 0);
+    blockInfo.context->restore();
+}
+
+FloatRect RenderSVGText::strokeBoundingBox() const
+{
+    FloatRect strokeBoundaries = objectBoundingBox();
+    if (!style()->svgStyle()->hasStroke())
+        return strokeBoundaries;
+
+    strokeBoundaries.inflate(SVGRenderStyle::cssPrimitiveToLength(this, style()->svgStyle()->strokeWidth(), 1.0f));
+    return strokeBoundaries;
+}
+
+FloatRect RenderSVGText::repaintRectInLocalCoordinates() const
+{
+    FloatRect repaintRect = strokeBoundingBox();
+    SVGRenderSupport::intersectRepaintRectWithResources(this, repaintRect);
+
+    return repaintRect;
+}
+
+// Fix for <rdar://problem/8048875>. We should not render :first-line CSS Style
+// in a SVG text element context.
+RenderBlock* RenderSVGText::firstLineBlock() const
+{
+    return 0;
+}
+
+// Fix for <rdar://problem/8048875>. We should not render :first-letter CSS Style
+// in a SVG text element context.
+void RenderSVGText::updateFirstLetter()
+{
+}
+
+}
+
+#endif // ENABLE(SVG)