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/*
* 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 "SVGTextLayoutBuilder.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());
bool updateCachedBoundariesInParents = false;
if (m_needsTransformUpdate) {
SVGTextElement* text = static_cast<SVGTextElement*>(node());
m_localTransform = text->animatedLocalTransform();
m_needsTransformUpdate = false;
updateCachedBoundariesInParents = true;
}
SVGTextLayoutBuilder layoutBuilder;
layoutBuilder.buildLayoutAttributesForTextSubtree(this);
// 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);
// FIXME: We need to find a way to only layout the child boxes, if needed.
FloatRect oldBoundaries = objectBoundingBox();
ASSERT(childrenInline());
forceLayoutInlineChildren();
if (!updateCachedBoundariesInParents)
updateCachedBoundariesInParents = oldBoundaries != objectBoundingBox();
// Invalidate all resources of this client if our layout changed.
if (m_everHadLayout && selfNeedsLayout())
SVGResourcesCache::clientLayoutChanged(this);
// If our bounds changed, notify the parents.
if (updateCachedBoundariesInParents)
RenderSVGBlock::setNeedsBoundariesUpdate();
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;
}
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();
const SVGRenderStyle* svgStyle = style()->svgStyle();
if (!svgStyle->hasStroke())
return strokeBoundaries;
ASSERT(node());
ASSERT(node()->isSVGElement());
strokeBoundaries.inflate(svgStyle->strokeWidth().value(static_cast<SVGElement*>(node())));
return strokeBoundaries;
}
FloatRect RenderSVGText::repaintRectInLocalCoordinates() const
{
FloatRect repaintRect = strokeBoundingBox();
SVGRenderSupport::intersectRepaintRectWithResources(this, repaintRect);
if (const ShadowData* textShadow = style()->textShadow())
textShadow->adjustRectForShadow(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)
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