/*
* 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 "PointerEventsHitRules.h"
#include "RenderLayer.h"
#include "RenderSVGRoot.h"
#include "SVGLengthList.h"
#include "SVGRenderSupport.h"
#include "SVGResourceFilter.h"
#include "SVGRootInlineBox.h"
#include "SVGTextElement.h"
#include "SVGTransformList.h"
#include "SVGURIReference.h"
#include "SimpleFontData.h"
namespace WebCore {
RenderSVGText::RenderSVGText(SVGTextElement* node)
: RenderSVGBlock(node)
{
}
IntRect RenderSVGText::clippedOverflowRectForRepaint(RenderBoxModelObject* repaintContainer)
{
return SVGRenderBase::clippedOverflowRectForRepaint(this, repaintContainer);
}
void RenderSVGText::computeRectForRepaint(RenderBoxModelObject* repaintContainer, IntRect& repaintRect, bool fixed)
{
SVGRenderBase::computeRectForRepaint(this, repaintContainer, repaintRect, fixed);
}
void RenderSVGText::mapLocalToContainer(RenderBoxModelObject* repaintContainer, bool fixed , bool useTransforms, TransformState& transformState) const
{
SVGRenderBase::mapLocalToContainer(this, repaintContainer, fixed, useTransforms, transformState);
}
void RenderSVGText::layout()
{
ASSERT(needsLayout());
LayoutRepainter repainter(*this, checkForRepaintDuringLayout());
// Best guess for a relative starting point
SVGTextElement* text = static_cast<SVGTextElement*>(node());
int xOffset = (int)(text->x()->getFirst().value(text));
int yOffset = (int)(text->y()->getFirst().value(text));
setLocation(xOffset, yOffset);
m_localTransform = text->animatedLocalTransform();
RenderBlock::layout();
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, 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);
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::absoluteRects(Vector<IntRect>& rects, int, int)
{
RenderSVGRoot* root = findSVGRootObject(parent());
if (!root)
return;
// Don't use objectBoundingBox here, as it's unites the selection rects. Makes it hard
// to spot errors, if there are any using WebInspector. Individually feed them into 'rects'.
for (InlineRunBox* runBox = firstLineBox(); runBox; runBox = runBox->nextLineBox()) {
ASSERT(runBox->isInlineFlowBox());
InlineFlowBox* flowBox = static_cast<InlineFlowBox*>(runBox);
for (InlineBox* box = flowBox->firstChild(); box; box = box->nextOnLine()) {
FloatRect boxRect(box->x(), box->y(), box->width(), box->height());
// FIXME: crawling up the parent chain to map each rect is very inefficient
// we should compute the absoluteTransform outside this loop first.
rects.append(enclosingIntRect(localToAbsoluteQuad(boxRect).boundingBox()));
}
}
}
void RenderSVGText::absoluteQuads(Vector<FloatQuad>& quads)
{
RenderSVGRoot* root = findSVGRootObject(parent());
if (!root)
return;
// Don't use objectBoundingBox here, as it's unites the selection rects. Makes it hard
// to spot errors, if there are any using WebInspector. Individually feed them into 'rects'.
for (InlineRunBox* runBox = firstLineBox(); runBox; runBox = runBox->nextLineBox()) {
ASSERT(runBox->isInlineFlowBox());
InlineFlowBox* flowBox = static_cast<InlineFlowBox*>(runBox);
for (InlineBox* box = flowBox->firstChild(); box; box = box->nextOnLine()) {
FloatRect boxRect(box->x(), box->y(), box->width(), box->height());
// FIXME: crawling up the parent chain to map each quad is very inefficient
// we should compute the absoluteTransform outside this loop first.
quads.append(localToAbsoluteQuad(boxRect));
}
}
}
void RenderSVGText::paint(PaintInfo& paintInfo, int, int)
{
PaintInfo pi(paintInfo);
pi.context->save();
applyTransformToPaintInfo(pi, localToParentTransform());
RenderBlock::paint(pi, 0, 0);
pi.context->restore();
}
FloatRect RenderSVGText::objectBoundingBox() const
{
FloatRect boundingBox;
for (InlineRunBox* runBox = firstLineBox(); runBox; runBox = runBox->nextLineBox()) {
ASSERT(runBox->isInlineFlowBox());
InlineFlowBox* flowBox = static_cast<InlineFlowBox*>(runBox);
for (InlineBox* box = flowBox->firstChild(); box; box = box->nextOnLine())
boundingBox.unite(FloatRect(box->x(), box->y(), box->width(), box->height()));
}
boundingBox.move(x(), y());
return boundingBox;
}
FloatRect RenderSVGText::strokeBoundingBox() const
{
FloatRect repaintRect = objectBoundingBox();
// SVG needs to include the strokeWidth(), not the textStrokeWidth().
if (style()->svgStyle()->hasStroke()) {
float strokeWidth = SVGRenderStyle::cssPrimitiveToLength(this, style()->svgStyle()->strokeWidth(), 1.0f);
#if ENABLE(SVG_FONTS)
const Font& font = style()->font();
if (font.primaryFont()->isSVGFont()) {
float scale = font.unitsPerEm() > 0 ? font.size() / font.unitsPerEm() : 0.0f;
if (scale != 0.0f)
strokeWidth /= scale;
}
#endif
repaintRect.inflate(strokeWidth);
}
return repaintRect;
}
FloatRect RenderSVGText::repaintRectInLocalCoordinates() const
{
FloatRect repaintRect = strokeBoundingBox();
// FIXME: We need to be careful here. We assume that there is no filter,
// clipper or masker if the rects are empty.
FloatRect rect = filterBoundingBoxForRenderer(this);
if (!rect.isEmpty())
repaintRect = rect;
rect = clipperBoundingBoxForRenderer(this);
if (!rect.isEmpty())
repaintRect.intersect(rect);
rect = maskerBoundingBoxForRenderer(this);
if (!rect.isEmpty())
repaintRect.intersect(rect);
style()->svgStyle()->inflateForShadow(repaintRect);
return repaintRect;
}
}
#endif // ENABLE(SVG)
// vim:ts=4:noet