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/*
* This file is part of the WebKit project.
*
* Copyright (C) 2006 Oliver Hunt <ojh16@student.canterbury.ac.nz>
* (C) 2006 Apple Computer Inc.
* (C) 2007 Nikolas Zimmermann <zimmermann@kde.org>
* (C) 2008 Rob Buis <buis@kde.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 "RenderSVGInlineText.h"
#include "FloatConversion.h"
#include "FloatQuad.h"
#include "RenderBlock.h"
#include "RenderSVGRoot.h"
#include "SVGInlineTextBox.h"
#include "SVGRootInlineBox.h"
#include "VisiblePosition.h"
namespace WebCore {
RenderSVGInlineText::RenderSVGInlineText(Node* n, PassRefPtr<StringImpl> str)
: RenderText(n, str)
{
}
void RenderSVGInlineText::styleDidChange(StyleDifference diff, const RenderStyle* oldStyle)
{
RenderText::styleDidChange(diff, oldStyle);
// FIXME: Should optimize this.
// SVG text is always transformed.
if (RefPtr<StringImpl> textToTransform = originalText())
setText(textToTransform.release(), true);
}
InlineTextBox* RenderSVGInlineText::createTextBox()
{
InlineTextBox* box = new (renderArena()) SVGInlineTextBox(this);
box->setHasVirtualHeight();
return box;
}
IntRect RenderSVGInlineText::localCaretRect(InlineBox*, int, int*)
{
return IntRect();
}
IntRect RenderSVGInlineText::linesBoundingBox() const
{
IntRect boundingBox;
for (InlineTextBox* box = firstTextBox(); box; box = box->nextTextBox())
boundingBox.unite(box->calculateBoundaries());
return boundingBox;
}
bool RenderSVGInlineText::characterStartsNewTextChunk(int position) const
{
ASSERT(m_attributes.xValues().size() == textLength());
ASSERT(m_attributes.yValues().size() == textLength());
ASSERT(position >= 0);
ASSERT(position < static_cast<int>(textLength()));
int currentPosition = 0;
unsigned size = m_attributes.characterDataValues().size();
for (unsigned i = 0; i < size; ++i) {
const SVGTextLayoutAttributes::CharacterData& data = m_attributes.characterDataValues().at(i);
// We found the desired character.
if (currentPosition == position) {
if (isVerticalWritingMode(style()->svgStyle()))
return m_attributes.yValues().at(position) != SVGTextLayoutAttributes::emptyValue();
return m_attributes.xValues().at(position) != SVGTextLayoutAttributes::emptyValue();
}
currentPosition += data.spansCharacters;
if (currentPosition > position)
break;
}
// The desired position is available in the x/y list, but not in the character data values list.
// That means the previous character data described a single glyph, consisting of multiple unicode characters.
// The consequence is that the desired character does not define a new absolute x/y position, even if present in the x/y test.
// This code is tested by svg/W3C-SVG-1.1/text-text-06-t.svg (and described in detail, why this influences chunk detection).
ASSERT(currentPosition > position);
return false;
}
}
#endif // ENABLE(SVG)
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