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/*
* Copyright (C) 2006 Apple Computer, Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of Apple Computer, Inc. ("Apple") nor the names of
* its contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "config.h"
#include "GlyphWidthMap.h"
namespace WebCore
{
float GlyphWidthMap::widthForGlyph(Glyph g)
{
unsigned pageNumber = (g / GlyphWidthPage::size);
GlyphWidthPage* page = locatePage(pageNumber);
if (page)
return page->widthForGlyph(g);
return cGlyphWidthUnknown;
}
void GlyphWidthMap::setWidthForGlyph(Glyph glyph, float width)
{
unsigned pageNumber = (glyph / GlyphWidthPage::size);
GlyphWidthPage* page = locatePage(pageNumber);
if (page)
page->setWidthForGlyph(glyph, width);
}
inline GlyphWidthMap::GlyphWidthPage* GlyphWidthMap::locatePage(unsigned pageNumber)
{
GlyphWidthPage* page;
if (pageNumber == 0) {
if (m_filledPrimaryPage)
return &m_primaryPage;
page = &m_primaryPage;
m_filledPrimaryPage = true;
} else {
if (m_pages) {
GlyphWidthPage* result = m_pages->get(pageNumber);
if (result)
return result;
}
page = new GlyphWidthPage;
if (!m_pages)
m_pages = new HashMap<int, GlyphWidthPage*>;
m_pages->set(pageNumber, page);
}
// Fill in the whole page with the unknown glyph width value.
for (unsigned i = 0; i < GlyphWidthPage::size; i++)
page->setWidthForIndex(i, cGlyphWidthUnknown);
return page;
}
}
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