/*

 * 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 "GlyphPageTreeNode.h"

#include "FontData.h"

#include "WebCoreSystemInterface.h"

#include <ApplicationServices/ApplicationServices.h>

namespace WebCore {

bool GlyphPage::fill(UChar* buffer, unsigned bufferLength, const FontData* fontData)

{

    // Use an array of long so we get good enough alignment.

    long glyphVector[(GLYPH_VECTOR_SIZE + sizeof(long) - 1) / sizeof(long)];

    OSStatus status = wkInitializeGlyphVector(GlyphPage::size, &glyphVector);

    if (status != noErr)

        // This should never happen, perhaps indicates a bad font!  If it does the

        // font substitution code will find an alternate font.

        return false;

    wkConvertCharToGlyphs(fontData->m_styleGroup, buffer, bufferLength, &glyphVector);

    unsigned numGlyphs = wkGetGlyphVectorNumGlyphs(&glyphVector);

    if (numGlyphs != GlyphPage::size) {

        // This should never happen, perhaps indicates a bad font?

        // If it does happen, the font substitution code will find an alternate font.

        wkClearGlyphVector(&glyphVector);

        return false;

    }

    bool haveGlyphs = false;

    ATSLayoutRecord* glyphRecord = (ATSLayoutRecord*)wkGetGlyphVectorFirstRecord(glyphVector);

    for (unsigned i = 0; i < GlyphPage::size; i++) {

        Glyph glyph = glyphRecord->glyphID;

        setGlyphDataForIndex(i, glyph, fontData);

        if (!haveGlyphs && glyph)

            haveGlyphs = true;

        glyphRecord = (ATSLayoutRecord *)((char *)glyphRecord + wkGetGlyphVectorRecordSize(glyphVector));

    }

    wkClearGlyphVector(&glyphVector);

    return haveGlyphs;

}

} // namespace WebCore