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/*
* Copyright (C) 2006, 2007 Apple Inc. All rights reserved.
* Copyright (C) 2006 Michael Emmel mike.emmel@gmail.com
* Copyright (C) 2007 Alp Toker <alp.toker@collabora.co.uk>
* Copyright (C) 2007 Pioneer Research Center USA, Inc.
*
* 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 "SimpleFontData.h"
#include <pango/pango-font.h>
namespace WebCore {
static PangoGlyph pango_font_get_glyph(PangoFont* font, PangoContext* context, gunichar wc)
{
PangoGlyph result = 0;
gchar buffer[7];
gint length = g_unichar_to_utf8(wc, buffer);
g_return_val_if_fail(length, 0);
GList* items = pango_itemize(context, buffer, 0, length, NULL, NULL);
if (g_list_length(items) == 1) {
PangoItem* item = reinterpret_cast<PangoItem*>(items->data);
PangoFont* tmpFont = item->analysis.font;
item->analysis.font = font;
PangoGlyphString* glyphs = pango_glyph_string_new();
pango_shape(buffer, length, &item->analysis, glyphs);
item->analysis.font = tmpFont;
if (glyphs->num_glyphs == 1)
result = glyphs->glyphs[0].glyph;
else
g_warning("didn't get 1 glyph but %d", glyphs->num_glyphs);
pango_glyph_string_free(glyphs);
}
g_list_foreach(items, (GFunc)pango_item_free, NULL);
g_list_free(items);
return result;
}
bool GlyphPage::fill(unsigned offset, unsigned length, UChar* buffer, unsigned bufferLength, const SimpleFontData* fontData)
{
// The bufferLength will be greater than the glyph page size if the buffer has Unicode supplementary characters.
// We won't support this for now.
if (bufferLength > GlyphPage::size)
return false;
if (!fontData->platformData().m_font || fontData->platformData().m_font == reinterpret_cast<PangoFont*>(-1))
return false;
bool haveGlyphs = false;
for (unsigned i = 0; i < length; i++) {
Glyph glyph = pango_font_get_glyph(fontData->platformData().m_font, fontData->platformData().m_context, buffer[i]);
if (!glyph)
setGlyphDataForIndex(offset + i, 0, 0);
else {
setGlyphDataForIndex(offset + i, glyph, fontData);
haveGlyphs = true;
}
}
return haveGlyphs;
}
}
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