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/*
* Copyright (C) 2006, 2007 Apple 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 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 "GlyphPage.h"
#include "Font.h"
#include "FontCascade.h"
#include <pal/spi/cg/CoreGraphicsSPI.h>
#include <pal/spi/cocoa/CoreTextSPI.h>
namespace WebCore {
static bool shouldFillWithVerticalGlyphs(const UChar* buffer, unsigned bufferLength, const Font& font)
{
if (!font.hasVerticalGlyphs())
return false;
for (unsigned i = 0; i < bufferLength; ++i) {
if (!FontCascade::isCJKIdeograph(buffer[i]))
return true;
}
return false;
}
static const constexpr CGGlyph deletedGlyph = 0xFFFF;
bool GlyphPage::fill(UChar* buffer, unsigned bufferLength)
{
ASSERT(bufferLength == GlyphPage::size || bufferLength == 2 * GlyphPage::size);
const Font& font = this->font();
Vector<CGGlyph, 512> glyphs(bufferLength);
unsigned glyphStep = bufferLength / GlyphPage::size;
if (shouldFillWithVerticalGlyphs(buffer, bufferLength, font))
CTFontGetVerticalGlyphsForCharacters(font.platformData().ctFont(), buffer, glyphs.data(), bufferLength);
else
CTFontGetGlyphsForCharacters(font.platformData().ctFont(), buffer, glyphs.data(), bufferLength);
bool haveGlyphs = false;
for (unsigned i = 0; i < GlyphPage::size; ++i) {
auto theGlyph = glyphs[i * glyphStep];
if (theGlyph && theGlyph != deletedGlyph) {
setGlyphForIndex(i, theGlyph);
haveGlyphs = true;
}
}
return haveGlyphs;
}
} // namespace WebCore