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/*
* Copyright (C) 2012 Koji Ishii <kojiishi@gmail.com>
*
* 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.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. 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 INC. 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.
*/
#ifndef THIRD_PARTY_BLINK_RENDERER_PLATFORM_FONTS_OPENTYPE_OPEN_TYPE_VERTICAL_DATA_H_
#define THIRD_PARTY_BLINK_RENDERER_PLATFORM_FONTS_OPENTYPE_OPEN_TYPE_VERTICAL_DATA_H_
#include "base/memory/scoped_refptr.h"
#include "third_party/blink/renderer/platform/fonts/glyph.h"
#include "third_party/blink/renderer/platform/platform_export.h"
#include "third_party/blink/renderer/platform/wtf/allocator.h"
#include "third_party/blink/renderer/platform/wtf/hash_map.h"
#include "third_party/blink/renderer/platform/wtf/ref_counted.h"
#include "third_party/blink/renderer/platform/wtf/vector.h"
#include <SkPaint.h>
#include <SkRefCnt.h>
#include <SkTypeface.h>
namespace blink {
class PLATFORM_EXPORT OpenTypeVerticalData
: public RefCounted<OpenTypeVerticalData> {
public:
static scoped_refptr<OpenTypeVerticalData> CreateUnscaled(
sk_sp<SkTypeface> typeface) {
return base::AdoptRef(new OpenTypeVerticalData(typeface));
}
void SetScaleAndFallbackMetrics(float size_per_unit,
float ascent,
int height);
bool IsOpenType() const { return !advance_widths_.IsEmpty(); }
bool HasVerticalMetrics() const { return !advance_heights_.IsEmpty(); }
float AdvanceHeight(Glyph) const;
void GetVerticalTranslationsForGlyphs(const SkPaint&,
const Glyph*,
size_t,
float* out_xy_array) const;
private:
explicit OpenTypeVerticalData(sk_sp<SkTypeface>);
void LoadMetrics(sk_sp<SkTypeface>);
bool HasVORG() const { return !vert_origin_y_.IsEmpty(); }
HashMap<Glyph, Glyph> vertical_glyph_map_;
Vector<uint16_t> advance_widths_;
Vector<uint16_t> advance_heights_;
Vector<int16_t> top_side_bearings_;
int16_t default_vert_origin_y_;
HashMap<Glyph, int16_t> vert_origin_y_;
float size_per_unit_;
float ascent_fallback_;
int height_fallback_;
};
} // namespace blink
#endif // THIRD_PARTY_BLINK_RENDERER_PLATFORM_FONTS_OPENTYPE_OPEN_TYPE_VERTICAL_DATA_H_
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