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// Copyright (c) 2009-2017 The OTS Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef OTS_GLYF_H_
#define OTS_GLYF_H_
#include <new>
#include <utility>
#include <vector>
#include "ots.h"
namespace ots {
class OpenTypeLOCA;
class OpenTypeMAXP;
class OpenTypeGLYF : public Table {
public:
explicit OpenTypeGLYF(Font *font, uint32_t tag)
: Table(font, tag, tag), maxp(NULL) { }
~OpenTypeGLYF() {
for (auto* p : replacements) {
delete[] p;
}
}
bool Parse(const uint8_t *data, size_t length);
bool Serialize(OTSStream *out);
private:
struct GidAtLevel {
uint16_t gid;
uint32_t level;
};
struct ComponentPointCount {
ComponentPointCount() : accumulated_component_points(0) {};
uint32_t accumulated_component_points;
std::vector<GidAtLevel> gid_stack;
};
bool ParseFlagsForSimpleGlyph(Buffer &glyph,
uint32_t num_flags,
std::vector<uint8_t>& flags,
uint32_t *flag_index,
uint32_t *coordinates_length);
bool ParseSimpleGlyph(Buffer &glyph,
unsigned gid,
int16_t num_contours,
int16_t xmin,
int16_t ymin,
int16_t xmax,
int16_t ymax,
bool is_tricky_font);
// The skip_count outparam returns the number of bytes from the original
// glyph description that are being skipped on output (normally zero).
bool ParseCompositeGlyph(
Buffer &glyph,
unsigned glyph_id,
ComponentPointCount* component_point_count,
unsigned* skip_count);
bool TraverseComponentsCountingPoints(
Buffer& glyph,
uint16_t base_glyph_id,
uint32_t level,
ComponentPointCount* component_point_count);
Buffer GetGlyphBufferSection(
const uint8_t *data,
size_t length,
const std::vector<uint32_t>& loca_offsets,
unsigned glyph_id);
OpenTypeLOCA* loca;
OpenTypeMAXP* maxp;
std::vector<std::pair<const uint8_t*, size_t> > iov;
// Any blocks of replacement data created during parsing are stored here
// to be available during serialization.
std::vector<uint8_t*> replacements;
};
} // namespace ots
#endif // OTS_GLYF_H_