blob: 5df2224c86d4c6c4ff987a4663cbf968fdeb7b57 [file] [log] [blame]
* Copyright 2019 Google Inc.
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
#ifndef SkShaperJSONWriter_DEFINED
#define SkShaperJSONWriter_DEFINED
#include "include/core/SkPoint.h"
#include "include/core/SkTypes.h"
#include "modules/skshaper/include/SkShaper.h"
#include <cstdint>
#include <functional>
#include <string>
#include <vector>
class SkJSONWriter;
template <typename T> class SkSpan;
class SkShaperJSONWriter final : public SkShaper::RunHandler {
SkShaperJSONWriter(SkJSONWriter* JSONWriter, const char* utf8, size_t size);
void beginLine() override;
void runInfo(const RunInfo& info) override;
void commitRunInfo() override;
Buffer runBuffer(const RunInfo& info) override;
void commitRunBuffer(const RunInfo& info) override;
void commitLine() override {}
using BreakupCluastersCallback =
std::function<void(size_t, size_t, uint32_t, uint32_t)>;
// Break up cluster into a set of ranges for the UTF8, and the glyphIDs.
static void BreakupClusters(size_t utf8Begin, size_t utf8End,
SkSpan<const uint32_t> clusters,
const BreakupCluastersCallback& processMToN);
using VisualizeClustersCallback =
std::function<void(size_t, SkSpan<const char>, SkSpan<const SkGlyphID>)>;
// Gather runs of 1:1 into larger runs, and display M:N as single entries.
static void VisualizeClusters(const char utf8[],
size_t utf8Begin, size_t utf8End,
SkSpan<const SkGlyphID> glyphIDs,
SkSpan<const uint32_t> clusters,
const VisualizeClustersCallback& processMToN);
void displayMToN(size_t codePointCount,
SkSpan<const char> utf8,
SkSpan<const SkGlyphID> glyphIDs);
SkJSONWriter* fJSONWriter;
std::vector<SkGlyphID> fGlyphs;
std::vector<SkPoint> fPositions;
std::vector<uint32_t> fClusters;
std::string fUTF8;
#endif // SkShaperJSONWriter_DEFINED