| /* |
| * 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 { |
| public: |
| 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 BreakupClustersCallback = |
| 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 BreakupClustersCallback& 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); |
| |
| private: |
| 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 |