Adding upstream version 124.0.1.upstream/124.0.1

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 82 insertions, 0 deletions

diff --git a/gfx/ots/src/glyf.h b/gfx/ots/src/glyf.h
new file mode 100644
index 0000000000..f85fdc4652
--- /dev/null
+++ b/gfx/ots/src/glyf.h
@@ -0,0 +1,82 @@
+// 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 OpenTypeMAXP;
+
+class OpenTypeGLYF : public Table {
+ public:
+  explicit OpenTypeGLYF(Font *font, uint32_t tag)
+      : Table(font, tag, tag), maxp(NULL) { }
+
+  ~OpenTypeGLYF() {
+    for (auto* p : fixed_bboxes) {
+      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);
+  bool ParseCompositeGlyph(
+      Buffer &glyph,
+      ComponentPointCount* component_point_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);
+
+  OpenTypeMAXP* maxp;
+
+  std::vector<std::pair<const uint8_t*, size_t> > iov;
+
+  std::vector<uint8_t*> fixed_bboxes;
+};
+
+}  // namespace ots
+
+#endif  // OTS_GLYF_H_