summaryrefslogtreecommitdiffstats
path: root/chromium/third_party/skia/third_party/harfbuzz/src/harfbuzz-gdef.h
diff options
context:
space:
mode:
Diffstat (limited to 'chromium/third_party/skia/third_party/harfbuzz/src/harfbuzz-gdef.h')
-rw-r--r--chromium/third_party/skia/third_party/harfbuzz/src/harfbuzz-gdef.h135
1 files changed, 135 insertions, 0 deletions
diff --git a/chromium/third_party/skia/third_party/harfbuzz/src/harfbuzz-gdef.h b/chromium/third_party/skia/third_party/harfbuzz/src/harfbuzz-gdef.h
new file mode 100644
index 00000000000..b6dcadcf887
--- /dev/null
+++ b/chromium/third_party/skia/third_party/harfbuzz/src/harfbuzz-gdef.h
@@ -0,0 +1,135 @@
+/*
+ * Copyright (C) 1998-2004 David Turner and Werner Lemberg
+ * Copyright (C) 2006 Behdad Esfahbod
+ *
+ * This is part of HarfBuzz, an OpenType Layout engine library.
+ *
+ * Permission is hereby granted, without written agreement and without
+ * license or royalty fees, to use, copy, modify, and distribute this
+ * software and its documentation for any purpose, provided that the
+ * above copyright notice and the following two paragraphs appear in
+ * all copies of this software.
+ *
+ * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR
+ * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
+ * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN
+ * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
+ * DAMAGE.
+ *
+ * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING,
+ * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+ * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS
+ * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO
+ * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
+ */
+
+#ifndef HARFBUZZ_GDEF_H
+#define HARFBUZZ_GDEF_H
+
+#include "harfbuzz-open.h"
+#include "harfbuzz-stream.h"
+
+HB_BEGIN_HEADER
+
+/* GDEF glyph properties. Note that HB_GDEF_COMPONENT has no corresponding
+ * flag in the LookupFlag field. */
+#define HB_GDEF_BASE_GLYPH 0x0002
+#define HB_GDEF_LIGATURE 0x0004
+#define HB_GDEF_MARK 0x0008
+#define HB_GDEF_COMPONENT 0x0010
+
+
+typedef struct HB_AttachPoint_ HB_AttachPoint;
+
+
+struct HB_AttachList_
+{
+ HB_Bool loaded;
+
+ HB_Coverage Coverage; /* Coverage table */
+ HB_UShort GlyphCount; /* number of glyphs with
+ attachments */
+ HB_AttachPoint* AttachPoint; /* array of AttachPoint tables */
+};
+
+typedef struct HB_AttachList_ HB_AttachList;
+
+typedef struct HB_LigGlyph_ HB_LigGlyph;
+
+struct HB_LigCaretList_
+{
+ HB_Bool loaded;
+
+ HB_Coverage Coverage; /* Coverage table */
+ HB_UShort LigGlyphCount; /* number of ligature glyphs */
+ HB_LigGlyph* LigGlyph; /* array of LigGlyph tables */
+};
+
+typedef struct HB_LigCaretList_ HB_LigCaretList;
+
+
+
+/* The `NewGlyphClasses' field is not defined in the TTO specification.
+ We use it for fonts with a constructed `GlyphClassDef' structure
+ (i.e., which don't have a GDEF table) to collect glyph classes
+ assigned during the lookup process. The number of arrays in this
+ pointer array is GlyphClassDef->cd.cd2.ClassRangeCount+1; the nth
+ array then contains the glyph class values of the glyphs not covered
+ by the ClassRangeRecords structures with index n-1 and n. We store
+ glyph class values for four glyphs in a single array element.
+
+ `LastGlyph' is identical to the number of glyphs minus one in the
+ font; we need it only if `NewGlyphClasses' is not NULL (to have an
+ upper bound for the last array).
+
+ Note that we first store the file offset to the `MarkAttachClassDef'
+ field (which has been introduced in OpenType 1.2) -- since the
+ `Version' field value hasn't been increased to indicate that we have
+ one more field for some obscure reason, we must parse the GSUB table
+ to find out whether class values refer to this table. Only then we
+ can finally load the MarkAttachClassDef structure if necessary. */
+
+struct HB_GDEFHeader_
+{
+ HB_UInt offset;
+
+ HB_16Dot16 Version;
+
+ HB_ClassDefinition GlyphClassDef;
+ HB_AttachList AttachList;
+ HB_LigCaretList LigCaretList;
+ HB_UInt MarkAttachClassDef_offset;
+ HB_ClassDefinition MarkAttachClassDef; /* new in OT 1.2 */
+
+ HB_UShort LastGlyph;
+ HB_UShort** NewGlyphClasses;
+};
+
+typedef struct HB_GDEFHeader_ HB_GDEFHeader;
+typedef struct HB_GDEFHeader_* HB_GDEF;
+
+
+HB_Error HB_New_GDEF_Table( HB_GDEFHeader** retptr );
+
+
+HB_Error HB_Load_GDEF_Table( HB_Stream stream,
+ HB_GDEFHeader** gdef );
+
+
+HB_Error HB_Done_GDEF_Table ( HB_GDEFHeader* gdef );
+
+
+HB_Error HB_GDEF_Get_Glyph_Property( HB_GDEFHeader* gdef,
+ HB_UShort glyphID,
+ HB_UShort* property );
+
+HB_Error HB_GDEF_Build_ClassDefinition( HB_GDEFHeader* gdef,
+ HB_UShort num_glyphs,
+ HB_UShort glyph_count,
+ HB_UShort* glyph_array,
+ HB_UShort* class_array );
+
+
+HB_END_HEADER
+
+#endif /* HARFBUZZ_GDEF_H */