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src/java.desktop/share/native/libfontmanager/harfbuzz/hb-buffer.h
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@@ -61,18 +61,31 @@
* glyphs and their relation to input text.
*
*/
typedef struct hb_glyph_info_t {
hb_codepoint_t codepoint;
- hb_mask_t mask;
+ hb_mask_t mask; /* Holds hb_glyph_flags_t after hb_shape(), plus other things. */
uint32_t cluster;
/*< private >*/
hb_var_int_t var1;
hb_var_int_t var2;
} hb_glyph_info_t;
+typedef enum { /*< flags >*/
+ HB_GLYPH_FLAG_UNSAFE_TO_BREAK = 0x00000001,
+
+ HB_GLYPH_FLAG_DEFINED = 0x00000001 /* OR of all defined flags */
+} hb_glyph_flags_t;
+
+HB_EXTERN hb_glyph_flags_t
+hb_glyph_info_get_glyph_flags (const hb_glyph_info_t *info);
+
+#define hb_glyph_info_get_glyph_flags(info) \
+ ((hb_glyph_flags_t) ((unsigned int) (info)->mask & HB_GLYPH_FLAG_DEFINED))
+
+
/**
* hb_glyph_position_t:
* @x_advance: how much the line advances after drawing this glyph when setting
* text in horizontal direction.
* @y_advance: how much the line advances after drawing this glyph when setting
@@ -117,12 +130,12 @@
} hb_segment_properties_t;
#define HB_SEGMENT_PROPERTIES_DEFAULT {HB_DIRECTION_INVALID, \
HB_SCRIPT_INVALID, \
HB_LANGUAGE_INVALID, \
- NULL, \
- NULL}
+ (void *) 0, \
+ (void *) 0}
HB_EXTERN hb_bool_t
hb_segment_properties_equal (const hb_segment_properties_t *a,
const hb_segment_properties_t *b);
@@ -161,10 +174,11 @@
HB_EXTERN void *
hb_buffer_get_user_data (hb_buffer_t *buffer,
hb_user_data_key_t *key);
+
/**
* hb_buffer_content_type_t:
* @HB_BUFFER_CONTENT_TYPE_INVALID: Initial value for new buffer.
* @HB_BUFFER_CONTENT_TYPE_UNICODE: The buffer contains input characters (before shaping).
* @HB_BUFFER_CONTENT_TYPE_GLYPHS: The buffer contains output glyphs (after shaping).
@@ -357,10 +371,15 @@
const hb_codepoint_t *text,
int text_length,
unsigned int item_offset,
int item_length);
+HB_EXTERN void
+hb_buffer_append (hb_buffer_t *buffer,
+ hb_buffer_t *source,
+ unsigned int start,
+ unsigned int end);
HB_EXTERN hb_bool_t
hb_buffer_set_length (hb_buffer_t *buffer,
unsigned int length);
@@ -401,11 +420,12 @@
typedef enum { /*< flags >*/
HB_BUFFER_SERIALIZE_FLAG_DEFAULT = 0x00000000u,
HB_BUFFER_SERIALIZE_FLAG_NO_CLUSTERS = 0x00000001u,
HB_BUFFER_SERIALIZE_FLAG_NO_POSITIONS = 0x00000002u,
HB_BUFFER_SERIALIZE_FLAG_NO_GLYPH_NAMES = 0x00000004u,
- HB_BUFFER_SERIALIZE_FLAG_GLYPH_EXTENTS = 0x00000008u
+ HB_BUFFER_SERIALIZE_FLAG_GLYPH_EXTENTS = 0x00000008u,
+ HB_BUFFER_SERIALIZE_FLAG_GLYPH_FLAGS = 0x00000010u
} hb_buffer_serialize_flags_t;
/**
* hb_buffer_serialize_format_t:
* @HB_BUFFER_SERIALIZE_FORMAT_TEXT: a human-readable, plain text format.
@@ -451,10 +471,49 @@
hb_font_t *font,
hb_buffer_serialize_format_t format);
/*
+ * Compare buffers
+ */
+
+typedef enum { /*< flags >*/
+ HB_BUFFER_DIFF_FLAG_EQUAL = 0x0000,
+
+ /* Buffers with different content_type cannot be meaningfully compared
+ * in any further detail. */
+ HB_BUFFER_DIFF_FLAG_CONTENT_TYPE_MISMATCH = 0x0001,
+
+ /* For buffers with differing length, the per-glyph comparison is not
+ * attempted, though we do still scan reference for dottedcircle / .notdef
+ * glyphs. */
+ HB_BUFFER_DIFF_FLAG_LENGTH_MISMATCH = 0x0002,
+
+ /* We want to know if dottedcircle / .notdef glyphs are present in the
+ * reference, as we may not care so much about other differences in this
+ * case. */
+ HB_BUFFER_DIFF_FLAG_NOTDEF_PRESENT = 0x0004,
+ HB_BUFFER_DIFF_FLAG_DOTTED_CIRCLE_PRESENT = 0x0008,
+
+ /* If the buffers have the same length, we compare them glyph-by-glyph
+ * and report which aspect(s) of the glyph info/position are different. */
+ HB_BUFFER_DIFF_FLAG_CODEPOINT_MISMATCH = 0x0010,
+ HB_BUFFER_DIFF_FLAG_CLUSTER_MISMATCH = 0x0020,
+ HB_BUFFER_DIFF_FLAG_GLYPH_FLAGS_MISMATCH = 0x0040,
+ HB_BUFFER_DIFF_FLAG_POSITION_MISMATCH = 0x0080
+
+} hb_buffer_diff_flags_t;
+
+/* Compare the contents of two buffers, report types of differences. */
+HB_EXTERN hb_buffer_diff_flags_t
+hb_buffer_diff (hb_buffer_t *buffer,
+ hb_buffer_t *reference,
+ hb_codepoint_t dottedcircle_glyph,
+ unsigned int position_fuzz);
+
+
+/*
* Debugging.
*/
typedef hb_bool_t (*hb_buffer_message_func_t) (hb_buffer_t *buffer,
hb_font_t *font,
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