/*
- * Copyright (C) 1998-2004 David Turner and Werner Lemberg
- * Copyright (C) 2004,2007,2009,2010 Red Hat, Inc.
+ * Copyright © 1998-2004 David Turner and Werner Lemberg
+ * Copyright © 2004,2007,2009,2010 Red Hat, Inc.
*
- * This is part of HarfBuzz, a text shaping library.
+ * This is part of HarfBuzz, a text shaping library.
*
* Permission is hereby granted, without written agreement and without
* license or royalty fees, to use, copy, modify, and distribute this
* Red Hat Author(s): Owen Taylor, Behdad Esfahbod
*/
-#ifndef HB_BUFFER_PRIVATE_H
-#define HB_BUFFER_PRIVATE_H
+#ifndef HB_BUFFER_PRIVATE_HH
+#define HB_BUFFER_PRIVATE_HH
-#include "hb-private.h"
+#include "hb-private.hh"
#include "hb-buffer.h"
-#include "hb-unicode-private.h"
+#include "hb-object-private.hh"
+#include "hb-unicode-private.hh"
HB_BEGIN_DECLS
-#define HB_BUFFER_GLYPH_PROPERTIES_UNKNOWN 0xFFFF
-
-
-typedef struct _hb_internal_glyph_info_t {
- hb_codepoint_t codepoint;
- hb_mask_t mask;
- uint32_t cluster;
- uint16_t component;
- uint16_t lig_id;
- uint32_t gproperty;
-} hb_internal_glyph_info_t;
-
-typedef struct _hb_internal_glyph_position_t {
- hb_position_t x_advance;
- hb_position_t y_advance;
- hb_position_t x_offset;
- hb_position_t y_offset;
- uint32_t back : 16; /* number of glyphs to go back
- for drawing current glyph */
- int32_t cursive_chain : 16; /* character to which this connects,
- may be positive or negative */
-} hb_internal_glyph_position_t;
-
-ASSERT_STATIC (sizeof (hb_glyph_info_t) == sizeof (hb_internal_glyph_info_t));
-ASSERT_STATIC (sizeof (hb_glyph_position_t) == sizeof (hb_internal_glyph_position_t));
+
+ASSERT_STATIC (sizeof (hb_glyph_info_t) == 20);
ASSERT_STATIC (sizeof (hb_glyph_info_t) == sizeof (hb_glyph_position_t));
+typedef struct _hb_segment_properties_t {
+ hb_direction_t direction;
+ hb_script_t script;
+ hb_language_t language;
+} hb_segment_properties_t;
+
HB_INTERNAL void
_hb_buffer_swap (hb_buffer_t *buffer);
_hb_buffer_clear_output (hb_buffer_t *buffer);
HB_INTERNAL void
-_hb_buffer_add_output_glyphs (hb_buffer_t *buffer,
- unsigned int num_in,
- unsigned int num_out,
- const hb_codepoint_t *glyph_data,
- unsigned short component,
- unsigned short ligID);
+_hb_buffer_clear_positions (hb_buffer_t *buffer);
HB_INTERNAL void
-_hb_buffer_add_output_glyphs_be16 (hb_buffer_t *buffer,
- unsigned int num_in,
- unsigned int num_out,
- const uint16_t *glyph_data_be,
- unsigned short component,
- unsigned short ligID);
+_hb_buffer_replace_glyphs_be16 (hb_buffer_t *buffer,
+ unsigned int num_in,
+ unsigned int num_out,
+ const uint16_t *glyph_data_be);
HB_INTERNAL void
-_hb_buffer_add_output_glyph (hb_buffer_t *buffer,
- hb_codepoint_t glyph_index,
- unsigned short component,
- unsigned short ligID);
+_hb_buffer_replace_glyph (hb_buffer_t *buffer,
+ hb_codepoint_t glyph_index);
HB_INTERNAL void
_hb_buffer_next_glyph (hb_buffer_t *buffer);
HB_INTERNAL void
-_hb_buffer_clear_masks (hb_buffer_t *buffer);
+_hb_buffer_reset_masks (hb_buffer_t *buffer,
+ hb_mask_t mask);
+
+HB_INTERNAL void
+_hb_buffer_add_masks (hb_buffer_t *buffer,
+ hb_mask_t mask);
HB_INTERNAL void
_hb_buffer_set_masks (hb_buffer_t *buffer,
struct _hb_buffer_t {
- hb_reference_count_t ref_count;
+ hb_object_header_t header;
/* Information about how the text in the buffer should be treated */
- hb_unicode_funcs_t *unicode;
- hb_direction_t direction;
- hb_script_t script;
- hb_language_t language;
- /* Buffer contents */
+ hb_unicode_funcs_t *unicode; /* Unicode functions */
+ hb_segment_properties_t props; /* Script, language, direction */
- unsigned int allocated; /* Length of allocated arrays */
+ /* Buffer contents */
- hb_bool_t have_output; /* Whether we have an output buffer going on */
- hb_bool_t have_positions; /* Whether we have positions */
- hb_bool_t in_error; /* Allocation failed */
+ bool in_error; /* Allocation failed */
+ bool have_output; /* Whether we have an output buffer going on */
+ bool have_positions; /* Whether we have positions */
unsigned int i; /* Cursor into ->info and ->pos arrays */
unsigned int len; /* Length of ->info and ->pos arrays */
- unsigned int out_len; /* Length of ->out array */
-
- hb_internal_glyph_info_t *info;
- hb_internal_glyph_info_t *out_info;
- hb_internal_glyph_position_t *pos;
+ unsigned int out_len; /* Length of ->out array if have_output */
- /* Other stuff */
+ unsigned int serial;
- unsigned int max_lig_id;
+ unsigned int allocated; /* Length of allocated arrays */
+ hb_glyph_info_t *info;
+ hb_glyph_info_t *out_info;
+ hb_glyph_position_t *pos;
/* Methods */
- inline unsigned int allocate_lig_id (void) { return max_lig_id++; }
+ inline unsigned int backtrack_len (void) const
+ { return this->have_output? this->out_len : this->i; }
+ inline unsigned int next_serial (void) { return serial++; }
inline void swap (void) { _hb_buffer_swap (this); }
inline void clear_output (void) { _hb_buffer_clear_output (this); }
+ inline void clear_positions (void) { _hb_buffer_clear_positions (this); }
inline void next_glyph (void) { _hb_buffer_next_glyph (this); }
- inline void add_output_glyphs (unsigned int num_in,
- unsigned int num_out,
- const hb_codepoint_t *glyph_data,
- unsigned short component,
- unsigned short ligID)
- { _hb_buffer_add_output_glyphs (this, num_in, num_out, glyph_data, component, ligID); }
- inline void add_output_glyphs_be16 (unsigned int num_in,
- unsigned int num_out,
- const uint16_t *glyph_data_be,
- unsigned short component,
- unsigned short ligID)
- { _hb_buffer_add_output_glyphs_be16 (this, num_in, num_out, glyph_data_be, component, ligID); }
- inline void add_output_glyph (hb_codepoint_t glyph_index,
- unsigned short component = 0xFFFF,
- unsigned short ligID = 0xFFFF)
- { _hb_buffer_add_output_glyph (this, glyph_index, component, ligID); }
- inline void replace_glyph (hb_codepoint_t glyph_index) { add_output_glyph (glyph_index); }
-
- inline void clear_masks (void) { _hb_buffer_clear_masks (this); }
- inline void set_masks (hb_mask_t value,
+ inline void replace_glyphs_be16 (unsigned int num_in,
+ unsigned int num_out,
+ const uint16_t *glyph_data_be)
+ { _hb_buffer_replace_glyphs_be16 (this, num_in, num_out, glyph_data_be); }
+ inline void replace_glyph (hb_codepoint_t glyph_index)
+ { _hb_buffer_replace_glyph (this, glyph_index); }
+
+ inline void reset_masks (hb_mask_t mask)
+ {
+ for (unsigned int j = 0; j < len; j++)
+ info[j].mask = mask;
+ }
+ inline void add_masks (hb_mask_t mask)
+ {
+ for (unsigned int j = 0; j < len; j++)
+ info[j].mask |= mask;
+ }
+ inline void set_masks (hb_mask_t value,
hb_mask_t mask,
unsigned int cluster_start,
unsigned int cluster_end)
{ _hb_buffer_set_masks (this, value, mask, cluster_start, cluster_end); }
-
};
HB_END_DECLS
-#endif /* HB_BUFFER_PRIVATE_H */
+#endif /* HB_BUFFER_PRIVATE_HH */
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