/*
- * Copyright (C) 2009 Red Hat, Inc.
+ * Copyright © 2009 Red Hat, Inc.
*
- * This is part of HarfBuzz, an OpenType Layout engine 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
HB_BEGIN_DECLS
-typedef struct _hb_font_callbacks_t hb_font_callbacks_t;
-typedef struct _hb_unicode_callbacks_t hb_unicode_callbacks_t;
typedef struct _hb_face_t hb_face_t;
typedef struct _hb_font_t hb_font_t;
-typedef hb_blob_t * (*hb_get_table_func_t) (hb_tag_t tag, void *user_data);
-
-
/*
- * hb_font_callbacks_t
+ * hb_face_t
*/
-hb_font_callbacks_t *
-hb_font_callbacks_create (void);
+hb_face_t *
+hb_face_create (hb_blob_t *blob,
+ unsigned int index);
-hb_font_callbacks_t *
-hb_font_callbacks_reference (hb_font_callbacks_t *fcallbacks);
+typedef hb_blob_t * (*hb_get_table_func_t) (hb_face_t *face, hb_tag_t tag, void *user_data);
-unsigned int
-hb_font_callbacks_get_reference_count (hb_font_callbacks_t *fcallbacks);
+/* calls destroy() when not needing user_data anymore */
+hb_face_t *
+hb_face_create_for_tables (hb_get_table_func_t get_table,
+ void *user_data,
+ hb_destroy_func_t destroy);
+
+hb_face_t *
+hb_face_get_empty (void);
+
+hb_face_t *
+hb_face_reference (hb_face_t *face);
void
-hb_font_callbacks_destroy (hb_font_callbacks_t *fcallbacks);
+hb_face_destroy (hb_face_t *face);
-hb_font_callbacks_t *
-hb_font_callbacks_copy (hb_font_callbacks_t *fcallbacks);
+hb_bool_t
+hb_face_set_user_data (hb_face_t *face,
+ hb_user_data_key_t *key,
+ void * data,
+ hb_destroy_func_t destroy);
-/*
-void
-hb_font_callbacks_set_glyph_func (hb_font_callbacks_t *fcallbacks,
- hb_font_get_glyph_func_t glyph_func);
+void *
+hb_face_get_user_data (hb_face_t *face,
+ hb_user_data_key_t *key);
void
-hb_font_callbacks_set_contour_point_func (hb_font_callbacks_t *fcallbacks,
- hb_font_get_contour_point_func_t contour_point_func);
+hb_face_make_immutable (hb_face_t *face);
-void
-hb_font_callbacks_set_glyph_metrics_func (hb_font_callbacks_t *fcallbacks,
- hb_font_get_glyph_metrics_func_t glyph_metrics_func);
+hb_bool_t
+hb_face_is_immutable (hb_face_t *face);
-void
-hb_font_callbacks_set_kerning_func (hb_font_callbacks_t *fcallbacks,
- hb_font_get_kerning_func_t kerning_func);
-*/
+hb_blob_t *
+hb_face_reference_table (hb_face_t *face,
+ hb_tag_t tag);
+
+unsigned int
+hb_face_get_upem (hb_face_t *face);
/*
- * hb_unicode_callbacks_t
+ * hb_font_funcs_t
*/
-hb_unicode_callbacks_t *
-hb_unicode_callbacks_create (void);
+typedef struct _hb_font_funcs_t hb_font_funcs_t;
-hb_unicode_callbacks_t *
-hb_unicode_callbacks_reference (hb_unicode_callbacks_t *ucallbacks);
+hb_font_funcs_t *
+hb_font_funcs_create (void);
-unsigned int
-hb_unicode_callbacks_get_reference_count (hb_unicode_callbacks_t *ucallbacks);
+hb_font_funcs_t *
+hb_font_funcs_get_empty (void);
+
+hb_font_funcs_t *
+hb_font_funcs_reference (hb_font_funcs_t *ffuncs);
void
-hb_unicode_callbacks_destroy (hb_unicode_callbacks_t *ucallbacks);
+hb_font_funcs_destroy (hb_font_funcs_t *ffuncs);
-hb_unicode_callbacks_t *
-hb_unicode_callbacks_copy (hb_unicode_callbacks_t *ucallbacks);
+hb_bool_t
+hb_font_funcs_set_user_data (hb_font_funcs_t *ffuncs,
+ hb_user_data_key_t *key,
+ void * data,
+ hb_destroy_func_t destroy);
-/*
-void
-hb_unicode_callbacks_set_general_category_func (hb_unicode_callbacks_t *ucallbacks,
- hb_unicode_get_general_category_func_t general_category_func);
+void *
+hb_font_funcs_get_user_data (hb_font_funcs_t *ffuncs,
+ hb_user_data_key_t *key);
-void
-hb_unicode_callbacks_set_combining_class_func (hb_unicode_callbacks_t *ucallbacks,
- hb_unicode_get_combining_class_func_t combining_class_func);
void
-hb_unicode_callbacks_set_mirroring_char_func (hb_unicode_callbacks_t *ucallbacks,
- hb_unicode_get_mirroring_char_func_t mirroring_char_func);
+hb_font_funcs_make_immutable (hb_font_funcs_t *ffuncs);
-void
-hb_unicode_callbacks_set_script_func (hb_unicode_callbacks_t *ucallbacks,
- hb_unicode_get_script_func_t script_func);
+hb_bool_t
+hb_font_funcs_is_immutable (hb_font_funcs_t *ffuncs);
-void
-hb_unicode_callbacks_set_eastasian_width_func (hb_unicode_callbacks_t *ucallbacks,
- hb_unicode_get_eastasian_width_func_t eastasian_width_func);
+/* funcs */
-*/
+typedef struct _hb_glyph_extents_t
+{
+ hb_position_t x_bearing;
+ hb_position_t y_bearing;
+ hb_position_t width;
+ hb_position_t height;
+} hb_glyph_extents_t;
-/*
- * hb_face_t
- */
+/* func types */
-hb_face_t *
-hb_face_create_for_data (hb_blob_t *blob,
- unsigned int index);
+typedef hb_bool_t (*hb_font_get_glyph_func_t) (hb_font_t *font, void *font_data,
+ hb_codepoint_t unicode, hb_codepoint_t variation_selector,
+ hb_codepoint_t *glyph,
+ void *user_data);
-/* calls destory() when not needing user_data anymore */
-hb_face_t *
-hb_face_create_for_tables (hb_get_table_func_t get_table,
- hb_destroy_func_t destroy,
- void *user_data);
-hb_face_t *
-hb_face_reference (hb_face_t *face);
+typedef hb_position_t (*hb_font_get_glyph_advance_func_t) (hb_font_t *font, void *font_data,
+ hb_codepoint_t glyph,
+ void *user_data);
+typedef hb_font_get_glyph_advance_func_t hb_font_get_glyph_h_advance_func_t;
+typedef hb_font_get_glyph_advance_func_t hb_font_get_glyph_v_advance_func_t;
-unsigned int
-hb_face_get_reference_count (hb_face_t *face);
+typedef hb_bool_t (*hb_font_get_glyph_origin_func_t) (hb_font_t *font, void *font_data,
+ hb_codepoint_t glyph,
+ hb_position_t *x, hb_position_t *y,
+ void *user_data);
+typedef hb_font_get_glyph_origin_func_t hb_font_get_glyph_h_origin_func_t;
+typedef hb_font_get_glyph_origin_func_t hb_font_get_glyph_v_origin_func_t;
+
+typedef hb_position_t (*hb_font_get_glyph_kerning_func_t) (hb_font_t *font, void *font_data,
+ hb_codepoint_t first_glyph, hb_codepoint_t second_glyph,
+ void *user_data);
+typedef hb_font_get_glyph_kerning_func_t hb_font_get_glyph_h_kerning_func_t;
+typedef hb_font_get_glyph_kerning_func_t hb_font_get_glyph_v_kerning_func_t;
+
+
+typedef hb_bool_t (*hb_font_get_glyph_extents_func_t) (hb_font_t *font, void *font_data,
+ hb_codepoint_t glyph,
+ hb_glyph_extents_t *extents,
+ void *user_data);
+typedef hb_bool_t (*hb_font_get_glyph_contour_point_func_t) (hb_font_t *font, void *font_data,
+ hb_codepoint_t glyph, unsigned int point_index,
+ hb_position_t *x, hb_position_t *y,
+ void *user_data);
+
+
+/* func setters */
void
-hb_face_destroy (hb_face_t *face);
+hb_font_funcs_set_glyph_func (hb_font_funcs_t *ffuncs,
+ hb_font_get_glyph_func_t glyph_func,
+ void *user_data, hb_destroy_func_t destroy);
void
-hb_face_set_font_callbacks (hb_face_t *face,
- hb_font_callbacks_t *fcallbacks);
+hb_font_funcs_set_glyph_h_advance_func (hb_font_funcs_t *ffuncs,
+ hb_font_get_glyph_h_advance_func_t func,
+ void *user_data, hb_destroy_func_t destroy);
+void
+hb_font_funcs_set_glyph_v_advance_func (hb_font_funcs_t *ffuncs,
+ hb_font_get_glyph_v_advance_func_t func,
+ void *user_data, hb_destroy_func_t destroy);
void
-hb_face_set_unicode_callbacks (hb_face_t *face,
- hb_unicode_callbacks_t *ucallbacks);
+hb_font_funcs_set_glyph_h_origin_func (hb_font_funcs_t *ffuncs,
+ hb_font_get_glyph_h_origin_func_t func,
+ void *user_data, hb_destroy_func_t destroy);
+void
+hb_font_funcs_set_glyph_v_origin_func (hb_font_funcs_t *ffuncs,
+ hb_font_get_glyph_v_origin_func_t func,
+ void *user_data, hb_destroy_func_t destroy);
+void
+hb_font_funcs_set_glyph_h_kerning_func (hb_font_funcs_t *ffuncs,
+ hb_font_get_glyph_h_kerning_func_t func,
+ void *user_data, hb_destroy_func_t destroy);
+void
+hb_font_funcs_set_glyph_v_kerning_func (hb_font_funcs_t *ffuncs,
+ hb_font_get_glyph_v_kerning_func_t func,
+ void *user_data, hb_destroy_func_t destroy);
+
+void
+hb_font_funcs_set_glyph_extents_func (hb_font_funcs_t *ffuncs,
+ hb_font_get_glyph_extents_func_t func,
+ void *user_data, hb_destroy_func_t destroy);
+void
+hb_font_funcs_set_glyph_contour_point_func (hb_font_funcs_t *ffuncs,
+ hb_font_get_glyph_contour_point_func_t func,
+ void *user_data, hb_destroy_func_t destroy);
+
+
+/* func dispatch */
+
+hb_bool_t
+hb_font_get_glyph (hb_font_t *font,
+ hb_codepoint_t unicode, hb_codepoint_t variation_selector,
+ hb_codepoint_t *glyph);
+
+hb_position_t
+hb_font_get_glyph_h_advance (hb_font_t *font,
+ hb_codepoint_t glyph);
+hb_position_t
+hb_font_get_glyph_v_advance (hb_font_t *font,
+ hb_codepoint_t glyph);
+
+hb_bool_t
+hb_font_get_glyph_h_origin (hb_font_t *font,
+ hb_codepoint_t glyph,
+ hb_position_t *x, hb_position_t *y);
+hb_bool_t
+hb_font_get_glyph_v_origin (hb_font_t *font,
+ hb_codepoint_t glyph,
+ hb_position_t *x, hb_position_t *y);
+
+hb_position_t
+hb_font_get_glyph_h_kerning (hb_font_t *font,
+ hb_codepoint_t left_glyph, hb_codepoint_t right_glyph);
+hb_position_t
+hb_font_get_glyph_v_kerning (hb_font_t *font,
+ hb_codepoint_t top_glyph, hb_codepoint_t bottom_glyph);
+
+hb_bool_t
+hb_font_get_glyph_extents (hb_font_t *font,
+ hb_codepoint_t glyph,
+ hb_glyph_extents_t *extents);
+
+hb_bool_t
+hb_font_get_glyph_contour_point (hb_font_t *font,
+ hb_codepoint_t glyph, unsigned int point_index,
+ hb_position_t *x, hb_position_t *y);
+
+
+/* high-level funcs, with fallback */
+
+void
+hb_font_get_glyph_advance_for_direction (hb_font_t *font,
+ hb_codepoint_t glyph,
+ hb_direction_t direction,
+ hb_position_t *x, hb_position_t *y);
+void
+hb_font_get_glyph_origin_for_direction (hb_font_t *font,
+ hb_codepoint_t glyph,
+ hb_direction_t direction,
+ hb_position_t *x, hb_position_t *y);
+void
+hb_font_add_glyph_origin_for_direction (hb_font_t *font,
+ hb_codepoint_t glyph,
+ hb_direction_t direction,
+ hb_position_t *x, hb_position_t *y);
+void
+hb_font_subtract_glyph_origin_for_direction (hb_font_t *font,
+ hb_codepoint_t glyph,
+ hb_direction_t direction,
+ hb_position_t *x, hb_position_t *y);
+
+void
+hb_font_get_glyph_kerning_for_direction (hb_font_t *font,
+ hb_codepoint_t first_glyph, hb_codepoint_t second_glyph,
+ hb_direction_t direction,
+ hb_position_t *x, hb_position_t *y);
+
+hb_bool_t
+hb_font_get_glyph_extents_for_origin (hb_font_t *font,
+ hb_codepoint_t glyph,
+ hb_direction_t direction,
+ hb_glyph_extents_t *extents);
+
+hb_bool_t
+hb_font_get_glyph_contour_point_for_origin (hb_font_t *font,
+ hb_codepoint_t glyph, unsigned int point_index,
+ hb_direction_t direction,
+ hb_position_t *x, hb_position_t *y);
/*
hb_font_create (hb_face_t *face);
hb_font_t *
-hb_font_reference (hb_font_t *font);
+hb_font_create_sub_font (hb_font_t *parent);
-unsigned int
-hb_font_get_reference_count (hb_font_t *font);
+hb_font_t *
+hb_font_get_empty (void);
+
+hb_font_t *
+hb_font_reference (hb_font_t *font);
void
hb_font_destroy (hb_font_t *font);
+hb_bool_t
+hb_font_set_user_data (hb_font_t *font,
+ hb_user_data_key_t *key,
+ void * data,
+ hb_destroy_func_t destroy);
+
+
+void *
+hb_font_get_user_data (hb_font_t *font,
+ hb_user_data_key_t *key);
+
+void
+hb_font_make_immutable (hb_font_t *font);
+
+hb_bool_t
+hb_font_is_immutable (hb_font_t *font);
+
+hb_font_t *
+hb_font_get_parent (hb_font_t *font);
+
hb_face_t *
hb_font_get_face (hb_font_t *font);
-/*
- * XXX
- * should we decompose this to units_per_EM and font-size?
- * units_per_EM setting then can go into the face, or better,
- * read from the 'head' table.
- *
- * Then we either need size+shape like freetype does, or a full
- * matrix.
- */
+
+void
+hb_font_set_funcs (hb_font_t *font,
+ hb_font_funcs_t *klass,
+ void *font_data,
+ hb_destroy_func_t destroy);
+
+
void
hb_font_set_scale (hb_font_t *font,
- hb_16dot16_t x_scale,
- hb_16dot16_t y_scale);
+ int x_scale,
+ int y_scale);
+
+void
+hb_font_get_scale (hb_font_t *font,
+ int *x_scale,
+ int *y_scale);
/*
* A zero value means "no hinting in that direction"
unsigned int x_ppem,
unsigned int y_ppem);
+void
+hb_font_get_ppem (hb_font_t *font,
+ unsigned int *x_ppem,
+ unsigned int *y_ppem);
+
HB_END_DECLS
projects / framework / uifw / harfbuzz.git / blobdiff