/*
* Copyright (C) 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
#define HB_FONT_H
#include "hb-common.h"
+#include "hb-blob.h"
HB_BEGIN_DECLS
+typedef struct _hb_face_t hb_face_t;
+typedef struct _hb_font_t hb_font_t;
+
/*
- * hb_font_callbacks_t
+ * hb_face_t
*/
-hb_font_callbacks_t *
-hb_font_callbacks_create (void);
-
-hb_font_callbacks_t *
-hb_font_callbacks_reference (hb_font_callbacks_t *fcallbacks);
-
-unsigned int
-hb_font_callbacks_get_reference_count (hb_font_callbacks_t *fcallbacks);
-
-void
-hb_font_callbacks_destroy (hb_font_callbacks_t *fcallbacks);
-
-hb_font_callbacks_t *
-hb_font_callbacks_duplicate (hb_font_callbacks_t *fcallbacks);
+hb_face_t *
+hb_face_create_for_data (hb_blob_t *blob,
+ unsigned int index);
-/*
+typedef hb_blob_t * (*hb_get_table_func_t) (hb_tag_t tag, void *user_data);
-void
-hb_font_callbacks_set_glyph_func (hb_font_callbacks_t *fcallbacks,
- hb_font_get_glyph_func_t glyph_func);
+/* calls destroy() 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);
-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_t *
+hb_face_reference (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);
+unsigned int
+hb_face_get_reference_count (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_face_destroy (hb_face_t *face);
-*/
+hb_blob_t *
+hb_face_get_table (hb_face_t *face,
+ hb_tag_t tag);
/*
- * 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);
+
+hb_font_funcs_t *
+hb_font_funcs_reference (hb_font_funcs_t *ffuncs);
unsigned int
-hb_unicode_callbacks_get_reference_count (hb_unicode_callbacks_t *ucallbacks);
+hb_font_funcs_get_reference_count (hb_font_funcs_t *ffuncs);
void
-hb_unicode_callbacks_destroy (hb_unicode_callbacks_t *ucallbacks);
-
-hb_unicode_callbacks_t *
-hb_unicode_callbacks_duplicate (hb_unicode_callbacks_t *ucallbacks);
+hb_font_funcs_destroy (hb_font_funcs_t *ffuncs);
-/*
-
-void
-hb_unicode_callbacks_set_general_category_func (hb_unicode_callbacks_t *ucallbacks,
- hb_unicode_get_general_category_func_t general_category_func);
+hb_font_funcs_t *
+hb_font_funcs_copy (hb_font_funcs_t *ffuncs);
void
-hb_unicode_callbacks_set_combining_class_func (hb_unicode_callbacks_t *ucallbacks,
- hb_unicode_get_combining_class_func_t combining_class_func);
+hb_font_funcs_make_immutable (hb_font_funcs_t *ffuncs);
-void
-hb_unicode_callbacks_set_mirroring_char_func (hb_unicode_callbacks_t *ucallbacks,
- hb_unicode_get_mirroring_char_func_t mirroring_char_func);
-void
-hb_unicode_callbacks_set_script_func (hb_unicode_callbacks_t *ucallbacks,
- hb_unicode_get_script_func_t script_func);
+/* funcs */
-void
-hb_unicode_callbacks_set_eastasian_width_func (hb_unicode_callbacks_t *ucallbacks,
- hb_unicode_get_eastasian_width_func_t eastasian_width_func);
+typedef struct _hb_glyph_metrics_t
+{
+ hb_position_t x_advance;
+ hb_position_t y_advance;
+ hb_position_t x_offset;
+ hb_position_t y_offset;
+ hb_position_t width;
+ hb_position_t height;
+} hb_glyph_metrics_t;
-*/
+typedef hb_codepoint_t (*hb_font_get_glyph_func_t) (hb_font_t *font, hb_face_t *face, const void *user_data,
+ hb_codepoint_t unicode, hb_codepoint_t variation_selector);
+typedef hb_bool_t (*hb_font_get_contour_point_func_t) (hb_font_t *font, hb_face_t *face, const void *user_data,
+ unsigned int point_index,
+ hb_codepoint_t glyph, hb_position_t *x, hb_position_t *y);
+typedef void (*hb_font_get_glyph_metrics_func_t) (hb_font_t *font, hb_face_t *face, const void *user_data,
+ hb_codepoint_t glyph, hb_glyph_metrics_t *metrics);
+typedef hb_position_t (*hb_font_get_kerning_func_t) (hb_font_t *font, hb_face_t *face, const void *user_data,
+ hb_codepoint_t first_glyph, hb_codepoint_t second_glyph);
-/*
- * hb_face_t
- */
+void
+hb_font_funcs_set_glyph_func (hb_font_funcs_t *ffuncs,
+ hb_font_get_glyph_func_t glyph_func);
-hb_face_t *
-hb_face_create_for_data (hb_blob_t *blob,
- unsigned int index);
+void
+hb_font_funcs_set_contour_point_func (hb_font_funcs_t *ffuncs,
+ hb_font_get_contour_point_func_t contour_point_func);
-/* 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);
+void
+hb_font_funcs_set_glyph_metrics_func (hb_font_funcs_t *ffuncs,
+ hb_font_get_glyph_metrics_func_t glyph_metrics_func);
-hb_face_t *
-hb_face_reference (hb_face_t *face);
+void
+hb_font_funcs_set_kerning_func (hb_font_funcs_t *ffuncs,
+ hb_font_get_kerning_func_t kerning_func);
-unsigned int
-hb_face_get_reference_count (hb_face_t *face);
-void
-hb_face_destroy (hb_face_t *face);
+hb_codepoint_t
+hb_font_get_glyph (hb_font_t *font, hb_face_t *face,
+ hb_codepoint_t unicode, hb_codepoint_t variation_selector);
-void
-hb_face_set_font_callbacks (hb_face_t *face,
- hb_font_callbacks_t *fcallbacks);
+hb_bool_t
+hb_font_get_contour_point (hb_font_t *font, hb_face_t *face,
+ unsigned int point_index,
+ hb_codepoint_t glyph, hb_position_t *x, hb_position_t *y);
void
-hb_face_set_unicode_callbacks (hb_face_t *face,
- hb_unicode_callbacks_t *ucallbacks);
+hb_font_get_glyph_metrics (hb_font_t *font, hb_face_t *face,
+ hb_codepoint_t glyph, hb_glyph_metrics_t *metrics);
+hb_position_t
+hb_font_get_kerning (hb_font_t *font, hb_face_t *face,
+ hb_codepoint_t first_glyph, hb_codepoint_t second_glyph);
/*
/* Fonts are very light-weight objects */
hb_font_t *
-hb_font_create (hb_face_t *face);
+hb_font_create (void);
hb_font_t *
hb_font_reference (hb_font_t *font);
void
hb_font_destroy (hb_font_t *font);
+void
+hb_font_set_funcs (hb_font_t *font,
+ hb_font_funcs_t *klass,
+ hb_destroy_func_t destroy,
+ void *user_data);
+
+hb_font_funcs_t *
+hb_font_get_funcs (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.
+ * We should add support for full matrices.
*/
void
hb_font_set_scale (hb_font_t *font,
- hb_16dot16_t x_scale,
- hb_16dot16_t y_scale);
+ unsigned int x_scale,
+ unsigned int y_scale);
/*
* A zero value means "no hinting in that direction"