diff --git a/src/hb-font.cc b/src/hb-font.cc index b414b2a01..322bdec35 100644 --- a/src/hb-font.cc +++ b/src/hb-font.cc @@ -46,9 +46,17 @@ * Functions for working with font objects. * * A font object represents a font face at a specific size and with - * certain other parameters (pixels-per-EM, points-per-EM, variation + * certain other parameters (pixels-per-em, points-per-em, variation * settings) specified. Font objects are created from font face * objects, and are used as input to hb_shape(), among other things. + * + * Client programs can optionally pass in their own functions that + * implement the basic, lower-level queries of font objects. This set + * of font functions is defined by the virtual methods in + * #hb_font_funcs_t. + * + * HarfBuzz provides a built-in set of lightweight default + * functions for each method in #hb_font_funcs_t. **/ @@ -65,6 +73,7 @@ hb_font_get_font_h_extents_nil (hb_font_t *font HB_UNUSED, memset (extents, 0, sizeof (*extents)); return false; } + static hb_bool_t hb_font_get_font_h_extents_default (hb_font_t *font, void *font_data HB_UNUSED, @@ -89,6 +98,7 @@ hb_font_get_font_v_extents_nil (hb_font_t *font HB_UNUSED, memset (extents, 0, sizeof (*extents)); return false; } + static hb_bool_t hb_font_get_font_v_extents_default (hb_font_t *font, void *font_data HB_UNUSED, @@ -114,6 +124,7 @@ hb_font_get_nominal_glyph_nil (hb_font_t *font HB_UNUSED, *glyph = 0; return false; } + static hb_bool_t hb_font_get_nominal_glyph_default (hb_font_t *font, void *font_data HB_UNUSED, @@ -129,6 +140,7 @@ hb_font_get_nominal_glyph_default (hb_font_t *font, } #define hb_font_get_nominal_glyphs_nil hb_font_get_nominal_glyphs_default + static unsigned int hb_font_get_nominal_glyphs_default (hb_font_t *font, void *font_data HB_UNUSED, @@ -168,6 +180,7 @@ hb_font_get_variation_glyph_nil (hb_font_t *font HB_UNUSED, *glyph = 0; return false; } + static hb_bool_t hb_font_get_variation_glyph_default (hb_font_t *font, void *font_data HB_UNUSED, @@ -188,6 +201,7 @@ hb_font_get_glyph_h_advance_nil (hb_font_t *font, { return font->x_scale; } + static hb_position_t hb_font_get_glyph_h_advance_default (hb_font_t *font, void *font_data HB_UNUSED, @@ -212,6 +226,7 @@ hb_font_get_glyph_v_advance_nil (hb_font_t *font, /* TODO use font_extents.ascender+descender */ return font->y_scale; } + static hb_position_t hb_font_get_glyph_v_advance_default (hb_font_t *font, void *font_data HB_UNUSED, @@ -228,6 +243,7 @@ hb_font_get_glyph_v_advance_default (hb_font_t *font, } #define hb_font_get_glyph_h_advances_nil hb_font_get_glyph_h_advances_default + static void hb_font_get_glyph_h_advances_default (hb_font_t* font, void* font_data HB_UNUSED, @@ -302,6 +318,7 @@ hb_font_get_glyph_h_origin_nil (hb_font_t *font HB_UNUSED, *x = *y = 0; return true; } + static hb_bool_t hb_font_get_glyph_h_origin_default (hb_font_t *font, void *font_data HB_UNUSED, @@ -327,6 +344,7 @@ hb_font_get_glyph_v_origin_nil (hb_font_t *font HB_UNUSED, *x = *y = 0; return false; } + static hb_bool_t hb_font_get_glyph_v_origin_default (hb_font_t *font, void *font_data HB_UNUSED, @@ -350,6 +368,7 @@ hb_font_get_glyph_h_kerning_nil (hb_font_t *font HB_UNUSED, { return 0; } + static hb_position_t hb_font_get_glyph_h_kerning_default (hb_font_t *font, void *font_data HB_UNUSED, @@ -370,6 +389,7 @@ hb_font_get_glyph_v_kerning_nil (hb_font_t *font HB_UNUSED, { return 0; } + static hb_position_t hb_font_get_glyph_v_kerning_default (hb_font_t *font, void *font_data HB_UNUSED, @@ -391,6 +411,7 @@ hb_font_get_glyph_extents_nil (hb_font_t *font HB_UNUSED, memset (extents, 0, sizeof (*extents)); return false; } + static hb_bool_t hb_font_get_glyph_extents_default (hb_font_t *font, void *font_data HB_UNUSED, @@ -418,6 +439,7 @@ hb_font_get_glyph_contour_point_nil (hb_font_t *font HB_UNUSED, *x = *y = 0; return false; } + static hb_bool_t hb_font_get_glyph_contour_point_default (hb_font_t *font, void *font_data HB_UNUSED, @@ -444,6 +466,7 @@ hb_font_get_glyph_name_nil (hb_font_t *font HB_UNUSED, if (size) *name = '\0'; return false; } + static hb_bool_t hb_font_get_glyph_name_default (hb_font_t *font, void *font_data HB_UNUSED, @@ -466,6 +489,7 @@ hb_font_get_glyph_from_name_nil (hb_font_t *font HB_UNUSED, *glyph = 0; return false; } + static hb_bool_t hb_font_get_glyph_from_name_default (hb_font_t *font, void *font_data HB_UNUSED, @@ -526,9 +550,9 @@ static const hb_font_funcs_t _hb_font_funcs_default = { /** * hb_font_funcs_create: (Xconstructor) * + * Creates a new #hb_font_funcs_t structure of font functions. * - * - * Return value: (transfer full): + * Return value: (transfer full): The font-functions structure * * Since: 0.9.2 **/ @@ -548,9 +572,9 @@ hb_font_funcs_create () /** * hb_font_funcs_get_empty: * + * Fetches an empty font-functions structure. * - * - * Return value: (transfer full): + * Return value: (transfer full): The font-functions structure * * Since: 0.9.2 **/ @@ -562,11 +586,11 @@ hb_font_funcs_get_empty () /** * hb_font_funcs_reference: (skip) - * @ffuncs: font functions. + * @ffuncs: The font-functions structure * + * Increases the reference count on a font-functions structure. * - * - * Return value: + * Return value: The font-functions structure * * Since: 0.9.2 **/ @@ -578,9 +602,11 @@ hb_font_funcs_reference (hb_font_funcs_t *ffuncs) /** * hb_font_funcs_destroy: (skip) - * @ffuncs: font functions. - * + * @ffuncs: The font-functions structure * + * Decreases the reference count on a font-functions structure. When + * the reference count reaches zero, the font-functions structure is + * destroyed, freeing all memory. * * Since: 0.9.2 **/ @@ -599,15 +625,15 @@ hb_font_funcs_destroy (hb_font_funcs_t *ffuncs) /** * hb_font_funcs_set_user_data: (skip) - * @ffuncs: font functions. - * @key: - * @data: - * @destroy: - * @replace: + * @ffuncs: The font-functions structure + * @key: The user-data key to set + * @data: A pointer to the user data set + * @destroy: (optional): A callback to call when @data is not needed anymore + * @replace: Whether to replace an existing data with the same key * + * Attaches a user-data key/data pair to the specified font-functions structure. * - * - * Return value: + * Return value: %true if success, false otherwise * * Since: 0.9.2 **/ @@ -615,7 +641,7 @@ 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, + hb_destroy_func_t destroy /* May be NULL. */, hb_bool_t replace) { return hb_object_set_user_data (ffuncs, key, data, destroy, replace); @@ -623,12 +649,13 @@ hb_font_funcs_set_user_data (hb_font_funcs_t *ffuncs, /** * hb_font_funcs_get_user_data: (skip) - * @ffuncs: font functions. - * @key: + * @ffuncs: The font-functions structure + * @key: The user-data key to query * + * Fetches the user data associated with the specified key, + * attached to the specified font-functions structure. * - * - * Return value: (transfer none): + * Return value: (transfer none): A pointer to the user data * * Since: 0.9.2 **/ @@ -642,9 +669,9 @@ hb_font_funcs_get_user_data (hb_font_funcs_t *ffuncs, /** * hb_font_funcs_make_immutable: - * @ffuncs: font functions. - * + * @ffuncs: The font-functions structure * + * Makes a font-functions structure immutable. * * Since: 0.9.2 **/ @@ -659,11 +686,11 @@ hb_font_funcs_make_immutable (hb_font_funcs_t *ffuncs) /** * hb_font_funcs_is_immutable: - * @ffuncs: font functions. + * @ffuncs: The font-functions structure * + * Tests whether a font-functions structure is immutable. * - * - * Return value: + * Return value: %true if @ffuncs is immutable, false otherwise * * Since: 0.9.2 **/ @@ -723,12 +750,13 @@ hb_font_t::has_func (unsigned int i) /** * hb_font_get_h_extents: - * @font: a font. - * @extents: (out): + * @font: #hb_font_t to work upon + * @extents: (out): The font extents retrieved * + * Fetches the extents for a specified font, in horizontal + * text segments. * - * - * Return value: + * Return value: %true if data found, false otherwise * * Since: 1.1.3 **/ @@ -741,12 +769,13 @@ hb_font_get_h_extents (hb_font_t *font, /** * hb_font_get_v_extents: - * @font: a font. - * @extents: (out): + * @font: #hb_font_t to work upon + * @extents: (out): The font extents retrieved * + * Fetches the extents for a specified font, in vertical + * text segments. * - * - * Return value: + * Return value: %true if data found, false otherwise * * Since: 1.1.3 **/ @@ -759,14 +788,20 @@ hb_font_get_v_extents (hb_font_t *font, /** * hb_font_get_glyph: - * @font: a font. - * @unicode: - * @variation_selector: - * @glyph: (out): + * @font: #hb_font_t to work upon + * @unicode: The Unicode code point to query + * @variation_selector: (optional): A variation-selector code point + * @glyph: (out): The glyph ID retrieved * + * Fetches the glyph ID for a Unicode code point in the specified + * font, with an optional variation selector. * + * This version of the function is higher-level and supports fallback behavior. + * + * If @variation_selector is 0, calls hb_font_get_nominal_glyph(); + * otherwise calls hb_font_get_variation_glyph(). * - * Return value: + * Return value: %true if data found, false otherwise * * Since: 0.9.2 **/ @@ -783,13 +818,18 @@ hb_font_get_glyph (hb_font_t *font, /** * hb_font_get_nominal_glyph: - * @font: a font. - * @unicode: - * @glyph: (out): + * @font: #hb_font_t to work upon + * @unicode: The Unicode code point to query + * @glyph: (out): The glyph ID retrieved * + * Fetches the nominal glyph ID for a Unicode code point in the + * specified font. * + * This version of the function should not be used to fetch glyph IDs + * for code points modified by variation selectors. For variation-selector + * support, user hb_font_get_variation_glyph() or use hb_font_get_glyph(). * - * Return value: + * Return value: %true if data found, false otherwise * * Since: 1.2.3 **/ @@ -826,14 +866,16 @@ hb_font_get_nominal_glyphs (hb_font_t *font, /** * hb_font_get_variation_glyph: - * @font: a font. - * @unicode: - * @variation_selector: - * @glyph: (out): + * @font: #hb_font_t to work upon + * @unicode: The Unicode code point to query + * @variation_selector: The variation-selector code point to query + * @glyph: (out): The glyph ID retrieved * + * Fetches the glyph ID for a Unicode code point when followed by + * by the specified variation-selector code point, in the specified + * font. * - * - * Return value: + * Return value: %true if data found, false otherwise * * Since: 1.2.3 **/ @@ -848,12 +890,13 @@ hb_font_get_variation_glyph (hb_font_t *font, /** * hb_font_get_glyph_h_advance: - * @font: a font. - * @glyph: + * @font: #hb_font_t to work upon + * @glyph: The glyph ID to query * + * Fetches the advance for a glyph ID in the specified font, + * for horizontal text segments. * - * - * Return value: + * Return value: The advance of @glyph within @font * * Since: 0.9.2 **/ @@ -866,12 +909,13 @@ hb_font_get_glyph_h_advance (hb_font_t *font, /** * hb_font_get_glyph_v_advance: - * @font: a font. - * @glyph: + * @font: #hb_font_t to work upon + * @glyph: The glyph ID to query * + * Fetches the advance for a glyph ID in the specified font, + * for vertical text segments. * - * - * Return value: + * Return value: The advance of @glyph within @font * * Since: 0.9.2 **/ @@ -884,9 +928,15 @@ hb_font_get_glyph_v_advance (hb_font_t *font, /** * hb_font_get_glyph_h_advances: - * @font: a font. - * + * @font: #hb_font_t to work upon + * @count: The number of glyph IDs in the sequence queried + * @first_glyph: The first glyph ID to query + * @glyph_stride: The stride between successive glyph IDs + * @first_advance: (out): The first advance retrieved + * @advance_stride: (out): The stride between successive advances * + * Fetches the advances for a sequence of glyph IDs in the specified + * font, for horizontal text segments. * * Since: 1.8.6 **/ @@ -902,9 +952,15 @@ hb_font_get_glyph_h_advances (hb_font_t* font, } /** * hb_font_get_glyph_v_advances: - * @font: a font. - * + * @font: #hb_font_t to work upon + * @count: The number of glyph IDs in the sequence queried + * @first_glyph: The first glyph ID to query + * @glyph_stride: The stride between successive glyph IDs + * @first_advance: (out): The first advance retrieved + * @advance_stride: (out): The stride between successive advances * + * Fetches the advances for a sequence of glyph IDs in the specified + * font, for vertical text segments. * * Since: 1.8.6 **/ @@ -921,14 +977,15 @@ hb_font_get_glyph_v_advances (hb_font_t* font, /** * hb_font_get_glyph_h_origin: - * @font: a font. - * @glyph: - * @x: (out): - * @y: (out): + * @font: #hb_font_t to work upon + * @glyph: The glyph ID to query + * @x: (out): The X coordinate of the origin + * @y: (out): The Y coordinate of the origin * + * Fetches the (X,Y) coordinates of the origin for a glyph ID + * in the specified font, for horizontal text segments. * - * - * Return value: + * Return value: %true if data found, false otherwise * * Since: 0.9.2 **/ @@ -943,14 +1000,15 @@ hb_font_get_glyph_h_origin (hb_font_t *font, /** * hb_font_get_glyph_v_origin: - * @font: a font. - * @glyph: - * @x: (out): - * @y: (out): + * @font: #hb_font_t to work upon + * @glyph: The glyph ID to query + * @x: (out): The X coordinate of the origin + * @y: (out): The Y coordinate of the origin * + * Fetches the (X,Y) coordinates of the origin for a glyph ID + * in the specified font, for vertical text segments. * - * - * Return value: + * Return value: %true if data found, false otherwise * * Since: 0.9.2 **/ @@ -965,13 +1023,14 @@ hb_font_get_glyph_v_origin (hb_font_t *font, /** * hb_font_get_glyph_h_kerning: - * @font: a font. - * @left_glyph: - * @right_glyph: + * @font: #hb_font_t to work upon + * @left_glyph: The glyph ID of the left glyph in the glyph pair + * @right_glyph: The glyph ID of the right glyph in the glyph pair * + * Fetches the kerning-adjustment value for a glyph-pair in + * the specified font, in horizontal text segments. * - * - * Return value: + * Return value: The kerning adjustment value * * Since: 0.9.2 **/ @@ -986,13 +1045,14 @@ hb_font_get_glyph_h_kerning (hb_font_t *font, #ifndef HB_DISABLE_DEPRECATED /** * hb_font_get_glyph_v_kerning: - * @font: a font. - * @top_glyph: - * @bottom_glyph: + * @font: #hb_font_t to work upon + * @top_glyph: The glyph ID of the top glyph in the glyph pair + * @bottom_glyph: The glyph ID of the bottom glyph in the glyph pair * + * Fetches the kerning-adjustment value for a glyph-pair in + * the specified font, in vertical text segments. * - * - * Return value: + * Return value: The kerning adjustment value * * Since: 0.9.2 * Deprecated: 2.0.0 @@ -1008,13 +1068,14 @@ hb_font_get_glyph_v_kerning (hb_font_t *font, /** * hb_font_get_glyph_extents: - * @font: a font. - * @glyph: - * @extents: (out): + * @font: #hb_font_t to work upon + * @glyph: The glyph ID to query + * @extents: (out): The #hb_glyph_extents_t retrieved * + * Fetches the #hb_glyph_extents_t data for a glyph ID + * in the specified font. * - * - * Return value: + * Return value: %true if data found, false otherwise * * Since: 0.9.2 **/ @@ -1028,15 +1089,16 @@ hb_font_get_glyph_extents (hb_font_t *font, /** * hb_font_get_glyph_contour_point: - * @font: a font. - * @glyph: - * @point_index: - * @x: (out): - * @y: (out): + * @font: #hb_font_t to work upon + * @glyph: The glyph ID to query + * @point_index: The contour-point index to query + * @x: (out): The X value retrieved for the contour point + * @y: (out): The Y value retrieved for the contour point * + * Fetches the (x,y) coordinates of a specified contour-point index + * in the specified glyph, within the specified font. * - * - * Return value: + * Return value: %true if data found, false otherwise * * Since: 0.9.2 **/ @@ -1052,14 +1114,14 @@ hb_font_get_glyph_contour_point (hb_font_t *font, /** * hb_font_get_glyph_name: - * @font: a font. - * @glyph: - * @name: (array length=size): - * @size: + * @font: #hb_font_t to work upon + * @glyph: The glyph ID to query + * @name: (out) (array length=size): Name string retrieved for the glyph ID + * @size: Length of the glyph-name string retrieved * + * Fetches the glyph-name string for a glyph ID in the specified @font. * - * - * Return value: + * Return value: %true if data found, zero otherwise * * Since: 0.9.2 **/ @@ -1074,14 +1136,16 @@ hb_font_get_glyph_name (hb_font_t *font, /** * hb_font_get_glyph_from_name: - * @font: a font. - * @name: (array length=len): - * @len: - * @glyph: (out): + * @font: #hb_font_t to work upon + * @name: (array length=len): The name string to query + * @len: The length of the name queried + * @glyph: (out): The glyph ID retrieved * + * Fetches the glyph ID that corresponds to a name string in the specified @font. * + * Note: @len == -1 means the name string is null-terminated. * - * Return value: + * Return value: %true if data found, false otherwise * * Since: 0.9.2 **/ @@ -1099,11 +1163,15 @@ hb_font_get_glyph_from_name (hb_font_t *font, /** * hb_font_get_extents_for_direction: - * @font: a font. - * @direction: - * @extents: (out): + * @font: #hb_font_t to work upon + * @direction: The direction of the text segment + * @extents: (out): The #hb_glyph_extents_t retrieved * + * Fetches the extents for a font in a text segment of the + * specified direction. * + * Calls the appropriate direction-specific variant (horizontal + * or vertical) depending on the value of @direction. * * Since: 1.1.3 **/ @@ -1116,13 +1184,17 @@ hb_font_get_extents_for_direction (hb_font_t *font, } /** * hb_font_get_glyph_advance_for_direction: - * @font: a font. - * @glyph: - * @direction: - * @x: (out): - * @y: (out): + * @font: #hb_font_t to work upon + * @glyph: The glyph ID to query + * @direction: The direction of the text segment + * @x: (out): The horizontal advance retrieved + * @y: (out): The vertical advance retrieved * + * Fetches the advance for a glyph ID from the specified font, + * in a text segment of the specified direction. * + * Calls the appropriate direction-specific variant (horizontal + * or vertical) depending on the value of @direction. * * Since: 0.9.2 **/ @@ -1137,10 +1209,19 @@ hb_font_get_glyph_advance_for_direction (hb_font_t *font, } /** * hb_font_get_glyph_advances_for_direction: - * @font: a font. - * @direction: + * @font: #hb_font_t to work upon + * @direction: The direction of the text segment + * @count: The number of glyph IDs in the sequence queried + * @first_glyph: The first glyph ID to query + * @glyph_stride: The stride between successive glyph IDs + * @first_advance: (out): The first advance retrieved + * @advance_stride: (out): The stride between successive advances * + * Fetches the advances for a sequence of glyph IDs in the specified + * font, in a text segment of the specified direction. * + * Calls the appropriate direction-specific variant (horizontal + * or vertical) depending on the value of @direction. * * Since: 1.8.6 **/ @@ -1158,13 +1239,17 @@ hb_font_get_glyph_advances_for_direction (hb_font_t* font, /** * hb_font_get_glyph_origin_for_direction: - * @font: a font. - * @glyph: - * @direction: - * @x: (out): - * @y: (out): + * @font: #hb_font_t to work upon + * @glyph: The glyph ID to query + * @direction: The direction of the text segment + * @x: (out): The X coordinate retrieved for the origin + * @y: (out): The Y coordinate retrieved for the origin * + * Fetches the (X,Y) coordinates of the origin for a glyph in + * the specified font. * + * Calls the appropriate direction-specific variant (horizontal + * or vertical) depending on the value of @direction. * * Since: 0.9.2 **/ @@ -1180,13 +1265,19 @@ hb_font_get_glyph_origin_for_direction (hb_font_t *font, /** * hb_font_add_glyph_origin_for_direction: - * @font: a font. - * @glyph: - * @direction: - * @x: (out): - * @y: (out): + * @font: #hb_font_t to work upon + * @glyph: The glyph ID to query + * @direction: The direction of the text segment + * @x: (inout): Input = The original X coordinate + * Output = The X coordinate plus the X-coordinate of the origin + * @y: (inout): Input = The original Y coordinate + * Output = The Y coordinate plus the Y-coordinate of the origin * + * Adds the origin coordinates to an (X,Y) point coordinate, in + * the specified glyph ID in the specified font. * + * Calls the appropriate direction-specific variant (horizontal + * or vertical) depending on the value of @direction. * * Since: 0.9.2 **/ @@ -1202,13 +1293,19 @@ hb_font_add_glyph_origin_for_direction (hb_font_t *font, /** * hb_font_subtract_glyph_origin_for_direction: - * @font: a font. - * @glyph: - * @direction: - * @x: (out): - * @y: (out): + * @font: #hb_font_t to work upon + * @glyph: The glyph ID to query + * @direction: The direction of the text segment + * @x: (inout): Input = The original X coordinate + * Output = The X coordinate minus the X-coordinate of the origin + * @y: (inout): Input = The original Y coordinate + * Output = The Y coordinate minus the Y-coordinate of the origin * + * Subtracts the origin coordinates from an (X,Y) point coordinate, + * in the specified glyph ID in the specified font. * + * Calls the appropriate direction-specific variant (horizontal + * or vertical) depending on the value of @direction. * * Since: 0.9.2 **/ @@ -1224,14 +1321,17 @@ hb_font_subtract_glyph_origin_for_direction (hb_font_t *font, /** * hb_font_get_glyph_kerning_for_direction: - * @font: a font. - * @first_glyph: - * @second_glyph: - * @direction: - * @x: (out): - * @y: (out): + * @font: #hb_font_t to work upon + * @first_glyph: The glyph ID of the first glyph in the glyph pair to query + * @second_glyph: The glyph ID of the second glyph in the glyph pair to query + * @direction: The direction of the text segment + * @x: (out): The horizontal kerning-adjustment value retrieved + * @y: (out): The vertical kerning-adjustment value retrieved * + * Fetches the kerning-adjustment value for a glyph-pair in the specified font. * + * Calls the appropriate direction-specific variant (horizontal + * or vertical) depending on the value of @direction. * * Since: 0.9.2 **/ @@ -1248,14 +1348,19 @@ hb_font_get_glyph_kerning_for_direction (hb_font_t *font, /** * hb_font_get_glyph_extents_for_origin: - * @font: a font. - * @glyph: - * @direction: - * @extents: (out): + * @font: #hb_font_t to work upon + * @glyph: The glyph ID to query + * @direction: The direction of the text segment + * @extents: (out): The #hb_glyph_extents_t retrieved * + * Fetches the #hb_glyph_extents_t data for a glyph ID + * in the specified font, with respect to the origin in + * a text segment in the specified direction. * + * Calls the appropriate direction-specific variant (horizontal + * or vertical) depending on the value of @direction. * - * Return value: + * Return value: %true if data found, false otherwise * * Since: 0.9.2 **/ @@ -1270,16 +1375,21 @@ hb_font_get_glyph_extents_for_origin (hb_font_t *font, /** * hb_font_get_glyph_contour_point_for_origin: - * @font: a font. - * @glyph: - * @point_index: - * @direction: - * @x: (out): - * @y: (out): + * @font: #hb_font_t to work upon + * @glyph: The glyph ID to query + * @point_index: The contour-point index to query + * @direction: The direction of the text segment + * @x: (out): The X value retrieved for the contour point + * @y: (out): The Y value retrieved for the contour point * + * Fetches the (X,Y) coordinates of a specified contour-point index + * in the specified glyph ID in the specified font, with respect + * to the origin in a text segment in the specified direction. * + * Calls the appropriate direction-specific variant (horizontal + * or vertical) depending on the value of @direction. * - * Return value: + * Return value: %true if data found, false otherwise * * Since: 0.9.2 **/ @@ -1297,12 +1407,16 @@ hb_font_get_glyph_contour_point_for_origin (hb_font_t *font, /* Generates gidDDD if glyph has no name. */ /** * hb_font_glyph_to_string: - * @font: a font. - * @glyph: - * @s: (array length=size): - * @size: + * @font: #hb_font_t to work upon + * @glyph: The glyph ID to query + * @s: (out) (array length=size): The string containing the glyph name + * @size: Length of string @s * + * Fetches the name of the specified glyph ID in @font and returns + * it in string @s. * + * If the glyph ID has no name in @font, a string of the form "gidDDD" is + * generated. * * Since: 0.9.2 **/ @@ -1318,14 +1432,17 @@ hb_font_glyph_to_string (hb_font_t *font, /* Parses gidDDD and uniUUUU strings automatically. */ /** * hb_font_glyph_from_string: - * @font: a font. - * @s: (array length=len) (element-type uint8_t): - * @len: - * @glyph: (out): + * @font: #hb_font_t to work upon + * @s: (array length=len) (element-type uint8_t): string to query + * @len: The length of the string @s + * @glyph: (out): The glyph ID corresponding to the string requested * + * Fetches the glyph ID from @font that matches the specified string. + * Strings of the format "gidDDD" or "uniUUUU" are parsed automatically. * + * Note: @len == -1 means the string is null-terminated. * - * Return value: + * Return value: %true if data found, false otherwise * * Since: 0.9.2 **/ @@ -1394,9 +1511,9 @@ _hb_font_create (hb_face_t *face) * hb_font_create: (Xconstructor) * @face: a face. * + * Constructs a new font object from the specified face. * - * - * Return value: (transfer full): + * Return value: (transfer full): The new font object * * Since: 0.9.2 **/ @@ -1429,11 +1546,12 @@ _hb_font_adopt_var_coords (hb_font_t *font, /** * hb_font_create_sub_font: - * @parent: parent font. + * @parent: The parent font object * + * Constructs a sub-font font object from the specified @parent font, + * replicating the parent's properties. * - * - * Return value: (transfer full): + * Return value: (transfer full): The new sub-font font object * * Since: 0.9.2 **/ @@ -1481,9 +1599,9 @@ hb_font_create_sub_font (hb_font_t *parent) /** * hb_font_get_empty: * + * Fetches the empty font object. * - * - * Return value: (transfer full) + * Return value: (transfer full): The empty font object * * Since: 0.9.2 **/ @@ -1495,11 +1613,11 @@ hb_font_get_empty () /** * hb_font_reference: (skip) - * @font: a font. + * @font: #hb_font_t to work upon * + * Increases the reference count on the given font object. * - * - * Return value: (transfer full): + * Return value: (transfer full): The @font object * * Since: 0.9.2 **/ @@ -1511,9 +1629,11 @@ hb_font_reference (hb_font_t *font) /** * hb_font_destroy: (skip) - * @font: a font. - * + * @font: #hb_font_t to work upon * + * Decreases the reference count on the given font object. When the + * reference count reaches zero, the font is destroyed, + * freeing all memory. * * Since: 0.9.2 **/ @@ -1539,13 +1659,13 @@ hb_font_destroy (hb_font_t *font) /** * hb_font_set_user_data: (skip) - * @font: a font. - * @key: - * @data: - * @destroy: - * @replace: - * + * @font: #hb_font_t to work upon + * @key: The user-data key + * @data: A pointer to the user data + * @destroy: (optional): A callback to call when @data is not needed anymore + * @replace: Whether to replace an existing data with the same key * + * Attaches a user-data key/data pair to the specified font object. * * Return value: * @@ -1555,7 +1675,7 @@ 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, + hb_destroy_func_t destroy /* May be NULL. */, hb_bool_t replace) { return hb_object_set_user_data (font, key, data, destroy, replace); @@ -1563,12 +1683,13 @@ hb_font_set_user_data (hb_font_t *font, /** * hb_font_get_user_data: (skip) - * @font: a font. - * @key: + * @font: #hb_font_t to work upon + * @key: The user-data key to query * + * Fetches the user-data object associated with the specified key, + * attached to the specified font object. * - * - * Return value: (transfer none): + * Return value: (transfer none): Pointer to the user data * * Since: 0.9.2 **/ @@ -1581,9 +1702,9 @@ hb_font_get_user_data (hb_font_t *font, /** * hb_font_make_immutable: - * @font: a font. - * + * @font: #hb_font_t to work upon * + * Makes @font immutable. * * Since: 0.9.2 **/ @@ -1601,11 +1722,11 @@ hb_font_make_immutable (hb_font_t *font) /** * hb_font_is_immutable: - * @font: a font. + * @font: #hb_font_t to work upon * + * Tests whether a font object is immutable. * - * - * Return value: + * Return value: %true if @font is immutable, false otherwise * * Since: 0.9.2 **/ @@ -1617,10 +1738,10 @@ hb_font_is_immutable (hb_font_t *font) /** * hb_font_set_parent: - * @font: a font. - * @parent: new parent. + * @font: #hb_font_t to work upon + * @parent: The parent font object to assign * - * Sets parent font of @font. + * Sets the parent font of @font. * * Since: 1.0.5 **/ @@ -1643,11 +1764,11 @@ hb_font_set_parent (hb_font_t *font, /** * hb_font_get_parent: - * @font: a font. + * @font: #hb_font_t to work upon * + * Fetches the parent font of @font. * - * - * Return value: (transfer none): + * Return value: (transfer none): The parent font object * * Since: 0.9.2 **/ @@ -1659,10 +1780,10 @@ hb_font_get_parent (hb_font_t *font) /** * hb_font_set_face: - * @font: a font. - * @face: new face. + * @font: #hb_font_t to work upon + * @face: The #hb_face_t to assign * - * Sets font-face of @font. + * Sets @face as the font-face value of @font. * * Since: 1.4.3 **/ @@ -1687,11 +1808,11 @@ hb_font_set_face (hb_font_t *font, /** * hb_font_get_face: - * @font: a font. + * @font: #hb_font_t to work upon * + * Fetches the face associated with the specified font object. * - * - * Return value: (transfer none): + * Return value: (transfer none): The #hb_face_t value * * Since: 0.9.2 **/ @@ -1704,12 +1825,13 @@ hb_font_get_face (hb_font_t *font) /** * hb_font_set_funcs: - * @font: a font. + * @font: #hb_font_t to work upon * @klass: (closure font_data) (destroy destroy) (scope notified): - * @font_data: - * @destroy: - * + * @font_data: Data to attach to @font + * @destroy: (optional): The function to call when @font_data is not needed anymore * + * Replaces the font-functions structure attached to a font, updating + * the font's user-data with @font-data and the @destroy callback. * * Since: 0.9.2 **/ @@ -1717,7 +1839,7 @@ void hb_font_set_funcs (hb_font_t *font, hb_font_funcs_t *klass, void *font_data, - hb_destroy_func_t destroy) + hb_destroy_func_t destroy /* May be NULL. */) { if (hb_object_is_immutable (font)) { @@ -1741,18 +1863,19 @@ hb_font_set_funcs (hb_font_t *font, /** * hb_font_set_funcs_data: - * @font: a font. - * @font_data: (destroy destroy) (scope notified): - * @destroy: - * + * @font: #hb_font_t to work upon + * @font_data: (destroy destroy) (scope notified): Data to attach to @font + * @destroy: (optional): The function to call when @font_data is not needed anymore * + * Replaces the user data attached to a font, updating the font's + * @destroy callback. * * Since: 0.9.2 **/ void hb_font_set_funcs_data (hb_font_t *font, - void *font_data, - hb_destroy_func_t destroy) + void *font_data, + hb_destroy_func_t destroy /* May be NULL. */) { /* Destroy user_data? */ if (hb_object_is_immutable (font)) @@ -1772,11 +1895,11 @@ hb_font_set_funcs_data (hb_font_t *font, /** * hb_font_set_scale: - * @font: a font. - * @x_scale: - * @y_scale: - * + * @font: #hb_font_t to work upon + * @x_scale: Horizontal scale value to assign + * @y_scale: Vertical scale value to assign * + * Sets the horizontal and vertical scale of a font. * * Since: 0.9.2 **/ @@ -1795,11 +1918,11 @@ hb_font_set_scale (hb_font_t *font, /** * hb_font_get_scale: - * @font: a font. - * @x_scale: (out): - * @y_scale: (out): - * + * @font: #hb_font_t to work upon + * @x_scale: (out): Horizontal scale value + * @y_scale: (out): Vertical scale value * + * Fetches the horizontal and vertical scale of a font. * * Since: 0.9.2 **/ @@ -1814,11 +1937,11 @@ hb_font_get_scale (hb_font_t *font, /** * hb_font_set_ppem: - * @font: a font. - * @x_ppem: - * @y_ppem: - * + * @font: #hb_font_t to work upon + * @x_ppem: Horizontal ppem value to assign + * @y_ppem: Vertical ppem value to assign * + * Sets the horizontal and vertical points-per-em (ppem) of a font. * * Since: 0.9.2 **/ @@ -1836,11 +1959,11 @@ hb_font_set_ppem (hb_font_t *font, /** * hb_font_get_ppem: - * @font: a font. - * @x_ppem: (out): - * @y_ppem: (out): - * + * @font: #hb_font_t to work upon + * @x_ppem: (out): Horizontal ppem value + * @y_ppem: (out): Vertical ppem value * + * Fetches the horizontal and vertical points-per-em (ppem) of a font. * * Since: 0.9.2 **/ @@ -1855,12 +1978,13 @@ hb_font_get_ppem (hb_font_t *font, /** * hb_font_set_ptem: - * @font: a font. + * @font: #hb_font_t to work upon * @ptem: font size in points. * - * Sets "point size" of the font. Set to 0 to unset. + * Sets the "point size" of a font. Set to zero to unset. + * Used in CoreText to implement optical sizing. * - * There are 72 points in an inch. + * Note: There are 72 points in an inch. * * Since: 1.6.0 **/ @@ -1876,11 +2000,12 @@ hb_font_set_ptem (hb_font_t *font, /** * hb_font_get_ptem: - * @font: a font. + * @font: #hb_font_t to work upon * - * Gets the "point size" of the font. A value of 0 means unset. + * Fetches the "point size" of a font. Used in CoreText to + * implement optical sizing. * - * Return value: Point size. + * Return value: Point size. A value of zero means "not set." * * Since: 0.9.2 **/ @@ -1897,6 +2022,11 @@ hb_font_get_ptem (hb_font_t *font) /** * hb_font_set_variations: + * @font: #hb_font_t to work upon + * @variations: (array length=variations_length): Array of variation settings to apply + * @variations_length: Number of variations to apply + * + * Applies a list of font-variation settings to a font. * * Since: 1.4.2 */ @@ -1945,6 +2075,12 @@ hb_font_set_variations (hb_font_t *font, /** * hb_font_set_var_coords_design: + * @font: #hb_font_t to work upon + * @coords: (array length=coords_length): Array of variation coordinates to apply + * @coords_length: Number of coordinates to apply + * + * Applies a list of variation coordinates (in design-space units) + * to a font. * * Since: 1.4.2 */ @@ -2002,6 +2138,14 @@ hb_font_set_var_named_instance (hb_font_t *font, /** * hb_font_set_var_coords_normalized: + * @font: #hb_font_t to work upon + * @coords: (array length=coords_length): Array of variation coordinates to apply + * @coords_length: Number of coordinates to apply + * + * Applies a list of variation coordinates (in normalized units) + * to a font. + * + * Note: Coordinates should be normalized to 2.14. * * Since: 1.4.2 */ @@ -2042,6 +2186,11 @@ hb_font_set_var_coords_normalized (hb_font_t *font, /** * hb_font_get_var_coords_normalized: + * @font: #hb_font_t to work upon + * @length: Number of coordinates retrieved + * + * Fetches the list of normalized variation coordinates currently + * set on a font. * * Return value is valid as long as variation coordinates of the font * are not modified. @@ -2165,10 +2314,10 @@ hb_font_get_variation_glyph_trampoline (hb_font_t *font, /** * hb_font_funcs_set_glyph_func: - * @ffuncs: font functions. - * @func: (closure user_data) (destroy destroy) (scope notified): callback function. - * @user_data: data to pass to @func. - * @destroy: function to call when @user_data is not needed anymore. + * @ffuncs: The font-functions structure + * @func: (closure user_data) (destroy destroy) (scope notified): callback function + * @user_data: data to pass to @func + * @destroy: (optional): function to call when @user_data is not needed anymore * * Deprecated. Use hb_font_funcs_set_nominal_glyph_func() and * hb_font_funcs_set_variation_glyph_func() instead. @@ -2180,7 +2329,7 @@ void hb_font_funcs_set_glyph_func (hb_font_funcs_t *ffuncs, hb_font_get_glyph_func_t func, void *user_data, - hb_destroy_func_t destroy) + hb_destroy_func_t destroy /* May be NULL. */) { if (hb_object_is_immutable (ffuncs)) { diff --git a/src/hb-font.h b/src/hb-font.h index 5c6d56897..e6d63714e 100644 --- a/src/hb-font.h +++ b/src/hb-font.h @@ -45,6 +45,19 @@ typedef struct hb_font_t hb_font_t; * hb_font_funcs_t */ +/** + * hb_font_funcs_t: + * + * Data type containing a set of virtual methods used for + * working on #hb_font_t font objects. + * + * HarfBuzz provides a lightweight default function for each of + * the methods in #hb_font_funcs_t. Client programs can implement + * their own replacements for the individual font functions, as + * needed, and replace the default by calling the setter for a + * method. + * + **/ typedef struct hb_font_funcs_t hb_font_funcs_t; HB_EXTERN hb_font_funcs_t * @@ -81,7 +94,17 @@ hb_font_funcs_is_immutable (hb_font_funcs_t *ffuncs); /* font and glyph extents */ -/* Note that typically ascender is positive and descender negative in coordinate systems that grow up. */ +/** + * hb_font_extents_t: + * @ascender: The height of typographic ascenders. + * @descender: The depth of typographic descenders. + * @line_gap: The suggested line-spacing gap. + * + * Font-wide extent values, measured in font units. + * + * Note that typically @ascender is positive and @descender + * negative, in coordinate systems that grow up. + **/ typedef struct hb_font_extents_t { hb_position_t ascender; /* typographic ascender. */ hb_position_t descender; /* typographic descender. */ @@ -98,7 +121,17 @@ typedef struct hb_font_extents_t { hb_position_t reserved1; } hb_font_extents_t; -/* Note that height is negative in coordinate systems that grow up. */ +/** + * hb_glyph_extents_t: + * @x_bearing: Distance from the x-origin to the left extremum of the glyph. + * @y_bearing: Distance from the top extremum of the glyph to the y-origin. + * @width: Distance from the left extremum of the glyph to the right extremum. + * @height: Distance from the top extremum of the glyph to the bottom extremum. + * + * Glyph extent values, measured in font units. + * + * Note that @height is negative, in coordinate systems that grow up. + **/ typedef struct hb_glyph_extents_t { hb_position_t x_bearing; /* left side of glyph from origin. */ hb_position_t y_bearing; /* top side of glyph from origin. */ @@ -111,19 +144,72 @@ typedef struct hb_glyph_extents_t { typedef hb_bool_t (*hb_font_get_font_extents_func_t) (hb_font_t *font, void *font_data, hb_font_extents_t *extents, void *user_data); + +/** + * hb_font_get_font_h_extents_func_t: + * + * A virtual method for the #hb_font_funcs_t of an #hb_font_t object. + * + * This method should retrieve the extents for a font, in horizontal-direction + * text segments. Extents must be returned in an #hb_glyph_extents output + * parameter. + * + **/ typedef hb_font_get_font_extents_func_t hb_font_get_font_h_extents_func_t; + +/** + * hb_font_get_font_v_extents_func_t: + * + * A virtual method for the #hb_font_funcs_t of an #hb_font_t object. + * + * This method should retrieve the extents for a font, in vertical-direction + * text segments. Extents must be returned in an #hb_glyph_extents output + * parameter. + * + **/ typedef hb_font_get_font_extents_func_t hb_font_get_font_v_extents_func_t; +/** + * hb_font_get_nominal_glyph_func_t: + * + * A virtual method for the #hb_font_funcs_t of an #hb_font_t object. + * + * This method should retrieve the nominal glyph ID for a specified Unicode code + * point. Glyph IDs must be returned in a #hb_codepoint_t output parameter. + * + **/ typedef hb_bool_t (*hb_font_get_nominal_glyph_func_t) (hb_font_t *font, void *font_data, hb_codepoint_t unicode, hb_codepoint_t *glyph, void *user_data); + +/** + * hb_font_get_variation_glyph_func_t: + * + * A virtual method for the #hb_font_funcs_t of an #hb_font_t object. + * + * This method should retrieve the glyph ID for a specified Unicode code point + * followed by a specified Variation Selector code point. Glyph IDs must be + * returned in a #hb_codepoint_t output parameter. + * + **/ typedef hb_bool_t (*hb_font_get_variation_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); + +/** + * hb_font_get_nominal_glyphs_func_t: + * + * A virtual method for the #hb_font_funcs_t of an #hb_font_t object. + * + * This method should retrieve the nominal glyph IDs for a sequence of + * Unicode code points. Glyph IDs must be returned in a #hb_codepoint_t + * output parameter. + * + **/ typedef unsigned int (*hb_font_get_nominal_glyphs_func_t) (hb_font_t *font, void *font_data, unsigned int count, const hb_codepoint_t *first_unicode, @@ -132,13 +218,51 @@ typedef unsigned int (*hb_font_get_nominal_glyphs_func_t) (hb_font_t *font, void unsigned int glyph_stride, void *user_data); - +/** + * hb_font_get_glyph_advance_func_t: + * + * A virtual method for the #hb_font_funcs_t of an #hb_font_t object. + * + * This method should retrieve the advance for a specified glyph. The + * method must return an #hb_position_t. + * + **/ 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); + +/** + * hb_font_get_glyph_h_advance_func_t: + * + * A virtual method for the #hb_font_funcs_t of an #hb_font_t object. + * + * This method should retrieve the advance for a specified glyph, in + * horizontal-direction text segments. Advances must be returned in + * an #hb_position_t output parameter. + * + **/ typedef hb_font_get_glyph_advance_func_t hb_font_get_glyph_h_advance_func_t; + +/** + * hb_font_get_glyph_v_advance_func_t: + * + * A virtual method for the #hb_font_funcs_t of an #hb_font_t object. + * + * This method should retrieve the advance for a specified glyph, in + * vertical-direction text segments. Advances must be returned in + * an #hb_position_t output parameter. + * + **/ typedef hb_font_get_glyph_advance_func_t hb_font_get_glyph_v_advance_func_t; +/** + * hb_font_get_glyph_advances_func_t: + * + * A virtual method for the #hb_font_funcs_t of an #hb_font_t object. + * + * This method should retrieve the advances for a sequence of glyphs. + * + **/ typedef void (*hb_font_get_glyph_advances_func_t) (hb_font_t* font, void* font_data, unsigned int count, const hb_codepoint_t *first_glyph, @@ -146,14 +270,66 @@ typedef void (*hb_font_get_glyph_advances_func_t) (hb_font_t* font, void* font_d hb_position_t *first_advance, unsigned advance_stride, void *user_data); + +/** + * hb_font_get_glyph_h_advances_func_t: + * + * A virtual method for the #hb_font_funcs_t of an #hb_font_t object. + * + * This method should retrieve the advances for a sequence of glyphs, in + * horizontal-direction text segments. + * + **/ typedef hb_font_get_glyph_advances_func_t hb_font_get_glyph_h_advances_func_t; + +/** + * hb_font_get_glyph_v_advances_func_t: + * + * A virtual method for the #hb_font_funcs_t of an #hb_font_t object. + * + * This method should retrieve the advances for a sequence of glyphs, in + * vertical-direction text segments. + * + **/ typedef hb_font_get_glyph_advances_func_t hb_font_get_glyph_v_advances_func_t; +/** + * hb_font_get_glyph_origin_func_t: + * + * A virtual method for the #hb_font_funcs_t of an #hb_font_t object. + * + * This method should retrieve the (X,Y) coordinates (in font units) of the + * origin for a glyph. Each coordinate must be returned in an #hb_position_t + * output parameter. + * + **/ 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); + +/** + * hb_font_get_glyph_h_origin_func_t: + * + * A virtual method for the #hb_font_funcs_t of an #hb_font_t object. + * + * This method should retrieve the (X,Y) coordinates (in font units) of the + * origin for a glyph, in horizontal-direction text segments. Each + * coordinate must be returned in an #hb_position_t output parameter. + * + **/ typedef hb_font_get_glyph_origin_func_t hb_font_get_glyph_h_origin_func_t; + +/** + * hb_font_get_glyph_v_origin_func_t: + * + * A virtual method for the #hb_font_funcs_t of an #hb_font_t object. + * + * This method should retrieve the (X,Y) coordinates (in font units) of the + * origin for a glyph, in vertical-direction text segments. Each coordinate + * must be returned in an #hb_position_t output parameter. + * + **/ 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, @@ -162,20 +338,59 @@ typedef hb_position_t (*hb_font_get_glyph_kerning_func_t) (hb_font_t *font, void typedef hb_font_get_glyph_kerning_func_t hb_font_get_glyph_h_kerning_func_t; +/** + * hb_font_get_glyph_extents_func_t: + * + * A virtual method for the #hb_font_funcs_t of an #hb_font_t object. + * + * This method should retrieve the extents for a specified glyph. Extents must be + * returned in an #hb_glyph_extents output parameter. + * + **/ 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); + +/** + * hb_font_get_glyph_contour_point_func_t: + * + * A virtual method for the #hb_font_funcs_t of an #hb_font_t object. + * + * This method should retrieve the (X,Y) coordinates (in font units) for a + * specified contour point in a glyph. Each coordinate must be returned as + * an #hb_position_t output parameter. + * + **/ 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); +/** + * hb_font_get_glyph_name_func_t: + * + * A virtual method for the #hb_font_funcs_t of an #hb_font_t object. + * + * This method should retrieve the glyph name that corresponds to a + * glyph ID. The name should be returned in a string output parameter. + * + **/ typedef hb_bool_t (*hb_font_get_glyph_name_func_t) (hb_font_t *font, void *font_data, hb_codepoint_t glyph, char *name, unsigned int size, void *user_data); + +/** + * hb_font_get_glyph_from_name_func_t: + * + * A virtual method for the #hb_font_funcs_t of an #hb_font_t object. + * + * This method should retrieve the glyph ID that corresponds to a glyph-name + * string. + * + **/ typedef hb_bool_t (*hb_font_get_glyph_from_name_func_t) (hb_font_t *font, void *font_data, const char *name, int len, /* -1 means nul-terminated */ hb_codepoint_t *glyph, @@ -186,12 +401,12 @@ typedef hb_bool_t (*hb_font_get_glyph_from_name_func_t) (hb_font_t *font, void * /** * hb_font_funcs_set_font_h_extents_func: - * @ffuncs: font functions. - * @func: (closure user_data) (destroy destroy) (scope notified): - * @user_data: - * @destroy: - * + * @ffuncs: A font-function structure + * @func: (closure user_data) (destroy destroy) (scope notified): The callback function to assign + * @user_data: Data to pass to @func + * @destroy: The function to call when @user_data is not needed anymore * + * Sets the implementation function for #hb_font_get_font_h_extents_func_t. * * Since: 1.1.2 **/ @@ -202,12 +417,12 @@ hb_font_funcs_set_font_h_extents_func (hb_font_funcs_t *ffuncs, /** * hb_font_funcs_set_font_v_extents_func: - * @ffuncs: font functions. - * @func: (closure user_data) (destroy destroy) (scope notified): - * @user_data: - * @destroy: - * + * @ffuncs: A font-function structure + * @func: (closure user_data) (destroy destroy) (scope notified): The callback function to assign + * @user_data: Data to pass to @func + * @destroy: The function to call when @user_data is not needed anymore * + * Sets the implementation function for #hb_font_get_font_v_extents_func_t. * * Since: 1.1.2 **/ @@ -218,12 +433,12 @@ hb_font_funcs_set_font_v_extents_func (hb_font_funcs_t *ffuncs, /** * hb_font_funcs_set_nominal_glyph_func: - * @ffuncs: font functions. - * @func: (closure user_data) (destroy destroy) (scope notified): - * @user_data: - * @destroy: - * + * @ffuncs: A font-function structure + * @func: (closure user_data) (destroy destroy) (scope notified): The callback function to assign + * @user_data: Data to pass to @func + * @destroy: The function to call when @user_data is not needed anymore * + * Sets the implementation function for #hb_font_get_nominal_glyph_func_t. * * Since: 1.2.3 **/ @@ -234,12 +449,12 @@ hb_font_funcs_set_nominal_glyph_func (hb_font_funcs_t *ffuncs, /** * hb_font_funcs_set_nominal_glyphs_func: - * @ffuncs: font functions. - * @func: (closure user_data) (destroy destroy) (scope notified): - * @user_data: - * @destroy: - * + * @ffuncs: A font-function structure + * @func: (closure user_data) (destroy destroy) (scope notified): The callback function to assign + * @user_data: Data to pass to @func + * @destroy: The function to call when @user_data is not needed anymore * + * Sets the implementation function for #hb_font_get_nominal_glyphs_func_t. * * Since: 2.0.0 **/ @@ -250,12 +465,12 @@ hb_font_funcs_set_nominal_glyphs_func (hb_font_funcs_t *ffuncs, /** * hb_font_funcs_set_variation_glyph_func: - * @ffuncs: font functions. - * @func: (closure user_data) (destroy destroy) (scope notified): - * @user_data: - * @destroy: - * + * @ffuncs: A font-function structure + * @func: (closure user_data) (destroy destroy) (scope notified): The callback function to assign + * @user_data: Data to pass to @func + * @destroy: The function to call when @user_data is not needed anymore * + * Sets the implementation function for #hb_font_get_variation_glyph_func_t. * * Since: 1.2.3 **/ @@ -266,12 +481,12 @@ hb_font_funcs_set_variation_glyph_func (hb_font_funcs_t *ffuncs, /** * hb_font_funcs_set_glyph_h_advance_func: - * @ffuncs: font functions. - * @func: (closure user_data) (destroy destroy) (scope notified): - * @user_data: - * @destroy: - * + * @ffuncs: A font-function structure + * @func: (closure user_data) (destroy destroy) (scope notified): The callback function to assign + * @user_data: Data to pass to @func + * @destroy: The function to call when @user_data is not needed anymore * + * Sets the implementation function for #hb_font_get_glyph_h_advance_func_t. * * Since: 0.9.2 **/ @@ -282,12 +497,12 @@ hb_font_funcs_set_glyph_h_advance_func (hb_font_funcs_t *ffuncs, /** * hb_font_funcs_set_glyph_v_advance_func: - * @ffuncs: font functions. - * @func: (closure user_data) (destroy destroy) (scope notified): - * @user_data: - * @destroy: - * + * @ffuncs: A font-function structure + * @func: (closure user_data) (destroy destroy) (scope notified): The callback function to assign + * @user_data: Data to pass to @func + * @destroy: The function to call when @user_data is not needed anymore * + * Sets the implementation function for #hb_font_get_glyph_v_advance_func_t. * * Since: 0.9.2 **/ @@ -298,12 +513,12 @@ hb_font_funcs_set_glyph_v_advance_func (hb_font_funcs_t *ffuncs, /** * hb_font_funcs_set_glyph_h_advances_func: - * @ffuncs: font functions. - * @func: (closure user_data) (destroy destroy) (scope notified): - * @user_data: - * @destroy: - * + * @ffuncs: A font-function structure + * @func: (closure user_data) (destroy destroy) (scope notified): The callback function to assign + * @user_data: Data to pass to @func + * @destroy: The function to call when @user_data is not needed anymore * + * Sets the implementation function for #hb_font_get_glyph_h_advances_func_t. * * Since: 1.8.6 **/ @@ -314,12 +529,12 @@ hb_font_funcs_set_glyph_h_advances_func (hb_font_funcs_t *ffuncs, /** * hb_font_funcs_set_glyph_v_advances_func: - * @ffuncs: font functions. - * @func: (closure user_data) (destroy destroy) (scope notified): - * @user_data: - * @destroy: - * + * @ffuncs: A font-function structure + * @func: (closure user_data) (destroy destroy) (scope notified): The callback function to assign + * @user_data: Data to pass to @func + * @destroy: The function to call when @user_data is not needed anymore * + * Sets the implementation function for #hb_font_get_glyph_v_advances_func_t. * * Since: 1.8.6 **/ @@ -330,12 +545,12 @@ hb_font_funcs_set_glyph_v_advances_func (hb_font_funcs_t *ffuncs, /** * hb_font_funcs_set_glyph_h_origin_func: - * @ffuncs: font functions. - * @func: (closure user_data) (destroy destroy) (scope notified): - * @user_data: - * @destroy: - * + * @ffuncs: A font-function structure + * @func: (closure user_data) (destroy destroy) (scope notified): The callback function to assign + * @user_data: Data to pass to @func + * @destroy: The function to call when @user_data is not needed anymore * + * Sets the implementation function for #hb_font_get_glyph_h_origin_func_t. * * Since: 0.9.2 **/ @@ -346,12 +561,12 @@ hb_font_funcs_set_glyph_h_origin_func (hb_font_funcs_t *ffuncs, /** * hb_font_funcs_set_glyph_v_origin_func: - * @ffuncs: font functions. - * @func: (closure user_data) (destroy destroy) (scope notified): - * @user_data: - * @destroy: - * + * @ffuncs: A font-function structure + * @func: (closure user_data) (destroy destroy) (scope notified): The callback function to assign + * @user_data: Data to pass to @func + * @destroy: The function to call when @user_data is not needed anymore * + * Sets the implementation function for #hb_font_get_glyph_v_origin_func_t. * * Since: 0.9.2 **/ @@ -378,12 +593,12 @@ hb_font_funcs_set_glyph_h_kerning_func (hb_font_funcs_t *ffuncs, /** * hb_font_funcs_set_glyph_extents_func: - * @ffuncs: font functions. - * @func: (closure user_data) (destroy destroy) (scope notified): - * @user_data: - * @destroy: - * + * @ffuncs: A font-function structure + * @func: (closure user_data) (destroy destroy) (scope notified): The callback function to assign + * @user_data: Data to pass to @func + * @destroy: The function to call when @user_data is not needed anymore * + * Sets the implementation function for #hb_font_get_glyph_extents_func_t. * * Since: 0.9.2 **/ @@ -394,12 +609,12 @@ hb_font_funcs_set_glyph_extents_func (hb_font_funcs_t *ffuncs, /** * hb_font_funcs_set_glyph_contour_point_func: - * @ffuncs: font functions. - * @func: (closure user_data) (destroy destroy) (scope notified): - * @user_data: - * @destroy: - * + * @ffuncs: A font-function structure + * @func: (closure user_data) (destroy destroy) (scope notified): The callback function to assign + * @user_data: Data to pass to @func + * @destroy: The function to call when @user_data is not needed anymore * + * Sets the implementation function for #hb_font_get_glyph_contour_point_func_t. * * Since: 0.9.2 **/ @@ -410,12 +625,12 @@ hb_font_funcs_set_glyph_contour_point_func (hb_font_funcs_t *ffuncs, /** * hb_font_funcs_set_glyph_name_func: - * @ffuncs: font functions. - * @func: (closure user_data) (destroy destroy) (scope notified): - * @user_data: - * @destroy: - * + * @ffuncs: A font-function structure + * @func: (closure user_data) (destroy destroy) (scope notified): The callback function to assign + * @user_data: Data to pass to @func + * @destroy: The function to call when @user_data is not needed anymore * + * Sets the implementation function for #hb_font_get_glyph_name_func_t. * * Since: 0.9.2 **/ @@ -426,12 +641,12 @@ hb_font_funcs_set_glyph_name_func (hb_font_funcs_t *ffuncs, /** * hb_font_funcs_set_glyph_from_name_func: - * @ffuncs: font functions. - * @func: (closure user_data) (destroy destroy) (scope notified): - * @user_data: - * @destroy: - * + * @ffuncs: A font-function structure + * @func: (closure user_data) (destroy destroy) (scope notified): The callback function to assign + * @user_data: Data to pass to @func + * @destroy: The function to call when @user_data is not needed anymore * + * Sets the implementation function for #hb_font_get_glyph_from_name_func_t. * * Since: 0.9.2 **/