1 cdef extern from "stdlib.h":
3 void *malloc(size_t size)
6 cdef extern from "ft2build.h" :
9 cdef extern from "freetype/freetype.h" :
10 ctypedef void *FT_Library
11 ctypedef void *FT_Face
14 FT_Error FT_Init_FreeType (FT_Library *alib)
15 FT_Error FT_Done_FreeType (FT_Library alib)
16 FT_Error FT_Done_Face (FT_Face alib)
17 FT_Error FT_New_Face( FT_Library library, char *path, unsigned long index, FT_Face *aface)
18 FT_Error FT_Set_Char_Size (FT_Face aFace, unsigned int size_x, unsigned int size_y, unsigned int res_x, unsigned int res_y)
20 cdef extern from "hb-common.h" :
21 cdef enum hb_direction_t :
26 ctypedef unsigned long hb_codepoint_t
27 ctypedef long hb_position_t
28 ctypedef unsigned long hb_mask_t
29 ctypedef unsigned long hb_tag_t
30 hb_tag_t hb_tag_from_string (char *s)
31 ctypedef void (*hb_destroy_func_t) (void *user_data)
33 cdef extern from "hb-unicode.h" :
34 # there must be a better way of syncing this list with the true source
35 ctypedef enum hb_script_t :
38 cdef extern from "hb-language.h" :
39 ctypedef void *hb_language_t
40 hb_language_t hb_language_from_string(char *str)
41 char * hb_language_to_string(hb_language_t language)
43 cdef extern from "hb-ot-tag.h" :
44 hb_script_t hb_ot_tag_to_script (hb_tag_t tag)
46 cdef extern from "hb-buffer.h" :
47 ctypedef struct hb_buffer_t :
50 ctypedef struct hb_glyph_info_t :
51 hb_codepoint_t codepoint
55 ctypedef union hb_var_int_t:
58 ctypedef struct hb_glyph_position_t :
59 hb_position_t x_advance
60 hb_position_t y_advance
61 hb_position_t x_offset
62 hb_position_t y_offset
65 hb_buffer_t *hb_buffer_create(unsigned int size)
66 hb_buffer_t *hb_buffer_reference(hb_buffer_t *buffer)
67 unsigned int hb_buffer_get_reference_count(hb_buffer_t *buffer)
68 void hb_buffer_destroy(hb_buffer_t *buffer)
69 void hb_buffer_set_direction(hb_buffer_t *buffer, hb_direction_t direction)
70 hb_direction_t hb_buffer_get_direction(hb_buffer_t *buffer)
71 void hb_buffer_set_script(hb_buffer_t *buffer, hb_script_t script)
72 hb_script_t hb_buffer_get_script(hb_buffer_t *buffer)
73 void hb_buffer_set_language(hb_buffer_t *buffer, hb_language_t language)
74 hb_language_t hb_buffer_get_language(hb_buffer_t *buffer)
75 void hb_buffer_clear(hb_buffer_t *)
76 void hb_buffer_clear_positions(hb_buffer_t *buffer)
77 void hb_buffer_ensure(hb_buffer_t *buffer, unsigned int size)
78 void hb_buffer_reverse(hb_buffer_t *buffer)
79 void hb_buffer_reverse_clusters(hb_buffer_t *buffer)
80 void hb_buffer_add_glyph(hb_buffer_t *buffer, hb_codepoint_t codepoint, hb_mask_t mask, unsigned int cluster)
81 void hb_buffer_add_utf8(hb_buffer_t *buffer, char *text, unsigned int text_length, unsigned int item_offset, unsigned int item_length)
82 unsigned int hb_buffer_get_length(hb_buffer_t *buffer)
83 hb_glyph_info_t *hb_buffer_get_glyph_infos(hb_buffer_t *buffer)
84 hb_glyph_position_t *hb_buffer_get_glyph_positions(hb_buffer_t *buffer)
86 cdef extern from "hb-blob.h" :
87 cdef struct hb_blob_t :
89 # do I need blob functions here?
91 cdef extern from "hb-font.h" :
92 ctypedef struct hb_face_t :
94 ctypedef struct hb_font_t :
97 ctypedef hb_blob_t * (*hb_get_table_func_t) (hb_tag_t tag, void *user_data)
98 hb_face_t * hb_face_create_for_data(hb_blob_t *blob, unsigned int index)
99 hb_face_t * hb_face_create_for_tables(hb_get_table_func_t get_table, hb_destroy_func_t destroy, void *user_data)
100 hb_face_t * hb_face_reference(hb_face_t *face)
101 unsigned int hb_face_get_reference_count(hb_face_t *face)
102 void hb_face_destroy(hb_face_t *face)
103 void hb_font_destroy(hb_font_t *font)
104 hb_blob_t * hb_face_get_table(hb_face_t *face, hb_tag_t tag)
107 cdef extern from "hb-shape.h" :
108 ctypedef struct hb_feature_t :
114 void hb_shape (hb_font_t *font, hb_face_t *face, hb_buffer_t *buffer, hb_feature_t *features, unsigned int num_features)
116 cdef extern from "hb-ft.h" :
117 hb_face_t *hb_ft_face_create (FT_Face ft_face, hb_destroy_func_t destroy)
118 hb_font_t *hb_ft_font_create (FT_Face ft_face, hb_destroy_func_t destroy)
122 def __init__(self, gid, cluster, advance, offset, internal = 0) :
124 self.cluster = cluster
125 self.advance = advance
127 self.internal = internal
130 res = "{0:d}>{1:d}@({2:.2f},{3:.2f})+({4:.2f},{5:.2f})".format(self.gid, self.cluster, self.offset[0], self.offset[1], self.advance[0], self.advance[1])
131 if self.internal : res += "/i=" + str(self.internal)
135 cdef hb_buffer_t *buffer
137 def __init__(self, char *text, unsigned int length) :
138 """Note text must be a utf-8 string and length is number of chars"""
139 self.buffer = hb_buffer_create(length)
140 hb_buffer_add_utf8(self.buffer, text, length, 0, len(text))
142 def set_scriptlang(self, char *script, char *lang) :
143 cdef hb_language_t language
144 cdef hb_script_t scriptnum
146 language = hb_language_from_string(lang)
147 scriptnum = hb_ot_tag_to_script(hb_tag_from_string(script))
148 hb_buffer_set_script(self.buffer, scriptnum)
149 hb_buffer_set_language(self.buffer, language)
151 def get_info(self, scale = 1) :
152 cdef hb_glyph_info_t *infos
153 cdef hb_glyph_position_t *positions
154 cdef unsigned int num
158 num = hb_buffer_get_length(self.buffer)
159 infos = hb_buffer_get_glyph_infos(self.buffer)
160 positions = hb_buffer_get_glyph_positions(self.buffer)
162 temp = glyphinfo(infos[i].codepoint, infos[i].cluster, (positions[i].x_advance / scale, positions[i].y_advance / scale), (positions[i].x_offset / scale, positions[i].y_offset / scale), positions[i].var.u32)
166 def get_settings(self) :
167 cdef hb_script_t script
168 cdef hb_language_t lang
170 script = hb_buffer_get_script(self.buffer)
171 lang = hb_buffer_get_language(self.buffer)
172 return {'script' : script, 'language' : hb_language_to_string(lang)}
175 hb_buffer_destroy(self.buffer)
178 cdef FT_Library engine
180 cdef hb_face_t *hbface
181 cdef hb_font_t *hbfont
183 def __init__(self, char *fname, size) :
184 cdef FT_Library engine
185 FT_Init_FreeType(&engine)
188 FT_New_Face(engine, fname, 0, &face)
189 FT_Set_Char_Size(face, size << 6, size << 6, 72, 72)
191 self.hbface = hb_ft_face_create(face, <void (*)(void *)>hb_face_destroy)
192 self.hbfont = hb_ft_font_create(face, <void (*)(void *)>hb_font_destroy)
195 cdef FT_Library engine
200 FT_Done_FreeType(engine)
202 def shape(self, buffer aBuffer, features = {}) :
203 cdef hb_feature_t *feats
204 cdef hb_feature_t *aFeat
205 feats = <hb_feature_t *>malloc(sizeof(hb_feature_t) * len(features))
207 for k,v in features.items() :
208 aFeat.tag = hb_tag_from_string (k)
213 hb_shape(self.hbfont, self.hbface, aBuffer.buffer, feats, len(features))