1 | /* Pango |
2 | * pangocairo-private.h: private symbols for the Cairo backend |
3 | * |
4 | * Copyright (C) 2000,2004 Red Hat, Inc. |
5 | * |
6 | * This library is free software; you can redistribute it and/or |
7 | * modify it under the terms of the GNU Library General Public |
8 | * License as published by the Free Software Foundation; either |
9 | * version 2 of the License, or (at your option) any later version. |
10 | * |
11 | * This library is distributed in the hope that it will be useful, |
12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
14 | * Library General Public License for more details. |
15 | * |
16 | * You should have received a copy of the GNU Library General Public |
17 | * License along with this library; if not, write to the |
18 | * Free Software Foundation, Inc., 59 Temple Place - Suite 330, |
19 | * Boston, MA 02111-1307, USA. |
20 | */ |
21 | |
22 | #ifndef __PANGOCAIRO_PRIVATE_H__ |
23 | #define __PANGOCAIRO_PRIVATE_H__ |
24 | |
25 | #include <pango/pangocairo.h> |
26 | #include <pango/pango-renderer.h> |
27 | |
28 | G_BEGIN_DECLS |
29 | |
30 | |
31 | #define PANGO_CAIRO_FONT_MAP_GET_IFACE(obj) (G_TYPE_INSTANCE_GET_INTERFACE ((obj), PANGO_TYPE_CAIRO_FONT_MAP, PangoCairoFontMapIface)) |
32 | |
33 | typedef struct _PangoCairoFontMapIface PangoCairoFontMapIface; |
34 | |
35 | struct _PangoCairoFontMapIface |
36 | { |
37 | GTypeInterface g_iface; |
38 | |
39 | void (*set_resolution) (PangoCairoFontMap *fontmap, |
40 | double dpi); |
41 | double (*get_resolution) (PangoCairoFontMap *fontmap); |
42 | |
43 | cairo_font_type_t (*get_font_type) (PangoCairoFontMap *fontmap); |
44 | }; |
45 | |
46 | |
47 | #define PANGO_CAIRO_FONT_GET_IFACE(obj) (G_TYPE_INSTANCE_GET_INTERFACE ((obj), PANGO_TYPE_CAIRO_FONT, PangoCairoFontIface)) |
48 | |
49 | typedef struct _PangoCairoFontIface PangoCairoFontIface; |
50 | typedef struct _PangoCairoFontPrivate PangoCairoFontPrivate; |
51 | typedef struct _PangoCairoFontHexBoxInfo PangoCairoFontHexBoxInfo; |
52 | typedef struct _PangoCairoFontPrivateScaledFontData PangoCairoFontPrivateScaledFontData; |
53 | typedef struct _PangoCairoFontGlyphExtentsCacheEntry PangoCairoFontGlyphExtentsCacheEntry; |
54 | |
55 | struct _PangoCairoFontHexBoxInfo |
56 | { |
57 | PangoCairoFont *font; |
58 | int rows; |
59 | double digit_width; |
60 | double digit_height; |
61 | double pad_x; |
62 | double pad_y; |
63 | double line_width; |
64 | double box_descent; |
65 | double box_height; |
66 | }; |
67 | |
68 | struct _PangoCairoFontPrivateScaledFontData |
69 | { |
70 | cairo_matrix_t font_matrix; |
71 | cairo_matrix_t ctm; |
72 | cairo_font_options_t *options; |
73 | }; |
74 | |
75 | struct _PangoCairoFontPrivate |
76 | { |
77 | PangoCairoFont *cfont; |
78 | |
79 | PangoCairoFontPrivateScaledFontData *data; |
80 | |
81 | cairo_scaled_font_t *scaled_font; |
82 | PangoCairoFontHexBoxInfo *hbi; |
83 | |
84 | gboolean is_hinted; |
85 | PangoGravity gravity; |
86 | |
87 | PangoRectangle font_extents; |
88 | PangoCairoFontGlyphExtentsCacheEntry *glyph_extents_cache; |
89 | |
90 | GSList *metrics_by_lang; |
91 | }; |
92 | |
93 | struct _PangoCairoFontIface |
94 | { |
95 | GTypeInterface g_iface; |
96 | |
97 | cairo_font_face_t *(*create_font_face) (PangoCairoFont *cfont); |
98 | PangoFontMetrics *(*create_base_metrics_for_context) (PangoCairoFont *cfont, |
99 | PangoContext *context); |
100 | |
101 | gssize cf_priv_offset; |
102 | }; |
103 | |
104 | gboolean _pango_cairo_font_install (PangoFont *font, |
105 | cairo_t *cr); |
106 | PangoFontMetrics * _pango_cairo_font_get_metrics (PangoFont *font, |
107 | PangoLanguage *language); |
108 | PangoCairoFontHexBoxInfo *_pango_cairo_font_get_hex_box_info (PangoCairoFont *cfont); |
109 | |
110 | void _pango_cairo_font_private_initialize (PangoCairoFontPrivate *cf_priv, |
111 | PangoCairoFont *font, |
112 | PangoGravity gravity, |
113 | const cairo_font_options_t *font_options, |
114 | const PangoMatrix *pango_ctm, |
115 | const cairo_matrix_t *font_matrix); |
116 | void _pango_cairo_font_private_finalize (PangoCairoFontPrivate *cf_priv); |
117 | cairo_scaled_font_t *_pango_cairo_font_private_get_scaled_font (PangoCairoFontPrivate *cf_priv); |
118 | gboolean _pango_cairo_font_private_is_metrics_hinted (PangoCairoFontPrivate *cf_priv); |
119 | void _pango_cairo_font_private_get_glyph_extents (PangoCairoFontPrivate *cf_priv, |
120 | PangoGlyph glyph, |
121 | PangoRectangle *ink_rect, |
122 | PangoRectangle *logical_rect); |
123 | |
124 | #define PANGO_TYPE_CAIRO_RENDERER (pango_cairo_renderer_get_type()) |
125 | #define PANGO_CAIRO_RENDERER(object) (G_TYPE_CHECK_INSTANCE_CAST ((object), PANGO_TYPE_CAIRO_RENDERER, PangoCairoRenderer)) |
126 | #define PANGO_IS_CAIRO_RENDERER(object) (G_TYPE_CHECK_INSTANCE_TYPE ((object), PANGO_TYPE_CAIRO_RENDERER)) |
127 | |
128 | typedef struct _PangoCairoRenderer PangoCairoRenderer; |
129 | |
130 | _PANGO_EXTERN |
131 | GType pango_cairo_renderer_get_type (void) G_GNUC_CONST; |
132 | |
133 | |
134 | const cairo_font_options_t *_pango_cairo_context_get_merged_font_options (PangoContext *context); |
135 | |
136 | |
137 | G_END_DECLS |
138 | |
139 | #endif /* __PANGOCAIRO_PRIVATE_H__ */ |
140 | |