2 * kmscon - Text Renderer
4 * Copyright (c) 2012 David Herrmann <dh.herrmann@googlemail.com>
6 * Permission is hereby granted, free of charge, to any person obtaining
7 * a copy of this software and associated documentation files
8 * (the "Software"), to deal in the Software without restriction, including
9 * without limitation the rights to use, copy, modify, merge, publish,
10 * distribute, sublicense, and/or sell copies of the Software, and to
11 * permit persons to whom the Software is furnished to do so, subject to
12 * the following conditions:
14 * The above copyright notice and this permission notice shall be included
15 * in all copies or substantial portions of the Software.
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
18 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
19 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
20 * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
21 * CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
22 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
23 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
28 * The Text-Renderer subsystem provides a simple way to draw text into a
29 * framebuffer. The system is modular and several different backends are
30 * available that can be used.
31 * The system is split into:
32 * - Font renderer: The font renderer allows selecting fonts and rendering
33 * single glyphs into memory-buffers
34 * - Text renderer: The text renderer uses the font renderer to draw a whole
35 * console into a framebuffer.
43 #include "tsm_screen.h"
48 struct kmscon_font_attr;
51 struct kmscon_font_ops;
53 #define KMSCON_FONT_MAX_NAME 128
54 #define KMSCON_FONT_DEFAULT_NAME "monospace"
55 #define KMSCON_FONT_DEFAULT_PPI 72
57 struct kmscon_font_attr {
58 char name[KMSCON_FONT_MAX_NAME];
67 void kmscon_font_attr_normalize(struct kmscon_font_attr *attr);
68 bool kmscon_font_attr_match(const struct kmscon_font_attr *a1,
69 const struct kmscon_font_attr *a2);
72 struct uterm_video_buffer buf;
79 const struct kmscon_font_ops *ops;
80 struct kmscon_font_attr attr;
81 unsigned int baseline;
85 struct kmscon_font_ops {
87 int (*init) (struct kmscon_font *out,
88 const struct kmscon_font_attr *attr);
89 void (*destroy) (struct kmscon_font *font);
90 int (*render) (struct kmscon_font *font,
91 uint32_t id, const uint32_t *ch, size_t len,
92 const struct kmscon_glyph **out);
93 int (*render_empty) (struct kmscon_font *font,
94 const struct kmscon_glyph **out);
95 int (*render_inval) (struct kmscon_font *font,
96 const struct kmscon_glyph **out);
99 int kmscon_font_register(const struct kmscon_font_ops *ops);
100 void kmscon_font_unregister(const char *name);
102 int kmscon_font_find(struct kmscon_font **out,
103 const struct kmscon_font_attr *attr,
104 const char *backend);
105 void kmscon_font_ref(struct kmscon_font *font);
106 void kmscon_font_unref(struct kmscon_font *font);
108 int kmscon_font_render(struct kmscon_font *font,
109 uint32_t id, const uint32_t *ch, size_t len,
110 const struct kmscon_glyph **out);
111 int kmscon_font_render_empty(struct kmscon_font *font,
112 const struct kmscon_glyph **out);
113 int kmscon_font_render_inval(struct kmscon_font *font,
114 const struct kmscon_glyph **out);
119 struct kmscon_text_ops;
123 const struct kmscon_text_ops *ops;
126 struct kmscon_font *font;
127 struct kmscon_font *bold_font;
128 struct uterm_display *disp;
134 struct kmscon_text_ops {
136 int (*init) (struct kmscon_text *txt);
137 void (*destroy) (struct kmscon_text *txt);
138 int (*set) (struct kmscon_text *txt);
139 void (*unset) (struct kmscon_text *txt);
140 int (*prepare) (struct kmscon_text *txt);
141 int (*draw) (struct kmscon_text *txt,
142 uint32_t id, const uint32_t *ch, size_t len,
143 unsigned int posx, unsigned int posy,
144 const struct tsm_screen_attr *attr);
145 int (*render) (struct kmscon_text *txt);
146 void (*abort) (struct kmscon_text *txt);
149 int kmscon_text_register(const struct kmscon_text_ops *ops);
150 void kmscon_text_unregister(const char *name);
152 int kmscon_text_new(struct kmscon_text **out, const char *backend);
153 void kmscon_text_ref(struct kmscon_text *txt);
154 void kmscon_text_unref(struct kmscon_text *txt);
156 int kmscon_text_set(struct kmscon_text *txt,
157 struct kmscon_font *font,
158 struct kmscon_font *bold_font,
159 struct uterm_display *disp);
160 void kmscon_text_unset(struct kmscon_text *txt);
161 unsigned int kmscon_text_get_cols(struct kmscon_text *txt);
162 unsigned int kmscon_text_get_rows(struct kmscon_text *txt);
164 int kmscon_text_prepare(struct kmscon_text *txt);
165 int kmscon_text_draw(struct kmscon_text *txt,
166 uint32_t id, const uint32_t *ch, size_t len,
167 unsigned int posx, unsigned int posy,
168 const struct tsm_screen_attr *attr);
169 int kmscon_text_render(struct kmscon_text *txt);
170 void kmscon_text_abort(struct kmscon_text *txt);
172 int kmscon_text_prepare_cb(struct tsm_screen *con, void *data);
173 int kmscon_text_draw_cb(struct tsm_screen *con,
174 uint32_t id, const uint32_t *ch, size_t len,
175 unsigned int posx, unsigned int posy,
176 const struct tsm_screen_attr *attr, void *data);
177 int kmscon_text_render_cb(struct tsm_screen *con, void *data);
179 /* modularized backends */
181 #ifdef BUILD_ENABLE_FONT_8X16
183 int kmscon_font_8x16_load(void);
184 void kmscon_font_8x16_unload(void);
188 static inline int kmscon_font_8x16_load(void)
193 static inline void kmscon_font_8x16_unload(void)
199 #ifdef BUILD_ENABLE_FONT_UNIFONT
201 int kmscon_font_unifont_load(void);
202 void kmscon_font_unifont_unload(void);
206 static inline int kmscon_font_unifont_load(void)
211 static inline void kmscon_font_unifont_unload(void)
217 #ifdef BUILD_ENABLE_FONT_FREETYPE2
219 int kmscon_font_freetype2_load(void);
220 void kmscon_font_freetype2_unload(void);
224 static inline int kmscon_font_freetype2_load(void)
229 static inline void kmscon_font_freetype2_unload(void)
235 #ifdef BUILD_ENABLE_FONT_PANGO
237 int kmscon_font_pango_load(void);
238 void kmscon_font_pango_unload(void);
242 static inline int kmscon_font_pango_load(void)
247 static inline void kmscon_font_pango_unload(void)
253 #ifdef BUILD_ENABLE_RENDERER_BBLIT
255 int kmscon_text_bblit_load(void);
256 void kmscon_text_bblit_unload(void);
260 static inline int kmscon_text_bblit_load(void)
265 static inline void kmscon_text_bblit_unload(void)
271 #ifdef BUILD_ENABLE_RENDERER_BBULK
273 int kmscon_text_bbulk_load(void);
274 void kmscon_text_bbulk_unload(void);
278 static inline int kmscon_text_bbulk_load(void)
283 static inline void kmscon_text_bbulk_unload(void)
289 #ifdef BUILD_ENABLE_RENDERER_GLTEX
291 int kmscon_text_gltex_load(void);
292 void kmscon_text_gltex_unload(void);
296 static inline int kmscon_text_gltex_load(void)
301 static inline void kmscon_text_gltex_unload(void)
307 static inline void kmscon_font_load_all(void)
309 kmscon_font_8x16_load();
310 kmscon_font_unifont_load();
311 kmscon_font_pango_load();
312 kmscon_font_freetype2_load();
315 static inline void kmscon_font_unload_all(void)
317 kmscon_font_freetype2_unload();
318 kmscon_font_pango_unload();
319 kmscon_font_unifont_unload();
320 kmscon_font_8x16_unload();
323 static inline void kmscon_text_load_all(void)
325 kmscon_text_bbulk_load();
326 kmscon_text_bblit_load();
327 kmscon_text_gltex_load();
330 static inline void kmscon_text_unload_all(void)
332 kmscon_text_gltex_unload();
333 kmscon_text_bblit_unload();
334 kmscon_text_bbulk_unload();
337 #endif /* KMSCON_TEXT_H */