79c5ba7185
This is an experimental renderer based on pixman. It is only available for testing-purposes and should not be used in production, yet. The bbulk renderer is still the faster alternative and should be used instead. Signed-off-by: David Herrmann <dh.herrmann@googlemail.com>
120 lines
4.0 KiB
C
120 lines
4.0 KiB
C
/*
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* kmscon - Text Renderer
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*
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* Copyright (c) 2012-2013 David Herrmann <dh.herrmann@googlemail.com>
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*
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* Permission is hereby granted, free of charge, to any person obtaining
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* a copy of this software and associated documentation files
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* (the "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sublicense, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice shall be included
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* in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
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* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
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* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
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* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
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* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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/*
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* Text Renderer
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* The Text-Renderer subsystem provides a simple way to draw text into a
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* framebuffer. The system is modular and several different backends are
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* available that can be used.
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*/
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#ifndef KMSCON_TEXT_H
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#define KMSCON_TEXT_H
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#include <errno.h>
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#include <stdlib.h>
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#include "font.h"
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#include "kmscon_module.h"
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#include "tsm_screen.h"
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#include "uterm_video.h"
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/* text renderer */
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struct kmscon_text;
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struct kmscon_text_ops;
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struct kmscon_text {
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unsigned long ref;
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struct shl_register_record *record;
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const struct kmscon_text_ops *ops;
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void *data;
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struct kmscon_font *font;
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struct kmscon_font *bold_font;
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struct uterm_display *disp;
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unsigned int cols;
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unsigned int rows;
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bool rendering;
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};
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struct kmscon_text_ops {
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const char *name;
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struct kmscon_module *owner;
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int (*init) (struct kmscon_text *txt);
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void (*destroy) (struct kmscon_text *txt);
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int (*set) (struct kmscon_text *txt);
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void (*unset) (struct kmscon_text *txt);
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int (*prepare) (struct kmscon_text *txt);
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int (*draw) (struct kmscon_text *txt,
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uint32_t id, const uint32_t *ch, size_t len,
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unsigned int width,
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unsigned int posx, unsigned int posy,
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const struct tsm_screen_attr *attr);
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int (*render) (struct kmscon_text *txt);
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void (*abort) (struct kmscon_text *txt);
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};
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int kmscon_text_register(const struct kmscon_text_ops *ops);
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void kmscon_text_unregister(const char *name);
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int kmscon_text_new(struct kmscon_text **out, const char *backend);
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void kmscon_text_ref(struct kmscon_text *txt);
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void kmscon_text_unref(struct kmscon_text *txt);
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int kmscon_text_set(struct kmscon_text *txt,
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struct kmscon_font *font,
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struct kmscon_font *bold_font,
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struct uterm_display *disp);
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void kmscon_text_unset(struct kmscon_text *txt);
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unsigned int kmscon_text_get_cols(struct kmscon_text *txt);
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unsigned int kmscon_text_get_rows(struct kmscon_text *txt);
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int kmscon_text_prepare(struct kmscon_text *txt);
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int kmscon_text_draw(struct kmscon_text *txt,
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uint32_t id, const uint32_t *ch, size_t len,
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unsigned int width,
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unsigned int posx, unsigned int posy,
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const struct tsm_screen_attr *attr);
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int kmscon_text_render(struct kmscon_text *txt);
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void kmscon_text_abort(struct kmscon_text *txt);
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int kmscon_text_prepare_cb(struct tsm_screen *con, void *data);
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int kmscon_text_draw_cb(struct tsm_screen *con,
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uint32_t id, const uint32_t *ch, size_t len,
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unsigned int width,
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unsigned int posx, unsigned int posy,
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const struct tsm_screen_attr *attr, void *data);
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int kmscon_text_render_cb(struct tsm_screen *con, void *data);
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/* modularized backends */
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extern struct kmscon_text_ops kmscon_text_bblit_ops;
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extern struct kmscon_text_ops kmscon_text_bbulk_ops;
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extern struct kmscon_text_ops kmscon_text_gltex_ops;
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extern struct kmscon_text_ops kmscon_text_cairo_ops;
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extern struct kmscon_text_ops kmscon_text_pixman_ops;
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#endif /* KMSCON_TEXT_H */
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