git.rot13.org Git - simavr/blob - examples/shared/libc3/src/c3cairo.c

   1 /*
   2         c3cairo.c
   3
   4         Copyright 2008-2012 Michel Pollet <buserror@gmail.com>
   5
   6         This file is part of libc3.
   7
   8         libc3 is free software: you can redistribute it and/or modify
   9         it under the terms of the GNU General Public License as published by
  10         the Free Software Foundation, either version 3 of the License, or
  11         (at your option) any later version.
  12
  13         libc3 is distributed in the hope that it will be useful,
  14         but WITHOUT ANY WARRANTY; without even the implied warranty of
  15         MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16         GNU General Public License for more details.
  17
  18         You should have received a copy of the GNU General Public License
  19         along with libc3.  If not, see <http://www.gnu.org/licenses/>.
  20  */
  21
  22
  23 #include "c3cairo.h"
  24 #include "c3driver_geometry.h"
  25
  26 #if CONFIG_C3_CAIRO
  27
  28 void
  29 _c3cairo_dispose(
  30                 c3geometry_p g,
  31                 const c3driver_geometry_t * d)
  32 {
  33         c3cairo_p c = (c3cairo_p)g;
  34
  35         if (c->cr)
  36                 cairo_destroy(c->cr);
  37         if (c->surface)
  38                 cairo_surface_destroy(c->surface);
  39         C3_DRIVER_INHERITED(g, d, dispose);
  40 }
  41
  42 static void
  43 _c3cairo_project(
  44                 c3geometry_p g,
  45                 const struct c3driver_geometry_t *d,
  46                 c3mat4p m)
  47 {
  48         C3_DRIVER_INHERITED(g, d, project, m);
  49 }
  50
  51 const c3driver_geometry_t c3cairo_base_driver = {
  52         .dispose = _c3cairo_dispose,
  53         .project = _c3cairo_project,
  54 };
  55 extern const c3driver_geometry_t c3texture_driver;
  56 extern const c3driver_geometry_t c3geometry_driver;
  57
  58 c3cairo_p
  59 c3cairo_new(
  60                 struct c3object_t * parent)
  61 {
  62         c3cairo_p res = malloc(sizeof(*res));
  63         return c3cairo_init(res, parent);
  64 }
  65
  66 c3cairo_p
  67 c3cairo_init(
  68                 c3cairo_p o,
  69                 struct c3object_t * parent)
  70 {
  71         memset(o, 0, sizeof(*o));
  72         c3texture_init(&o->tex, parent);
  73
  74         static const c3driver_geometry_t * list[] = {
  75                         &c3cairo_base_driver, &c3texture_driver, &c3geometry_driver, NULL,
  76         };
  77         ((c3geometry_p)o)->driver = list;
  78
  79         return o;
  80 }
  81
  82 c3cairo_p
  83 c3cairo_new_offscreen(
  84                 struct c3object_t * parent,
  85                 int w, int h)
  86 {
  87         c3cairo_p o = c3cairo_new(parent);
  88
  89         o->surface = cairo_image_surface_create(CAIRO_FORMAT_ARGB32, w, h);
  90         o->cr = cairo_create(o->surface);
  91
  92         c3pixels_p dst = c3pixels_new(w, h, 4,
  93                         cairo_image_surface_get_stride(o->surface),
  94                         cairo_image_surface_get_data(o->surface));
  95         o->tex.geometry.mat.texture = dst;
  96
  97         return o;
  98 }
  99
 100 #if 0
 101 cairo_surface_destroy(_surface);
 102 else
 103 cairo_surface_finish(_surface);
 104 #endif
 105 #endif // CONFIG_C3_CAIRO