swfdec/swfdec_draw.h

   1 /* Swfdec
   2  * Copyright (C) 2007 Benjamin Otte <otte@gnome.org>
   3  *
   4  * This library is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU Lesser General Public
   6  * License as published by the Free Software Foundation; either
   7  * version 2.1 of the License, or (at your option) any later version.
   8  *
   9  * This library is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  * Lesser General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU Lesser General Public
  15  * License along with this library; if not, write to the Free Software
  16  * Foundation, Inc., 51 Franklin Street, Fifth Floor,
  17  * Boston, MA  02110-1301  USA
  18  */
  19
  20 #ifndef _SWFDEC_DRAW_H_
  21 #define _SWFDEC_DRAW_H_
  22
  23 #include <glib-object.h>
  24 #include <cairo.h>
  25 #include <swfdec/swfdec_swf_decoder.h>
  26 #include <swfdec/swfdec_color.h>
  27
  28 G_BEGIN_DECLS
  29
  30 //typedef struct _SwfdecDraw SwfdecDraw;
  31 typedef struct _SwfdecDrawClass SwfdecDrawClass;
  32
  33 #define SWFDEC_TYPE_DRAW                    (swfdec_draw_get_type())
  34 #define SWFDEC_IS_DRAW(obj)                 (G_TYPE_CHECK_INSTANCE_TYPE ((obj), SWFDEC_TYPE_DRAW))
  35 #define SWFDEC_IS_DRAW_CLASS(klass)         (G_TYPE_CHECK_CLASS_TYPE ((klass), SWFDEC_TYPE_DRAW))
  36 #define SWFDEC_DRAW(obj)                    (G_TYPE_CHECK_INSTANCE_CAST ((obj), SWFDEC_TYPE_DRAW, SwfdecDraw))
  37 #define SWFDEC_DRAW_CLASS(klass)            (G_TYPE_CHECK_CLASS_CAST ((klass), SWFDEC_TYPE_DRAW, SwfdecDrawClass))
  38 #define SWFDEC_DRAW_GET_CLASS(obj)          (G_TYPE_INSTANCE_GET_CLASS ((obj), SWFDEC_TYPE_DRAW, SwfdecDrawClass))
  39
  40 struct _SwfdecDraw
  41 {
  42   GObject               object;
  43
  44   /*< protected >*/
  45   gboolean              snap;           /* this drawing op does pixel snapping on the device grid */
  46   SwfdecRect            extents;        /* extents of path */
  47   cairo_path_t          path;           /* path to draw with this operation - in twips */
  48   cairo_path_t          end_path;       /* end path to draw with this operation if morph operation */
  49 };
  50
  51 struct _SwfdecDrawClass
  52 {
  53   GObjectClass          object_class;
  54
  55   /* morph this drawing operation using the given ratio */
  56   void                  (* morph)               (SwfdecDraw *                   dest,
  57                                                  SwfdecDraw *                   source,
  58                                                  guint                          ratio);
  59   /* paint the current drawing operation */
  60   void                  (* paint)               (SwfdecDraw *                   draw,
  61                                                  cairo_t *                      cr,
  62                                                  const SwfdecColorTransform *   trans);
  63   /* compute extents of this drawing op for the given movie */
  64   void                  (* compute_extents)     (SwfdecDraw *                   draw);
  65   /* check if the given coordinate is part of the area rendered to */
  66   gboolean              (* contains)            (SwfdecDraw *                   draw,
  67                                                  cairo_t *                      cr,
  68                                                  double                         x,
  69                                                  double                         y);
  70 };
  71
  72 GType           swfdec_draw_get_type            (void);
  73
  74 SwfdecDraw *    swfdec_draw_morph               (SwfdecDraw *                   draw,
  75                                                  guint                          ratio);
  76 void            swfdec_draw_paint               (SwfdecDraw *                   draw,
  77                                                  cairo_t *                      cr,
  78                                                  const SwfdecColorTransform *   trans);
  79 gboolean        swfdec_draw_contains            (SwfdecDraw *                   draw,
  80                                                  double                         x,
  81                                                  double                         y);
  82 void            swfdec_draw_recompute           (SwfdecDraw *                   draw);
  83
  84 G_END_DECLS
  85 #endif