Pileus Git - ~andy/gtk/blob - gdk-pixbuf/gdk-pixbuf-transform.h

   1 /* GdkPixbuf library - transformations
   2  *
   3  * Copyright (C) 2003 The Free Software Foundation
   4  *
   5  * Authors: Mark Crichton <crichton@gimp.org>
   6  *          Miguel de Icaza <miguel@gnu.org>
   7  *          Federico Mena-Quintero <federico@gimp.org>
   8  *          Havoc Pennington <hp@redhat.com>
   9  *
  10  * This library is free software; you can redistribute it and/or
  11  * modify it under the terms of the GNU Lesser General Public
  12  * License as published by the Free Software Foundation; either
  13  * version 2 of the License, or (at your option) any later version.
  14  *
  15  * This library is distributed in the hope that it will be useful,
  16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  18  * Lesser General Public License for more details.
  19  *
  20  * You should have received a copy of the GNU Lesser General Public
  21  * License along with this library; if not, write to the
  22  * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  23  * Boston, MA 02111-1307, USA.
  24  */
  25
  26 #if !defined (GDK_PIXBUF_H_INSIDE) && !defined (GDK_PIXBUF_COMPILATION)
  27 #error "Only <gdk-pixbuf/gdk-pixbuf.h> can be included directly."
  28 #endif
  29
  30 #ifndef GDK_PIXBUF_TRANSFORM_H
  31 #define GDK_PIXBUF_TRANSFORM_H
  32
  33 #include <glib.h>
  34 #include <gdk-pixbuf/gdk-pixbuf-core.h>
  35
  36
  37 G_BEGIN_DECLS
  38
  39 /* Scaling */
  40
  41 /* Interpolation modes */
  42 typedef enum {
  43         GDK_INTERP_NEAREST,
  44         GDK_INTERP_TILES,
  45         GDK_INTERP_BILINEAR,
  46         GDK_INTERP_HYPER
  47 } GdkInterpType;
  48
  49 typedef enum {
  50         GDK_PIXBUF_ROTATE_NONE             =   0,
  51         GDK_PIXBUF_ROTATE_COUNTERCLOCKWISE =  90,
  52         GDK_PIXBUF_ROTATE_UPSIDEDOWN       = 180,
  53         GDK_PIXBUF_ROTATE_CLOCKWISE        = 270
  54 } GdkPixbufRotation;
  55
  56 void gdk_pixbuf_scale           (const GdkPixbuf *src,
  57                                  GdkPixbuf       *dest,
  58                                  int              dest_x,
  59                                  int              dest_y,
  60                                  int              dest_width,
  61                                  int              dest_height,
  62                                  double           offset_x,
  63                                  double           offset_y,
  64                                  double           scale_x,
  65                                  double           scale_y,
  66                                  GdkInterpType    interp_type);
  67 void gdk_pixbuf_composite       (const GdkPixbuf *src,
  68                                  GdkPixbuf       *dest,
  69                                  int              dest_x,
  70                                  int              dest_y,
  71                                  int              dest_width,
  72                                  int              dest_height,
  73                                  double           offset_x,
  74                                  double           offset_y,
  75                                  double           scale_x,
  76                                  double           scale_y,
  77                                  GdkInterpType    interp_type,
  78                                  int              overall_alpha);
  79 void gdk_pixbuf_composite_color (const GdkPixbuf *src,
  80                                  GdkPixbuf       *dest,
  81                                  int              dest_x,
  82                                  int              dest_y,
  83                                  int              dest_width,
  84                                  int              dest_height,
  85                                  double           offset_x,
  86                                  double           offset_y,
  87                                  double           scale_x,
  88                                  double           scale_y,
  89                                  GdkInterpType    interp_type,
  90                                  int              overall_alpha,
  91                                  int              check_x,
  92                                  int              check_y,
  93                                  int              check_size,
  94                                  guint32          color1,
  95                                  guint32          color2);
  96
  97 GdkPixbuf *gdk_pixbuf_scale_simple           (const GdkPixbuf *src,
  98                                               int              dest_width,
  99                                               int              dest_height,
 100                                               GdkInterpType    interp_type);
 101
 102 GdkPixbuf *gdk_pixbuf_composite_color_simple (const GdkPixbuf *src,
 103                                               int              dest_width,
 104                                               int              dest_height,
 105                                               GdkInterpType    interp_type,
 106                                               int              overall_alpha,
 107                                               int              check_size,
 108                                               guint32          color1,
 109                                               guint32          color2);
 110
 111 GdkPixbuf *gdk_pixbuf_rotate_simple          (const GdkPixbuf   *src,
 112                                               GdkPixbufRotation  angle);
 113 GdkPixbuf *gdk_pixbuf_flip                   (const GdkPixbuf   *src,
 114                                               gboolean           horizontal);
 115
 116 G_END_DECLS
 117
 118
 119 #endif  /* GDK_PIXBUF_TRANSFORM_H */