/usr/include/gdk-pixbuf-2.0/gdk-pixbuf/gdk-pixbuf-transform.h is in libgdk-pixbuf2.0-dev 2.30.7-0ubuntu1.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 | /* GdkPixbuf library - transformations
*
* Copyright (C) 2003 The Free Software Foundation
*
* Authors: Mark Crichton <crichton@gimp.org>
* Miguel de Icaza <miguel@gnu.org>
* Federico Mena-Quintero <federico@gimp.org>
* Havoc Pennington <hp@redhat.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, see <http://www.gnu.org/licenses/>.
*/
#ifndef GDK_PIXBUF_TRANSFORM_H
#define GDK_PIXBUF_TRANSFORM_H
#if defined(GDK_PIXBUF_DISABLE_SINGLE_INCLUDES) && !defined (GDK_PIXBUF_H_INSIDE) && !defined (GDK_PIXBUF_COMPILATION)
#error "Only <gdk-pixbuf/gdk-pixbuf.h> can be included directly."
#endif
#include <glib.h>
#include <gdk-pixbuf/gdk-pixbuf-core.h>
G_BEGIN_DECLS
/* Scaling */
/**
* GdkInterpType:
* @GDK_INTERP_NEAREST: Nearest neighbor sampling; this is the fastest
* and lowest quality mode. Quality is normally unacceptable when scaling
* down, but may be OK when scaling up.
* @GDK_INTERP_TILES: This is an accurate simulation of the PostScript
* image operator without any interpolation enabled. Each pixel is
* rendered as a tiny parallelogram of solid color, the edges of which
* are implemented with antialiasing. It resembles nearest neighbor for
* enlargement, and bilinear for reduction.
* @GDK_INTERP_BILINEAR: Best quality/speed balance; use this mode by
* default. Bilinear interpolation. For enlargement, it is
* equivalent to point-sampling the ideal bilinear-interpolated image.
* For reduction, it is equivalent to laying down small tiles and
* integrating over the coverage area.
* @GDK_INTERP_HYPER: This is the slowest and highest quality
* reconstruction function. It is derived from the hyperbolic filters in
* Wolberg's "Digital Image Warping", and is formally defined as the
* hyperbolic-filter sampling the ideal hyperbolic-filter interpolated
* image (the filter is designed to be idempotent for 1:1 pixel mapping).
*
* This enumeration describes the different interpolation modes that
* can be used with the scaling functions. @GDK_INTERP_NEAREST is
* the fastest scaling method, but has horrible quality when
* scaling down. @GDK_INTERP_BILINEAR is the best choice if you
* aren't sure what to choose, it has a good speed/quality balance.
*
* <note>
* Cubic filtering is missing from the list; hyperbolic
* interpolation is just as fast and results in higher quality.
* </note>
*/
typedef enum {
GDK_INTERP_NEAREST,
GDK_INTERP_TILES,
GDK_INTERP_BILINEAR,
GDK_INTERP_HYPER
} GdkInterpType;
/**
* GdkPixbufRotation:
* @GDK_PIXBUF_ROTATE_NONE: No rotation.
* @GDK_PIXBUF_ROTATE_COUNTERCLOCKWISE: Rotate by 90 degrees.
* @GDK_PIXBUF_ROTATE_UPSIDEDOWN: Rotate by 180 degrees.
* @GDK_PIXBUF_ROTATE_CLOCKWISE: Rotate by 270 degrees.
*
* The possible rotations which can be passed to gdk_pixbuf_rotate_simple().
* To make them easier to use, their numerical values are the actual degrees.
*/
typedef enum {
GDK_PIXBUF_ROTATE_NONE = 0,
GDK_PIXBUF_ROTATE_COUNTERCLOCKWISE = 90,
GDK_PIXBUF_ROTATE_UPSIDEDOWN = 180,
GDK_PIXBUF_ROTATE_CLOCKWISE = 270
} GdkPixbufRotation;
void gdk_pixbuf_scale (const GdkPixbuf *src,
GdkPixbuf *dest,
int dest_x,
int dest_y,
int dest_width,
int dest_height,
double offset_x,
double offset_y,
double scale_x,
double scale_y,
GdkInterpType interp_type);
void gdk_pixbuf_composite (const GdkPixbuf *src,
GdkPixbuf *dest,
int dest_x,
int dest_y,
int dest_width,
int dest_height,
double offset_x,
double offset_y,
double scale_x,
double scale_y,
GdkInterpType interp_type,
int overall_alpha);
void gdk_pixbuf_composite_color (const GdkPixbuf *src,
GdkPixbuf *dest,
int dest_x,
int dest_y,
int dest_width,
int dest_height,
double offset_x,
double offset_y,
double scale_x,
double scale_y,
GdkInterpType interp_type,
int overall_alpha,
int check_x,
int check_y,
int check_size,
guint32 color1,
guint32 color2);
GdkPixbuf *gdk_pixbuf_scale_simple (const GdkPixbuf *src,
int dest_width,
int dest_height,
GdkInterpType interp_type);
GdkPixbuf *gdk_pixbuf_composite_color_simple (const GdkPixbuf *src,
int dest_width,
int dest_height,
GdkInterpType interp_type,
int overall_alpha,
int check_size,
guint32 color1,
guint32 color2);
GdkPixbuf *gdk_pixbuf_rotate_simple (const GdkPixbuf *src,
GdkPixbufRotation angle);
GdkPixbuf *gdk_pixbuf_flip (const GdkPixbuf *src,
gboolean horizontal);
G_END_DECLS
#endif /* GDK_PIXBUF_TRANSFORM_H */
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