mirror of https://github.com/GNOME/gimp.git
122 lines
5.2 KiB
C
122 lines
5.2 KiB
C
/* The GIMP -- an image manipulation program
|
|
* Copyright (C) 1995 Spencer Kimball and Peter Mattis
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 2 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This program 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 General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software
|
|
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
|
|
*/
|
|
|
|
#ifndef __GIMP_GRADIENT_H__
|
|
#define __GIMP_GRADIENT_H__
|
|
|
|
|
|
#include "gimpdata.h"
|
|
|
|
|
|
#define GIMP_GRADIENT_FILE_EXTENSION ".ggr"
|
|
|
|
#define GIMP_GRADIENT_DEFAULT_SAMPLE_SIZE 40
|
|
|
|
|
|
struct _GimpGradientSegment
|
|
{
|
|
gdouble left, middle, right;
|
|
GimpRGB left_color;
|
|
GimpRGB right_color;
|
|
GimpGradientSegmentType type; /* Segment's blending function */
|
|
GimpGradientSegmentColor color; /* Segment's coloring type */
|
|
|
|
GimpGradientSegment *prev;
|
|
GimpGradientSegment *next;
|
|
};
|
|
|
|
|
|
#define GIMP_TYPE_GRADIENT (gimp_gradient_get_type ())
|
|
#define GIMP_GRADIENT(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), GIMP_TYPE_GRADIENT, GimpGradient))
|
|
#define GIMP_GRADIENT_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), GIMP_TYPE_GRADIENT, GimpGradientClass))
|
|
#define GIMP_IS_GRADIENT(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GIMP_TYPE_GRADIENT))
|
|
#define GIMP_IS_GRADIENT_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), GIMP_TYPE_GRADIENT))
|
|
#define GIMP_GRADIENT_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), GIMP_TYPE_GRADIENT, GimpGradientClass))
|
|
|
|
|
|
typedef struct _GimpGradientClass GimpGradientClass;
|
|
|
|
struct _GimpGradient
|
|
{
|
|
GimpData parent_instance;
|
|
|
|
GimpGradientSegment *segments;
|
|
|
|
/*< private >*/
|
|
GimpGradientSegment *last_visited;
|
|
};
|
|
|
|
struct _GimpGradientClass
|
|
{
|
|
GimpDataClass parent_class;
|
|
};
|
|
|
|
|
|
GType gimp_gradient_get_type (void) G_GNUC_CONST;
|
|
|
|
GimpData * gimp_gradient_new (const gchar *name,
|
|
gboolean stingy_memory_use);
|
|
GimpData * gimp_gradient_get_standard (void);
|
|
GimpData * gimp_gradient_load (const gchar *filename,
|
|
gboolean stingy_memory_use,
|
|
GError **error);
|
|
|
|
gboolean gimp_gradient_save_as_pov (GimpGradient *gradient,
|
|
const gchar *filename,
|
|
GError **error);
|
|
|
|
void gimp_gradient_get_color_at (GimpGradient *gradient,
|
|
gdouble pos,
|
|
gboolean reverse,
|
|
GimpRGB *color);
|
|
GimpGradientSegment * gimp_gradient_get_segment_at (GimpGradient *grad,
|
|
gdouble pos);
|
|
|
|
|
|
/* gradient segment functions */
|
|
|
|
GimpGradientSegment * gimp_gradient_segment_new (void);
|
|
GimpGradientSegment * gimp_gradient_segment_get_last (GimpGradientSegment *seg);
|
|
GimpGradientSegment * gimp_gradient_segment_get_first (GimpGradientSegment *seg);
|
|
|
|
void gimp_gradient_segment_free (GimpGradientSegment *seg);
|
|
void gimp_gradient_segments_free (GimpGradientSegment *seg);
|
|
|
|
void gimp_gradient_segment_split_midpoint (GimpGradient *gradient,
|
|
GimpGradientSegment *lseg,
|
|
GimpGradientSegment **newl,
|
|
GimpGradientSegment **newr);
|
|
void gimp_gradient_segment_split_uniform (GimpGradient *gradient,
|
|
GimpGradientSegment *lseg,
|
|
gint parts,
|
|
GimpGradientSegment **newl,
|
|
GimpGradientSegment **newr);
|
|
|
|
void gimp_gradient_segments_compress_range (GimpGradientSegment *range_l,
|
|
GimpGradientSegment *range_r,
|
|
gdouble new_l,
|
|
gdouble new_r);
|
|
void gimp_gradient_segments_blend_endpoints (GimpGradientSegment *lseg,
|
|
GimpGradientSegment *rseg,
|
|
GimpRGB *rgb1,
|
|
GimpRGB *rgb2,
|
|
gboolean blend_colors,
|
|
gboolean blend_opacity);
|
|
|
|
#endif /* __GIMP_GRADIENT_H__ */
|