/* GIMP - The GNU 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 3 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, see . */ #ifndef __GIMP_GRADIENT_H__ #define __GIMP_GRADIENT_H__ #include "gimpdata.h" #define GIMP_GRADIENT_DEFAULT_SAMPLE_SIZE 40 struct _GimpGradientSegment { gdouble left, middle, right; GimpGradientColor left_color_type; GimpRGB left_color; GimpGradientColor right_color_type; 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; }; struct _GimpGradientClass { GimpDataClass parent_class; }; GType gimp_gradient_get_type (void) G_GNUC_CONST; GimpData * gimp_gradient_new (GimpContext *context, const gchar *name); GimpData * gimp_gradient_get_standard (GimpContext *context); GimpGradientSegment * gimp_gradient_get_color_at (GimpGradient *gradient, GimpContext *context, GimpGradientSegment *seg, gdouble pos, gboolean reverse, GimpRGB *color); GimpGradientSegment * gimp_gradient_get_segment_at (GimpGradient *grad, gdouble pos); gboolean gimp_gradient_has_fg_bg_segments (GimpGradient *gradient); GimpGradient * gimp_gradient_flatten (GimpGradient *gradient, GimpContext *context); /* 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); GimpGradientSegment * gimp_gradient_segment_get_nth (GimpGradientSegment *seg, gint index); void gimp_gradient_segment_free (GimpGradientSegment *seg); void gimp_gradient_segments_free (GimpGradientSegment *seg); void gimp_gradient_segment_split_midpoint (GimpGradient *gradient, GimpContext *context, GimpGradientSegment *lseg, GimpGradientSegment **newl, GimpGradientSegment **newr); void gimp_gradient_segment_split_uniform (GimpGradient *gradient, GimpContext *context, GimpGradientSegment *lseg, gint parts, GimpGradientSegment **newl, GimpGradientSegment **newr); /* Colors Setting/Getting Routines */ void gimp_gradient_segment_get_left_color (GimpGradient *gradient, GimpGradientSegment *seg, GimpRGB *color); void gimp_gradient_segment_set_left_color (GimpGradient *gradient, GimpGradientSegment *seg, const GimpRGB *color); void gimp_gradient_segment_get_right_color (GimpGradient *gradient, GimpGradientSegment *seg, GimpRGB *color); void gimp_gradient_segment_set_right_color (GimpGradient *gradient, GimpGradientSegment *seg, const GimpRGB *color); GimpGradientColor gimp_gradient_segment_get_left_color_type (GimpGradient *gradient, GimpGradientSegment *seg); void gimp_gradient_segment_set_left_color_type (GimpGradient *gradient, GimpGradientSegment *seg, GimpGradientColor color_type); GimpGradientColor gimp_gradient_segment_get_right_color_type (GimpGradient *gradient, GimpGradientSegment *seg); void gimp_gradient_segment_set_right_color_type (GimpGradient *gradient, GimpGradientSegment *seg, GimpGradientColor color_type); /* Position Setting/Getting Routines */ /* (Setters return the position after it was set) */ gdouble gimp_gradient_segment_get_left_pos (GimpGradient *gradient, GimpGradientSegment *seg); gdouble gimp_gradient_segment_set_left_pos (GimpGradient *gradient, GimpGradientSegment *seg, gdouble pos); gdouble gimp_gradient_segment_get_right_pos (GimpGradient *gradient, GimpGradientSegment *seg); gdouble gimp_gradient_segment_set_right_pos (GimpGradient *gradient, GimpGradientSegment *seg, gdouble pos); gdouble gimp_gradient_segment_get_middle_pos (GimpGradient *gradient, GimpGradientSegment *seg); gdouble gimp_gradient_segment_set_middle_pos (GimpGradient *gradient, GimpGradientSegment *seg, gdouble pos); /* Getting/Setting the Blending Function/Coloring Type */ GimpGradientSegmentType gimp_gradient_segment_get_blending_function (GimpGradient *gradient, GimpGradientSegment *seg); GimpGradientSegmentColor gimp_gradient_segment_get_coloring_type (GimpGradient *gradient, GimpGradientSegment *seg); /* * If the second segment is NULL, these functions will process * until the end of the string. * */ void gimp_gradient_segment_range_compress (GimpGradient *gradient, GimpGradientSegment *range_l, GimpGradientSegment *range_r, gdouble new_l, gdouble new_r); void gimp_gradient_segment_range_blend (GimpGradient *gradient, GimpGradientSegment *lseg, GimpGradientSegment *rseg, const GimpRGB *rgb1, const GimpRGB *rgb2, gboolean blend_colors, gboolean blend_opacity); void gimp_gradient_segment_range_set_blending_function (GimpGradient *gradient, GimpGradientSegment *start_seg, GimpGradientSegment *end_seg, GimpGradientSegmentType new_type); void gimp_gradient_segment_range_set_coloring_type (GimpGradient *gradient, GimpGradientSegment *start_seg, GimpGradientSegment *end_seg, GimpGradientSegmentColor new_color); void gimp_gradient_segment_range_flip (GimpGradient *gradient, GimpGradientSegment *start_seg, GimpGradientSegment *end_seg, GimpGradientSegment **final_start_seg, GimpGradientSegment **final_end_seg); void gimp_gradient_segment_range_replicate (GimpGradient *gradient, GimpGradientSegment *start_seg, GimpGradientSegment *end_seg, gint replicate_times, GimpGradientSegment **final_start_seg, GimpGradientSegment **final_end_seg); void gimp_gradient_segment_range_split_midpoint (GimpGradient *gradient, GimpContext *context, GimpGradientSegment *start_seg, GimpGradientSegment *end_seg, GimpGradientSegment **final_start_seg, GimpGradientSegment **final_end_seg); void gimp_gradient_segment_range_split_uniform (GimpGradient *gradient, GimpContext *context, GimpGradientSegment *start_seg, GimpGradientSegment *end_seg, gint parts, GimpGradientSegment **final_start_seg, GimpGradientSegment **final_end_seg); void gimp_gradient_segment_range_delete (GimpGradient *gradient, GimpGradientSegment *start_seg, GimpGradientSegment *end_seg, GimpGradientSegment **final_start_seg, GimpGradientSegment **final_end_seg); void gimp_gradient_segment_range_recenter_handles (GimpGradient *gradient, GimpGradientSegment *start_seg, GimpGradientSegment *end_seg); void gimp_gradient_segment_range_redistribute_handles (GimpGradient *gradient, GimpGradientSegment *start_seg, GimpGradientSegment *end_seg); gdouble gimp_gradient_segment_range_move (GimpGradient *gradient, GimpGradientSegment *range_l, GimpGradientSegment *range_r, gdouble delta, gboolean control_compress); #endif /* __GIMP_GRADIENT_H__ */