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
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
|
/* 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 <https://www.gnu.org/licenses/>.
*/
#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,
GimpGradientBlendColorSpace blend_color_space,
GimpRGB *color);
GimpGradientSegment * gimp_gradient_get_segment_at (GimpGradient *grad,
gdouble pos);
void gimp_gradient_split_at (GimpGradient *gradient,
GimpContext *context,
GimpGradientSegment *seg,
gdouble pos,
GimpGradientBlendColorSpace blend_color_space,
GimpGradientSegment **newl,
GimpGradientSegment **newr);
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,
GimpGradientBlendColorSpace blend_color_space,
GimpGradientSegment **newl,
GimpGradientSegment **newr);
void gimp_gradient_segment_split_uniform (GimpGradient *gradient,
GimpContext *context,
GimpGradientSegment *lseg,
gint parts,
GimpGradientBlendColorSpace blend_color_space,
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);
void
gimp_gradient_segment_get_left_flat_color (GimpGradient *gradient,
GimpContext *context,
GimpGradientSegment *seg,
GimpRGB *color);
void
gimp_gradient_segment_get_right_flat_color (GimpGradient *gradient,
GimpContext *context,
GimpGradientSegment *seg,
GimpRGB *color);
/* 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.
* */
gint gimp_gradient_segment_range_get_n_segments
(GimpGradient *gradient,
GimpGradientSegment *range_l,
GimpGradientSegment *range_r);
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,
GimpGradientBlendColorSpace blend_color_space,
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,
GimpGradientBlendColorSpace blend_color_space,
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_merge (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__ */
|
