File: autocrop.cpp

package info (click to toggle)
aseprite 1.0.5+ds-2
  • links: PTS, VCS
  • area: main
  • in suites: jessie, jessie-kfreebsd
  • size: 9,504 kB
  • ctags: 18,296
  • sloc: cpp: 84,144; ansic: 49,119; xml: 1,971; objc: 1,211; asm: 117; makefile: 45
file content (122 lines) | stat: -rw-r--r-- 4,130 bytes parent folder | download
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
/* Aseprite
 * Copyright (C) 2001-2013  David Capello
 *
 * 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
 */

#ifdef HAVE_CONFIG_H
#include "config.h"
#endif

#include "raster/image.h"
#include "raster/mask.h"
#include "raster/sprite.h"
#include "app/util/autocrop.h"

namespace app {

using namespace raster;

bool get_shrink_rect(int *x1, int *y1, int *x2, int *y2,
                     Image *image, int refpixel)
{
#define SHRINK_SIDE(u_begin, u_op, u_final, u_add,              \
                    v_begin, v_op, v_final, v_add, U, V, var)   \
  do {                                                          \
    for (u = u_begin; u u_op u_final; u u_add) {                \
      for (v = v_begin; v v_op v_final; v v_add) {              \
        if (image->getPixel(U, V) != refpixel)                  \
          break;                                                \
      }                                                         \
      if (v == v_final)                                         \
        var;                                                    \
      else                                                      \
        break;                                                  \
    }                                                           \
  } while (0)

  int u, v;

  *x1 = 0;
  *y1 = 0;
  *x2 = image->width()-1;
  *y2 = image->height()-1;

  SHRINK_SIDE(0, <, image->width(), ++,
              0, <, image->height(), ++, u, v, (*x1)++);

  SHRINK_SIDE(0, <, image->height(), ++,
              0, <, image->width(), ++, v, u, (*y1)++);

  SHRINK_SIDE(image->width()-1, >, 0, --,
              0, <, image->height(), ++, u, v, (*x2)--);

  SHRINK_SIDE(image->height()-1, >, 0, --,
              0, <, image->width(), ++, v, u, (*y2)--);

  if ((*x1 > *x2) || (*y1 > *y2))
    return false;
  else
    return true;

#undef SHRINK_SIDE
}

bool get_shrink_rect2(int *x1, int *y1, int *x2, int *y2,
                      Image *image, Image *refimage)
{
#define SHRINK_SIDE(u_begin, u_op, u_final, u_add,              \
                    v_begin, v_op, v_final, v_add, U, V, var)   \
  do {                                                          \
    for (u = u_begin; u u_op u_final; u u_add) {                \
      for (v = v_begin; v v_op v_final; v v_add) {              \
        if (image->getPixel(U, V) != refimage->getPixel(U, V))  \
          break;                                                \
      }                                                         \
      if (v == v_final)                                         \
        var;                                                    \
      else                                                      \
        break;                                                  \
    }                                                           \
  } while (0)

  int u, v;

  *x1 = 0;
  *y1 = 0;
  *x2 = image->width()-1;
  *y2 = image->height()-1;

  SHRINK_SIDE(0, <, image->width(), ++,
              0, <, image->height(), ++, u, v, (*x1)++);

  SHRINK_SIDE(0, <, image->height(), ++,
              0, <, image->width(), ++, v, u, (*y1)++);

  SHRINK_SIDE(image->width()-1, >, 0, --,
              0, <, image->height(), ++, u, v, (*x2)--);

  SHRINK_SIDE(image->height()-1, >, 0, --,
              0, <, image->width(), ++, v, u, (*y2)--);

  if ((*x1 > *x2) || (*y1 > *y2))
    return false;
  else
    return true;

#undef SHRINK_SIDE
}

} // namespace app