~ubuntu-branches/ubuntu/gutsy/gimp/gutsy-backports

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
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
/* 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 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.
 */

#include "config.h"

#include <gtk/gtk.h>

#include "libgimpwidgets/gimpwidgets.h"

#include "actions-types.h"

#include "core/gimpimage.h"
#include "core/gimplayer.h"
#include "core/gimplayermask.h"
#include "core/gimplist.h"

#include "text/gimptextlayer.h"

#include "widgets/gimphelp-ids.h"
#include "widgets/gimpactiongroup.h"

#include "actions.h"
#include "image-commands.h"
#include "layers-actions.h"
#include "layers-commands.h"

#include "gimp-intl.h"


static const GimpActionEntry layers_actions[] =
{
  { "layers-popup", GIMP_STOCK_LAYERS,
    N_("Layers Menu"), NULL, NULL, NULL,
    GIMP_HELP_LAYER_DIALOG },

  { "layers-menu",              NULL,                      N_("_Layer")        },
  { "layers-stack-menu",        NULL,                      N_("Stac_k")        },
  { "layers-text-to-selection-menu", GIMP_STOCK_TOOL_TEXT, N_("Te_xt to Selection") },
  { "layers-mask-menu",         NULL,                      N_("_Mask")         },
  { "layers-transparency-menu", NULL,                      N_("Tr_ansparency") },
  { "layers-transform-menu",    NULL,                      N_("_Transform")    },
  { "layers-properties-menu",   GTK_STOCK_PROPERTIES,      N_("_Properties")   },
  { "layers-opacity-menu",      GIMP_STOCK_TRANSPARENCY,   N_("_Opacity")      },
  { "layers-mode-menu",         GIMP_STOCK_TOOL_PENCIL,    N_("Layer _Mode")   },

  { "layers-text-tool", GIMP_STOCK_TOOL_TEXT,
    N_("Te_xt Tool"), NULL,
    N_("Activate the text tool on this text layer"),
    G_CALLBACK (layers_text_tool_cmd_callback),
    GIMP_HELP_TOOL_TEXT },

  { "layers-edit-attributes", GTK_STOCK_EDIT,
    N_("_Edit Layer Attributes..."), NULL,
    N_("Edit the layer's name"),
    G_CALLBACK (layers_edit_attributes_cmd_callback),
    GIMP_HELP_LAYER_EDIT },

  { "layers-new", GTK_STOCK_NEW,
    N_("_New Layer..."), "<control><shift>N",
    N_("Create a new layer and add it to the image"),
    G_CALLBACK (layers_new_cmd_callback),
    GIMP_HELP_LAYER_NEW },

  { "layers-new-last-values", GTK_STOCK_NEW,
    N_("_New Layer"), "",
    N_("Create a new layer with last used values"),
    G_CALLBACK (layers_new_last_vals_cmd_callback),
    GIMP_HELP_LAYER_NEW },

  { "layers-duplicate", GIMP_STOCK_DUPLICATE,
    N_("D_uplicate Layer"), "<control><shift>D",
    N_("Create a duplicate of the layer and add it to the image"),
    G_CALLBACK (layers_duplicate_cmd_callback),
    GIMP_HELP_LAYER_DUPLICATE },

  { "layers-delete", GTK_STOCK_DELETE,
    N_("_Delete Layer"), "",
    N_("Delete this layer"),
    G_CALLBACK (layers_delete_cmd_callback),
    GIMP_HELP_LAYER_DELETE },

  { "layers-raise", GTK_STOCK_GO_UP,
    N_("_Raise Layer"), "",
    N_("Raise this layer one step in the layer stack"),
    G_CALLBACK (layers_raise_cmd_callback),
    GIMP_HELP_LAYER_RAISE },

  { "layers-raise-to-top", GTK_STOCK_GOTO_TOP,
    N_("Layer to _Top"), "",
    N_("Move this layer to the top of the layer stack"),
    G_CALLBACK (layers_raise_to_top_cmd_callback),
    GIMP_HELP_LAYER_RAISE_TO_TOP },

  { "layers-lower", GTK_STOCK_GO_DOWN,
    N_("_Lower Layer"), "",
    N_("Lower this layer one step in the layer stack"),
    G_CALLBACK (layers_lower_cmd_callback),
    GIMP_HELP_LAYER_LOWER },

  { "layers-lower-to-bottom", GTK_STOCK_GOTO_BOTTOM,
    N_("Layer to _Bottom"), "",
    N_("Move this layer to the bottom of the layer stack"),
    G_CALLBACK (layers_lower_to_bottom_cmd_callback),
    GIMP_HELP_LAYER_LOWER_TO_BOTTOM },

  { "layers-anchor", GIMP_STOCK_ANCHOR,
    N_("_Anchor Layer"), "<control>H",
    N_("Anchor the floating layer"),
    G_CALLBACK (layers_anchor_cmd_callback),
    GIMP_HELP_LAYER_ANCHOR },

  { "layers-merge-down", GIMP_STOCK_MERGE_DOWN,
    N_("Merge Do_wn"), NULL,
    N_("Merge this layer with the one below it"),
    G_CALLBACK (layers_merge_down_cmd_callback),
    GIMP_HELP_LAYER_MERGE_DOWN },

  { "layers-merge-layers", NULL,
    N_("Merge _Visible Layers..."), NULL,
    N_("Merge all visible layers into one layer"),
    G_CALLBACK (image_merge_layers_cmd_callback),
    GIMP_HELP_IMAGE_MERGE_LAYERS },

  { "layers-flatten-image", NULL,
    N_("_Flatten Image"), NULL,
    N_("Merge all layers into one and remove transparency"),
    G_CALLBACK (image_flatten_image_cmd_callback),
    GIMP_HELP_IMAGE_FLATTEN },

  { "layers-text-discard", GIMP_STOCK_TOOL_TEXT,
    N_("_Discard Text Information"), NULL,
    N_("Turn this text layer into a normal layer"),
    G_CALLBACK (layers_text_discard_cmd_callback),
    GIMP_HELP_LAYER_TEXT_DISCARD },

  { "layers-text-to-vectors", GIMP_STOCK_TOOL_TEXT,
    N_("Text to _Path"), NULL,
    N_("Create a path from this text layer"),
    G_CALLBACK (layers_text_to_vectors_cmd_callback),
    GIMP_HELP_LAYER_TEXT_TO_PATH },

  { "layers-text-along-vectors", GIMP_STOCK_TOOL_TEXT,
    N_("Text alon_g Path"), NULL,
    N_("Warp this layer's text along the current path"),
    G_CALLBACK (layers_text_along_vectors_cmd_callback),
    GIMP_HELP_LAYER_TEXT_ALONG_PATH },

  { "layers-resize", GIMP_STOCK_RESIZE,
    N_("Layer B_oundary Size..."), NULL,
    N_("Adjust the layer dimensions"),
    G_CALLBACK (layers_resize_cmd_callback),
    GIMP_HELP_LAYER_RESIZE },

  { "layers-resize-to-image", GIMP_STOCK_LAYER_TO_IMAGESIZE,
    N_("Layer to _Image Size"), NULL,
    N_("Resize the layer to the size of the image"),
    G_CALLBACK (layers_resize_to_image_cmd_callback),
    GIMP_HELP_LAYER_RESIZE_TO_IMAGE },

  { "layers-scale", GIMP_STOCK_SCALE,
    N_("_Scale Layer..."), NULL,
    N_("Change the size of the layer content"),
    G_CALLBACK (layers_scale_cmd_callback),
    GIMP_HELP_LAYER_SCALE },

  { "layers-crop", GIMP_STOCK_TOOL_CROP,
    N_("_Crop to Selection"), NULL,
    N_("Crop the layer to the extents of the selection"),
    G_CALLBACK (layers_crop_cmd_callback),
    GIMP_HELP_LAYER_CROP },

  { "layers-mask-add", GIMP_STOCK_LAYER_MASK,
    N_("Add La_yer Mask..."), NULL,
    N_("Add a mask that allows non-destructive editing of transparency"),
    G_CALLBACK (layers_mask_add_cmd_callback),
    GIMP_HELP_LAYER_MASK_ADD },

  { "layers-alpha-add", GIMP_STOCK_TRANSPARENCY,
    N_("Add Alpha C_hannel"), NULL,
    N_("Add transparency information to the layer"),
    G_CALLBACK (layers_alpha_add_cmd_callback),
    GIMP_HELP_LAYER_ALPHA_ADD },

  { "layers-alpha-remove", NULL,
    N_("_Remove Alpha Channel"), NULL,
    N_("Remove transparency information from the layer"),
    G_CALLBACK (layers_alpha_remove_cmd_callback),
    GIMP_HELP_LAYER_ALPHA_REMOVE }
};

static const GimpToggleActionEntry layers_toggle_actions[] =
{
  { "layers-lock-alpha", GIMP_STOCK_TRANSPARENCY,
    N_("Lock Alph_a Channel"), NULL,
    N_("Keep transparency information on this layer from being modified"),
    G_CALLBACK (layers_lock_alpha_cmd_callback),
    FALSE,
    GIMP_HELP_LAYER_LOCK_ALPHA },

  { "layers-mask-edit", GTK_STOCK_EDIT,
    N_("_Edit Layer Mask"), NULL,
    N_("Work on the layer mask"),
    G_CALLBACK (layers_mask_edit_cmd_callback),
    FALSE,
    GIMP_HELP_LAYER_MASK_EDIT },

  { "layers-mask-show", GIMP_STOCK_VISIBLE,
    N_("S_how Layer Mask"), NULL, NULL,
    G_CALLBACK (layers_mask_show_cmd_callback),
    FALSE,
    GIMP_HELP_LAYER_MASK_SHOW },

  { "layers-mask-disable", NULL,
    N_("_Disable Layer Mask"), NULL,
    N_("Dismiss the effect of the layer mask"),
    G_CALLBACK (layers_mask_disable_cmd_callback),
    FALSE,
    GIMP_HELP_LAYER_MASK_DISABLE }
};

static const GimpEnumActionEntry layers_mask_apply_actions[] =
{
  { "layers-mask-apply", NULL,
    N_("Apply Layer _Mask"), NULL,
    N_("Apply the effect of the layer mask and remove it"),
    GIMP_MASK_APPLY, FALSE,
    GIMP_HELP_LAYER_MASK_APPLY },

  { "layers-mask-delete", GTK_STOCK_DELETE,
    N_("Delete Layer Mas_k"), "",
    N_("Remove the layer mask and its effect"),
    GIMP_MASK_DISCARD, FALSE,
    GIMP_HELP_LAYER_MASK_DELETE }
};

static const GimpEnumActionEntry layers_mask_to_selection_actions[] =
{
  { "layers-mask-selection-replace", GIMP_STOCK_SELECTION_REPLACE,
    N_("_Mask to Selection"), NULL,
    N_("Replace the selection with the layer mask"),
    GIMP_CHANNEL_OP_REPLACE, FALSE,
    GIMP_HELP_LAYER_MASK_SELECTION_REPLACE },

  { "layers-mask-selection-add", GIMP_STOCK_SELECTION_ADD,
    N_("_Add to Selection"), NULL,
    N_("Add the layer mask to the current selection"),
    GIMP_CHANNEL_OP_ADD, FALSE,
    GIMP_HELP_LAYER_MASK_SELECTION_ADD },

  { "layers-mask-selection-subtract", GIMP_STOCK_SELECTION_SUBTRACT,
    N_("_Subtract from Selection"), NULL,
    N_("Subtract the layer mask from the current selection"),
    GIMP_CHANNEL_OP_SUBTRACT, FALSE,
    GIMP_HELP_LAYER_MASK_SELECTION_SUBTRACT },

  { "layers-mask-selection-intersect", GIMP_STOCK_SELECTION_INTERSECT,
    N_("_Intersect with Selection"), NULL,
    N_("Intersect the layer mask with the current selection"),
    GIMP_CHANNEL_OP_INTERSECT, FALSE,
    GIMP_HELP_LAYER_MASK_SELECTION_INTERSECT }
};

static const GimpEnumActionEntry layers_alpha_to_selection_actions[] =
{
  { "layers-alpha-selection-replace", GIMP_STOCK_SELECTION_REPLACE,
    N_("Al_pha to Selection"), NULL,
    N_("Replace the selection with the layer's alpha channel"),
    GIMP_CHANNEL_OP_REPLACE, FALSE,
    GIMP_HELP_LAYER_ALPHA_SELECTION_REPLACE },

  { "layers-alpha-selection-add", GIMP_STOCK_SELECTION_ADD,
    N_("A_dd to Selection"), NULL,
    N_("Add the layer's alpha channel to the current selection"),
    GIMP_CHANNEL_OP_ADD, FALSE,
    GIMP_HELP_LAYER_ALPHA_SELECTION_ADD },

  { "layers-alpha-selection-subtract", GIMP_STOCK_SELECTION_SUBTRACT,
    N_("_Subtract from Selection"), NULL,
    N_("Subtract the layer's alpha channel from the current selection"),
    GIMP_CHANNEL_OP_SUBTRACT, FALSE,
    GIMP_HELP_LAYER_ALPHA_SELECTION_SUBTRACT },

  { "layers-alpha-selection-intersect", GIMP_STOCK_SELECTION_INTERSECT,
    N_("_Intersect with Selection"), NULL,
    N_("Intersect the layer's alpha channel with the current selection"),
    GIMP_CHANNEL_OP_INTERSECT, FALSE,
    GIMP_HELP_LAYER_ALPHA_SELECTION_INTERSECT }
};

static const GimpEnumActionEntry layers_text_to_selection_actions[] =
{
  { "layers-text-selection-replace", GIMP_STOCK_SELECTION_REPLACE,
    N_("_Text to Selection"), NULL,
    N_("Replace the selection with the text layer's outline"),
    GIMP_CHANNEL_OP_REPLACE, FALSE,
    GIMP_HELP_LAYER_TEXT_SELECTION_REPLACE },

  { "layers-text-selection-add", GIMP_STOCK_SELECTION_ADD,
    N_("A_dd to Selection"), NULL,
    N_("Add the text layer's outline to the current selection"),
    GIMP_CHANNEL_OP_ADD, FALSE,
    GIMP_HELP_LAYER_TEXT_SELECTION_ADD },

  { "layers-text-selection-subtract", GIMP_STOCK_SELECTION_SUBTRACT,
    N_("_Subtract from Selection"), NULL,
    N_("Subtract the text layer's outline from the current selection"),
    GIMP_CHANNEL_OP_SUBTRACT, FALSE,
    GIMP_HELP_LAYER_TEXT_SELECTION_SUBTRACT },

  { "layers-text-selection-intersect", GIMP_STOCK_SELECTION_INTERSECT,
    N_("_Intersect with Selection"), NULL,
    N_("Intersect the text layer's outline with the current selection"),
    GIMP_CHANNEL_OP_INTERSECT, FALSE,
    GIMP_HELP_LAYER_TEXT_SELECTION_INTERSECT }
};

static const GimpEnumActionEntry layers_select_actions[] =
{
  { "layers-select-top", NULL,
    N_("Select _Top Layer"), "Home",
    N_("Select the topmost layer"),
    GIMP_ACTION_SELECT_FIRST, FALSE,
    GIMP_HELP_LAYER_TOP },

  { "layers-select-bottom", NULL,
    N_("Select _Bottom Layer"), "End",
    N_("Select the bottommost layer"),
    GIMP_ACTION_SELECT_LAST, FALSE,
    GIMP_HELP_LAYER_BOTTOM },

  { "layers-select-previous", NULL,
    N_("Select _Previous Layer"), "Prior",
    N_("Select the layer above the current layer"),
    GIMP_ACTION_SELECT_PREVIOUS, FALSE,
    GIMP_HELP_LAYER_PREVIOUS },

  { "layers-select-next", NULL,
    N_("Select _Next Layer"), "Next",
    N_("Select the layer below the current layer"),
    GIMP_ACTION_SELECT_NEXT, FALSE,
    GIMP_HELP_LAYER_NEXT }
};

static const GimpEnumActionEntry layers_opacity_actions[] =
{
  { "layers-opacity-set", GIMP_STOCK_TRANSPARENCY,
    N_("Set Opacity"), NULL, NULL,
    GIMP_ACTION_SELECT_SET, TRUE,
    GIMP_HELP_LAYER_OPACITY },
  { "layers-opacity-transparent", GIMP_STOCK_TRANSPARENCY,
    "Completely Transparent", NULL, NULL,
    GIMP_ACTION_SELECT_FIRST, FALSE,
    GIMP_HELP_LAYER_OPACITY },
  { "layers-opacity-opaque", GIMP_STOCK_TRANSPARENCY,
    "Completely Opaque", NULL, NULL,
    GIMP_ACTION_SELECT_LAST, FALSE,
    GIMP_HELP_LAYER_OPACITY },
  { "layers-opacity-decrease", GIMP_STOCK_TRANSPARENCY,
    "More Transparent", NULL, NULL,
    GIMP_ACTION_SELECT_PREVIOUS, FALSE,
    GIMP_HELP_LAYER_OPACITY },
  { "layers-opacity-increase", GIMP_STOCK_TRANSPARENCY,
    "More Opaque", NULL, NULL,
    GIMP_ACTION_SELECT_NEXT, FALSE,
    GIMP_HELP_LAYER_OPACITY },
  { "layers-opacity-decrease-skip", GIMP_STOCK_TRANSPARENCY,
    "10% More Transparent", NULL, NULL,
    GIMP_ACTION_SELECT_SKIP_PREVIOUS, FALSE,
    GIMP_HELP_LAYER_OPACITY },
  { "layers-opacity-increase-skip", GIMP_STOCK_TRANSPARENCY,
    "10% More Opaque", NULL, NULL,
    GIMP_ACTION_SELECT_SKIP_NEXT, FALSE,
    GIMP_HELP_LAYER_OPACITY }
};

static const GimpEnumActionEntry layers_mode_actions[] =
{
  { "layers-mode-first", GIMP_STOCK_TOOL_PENCIL,
    "First Layer Mode", NULL, NULL,
    GIMP_ACTION_SELECT_FIRST, FALSE,
    GIMP_HELP_LAYER_MODE },
  { "layers-mode-last", GIMP_STOCK_TOOL_PENCIL,
    "Last Layer Mode", NULL, NULL,
    GIMP_ACTION_SELECT_LAST, FALSE,
    GIMP_HELP_LAYER_MODE },
  { "layers-mode-previous", GIMP_STOCK_TOOL_PENCIL,
    "Previous Layer Mode", NULL, NULL,
    GIMP_ACTION_SELECT_PREVIOUS, FALSE,
    GIMP_HELP_LAYER_MODE },
  { "layers-mode-next", GIMP_STOCK_TOOL_PENCIL,
    "Next Layer Mode", NULL, NULL,
    GIMP_ACTION_SELECT_NEXT, FALSE,
    GIMP_HELP_LAYER_MODE }
};


void
layers_actions_setup (GimpActionGroup *group)
{
  gimp_action_group_add_actions (group,
                                 layers_actions,
                                 G_N_ELEMENTS (layers_actions));

  gimp_action_group_add_toggle_actions (group,
                                        layers_toggle_actions,
                                        G_N_ELEMENTS (layers_toggle_actions));

  gimp_action_group_add_enum_actions (group,
                                      layers_mask_apply_actions,
                                      G_N_ELEMENTS (layers_mask_apply_actions),
                                      G_CALLBACK (layers_mask_apply_cmd_callback));

  gimp_action_group_add_enum_actions (group,
                                      layers_mask_to_selection_actions,
                                      G_N_ELEMENTS (layers_mask_to_selection_actions),
                                      G_CALLBACK (layers_mask_to_selection_cmd_callback));

  gimp_action_group_add_enum_actions (group,
                                      layers_alpha_to_selection_actions,
                                      G_N_ELEMENTS (layers_alpha_to_selection_actions),
                                      G_CALLBACK (layers_alpha_to_selection_cmd_callback));

  gimp_action_group_add_enum_actions (group,
                                      layers_text_to_selection_actions,
                                      G_N_ELEMENTS (layers_alpha_to_selection_actions),
                                      G_CALLBACK (layers_alpha_to_selection_cmd_callback));

  gimp_action_group_add_enum_actions (group,
                                      layers_select_actions,
                                      G_N_ELEMENTS (layers_select_actions),
                                      G_CALLBACK (layers_select_cmd_callback));

  gimp_action_group_add_enum_actions (group,
                                      layers_opacity_actions,
                                      G_N_ELEMENTS (layers_opacity_actions),
                                      G_CALLBACK (layers_opacity_cmd_callback));

  gimp_action_group_add_enum_actions (group,
                                      layers_mode_actions,
                                      G_N_ELEMENTS (layers_mode_actions),
                                      G_CALLBACK (layers_mode_cmd_callback));
}

void
layers_actions_update (GimpActionGroup *group,
                       gpointer         data)
{
  GimpImage     *image     = action_data_get_image (data);
  GimpLayer     *layer      = NULL;
  GimpLayerMask *mask       = NULL;     /*  layer mask             */
  gboolean       fs         = FALSE;    /*  floating sel           */
  gboolean       ac         = FALSE;    /*  active channel         */
  gboolean       sel        = FALSE;
  gboolean       alpha      = FALSE;    /*  alpha channel present  */
  gboolean       indexed    = FALSE;    /*  is indexed             */
  gboolean       lock_alpha = FALSE;
  gboolean       text_layer = FALSE;
  GList         *next       = NULL;
  GList         *prev       = NULL;

  if (image)
    {
      fs      = (gimp_image_floating_sel (image) != NULL);
      ac      = (gimp_image_get_active_channel (image) != NULL);
      sel     = ! gimp_channel_is_empty (gimp_image_get_mask (image));
      indexed = (gimp_image_base_type (image) == GIMP_INDEXED);

      layer = gimp_image_get_active_layer (image);

      if (layer)
        {
          GList *list;

          mask       = gimp_layer_get_mask (layer);
          lock_alpha = gimp_layer_get_lock_alpha (layer);
          alpha      = gimp_drawable_has_alpha (GIMP_DRAWABLE (layer));

          list = g_list_find (GIMP_LIST (image->layers)->list, layer);

          if (list)
            {
              prev = g_list_previous (list);
              next = g_list_next (list);
            }

          if (layer)
            text_layer = gimp_drawable_is_text_layer (GIMP_DRAWABLE (layer));
        }
    }

#define SET_VISIBLE(action,condition) \
        gimp_action_group_set_action_visible (group, action, (condition) != 0)
#define SET_SENSITIVE(action,condition) \
        gimp_action_group_set_action_sensitive (group, action, (condition) != 0)
#define SET_ACTIVE(action,condition) \
        gimp_action_group_set_action_active (group, action, (condition) != 0)

  SET_VISIBLE   ("layers-text-tool",       text_layer && !ac);
  SET_SENSITIVE ("layers-edit-attributes", layer && !fs && !ac);

  SET_SENSITIVE ("layers-new",             image);
  SET_SENSITIVE ("layers-new-last-values", image);
  SET_SENSITIVE ("layers-duplicate",       layer && !fs && !ac);
  SET_SENSITIVE ("layers-delete",          layer && !ac);

  SET_SENSITIVE ("layers-select-top",      layer && !fs && !ac && prev);
  SET_SENSITIVE ("layers-select-bottom",   layer && !fs && !ac && next);
  SET_SENSITIVE ("layers-select-previous", layer && !fs && !ac && prev);
  SET_SENSITIVE ("layers-select-next",     layer && !fs && !ac && next);

  SET_SENSITIVE ("layers-raise",           layer && !fs && !ac && prev);
  SET_SENSITIVE ("layers-raise-to-top",    layer && !fs && !ac && prev);
  SET_SENSITIVE ("layers-lower",           layer && !fs && !ac && next);
  SET_SENSITIVE ("layers-lower-to-bottom", layer && !fs && !ac && next);

  SET_SENSITIVE ("layers-anchor",          layer &&  fs && !ac);
  SET_SENSITIVE ("layers-merge-down",      layer && !fs && !ac && next);
  SET_SENSITIVE ("layers-merge-layers",    layer && !fs && !ac);
  SET_SENSITIVE ("layers-flatten-image",   layer && !fs && !ac);

  SET_VISIBLE   ("layers-text-discard",             text_layer && !ac);
  SET_VISIBLE   ("layers-text-to-vectors",          text_layer && !ac);
  SET_VISIBLE   ("layers-text-along-vectors",       text_layer && !ac);
  SET_VISIBLE   ("layers-text-selection-replace",   text_layer && !ac);
  SET_VISIBLE   ("layers-text-selection-add",       text_layer && !ac);
  SET_VISIBLE   ("layers-text-selection-subtract",  text_layer && !ac);
  SET_VISIBLE   ("layers-text-selection-intersect", text_layer && !ac);

  SET_SENSITIVE ("layers-resize",          layer && !ac);
  SET_SENSITIVE ("layers-resize-to-image", layer && !ac);
  SET_SENSITIVE ("layers-scale",           layer && !ac);

  SET_SENSITIVE ("layers-crop",            layer && sel);

  SET_SENSITIVE ("layers-alpha-add",       layer && !fs && !alpha);
  SET_SENSITIVE ("layers-alpha-remove",    layer && !fs &&  alpha);

  SET_SENSITIVE ("layers-lock-alpha", layer);
  SET_ACTIVE    ("layers-lock-alpha", lock_alpha);

  SET_SENSITIVE ("layers-mask-add",    layer && !fs && !ac && !mask);
  SET_SENSITIVE ("layers-mask-apply",  layer && !fs && !ac &&  mask);
  SET_SENSITIVE ("layers-mask-delete", layer && !fs && !ac &&  mask);

  SET_SENSITIVE ("layers-mask-edit",    layer && !fs && !ac &&  mask);
  SET_SENSITIVE ("layers-mask-show",    layer && !fs && !ac &&  mask);
  SET_SENSITIVE ("layers-mask-disable", layer && !fs && !ac &&  mask);

  SET_ACTIVE ("layers-mask-edit",    mask && gimp_layer_mask_get_edit (mask));
  SET_ACTIVE ("layers-mask-show",    mask && gimp_layer_mask_get_show (mask));
  SET_ACTIVE ("layers-mask-disable", mask && !gimp_layer_mask_get_apply (mask));

  SET_SENSITIVE ("layers-mask-selection-replace",   layer && !fs && !ac && mask);
  SET_SENSITIVE ("layers-mask-selection-add",       layer && !fs && !ac && mask);
  SET_SENSITIVE ("layers-mask-selection-subtract",  layer && !fs && !ac && mask);
  SET_SENSITIVE ("layers-mask-selection-intersect", layer && !fs && !ac && mask);

  SET_SENSITIVE ("layers-alpha-selection-replace",   layer && !fs && !ac);
  SET_SENSITIVE ("layers-alpha-selection-add",       layer && !fs && !ac);
  SET_SENSITIVE ("layers-alpha-selection-subtract",  layer && !fs && !ac);
  SET_SENSITIVE ("layers-alpha-selection-intersect", layer && !fs && !ac);

#undef SET_VISIBLE
#undef SET_SENSITIVE
#undef SET_ACTIVE
}