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
}
static GimpLayer *
gimp_image_merge_layers (GimpImage *image,
GSList *merge_list,
GimpContext *context,
GimpMergeType merge_type,
const gchar *undo_desc)
{
GList *list;
GSList *reverse_list = NULL;
PixelRegion src1PR, src2PR, maskPR;
PixelRegion *mask;
GimpLayer *merge_layer;
GimpLayer *layer;
GimpLayer *bottom_layer;
GimpImageType type;
gint count;
gint x1, y1, x2, y2;
gint x3, y3, x4, y4;
CombinationMode operation;
gint position;
gboolean active[MAX_CHANNELS] = { TRUE, TRUE, TRUE, TRUE };
gint off_x, off_y;
gchar *name;
g_return_val_if_fail (GIMP_IS_IMAGE (image), NULL);
g_return_val_if_fail (GIMP_IS_CONTEXT (context), NULL);
layer = NULL;
type = GIMP_RGBA_IMAGE;
x1 = y1 = 0;
x2 = y2 = 0;
bottom_layer = NULL;
/* Get the layer extents */
count = 0;
while (merge_list)
{
layer = merge_list->data;
gimp_item_offsets (GIMP_ITEM (layer), &off_x, &off_y);
switch (merge_type)
{
case GIMP_EXPAND_AS_NECESSARY:
case GIMP_CLIP_TO_IMAGE:
if (! count)
{
x1 = off_x;
y1 = off_y;
x2 = off_x + gimp_item_width (GIMP_ITEM (layer));
y2 = off_y + gimp_item_height (GIMP_ITEM (layer));
}
else
{
if (off_x < x1)
x1 = off_x;
if (off_y < y1)
y1 = off_y;
if ((off_x + gimp_item_width (GIMP_ITEM (layer))) > x2)
x2 = (off_x + gimp_item_width (GIMP_ITEM (layer)));
if ((off_y + gimp_item_height (GIMP_ITEM (layer))) > y2)
y2 = (off_y + gimp_item_height (GIMP_ITEM (layer)));
}
if (merge_type == GIMP_CLIP_TO_IMAGE)
{
x1 = CLAMP (x1, 0, gimp_image_get_width (image));
y1 = CLAMP (y1, 0, gimp_image_get_height (image));
x2 = CLAMP (x2, 0, gimp_image_get_width (image));
y2 = CLAMP (y2, 0, gimp_image_get_height (image));
}
break;
case GIMP_CLIP_TO_BOTTOM_LAYER:
if (merge_list->next == NULL)
{
x1 = off_x;
y1 = off_y;
x2 = off_x + gimp_item_width (GIMP_ITEM (layer));
y2 = off_y + gimp_item_height (GIMP_ITEM (layer));
}
break;
case GIMP_FLATTEN_IMAGE:
if (merge_list->next == NULL)
{
x1 = 0;
y1 = 0;
x2 = gimp_image_get_width (image);
y2 = gimp_image_get_height (image);
}
break;
}
count ++;
reverse_list = g_slist_prepend (reverse_list, layer);
merge_list = g_slist_next (merge_list);
}
if ((x2 - x1) == 0 || (y2 - y1) == 0)
return NULL;
/* Start a merge undo group. */
gimp_image_undo_group_start (image, GIMP_UNDO_GROUP_IMAGE_LAYERS_MERGE,
undo_desc);
name = g_strdup (gimp_object_get_name (GIMP_OBJECT (layer)));
if (merge_type == GIMP_FLATTEN_IMAGE ||
gimp_drawable_type (GIMP_DRAWABLE (layer)) == GIMP_INDEXED_IMAGE)
{
guchar bg[4] = { 0, 0, 0, 0 };
type = GIMP_IMAGE_TYPE_FROM_BASE_TYPE (gimp_image_base_type (image));
merge_layer = gimp_layer_new (image, (x2 - x1), (y2 - y1),
type,
gimp_object_get_name (GIMP_OBJECT (layer)),
GIMP_OPACITY_OPAQUE, GIMP_NORMAL_MODE);
if (! merge_layer)
{
g_warning ("%s: could not allocate merge layer.", G_STRFUNC);
return NULL;
}
GIMP_ITEM (merge_layer)->offset_x = x1;
GIMP_ITEM (merge_layer)->offset_y = y1;
/* get the background for compositing */
gimp_image_get_background (image, context,
gimp_drawable_type (GIMP_DRAWABLE (merge_layer)),
bg);
/* init the pixel region */
pixel_region_init (&src1PR,
gimp_drawable_get_tiles (GIMP_DRAWABLE (merge_layer)),
0, 0, (x2 - x1), (y2 - y1),
TRUE);
/* set the region to the background color */
color_region (&src1PR, bg);
position = 0;
}
else
{
/* The final merged layer inherits the name of the bottom most layer
* and the resulting layer has an alpha channel whether or not the
* original did. Opacity is set to 100% and the MODE is set to normal.
*/
merge_layer =
gimp_layer_new (image, (x2 - x1), (y2 - y1),
gimp_drawable_type_with_alpha (GIMP_DRAWABLE (layer)),
"merged layer",
GIMP_OPACITY_OPAQUE, GIMP_NORMAL_MODE);
if (!merge_layer)
{
g_warning ("%s: could not allocate merge layer", G_STRFUNC);
return NULL;
}
GIMP_ITEM (merge_layer)->offset_x = x1;
GIMP_ITEM (merge_layer)->offset_y = y1;
/* clear the layer */
pixel_region_init (&src1PR,
gimp_drawable_get_tiles (GIMP_DRAWABLE (merge_layer)),
0, 0,
(x2 - x1), (y2 - y1),
TRUE);
clear_region (&src1PR);
/* Find the index in the layer list of the bottom layer--we need this
* in order to add the final, merged layer to the layer list correctly
*/
layer = reverse_list->data;
position =
gimp_container_num_children (image->layers) -
gimp_container_get_child_index (image->layers, GIMP_OBJECT (layer));
}
bottom_layer = layer;
/* Copy the tattoo and parasites of the bottom layer to the new layer */
gimp_item_set_tattoo (GIMP_ITEM (merge_layer),
gimp_item_get_tattoo (GIMP_ITEM (bottom_layer)));
g_object_unref (GIMP_ITEM (merge_layer)->parasites);
GIMP_ITEM (merge_layer)->parasites =
gimp_parasite_list_copy (GIMP_ITEM (bottom_layer)->parasites);
while (reverse_list)
{
GimpLayerModeEffects mode;
layer = reverse_list->data;
/* determine what sort of operation is being attempted and
* if it's actually legal...
*/
operation = gimp_image_merge_layers_get_operation (merge_layer, layer);
if (operation == -1)
{
gimp_layer_add_alpha (layer);
/* try again ... */
operation = gimp_image_merge_layers_get_operation (merge_layer,
layer);
}
if (operation == -1)
{
g_warning ("%s: attempting to merge incompatible layers.", G_STRFUNC);
return NULL;
}
gimp_item_offsets (GIMP_ITEM (layer), &off_x, &off_y);
x3 = CLAMP (off_x, x1, x2);
y3 = CLAMP (off_y, y1, y2);
x4 = CLAMP (off_x + gimp_item_width (GIMP_ITEM (layer)), x1, x2);
y4 = CLAMP (off_y + gimp_item_height (GIMP_ITEM (layer)), y1, y2);
/* configure the pixel regions */
pixel_region_init (&src1PR,
gimp_drawable_get_tiles (GIMP_DRAWABLE (merge_layer)),
(x3 - x1), (y3 - y1), (x4 - x3), (y4 - y3),
TRUE);
pixel_region_init (&src2PR,
gimp_drawable_get_tiles (GIMP_DRAWABLE (layer)),
(x3 - off_x), (y3 - off_y),
(x4 - x3), (y4 - y3),
FALSE);
if (gimp_layer_get_mask (layer) &&
gimp_layer_mask_get_apply (layer->mask))
{
TileManager *tiles;
tiles = gimp_drawable_get_tiles (GIMP_DRAWABLE (layer->mask));
pixel_region_init (&maskPR, tiles,
(x3 - off_x), (y3 - off_y), (x4 - x3), (y4 - y3),
FALSE);
mask = &maskPR;
}
else
{
mask = NULL;
}
/* DISSOLVE_MODE is special since it is the only mode that does not
* work on the projection with the lower layer, but only locally on
* the layers alpha channel.
*/
mode = gimp_layer_get_mode (layer);
if (layer == bottom_layer && mode != GIMP_DISSOLVE_MODE)
mode = GIMP_NORMAL_MODE;
combine_regions (&src1PR, &src2PR, &src1PR, mask, NULL,
gimp_layer_get_opacity (layer) * 255.999,
mode,
active,
operation);
gimp_image_remove_layer (image, layer);
reverse_list = g_slist_next (reverse_list);
}
g_slist_free (reverse_list);
/* if the type is flatten, remove all the remaining layers */
if (merge_type == GIMP_FLATTEN_IMAGE)
{
list = GIMP_LIST (image->layers)->list;
while (list)
{
layer = list->data;
list = g_list_next (list);
gimp_image_remove_layer (image, layer);
}
gimp_image_add_layer (image, merge_layer, position);
}
else
{
/* Add the layer to the image */
gimp_image_add_layer (image, merge_layer,
gimp_container_num_children (image->layers) - position + 1);
}
/* set the name after the original layers have been removed so we
* don't end up with #2 appended to the name
*/
gimp_object_take_name (GIMP_OBJECT (merge_layer), name);
gimp_item_set_visible (GIMP_ITEM (merge_layer), TRUE, TRUE);
/* End the merge undo group */
gimp_image_undo_group_end (image);
gimp_drawable_update (GIMP_DRAWABLE (merge_layer),
0, 0,
gimp_item_width (GIMP_ITEM (merge_layer)),
gimp_item_height (GIMP_ITEM (merge_layer)));
return merge_layer;
}
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 can_lock_alpha = FALSE;
gboolean text_layer = FALSE;
gboolean writable = FALSE;
gboolean children = FALSE;
GList *next = NULL;
GList *next_visible = NULL;
GList *prev = NULL;
if (image)
{
fs = (gimp_image_get_floating_selection (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 *layer_list;
GList *list;
mask = gimp_layer_get_mask (layer);
lock_alpha = gimp_layer_get_lock_alpha (layer);
can_lock_alpha = gimp_layer_can_lock_alpha (layer);
alpha = gimp_drawable_has_alpha (GIMP_DRAWABLE (layer));
writable = ! gimp_item_is_content_locked (GIMP_ITEM (layer));
if (gimp_viewable_get_children (GIMP_VIEWABLE (layer)))
children = TRUE;
layer_list = gimp_item_get_container_iter (GIMP_ITEM (layer));
list = g_list_find (layer_list, layer);
if (list)
{
prev = g_list_previous (list);
next = g_list_next (list);
for (next_visible = next;
next_visible;
next_visible = g_list_next (next_visible))
{
if (gimp_item_get_visible (next_visible->data))
{
/* "next_visible" is actually "next_visible" and
* "writable" and "not group"
*/
if (gimp_item_is_content_locked (next_visible->data) ||
gimp_viewable_get_children (next_visible->data))
next_visible = NULL;
break;
}
}
}
text_layer = gimp_item_is_text_layer (GIMP_ITEM (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)
#define SET_LABEL(action,label) \
gimp_action_group_set_action_label (group, action, label)
SET_VISIBLE ("layers-text-tool", text_layer && !ac);
SET_SENSITIVE ("layers-edit-attributes", layer && !fs && !ac);
if (layer && gimp_layer_is_floating_sel (layer))
{
SET_LABEL ("layers-new", C_("layers-action", "To _New Layer"));
SET_LABEL ("layers-new-last-values", C_("layers-action", "To _New Layer"));
}
else
{
SET_LABEL ("layers-new", C_("layers-action", "_New Layer..."));
SET_LABEL ("layers-new-last-values", C_("layers-action", "_New Layer"));
}
SET_SENSITIVE ("layers-new", image);
SET_SENSITIVE ("layers-new-last-values", image);
SET_SENSITIVE ("layers-new-from-visible", image);
SET_SENSITIVE ("layers-new-group", image && !indexed);
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_visible);
SET_VISIBLE ("layers-merge-group", children);
SET_SENSITIVE ("layers-merge-group", layer && !fs && !ac && children);
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_SENSITIVE ("layers-resize", writable && !ac);
SET_SENSITIVE ("layers-resize-to-image", writable && !ac);
SET_SENSITIVE ("layers-scale", writable && !ac);
SET_SENSITIVE ("layers-crop", writable && sel);
SET_SENSITIVE ("layers-alpha-add", writable && !children && !fs && !alpha);
SET_SENSITIVE ("layers-alpha-remove", writable && !children && !fs && alpha);
SET_SENSITIVE ("layers-lock-alpha", can_lock_alpha);
SET_ACTIVE ("layers-lock-alpha", lock_alpha);
SET_SENSITIVE ("layers-mask-add", layer && !fs && !ac && !mask && !children);
SET_SENSITIVE ("layers-mask-apply", writable && !fs && !ac && mask && !children);
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
#undef SET_LABEL
}
