void
gimp_channel_select_by_color (GimpChannel *channel,
GimpDrawable *drawable,
gboolean sample_merged,
const GimpRGB *color,
gfloat threshold,
gboolean select_transparent,
GimpSelectCriterion select_criterion,
GimpChannelOps op,
gboolean antialias,
gboolean feather,
gdouble feather_radius_x,
gdouble feather_radius_y)
{
GimpPickable *pickable;
GeglBuffer *add_on;
gint add_on_x = 0;
gint add_on_y = 0;
g_return_if_fail (GIMP_IS_CHANNEL (channel));
g_return_if_fail (gimp_item_is_attached (GIMP_ITEM (channel)));
g_return_if_fail (GIMP_IS_DRAWABLE (drawable));
g_return_if_fail (color != NULL);
if (sample_merged)
pickable = GIMP_PICKABLE (gimp_item_get_image (GIMP_ITEM (drawable)));
else
pickable = GIMP_PICKABLE (drawable);
add_on = gimp_pickable_contiguous_region_by_color (pickable,
antialias,
threshold,
select_transparent,
select_criterion,
color);
if (! sample_merged)
gimp_item_get_offset (GIMP_ITEM (drawable), &add_on_x, &add_on_y);
gimp_channel_select_buffer (channel, C_("undo-type", "Select by Color"),
add_on, add_on_x, add_on_y,
op,
feather,
feather_radius_x,
feather_radius_y);
g_object_unref (add_on);
}
void
gimp_drawable_brightness_contrast (GimpDrawable *drawable,
GimpProgress *progress,
gint brightness,
gint contrast)
{
GimpBrightnessContrastConfig *config;
g_return_if_fail (GIMP_IS_DRAWABLE (drawable));
g_return_if_fail (! gimp_drawable_is_indexed (drawable));
g_return_if_fail (gimp_item_is_attached (GIMP_ITEM (drawable)));
config = g_object_new (GIMP_TYPE_BRIGHTNESS_CONTRAST_CONFIG,
"brightness", brightness / 127.0,
"contrast", contrast / 127.0,
NULL);
if (gimp_use_gegl (gimp_item_get_image (GIMP_ITEM (drawable))->gimp))
{
GeglNode *node;
node = g_object_new (GEGL_TYPE_NODE,
"operation", "gimp:brightness-contrast",
"config", config,
NULL);
gimp_drawable_apply_operation (drawable, progress,
C_("undo-type", "Brightness-Contrast")
, node, TRUE);
g_object_unref (node);
}
else
{
GimpLut *lut;
lut = brightness_contrast_lut_new (config->brightness / 2.0,
config->contrast,
gimp_drawable_bytes (drawable));
gimp_drawable_process_lut (drawable, progress,
C_("undo-type", "Brightness-Contrast"),
lut);
gimp_lut_free (lut);
}
g_object_unref (config);
}
gboolean
gimp_item_get_popup_size (GimpViewable *viewable,
gint width,
gint height,
gboolean dot_for_dot,
gint *popup_width,
gint *popup_height)
{
GimpItem *item = GIMP_ITEM (viewable);
GimpImage *image = gimp_item_get_image (item);
if (image && ! image->gimp->config->layer_previews)
return FALSE;
if (gimp_item_get_width (item) > width ||
gimp_item_get_height (item) > height)
{
gboolean scaling_up;
gdouble xres = 1.0;
gdouble yres = 1.0;
if (image)
gimp_image_get_resolution (image, &xres, &yres);
gimp_viewable_calc_preview_size (gimp_item_get_width (item),
gimp_item_get_height (item),
width * 2,
height * 2,
dot_for_dot,
xres,
yres,
popup_width,
popup_height,
&scaling_up);
if (scaling_up)
{
*popup_width = gimp_item_get_width (item);
*popup_height = gimp_item_get_height (item);
}
return TRUE;
}
return FALSE;
}
void
gimp_channel_select_scan_convert (GimpChannel *channel,
const gchar *undo_desc,
GimpScanConvert *scan_convert,
gint offset_x,
gint offset_y,
GimpChannelOps op,
gboolean antialias,
gboolean feather,
gdouble feather_radius_x,
gdouble feather_radius_y,
gboolean push_undo)
{
GimpItem *item;
GimpChannel *add_on;
g_return_if_fail (GIMP_IS_CHANNEL (channel));
g_return_if_fail (gimp_item_is_attached (GIMP_ITEM (channel)));
g_return_if_fail (undo_desc != NULL);
g_return_if_fail (scan_convert != NULL);
if (push_undo)
gimp_channel_push_undo (channel, undo_desc);
/* if applicable, replace the current selection */
if (op == GIMP_CHANNEL_OP_REPLACE)
gimp_channel_clear (channel, NULL, FALSE);
item = GIMP_ITEM (channel);
add_on = gimp_channel_new_mask (gimp_item_get_image (item),
gimp_item_width (item),
gimp_item_height (item));
gimp_scan_convert_render (scan_convert,
gimp_drawable_get_tiles (GIMP_DRAWABLE (add_on)),
offset_x, offset_y, antialias);
if (feather)
gimp_channel_feather (add_on,
feather_radius_x,
feather_radius_y,
FALSE /* no undo */);
gimp_channel_combine_mask (channel, add_on, op, 0, 0);
g_object_unref (add_on);
}
void
gimp_drawable_stroke_scan_convert (GimpDrawable *drawable,
GimpStrokeOptions *options,
GimpScanConvert *scan_convert,
gboolean push_undo)
{
gdouble width;
GimpUnit unit;
g_return_if_fail (GIMP_IS_DRAWABLE (drawable));
g_return_if_fail (gimp_item_is_attached (GIMP_ITEM (drawable)));
g_return_if_fail (GIMP_IS_STROKE_OPTIONS (options));
g_return_if_fail (scan_convert != NULL);
g_return_if_fail (gimp_fill_options_get_style (GIMP_FILL_OPTIONS (options)) !=
GIMP_FILL_STYLE_PATTERN ||
gimp_context_get_pattern (GIMP_CONTEXT (options)) != NULL);
if (! gimp_item_mask_intersect (GIMP_ITEM (drawable), NULL, NULL, NULL, NULL))
return;
width = gimp_stroke_options_get_width (options);
unit = gimp_stroke_options_get_unit (options);
if (unit != GIMP_UNIT_PIXEL)
{
GimpImage *image = gimp_item_get_image (GIMP_ITEM (drawable));
gdouble xres;
gdouble yres;
gimp_image_get_resolution (image, &xres, &yres);
gimp_scan_convert_set_pixel_ratio (scan_convert, yres / xres);
width = gimp_units_to_pixels (width, unit, yres);
}
gimp_scan_convert_stroke (scan_convert, width,
gimp_stroke_options_get_join_style (options),
gimp_stroke_options_get_cap_style (options),
gimp_stroke_options_get_miter_limit (options),
gimp_stroke_options_get_dash_offset (options),
gimp_stroke_options_get_dash_info (options));
gimp_drawable_fill_scan_convert (drawable, GIMP_FILL_OPTIONS (options),
scan_convert, push_undo);
}
void
gimp_channel_select_by_color (GimpChannel *channel,
GimpDrawable *drawable,
gboolean sample_merged,
const GimpRGB *color,
gint threshold,
gboolean select_transparent,
GimpSelectCriterion select_criterion,
GimpChannelOps op,
gboolean antialias,
gboolean feather,
gdouble feather_radius_x,
gdouble feather_radius_y)
{
GimpItem *item;
GimpChannel *add_on;
gint add_on_x = 0;
gint add_on_y = 0;
g_return_if_fail (GIMP_IS_CHANNEL (channel));
g_return_if_fail (gimp_item_is_attached (GIMP_ITEM (channel)));
g_return_if_fail (GIMP_IS_DRAWABLE (drawable));
g_return_if_fail (color != NULL);
item = GIMP_ITEM (channel);
add_on = gimp_image_contiguous_region_by_color (gimp_item_get_image (item),
drawable,
sample_merged,
antialias,
threshold,
select_transparent,
select_criterion,
color);
if (! sample_merged)
gimp_item_offsets (GIMP_ITEM (drawable), &add_on_x, &add_on_y);
gimp_channel_select_channel (channel, Q_("command|Select by Color"),
add_on, add_on_x, add_on_y,
op,
feather,
feather_radius_x,
feather_radius_y);
g_object_unref (add_on);
}
static GimpValueArray *
edit_cut_invoker (GimpProcedure *procedure,
Gimp *gimp,
GimpContext *context,
GimpProgress *progress,
const GimpValueArray *args,
GError **error)
{
gboolean success = TRUE;
GimpValueArray *return_vals;
GimpDrawable *drawable;
gboolean non_empty = FALSE;
drawable = gimp_value_get_drawable (gimp_value_array_index (args, 0), gimp);
if (success)
{
if (gimp_pdb_item_is_attached (GIMP_ITEM (drawable), NULL,
GIMP_PDB_ITEM_CONTENT, error) &&
gimp_pdb_item_is_not_group (GIMP_ITEM (drawable), error))
{
GimpImage *image = gimp_item_get_image (GIMP_ITEM (drawable));
GError *my_error = NULL;
non_empty = gimp_edit_cut (image, drawable, context, &my_error) != NULL;
if (! non_empty)
{
gimp_message_literal (gimp,
G_OBJECT (progress), GIMP_MESSAGE_WARNING,
my_error->message);
g_clear_error (&my_error);
}
}
else
success = FALSE;
}
return_vals = gimp_procedure_get_return_values (procedure, success,
error ? *error : NULL);
if (success)
g_value_set_boolean (gimp_value_array_index (return_vals, 1), non_empty);
return return_vals;
}
static void
gimp_image_map_tool_add_guide (GimpImageMapTool *im_tool)
{
GimpImageMapOptions *options = GIMP_IMAGE_MAP_TOOL_GET_OPTIONS (im_tool);
GimpItem *item;
GimpImage *image;
GimpOrientationType orientation;
gint position;
if (im_tool->percent_guide)
return;
item = GIMP_ITEM (im_tool->drawable);
image = gimp_item_get_image (item);
if (options->preview_alignment == GIMP_ALIGN_LEFT ||
options->preview_alignment == GIMP_ALIGN_RIGHT)
{
orientation = GIMP_ORIENTATION_VERTICAL;
position = (gimp_item_get_offset_x (item) +
gimp_item_get_width (item) *
options->preview_position);
}
else
{
orientation = GIMP_ORIENTATION_HORIZONTAL;
position = (gimp_item_get_offset_y (item) +
gimp_item_get_height (item) *
options->preview_position);
}
im_tool->percent_guide = gimp_guide_custom_new (orientation,
image->gimp->next_guide_ID++,
GIMP_GUIDE_STYLE_SPLIT_VIEW);
gimp_image_add_guide (image, im_tool->percent_guide, position);
g_signal_connect (im_tool->percent_guide, "removed",
G_CALLBACK (gimp_image_map_tool_guide_removed),
im_tool);
g_signal_connect (im_tool->percent_guide, "notify::position",
G_CALLBACK (gimp_image_map_tool_guide_moved),
im_tool);
}
static GimpValueArray *
selection_float_invoker (GimpProcedure *procedure,
Gimp *gimp,
GimpContext *context,
GimpProgress *progress,
const GimpValueArray *args,
GError **error)
{
gboolean success = TRUE;
GimpValueArray *return_vals;
GimpDrawable *drawable;
gint32 offx;
gint32 offy;
GimpLayer *layer = NULL;
drawable = gimp_value_get_drawable (gimp_value_array_index (args, 0), gimp);
offx = g_value_get_int (gimp_value_array_index (args, 1));
offy = g_value_get_int (gimp_value_array_index (args, 2));
if (success)
{
if (gimp_pdb_item_is_attached (GIMP_ITEM (drawable), NULL,
GIMP_PDB_ITEM_CONTENT, error) &&
gimp_pdb_item_is_not_group (GIMP_ITEM (drawable), error))
{
GimpImage *image = gimp_item_get_image (GIMP_ITEM (drawable));
layer = gimp_selection_float (GIMP_SELECTION (gimp_image_get_mask (image)),
drawable, context, TRUE, offx, offy,
error);
if (! layer)
success = FALSE;
}
else
success = FALSE;
}
return_vals = gimp_procedure_get_return_values (procedure, success,
error ? *error : NULL);
if (success)
gimp_value_set_layer (gimp_value_array_index (return_vals, 1), layer);
return return_vals;
}
/* -----------------------------------------------
* gap_image_get_parentpositions_as_int_stringlist
* -----------------------------------------------
* returns the list of parent stackpositions as list of integer numbers
* separated by the "/" delimiter.
* example 2/3/2
* return NULL in case the specified drawable is invalid or has no perent item
*/
char *
gap_image_get_parentpositions_as_int_stringlist(gint32 drawable_id)
{
char *parentpositions;
gint32 l_parent_id;
gint32 l_image_id;
parentpositions = NULL;
l_parent_id = gimp_item_get_parent(drawable_id);
if (l_parent_id > 0)
{
gint l_position;
l_image_id = gimp_item_get_image(drawable_id);
l_position = gimp_image_get_item_position (l_image_id, l_parent_id);
parentpositions = g_strdup_printf("%d", l_position);
while(l_parent_id > 0)
{
l_parent_id = gimp_item_get_parent(l_parent_id);
if (l_parent_id > 0)
{
char *new_parentpositions;
l_position = gimp_image_get_item_position (l_image_id, l_parent_id);
new_parentpositions = g_strdup_printf("%d/%s"
, (int)l_position
, parentpositions
);
g_free(parentpositions);
parentpositions = new_parentpositions;
}
}
}
if(gap_debug)
{
printf("parentpositions_as_int_stringlist: %s\n"
, parentpositions == NULL ? "null" : parentpositions
);
}
return (parentpositions);
} /* end gap_image_get_parentpositions_as_int_stringlist */
static void
gimp_vectors_to_selection (GimpItem *item,
GimpChannelOps op,
gboolean antialias,
gboolean feather,
gdouble feather_radius_x,
gdouble feather_radius_y)
{
GimpVectors *vectors = GIMP_VECTORS (item);
GimpImage *image = gimp_item_get_image (item);
gimp_channel_select_vectors (gimp_image_get_mask (image),
GIMP_ITEM_GET_CLASS (item)->to_selection_desc,
vectors,
op, antialias,
feather, feather_radius_x, feather_radius_x,
TRUE);
}
static GValueArray *
selection_float_invoker (GimpProcedure *procedure,
Gimp *gimp,
GimpContext *context,
GimpProgress *progress,
const GValueArray *args,
GError **error)
{
gboolean success = TRUE;
GValueArray *return_vals;
GimpDrawable *drawable;
gint32 offx;
gint32 offy;
GimpLayer *layer = NULL;
drawable = gimp_value_get_drawable (&args->values[0], gimp);
offx = g_value_get_int (&args->values[1]);
offy = g_value_get_int (&args->values[2]);
if (success)
{
if (gimp_pdb_item_is_attached (GIMP_ITEM (drawable), error))
{
GimpImage *image = gimp_item_get_image (GIMP_ITEM (drawable));
layer = gimp_selection_float (gimp_image_get_mask (image),
drawable, context, TRUE, offx, offy,
error);
if (! layer)
success = FALSE;
}
else
success = FALSE;
}
return_vals = gimp_procedure_get_return_values (procedure, success,
error ? *error : NULL);
if (success)
gimp_value_set_layer (&return_vals->values[1], layer);
return return_vals;
}
GdkPixbuf *
gimp_drawable_get_new_pixbuf (GimpViewable *viewable,
GimpContext *context,
gint width,
gint height)
{
GimpItem *item = GIMP_ITEM (viewable);
GimpImage *image = gimp_item_get_image (item);
if (! image->gimp->config->layer_previews)
return NULL;
return gimp_drawable_get_sub_pixbuf (GIMP_DRAWABLE (viewable),
0, 0,
gimp_item_get_width (item),
gimp_item_get_height (item),
width,
height);
}
void
gimp_drawable_posterize (GimpDrawable *drawable,
GimpProgress *progress,
gint levels)
{
GimpPosterizeConfig *config;
g_return_if_fail (GIMP_IS_DRAWABLE (drawable));
g_return_if_fail (! gimp_drawable_is_indexed (drawable));
g_return_if_fail (gimp_item_is_attached (GIMP_ITEM (drawable)));
config = g_object_new (GIMP_TYPE_POSTERIZE_CONFIG,
"levels", levels,
NULL);
if (gimp_use_gegl (gimp_item_get_image (GIMP_ITEM (drawable))->gimp))
{
GeglNode *node;
node = g_object_new (GEGL_TYPE_NODE,
"operation", "gimp:posterize",
NULL);
gegl_node_set (node,
"config", config,
NULL);
gimp_drawable_apply_operation (drawable, progress, _("Posterize"),
node, TRUE);
g_object_unref (node);
}
else
{
GimpLut *lut;
lut = posterize_lut_new (config->levels, gimp_drawable_bytes (drawable));
gimp_drawable_process_lut (drawable, progress, _("Posterize"), lut);
gimp_lut_free (lut);
}
g_object_unref (config);
}
void
floating_sel_rigor (GimpLayer *layer,
gboolean push_undo)
{
g_return_if_fail (GIMP_IS_LAYER (layer));
g_return_if_fail (gimp_layer_is_floating_sel (layer));
/* store the affected area from the drawable in the backing store */
floating_sel_store (layer,
GIMP_ITEM (layer)->offset_x,
GIMP_ITEM (layer)->offset_y,
GIMP_ITEM (layer)->width,
GIMP_ITEM (layer)->height);
layer->fs.initial = TRUE;
if (push_undo)
gimp_image_undo_push_fs_rigor (gimp_item_get_image (GIMP_ITEM (layer)),
NULL,
layer);
}
gboolean
gimp_item_stroke (GimpItem *item,
GimpDrawable *drawable,
GimpContext *context,
GimpStrokeDesc *stroke_desc,
gboolean use_default_values,
GimpProgress *progress,
GError **error)
{
GimpItemClass *item_class;
gboolean retval = FALSE;
g_return_val_if_fail (GIMP_IS_ITEM (item), FALSE);
g_return_val_if_fail (gimp_item_is_attached (item), FALSE);
g_return_val_if_fail (GIMP_IS_DRAWABLE (drawable), FALSE);
g_return_val_if_fail (gimp_item_is_attached (GIMP_ITEM (drawable)), FALSE);
g_return_val_if_fail (GIMP_IS_CONTEXT (context), FALSE);
g_return_val_if_fail (GIMP_IS_STROKE_DESC (stroke_desc), FALSE);
g_return_val_if_fail (progress == NULL || GIMP_IS_PROGRESS (progress), FALSE);
g_return_val_if_fail (error == NULL || *error == NULL, FALSE);
item_class = GIMP_ITEM_GET_CLASS (item);
if (item_class->stroke)
{
GimpImage *image = gimp_item_get_image (item);
gimp_stroke_desc_prepare (stroke_desc, context, use_default_values);
gimp_image_undo_group_start (image, GIMP_UNDO_GROUP_PAINT,
item_class->stroke_desc);
retval = item_class->stroke (item, drawable, stroke_desc, progress, error);
gimp_image_undo_group_end (image);
gimp_stroke_desc_finish (stroke_desc);
}
return retval;
}
void
floating_sel_relax (GimpLayer *layer,
gboolean push_undo)
{
g_return_if_fail (GIMP_IS_LAYER (layer));
g_return_if_fail (gimp_layer_is_floating_sel (layer));
/* restore the contents of drawable the floating layer is attached to */
if (layer->fs.initial == FALSE)
floating_sel_restore (layer,
GIMP_ITEM (layer)->offset_x,
GIMP_ITEM (layer)->offset_y,
GIMP_ITEM (layer)->width,
GIMP_ITEM (layer)->height);
layer->fs.initial = TRUE;
if (push_undo)
gimp_image_undo_push_fs_relax (gimp_item_get_image (GIMP_ITEM (layer)),
NULL,
layer);
}
TempBuf *
gimp_drawable_get_sub_preview (GimpDrawable *drawable,
gint src_x,
gint src_y,
gint src_width,
gint src_height,
gint dest_width,
gint dest_height)
{
GimpItem *item;
GimpImage *image;
g_return_val_if_fail (GIMP_IS_DRAWABLE (drawable), NULL);
g_return_val_if_fail (src_x >= 0, NULL);
g_return_val_if_fail (src_y >= 0, NULL);
g_return_val_if_fail (src_width > 0, NULL);
g_return_val_if_fail (src_height > 0, NULL);
g_return_val_if_fail (dest_width > 0, NULL);
g_return_val_if_fail (dest_height > 0, NULL);
item = GIMP_ITEM (drawable);
g_return_val_if_fail ((src_x + src_width) <= gimp_item_width (item), NULL);
g_return_val_if_fail ((src_y + src_height) <= gimp_item_height (item), NULL);
image = gimp_item_get_image (item);
if (! image->gimp->config->layer_previews)
return NULL;
if (GIMP_IMAGE_TYPE_BASE_TYPE (gimp_drawable_type (drawable)) == GIMP_INDEXED)
return gimp_drawable_indexed_preview (drawable,
gimp_image_get_colormap (image),
src_x, src_y, src_width, src_height,
dest_width, dest_height);
return tile_manager_get_sub_preview (gimp_drawable_get_tiles (drawable),
src_x, src_y, src_width, src_height,
dest_width, dest_height);
}
/**
* gimp_text_layer_from_layer:
* @layer: a #GimpLayer object
* @text: a #GimpText object
*
* Converts a standard #GimpLayer and a #GimpText object into a
* #GimpTextLayer. The new text layer takes ownership of the @text and
* @layer objects. The @layer object is rendered unusable by this
* function. Don't even try to use if afterwards!
*
* This is a gross hack that is needed in order to load text layers
* from XCF files in a backwards-compatible way. Please don't use it
* for anything else!
*
* Return value: a newly allocated #GimpTextLayer object
**/
static GimpLayer *
gimp_text_layer_from_layer (GimpLayer *layer,
GimpText *text)
{
GimpTextLayer *text_layer;
GimpDrawable *drawable;
g_return_val_if_fail (GIMP_IS_LAYER (layer), NULL);
g_return_val_if_fail (GIMP_IS_TEXT (text), NULL);
text_layer = g_object_new (GIMP_TYPE_TEXT_LAYER,
"image", gimp_item_get_image (GIMP_ITEM (layer)),
NULL);
gimp_item_replace_item (GIMP_ITEM (text_layer), GIMP_ITEM (layer));
drawable = GIMP_DRAWABLE (text_layer);
gimp_drawable_steal_buffer (drawable, GIMP_DRAWABLE (layer));
gimp_layer_set_opacity (GIMP_LAYER (text_layer),
gimp_layer_get_opacity (layer), FALSE);
gimp_layer_set_mode (GIMP_LAYER (text_layer),
gimp_layer_get_mode (layer), FALSE);
gimp_layer_set_blend_space (GIMP_LAYER (text_layer),
gimp_layer_get_blend_space (layer), FALSE);
gimp_layer_set_composite_space (GIMP_LAYER (text_layer),
gimp_layer_get_composite_space (layer), FALSE);
gimp_layer_set_composite_mode (GIMP_LAYER (text_layer),
gimp_layer_get_composite_mode (layer), FALSE);
gimp_layer_set_lock_alpha (GIMP_LAYER (text_layer),
gimp_layer_get_lock_alpha (layer), FALSE);
gimp_text_layer_set_text (text_layer, text);
g_object_unref (text);
g_object_unref (layer);
return GIMP_LAYER (text_layer);
}
static void
gimp_image_map_tool_move_guide (GimpImageMapTool *im_tool)
{
GimpImageMapOptions *options = GIMP_IMAGE_MAP_TOOL_GET_OPTIONS (im_tool);
GimpItem *item;
GimpOrientationType orientation;
gint position;
if (! im_tool->percent_guide)
return;
item = GIMP_ITEM (im_tool->drawable);
if (options->preview_alignment == GIMP_ALIGN_LEFT ||
options->preview_alignment == GIMP_ALIGN_RIGHT)
{
orientation = GIMP_ORIENTATION_VERTICAL;
position = (gimp_item_get_offset_x (item) +
gimp_item_get_width (item) *
options->preview_position);
}
else
{
orientation = GIMP_ORIENTATION_HORIZONTAL;
position = (gimp_item_get_offset_y (item) +
gimp_item_get_height (item) *
options->preview_position);
}
if (orientation != gimp_guide_get_orientation (im_tool->percent_guide) ||
position != gimp_guide_get_position (im_tool->percent_guide))
{
gimp_guide_set_orientation (im_tool->percent_guide, orientation);
gimp_image_move_guide (gimp_item_get_image (item),
im_tool->percent_guide, position, FALSE);
}
}
void
gimp_channel_select_component (GimpChannel *channel,
GimpChannelType component,
GimpChannelOps op,
gboolean feather,
gdouble feather_radius_x,
gdouble feather_radius_y)
{
GimpItem *item;
GimpChannel *add_on;
const gchar *desc;
gchar *undo_desc;
g_return_if_fail (GIMP_IS_CHANNEL (channel));
g_return_if_fail (gimp_item_is_attached (GIMP_ITEM (channel)));
item = GIMP_ITEM (channel);
add_on = gimp_channel_new_from_component (gimp_item_get_image (item),
component, NULL, NULL);
if (feather)
gimp_channel_feather (add_on,
feather_radius_x,
feather_radius_y,
FALSE /* no undo */);
gimp_enum_get_value (GIMP_TYPE_CHANNEL_TYPE, component,
NULL, NULL, &desc, NULL);
undo_desc = g_strdup_printf (C_("undo-type", "%s Channel to Selection"), desc);
gimp_channel_select_channel (channel, undo_desc, add_on,
0, 0, op,
FALSE, 0.0, 0.0);
g_free (undo_desc);
g_object_unref (add_on);
}
void
gimp_item_set_linked (GimpItem *item,
gboolean linked,
gboolean push_undo)
{
g_return_if_fail (GIMP_IS_ITEM (item));
if (gimp_item_get_linked (item) != linked)
{
if (push_undo && gimp_item_is_attached (item))
{
GimpImage *image = gimp_item_get_image (item);
if (image)
gimp_image_undo_push_item_linked (image, NULL, item);
}
item->linked = linked ? TRUE : FALSE;
g_signal_emit (item, gimp_item_signals[LINKED_CHANGED], 0);
}
}
void
gimp_item_set_visible (GimpItem *item,
gboolean visible,
gboolean push_undo)
{
g_return_if_fail (GIMP_IS_ITEM (item));
if (gimp_item_get_visible (item) != visible)
{
if (push_undo && gimp_item_is_attached (item))
{
GimpImage *image = gimp_item_get_image (item);
if (image)
gimp_image_undo_push_item_visibility (image, NULL, item);
}
item->visible = visible ? TRUE : FALSE;
g_signal_emit (item, gimp_item_signals[VISIBILITY_CHANGED], 0);
}
}
static void
gimp_drawable_curves (GimpDrawable *drawable,
GimpProgress *progress,
GimpCurvesConfig *config)
{
if (gimp_use_gegl (gimp_item_get_image (GIMP_ITEM (drawable))->gimp))
{
GeglNode *node;
node = g_object_new (GEGL_TYPE_NODE,
"operation", "gimp:curves",
NULL);
gegl_node_set (node,
"config", config,
NULL);
gimp_drawable_apply_operation (drawable, progress, C_("undo-type", "Curves"),
node, TRUE);
g_object_unref (node);
}
else
{
GimpLut *lut = gimp_lut_new ();
Curves cruft;
gimp_curves_config_to_cruft (config, &cruft,
gimp_drawable_is_rgb (drawable));
gimp_lut_setup (lut,
(GimpLutFunc) curves_lut_func,
&cruft,
gimp_drawable_bytes (drawable));
gimp_drawable_process_lut (drawable, progress, C_("undo-type", "Curves"), lut);
gimp_lut_free (lut);
}
}
gboolean
gimp_item_linked_is_locked (const GimpItem *item)
{
GList *list;
GList *l;
gboolean locked = FALSE;
g_return_val_if_fail (GIMP_IS_ITEM (item), FALSE);
g_return_val_if_fail (gimp_item_get_linked (item) == TRUE, FALSE);
g_return_val_if_fail (gimp_item_is_attached (item), FALSE);
list = gimp_image_item_list_get_list (gimp_item_get_image (item), item,
GIMP_ITEM_TYPE_ALL,
GIMP_ITEM_SET_LINKED);
list = gimp_image_item_list_filter (item, list, TRUE, FALSE);
for (l = list; l && ! locked; l = g_list_next (l))
{
GimpItem *item = l->data;
/* temporarily set the item to not being linked, or we will
* run into a recursion because gimp_item_is_position_locked()
* call this function if the item is linked
*/
gimp_item_set_linked (item, FALSE, FALSE);
if (gimp_item_is_position_locked (item))
locked = TRUE;
gimp_item_set_linked (item, TRUE, FALSE);
}
g_list_free (list);
return locked;
}
void
gimp_item_flip (GimpItem *item,
GimpContext *context,
GimpOrientationType flip_type,
gdouble axis,
gboolean clip_result)
{
GimpItemClass *item_class;
GimpImage *image;
g_return_if_fail (GIMP_IS_ITEM (item));
g_return_if_fail (gimp_item_is_attached (item));
g_return_if_fail (GIMP_IS_CONTEXT (context));
item_class = GIMP_ITEM_GET_CLASS (item);
image = gimp_item_get_image (item);
gimp_image_undo_group_start (image, GIMP_UNDO_GROUP_TRANSFORM,
item_class->flip_desc);
item_class->flip (item, context, flip_type, axis, clip_result);
gimp_image_undo_group_end (image);
}
/**
* gimp_item_check_scaling:
* @item: Item to check
* @new_width: proposed width of item, in pixels
* @new_height: proposed height of item, in pixels
*
* Scales item dimensions, then snaps them to pixel centers
*
* Returns: #FALSE if any dimension reduces to zero as a result
* of this; otherwise, returns #TRUE.
**/
gboolean
gimp_item_check_scaling (const GimpItem *item,
gint new_width,
gint new_height)
{
GimpImage *image;
gdouble img_scale_w;
gdouble img_scale_h;
gint new_item_width;
gint new_item_height;
g_return_val_if_fail (GIMP_IS_ITEM (item), FALSE);
image = gimp_item_get_image (item);
img_scale_w = ((gdouble) new_width /
(gdouble) gimp_image_get_width (image));
img_scale_h = ((gdouble) new_height /
(gdouble) gimp_image_get_height (image));
new_item_width = ROUND (img_scale_w * (gdouble) gimp_item_width (item));
new_item_height = ROUND (img_scale_h * (gdouble) gimp_item_height (item));
return (new_item_width > 0 && new_item_height > 0);
}
TempBuf *
gimp_drawable_get_preview (GimpViewable *viewable,
GimpContext *context,
gint width,
gint height)
{
GimpDrawable *drawable;
GimpImage *image;
drawable = GIMP_DRAWABLE (viewable);
image = gimp_item_get_image (GIMP_ITEM (drawable));
if (! image->gimp->config->layer_previews)
return NULL;
/* Ok prime the cache with a large preview if the cache is invalid */
if (! drawable->preview_valid &&
width <= PREVIEW_CACHE_PRIME_WIDTH &&
height <= PREVIEW_CACHE_PRIME_HEIGHT &&
image &&
image->width > PREVIEW_CACHE_PRIME_WIDTH &&
image->height > PREVIEW_CACHE_PRIME_HEIGHT)
{
TempBuf *tb = gimp_drawable_preview_private (drawable,
PREVIEW_CACHE_PRIME_WIDTH,
PREVIEW_CACHE_PRIME_HEIGHT);
/* Save the 2nd call */
if (width == PREVIEW_CACHE_PRIME_WIDTH &&
height == PREVIEW_CACHE_PRIME_HEIGHT)
return tb;
}
/* Second call - should NOT visit the tile cache...*/
return gimp_drawable_preview_private (drawable, width, height);
}
static void
gimp_viewable_dialog_name_changed (GimpObject *object,
GimpViewableDialog *dialog)
{
gchar *name;
name = gimp_viewable_get_description (GIMP_VIEWABLE (object), NULL);
if (GIMP_IS_ITEM (object))
{
GimpImage *image = gimp_item_get_image (GIMP_ITEM (object));
gchar *tmp;
tmp = name;
name = g_strdup_printf ("%s-%d (%s)",
tmp,
gimp_item_get_ID (GIMP_ITEM (object)),
gimp_image_get_display_name (image));
g_free (tmp);
}
gtk_label_set_text (GTK_LABEL (dialog->viewable_label), name);
g_free (name);
}
static void
gimp_vectors_scale (GimpItem *item,
gint new_width,
gint new_height,
gint new_offset_x,
gint new_offset_y,
GimpInterpolationType interpolation_type,
GimpProgress *progress)
{
GimpVectors *vectors = GIMP_VECTORS (item);
GimpImage *image = gimp_item_get_image (item);
GList *list;
gimp_vectors_freeze (vectors);
if (gimp_item_is_attached (item))
gimp_image_undo_push_vectors_mod (image, NULL, vectors);
for (list = vectors->strokes; list; list = g_list_next (list))
{
GimpStroke *stroke = list->data;
gimp_stroke_scale (stroke,
(gdouble) new_width / (gdouble) gimp_item_get_width (item),
(gdouble) new_height / (gdouble) gimp_item_get_height (item));
gimp_stroke_translate (stroke, new_offset_x, new_offset_y);
}
GIMP_ITEM_CLASS (parent_class)->scale (item,
gimp_image_get_width (image),
gimp_image_get_height (image),
0, 0,
interpolation_type, progress);
gimp_vectors_thaw (vectors);
}
