void
gimp_item_rotate (GimpItem *item,
GimpContext *context,
GimpRotationType rotate_type,
gdouble center_x,
gdouble center_y,
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->rotate_desc);
item_class->rotate (item, context, rotate_type, center_x, center_y,
clip_result);
gimp_image_undo_group_end (image);
}
void
gimp_item_transform (GimpItem *item,
GimpContext *context,
const GimpMatrix3 *matrix,
GimpTransformDirection direction,
GimpInterpolationType interpolation,
gint recursion_level,
GimpTransformResize clip_result,
GimpProgress *progress)
{
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));
g_return_if_fail (matrix != NULL);
g_return_if_fail (progress == NULL || GIMP_IS_PROGRESS (progress));
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->transform_desc);
item_class->transform (item, context, matrix, direction, interpolation,
recursion_level, clip_result, progress);
gimp_image_undo_group_end (image);
}
void
gimp_item_scale (GimpItem *item,
gint new_width,
gint new_height,
gint new_offset_x,
gint new_offset_y,
GimpInterpolationType interpolation,
GimpProgress *progress)
{
GimpItemClass *item_class;
GimpImage *image;
g_return_if_fail (GIMP_IS_ITEM (item));
g_return_if_fail (progress == NULL || GIMP_IS_PROGRESS (progress));
if (new_width < 1 || new_height < 1)
return;
item_class = GIMP_ITEM_GET_CLASS (item);
image = gimp_item_get_image (item);
if (gimp_item_is_attached (item))
gimp_image_undo_group_start (image, GIMP_UNDO_GROUP_ITEM_SCALE,
item_class->scale_desc);
item_class->scale (item, new_width, new_height, new_offset_x, new_offset_y,
interpolation, progress);
if (gimp_item_is_attached (item))
gimp_image_undo_group_end (image);
}
void
gimp_item_resize (GimpItem *item,
GimpContext *context,
gint new_width,
gint new_height,
gint offset_x,
gint offset_y)
{
GimpItemClass *item_class;
GimpImage *image;
g_return_if_fail (GIMP_IS_ITEM (item));
g_return_if_fail (GIMP_IS_CONTEXT (context));
if (new_width < 1 || new_height < 1)
return;
item_class = GIMP_ITEM_GET_CLASS (item);
image = gimp_item_get_image (item);
if (gimp_item_is_attached (item))
gimp_image_undo_group_start (image, GIMP_UNDO_GROUP_ITEM_RESIZE,
item_class->resize_desc);
item_class->resize (item, context, new_width, new_height, offset_x, offset_y);
if (gimp_item_is_attached (item))
gimp_image_undo_group_end (image);
}
/**
* gimp_item_is_attached:
* @item: The #GimpItem to check.
*
* Returns: %TRUE if the item is attached to an image, %FALSE otherwise.
*/
gboolean
gimp_item_is_attached (GimpItem *item)
{
g_return_val_if_fail (GIMP_IS_ITEM (item), FALSE);
return GIMP_ITEM_GET_CLASS (item)->is_attached (item);
}
/**
* gimp_item_translate:
* @item: The #GimpItem to move.
* @offset_x: Increment to the X offset of the item.
* @offset_y: Increment to the Y offset of the item.
* @push_undo: If #TRUE, create an entry in the image's undo stack
* for this action.
*
* Adds the specified increments to the X and Y offsets for the item.
*/
void
gimp_item_translate (GimpItem *item,
gint offset_x,
gint offset_y,
gboolean push_undo)
{
GimpItemClass *item_class;
GimpImage *image;
g_return_if_fail (GIMP_IS_ITEM (item));
item_class = GIMP_ITEM_GET_CLASS (item);
image = gimp_item_get_image (item);
if (! gimp_item_is_attached (item))
push_undo = FALSE;
if (push_undo)
gimp_image_undo_group_start (image, GIMP_UNDO_GROUP_ITEM_DISPLACE,
item_class->translate_desc);
item_class->translate (item, offset_x, offset_y, push_undo);
if (push_undo)
gimp_image_undo_group_end (image);
}
/**
* gimp_item_duplicate:
* @item: The #GimpItem to duplicate.
* @new_type: The type to make the new item.
*
* Returns: the newly created item.
*/
GimpItem *
gimp_item_duplicate (GimpItem *item,
GType new_type)
{
g_return_val_if_fail (GIMP_IS_ITEM (item), NULL);
g_return_val_if_fail (GIMP_IS_IMAGE (item->image), NULL);
g_return_val_if_fail (g_type_is_a (new_type, GIMP_TYPE_ITEM), NULL);
return GIMP_ITEM_GET_CLASS (item)->duplicate (item, new_type);
}
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);
}
/**
* gimp_item_convert:
* @item: The #GimpItem to convert.
* @dest_image: The #GimpImage in which to place the converted item.
* @new_type: The type to convert the item to.
*
* Returns: the new item that results from the conversion.
*/
GimpItem *
gimp_item_convert (GimpItem *item,
GimpImage *dest_image,
GType new_type)
{
GimpItem *new_item;
g_return_val_if_fail (GIMP_IS_ITEM (item), NULL);
g_return_val_if_fail (GIMP_IS_IMAGE (item->image), NULL);
g_return_val_if_fail (GIMP_IS_IMAGE (dest_image), NULL);
g_return_val_if_fail (g_type_is_a (new_type, GIMP_TYPE_ITEM), NULL);
new_item = gimp_item_duplicate (item, new_type);
if (new_item)
GIMP_ITEM_GET_CLASS (new_item)->convert (new_item, dest_image);
return new_item;
}
/**
* gimp_item_rename:
* @item: The #GimpItem to rename.
* @new_name: The new name to give the item.
* @error: Return location for error message.
*
* This function assigns a new name to the item, if the desired name is
* different from the name it already has, and pushes an entry onto the
* undo stack for the item's image. If @new_name is NULL or empty, the
* default name for the item's class is used. If the name is changed,
* the GimpObject::name-changed signal is emitted for the item.
*
* Returns: %TRUE if the @item could be renamed, %FALSE otherwise.
*/
gboolean
gimp_item_rename (GimpItem *item,
const gchar *new_name,
GError **error)
{
GimpItemClass *item_class;
g_return_val_if_fail (GIMP_IS_ITEM (item), FALSE);
g_return_val_if_fail (error == NULL || *error == NULL, FALSE);
item_class = GIMP_ITEM_GET_CLASS (item);
if (! new_name || ! *new_name)
new_name = item_class->default_name;
if (strcmp (new_name, gimp_object_get_name (GIMP_OBJECT (item))))
return item_class->rename (item, new_name, item_class->rename_desc, error);
return TRUE;
}
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;
}
