void
gimp_vectors_add_strokes (const GimpVectors *src_vectors,
GimpVectors *dest_vectors)
{
GList *current_lstroke;
GList *strokes_copy;
g_return_if_fail (GIMP_IS_VECTORS (src_vectors));
g_return_if_fail (GIMP_IS_VECTORS (dest_vectors));
gimp_vectors_freeze (dest_vectors);
strokes_copy = g_list_copy (src_vectors->strokes);
current_lstroke = strokes_copy;
while (current_lstroke)
{
current_lstroke->data = gimp_stroke_duplicate (current_lstroke->data);
dest_vectors->last_stroke_ID ++;
gimp_stroke_set_ID (current_lstroke->data,
dest_vectors->last_stroke_ID);
current_lstroke = g_list_next (current_lstroke);
}
dest_vectors->strokes = g_list_concat (dest_vectors->strokes, strokes_copy);
gimp_vectors_thaw (dest_vectors);
}
GimpUndo *
gimp_image_undo_push_vectors_remove (GimpImage *image,
const gchar *undo_desc,
GimpVectors *vectors,
GimpVectors *prev_parent,
gint prev_position,
GimpVectors *prev_vectors)
{
g_return_val_if_fail (GIMP_IS_IMAGE (image), NULL);
g_return_val_if_fail (GIMP_IS_VECTORS (vectors), NULL);
g_return_val_if_fail (gimp_item_is_attached (GIMP_ITEM (vectors)), NULL);
g_return_val_if_fail (prev_parent == NULL || GIMP_IS_VECTORS (prev_parent),
NULL);
g_return_val_if_fail (prev_vectors == NULL || GIMP_IS_VECTORS (prev_vectors),
NULL);
return gimp_image_undo_push (image, GIMP_TYPE_VECTORS_UNDO,
GIMP_UNDO_VECTORS_REMOVE, undo_desc,
GIMP_DIRTY_IMAGE_STRUCTURE,
"item", vectors,
"prev-parent", prev_parent,
"prev-position", prev_position,
"prev-vectors", prev_vectors,
NULL);
}
gint
gimp_vectors_get_n_strokes (const GimpVectors *vectors)
{
g_return_val_if_fail (GIMP_IS_VECTORS (vectors), 0);
return g_list_length (vectors->strokes);
}
void
gimp_channel_select_vectors (GimpChannel *channel,
const gchar *undo_desc,
GimpVectors *vectors,
GimpChannelOps op,
gboolean antialias,
gboolean feather,
gdouble feather_radius_x,
gdouble feather_radius_y,
gboolean push_undo)
{
const GimpBezierDesc *bezier;
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 (GIMP_IS_VECTORS (vectors));
bezier = gimp_vectors_get_bezier (vectors);
if (bezier && bezier->num_data > 4)
{
GimpScanConvert *scan_convert;
scan_convert = gimp_scan_convert_new ();
gimp_scan_convert_add_bezier (scan_convert, bezier);
gimp_channel_select_scan_convert (channel, undo_desc, scan_convert, 0, 0,
op, antialias, feather,
feather_radius_x, feather_radius_y,
push_undo);
gimp_scan_convert_free (scan_convert);
}
}
GimpVectors *
gimp_vectors_get_parent (GimpVectors *vectors)
{
g_return_val_if_fail (GIMP_IS_VECTORS (vectors), NULL);
return GIMP_VECTORS (gimp_viewable_get_parent (GIMP_VIEWABLE (vectors)));
}
GimpStroke *
gimp_pdb_get_vectors_stroke (GimpVectors *vectors,
gint stroke_ID,
GimpPDBItemModify modify,
GError **error)
{
GimpStroke *stroke = NULL;
g_return_val_if_fail (GIMP_IS_VECTORS (vectors), NULL);
g_return_val_if_fail (error == NULL || *error == NULL, NULL);
if (! gimp_pdb_item_is_not_group (GIMP_ITEM (vectors), error))
return NULL;
if (! modify || gimp_pdb_item_is_modifyable (GIMP_ITEM (vectors),
modify, error))
{
stroke = gimp_vectors_stroke_get_by_ID (vectors, stroke_ID);
if (! stroke)
g_set_error (error, GIMP_PDB_ERROR, GIMP_PDB_ERROR_INVALID_ARGUMENT,
_("Vectors object %d does not contain stroke with ID %d"),
gimp_item_get_ID (GIMP_ITEM (vectors)), stroke_ID);
}
return stroke;
}
GimpStroke *
gimp_vectors_stroke_get (const GimpVectors *vectors,
const GimpCoords *coord)
{
g_return_val_if_fail (GIMP_IS_VECTORS (vectors), NULL);
return GIMP_VECTORS_GET_CLASS (vectors)->stroke_get (vectors, coord);
}
gdouble
gimp_vectors_get_distance (const GimpVectors *vectors,
const GimpCoords *coord)
{
g_return_val_if_fail (GIMP_IS_VECTORS (vectors), 0.0);
return GIMP_VECTORS_GET_CLASS (vectors)->get_distance (vectors, coord);
}
GimpStroke *
gimp_vectors_stroke_get_next (const GimpVectors *vectors,
const GimpStroke *prev)
{
g_return_val_if_fail (GIMP_IS_VECTORS (vectors), NULL);
return GIMP_VECTORS_GET_CLASS (vectors)->stroke_get_next (vectors, prev);
}
gdouble
gimp_vectors_get_length (const GimpVectors *vectors,
const GimpAnchor *start)
{
g_return_val_if_fail (GIMP_IS_VECTORS (vectors), 0.0);
return GIMP_VECTORS_GET_CLASS (vectors)->get_length (vectors, start);
}
void
gimp_drawable_stroke_vectors (GimpDrawable *drawable,
GimpStrokeOptions *options,
GimpVectors *vectors)
{
GimpScanConvert *scan_convert;
GimpStroke *stroke;
gint num_coords = 0;
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 (GIMP_IS_VECTORS (vectors));
scan_convert = gimp_scan_convert_new ();
/* For each Stroke in the vector, interpolate it, and add it to the
* ScanConvert
*/
for (stroke = gimp_vectors_stroke_get_next (vectors, NULL);
stroke;
stroke = gimp_vectors_stroke_get_next (vectors, stroke))
{
GArray *coords;
gboolean closed;
/* Get the interpolated version of this stroke, and add it to our
* scanconvert.
*/
coords = gimp_stroke_interpolate (stroke, 0.2, &closed);
if (coords && coords->len)
{
GimpVector2 *points = g_new0 (GimpVector2, coords->len);
gint i;
for (i = 0; i < coords->len; i++)
{
points[i].x = g_array_index (coords, GimpCoords, i).x;
points[i].y = g_array_index (coords, GimpCoords, i).y;
num_coords++;
}
gimp_scan_convert_add_polyline (scan_convert, coords->len,
points, closed);
g_free (points);
}
if (coords)
g_array_free (coords, TRUE);
}
if (num_coords > 0)
gimp_drawable_stroke_scan_convert (drawable, options, scan_convert);
gimp_scan_convert_free (scan_convert);
}
/**
* gimp_vectors_export_string:
* @image: the #GimpImage from which to export vectors
* @vectors: a #GimpVectors object or %NULL to export all vectors in @image
*
* Exports one or more vectors to a SVG string.
*
* Return value: a %NUL-terminated string that holds a complete XML document
**/
gchar *
gimp_vectors_export_string (const GimpImage *image,
const GimpVectors *vectors)
{
g_return_val_if_fail (GIMP_IS_IMAGE (image), NULL);
g_return_val_if_fail (vectors == NULL || GIMP_IS_VECTORS (vectors), NULL);
return g_string_free (gimp_vectors_export (image, vectors), FALSE);
}
gdouble
gimp_vectors_stroke_get_length (const GimpVectors *vectors,
const GimpStroke *stroke)
{
g_return_val_if_fail (GIMP_IS_VECTORS (vectors), 0.0);
g_return_val_if_fail (GIMP_IS_STROKE (stroke), 0.0);
return GIMP_VECTORS_GET_CLASS (vectors)->stroke_get_length (vectors, stroke);
}
static gdouble
gimp_vectors_real_stroke_get_length (const GimpVectors *vectors,
const GimpStroke *stroke)
{
g_return_val_if_fail (GIMP_IS_VECTORS (vectors), 0.0);
g_return_val_if_fail (GIMP_IS_STROKE (stroke), 0.0);
return gimp_stroke_get_length (stroke, vectors->precision);
}
void
gimp_vectors_anchor_delete (GimpVectors *vectors,
GimpAnchor *anchor)
{
g_return_if_fail (GIMP_IS_VECTORS (vectors));
g_return_if_fail (anchor != NULL);
GIMP_VECTORS_GET_CLASS (vectors)->anchor_delete (vectors, anchor);
}
GimpAnchor *
gimp_vectors_anchor_get (const GimpVectors *vectors,
const GimpCoords *coord,
GimpStroke **ret_stroke)
{
g_return_val_if_fail (GIMP_IS_VECTORS (vectors), NULL);
return GIMP_VECTORS_GET_CLASS (vectors)->anchor_get (vectors, coord,
ret_stroke);
}
void
gimp_vectors_freeze (GimpVectors *vectors)
{
g_return_if_fail (GIMP_IS_VECTORS (vectors));
vectors->freeze_count++;
if (vectors->freeze_count == 1)
g_signal_emit (vectors, gimp_vectors_signals[FREEZE], 0);
}
GimpUndo *
gimp_image_undo_push_vectors_add (GimpImage *image,
const gchar *undo_desc,
GimpVectors *vectors,
GimpVectors *prev_vectors)
{
g_return_val_if_fail (GIMP_IS_IMAGE (image), NULL);
g_return_val_if_fail (GIMP_IS_VECTORS (vectors), NULL);
g_return_val_if_fail (! gimp_item_is_attached (GIMP_ITEM (vectors)), NULL);
g_return_val_if_fail (prev_vectors == NULL || GIMP_IS_VECTORS (prev_vectors),
NULL);
return gimp_image_undo_push (image, GIMP_TYPE_VECTORS_UNDO,
GIMP_UNDO_VECTORS_ADD, undo_desc,
GIMP_DIRTY_IMAGE_STRUCTURE,
"item", vectors,
"prev-vectors", prev_vectors,
NULL);
}
void
gimp_vectors_thaw (GimpVectors *vectors)
{
g_return_if_fail (GIMP_IS_VECTORS (vectors));
g_return_if_fail (vectors->freeze_count > 0);
vectors->freeze_count--;
if (vectors->freeze_count == 0)
g_signal_emit (vectors, gimp_vectors_signals[THAW], 0);
}
const GimpBezierDesc *
gimp_vectors_get_bezier (GimpVectors *vectors)
{
g_return_val_if_fail (GIMP_IS_VECTORS (vectors), NULL);
if (! vectors->bezier_desc)
{
vectors->bezier_desc = gimp_vectors_make_bezier (vectors);
}
return vectors->bezier_desc;
}
void
gimp_vectors_copy_strokes (const GimpVectors *src_vectors,
GimpVectors *dest_vectors)
{
g_return_if_fail (GIMP_IS_VECTORS (src_vectors));
g_return_if_fail (GIMP_IS_VECTORS (dest_vectors));
gimp_vectors_freeze (dest_vectors);
if (dest_vectors->strokes)
{
g_list_free_full (dest_vectors->strokes, (GDestroyNotify) g_object_unref);
}
dest_vectors->strokes = NULL;
dest_vectors->last_stroke_ID = 0;
gimp_vectors_add_strokes (src_vectors, dest_vectors);
gimp_vectors_thaw (dest_vectors);
}
void
gimp_vectors_stroke_remove (GimpVectors *vectors,
GimpStroke *stroke)
{
g_return_if_fail (GIMP_IS_VECTORS (vectors));
g_return_if_fail (GIMP_IS_STROKE (stroke));
gimp_vectors_freeze (vectors);
GIMP_VECTORS_GET_CLASS (vectors)->stroke_remove (vectors, stroke);
gimp_vectors_thaw (vectors);
}
gint
gimp_vectors_interpolate (const GimpVectors *vectors,
const GimpStroke *stroke,
gdouble precision,
gint max_points,
GimpCoords *ret_coords)
{
g_return_val_if_fail (GIMP_IS_VECTORS (vectors), 0);
return GIMP_VECTORS_GET_CLASS (vectors)->interpolate (vectors, stroke,
precision, max_points,
ret_coords);
}
GimpUndo *
gimp_image_undo_push_vectors_mod (GimpImage *image,
const gchar *undo_desc,
GimpVectors *vectors)
{
g_return_val_if_fail (GIMP_IS_IMAGE (image), NULL);
g_return_val_if_fail (GIMP_IS_VECTORS (vectors), NULL);
g_return_val_if_fail (gimp_item_is_attached (GIMP_ITEM (vectors)), NULL);
return gimp_image_undo_push (image, GIMP_TYPE_VECTORS_MOD_UNDO,
GIMP_UNDO_VECTORS_MOD, undo_desc,
GIMP_DIRTY_ITEM | GIMP_DIRTY_VECTORS,
"item", vectors,
NULL);
}
GimpStroke *
gimp_vectors_stroke_get_by_ID (const GimpVectors *vectors,
gint id)
{
GList *list;
g_return_val_if_fail (GIMP_IS_VECTORS (vectors), NULL);
for (list = vectors->strokes; list; list = g_list_next (list))
{
if (gimp_stroke_get_ID (list->data) == id)
return list->data;
}
return NULL;
}
static void
gimp_vectors_prop_undo_constructed (GObject *object)
{
/* GimpVectors *vectors; */
G_OBJECT_CLASS (parent_class)->constructed (object);
gimp_assert (GIMP_IS_VECTORS (GIMP_ITEM_UNDO (object)->item));
/* vectors = GIMP_VECTORS (GIMP_ITEM_UNDO (object)->item); */
switch (GIMP_UNDO (object)->undo_type)
{
default:
gimp_assert_not_reached ();
}
}
static GimpItem *
gimp_vectors_duplicate (GimpItem *item,
GType new_type)
{
GimpItem *new_item;
g_return_val_if_fail (g_type_is_a (new_type, GIMP_TYPE_VECTORS), NULL);
new_item = GIMP_ITEM_CLASS (parent_class)->duplicate (item, new_type);
if (GIMP_IS_VECTORS (new_item))
{
GimpVectors *vectors = GIMP_VECTORS (item);
GimpVectors *new_vectors = GIMP_VECTORS (new_item);
gimp_vectors_copy_strokes (vectors, new_vectors);
}
return new_item;
}
gboolean
gimp_drawable_stroke_vectors (GimpDrawable *drawable,
GimpStrokeOptions *options,
GimpVectors *vectors,
gboolean push_undo,
GError **error)
{
const GimpBezierDesc *bezier;
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_STROKE_OPTIONS (options), FALSE);
g_return_val_if_fail (GIMP_IS_VECTORS (vectors), FALSE);
g_return_val_if_fail (gimp_fill_options_get_style (GIMP_FILL_OPTIONS (options)) !=
GIMP_FILL_STYLE_PATTERN ||
gimp_context_get_pattern (GIMP_CONTEXT (options)) != NULL,
FALSE);
g_return_val_if_fail (error == NULL || *error == NULL, FALSE);
bezier = gimp_vectors_get_bezier (vectors);
if (bezier && bezier->num_data >= 2)
{
GimpScanConvert *scan_convert = gimp_scan_convert_new ();
gimp_scan_convert_add_bezier (scan_convert, bezier);
gimp_drawable_stroke_scan_convert (drawable, options,
scan_convert, push_undo);
gimp_scan_convert_free (scan_convert);
return TRUE;
}
g_set_error_literal (error, GIMP_ERROR, GIMP_FAILED,
_("Not enough points to stroke"));
return FALSE;
}
/**
* gimp_vectors_export_file:
* @image: the #GimpImage from which to export vectors
* @vectors: a #GimpVectors object or %NULL to export all vectors in @image
* @filename: the name of the file to write
* @error: return location for errors
*
* Exports one or more vectors to a SVG file.
*
* Return value: %TRUE on success,
* %FALSE if there was an error writing the file
**/
gboolean
gimp_vectors_export_file (const GimpImage *image,
const GimpVectors *vectors,
const gchar *filename,
GError **error)
{
FILE *file;
GString *str;
g_return_val_if_fail (GIMP_IS_IMAGE (image), FALSE);
g_return_val_if_fail (vectors == NULL || GIMP_IS_VECTORS (vectors), FALSE);
g_return_val_if_fail (filename != NULL, FALSE);
g_return_val_if_fail (error == NULL || *error == NULL, FALSE);
file = g_fopen (filename, "w");
if (!file)
{
g_set_error (error, G_FILE_ERROR, g_file_error_from_errno (errno),
_("Could not open '%s' for writing: %s"),
gimp_filename_to_utf8 (filename), g_strerror (errno));
return FALSE;
}
str = gimp_vectors_export (image, vectors);
fprintf (file, "%s", str->str);
g_string_free (str, TRUE);
if (fclose (file))
{
g_set_error (error, G_FILE_ERROR, g_file_error_from_errno (errno),
_("Error while writing '%s': %s"),
gimp_filename_to_utf8 (filename), g_strerror (errno));
return FALSE;
}
return TRUE;
}
static GObject *
gimp_vectors_mod_undo_constructor (GType type,
guint n_params,
GObjectConstructParam *params)
{
GObject *object;
GimpVectorsModUndo *vectors_mod_undo;
GimpVectors *vectors;
object = G_OBJECT_CLASS (parent_class)->constructor (type, n_params, params);
vectors_mod_undo = GIMP_VECTORS_MOD_UNDO (object);
g_assert (GIMP_IS_VECTORS (GIMP_ITEM_UNDO (object)->item));
vectors = GIMP_VECTORS (GIMP_ITEM_UNDO (object)->item);
vectors_mod_undo->vectors =
GIMP_VECTORS (gimp_item_duplicate (GIMP_ITEM (vectors),
G_TYPE_FROM_INSTANCE (vectors),
FALSE));
return object;
}
