gboolean
gimp_item_is_text_layer (GimpItem *item)
{
return (GIMP_IS_TEXT_LAYER (item) &&
GIMP_TEXT_LAYER (item)->text &&
GIMP_TEXT_LAYER (item)->modified == FALSE);
}
void
gimp_text_layer_xcf_save_prepare (GimpTextLayer *layer)
{
GimpText *text;
g_return_if_fail (GIMP_IS_TEXT_LAYER (layer));
/* If the layer has a text parasite already, it wasn't changed and we
* can simply save the original parasite back which is still attached.
*/
if (layer->text_parasite)
return;
text = gimp_text_layer_get_text (layer);
if (text)
{
GimpParasite *parasite = gimp_text_to_parasite (text);
/* Don't push an undo because the parasite only exists temporarily
* while the text layer is saved to XCF.
*/
gimp_item_parasite_attach (GIMP_ITEM (layer), parasite, FALSE);
gimp_parasite_free (parasite);
}
}
GimpText *
gimp_text_layer_get_text (GimpTextLayer *layer)
{
g_return_val_if_fail (GIMP_IS_TEXT_LAYER (layer), NULL);
return layer->text;
}
void
gimp_text_layer_set_text (GimpTextLayer *layer,
GimpText *text)
{
g_return_if_fail (GIMP_IS_TEXT_LAYER (layer));
g_return_if_fail (text == NULL || GIMP_IS_TEXT (text));
if (layer->text == text)
return;
if (layer->text)
{
g_signal_handlers_disconnect_by_func (layer->text,
G_CALLBACK (gimp_text_layer_text_changed),
layer);
g_object_unref (layer->text);
layer->text = NULL;
}
if (text)
{
layer->text = g_object_ref (text);
g_signal_connect_object (text, "changed",
G_CALLBACK (gimp_text_layer_text_changed),
layer, G_CONNECT_SWAPPED);
}
g_object_notify (G_OBJECT (layer), "text");
gimp_viewable_invalidate_preview (GIMP_VIEWABLE (layer));
}
static GimpItem *
gimp_text_layer_duplicate (GimpItem *item,
GType new_type)
{
GimpItem *new_item;
g_return_val_if_fail (g_type_is_a (new_type, GIMP_TYPE_DRAWABLE), NULL);
new_item = GIMP_ITEM_CLASS (parent_class)->duplicate (item, new_type);
if (GIMP_IS_TEXT_LAYER (new_item))
{
GimpTextLayer *layer = GIMP_TEXT_LAYER (item);
GimpTextLayer *new_layer = GIMP_TEXT_LAYER (new_item);
gimp_config_sync (G_OBJECT (layer), G_OBJECT (new_layer), 0);
if (layer->text)
{
GimpText *text = gimp_config_duplicate (GIMP_CONFIG (layer->text));
gimp_text_layer_set_text (new_layer, text);
g_object_unref (text);
}
/* this is just the parasite name, not a pointer to the parasite */
if (layer->text_parasite)
new_layer->text_parasite = layer->text_parasite;
}
return new_item;
}
void
gimp_text_layer_set_xcf_flags (GimpTextLayer *text_layer,
guint32 flags)
{
g_return_if_fail (GIMP_IS_TEXT_LAYER (text_layer));
g_object_set (text_layer,
"auto-rename", (flags & TEXT_LAYER_XCF_DONT_AUTO_RENAME) == 0,
"modified", (flags & TEXT_LAYER_XCF_MODIFIED) != 0,
NULL);
}
GimpUndo *
gimp_image_undo_push_text_layer_modified (GimpImage *image,
const gchar *undo_desc,
GimpTextLayer *layer)
{
g_return_val_if_fail (GIMP_IS_IMAGE (image), NULL);
g_return_val_if_fail (GIMP_IS_TEXT_LAYER (layer), NULL);
g_return_val_if_fail (gimp_item_is_attached (GIMP_ITEM (layer)), NULL);
return gimp_image_undo_push (image, GIMP_TYPE_TEXT_UNDO,
GIMP_UNDO_TEXT_LAYER_MODIFIED, undo_desc,
GIMP_DIRTY_ITEM_META,
"item", layer,
NULL);
}
guint32
gimp_text_layer_get_xcf_flags (GimpTextLayer *text_layer)
{
guint flags = 0;
g_return_val_if_fail (GIMP_IS_TEXT_LAYER (text_layer), 0);
if (! text_layer->auto_rename)
flags |= TEXT_LAYER_XCF_DONT_AUTO_RENAME;
if (text_layer->modified)
flags |= TEXT_LAYER_XCF_MODIFIED;
return flags;
}
/**
* gimp_text_layer_discard:
* @layer: a #GimpTextLayer
*
* Discards the text information. This makes @layer behave like a
* normal layer.
*/
void
gimp_text_layer_discard (GimpTextLayer *layer)
{
g_return_if_fail (GIMP_IS_TEXT_LAYER (layer));
g_return_if_fail (gimp_item_is_attached (GIMP_ITEM (layer)));
if (! layer->text)
return;
gimp_image_undo_push_text_layer (gimp_item_get_image (GIMP_ITEM (layer)),
_("Discard Text Information"),
layer, NULL);
gimp_text_layer_set_text (layer, NULL);
}
GimpUndo *
gimp_image_undo_push_text_layer (GimpImage *image,
const gchar *undo_desc,
GimpTextLayer *layer,
const GParamSpec *pspec)
{
g_return_val_if_fail (GIMP_IS_IMAGE (image), NULL);
g_return_val_if_fail (GIMP_IS_TEXT_LAYER (layer), NULL);
g_return_val_if_fail (gimp_item_is_attached (GIMP_ITEM (layer)), NULL);
return gimp_image_undo_push (image, GIMP_TYPE_TEXT_UNDO,
GIMP_UNDO_TEXT_LAYER, undo_desc,
GIMP_DIRTY_ITEM | GIMP_DIRTY_DRAWABLE,
"item", layer,
"param", pspec,
NULL);
}
GimpTextLayer *
gimp_image_pick_text_layer (const GimpImage *image,
gint x,
gint y)
{
GList *all_layers;
GList *list;
g_return_val_if_fail (GIMP_IS_IMAGE (image), NULL);
all_layers = gimp_image_get_layer_list (image);
for (list = all_layers; list; list = g_list_next (list))
{
GimpLayer *layer = list->data;
gint off_x, off_y;
gimp_item_get_offset (GIMP_ITEM (layer), &off_x, &off_y);
if (GIMP_IS_TEXT_LAYER (layer) &&
x >= off_x &&
y >= off_y &&
x < off_x + gimp_item_get_width (GIMP_ITEM (layer)) &&
y < off_y + gimp_item_get_height (GIMP_ITEM (layer)))
{
g_list_free (all_layers);
return GIMP_TEXT_LAYER (layer);
}
else if (gimp_pickable_get_opacity_at (GIMP_PICKABLE (layer),
x - off_x, y - off_y) > 63)
{
/* a normal layer covers any possible text layers below,
* bail out
*/
break;
}
}
g_list_free (all_layers);
return NULL;
}
static void
gimp_text_undo_constructed (GObject *object)
{
GimpTextUndo *text_undo = GIMP_TEXT_UNDO (object);
GimpTextLayer *layer;
G_OBJECT_CLASS (parent_class)->constructed (object);
g_assert (GIMP_IS_TEXT_LAYER (GIMP_ITEM_UNDO (text_undo)->item));
layer = GIMP_TEXT_LAYER (GIMP_ITEM_UNDO (text_undo)->item);
switch (GIMP_UNDO (object)->undo_type)
{
case GIMP_UNDO_TEXT_LAYER:
if (text_undo->pspec)
{
g_assert (text_undo->pspec->owner_type == GIMP_TYPE_TEXT);
text_undo->value = g_slice_new0 (GValue);
g_value_init (text_undo->value, text_undo->pspec->value_type);
g_object_get_property (G_OBJECT (layer->text),
text_undo->pspec->name, text_undo->value);
}
else if (layer->text)
{
text_undo->text = gimp_config_duplicate (GIMP_CONFIG (layer->text));
}
break;
case GIMP_UNDO_TEXT_LAYER_MODIFIED:
text_undo->modified = layer->modified;
break;
case GIMP_UNDO_TEXT_LAYER_CONVERT:
text_undo->format = gimp_drawable_get_format (GIMP_DRAWABLE (layer));
break;
default:
g_assert_not_reached ();
}
}
