/* GIMP - The GNU Image Manipulation Program * Copyright (C) 1995 Spencer Kimball and Peter Mattis * * gimplayertreeview.c * Copyright (C) 2001-2009 Michael Natterer * * This program is free software: you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 3 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program. If not, see . */ #include "config.h" #include #include #include #include "libgimpbase/gimpbase.h" #include "libgimpmath/gimpmath.h" #include "libgimpwidgets/gimpwidgets.h" #include "widgets-types.h" #include "core/gimp.h" #include "core/gimpchannel.h" #include "core/gimpcontainer.h" #include "core/gimpimage-undo.h" #include "core/gimpimage.h" #include "core/gimpitemundo.h" #include "core/gimplayer.h" #include "core/gimplayer-floating-selection.h" #include "core/gimplayer-new.h" #include "core/gimplayermask.h" #include "core/gimptreehandler.h" #include "text/gimptextlayer.h" #include "file/file-open.h" #include "gimpactiongroup.h" #include "gimpcellrendererviewable.h" #include "gimpcontainertreestore.h" #include "gimpcontainerview.h" #include "gimpdnd.h" #include "gimphelp-ids.h" #include "gimphighlightablebutton.h" #include "gimplayermodebox.h" #include "gimplayertreeview.h" #include "gimpspinscale.h" #include "gimpuimanager.h" #include "gimpviewrenderer.h" #include "gimpwidgets-utils.h" #include "gimp-intl.h" struct _GimpLayerTreeViewPrivate { GtkWidget *layer_mode_box; GtkAdjustment *opacity_adjustment; GtkWidget *lock_alpha_toggle; GtkWidget *anchor_button; gint model_column_mask; gint model_column_mask_visible; GtkCellRenderer *mask_cell; PangoAttrList *italic_attrs; PangoAttrList *bold_attrs; GimpTreeHandler *mode_changed_handler; GimpTreeHandler *opacity_changed_handler; GimpTreeHandler *lock_alpha_changed_handler; GimpTreeHandler *mask_changed_handler; GimpTreeHandler *alpha_changed_handler; }; static void gimp_layer_tree_view_view_iface_init (GimpContainerViewInterface *iface); static void gimp_layer_tree_view_constructed (GObject *object); static void gimp_layer_tree_view_finalize (GObject *object); static void gimp_layer_tree_view_set_container (GimpContainerView *view, GimpContainer *container); static void gimp_layer_tree_view_set_context (GimpContainerView *view, GimpContext *context); static gpointer gimp_layer_tree_view_insert_item (GimpContainerView *view, GimpViewable *viewable, gpointer parent_insert_data, gint index); static gboolean gimp_layer_tree_view_select_item (GimpContainerView *view, GimpViewable *item, gpointer insert_data); static void gimp_layer_tree_view_set_view_size (GimpContainerView *view); static gboolean gimp_layer_tree_view_drop_possible (GimpContainerTreeView *view, GimpDndType src_type, GimpViewable *src_viewable, GimpViewable *dest_viewable, GtkTreePath *drop_path, GtkTreeViewDropPosition drop_pos, GtkTreeViewDropPosition *return_drop_pos, GdkDragAction *return_drag_action); static void gimp_layer_tree_view_drop_color (GimpContainerTreeView *view, const GimpRGB *color, GimpViewable *dest_viewable, GtkTreeViewDropPosition drop_pos); static void gimp_layer_tree_view_drop_uri_list (GimpContainerTreeView *view, GList *uri_list, GimpViewable *dest_viewable, GtkTreeViewDropPosition drop_pos); static void gimp_layer_tree_view_drop_component (GimpContainerTreeView *tree_view, GimpImage *image, GimpChannelType component, GimpViewable *dest_viewable, GtkTreeViewDropPosition drop_pos); static void gimp_layer_tree_view_drop_pixbuf (GimpContainerTreeView *tree_view, GdkPixbuf *pixbuf, GimpViewable *dest_viewable, GtkTreeViewDropPosition drop_pos); static void gimp_layer_tree_view_set_image (GimpItemTreeView *view, GimpImage *image); static GimpItem * gimp_layer_tree_view_item_new (GimpImage *image); static void gimp_layer_tree_view_floating_selection_changed (GimpImage *image, GimpLayerTreeView *view); static void gimp_layer_tree_view_layer_mode_box_callback (GtkWidget *widget, const GParamSpec *pspec, GimpLayerTreeView *view); static void gimp_layer_tree_view_opacity_scale_changed (GtkAdjustment *adj, GimpLayerTreeView *view); static void gimp_layer_tree_view_lock_alpha_button_toggled (GtkWidget *widget, GimpLayerTreeView *view); static void gimp_layer_tree_view_layer_signal_handler (GimpLayer *layer, GimpLayerTreeView *view); static void gimp_layer_tree_view_update_options (GimpLayerTreeView *view, GimpLayer *layer); static void gimp_layer_tree_view_update_menu (GimpLayerTreeView *view, GimpLayer *layer); static void gimp_layer_tree_view_update_highlight (GimpLayerTreeView *view); static void gimp_layer_tree_view_mask_update (GimpLayerTreeView *view, GtkTreeIter *iter, GimpLayer *layer); static void gimp_layer_tree_view_mask_changed (GimpLayer *layer, GimpLayerTreeView *view); static void gimp_layer_tree_view_renderer_update (GimpViewRenderer *renderer, GimpLayerTreeView *view); static void gimp_layer_tree_view_update_borders (GimpLayerTreeView *view, GtkTreeIter *iter); static void gimp_layer_tree_view_mask_callback (GimpLayer *mask, GimpLayerTreeView *view); static void gimp_layer_tree_view_layer_clicked (GimpCellRendererViewable *cell, const gchar *path, GdkModifierType state, GimpLayerTreeView *view); static void gimp_layer_tree_view_mask_clicked (GimpCellRendererViewable *cell, const gchar *path, GdkModifierType state, GimpLayerTreeView *view); static void gimp_layer_tree_view_alpha_update (GimpLayerTreeView *view, GtkTreeIter *iter, GimpLayer *layer); static void gimp_layer_tree_view_alpha_changed (GimpLayer *layer, GimpLayerTreeView *view); G_DEFINE_TYPE_WITH_CODE (GimpLayerTreeView, gimp_layer_tree_view, GIMP_TYPE_DRAWABLE_TREE_VIEW, G_ADD_PRIVATE (GimpLayerTreeView) G_IMPLEMENT_INTERFACE (GIMP_TYPE_CONTAINER_VIEW, gimp_layer_tree_view_view_iface_init)) #define parent_class gimp_layer_tree_view_parent_class static GimpContainerViewInterface *parent_view_iface = NULL; static void gimp_layer_tree_view_class_init (GimpLayerTreeViewClass *klass) { GObjectClass *object_class = G_OBJECT_CLASS (klass); GimpContainerTreeViewClass *tree_view_class; GimpItemTreeViewClass *item_view_class; tree_view_class = GIMP_CONTAINER_TREE_VIEW_CLASS (klass); item_view_class = GIMP_ITEM_TREE_VIEW_CLASS (klass); object_class->constructed = gimp_layer_tree_view_constructed; object_class->finalize = gimp_layer_tree_view_finalize; tree_view_class->drop_possible = gimp_layer_tree_view_drop_possible; tree_view_class->drop_color = gimp_layer_tree_view_drop_color; tree_view_class->drop_uri_list = gimp_layer_tree_view_drop_uri_list; tree_view_class->drop_component = gimp_layer_tree_view_drop_component; tree_view_class->drop_pixbuf = gimp_layer_tree_view_drop_pixbuf; item_view_class->item_type = GIMP_TYPE_LAYER; item_view_class->signal_name = "active-layer-changed"; item_view_class->set_image = gimp_layer_tree_view_set_image; item_view_class->get_container = gimp_image_get_layers; item_view_class->get_active_item = (GimpGetItemFunc) gimp_image_get_active_layer; item_view_class->set_active_item = (GimpSetItemFunc) gimp_image_set_active_layer; item_view_class->add_item = (GimpAddItemFunc) gimp_image_add_layer; item_view_class->remove_item = (GimpRemoveItemFunc) gimp_image_remove_layer; item_view_class->new_item = gimp_layer_tree_view_item_new; item_view_class->action_group = "layers"; item_view_class->activate_action = "layers-edit"; item_view_class->new_action = "layers-new"; item_view_class->new_default_action = "layers-new-last-values"; item_view_class->raise_action = "layers-raise"; item_view_class->raise_top_action = "layers-raise-to-top"; item_view_class->lower_action = "layers-lower"; item_view_class->lower_bottom_action = "layers-lower-to-bottom"; item_view_class->duplicate_action = "layers-duplicate"; item_view_class->delete_action = "layers-delete"; item_view_class->lock_content_help_id = GIMP_HELP_LAYER_LOCK_PIXELS; item_view_class->lock_position_help_id = GIMP_HELP_LAYER_LOCK_POSITION; } static void gimp_layer_tree_view_view_iface_init (GimpContainerViewInterface *iface) { parent_view_iface = g_type_interface_peek_parent (iface); iface->set_container = gimp_layer_tree_view_set_container; iface->set_context = gimp_layer_tree_view_set_context; iface->insert_item = gimp_layer_tree_view_insert_item; iface->select_item = gimp_layer_tree_view_select_item; iface->set_view_size = gimp_layer_tree_view_set_view_size; iface->model_is_tree = TRUE; } static void gimp_layer_tree_view_init (GimpLayerTreeView *view) { GimpContainerTreeView *tree_view = GIMP_CONTAINER_TREE_VIEW (view); GtkWidget *scale; GtkWidget *hbox; GtkWidget *image; GtkIconSize icon_size; PangoAttribute *attr; view->priv = gimp_layer_tree_view_get_instance_private (view); view->priv->model_column_mask = gimp_container_tree_store_columns_add (tree_view->model_columns, &tree_view->n_model_columns, GIMP_TYPE_VIEW_RENDERER); view->priv->model_column_mask_visible = gimp_container_tree_store_columns_add (tree_view->model_columns, &tree_view->n_model_columns, G_TYPE_BOOLEAN); /* Paint mode menu */ view->priv->layer_mode_box = gimp_layer_mode_box_new (GIMP_LAYER_MODE_CONTEXT_LAYER); gimp_layer_mode_box_set_label (GIMP_LAYER_MODE_BOX (view->priv->layer_mode_box), _("Mode")); gimp_item_tree_view_add_options (GIMP_ITEM_TREE_VIEW (view), NULL, view->priv->layer_mode_box); g_signal_connect (view->priv->layer_mode_box, "notify::layer-mode", G_CALLBACK (gimp_layer_tree_view_layer_mode_box_callback), view); gimp_help_set_help_data (view->priv->layer_mode_box, NULL, GIMP_HELP_LAYER_DIALOG_PAINT_MODE_MENU); /* Opacity scale */ view->priv->opacity_adjustment = GTK_ADJUSTMENT (gtk_adjustment_new (100.0, 0.0, 100.0, 1.0, 10.0, 0.0)); scale = gimp_spin_scale_new (view->priv->opacity_adjustment, _("Opacity"), 1); gimp_help_set_help_data (scale, NULL, GIMP_HELP_LAYER_DIALOG_OPACITY_SCALE); gimp_item_tree_view_add_options (GIMP_ITEM_TREE_VIEW (view), NULL, scale); g_signal_connect (view->priv->opacity_adjustment, "value-changed", G_CALLBACK (gimp_layer_tree_view_opacity_scale_changed), view); /* Lock alpha toggle */ hbox = gimp_item_tree_view_get_lock_box (GIMP_ITEM_TREE_VIEW (view)); view->priv->lock_alpha_toggle = gtk_toggle_button_new (); gtk_box_pack_start (GTK_BOX (hbox), view->priv->lock_alpha_toggle, FALSE, FALSE, 0); gtk_widget_show (view->priv->lock_alpha_toggle); g_signal_connect (view->priv->lock_alpha_toggle, "toggled", G_CALLBACK (gimp_layer_tree_view_lock_alpha_button_toggled), view); gimp_help_set_help_data (view->priv->lock_alpha_toggle, _("Lock alpha channel"), GIMP_HELP_LAYER_LOCK_ALPHA); gtk_widget_style_get (GTK_WIDGET (view), "button-icon-size", &icon_size, NULL); image = gtk_image_new_from_icon_name (GIMP_ICON_TRANSPARENCY, icon_size); gtk_container_add (GTK_CONTAINER (view->priv->lock_alpha_toggle), image); gtk_widget_show (image); view->priv->italic_attrs = pango_attr_list_new (); attr = pango_attr_style_new (PANGO_STYLE_ITALIC); attr->start_index = 0; attr->end_index = -1; pango_attr_list_insert (view->priv->italic_attrs, attr); view->priv->bold_attrs = pango_attr_list_new (); attr = pango_attr_weight_new (PANGO_WEIGHT_BOLD); attr->start_index = 0; attr->end_index = -1; pango_attr_list_insert (view->priv->bold_attrs, attr); } static void gimp_layer_tree_view_constructed (GObject *object) { GimpContainerTreeView *tree_view = GIMP_CONTAINER_TREE_VIEW (object); GimpItemTreeView *item_view = GIMP_ITEM_TREE_VIEW (object); GimpLayerTreeView *layer_view = GIMP_LAYER_TREE_VIEW (object); GtkWidget *button; G_OBJECT_CLASS (parent_class)->constructed (object); gimp_highlightable_button_set_highlight_color ( GIMP_HIGHLIGHTABLE_BUTTON (gimp_item_tree_view_get_new_button (item_view)), GIMP_HIGHLIGHTABLE_BUTTON_COLOR_AFFIRMATIVE); gimp_highlightable_button_set_highlight_color ( GIMP_HIGHLIGHTABLE_BUTTON (gimp_item_tree_view_get_delete_button (item_view)), GIMP_HIGHLIGHTABLE_BUTTON_COLOR_NEGATIVE); layer_view->priv->mask_cell = gimp_cell_renderer_viewable_new (); gtk_tree_view_column_pack_start (tree_view->main_column, layer_view->priv->mask_cell, FALSE); gtk_tree_view_column_set_attributes (tree_view->main_column, layer_view->priv->mask_cell, "renderer", layer_view->priv->model_column_mask, "visible", layer_view->priv->model_column_mask_visible, NULL); gimp_container_tree_view_add_renderer_cell (tree_view, layer_view->priv->mask_cell); g_signal_connect (tree_view->renderer_cell, "clicked", G_CALLBACK (gimp_layer_tree_view_layer_clicked), layer_view); g_signal_connect (layer_view->priv->mask_cell, "clicked", G_CALLBACK (gimp_layer_tree_view_mask_clicked), layer_view); gimp_dnd_component_dest_add (GTK_WIDGET (tree_view->view), NULL, tree_view); gimp_dnd_viewable_dest_add (GTK_WIDGET (tree_view->view), GIMP_TYPE_CHANNEL, NULL, tree_view); gimp_dnd_viewable_dest_add (GTK_WIDGET (tree_view->view), GIMP_TYPE_LAYER_MASK, NULL, tree_view); gimp_dnd_uri_list_dest_add (GTK_WIDGET (tree_view->view), NULL, tree_view); gimp_dnd_pixbuf_dest_add (GTK_WIDGET (tree_view->view), NULL, tree_view); button = gimp_editor_add_action_button (GIMP_EDITOR (layer_view), "layers", "layers-new-group", NULL); gtk_box_reorder_child (gimp_editor_get_button_box (GIMP_EDITOR (layer_view)), button, 1); button = gimp_editor_add_action_button (GIMP_EDITOR (layer_view), "layers", "layers-anchor", NULL); layer_view->priv->anchor_button = button; gimp_highlightable_button_set_highlight_color ( GIMP_HIGHLIGHTABLE_BUTTON (button), GIMP_HIGHLIGHTABLE_BUTTON_COLOR_AFFIRMATIVE); gimp_container_view_enable_dnd (GIMP_CONTAINER_VIEW (layer_view), GTK_BUTTON (button), GIMP_TYPE_LAYER); gtk_box_reorder_child (gimp_editor_get_button_box (GIMP_EDITOR (layer_view)), button, 5); button = gimp_editor_add_action_button (GIMP_EDITOR (layer_view), "layers", "layers-merge-down-button", "layers-merge-group", GDK_SHIFT_MASK, "layers-merge-layers", GDK_CONTROL_MASK, "layers-merge-layers-last-values", GDK_CONTROL_MASK | GDK_SHIFT_MASK, NULL); gimp_container_view_enable_dnd (GIMP_CONTAINER_VIEW (layer_view), GTK_BUTTON (button), GIMP_TYPE_LAYER); gtk_box_reorder_child (gimp_editor_get_button_box (GIMP_EDITOR (layer_view)), button, 6); button = gimp_editor_add_action_button (GIMP_EDITOR (layer_view), "layers", "layers-mask-add-button", "layers-mask-add-last-values", gimp_get_extend_selection_mask (), "layers-mask-delete", gimp_get_modify_selection_mask (), "layers-mask-apply", gimp_get_extend_selection_mask () | gimp_get_modify_selection_mask (), NULL); gimp_container_view_enable_dnd (GIMP_CONTAINER_VIEW (layer_view), GTK_BUTTON (button), GIMP_TYPE_LAYER); gtk_box_reorder_child (gimp_editor_get_button_box (GIMP_EDITOR (layer_view)), button, 7); } static void gimp_layer_tree_view_finalize (GObject *object) { GimpLayerTreeView *layer_view = GIMP_LAYER_TREE_VIEW (object); if (layer_view->priv->italic_attrs) { pango_attr_list_unref (layer_view->priv->italic_attrs); layer_view->priv->italic_attrs = NULL; } if (layer_view->priv->bold_attrs) { pango_attr_list_unref (layer_view->priv->bold_attrs); layer_view->priv->bold_attrs = NULL; } G_OBJECT_CLASS (parent_class)->finalize (object); } /* GimpContainerView methods */ static void gimp_layer_tree_view_set_container (GimpContainerView *view, GimpContainer *container) { GimpLayerTreeView *layer_view = GIMP_LAYER_TREE_VIEW (view); GimpContainer *old_container; old_container = gimp_container_view_get_container (view); if (old_container) { gimp_tree_handler_disconnect (layer_view->priv->mode_changed_handler); layer_view->priv->mode_changed_handler = NULL; gimp_tree_handler_disconnect (layer_view->priv->opacity_changed_handler); layer_view->priv->opacity_changed_handler = NULL; gimp_tree_handler_disconnect (layer_view->priv->lock_alpha_changed_handler); layer_view->priv->lock_alpha_changed_handler = NULL; gimp_tree_handler_disconnect (layer_view->priv->mask_changed_handler); layer_view->priv->mask_changed_handler = NULL; gimp_tree_handler_disconnect (layer_view->priv->alpha_changed_handler); layer_view->priv->alpha_changed_handler = NULL; } parent_view_iface->set_container (view, container); if (container) { layer_view->priv->mode_changed_handler = gimp_tree_handler_connect (container, "mode-changed", G_CALLBACK (gimp_layer_tree_view_layer_signal_handler), view); layer_view->priv->opacity_changed_handler = gimp_tree_handler_connect (container, "opacity-changed", G_CALLBACK (gimp_layer_tree_view_layer_signal_handler), view); layer_view->priv->lock_alpha_changed_handler = gimp_tree_handler_connect (container, "lock-alpha-changed", G_CALLBACK (gimp_layer_tree_view_layer_signal_handler), view); layer_view->priv->mask_changed_handler = gimp_tree_handler_connect (container, "mask-changed", G_CALLBACK (gimp_layer_tree_view_mask_changed), view); layer_view->priv->alpha_changed_handler = gimp_tree_handler_connect (container, "alpha-changed", G_CALLBACK (gimp_layer_tree_view_alpha_changed), view); } } typedef struct { gint mask_column; GimpContext *context; } SetContextForeachData; static gboolean gimp_layer_tree_view_set_context_foreach (GtkTreeModel *model, GtkTreePath *path, GtkTreeIter *iter, gpointer data) { SetContextForeachData *context_data = data; GimpViewRenderer *renderer; gtk_tree_model_get (model, iter, context_data->mask_column, &renderer, -1); if (renderer) { gimp_view_renderer_set_context (renderer, context_data->context); g_object_unref (renderer); } return FALSE; } static void gimp_layer_tree_view_set_context (GimpContainerView *view, GimpContext *context) { GimpContainerTreeView *tree_view = GIMP_CONTAINER_TREE_VIEW (view); GimpLayerTreeView *layer_view = GIMP_LAYER_TREE_VIEW (view); parent_view_iface->set_context (view, context); if (tree_view->model) { SetContextForeachData context_data = { layer_view->priv->model_column_mask, context }; gtk_tree_model_foreach (tree_view->model, gimp_layer_tree_view_set_context_foreach, &context_data); } } static gpointer gimp_layer_tree_view_insert_item (GimpContainerView *view, GimpViewable *viewable, gpointer parent_insert_data, gint index) { GimpLayerTreeView *layer_view = GIMP_LAYER_TREE_VIEW (view); GimpLayer *layer; GtkTreeIter *iter; iter = parent_view_iface->insert_item (view, viewable, parent_insert_data, index); layer = GIMP_LAYER (viewable); if (! gimp_drawable_has_alpha (GIMP_DRAWABLE (layer))) gimp_layer_tree_view_alpha_update (layer_view, iter, layer); gimp_layer_tree_view_mask_update (layer_view, iter, layer); return iter; } static gboolean gimp_layer_tree_view_select_item (GimpContainerView *view, GimpViewable *item, gpointer insert_data) { GimpLayerTreeView *layer_view = GIMP_LAYER_TREE_VIEW (view); gboolean success; success = parent_view_iface->select_item (view, item, insert_data); if (item) { if (success) { gimp_layer_tree_view_update_borders (layer_view, (GtkTreeIter *) insert_data); gimp_layer_tree_view_update_options (layer_view, GIMP_LAYER (item)); gimp_layer_tree_view_update_menu (layer_view, GIMP_LAYER (item)); } } if (! success) { GimpEditor *editor = GIMP_EDITOR (view); /* currently, select_item() only ever fails when there is a floating * selection, which can be committed/canceled through the editor buttons. */ gimp_widget_blink (GTK_WIDGET (gimp_editor_get_button_box (editor))); } return success; } typedef struct { gint mask_column; gint view_size; gint border_width; } SetSizeForeachData; static gboolean gimp_layer_tree_view_set_view_size_foreach (GtkTreeModel *model, GtkTreePath *path, GtkTreeIter *iter, gpointer data) { SetSizeForeachData *size_data = data; GimpViewRenderer *renderer; gtk_tree_model_get (model, iter, size_data->mask_column, &renderer, -1); if (renderer) { gimp_view_renderer_set_size (renderer, size_data->view_size, size_data->border_width); g_object_unref (renderer); } return FALSE; } static void gimp_layer_tree_view_set_view_size (GimpContainerView *view) { GimpContainerTreeView *tree_view = GIMP_CONTAINER_TREE_VIEW (view); if (tree_view->model) { GimpLayerTreeView *layer_view = GIMP_LAYER_TREE_VIEW (view); SetSizeForeachData size_data; size_data.mask_column = layer_view->priv->model_column_mask; size_data.view_size = gimp_container_view_get_view_size (view, &size_data.border_width); gtk_tree_model_foreach (tree_view->model, gimp_layer_tree_view_set_view_size_foreach, &size_data); } parent_view_iface->set_view_size (view); } /* GimpContainerTreeView methods */ static gboolean gimp_layer_tree_view_drop_possible (GimpContainerTreeView *tree_view, GimpDndType src_type, GimpViewable *src_viewable, GimpViewable *dest_viewable, GtkTreePath *drop_path, GtkTreeViewDropPosition drop_pos, GtkTreeViewDropPosition *return_drop_pos, GdkDragAction *return_drag_action) { /* If we are dropping a new layer, check if the destination image * has a floating selection. */ if (src_type == GIMP_DND_TYPE_URI_LIST || src_type == GIMP_DND_TYPE_TEXT_PLAIN || src_type == GIMP_DND_TYPE_NETSCAPE_URL || src_type == GIMP_DND_TYPE_COMPONENT || src_type == GIMP_DND_TYPE_PIXBUF || GIMP_IS_DRAWABLE (src_viewable)) { GimpImage *dest_image = gimp_item_tree_view_get_image (GIMP_ITEM_TREE_VIEW (tree_view)); if (gimp_image_get_floating_selection (dest_image)) return FALSE; } return GIMP_CONTAINER_TREE_VIEW_CLASS (parent_class)->drop_possible (tree_view, src_type, src_viewable, dest_viewable, drop_path, drop_pos, return_drop_pos, return_drag_action); } static void gimp_layer_tree_view_drop_color (GimpContainerTreeView *view, const GimpRGB *color, GimpViewable *dest_viewable, GtkTreeViewDropPosition drop_pos) { if (gimp_item_is_text_layer (GIMP_ITEM (dest_viewable))) { gimp_text_layer_set (GIMP_TEXT_LAYER (dest_viewable), NULL, "color", color, NULL); gimp_image_flush (gimp_item_tree_view_get_image (GIMP_ITEM_TREE_VIEW (view))); return; } GIMP_CONTAINER_TREE_VIEW_CLASS (parent_class)->drop_color (view, color, dest_viewable, drop_pos); } static void gimp_layer_tree_view_drop_uri_list (GimpContainerTreeView *view, GList *uri_list, GimpViewable *dest_viewable, GtkTreeViewDropPosition drop_pos) { GimpItemTreeView *item_view = GIMP_ITEM_TREE_VIEW (view); GimpContainerView *cont_view = GIMP_CONTAINER_VIEW (view); GimpImage *image = gimp_item_tree_view_get_image (item_view); GimpLayer *parent; gint index; GList *list; index = gimp_item_tree_view_get_drop_index (item_view, dest_viewable, drop_pos, (GimpViewable **) &parent); g_object_ref (image); for (list = uri_list; list; list = g_list_next (list)) { const gchar *uri = list->data; GFile *file = g_file_new_for_uri (uri); GList *new_layers; GimpPDBStatusType status; GError *error = NULL; new_layers = file_open_layers (image->gimp, gimp_container_view_get_context (cont_view), NULL, image, FALSE, file, GIMP_RUN_INTERACTIVE, NULL, &status, &error); if (new_layers) { gimp_image_add_layers (image, new_layers, parent, index, 0, 0, gimp_image_get_width (image), gimp_image_get_height (image), _("Drop layers")); index += g_list_length (new_layers); g_list_free (new_layers); } else if (status != GIMP_PDB_CANCEL) { gimp_message (image->gimp, G_OBJECT (view), GIMP_MESSAGE_ERROR, _("Opening '%s' failed:\n\n%s"), gimp_file_get_utf8_name (file), error->message); g_clear_error (&error); } g_object_unref (file); } gimp_image_flush (image); g_object_unref (image); } static void gimp_layer_tree_view_drop_component (GimpContainerTreeView *tree_view, GimpImage *src_image, GimpChannelType component, GimpViewable *dest_viewable, GtkTreeViewDropPosition drop_pos) { GimpItemTreeView *item_view = GIMP_ITEM_TREE_VIEW (tree_view); GimpImage *image = gimp_item_tree_view_get_image (item_view); GimpChannel *channel; GimpItem *new_item; GimpLayer *parent; gint index; const gchar *desc; index = gimp_item_tree_view_get_drop_index (item_view, dest_viewable, drop_pos, (GimpViewable **) &parent); channel = gimp_channel_new_from_component (src_image, component, NULL, NULL); new_item = gimp_item_convert (GIMP_ITEM (channel), image, GIMP_TYPE_LAYER); g_object_unref (channel); gimp_enum_get_value (GIMP_TYPE_CHANNEL_TYPE, component, NULL, NULL, &desc, NULL); gimp_object_take_name (GIMP_OBJECT (new_item), g_strdup_printf (_("%s Channel Copy"), desc)); gimp_image_add_layer (image, GIMP_LAYER (new_item), parent, index, TRUE); gimp_image_flush (image); } static void gimp_layer_tree_view_drop_pixbuf (GimpContainerTreeView *tree_view, GdkPixbuf *pixbuf, GimpViewable *dest_viewable, GtkTreeViewDropPosition drop_pos) { GimpItemTreeView *item_view = GIMP_ITEM_TREE_VIEW (tree_view); GimpImage *image = gimp_item_tree_view_get_image (item_view); GimpLayer *new_layer; GimpLayer *parent; gint index; index = gimp_item_tree_view_get_drop_index (item_view, dest_viewable, drop_pos, (GimpViewable **) &parent); new_layer = gimp_layer_new_from_pixbuf (pixbuf, image, gimp_image_get_layer_format (image, TRUE), _("Dropped Buffer"), GIMP_OPACITY_OPAQUE, gimp_image_get_default_new_layer_mode (image)); gimp_image_add_layer (image, new_layer, parent, index, TRUE); gimp_image_flush (image); } /* GimpItemTreeView methods */ static void gimp_layer_tree_view_set_image (GimpItemTreeView *view, GimpImage *image) { GimpLayerTreeView *layer_view = GIMP_LAYER_TREE_VIEW (view); if (gimp_item_tree_view_get_image (view)) { g_signal_handlers_disconnect_by_func (gimp_item_tree_view_get_image (view), gimp_layer_tree_view_floating_selection_changed, view); } GIMP_ITEM_TREE_VIEW_CLASS (parent_class)->set_image (view, image); if (gimp_item_tree_view_get_image (view)) { g_signal_connect (gimp_item_tree_view_get_image (view), "floating-selection-changed", G_CALLBACK (gimp_layer_tree_view_floating_selection_changed), view); /* call gimp_layer_tree_view_floating_selection_changed() now, to update * the floating selection's row attributes. */ gimp_layer_tree_view_floating_selection_changed ( gimp_item_tree_view_get_image (view), layer_view); } gimp_layer_tree_view_update_highlight (layer_view); } static GimpItem * gimp_layer_tree_view_item_new (GimpImage *image) { GimpLayer *new_layer; gimp_image_undo_group_start (image, GIMP_UNDO_GROUP_EDIT_PASTE, _("New Layer")); new_layer = gimp_layer_new (image, gimp_image_get_width (image), gimp_image_get_height (image), gimp_image_get_layer_format (image, TRUE), NULL, GIMP_OPACITY_OPAQUE, gimp_image_get_default_new_layer_mode (image)); gimp_image_add_layer (image, new_layer, GIMP_IMAGE_ACTIVE_PARENT, -1, TRUE); gimp_image_undo_group_end (image); return GIMP_ITEM (new_layer); } /* callbacks */ static void gimp_layer_tree_view_floating_selection_changed (GimpImage *image, GimpLayerTreeView *layer_view) { GimpContainerTreeView *tree_view = GIMP_CONTAINER_TREE_VIEW (layer_view); GimpContainerView *view = GIMP_CONTAINER_VIEW (layer_view); GimpLayer *floating_sel; GtkTreeIter *iter; floating_sel = gimp_image_get_floating_selection (image); if (floating_sel) { iter = gimp_container_view_lookup (view, (GimpViewable *) floating_sel); if (iter) gtk_tree_store_set (GTK_TREE_STORE (tree_view->model), iter, GIMP_CONTAINER_TREE_STORE_COLUMN_NAME_ATTRIBUTES, layer_view->priv->italic_attrs, -1); } else { GList *all_layers; GList *list; all_layers = gimp_image_get_layer_list (image); for (list = all_layers; list; list = g_list_next (list)) { GimpDrawable *drawable = list->data; iter = gimp_container_view_lookup (view, (GimpViewable *) drawable); if (iter) gtk_tree_store_set (GTK_TREE_STORE (tree_view->model), iter, GIMP_CONTAINER_TREE_STORE_COLUMN_NAME_ATTRIBUTES, gimp_drawable_has_alpha (drawable) ? NULL : layer_view->priv->bold_attrs, -1); } g_list_free (all_layers); } gimp_layer_tree_view_update_highlight (layer_view); } /* Paint Mode, Opacity and Lock alpha callbacks */ #define BLOCK() \ g_signal_handlers_block_by_func (layer, \ gimp_layer_tree_view_layer_signal_handler, view) #define UNBLOCK() \ g_signal_handlers_unblock_by_func (layer, \ gimp_layer_tree_view_layer_signal_handler, view) static void gimp_layer_tree_view_layer_mode_box_callback (GtkWidget *widget, const GParamSpec *pspec, GimpLayerTreeView *view) { GimpImage *image; GimpLayer *layer = NULL; image = gimp_item_tree_view_get_image (GIMP_ITEM_TREE_VIEW (view)); if (image) layer = (GimpLayer *) GIMP_ITEM_TREE_VIEW_GET_CLASS (view)->get_active_item (image); if (layer) { GimpLayerMode mode = gimp_layer_mode_box_get_mode (GIMP_LAYER_MODE_BOX (widget)); if (gimp_layer_get_mode (layer) != mode) { GimpUndo *undo; gboolean push_undo = TRUE; /* compress layer mode undos */ undo = gimp_image_undo_can_compress (image, GIMP_TYPE_ITEM_UNDO, GIMP_UNDO_LAYER_MODE); if (undo && GIMP_ITEM_UNDO (undo)->item == GIMP_ITEM (layer)) push_undo = FALSE; BLOCK(); gimp_layer_set_mode (layer, (GimpLayerMode) mode, push_undo); UNBLOCK(); gimp_image_flush (image); if (! push_undo) gimp_undo_refresh_preview (undo, gimp_container_view_get_context (GIMP_CONTAINER_VIEW (view))); } } } static void gimp_layer_tree_view_lock_alpha_button_toggled (GtkWidget *widget, GimpLayerTreeView *view) { GimpImage *image; GimpLayer *layer; image = gimp_item_tree_view_get_image (GIMP_ITEM_TREE_VIEW (view)); layer = (GimpLayer *) GIMP_ITEM_TREE_VIEW_GET_CLASS (view)->get_active_item (image); if (layer) { gboolean lock_alpha; lock_alpha = gtk_toggle_button_get_active (GTK_TOGGLE_BUTTON (widget)); if (gimp_layer_get_lock_alpha (layer) != lock_alpha) { GimpUndo *undo; gboolean push_undo = TRUE; /* compress lock alpha undos */ undo = gimp_image_undo_can_compress (image, GIMP_TYPE_ITEM_UNDO, GIMP_UNDO_LAYER_LOCK_ALPHA); if (undo && GIMP_ITEM_UNDO (undo)->item == GIMP_ITEM (layer)) push_undo = FALSE; BLOCK(); gimp_layer_set_lock_alpha (layer, lock_alpha, push_undo); UNBLOCK(); gimp_image_flush (image); } } } static void gimp_layer_tree_view_opacity_scale_changed (GtkAdjustment *adjustment, GimpLayerTreeView *view) { GimpImage *image; GimpLayer *layer; image = gimp_item_tree_view_get_image (GIMP_ITEM_TREE_VIEW (view)); layer = (GimpLayer *) GIMP_ITEM_TREE_VIEW_GET_CLASS (view)->get_active_item (image); if (layer) { gdouble opacity = gtk_adjustment_get_value (adjustment) / 100.0; if (gimp_layer_get_opacity (layer) != opacity) { GimpUndo *undo; gboolean push_undo = TRUE; /* compress opacity undos */ undo = gimp_image_undo_can_compress (image, GIMP_TYPE_ITEM_UNDO, GIMP_UNDO_LAYER_OPACITY); if (undo && GIMP_ITEM_UNDO (undo)->item == GIMP_ITEM (layer)) push_undo = FALSE; BLOCK(); gimp_layer_set_opacity (layer, opacity, push_undo); UNBLOCK(); gimp_image_flush (image); if (! push_undo) gimp_undo_refresh_preview (undo, gimp_container_view_get_context (GIMP_CONTAINER_VIEW (view))); } } } #undef BLOCK #undef UNBLOCK static void gimp_layer_tree_view_layer_signal_handler (GimpLayer *layer, GimpLayerTreeView *view) { GimpItemTreeView *item_view = GIMP_ITEM_TREE_VIEW (view); GimpLayer *active_layer; active_layer = (GimpLayer *) GIMP_ITEM_TREE_VIEW_GET_CLASS (view)->get_active_item (gimp_item_tree_view_get_image (item_view)); if (active_layer == layer) gimp_layer_tree_view_update_options (view, layer); } #define BLOCK(object,function) \ g_signal_handlers_block_by_func ((object), (function), view) #define UNBLOCK(object,function) \ g_signal_handlers_unblock_by_func ((object), (function), view) static void gimp_layer_tree_view_update_options (GimpLayerTreeView *view, GimpLayer *layer) { BLOCK (view->priv->layer_mode_box, gimp_layer_tree_view_layer_mode_box_callback); if (gimp_viewable_get_children (GIMP_VIEWABLE (layer)) == NULL) { gimp_layer_mode_box_set_context (GIMP_LAYER_MODE_BOX (view->priv->layer_mode_box), GIMP_LAYER_MODE_CONTEXT_LAYER); } else { gimp_layer_mode_box_set_context (GIMP_LAYER_MODE_BOX (view->priv->layer_mode_box), GIMP_LAYER_MODE_CONTEXT_GROUP); } gimp_layer_mode_box_set_mode (GIMP_LAYER_MODE_BOX (view->priv->layer_mode_box), gimp_layer_get_mode (layer)); UNBLOCK (view->priv->layer_mode_box, gimp_layer_tree_view_layer_mode_box_callback); if (gimp_layer_get_lock_alpha (layer) != gtk_toggle_button_get_active (GTK_TOGGLE_BUTTON (view->priv->lock_alpha_toggle))) { BLOCK (view->priv->lock_alpha_toggle, gimp_layer_tree_view_lock_alpha_button_toggled); gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (view->priv->lock_alpha_toggle), gimp_layer_get_lock_alpha (layer)); UNBLOCK (view->priv->lock_alpha_toggle, gimp_layer_tree_view_lock_alpha_button_toggled); } gtk_widget_set_sensitive (view->priv->lock_alpha_toggle, gimp_layer_can_lock_alpha (layer)); if (gimp_layer_get_opacity (layer) * 100.0 != gtk_adjustment_get_value (view->priv->opacity_adjustment)) { BLOCK (view->priv->opacity_adjustment, gimp_layer_tree_view_opacity_scale_changed); gtk_adjustment_set_value (view->priv->opacity_adjustment, gimp_layer_get_opacity (layer) * 100.0); UNBLOCK (view->priv->opacity_adjustment, gimp_layer_tree_view_opacity_scale_changed); } } #undef BLOCK #undef UNBLOCK static void gimp_layer_tree_view_update_menu (GimpLayerTreeView *layer_view, GimpLayer *layer) { GimpUIManager *ui_manager = gimp_editor_get_ui_manager (GIMP_EDITOR (layer_view)); GimpActionGroup *group; GimpLayerMask *mask; group = gimp_ui_manager_get_action_group (ui_manager, "layers"); mask = gimp_layer_get_mask (layer); gimp_action_group_set_action_active (group, "layers-mask-show", mask && gimp_layer_get_show_mask (layer)); gimp_action_group_set_action_active (group, "layers-mask-disable", mask && ! gimp_layer_get_apply_mask (layer)); gimp_action_group_set_action_active (group, "layers-mask-edit", mask && gimp_layer_get_edit_mask (layer)); } static void gimp_layer_tree_view_update_highlight (GimpLayerTreeView *layer_view) { GimpItemTreeView *item_view = GIMP_ITEM_TREE_VIEW (layer_view); GimpImage *image = gimp_item_tree_view_get_image (item_view); GimpLayer *floating_sel = NULL; if (image) floating_sel = gimp_image_get_floating_selection (image); gimp_highlightable_button_set_highlight ( GIMP_HIGHLIGHTABLE_BUTTON (gimp_item_tree_view_get_new_button (item_view)), floating_sel != NULL && ! GIMP_IS_CHANNEL (gimp_layer_get_floating_sel_drawable (floating_sel))); gimp_highlightable_button_set_highlight ( GIMP_HIGHLIGHTABLE_BUTTON (gimp_item_tree_view_get_delete_button (item_view)), floating_sel != NULL); gimp_highlightable_button_set_highlight ( GIMP_HIGHLIGHTABLE_BUTTON (layer_view->priv->anchor_button), floating_sel != NULL); } /* Layer Mask callbacks */ static void gimp_layer_tree_view_mask_update (GimpLayerTreeView *layer_view, GtkTreeIter *iter, GimpLayer *layer) { GimpContainerView *view = GIMP_CONTAINER_VIEW (layer_view); GimpContainerTreeView *tree_view = GIMP_CONTAINER_TREE_VIEW (layer_view); GimpLayerMask *mask; GimpViewRenderer *renderer = NULL; gboolean mask_visible = FALSE; mask = gimp_layer_get_mask (layer); if (mask) { GClosure *closure; gint view_size; gint border_width; view_size = gimp_container_view_get_view_size (view, &border_width); mask_visible = TRUE; renderer = gimp_view_renderer_new (gimp_container_view_get_context (view), G_TYPE_FROM_INSTANCE (mask), view_size, border_width, FALSE); gimp_view_renderer_set_viewable (renderer, GIMP_VIEWABLE (mask)); g_signal_connect (renderer, "update", G_CALLBACK (gimp_layer_tree_view_renderer_update), layer_view); closure = g_cclosure_new (G_CALLBACK (gimp_layer_tree_view_mask_callback), layer_view, NULL); g_object_watch_closure (G_OBJECT (renderer), closure); g_signal_connect_closure (layer, "apply-mask-changed", closure, FALSE); g_signal_connect_closure (layer, "edit-mask-changed", closure, FALSE); g_signal_connect_closure (layer, "show-mask-changed", closure, FALSE); } gtk_tree_store_set (GTK_TREE_STORE (tree_view->model), iter, layer_view->priv->model_column_mask, renderer, layer_view->priv->model_column_mask_visible, mask_visible, -1); gimp_layer_tree_view_update_borders (layer_view, iter); if (renderer) { gimp_view_renderer_remove_idle (renderer); g_object_unref (renderer); } } static void gimp_layer_tree_view_mask_changed (GimpLayer *layer, GimpLayerTreeView *layer_view) { GimpContainerView *view = GIMP_CONTAINER_VIEW (layer_view); GtkTreeIter *iter; iter = gimp_container_view_lookup (view, GIMP_VIEWABLE (layer)); if (iter) gimp_layer_tree_view_mask_update (layer_view, iter, layer); } static void gimp_layer_tree_view_renderer_update (GimpViewRenderer *renderer, GimpLayerTreeView *layer_view) { GimpContainerView *view = GIMP_CONTAINER_VIEW (layer_view); GimpContainerTreeView *tree_view = GIMP_CONTAINER_TREE_VIEW (layer_view); GimpLayerMask *mask; GtkTreeIter *iter; mask = GIMP_LAYER_MASK (renderer->viewable); iter = gimp_container_view_lookup (view, (GimpViewable *) gimp_layer_mask_get_layer (mask)); if (iter) { GtkTreePath *path; path = gtk_tree_model_get_path (tree_view->model, iter); gtk_tree_model_row_changed (tree_view->model, path, iter); gtk_tree_path_free (path); } } static void gimp_layer_tree_view_update_borders (GimpLayerTreeView *layer_view, GtkTreeIter *iter) { GimpContainerTreeView *tree_view = GIMP_CONTAINER_TREE_VIEW (layer_view); GimpViewRenderer *layer_renderer; GimpViewRenderer *mask_renderer; GimpLayer *layer; GimpLayerMask *mask = NULL; GimpViewBorderType layer_type = GIMP_VIEW_BORDER_BLACK; gtk_tree_model_get (tree_view->model, iter, GIMP_CONTAINER_TREE_STORE_COLUMN_RENDERER, &layer_renderer, layer_view->priv->model_column_mask, &mask_renderer, -1); layer = GIMP_LAYER (layer_renderer->viewable); if (mask_renderer) mask = GIMP_LAYER_MASK (mask_renderer->viewable); if (! mask || (mask && ! gimp_layer_get_edit_mask (layer))) layer_type = GIMP_VIEW_BORDER_WHITE; gimp_view_renderer_set_border_type (layer_renderer, layer_type); if (mask) { GimpViewBorderType mask_color = GIMP_VIEW_BORDER_BLACK; if (gimp_layer_get_show_mask (layer)) { mask_color = GIMP_VIEW_BORDER_GREEN; } else if (! gimp_layer_get_apply_mask (layer)) { mask_color = GIMP_VIEW_BORDER_RED; } else if (gimp_layer_get_edit_mask (layer)) { mask_color = GIMP_VIEW_BORDER_WHITE; } gimp_view_renderer_set_border_type (mask_renderer, mask_color); } if (layer_renderer) g_object_unref (layer_renderer); if (mask_renderer) g_object_unref (mask_renderer); } static void gimp_layer_tree_view_mask_callback (GimpLayer *layer, GimpLayerTreeView *layer_view) { GimpContainerView *view = GIMP_CONTAINER_VIEW (layer_view); GtkTreeIter *iter; iter = gimp_container_view_lookup (view, (GimpViewable *) layer); gimp_layer_tree_view_update_borders (layer_view, iter); } static void gimp_layer_tree_view_layer_clicked (GimpCellRendererViewable *cell, const gchar *path_str, GdkModifierType state, GimpLayerTreeView *layer_view) { GimpContainerTreeView *tree_view = GIMP_CONTAINER_TREE_VIEW (layer_view); GtkTreePath *path = gtk_tree_path_new_from_string (path_str); GtkTreeIter iter; if (gtk_tree_model_get_iter (tree_view->model, &iter, path) && ! (state & GDK_MOD1_MASK)) { GimpUIManager *ui_manager; GimpActionGroup *group; GimpViewRenderer *renderer; ui_manager = gimp_editor_get_ui_manager (GIMP_EDITOR (tree_view)); group = gimp_ui_manager_get_action_group (ui_manager, "layers"); gtk_tree_model_get (tree_view->model, &iter, GIMP_CONTAINER_TREE_STORE_COLUMN_RENDERER, &renderer, -1); if (renderer) { GimpLayer *layer = GIMP_LAYER (renderer->viewable); GimpLayerMask *mask = gimp_layer_get_mask (layer); if (state & gimp_get_extend_selection_mask ()) { if (state & gimp_get_modify_selection_mask ()) { /* Shift-Control-click apply a layer mask */ if (mask) gimp_ui_manager_activate_action (ui_manager, "layers", "layers-mask-apply"); } else { /* Shift-click add a layer mask with last values */ if (! mask) gimp_ui_manager_activate_action (ui_manager, "layers", "layers-mask-add-last-values"); } } else if (state & gimp_get_modify_selection_mask ()) { /* Control-click remove a layer mask */ if (mask) gimp_ui_manager_activate_action (ui_manager, "layers", "layers-mask-delete"); } else if (mask && gimp_layer_get_edit_mask (layer)) { /* other clicks activate the layer */ if (mask) gimp_action_group_set_action_active (group, "layers-mask-edit", FALSE); } g_object_unref (renderer); } } gtk_tree_path_free (path); } static void gimp_layer_tree_view_mask_clicked (GimpCellRendererViewable *cell, const gchar *path_str, GdkModifierType state, GimpLayerTreeView *layer_view) { GimpContainerTreeView *tree_view = GIMP_CONTAINER_TREE_VIEW (layer_view); GtkTreePath *path; GtkTreeIter iter; path = gtk_tree_path_new_from_string (path_str); if (gtk_tree_model_get_iter (tree_view->model, &iter, path)) { GimpViewRenderer *renderer; GimpUIManager *ui_manager; GimpActionGroup *group; ui_manager = gimp_editor_get_ui_manager (GIMP_EDITOR (tree_view)); group = gimp_ui_manager_get_action_group (ui_manager, "layers"); gtk_tree_model_get (tree_view->model, &iter, GIMP_CONTAINER_TREE_STORE_COLUMN_RENDERER, &renderer, -1); if (renderer) { GimpLayer *layer = GIMP_LAYER (renderer->viewable); if (state & GDK_MOD1_MASK) gimp_action_group_set_action_active (group, "layers-mask-show", ! gimp_layer_get_show_mask (layer)); else if (state & gimp_get_toggle_behavior_mask ()) gimp_action_group_set_action_active (group, "layers-mask-disable", gimp_layer_get_apply_mask (layer)); else if (! gimp_layer_get_edit_mask (layer)) gimp_action_group_set_action_active (group, "layers-mask-edit", TRUE); g_object_unref (renderer); } } gtk_tree_path_free (path); } /* GimpDrawable alpha callbacks */ static void gimp_layer_tree_view_alpha_update (GimpLayerTreeView *view, GtkTreeIter *iter, GimpLayer *layer) { GimpContainerTreeView *tree_view = GIMP_CONTAINER_TREE_VIEW (view); gtk_tree_store_set (GTK_TREE_STORE (tree_view->model), iter, GIMP_CONTAINER_TREE_STORE_COLUMN_NAME_ATTRIBUTES, gimp_drawable_has_alpha (GIMP_DRAWABLE (layer)) ? NULL : view->priv->bold_attrs, -1); } static void gimp_layer_tree_view_alpha_changed (GimpLayer *layer, GimpLayerTreeView *layer_view) { GimpContainerView *view = GIMP_CONTAINER_VIEW (layer_view); GtkTreeIter *iter; iter = gimp_container_view_lookup (view, (GimpViewable *) layer); if (iter) { GimpItemTreeView *item_view = GIMP_ITEM_TREE_VIEW (view); gimp_layer_tree_view_alpha_update (layer_view, iter, layer); /* update button states */ if (gimp_image_get_active_layer (gimp_item_tree_view_get_image (item_view)) == layer) gimp_container_view_select_item (GIMP_CONTAINER_VIEW (view), GIMP_VIEWABLE (layer)); } }