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gimp/app/widgets/gimpvectorstreeview.c
Jehan bcacf6e2ae app: "active item" concept => "selected items". 
After much thought, tests and discussions with Aryeom, we decided adding
back an active item concept additionally to the selected items ones is a
bad idea as it makes only usage unecessarily complex.
We will just have selected layers. Some kind of operations will work
when more than one item (layers, channels, vectors) are selected while
others will require exacty one item.

In particular, let's replace instances of gimp_image_(s|g)et_active_*()
by corresponding gimp_image_(s|g)et_selected_*(). Also replace single
item in various undo classes by GList of items.
Also "active-*-changed" GimpImage signals are no more, fully replaced by
"selected-*s-changed".

This is still work-in-progress.
2020-05-17 18:32:16 +02:00

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/* GIMP - The GNU Image Manipulation Program
* Copyright (C) 1995 Spencer Kimball and Peter Mattis
*
* gimpvectorstreeview.c
* Copyright (C) 2001-2009 Michael Natterer <mitch@gimp.org>
*
* 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 <https://www.gnu.org/licenses/>.
*/
#include "config.h"
#include <string.h>
#include <gegl.h>
#include <gtk/gtk.h>
#include "libgimpwidgets/gimpwidgets.h"
#include "widgets-types.h"
#include "core/gimp.h"
#include "core/gimpcontainer.h"
#include "core/gimpcontext.h"
#include "core/gimpimage.h"
#include "vectors/gimpvectors.h"
#include "vectors/gimpvectors-export.h"
#include "vectors/gimpvectors-import.h"
#include "gimpactiongroup.h"
#include "gimpcontainerview.h"
#include "gimpdnd.h"
#include "gimphelp-ids.h"
#include "gimpuimanager.h"
#include "gimpvectorstreeview.h"
#include "gimpwidgets-utils.h"
#include "gimp-intl.h"
static void gimp_vectors_tree_view_view_iface_init (GimpContainerViewInterface *iface);
static void gimp_vectors_tree_view_constructed (GObject *object);
static void gimp_vectors_tree_view_set_container (GimpContainerView *view,
GimpContainer *container);
static void gimp_vectors_tree_view_drop_svg (GimpContainerTreeView *tree_view,
const gchar *svg_data,
gsize svg_data_len,
GimpViewable *dest_viewable,
GtkTreeViewDropPosition drop_pos);
static GimpItem * gimp_vectors_tree_view_item_new (GimpImage *image);
static guchar * gimp_vectors_tree_view_drag_svg (GtkWidget *widget,
gsize *svg_data_len,
gpointer data);
G_DEFINE_TYPE_WITH_CODE (GimpVectorsTreeView, gimp_vectors_tree_view,
GIMP_TYPE_ITEM_TREE_VIEW,
G_IMPLEMENT_INTERFACE (GIMP_TYPE_CONTAINER_VIEW,
gimp_vectors_tree_view_view_iface_init))
#define parent_class gimp_vectors_tree_view_parent_class
static GimpContainerViewInterface *parent_view_iface = NULL;
static void
gimp_vectors_tree_view_class_init (GimpVectorsTreeViewClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
GimpContainerTreeViewClass *view_class = GIMP_CONTAINER_TREE_VIEW_CLASS (klass);
GimpItemTreeViewClass *iv_class = GIMP_ITEM_TREE_VIEW_CLASS (klass);
object_class->constructed = gimp_vectors_tree_view_constructed;
view_class->drop_svg = gimp_vectors_tree_view_drop_svg;
iv_class->item_type = GIMP_TYPE_VECTORS;
iv_class->signal_name = "selected-vectors-changed";
iv_class->get_container = gimp_image_get_vectors;
iv_class->get_active_item = (GimpGetItemFunc) gimp_image_get_active_vectors;
iv_class->set_active_item = (GimpSetItemFunc) gimp_image_set_active_vectors;
iv_class->get_selected_items = (GimpGetItemsFunc) gimp_image_get_selected_vectors;
iv_class->set_selected_items = (GimpSetItemsFunc) gimp_image_set_selected_vectors;
iv_class->add_item = (GimpAddItemFunc) gimp_image_add_vectors;
iv_class->remove_item = (GimpRemoveItemFunc) gimp_image_remove_vectors;
iv_class->new_item = gimp_vectors_tree_view_item_new;
iv_class->action_group = "vectors";
iv_class->activate_action = "vectors-edit";
iv_class->new_action = "vectors-new";
iv_class->new_default_action = "vectors-new-last-values";
iv_class->raise_action = "vectors-raise";
iv_class->raise_top_action = "vectors-raise-to-top";
iv_class->lower_action = "vectors-lower";
iv_class->lower_bottom_action = "vectors-lower-to-bottom";
iv_class->duplicate_action = "vectors-duplicate";
iv_class->delete_action = "vectors-delete";
iv_class->lock_content_icon_name = GIMP_ICON_TOOL_PATH;
iv_class->lock_content_tooltip = _("Lock path strokes");
iv_class->lock_content_help_id = GIMP_HELP_PATH_LOCK_STROKES;
iv_class->lock_position_icon_name = GIMP_ICON_TOOL_MOVE;
iv_class->lock_position_tooltip = _("Lock path position");
iv_class->lock_position_help_id = GIMP_HELP_PATH_LOCK_POSITION;
}
static void
gimp_vectors_tree_view_view_iface_init (GimpContainerViewInterface *iface)
{
parent_view_iface = g_type_interface_peek_parent (iface);
iface->set_container = gimp_vectors_tree_view_set_container;
}
static void
gimp_vectors_tree_view_init (GimpVectorsTreeView *view)
{
}
static void
gimp_vectors_tree_view_constructed (GObject *object)
{
GimpEditor *editor = GIMP_EDITOR (object);
GimpContainerTreeView *tree_view = GIMP_CONTAINER_TREE_VIEW (object);
GimpVectorsTreeView *view = GIMP_VECTORS_TREE_VIEW (object);
GdkModifierType extend_mask;
GdkModifierType modify_mask;
G_OBJECT_CLASS (parent_class)->constructed (object);
extend_mask = gtk_widget_get_modifier_mask (GTK_WIDGET (object),
GDK_MODIFIER_INTENT_EXTEND_SELECTION);
modify_mask = gtk_widget_get_modifier_mask (GTK_WIDGET (object),
GDK_MODIFIER_INTENT_MODIFY_SELECTION);
view->toselection_button =
gimp_editor_add_action_button (editor, "vectors",
"vectors-selection-replace",
"vectors-selection-add",
extend_mask,
"vectors-selection-subtract",
modify_mask,
"vectors-selection-intersect",
extend_mask | modify_mask,
NULL);
gimp_container_view_enable_dnd (GIMP_CONTAINER_VIEW (editor),
GTK_BUTTON (view->toselection_button),
GIMP_TYPE_VECTORS);
gtk_box_reorder_child (gimp_editor_get_button_box (editor),
view->toselection_button, 4);
view->tovectors_button =
gimp_editor_add_action_button (editor, "vectors",
"vectors-selection-to-vectors",
"vectors-selection-to-vectors-advanced",
GDK_SHIFT_MASK,
NULL);
gtk_box_reorder_child (gimp_editor_get_button_box (editor),
view->tovectors_button, 5);
view->stroke_button =
gimp_editor_add_action_button (editor, "vectors",
"vectors-stroke",
"vectors-stroke-last-values",
GDK_SHIFT_MASK,
NULL);
gimp_container_view_enable_dnd (GIMP_CONTAINER_VIEW (editor),
GTK_BUTTON (view->stroke_button),
GIMP_TYPE_VECTORS);
gtk_box_reorder_child (gimp_editor_get_button_box (editor),
view->stroke_button, 6);
gimp_dnd_svg_dest_add (GTK_WIDGET (tree_view->view), NULL, view);
}
static void
gimp_vectors_tree_view_set_container (GimpContainerView *view,
GimpContainer *container)
{
GimpContainerTreeView *tree_view = GIMP_CONTAINER_TREE_VIEW (view);
GimpContainer *old_container;
old_container = gimp_container_view_get_container (GIMP_CONTAINER_VIEW (view));
if (old_container && ! container)
{
gimp_dnd_svg_source_remove (GTK_WIDGET (tree_view->view));
}
parent_view_iface->set_container (view, container);
if (! old_container && container)
{
gimp_dnd_svg_source_add (GTK_WIDGET (tree_view->view),
gimp_vectors_tree_view_drag_svg,
tree_view);
}
}
static void
gimp_vectors_tree_view_drop_svg (GimpContainerTreeView *tree_view,
const gchar *svg_data,
gsize svg_data_len,
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);
GimpVectors *parent;
gint index;
GError *error = NULL;
if (image->gimp->be_verbose)
g_print ("%s: SVG dropped (len = %d)\n", G_STRFUNC, (gint) svg_data_len);
index = gimp_item_tree_view_get_drop_index (item_view, dest_viewable,
drop_pos,
(GimpViewable **) &parent);
if (! gimp_vectors_import_buffer (image, svg_data, svg_data_len,
TRUE, FALSE, parent, index, NULL, &error))
{
gimp_message_literal (image->gimp,
G_OBJECT (tree_view), GIMP_MESSAGE_ERROR,
error->message);
g_clear_error (&error);
}
else
{
gimp_image_flush (image);
}
}
static GimpItem *
gimp_vectors_tree_view_item_new (GimpImage *image)
{
GimpVectors *new_vectors;
new_vectors = gimp_vectors_new (image, _("Path"));
gimp_image_add_vectors (image, new_vectors,
GIMP_IMAGE_ACTIVE_PARENT, -1, TRUE);
return GIMP_ITEM (new_vectors);
}
static guchar *
gimp_vectors_tree_view_drag_svg (GtkWidget *widget,
gsize *svg_data_len,
gpointer data)
{
GimpItemTreeView *view = GIMP_ITEM_TREE_VIEW (data);
GimpImage *image = gimp_item_tree_view_get_image (view);
GimpItem *item;
gchar *svg_data = NULL;
item = GIMP_ITEM_TREE_VIEW_GET_CLASS (view)->get_active_item (image);
*svg_data_len = 0;
if (item)
{
svg_data = gimp_vectors_export_string (image, GIMP_VECTORS (item));
if (svg_data)
*svg_data_len = strlen (svg_data);
}
return (guchar *) svg_data;
}
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