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gimp/app/widgets/gimpcontainerlistview.c

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/* The GIMP -- an image manipulation program
* Copyright (C) 1995 Spencer Kimball and Peter Mattis
*
* 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 2 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, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#include "config.h"
#include <stdio.h>
#include <gtk/gtk.h>
#include "apptypes.h"
#include "appenv.h"
#include "gimpcontainer.h"
#include "gimpcontainerlistview.h"
#include "gimpcontext.h"
#include "gimpdnd.h"
#include "gimplist.h"
#include "gimppreview.h"
static void gimp_container_list_view_class_init (GimpContainerListViewClass *klass);
static void gimp_container_list_view_init (GimpContainerListView *panel);
static void gimp_container_list_view_destroy (GtkObject *object);
static gpointer gimp_container_list_view_insert_item (GimpContainerView *view,
GimpViewable *viewable,
gint index);
static void gimp_container_list_view_remove_item (GimpContainerView *view,
GimpViewable *viewable,
gpointer insert_data);
static void gimp_container_list_view_reorder_item (GimpContainerView *view,
GimpViewable *viewable,
gint new_index,
gpointer insert_data);
static void gimp_container_list_view_select_item (GimpContainerView *view,
GimpViewable *viewable,
gpointer insert_data);
static void gimp_container_list_view_clear_items (GimpContainerView *view);
static void gimp_container_list_view_set_preview_size (GimpContainerView *view);
static void gimp_container_list_view_name_changed (GimpViewable *viewable,
GtkLabel *label);
static void gimp_container_list_view_item_selected (GtkWidget *widget,
GtkWidget *child,
gpointer data);
static gint gimp_container_list_view_item_activate (GtkWidget *widget,
GdkEventButton *bevent,
gpointer data);
static GimpViewable * gimp_container_list_view_drag_viewable (GtkWidget *widget,
gpointer data);
static GimpContainerViewClass *parent_class = NULL;
GtkType
gimp_container_list_view_get_type (void)
{
static guint list_view_type = 0;
if (! list_view_type)
{
GtkTypeInfo list_view_info =
{
"GimpContainerListView",
sizeof (GimpContainerListView),
sizeof (GimpContainerListViewClass),
(GtkClassInitFunc) gimp_container_list_view_class_init,
(GtkObjectInitFunc) gimp_container_list_view_init,
/* reserved_1 */ NULL,
/* reserved_2 */ NULL,
(GtkClassInitFunc) NULL
};
list_view_type = gtk_type_unique (GIMP_TYPE_CONTAINER_VIEW,
&list_view_info);
}
return list_view_type;
}
static void
gimp_container_list_view_class_init (GimpContainerListViewClass *klass)
{
GtkObjectClass *object_class;
GimpContainerViewClass *container_view_class;
object_class = (GtkObjectClass *) klass;
container_view_class = (GimpContainerViewClass *) klass;
parent_class = gtk_type_class (GIMP_TYPE_CONTAINER_VIEW);
object_class->destroy = gimp_container_list_view_destroy;
container_view_class->insert_item = gimp_container_list_view_insert_item;
container_view_class->remove_item = gimp_container_list_view_remove_item;
container_view_class->reorder_item = gimp_container_list_view_reorder_item;
container_view_class->select_item = gimp_container_list_view_select_item;
container_view_class->clear_items = gimp_container_list_view_clear_items;
container_view_class->set_preview_size = gimp_container_list_view_set_preview_size;
}
static void
gimp_container_list_view_init (GimpContainerListView *list_view)
{
list_view->scrolled_win = gtk_scrolled_window_new (NULL, NULL);
gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (list_view->scrolled_win),
GTK_POLICY_AUTOMATIC,
GTK_POLICY_ALWAYS);
gtk_box_pack_start (GTK_BOX (list_view), list_view->scrolled_win,
TRUE, TRUE, 0);
list_view->gtk_list = gtk_list_new ();
gtk_scrolled_window_add_with_viewport
(GTK_SCROLLED_WINDOW (list_view->scrolled_win),
list_view->gtk_list);
gtk_list_set_selection_mode (GTK_LIST (list_view->gtk_list),
GTK_SELECTION_SINGLE);
gtk_container_set_focus_vadjustment
(GTK_CONTAINER (list_view->gtk_list),
gtk_scrolled_window_get_vadjustment (GTK_SCROLLED_WINDOW
(list_view->scrolled_win)));
GTK_WIDGET_UNSET_FLAGS (GTK_SCROLLED_WINDOW
(list_view->scrolled_win)->vscrollbar,
GTK_CAN_FOCUS);
gtk_signal_connect_while_alive
(GTK_OBJECT (list_view->gtk_list), "select_child",
GTK_SIGNAL_FUNC (gimp_container_list_view_item_selected),
list_view,
GTK_OBJECT (list_view));
gtk_widget_show (list_view->gtk_list);
gtk_widget_show (list_view->scrolled_win);
}
static void
gimp_container_list_view_destroy (GtkObject *object)
{
GimpContainerListView *list_view;
list_view = GIMP_CONTAINER_LIST_VIEW (object);
if (GTK_OBJECT_CLASS (parent_class)->destroy)
GTK_OBJECT_CLASS (parent_class)->destroy (object);
}
GtkWidget *
gimp_container_list_view_new (GimpContainer *container,
GimpContext *context,
gint preview_size,
gint min_items_x,
gint min_items_y)
{
GimpContainerListView *list_view;
GimpContainerView *view;
gint window_border;
g_return_val_if_fail (! container || GIMP_IS_CONTAINER (container), NULL);
g_return_val_if_fail (! context || GIMP_IS_CONTEXT (context), NULL);
g_return_val_if_fail (preview_size > 0 && preview_size <= 64, NULL);
g_return_val_if_fail (min_items_x > 0 && min_items_x <= 64, NULL);
g_return_val_if_fail (min_items_y > 0 && min_items_y <= 64, NULL);
list_view = gtk_type_new (GIMP_TYPE_CONTAINER_LIST_VIEW);
view = GIMP_CONTAINER_VIEW (list_view);
view->preview_size = preview_size;
window_border =
GTK_SCROLLED_WINDOW (list_view->scrolled_win)->vscrollbar->requisition.width +
GTK_SCROLLED_WINDOW_CLASS (GTK_OBJECT (list_view->scrolled_win)->klass)->scrollbar_spacing +
list_view->scrolled_win->style->klass->xthickness * 4;
gtk_widget_set_usize (list_view->gtk_list->parent,
(preview_size + 2) * min_items_x + window_border,
(preview_size + 6) * min_items_y + window_border);
if (container)
gimp_container_view_set_container (view, container);
gimp_container_view_set_context (view, context);
return GTK_WIDGET (list_view);
}
static gpointer
gimp_container_list_view_insert_item (GimpContainerView *view,
GimpViewable *viewable,
gint index)
{
GimpContainerListView *list_view;
GtkWidget *list_item;
GtkWidget *hbox;
GtkWidget *preview;
GtkWidget *label;
GList *list;
list_view = GIMP_CONTAINER_LIST_VIEW (view);
list_item = gtk_list_item_new ();
hbox = gtk_hbox_new (FALSE, 8);
gtk_container_set_border_width (GTK_CONTAINER (hbox), 2);
gtk_container_add (GTK_CONTAINER (list_item), hbox);
gtk_widget_show (hbox);
preview = gimp_preview_new (viewable, view->preview_size, 1, FALSE);
gtk_box_pack_start (GTK_BOX (hbox), preview, FALSE, FALSE, 0);
gtk_widget_show (preview);
gtk_object_set_data (GTK_OBJECT (list_item), "preview", preview);
label = gtk_label_new (gimp_object_get_name (GIMP_OBJECT (viewable)));
gtk_box_pack_start (GTK_BOX (hbox), label, FALSE, FALSE, 0);
gtk_widget_show (label);
gtk_object_set_data (GTK_OBJECT (list_item), "label", label);
gtk_signal_connect_while_alive
(GTK_OBJECT (viewable), "name_changed",
GTK_SIGNAL_FUNC (gimp_container_list_view_name_changed),
label,
GTK_OBJECT (list_view));
gtk_signal_connect (GTK_OBJECT (list_item), "button_press_event",
GTK_SIGNAL_FUNC (gimp_container_list_view_item_activate),
list_view);
gimp_gtk_drag_source_set_by_type (list_item,
GDK_BUTTON1_MASK | GDK_BUTTON2_MASK,
view->container->children_type,
GDK_ACTION_COPY);
gimp_dnd_viewable_source_set (GTK_WIDGET (list_item),
view->container->children_type,
gimp_container_list_view_drag_viewable,
list_view);
gtk_widget_show (list_item);
list = g_list_prepend (NULL, list_item);
if (index == -1)
gtk_list_append_items (GTK_LIST (list_view->gtk_list), list);
else
gtk_list_insert_items (GTK_LIST (list_view->gtk_list), list, index);
return (gpointer) list_item;
}
static void
gimp_container_list_view_remove_item (GimpContainerView *view,
GimpViewable *viewable,
gpointer insert_data)
{
GimpContainerListView *list_view;
GtkWidget *list_item;
list_view = GIMP_CONTAINER_LIST_VIEW (view);
if (insert_data)
list_item = GTK_WIDGET (insert_data);
else
list_item = NULL;
if (list_item)
{
GList *list;
list = g_list_prepend (NULL, list_item);
gtk_list_remove_items (GTK_LIST (list_view->gtk_list), list);
}
}
static void
gimp_container_list_view_reorder_item (GimpContainerView *view,
GimpViewable *viewable,
gint new_index,
gpointer insert_data)
{
GimpContainerListView *list_view;
GtkWidget *list_item;
gboolean selected;
list_view = GIMP_CONTAINER_LIST_VIEW (view);
if (insert_data)
list_item = GTK_WIDGET (insert_data);
else
list_item = NULL;
if (list_item)
{
GList *list;
list = g_list_prepend (NULL, list_item);
selected = GTK_WIDGET_STATE (list_item) == GTK_STATE_SELECTED;
gtk_object_ref (GTK_OBJECT (list_item));
gtk_list_remove_items (GTK_LIST (list_view->gtk_list), list);
if (new_index == -1 || new_index == view->container->num_children - 1)
gtk_list_append_items (GTK_LIST (list_view->gtk_list), list);
else
gtk_list_insert_items (GTK_LIST (list_view->gtk_list), list, new_index);
if (selected)
gtk_list_select_child (GTK_LIST (list_view->gtk_list), list_item);
gtk_object_unref (GTK_OBJECT (list_item));
}
}
static void
gimp_container_list_view_select_item (GimpContainerView *view,
GimpViewable *viewable,
gpointer insert_data)
{
GimpContainerListView *list_view;
GtkWidget *list_item;
list_view = GIMP_CONTAINER_LIST_VIEW (view);
if (insert_data)
list_item = GTK_WIDGET (insert_data);
else
list_item = NULL;
if (list_item)
{
GtkAdjustment *adj;
gint item_height;
gint index;
adj = gtk_scrolled_window_get_vadjustment
(GTK_SCROLLED_WINDOW (list_view->scrolled_win));
item_height = list_item->allocation.height;
index = gimp_container_get_child_index (view->container,
GIMP_OBJECT (viewable));
gtk_signal_handler_block_by_func (GTK_OBJECT (list_view->gtk_list),
gimp_container_list_view_item_selected,
list_view);
gtk_list_select_child (GTK_LIST (list_view->gtk_list), list_item);
if (index * item_height < adj->value)
{
gtk_adjustment_set_value (adj, index * item_height);
}
else if ((index + 1) * item_height > adj->value + adj->page_size)
{
gtk_adjustment_set_value (adj,
(index + 1) * item_height - adj->page_size);
}
gtk_signal_handler_unblock_by_func (GTK_OBJECT (list_view->gtk_list),
gimp_container_list_view_item_selected,
list_view);
}
}
static void
gimp_container_list_view_clear_items (GimpContainerView *view)
{
GimpContainerListView *list_view;
list_view = GIMP_CONTAINER_LIST_VIEW (view);
gtk_list_clear_items (GTK_LIST (list_view->gtk_list), 0, -1);
if (GIMP_CONTAINER_VIEW_CLASS (parent_class)->clear_items)
GIMP_CONTAINER_VIEW_CLASS (parent_class)->clear_items (view);
}
static void
gimp_container_list_view_set_preview_size (GimpContainerView *view)
{
GimpContainerListView *list_view;
GList *list;
list_view = GIMP_CONTAINER_LIST_VIEW (view);
for (list = GTK_LIST (list_view->gtk_list)->children;
list;
list = g_list_next (list))
{
GimpPreview *preview;
preview = gtk_object_get_data (GTK_OBJECT (list->data), "preview");
gimp_preview_set_size (preview, view->preview_size);
}
gtk_widget_queue_resize (list_view->gtk_list);
}
static void
gimp_container_list_view_name_changed (GimpViewable *viewable,
GtkLabel *label)
{
gtk_label_set_text (label, gimp_object_get_name (GIMP_OBJECT (viewable)));
}
static void
gimp_container_list_view_item_selected (GtkWidget *widget,
GtkWidget *child,
gpointer data)
{
GimpViewable *viewable;
viewable = GIMP_PREVIEW (gtk_object_get_data (GTK_OBJECT (child),
"preview"))->viewable;
gimp_container_view_item_selected (GIMP_CONTAINER_VIEW (data), viewable);
}
static gint
gimp_container_list_view_item_activate (GtkWidget *widget,
GdkEventButton *bevent,
gpointer data)
{
if (bevent->type == GDK_2BUTTON_PRESS)
{
GimpViewable *viewable;
viewable = GIMP_PREVIEW (gtk_object_get_data (GTK_OBJECT (widget),
"preview"))->viewable;
gimp_container_view_item_activate (GIMP_CONTAINER_VIEW (data), viewable);
}
return FALSE;
}
static GimpViewable *
gimp_container_list_view_drag_viewable (GtkWidget *widget,
gpointer data)
{
GimpViewable *viewable;
viewable = GIMP_PREVIEW (gtk_object_get_data (GTK_OBJECT (widget),
"preview"))->viewable;
return viewable;
}
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