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/* -*- Mode: C; indent-tabs-mode: t; c-basic-offset: 8; tab-width: 8 -*- */
/* nautilus-drag.h - Common Drag & drop handling code shared by the icon container
and the list view.
Copyright (C) 2000 Eazel, Inc.
The Gnome Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public License as
published by the Free Software Foundation; either version 2 of the
License, or (at your option) any later version.
The Gnome Library 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
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with the Gnome Library; see the file COPYING.LIB. If not,
write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA.
Authors: Pavel Cisler <pavel@eazel.com>,
Ettore Perazzoli <ettore@gnu.org>
*/
#ifndef NAUTILUS_DRAG_H
#define NAUTILUS_DRAG_H
#include <gtk/gtkdnd.h>
#include "nautilus-file.h"
/* a set of defines stolen from the nautilus-icon-dnd.c file */
#define AUTOSCROLL_TIMEOUT_INTERVAL 100
/* in milliseconds */
#define AUTOSCROLL_INITIAL_DELAY 750000
/* in microseconds */
/* Item of the drag selection list */
typedef struct {
char *uri;
gboolean got_icon_position;
int icon_x, icon_y;
int icon_width, icon_height;
} DragSelectionItem;
/* Standard Drag & Drop types. */
typedef enum {
NAUTILUS_ICON_DND_GNOME_ICON_LIST,
NAUTILUS_ICON_DND_URI_LIST,
NAUTILUS_ICON_DND_URL,
NAUTILUS_ICON_DND_COLOR,
NAUTILUS_ICON_DND_BGIMAGE,
NAUTILUS_ICON_DND_KEYWORD,
NAUTILUS_ICON_DND_TEXT
} NautilusIconDndTargetType;
/* drag&drop-related information. */
typedef struct {
GtkTargetList *target_list;
/* Stuff saved at "receive data" time needed later in the drag. */
gboolean got_drop_data_type;
NautilusIconDndTargetType data_type;
GtkSelectionData *selection_data;
/* Start of the drag, in world coordinates. */
gdouble start_x, start_y;
/* List of DragSelectionItems, representing items being dragged, or NULL
* if data about them has not been received from the source yet.
*/
GList *selection_list;
/* Stipple for drawing icon shadows during DnD. */
GdkBitmap *stipple;
/* has the drop occured ? */
gboolean drop_occured;
/* whether or not need to clean up the previous dnd data */
gboolean need_to_destroy;
/* autoscrolling during dragging */
int auto_scroll_timeout_id;
gboolean waiting_to_autoscroll;
gint64 start_auto_scroll_in;
} NautilusDragInfo;
/* Drag & Drop target names. */
#define NAUTILUS_ICON_DND_GNOME_ICON_LIST_TYPE "x-special/gnome-icon-list"
#define NAUTILUS_ICON_DND_URI_LIST_TYPE "text/uri-list"
#define NAUTILUS_ICON_DND_TEXT_TYPE "text/plain"
#define NAUTILUS_ICON_DND_URL_TYPE "_NETSCAPE_URL"
#define NAUTILUS_ICON_DND_COLOR_TYPE "application/x-color"
#define NAUTILUS_ICON_DND_BGIMAGE_TYPE "property/bgimage"
#define NAUTILUS_ICON_DND_KEYWORD_TYPE "property/keyword"
#define ERASE_KEYWORD "erase"
typedef void (* NautilusDragEachSelectedItemDataGet) (const char *url,
int x, int y, int w, int h,
gpointer data);
typedef void (* NautilusDragEachSelectedItemIterator) (NautilusDragEachSelectedItemDataGet iteratee,
gpointer iterator_context,
gpointer data);
void nautilus_drag_init (NautilusDragInfo *drag_info,
const GtkTargetEntry *drag_types,
int drag_type_count,
GdkBitmap *stipple);
void nautilus_drag_finalize (NautilusDragInfo *drag_info);
DragSelectionItem *nautilus_drag_selection_item_new (void);
void nautilus_drag_destroy_selection_list (GList *selection_list);
GList *nautilus_drag_build_selection_list (GtkSelectionData *data);
gboolean nautilus_drag_items_local (const char *target_uri,
const GList *selection_list);
gboolean nautilus_drag_items_in_trash (const GList *selection_list);
gboolean nautilus_drag_can_accept_item (NautilusFile *drop_target_item,
const char *item_uri);
gboolean nautilus_drag_can_accept_items (NautilusFile *drop_target_item,
const GList *items);
void nautilus_drag_default_drop_action_for_icons (GdkDragContext *context,
const char *target_uri,
const GList *items,
int *default_action,
int *non_default_action);
gboolean nautilus_drag_drag_data_get (GtkWidget *widget,
GdkDragContext *context,
GtkSelectionData *selection_data,
guint info,
guint32 time,
gpointer container_context,
NautilusDragEachSelectedItemIterator each_selected_item_iterator);
int nautilus_drag_modifier_based_action (int default_action,
int non_default_action);
GdkDragAction nautilus_drag_drop_action_ask (GdkDragAction possible_actions);
gboolean nautilus_drag_autoscroll_in_scroll_region (GtkWidget *widget);
void nautilus_drag_autoscroll_calculate_delta (GtkWidget *widget,
float *x_scroll_delta,
float *y_scroll_delta);
void nautilus_drag_autoscroll_start (NautilusDragInfo *drag_info,
GtkWidget *widget,
GtkFunction callback,
gpointer user_data);
void nautilus_drag_autoscroll_stop (NautilusDragInfo *drag_info);
void nautilus_drag_file_receive_dropped_keyword (NautilusFile *file,
char *keyword);
#endif
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