mirror of
https://github.com/MidnightCommander/mc
synced 2024-12-25 13:57:00 +03:00
217 lines
8.8 KiB
C
217 lines
8.8 KiB
C
/* xdnd.c, xdnd.h - C program library for handling the Xdnd protocol
|
|
Copyright (C) 1998 Paul Sheer
|
|
|
|
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., 675 Mass Ave, Cambridge, MA 02139, USA.
|
|
*/
|
|
|
|
#ifndef _X_DND_H
|
|
#define _X_DND_H
|
|
|
|
#ifdef __cplusplus
|
|
extern "C" {
|
|
#endif
|
|
|
|
#define XDND_VERSION 2
|
|
|
|
/* XdndEnter */
|
|
#define XDND_THREE 3
|
|
#define XDND_ENTER_SOURCE_WIN(e) ((e)->xclient.data.l[0])
|
|
#define XDND_ENTER_THREE_TYPES(e) (((e)->xclient.data.l[1] & 0x1UL) == 0)
|
|
#define XDND_ENTER_THREE_TYPES_SET(e,b) (e)->xclient.data.l[1] = ((e)->xclient.data.l[1] & ~0x1UL) | (((b) == 0) ? 0 : 0x1UL)
|
|
#define XDND_ENTER_VERSION(e) ((e)->xclient.data.l[1] >> 24)
|
|
#define XDND_ENTER_VERSION_SET(e,v) (e)->xclient.data.l[1] = ((e)->xclient.data.l[1] & ~(0xFF << 24)) | ((v) << 24)
|
|
#define XDND_ENTER_TYPE(e,i) ((e)->xclient.data.l[2 + i]) /* i => (0, 1, 2) */
|
|
|
|
/* XdndPosition */
|
|
#define XDND_POSITION_SOURCE_WIN(e) ((e)->xclient.data.l[0])
|
|
#define XDND_POSITION_ROOT_X(e) ((e)->xclient.data.l[2] >> 16)
|
|
#define XDND_POSITION_ROOT_Y(e) ((e)->xclient.data.l[2] & 0xFFFFUL)
|
|
#define XDND_POSITION_ROOT_SET(e,x,y) (e)->xclient.data.l[2] = ((x) << 16) | ((y) & 0xFFFFUL)
|
|
#define XDND_POSITION_TIME(e) ((e)->xclient.data.l[3])
|
|
#define XDND_POSITION_ACTION(e) ((e)->xclient.data.l[4])
|
|
|
|
/* XdndStatus */
|
|
#define XDND_STATUS_TARGET_WIN(e) ((e)->xclient.data.l[0])
|
|
#define XDND_STATUS_WILL_ACCEPT(e) ((e)->xclient.data.l[1] & 0x1L)
|
|
#define XDND_STATUS_WILL_ACCEPT_SET(e,b) (e)->xclient.data.l[1] = ((e)->xclient.data.l[1] & ~0x1UL) | (((b) == 0) ? 0 : 0x1UL)
|
|
#define XDND_STATUS_WANT_POSITION(e) ((e)->xclient.data.l[1] & 0x2UL)
|
|
#define XDND_STATUS_WANT_POSITION_SET(e,b) (e)->xclient.data.l[1] = ((e)->xclient.data.l[1] & ~0x2UL) | (((b) == 0) ? 0 : 0x2UL)
|
|
#define XDND_STATUS_RECT_X(e) ((e)->xclient.data.l[2] >> 16)
|
|
#define XDND_STATUS_RECT_Y(e) ((e)->xclient.data.l[2] & 0xFFFFL)
|
|
#define XDND_STATUS_RECT_WIDTH(e) ((e)->xclient.data.l[3] >> 16)
|
|
#define XDND_STATUS_RECT_HEIGHT(e) ((e)->xclient.data.l[3] & 0xFFFFL)
|
|
#define XDND_STATUS_RECT_SET(e,x,y,w,h) {(e)->xclient.data.l[2] = ((x) << 16) | ((y) & 0xFFFFUL); (e)->xclient.data.l[3] = ((w) << 16) | ((h) & 0xFFFFUL); }
|
|
#define XDND_STATUS_ACTION(e) ((e)->xclient.data.l[4])
|
|
|
|
/* XdndLeave */
|
|
#define XDND_LEAVE_SOURCE_WIN(e) ((e)->xclient.data.l[0])
|
|
|
|
/* XdndDrop */
|
|
#define XDND_DROP_SOURCE_WIN(e) ((e)->xclient.data.l[0])
|
|
#define XDND_DROP_TIME(e) ((e)->xclient.data.l[2])
|
|
|
|
/* XdndFinished */
|
|
#define XDND_FINISHED_TARGET_WIN(e) ((e)->xclient.data.l[0])
|
|
|
|
struct _DndCursor {
|
|
int width, height;
|
|
int x, y;
|
|
unsigned char *image_data, *mask_data;
|
|
char *_action;
|
|
Pixmap image_pixmap, mask_pixmap;
|
|
Cursor cursor;
|
|
Atom action;
|
|
};
|
|
|
|
typedef struct _DndCursor DndCursor;
|
|
typedef struct _DndClass DndClass;
|
|
|
|
struct _DndClass {
|
|
/* insert chars sequentionally into the target widget, type will be the same as `desired_type'
|
|
returned from widget_apply_position. This may be called several times in succession
|
|
with sequention blocks of data. Must return non-zero on failure */
|
|
int (*widget_insert_drop) (DndClass * dnd, unsigned char *data, int length, int remaining, Window into, Window from, Atom type);
|
|
|
|
/* In response to DELETE requests : FIXME - not yet used */
|
|
int (*widget_delete_selection) (DndClass * dnd, Window window, Window from);
|
|
|
|
/* returns 1 if widget exists, zero otherwise. If this method is not
|
|
set then the code assumes that no widgets have support for recieving drops.
|
|
In this case none of the widget methods need be set. */
|
|
int (*widget_exists) (DndClass * dnd, Window window);
|
|
|
|
/* must update the widgets border to its default appearance */
|
|
void (*widget_apply_leave) (DndClass * dnd, Window widgets_window);
|
|
|
|
/* must update the widgets border to give the appearance of being able to recieve a drop,
|
|
plus return all data to pointers. As per the protocol, if the widget cannot
|
|
perform the action specified by `action' then it should return either XdndActionPrivate
|
|
or XdndActionCopy into supported_action (leaving 0 supported_action unchanged is equivalent
|
|
to XdndActionCopy). Returns 1 if ready to ok drop */
|
|
int (*widget_apply_position) (DndClass * dnd, Window widgets_window, Window from,
|
|
Atom action, int x, int y, Time t, Atom * typelist,
|
|
int *want_position, Atom * supported_action, Atom * desired_type,
|
|
XRectangle * rectangle);
|
|
|
|
/* returns drag data of the specified type. This will be one of `typelist' given to xdnd_drag */
|
|
void (*widget_get_data) (DndClass * dnd, Window window, unsigned char **data, int *length, Atom type);
|
|
|
|
/* this is called from with the main event loop if an expose event is recieved and is optional */
|
|
void (*handle_expose_events) (DndClass * dnd, XEvent * xevent);
|
|
|
|
/* creates a chooser dialog if the action is XdndActionAsk. Returns non-zero on cancel */
|
|
int (*action_choose_dialog) (DndClass * dnd, char **descriptions, Atom * actions, Atom * result);
|
|
|
|
void *pad1[8];
|
|
|
|
DndCursor *cursors;
|
|
|
|
Display *display;
|
|
|
|
Atom XdndAware;
|
|
Atom XdndSelection;
|
|
Atom XdndEnter;
|
|
Atom XdndLeave;
|
|
Atom XdndPosition;
|
|
Atom XdndDrop;
|
|
Atom XdndFinished;
|
|
Atom XdndStatus;
|
|
Atom XdndActionCopy;
|
|
Atom XdndActionMove;
|
|
Atom XdndActionLink;
|
|
Atom XdndActionAsk;
|
|
Atom XdndActionPrivate;
|
|
Atom XdndTypeList;
|
|
Atom XdndActionList;
|
|
Atom XdndActionDescription;
|
|
|
|
Atom Xdnd_NON_PROTOCOL_ATOM;
|
|
Atom version;
|
|
|
|
Atom pad2[16];
|
|
|
|
Window root_window;
|
|
|
|
#define XDND_DROP_STAGE_IDLE 0
|
|
#define XDND_DRAG_STAGE_DRAGGING 1
|
|
#define XDND_DRAG_STAGE_ENTERED 2
|
|
#define XDND_DROP_STAGE_CONVERTING 3
|
|
#define XDND_DROP_STAGE_ENTERED 4
|
|
int stage;
|
|
int dragging_version;
|
|
int internal_drag;
|
|
int want_position;
|
|
int ready_to_drop;
|
|
int will_accept;
|
|
XRectangle rectangle;
|
|
Window dropper_window, dragger_window;
|
|
Atom *dragger_typelist;
|
|
Atom desired_type;
|
|
Atom supported_action;
|
|
Time time;
|
|
/* drop position from last XdndPosition */
|
|
int x, y;
|
|
int pad3[16];
|
|
|
|
/* move euclidian pixels before considering this to be an actual drag */
|
|
float drag_threshold;
|
|
|
|
/* block for only this many seconds on not receiving a XdndFinished from target, default : 10 */
|
|
int time_out;
|
|
|
|
#define XDND_OPTION_NO_HYSTERESIS (1<<0)
|
|
int options;
|
|
|
|
/* user hooks */
|
|
void *user_hook1;
|
|
void *user_hook2;
|
|
void *user_hook3;
|
|
void *pad4[16];
|
|
};
|
|
|
|
void xdnd_init (DndClass * dnd, Display * display);
|
|
void xdnd_shut (DndClass *dnd);
|
|
void xdnd_set_dnd_aware (DndClass * dnd, Window window, Atom * typelist);
|
|
int xdnd_is_dnd_aware (DndClass * dnd, Window window, int *version, Atom * typelist);
|
|
void xdnd_set_type_list (DndClass * dnd, Window window, Atom * typelist);
|
|
void xdnd_set_actions (DndClass * dnd, Window window, Atom * actions, char **descriptions);
|
|
int xdnd_get_actions (DndClass * dnd, Window window, Atom ** actions, char ***descriptions);
|
|
int xdnd_choose_action_dialog (DndClass * dnd, Atom * actions, char **descriptions, Atom * result);
|
|
void xdnd_send_enter (DndClass * dnd, Window window, Window from, Atom * typelist);
|
|
void xdnd_send_position (DndClass * dnd, Window window, Window from, Atom action, int x, int y, unsigned long etime);
|
|
void xdnd_send_status (DndClass * dnd, Window window, Window from, int will_accept,
|
|
int want_position, int x, int y, int w, int h, Atom action);
|
|
void xdnd_send_leave (DndClass * dnd, Window window, Window from);
|
|
void xdnd_send_drop (DndClass * dnd, Window window, Window from, unsigned long etime);
|
|
void xdnd_send_finished (DndClass * dnd, Window window, Window from, int error);
|
|
int xdnd_convert_selection (DndClass * dnd, Window window, Window requester, Atom type);
|
|
void xdnd_selection_send (DndClass * dnd, XSelectionRequestEvent * request, unsigned char *data, int length);
|
|
int xdnd_get_selection (DndClass * dnd, Window from, Atom property, Window insert);
|
|
Atom xdnd_drag (DndClass * dnd, Window from, Atom action, Atom * typelist);
|
|
|
|
/* Returns 1 if event is handled, This must be placed in the widget libraries main event
|
|
loop and be called if the event type is ClientMessage or SelectionNotify */
|
|
int xdnd_handle_drop_events (DndClass * dnd, XEvent * xevent);
|
|
Atom xdnd_get_drop (Display * display, XEvent * xevent, Atom * typelist, Atom * actionlist,
|
|
unsigned char **data, int *length, Atom * type, int *x, int *y);
|
|
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|
|
|
|
#endif /* !_X_DND_H */
|
|
|
|
|