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- updated the XDND code in WINGs to work with GDK based applications.

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WINGs based applications should now work with both KDE and GNOME
  applications (Sylvain Reynal <sreynal@nerim.net>)
- better check for the XDND protocol version when interoperating with other
  applications. As it seems xdnd version 3 (which WINGs supports) and newer
  are not backward compatible with xdnd version 1 and 2. This is why WINGs
  applications cannot interoperate with GNUstep applications (which uses
  xdnd version 2). Xdnd version 4 and 5 are backwards compatible with
  version 3 though. (Sylvain Reynal <sreynal@nerim.net>)
This commit is contained in:
dan
2006-01-22 20:33:19 +00:00
parent f683b99405
commit 085e9d6254
6 changed files with 329 additions and 256 deletions
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28
WINGs/dragcommon.c
View File

@@ -2,11 +2,9 @@
#include "WINGsP.h"
#define VERSION_INFO(dragInfo) dragInfo->protocolVersion
#define XDND_SOURCE_VERSION(dragInfo) dragInfo->protocolVersion
#define XDND_DEST_INFO(dragInfo) dragInfo->destInfo
#define XDND_DEST_VIEW(dragInfo) dragInfo->destInfo->destView
#define XDND_DEST_VIEW_STORED(dragInfo) ((dragInfo->destInfo) != NULL)\
&& ((dragInfo->destInfo->destView) != NULL)
static Bool _WindowExists;
@@ -151,6 +149,13 @@ W_SendDnDClientMessage(Display *dpy, Window win, Atom message,
{
XEvent ev;
#ifdef XDND_DEBUG
char* msgName = XGetAtomName(dpy, message);
printf("sending message %s ... ", msgName);
XFree(msgName);
#endif
if (! windowExists(dpy, win)) {
wwarning("xdnd message target %d does no longer exist.", win);
return False; /* message not sent */
@@ -170,6 +175,9 @@ W_SendDnDClientMessage(Display *dpy, Window win, Atom message,
XSendEvent(dpy, win, False, 0, &ev);
XFlush(dpy);
#ifdef XDND_DEBUG
printf("sent\n");
#endif
return True; /* message sent */
}
@@ -178,7 +186,9 @@ static void
handleLeaveMessage(WMDraggingInfo *info)
{
if (XDND_DEST_INFO(info) != NULL) {
if (XDND_DEST_VIEW(info) != NULL) {
/* XDND_DEST_VIEW is never NULL (it's the xdnd aware view) */
wassertr(XDND_DEST_VIEW(info) != NULL);
if (XDND_DEST_VIEW(info)->dragDestinationProcs != NULL) {
XDND_DEST_VIEW(info)->dragDestinationProcs->concludeDragOperation(
XDND_DEST_VIEW(info));
}
@@ -216,11 +226,15 @@ W_HandleDNDClientMessage(WMView *toplevel, XClientMessageEvent *event)
/* Messages from source to destination */
if (messageType == scr->xdndEnterAtom) {
Bool positionSent = (XDND_DEST_INFO(info) != NULL);
W_DragDestinationStopTimer();
W_DragDestinationStoreEnterMsgInfo(info, toplevel, event);
if (VERSION_INFO(info) <= XDND_VERSION) {
if (XDND_DEST_VIEW_STORED(info)) {
/* Xdnd version 3 and up are not compatible with version 1 or 2 */
if (XDND_SOURCE_VERSION(info) > 2) {
if (positionSent) {
/* xdndPosition previously received on xdnd aware view */
W_DragDestinationStateHandler(info, event);
return;
@@ -230,7 +244,7 @@ W_HandleDNDClientMessage(WMView *toplevel, XClientMessageEvent *event)
}
} else {
wwarning("received dnd enter msg with unsupported version %i",
VERSION_INFO(info));
XDND_SOURCE_VERSION(info));
W_DragDestinationCancelDropOnEnter(toplevel, info);
return;
}