mirror of
https://github.com/gryf/wmaker.git
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Added forgotten dragcommon.c to the cvs tree
This commit is contained in:
dan
273
WINGs/dragcommon.c
Normal file
273
WINGs/dragcommon.c
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@@ -0,0 +1,273 @@
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/* #include <X11/Xatom.h> */
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#include "WINGsP.h"
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#define VERSION_INFO(dragInfo) dragInfo->protocolVersion
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#define XDND_DEST_INFO(dragInfo) dragInfo->destInfo
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#define XDND_DEST_VIEW(dragInfo) dragInfo->destInfo->destView
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#define XDND_DEST_VIEW_STORED(dragInfo) ((dragInfo->destInfo) != NULL)\
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&& ((dragInfo->destInfo->destView) != NULL)
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static Bool _WindowExists;
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Atom
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W_OperationToAction(WMScreen *scr, WMDragOperationType operation)
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{
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switch (operation) {
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case WDOperationNone:
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return None;
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case WDOperationCopy:
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return scr->xdndActionCopy;
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case WDOperationMove:
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return scr->xdndActionMove;
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case WDOperationLink:
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return scr->xdndActionLink;
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case WDOperationAsk:
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return scr->xdndActionAsk;
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case WDOperationPrivate:
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return scr->xdndActionPrivate;
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default:
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return None;
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}
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}
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WMDragOperationType
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W_ActionToOperation(WMScreen *scr, Atom action)
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{
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if (action == scr->xdndActionCopy) {
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return WDOperationCopy;
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} else if (action == scr->xdndActionMove) {
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return WDOperationMove;
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} else if (action == scr->xdndActionLink) {
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return WDOperationLink;
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} else if (action == scr->xdndActionAsk) {
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return WDOperationAsk;
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} else if (action == scr->xdndActionPrivate) {
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return WDOperationPrivate;
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} else if (action == None) {
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return WDOperationNone;
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} else {
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char *tmp = XGetAtomName(scr->display, action);
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wwarning("unknown XDND action %s ", tmp);
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XFree(tmp);
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return WDOperationCopy;
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}
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}
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static void
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freeDragOperationItem(void* item)
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{
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wfree(item);
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}
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WMArray*
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WMCreateDragOperationArray(int initialSize)
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{
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return WMCreateArrayWithDestructor(initialSize, freeDragOperationItem);
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}
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WMDragOperationItem*
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WMCreateDragOperationItem(WMDragOperationType type, char* text)
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{
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W_DragOperationItem *result = wmalloc(sizeof(W_DragOperationItem));
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result->type = type;
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result->text = text;
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return (WMDragOperationItem*) result;
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}
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WMDragOperationType
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WMGetDragOperationItemType(WMDragOperationItem* item)
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{
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return ((W_DragOperationItem*)item)->type;
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}
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char*
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WMGetDragOperationItemText(WMDragOperationItem* item)
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{
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return ((W_DragOperationItem*)item)->text;
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}
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static int
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handleNoWindowXError(Display *dpy, XErrorEvent *errEvt)
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{
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if (errEvt->error_code == BadWindow
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|| errEvt->error_code == BadDrawable) {
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_WindowExists = False;
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return Success;
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}
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return errEvt->error_code;
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}
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static Bool
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windowExists(Display *dpy, Window win)
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{
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void* previousErrorHandler;
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XWindowAttributes attr;
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XSynchronize(dpy, True);
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previousErrorHandler = XSetErrorHandler(handleNoWindowXError);
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_WindowExists = True;
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/* can generate BadDrawable or BadWindow */
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XGetWindowAttributes(dpy, win, &attr);
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XSetErrorHandler(previousErrorHandler);
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XSynchronize(dpy, False);
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return _WindowExists;
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}
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Bool
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W_SendDnDClientMessage(Display *dpy, Window win, Atom message,
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unsigned long data0,
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unsigned long data1,
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unsigned long data2,
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unsigned long data3,
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unsigned long data4)
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{
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XEvent ev;
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if (! windowExists(dpy, win)) {
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wwarning("xdnd message target %d does no longer exist.", win);
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return False; /* message not sent */
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}
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ev.type = ClientMessage;
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ev.xclient.message_type = message;
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ev.xclient.format = 32;
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ev.xclient.window = win;
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ev.xclient.data.l[0] = data0;
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ev.xclient.data.l[1] = data1;
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ev.xclient.data.l[2] = data2;
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ev.xclient.data.l[3] = data3;
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ev.xclient.data.l[4] = data4;
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XSendEvent(dpy, win, False, 0, &ev);
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XFlush(dpy);
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return True; /* message sent */
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}
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static void
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handleLeaveMessage(WMDraggingInfo *info)
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{
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if (XDND_DEST_INFO(info) != NULL) {
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if (XDND_DEST_VIEW(info) != NULL) {
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XDND_DEST_VIEW(info)->dragDestinationProcs->concludeDragOperation(
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XDND_DEST_VIEW(info));
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}
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W_DragDestinationInfoClear(info);
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}
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}
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void
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W_HandleDNDClientMessage(WMView *toplevel, XClientMessageEvent *event)
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{
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WMScreen *scr = W_VIEW_SCREEN(toplevel);
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WMDraggingInfo *info = &scr->dragInfo;
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Atom messageType = event->message_type;
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char* msgTypeName = XGetAtomName(scr->display, messageType);
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#ifdef XDND_DEBUG
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if (msgTypeName != NULL)
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printf("event type = %s\n", msgTypeName);
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else
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printf("pb with event type !\n");
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#endif
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/* Messages from destination to source */
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if (messageType == scr->xdndStatusAtom
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|| messageType == scr->xdndFinishedAtom) {
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W_DragSourceStopTimer();
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W_DragSourceStateHandler(info, event);
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return;
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}
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/* Messages from source to destination */
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if (messageType == scr->xdndEnterAtom) {
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W_DragDestinationStopTimer();
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W_DragDestinationStoreEnterMsgInfo(info, toplevel, event);
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if (VERSION_INFO(info) <= XDND_VERSION) {
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if (XDND_DEST_VIEW_STORED(info)) {
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/* xdndPosition previously received on xdnd aware view */
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W_DragDestinationStateHandler(info, event);
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return;
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} else {
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W_DragDestinationStartTimer(info);
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return;
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}
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} else {
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wwarning("received dnd enter msg with unsupported version %i",
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VERSION_INFO(info));
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W_DragDestinationCancelDropOnEnter(toplevel, info);
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return;
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}
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}
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if (messageType == scr->xdndPositionAtom) {
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W_DragDestinationStopTimer();
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W_DragDestinationStorePositionMsgInfo(info, toplevel, event);
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W_DragDestinationStateHandler(info, event);
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return;
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}
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if (messageType == scr->xdndSelectionAtom
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|| messageType == scr->xdndDropAtom) {
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W_DragDestinationStopTimer();
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W_DragDestinationStateHandler(info, event);
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return;
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}
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if (messageType == scr->xdndLeaveAtom) {
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/* conclude drop operation, and clear dragging info */
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W_DragDestinationStopTimer();
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handleLeaveMessage(info);
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}
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}
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/* called in destroyView (wview.c) */
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void
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W_FreeViewXdndPart(WMView *view)
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{
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WMUnregisterViewDraggedTypes(view);
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if (view->dragSourceProcs)
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wfree(view->dragSourceProcs);
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if (view->dragDestinationProcs)
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wfree(view->dragDestinationProcs);
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if (view->dragImage)
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WMReleasePixmap(view->dragImage);
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}
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