void WMScreenAbortDrag(W_Screen *screen) {
if (!screen || !screen->dragInfo.sourceInfo) return;
W_DragSourceInfo *source = screen->dragInfo.sourceInfo;
W_DragSourceStopTimer();
// inform the other client
if (source->destinationWindow)
W_SendDnDClientMessage(screen->display, source->destinationWindow,
screen->xdndLeaveAtom, WMViewXID(source->sourceView), 0, 0, 0, 0);
WMDeleteSelectionHandler(source->sourceView, screen->xdndSelectionAtom, CurrentTime);
wfree(source->selectionProcs);
if (source->sourceView->dragSourceProcs->endedDrag)
source->sourceView->dragSourceProcs->endedDrag(source->sourceView, &source->imageLocation, False);
if (source->icon)
XDestroyWindow(screen->display, source->icon);
if (source->dragCursor != None) {
XDefineCursor(screen->display, screen->rootWin, screen->defaultCursor);
XFreeCursor(screen->display, source->dragCursor);
}
wfree(source);
screen->dragInfo.sourceInfo = NULL;
}
static void registerDescriptionList(WMScreen * scr, WMView * view, WMArray * operationArray)
{
char *text, *textListItem, *textList;
int count = WMGetArrayItemCount(operationArray);
int i;
int size = 0;
/* size of XA_STRING info */
for (i = 0; i < count; i++) {
size += strlen(WMGetDragOperationItemText(WMGetFromArray(operationArray, i))) + 1 /* NULL */;
}
/* create text list */
textList = wmalloc(size);
textListItem = textList;
for (i = 0; i < count; i++) {
text = WMGetDragOperationItemText(WMGetFromArray(operationArray, i));
wstrlcpy(textListItem, text, size);
/* to next text offset */
textListItem = &(textListItem[strlen(textListItem) + 1]);
}
XChangeProperty(scr->display,
WMViewXID(view),
scr->xdndActionDescriptionAtom,
XA_STRING,
XDND_ACTION_DESCRIPTION_FORMAT, PropModeReplace, (unsigned char *)textList, size);
}
/* send a DnD message to the destination window */
static Bool
sendDnDClientMessage(WMDraggingInfo * info, Atom message,
unsigned long data1, unsigned long data2, unsigned long data3, unsigned long data4)
{
Display *dpy = sourceScreen(info)->display;
Window srcWin = WMViewXID(XDND_SOURCE_VIEW(info));
Window destWin = XDND_DEST_WIN(info);
if (!W_SendDnDClientMessage(dpy, destWin, message, srcWin, data1, data2, data3, data4)) {
/* drop failed */
recolorCursor(info, False);
endDragImage(info, True);
endDragProcess(info, False);
return False;
}
return True;
}
static void registerOperationList(WMScreen * scr, WMView * view, WMArray * operationArray)
{
Atom *actionList;
WMDragOperationType operation;
int count = WMGetArrayItemCount(operationArray);
int i;
actionList = wmalloc(sizeof(Atom) * count);
for (i = 0; i < count; i++) {
operation = WMGetDragOperationItemType(WMGetFromArray(operationArray, i));
actionList[i] = W_OperationToAction(scr, operation);
}
XChangeProperty(scr->display,
WMViewXID(view),
scr->xdndActionListAtom,
XA_ATOM, XDND_PROPERTY_FORMAT, PropModeReplace, (unsigned char *)actionList, count);
}
static void endDragImage(WMDraggingInfo * info, Bool slideBack)
{
WMView *view = XDND_SOURCE_VIEW(info);
Display *dpy = W_VIEW_SCREEN(view)->display;
if (slideBack) {
WMPoint toLocation;
Window foo;
XTranslateCoordinates(W_VIEW_SCREEN(view)->display,
WMViewXID(view), W_VIEW_SCREEN(view)->rootWin,
0, 0, &(toLocation.x), &(toLocation.y), &foo);
slideWindow(dpy, XDND_DRAG_ICON(info),
XDND_DRAG_ICON_POS(info).x, XDND_DRAG_ICON_POS(info).y, toLocation.x, toLocation.y);
}
XDestroyWindow(dpy, XDND_DRAG_ICON(info));
}
static void registerDropTypes(WMScreen * scr, WMView * view, WMDraggingInfo * info)
{
Atom *typeList;
int i, count;
typeList = getTypeAtomList(scr, view, &count);
/* store the first 3 types */
for (i = 0; i < 3 && i < count; i++)
XDND_3_TYPES(info)[i] = typeList[i];
for (; i < 3; i++)
XDND_3_TYPES(info)[i] = None;
/* store the entire type list */
XChangeProperty(scr->display,
WMViewXID(view),
scr->xdndTypeListAtom,
XA_ATOM, XDND_PROPERTY_FORMAT, PropModeReplace, (unsigned char *)typeList, count);
}
static void initDragImagePos(WMView * view, WMDraggingInfo * info, XEvent * event)
{
WMSize iconSize = WMGetPixmapSize(view->dragImage);
WMSize viewSize = WMGetViewSize(view);
WMPoint viewPos;
Window foo;
XTranslateCoordinates(W_VIEW_SCREEN(view)->display,
WMViewXID(view), W_VIEW_SCREEN(view)->rootWin,
0, 0, &(viewPos.x), &(viewPos.y), &foo);
/* set icon pos */
XDND_DRAG_ICON_POS(info).x =
getInitialDragImageCoord(viewPos.x, event->xmotion.x_root, viewSize.width, iconSize.width);
XDND_DRAG_ICON_POS(info).y =
getInitialDragImageCoord(viewPos.y, event->xmotion.y_root, viewSize.height, iconSize.height);
/* set mouse offset relative to icon */
XDND_MOUSE_OFFSET(info).x = event->xmotion.x_root - XDND_DRAG_ICON_POS(info).x;
XDND_MOUSE_OFFSET(info).y = event->xmotion.y_root - XDND_DRAG_ICON_POS(info).y;
}
