Status
XQueryTree(Display * display, Window w, Window * root_return,
Window * parent_return,
Window ** children_return, unsigned int *nchildren_return)
{
*root_return = GR_ROOT_WINDOW_ID;
GrQueryTree(w, (GR_WINDOW_ID *) parent_return,
(GR_WINDOW_ID **) children_return, (int*) nchildren_return);
return 1;
}
int
XMapSubwindows(Display *dpy, Window w)
{
GR_WINDOW_ID parent;
GR_WINDOW_ID *child, *cp;
int i, nchild;
GrQueryTree(w, &parent, &child, &nchild);
cp = child;
for (i=0; i<nchild; ++i)
GrMapWindow(*cp++);
free(child);
return 1;
}
static void
GrQueryTreeWrapper(void *r)
{
nxQueryTreeReq *req = r;
GR_WINDOW_ID parentid;
GR_WINDOW_ID * children;
GR_COUNT nchildren;
GrQueryTree(req->windowid, &parentid, &children, &nchildren);
GsWriteType(current_fd, GrNumQueryTree);
GsWrite(current_fd, &parentid, sizeof(parentid));
GsWrite(current_fd, &nchildren, sizeof(nchildren));
if (nchildren) {
GsWrite(current_fd, children, nchildren * sizeof(GR_WINDOW_ID));
free(children);
}
}
/*
Calculate Visible region of root window.
*/
int
CalcRootVisible(void)
{
GR_REGION_ID covered;
GR_REGION_ID visible;
GR_WINDOW_ID parent;
GR_WINDOW_ID *children;
GR_COUNT nChildren;
GR_COUNT wx;
GR_RECT rect;
GR_WINDOW_INFO info;
/*
Get children of root.
*/
GrQueryTree(GR_ROOT_WINDOW_ID, &parent, &children, &nChildren);
/*
For each mapped child, add the window rectangle to the covered
region.
*/
covered = GrNewRegion();
for (wx=0; wx<nChildren; wx++) {
GrGetWindowInfo(children[wx], &info);
if (info.unmapcount == 0) {
rect.x = info.x;
rect.y = info.y;
rect.width = info.width;
rect.height = info.height;
GrUnionRectWithRegion(covered, &rect);
}
}
free(children);
/*
Subtract the covered region from the root window region.
*/
visible = GrNewRegion();
rect.x = 0;
rect.y = 0;
rect.width = display_width;
rect.height = display_height;
GrUnionRectWithRegion(visible, &rect);
GrSubtractRegion(visible, visible, covered);
GrDestroyRegion(covered);
/*
Save visible region globally.
*/
if (rootVisible)
GrDestroyRegion(rootVisible);
rootVisible = visible;
/*
Mark all roaches visible.
*/
for (wx=0; wx<curRoaches; wx++)
roaches[wx].hidden = 0;
return 0;
}
