/*******************************************************************************
alloc_err()
******************************************************************************/
void alloc_err(char *s)
{
extern dyn_ptr_t Parent;
char msg[100];
sprintf(msg, "%s %s\n", s, OVERFLOW);
errmsg(msg);
tty_pr_string(SEESTACK);
if(read_yes())
dump_ancestors(Parent);
exit_term();
exit(1);
}
uint32_t khrn_platform_get_window_position(EGLNativeWindowType win)
{
Window w = (Window) win;
Window dummy;
XWindowAttributes attr;
Window look_for_me, root_dummy, root_dummy2, parent_dummy, *children;
int x, y;
unsigned int layer, i, nchildren;
//the assumption is that windows are at the 2nd level i.e. in the below
//root_dummy/attr.root -> look_for_me -> w
vcos_log_trace("Start khrn_platform_get_window_position");
XGetWindowAttributes(hacky_display, w, &attr);
vcos_log_trace("XGetWindowAttributes");
if (attr.map_state == IsViewable)
{
XTranslateCoordinates(hacky_display, w, attr.root, 0, 0, &x, &y, &dummy);
vcos_log_trace("XTranslateCoordinates");
XQueryTree(hacky_display, w, &root_dummy, &look_for_me, &children, &nchildren);
if (children) XFree(children);
XQueryTree(hacky_display, attr.root, &root_dummy2, &parent_dummy, &children, &nchildren);
vcos_log_trace("XQueryTree");
layer = ~0;
vcos_log_trace("Dumping hierarchy %d %d (%d)", (int)w, (int)look_for_me, (int)root_dummy);
dump_hierarchy(attr.root, w, look_for_me, 0);
if (children)
{
for (i = 0; i < nchildren; i++)
{
if (children[i] == look_for_me)
layer = i;
}
XFree(children);
}
vcos_log_trace("XFree");
if (layer == ~0)
{
vcos_log_error("EGL window isn't child of root", i);
//to try and find out where this window has gone, let us walk back up the heirarchy
dump_ancestors(w);
return ~0;
}
else
{
vcos_log_trace("End khrn_platform_get_window_position - visible");
return x | y << 12 | layer << 24;
}
}
else
{
vcos_log_trace("End khrn_platform_get_window_position - invisible");
return ~0; /* Window is invisible */
}
}