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#include "copyright.h"
/* $Header: /cvs/emacs/oldXMenu/Locate.c,v 1.1 1999/10/03 19:35:09 fx Exp $ */
/* Copyright Massachusetts Institute of Technology 1985 */
/*
* XMenu: MIT Project Athena, X Window system menu package
*
* XMenuLocate - Return data necessary to position and locate
* a menu on the screen.
*
* Author: Tony Della Fera, DEC
* January 11, 1985
*
*/
#include "XMenuInt.h"
int
XMenuLocate(display, menu, p_num, s_num, x_pos, y_pos, ul_x, ul_y, width, height)
register Display *display; /* Previously opened display. */
register XMenu *menu; /* Menu object being located. */
int p_num; /* Active pane number. */
int s_num; /* Active selection number. */
int x_pos; /* X coordinate of mouse active position. */
int y_pos; /* Y coordinate of mouse active position. */
int *ul_x; /* Returned upper left menu X coordinate. */
int *ul_y; /* Returned upper left menu Y coordinate. */
int *width; /* Returned menu width. */
int *height; /* Returned menu height. */
{
register XMPane *p_ptr; /* XMPane pointer. */
register XMSelect *s_ptr; /* XMSelect pointer. */
/*
* Are the position arguments positive?
*/
if ((x_pos <= 0) || (y_pos <= 0)) {
_XMErrorCode = XME_ARG_BOUNDS;
return(XM_FAILURE);
}
/*
* Find the right pane.
*/
p_ptr = _XMGetPanePtr(menu, p_num);
if (p_ptr == NULL) return(XM_FAILURE);
/*
* Find the right selection.
*/
s_ptr = _XMGetSelectionPtr(p_ptr, s_num);
/*
* Check to see that the menu's dependencies have been
* recomputed and are up to date. If not, do it now.
*/
if (menu->recompute) XMenuRecompute(display, menu);
/*
* Compute the new menu origin such that the active point lies
* in the center of the desired active pane and selection.
* This sets the values of ul_x and ul_y.
*/
_XMTransToOrigin(display, menu, p_ptr, s_ptr, x_pos, y_pos, ul_x, ul_y);
/*
* Set remaining return argument values.
*/
*width = menu->width;
*height = menu->height;
/*
* Return successfully.
*/
_XMErrorCode = XME_NO_ERROR;
return(XM_SUCCESS);
}
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