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tag: mh-e-8.4
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/* Copyright Massachusetts Institute of Technology 1985 */
#include "copyright.h"
/*
* 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(register Display *display, register XMenu *menu, int p_num, int s_num, int x_pos, int y_pos, int *ul_x, int *ul_y, int *width, int *height)
/* Previously opened display. */
/* Menu object being located. */
/* Active pane number. */
/* Active selection number. */
/* X coordinate of mouse active position. */
/* Y coordinate of mouse active position. */
/* Returned upper left menu X coordinate. */
/* Returned upper left menu Y coordinate. */
/* Returned menu width. */
/* 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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