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- #include "copyright.h"
-
- /* $Header: Locate.c,v 1.5 88/02/02 19:09:02 jim 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);
- }
-