4.3BSD - /usr/src/new/X/XMenu/XMenuLocate.c

   1: #include <X/mit-copyright.h>
   2: 
   3: /* $Header: XMenuLocate.c,v 10.4 86/02/01 16:15:24 tony Rel $ */
   4: /* Copyright    Massachusetts Institute of Technology    1985	*/
   5: 
   6: /*
   7:  * XMenu:	MIT Project Athena, X Window system menu package
   8:  *
   9:  *	XMenuLocate - Return data necessary to position and locate
  10:  *		      a menu on the screen.
  11:  *
  12:  *	Author:		Tony Della Fera, DEC
  13:  *			January 11, 1985
  14:  *
  15:  */
  16: 
  17: #include "XMenuInternal.h"
  18: 
  19: int
  20: XMenuLocate(menu, p_num, s_num, x_pos, y_pos, ul_x, ul_y, width, height)
  21:     register XMenu *menu;   /* Menu object being located. */
  22:     int p_num;          /* Active pane number. */
  23:     int s_num;          /* Active selection number. */
  24:     int x_pos;          /* X coordinate of mouse active position. */
  25:     int y_pos;          /* Y coordinate of mouse active position. */
  26:     int *ul_x;          /* Returned upper left menu X coordinate. */
  27:     int *ul_y;          /* Returned upper left menu Y coordinate. */
  28:     int *width;         /* Returned menu width. */
  29:     int *height;        /* Returned menu height. */
  30: {
  31:     register int i;     /* Loop counter. */
  32:     register XMPane *p_ptr; /* XMPane pointer. */
  33:     register XMSelect *s_ptr;   /* XMSelect pointer. */
  34: 
  35:     /*
  36:      * Are the position arguments positive?
  37:      */
  38:     if ((x_pos <= 0) || (y_pos <= 0)) {
  39:     _XMErrorCode = XME_ARG_BOUNDS;
  40:     return(XM_FAILURE);
  41:     }
  42: 
  43:     /*
  44:      * Find the right pane.
  45:      */
  46:     p_ptr = _XMGetPanePtr(menu, p_num);
  47:     if (p_ptr == NULL) return(XM_FAILURE);
  48: 
  49:     /*
  50:      * Find the right selection.
  51:      */
  52:     s_ptr = _XMGetSelectionPtr(p_ptr, s_num);
  53:     if (s_ptr == NULL) return(XM_FAILURE);
  54: 
  55:     /*
  56:      * Check to see that the menu's dependencies have been
  57:      * recomputed and are up to date.  If not, do it now.
  58:      */
  59:     if (menu->recompute) XMenuRecompute(menu);
  60: 
  61:     /*
  62:      * Compute the new menu origin such that the active point lies
  63:      * in the center of the desired active pane and selection.
  64:      * This sets the values of ul_x and ul_y.
  65:      */
  66:     _XMTransToOrigin(menu, p_ptr, s_ptr, x_pos, y_pos, ul_x, ul_y);
  67: 
  68:     /*
  69:      * Set remaining return argument values.
  70:      */
  71:     *width = menu->width;
  72:     *height = menu->height;
  73: 
  74:     /*
  75:      * Return successfully.
  76:      */
  77:     _XMErrorCode = XME_NO_ERROR;
  78:     return(XM_SUCCESS);
  79: }

Defined functions