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