descent/UI/MENU.C

/*
THE COMPUTER CODE CONTAINED HEREIN IS THE SOLE PROPERTY OF PARALLAX
SOFTWARE CORPORATION ("PARALLAX").  PARALLAX, IN DISTRIBUTING THE CODE TO
END-USERS, AND SUBJECT TO ALL OF THE TERMS AND CONDITIONS HEREIN, GRANTS A
ROYALTY-FREE, PERPETUAL LICENSE TO SUCH END-USERS FOR USE BY SUCH END-USERS
IN USING, DISPLAYING,  AND CREATING DERIVATIVE WORKS THEREOF, SO LONG AS
SUCH USE, DISPLAY OR CREATION IS FOR NON-COMMERCIAL, ROYALTY OR REVENUE
FREE PURPOSES.  IN NO EVENT SHALL THE END-USER USE THE COMPUTER CODE
CONTAINED HEREIN FOR REVENUE-BEARING PURPOSES.  THE END-USER UNDERSTANDS
AND AGREES TO THE TERMS HEREIN AND ACCEPTS THE SAME BY USE OF THIS FILE.  
COPYRIGHT 1993-1998 PARALLAX SOFTWARE CORPORATION.  ALL RIGHTS RESERVED.
*/
/*
 * $Source: f:/miner/source/ui/rcs/menu.c $
 * $Revision: 1.5 $
 * $Author: john $
 * $Date: 1994/11/18 23:07:19 $
 *
 * Routines for doing popup menus.
 *
 * $Log: menu.c $
 * Revision 1.5  1994/11/18  23:07:19  john
 * Changed a bunch of shorts to ints.
 * 
 * Revision 1.4  1993/12/07  12:30:24  john
 * new version.
 * 
 * Revision 1.3  1993/10/26  13:46:18  john
 * *** empty log message ***
 * 
 * Revision 1.2  1993/10/05  17:31:25  john
 * *** empty log message ***
 * 
 * Revision 1.1  1993/09/20  10:35:16  john
 * Initial revision
 * 
 *
 */

#pragma off (unreferenced)
static char rcsid[] = "$Id: menu.c 1.5 1994/11/18 23:07:19 john Exp $";
#pragma on (unreferenced)
#include <stdlib.h>

#include "mem.h"
#include "fix.h"
#include "types.h"
#include "gr.h"
#include "ui.h"


#define MENU_BORDER 2
#define MENU_VERT_SPACING 2

int MenuX( int x, int y, int NumButtons, char * text[] )
{
	UI_WINDOW * wnd;
	UI_GADGET_BUTTON ** ButtonG;
	char ** Button;

	int button_width, button_height, width, height;

	int i;
	int w, h;

	int choice;

	ButtonG = (UI_GADGET_BUTTON **)malloc( sizeof(UI_GADGET_BUTTON *)*NumButtons );
	Button = (char **)malloc( sizeof(char *)*NumButtons );

	button_width = button_height = 0;

	for (i=0; i<NumButtons; i++ )
	{
		Button[i] = text[i];

		ui_get_button_size( Button[i], &width, &height );

		if ( width > button_width ) button_width = width;
		if ( height > button_height ) button_height = height;
	}

	width = button_width + 2*(MENU_BORDER+3);

	height = (button_height*NumButtons) + (MENU_VERT_SPACING*(NumButtons-1)) ;
	height += (MENU_BORDER+3) * 2;

	w = grd_curscreen->sc_w;
	h = grd_curscreen->sc_h;

	if ( x == -1 ) x = Mouse.x - width/2;
	if ( y == -1 ) y = Mouse.y;

	if (x < 0 ) {
		x = 0;
	}

	if ( (x+width-1) >= w ) {
		x = w - width;
	}

	if (y < 0 ) {
		y = 0;
	}

	if ( (y+height-1) >= h ) {
		y = h - height;
	}

	wnd = ui_open_window( x, y, width, height, WIN_FILLED | WIN_SAVE_BG );

	x = MENU_BORDER+3;
	y = MENU_BORDER+3;

	for (i=0; i<NumButtons; i++ )
	{
		ButtonG[i] = ui_add_gadget_button( wnd, x, y, button_width, button_height, Button[i], NULL );
		y += button_height+MENU_VERT_SPACING;
	}

	choice = 0;

	while(choice==0)
	{
		ui_mega_process();
		ui_window_do_gadgets(wnd);

		for (i=0; i<NumButtons; i++ )
		{
			if (ButtonG[i]->pressed)   {
				choice = i+1;
				break;
			}
		}

		if ( (choice==0) && B1_JUST_RELEASED )  {
			choice = -1;
			break;
		}

	}

	ui_close_window(wnd);
	free(Button);
	free(ButtonG);

	return choice;

}