descent/UI/INPUTBOX.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/inputbox.c $
 * $Revision: 1.6 $
 * $Author: john $
 * $Date: 1994/11/18 23:07:30 $
 *
 * Routines for doing inputbox gadgets.
 *
 * $Log: inputbox.c $
 * Revision 1.6  1994/11/18  23:07:30  john
 * Changed a bunch of shorts to ints.
 * 
 * Revision 1.5  1994/07/22  17:02:17  john
 * fixed bug with inputbox not sucking up its keypresses.
 * 
 * Revision 1.4  1993/12/07  12:30:55  john
 * new version.
 * 
 * Revision 1.3  1993/10/26  13:45:59  john
 * *** empty log message ***
 * 
 * Revision 1.2  1993/10/05  17:30:50  john
 * *** empty log message ***
 * 
 * Revision 1.1  1993/09/20  10:35:12  john
 * Initial revision
 * 
 *
 */

#pragma off (unreferenced)
static char rcsid[] = "$Id: inputbox.c 1.6 1994/11/18 23:07:30 john Exp $";
#pragma on (unreferenced)

#include <stdlib.h>
#include <string.h>

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

// insert character c into string s at position p.
void strcins(char *s, int p, char c)
{
	int n;
	for (n=strlen(s)-p; n>=0; n-- )
		*(s+p+n+1) = *(s+p+n);   // Move everything over
	*(s+p) = c;         // then insert the character
}

// delete n character from string s starting at position p

void strndel(char *s, int p, int n)
{
	for (; (*(s+p) = *(s+p+n)) != '\0'; s++ )
		*(s+p+n) = '\0';    // Delete and zero fill
}

void ui_draw_inputbox( UI_GADGET_INPUTBOX * inputbox )
{
	int w, h, aw;

	if ((inputbox->status==1) || (inputbox->position != inputbox->oldposition))
	{
		ui_mouse_hide();
		gr_set_current_canvas( inputbox->canvas );

		if (CurWindow->keyboard_focus_gadget == (UI_GADGET *)inputbox)
		{
			if (inputbox->first_time)
				gr_set_fontcolor( CBLACK, CRED );
			else
				gr_set_fontcolor( CRED, CBLACK );
		}
		else
			gr_set_fontcolor( CWHITE, CBLACK );

		inputbox->status = 0;

		gr_string( 2, 2, inputbox->text );
		gr_get_string_size(inputbox->text, &w, &h, &aw  );

		gr_setcolor( CBLACK );
		gr_rect( 2+w, 0, inputbox->width-1, inputbox->height-1 );

		if (CurWindow->keyboard_focus_gadget == (UI_GADGET *)inputbox  && !inputbox->first_time )
		{
			gr_setcolor(CRED);
			Vline( 2,inputbox->height-3, 2+w+1 );
			Vline( 2,inputbox->height-3, 2+w+2 );
		}

		ui_mouse_show();
	}
}

UI_GADGET_INPUTBOX * ui_add_gadget_inputbox( UI_WINDOW * wnd, short x, short y, short length, short slength, char * text )
{
	int h, w, aw, f;
	UI_GADGET_INPUTBOX * inputbox;

	gr_get_string_size( NULL, &w, &h, &aw );

	inputbox = (UI_GADGET_INPUTBOX *)ui_gadget_add( wnd, 6, x, y, x+aw*slength-1, y+h-1+4 );

	f = 0;

	inputbox->text = malloc( length + 1);
	strncpy( inputbox->text, text, length );
	inputbox->position = strlen(inputbox->text);
	inputbox->oldposition = inputbox->position;
	inputbox->width = aw*slength;
	inputbox->height = h+4;
	inputbox->length = length;
	inputbox->slength = slength;
	inputbox->pressed = 0;
	inputbox->first_time = 1;

	gr_set_current_canvas( inputbox->canvas );
	gr_setcolor( CBLACK );
	gr_rect( 0, 0, inputbox->width-1, inputbox->height-1 );

	return inputbox;

}


void ui_inputbox_do( UI_GADGET_INPUTBOX * inputbox, int keypress )
{
	char ascii;
	inputbox->oldposition = inputbox->position;

	inputbox->pressed=0;

	if (CurWindow->keyboard_focus_gadget==(UI_GADGET *)inputbox)
	{
		switch( keypress )
		{
		case 0:
			break;
		case (KEY_LEFT):
		case (KEY_BACKSP):
			if (inputbox->position > 0)
				inputbox->position--;
			inputbox->text[inputbox->position] = 0;
			inputbox->status = 1;
			if (inputbox->first_time) inputbox->first_time = 0;
			break;
		case (KEY_ENTER):
			inputbox->pressed=1;
			inputbox->status = 1;
			if (inputbox->first_time) inputbox->first_time = 0;
			break;
		default:
			ascii = key_to_ascii(keypress);
			if ((ascii < 255 ) && (inputbox->position < inputbox->length-2))
			{
				if (inputbox->first_time) {
					inputbox->first_time = 0;
					inputbox->position = 0;
				}
				inputbox->text[inputbox->position++] = ascii;
				inputbox->text[inputbox->position] = 0;
			}
			inputbox->status = 1;
			break;
		}
	} else {
		inputbox->first_time = 1;
	}

	last_keypress=0;
	
	ui_draw_inputbox( inputbox );

}