/* Terminality - a portable terminal handling library
 * Copyright (C) 1998-2002, Emil Mikulic.
 * This is LGPL - look at COPYING.LIB
 */

/* Project:     Terminality/GUI
 * File:	pbar.cpp
 * Author:      Michal Safranek
 * Description: Implements the progress bar
 */

#include <gui.h>

const char pbar_rcsid[] =
"$Id: pbar.cpp,v 1.6 2002/07/26 01:39:40 darkmoon Exp $";



progressBar::progressBar(int xx, int yy, int ww, int hh)
{
	x = xx; y = yy;
	w = ww; h = hh;
	bg = COLOR_PBAR_BG;
	none = COLOR_PBAR_NONE;
	low = COLOR_PBAR_LOW;
	mid = COLOR_PBAR_MID;
	hi = COLOR_PBAR_HI;
	perc = COLOR_PBAR_PERC;
	max = 100; cur = 0; adv = 1;
	show_perc = w > 3;
	alt_clr = false;
	visible = true;
	fixed_colors = false;
#ifndef __DJGPP__
	chr_none = BLOCK_1;
	chr_low = BLOCK_2;
	chr_mid = BLOCK_3;
	chr_hi = BLOCK_4;
#else
	chr_none = 176; chr_low = 177; chr_mid = 178; chr_hi = 219;
#endif
	low_mid = 34; mid_hi = 67;
}



progressBar::progressBar(int xx, int yy, int ww, int hh, color _b,
	color _n, color _l, color _m, color _h, color _p)
{
	x = xx; y = yy;
	w = ww; h = hh;
	bg = _b; low = _l; none = _n;
	mid = _m; hi = _h; perc = _p;
	max = 100; cur = 0; adv = 1;
	show_perc = w > 3;
	alt_clr = false;
	visible = true;
	fixed_colors = false;
#ifndef __DJGPP__
	chr_none = BLOCK_1;
	chr_low = BLOCK_2;
	chr_mid = BLOCK_3;
	chr_hi = BLOCK_4;
#else
	chr_none = 176; chr_low = 177; chr_mid = 178; chr_hi = 219;
#endif
	low_mid = 34; mid_hi = 67;
}



progressBar::~progressBar()
{
}



#define GET_PERCENT(a, b) ((int)((float) (100.0 * (float) a) / ((float) b)))



// Set color by percent
void progressBar::color_by_perc(int c, int m)
{
	color _b, _n, _l, _m, _h, _p;

	/* Set colors: */
	_b = bg == Default?COLOR_PBAR_BG:bg;
	_n = none == Default?COLOR_PBAR_NONE:none;
	_l = low == Default?COLOR_PBAR_LOW:low;
	_m = mid == Default?COLOR_PBAR_MID:mid;
	_h = hi == Default?COLOR_PBAR_HI:hi;
	_p = perc == Default?COLOR_PBAR_PERC:perc;

	if (GET_PERCENT(c, m) >= GET_PERCENT(cur, max))
		setcolor(_n, _b);
	else
		if ((alt_clr?GET_PERCENT(cur, max):GET_PERCENT(c, m)) >=
		low_mid)
			if ((alt_clr?GET_PERCENT(cur, max):GET_PERCENT(c, m)) >
			mid_hi)
				setcolor(_h, _b);
			else
				setcolor(_m, _b);
		else
			setcolor(_l, _b);
}



// Set char by percent
chtype *progressBar::char_by_perc(int c, int m)
{
	if (GET_PERCENT(c, m) >= GET_PERCENT(cur, max))
		return &chr_none;
	else
		if (GET_PERCENT(c, m) >= low_mid)
			if (GET_PERCENT(c, m) > mid_hi)
				return &chr_hi;
			else
				return &chr_mid;
		else
			return &chr_low;
}



// Drawing routine
void progressBar::draw(void)
{
	int i, j;
	chtype *elem = NULL;
	color _b, _p;
	
	if(!visible) return;

	/* Set colors: */
	_b = bg == Default?COLOR_PBAR_BG:bg;
	_p = perc == Default?COLOR_PBAR_PERC:perc;

	for(i = 0; i < w; i++) {
		for(j = 0; j < h; j++) {
			gotoxy(x + i, y + j);
			color_by_perc(i, w);
			elem = char_by_perc(i, w);
			writech(*elem);
		}
	}

	if (show_perc) {
		gotoxy(x + w, y + h/2);
		setcolor(_p, _b);
		printw("%3d%%", GET_PERCENT(cur, max));
	}
	update();
}



// Change color scheme
void progressBar::change_scheme(void)
{
	if (fixed_colors) return;
	bg = COLOR_PBAR_BG;
	none = COLOR_PBAR_NONE;
	low = COLOR_PBAR_LOW;
	mid = COLOR_PBAR_MID;
	hi = COLOR_PBAR_HI;
	perc = COLOR_PBAR_PERC;
}



// Advance progress
int progressBar::advance(void)
{
	if (cur == max) return 0;
	cur = cur + adv > max ? max : cur + adv;
	draw();
	return 1;
}


	
// Set units per advance
int progressBar::setadv(int units)
{
	if (units < 1 || units > max) return 0;
	adv = units;
	return 1;
}



// Set max units
int progressBar::setmax(int units)
{
	if (units < 1) return 0;
	max = units;
	if (adv > max) adv = max;
	return 1;
}



// Set current units
int progressBar::setcur(int units)
{
	if (units < 0 || units > max) return 0;
	cur = units;
	return 1;
}



int progressBar::setperc(int f, int s)
{
	if (f < 0 || f > 100 || s < f || s > 100) return 0;
	low_mid = f;
	mid_hi = s;
	return 1;
}