cava/output/terminal_ncurses.c

#include <curses.h>
#include <locale.h>
#include <wchar.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>

struct cols {
	int col;
	int R;
	int G;
	int B;
};

#define DEFAULTCOL 6
#define DEFAULTBGCOL -1

struct cols parse_color(char *col) {
	struct cols ret;

	if (col[0] == '#') {
		if (can_change_color() != TRUE) {
			cleanup_terminal_ncurses();
			fprintf(stderr,
				"Your terminal can not change color definitions, please use one of the predefined colors.\n");
			exit(EXIT_FAILURE);
		}

		// Set to -2 to indicate color_redefinition
		ret.col = -2;
		++col;
		sscanf(col, "%02x%02x%02x", &ret.R, &ret.G, &ret.B);
		return ret;
	} else {

	//using predefined colors
	ret.col = 0;

	return ret;
	}
}

int init_terminal_ncurses(char *color, char *bcolor, int predefcol, int predefbgcol) {
	struct cols col, bgcol;
	initscr();
	curs_set(0);
	timeout(0);
	noecho();
	start_color();
	use_default_colors();

	double magic = 1000 / 255.0;
	int colp = 0, bgcolp = 0;

	col = parse_color(color);
	bgcol = parse_color(bcolor);
	if (col.col == -2) {
		init_color(1, (int)(col.R * magic), (int)(col.G * magic), (int)(col.B * magic));
	}
	if (bgcol.col == -2) {
		init_color(2, (int)(bgcol.R * magic), (int)(bgcol.G * magic), (int)(bgcol.B * magic));
	}

	switch (col.col) {
		case -2:
			colp = 1;
			break;
		case -1:
			colp = DEFAULTCOL;
			break;
		default:
			colp = predefcol;
	}

	switch (bgcol.col) {
		case -2:
			bgcolp = 2;
			break;
		case -1:
			bgcolp = DEFAULTBGCOL;
			break;
		default:
			bgcolp = predefbgcol;
	}

	init_pair(1, colp, bgcolp);
	if (bgcolp != -1)
		bkgd(COLOR_PAIR(1));
	attron(COLOR_PAIR(1));
//	attron(A_BOLD);
	return 0;
}


void get_terminal_dim_ncurses(int *w, int *h) {

	getmaxyx(stdscr,*h,*w);
	clear(); //clearing in case of resieze
}


int draw_terminal_ncurses(int tty, int h, int w, int bars, int bw, int bs, int rest, int f[200], int flastd[200]) {

	int i, n, q;
	const wchar_t* bh[] = {L"\u2581", L"\u2582", L"\u2583", L"\u2584", L"\u2585", L"\u2586", L"\u2587", L"\u2588"};

	// output: check if terminal has been resized
	if (!tty) {
		if ( LINES != h || COLS != w) {
			return -1;
		}
	}

	h = h - 1;

	for (i = 0; i <  bars; i++) {

		if(f[i] > flastd[i]){//higher then last one
			if (tty) for (n = flastd[i] / 8; n < f[i] / 8; n++) for (q = 0; q < bw; q++) mvprintw((h - n), i*bw + q + i*bs + rest, "%d",8);
			else for (n = flastd[i] / 8; n < f[i] / 8; n++) for (q = 0; q < bw; q++) mvaddwstr((h - n), i*bw + q + i*bs + rest, bh[7]);
			if (f[i] % 8 != 0) {
				if (tty) for (q = 0; q < bw; q++) mvprintw( (h - n), i*bw + q + i*bs + rest, "%d",(f[i] % 8) );
				else for (q = 0; q < bw; q++) mvaddwstr( (h - n), i*bw + q + i*bs + rest, bh[(f[i] % 8) - 1]);
			}
		}else if(f[i] < flastd[i]){//lower then last one
			for (n = f[i] / 8; n < flastd[i]/8 + 1; n++) for (q = 0; q < bw; q++) mvaddstr( (h - n), i*bw + q + i*bs + rest, " ");
			if (f[i] % 8 != 0) {
				if (tty) for (q = 0; q < bw; q++) mvprintw((h - f[i] / 8), i*bw + q + i*bs + rest, "%d",(f[i] % 8) );
				else for (q = 0; q < bw; q++) mvaddwstr((h - f[i] / 8), i*bw + q + i*bs + rest, bh[(f[i] % 8) - 1]);
			}
		}
		flastd[i] = f[i]; //memmory for falloff func
	}

	refresh();
	return 0;
}


// general: cleanup
void cleanup_terminal_ncurses(void)
{
	echo();
	system("setfont  >/dev/null 2>&1");
	system("setfont /usr/share/consolefonts/Lat2-Fixed16.psf.gz  >/dev/null 2>&1");
	system("setterm -blank 10");
	init_color(1, 1000, 0, 0);
	init_color(2, 0, 1000, 0);
	endwin();
	system("clear");
}