/*
 * canvas.c
 *
 *  Created on: Jan 15, 2016
 *      Author: tkl
 */

#include <stddef.h>
#include <string.h>

#include "font.h"
#include "bitmap.h"

int bitmap_print_text(const struct font *font, struct bitmap *bitmap, int x_pos,
		int y_pos, char *text)
{
	int i = 0, pos = 0;
	/* align to page */
	if(y_pos % 8 != 0)
		y_pos -= y_pos % 8;

	pos = y_pos / 8 * bitmap->x_size + x_pos;
	while(text[i] != 0) {
		while(((pos + font->char_size_x) % bitmap->x_size) < font->char_size_x)
			pos++;
		memcpy(&bitmap->buffer[pos], &font->font[text[i] * font->char_size_x],
				font->char_size_x);
		memset(&bitmap->buffer[pos + font->char_size_x], 0x00,
				font->char_between);
		i++;
		pos += font->char_size_x + 1;
	}

	return 0;
}