metawatch/mw_utility.h

/*
 * (c) 2011 Siegen, Germany by Nils Faerber <nils.faerber@kernelconcepts.de>
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the
 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
 * Boston, MA 02111-1307, USA.
 */

#ifndef _MW_UTILITY_H
#define _MW_UTILITY_H

typedef struct {
	unsigned int res_x;
	unsigned int res_y;
	unsigned char bpp;
	void *pbuf;
} mw_buffer;

typedef enum {
	MW_BLACK = 0,
	MW_WHITE,
	MW_TRANSPARENT
} mw_color;

mw_buffer *mw_alloc_pbuffer(unsigned int res_x, unsigned int res_y, unsigned int bpp);

void mw_free_pbuffer(mw_buffer *mwbuf);

/* makes a buffer for sending to the watch from the drawing buffer */
unsigned char *mw_make_mw_buffer(mw_buffer *mwbuf, int *buflen);

void mw_dump_mw_buffer(mw_buffer *mwbuf);


/* clear/fill entire buffer with color */
void mw_buf_clear(mw_buffer *mwbuf, mw_color clr);

/* draw a single pixel */
void mw_buf_draw_pixel(mw_buffer *mwbuf, unsigned int x, unsigned int y, mw_color clr);

void mw_buf_print(mw_buffer *mwbuf, unsigned int x, unsigned int y, char *text, unsigned char fsize, mw_color fgclr, mw_color bgclr);

void mw_buf_draw_line_bresenham(mw_buffer *mwbuf, unsigned int xstart, unsigned int ystart, unsigned int xend, unsigned int yend, mw_color clr);

#endif