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/* $Id: icon.c,v 1.7 2003/09/11 04:09:53 reinelt Exp $
*
* generic icon and heartbeat handling
*
* written 2003 by Michael Reinelt (reinelt@eunet.at)
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2, or (at your option)
* any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*
*
* $Log: icon.c,v $
* Revision 1.7 2003/09/11 04:09:53 reinelt
* minor cleanups
*
* Revision 1.6 2003/09/10 14:01:53 reinelt
* icons nearly finished\!
*
* Revision 1.5 2003/09/10 03:48:23 reinelt
* Icons for M50530, new processing scheme (Ticks.Text...)
*
* Revision 1.4 2003/09/09 05:30:34 reinelt
* even more icons stuff
*
* Revision 1.3 2003/09/01 04:09:34 reinelt
* icons nearly finished, but MatrixOrbital only
*
* Revision 1.2 2003/08/24 05:17:58 reinelt
* liblcd4linux patch from Patrick Schemitz
*
* Revision 1.1 2003/08/24 04:31:56 reinelt
* icon.c icon.h added
*
*
*/
/*
* exported functions:
*
* int icon_init (int rows, int cols, int xres, int yres, int chars, int icons,
* void(*defchar)(int ascii, char *bitmap))
* initializes all icons stuff and reads the bitmaps from config file.
*
* void icon_clear(void)
* clears the icon framebuffer
*
* int icon_draw (int num, int seq, int row, int col)
* puts icon #num sequence #seq at position row, col in the icon framebuffer
*
* int icon_peek (int row, int col)
* returns icon# or -1 if none from position row, col
*
*/
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include "debug.h"
#include "cfg.h"
#include "icon.h"
typedef struct BITMAP {
int nData;
int lData;
char *Data;
} BITMAP;
static int ROWS=0;
static int COLS=0;
static int XRES=0;
static int YRES=0;
static int CHARS;
static int ICONS=0;
static int *Screen=NULL;
static struct BITMAP *Bitmap=NULL;
static void(*Defchar)(int ascii, char *bitmap);
static int icon_read_bitmap (int num)
{
struct BITMAP *bm = Bitmap+num;
int row, n;
char key[15];
char *val, *v;
char *map;
for (row=0; row<YRES; row++) {
snprintf (key, sizeof(key), "Icon%d.Bitmap%d", num+1, row+1);
val=cfg_get(key, "");
map=bm->Data+row;
n=0;
for (v=val; *v!='\0'; v++) {
if (n>=bm->nData) {
bm->nData++;
bm->Data=realloc(bm->Data, bm->nData*YRES*sizeof(char));
memset (bm->Data+n*YRES, 0, YRES*sizeof(char));
map=bm->Data+n*YRES+row;
}
switch (*v) {
case '|':
n++;
map+=YRES;
break;
case '*':
(*map)<<=1;
(*map)|=1;
break;
default:
(*map)<<=1;
}
}
}
return 0;
}
int icon_init (int rows, int cols, int xres, int yres, int chars, int icons,
void(*defchar)(int ascii, char *bitmap))
{
int n;
if (rows<1 || cols<1)
return -1;
ROWS=rows;
COLS=cols;
XRES=xres;
YRES=yres;
CHARS=chars,
ICONS=icons;
if (Screen) {
free (Screen);
}
if ((Screen=malloc(ROWS*COLS*sizeof(*Screen)))==NULL) {
error ("icon buffer allocation failed: out of memory");
return -1;
}
icon_clear();
if (Bitmap) {
free (Bitmap);
}
if ((Bitmap=malloc(icons*sizeof(*Bitmap)))==NULL) {
error ("icon allocation failed: out of memory");
return -1;
}
Defchar=defchar;
for (n=0; n<icons; n++) {
Bitmap[n].nData=1;
Bitmap[n].lData=0;
Bitmap[n].Data=malloc(YRES*sizeof(char));
memset (Bitmap[n].Data, 0, YRES*sizeof(char));
icon_read_bitmap(n);
// icons use last ascii codes from userdef chars
if (Defchar) Defchar (CHARS-n-1, Bitmap[n].Data);
}
return 0;
}
void icon_clear(void)
{
int n;
for (n=0; n<ROWS*COLS; n++) {
Screen[n]=-1;
}
}
int icon_draw (int num, int seq, int row, int col)
{
if (row>=0 && col>=0) {
// icons use last ascii codes from userdef chars
Screen[row*COLS+col]=CHARS-num-1;
}
if (seq>=0) {
seq%=Bitmap[num].nData;
if (seq!=Bitmap[num].lData) {
Bitmap[num].lData=seq;
if (Defchar) Defchar (CHARS-num-1, Bitmap[num].Data+seq*YRES);
}
}
return 0;
}
int icon_peek (int row, int col)
{
if (Screen)
return Screen[row*COLS+col];
else
return -1;
}
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