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/* $Id: pixmap.c,v 1.5 2000/03/26 18:46:28 reinelt Exp $
*
* generic pixmap driver
*
* Copyright 1999, 2000 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: pixmap.c,v $
* Revision 1.5 2000/03/26 18:46:28 reinelt
*
* bug in pixmap.c that leaded to empty bars fixed
* name conflicts with X11 resolved
*
* Revision 1.4 2000/03/25 05:50:43 reinelt
*
* memory leak in Raster_flush closed
* driver family logic changed
*
* Revision 1.3 2000/03/24 11:36:56 reinelt
*
* new syntax for raster configuration
* changed XRES and YRES to be configurable
* PPM driver works nice
*
* Revision 1.2 2000/03/23 07:24:48 reinelt
*
* PPM driver up and running (but slow!)
*
* Revision 1.1 2000/03/22 15:36:21 reinelt
*
* added '-l' switch (list drivers)
* generic pixmap driver added
* X11 Framework done
*
*/
/*
* exported functions:
*
* int pix_clear(void);
* clears the pixmap
*
* int pix_init (int rows, int cols, int XRES, int YRES);
* allocates & clears pixmap
*
* int pix_put (int row, int col, char *text);
* draws text into the pixmap
*
* int pix_bar (int type, int row, int col, int max, int len1, int len2);
* draws a bar into the pixmap
*
*/
#include <stdlib.h>
#include <stdio.h>
#include "display.h"
#include "pixmap.h"
#include "fontmap.h"
static int ROWS=0;
static int COLS=0;
static int XRES=0;
static int YRES=0;
unsigned char *LCDpixmap=NULL;
int pix_clear(void)
{
int i;
for (i=0; i<ROWS*COLS; i++) {
LCDpixmap[i]=0;
}
return 0;
}
int pix_init (int rows, int cols, int xres, int yres)
{
if (rows<1 || cols<1 || xres<1 || yres<1)
return -1;
if (LCDpixmap)
free (LCDpixmap);
XRES=xres;
YRES=yres;
ROWS=rows*yres;
COLS=cols*xres;
if ((LCDpixmap=malloc (ROWS*COLS*sizeof(unsigned char)))==NULL)
return -1;
return pix_clear();
}
int pix_put (int row, int col, char *text)
{
int c, x, y, mask;
row*=YRES;
col*=XRES;
while (*text && col<COLS) {
c=*(unsigned char*)text;
if (c!='\t') {
for (y=0; y<YRES; y++) {
mask=1<<XRES;
for (x=0; x<XRES; x++) {
mask>>=1;
LCDpixmap[(row+y)*COLS+col+x]=Fontmap[c][y]&mask?1:0;
}
}
}
col+=XRES;
text++;
}
return 0;
}
int pix_bar (int type, int row, int col, int max, int len1, int len2)
{
int x, y, len, rev;
row*=YRES;
col*=XRES;
if (type & BAR_H) {
if (max>COLS-col)
max=COLS-col;
} else {
if (max>ROWS-row)
max=ROWS-row;
}
if (len1<1) len1=1;
else if (len1>max) len1=max;
if (len2<1) len2=1;
else if (len2>max) len2=max;
rev=0;
switch (type) {
case BAR_L:
len1=max-len1;
len2=max-len2;
rev=1;
case BAR_R:
for (y=0; y<YRES; y++) {
len=y<YRES/2?len1:len2;
for (x=0; x<max; x++) {
LCDpixmap[(row+y)*COLS+col+x]=x<len?!rev:rev;
}
}
break;
case BAR_U:
len1=max-len1;
len2=max-len2;
rev=1;
case BAR_D:
for (y=0; y<max; y++) {
for (x=0; x<XRES; x++) {
len=x<XRES/2?len1:len2;
LCDpixmap[(row+y)*COLS+col+x]=y<len?!rev:rev;
}
}
break;
}
return 0;
}
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