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/* $Id: display.c,v 1.15 2000/04/12 08:05:45 reinelt Exp $
*
* framework for device drivers
*
* 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: display.c,v $
* Revision 1.15 2000/04/12 08:05:45 reinelt
*
* first version of the HD44780 driver
*
* Revision 1.14 2000/04/03 17:31:52 reinelt
*
* suppress welcome message if display is smaller than 20x2
* change lcd4linux.ppm to 32 pixel high so KDE won't stretch the icon
*
* Revision 1.13 2000/03/30 16:46:57 reinelt
*
* configure now handles '--with-x' and '--without-x' correct
*
* Revision 1.12 2000/03/26 18:46:28 reinelt
*
* bug in pixmap.c that leaded to empty bars fixed
* name conflicts with X11 resolved
*
* Revision 1.11 2000/03/25 05:50:43 reinelt
*
* memory leak in Raster_flush closed
* driver family logic changed
*
* Revision 1.10 2000/03/23 07:24:48 reinelt
*
* PPM driver up and running (but slow!)
*
* Revision 1.9 2000/03/22 15:36:21 reinelt
*
* added '-l' switch (list drivers)
* generic pixmap driver added
* X11 Framework done
*
* Revision 1.8 2000/03/19 08:41:28 reinelt
*
* documentation available! README, README.MatrixOrbital, README.Drivers
* added Skeleton.c as a starting point for new drivers
*
* Revision 1.7 2000/03/18 08:07:04 reinelt
*
* vertical bars implemented
* bar compaction improved
* memory information implemented
*
* Revision 1.6 2000/03/17 09:21:42 reinelt
*
* various memory statistics added
*
* Revision 1.5 2000/03/13 15:58:24 reinelt
*
* release 0.9
* moved row parsing to parser.c
* all basic work finished
*
* Revision 1.4 2000/03/10 17:36:02 reinelt
*
* first unstable but running release
*
* Revision 1.3 2000/03/10 10:49:53 reinelt
*
* MatrixOrbital driver finished
*
* Revision 1.2 2000/03/06 06:04:06 reinelt
*
* minor cleanups
*
*/
/*
* exported functions:
*
* lcd_list (void)
* lists all available drivers to stdout
*
* lcd_init (char *driver)
* initializes the named driver
*
* lcd_query (int *rows, int *cols, int *xres, int *yres, int *bars)
* queries the attributes of the selected driver
*
* lcd_clear ()
* clears the display
*
* int lcd_put (int row, int col, char *text)
* writes text at row, col
*
* int lcd_bar (int type, int row, int col, int max, int len1, int len2)
* draws a specified bar at row, col with len
*
* int lcd_flush (void)
* flushes the framebuffer to the display
*
*/
#include <stdlib.h>
#include <stdio.h>
#include <math.h>
#include "cfg.h"
#include "display.h"
extern LCD Skeleton[];
extern LCD MatrixOrbital[];
extern LCD HD44780[];
extern LCD Raster[];
extern LCD XWindow[];
FAMILY Driver[] = {
{ "Skeleton", Skeleton },
{ "Matrix Orbital", MatrixOrbital },
{ "Parallel port", HD44780 },
{ "Raster", Raster },
#ifndef X_DISPLAY_MISSING
{ "X Window System", XWindow },
#endif
{ NULL }
};
static LCD *Lcd = NULL;
int lcd_list (void)
{
int i, j;
printf ("available display drivers:");
for (i=0; Driver[i].name; i++) {
printf ("\n %-16s:", Driver[i].name);
for (j=0; Driver[i].Model[j].name; j++) {
printf (" %s", Driver[i].Model[j].name);
}
}
printf ("\n");
return 0;
}
int lcd_init (char *driver)
{
int i, j;
for (i=0; Driver[i].name; i++) {
for (j=0; Driver[i].Model[j].name; j++) {
if (strcmp (Driver[i].Model[j].name, driver)==0) {
Lcd=&Driver[i].Model[j];
return Lcd->init(Lcd);
}
}
}
fprintf (stderr, "lcd_init(%s) failed: no such display\n", driver);
return -1;
}
int lcd_query (int *rows, int *cols, int *xres, int *yres, int *bars)
{
if (Lcd==NULL)
return -1;
if (rows) *rows=Lcd->rows;
if(cols) *cols=Lcd->cols;
if (xres) *xres=Lcd->xres;
if (yres) *yres=Lcd->yres;
if (bars) *bars=Lcd->bars;
return 0;
}
int lcd_clear (void)
{
return Lcd->clear();
}
int lcd_put (int row, int col, char *text)
{
if (row<1 || row>Lcd->rows) return -1;
if (col<1 || col>Lcd->cols) return -1;
return Lcd->put(row-1, col-1, text);
}
int lcd_bar (int type, int row, int col, int max, int len1, int len2)
{
if (row<1 || row>Lcd->rows) return -1;
if (col<1 || col>Lcd->cols) return -1;
if (!(type & (BAR_H2 | BAR_V2))) len2=len1;
if (type & BAR_LOG) {
len1=(double)max*log(len1+1)/log(max);
len2=(double)max*log(len2+1)/log(max);
}
return Lcd->bar (type & BAR_HV, row-1, col-1, max, len1, len2);
}
int lcd_flush (void)
{
return Lcd->flush();
}
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