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db5e3666b5
various memory statistics added git-svn-id: https://ssl.bulix.org/svn/lcd4linux/trunk@11 3ae390bd-cb1e-0410-b409-cd5a39f66f1f
145 lines
3.3 KiB
C
145 lines
3.3 KiB
C
/* $Id: display.c,v 1.6 2000/03/17 09:21:42 reinelt Exp $
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*
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* framework for device drivers
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*
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* Copyright 1999, 2000 by Michael Reinelt (reinelt@eunet.at)
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2, or (at your option)
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* any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*
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*
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* $Log: display.c,v $
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* Revision 1.6 2000/03/17 09:21:42 reinelt
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*
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* various memory statistics added
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*
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* Revision 1.5 2000/03/13 15:58:24 reinelt
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*
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* release 0.9
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* moved row parsing to parser.c
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* all basic work finished
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*
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* Revision 1.4 2000/03/10 17:36:02 reinelt
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*
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* first unstable but running release
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*
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* Revision 1.3 2000/03/10 10:49:53 reinelt
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*
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* MatrixOrbital driver finished
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*
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* Revision 1.2 2000/03/06 06:04:06 reinelt
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*
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* minor cleanups
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*
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*/
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/*
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* exported functions:
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*
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* lcd_init (char *display)
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* initializes the named driver
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*
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* lcd_query (int *rows, int *cols, int *xres, int *yres, int *bars)
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* queries the attributes of the selected driver
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*
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* lcd_clear ()
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* clears the display
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*
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* int lcd_put (int row, int col, char *text)
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* writes text at row, col
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*
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* int lcd_bar (int type, int row, int col, int max, int len1, int len2)
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* draws a specified bar at row, col with len
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*
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* int lcd_flush (void)
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* flushes the framebuffer to the display
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*
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*/
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#include <stdlib.h>
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#include <stdio.h>
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#include <math.h>
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#include "cfg.h"
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#include "display.h"
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extern DISPLAY MatrixOrbital[];
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FAMILY Driver[] = {
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{ "MatrixOrbital", MatrixOrbital },
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{ "" }
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};
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static DISPLAY *Display = NULL;
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int lcd_init (char *display)
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{
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int i, j;
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for (i=0; Driver[i].name[0]; i++) {
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for (j=0; Driver[i].Display[j].name[0]; j++) {
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if (strcmp (Driver[i].Display[j].name, display)==0) {
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Display=&Driver[i].Display[j];
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return Display->init(Display);
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}
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}
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}
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fprintf (stderr, "lcd_init(%s) failed: no such display\n", display);
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return -1;
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}
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int lcd_query (int *rows, int *cols, int *xres, int *yres, int *bars)
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{
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if (Display==NULL)
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return -1;
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*rows=Display->rows;
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*cols=Display->cols;
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*xres=Display->xres;
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*yres=Display->yres;
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*bars=Display->bars;
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return 0;
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}
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int lcd_clear (void)
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{
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return Display->clear();
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}
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int lcd_put (int row, int col, char *text)
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{
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if (row<1 || row>Display->rows) return -1;
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if (col<1 || col>Display->cols) return -1;
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return Display->put(row-1, col-1, text);
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}
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int lcd_bar (int type, int row, int col, int max, int len1, int len2)
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{
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if (row<1 || row>Display->rows) return -1;
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if (col<1 || col>Display->cols) return -1;
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if (!(type & (BAR_H2 | BAR_V2))) len2=len1;
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if (type & BAR_LOG) {
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len1=(double)max*log(len1+1)/log(max);
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len2=(double)max*log(len2+1)/log(max);
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}
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return Display->bar (type & BAR_HV, row-1, col-1, max, len1, len2);
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}
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int lcd_flush (void)
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{
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return Display->flush();
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}
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