[lcd4linux @ 2000-03-22 15:36:21 by reinelt]

added '-l' switch (list drivers)
generic pixmap driver added
X11 Framework done

1 files changed, 165 insertions, 0 deletions

diff --git a/pixmap.c b/pixmap.c
new file mode 100644
index 0000000..ceaa1f2
--- /dev/null
+++ b/pixmap.c
@@ -0,0 +1,165 @@
+/* $Id: pixmap.c,v 1.1 2000/03/22 15:36:21 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 1.1  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 r, int c);
+ *   allocates & clear pixmap wit r rows and c columns
+ *
+ * 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;
+unsigned char *Pixmap=NULL;
+
+int pix_clear(void)
+{
+  int i;
+
+  for (i=0; i<rows*cols; i++) {
+    Pixmap[i]=0;
+  }
+
+  return 0;
+}
+
+int pix_init (int r, int c)
+{
+  if (r<1 || c<1) 
+    return -1;
+  
+  if (Pixmap) 
+    free (Pixmap);
+
+  rows=r*YRES;
+  cols=c*XRES;
+
+  if ((Pixmap=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=*text;
+    for (y=0; y<YRES; y++) {
+      mask=1<<XRES;
+      for (x=0; x<XRES; x++) {
+	mask>>=1;
+	Pixmap[(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 i, x, y, len, rev;
+  unsigned char *p;
+  
+  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++) {
+	Pixmap[(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;
+  	Pixmap[(row+y)*cols+col+x]=y<len?!rev:rev;
+      }
+    }
+    break;
+
+  }
+  return 0;
+}
+