1 files changed, 44 insertions, 1 deletions

diff --git a/uisimulator/lcd-x11.c b/uisimulator/lcd-x11.c
index efd6c9e8bd..7655765137 100644
--- a/uisimulator/lcd-x11.c
+++ b/uisimulator/lcd-x11.c
@@ -17,7 +17,50 @@
  *
  ****************************************************************************/
 
+#include <stdio.h>
+#include <string.h>
+#include <stdarg.h>
+#include <stdlib.h>
+#include <ctype.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+
+#include <errno.h>
+#include <ctype.h>
+#include <time.h>
+
+#include "screenhack.h"
+
 /*
- * Specific implementations for X11, using the generic LCD functions and data.
+ * Specific implementations for X11, using the generic LCD API and data.
  */
 
+#include "lcd.h"
+
+extern unsigned char display[LCD_WIDTH/8][LCD_HEIGHT];
+
+void lcd_update (void)
+{
+  int x, y;
+  int p=0;
+  int bit;
+  XPoint points[LCD_WIDTH * LCD_HEIGHT];
+
+  for(y=0; y<LCD_HEIGHT; y+=8) {
+    for(x=0; x<LCD_WIDTH; x++) {
+      if(display[y/8][x]) {
+        /* one or more bits/pixels are set */
+        for(bit=0; bit<8; bit++) {
+          if(display[y/8][x]&(1<<bit)) {
+            points[p].x = x;
+            points[p].y = y+bit;
+            p++; /* increase the point counter */
+          }
+        }
+        
+      }
+    }
+  }
+  drawdots(&points[0], p);
+}