Little improvment for repainting

xwin.c

@@ -35,6 +35,8 @@
 #include <stdlib.h> /* for exit() */
 #endif
 
+#include <sys/time.h>
+
 /*
  * IMPORTS: routines that this module vectors out to 
  */
@@ -67,6 +69,11 @@ extern void xdrawrect();
  */
 static void help_popup();
 static void help_popdown();
+static struct timeval last_repaint;
+static long int timediff(struct timeval* t1, struct timeval* t2)
+{
+    return 1000000 * (t2->tv_sec - t1->tv_sec) + t2->tv_usec - t1->tv_usec;
+}
 
 static String fallback_resources[] = {
     "*window.width:		600",
@@ -338,10 +345,20 @@ static void
 c_resize(Widget w, XtPointer data, XEvent* event, Boolean* continue_to_dispatch)
 {
     UNUSED(w, data, event, continue_to_dispatch);
-    /*
-     * printf("Resize\n"); 
-     */
+     /*
+      * printf("Resize\n"); 
+      */
+    long int diff;
+    struct timeval t;
+
+    gettimeofday(&t, NULL);
+    diff = timediff(&last_repaint, &t);
+
+    if (diff < (long int)50000)
+        return;
     xrepaint();
+
+    gettimeofday(&last_repaint, NULL);
 }
 
 static void
@@ -351,6 +368,14 @@ c_repaint(Widget w, XtPointer data, XEvent* event, Boolean* continue_to_dispatch
     /*
      * printf("Expose\n"); 
      */
+    long int diff;
+    struct timeval t;
+
+    gettimeofday(&t, NULL);
+    diff = timediff(&last_repaint, &t);
+
+    if (diff < (long int)50000)
+        return;
     xrepaint_noclear();
 }