* src/event.c:

+ Refresh the X11 window when an exposure event is received.
    + When resizing the X11 window, start showing extra characters when two
      thirds are visible.

src/caca_internals.h

@@ -85,6 +85,8 @@ extern enum caca_feature _caca_antialiasing;
 #include <X11/Xlib.h>
 extern Display *x11_dpy;
 extern Window x11_window;
+extern Pixmap x11_pixmap;
+extern GC x11_gc;
 extern long int x11_event_mask;
 extern int x11_font_width, x11_font_height;
 extern unsigned int x11_new_width, x11_new_height;

src/event.c

@@ -259,11 +259,24 @@ static unsigned int _lowlevel_event(void)
         {
             KeySym keysym;
 
+            /* Expose event */
+            if(xevent.type == Expose)
+            {
+                XCopyArea(x11_dpy, x11_pixmap, x11_window, x11_gc, 0, 0,
+                          _caca_width * x11_font_width,
+                          _caca_height * x11_font_height, 0, 0);
+                continue;
+            }
+
             /* Resize event */
             if(xevent.type == ConfigureNotify)
             {
-                unsigned int w = xevent.xconfigure.width / x11_font_width;
-                unsigned int h = xevent.xconfigure.height / x11_font_height;
+                unsigned int w, h;
+
+                h = (xevent.xconfigure.height + x11_font_height / 3)
+                      / x11_font_height;
+                w = (xevent.xconfigure.width + x11_font_width / 3)
+                      / x11_font_width;
 
                 if(w == _caca_width && h == _caca_height)
                     continue;

src/graphics.c

@@ -163,12 +163,13 @@ static char *conio_screen;
 #if defined(USE_X11) && !defined(_DOXYGEN_SKIP_ME)
 Display *x11_dpy;
 Window x11_window;
+Pixmap x11_pixmap;
+GC x11_gc;
 long int x11_event_mask = KeyPressMask | KeyReleaseMask | ButtonPressMask
-            | ButtonReleaseMask | PointerMotionMask | StructureNotifyMask;
+            | ButtonReleaseMask | PointerMotionMask | StructureNotifyMask
+            | ExposureMask;
 int x11_font_width, x11_font_height;
 unsigned int x11_new_width, x11_new_height;
-static GC x11_gc;
-static Pixmap x11_pixmap;
 static uint8_t *x11_char, *x11_attr;
 static int x11_colors[16];
 static Font x11_font;