--- rxvt-unicode/src/scrollbar.C	2008/02/17 11:37:21	1.52
+++ rxvt-unicode/src/scrollbar.C	2008/02/18 11:42:23	1.58
@@ -63,48 +63,12 @@
 rxvt_term::resize_scrollbar ()
 {
   int delayed_init = 0;
+  int window_sb_x = 0;
 
-#define R_SCROLLBEG_XTERM	0
-#define R_SCROLLEND_XTERM	szHint.height
-#define R_SCROLLBEG_NEXT	0
-#define R_SCROLLEND_NEXT	szHint.height - (SB_BUTTON_TOTAL_HEIGHT + \
-                                                    SB_PADDING)
-#define R_SCROLLBEG_RXVT	(scrollBar.width + 1) + scrollBar.shadow
-#define R_SCROLLEND_RXVT	szHint.height - R_SCROLLBEG_RXVT - \
-                                    (2 * scrollBar.shadow)
+  if (option (Opt_scrollBar_right))
+    window_sb_x = szHint.width - scrollBar.total_width ();
 
-#if defined(PLAIN_SCROLLBAR)
-  if (scrollBar.style == R_SB_PLAIN)
-    {
-      scrollBar.beg = R_SCROLLBEG_XTERM;
-      scrollBar.end = R_SCROLLEND_XTERM;
-      scrollBar.update = &rxvt_term::scrollbar_show_plain;
-    }
-#endif
-#if defined(XTERM_SCROLLBAR)
-  if (scrollBar.style == R_SB_XTERM)
-    {
-      scrollBar.beg = R_SCROLLBEG_XTERM;
-      scrollBar.end = R_SCROLLEND_XTERM;
-      scrollBar.update = &rxvt_term::scrollbar_show_xterm;
-    }
-#endif
-#if defined(NEXT_SCROLLBAR)
-  if (scrollBar.style == R_SB_NEXT)
-    {
-      scrollBar.beg = R_SCROLLBEG_NEXT;
-      scrollBar.end = R_SCROLLEND_NEXT;
-      scrollBar.update = &rxvt_term::scrollbar_show_next;
-    }
-#endif
-#if defined(RXVT_SCROLLBAR)
-  if (scrollBar.style == R_SB_RXVT)
-    {
-      scrollBar.beg = R_SCROLLBEG_RXVT;
-      scrollBar.end = R_SCROLLEND_RXVT;
-      scrollBar.update = &rxvt_term::scrollbar_show_rxvt;
-    }
-#endif
+  scrollBar.update_data ();
 
   if (!scrollBar.win)
     {
@@ -127,6 +91,10 @@
 
       delayed_init = 1;
     }
+  else
+    XMoveResizeWindow (dpy, scrollBar.win,
+                       window_sb_x, 0,
+                       scrollBar.total_width (), szHint.height);
 
   scrollbar_show (1);
 
@@ -138,24 +106,22 @@
  * Update current scrollbar view w.r.t. slider heights, etc.
  */
 int
-rxvt_term::scrollbar_show (int update)
+rxvt_term::scrollbar_show (int refresh)
 {
   int             ret = 0;
-  int             top, bot, len, adj;
 
   if (!scrollBar.state)
     return 0;
 
-  if (update)
+  if (refresh)
     {
-      top = view_start - top_row;
-      bot = top + (nrow - 1);
-      len = max (nrow - 1 - top_row, 1);
-      adj = (((bot - top) * scrollbar_size ()) % len) > 0 ? 1 : 0;
-
-      scrollBar.top = (scrollBar.beg + (top * scrollbar_size ()) / len);
-      scrollBar.len = ((bot - top) * scrollbar_size ()) / len +
-                      scrollbar_minheight () + adj;
+      int sb_top = view_start - top_row;
+      int sb_bot = sb_top + (nrow - 1);
+      int sb_len = max (nrow - 1 - top_row, 1);
+      int sb_size = (sb_bot - sb_top) * scrollBar.size ();
+
+      scrollBar.top = (scrollBar.beg + (sb_top * scrollBar.size ()) / sb_len);
+      scrollBar.len = sb_size / sb_len + scrollBar.min_height () + (sb_size % sb_len > 0);
       scrollBar.bot = (scrollBar.top + scrollBar.len);
       /* no change */
       if (scrollBar.top == scrollBar.last_top
@@ -165,7 +131,7 @@
         return 0;
     }
 
-  ret = (this->*scrollBar.update) (update, scrollBar.last_top, scrollBar.last_bot, scrollBar.len);
+  ret = (this->*scrollBar.update) (refresh, scrollBar.last_top, scrollBar.last_bot, scrollBar.len);
 
   scrollBar.last_top = scrollBar.top;
   scrollBar.last_bot = scrollBar.bot;
@@ -250,5 +216,42 @@
   leftptr_cursor = XCreateFontCursor (term->dpy, XC_left_ptr);
 }
 
+void
+scrollBar_t::update_data ()
+{
+#if defined(PLAIN_SCROLLBAR)
+  if (style == R_SB_PLAIN)
+    {
+      beg = 0;
+      end = term->szHint.height;
+      update = &rxvt_term::scrollbar_show_plain;
+    }
+#endif
+#if defined(XTERM_SCROLLBAR)
+  if (style == R_SB_XTERM)
+    {
+      beg = 0;
+      end = term->szHint.height;
+      update = &rxvt_term::scrollbar_show_xterm;
+    }
+#endif
+#if defined(NEXT_SCROLLBAR)
+  if (style == R_SB_NEXT)
+    {
+      beg = 0;
+      end = term->szHint.height - (SB_BUTTON_TOTAL_HEIGHT + SB_PADDING);
+      update = &rxvt_term::scrollbar_show_next;
+    }
+#endif
+#if defined(RXVT_SCROLLBAR)
+  if (style == R_SB_RXVT)
+    {
+      beg = (width + 1) + shadow;
+      end = term->szHint.height - beg - (2 * shadow);
+      update = &rxvt_term::scrollbar_show_rxvt;
+    }
+#endif
+}
+
 /*----------------------- end-of-file (C source) -----------------------*/