--- rxvt-unicode/src/scrollbar.h	2008/01/05 12:19:34	1.11
+++ rxvt-unicode/src/scrollbar.h	2008/02/17 12:11:36	1.16
@@ -5,7 +5,49 @@
 
 struct rxvt_term;
 
+#define R_SB_NEXT               1
+#define R_SB_XTERM              2
+#define R_SB_PLAIN              4
+#define R_SB_RXVT               8
+
+#define R_SB_ALIGN_CENTRE       0
+#define R_SB_ALIGN_TOP          1
+#define R_SB_ALIGN_BOTTOM       2
+
+#define SB_WIDTH_NEXT           19
+#define SB_WIDTH_XTERM          15
+#define SB_WIDTH_PLAIN          7
+#ifndef SB_WIDTH_RXVT
+# define SB_WIDTH_RXVT          10
+#endif
+
+/*
+ * NeXT scrollbar defines
+ */
+#define SB_PADDING              1
+#define SB_BORDER_WIDTH         1
+#define SB_BEVEL_WIDTH_UPPER_LEFT       1
+#define SB_BEVEL_WIDTH_LOWER_RIGHT      2
+#define SB_LEFT_PADDING         (SB_PADDING + SB_BORDER_WIDTH)
+#define SB_MARGIN_SPACE         (SB_PADDING * 2)
+#define SB_BUTTON_WIDTH         (SB_WIDTH_NEXT - SB_MARGIN_SPACE - SB_BORDER_WIDTH)
+#define SB_BUTTON_HEIGHT        (SB_BUTTON_WIDTH)
+#define SB_BUTTON_SINGLE_HEIGHT (SB_BUTTON_HEIGHT + SB_PADDING)
+#define SB_BUTTON_BOTH_HEIGHT   (SB_BUTTON_SINGLE_HEIGHT * 2)
+#define SB_BUTTON_TOTAL_HEIGHT  (SB_BUTTON_BOTH_HEIGHT + SB_PADDING)
+#define SB_BUTTON_BEVEL_X       (SB_LEFT_PADDING)
+#define SB_BUTTON_FACE_X        (SB_BUTTON_BEVEL_X + SB_BEVEL_WIDTH_UPPER_LEFT)
+#define SB_THUMB_MIN_HEIGHT     (SB_BUTTON_WIDTH - (SB_PADDING * 2))
+
+enum sb_state {
+  STATE_IDLE = 1,
+  STATE_MOTION,
+  STATE_UP,
+  STATE_DOWN,
+};
+
 struct scrollBar_t {
+  rxvt_term *term;
   char            state;        /* scrollbar state                          */
   char            init;         /* scrollbar has been initialised           */
   unsigned int    beg;          /* slider sub-window begin height           */
@@ -23,26 +65,31 @@
   Window          win;
   Cursor          leftptr_cursor;
   int             (rxvt_term::*update)(int, int, int, int);
+  void setup (rxvt_term *);
 
-  void setIdle()   { state =  1 ; }
-  void setMotion() { state = 'm'; }
-  void setUp()     { state = 'U'; }
-  void setDn()     { state = 'D'; }
+  bool upButton (int y)
+  {
+    if (style == R_SB_NEXT)
+      return y > end && y <= end + width + 1;
+    if (style == R_SB_RXVT)
+      return y < beg;
+    return false;
+  }
+  bool dnButton (int y)
+  {
+    if (style == R_SB_NEXT)
+      return y > end + width + 1;
+    if (style == R_SB_RXVT)
+      return y > end;
+    return false;
+  }
+  unsigned total_width ()
+  {
+    return width + shadow * 2;
+  }
 };
 
-#define scrollbar_TotalWidth()  (scrollBar.width + scrollBar.shadow * 2)
-#define scrollbar_isMotion()    (scrollBar.state == 'm')
-#define scrollbar_isUp()        (scrollBar.state == 'U')
-#define scrollbar_isDn()        (scrollBar.state == 'D')
-#define scrollbar_isUpDn()      (scrollbar_isUp () || scrollbar_isDn ())
-
-#define scrollbarnext_dnval()   (scrollBar.end + (scrollBar.width + 1))
-#define scrollbarnext_upButton(y)       ((y) > scrollBar.end \
-                                         && (y) <= scrollbarnext_dnval ())
-#define scrollbarnext_dnButton(y)       ((y) > scrollbarnext_dnval())
 #define SCROLLNEXT_MINHEIGHT    SB_THUMB_MIN_HEIGHT
-#define scrollbarrxvt_upButton(y)       ((y) < scrollBar.beg)
-#define scrollbarrxvt_dnButton(y)       ((y) > scrollBar.end)
 #define SCROLLRXVT_MINHEIGHT    10
 
 #define scrollbar_minheight()   (scrollBar.style == R_SB_NEXT        \
@@ -54,39 +101,6 @@
 #define scrollbar_size()                (scrollBar.end - scrollBar.beg \
                                          - scrollbar_minheight ())
 
-#define R_SB_ALIGN_CENTRE       0
-#define R_SB_ALIGN_TOP          1
-#define R_SB_ALIGN_BOTTOM       2
-
-#define R_SB_NEXT               1
-#define R_SB_XTERM              2
-#define R_SB_PLAIN              4
-#define R_SB_RXVT               8
-
-#define SB_WIDTH_NEXT           19
-#define SB_WIDTH_XTERM          15
-#define SB_WIDTH_PLAIN          7
-#ifndef SB_WIDTH_RXVT
-# define SB_WIDTH_RXVT          10
-#endif
-
-/*
- * NeXT scrollbar defines
- */
-#define SB_PADDING              1
-#define SB_BORDER_WIDTH         1
-#define SB_BEVEL_WIDTH_UPPER_LEFT       1
-#define SB_BEVEL_WIDTH_LOWER_RIGHT      2
-#define SB_LEFT_PADDING         (SB_PADDING + SB_BORDER_WIDTH)
-#define SB_MARGIN_SPACE         (SB_PADDING * 2)
-#define SB_BUTTON_WIDTH         (SB_WIDTH_NEXT - SB_MARGIN_SPACE - SB_BORDER_WIDTH)
-#define SB_BUTTON_HEIGHT        (SB_BUTTON_WIDTH)
-#define SB_BUTTON_SINGLE_HEIGHT (SB_BUTTON_HEIGHT + SB_PADDING)
-#define SB_BUTTON_BOTH_HEIGHT   (SB_BUTTON_SINGLE_HEIGHT * 2)
-#define SB_BUTTON_TOTAL_HEIGHT  (SB_BUTTON_BOTH_HEIGHT + SB_PADDING)
-#define SB_BUTTON_BEVEL_X       (SB_LEFT_PADDING)
-#define SB_BUTTON_FACE_X        (SB_BUTTON_BEVEL_X + SB_BEVEL_WIDTH_UPPER_LEFT)
-#define SB_THUMB_MIN_HEIGHT     (SB_BUTTON_WIDTH - (SB_PADDING * 2))
  /*
   *    +-------------+
   *    |             | <---< SB_PADDING