1 files changed, 27 insertions, 20 deletions
diff --git a/library/text.tcl b/library/text.tcl
index 051f9b8..22d96d7 100644
--- a/library/text.tcl
+++ b/library/text.tcl
@@ -3,7 +3,7 @@
 # This file defines the default bindings for Tk text widgets and provides
 # procedures that help in implementing the bindings.
 #
-# RCS: @(#) $Id: text.tcl,v 1.39 2005/07/26 12:38:19 dkf Exp $
+# RCS: @(#) $Id: text.tcl,v 1.40 2005/09/10 14:53:20 das Exp $
 #
 # Copyright (c) 1992-1994 The Regents of the University of California.
 # Copyright (c) 1994-1997 Sun Microsystems, Inc.
@@ -452,26 +452,33 @@ set ::tk::Priv(prevPos) {}
 # on other platforms.  We must be careful not to round -ve values of %D
 # down to zero.
 
-# We must make sure that positive and negative movements are rounded
-# equally to integers, avoiding the problem that
-#     (int)1/3 = 0,
-# but
-#     (int)-1/3 = -1
-# The following code ensure equal +/- behaviour.
-bind Text <MouseWheel> {
-    if {%D >= 0} {
-	%W yview scroll [expr {-%D/3}] pixels
-    } else {
-	%W yview scroll [expr {(2-%D)/3}] pixels
-    }
-}
 if {[tk windowingsystem] eq "aqua"} {
-bind Text <Option-MouseWheel> {
-    %W yview scroll [expr {-150 * %D}] pixels
-}
-bind Text <MouseWheel> {
-    %W yview scroll [expr {-15 * %D}] pixels
-}
+    bind Text <MouseWheel> {
+        %W yview scroll [expr {-15 * (%D)}] pixels
+    }
+    bind Text <Option-MouseWheel> {
+        %W yview scroll [expr {-150 * (%D)}] pixels
+    }
+    bind Text <Shift-MouseWheel> {
+        %W xview scroll [expr {-15 * (%D)}] pixels
+    }
+    bind Text <Shift-Option-MouseWheel> {
+        %W xview scroll [expr {-150 * (%D)}] pixels
+    }
+} else {
+    # We must make sure that positive and negative movements are rounded
+    # equally to integers, avoiding the problem that
+    #     (int)1/3 = 0,
+    # but
+    #     (int)-1/3 = -1
+    # The following code ensure equal +/- behaviour.
+    bind Text <MouseWheel> {
+	if {%D >= 0} {
+	    %W yview scroll [expr {-%D/3}] pixels
+	} else {
+	    %W yview scroll [expr {(2-%D)/3}] pixels
+	}
+    }
 }
 
 if {"x11" eq [tk windowingsystem]} {