(locate): Remove dot at the end of error argument.

[gnu-emacs] / lisp / scroll-bar.el

diff --git a/lisp/scroll-bar.el b/lisp/scroll-bar.el
index 5458ab0054f1e1868832075ecdc5200528ec02ca..493a271cf2339ea179cc31561c2d26e6cecd4849 100644 (file)
--- a/lisp/scroll-bar.el
+++ b/lisp/scroll-bar.el
@@ -1,6 +1,7 @@
-;;; scroll-bar.el --- window system-independent scroll bar support.
+;;; scroll-bar.el --- window system-independent scroll bar support
 
-;; Copyright (C) 1993, 1994, 1995 Free Software Foundation, Inc.
+;; Copyright (C) 1993, 1994, 1995, 1999, 2000, 2001
+;;  Free Software Foundation, Inc.
 
 ;; Maintainer: FSF
 ;; Keywords: hardware
@@ -250,16 +251,17 @@ EVENT should be a scroll bar click."
         (before-scroll))
     (with-current-buffer (window-buffer window)
       (setq before-scroll point-before-scroll))
-    (save-selected-window
-      (let ((portion-whole (nth 2 end-position)))
-       (select-window window)
-       (setq before-scroll
-             (or before-scroll (point)))
-       (scroll-down
-        (scroll-bar-scale portion-whole (1- (window-height))))))
-    (sit-for 0)
-    (with-current-buffer (window-buffer window)
-      (setq point-before-scroll before-scroll))))
+    (unwind-protect
+       (save-selected-window
+         (let ((portion-whole (nth 2 end-position)))
+           (select-window window)
+           (setq before-scroll
+                 (or before-scroll (point)))
+           (scroll-down
+            (scroll-bar-scale portion-whole (1- (window-height)))))
+         (sit-for 0))
+      (with-current-buffer (window-buffer window)
+       (setq point-before-scroll before-scroll)))))
 
 (defun scroll-bar-scroll-up (event)
   "Scroll the line next to the scroll bar click to the top of the window.
@@ -270,28 +272,79 @@ EVENT should be a scroll bar click."
         (before-scroll))
     (with-current-buffer (window-buffer window)
       (setq before-scroll point-before-scroll))
-    (save-selected-window
-      (let ((portion-whole (nth 2 end-position)))
-       (select-window window)
-       (setq before-scroll
-             (or before-scroll (point)))
-       (scroll-up
-        (scroll-bar-scale portion-whole (1- (window-height))))))
-    (sit-for 0)
-    (with-current-buffer (window-buffer window)
-      (setq point-before-scroll before-scroll))))
+    (unwind-protect
+       (save-selected-window
+         (let ((portion-whole (nth 2 end-position)))
+           (select-window window)
+           (setq before-scroll
+                 (or before-scroll (point)))
+           (scroll-up
+            (scroll-bar-scale portion-whole (1- (window-height)))))
+         (sit-for 0))
+      (with-current-buffer (window-buffer window)
+       (setq point-before-scroll before-scroll)))))
 
 \f
-;;;; Bindings.
+;;; Tookit scroll bars.
 
-;;; For now, we'll set things up to work like xterm.
-(global-set-key [vertical-scroll-bar mouse-1] 'scroll-bar-scroll-up)
-(global-set-key [vertical-scroll-bar drag-mouse-1] 'scroll-bar-scroll-up)
+(defun scroll-bar-toolkit-scroll (event)
+  (interactive "e")
+  (let* ((end-position (event-end event))
+        (window (nth 0 end-position))
+        (part (nth 4 end-position))
+        before-scroll)
+    (cond ((eq part 'end-scroll))
+         (t
+          (with-current-buffer (window-buffer window)
+            (setq before-scroll point-before-scroll))
+          (save-selected-window
+            (select-window window)
+            (setq before-scroll (or before-scroll (point)))
+            (cond ((eq part 'above-handle)
+                   (scroll-up '-))
+                  ((eq part 'below-handle)
+                   (scroll-up nil))
+                  ((eq part 'ratio)
+                   (let* ((portion-whole (nth 2 end-position))
+                          (lines (scroll-bar-scale portion-whole
+                                                   (1- (window-height)))))
+                     (scroll-up (cond ((not (zerop lines)) lines)
+                                      ((< (car portion-whole) 0) -1)
+                                      (t 1)))))
+                  ((eq part 'up)
+                   (scroll-up -1))
+                  ((eq part 'down)
+                   (scroll-up 1))
+                  ((eq part 'top)
+                   (set-window-start window (point-min)))
+                  ((eq part 'bottom)
+                   (goto-char (point-max))
+                   (recenter))
+                  ((eq part 'handle)
+                   (scroll-bar-drag-1 event))))
+          (sit-for 0)
+          (with-current-buffer (window-buffer window)
+            (setq point-before-scroll before-scroll))))))
 
-(global-set-key [vertical-scroll-bar down-mouse-2] 'scroll-bar-drag)
 
-(global-set-key [vertical-scroll-bar mouse-3] 'scroll-bar-scroll-down)
-(global-set-key [vertical-scroll-bar drag-mouse-3] 'scroll-bar-scroll-down)
+\f
+;;;; Bindings.
+
+;;; For now, we'll set things up to work like xterm.
+(cond ((and (boundp 'x-toolkit-scroll-bars) x-toolkit-scroll-bars)
+       (global-set-key [vertical-scroll-bar mouse-1]
+                      'scroll-bar-toolkit-scroll))
+      (t
+       (global-set-key [vertical-scroll-bar mouse-1]
+                      'scroll-bar-scroll-up)
+       (global-set-key [vertical-scroll-bar drag-mouse-1]
+                      'scroll-bar-scroll-up)
+       (global-set-key [vertical-scroll-bar down-mouse-2]
+                      'scroll-bar-drag)
+       (global-set-key [vertical-scroll-bar mouse-3]
+                      'scroll-bar-scroll-down)
+       (global-set-key [vertical-scroll-bar drag-mouse-3]
+                      'scroll-bar-scroll-down)))
 
 \f
 (provide 'scroll-bar)