Re: sequence-dialog-items that scroll properly

["Tod Casasent" <tcasasent@diamond.kbsi.com>]

We defined a window-scroller as below:

(defclass window-scroller (ccl::scroller ai3-window-pane) 
  ((max-x :initform nil :accessor max-scroll-x :initarg :max-x)
   (max-y :initform nil :accessor max-scroll-y :initarg :max-y)))

Then in an initialize instance for that type:

(defmethod initialize-instance
	 ((self window-scroller) &rest initargs &key
 	  view-container 
    (draw-scroller-outline t)
    (track-thumb-p t)
    (scroll-bar-class 'ccl::scroll-bar-dialog-item))
  (declare (dynamic-extent initargs))
  (setf (ccl::v-scroller self) nil)          ; fix start-up transient.
  (setf (ccl::h-scroller self) nil)
	 ; delay the set-view-container
  (apply #'call-next-method self :view-container nil initargs)
  (let* ((v-scroll (make-instance scroll-bar-class
                     :scrollee self
                     :direction :vertical
                     ;;; set jump of scroll here
                     :scroll-size 25
                     :track-thumb-p track-thumb-p))
         (h-scroll (make-instance scroll-bar-class
                     :scrollee self
                     :direction :horizontal
                     ;;; set jump of scroll here
                     :scroll-size 25
                     :track-thumb-p track-thumb-p))
         (outline (if draw-scroller-outline
                    (make-instance 'ccl::box-dialog-item))))
    (setf (ccl::scroll-bar-correction self) (make-point (if v-scroll 17 2)
                                                        (if h-scroll 17 2)))
    (setf (ccl::v-scroller self) v-scroll)
    (setf (ccl::h-scroller self) h-scroll)
    (setf (ccl::scroller-outline self) outline)
    (if (and (view-position self) (view-size self))
      (ccl::update-scroll-bars self :length t :position t))
    (when view-container
      (set-view-container self view-container))))

This should fix your problem.  I don't know for sure if there is a better 
way or not, since I haven't had time to look at this.  This code was written 
by my predicessor.

	-Tod


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