Panner

Section: ET++ class description (n)
Updated: automatically Fri Mar 15 14:12:40 1991
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NAME

Panner.short - controls scrolling of a Clipper

DESCRIPTION

The Panner is similar to a scrollbar. However, the Panner allows to scroll the View inside a Clipper in any direction and as well gives an overview of the View's size in relation to the Clipper's size. Because a Panner is usually rather small, the whole View can be scrolled with little mouse movements.
Example:

Window *MyDocument::DoMakeWindows()
{
    View *view = new MyView(/* ... */);
    Scroller *scroller = new Scroller(view);
    Panner *panner = new Panner(scroller->GetClipper(), Point(40));

    return new Window(this, Point(400), eWinDefault,
                   new Expander(cIdNone, eVert, gPoint4,
                           scroller,
                           panner,
                           NULL
                   )
               );
}

classes are never derived from Panner.
class Panner is sometimes reused directly.
class Panner contains 5 methods.

owner of class:: nobody.
baseclasses:: Slider
flags:: CompositeVObjectFlags

INSTANCE VARIABLES

cl (private Clipper *)

the Clipper that is controlled by the Panner. It must not be NULL.

INSTANCE METHOD LIST

client interface: Panner
implementation: Control
DoObserve
GetMinSize
~Panner

FILES

declaration:: Panner.h

KNOWN PROBLEMS

The MetaDef and MetaImpl statements are missing.

HISTORY

joe@csesbg.at Thu Sep 12 11:23 1991 MET DST

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Time: 00:40:24 GMT, March 30, 2022