SYNOPSIS

#include <Unidraw/Tools/magnify.h>

DESCRIPTION

MagnifyTool lets the user magnify a portion a viewer's contents. The user sweeps out a rectangular area with the MagnifyTool, and the viewer will magnify the area to occupy the entire screen, if possible.

PUBLIC OPERATIONS

MagnifyTool(ControlInfo* = nil)

Instantiate a MagnifyTool.

virtual Manipulator* CreateManipulator(

Viewer*, Event&, Transformer*

)

virtual void InterpretManipulator(Manipulator*)

CreateManipulator generates a DragManip with a RubberRect to provide visual feedback for specifying the rectangular area to be magnified. InterpretManipulator does not create a command; rather, it examines the DragManipulator's RubberRect and calls Magnify on the viewer with the RubberRect's final coordinates.