SAOTk Reference Manual
Table of Contents

SAOTk Frame Magnifier Commands

commands

  • magnifier
  • magnifier marker
  • magnifier cursor
  • magnifier mode
  • magnifier update
  • magnifier zoom

    • magnifier

    Control and define the magnifier for this frame widget. In the second form, the existing magnifier widget specified is assigned to this frame widget. When the update command is executed, the frame widget will calulate the proper image to be displayed and will automatically notified the named magnifier widget.
    Syntax:  magnifer yes no # activate or deactivate current magnifier
                   magnifer string integer integer # assign a particular magnifier widget to this frame
    Example: magnifier on
             magnifier mymagnifier 128 128

    magnifier marker

    Specify if markers appear in the current magnifier.
    Syntax:  magnifer marker yes no
    Example: magnifier marker yes

    magnifier cursor

    Specify if the pixel cursor appears in the current magnifier.
    Syntax:  magnifer cursor yes no
    Example: magnifier cursor yes

    magnifier mode

    Specify the algorithm to be used in calculating the magnifier image. The algorithm FAST  can only be used for power of two magnification and results are poor for angles not of 0, 90, 270 degrees. Use the algorithm ACCURATE unless performance is unacceptable.
    Syntax:  magnifer mode [fast | accurate]
    Example: magnifier mode accurate
     

    magnifier update

    Update the current magnifier based on the current cursor position. The coordinates are in canvas coordinates.
    Syntax:  magnifer update numeric numeric
    Example: magnifier update 100 200

    magnifier zoom

    Set the current zoom value for the magnifier. For algorithm ACCURATE, all values, including non-integer values are valid. For algorithm FAST, only values of power of two are valid.
    Syntax:  magnifer zoom numeric
    Example: magnifier zoom 4