bionic (3) viewcmds.3U.gz

NAME

       CenterCmd,  CloseEditorCmd, GravityCmd, GridCmd, GridSpacingCmd, NormSizeCmd, OrientationCmd, RedToFitCmd
       - commands for modifying editor attributes

SYNOPSIS

       #include <Unidraw/Commands/viewcmds.h>

DESCRIPTION

       The Unidraw library predefines several commands for altering the attributes of editors and their viewers.
       CenterCmd  centers  each of the editor's viewers.  CloseEditorCmd closes the editor, removing it from the
       screen.  GravityCmd turns gravity on by activating the editor's GravityVar, if it defines  one.   GridCmd
       toggles the visibility of each viewer's grid, while GridSpacingCmd lets the user specify the grid spacing
       for all grids.  Finally, NormSizeCmd sets each viewer's magnification to a factor of one,  OrientationCmd
       toggles  each viewer's orientation between landscape mode and portrait mode, and RedToFitCmd changes each
       viewer's magnification so that its component view is fully visible.

CENTERCMD PUBLIC OPERATIONS

       CenterCmd(ControlInfo*)
       CenterCmd(Editor* = nil)
              Construct a new CenterCmd.

       virtual void Execute()
              Execute simply calls CenterOp on each of the editor's viewers.

       virtual boolean Reversible()
              CenterCmd is not reversible.

CLOSEEDITORCMD PUBLIC OPERATIONS

       CloseEditorCmd(ControlInfo*)
       CloseEditorCmd(Editor* = nil)
              Construct a new CloseEditorCmd.

       virtual void Execute()
              Execute calls Close on the global unidraw object with the CloseEditorCmd's editor as its argument.
              Execute prompts the use to save the component if it does not appear in any other open editors.  If
              no other editors are open at all, Execute creates and executes a QuitCmd.

       virtual boolean Reversible()
              CloseEditorCmd is not reversible.

GRAVITYCMD PUBLIC OPERATIONS

       GravityCmd(ControlInfo*)
       GravityCmd(Editor* = nil)
              Construct a new GravityCmd.

       virtual void Execute()
              Execute calls Activate on the editor's GravityVar (if it defines one)  with  the  inverse  of  the
              value returned by GravityVar's IsActive operation.

       virtual boolean Reversible()
              GravityCmd is not reversible.

GRIDCMD PUBLIC OPERATIONS

       GridCmd(ControlInfo*)
       GridCmd(Editor* = nil)
              Construct a new GridCmd.

       virtual void Execute()
              Execute  calls  the  Visibility operation on the grid from each of the editor's viewers, supplying
              the inverse of the value returned by Grid's IsVisible oepation.

       virtual boolean Reversible()
              GridCmd is not reversible.

GRIDSPACINGCMD PUBLIC OPERATIONS

       GridSpacingCmd(ControlInfo*)
       GridSpacingCmd(Editor* = nil)
              Construct a new GridSpacingCmd.

       virtual void Execute()
              Execute prompts the user to specify grid spacing information through a GridDialog.   If  the  user
              does not cancel the dialog, then Execute will pass the specified grid spacing to a SetSpacing call
              on each viewer's grid.

       virtual boolean Reversible()
              GridSpacingCmd is not reversible.

NORMSIZECMD PUBLIC OPERATIONS

       NormSizeCmd(ControlInfo*)
       NormSizeCmd(Editor* = nil)
              Construct a new NormSizeCmd.

       virtual void Execute()
              Execute simply calls SetMagnification with an argument of 1 on each of the editor's viewers.

       virtual boolean Reversible()
              NormSizeCmd is not reversible.

ORIENTATIONCMD PUBLIC OPERATIONS

       OrientationCmd(ControlInfo*)
       OrientationCmd(Editor* = nil)
              Construct a new OrientationCmd.

       virtual void Execute()
              Execute switches the orientation  of  each  of  the  editor's  viewers  via  their  SetOrientation
              operation.

       virtual boolean Reversible()
              OrientationCmd is not reversible.

REDTOFITCMD PUBLIC OPERATIONS

       RedToFitCmd(ControlInfo*)
       RedToFitCmd(Editor* = nil)
              Construct a new RedToFitCmd.

       virtual void Execute()
              Execute simply calls ReduceToFit on each of the editor's viewers.

       virtual boolean Reversible()
              RedToFitCmd is not reversible.

SEE ALSO

       BasicDialog(3U), Command(3U), Grid(3U), Unidraw(3U), Viewer(3U), catcmds(3U), globals(3U), statevars(3U)