Class: VariablePanelController

• Inheritance
• Description
• Instance protocol
  • accessing
  • event handling
  • private
  • queries
  • user operations

Inheritance:

   Object
   |
   +--Controller
      |
      +--VariablePanelController
         |
         +--VariableHorizontalPanelController
         |
         +--VariableVerticalPanelController

Package:

stx:libwidg

Category:

Interface-Support-Controllers

Version:

rev: 1.52 date: 2021/11/18 12:08:07

user: cg

file: VariablePanelController.st directory: libwidg

module: stx stc-classLibrary: libwidg

Description:

An abstract class for variablePanel controllers;
normally, not used directly by applications, these are created automatically
whenever a variablePanel is created.
Instances are responsible for tracking the mouse pointer and resize the
views (a panel) subviews as appropriate.

copyright
COPYRIGHT (c) 1995 by Claus Gittinger
             All Rights Reserved

This software is furnished under a license and may be used
only in accordance with the terms of that license and with the
inclusion of the above copyright notice.   This software may not
be provided or otherwise made available to, or used by, any
other person.  No title to or ownership of the software is
hereby transferred.

Instance protocol:

 forcedOpaqueResizing: aBoolean

can be set to false or true to force a mode.
If never set, it will be determined by a flag in the userSettings

 buttonMotion: state x: bx y: by

mouse-button was moved while pressed;
clear prev handleBar and draw handle bar at new position

 buttonPress: button x: bx y: by

button was pressed - setup resizing if a handle is hit

 buttonRelease: button x: bx y: by

end bar-move

 pointerEnter: state x: bx y: by

this could be sent by the KDE before a button press event;
test whether the state == 0

 pointerLeave: state

this could be sent by KDE before a button press event;
test whether the state == 0

 checkedHandleMovementX: bx y: by

check and return valid position a handle can be placed

 detectHandleIndexAt: x y: y

returns the handle index at position x@y or nil if none detected

 isSnapEntered

 isSnapEntered: anIndex

 isSnapPressed

 doInvertHandle

invert a handle

 doResize

perform the resize

 doSnapPressedX: x y: y

perform the snap press