Constant Mode Frame

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Until now we have discussed the IlvDefaultManagerFrame. ILOG JViews also supplies the IlvConstantModeManagerFrame, a manager frame that handles the resize event automatically when a user reshapes a submanager. IlvConstantModeManagerFrame keeps the zoom level of the submanager unchanged by adjusting the frame margins to meet the required size.

• Margins are never negative.
• A minimum margin size can be set.
• The default margin size is 0.
• The submanager can only be translated.
• The frame reacts to the IlvManager.moveResize() method but not IlvManager.applyTransform(). Call IlvManager.applyTransform() to apply a specific transformation only.
• While reshaping the submanager by dragging a handle, the margin next to the handle is adjusted first. If this margin is reduced to zero, the margin on the other side of the frame is adjusted.
• When both left and right margins of a IlvConstantModeManagerFrame object become zero, the submanager stops the reshape operation.
• IlvConstantModeManagerFrame objects listens for submanager or grapher content changes. When the bounding box of the submanager grows, in order to keep the global bounding box constant the frame first tries to reduce margins.

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