BeMDI SDK -- CZOrderedView

CZOrderedView

This view maintains a z-order.

Members

Above		Returns the view above this one.
ApplyClippingRegion		Applies a new clipping region.
AttachedToWindow		BeOS hook function
Below		Returns the view beneath this one.
CZOrderedView		Constructor
ClippingRegion		Returns the clipping region for this view.
FrameMoved		BeOS hook function
FrameResized		BeOS hook function
ObscuredRegion		Returns the region of this view, which is obscured by other views.
RedrawBelow		Returns true, if the views beneath must be redrawn.
RemoveFromZOrder		Removes the view from the z-order.
ScreenRect		Returns the cached screen retangle.
SetAboveView		Sets the view above this one.
SetBelowView		Sets the view beneath this one.
UpdateScreenRect		Updates the cached screen rectangle.
above		The view above this one.
below		The view beneath this one.
screenRect		Position of this view in screen coordinates.
~CZOrderedView		Destructor

Remarks

Normal views don't maintain a z-order. But this class contains two pointers: one to the view above and another to the one below this view. This double-linked list defines the z-order of the views.

Views of this class should only be used inside a CZOrderedViewManager. The ZOrderedViewManager uses the double linked list to calculate the correct clipping for the views inside it.

It's very slow to convert the bounds rectangle from view to screen coordinates. But this operation is very common during the calculation of the clipping region. Therefore this class caches its screen rectangle.

Details

Last modified	Sun Sep 2 20:42:22 2001
Derived from	BView
Declared in	ZOrderedView.h

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