edu.washington.cs.supple.render
Interface CostFunction

All Known Implementing Classes:

AbstractCostFunction

public interface CostFunction

Author:

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Method Summary

float	getAssignmentCost(Widget widget)
float	getHintCost(RenderingHint hint, float fit) Used by RenderingHintEnforcer to convert widget's fit returned by a rendering hint to actual cost
float	getShortcutCost(Shortcut shortcut) The signature for this method will probably change at some point; it computes the cost associated with a particular shortcut.
TransitionCount	getTransitionCountFunction() A transition count provides information on the usage of the container elements of a UI
void	setTransitionCountFunction(TransitionCount tc) A transition count provides information on the usage of the container elements of a UI

Method Detail

getAssignmentCost

public float getAssignmentCost(Widget widget)

Parameters:

widget - widget whose cost is to be analysed

Returns:

the cost of assigning this widget to its corresponding ui element; -1 if widget is not acceptable

getHintCost

public float getHintCost(RenderingHint hint,
                         float fit)

Used by RenderingHintEnforcer to convert widget's fit returned by a rendering hint to actual cost

Parameters:

fit - the fit (between 0.0 and 1.0

Returns:

the cost incurred by the widget based on its compliance with the hint

getShortcutCost

public float getShortcutCost(Shortcut shortcut)

The signature for this method will probably change at some point; it computes the cost associated with a particular shortcut. At the moment it assumes a fixed cost per access regardless of how the shortcut is rendered. This is clearly wrong but we will worry about it later

Parameters:

shortcut - shortcut to be evaluated

Returns:

the associated cost (which depends on how much traffic goes through the shortcut)

setTransitionCountFunction

public void setTransitionCountFunction(TransitionCount tc)

A transition count provides information on the usage of the container elements of a UI

Parameters:

tc - a transition count function

getTransitionCountFunction

public TransitionCount getTransitionCountFunction()

A transition count provides information on the usage of the container elements of a UI

Returns:

tc a transition count function