FadedVisibility Class Reference

This class fades a widget in and out. More...

#include <FadedVisibility.h>

Inherits Animation.

Collaboration diagram for FadedVisibility:

[legend]

List of all members.

Classes
class	FadeThread
Public Member Functions
	FadedVisibility (XMLNode *xml)
void	animate (MenuObject *obj)
void	unanimate (MenuObject *obj)
Private Attributes
float	transparencyChangeSpeed

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Detailed Description

This class fades a widget in and out.

This animation changes the visibility of a widget. The visibility is slowly modified by increasing or decreasing the tranparency.

The method animate( MenuObject *obj ) makes a widget visible. The method unanimate( MenuObject *obj) makes a widget invisible.

This animation uses a continuously transparency change, which is simulated by many very small steps. This cannot be done directly in this class, because the animate( MenuObject *obj ) and unanimate( MenuObject *obj ) methods have to return very quickly. So instead of animating the widget, a new object is created, which uses QueuedThread as superclass. This new object is put into the ThreadQueue -class, which performs the animation in an own thread. The ThreadQueue -class deletes this object automatically, when the animation has finished.

Date:

18th of May 2007

Author:

Thomas Weberndorfer

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Constructor & Destructor Documentation

FadedVisibility::FadedVisibility

(

XMLNode *

xml

)

The constructor loads the animation-parameters from the XML-file

Parameters:

xml

This object has to focus on the corrent XML-node.

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Member Function Documentation

void FadedVisibility::animate

(

MenuObject *

obj

)

[virtual]

This method creats an object, which performs the animation.

Parameters:

obj

This is the widget, which will become visible.

Implements Animation.

void FadedVisibility::unanimate

(

MenuObject *

obj

)

[virtual]

This method creats an object, which cancels the animation-effects.

Parameters:

obj

This is the widget, which will become invisible.

Implements Animation.

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Member Data Documentation

float FadedVisibility::transparencyChangeSpeed [private]

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The documentation for this class was generated from the following files:

• tools/libraries/3DMenu/libAnimations/FadedVisibility.h
• tools/libraries/3DMenu/libAnimations/FadedVisibility.cpp