ScreenImage Class Reference

List of all members.

Public Member Functions
	ScreenImage (const QString &filename, float x, float y, bool show=false, float scale=1., float alpha=1., float fadeDuration=1.)
	Load an image.
virtual bool	draw (const StelCore *core)
	Draw the image.
virtual void	update (double deltaTime)
	update fade for on/off action
virtual void	setFadeDuration (float duration)
	Set the duration used for the fade in / fade out of the image.
virtual void	setFlagShow (bool b)
	Show or hide the image (it will fade in/out).
virtual bool	getFlagShow (void)
	Get the displayed status of the image.
virtual void	setAlpha (float a)
	Set the image alpha for when it is in full "on" (after fade in).
virtual void	setXY (float x, float y, float duration=0.)
	Set the x, y position of the image.
virtual void	addXY (float x, float y, float duration=0.)
	Set the x, y position of the image relative to the current position.
virtual int	imageHeight (void)
virtual int	imageWidth (void)
Protected Attributes
QGraphicsPixmapItem *	tex
QTimeLine *	moveTimer
QTimeLine *	fadeTimer
QGraphicsItemAnimation *	anim

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Constructor & Destructor Documentation

ScreenImage::ScreenImage	(	const QString &	filename,
		float	x,
		float	y,
		bool	show = false,
		float	scale = 1.,
		float	alpha = 1.,
		float	fadeDuration = 1.
	)

Load an image.

Parameters:

	filename	the partial path of the file to load. This will be searched for in the scripts directory using StelFileMgr.
	x	the screen x-position for the texture (in pixels), measured from the left side of the screen.
	y	the screen x-position for the texture (in pixels), measured from the bottom of the screen.
	show	the initial displayed status of the image (false == hidden).
	scale	scale factor for the image. 1 = original size, 0.5 = 50% size etc.
	fadeDuration	the time it takes for screen images to fade in/out/change alpha in seconds.

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Member Function Documentation

virtual void ScreenImage::addXY	(	float	x,
		float	y,
		float	duration = 0.
	)			[virtual]

Set the x, y position of the image relative to the current position.

Parameters:

	x	the offset in the x-axis
	y	the offset in the y-axis
	duration	how long for the movement to take in seconds

virtual bool ScreenImage::draw

(

const StelCore *

core

)

[virtual]

Draw the image.

Parameters:

core

the StelCore object

virtual bool ScreenImage::getFlagShow

(

void

)

[virtual]

Get the displayed status of the image.

virtual void ScreenImage::setAlpha

(

float

a

)

[virtual]

Set the image alpha for when it is in full "on" (after fade in).

Parameters:

	a	the new alpha (transparency) for the image. 1.0 = totally transparent, 0.0 = fully opaque.
	duration	the time for the change in alpha to take effect.

virtual void ScreenImage::setFadeDuration

(

float

duration

)

[virtual]

Set the duration used for the fade in / fade out of the image.

virtual void ScreenImage::setFlagShow

(

bool

b

)

[virtual]

Show or hide the image (it will fade in/out).

Parameters:

b

if true, the image will be shown, else it will be hidden

virtual void ScreenImage::setXY	(	float	x,
		float	y,
		float	duration = 0.
	)			[virtual]

Set the x, y position of the image.

Parameters:

	x	new x position
	y	new y position
	duration	how long for the movement to take in seconds

virtual void ScreenImage::update

(

double

deltaTime

)

[virtual]

update fade for on/off action