Module for managing images for scripting. More...

#include <ScreenImageMgr.hpp>

Public Slots
void	createScreenImage (const QString &id, const QString &filename, qreal x, qreal y, qreal scale=1., bool visible=true, qreal alpha=1., float fadeDuration=1.)
	Create an image from a file and display on the screen at x,y coordinates. More...

bool	getShowImage (const QString &id) const
	Find out if an image is currently visible. More...

void	showImage (const QString &id, bool show)
	Set an image's visible status. More...

int	getImageWidth (const QString &id) const

int	getImageHeight (const QString &id) const

void	setImageScale (const QString &id, qreal scaleX, qreal scaleY, float duration=0.)
	Set the x and y scale for the specified image, relative to size given at load time. More...

qreal	getImageScaleX (const QString &id) const

qreal	getImageScaleY (const QString &id) const

void	setImageAlpha (const QString &id, qreal alpha)
	Set an image's alpha value when visible. More...

void	setImageXY (const QString &id, qreal x, qreal y, float duration=0.)
	Set the x and y coordinates for the specified image. More...

void	addImageXY (const QString &id, qreal x, qreal y, float duration=0.)
	Add x and y coordinate offsets to the specified image. More...

void	deleteImage (const QString &id)
	Delete an image. More...

void	deleteAllImages (void)
	Delete all images currently managed by ScreenImageMgr.

QStringList	getAllImageIDs (void) const
	Get a list of currently loaded image IDs.

Public Member Functions
	ScreenImageMgr ()
	Construct a ScreenImageMgr object.

virtual void	init () Q_DECL_OVERRIDE
	Initialize itself. More...

virtual void	draw (StelCore *core) Q_DECL_OVERRIDE
	Execute all the drawing functions for this module. More...

virtual void	update (double deltaTime) Q_DECL_OVERRIDE
	Update time-dependent parts of the module.

virtual double	getCallOrder (StelModuleActionName actionName) const Q_DECL_OVERRIDE
	Defines the order in which the various modules are drawn.

Public Member Functions inherited from StelModule
	StelModule ()
	Constructor. Every derived class MUST call setObjectName(className) in its constructor.

virtual void	deinit ()
	Called before the module will be deleted, and before the OpenGL context is suppressed. More...

virtual QSettings *	getSettings ()
	Return module-specific settings. More...

virtual QString	getModuleVersion () const
	Get the version of the module, default is stellarium main version.

virtual QString	getAuthorName () const
	Get the name of the module author.

virtual QString	getAuthorEmail () const
	Get the email address of the module author.

virtual void	handleMouseClicks (class QMouseEvent *)
	Handle mouse clicks. More...

virtual void	handleMouseWheel (class QWheelEvent *)
	Handle mouse wheel. More...

virtual bool	handleMouseMoves (int x, int y, Qt::MouseButtons b)
	Handle mouse moves. More...

virtual void	handleKeys (class QKeyEvent *e)
	Handle key events. More...

virtual bool	handlePinch (qreal scale, bool started)
	Handle pinch gesture events. More...

virtual bool	configureGui (bool show=true)
	Detect or show the configuration GUI elements for the module. More...

Additional Inherited Members
Public Types inherited from StelModule
enum	StelModuleSelectAction { AddToSelection , ReplaceSelection , RemoveFromSelection }
	Enum used when selecting objects to define whether to add to, replace, or remove from the existing selection list. More...

enum	StelModuleActionName { ActionDraw , ActionUpdate , ActionHandleMouseClicks , ActionHandleMouseMoves , ActionHandleKeys }
	Define the possible action for which an order is defined. More...

Protected Member Functions inherited from StelModule
class StelAction *	addAction (const QString &id, const QString &groupId, const QString &text, QObject target, const char slot, const QString &shortcut="", const QString &altShortcut="")
	convenience methods to add an action (call to slot) to the StelActionMgr object. More...

class StelAction *	addAction (const QString &id, const QString &groupId, const QString &text, const char *slot, const QString &shortcut="", const QString &altShortcut="")
	convenience methods to add an action (call to own slot) to the StelActionMgr object. More...

StelAction *	addAction (const QString &id, const QString &groupId, const QString &text, QObject *contextObject, std::function< void()> lambda, const QString &shortcut="", const QString &altShortcut="")
	convenience methods to add an action (call to Lambda functor) to the StelActionMgr object. More...

Detailed Description

Module for managing images for scripting.

Images are identified by a string ID which is passed to ScreenImageMgr members when it is necessary to specify an image to work with. Member functions in this class which modify the state of the class are all mediated through the signal/slot mechanism to ensure such operations happen in the main thread where images are drawn, and not in the script thread.

Member Function Documentation

◆ addImageXY

void ScreenImageMgr::addImageXY	(	const QString &	id,
		qreal	x,
		qreal	y,
		float	duration = `0.`
	)

slot

Add x and y coordinate offsets to the specified image.

Parameters

id	the ID for the desired image.
x	The x-coordinate shift for the image, pixels.
y	The y-coordinate shift for the image, pixels.
duration	The time for the change to take place, in seconds.

◆ createScreenImage

void ScreenImageMgr::createScreenImage	(	const QString &	id,
		const QString &	filename,
		qreal	x,
		qreal	y,
		qreal	scale = `1.`,
		bool	visible = `true`,
		qreal	alpha = `1.`,
		float	fadeDuration = `1.`
	)

slot

Create an image from a file and display on the screen at x,y coordinates.

Parameters

id	the ID to use when referring to this image (an arbitrary string). If an image with this id exists already, it will be deleted first.
filename	the partial path of the file to load. This will be searched for using StelFileMgr, with "scripts/" prefixed to the filename.
x	The x-coordinate for the image (0 = left of screen)
y	The y-coordinate for the image (0 = top of screen)
scale	scale factor for the image. 1 = original size, 0.5 = 50% size etc.
visible	The initial visible state of the image
alpha	The initial alpha (opacity) value for the image (range 0.0=transparent to 1.0=opaque)
fadeDuration	the time it takes for screen images to fade in/out/change alpha in seconds.

◆ deleteImage

void ScreenImageMgr::deleteImage ( const QString & id )

slot

Delete an image.

Parameters

id	the ID for the desired image.

◆ draw()

virtual void ScreenImageMgr::draw ( StelCore * core )

virtual

Execute all the drawing functions for this module.

Parameters

core	the core to use for the drawing

Reimplemented from StelModule.

◆ getImageHeight

int ScreenImageMgr::getImageHeight ( const QString & id ) const

slot

Parameters

id	the ID for the desired image.

Returns: the currently scaled height in pixels.

◆ getImageScaleX

qreal ScreenImageMgr::getImageScaleX ( const QString & id ) const

slot

Parameters

id	the ID for the desired image.

Returns: current X scaling factor, relative to loaded size.

◆ getImageScaleY

qreal ScreenImageMgr::getImageScaleY ( const QString & id ) const

slot

Parameters

id	the ID for the desired image.

Returns: current Y scaling factor, relative to loaded size.

◆ getImageWidth

int ScreenImageMgr::getImageWidth ( const QString & id ) const

slot

Parameters

id	the ID for the desired image.

Returns: the currently scaled width, in pixels.

◆ getShowImage

bool ScreenImageMgr::getShowImage ( const QString & id ) const

slot

Find out if an image is currently visible.

Parameters

id	the ID for the desired image.

Returns: true if visible, false if not visible or not loaded.

◆ init()

virtual void ScreenImageMgr::init ( )

virtual

Initialize itself.

If the initialization takes significant time, the progress should be displayed on the loading bar.

Implements StelModule.

◆ setImageAlpha

void ScreenImageMgr::setImageAlpha	(	const QString &	id,
		qreal	alpha
	)

slot

Set an image's alpha value when visible.

Parameters

id	the ID for the desired image.
alpha	the new alpha value to set.

◆ setImageScale

void ScreenImageMgr::setImageScale	(	const QString &	id,
		qreal	scaleX,
		qreal	scaleY,
		float	duration = `0.`
	)

slot

Set the x and y scale for the specified image, relative to size given at load time.

Parameters

id	the ID for the desired image.
scaleX	The new x-scale for the image.
scaleY	The new y-scale for the image.
duration	The time for the change to take place, in seconds.

◆ setImageXY

void ScreenImageMgr::setImageXY	(	const QString &	id,
		qreal	x,
		qreal	y,
		float	duration = `0.`
	)

slot

Set the x and y coordinates for the specified image.

Parameters

id	the ID for the desired image.
x	The new x-coordinate for the image, pixels.
y	The new y-coordinate for the image, pixels.
duration	The time for the change to take place, in seconds.

◆ showImage

void ScreenImageMgr::showImage	(	const QString &	id,
		bool	show
	)

slot

Set an image's visible status.

Parameters

id	the ID for the desired image.
show	the new visible state to set.

Public Slots

Public Member Functions

Additional Inherited Members

Detailed Description

Member Function Documentation

◆ addImageXY

◆ createScreenImage

◆ deleteImage

◆ draw()

◆ getImageHeight

◆ getImageScaleX

◆ getImageScaleY

◆ getImageWidth

◆ getShowImage

◆ init()

◆ setImageAlpha

◆ setImageScale

◆ setImageXY

◆ showImage