Abstract definition of a 2D element to be displayed in an Overlay. More...

#include <OgreOverlayElement.h>

Inheritance diagram for Ogre::OverlayElement:

Public Types
typedef SharedPtr< RenderSystemData >	RenderSystemDataPtr

Public Member Functions
	OverlayElement (const String &name)
	Constructor: do not call direct, use OverlayManager::createElement. More...

virtual	~OverlayElement ()

virtual void	_getClippingRegion (RealRect &clippingRegion)
	Gets the clipping region of the element. More...

virtual Real	_getDerivedLeft (void)
	Gets the 'left' position as derived from own left and that of parents. More...

virtual Real	_getDerivedTop (void)
	Gets the 'top' position as derived from own left and that of parents. More...

Real	_getHeight (void) const
	Gets the height of this element in relation to the screen (where 1.0 = screen height) More...

Real	_getLeft (void) const
	Gets the left of this element in relation to the screen (where 0 = far left, 1.0 = far right) More...

virtual Real	_getRelativeHeight (void)
	Gets the 'height' as derived from own height and metrics mode. More...

virtual Real	_getRelativeWidth (void)
	Gets the 'width' as derived from own width and metrics mode. More...

Real	_getTop (void) const
	Gets the top of this element in relation to the screen (where 0 = far left, 1.0 = far right) More...

Real	_getWidth (void) const
	Gets the width of this element in relation to the screen (where 1.0 = screen width) More...

virtual void	_notifyParent (OverlayContainer parent, Overlay overlay)
	Internal method for notifying the GUI element of it's parent and ultimate overlay. More...

virtual void	_notifyViewport ()
	Internal method to notify the element when the viewport of parent overlay has changed. More...

virtual void	_notifyWorldTransforms (const Matrix4 &xform)
	Internal method to notify the element when it's world transform of parent overlay has changed. More...

virtual ushort	_notifyZOrder (ushort newZOrder)
	Internal method to notify the element when Z-order of parent overlay has changed. More...

virtual void	_positionsOutOfDate (void)
	Tell the object to recalculate. More...

virtual void	_releaseManualHardwareResources ()
	Notifies that hardware resources were lost. More...

virtual void	_restoreManualHardwareResources ()
	Notifies that hardware resources should be restored. More...

void	_setDimensions (Real width, Real height)
	Sets the width and height of this element in relation to the screen (where 1.0 = screen width) More...

void	_setHeight (Real height)
	Sets the height of this element in relation to the screen (where 1.0 = screen width) More...

void	_setLeft (Real left)
	Sets the left of this element in relation to the screen (where 1.0 = screen width) More...

void	_setParent (OverlayContainer *parent)

void	_setPosition (Real left, Real top)
	Sets the left and top of this element in relation to the screen (where 1.0 = screen width) More...

void	_setTop (Real top)
	Sets the top of this element in relation to the screen (where 1.0 = screen width) More...

void	_setWidth (Real width)
	Sets the width of this element in relation to the screen (where 1.0 = screen width) More...

virtual void	_update (void)
	Internal method to update the element based on transforms applied. More...

virtual void	_updateCustomGpuParameter (const GpuProgramParameters::AutoConstantEntry &constantEntry, GpuProgramParameters *params) const
	Update a custom GpuProgramParameters constant which is derived from information only this Renderable knows. More...

virtual void	_updateFromParent (void)
	Updates this elements transform based on it's parent. More...

virtual void	_updateRenderQueue (RenderQueue *queue)
	Internal method to put the contents onto the render queue. More...

virtual OverlayElement *	clone (const String &instanceName)

virtual bool	contains (Real x, Real y) const
	Returns true if xy is within the constraints of the component. More...

virtual void	copyFromTemplate (OverlayElement *templateOverlay)

void	copyParametersTo (StringInterface *dest) const
	Method for copying this object's parameters to another object. More...

virtual OverlayElement *	findElementAt (Real x, Real y)
	Returns true if xy is within the constraints of the component. More...

virtual const DisplayString &	getCaption (void) const
	Gets the caption for this element. More...

virtual bool	getCastsShadows (void) const
	Method which reports whether this renderable would normally cast a shadow. More...

virtual const ColourValue &	getColour (void) const
	Gets the colour for this element. More...

const Vector4 &	getCustomParameter (size_t index) const
	Gets the custom value associated with this Renderable at the given index. More...

Real	getHeight (void) const
	Gets the height of this element in relation to the screen (where 1.0 = screen height) More...

virtual GuiHorizontalAlignment	getHorizontalAlignment (void) const
	Gets the horizontal alignment for this element. More...

Real	getLeft (void) const
	Gets the left of this element in relation to the screen (where 0 = far left, 1.0 = far right) More...

const LightList &	getLights (void) const
	Gets a list of lights, ordered relative to how close they are to this renderable. More...

const MaterialPtr &	getMaterial (void) const
	See Renderable. More...

virtual const String &	getMaterialName (void) const
	Gets the name of the material this element uses. More...

virtual GuiMetricsMode	getMetricsMode (void) const
	Retrieves the current settings of how the element metrics are interpreted. More...

const String &	getName (void) const
	Gets the name of this overlay. More...

virtual unsigned short	getNumWorldTransforms (void) const
	Returns the number of world transform matrices this renderable requires. More...

ParamDictionary *	getParamDictionary (void)
	Retrieves the parameter dictionary for this class. More...

const ParamDictionary *	getParamDictionary (void) const

String	getParameter (const String &name) const
	Generic parameter retrieval method. More...

const ParameterList &	getParameters (void) const
	Retrieves a list of parameters valid for this object. More...

OverlayContainer *	getParent ()
	Returns the parent container. More...

bool	getPolygonModeOverrideable (void) const
	Gets whether this renderable's chosen detail level can be overridden (downgraded) by the camera setting. More...

virtual void	getRenderOperation (RenderOperation &op)=0
	Gets the render operation required to send this object to the frame buffer. More...

const RenderSystemDataPtr &	getRenderSystemData () const
	Gets RenderSystem private data. More...

const OverlayElement *	getSourceTemplate () const
	Returns the SourceTemplate for this element. More...

Real	getSquaredViewDepth (const Camera *cam) const
	Overridden from Renderable. More...

virtual Technique *	getTechnique (void) const
	Retrieves a pointer to the Material Technique this renderable object uses. More...

Real	getTop (void) const
	Gets the top of this element in relation to the screen (where 0 = top, 1.0 = bottom) More...

virtual const String &	getTypeName (void) const =0
	Gets the type name of the element. More...

bool	getUseIdentityProjection (void) const
	Returns whether or not to use an 'identity' projection. More...

bool	getUseIdentityView (void) const
	Returns whether or not to use an 'identity' view. More...

const Any &	getUserAny (void) const

UserObjectBindings &	getUserObjectBindings ()
	Return an instance of user objects binding associated with this class. More...

const UserObjectBindings &	getUserObjectBindings () const
	Return an instance of user objects binding associated with this class. More...

virtual GuiVerticalAlignment	getVerticalAlignment (void) const
	Gets the vertical alignment for this element. More...

Real	getWidth (void) const
	Gets the width of this element in relation to the screen (where 1.0 = screen width) More...

void	getWorldTransforms (Matrix4 *xform) const
	See Renderable. More...

ushort	getZOrder () const
	Returns the zOrder of the element. More...

bool	hasCustomParameter (size_t index) const
	Checks whether a custom value is associated with this Renderable at the given index. More...

virtual void	hide (void)
	Hides this element if it was visible. More...

virtual void	initialise (void)=0
	Initialise gui element. More...

virtual bool	isCloneable () const

virtual bool	isContainer () const
	returns false as this class is not a container type More...

bool	isEnabled () const

virtual bool	isKeyEnabled () const

bool	isVisible (void) const
	Returns whether or not the element is visible. More...

virtual void	postRender (SceneManager sm, RenderSystem rsys)
	Called immediately after the Renderable has been rendered. More...

virtual bool	preRender (SceneManager sm, RenderSystem rsys)
	Called just prior to the Renderable being rendered. More...

void	removeCustomParameter (size_t index)
	Removes a custom value which is associated with this Renderable at the given index. More...

virtual void	setCaption (const DisplayString &text)
	Sets the caption on elements that support it. More...

virtual void	setCloneable (bool c)

virtual void	setColour (const ColourValue &col)
	Sets the colour on elements that support it. More...

void	setCustomParameter (size_t index, const Vector4 &value)
	Sets a custom parameter for this Renderable, which may be used to drive calculations for this specific Renderable, like GPU program parameters. More...

void	setDimensions (Real width, Real height)
	Sets the dimensions of this element in relation to the screen (1.0 = screen width/height). More...

virtual void	setEnabled (bool b)

void	setHeight (Real height)
	Sets the height of this element in relation to the screen (where 1.0 = screen height) More...

virtual void	setHorizontalAlignment (GuiHorizontalAlignment gha)
	Sets the horizontal origin for this element. More...

void	setLeft (Real left)
	Sets the left of this element in relation to the screen (where 0 = far left, 1.0 = far right) More...

void	setMaterial (const MaterialPtr &mat)
	Sets the the material this element will use. More...

void	setMaterialName (const String &matName, const String &group=DEFAULT_RESOURCE_GROUP)

virtual void	setMetricsMode (GuiMetricsMode gmm)
	Tells this element how to interpret the position and dimension values it is given. More...

bool	setParameter (const String &name, const String &value)
	Generic parameter setting method. More...

void	setParameterList (const NameValuePairList &paramList)
	Generic multiple parameter setting method. More...

void	setPolygonModeOverrideable (bool override)
	Sets whether this renderable's chosen detail level can be overridden (downgraded) by the camera setting. More...

void	setPosition (Real left, Real top)
	Sets the position of the top-left corner of the element, relative to the screen size (1.0 = screen width / height) More...

void	setRenderSystemData (RenderSystemDataPtr val) const
	Sets RenderSystem private data. More...

void	setTop (Real Top)
	Sets the top of this element in relation to the screen (where 0 = top, 1.0 = bottom) More...

void	setUseIdentityProjection (bool useIdentityProjection)
	Sets whether or not to use an 'identity' projection. More...

void	setUseIdentityView (bool useIdentityView)
	Sets whether or not to use an 'identity' view. More...

void	setUserAny (const Any &anything)

virtual void	setVerticalAlignment (GuiVerticalAlignment gva)
	Sets the vertical origin for this element. More...

void	setWidth (Real width)
	Sets the width of this element in relation to the screen (where 1.0 = screen width) More...

virtual void	show (void)
	Shows this element if it was hidden. More...

void	visitRenderables (Renderable::Visitor *visitor, bool debugRenderables=false)
	Method to allow a caller to abstractly iterate over the Renderable instances that this MovableObject will add to the render queue when asked, if any. More...

Static Public Member Functions
static void	cleanupDictionary ()
	Cleans up the static 'msDictionary' required to reset Ogre, otherwise the containers are left with invalid pointers, which will lead to a crash as soon as one of the ResourceManager implementers (e.g. More...

Static Public Attributes
static const String &	DEFAULT_RESOURCE_GROUP

Detailed Description

Abstract definition of a 2D element to be displayed in an Overlay.

Remarks: This class abstracts all the details of a 2D element which will appear in an overlay. In fact, not all OverlayElement instances can be directly added to an Overlay, only those which are OverlayContainer instances (a subclass of this class). OverlayContainer objects can contain any OverlayElement however. This is just to enforce some level of grouping on widgets.

: OverlayElements should be managed using OverlayManager. This class is responsible for instantiating / deleting elements, and also for accepting new types of element from plugins etc.

: Note that positions / dimensions of 2D screen elements are expressed as parametric values (0.0 - 1.0) because this makes them resolution-independent. However, most screen resolutions have an aspect ratio of 1.3333:1 (width : height) so note that in physical pixels 0.5 is wider than it is tall, so a 0.5x0.5 panel will not be square on the screen (but it will take up exactly half the screen in both dimensions).

: Because this class is designed to be extensible, it subclasses from StringInterface so its parameters can be set in a generic way.

Member Typedef Documentation

◆ RenderSystemDataPtr

typedef SharedPtr<RenderSystemData> Ogre::Renderable::RenderSystemDataPtr

inherited

Constructor & Destructor Documentation

◆ OverlayElement()

Ogre::OverlayElement::OverlayElement ( const String & name )

Constructor: do not call direct, use OverlayManager::createElement.

◆ ~OverlayElement()

virtual Ogre::OverlayElement::~OverlayElement ( )

virtual

Member Function Documentation

◆ initialise()

virtual void Ogre::OverlayElement::initialise ( void )

pure virtual

Initialise gui element.

Implemented in Ogre::OverlayContainer, Ogre::PanelOverlayElement, Ogre::BorderPanelOverlayElement, and Ogre::TextAreaOverlayElement.

◆ _releaseManualHardwareResources()

virtual void Ogre::OverlayElement::_releaseManualHardwareResources ( )

inlinevirtual

Notifies that hardware resources were lost.

Reimplemented in Ogre::PanelOverlayElement, Ogre::BorderPanelOverlayElement, and Ogre::TextAreaOverlayElement.

◆ _restoreManualHardwareResources()

virtual void Ogre::OverlayElement::_restoreManualHardwareResources ( )

inlinevirtual

Notifies that hardware resources should be restored.

Reimplemented in Ogre::PanelOverlayElement, Ogre::BorderPanelOverlayElement, and Ogre::TextAreaOverlayElement.

◆ getName()

const String& Ogre::OverlayElement::getName ( void ) const

Gets the name of this overlay.

Referenced by Ogre::OverlayContainer::_removeChild().

◆ show()

virtual void Ogre::OverlayElement::show ( void )

virtual

Shows this element if it was hidden.

◆ hide()

virtual void Ogre::OverlayElement::hide ( void )

virtual

Hides this element if it was visible.

◆ isVisible()

bool Ogre::OverlayElement::isVisible ( void ) const

Returns whether or not the element is visible.

◆ isEnabled()

bool Ogre::OverlayElement::isEnabled ( ) const

◆ setEnabled()

virtual void Ogre::OverlayElement::setEnabled ( bool b )

virtual

◆ setDimensions()

void Ogre::OverlayElement::setDimensions	(	Real	width,
		Real	height
	)

Sets the dimensions of this element in relation to the screen (1.0 = screen width/height).

◆ setPosition()

void Ogre::OverlayElement::setPosition	(	Real	left,
		Real	top
	)

Sets the position of the top-left corner of the element, relative to the screen size (1.0 = screen width / height)

◆ setWidth()

void Ogre::OverlayElement::setWidth ( Real width )

Sets the width of this element in relation to the screen (where 1.0 = screen width)

◆ getWidth()

Real Ogre::OverlayElement::getWidth ( void ) const

Gets the width of this element in relation to the screen (where 1.0 = screen width)

◆ setHeight()

void Ogre::OverlayElement::setHeight ( Real height )

Sets the height of this element in relation to the screen (where 1.0 = screen height)

◆ getHeight()

Real Ogre::OverlayElement::getHeight ( void ) const

Gets the height of this element in relation to the screen (where 1.0 = screen height)

◆ setLeft()

void Ogre::OverlayElement::setLeft ( Real left )

Sets the left of this element in relation to the screen (where 0 = far left, 1.0 = far right)

◆ getLeft()

Real Ogre::OverlayElement::getLeft ( void ) const

Gets the left of this element in relation to the screen (where 0 = far left, 1.0 = far right)

◆ setTop()

void Ogre::OverlayElement::setTop ( Real Top )

Sets the top of this element in relation to the screen (where 0 = top, 1.0 = bottom)

◆ getTop()

Real Ogre::OverlayElement::getTop ( void ) const

Gets the top of this element in relation to the screen (where 0 = top, 1.0 = bottom)

◆ _getLeft()

Real Ogre::OverlayElement::_getLeft ( void ) const

inline

Gets the left of this element in relation to the screen (where 0 = far left, 1.0 = far right)

◆ _getTop()

Real Ogre::OverlayElement::_getTop ( void ) const

inline

Gets the top of this element in relation to the screen (where 0 = far left, 1.0 = far right)

◆ _getWidth()

Real Ogre::OverlayElement::_getWidth ( void ) const

inline

Gets the width of this element in relation to the screen (where 1.0 = screen width)

◆ _getHeight()

Real Ogre::OverlayElement::_getHeight ( void ) const

inline

Gets the height of this element in relation to the screen (where 1.0 = screen height)

◆ _setLeft()

void Ogre::OverlayElement::_setLeft ( Real left )

Sets the left of this element in relation to the screen (where 1.0 = screen width)

◆ _setTop()

void Ogre::OverlayElement::_setTop ( Real top )

Sets the top of this element in relation to the screen (where 1.0 = screen width)

◆ _setWidth()

void Ogre::OverlayElement::_setWidth ( Real width )

Sets the width of this element in relation to the screen (where 1.0 = screen width)

◆ _setHeight()

void Ogre::OverlayElement::_setHeight ( Real height )

Sets the height of this element in relation to the screen (where 1.0 = screen width)

◆ _setPosition()

void Ogre::OverlayElement::_setPosition	(	Real	left,
		Real	top
	)

Sets the left and top of this element in relation to the screen (where 1.0 = screen width)

◆ _setDimensions()

void Ogre::OverlayElement::_setDimensions	(	Real	width,
		Real	height
	)

Sets the width and height of this element in relation to the screen (where 1.0 = screen width)

◆ getMaterialName()

virtual const String& Ogre::OverlayElement::getMaterialName ( void ) const

virtual

Gets the name of the material this element uses.

◆ setMaterial()

void Ogre::OverlayElement::setMaterial ( const MaterialPtr & mat )

Sets the the material this element will use.

Remarks: Different elements will use different materials. One constant about them all though is that a Material used for a OverlayElement must have it's depth checking set to 'off', which means it always gets rendered on top. OGRE will set this flag for you if necessary. What it does mean though is that you should not use the same Material for rendering OverlayElements as standard scene objects. It's fine to use the same textures, just not the same Material.

◆ setMaterialName()

void Ogre::OverlayElement::setMaterialName	(	const String &	matName,
		const String &	group = `DEFAULT_RESOURCE_GROUP`
	)

This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.

◆ getMaterial()

const MaterialPtr& Ogre::OverlayElement::getMaterial ( void ) const

virtual

See Renderable.

Implements Ogre::Renderable.

Reimplemented in Ogre::TextAreaOverlayElement.

◆ getWorldTransforms()

void Ogre::OverlayElement::getWorldTransforms ( Matrix4 * xform ) const

virtual

See Renderable.

Implements Ogre::Renderable.

Referenced by Ogre::BorderRenderable::getWorldTransforms().

◆ _positionsOutOfDate()

virtual void Ogre::OverlayElement::_positionsOutOfDate ( void )

virtual

Tell the object to recalculate.

Reimplemented in Ogre::OverlayContainer.

◆ _update()

virtual void Ogre::OverlayElement::_update ( void )

virtual

Internal method to update the element based on transforms applied.

Reimplemented in Ogre::BorderPanelOverlayElement, Ogre::TextAreaOverlayElement, and Ogre::OverlayContainer.

◆ _updateFromParent()

virtual void Ogre::OverlayElement::_updateFromParent ( void )

virtual

Updates this elements transform based on it's parent.

◆ _notifyParent()

virtual void Ogre::OverlayElement::_notifyParent	(	OverlayContainer *	parent,
		Overlay *	overlay
	)

virtual

Internal method for notifying the GUI element of it's parent and ultimate overlay.

Reimplemented in Ogre::OverlayContainer.

◆ _getDerivedLeft()

virtual Real Ogre::OverlayElement::_getDerivedLeft ( void )

virtual

Gets the 'left' position as derived from own left and that of parents.

◆ _getDerivedTop()

virtual Real Ogre::OverlayElement::_getDerivedTop ( void )

virtual

Gets the 'top' position as derived from own left and that of parents.

◆ _getRelativeWidth()

virtual Real Ogre::OverlayElement::_getRelativeWidth ( void )

virtual

Gets the 'width' as derived from own width and metrics mode.

◆ _getRelativeHeight()

virtual Real Ogre::OverlayElement::_getRelativeHeight ( void )

virtual

Gets the 'height' as derived from own height and metrics mode.

◆ _getClippingRegion()

virtual void Ogre::OverlayElement::_getClippingRegion ( RealRect & clippingRegion )

virtual

Gets the clipping region of the element.

◆ _notifyZOrder()

virtual ushort Ogre::OverlayElement::_notifyZOrder ( ushort newZOrder )

virtual

Internal method to notify the element when Z-order of parent overlay has changed.

Remarks: Overlays have explicit Z-orders. OverlayElements do not, they inherit the Z-order of the overlay, and the Z-order is incremented for every container nested within this to ensure that containers are displayed behind contained items. This method is used internally to notify the element of a change in final Z-order which is used to render the element.

Returns: Return the next Z-ordering number available. For single elements, this is simply 'newZOrder + 1', except for containers. They increment it once for each child (or even more if those children are also containers with their own elements).

Reimplemented in Ogre::OverlayContainer.

◆ _notifyWorldTransforms()

virtual void Ogre::OverlayElement::_notifyWorldTransforms ( const Matrix4 & xform )

virtual

Internal method to notify the element when it's world transform of parent overlay has changed.

Reimplemented in Ogre::OverlayContainer.

◆ _notifyViewport()

virtual void Ogre::OverlayElement::_notifyViewport ( )

virtual

Internal method to notify the element when the viewport of parent overlay has changed.

Reimplemented in Ogre::OverlayContainer.

◆ _updateRenderQueue()

virtual void Ogre::OverlayElement::_updateRenderQueue ( RenderQueue * queue )

virtual

Internal method to put the contents onto the render queue.

Reimplemented in Ogre::BorderPanelOverlayElement, Ogre::OverlayContainer, and Ogre::PanelOverlayElement.

◆ visitRenderables()

void Ogre::OverlayElement::visitRenderables	(	Renderable::Visitor *	visitor,
		bool	debugRenderables = `false`
	)

Method to allow a caller to abstractly iterate over the Renderable instances that this MovableObject will add to the render queue when asked, if any.

Parameters

visitor	Pointer to a class implementing the Renderable::Visitor interface which will be called back for each Renderable which will be queued. Bear in mind that the state of the Renderable instances may not be finalised depending on when you call this.
debugRenderables	If false, only regular renderables will be visited (those for normal display). If true, debug renderables will be included too.

◆ getTypeName()

virtual const String& Ogre::OverlayElement::getTypeName ( void ) const

pure virtual

Gets the type name of the element.

All concrete subclasses must implement this.

Implemented in Ogre::PanelOverlayElement, Ogre::TextAreaOverlayElement, and Ogre::BorderPanelOverlayElement.

◆ setCaption()

virtual void Ogre::OverlayElement::setCaption ( const DisplayString & text )

virtual

Sets the caption on elements that support it.

Remarks: This property doesn't do something on all elements, just those that support it. However, being a common requirement it is in the top-level interface to avoid having to set it via the StringInterface all the time.

Reimplemented in Ogre::TextAreaOverlayElement.

◆ getCaption()

virtual const DisplayString& Ogre::OverlayElement::getCaption ( void ) const

virtual

Gets the caption for this element.

◆ setColour()

virtual void Ogre::OverlayElement::setColour ( const ColourValue & col )

virtual

Sets the colour on elements that support it.

Remarks: This property doesn't do something on all elements, just those that support it. However, being a common requirement it is in the top-level interface to avoid having to set it via the StringInterface all the time.

Reimplemented in Ogre::TextAreaOverlayElement.

◆ getColour()

virtual const ColourValue& Ogre::OverlayElement::getColour ( void ) const

virtual

Gets the colour for this element.

Reimplemented in Ogre::TextAreaOverlayElement.

◆ setMetricsMode()

virtual void Ogre::OverlayElement::setMetricsMode ( GuiMetricsMode gmm )

virtual

Tells this element how to interpret the position and dimension values it is given.

Remarks: By default, OverlayElements are positioned and sized according to relative dimensions of the screen. This is to ensure portability between different resolutions when you want things to be positioned and sized the same way across all resolutions. However, sometimes you want things to be sized according to fixed pixels. In order to do this, you can call this method with the parameter GMM_PIXELS. Note that if you then want to place your element relative to the center, right or bottom of it's parent, you will need to use the setHorizontalAlignment and setVerticalAlignment methods.

Reimplemented in Ogre::BorderPanelOverlayElement, and Ogre::TextAreaOverlayElement.

◆ getMetricsMode()

virtual GuiMetricsMode Ogre::OverlayElement::getMetricsMode ( void ) const

virtual

Retrieves the current settings of how the element metrics are interpreted.

◆ setHorizontalAlignment()

virtual void Ogre::OverlayElement::setHorizontalAlignment ( GuiHorizontalAlignment gha )

virtual

Sets the horizontal origin for this element.

Remarks: By default, the horizontal origin for a OverlayElement is the left edge of the parent container (or the screen if this is a root element). You can alter this by calling this method, which is especially useful when you want to use pixel-based metrics (see setMetricsMode) since in this mode you can't use relative positioning.

: For example, if you were using GMM_PIXELS metrics mode, and you wanted to place a 30x30 pixel crosshair in the center of the screen, you would use GHA_CENTER with a 'left' property of -15.

: Note that neither GHA_CENTER or GHA_RIGHT alter the position of the element based on it's width, you have to alter the 'left' to a negative number to do that; all this does is establish the origin. This is because this way you can align multiple things in the center and right with different 'left' offsets for maximum flexibility.

◆ getHorizontalAlignment()

virtual GuiHorizontalAlignment Ogre::OverlayElement::getHorizontalAlignment ( void ) const

virtual

Gets the horizontal alignment for this element.

◆ setVerticalAlignment()

virtual void Ogre::OverlayElement::setVerticalAlignment ( GuiVerticalAlignment gva )

virtual

Sets the vertical origin for this element.

Remarks: By default, the vertical origin for a OverlayElement is the top edge of the parent container (or the screen if this is a root element). You can alter this by calling this method, which is especially useful when you want to use pixel-based metrics (see setMetricsMode) since in this mode you can't use relative positioning.

: For example, if you were using GMM_PIXELS metrics mode, and you wanted to place a 30x30 pixel crosshair in the center of the screen, you would use GHA_CENTER with a 'top' property of -15.

: Note that neither GVA_CENTER or GVA_BOTTOM alter the position of the element based on it's height, you have to alter the 'top' to a negative number to do that; all this does is establish the origin. This is because this way you can align multiple things in the center and bottom with different 'top' offsets for maximum flexibility.

◆ getVerticalAlignment()

virtual GuiVerticalAlignment Ogre::OverlayElement::getVerticalAlignment ( void ) const

virtual

Gets the vertical alignment for this element.

◆ contains()

virtual bool Ogre::OverlayElement::contains	(	Real	x,
		Real	y
	)		const

virtual

Returns true if xy is within the constraints of the component.

◆ findElementAt()

virtual OverlayElement* Ogre::OverlayElement::findElementAt	(	Real	x,
		Real	y
	)

virtual

Returns true if xy is within the constraints of the component.

Reimplemented in Ogre::OverlayContainer.

◆ isContainer()

virtual bool Ogre::OverlayElement::isContainer ( ) const

inlinevirtual

returns false as this class is not a container type

Reimplemented in Ogre::OverlayContainer.

◆ isKeyEnabled()

virtual bool Ogre::OverlayElement::isKeyEnabled ( ) const

inlinevirtual

◆ isCloneable()

virtual bool Ogre::OverlayElement::isCloneable ( ) const

inlinevirtual

◆ setCloneable()

virtual void Ogre::OverlayElement::setCloneable ( bool c )

inlinevirtual

◆ getParent()

OverlayContainer* Ogre::OverlayElement::getParent ( )

Returns the parent container.

◆ _setParent()

void Ogre::OverlayElement::_setParent ( OverlayContainer * parent )

inline

◆ getZOrder()

ushort Ogre::OverlayElement::getZOrder ( ) const

inline

Returns the zOrder of the element.

◆ getSquaredViewDepth()

Real Ogre::OverlayElement::getSquaredViewDepth ( const Camera * cam ) const

inlinevirtual

Overridden from Renderable.

Implements Ogre::Renderable.

Referenced by Ogre::BorderRenderable::getSquaredViewDepth().

◆ getLights()

const LightList& Ogre::OverlayElement::getLights ( void ) const

inlinevirtual

Gets a list of lights, ordered relative to how close they are to this renderable.

Remarks: Directional lights, which have no position, will always be first on this list.

Implements Ogre::Renderable.

◆ copyFromTemplate()

virtual void Ogre::OverlayElement::copyFromTemplate ( OverlayElement * templateOverlay )

virtual

Reimplemented in Ogre::OverlayContainer.

◆ clone()

virtual OverlayElement* Ogre::OverlayElement::clone ( const String & instanceName )

virtual

Reimplemented in Ogre::OverlayContainer.

◆ getSourceTemplate()

const OverlayElement* Ogre::OverlayElement::getSourceTemplate ( ) const

inline

Returns the SourceTemplate for this element.

◆ getParamDictionary() [1/2]

ParamDictionary* Ogre::StringInterface::getParamDictionary ( void )

inlineinherited

Retrieves the parameter dictionary for this class.

Remarks: Only valid to call this after createParamDictionary.

Returns: Pointer to ParamDictionary shared by all instances of this class which you can add parameters to, retrieve parameters etc.

◆ getParamDictionary() [2/2]

const ParamDictionary* Ogre::StringInterface::getParamDictionary ( void ) const

inlineinherited

◆ getParameters()

const ParameterList& Ogre::StringInterface::getParameters ( void ) const

inherited

Retrieves a list of parameters valid for this object.

Returns: A reference to a static list of ParameterDef objects.

◆ setParameter()

bool Ogre::StringInterface::setParameter	(	const String &	name,
		const String &	value
	)

inherited

Generic parameter setting method.

Remarks: Call this method with the name of a parameter and a string version of the value to set. The implementor will convert the string to a native type internally. If in doubt, check the parameter definition in the list returned from StringInterface::getParameters.

Parameters

name	The name of the parameter to set
value	String value. Must be in the right format for the type specified in the parameter definition. See the StringConverter class for more information.

Returns: true if set was successful, false otherwise (NB no exceptions thrown - tolerant method)

Referenced by Ogre::StringInterface::copyParametersTo().

◆ setParameterList()

void Ogre::StringInterface::setParameterList ( const NameValuePairList & paramList )

inherited

Generic multiple parameter setting method.

Remarks: Call this method with a list of name / value pairs to set. The implementor will convert the string to a native type internally. If in doubt, check the parameter definition in the list returned from StringInterface::getParameters.

Parameters

paramList Name/value pair list

◆ getParameter()

String Ogre::StringInterface::getParameter ( const String & name ) const

inlineinherited

Generic parameter retrieval method.

Remarks: Call this method with the name of a parameter to retrieve a string-format value of the parameter in question. If in doubt, check the parameter definition in the list returned from getParameters for the type of this parameter. If you like you can use StringConverter to convert this string back into a native type.

Parameters

name	The name of the parameter to get

Returns: String value of parameter, blank if not found

References Ogre::ParamCommand::doGet().

◆ copyParametersTo()

void Ogre::StringInterface::copyParametersTo ( StringInterface * dest ) const

inlineinherited

Method for copying this object's parameters to another object.

Remarks: This method takes the values of all the object's parameters and tries to set the same values on the destination object. This provides a completely type independent way to copy parameters to other objects. Note that because of the String manipulation involved, this should not be regarded as an efficient process and should be saved for times outside of the rendering loop.

: Any unrecognised parameters will be ignored as with setParameter method.

Parameters

dest	Pointer to object to have it's parameters set the same as this object.

References Ogre::StringInterface::setParameter().

◆ cleanupDictionary()

static void Ogre::StringInterface::cleanupDictionary ( )

staticinherited

Cleans up the static 'msDictionary' required to reset Ogre, otherwise the containers are left with invalid pointers, which will lead to a crash as soon as one of the ResourceManager implementers (e.g.

MaterialManager) initializes.

◆ getTechnique()

virtual Technique* Ogre::Renderable::getTechnique ( void ) const

inlinevirtualinherited

Retrieves a pointer to the Material Technique this renderable object uses.

Remarks: This is to allow Renderables to use a chosen Technique if they wish, otherwise they will use the best Technique available for the Material they are using.

Reimplemented in Ogre::InstanceBatch, Ogre::StaticGeometry::GeometryBucket, and Ogre::SubEntity.

◆ getRenderOperation()

virtual void Ogre::Renderable::getRenderOperation ( RenderOperation & op )

pure virtualinherited

Gets the render operation required to send this object to the frame buffer.

Implemented in Ogre::BillboardSet, Ogre::Frustum, Ogre::ManualObject::ManualObjectSection, Ogre::InstanceBatch, Ogre::BorderRenderable, Ogre::BillboardChain, Ogre::StaticGeometry::GeometryBucket, Ogre::SubEntity, Ogre::Node::DebugRenderable, Ogre::PanelOverlayElement, Ogre::TextAreaOverlayElement, Ogre::SimpleRenderable, and Ogre::ShadowRenderable.

◆ preRender()

virtual bool Ogre::Renderable::preRender	(	SceneManager *	sm,
		RenderSystem *	rsys
	)

inlinevirtualinherited

Called just prior to the Renderable being rendered.

Remarks: OGRE is a queued renderer, so the actual render commands are executed at a later time than the point at which an object is discovered to be visible. This allows ordering & grouping of renders without the discovery process having to be aware of it. It also means OGRE uses declarative render information rather than immediate mode rendering - this is very useful in that certain effects and processes can automatically be applied to a wide range of scenes, but the downside is that special cases are more difficult to handle, because there is not the declared state to cope with it.

: This method allows a Renderable to do something special at the actual point of rendering if it wishes to. When this method is called, all the material render state as declared by this Renderable has already been set, all that is left to do is to bind the buffers and perform the render. The Renderable may modify render state itself if it wants to (and restore it in the postRender call) before the automated render happens, or by returning 'false' from this method can actually suppress the automatic render and perform one of its own.

Returns: true if the automatic render should proceed, false to skip it on the assumption that the Renderable has done it manually.

Reimplemented in Ogre::BillboardChain.

◆ postRender()

virtual void Ogre::Renderable::postRender	(	SceneManager *	sm,
		RenderSystem *	rsys
	)

inlinevirtualinherited

Called immediately after the Renderable has been rendered.

◆ getNumWorldTransforms()

virtual unsigned short Ogre::Renderable::getNumWorldTransforms ( void ) const

inlinevirtualinherited

Returns the number of world transform matrices this renderable requires.

Remarks: When a renderable uses vertex blending, it uses multiple world matrices instead of a single one. Each vertex sent to the pipeline can reference one or more matrices in this list with given weights. If a renderable does not use vertex blending this method returns 1, which is the default for simplicity.

Reimplemented in Ogre::BorderRenderable, Ogre::SubEntity, Ogre::BaseInstanceBatchVTF, Ogre::InstanceBatchHW, and Ogre::InstanceBatchShader.

◆ setUseIdentityProjection()

void Ogre::Renderable::setUseIdentityProjection ( bool useIdentityProjection )

inlineinherited

Sets whether or not to use an 'identity' projection.

Remarks: Usually Renderable objects will use a projection matrix as determined by the active camera. However, if they want they can cancel this out and use an identity projection, which effectively projects in 2D using a {-1, 1} view space. Useful for overlay rendering. Normal renderables need not change this. The default is false.

See also: Renderable::getUseIdentityProjection

◆ getUseIdentityProjection()

bool Ogre::Renderable::getUseIdentityProjection ( void ) const

inlineinherited

Returns whether or not to use an 'identity' projection.

Remarks: Usually Renderable objects will use a projection matrix as determined by the active camera. However, if they want they can cancel this out and use an identity projection, which effectively projects in 2D using a {-1, 1} view space. Useful for overlay rendering. Normal renderables need not change this.

See also: Renderable::setUseIdentityProjection

◆ setUseIdentityView()

void Ogre::Renderable::setUseIdentityView ( bool useIdentityView )

inlineinherited

Sets whether or not to use an 'identity' view.

Remarks: Usually Renderable objects will use a view matrix as determined by the active camera. However, if they want they can cancel this out and use an identity matrix, which means all geometry is assumed to be relative to camera space already. Useful for overlay rendering. Normal renderables need not change this. The default is false.

See also: Renderable::getUseIdentityView

◆ getUseIdentityView()

bool Ogre::Renderable::getUseIdentityView ( void ) const

inlineinherited

Returns whether or not to use an 'identity' view.

Remarks: Usually Renderable objects will use a view matrix as determined by the active camera. However, if they want they can cancel this out and use an identity matrix, which means all geometry is assumed to be relative to camera space already. Useful for overlay rendering. Normal renderables need not change this.

See also: Renderable::setUseIdentityView

◆ getCastsShadows()

virtual bool Ogre::Renderable::getCastsShadows ( void ) const

inlinevirtualinherited

Method which reports whether this renderable would normally cast a shadow.

Remarks: Subclasses should override this if they could have been used to generate a shadow.

Reimplemented in Ogre::SubEntity, and Ogre::StaticGeometry::GeometryBucket.

◆ setCustomParameter()

void Ogre::Renderable::setCustomParameter	(	size_t	index,
		const Vector4 &	value
	)

inlineinherited

Sets a custom parameter for this Renderable, which may be used to drive calculations for this specific Renderable, like GPU program parameters.

Remarks: Calling this method simply associates a numeric index with a 4-dimensional value for this specific Renderable. This is most useful if the material which this Renderable uses a vertex or fragment program, and has an ACT_CUSTOM parameter entry. This parameter entry can refer to the index you specify as part of this call, thereby mapping a custom parameter for this renderable to a program parameter.

Parameters

index	The index with which to associate the value. Note that this does not have to start at 0, and can include gaps. It also has no direct correlation with a GPU program parameter index - the mapping between the two is performed by the ACT_CUSTOM entry, if that is used.
value	The value to associate.

◆ removeCustomParameter()

void Ogre::Renderable::removeCustomParameter ( size_t index )

inlineinherited

Removes a custom value which is associated with this Renderable at the given index.

Parameters

index Index of the parameter to remove.

See also: setCustomParameter for full details.

◆ hasCustomParameter()

bool Ogre::Renderable::hasCustomParameter ( size_t index ) const

inlineinherited

Checks whether a custom value is associated with this Renderable at the given index.

Parameters

index Index of the parameter to check for existence.

See also: setCustomParameter for full details.

◆ getCustomParameter()

const Vector4& Ogre::Renderable::getCustomParameter ( size_t index ) const

inlineinherited

Gets the custom value associated with this Renderable at the given index.

Parameters

index Index of the parameter to retrieve.

See also: setCustomParameter for full details.

References Ogre::Exception::ERR_ITEM_NOT_FOUND, and OGRE_EXCEPT.

◆ _updateCustomGpuParameter()

virtual void Ogre::Renderable::_updateCustomGpuParameter	(	const GpuProgramParameters::AutoConstantEntry &	constantEntry,
		GpuProgramParameters *	params
	)		const

inlinevirtualinherited

Update a custom GpuProgramParameters constant which is derived from information only this Renderable knows.

Remarks: This method allows a Renderable to map in a custom GPU program parameter based on it's own data. This is represented by a GPU auto parameter of ACT_CUSTOM, and to allow there to be more than one of these per Renderable, the 'data' field on the auto parameter will identify which parameter is being updated. The implementation of this method must identify the parameter being updated, and call a 'setConstant' method on the passed in GpuProgramParameters object, using the details provided in the incoming auto constant setting to identify the index at which to set the parameter.

: You do not need to override this method if you're using the standard sets of data associated with the Renderable as provided by setCustomParameter and getCustomParameter. By default, the implementation will map from the value indexed by the 'constantEntry.data' parameter to a value previously set by setCustomParameter. But custom Renderables are free to override this if they want, in any case.

Parameters

constantEntry	The auto constant entry referring to the parameter being updated
params	The parameters object which this method should call to set the updated parameters.

Reimplemented in Ogre::SubEntity.

References Ogre::GpuProgramParameters::_writeRawConstant(), Ogre::GpuProgramParameters::AutoConstantEntry::data, Ogre::GpuProgramParameters::AutoConstantEntry::elementCount, and Ogre::GpuProgramParameters::AutoConstantEntry::physicalIndex.

◆ setPolygonModeOverrideable()

void Ogre::Renderable::setPolygonModeOverrideable ( bool override )

inlineinherited

Sets whether this renderable's chosen detail level can be overridden (downgraded) by the camera setting.

Parameters

override true means that a lower camera detail will override this renderables detail level, false means it won't.

◆ getPolygonModeOverrideable()

bool Ogre::Renderable::getPolygonModeOverrideable ( void ) const

inlineinherited

Gets whether this renderable's chosen detail level can be overridden (downgraded) by the camera setting.

Referenced by Ogre::BorderRenderable::getPolygonModeOverrideable().

◆ setUserAny()

void Ogre::Renderable::setUserAny ( const Any & anything )

inlineinherited

Deprecated:: use UserObjectBindings::setUserAny via getUserObjectBindings() instead.

Sets any kind of user value on this object.

Remarks: This method allows you to associate any user value you like with this Renderable. This can be a pointer back to one of your own classes for instance.

Referenced by Ogre::InstanceBatch::getRenderOperation().

◆ getUserAny()

const Any& Ogre::Renderable::getUserAny ( void ) const

inlineinherited

Deprecated:: use UserObjectBindings::getUserAny via getUserObjectBindings() instead.

Retrieves the custom user value associated with this object.

Referenced by Ogre::InstanceBatch::getRenderOperation().

◆ getUserObjectBindings() [1/2]

UserObjectBindings& Ogre::Renderable::getUserObjectBindings ( )

inlineinherited

Return an instance of user objects binding associated with this class.

You can use it to associate one or more custom objects with this class instance.

See also: UserObjectBindings::setUserAny.

◆ getUserObjectBindings() [2/2]

const UserObjectBindings& Ogre::Renderable::getUserObjectBindings ( ) const

inlineinherited

Return an instance of user objects binding associated with this class.

You can use it to associate one or more custom objects with this class instance.

See also: UserObjectBindings::setUserAny.

◆ getRenderSystemData()

const RenderSystemDataPtr& Ogre::Renderable::getRenderSystemData ( ) const

inlineinherited

Gets RenderSystem private data.

Remarks: This should only be used by a RenderSystem

◆ setRenderSystemData()

void Ogre::Renderable::setRenderSystemData ( RenderSystemDataPtr val ) const

inlineinherited

Sets RenderSystem private data.

Remarks: This should only be used by a RenderSystem

Member Data Documentation

◆ DEFAULT_RESOURCE_GROUP

const String& Ogre::OverlayElement::DEFAULT_RESOURCE_GROUP

static

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

OgreOverlayElement.h

Public Types

Public Member Functions

Static Public Member Functions

Static Public Attributes

Detailed Description

Member Typedef Documentation

◆ RenderSystemDataPtr

Constructor & Destructor Documentation

◆ OverlayElement()

◆ ~OverlayElement()

Member Function Documentation

◆ initialise()

◆ _releaseManualHardwareResources()

◆ _restoreManualHardwareResources()

◆ getName()

◆ show()

◆ hide()

◆ isVisible()

◆ isEnabled()

◆ setEnabled()

◆ setDimensions()

◆ setPosition()

◆ setWidth()

◆ getWidth()

◆ setHeight()

◆ getHeight()

◆ setLeft()

◆ getLeft()

◆ setTop()

◆ getTop()

◆ _getLeft()

◆ _getTop()

◆ _getWidth()

◆ _getHeight()

◆ _setLeft()

◆ _setTop()

◆ _setWidth()

◆ _setHeight()

◆ _setPosition()

◆ _setDimensions()

◆ getMaterialName()

◆ setMaterial()

◆ setMaterialName()

◆ getMaterial()

◆ getWorldTransforms()

◆ _positionsOutOfDate()

◆ _update()

◆ _updateFromParent()

◆ _notifyParent()

◆ _getDerivedLeft()

◆ _getDerivedTop()

◆ _getRelativeWidth()

◆ _getRelativeHeight()

◆ _getClippingRegion()

◆ _notifyZOrder()

◆ _notifyWorldTransforms()

◆ _notifyViewport()

◆ _updateRenderQueue()

◆ visitRenderables()

◆ getTypeName()

◆ setCaption()

◆ getCaption()

◆ setColour()

◆ getColour()

◆ setMetricsMode()

◆ getMetricsMode()

◆ setHorizontalAlignment()

◆ getHorizontalAlignment()

◆ setVerticalAlignment()

◆ getVerticalAlignment()

◆ contains()

◆ findElementAt()

◆ isContainer()

◆ isKeyEnabled()

◆ isCloneable()

◆ setCloneable()

◆ getParent()

◆ _setParent()

◆ getZOrder()

◆ getSquaredViewDepth()