Ogre::OverlayManager Class Reference

Manages Overlay objects, parsing them from .overlay files and storing a lookup library of them. More...

#include <OgreOverlayManager.h>

Inheritance diagram for Ogre::OverlayManager:

List of all members.

Public Types

typedef std::map< String,
Overlay * > OverlayMap

typedef std::map< String,
OverlayElement * > ElementMap

typedef MapIterator< OverlayMap > OverlayMapIterator

typedef MapIterator< ElementMap > TemplateIterator

Public Member Functions

OverlayManager ()

virtual ~OverlayManager ()

const StringVector & getScriptPatterns (void) const

Remarks:: This method is called when a resource group is loaded if you use ResourceGroupManager::_registerScriptLoader.

Returns:: A list of file patterns, in the order they should be searched in.

void parseScript (DataStreamPtr &stream, const String &groupName)

Parameters:

stream	Weak reference to a data stream which is the source of the script
groupName	The name of a resource group which should be used if any resources are created during the parse of this script.

Real getLoadingOrder (void) const

Remarks:: There are dependencies between some kinds of scripts, and to enforce this all implementors of this interface must define a loading order.

Returns:: A value representing the relative loading order of these scripts compared to other script users, where higher values load later.

Overlay * create (const String &name)

Create a new Overlay.

Overlay * getByName (const String &name)

Retrieve an Overlay by name.

void destroy (const String &name)

Destroys an existing overlay by name.

void destroy (Overlay *overlay)

Destroys an existing overlay.

void destroyAll (void)

Destroys all existing overlays.

OverlayMapIterator getOverlayIterator (void)

void _queueOverlaysForRendering (Camera *cam, RenderQueue *pQueue, Viewport *vp)

Internal method for queueing the visible overlays for rendering.

bool hasViewportChanged (void) const

Method for determining if the viewport has changed dimensions.

int getViewportHeight (void) const

Gets the height of the destination viewport in pixels.

int getViewportWidth (void) const

Gets the width of the destination viewport in pixels.

Real getViewportAspectRatio (void) const

OverlayElement * createOverlayElement (const String &typeName, const String &instanceName, bool isTemplate=false)

Creates a new OverlayElement of the type requested.

OverlayElement * getOverlayElement (const String &name, bool isTemplate=false)

Gets a reference to an existing element.

void destroyOverlayElement (const String &instanceName, bool isTemplate=false)

Destroys a OverlayElement.

void destroyOverlayElement (OverlayElement *pInstance, bool isTemplate=false)

Destroys a OverlayElement.

void destroyAllOverlayElements (bool isTemplate=false)

Destroys all the OverlayElement created so far.

void addOverlayElementFactory (OverlayElementFactory *elemFactory)

Registers a new OverlayElementFactory with this manager.

OverlayElement * createOverlayElementFromTemplate (const String &templateName, const String &typeName, const String &instanceName, bool isTemplate=false)

OverlayElement * cloneOverlayElementFromTemplate (const String &templateName, const String &instanceName)

OverlayElement * createOverlayElementFromFactory (const String &typeName, const String &instanceName)

TemplateIterator getTemplateIterator ()

Returns an iterator over all templates in this manager.

bool isTemplate (String strName) const

Static Public Member Functions

OverlayManager & getSingleton (void)

Override standard Singleton retrieval.

OverlayManager * getSingletonPtr (void)

Override standard Singleton retrieval.

Protected Types

typedef std::map< String,
OverlayElementFactory * > FactoryMap

typedef std::set< String > LoadedScripts

Protected Member Functions

void parseNewElement (DataStreamPtr &chunk, String &elemType, String &elemName, bool isContainer, Overlay *pOverlay, bool isTemplate, String templateName=String(""), OverlayContainer *container=0)

void parseAttrib (const String &line, Overlay *pOverlay)

void parseElementAttrib (const String &line, Overlay *pOverlay, OverlayElement *pElement)

void skipToNextCloseBrace (DataStreamPtr &chunk)

void skipToNextOpenBrace (DataStreamPtr &chunk)

bool parseChildren (DataStreamPtr &chunk, const String &line, Overlay *pOverlay, bool isTemplate, OverlayContainer *parent=NULL)

ElementMap & getElementMap (bool isTemplate)

OverlayElement * createOverlayElementImpl (const String &typeName, const String &instanceName, ElementMap &elementMap)

OverlayElement * getOverlayElementImpl (const String &name, ElementMap &elementMap)

void destroyOverlayElementImpl (const String &instanceName, ElementMap &elementMap)

void destroyOverlayElementImpl (OverlayElement *pInstance, ElementMap &elementMap)

void destroyAllOverlayElementsImpl (ElementMap &elementMap)

Protected Attributes

int mLastViewportWidth

int mLastViewportHeight

bool mViewportDimensionsChanged

Static Protected Attributes

OverlayManager * ms_Singleton

Detailed Description

Manages Overlay objects, parsing them from .overlay files and storing a lookup library of them.

Alo manages the creation of OverlayContainers and OverlayElements, used for non-interactive 2D elements such as HUDs.

Definition at line 41 of file OgreOverlayManager.h.

Member Typedef Documentation

typedef std::map<String, OverlayElement*> Ogre::OverlayManager::ElementMap

Definition at line 45 of file OgreOverlayManager.h.

typedef std::map<String, OverlayElementFactory*> Ogre::OverlayManager::FactoryMap [protected]

Definition at line 63 of file OgreOverlayManager.h.

typedef std::set<String> Ogre::OverlayManager::LoadedScripts [protected]

Definition at line 69 of file OgreOverlayManager.h.

typedef std::map<String, Overlay*> Ogre::OverlayManager::OverlayMap

Definition at line 44 of file OgreOverlayManager.h.

typedef MapIterator<OverlayMap> Ogre::OverlayManager::OverlayMapIterator

Definition at line 110 of file OgreOverlayManager.h.

typedef MapIterator<ElementMap> Ogre::OverlayManager::TemplateIterator

Definition at line 180 of file OgreOverlayManager.h.
Referenced by getTemplateIterator().

Constructor & Destructor Documentation

Ogre::OverlayManager::OverlayManager ( )

virtual Ogre::OverlayManager::~OverlayManager ( ) [virtual]

Member Function Documentation

void Ogre::OverlayManager::_queueOverlaysForRendering ( Camera * cam,

RenderQueue * pQueue,

Viewport * vp

)

Internal method for queueing the visible overlays for rendering.

void Ogre::OverlayManager::addOverlayElementFactory ( OverlayElementFactory * elemFactory )

Registers a new OverlayElementFactory with this manager.

Remarks:
Should be used by plugins or other apps wishing to provide a new OverlayElement subclass.

OverlayElement* Ogre::OverlayManager::cloneOverlayElementFromTemplate ( const String & templateName,

const String & instanceName

)

Remarks:
Creates a new OverlayElement object from the specified template name. The new object's name, and all of it's children, will be instanceName/orignalName.

Overlay* Ogre::OverlayManager::create ( const String & name )

Create a new Overlay.

OverlayElement* Ogre::OverlayManager::createOverlayElement ( const String & typeName,

const String & instanceName,

bool isTemplate = false

)

Creates a new OverlayElement of the type requested.

Remarks:
The type of element to create is passed in as a string because this allows plugins to register new types of component.

Parameters:

typeName The type of element to create.

instanceName The name to give the new instance.

OverlayElement* Ogre::OverlayManager::createOverlayElementFromFactory ( const String & typeName,

const String & instanceName

)

OverlayElement* Ogre::OverlayManager::createOverlayElementFromTemplate ( const String & templateName,

const String & typeName,

const String & instanceName,

bool isTemplate = false

)

OverlayElement* Ogre::OverlayManager::createOverlayElementImpl ( const String & typeName,

const String & instanceName,

ElementMap & elementMap

) [protected]

void Ogre::OverlayManager::destroy ( Overlay * overlay )

Destroys an existing overlay.

void Ogre::OverlayManager::destroy ( const String & name )

Destroys an existing overlay by name.

void Ogre::OverlayManager::destroyAll ( void )

Destroys all existing overlays.

void Ogre::OverlayManager::destroyAllOverlayElements ( bool isTemplate = false )

Destroys all the OverlayElement created so far.

Remarks:
Best to leave this to the engine to call internally, there should rarely be a need to call it yourself.

void Ogre::OverlayManager::destroyAllOverlayElementsImpl ( ElementMap & elementMap ) [protected]

void Ogre::OverlayManager::destroyOverlayElement ( OverlayElement * pInstance,

bool isTemplate = false

)

Destroys a OverlayElement.

Remarks:
Make sure you're not still using this in an Overlay. If in doubt, let OGRE destroy elements on shutdown.

void Ogre::OverlayManager::destroyOverlayElement ( const String & instanceName,

bool isTemplate = false

)

Destroys a OverlayElement.

Remarks:
Make sure you're not still using this in an Overlay. If in doubt, let OGRE destroy elements on shutdown.

void Ogre::OverlayManager::destroyOverlayElementImpl ( OverlayElement * pInstance,

ElementMap & elementMap

) [protected]

void Ogre::OverlayManager::destroyOverlayElementImpl ( const String & instanceName,

ElementMap & elementMap

) [protected]

Overlay* Ogre::OverlayManager::getByName ( const String & name )

Retrieve an Overlay by name.

Returns:
A pointer to the Overlay, or 0 if not found

ElementMap& Ogre::OverlayManager::getElementMap ( bool isTemplate ) [protected]

Real Ogre::OverlayManager::getLoadingOrder ( void ) const [virtual]

Remarks:
There are dependencies between some kinds of scripts, and to enforce this all implementors of this interface must define a loading order.

Returns:
A value representing the relative loading order of these scripts compared to other script users, where higher values load later.

Implements Ogre::ScriptLoader.

OverlayElement* Ogre::OverlayManager::getOverlayElement ( const String & name,

bool isTemplate = false

)

Gets a reference to an existing element.

OverlayElement* Ogre::OverlayManager::getOverlayElementImpl ( const String & name,

ElementMap & elementMap

) [protected]

OverlayMapIterator Ogre::OverlayManager::getOverlayIterator ( void )

const StringVector& Ogre::OverlayManager::getScriptPatterns ( void ) const [virtual]

Remarks:
This method is called when a resource group is loaded if you use ResourceGroupManager::_registerScriptLoader.

Returns:
A list of file patterns, in the order they should be searched in.

Implements Ogre::ScriptLoader.

OverlayManager& Ogre::OverlayManager::getSingleton ( void ) [static]

Override standard Singleton retrieval.

Remarks:
Why do we do this? Well, it's because the Singleton implementation is in a .h file, which means it gets compiled into anybody who includes it. This is needed for the Singleton template to work, but we actually only want it compiled into the implementation of the class based on the Singleton, not all of them. If we don't change this, we get link errors when trying to use the Singleton-based class from an outside dll.

This method just delegates to the template version anyway, but the implementation stays in this single compilation unit, preventing link errors.

Reimplemented from Ogre::Singleton< OverlayManager >.

OverlayManager* Ogre::OverlayManager::getSingletonPtr ( void ) [static]

Override standard Singleton retrieval.

Remarks:
Why do we do this? Well, it's because the Singleton implementation is in a .h file, which means it gets compiled into anybody who includes it. This is needed for the Singleton template to work, but we actually only want it compiled into the implementation of the class based on the Singleton, not all of them. If we don't change this, we get link errors when trying to use the Singleton-based class from an outside dll.

This method just delegates to the template version anyway, but the implementation stays in this single compilation unit, preventing link errors.

Reimplemented from Ogre::Singleton< OverlayManager >.

TemplateIterator Ogre::OverlayManager::getTemplateIterator ( )

Returns an iterator over all templates in this manager.

Definition at line 182 of file OgreOverlayManager.h.
References TemplateIterator.

Real Ogre::OverlayManager::getViewportAspectRatio ( void ) const

int Ogre::OverlayManager::getViewportHeight ( void ) const

Gets the height of the destination viewport in pixels.

int Ogre::OverlayManager::getViewportWidth ( void ) const

Gets the width of the destination viewport in pixels.

bool Ogre::OverlayManager::hasViewportChanged ( void ) const

Method for determining if the viewport has changed dimensions.

Remarks:
This is used by pixel-based OverlayElements to work out if they need to reclaculate their sizes.

bool Ogre::OverlayManager::isTemplate ( String strName ) const

Definition at line 187 of file OgreOverlayManager.h.
References Ogre::String.

void Ogre::OverlayManager::parseAttrib ( const String & line,

Overlay * pOverlay

) [protected]

bool Ogre::OverlayManager::parseChildren ( DataStreamPtr & chunk,

const String & line,

Overlay * pOverlay,

bool isTemplate,

OverlayContainer * parent = NULL

) [protected]

void Ogre::OverlayManager::parseElementAttrib ( const String & line,

Overlay * pOverlay,

OverlayElement * pElement

) [protected]

void Ogre::OverlayManager::parseNewElement ( DataStreamPtr & chunk,

String & elemType,

String & elemName,

bool isContainer,

Overlay * pOverlay,

bool isTemplate,

String templateName = String(""),

OverlayContainer * container = 0

) [protected]

void Ogre::OverlayManager::parseScript ( DataStreamPtr & stream,

const String & groupName

) [virtual]

Parameters:

stream Weak reference to a data stream which is the source of the script

groupName The name of a resource group which should be used if any resources are created during the parse of this script.

Implements Ogre::ScriptLoader.

void Ogre::OverlayManager::skipToNextCloseBrace ( DataStreamPtr & chunk ) [protected]

void Ogre::OverlayManager::skipToNextOpenBrace ( DataStreamPtr & chunk ) [protected]

Member Data Documentation

FactoryMap Ogre::OverlayManager::mFactories [protected]

Definition at line 64 of file OgreOverlayManager.h.

ElementMap Ogre::OverlayManager::mInstances [protected]

Definition at line 66 of file OgreOverlayManager.h.

int Ogre::OverlayManager::mLastViewportHeight [protected]

Definition at line 57 of file OgreOverlayManager.h.

int Ogre::OverlayManager::mLastViewportWidth [protected]

Definition at line 57 of file OgreOverlayManager.h.

LoadedScripts Ogre::OverlayManager::mLoadedScripts [protected]

Definition at line 70 of file OgreOverlayManager.h.

OverlayMap Ogre::OverlayManager::mOverlayMap [protected]

Definition at line 47 of file OgreOverlayManager.h.

OverlayManager * Ogre::Singleton< OverlayManager >::ms_Singleton [static, protected, inherited]

Definition at line 54 of file OgreSingleton.h.

StringVector Ogre::OverlayManager::mScriptPatterns [protected]

Definition at line 48 of file OgreOverlayManager.h.

ElementMap Ogre::OverlayManager::mTemplates [protected]

Definition at line 67 of file OgreOverlayManager.h.

bool Ogre::OverlayManager::mViewportDimensionsChanged [protected]

Definition at line 58 of file OgreOverlayManager.h.

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

OgreOverlayManager.h