Ogre::FontManager Class Reference

Manages Font resources, parsing .fontdef files and generally organising them. More...

#include <OgreFontManager.h>

Inheritance diagram for Ogre::FontManager:

List of all members.

Public Types

typedef HashMap< String, ResourcePtr > ResourceMap

typedef std::map< ResourceHandle,
ResourcePtr > ResourceHandleMap

typedef MapIterator< ResourceHandleMap > ResourceMapIterator

Public Member Functions

FontManager ()

~FontManager ()

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.

virtual ResourcePtr create (const String &name, const String &group, bool isManual=false, ManualResourceLoader *loader=0, const NameValuePairList *createParams=0)

Creates a new blank resource, but does not immediately load it.

virtual void setMemoryBudget (size_t bytes)

Set a limit on the amount of memory this resource handler may use.

virtual size_t getMemoryBudget (void) const

Get the limit on the amount of memory this resource handler may use.

virtual void unload (const String &name)

Unloads a single resource by name.

virtual void unload (ResourceHandle handle)

Unloads a single resource by handle.

virtual void unloadAll (bool reloadableOnly=true)

Unloads all resources.

virtual void reloadAll (bool reloadableOnly=true)

Caused all currently loaded resources to be reloaded.

virtual void unloadUnreferencedResources (bool reloadableOnly=true)

Unload all resources which are not referenced by any other object.

virtual void reloadUnreferencedResources (bool reloadableOnly=true)

Caused all currently loaded but not referenced by any other object resources to be reloaded.

virtual void remove (ResourcePtr &r)

Remove a single resource.

virtual void remove (const String &name)

Remove a single resource by name.

virtual void remove (ResourceHandle handle)

Remove a single resource by handle.

virtual void removeAll (void)

Removes all resources.

virtual ResourcePtr getByName (const String &name)

Retrieves a pointer to a resource by name, or null if the resource does not exist.

virtual ResourcePtr getByHandle (ResourceHandle handle)

Retrieves a pointer to a resource by handle, or null if the resource does not exist.

virtual bool resourceExists (const String &name)

Returns whether the named resource exists in this manager.

virtual bool resourceExists (ResourceHandle handle)

Returns whether a resource with the given handle exists in this manager.

virtual void _notifyResourceTouched (Resource *res)

Notify this manager that a resource which it manages has been 'touched', ie used.

virtual void _notifyResourceLoaded (Resource *res)

Notify this manager that a resource which it manages has been loaded.

virtual void _notifyResourceUnloaded (Resource *res)

Notify this manager that a resource which it manages has been unloaded.

virtual ResourcePtr load (const String &name, const String &group, bool isManual=false, ManualResourceLoader *loader=0, const NameValuePairList *loadParams=0)

Generic load method, used to create a Resource specific to this ResourceManager without using one of the specialised 'load' methods (containing per-Resource-type parameters).

virtual const StringVector & getScriptPatterns (void) const

Gets the file patterns which should be used to find scripts for this ResourceManager.

virtual Real getLoadingOrder (void) const

Gets the relative loading order of resources of this type.

const String & getResourceType (void) const

Gets a string identifying the type of resource this manager handles.

ResourceMapIterator getResourceIterator (void)

Returns an iterator over all resources in this manager.

Static Public Member Functions

FontManager & getSingleton (void)

Override standard Singleton retrieval.

FontManager * getSingletonPtr (void)

Override standard Singleton retrieval.

Protected Member Functions

Resource * createImpl (const String &name, ResourceHandle handle, const String &group, bool isManual, ManualResourceLoader *loader, const NameValuePairList *params)

Internal methods.

void parseAttribute (const String &line, FontPtr &pFont)

void logBadAttrib (const String &line, FontPtr &pFont)

ResourceHandle getNextHandle (void)

Allocates the next handle.

virtual void addImpl (ResourcePtr &res)

Add a newly created resource to the manager (note weak reference).

virtual void removeImpl (ResourcePtr &res)

Remove a resource from this manager; remove it from the lists.

virtual void checkUsage (void)

Checks memory usage and pages out if required.

virtual size_t getMemoryUsage (void) const

Gets the current memory usage, in bytes.

Protected Attributes

size_t mMemoryBudget

size_t mMemoryUsage

StringVector

mScriptPatterns

Patterns to use to look for scripts if supported (e.g. *.overlay).

Real

mLoadOrder

Loading order relative to other managers, higher is later.

String

mResourceType

String identifying the resource type this manager handles.

Static Protected Attributes

FontManager * ms_Singleton

Detailed Description

Manages Font resources, parsing .fontdef files and generally organising them.

Definition at line 37 of file OgreFontManager.h.

Member Typedef Documentation

typedef std::map<ResourceHandle, ResourcePtr> Ogre::ResourceManager::ResourceHandleMap [inherited]

Definition at line 387 of file OgreResourceManager.h.

typedef HashMap< String, ResourcePtr > Ogre::ResourceManager::ResourceMap [inherited]

Definition at line 386 of file OgreResourceManager.h.

typedef MapIterator<ResourceHandleMap> Ogre::ResourceManager::ResourceMapIterator [inherited]

Definition at line 405 of file OgreResourceManager.h.
Referenced by Ogre::ResourceManager::getResourceIterator().

Constructor & Destructor Documentation

Ogre::FontManager::FontManager ( )

Ogre::FontManager::~FontManager ( )

Member Function Documentation

virtual void Ogre::ResourceManager::_notifyResourceLoaded ( Resource * res ) [virtual, inherited]

Notify this manager that a resource which it manages has been loaded.

virtual void Ogre::ResourceManager::_notifyResourceTouched ( Resource * res ) [virtual, inherited]

Notify this manager that a resource which it manages has been 'touched', ie used.

virtual void Ogre::ResourceManager::_notifyResourceUnloaded ( Resource * res ) [virtual, inherited]

Notify this manager that a resource which it manages has been unloaded.

virtual void Ogre::ResourceManager::addImpl ( ResourcePtr & res ) [protected, virtual, inherited]

Add a newly created resource to the manager (note weak reference).

virtual void Ogre::ResourceManager::checkUsage ( void ) [protected, virtual, inherited]

Checks memory usage and pages out if required.

virtual ResourcePtr Ogre::ResourceManager::create ( const String & name,

const String & group,

bool isManual = false,

ManualResourceLoader * loader = 0,

const NameValuePairList * createParams = 0

) [virtual, inherited]

Creates a new blank resource, but does not immediately load it.

Remarks:
Resource managers handle disparate types of resources, so if you want to get at the detailed interface of this resource, you'll have to cast the result to the subclass you know you're creating.

Parameters:

name The unique name of the resource

group The name of the resource group to attach this new resource to

isManual Is this resource manually loaded? If so, you should really populate the loader parameter in order that the load process can call the loader back when loading is required.

loader Pointer to a ManualLoader implementation which will be called when the Resource wishes to load (should be supplied if you set isManual to true). You can in fact leave this parameter null if you wish, but the Resource will never be able to reload if anything ever causes it to unload. Therefore provision of a proper ManualLoader instance is strongly recommended.

createParams If any parameters are required to create an instance, they should be supplied here as name / value pairs

Resource* Ogre::FontManager::createImpl ( const String & name,

ResourceHandle handle,

const String & group,

bool isManual,

ManualResourceLoader * loader,

const NameValuePairList * params

) [protected, virtual]

Internal methods.

Implements Ogre::ResourceManager.

virtual ResourcePtr Ogre::ResourceManager::getByHandle ( ResourceHandle handle ) [virtual, inherited]

Retrieves a pointer to a resource by handle, or null if the resource does not exist.

virtual ResourcePtr Ogre::ResourceManager::getByName ( const String & name ) [virtual, inherited]

Retrieves a pointer to a resource by name, or null if the resource does not exist.

virtual Real Ogre::ResourceManager::getLoadingOrder ( void ) const [virtual, inherited]

Gets the relative loading order of resources of this type.

Remarks:
There are dependencies between some kinds of resource in terms of loading order, and this value enumerates that. Higher values load later during bulk loading tasks.

Implements Ogre::ScriptLoader.
Definition at line 340 of file OgreResourceManager.h.
References Ogre::Real.

virtual size_t Ogre::ResourceManager::getMemoryBudget ( void ) const [virtual, inherited]

Get the limit on the amount of memory this resource handler may use.

virtual size_t Ogre::ResourceManager::getMemoryUsage ( void ) const [protected, virtual, inherited]

Gets the current memory usage, in bytes.

Definition at line 382 of file OgreResourceManager.h.

ResourceHandle Ogre::ResourceManager::getNextHandle ( void ) [protected, inherited]

Allocates the next handle.

ResourceMapIterator Ogre::ResourceManager::getResourceIterator ( void ) [inherited]

Returns an iterator over all resources in this manager.

Note:
Use of this iterator is NOT thread safe!

Definition at line 410 of file OgreResourceManager.h.
References Ogre::ResourceManager::ResourceMapIterator.

const String& Ogre::ResourceManager::getResourceType ( void ) const [inherited]

Gets a string identifying the type of resource this manager handles.

Definition at line 343 of file OgreResourceManager.h.
References Ogre::String.

virtual const StringVector& Ogre::ResourceManager::getScriptPatterns ( void ) const [virtual, inherited]

Gets the file patterns which should be used to find scripts for this ResourceManager.

Remarks:
Some resource managers can read script files in order to define resources ahead of time. These resources are added to the available list inside the manager, but none are loaded initially. This allows you to load the items that are used on demand, or to load them all as a group if you wish (through ResourceGroupManager).

This method lets you determine the file pattern which will be used to identify scripts intended for this manager.

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

See also:
isScriptingSupported, parseScript

Implements Ogre::ScriptLoader.
Definition at line 317 of file OgreResourceManager.h.
References Ogre::StringVector.

FontManager& Ogre::FontManager::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< FontManager >.

FontManager* Ogre::FontManager::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< FontManager >.

virtual ResourcePtr Ogre::ResourceManager::load ( const String & name,

const String & group,

bool isManual = false,

ManualResourceLoader * loader = 0,

const NameValuePairList * loadParams = 0

) [virtual, inherited]

Generic load method, used to create a Resource specific to this ResourceManager without using one of the specialised 'load' methods (containing per-Resource-type parameters).

Parameters:

name The name of the Resource

group The resource group to which this resource will belong

isManual Is the resource to be manually loaded? If so, you should provide a value for the loader parameter

loader The manual loader which is to perform the required actions when this resource is loaded; only applicable when you specify true for the previous parameter

loadParams Optional pointer to a list of name/value pairs containing loading parameters for this type of resource.

Reimplemented in Ogre::BspResourceManager.

void Ogre::FontManager::logBadAttrib ( const String & line,

FontPtr & pFont

) [protected]

void Ogre::FontManager::parseAttribute ( const String & line,

FontPtr & pFont

) [protected]

void Ogre::FontManager::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.

Reimplemented from Ogre::ResourceManager.

virtual void Ogre::ResourceManager::reloadAll ( bool reloadableOnly = true ) [virtual, inherited]

Caused all currently loaded resources to be reloaded.

Remarks:
All resources currently being held in this manager which are also marked as currently loaded will be unloaded, then loaded again.

Parameters:

reloadableOnly If true (the default), only reload the resource that is reloadable. Because some resources isn't reloadable, they will be unloaded but can't loaded again. Thus, you might not want to them unloaded. Or, you might unload all of them, and then populate them manually later.

See also:
Resource::isReloadable for resource is reloadable.

virtual void Ogre::ResourceManager::reloadUnreferencedResources ( bool reloadableOnly = true ) [virtual, inherited]

Caused all currently loaded but not referenced by any other object resources to be reloaded.

Remarks:
This method behaves like reloadAll, except that it only reloads resources which are not in use, ie not referenced by other objects.

Some referenced resource may exists 'weak' pointer to their sub-components (e.g. Entity held pointer to SubMesh), in this case, unload or reload that resource will cause dangerous pointer access. Use this function instead of reloadAll allows you avoid fail in those situations.

Parameters:

reloadableOnly If true (the default), only reloads resources which can be subsequently automatically reloaded.

virtual void Ogre::ResourceManager::remove ( ResourceHandle handle ) [virtual, inherited]

Remove a single resource by handle.

Remarks:
Removes a single resource, meaning it will be removed from the list of valid resources in this manager, also causing it to be unloaded.

Note:
The word 'Destroy' is not used here, since if any other pointers are referring to this resource, it will persist until they have finished with it; however to all intents and purposes it no longer exists and will likely get destroyed imminently.
If you do have shared pointers to resources hanging around after the ResourceManager is destroyed, you may get problems on destruction of these resources if they were relying on the manager (especially if it is a plugin). If you find you get problems on shutdown in the destruction of resources, try making sure you release all your shared pointers before you shutdown OGRE.

virtual void Ogre::ResourceManager::remove ( const String & name ) [virtual, inherited]

Remove a single resource by name.

Remarks:
Removes a single resource, meaning it will be removed from the list of valid resources in this manager, also causing it to be unloaded.

Note:
The word 'Destroy' is not used here, since if any other pointers are referring to this resource, it will persist until they have finished with it; however to all intents and purposes it no longer exists and will likely get destroyed imminently.
If you do have shared pointers to resources hanging around after the ResourceManager is destroyed, you may get problems on destruction of these resources if they were relying on the manager (especially if it is a plugin). If you find you get problems on shutdown in the destruction of resources, try making sure you release all your shared pointers before you shutdown OGRE.

virtual void Ogre::ResourceManager::remove ( ResourcePtr & r ) [virtual, inherited]

Remove a single resource.

Remarks:
Removes a single resource, meaning it will be removed from the list of valid resources in this manager, also causing it to be unloaded.

Note:
The word 'Destroy' is not used here, since if any other pointers are referring to this resource, it will persist until they have finished with it; however to all intents and purposes it no longer exists and will likely get destroyed imminently.
If you do have shared pointers to resources hanging around after the ResourceManager is destroyed, you may get problems on destruction of these resources if they were relying on the manager (especially if it is a plugin). If you find you get problems on shutdown in the destruction of resources, try making sure you release all your shared pointers before you shutdown OGRE.

virtual void Ogre::ResourceManager::removeAll ( void ) [virtual, inherited]

Removes all resources.

Note:
The word 'Destroy' is not used here, since if any other pointers are referring to these resources, they will persist until they have been finished with; however to all intents and purposes the resources no longer exist and will get destroyed imminently.
If you do have shared pointers to resources hanging around after the ResourceManager is destroyed, you may get problems on destruction of these resources if they were relying on the manager (especially if it is a plugin). If you find you get problems on shutdown in the destruction of resources, try making sure you release all your shared pointers before you shutdown OGRE.

Reimplemented in Ogre::CompositorManager.

virtual void Ogre::ResourceManager::removeImpl ( ResourcePtr & res ) [protected, virtual, inherited]

Remove a resource from this manager; remove it from the lists.

virtual bool Ogre::ResourceManager::resourceExists ( ResourceHandle handle ) [virtual, inherited]

Returns whether a resource with the given handle exists in this manager.

Definition at line 265 of file OgreResourceManager.h.
References Ogre::SharedPtr< T >::isNull(), and Ogre::ResourceHandle.

virtual bool Ogre::ResourceManager::resourceExists ( const String & name ) [virtual, inherited]

Returns whether the named resource exists in this manager.

Definition at line 260 of file OgreResourceManager.h.
References Ogre::SharedPtr< T >::isNull(), and Ogre::String.

virtual void Ogre::ResourceManager::setMemoryBudget ( size_t bytes ) [virtual, inherited]

Set a limit on the amount of memory this resource handler may use.

Remarks:
If, when asked to load a new resource, the manager believes it will exceed this memory budget, it will temporarily unload a resource to make room for the new one. This unloading is not permanent and the Resource is not destroyed; it simply needs to be reloaded when next used.

virtual void Ogre::ResourceManager::unload ( ResourceHandle handle ) [virtual, inherited]

Unloads a single resource by handle.

Remarks:
Unloaded resources are not removed, they simply free up their memory as much as they can and wait to be reloaded.

See also:
ResourceGroupManager for unloading of resource groups.

virtual void Ogre::ResourceManager::unload ( const String & name ) [virtual, inherited]

Unloads a single resource by name.

Remarks:
Unloaded resources are not removed, they simply free up their memory as much as they can and wait to be reloaded.

See also:
ResourceGroupManager for unloading of resource groups.

virtual void Ogre::ResourceManager::unloadAll ( bool reloadableOnly = true ) [virtual, inherited]

Unloads all resources.

Remarks:
Unloaded resources are not removed, they simply free up their memory as much as they can and wait to be reloaded.

See also:
ResourceGroupManager for unloading of resource groups.

Parameters:

reloadableOnly If true (the default), only unload the resource that is reloadable. Because some resources isn't reloadable, they will be unloaded but can't load them later. Thus, you might not want to them unloaded. Or, you might unload all of them, and then populate them manually later.

See also:
Resource::isReloadable for resource is reloadable.

virtual void Ogre::ResourceManager::unloadUnreferencedResources ( bool reloadableOnly = true ) [virtual, inherited]

Unload all resources which are not referenced by any other object.

Remarks:
This method behaves like unloadAll, except that it only unloads resources which are not in use, ie not referenced by other objects. This allows you to free up some memory selectively whilst still keeping the group around (and the resources present, just not using much memory).

Some referenced resource may exists 'weak' pointer to their sub-components (e.g. Entity held pointer to SubMesh), in this case, unload or reload that resource will cause dangerous pointer access. Use this function instead of unloadAll allows you avoid fail in those situations.

Parameters:

reloadableOnly If true (the default), only unloads resources which can be subsequently automatically reloaded.

Member Data Documentation

Real Ogre::ResourceManager::mLoadOrder [protected, inherited]

Loading order relative to other managers, higher is later.

Definition at line 400 of file OgreResourceManager.h.

size_t Ogre::ResourceManager::mMemoryBudget [protected, inherited]

Definition at line 392 of file OgreResourceManager.h.

size_t Ogre::ResourceManager::mMemoryUsage [protected, inherited]

Definition at line 393 of file OgreResourceManager.h.

ResourceHandle Ogre::ResourceManager::mNextHandle [protected, inherited]

Definition at line 391 of file OgreResourceManager.h.

ResourceMap Ogre::ResourceManager::mResources [protected, inherited]

Definition at line 390 of file OgreResourceManager.h.

ResourceHandleMap Ogre::ResourceManager::mResourcesByHandle [protected, inherited]

Definition at line 389 of file OgreResourceManager.h.

String Ogre::ResourceManager::mResourceType [protected, inherited]

String identifying the resource type this manager handles.

Definition at line 402 of file OgreResourceManager.h.

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

Definition at line 54 of file OgreSingleton.h.

StringVector Ogre::ResourceManager::mScriptPatterns [protected, inherited]

Patterns to use to look for scripts if supported (e.g. *.overlay).

Definition at line 398 of file OgreResourceManager.h.

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

OgreFontManager.h