StelTexture Class Reference

Base texture class. More...

#include <StelTexture.hpp>

Data Structures
struct	StelTextureParams
	Contains the parameters defining how a texture is created. More...

Signals
void	loadingProcessFinished (bool error)
	Emitted when the texture is ready to be bind(), i.e. More...

Public Member Functions
virtual	~StelTexture ()
	Destructor.
bool	bind (int slot=0)
	Bind the texture so that it can be used for openGL drawing (calls glBindTexture). More...
void	release () const
	Releases the currently bound texture without testing if it is currently bound, i.e. More...
void	waitForLoaded ()
	Waits until the texture data is ready for usage (i.e. More...
bool	canBind () const
	Return whether the texture can be binded, i.e. it is fully loaded.
bool	getDimensions (int &width, int &height)
	Return the width and heigth of the texture in pixels.
bool	hasAlphaChannel () const
	Returns whether the texture has an alpha channel (GL_RGBA or GL_LUMINANCE_ALPHA format) This only returns valid information after the texture is fully loaded. More...
const QString &	getErrorMessage () const
	Get the error message which caused the texture loading to fail. More...
bool	hasError () const
	Returns true if a loading error occurred.
const QString &	getFullPath () const
	Return the full path to the image file. More...
bool	isLoading () const
	Return whether the image is currently being loaded.
unsigned int	getGlSize () const
	Return texture memory size.

Friends
class	StelTextureMgr

Detailed Description

For creating an instance, use StelTextureMgr::createTexture() and StelTextureMgr::createTextureThread()

See also

StelTextureSP

Member Function Documentation

bool StelTexture::bind

(

int

slot = 0

)

If the texture is lazyly loaded, this starts the loading and return false immediately.

Returns

true if the binding successfully occured, false if the texture is not yet loaded.

const QString& StelTexture::getErrorMessage ( ) const

inline

Returns

the human friendly error message or empty string if no errors occured

const QString& StelTexture::getFullPath ( ) const

inline

If the texture was downloaded from a remote location, this function return the full URL.

bool StelTexture::hasAlphaChannel ( ) const

inline

void StelTexture::loadingProcessFinished ( bool  error )

signal

when downloaded, imageLoading and glLoading is over or when an error occured and the texture will never be available In case of error, you can query what the problem was by calling getErrorMessage()

Parameters

error

is equal to true if an error occured while loading the texture

void StelTexture::release ( ) const

inline

it simply calls glBindTexture(GL_TEXTURE_2D, 0)

void StelTexture::waitForLoaded

(

)

bind will return true after this). Do not use this for potentially network loaded textures.