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Zeta Components Manual :: Docs For Class ezcImageGdBaseHandler

ImageConversion::ezcImageGdBaseHandler

Class ezcImageGdBaseHandler

ezcImageHandler implementation for the GD2 extension of PHP.

This class only implements the base funtionality of handling GD images. If you want to manipulate images using ext/GD in your application, you should use the ezcImageGdHandler.

You can use this base class to implement your own filter set on basis of ext/GD, but you can also use ezcImageGdHandler for this and profit from its already implemented filters.

Source for this file: /ImageConversion/src/handlers/gd_base.php

ezcImageMethodcallHandler
   |
   --ezcImageGdBaseHandler

Version:

//autogentag//

Descendants

Child Class	Description
ezcImageGdHandler	ezcImageHandler implementation for the GD2 extension of PHP, including filters.

Method Summary

public static ezcImageHandlerSettings	`defaultSettings( )` Creates default settings for the handler and returns it.
public ezcImageGdBaseHandler	`__construct( $settings )` Create a new image handler.
public void	`close( $image )` Close the file referenced by $image.
public string	`load( $file , [ $mime = null] )` Load an image file.
protected void	`replaceTransparency( $image , $color )` Replaces a transparent background with the given color.
public void	`save( $image , [ $newFile = null] , [ $mime = null] , [ $options = null] )` Save an image file.

Methods

defaultSettings

static ezcImageHandlerSettings defaultSettings( )

Creates default settings for the handler and returns it.

The reference name will be set to 'GD'.

__construct

ezcImageGdBaseHandler __construct( ezcImageHandlerSettings $settings )

Create a new image handler.

Creates an image handler. This should never be done directly, but only through the manager for configuration reasons. One can get a direct reference through manager afterwards.

Parameters:

Name	Type	Description
`$settings`	ezcImageHandlerSettings	Settings for the handler.

Exceptions:

Type	Description
`ezcImageHandlerNotAvailableException`	If the precondition for the handler is not fulfilled.

close

void close( string $image )

Close the file referenced by $image.

Frees the image reference. You should call close() before.

Parameters:

Name	Type	Description
`$image`	string	The image reference.

load

string load( string $file , [string $mime = null] )

Load an image file.

Loads an image file and returns a reference to it.

Parameters:

Name	Type	Description
`$file`	string	File to load.
`$mime`	string	The MIME type of the file.

Exceptions:

Type	Description
`ezcBaseFileNotFoundException`	If the given file does not exist.
`ezcImageMimeTypeUnsupportedException`	If the type of the given file is not recognized
`ezcImageFileNotProcessableException`	If the given file is not processable using this handler.
`ezcImageFileNameInvalidException`	If an invalid character (", ', $) is found in the file name.

replaceTransparency

void replaceTransparency( mixed $image , $color )

Replaces a transparent background with the given color.

This method is used to replace the transparent background of an image with an opaque color when converting from a transparency supporting MIME type (e.g. image/png) to a MIME type that does not support transparency.

The color

Parameters:

Name	Type	Description
`$image`	mixed
`$color`	mixed

save

void save( string $image , [string $newFile = null] , [string $mime = null] , [ezcImageSaveOptions $options = null] )

Save an image file.

Saves a given open file. Can optionally save to a new file name.

Parameters:

Name	Type	Description
`$image`	string	File reference created through load().
`$newFile`	string	Filename to save the image to.
`$mime`	string	New MIME type, if differs from initial one.
`$options`	ezcImageSaveOptions	Save options.

Exceptions:

Type	Description
`ezcImageFileNotProcessableException`	If the given file could not be saved with the given MIME type.
`ezcBaseFilePermissionException`	If the desired file exists and is not writeable.
`ezcImageMimeTypeUnsupportedException`	If the desired MIME type is not recognized
`ezcImageFileNameInvalidException`	If an invalid character (", ', $) is found in the file name.

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