com.groupdocs.editor.htmlcss.resources.images.raster

Class PngImage

java.lang.Object

com.groupdocs.editor.htmlcss.resources.images.raster.RasterImageResourceBase

com.groupdocs.editor.htmlcss.resources.images.raster.PngImage

All Implemented Interfaces:

IAuxDisposable, IHtmlResource, IImage, IImageResource, IDisposable

public final class PngImage
extends RasterImageResourceBase

Represents one image in PNG (Portable Network Graphics) format with its metadata and additional methods

Field Summary

Fields inherited from class com.groupdocs.editor.htmlcss.resources.images.raster.RasterImageResourceBase

_base64TextContent, _binaryContent, _isDisposed, _isOwnStream, _linearDimensions, _name, _streamOrigPosition, Disposed

Constructor Summary

Constructors

Constructor and Description
PngImage(String name, InputStream binaryContent) Creates new PngImage instance from content, represented as byte stream, and with specified name
PngImage(String name, String contentInBase64) Creates new PngImage instance from content, represented as base64-encoded string, and with specified name

Method Summary

Modifier and Type	Method and Description
ImageType	getType() Returns ImageType.Png
static boolean	isValid(InputStream binaryContent) Checks whether specified stream is a valid PNG image
static boolean	isValid(String contentInBase64) Checks whether specified base64-encoded string is a valid PNG image

Methods inherited from class com.groupdocs.editor.htmlcss.resources.images.raster.RasterImageResourceBase

dispose, equals, getAspectRatio, getByteContent, getFilenameWithExtension, getLength, getLinearDimensions, getName, getTextContent, isDisposed, save

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

PngImage

public PngImage(String name,
                InputStream binaryContent)

Creates new PngImage instance from content, represented as byte stream, and with specified name

Parameters:

name - Name of the PNG image. Cannot be null, empty or whitespaces.

binaryContent - Content as byte stream. Reading begins from original position. Cannot be null. Should be readable and seekable. If this instance will be disposed, this stream will be disposed too.

Throws:

IllegalArgumentException

InvalidImageFormatException

PngImage

public PngImage(String name,
                String contentInBase64)

Creates new PngImage instance from content, represented as base64-encoded string, and with specified name

Parameters:

name - Name of the PNG image. Cannot be null, empty or whitespaces.

contentInBase64 - Content as base64-encoded string. Cannot be null, empty or whitespaces. If it is not a PNG content, exception will be thrown.

Throws:

IllegalArgumentException

InvalidImageFormatException

Method Detail

getType

public ImageType getType()

Returns ImageType.Png

Specified by:

getType in interface IHtmlResource

Specified by:

getType in interface IImageResource

Specified by:

getType in class RasterImageResourceBase

Returns:

isValid

public static boolean isValid(InputStream binaryContent)

Checks whether specified stream is a valid PNG image

Parameters:

binaryContent - Byte stream, that presumably contains a PNG image

Returns:

True if specified stream contains valid PNG image, false otherwise

isValid

public static boolean isValid(String contentInBase64)

Checks whether specified base64-encoded string is a valid PNG image

Parameters:

contentInBase64 - Content of the presumably PNG image in a form of base64-encoded string

Returns:

True if specified string contains valid PNG image, false otherwise