org.zkoss.image

Class Images

java.lang.Object

org.zkoss.image.Images

public class Images
extends Object

Utilities to handle images.

Since:

3.0.7

Author:

tomyeh

Field Summary

Fields

Modifier and Type	Field and Description
static String	BASE64SPACERIMAGE A base64 string to display a spacer image.

Constructor Summary

Constructors

Constructor and Description
Images()

Method Summary

Modifier and Type	Method and Description
static Image	encode(String name, RenderedImage image) Encodes an AWT image into a ZK image.
static Image	encode(String name, RenderedImage image, float quality, boolean encodeAlpha) Encodes an AWT image into a ZK image (in PNG, JPEG or other format).

Methods inherited from class java.lang.Object

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

Field Detail

BASE64SPACERIMAGE

public static final String BASE64SPACERIMAGE

A base64 string to display a spacer image.

Since:

9.6.0

See Also:

Constant Field Values

Constructor Detail

Images

public Images()

Method Detail

encode

public static Image encode(String name,
                           RenderedImage image,
                           float quality,
                           boolean encodeAlpha)
                    throws IOException

Encodes an AWT image into a ZK image (in PNG, JPEG or other format).

Parameters:

name - The name of the image. The extension of the name must be the format. Supported format: png and jpeg. For example, foo.png and foo.jpeg.

image - The AWT image to be encoded.

quality - The quality to use for the image encoding. It is a number between 0 and 1. The higher the value, the better the output quality. Not applicable to "png".

encodeAlpha - Whether to encode alpha transparency. Not applicable to "png".

Throws:

IllegalArgumentException - if name doesn't contain an extension with supported format.

IOException

encode

public static Image encode(String name,
                           RenderedImage image)
                    throws IOException

Encodes an AWT image into a ZK image.

Parameters:

name - The name of the image. The extension of the name must be the format. For example, foo.png and foo.jpeg.

image - The AWT image to be encoded.

Throws:

IllegalArgumentException - if name doesn't contain an extension with supported format.

IOException