Png32Format (Environmental Data Abstraction Library 1.5.2 API)

java.lang.Object
- uk.ac.rdg.resc.edal.graphics.formats.ImageFormat
- - uk.ac.rdg.resc.edal.graphics.formats.SimpleFormat
  - - uk.ac.rdg.resc.edal.graphics.formats.PngFormat
    - - uk.ac.rdg.resc.edal.graphics.formats.Png32Format

```
public class Png32Format
extends PngFormat
```
Writes 32-bit (ARGB) PNG images using the ImageIO class. Only one instance of this class will ever be created, so this class contains no member variables to ensure thread safety. Some browsers have problems with indexed PNGs, and some clients find it easier to merge 32-bit images with others.

Author:

Jon Blower

Constructor Summary

Constructors
Modifier Constructor Description

protected Png32Format()
Protected default constructor to prevent direct instantiation.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`String`	`getMimeType()`	Returns the MIME type that is supported by this ImageFormat object.
`void`	`writeImage(List<BufferedImage> frames, OutputStream out, Integer frameRate)`	Writes the given list of `java.awt.BufferedImage`s to the given OutputStream.

Methods inherited from class uk.ac.rdg.resc.edal.graphics.formats.PngFormat
supportsFullyTransparentPixels, supportsMultipleFrames, supportsPartiallyTransparentPixels

Methods inherited from class uk.ac.rdg.resc.edal.graphics.formats.SimpleFormat
requiresLegend, writeImage

Methods inherited from class uk.ac.rdg.resc.edal.graphics.formats.ImageFormat
get, getSupportedMimeTypes

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - Png32Format
```
protected Png32Format()
```
    Protected default constructor to prevent direct instantiation.
- Method Detail
  - getMimeType
```
public String getMimeType()
```
    Description copied from class: ImageFormat
    
    Returns the MIME type that is supported by this ImageFormat object.
    
    Overrides:
    
    getMimeType in class PngFormat
  - writeImage
```
public void writeImage(List<BufferedImage> frames,
                       OutputStream out,
                       Integer frameRate)
                throws IOException
```
    Description copied from class: SimpleFormat
    
    Writes the given list of java.awt.BufferedImages to the given OutputStream. If this ImageFormat doesn't support animations then the given list of frames should only contain one entry, otherwise an IllegalArgumentException will be thrown.
    
    Overrides:
    
    writeImage in class PngFormat
    
    Parameters:
    
    frames - List of BufferedImages to render into an image
    
    out - The OutputStream to which the image will be written
    
    frameRate - The frame rate to use if this is an animation.
    
    Throws:
    
    IOException - if there was an error writing to the output stream