com.iizigo.image

Class SingleImageControl

java.lang.Object

Composite

com.iizigo.image.SingleImageControl

All Implemented Interfaces:

IImageInfoChanged, IZoomCapable

public class SingleImageControl
extends Composite
implements IImageInfoChanged, IZoomCapable

The image control that can show the zoom level.

Author:

Christopher Mindus

Constructor Summary

Constructors

Constructor and Description
SingleImageControl(Composite parent, int style, IFile file, Rectangle rect) Creates the image control from a file with zoom 1.
SingleImageControl(Composite parent, int style, ImageInfo imageInfo, Rectangle rect) Creates the image control from a file with zoom 1.
SingleImageControl(Composite parent, int style, int zoom, AssetReference ref, ILayoutListener layout) Creates the image control with a zoom level.
SingleImageControl(Composite parent, int style, int zoom, AssetReference ref, ILayoutListener layout, Rectangle rect) Creates the image control with a zoom level.

Method Summary

Modifier and Type	Method and Description
Point	computeSize(int wHint, int hHint, boolean changed) Computes the size.
void	onChanged(ImageInfo info) Called to inform that new data is available in the instance of ImageInfo.
void	paintControl(PaintEvent e) Paints the canvas foreground.
void	scaleToMax(int mcx, int mcy) Scales down the image to a maximum size.
void	setZoom(double zoom) Sets the zoom level (1-10).
void	widgetDisposed(DisposeEvent e) Widget is disposed.

Methods inherited from class java.lang.Object

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

Constructor Detail

SingleImageControl

public SingleImageControl(Composite parent,
                          int style,
                          IFile file,
                          Rectangle rect)

Creates the image control from a file with zoom 1.

Parameters:

parent - Parent composite.

style - The control style SWT.*.

file - File.

rect - Partial rectangle when not null.

SingleImageControl

public SingleImageControl(Composite parent,
                          int style,
                          ImageInfo imageInfo,
                          Rectangle rect)

Creates the image control from a file with zoom 1.

Parameters:

parent - Parent composite.

style - The control style SWT.*.

imageInfo - ImageInfo for image, will be released when control is disposed of.

rect - Partial rectangle when not null.

SingleImageControl

public SingleImageControl(Composite parent,
                          int style,
                          int zoom,
                          AssetReference ref,
                          ILayoutListener layout)

Creates the image control with a zoom level.

SingleImageControl

public SingleImageControl(Composite parent,
                          int style,
                          int zoom,
                          AssetReference ref,
                          ILayoutListener layout,
                          Rectangle rect)

Creates the image control with a zoom level.

Method Detail

onChanged

public void onChanged(ImageInfo info)

Called to inform that new data is available in the instance of ImageInfo.

Specified by:

onChanged in interface IImageInfoChanged

setZoom

public void setZoom(double zoom)

Sets the zoom level (1-10).

Specified by:

setZoom in interface IZoomCapable

scaleToMax

public void scaleToMax(int mcx,
                       int mcy)

Scales down the image to a maximum size. An appropriate zoom factor is calculated.

widgetDisposed

public void widgetDisposed(DisposeEvent e)

Widget is disposed.

computeSize

public Point computeSize(int wHint,
                         int hHint,
                         boolean changed)

Computes the size.

paintControl

public void paintControl(PaintEvent e)

Paints the canvas foreground.