ej.widget.basic

Class ImageWidget

java.lang.Object

ej.mwt.Widget

ej.widget.basic.ImageWidget

Direct Known Subclasses:

ImageButton

public class ImageWidget
extends ej.mwt.Widget

A widget that displays a resource image.

The widget holds a path to the image. The actual image is allocated only when the widget is attached. It is also closed when the widget is detached.

Field Summary

Fields inherited from class ej.mwt.Widget

NO_CONSTRAINT

Constructor Summary

Constructors

Modifier	Constructor and Description
	ImageWidget(java.lang.String imagePath) Creates an image widget with the resource path of the image to display.
protected	ImageWidget(java.lang.String imagePath, boolean enabled) Creates an image widget with the resource path of the image to display and its enabled state.

Method Summary

Modifier and Type	Method and Description
protected void	computeContentOptimalSize(ej.mwt.util.Size size)
protected void	onAttached()
protected void	onDetached()
protected void	renderContent(ej.microui.display.GraphicsContext g, int contentWidth, int contentHeight)
void	setImagePath(java.lang.String imagePath) Sets the image path.

Methods inherited from class ej.mwt.Widget

addClassSelector, contains, containsWidget, getAbsoluteX, getAbsoluteY, getContentBounds, getDesktop, getHeight, getParent, getStyle, getWidgetAt, getWidth, getX, getY, handleEvent, hasClassSelector, isAttached, isEnabled, isInState, isShown, isTransparent, onHidden, onLaidOut, onShown, removeAllClassSelectors, removeClassSelector, render, requestLayOut, requestRender, requestRender, setClassSelectors, setEnabled, setPosition, setStyle, updateStyle

Methods inherited from class java.lang.Object

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

Constructor Detail

ImageWidget

public ImageWidget(java.lang.String imagePath)

Creates an image widget with the resource path of the image to display.

Parameters:

imagePath - the resource path of the image to display.

Throws:

java.lang.IllegalArgumentException - if the image cannot be loaded.

See Also:

ResourceImage.canLoadImage(String)

ImageWidget

protected ImageWidget(java.lang.String imagePath,
                      boolean enabled)

Creates an image widget with the resource path of the image to display and its enabled state.

Parameters:

imagePath - the resource path of the image to display.

enabled - true if this image widget is to be enabled, false otherwise.

Throws:

java.lang.IllegalArgumentException - if the image cannot be loaded.

See Also:

ResourceImage.canLoadImage(String)

Method Detail

onAttached

protected void onAttached()

Overrides:

onAttached in class ej.mwt.Widget

onDetached

protected void onDetached()

Overrides:

onDetached in class ej.mwt.Widget

setImagePath

public void setImagePath(java.lang.String imagePath)

Sets the image path.

Parameters:

imagePath - the resource path of the image to display.

Throws:

java.lang.IllegalArgumentException - if the image cannot be loaded.

See Also:

ResourceImage.canLoadImage(String)

renderContent

protected void renderContent(ej.microui.display.GraphicsContext g,
                             int contentWidth,
                             int contentHeight)

Specified by:

renderContent in class ej.mwt.Widget

computeContentOptimalSize

protected void computeContentOptimalSize(ej.mwt.util.Size size)

Specified by:

computeContentOptimalSize in class ej.mwt.Widget