ej.widget.basic

Class Label

java.lang.Object

ej.mwt.Widget

ej.widget.basic.Label

Direct Known Subclasses:

Button

public class Label
extends Widget

A label is a widget that displays a text.

This example shows a simple label:

 Label label = new Label("Hello World");
 

This example shows a styled label:

 Label label = new Label("Hello World");

 CascadingStylesheet stylesheet = new CascadingStylesheet();
 desktop.setStylesheet(stylesheet);

 EditableStyle labelStyle = stylesheet.getSelectorStyle(new TypeSelector(Label.class));
 labelStyle.setColor(Colors.NAVY);
 labelStyle.setBackground(new RectangularBackground(Colors.CYAN));
 labelStyle.setFont(Font.getFont("/fonts/source_sans_pro_24.ejf"));
 

Field Summary

Fields inherited from class ej.mwt.Widget

NO_CONSTRAINT

Constructor Summary

Constructors

Modifier	Constructor and Description
	Label() Creates a label with an empty text.
	Label(String text) Creates a label with the given text to display.
protected	Label(String text, boolean enabled) Creates a label with the given text to display and its enabled state.

Method Summary

Modifier and Type	Method and Description
protected void	computeContentOptimalSize(Size size) Computes the optimal size of the widget.
String	getText() Gets the text displayed on this label.
protected void	renderContent(GraphicsContext g, int contentWidth, int contentHeight) Renders the content of the widget without the border, margin and padding specified in the style.
void	setText(String text) Sets the text to display on this label.

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, onAttached, onDetached, 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

Label

public Label()

Creates a label with an empty text.

Label

public Label(String text)

Creates a label with the given text to display.

Parameters:

text - the text to display.

Label

protected Label(String text,
                boolean enabled)

Creates a label with the given text to display and its enabled state.

Parameters:

text - the text to display.

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

Method Detail

computeContentOptimalSize

protected void computeContentOptimalSize(Size size)

Description copied from class: Widget

Computes the optimal size of the widget.

This method does not consider the border, margin, padding and dimension specified in the style.

The given size is the available size for this widget in its parent. A width or a height equal to Widget#NO_CONSTRAINT means that there is no constraint on this dimension.

The given size is modified to set the optimal size.

Specified by:

computeContentOptimalSize in class Widget

Parameters:

size - the size available for the content.

getText

public String getText()

Gets the text displayed on this label.

Returns:

the text displayed on this label.

renderContent

protected void renderContent(GraphicsContext g,
                             int contentWidth,
                             int contentHeight)

Description copied from class: Widget

Renders the content of the widget without the border, margin and padding specified in the style.

The given graphics context is translated and clipped according to the given bounds (the border, margin and padding are applied on this graphics context before).

Specified by:

renderContent in class Widget

Parameters:

g - the graphics context where to render the content of the widget.

contentWidth - the width of the content area.

contentHeight - the height of the content area.

setText

public void setText(String text)

Sets the text to display on this label.

Parameters:

text - the text to display on this label.