Java Image.setAlternateText方法代码示例

import com.vaadin.ui.Image; //导入方法依赖的package包/类
public void addWoundAtPosition(WoundPosition woundPosition) {
	if (!markedWounds.containsKey(woundPosition)) {
		
		Image image = getImage(WOUND_INDICATOR);
		
		if (woundManager.getWoundAtWoundPosition(woundPosition).getEndDate() != null) {
			image = getImage(WOUND_HEALED_INDICATOR);
		}
		
		image.addClickListener(woundClickListener);
		image.setDescription(woundPosition.getDescription());
		image.setAlternateText(woundPosition.getDescription());

		// Removing half the size of the indicator to put the click position in the middle of the indicator
		float correctedXPos = (float) scaleFactor*(woundPosition.getXPosition() - (image.getWidth() / 2));
		float correctedYPos = (float) scaleFactor*(woundPosition.getYPosition() - (image.getHeight() / 2));

		ComponentPosition imagePosition = new ComponentPosition();
		imagePosition.setLeft((float)correctedXPos, Unit.PIXELS);
		imagePosition.setTop((float)correctedYPos, Unit.PIXELS);
		image.setData(woundPosition);

		markedWounds.put(woundPosition, image);
		addComponent(image);
		setPosition(image, imagePosition);
	}
}
 

import com.vaadin.ui.Image; //导入方法依赖的package包/类
private void addLogo(final VerticalLayout viewLayout)
{
	final VerticalLayout layout = new VerticalLayout();
	HorizontalLayout buttons = getLoginAccountButtons();
	HorizontalLayout buttonLayout = new HorizontalLayout();
	buttonLayout.setWidth("100%");
	buttonLayout.addComponent(buttons);
	buttonLayout.setComponentAlignment(buttons, Alignment.TOP_RIGHT);

	layout.addComponent(buttonLayout);

	// So the logo
	final HorizontalLayout logoLayout = new HorizontalLayout();
	logoLayout.setWidth("100%");

	final String basepath = VaadinService.getCurrent().getBaseDirectory().getAbsolutePath();
	final FileResource resource = new FileResource(new File(basepath + "/images/scoutmaster-logo.png"));

	final Image image = new Image(null, resource);
	image.setAlternateText("Scoutmaster Logo");
	logoLayout.addComponent(image);

	layout.addComponent(logoLayout);
	layout.setComponentAlignment(logoLayout, Alignment.TOP_LEFT);

	viewLayout.addComponent(layout);

}
 

import com.vaadin.ui.Image; //导入方法依赖的package包/类
public LoginView()
{
	setSizeFull();

	// The view root layout
	final VerticalLayout viewLayout = new VerticalLayout();
	viewLayout.setSizeFull();
	// viewLayout.setStyleName(ValoTheme.LAYOUT_BLACK);

	final HorizontalLayout logo = new HorizontalLayout();
	logo.setWidth("100%");

	final String basepath = VaadinService.getCurrent().getBaseDirectory().getAbsolutePath();
	final FileResource resource = new FileResource(new File(basepath + "/images/scoutmaster-logo.png"));

	final Image image = new Image(null, resource);
	image.setAlternateText("Scoutmaster Logo");
	logo.addComponent(image);
	logo.setComponentAlignment(image, Alignment.TOP_RIGHT);
	viewLayout.addComponent(logo);

	final VerticalLayout fields = new VerticalLayout();
	fields.setSpacing(true);
	fields.setMargin(new MarginInfo(true, true, true, true));
	fields.setSizeUndefined();

	// Add both to a panel
	final Label label = new Label("<H1>Login to Scoutmaster</H1>");
	label.setContentMode(ContentMode.HTML);

	fields.addComponent(label);

	// Create the user input field
	this.usernameField = new TextField("Username:");
	this.usernameField.setWidth("300px");
	this.usernameField.setRequired(true);
	this.usernameField.setInputPrompt("Your username");
	this.usernameField.setImmediate(true);
	this.usernameField.setInvalidAllowed(false);
	fields.addComponent(this.usernameField);

	// Create the password input field
	this.passwordField = new PasswordField("Password:");
	this.passwordField.setWidth("300px");

	this.passwordField.setRequired(true);
	this.passwordField.setNullRepresentation("");

	fields.addComponent(this.passwordField);

	// Buttons
	final HorizontalLayout buttons = new HorizontalLayout();
	buttons.setSpacing(true);

	// Create login button
	this.loginButton = new Button("Login", new ClickEventLogged.ClickAdaptor(this));
	this.loginButton.setClickShortcut(KeyCode.ENTER);
	this.loginButton.addStyleName(Reindeer.BUTTON_DEFAULT);
	buttons.addComponent(this.loginButton);
	buttons.setComponentAlignment(this.loginButton, Alignment.MIDDLE_LEFT);

	this.forgottenButton = new Button("Forgotten Password", new ClickEventLogged.ClickAdaptor(this));
	buttons.addComponent(this.forgottenButton);
	buttons.setComponentAlignment(this.forgottenButton, Alignment.MIDDLE_RIGHT);
	fields.addComponent(buttons);

	viewLayout.addComponent(fields);
	viewLayout.setComponentAlignment(fields, Alignment.MIDDLE_CENTER);

	setCompositionRoot(viewLayout);

	viewLayout.addComponent(fields);
}