Example usage for javax.swing.text JTextComponent getInsets

Introduction

In this page you can find the example usage for javax.swing.text JTextComponent getInsets.

Prototype

@BeanProperty(expert = true)
public Insets getInsets() 

Source Link

Document

If a border has been set on this component, returns the border's insets; otherwise calls super.getInsets.

Usage

From source file:Main.java

/**
 * Returns the {@link Dimension} for the given {@link JTextComponent}
 * subclass that will show the whole word wrapped text in the given width.
 * It won't work for styled text of varied size or style, it's assumed that
 * the whole text is rendered with the {@link JTextComponent}s font.
 *
 * @param textComponent the {@link JTextComponent} to calculate the {@link Dimension} for
 * @param width the width of the resulting {@link Dimension}
 * @param text the {@link String} which should be word wrapped
 * @return The calculated {@link Dimension}
 *//* ww w. ja  va2s .  com*/
public static Dimension getWordWrappedTextDimension(JTextComponent textComponent, int width, String text) {
    if (textComponent == null) {
        throw new IllegalArgumentException("textComponent cannot be null");
    }
    if (width < 1) {
        throw new IllegalArgumentException("width must be 1 or greater");
    }
    if (text == null) {
        text = textComponent.getText();
    }
    if (text.isEmpty()) {
        return new Dimension(width, 0);
    }

    FontMetrics metrics = textComponent.getFontMetrics(textComponent.getFont());
    FontRenderContext rendererContext = metrics.getFontRenderContext();
    float formatWidth = width - textComponent.getInsets().left - textComponent.getInsets().right;

    int lines = 0;
    String[] paragraphs = text.split("\n");
    for (String paragraph : paragraphs) {
        if (paragraph.isEmpty()) {
            lines++;
        } else {
            AttributedString attributedText = new AttributedString(paragraph);
            attributedText.addAttribute(TextAttribute.FONT, textComponent.getFont());
            AttributedCharacterIterator charIterator = attributedText.getIterator();
            LineBreakMeasurer lineMeasurer = new LineBreakMeasurer(charIterator, rendererContext);

            lineMeasurer.setPosition(charIterator.getBeginIndex());
            while (lineMeasurer.getPosition() < charIterator.getEndIndex()) {
                lineMeasurer.nextLayout(formatWidth);
                lines++;
            }
        }
    }

    return new Dimension(width,
            metrics.getHeight() * lines + textComponent.getInsets().top + textComponent.getInsets().bottom);
}

---

From source file:Main.java

public TextPrompt(String text, JTextComponent component) {
    this.component = component;
    document = component.getDocument();/*from ww w .ja  va2  s.  c om*/

    setText(text);
    setFont(component.getFont());
    setBorder(new EmptyBorder(component.getInsets()));

    component.addFocusListener(this);
    document.addDocumentListener(this);

    component.add(this);
}

---