ingenias.editor.editiondialog.JMultiLineToolTip Maven / Gradle / Ivy

package ingenias.editor.editiondialog;


//JMultiLineToolTip.java
import java.awt.Dimension;
import java.awt.Font;
import java.awt.Graphics;

import javax.swing.CellRendererPane;
import javax.swing.JComponent;
import javax.swing.JTextArea;
import javax.swing.JToolTip;
import javax.swing.plaf.ComponentUI;
import javax.swing.plaf.basic.BasicToolTipUI;


/**
 * @author Zafir Anjum
 *  taken from http://code.google.com/p/simbrain/source/browse/branches/groupUpdateRefactor2012/src/org/simbrain/util/JMultiLineToolTip.java?r=2544
 */


public class JMultiLineToolTip extends JToolTip {
	/** */
	private static final String uiClassID = "ToolTipUI";

	/** */
	private String tipText;
	/** */
	private JComponent component;

	/** */
	public JMultiLineToolTip() {
		updateUI();
	}

	/** */
	public void updateUI() {
		setUI(MultiLineToolTipUI.createUI(this));
	}

	/** @param columns number of columns */
	public void setColumns(final int columns) {
		this.columns = columns;
		this.fixedwidth = 0;
	}

	/** @return columns */
	public int getColumns() {
		return columns;
	}

	/** @param width width */
	public void setFixedWidth(final int width) {
		this.fixedwidth = width;
		this.columns = 0;
	}

	/** @return ret */
	public int getFixedWidth() {
		return fixedwidth;
	}
	/** */
	protected int columns = 80;
	/** */
	protected int fixedwidth = 0;
}


/** */
class MultiLineToolTipUI extends BasicToolTipUI {
	/** */
	private static MultiLineToolTipUI sharedInstance = new MultiLineToolTipUI();
	/** */
	private Font smallFont;
	/** */
	private static JToolTip tip;
	/** */
	protected CellRendererPane rendererPane;
	/** */
	private static JTextArea textArea;

	/** @param c component
	 *  @return ret component*/
	public static ComponentUI createUI(final JComponent c) {
		return sharedInstance;
	}
	/** */
	public MultiLineToolTipUI() {
		super();
	}
	/** @param component */
	public void installUI(JComponent c) {
		super.installUI(c);
		tip = (JToolTip) c;
		rendererPane = new CellRendererPane();
		c.add(rendererPane);
	}

	/** @param c component */
	public void uninstallUI(final JComponent c) {
		super.uninstallUI(c);

		c.remove(rendererPane);
		rendererPane = null;
	}

	/** @param g graphics
	 *  @param c component
	 *   */
	public void paint(final Graphics g, final JComponent c) {
		Dimension size = c.getSize();
		textArea.setBackground(c.getBackground());
		rendererPane.paintComponent(g, textArea, c, 1, 1,
				size.width - 1, size.height - 1, true);
	}

	/** @param c component
	 *  @return ret dimension */
	public Dimension getPreferredSize(final JComponent c) {
		String tipText = ((JToolTip) c).getTipText();
		if (tipText == null) {
			return new Dimension(0, 0);
		}
		textArea = new JTextArea(tipText);
		rendererPane.removeAll();
		rendererPane.add(textArea);
		textArea.setWrapStyleWord(true);
		int width = ((JMultiLineToolTip) c).getFixedWidth();
		int columns = ((JMultiLineToolTip) c).getColumns();

		if (columns > 0) {
			if (tipText.length()<80)
				textArea.setColumns(40);
			else
				textArea.setColumns(columns);
			textArea.setSize(0, 0);
			textArea.setLineWrap(true);
			textArea.setSize(textArea.getPreferredSize());
		} else if (width > 0) {
			textArea.setLineWrap(true);
			Dimension d = textArea.getPreferredSize();
			d.width = width;
			d.height++;
			textArea.setSize(d);
		} else {
			textArea.setLineWrap(false);
		}


		Dimension dim = textArea.getPreferredSize();

		dim.height += 1;
		dim.width += 1;
		return dim;
	}

	/** @param c component
	 *  @return ret dimension */
	public Dimension getMinimumSize(final JComponent c) {
		return getPreferredSize(c);
	}

	/** @param c component
	 *  @return ret dimension */
	public Dimension getMaximumSize(final JComponent c) {
		return getPreferredSize(c);
	}
}