bundles/org.eclipse.draw2d/src/org/eclipse/draw2d/text/NestedLine.java

/*******************************************************************************
 * Copyright (c) 2004, 2010 IBM Corporation and others.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:
 *     IBM Corporation - initial API and implementation
 *******************************************************************************/

package org.eclipse.draw2d.text;

/**
 * @since 3.1
 */
public class NestedLine extends LineBox {

	InlineFlow owner;
	private LineRoot root;

	NestedLine(InlineFlow owner) {
		this.owner = owner;
	}

	/**
	 * @see org.eclipse.draw2d.text.FlowBox#containsPoint(int, int)
	 */
	public boolean containsPoint(int x, int y) {
		// $TODO should contains use LineRoot?
		return x >= getX() && x < getX() + getWidth()
				&& y >= getBaseline() - getAscentWithBorder()
				&& y < getBaseline() + getDescentWithBorder();
	}

	int getAscentWithBorder() {
		return contentAscent + FlowUtilities.getBorderAscent(owner);
	}

	int getDescentWithBorder() {
		return contentDescent + FlowUtilities.getBorderDescent(owner);
	}

	/**
	 * @see org.eclipse.draw2d.text.FlowBox#getBaseline()
	 */
	public int getBaseline() {
		return root.getBaseline();
	}

	LineRoot getLineRoot() {
		return root;
	}

	// int getVisibleAscent() {
	// return contentAscent + FlowUtilities.getBorderAscent(owner);
	// }
	//
	// int getVisibleDescent() {
	// return contentDescent + FlowUtilities.getBorderDescent(owner);
	// }

	/**
	 * Returns the outer ascent of this box. The outer ascent is the ascent
	 * above the baseline including the border size and margin. This is used
	 * when adding content into a LineBox. The linebox's own border must be
	 * drawn around the children.
	 * 
	 * @return the outer ascent of this box
	 */
	public int getOuterAscent() {
		return contentAscent + FlowUtilities.getBorderAscentWithMargin(owner);
	}

	/**
	 * Returns the outer descent of this box. The outer descent is the space
	 * below the baseline including the border size and margin. This is used
	 * when adding content into a LineBox. The linebox's own border must be
	 * drawn around the children.
	 * 
	 * @return the outer descent of this box
	 */
	public int getOuterDescent() {
		return contentDescent + FlowUtilities.getBorderDescentWithMargin(owner);
	}

	void setLineRoot(LineRoot root) {
		this.root = root;
		for (int i = 0; i < fragments.size(); i++)
			((FlowBox) fragments.get(i)).setLineRoot(root);
	}

	/**
	 * @see org.eclipse.draw2d.text.CompositeBox#setLineTop(int)
	 */
	public void setLineTop(int top) {
		throw new RuntimeException("not supported"); //$NON-NLS-1$
	}

}