/*******************************************************************************
* Copyright (c) 2000, 2015 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.ui.internal.forms.widgets;
import java.util.Hashtable;
import org.eclipse.swt.graphics.FontMetrics;
import org.eclipse.swt.graphics.GC;
import org.eclipse.swt.graphics.Rectangle;
/**
* This segment serves as break within a paragraph. It has no data -
* just starts a new line and resets the locator.
*/
public class BreakSegment extends ParagraphSegment {
@Override
public boolean advanceLocator(GC gc, int wHint, Locator locator,
Hashtable<String, Object> objectTable, boolean computeHeightOnly) {
if (locator.rowHeight==0) {
FontMetrics fm = gc.getFontMetrics();
locator.rowHeight = fm.getHeight();
}
if (computeHeightOnly) locator.collectHeights();
locator.resetCaret();
locator.width = locator.x;
locator.y += locator.rowHeight;
locator.rowHeight = 0;
locator.leading = 0;
return true;
}
@Override
public void paint(GC gc, boolean hover, Hashtable<String, Object> resourceTable, boolean selected, SelectionData selData, Rectangle repaintRegion) {
//nothing to paint
}
@Override
public boolean contains(int x, int y) {
return false;
}
@Override
public boolean intersects(Rectangle rect) {
return false;
}
@Override
public void layout(GC gc, int width, Locator locator, Hashtable<String, Object> ResourceTable,
boolean selected) {
locator.resetCaret();
if (locator.rowHeight==0) {
FontMetrics fm = gc.getFontMetrics();
locator.rowHeight = fm.getHeight();
}
locator.y += locator.rowHeight;
locator.rowHeight = 0;
locator.rowCounter++;
}
@Override
public void computeSelection(GC gc, Hashtable<String, Object> resourceTable, SelectionData selData) {
selData.markNewLine();
}
}