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• LineAttributes.java

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org.eclipse.swt.graphics.LineAttributes Maven / Gradle / Ivy

/*******************************************************************************
 * Copyright (c) 2000, 2011 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.swt.graphics;

import org.eclipse.swt.*;

/**
 * LineAttributes defines a set of line attributes that
 * can be modified in a GC.
 * 

 * Application code does not need to explicitly release the
 * resources managed by each instance when those instances are no longer
 * required, and thus no dispose() method is provided.
 * 
 *
 * @see GC#getLineAttributes()
 * @see GC#setLineAttributes(LineAttributes)
 * @see Sample code and further information
 *
 * @since 3.3
 */
public class LineAttributes {

	/**
	 * The line width.
	 */
	public float width;

	/**
	 * The line style.
	 *
	 * @see org.eclipse.swt.SWT#LINE_CUSTOM
	 * @see org.eclipse.swt.SWT#LINE_DASH
	 * @see org.eclipse.swt.SWT#LINE_DASHDOT
	 * @see org.eclipse.swt.SWT#LINE_DASHDOTDOT
	 * @see org.eclipse.swt.SWT#LINE_DOT
	 * @see org.eclipse.swt.SWT#LINE_SOLID
	 */
	public int style;

	/**
	 * The line cap style.
	 *
	 * @see org.eclipse.swt.SWT#CAP_FLAT
	 * @see org.eclipse.swt.SWT#CAP_ROUND
	 * @see org.eclipse.swt.SWT#CAP_SQUARE
	 */
	public int cap;

	/**
	 * The line join style.
	 *
	 * @see org.eclipse.swt.SWT#JOIN_BEVEL
	 * @see org.eclipse.swt.SWT#JOIN_MITER
	 * @see org.eclipse.swt.SWT#JOIN_ROUND
	 */
	public int join;

	/**
	 * The line dash style for SWT.LINE_CUSTOM.
	 */
	public float[] dash;

	/**
	 * The line dash style offset for SWT.LINE_CUSTOM.
	 */
	public float dashOffset;

	/**
	 * The line miter limit.
	 */
	public float miterLimit;

/**
 * Create a new line attributes with the specified line width.
 *
 * @param width the line width
 */
public LineAttributes(float width) {
	this(width, SWT.CAP_FLAT, SWT.JOIN_MITER, SWT.LINE_SOLID, null, 0, 10);
}

/**
 * Create a new line attributes with the specified line cap, join and width.
 *
 * @param width the line width
 * @param cap the line cap style
 * @param join the line join style
 */
public LineAttributes(float width, int cap, int join) {
	this(width, cap, join, SWT.LINE_SOLID, null, 0, 10);
}

/**
 * Create a new line attributes with the specified arguments.
 *
 * @param width the line width
 * @param cap the line cap style
 * @param join the line join style
 * @param style the line style
 * @param dash the line dash style
 * @param dashOffset the line dash style offset
 * @param miterLimit the line miter limit
 */
public LineAttributes(float width, int cap, int join, int style, float[] dash, float dashOffset, float miterLimit) {
	this.width = width;
	this.cap = cap;
	this.join = join;
	this.style = style;
	this.dash = dash;
	this.dashOffset = dashOffset;
	this.miterLimit = miterLimit;
}

/**
 * Compares the argument to the receiver, and returns true
 * if they represent the same object using a class
 * specific comparison.
 *
 * @param object the object to compare with this object
 * @return true if the object is the same as this object and false otherwise
 *
 * @see #hashCode()
 */
@Override
public boolean equals (Object object) {
	if (object == this) return true;
	if (!(object instanceof LineAttributes)) return false;
	LineAttributes p = (LineAttributes)object;
	if (p.width != width) return false;
	if (p.cap != cap) return false;
	if (p.join != join) return false;
	if (p.style != style) return false;
	if (p.dashOffset != dashOffset) return false;
	if (p.miterLimit != miterLimit) return false;
	if (p.dash != null && dash != null) {
		if (p.dash.length != dash.length) return false;
		for (int i = 0; i < dash.length; i++) {
			if (p.dash[i] != dash[i]) return false;
		}
	} else {
		if (p.dash != null || dash != null) return false;
	}
	return true;
}

/**
 * Returns an integer hash code for the receiver. Any two
 * objects that return true when passed to
 * equals must return the same value for this
 * method.
 *
 * @return the receiver's hash
 *
 * @see #equals(Object)
 */
@Override
public int hashCode () {
	int hashCode = Float.floatToIntBits(width);
	hashCode = 31 * hashCode + cap;
	hashCode = 31 * hashCode + join;
	hashCode = 31 * hashCode + style;
	hashCode = 31 * hashCode + Float.floatToIntBits(dashOffset);
	hashCode = 31 * hashCode + Float.floatToIntBits(miterLimit);
	if (dash != null) {
		for (int i = 0; i < dash.length; i++) {
			hashCode = 31 * hashCode + Float.floatToIntBits(dash[i]);
		}
	}
	return hashCode;
}

}