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jfreechart example source code file (SWTPaintCanvas.java)
The jfreechart SWTPaintCanvas.java source code/* =========================================================== * JFreeChart : a free chart library for the Java(tm) platform * =========================================================== * * (C) Copyright 2000-2007, by Object Refinery Limited and Contributors. * * Project Info: http://www.jfree.org/jfreechart/index.html * * This library is free software; you can redistribute it and/or modify it * under the terms of the GNU Lesser General Public License as published by * the Free Software Foundation; either version 2.1 of the License, or * (at your option) any later version. * * This library is distributed in the hope that it will be useful, but * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public * License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, * USA. * * [Java is a trademark or registered trademark of Sun Microsystems, Inc. * in the United States and other countries.] * * ------------------- * SwtPaintCanvas.java * ------------------- * (C) Copyright 2000-2007, by Object Refinery Limited. * * Original Author: Henry Proudhon (henry.proudhon AT ensmp.fr); * Contributor(s): David Gilbert (for Object Refinery Limited); * * Changes * ------- * 04-Aug-2006 : New class (HP); * 25-Oct-2007 : Fixed Eclipse warnings (DG); * */ package org.jfree.experimental.swt; import org.eclipse.swt.SWT; import org.eclipse.swt.events.PaintEvent; import org.eclipse.swt.events.PaintListener; import org.eclipse.swt.graphics.Color; import org.eclipse.swt.widgets.Canvas; import org.eclipse.swt.widgets.Composite; /** * A paint canvas. */ public class SWTPaintCanvas extends Canvas { private Color myColor; /** * Creates a new instance. * * @param parent the parent. * @param style the style. * @param color the color. */ public SWTPaintCanvas(Composite parent, int style, Color color) { this(parent, style); setColor(color); } /** * Creates a new instance. * * @param parent the parent. * @param style the style. */ public SWTPaintCanvas(Composite parent, int style) { super(parent, style); addPaintListener(new PaintListener() { public void paintControl(PaintEvent e) { e.gc.setForeground(e.gc.getDevice().getSystemColor( SWT.COLOR_BLACK)); e.gc.setBackground(SWTPaintCanvas.this.myColor); e.gc.fillRectangle(getClientArea()); e.gc.drawRectangle(getClientArea().x, getClientArea().y, getClientArea().width - 1, getClientArea().height - 1); } }); } /** * Sets the color. * * @param color the color. */ public void setColor(Color color) { if (this.myColor != null) { this.myColor.dispose(); } //this.myColor = new Color(getDisplay(), color.getRGB()); this.myColor = color; } /** * Returns the color. * * @return The color. */ public Color getColor() { return this.myColor; } /** * Overridden to do nothing. * * @param c the color. */ public void setBackground(Color c) { return; } /** * Overridden to do nothing. * * @param c the color. */ public void setForeground(Color c) { return; } /** * Frees resources. */ public void dispose() { this.myColor.dispose(); } } Other jfreechart examples (source code examples)Here is a short list of links related to this jfreechart SWTPaintCanvas.java source code file: |
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