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/* ===========================================================
* JFreeChart : a free chart library for the Java(tm) platform
* ===========================================================
*
* (C) Copyright 2000-2011, 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.
*
* [Oracle and Java are registered trademarks of Oracle and/or its affiliates.
* Other names may be trademarks of their respective owners.]
*
* ---------------
* ChartPanel.java
* ---------------
* (C) Copyright 2000-2009, by Object Refinery Limited and Contributors.
*
* Original Author: David Gilbert (for Object Refinery Limited);
* Contributor(s): Andrzej Porebski;
* Soren Caspersen;
* Jonathan Nash;
* Hans-Jurgen Greiner;
* Andreas Schneider;
* Daniel van Enckevort;
* David M O'Donnell;
* Arnaud Lelievre;
* Matthias Rose;
* Onno vd Akker;
* Sergei Ivanov;
* Ulrich Voigt - patch 2686040;
* Alessandro Borges - patch 1460845;
* Martin Hoeller;
*
* Changes (from 28-Jun-2001)
* --------------------------
* 28-Jun-2001 : Integrated buffering code contributed by S???ren
* Caspersen (DG);
* 18-Sep-2001 : Updated header and fixed DOS encoding problem (DG);
* 22-Nov-2001 : Added scaling to improve display of charts in small sizes (DG);
* 26-Nov-2001 : Added property editing, saving and printing (DG);
* 11-Dec-2001 : Transferred saveChartAsPNG method to new ChartUtilities
* class (DG);
* 13-Dec-2001 : Added tooltips (DG);
* 16-Jan-2002 : Added an optional crosshair, based on the implementation by
* Jonathan Nash. Renamed the tooltips class (DG);
* 23-Jan-2002 : Implemented zooming based on code by Hans-Jurgen Greiner (DG);
* 05-Feb-2002 : Improved tooltips setup. Renamed method attemptSaveAs()
* --> doSaveAs() and made it public rather than private (DG);
* 28-Mar-2002 : Added a new constructor (DG);
* 09-Apr-2002 : Changed initialisation of tooltip generation, as suggested by
* Hans-Jurgen Greiner (DG);
* 27-May-2002 : New interactive zooming methods based on code by Hans-Jurgen
* Greiner. Renamed JFreeChartPanel --> ChartPanel, moved
* constants to ChartPanelConstants interface (DG);
* 31-May-2002 : Fixed a bug with interactive zooming and added a way to
* control if the zoom rectangle is filled in or drawn as an
* outline. A mouse drag gesture towards the top left now causes
* an autoRangeBoth() and is a way to undo zooms (AS);
* 11-Jun-2002 : Reinstated handleClick method call in mouseClicked() to get
* crosshairs working again (DG);
* 13-Jun-2002 : Added check for null popup menu in mouseDragged method (DG);
* 18-Jun-2002 : Added get/set methods for minimum and maximum chart
* dimensions (DG);
* 25-Jun-2002 : Removed redundant code (DG);
* 27-Aug-2002 : Added get/set methods for popup menu (DG);
* 26-Sep-2002 : Fixed errors reported by Checkstyle (DG);
* 22-Oct-2002 : Added translation methods for screen <--> Java2D, contributed
* by Daniel van Enckevort (DG);
* 05-Nov-2002 : Added a chart reference to the ChartMouseEvent class (DG);
* 22-Nov-2002 : Added test in zoom method for inverted axes, supplied by
* David M O'Donnell (DG);
* 14-Jan-2003 : Implemented ChartProgressListener interface (DG);
* 14-Feb-2003 : Removed deprecated setGenerateTooltips method (DG);
* 12-Mar-2003 : Added option to enforce filename extension (see bug id
* 643173) (DG);
* 08-Sep-2003 : Added internationalization via use of properties
* resourceBundle (RFE 690236) (AL);
* 18-Sep-2003 : Added getScaleX() and getScaleY() methods (protected) as
* requested by Irv Thomae (DG);
* 12-Nov-2003 : Added zooming support for the FastScatterPlot class (DG);
* 24-Nov-2003 : Minor Javadoc updates (DG);
* 04-Dec-2003 : Added anchor point for crosshair calculation (DG);
* 17-Jan-2004 : Added new methods to set tooltip delays to be used in this
* chart panel. Refer to patch 877565 (MR);
* 02-Feb-2004 : Fixed bug in zooming trigger and added zoomTriggerDistance
* attribute (DG);
* 08-Apr-2004 : Changed getScaleX() and getScaleY() from protected to
* public (DG);
* 15-Apr-2004 : Added zoomOutFactor and zoomInFactor (DG);
* 21-Apr-2004 : Fixed zooming bug in mouseReleased() method (DG);
* 13-Jul-2004 : Added check for null chart (DG);
* 04-Oct-2004 : Renamed ShapeUtils --> ShapeUtilities (DG);
* 11-Nov-2004 : Moved constants back in from ChartPanelConstants (DG);
* 12-Nov-2004 : Modified zooming mechanism to support zooming within
* subplots (DG);
* 26-Jan-2005 : Fixed mouse zooming for horizontal category plots (DG);
* 11-Apr-2005 : Added getFillZoomRectangle() method, renamed
* setHorizontalZoom() --> setDomainZoomable(),
* setVerticalZoom() --> setRangeZoomable(), added
* isDomainZoomable() and isRangeZoomable(), added
* getHorizontalAxisTrace() and getVerticalAxisTrace(),
* renamed autoRangeBoth() --> restoreAutoBounds(),
* autoRangeHorizontal() --> restoreAutoDomainBounds(),
* autoRangeVertical() --> restoreAutoRangeBounds() (DG);
* 12-Apr-2005 : Removed working areas, added getAnchorPoint() method,
* added protected accessors for tracelines (DG);
* 18-Apr-2005 : Made constants final (DG);
* 26-Apr-2005 : Removed LOGGER (DG);
* 01-Jun-2005 : Fixed zooming for combined plots - see bug report
* 1212039, fix thanks to Onno vd Akker (DG);
* 25-Nov-2005 : Reworked event listener mechanism (DG);
* ------------- JFREECHART 1.0.x ---------------------------------------------
* 01-Aug-2006 : Fixed minor bug in restoreAutoRangeBounds() (DG);
* 04-Sep-2006 : Renamed attemptEditChartProperties() -->
* doEditChartProperties() and made public (DG);
* 13-Sep-2006 : Don't generate ChartMouseEvents if the panel's chart is null
* (fixes bug 1556951) (DG);
* 05-Mar-2007 : Applied patch 1672561 by Sergei Ivanov, to fix zoom rectangle
* drawing for dynamic charts (DG);
* 17-Apr-2007 : Fix NullPointerExceptions in zooming for combined plots (DG);
* 24-May-2007 : When the look-and-feel changes, update the popup menu if there
* is one (DG);
* 06-Jun-2007 : Fixed coordinates for drawing buffer image (DG);
* 24-Sep-2007 : Added zoomAroundAnchor flag, and handle clearing of chart
* buffer (DG);
* 25-Oct-2007 : Added default directory attribute (DG);
* 07-Nov-2007 : Fixed (rare) bug in refreshing off-screen image (DG);
* 07-May-2008 : Fixed bug in zooming that triggered zoom for a rectangle
* outside of the data area (DG);
* 08-May-2008 : Fixed serialization bug (DG);
* 15-Aug-2008 : Increased default maxDrawWidth/Height (DG);
* 18-Sep-2008 : Modified creation of chart buffer (DG);
* 18-Dec-2008 : Use ResourceBundleWrapper - see patch 1607918 by
* Jess Thrysoee (DG);
* 13-Jan-2009 : Fixed zooming methods to trigger only one plot
* change event (DG);
* 16-Jan-2009 : Use XOR for zoom rectangle only if useBuffer is false (DG);
* 18-Mar-2009 : Added mouse wheel support (DG);
* 19-Mar-2009 : Added panning on mouse drag support - based on Ulrich
* Voigt's patch 2686040 (DG);
* 26-Mar-2009 : Changed fillZoomRectangle default to true, and only change
* cursor for CTRL-mouse-click if panning is enabled (DG);
* 01-Apr-2009 : Fixed panning, and added different mouse event mask for
* MacOSX (DG);
* 08-Apr-2009 : Added copy to clipboard support, based on patch 1460845
* by Alessandro Borges (DG);
* 09-Apr-2009 : Added overlay support (DG);
* 10-Apr-2009 : Set chartBuffer background to match ChartPanel (DG);
* 05-May-2009 : Match scaling (and insets) in doCopy() (DG);
* 01-Jun-2009 : Check for null chart in mousePressed() method (DG);
* 08-Jun-2009 : Fixed bug in setMouseWheelEnabled() (DG);
* 06-Jul-2009 : Clear off-screen buffer to fully transparent (DG);
* 10-Oct-2011 : localization fix: bug #3353913 (MH);
*/
package org.jfree.chart;
import java.awt.AWTEvent;
import java.awt.AlphaComposite;
import java.awt.Color;
import java.awt.Composite;
import java.awt.Cursor;
import java.awt.Dimension;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.GraphicsConfiguration;
import java.awt.Image;
import java.awt.Insets;
import java.awt.Paint;
import java.awt.Point;
import java.awt.Rectangle;
import java.awt.Toolkit;
import java.awt.Transparency;
import java.awt.datatransfer.Clipboard;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.InputEvent;
import java.awt.event.MouseEvent;
import java.awt.event.MouseListener;
import java.awt.event.MouseMotionListener;
import java.awt.geom.AffineTransform;
import java.awt.geom.Line2D;
import java.awt.geom.Point2D;
import java.awt.geom.Rectangle2D;
import java.awt.print.PageFormat;
import java.awt.print.Printable;
import java.awt.print.PrinterException;
import java.awt.print.PrinterJob;
import java.io.File;
import java.io.IOException;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.io.Serializable;
import java.lang.reflect.Constructor;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.util.EventListener;
import java.util.Iterator;
import java.util.List;
import java.util.ResourceBundle;
import javax.swing.JFileChooser;
import javax.swing.JMenu;
import javax.swing.JMenuItem;
import javax.swing.JOptionPane;
import javax.swing.JPanel;
import javax.swing.JPopupMenu;
import javax.swing.SwingUtilities;
import javax.swing.ToolTipManager;
import javax.swing.event.EventListenerList;
import org.jfree.chart.editor.ChartEditor;
import org.jfree.chart.editor.ChartEditorManager;
import org.jfree.chart.entity.ChartEntity;
import org.jfree.chart.entity.EntityCollection;
import org.jfree.chart.event.ChartChangeEvent;
import org.jfree.chart.event.ChartChangeListener;
import org.jfree.chart.event.ChartProgressEvent;
import org.jfree.chart.event.ChartProgressListener;
import org.jfree.chart.panel.Overlay;
import org.jfree.chart.event.OverlayChangeEvent;
import org.jfree.chart.event.OverlayChangeListener;
import org.jfree.chart.plot.Pannable;
import org.jfree.chart.plot.Plot;
import org.jfree.chart.plot.PlotOrientation;
import org.jfree.chart.plot.PlotRenderingInfo;
import org.jfree.chart.plot.Zoomable;
import org.jfree.chart.util.ResourceBundleWrapper;
import org.jfree.io.SerialUtilities;
import org.jfree.ui.ExtensionFileFilter;
/**
* A Swing GUI component for displaying a {@link JFreeChart} object.
*
* The panel registers with the chart to receive notification of changes to any
* component of the chart. The chart is redrawn automatically whenever this
* notification is received.
*/
public class ChartPanel extends JPanel implements ChartChangeListener,
ChartProgressListener, ActionListener, MouseListener,
MouseMotionListener, OverlayChangeListener, Printable, Serializable {
/** For serialization. */
private static final long serialVersionUID = 6046366297214274674L;
/**
* Default setting for buffer usage. The default has been changed to
* true from version 1.0.13 onwards, because of a severe
* performance problem with drawing the zoom rectangle using XOR (which
* now happens only when the buffer is NOT used).
*/
public static final boolean DEFAULT_BUFFER_USED = true;
/** The default panel width. */
public static final int DEFAULT_WIDTH = 680;
/** The default panel height. */
public static final int DEFAULT_HEIGHT = 420;
/** The default limit below which chart scaling kicks in. */
public static final int DEFAULT_MINIMUM_DRAW_WIDTH = 300;
/** The default limit below which chart scaling kicks in. */
public static final int DEFAULT_MINIMUM_DRAW_HEIGHT = 200;
/** The default limit above which chart scaling kicks in. */
public static final int DEFAULT_MAXIMUM_DRAW_WIDTH = 1024;
/** The default limit above which chart scaling kicks in. */
public static final int DEFAULT_MAXIMUM_DRAW_HEIGHT = 768;
/** The minimum size required to perform a zoom on a rectangle */
public static final int DEFAULT_ZOOM_TRIGGER_DISTANCE = 10;
/** Properties action command. */
public static final String PROPERTIES_COMMAND = "PROPERTIES";
/**
* Copy action command.
*
* @since 1.0.13
*/
public static final String COPY_COMMAND = "COPY";
/** Save action command. */
public static final String SAVE_COMMAND = "SAVE";
/** Print action command. */
public static final String PRINT_COMMAND = "PRINT";
/** Zoom in (both axes) action command. */
public static final String ZOOM_IN_BOTH_COMMAND = "ZOOM_IN_BOTH";
/** Zoom in (domain axis only) action command. */
public static final String ZOOM_IN_DOMAIN_COMMAND = "ZOOM_IN_DOMAIN";
/** Zoom in (range axis only) action command. */
public static final String ZOOM_IN_RANGE_COMMAND = "ZOOM_IN_RANGE";
/** Zoom out (both axes) action command. */
public static final String ZOOM_OUT_BOTH_COMMAND = "ZOOM_OUT_BOTH";
/** Zoom out (domain axis only) action command. */
public static final String ZOOM_OUT_DOMAIN_COMMAND = "ZOOM_DOMAIN_BOTH";
/** Zoom out (range axis only) action command. */
public static final String ZOOM_OUT_RANGE_COMMAND = "ZOOM_RANGE_BOTH";
/** Zoom reset (both axes) action command. */
public static final String ZOOM_RESET_BOTH_COMMAND = "ZOOM_RESET_BOTH";
/** Zoom reset (domain axis only) action command. */
public static final String ZOOM_RESET_DOMAIN_COMMAND = "ZOOM_RESET_DOMAIN";
/** Zoom reset (range axis only) action command. */
public static final String ZOOM_RESET_RANGE_COMMAND = "ZOOM_RESET_RANGE";
/** The chart that is displayed in the panel. */
private JFreeChart chart;
/** Storage for registered (chart) mouse listeners. */
private transient EventListenerList chartMouseListeners;
/** A flag that controls whether or not the off-screen buffer is used. */
private boolean useBuffer;
/** A flag that indicates that the buffer should be refreshed. */
private boolean refreshBuffer;
/** A buffer for the rendered chart. */
private transient Image chartBuffer;
/** The height of the chart buffer. */
private int chartBufferHeight;
/** The width of the chart buffer. */
private int chartBufferWidth;
/**
* The minimum width for drawing a chart (uses scaling for smaller widths).
*/
private int minimumDrawWidth;
/**
* The minimum height for drawing a chart (uses scaling for smaller
* heights).
*/
private int minimumDrawHeight;
/**
* The maximum width for drawing a chart (uses scaling for bigger
* widths).
*/
private int maximumDrawWidth;
/**
* The maximum height for drawing a chart (uses scaling for bigger
* heights).
*/
private int maximumDrawHeight;
/** The popup menu for the frame. */
private JPopupMenu popup;
/** The drawing info collected the last time the chart was drawn. */
private ChartRenderingInfo info;
/** The chart anchor point. */
private Point2D anchor;
/** The scale factor used to draw the chart. */
private double scaleX;
/** The scale factor used to draw the chart. */
private double scaleY;
/** The plot orientation. */
private PlotOrientation orientation = PlotOrientation.VERTICAL;
/** A flag that controls whether or not domain zooming is enabled. */
private boolean domainZoomable = false;
/** A flag that controls whether or not range zooming is enabled. */
private boolean rangeZoomable = false;
/**
* The zoom rectangle starting point (selected by the user with a mouse
* click). This is a point on the screen, not the chart (which may have
* been scaled up or down to fit the panel).
*/
private Point2D zoomPoint = null;
/** The zoom rectangle (selected by the user with the mouse). */
private transient Rectangle2D zoomRectangle = null;
/** Controls if the zoom rectangle is drawn as an outline or filled. */
private boolean fillZoomRectangle = true;
/** The minimum distance required to drag the mouse to trigger a zoom. */
private int zoomTriggerDistance;
/** A flag that controls whether or not horizontal tracing is enabled. */
private boolean horizontalAxisTrace = false;
/** A flag that controls whether or not vertical tracing is enabled. */
private boolean verticalAxisTrace = false;
/** A vertical trace line. */
private transient Line2D verticalTraceLine;
/** A horizontal trace line. */
private transient Line2D horizontalTraceLine;
/** Menu item for zooming in on a chart (both axes). */
private JMenuItem zoomInBothMenuItem;
/** Menu item for zooming in on a chart (domain axis). */
private JMenuItem zoomInDomainMenuItem;
/** Menu item for zooming in on a chart (range axis). */
private JMenuItem zoomInRangeMenuItem;
/** Menu item for zooming out on a chart. */
private JMenuItem zoomOutBothMenuItem;
/** Menu item for zooming out on a chart (domain axis). */
private JMenuItem zoomOutDomainMenuItem;
/** Menu item for zooming out on a chart (range axis). */
private JMenuItem zoomOutRangeMenuItem;
/** Menu item for resetting the zoom (both axes). */
private JMenuItem zoomResetBothMenuItem;
/** Menu item for resetting the zoom (domain axis only). */
private JMenuItem zoomResetDomainMenuItem;
/** Menu item for resetting the zoom (range axis only). */
private JMenuItem zoomResetRangeMenuItem;
/**
* The default directory for saving charts to file.
*
* @since 1.0.7
*/
private File defaultDirectoryForSaveAs;
/** A flag that controls whether or not file extensions are enforced. */
private boolean enforceFileExtensions;
/** A flag that indicates if original tooltip delays are changed. */
private boolean ownToolTipDelaysActive;
/** Original initial tooltip delay of ToolTipManager.sharedInstance(). */
private int originalToolTipInitialDelay;
/** Original reshow tooltip delay of ToolTipManager.sharedInstance(). */
private int originalToolTipReshowDelay;
/** Original dismiss tooltip delay of ToolTipManager.sharedInstance(). */
private int originalToolTipDismissDelay;
/** Own initial tooltip delay to be used in this chart panel. */
private int ownToolTipInitialDelay;
/** Own reshow tooltip delay to be used in this chart panel. */
private int ownToolTipReshowDelay;
/** Own dismiss tooltip delay to be used in this chart panel. */
private int ownToolTipDismissDelay;
/** The factor used to zoom in on an axis range. */
private double zoomInFactor = 0.5;
/** The factor used to zoom out on an axis range. */
private double zoomOutFactor = 2.0;
/**
* A flag that controls whether zoom operations are centred on the
* current anchor point, or the centre point of the relevant axis.
*
* @since 1.0.7
*/
private boolean zoomAroundAnchor;
/**
* The paint used to draw the zoom rectangle outline.
*
* @since 1.0.13
*/
private transient Paint zoomOutlinePaint;
/**
* The zoom fill paint (should use transparency).
*
* @since 1.0.13
*/
private transient Paint zoomFillPaint;
/** The resourceBundle for the localization. */
protected static ResourceBundle localizationResources
= ResourceBundleWrapper.getBundle(
"org.jfree.chart.LocalizationBundle");
/**
* Temporary storage for the width and height of the chart
* drawing area during panning.
*/
private double panW, panH;
/** The last mouse position during panning. */
private Point panLast;
/**
* The mask for mouse events to trigger panning.
*
* @since 1.0.13
*/
private int panMask = InputEvent.CTRL_MASK;
/**
* A list of overlays for the panel.
*
* @since 1.0.13
*/
private List overlays;
/**
* Constructs a panel that displays the specified chart.
*
* @param chart the chart.
*/
public ChartPanel(JFreeChart chart) {
this(
chart,
DEFAULT_WIDTH,
DEFAULT_HEIGHT,
DEFAULT_MINIMUM_DRAW_WIDTH,
DEFAULT_MINIMUM_DRAW_HEIGHT,
DEFAULT_MAXIMUM_DRAW_WIDTH,
DEFAULT_MAXIMUM_DRAW_HEIGHT,
DEFAULT_BUFFER_USED,
true, // properties
true, // save
true, // print
true, // zoom
true // tooltips
);
}
/**
* Constructs a panel containing a chart. The useBuffer flag
* controls whether or not an offscreen BufferedImage is
* maintained for the chart. If the buffer is used, more memory is
* consumed, but panel repaints will be a lot quicker in cases where the
* chart itself hasn't changed (for example, when another frame is moved
* to reveal the panel). WARNING: If you set the useBuffer
* flag to false, note that the mouse zooming rectangle will (in that case)
* be drawn using XOR, and there is a SEVERE performance problem with that
* on JRE6 on Windows.
*
* @param chart the chart.
* @param useBuffer a flag controlling whether or not an off-screen buffer
* is used (read the warning above before setting this
* to false).
*/
public ChartPanel(JFreeChart chart, boolean useBuffer) {
this(chart, DEFAULT_WIDTH, DEFAULT_HEIGHT, DEFAULT_MINIMUM_DRAW_WIDTH,
DEFAULT_MINIMUM_DRAW_HEIGHT, DEFAULT_MAXIMUM_DRAW_WIDTH,
DEFAULT_MAXIMUM_DRAW_HEIGHT, useBuffer,
true, // properties
true, // save
true, // print
true, // zoom
true // tooltips
);
}
/**
* Constructs a JFreeChart panel.
*
* @param chart the chart.
* @param properties a flag indicating whether or not the chart property
* editor should be available via the popup menu.
* @param save a flag indicating whether or not save options should be
* available via the popup menu.
* @param print a flag indicating whether or not the print option
* should be available via the popup menu.
* @param zoom a flag indicating whether or not zoom options should
* be added to the popup menu.
* @param tooltips a flag indicating whether or not tooltips should be
* enabled for the chart.
*/
public ChartPanel(JFreeChart chart,
boolean properties,
boolean save,
boolean print,
boolean zoom,
boolean tooltips) {
this(chart,
DEFAULT_WIDTH,
DEFAULT_HEIGHT,
DEFAULT_MINIMUM_DRAW_WIDTH,
DEFAULT_MINIMUM_DRAW_HEIGHT,
DEFAULT_MAXIMUM_DRAW_WIDTH,
DEFAULT_MAXIMUM_DRAW_HEIGHT,
DEFAULT_BUFFER_USED,
properties,
save,
print,
zoom,
tooltips
);
}
/**
* Constructs a JFreeChart panel.
*
* @param chart the chart.
* @param width the preferred width of the panel.
* @param height the preferred height of the panel.
* @param minimumDrawWidth the minimum drawing width.
* @param minimumDrawHeight the minimum drawing height.
* @param maximumDrawWidth the maximum drawing width.
* @param maximumDrawHeight the maximum drawing height.
* @param useBuffer a flag that indicates whether to use the off-screen
* buffer to improve performance (at the expense of
* memory).
* @param properties a flag indicating whether or not the chart property
* editor should be available via the popup menu.
* @param save a flag indicating whether or not save options should be
* available via the popup menu.
* @param print a flag indicating whether or not the print option
* should be available via the popup menu.
* @param zoom a flag indicating whether or not zoom options should be
* added to the popup menu.
* @param tooltips a flag indicating whether or not tooltips should be
* enabled for the chart.
*/
public ChartPanel(JFreeChart chart, int width, int height,
int minimumDrawWidth, int minimumDrawHeight, int maximumDrawWidth,
int maximumDrawHeight, boolean useBuffer, boolean properties,
boolean save, boolean print, boolean zoom, boolean tooltips) {
this(chart, width, height, minimumDrawWidth, minimumDrawHeight,
maximumDrawWidth, maximumDrawHeight, useBuffer, properties,
true, save, print, zoom, tooltips);
}
/**
* Constructs a JFreeChart panel.
*
* @param chart the chart.
* @param width the preferred width of the panel.
* @param height the preferred height of the panel.
* @param minimumDrawWidth the minimum drawing width.
* @param minimumDrawHeight the minimum drawing height.
* @param maximumDrawWidth the maximum drawing width.
* @param maximumDrawHeight the maximum drawing height.
* @param useBuffer a flag that indicates whether to use the off-screen
* buffer to improve performance (at the expense of
* memory).
* @param properties a flag indicating whether or not the chart property
* editor should be available via the popup menu.
* @param copy a flag indicating whether or not a copy option should be
* available via the popup menu.
* @param save a flag indicating whether or not save options should be
* available via the popup menu.
* @param print a flag indicating whether or not the print option
* should be available via the popup menu.
* @param zoom a flag indicating whether or not zoom options should be
* added to the popup menu.
* @param tooltips a flag indicating whether or not tooltips should be
* enabled for the chart.
*
* @since 1.0.13
*/
public ChartPanel(JFreeChart chart, int width, int height,
int minimumDrawWidth, int minimumDrawHeight, int maximumDrawWidth,
int maximumDrawHeight, boolean useBuffer, boolean properties,
boolean copy, boolean save, boolean print, boolean zoom,
boolean tooltips) {
setChart(chart);
this.chartMouseListeners = new EventListenerList();
this.info = new ChartRenderingInfo();
setPreferredSize(new Dimension(width, height));
this.useBuffer = useBuffer;
this.refreshBuffer = false;
this.minimumDrawWidth = minimumDrawWidth;
this.minimumDrawHeight = minimumDrawHeight;
this.maximumDrawWidth = maximumDrawWidth;
this.maximumDrawHeight = maximumDrawHeight;
this.zoomTriggerDistance = DEFAULT_ZOOM_TRIGGER_DISTANCE;
// set up popup menu...
this.popup = null;
if (properties || copy || save || print || zoom) {
this.popup = createPopupMenu(properties, copy, save, print, zoom);
}
enableEvents(AWTEvent.MOUSE_EVENT_MASK);
enableEvents(AWTEvent.MOUSE_MOTION_EVENT_MASK);
setDisplayToolTips(tooltips);
addMouseListener(this);
addMouseMotionListener(this);
this.defaultDirectoryForSaveAs = null;
this.enforceFileExtensions = true;
// initialize ChartPanel-specific tool tip delays with
// values the from ToolTipManager.sharedInstance()
ToolTipManager ttm = ToolTipManager.sharedInstance();
this.ownToolTipInitialDelay = ttm.getInitialDelay();
this.ownToolTipDismissDelay = ttm.getDismissDelay();
this.ownToolTipReshowDelay = ttm.getReshowDelay();
this.zoomAroundAnchor = false;
this.zoomOutlinePaint = Color.blue;
this.zoomFillPaint = new Color(0, 0, 255, 63);
this.panMask = InputEvent.CTRL_MASK;
// for MacOSX we can't use the CTRL key for mouse drags, see:
// http://developer.apple.com/qa/qa2004/qa1362.html
String osName = System.getProperty("os.name").toLowerCase();
if (osName.startsWith("mac os x")) {
this.panMask = InputEvent.ALT_MASK;
}
this.overlays = new java.util.ArrayList();
}
/**
* Returns the chart contained in the panel.
*
* @return The chart (possibly null).
*/
public JFreeChart getChart() {
return this.chart;
}
/**
* Sets the chart that is displayed in the panel.
*
* @param chart the chart (null permitted).
*/
public void setChart(JFreeChart chart) {
// stop listening for changes to the existing chart
if (this.chart != null) {
this.chart.removeChangeListener(this);
this.chart.removeProgressListener(this);
}
// add the new chart
this.chart = chart;
if (chart != null) {
this.chart.addChangeListener(this);
this.chart.addProgressListener(this);
Plot plot = chart.getPlot();
this.domainZoomable = false;
this.rangeZoomable = false;
if (plot instanceof Zoomable) {
Zoomable z = (Zoomable) plot;
this.domainZoomable = z.isDomainZoomable();
this.rangeZoomable = z.isRangeZoomable();
this.orientation = z.getOrientation();
}
}
else {
this.domainZoomable = false;
this.rangeZoomable = false;
}
if (this.useBuffer) {
this.refreshBuffer = true;
}
repaint();
}
/**
* Returns the minimum drawing width for charts.
*
* If the width available on the panel is less than this, then the chart is
* drawn at the minimum width then scaled down to fit.
*
* @return The minimum drawing width.
*/
public int getMinimumDrawWidth() {
return this.minimumDrawWidth;
}
/**
* Sets the minimum drawing width for the chart on this panel.
*
* At the time the chart is drawn on the panel, if the available width is
* less than this amount, the chart will be drawn using the minimum width
* then scaled down to fit the available space.
*
* @param width The width.
*/
public void setMinimumDrawWidth(int width) {
this.minimumDrawWidth = width;
}
/**
* Returns the maximum drawing width for charts.
*
* If the width available on the panel is greater than this, then the chart
* is drawn at the maximum width then scaled up to fit.
*
* @return The maximum drawing width.
*/
public int getMaximumDrawWidth() {
return this.maximumDrawWidth;
}
/**
* Sets the maximum drawing width for the chart on this panel.
*
* At the time the chart is drawn on the panel, if the available width is
* greater than this amount, the chart will be drawn using the maximum
* width then scaled up to fit the available space.
*
* @param width The width.
*/
public void setMaximumDrawWidth(int width) {
this.maximumDrawWidth = width;
}
/**
* Returns the minimum drawing height for charts.
*
* If the height available on the panel is less than this, then the chart
* is drawn at the minimum height then scaled down to fit.
*
* @return The minimum drawing height.
*/
public int getMinimumDrawHeight() {
return this.minimumDrawHeight;
}
/**
* Sets the minimum drawing height for the chart on this panel.
*
* At the time the chart is drawn on the panel, if the available height is
* less than this amount, the chart will be drawn using the minimum height
* then scaled down to fit the available space.
*
* @param height The height.
*/
public void setMinimumDrawHeight(int height) {
this.minimumDrawHeight = height;
}
/**
* Returns the maximum drawing height for charts.
*
* If the height available on the panel is greater than this, then the
* chart is drawn at the maximum height then scaled up to fit.
*
* @return The maximum drawing height.
*/
public int getMaximumDrawHeight() {
return this.maximumDrawHeight;
}
/**
* Sets the maximum drawing height for the chart on this panel.
*
* At the time the chart is drawn on the panel, if the available height is
* greater than this amount, the chart will be drawn using the maximum
* height then scaled up to fit the available space.
*
* @param height The height.
*/
public void setMaximumDrawHeight(int height) {
this.maximumDrawHeight = height;
}
/**
* Returns the X scale factor for the chart. This will be 1.0 if no
* scaling has been used.
*
* @return The scale factor.
*/
public double getScaleX() {
return this.scaleX;
}
/**
* Returns the Y scale factory for the chart. This will be 1.0 if no
* scaling has been used.
*
* @return The scale factor.
*/
public double getScaleY() {
return this.scaleY;
}
/**
* Returns the anchor point.
*
* @return The anchor point (possibly null).
*/
public Point2D getAnchor() {
return this.anchor;
}
/**
* Sets the anchor point. This method is provided for the use of
* subclasses, not end users.
*
* @param anchor the anchor point (null permitted).
*/
protected void setAnchor(Point2D anchor) {
this.anchor = anchor;
}
/**
* Returns the popup menu.
*
* @return The popup menu.
*/
public JPopupMenu getPopupMenu() {
return this.popup;
}
/**
* Sets the popup menu for the panel.
*
* @param popup the popup menu (null permitted).
*/
public void setPopupMenu(JPopupMenu popup) {
this.popup = popup;
}
/**
* Returns the chart rendering info from the most recent chart redraw.
*
* @return The chart rendering info.
*/
public ChartRenderingInfo getChartRenderingInfo() {
return this.info;
}
/**
* A convenience method that switches on mouse-based zooming.
*
* @param flag true enables zooming and rectangle fill on
* zoom.
*/
public void setMouseZoomable(boolean flag) {
setMouseZoomable(flag, true);
}
/**
* A convenience method that switches on mouse-based zooming.
*
* @param flag true if zooming enabled
* @param fillRectangle true if zoom rectangle is filled,
* false if rectangle is shown as outline only.
*/
public void setMouseZoomable(boolean flag, boolean fillRectangle) {
setDomainZoomable(flag);
setRangeZoomable(flag);
setFillZoomRectangle(fillRectangle);
}
/**
* Returns the flag that determines whether or not zooming is enabled for
* the domain axis.
*
* @return A boolean.
*/
public boolean isDomainZoomable() {
return this.domainZoomable;
}
/**
* Sets the flag that controls whether or not zooming is enable for the
* domain axis. A check is made to ensure that the current plot supports
* zooming for the domain values.
*
* @param flag true enables zooming if possible.
*/
public void setDomainZoomable(boolean flag) {
if (flag) {
Plot plot = this.chart.getPlot();
if (plot instanceof Zoomable) {
Zoomable z = (Zoomable) plot;
this.domainZoomable = flag && (z.isDomainZoomable());
}
}
else {
this.domainZoomable = false;
}
}
/**
* Returns the flag that determines whether or not zooming is enabled for
* the range axis.
*
* @return A boolean.
*/
public boolean isRangeZoomable() {
return this.rangeZoomable;
}
/**
* A flag that controls mouse-based zooming on the vertical axis.
*
* @param flag true enables zooming.
*/
public void setRangeZoomable(boolean flag) {
if (flag) {
Plot plot = this.chart.getPlot();
if (plot instanceof Zoomable) {
Zoomable z = (Zoomable) plot;
this.rangeZoomable = flag && (z.isRangeZoomable());
}
}
else {
this.rangeZoomable = false;
}
}
/**
* Returns the flag that controls whether or not the zoom rectangle is
* filled when drawn.
*
* @return A boolean.
*/
public boolean getFillZoomRectangle() {
return this.fillZoomRectangle;
}
/**
* A flag that controls how the zoom rectangle is drawn.
*
* @param flag true instructs to fill the rectangle on
* zoom, otherwise it will be outlined.
*/
public void setFillZoomRectangle(boolean flag) {
this.fillZoomRectangle = flag;
}
/**
* Returns the zoom trigger distance. This controls how far the mouse must
* move before a zoom action is triggered.
*
* @return The distance (in Java2D units).
*/
public int getZoomTriggerDistance() {
return this.zoomTriggerDistance;
}
/**
* Sets the zoom trigger distance. This controls how far the mouse must
* move before a zoom action is triggered.
*
* @param distance the distance (in Java2D units).
*/
public void setZoomTriggerDistance(int distance) {
this.zoomTriggerDistance = distance;
}
/**
* Returns the flag that controls whether or not a horizontal axis trace
* line is drawn over the plot area at the current mouse location.
*
* @return A boolean.
*/
public boolean getHorizontalAxisTrace() {
return this.horizontalAxisTrace;
}
/**
* A flag that controls trace lines on the horizontal axis.
*
* @param flag true enables trace lines for the mouse
* pointer on the horizontal axis.
*/
public void setHorizontalAxisTrace(boolean flag) {
this.horizontalAxisTrace = flag;
}
/**
* Returns the horizontal trace line.
*
* @return The horizontal trace line (possibly null).
*/
protected Line2D getHorizontalTraceLine() {
return this.horizontalTraceLine;
}
/**
* Sets the horizontal trace line.
*
* @param line the line (null permitted).
*/
protected void setHorizontalTraceLine(Line2D line) {
this.horizontalTraceLine = line;
}
/**
* Returns the flag that controls whether or not a vertical axis trace
* line is drawn over the plot area at the current mouse location.
*
* @return A boolean.
*/
public boolean getVerticalAxisTrace() {
return this.verticalAxisTrace;
}
/**
* A flag that controls trace lines on the vertical axis.
*
* @param flag true enables trace lines for the mouse
* pointer on the vertical axis.
*/
public void setVerticalAxisTrace(boolean flag) {
this.verticalAxisTrace = flag;
}
/**
* Returns the vertical trace line.
*
* @return The vertical trace line (possibly null).
*/
protected Line2D getVerticalTraceLine() {
return this.verticalTraceLine;
}
/**
* Sets the vertical trace line.
*
* @param line the line (null permitted).
*/
protected void setVerticalTraceLine(Line2D line) {
this.verticalTraceLine = line;
}
/**
* Returns the default directory for the "save as" option.
*
* @return The default directory (possibly null).
*
* @since 1.0.7
*/
public File getDefaultDirectoryForSaveAs() {
return this.defaultDirectoryForSaveAs;
}
/**
* Sets the default directory for the "save as" option. If you set this
* to null, the user's default directory will be used.
*
* @param directory the directory (null permitted).
*
* @since 1.0.7
*/
public void setDefaultDirectoryForSaveAs(File directory) {
if (directory != null) {
if (!directory.isDirectory()) {
throw new IllegalArgumentException(
"The 'directory' argument is not a directory.");
}
}
this.defaultDirectoryForSaveAs = directory;
}
/**
* Returns true if file extensions should be enforced, and
* false otherwise.
*
* @return The flag.
*
* @see #setEnforceFileExtensions(boolean)
*/
public boolean isEnforceFileExtensions() {
return this.enforceFileExtensions;
}
/**
* Sets a flag that controls whether or not file extensions are enforced.
*
* @param enforce the new flag value.
*
* @see #isEnforceFileExtensions()
*/
public void setEnforceFileExtensions(boolean enforce) {
this.enforceFileExtensions = enforce;
}
/**
* Returns the flag that controls whether or not zoom operations are
* centered around the current anchor point.
*
* @return A boolean.
*
* @since 1.0.7
*
* @see #setZoomAroundAnchor(boolean)
*/
public boolean getZoomAroundAnchor() {
return this.zoomAroundAnchor;
}
/**
* Sets the flag that controls whether or not zoom operations are
* centered around the current anchor point.
*
* @param zoomAroundAnchor the new flag value.
*
* @since 1.0.7
*
* @see #getZoomAroundAnchor()
*/
public void setZoomAroundAnchor(boolean zoomAroundAnchor) {
this.zoomAroundAnchor = zoomAroundAnchor;
}
/**
* Returns the zoom rectangle fill paint.
*
* @return The zoom rectangle fill paint (never null).
*
* @see #setZoomFillPaint(java.awt.Paint)
* @see #setFillZoomRectangle(boolean)
*
* @since 1.0.13
*/
public Paint getZoomFillPaint() {
return this.zoomFillPaint;
}
/**
* Sets the zoom rectangle fill paint.
*
* @param paint the paint (null not permitted).
*
* @see #getZoomFillPaint()
* @see #getFillZoomRectangle()
*
* @since 1.0.13
*/
public void setZoomFillPaint(Paint paint) {
if (paint == null) {
throw new IllegalArgumentException("Null 'paint' argument.");
}
this.zoomFillPaint = paint;
}
/**
* Returns the zoom rectangle outline paint.
*
* @return The zoom rectangle outline paint (never null).
*
* @see #setZoomOutlinePaint(java.awt.Paint)
* @see #setFillZoomRectangle(boolean)
*
* @since 1.0.13
*/
public Paint getZoomOutlinePaint() {
return this.zoomOutlinePaint;
}
/**
* Sets the zoom rectangle outline paint.
*
* @param paint the paint (null not permitted).
*
* @see #getZoomOutlinePaint()
* @see #getFillZoomRectangle()
*
* @since 1.0.13
*/
public void setZoomOutlinePaint(Paint paint) {
this.zoomOutlinePaint = paint;
}
/**
* The mouse wheel handler. This will be an instance of MouseWheelHandler
* but we can't reference that class directly because it depends on JRE 1.4
* and we still want to support JRE 1.3.1.
*/
private Object mouseWheelHandler;
/**
* Returns true if the mouse wheel handler is enabled, and
* false otherwise.
*
* @return A boolean.
*
* @since 1.0.13
*/
public boolean isMouseWheelEnabled() {
return this.mouseWheelHandler != null;
}
/**
* Enables or disables mouse wheel support for the panel.
* Note that this method does nothing when running JFreeChart on JRE 1.3.1,
* because that older version of the Java runtime does not support
* mouse wheel events.
*
* @param flag a boolean.
*
* @since 1.0.13
*/
public void setMouseWheelEnabled(boolean flag) {
if (flag && this.mouseWheelHandler == null) {
// use reflection to instantiate a mouseWheelHandler because to
// continue supporting JRE 1.3.1 we cannot depend on the
// MouseWheelListener interface directly
try {
Class c = Class.forName("org.jfree.chart.MouseWheelHandler");
Constructor cc = c.getConstructor(new Class[] {
ChartPanel.class});
Object mwh = cc.newInstance(new Object[] {this});
this.mouseWheelHandler = mwh;
}
catch (ClassNotFoundException e) {
// the class isn't there, so we must have compiled JFreeChart
// with JDK 1.3.1 - thus, we can't have mouse wheel support
}
catch (SecurityException e) {
e.printStackTrace();
}
catch (NoSuchMethodException e) {
e.printStackTrace();
}
catch (IllegalArgumentException e) {
e.printStackTrace();
}
catch (InstantiationException e) {
e.printStackTrace();
}
catch (IllegalAccessException e) {
e.printStackTrace();
}
catch (InvocationTargetException e) {
e.printStackTrace();
}
}
else if (!flag && this.mouseWheelHandler != null) {
// use reflection to deregister the mouseWheelHandler
try {
Class mwl = Class.forName("java.awt.event.MouseWheelListener");
Class c2 = ChartPanel.class;
Method m = c2.getMethod("removeMouseWheelListener",
new Class[] {mwl});
m.invoke(this, new Object[] {this.mouseWheelHandler});
this.mouseWheelHandler = null;
}
catch (ClassNotFoundException e) {
// must be running on JRE 1.3.1, so just ignore this
}
catch (SecurityException e) {
e.printStackTrace();
}
catch (NoSuchMethodException e) {
e.printStackTrace();
}
catch (IllegalArgumentException e) {
e.printStackTrace();
}
catch (IllegalAccessException e) {
e.printStackTrace();
}
catch (InvocationTargetException e) {
e.printStackTrace();
}
}
}
/**
* Add an overlay to the panel.
*
* @param overlay the overlay (null not permitted).
*
* @since 1.0.13
*/
public void addOverlay(Overlay overlay) {
if (overlay == null) {
throw new IllegalArgumentException("Null 'overlay' argument.");
}
this.overlays.add(overlay);
overlay.addChangeListener(this);
repaint();
}
/**
* Removes an overlay from the panel.
*
* @param overlay the overlay to remove (null not permitted).
*
* @since 1.0.13
*/
public void removeOverlay(Overlay overlay) {
if (overlay == null) {
throw new IllegalArgumentException("Null 'overlay' argument.");
}
boolean removed = this.overlays.remove(overlay);
if (removed) {
overlay.removeChangeListener(this);
repaint();
}
}
/**
* Handles a change to an overlay by repainting the panel.
*
* @param event the event.
*
* @since 1.0.13
*/
public void overlayChanged(OverlayChangeEvent event) {
repaint();
}
/**
* Switches the display of tooltips for the panel on or off. Note that
* tooltips can only be displayed if the chart has been configured to
* generate tooltip items.
*
* @param flag true to enable tooltips, false to
* disable tooltips.
*/
public void setDisplayToolTips(boolean flag) {
if (flag) {
ToolTipManager.sharedInstance().registerComponent(this);
}
else {
ToolTipManager.sharedInstance().unregisterComponent(this);
}
}
/**
* Returns a string for the tooltip.
*
* @param e the mouse event.
*
* @return A tool tip or null if no tooltip is available.
*/
public String getToolTipText(MouseEvent e) {
String result = null;
if (this.info != null) {
EntityCollection entities = this.info.getEntityCollection();
if (entities != null) {
Insets insets = getInsets();
ChartEntity entity = entities.getEntity(
(int) ((e.getX() - insets.left) / this.scaleX),
(int) ((e.getY() - insets.top) / this.scaleY));
if (entity != null) {
result = entity.getToolTipText();
}
}
}
return result;
}
/**
* Translates a Java2D point on the chart to a screen location.
*
* @param java2DPoint the Java2D point.
*
* @return The screen location.
*/
public Point translateJava2DToScreen(Point2D java2DPoint) {
Insets insets = getInsets();
int x = (int) (java2DPoint.getX() * this.scaleX + insets.left);
int y = (int) (java2DPoint.getY() * this.scaleY + insets.top);
return new Point(x, y);
}
/**
* Translates a panel (component) location to a Java2D point.
*
* @param screenPoint the screen location (null not
* permitted).
*
* @return The Java2D coordinates.
*/
public Point2D translateScreenToJava2D(Point screenPoint) {
Insets insets = getInsets();
double x = (screenPoint.getX() - insets.left) / this.scaleX;
double y = (screenPoint.getY() - insets.top) / this.scaleY;
return new Point2D.Double(x, y);
}
/**
* Applies any scaling that is in effect for the chart drawing to the
* given rectangle.
*
* @param rect the rectangle (null not permitted).
*
* @return A new scaled rectangle.
*/
public Rectangle2D scale(Rectangle2D rect) {
Insets insets = getInsets();
double x = rect.getX() * getScaleX() + insets.left;
double y = rect.getY() * getScaleY() + insets.top;
double w = rect.getWidth() * getScaleX();
double h = rect.getHeight() * getScaleY();
return new Rectangle2D.Double(x, y, w, h);
}
/**
* Returns the chart entity at a given point.
*
* This method will return null if there is (a) no entity at the given
* point, or (b) no entity collection has been generated.
*
* @param viewX the x-coordinate.
* @param viewY the y-coordinate.
*
* @return The chart entity (possibly null).
*/
public ChartEntity getEntityForPoint(int viewX, int viewY) {
ChartEntity result = null;
if (this.info != null) {
Insets insets = getInsets();
double x = (viewX - insets.left) / this.scaleX;
double y = (viewY - insets.top) / this.scaleY;
EntityCollection entities = this.info.getEntityCollection();
result = entities != null ? entities.getEntity(x, y) : null;
}
return result;
}
/**
* Returns the flag that controls whether or not the offscreen buffer
* needs to be refreshed.
*
* @return A boolean.
*/
public boolean getRefreshBuffer() {
return this.refreshBuffer;
}
/**
* Sets the refresh buffer flag. This flag is used to avoid unnecessary
* redrawing of the chart when the offscreen image buffer is used.
*
* @param flag true indicates that the buffer should be
* refreshed.
*/
public void setRefreshBuffer(boolean flag) {
this.refreshBuffer = flag;
}
/**
* Paints the component by drawing the chart to fill the entire component,
* but allowing for the insets (which will be non-zero if a border has been
* set for this component). To increase performance (at the expense of
* memory), an off-screen buffer image can be used.
*
* @param g the graphics device for drawing on.
*/
public void paintComponent(Graphics g) {
super.paintComponent(g);
if (this.chart == null) {
return;
}
Graphics2D g2 = (Graphics2D) g.create();
// first determine the size of the chart rendering area...
Dimension size = getSize();
Insets insets = getInsets();
Rectangle2D available = new Rectangle2D.Double(insets.left, insets.top,
size.getWidth() - insets.left - insets.right,
size.getHeight() - insets.top - insets.bottom);
// work out if scaling is required...
boolean scale = false;
double drawWidth = available.getWidth();
double drawHeight = available.getHeight();
this.scaleX = 1.0;
this.scaleY = 1.0;
if (drawWidth < this.minimumDrawWidth) {
this.scaleX = drawWidth / this.minimumDrawWidth;
drawWidth = this.minimumDrawWidth;
scale = true;
}
else if (drawWidth > this.maximumDrawWidth) {
this.scaleX = drawWidth / this.maximumDrawWidth;
drawWidth = this.maximumDrawWidth;
scale = true;
}
if (drawHeight < this.minimumDrawHeight) {
this.scaleY = drawHeight / this.minimumDrawHeight;
drawHeight = this.minimumDrawHeight;
scale = true;
}
else if (drawHeight > this.maximumDrawHeight) {
this.scaleY = drawHeight / this.maximumDrawHeight;
drawHeight = this.maximumDrawHeight;
scale = true;
}
Rectangle2D chartArea = new Rectangle2D.Double(0.0, 0.0, drawWidth,
drawHeight);
// are we using the chart buffer?
if (this.useBuffer) {
// do we need to resize the buffer?
if ((this.chartBuffer == null)
|| (this.chartBufferWidth != available.getWidth())
|| (this.chartBufferHeight != available.getHeight())) {
this.chartBufferWidth = (int) available.getWidth();
this.chartBufferHeight = (int) available.getHeight();
GraphicsConfiguration gc = g2.getDeviceConfiguration();
this.chartBuffer = gc.createCompatibleImage(
this.chartBufferWidth, this.chartBufferHeight,
Transparency.TRANSLUCENT);
this.refreshBuffer = true;
}
// do we need to redraw the buffer?
if (this.refreshBuffer) {
this.refreshBuffer = false; // clear the flag
Rectangle2D bufferArea = new Rectangle2D.Double(
0, 0, this.chartBufferWidth, this.chartBufferHeight);
// make the background of the buffer clear and transparent
Graphics2D bufferG2 = (Graphics2D)
this.chartBuffer.getGraphics();
Composite savedComposite = bufferG2.getComposite();
bufferG2.setComposite(AlphaComposite.getInstance(
AlphaComposite.CLEAR, 0.0f));
Rectangle r = new Rectangle(0, 0, this.chartBufferWidth,
this.chartBufferHeight);
bufferG2.fill(r);
bufferG2.setComposite(savedComposite);
if (scale) {
AffineTransform saved = bufferG2.getTransform();
AffineTransform st = AffineTransform.getScaleInstance(
this.scaleX, this.scaleY);
bufferG2.transform(st);
this.chart.draw(bufferG2, chartArea, this.anchor,
this.info);
bufferG2.setTransform(saved);
}
else {
this.chart.draw(bufferG2, bufferArea, this.anchor,
this.info);
}
}
// zap the buffer onto the panel...
g2.drawImage(this.chartBuffer, insets.left, insets.top, this);
}
// or redrawing the chart every time...
else {
AffineTransform saved = g2.getTransform();
g2.translate(insets.left, insets.top);
if (scale) {
AffineTransform st = AffineTransform.getScaleInstance(
this.scaleX, this.scaleY);
g2.transform(st);
}
this.chart.draw(g2, chartArea, this.anchor, this.info);
g2.setTransform(saved);
}
Iterator iterator = this.overlays.iterator();
while (iterator.hasNext()) {
Overlay overlay = (Overlay) iterator.next();
overlay.paintOverlay(g2, this);
}
// redraw the zoom rectangle (if present) - if useBuffer is false,
// we use XOR so we can XOR the rectangle away again without redrawing
// the chart
drawZoomRectangle(g2, !this.useBuffer);
g2.dispose();
this.anchor = null;
this.verticalTraceLine = null;
this.horizontalTraceLine = null;
}
/**
* Receives notification of changes to the chart, and redraws the chart.
*
* @param event details of the chart change event.
*/
public void chartChanged(ChartChangeEvent event) {
this.refreshBuffer = true;
Plot plot = this.chart.getPlot();
if (plot instanceof Zoomable) {
Zoomable z = (Zoomable) plot;
this.orientation = z.getOrientation();
}
repaint();
}
/**
* Receives notification of a chart progress event.
*
* @param event the event.
*/
public void chartProgress(ChartProgressEvent event) {
// does nothing - override if necessary
}
/**
* Handles action events generated by the popup menu.
*
* @param event the event.
*/
public void actionPerformed(ActionEvent event) {
String command = event.getActionCommand();
// many of the zoom methods need a screen location - all we have is
// the zoomPoint, but it might be null. Here we grab the x and y
// coordinates, or use defaults...
double screenX = -1.0;
double screenY = -1.0;
if (this.zoomPoint != null) {
screenX = this.zoomPoint.getX();
screenY = this.zoomPoint.getY();
}
if (command.equals(PROPERTIES_COMMAND)) {
doEditChartProperties();
}
else if (command.equals(COPY_COMMAND)) {
doCopy();
}
else if (command.equals(SAVE_COMMAND)) {
try {
doSaveAs();
}
catch (IOException e) {
e.printStackTrace();
}
}
else if (command.equals(PRINT_COMMAND)) {
createChartPrintJob();
}
else if (command.equals(ZOOM_IN_BOTH_COMMAND)) {
zoomInBoth(screenX, screenY);
}
else if (command.equals(ZOOM_IN_DOMAIN_COMMAND)) {
zoomInDomain(screenX, screenY);
}
else if (command.equals(ZOOM_IN_RANGE_COMMAND)) {
zoomInRange(screenX, screenY);
}
else if (command.equals(ZOOM_OUT_BOTH_COMMAND)) {
zoomOutBoth(screenX, screenY);
}
else if (command.equals(ZOOM_OUT_DOMAIN_COMMAND)) {
zoomOutDomain(screenX, screenY);
}
else if (command.equals(ZOOM_OUT_RANGE_COMMAND)) {
zoomOutRange(screenX, screenY);
}
else if (command.equals(ZOOM_RESET_BOTH_COMMAND)) {
restoreAutoBounds();
}
else if (command.equals(ZOOM_RESET_DOMAIN_COMMAND)) {
restoreAutoDomainBounds();
}
else if (command.equals(ZOOM_RESET_RANGE_COMMAND)) {
restoreAutoRangeBounds();
}
}
/**
* Handles a 'mouse entered' event. This method changes the tooltip delays
* of ToolTipManager.sharedInstance() to the possibly different values set
* for this chart panel.
*
* @param e the mouse event.
*/
public void mouseEntered(MouseEvent e) {
if (!this.ownToolTipDelaysActive) {
ToolTipManager ttm = ToolTipManager.sharedInstance();
this.originalToolTipInitialDelay = ttm.getInitialDelay();
ttm.setInitialDelay(this.ownToolTipInitialDelay);
this.originalToolTipReshowDelay = ttm.getReshowDelay();
ttm.setReshowDelay(this.ownToolTipReshowDelay);
this.originalToolTipDismissDelay = ttm.getDismissDelay();
ttm.setDismissDelay(this.ownToolTipDismissDelay);
this.ownToolTipDelaysActive = true;
}
}
/**
* Handles a 'mouse exited' event. This method resets the tooltip delays of
* ToolTipManager.sharedInstance() to their
* original values in effect before mouseEntered()
*
* @param e the mouse event.
*/
public void mouseExited(MouseEvent e) {
if (this.ownToolTipDelaysActive) {
// restore original tooltip dealys
ToolTipManager ttm = ToolTipManager.sharedInstance();
ttm.setInitialDelay(this.originalToolTipInitialDelay);
ttm.setReshowDelay(this.originalToolTipReshowDelay);
ttm.setDismissDelay(this.originalToolTipDismissDelay);
this.ownToolTipDelaysActive = false;
}
}
/**
* Handles a 'mouse pressed' event.
*
* This event is the popup trigger on Unix/Linux. For Windows, the popup
* trigger is the 'mouse released' event.
*
* @param e The mouse event.
*/
public void mousePressed(MouseEvent e) {
if (this.chart == null) {
return;
}
Plot plot = this.chart.getPlot();
int mods = e.getModifiers();
if ((mods & this.panMask) == this.panMask) {
// can we pan this plot?
if (plot instanceof Pannable) {
Pannable pannable = (Pannable) plot;
if (pannable.isDomainPannable() || pannable.isRangePannable()) {
Rectangle2D screenDataArea = getScreenDataArea(e.getX(),
e.getY());
if (screenDataArea != null && screenDataArea.contains(
e.getPoint())) {
this.panW = screenDataArea.getWidth();
this.panH = screenDataArea.getHeight();
this.panLast = e.getPoint();
setCursor(Cursor.getPredefinedCursor(
Cursor.MOVE_CURSOR));
}
}
// the actual panning occurs later in the mouseDragged()
// method
}
}
else if (this.zoomRectangle == null) {
Rectangle2D screenDataArea = getScreenDataArea(e.getX(), e.getY());
if (screenDataArea != null) {
this.zoomPoint = getPointInRectangle(e.getX(), e.getY(),
screenDataArea);
}
else {
this.zoomPoint = null;
}
if (e.isPopupTrigger()) {
if (this.popup != null) {
displayPopupMenu(e.getX(), e.getY());
}
}
}
}
/**
* Returns a point based on (x, y) but constrained to be within the bounds
* of the given rectangle. This method could be moved to JCommon.
*
* @param x the x-coordinate.
* @param y the y-coordinate.
* @param area the rectangle (null not permitted).
*
* @return A point within the rectangle.
*/
private Point2D getPointInRectangle(int x, int y, Rectangle2D area) {
double xx = Math.max(area.getMinX(), Math.min(x, area.getMaxX()));
double yy = Math.max(area.getMinY(), Math.min(y, area.getMaxY()));
return new Point2D.Double(xx, yy);
}
/**
* Handles a 'mouse dragged' event.
*
* @param e the mouse event.
*/
public void mouseDragged(MouseEvent e) {
// if the popup menu has already been triggered, then ignore dragging...
if (this.popup != null && this.popup.isShowing()) {
return;
}
// handle panning if we have a start point
if (this.panLast != null) {
double dx = e.getX() - this.panLast.getX();
double dy = e.getY() - this.panLast.getY();
if (dx == 0.0 && dy == 0.0) {
return;
}
double wPercent = -dx / this.panW;
double hPercent = dy / this.panH;
boolean old = this.chart.getPlot().isNotify();
this.chart.getPlot().setNotify(false);
Pannable p = (Pannable) this.chart.getPlot();
if (p.getOrientation() == PlotOrientation.VERTICAL) {
p.panDomainAxes(wPercent, this.info.getPlotInfo(),
this.panLast);
p.panRangeAxes(hPercent, this.info.getPlotInfo(),
this.panLast);
}
else {
p.panDomainAxes(hPercent, this.info.getPlotInfo(),
this.panLast);
p.panRangeAxes(wPercent, this.info.getPlotInfo(),
this.panLast);
}
this.panLast = e.getPoint();
this.chart.getPlot().setNotify(old);
return;
}
// if no initial zoom point was set, ignore dragging...
if (this.zoomPoint == null) {
return;
}
Graphics2D g2 = (Graphics2D) getGraphics();
// erase the previous zoom rectangle (if any). We only need to do
// this is we are using XOR mode, which we do when we're not using
// the buffer (if there is a buffer, then at the end of this method we
// just trigger a repaint)
if (!this.useBuffer) {
drawZoomRectangle(g2, true);
}
boolean hZoom = false;
boolean vZoom = false;
if (this.orientation == PlotOrientation.HORIZONTAL) {
hZoom = this.rangeZoomable;
vZoom = this.domainZoomable;
}
else {
hZoom = this.domainZoomable;
vZoom = this.rangeZoomable;
}
Rectangle2D scaledDataArea = getScreenDataArea(
(int) this.zoomPoint.getX(), (int) this.zoomPoint.getY());
if (hZoom && vZoom) {
// selected rectangle shouldn't extend outside the data area...
double xmax = Math.min(e.getX(), scaledDataArea.getMaxX());
double ymax = Math.min(e.getY(), scaledDataArea.getMaxY());
this.zoomRectangle = new Rectangle2D.Double(
this.zoomPoint.getX(), this.zoomPoint.getY(),
xmax - this.zoomPoint.getX(), ymax - this.zoomPoint.getY());
}
else if (hZoom) {
double xmax = Math.min(e.getX(), scaledDataArea.getMaxX());
this.zoomRectangle = new Rectangle2D.Double(
this.zoomPoint.getX(), scaledDataArea.getMinY(),
xmax - this.zoomPoint.getX(), scaledDataArea.getHeight());
}
else if (vZoom) {
double ymax = Math.min(e.getY(), scaledDataArea.getMaxY());
this.zoomRectangle = new Rectangle2D.Double(
scaledDataArea.getMinX(), this.zoomPoint.getY(),
scaledDataArea.getWidth(), ymax - this.zoomPoint.getY());
}
// Draw the new zoom rectangle...
if (this.useBuffer) {
repaint();
}
else {
// with no buffer, we use XOR to draw the rectangle "over" the
// chart...
drawZoomRectangle(g2, true);
}
g2.dispose();
}
/**
* Handles a 'mouse released' event. On Windows, we need to check if this
* is a popup trigger, but only if we haven't already been tracking a zoom
* rectangle.
*
* @param e information about the event.
*/
public void mouseReleased(MouseEvent e) {
// if we've been panning, we need to reset now that the mouse is
// released...
if (this.panLast != null) {
this.panLast = null;
setCursor(Cursor.getDefaultCursor());
}
else if (this.zoomRectangle != null) {
boolean hZoom = false;
boolean vZoom = false;
if (this.orientation == PlotOrientation.HORIZONTAL) {
hZoom = this.rangeZoomable;
vZoom = this.domainZoomable;
}
else {
hZoom = this.domainZoomable;
vZoom = this.rangeZoomable;
}
boolean zoomTrigger1 = hZoom && Math.abs(e.getX()
- this.zoomPoint.getX()) >= this.zoomTriggerDistance;
boolean zoomTrigger2 = vZoom && Math.abs(e.getY()
- this.zoomPoint.getY()) >= this.zoomTriggerDistance;
if (zoomTrigger1 || zoomTrigger2) {
if ((hZoom && (e.getX() < this.zoomPoint.getX()))
|| (vZoom && (e.getY() < this.zoomPoint.getY()))) {
restoreAutoBounds();
}
else {
double x, y, w, h;
Rectangle2D screenDataArea = getScreenDataArea(
(int) this.zoomPoint.getX(),
(int) this.zoomPoint.getY());
double maxX = screenDataArea.getMaxX();
double maxY = screenDataArea.getMaxY();
// for mouseReleased event, (horizontalZoom || verticalZoom)
// will be true, so we can just test for either being false;
// otherwise both are true
if (!vZoom) {
x = this.zoomPoint.getX();
y = screenDataArea.getMinY();
w = Math.min(this.zoomRectangle.getWidth(),
maxX - this.zoomPoint.getX());
h = screenDataArea.getHeight();
}
else if (!hZoom) {
x = screenDataArea.getMinX();
y = this.zoomPoint.getY();
w = screenDataArea.getWidth();
h = Math.min(this.zoomRectangle.getHeight(),
maxY - this.zoomPoint.getY());
}
else {
x = this.zoomPoint.getX();
y = this.zoomPoint.getY();
w = Math.min(this.zoomRectangle.getWidth(),
maxX - this.zoomPoint.getX());
h = Math.min(this.zoomRectangle.getHeight(),
maxY - this.zoomPoint.getY());
}
Rectangle2D zoomArea = new Rectangle2D.Double(x, y, w, h);
zoom(zoomArea);
}
this.zoomPoint = null;
this.zoomRectangle = null;
}
else {
// erase the zoom rectangle
Graphics2D g2 = (Graphics2D) getGraphics();
if (this.useBuffer) {
repaint();
}
else {
drawZoomRectangle(g2, true);
}
g2.dispose();
this.zoomPoint = null;
this.zoomRectangle = null;
}
}
else if (e.isPopupTrigger()) {
if (this.popup != null) {
displayPopupMenu(e.getX(), e.getY());
}
}
}
/**
* Receives notification of mouse clicks on the panel. These are
* translated and passed on to any registered {@link ChartMouseListener}s.
*
* @param event Information about the mouse event.
*/
public void mouseClicked(MouseEvent event) {
Insets insets = getInsets();
int x = (int) ((event.getX() - insets.left) / this.scaleX);
int y = (int) ((event.getY() - insets.top) / this.scaleY);
this.anchor = new Point2D.Double(x, y);
if (this.chart == null) {
return;
}
this.chart.setNotify(true); // force a redraw
// new entity code...
Object[] listeners = this.chartMouseListeners.getListeners(
ChartMouseListener.class);
if (listeners.length == 0) {
return;
}
ChartEntity entity = null;
if (this.info != null) {
EntityCollection entities = this.info.getEntityCollection();
if (entities != null) {
entity = entities.getEntity(x, y);
}
}
ChartMouseEvent chartEvent = new ChartMouseEvent(getChart(), event,
entity);
for (int i = listeners.length - 1; i >= 0; i -= 1) {
((ChartMouseListener) listeners[i]).chartMouseClicked(chartEvent);
}
}
/**
* Implementation of the MouseMotionListener's method.
*
* @param e the event.
*/
public void mouseMoved(MouseEvent e) {
Graphics2D g2 = (Graphics2D) getGraphics();
if (this.horizontalAxisTrace) {
drawHorizontalAxisTrace(g2, e.getX());
}
if (this.verticalAxisTrace) {
drawVerticalAxisTrace(g2, e.getY());
}
g2.dispose();
Object[] listeners = this.chartMouseListeners.getListeners(
ChartMouseListener.class);
if (listeners.length == 0) {
return;
}
Insets insets = getInsets();
int x = (int) ((e.getX() - insets.left) / this.scaleX);
int y = (int) ((e.getY() - insets.top) / this.scaleY);
ChartEntity entity = null;
if (this.info != null) {
EntityCollection entities = this.info.getEntityCollection();
if (entities != null) {
entity = entities.getEntity(x, y);
}
}
// we can only generate events if the panel's chart is not null
// (see bug report 1556951)
if (this.chart != null) {
ChartMouseEvent event = new ChartMouseEvent(getChart(), e, entity);
for (int i = listeners.length - 1; i >= 0; i -= 1) {
((ChartMouseListener) listeners[i]).chartMouseMoved(event);
}
}
}
/**
* Zooms in on an anchor point (specified in screen coordinate space).
*
* @param x the x value (in screen coordinates).
* @param y the y value (in screen coordinates).
*/
public void zoomInBoth(double x, double y) {
Plot plot = this.chart.getPlot();
if (plot == null) {
return;
}
// here we tweak the notify flag on the plot so that only
// one notification happens even though we update multiple
// axes...
boolean savedNotify = plot.isNotify();
plot.setNotify(false);
zoomInDomain(x, y);
zoomInRange(x, y);
plot.setNotify(savedNotify);
}
/**
* Decreases the length of the domain axis, centered about the given
* coordinate on the screen. The length of the domain axis is reduced
* by the value of {@link #getZoomInFactor()}.
*
* @param x the x coordinate (in screen coordinates).
* @param y the y-coordinate (in screen coordinates).
*/
public void zoomInDomain(double x, double y) {
Plot plot = this.chart.getPlot();
if (plot instanceof Zoomable) {
// here we tweak the notify flag on the plot so that only
// one notification happens even though we update multiple
// axes...
boolean savedNotify = plot.isNotify();
plot.setNotify(false);
Zoomable z = (Zoomable) plot;
z.zoomDomainAxes(this.zoomInFactor, this.info.getPlotInfo(),
translateScreenToJava2D(new Point((int) x, (int) y)),
this.zoomAroundAnchor);
plot.setNotify(savedNotify);
}
}
/**
* Decreases the length of the range axis, centered about the given
* coordinate on the screen. The length of the range axis is reduced by
* the value of {@link #getZoomInFactor()}.
*
* @param x the x-coordinate (in screen coordinates).
* @param y the y coordinate (in screen coordinates).
*/
public void zoomInRange(double x, double y) {
Plot plot = this.chart.getPlot();
if (plot instanceof Zoomable) {
// here we tweak the notify flag on the plot so that only
// one notification happens even though we update multiple
// axes...
boolean savedNotify = plot.isNotify();
plot.setNotify(false);
Zoomable z = (Zoomable) plot;
z.zoomRangeAxes(this.zoomInFactor, this.info.getPlotInfo(),
translateScreenToJava2D(new Point((int) x, (int) y)),
this.zoomAroundAnchor);
plot.setNotify(savedNotify);
}
}
/**
* Zooms out on an anchor point (specified in screen coordinate space).
*
* @param x the x value (in screen coordinates).
* @param y the y value (in screen coordinates).
*/
public void zoomOutBoth(double x, double y) {
Plot plot = this.chart.getPlot();
if (plot == null) {
return;
}
// here we tweak the notify flag on the plot so that only
// one notification happens even though we update multiple
// axes...
boolean savedNotify = plot.isNotify();
plot.setNotify(false);
zoomOutDomain(x, y);
zoomOutRange(x, y);
plot.setNotify(savedNotify);
}
/**
* Increases the length of the domain axis, centered about the given
* coordinate on the screen. The length of the domain axis is increased
* by the value of {@link #getZoomOutFactor()}.
*
* @param x the x coordinate (in screen coordinates).
* @param y the y-coordinate (in screen coordinates).
*/
public void zoomOutDomain(double x, double y) {
Plot plot = this.chart.getPlot();
if (plot instanceof Zoomable) {
// here we tweak the notify flag on the plot so that only
// one notification happens even though we update multiple
// axes...
boolean savedNotify = plot.isNotify();
plot.setNotify(false);
Zoomable z = (Zoomable) plot;
z.zoomDomainAxes(this.zoomOutFactor, this.info.getPlotInfo(),
translateScreenToJava2D(new Point((int) x, (int) y)),
this.zoomAroundAnchor);
plot.setNotify(savedNotify);
}
}
/**
* Increases the length the range axis, centered about the given
* coordinate on the screen. The length of the range axis is increased
* by the value of {@link #getZoomOutFactor()}.
*
* @param x the x coordinate (in screen coordinates).
* @param y the y-coordinate (in screen coordinates).
*/
public void zoomOutRange(double x, double y) {
Plot plot = this.chart.getPlot();
if (plot instanceof Zoomable) {
// here we tweak the notify flag on the plot so that only
// one notification happens even though we update multiple
// axes...
boolean savedNotify = plot.isNotify();
plot.setNotify(false);
Zoomable z = (Zoomable) plot;
z.zoomRangeAxes(this.zoomOutFactor, this.info.getPlotInfo(),
translateScreenToJava2D(new Point((int) x, (int) y)),
this.zoomAroundAnchor);
plot.setNotify(savedNotify);
}
}
/**
* Zooms in on a selected region.
*
* @param selection the selected region.
*/
public void zoom(Rectangle2D selection) {
// get the origin of the zoom selection in the Java2D space used for
// drawing the chart (that is, before any scaling to fit the panel)
Point2D selectOrigin = translateScreenToJava2D(new Point(
(int) Math.ceil(selection.getX()),
(int) Math.ceil(selection.getY())));
PlotRenderingInfo plotInfo = this.info.getPlotInfo();
Rectangle2D scaledDataArea = getScreenDataArea(
(int) selection.getCenterX(), (int) selection.getCenterY());
if ((selection.getHeight() > 0) && (selection.getWidth() > 0)) {
double hLower = (selection.getMinX() - scaledDataArea.getMinX())
/ scaledDataArea.getWidth();
double hUpper = (selection.getMaxX() - scaledDataArea.getMinX())
/ scaledDataArea.getWidth();
double vLower = (scaledDataArea.getMaxY() - selection.getMaxY())
/ scaledDataArea.getHeight();
double vUpper = (scaledDataArea.getMaxY() - selection.getMinY())
/ scaledDataArea.getHeight();
Plot p = this.chart.getPlot();
if (p instanceof Zoomable) {
// here we tweak the notify flag on the plot so that only
// one notification happens even though we update multiple
// axes...
boolean savedNotify = p.isNotify();
p.setNotify(false);
Zoomable z = (Zoomable) p;
if (z.getOrientation() == PlotOrientation.HORIZONTAL) {
z.zoomDomainAxes(vLower, vUpper, plotInfo, selectOrigin);
z.zoomRangeAxes(hLower, hUpper, plotInfo, selectOrigin);
}
else {
z.zoomDomainAxes(hLower, hUpper, plotInfo, selectOrigin);
z.zoomRangeAxes(vLower, vUpper, plotInfo, selectOrigin);
}
p.setNotify(savedNotify);
}
}
}
/**
* Restores the auto-range calculation on both axes.
*/
public void restoreAutoBounds() {
Plot plot = this.chart.getPlot();
if (plot == null) {
return;
}
// here we tweak the notify flag on the plot so that only
// one notification happens even though we update multiple
// axes...
boolean savedNotify = plot.isNotify();
plot.setNotify(false);
restoreAutoDomainBounds();
restoreAutoRangeBounds();
plot.setNotify(savedNotify);
}
/**
* Restores the auto-range calculation on the domain axis.
*/
public void restoreAutoDomainBounds() {
Plot plot = this.chart.getPlot();
if (plot instanceof Zoomable) {
Zoomable z = (Zoomable) plot;
// here we tweak the notify flag on the plot so that only
// one notification happens even though we update multiple
// axes...
boolean savedNotify = plot.isNotify();
plot.setNotify(false);
// we need to guard against this.zoomPoint being null
Point2D zp = (this.zoomPoint != null
? this.zoomPoint : new Point());
z.zoomDomainAxes(0.0, this.info.getPlotInfo(), zp);
plot.setNotify(savedNotify);
}
}
/**
* Restores the auto-range calculation on the range axis.
*/
public void restoreAutoRangeBounds() {
Plot plot = this.chart.getPlot();
if (plot instanceof Zoomable) {
Zoomable z = (Zoomable) plot;
// here we tweak the notify flag on the plot so that only
// one notification happens even though we update multiple
// axes...
boolean savedNotify = plot.isNotify();
plot.setNotify(false);
// we need to guard against this.zoomPoint being null
Point2D zp = (this.zoomPoint != null
? this.zoomPoint : new Point());
z.zoomRangeAxes(0.0, this.info.getPlotInfo(), zp);
plot.setNotify(savedNotify);
}
}
/**
* Returns the data area for the chart (the area inside the axes) with the
* current scaling applied (that is, the area as it appears on screen).
*
* @return The scaled data area.
*/
public Rectangle2D getScreenDataArea() {
Rectangle2D dataArea = this.info.getPlotInfo().getDataArea();
Insets insets = getInsets();
double x = dataArea.getX() * this.scaleX + insets.left;
double y = dataArea.getY() * this.scaleY + insets.top;
double w = dataArea.getWidth() * this.scaleX;
double h = dataArea.getHeight() * this.scaleY;
return new Rectangle2D.Double(x, y, w, h);
}
/**
* Returns the data area (the area inside the axes) for the plot or subplot,
* with the current scaling applied.
*
* @param x the x-coordinate (for subplot selection).
* @param y the y-coordinate (for subplot selection).
*
* @return The scaled data area.
*/
public Rectangle2D getScreenDataArea(int x, int y) {
PlotRenderingInfo plotInfo = this.info.getPlotInfo();
Rectangle2D result;
if (plotInfo.getSubplotCount() == 0) {
result = getScreenDataArea();
}
else {
// get the origin of the zoom selection in the Java2D space used for
// drawing the chart (that is, before any scaling to fit the panel)
Point2D selectOrigin = translateScreenToJava2D(new Point(x, y));
int subplotIndex = plotInfo.getSubplotIndex(selectOrigin);
if (subplotIndex == -1) {
return null;
}
result = scale(plotInfo.getSubplotInfo(subplotIndex).getDataArea());
}
return result;
}
/**
* Returns the initial tooltip delay value used inside this chart panel.
*
* @return An integer representing the initial delay value, in milliseconds.
*
* @see javax.swing.ToolTipManager#getInitialDelay()
*/
public int getInitialDelay() {
return this.ownToolTipInitialDelay;
}
/**
* Returns the reshow tooltip delay value used inside this chart panel.
*
* @return An integer representing the reshow delay value, in milliseconds.
*
* @see javax.swing.ToolTipManager#getReshowDelay()
*/
public int getReshowDelay() {
return this.ownToolTipReshowDelay;
}
/**
* Returns the dismissal tooltip delay value used inside this chart panel.
*
* @return An integer representing the dismissal delay value, in
* milliseconds.
*
* @see javax.swing.ToolTipManager#getDismissDelay()
*/
public int getDismissDelay() {
return this.ownToolTipDismissDelay;
}
/**
* Specifies the initial delay value for this chart panel.
*
* @param delay the number of milliseconds to delay (after the cursor has
* paused) before displaying.
*
* @see javax.swing.ToolTipManager#setInitialDelay(int)
*/
public void setInitialDelay(int delay) {
this.ownToolTipInitialDelay = delay;
}
/**
* Specifies the amount of time before the user has to wait initialDelay
* milliseconds before a tooltip will be shown.
*
* @param delay time in milliseconds
*
* @see javax.swing.ToolTipManager#setReshowDelay(int)
*/
public void setReshowDelay(int delay) {
this.ownToolTipReshowDelay = delay;
}
/**
* Specifies the dismissal delay value for this chart panel.
*
* @param delay the number of milliseconds to delay before taking away the
* tooltip
*
* @see javax.swing.ToolTipManager#setDismissDelay(int)
*/
public void setDismissDelay(int delay) {
this.ownToolTipDismissDelay = delay;
}
/**
* Returns the zoom in factor.
*
* @return The zoom in factor.
*
* @see #setZoomInFactor(double)
*/
public double getZoomInFactor() {
return this.zoomInFactor;
}
/**
* Sets the zoom in factor.
*
* @param factor the factor.
*
* @see #getZoomInFactor()
*/
public void setZoomInFactor(double factor) {
this.zoomInFactor = factor;
}
/**
* Returns the zoom out factor.
*
* @return The zoom out factor.
*
* @see #setZoomOutFactor(double)
*/
public double getZoomOutFactor() {
return this.zoomOutFactor;
}
/**
* Sets the zoom out factor.
*
* @param factor the factor.
*
* @see #getZoomOutFactor()
*/
public void setZoomOutFactor(double factor) {
this.zoomOutFactor = factor;
}
/**
* Draws zoom rectangle (if present).
* The drawing is performed in XOR mode, therefore
* when this method is called twice in a row,
* the second call will completely restore the state
* of the canvas.
*
* @param g2 the graphics device.
* @param xor use XOR for drawing?
*/
private void drawZoomRectangle(Graphics2D g2, boolean xor) {
if (this.zoomRectangle != null) {
if (xor) {
// Set XOR mode to draw the zoom rectangle
g2.setXORMode(Color.gray);
}
if (this.fillZoomRectangle) {
g2.setPaint(this.zoomFillPaint);
g2.fill(this.zoomRectangle);
}
else {
g2.setPaint(this.zoomOutlinePaint);
g2.draw(this.zoomRectangle);
}
if (xor) {
// Reset to the default 'overwrite' mode
g2.setPaintMode();
}
}
}
/**
* Draws a vertical line used to trace the mouse position to the horizontal
* axis.
*
* @param g2 the graphics device.
* @param x the x-coordinate of the trace line.
*/
private void drawHorizontalAxisTrace(Graphics2D g2, int x) {
Rectangle2D dataArea = getScreenDataArea();
g2.setXORMode(Color.orange);
if (((int) dataArea.getMinX() < x) && (x < (int) dataArea.getMaxX())) {
if (this.verticalTraceLine != null) {
g2.draw(this.verticalTraceLine);
this.verticalTraceLine.setLine(x, (int) dataArea.getMinY(), x,
(int) dataArea.getMaxY());
}
else {
this.verticalTraceLine = new Line2D.Float(x,
(int) dataArea.getMinY(), x, (int) dataArea.getMaxY());
}
g2.draw(this.verticalTraceLine);
}
// Reset to the default 'overwrite' mode
g2.setPaintMode();
}
/**
* Draws a horizontal line used to trace the mouse position to the vertical
* axis.
*
* @param g2 the graphics device.
* @param y the y-coordinate of the trace line.
*/
private void drawVerticalAxisTrace(Graphics2D g2, int y) {
Rectangle2D dataArea = getScreenDataArea();
g2.setXORMode(Color.orange);
if (((int) dataArea.getMinY() < y) && (y < (int) dataArea.getMaxY())) {
if (this.horizontalTraceLine != null) {
g2.draw(this.horizontalTraceLine);
this.horizontalTraceLine.setLine((int) dataArea.getMinX(), y,
(int) dataArea.getMaxX(), y);
}
else {
this.horizontalTraceLine = new Line2D.Float(
(int) dataArea.getMinX(), y, (int) dataArea.getMaxX(),
y);
}
g2.draw(this.horizontalTraceLine);
}
// Reset to the default 'overwrite' mode
g2.setPaintMode();
}
/**
* Displays a dialog that allows the user to edit the properties for the
* current chart.
*
* @since 1.0.3
*/
public void doEditChartProperties() {
ChartEditor editor = ChartEditorManager.getChartEditor(this.chart);
int result = JOptionPane.showConfirmDialog(this, editor,
localizationResources.getString("Chart_Properties"),
JOptionPane.OK_CANCEL_OPTION, JOptionPane.PLAIN_MESSAGE);
if (result == JOptionPane.OK_OPTION) {
editor.updateChart(this.chart);
}
}
/**
* Copies the current chart to the system clipboard.
*
* @since 1.0.13
*/
public void doCopy() {
Clipboard systemClipboard
= Toolkit.getDefaultToolkit().getSystemClipboard();
Insets insets = getInsets();
int w = getWidth() - insets.left - insets.right;
int h = getHeight() - insets.top - insets.bottom;
ChartTransferable selection = new ChartTransferable(this.chart, w, h,
getMinimumDrawWidth(), getMinimumDrawHeight(),
getMaximumDrawWidth(), getMaximumDrawHeight(), true);
systemClipboard.setContents(selection, null);
}
/**
* Opens a file chooser and gives the user an opportunity to save the chart
* in PNG format.
*
* @throws IOException if there is an I/O error.
*/
public void doSaveAs() throws IOException {
JFileChooser fileChooser = new JFileChooser();
fileChooser.setCurrentDirectory(this.defaultDirectoryForSaveAs);
ExtensionFileFilter filter = new ExtensionFileFilter(
localizationResources.getString("PNG_Image_Files"), ".png");
fileChooser.addChoosableFileFilter(filter);
int option = fileChooser.showSaveDialog(this);
if (option == JFileChooser.APPROVE_OPTION) {
String filename = fileChooser.getSelectedFile().getPath();
if (isEnforceFileExtensions()) {
if (!filename.endsWith(".png")) {
filename = filename + ".png";
}
}
ChartUtilities.saveChartAsPNG(new File(filename), this.chart,
getWidth(), getHeight());
}
}
/**
* Creates a print job for the chart.
*/
public void createChartPrintJob() {
PrinterJob job = PrinterJob.getPrinterJob();
PageFormat pf = job.defaultPage();
PageFormat pf2 = job.pageDialog(pf);
if (pf2 != pf) {
job.setPrintable(this, pf2);
if (job.printDialog()) {
try {
job.print();
}
catch (PrinterException e) {
JOptionPane.showMessageDialog(this, e);
}
}
}
}
/**
* Prints the chart on a single page.
*
* @param g the graphics context.
* @param pf the page format to use.
* @param pageIndex the index of the page. If not 0, nothing
* gets print.
*
* @return The result of printing.
*/
public int print(Graphics g, PageFormat pf, int pageIndex) {
if (pageIndex != 0) {
return NO_SUCH_PAGE;
}
Graphics2D g2 = (Graphics2D) g;
double x = pf.getImageableX();
double y = pf.getImageableY();
double w = pf.getImageableWidth();
double h = pf.getImageableHeight();
this.chart.draw(g2, new Rectangle2D.Double(x, y, w, h), this.anchor,
null);
return PAGE_EXISTS;
}
/**
* Adds a listener to the list of objects listening for chart mouse events.
*
* @param listener the listener (null not permitted).
*/
public void addChartMouseListener(ChartMouseListener listener) {
if (listener == null) {
throw new IllegalArgumentException("Null 'listener' argument.");
}
this.chartMouseListeners.add(ChartMouseListener.class, listener);
}
/**
* Removes a listener from the list of objects listening for chart mouse
* events.
*
* @param listener the listener.
*/
public void removeChartMouseListener(ChartMouseListener listener) {
this.chartMouseListeners.remove(ChartMouseListener.class, listener);
}
/**
* Returns an array of the listeners of the given type registered with the
* panel.
*
* @param listenerType the listener type.
*
* @return An array of listeners.
*/
public EventListener[] getListeners(Class listenerType) {
if (listenerType == ChartMouseListener.class) {
// fetch listeners from local storage
return this.chartMouseListeners.getListeners(listenerType);
}
else {
return super.getListeners(listenerType);
}
}
/**
* Creates a popup menu for the panel.
*
* @param properties include a menu item for the chart property editor.
* @param save include a menu item for saving the chart.
* @param print include a menu item for printing the chart.
* @param zoom include menu items for zooming.
*
* @return The popup menu.
*/
protected JPopupMenu createPopupMenu(boolean properties, boolean save,
boolean print, boolean zoom) {
return createPopupMenu(properties, false, save, print, zoom);
}
/**
* Creates a popup menu for the panel.
*
* @param properties include a menu item for the chart property editor.
* @param copy include a menu item for copying to the clipboard.
* @param save include a menu item for saving the chart.
* @param print include a menu item for printing the chart.
* @param zoom include menu items for zooming.
*
* @return The popup menu.
*
* @since 1.0.13
*/
protected JPopupMenu createPopupMenu(boolean properties,
boolean copy, boolean save, boolean print, boolean zoom) {
JPopupMenu result = new JPopupMenu(localizationResources.getString("Chart") + ":");
boolean separator = false;
if (properties) {
JMenuItem propertiesItem = new JMenuItem(
localizationResources.getString("Properties..."));
propertiesItem.setActionCommand(PROPERTIES_COMMAND);
propertiesItem.addActionListener(this);
result.add(propertiesItem);
separator = true;
}
if (copy) {
if (separator) {
result.addSeparator();
separator = false;
}
JMenuItem copyItem = new JMenuItem(
localizationResources.getString("Copy"));
copyItem.setActionCommand(COPY_COMMAND);
copyItem.addActionListener(this);
result.add(copyItem);
separator = !save;
}
if (save) {
if (separator) {
result.addSeparator();
separator = false;
}
JMenuItem saveItem = new JMenuItem(
localizationResources.getString("Save_as..."));
saveItem.setActionCommand(SAVE_COMMAND);
saveItem.addActionListener(this);
result.add(saveItem);
separator = true;
}
if (print) {
if (separator) {
result.addSeparator();
separator = false;
}
JMenuItem printItem = new JMenuItem(
localizationResources.getString("Print..."));
printItem.setActionCommand(PRINT_COMMAND);
printItem.addActionListener(this);
result.add(printItem);
separator = true;
}
if (zoom) {
if (separator) {
result.addSeparator();
separator = false;
}
JMenu zoomInMenu = new JMenu(
localizationResources.getString("Zoom_In"));
this.zoomInBothMenuItem = new JMenuItem(
localizationResources.getString("All_Axes"));
this.zoomInBothMenuItem.setActionCommand(ZOOM_IN_BOTH_COMMAND);
this.zoomInBothMenuItem.addActionListener(this);
zoomInMenu.add(this.zoomInBothMenuItem);
zoomInMenu.addSeparator();
this.zoomInDomainMenuItem = new JMenuItem(
localizationResources.getString("Domain_Axis"));
this.zoomInDomainMenuItem.setActionCommand(ZOOM_IN_DOMAIN_COMMAND);
this.zoomInDomainMenuItem.addActionListener(this);
zoomInMenu.add(this.zoomInDomainMenuItem);
this.zoomInRangeMenuItem = new JMenuItem(
localizationResources.getString("Range_Axis"));
this.zoomInRangeMenuItem.setActionCommand(ZOOM_IN_RANGE_COMMAND);
this.zoomInRangeMenuItem.addActionListener(this);
zoomInMenu.add(this.zoomInRangeMenuItem);
result.add(zoomInMenu);
JMenu zoomOutMenu = new JMenu(
localizationResources.getString("Zoom_Out"));
this.zoomOutBothMenuItem = new JMenuItem(
localizationResources.getString("All_Axes"));
this.zoomOutBothMenuItem.setActionCommand(ZOOM_OUT_BOTH_COMMAND);
this.zoomOutBothMenuItem.addActionListener(this);
zoomOutMenu.add(this.zoomOutBothMenuItem);
zoomOutMenu.addSeparator();
this.zoomOutDomainMenuItem = new JMenuItem(
localizationResources.getString("Domain_Axis"));
this.zoomOutDomainMenuItem.setActionCommand(
ZOOM_OUT_DOMAIN_COMMAND);
this.zoomOutDomainMenuItem.addActionListener(this);
zoomOutMenu.add(this.zoomOutDomainMenuItem);
this.zoomOutRangeMenuItem = new JMenuItem(
localizationResources.getString("Range_Axis"));
this.zoomOutRangeMenuItem.setActionCommand(ZOOM_OUT_RANGE_COMMAND);
this.zoomOutRangeMenuItem.addActionListener(this);
zoomOutMenu.add(this.zoomOutRangeMenuItem);
result.add(zoomOutMenu);
JMenu autoRangeMenu = new JMenu(
localizationResources.getString("Auto_Range"));
this.zoomResetBothMenuItem = new JMenuItem(
localizationResources.getString("All_Axes"));
this.zoomResetBothMenuItem.setActionCommand(
ZOOM_RESET_BOTH_COMMAND);
this.zoomResetBothMenuItem.addActionListener(this);
autoRangeMenu.add(this.zoomResetBothMenuItem);
autoRangeMenu.addSeparator();
this.zoomResetDomainMenuItem = new JMenuItem(
localizationResources.getString("Domain_Axis"));
this.zoomResetDomainMenuItem.setActionCommand(
ZOOM_RESET_DOMAIN_COMMAND);
this.zoomResetDomainMenuItem.addActionListener(this);
autoRangeMenu.add(this.zoomResetDomainMenuItem);
this.zoomResetRangeMenuItem = new JMenuItem(
localizationResources.getString("Range_Axis"));
this.zoomResetRangeMenuItem.setActionCommand(
ZOOM_RESET_RANGE_COMMAND);
this.zoomResetRangeMenuItem.addActionListener(this);
autoRangeMenu.add(this.zoomResetRangeMenuItem);
result.addSeparator();
result.add(autoRangeMenu);
}
return result;
}
/**
* The idea is to modify the zooming options depending on the type of chart
* being displayed by the panel.
*
* @param x horizontal position of the popup.
* @param y vertical position of the popup.
*/
protected void displayPopupMenu(int x, int y) {
if (this.popup == null) {
return;
}
// go through each zoom menu item and decide whether or not to
// enable it...
boolean isDomainZoomable = false;
boolean isRangeZoomable = false;
Plot plot = (this.chart != null ? this.chart.getPlot() : null);
if (plot instanceof Zoomable) {
Zoomable z = (Zoomable) plot;
isDomainZoomable = z.isDomainZoomable();
isRangeZoomable = z.isRangeZoomable();
}
if (this.zoomInDomainMenuItem != null) {
this.zoomInDomainMenuItem.setEnabled(isDomainZoomable);
}
if (this.zoomOutDomainMenuItem != null) {
this.zoomOutDomainMenuItem.setEnabled(isDomainZoomable);
}
if (this.zoomResetDomainMenuItem != null) {
this.zoomResetDomainMenuItem.setEnabled(isDomainZoomable);
}
if (this.zoomInRangeMenuItem != null) {
this.zoomInRangeMenuItem.setEnabled(isRangeZoomable);
}
if (this.zoomOutRangeMenuItem != null) {
this.zoomOutRangeMenuItem.setEnabled(isRangeZoomable);
}
if (this.zoomResetRangeMenuItem != null) {
this.zoomResetRangeMenuItem.setEnabled(isRangeZoomable);
}
if (this.zoomInBothMenuItem != null) {
this.zoomInBothMenuItem.setEnabled(isDomainZoomable
&& isRangeZoomable);
}
if (this.zoomOutBothMenuItem != null) {
this.zoomOutBothMenuItem.setEnabled(isDomainZoomable
&& isRangeZoomable);
}
if (this.zoomResetBothMenuItem != null) {
this.zoomResetBothMenuItem.setEnabled(isDomainZoomable
&& isRangeZoomable);
}
this.popup.show(this, x, y);
}
/**
* Updates the UI for a LookAndFeel change.
*/
public void updateUI() {
// here we need to update the UI for the popup menu, if the panel
// has one...
if (this.popup != null) {
SwingUtilities.updateComponentTreeUI(this.popup);
}
super.updateUI();
}
/**
* Provides serialization support.
*
* @param stream the output stream.
*
* @throws IOException if there is an I/O error.
*/
private void writeObject(ObjectOutputStream stream) throws IOException {
stream.defaultWriteObject();
SerialUtilities.writePaint(this.zoomFillPaint, stream);
SerialUtilities.writePaint(this.zoomOutlinePaint, stream);
}
/**
* Provides serialization support.
*
* @param stream the input stream.
*
* @throws IOException if there is an I/O error.
* @throws ClassNotFoundException if there is a classpath problem.
*/
private void readObject(ObjectInputStream stream)
throws IOException, ClassNotFoundException {
stream.defaultReadObject();
this.zoomFillPaint = SerialUtilities.readPaint(stream);
this.zoomOutlinePaint = SerialUtilities.readPaint(stream);
// we create a new but empty chartMouseListeners list
this.chartMouseListeners = new EventListenerList();
// register as a listener with sub-components...
if (this.chart != null) {
this.chart.addChangeListener(this);
}
}
}