info.monitorenter.gui.chart.errorbars.ErrorBarPainter Maven / Gradle / Ivy
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/*
* ErrorBarPainter.java of project jchart2d, base class for an error bar painter that allows configuration of the way the segment, start
* point and end point of an error bar is painted by the use of info.monitorenter.gui.chart.IPointPainter. Copyright (c) 2007 - 2011 Achim
* Westermann, created on 03.09.2006 19:55:53.
*
* 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 St, Fifth Floor, Boston, MA 02110-1301 USA* If you modify or optimize the code in a useful way please let
* me know. [email protected]
*/
package info.monitorenter.gui.chart.errorbars;
import info.monitorenter.gui.chart.Chart2D;
import info.monitorenter.gui.chart.IErrorBarPainter;
import info.monitorenter.gui.chart.IErrorBarPixel;
import info.monitorenter.gui.chart.IPointPainter;
import info.monitorenter.gui.chart.IPointPainterConfigurableUI;
import info.monitorenter.gui.chart.ITracePoint2D;
import info.monitorenter.gui.chart.pointpainters.PointPainterDisc;
import info.monitorenter.gui.chart.pointpainters.PointPainterLine;
import java.awt.Color;
import java.awt.Graphics;
import java.beans.PropertyChangeListener;
import java.beans.PropertyChangeSupport;
import javax.swing.event.SwingPropertyChangeSupport;
/**
* Implementation of an error bar painter that allows configuration of the way the connection, start point and end point of an error bar is
* painted by the use of {@link info.monitorenter.gui.chart.IPointPainter}.
*
*
* Property change events are fired as described in method
*
* {@link info.monitorenter.gui.chart.IErrorBarPainter#addPropertyChangeListener(String, PropertyChangeListener) } . Note that
* adding property change listeners to the nested access facades of type
* {@link info.monitorenter.gui.chart.IErrorBarPainter.ISegment} accessible via getXXXSegment() methods will fire
* the corresponding events for listeners of this instance (as they delegate the calls) while they fire events for properties defined in
* {@link info.monitorenter.gui.chart.IErrorBarPainter.ISegment} too. If you register for events of this instance and for the
* retrieved segments you will receive two {@link PropertyChangeListener#propertyChange(java.beans.PropertyChangeEvent)} for
* the same value changed.
*
*
* @author Achim Westermann
*
* @version $Revision: 1.27 $
*/
public class ErrorBarPainter implements IErrorBarPainter {
/**
* Base class for ISegment implementations that covers common features such as property change support.
*
*
* @author Achim Westermann
*
*
* @version $Revision: 1.27 $
*/
private abstract class ASegment implements ISegment {
/** Generated serialVersionUID. **/
private static final long serialVersionUID = 6620706884643200785L;
/**
* Defcon.
*
*/
protected ASegment() {
super();
}
/**
* Properties supported are defined in
* {@link IErrorBarPainter#addPropertyChangeListener(String, PropertyChangeListener)}
* .
*
*
* Note that adding property change listeners to the nested access facades of type {@link IErrorBarPainter.ISegment}
* accessible via getXXXSegment() methods will fire the corresponding events for listeners of this instance (as they
* delegate the calls) while they fire events for properties defined in {@link IErrorBarPainter.ISegment} too. If you
* register for events of this instance and for the retrieved segments you will receive two
* {@link PropertyChangeListener#propertyChange(java.beans.PropertyChangeEvent)} for the same value changed.
*
*
* @see info.monitorenter.gui.chart.IErrorBarPainter.ISegment#addPropertyChangeListener(java.lang.String,
* java.beans.PropertyChangeListener)
*/
public void addPropertyChangeListener(final String property, final PropertyChangeListener listener) {
ErrorBarPainter.this.addPropertyChangeListener(property, listener);
}
}
/** Generated serialVersionUID. */
private static final long serialVersionUID = -4978322492200966266L;
/**
* The renderer of the connection (distance between origin and end of error bar) of error bars.
*/
private IPointPainterConfigurableUI m_connectionPainter;
/**
* The renderer of the end point of error bars.
*/
private IPointPainterConfigurableUI m_endPointPainter;
/**
* The instance that add support for firing PropertyChangeEvents and maintaining PropertyChangeListeners.
*
*/
protected PropertyChangeSupport m_propertyChangeSupport = new SwingPropertyChangeSupport(this);
/**
* The facade instance for accessing the connection segment of this configurable error bar painter.
*
*/
private final ISegment m_segmentConnection = new ASegment() {
/** Generated serialVersionUID. */
private static final long serialVersionUID = 2582262217019921050L;
/**
* @see info.monitorenter.gui.chart.IErrorBarPainter.ISegment#getColor()
*/
public Color getColor() {
return ErrorBarPainter.this.getConnectionColor();
}
/**
*
* @see info.monitorenter.gui.chart.IErrorBarPainter.ISegment#getName()
*/
public String getName() {
return "Connection segment";
}
/**
* @see info.monitorenter.gui.chart.IErrorBarPainter.ISegment#getPointPainter()
*/
public IPointPainterConfigurableUI getPointPainter() {
return ErrorBarPainter.this.getConnectionPainter();
}
/**
* @see info.monitorenter.gui.chart.IErrorBarPainter.ISegment#getPropertySegmentColor()
*/
public final String getPropertySegmentColor() {
return IErrorBarPainter.PROPERTY_CONNECTION_COLOR;
}
/**
* @see info.monitorenter.gui.chart.IErrorBarPainter.ISegment#getPropertySegmentPointPainter()
*/
public final String getPropertySegmentPointPainter() {
return IErrorBarPainter.PROPERTY_CONNECTION;
}
/**
* @see info.monitorenter.gui.chart.IErrorBarPainter.ISegment#setColor(java.awt.Color)
*/
public void setColor(final Color color) {
// fires the property change event:
ErrorBarPainter.this.setConnectionColor(color);
}
/**
* @see info.monitorenter.gui.chart.IErrorBarPainter.ISegment#setPointPainter(IPointPainterConfigurableUI)
*/
public void setPointPainter(final IPointPainterConfigurableUI pointPainter) {
// fires the property change event:
ErrorBarPainter.this.setConnectionPainter(pointPainter);
}
};
/**
* The facade instance for accessing the end segment of this configurable error bar painter.
*
*/
private final ISegment m_segmentEnd = new ASegment() {
/** Generated serialVersionUID. */
private static final long serialVersionUID = -5655272957651523988L;
/**
* @see info.monitorenter.gui.chart.IErrorBarPainter.ISegment#getColor()
*/
public Color getColor() {
return ErrorBarPainter.this.getEndPointColor();
}
public String getName() {
return "End segment";
}
/**
* @see info.monitorenter.gui.chart.IErrorBarPainter.ISegment#getPointPainter()
*/
public IPointPainterConfigurableUI getPointPainter() {
return ErrorBarPainter.this.getEndPointPainter();
}
/**
* @see info.monitorenter.gui.chart.IErrorBarPainter.ISegment#getPropertySegmentColor()
*/
public String getPropertySegmentColor() {
return IErrorBarPainter.PROPERTY_ENDPOINT_COLOR;
}
/**
* @see info.monitorenter.gui.chart.IErrorBarPainter.ISegment#getPropertySegmentPointPainter()
*/
public String getPropertySegmentPointPainter() {
return IErrorBarPainter.PROPERTY_ENDPOINT;
}
/**
* @see info.monitorenter.gui.chart.IErrorBarPainter.ISegment#setColor(java.awt.Color)
*/
public void setColor(final Color color) {
// fires the property change event:
ErrorBarPainter.this.setEndPointColor(color);
}
/**
* @see info.monitorenter.gui.chart.IErrorBarPainter.ISegment#setPointPainter(IPointPainterConfigurableUI)
*/
public void setPointPainter(final IPointPainterConfigurableUI pointPainter) {
// fires the property change event:
ErrorBarPainter.this.setEndPointPainter(pointPainter);
}
};
/**
* The facade instance for accessing the start segment of this configurable error bar painter.
*
*/
private final ISegment m_segmentStart = new ASegment() {
/** Generated serialVersionUID. */
private static final long serialVersionUID = -1547300597027982211L;
/**
* @see info.monitorenter.gui.chart.IErrorBarPainter.ISegment#getColor()
*/
public Color getColor() {
return ErrorBarPainter.this.getStartPointColor();
}
/**
* @see info.monitorenter.gui.chart.IErrorBarPainter.ISegment#getName()
*/
public String getName() {
return "Start segment";
}
/**
* @see info.monitorenter.gui.chart.IErrorBarPainter.ISegment#getPointPainter()
*/
public IPointPainterConfigurableUI getPointPainter() {
return ErrorBarPainter.this.getStartPointPainter();
}
/**
* @see info.monitorenter.gui.chart.IErrorBarPainter.ISegment#getPropertySegmentColor()
*/
public String getPropertySegmentColor() {
return IErrorBarPainter.PROPERTY_STARTPOINT_COLOR;
}
/**
* @see info.monitorenter.gui.chart.IErrorBarPainter.ISegment#getPropertySegmentPointPainter()
*/
public String getPropertySegmentPointPainter() {
return IErrorBarPainter.PROPERTY_STARTPOINT;
}
/**
* @see info.monitorenter.gui.chart.IErrorBarPainter.ISegment#setColor(java.awt.Color)
*/
public void setColor(final Color color) {
// fires the property change event:
ErrorBarPainter.this.setStartPointColor(color);
}
/**
* @see info.monitorenter.gui.chart.IErrorBarPainter.ISegment#setPointPainter(IPointPainterConfigurableUI)
*/
public void setPointPainter(final IPointPainterConfigurableUI pointPainter) {
// fires the property change event:
ErrorBarPainter.this.setStartPointPainter(pointPainter);
}
};
/**
* The renderer of the start point of error bars.
*/
private IPointPainterConfigurableUI m_startPointPainter;
/**
* Creates an instance that by default will not render any error bar.
*
*
* It then has to be configured with the remaining methods as desired.
*
*
* @see #setEndPointColor(Color)
* @see #setEndPointPainter(IPointPainterConfigurableUI)
* @see #setConnectionColor(Color)
* @see #setConnectionPainter(IPointPainterConfigurableUI)
* @see #setStartPointColor(Color)
* @see #setStartPointPainter(IPointPainterConfigurableUI)
*/
public ErrorBarPainter() {
super();
// set default values:
this.m_startPointPainter = null;
this.m_connectionPainter = new PointPainterLine();
this.m_endPointPainter = new PointPainterDisc(4);
}
/**
* @see info.monitorenter.gui.chart.IErrorBarPainter#addPropertyChangeListener(java.lang.String, java.beans.PropertyChangeListener)
*/
public final void addPropertyChangeListener(final String propertyName, final PropertyChangeListener listener) {
this.m_propertyChangeSupport.addPropertyChangeListener(propertyName, listener);
}
/**
* @see java.lang.Object#equals(java.lang.Object)
*/
@Override
public boolean equals(final Object obj) {
if (this == obj) {
return true;
}
if (obj == null) {
return false;
}
if (this.getClass() != obj.getClass()) {
return false;
}
final ErrorBarPainter other = (ErrorBarPainter) obj;
if (this.m_connectionPainter == null) {
if (other.m_connectionPainter != null) {
return false;
}
} else if (!this.m_connectionPainter.equals(other.m_connectionPainter)) {
return false;
}
if (this.m_endPointPainter == null) {
if (other.m_endPointPainter != null) {
return false;
}
} else if (!this.m_endPointPainter.equals(other.m_endPointPainter)) {
return false;
}
if (this.m_propertyChangeSupport == null) {
if (other.m_propertyChangeSupport != null) {
return false;
}
} else if (!this.m_propertyChangeSupport.equals(other.m_propertyChangeSupport)) {
return false;
}
if (this.m_segmentConnection == null) {
if (other.m_segmentConnection != null) {
return false;
}
} else if (!this.m_segmentConnection.equals(other.m_segmentConnection)) {
return false;
}
if (this.m_segmentEnd == null) {
if (other.m_segmentEnd != null) {
return false;
}
} else if (!this.m_segmentEnd.equals(other.m_segmentEnd)) {
return false;
}
if (this.m_segmentStart == null) {
if (other.m_segmentStart != null) {
return false;
}
} else if (!this.m_segmentStart.equals(other.m_segmentStart)) {
return false;
}
if (this.m_startPointPainter == null) {
if (other.m_startPointPainter != null) {
return false;
}
} else if (!this.m_startPointPainter.equals(other.m_startPointPainter)) {
return false;
}
return true;
}
/**
* @see info.monitorenter.gui.chart.IErrorBarPainter#getConnectionColor()
*/
public final Color getConnectionColor() {
Color result = this.getDefaultedColor(this.m_connectionPainter);
return result;
}
/**
* @see info.monitorenter.gui.chart.IErrorBarPainter#getConnectionPainter()
*/
public final IPointPainterConfigurableUI getConnectionPainter() {
return this.m_connectionPainter;
}
/**
* @see info.monitorenter.gui.chart.IErrorBarPainter#getEndPointColor()
*/
public final Color getEndPointColor() {
Color result = this.getDefaultedColor(this.m_endPointPainter);
return result;
}
/**
* @see info.monitorenter.gui.chart.IErrorBarPainter#getEndPointPainter()
*/
public final IPointPainterConfigurableUI getEndPointPainter() {
return this.m_endPointPainter;
}
/**
* @see info.monitorenter.gui.chart.IErrorBarPainter#getPropertyChangeListeners(java.lang.String)
*/
public PropertyChangeListener[] getPropertyChangeListeners(final String property) {
return this.m_propertyChangeSupport.getPropertyChangeListeners(property);
}
/**
* @see info.monitorenter.gui.chart.IErrorBarPainter#getSegmentConnection()
*/
public ISegment getSegmentConnection() {
return this.m_segmentConnection;
}
/**
* @see info.monitorenter.gui.chart.IErrorBarPainter#getSegmentEnd()
*/
public ISegment getSegmentEnd() {
return this.m_segmentEnd;
}
/**
* @see info.monitorenter.gui.chart.IErrorBarPainter#getSegmentStart()
*/
public ISegment getSegmentStart() {
return this.m_segmentStart;
}
/**
* Default color for all segments in case their {@link IPointPainterConfigurableUI} has not been configured with a color.
*/
public static final Color DEFAULT_SEGMENT_COLOR = Color.GRAY;
/**
* @see info.monitorenter.gui.chart.IErrorBarPainter#getStartPointColor()
*/
public final Color getStartPointColor() {
Color result = this.getDefaultedColor(this.m_startPointPainter);
return result;
}
/**
* Internal routine that returns the default color in case the argument or it's color is null (factored out code).
*
*
* @param painter
* the painter to check for color.
*
* @return the color of the given painter or {@link #DEFAULT_SEGMENT_COLOR} in case the color or the painter was null.
*/
private Color getDefaultedColor(final IPointPainterConfigurableUI painter) {
Color result = null;
if (painter != null) {
result = painter.getColor();
}
if (result == null) {
result = DEFAULT_SEGMENT_COLOR;
}
return result;
}
/**
* @see info.monitorenter.gui.chart.IErrorBarPainter#getStartPointPainter()
*/
public final IPointPainterConfigurableUI getStartPointPainter() {
return this.m_startPointPainter;
}
/**
* @see java.lang.Object#hashCode()
*/
@Override
public int hashCode() {
final int prime = 31;
int result = 1;
result = prime * result + ((this.m_connectionPainter == null) ? 0 : this.m_connectionPainter.hashCode());
result = prime * result + ((this.m_endPointPainter == null) ? 0 : this.m_endPointPainter.hashCode());
result = prime * result + ((this.m_propertyChangeSupport == null) ? 0 : this.m_propertyChangeSupport.hashCode());
result = prime * result + ((this.m_segmentConnection == null) ? 0 : this.m_segmentConnection.hashCode());
result = prime * result + ((this.m_segmentEnd == null) ? 0 : this.m_segmentEnd.hashCode());
result = prime * result + ((this.m_segmentStart == null) ? 0 : this.m_segmentStart.hashCode());
result = prime * result + ((this.m_startPointPainter == null) ? 0 : this.m_startPointPainter.hashCode());
return result;
}
/**
* @see info.monitorenter.gui.chart.IErrorBarPainter#paintErrorBar(int, int, ITracePoint2D, Graphics, IErrorBarPixel)
*/
public void paintErrorBar(final int absoluteX, final int absoluteY, final ITracePoint2D original, final Graphics g,
final IErrorBarPixel errorBar) {
final Chart2D chart = errorBar.getTrace().getRenderer();
// If some range policy is used that restricts the viewport ensure,
// that we don't paint offscreen:
final int xStart = chart.getXChartStart();
final int xEnd = chart.getXChartEnd();
final int yStart = chart.getYChartStart();
final int yEnd = chart.getYChartEnd();
int x1;
int y1;
int x2;
int y2;
// x1
if (absoluteX < xStart) {
x1 = xStart;
} else {
x1 = absoluteX;
}
if (absoluteX > xEnd) {
x1 = xEnd;
} else {
x1 = absoluteX;
}
// y1
if (absoluteY > yStart) {
y1 = yStart;
} else {
y1 = absoluteY;
}
if (absoluteY < yEnd) {
y1 = yEnd;
} else {
y1 = absoluteY;
}
// negative x error:
int error = errorBar.getNegativeXErrorPixel();
if (error != IErrorBarPixel.ERROR_PIXEL_NONE) {
y2 = y1;
if (error < xStart) {
x2 = xStart;
} else {
x2 = error;
}
this.paintErrorBarPart(x1, y1, x2, y2, original, this.m_connectionPainter, g);
this.paintErrorBarPart(x1, y1, x2, y2, original, this.m_startPointPainter, g);
// don't paint end point if bounds were exceeded:
if (x2 == error) {
this.paintErrorBarPart(x2, y1, x1, y1, original, this.m_endPointPainter, g);
}
}
// positive x error:
error = errorBar.getPositiveXErrorPixel();
if (error != IErrorBarPixel.ERROR_PIXEL_NONE) {
y2 = y1;
if (error > xEnd) {
x2 = xEnd;
} else {
x2 = error;
}
this.paintErrorBarPart(x1, y1, x2, y2, original, this.m_connectionPainter, g);
this.paintErrorBarPart(x1, y1, x2, y2, original, this.m_startPointPainter, g);
// don't paint end point if bounds were exceeded:
if (x2 == error) {
this.paintErrorBarPart(x2, y1, x1, y1, original, this.m_endPointPainter, g);
}
}
// negative y error:
error = errorBar.getNegativeYErrorPixel();
if (error != IErrorBarPixel.ERROR_PIXEL_NONE) {
x2 = x1;
if (error > yStart) {
y2 = yStart;
} else {
y2 = error;
}
this.paintErrorBarPart(x1, y1, x2, y2, original, this.m_connectionPainter, g);
this.paintErrorBarPart(x1, y1, x2, y2, original, this.m_startPointPainter, g);
// don't paint end point if bounds were exceeded:
if (y2 == error) {
this.paintErrorBarPart(x1, y2, x1, y1, original, this.m_endPointPainter, g);
}
}
// positive y error:
error = errorBar.getPositiveYErrorPixel();
if (error != IErrorBarPixel.ERROR_PIXEL_NONE) {
x2 = x1;
if (error < yEnd) {
y2 = yEnd;
} else {
y2 = error;
}
this.paintErrorBarPart(x1, y1, x2, y2, original, this.m_connectionPainter, g);
this.paintErrorBarPart(x1, y1, x2, y2, original, this.m_startPointPainter, g);
// don't paint end point if bounds were exceeded:
if (y2 == error) {
this.paintErrorBarPart(x1, y2, x1, y1, original, this.m_endPointPainter, g);
}
}
}
/**
* Internally renders the given part of the error bar with support for color and invisibility (null painter) management.
*
* Factored out code to keep calling method {@link #paintErrorBar(int, int, ITracePoint2D, Graphics, IErrorBarPixel)} smaller.
*
*
* @param absoluteX
* the x coordinate in px of the error bar part.
*
* @param absoluteY
* the y coordinate in px of the error bar part.
*
* @param nextX
* the next x coordinate in px of the error bar part (only relevant for connection).
*
* @param nextY
* the next y coordinate in px of the error bar part (only relevant for connection).
*
* @param pointPainter
* the painter to use.
*
* @param g2d
* needed for painting.
*
* @param original
* the original trace point this error bar is painted for.
*/
private final void paintErrorBarPart(final int absoluteX, final int absoluteY, final int nextX, final int nextY,
final ITracePoint2D original, final IPointPainter pointPainter, final Graphics g2d) {
if (pointPainter != null) {
pointPainter.paintPoint(absoluteX, absoluteY, nextX, nextY, g2d, original);
}
}
/**
* @see info.monitorenter.gui.chart.IErrorBarPainter#removePropertyChangeListener(java.beans.PropertyChangeListener)
*/
public void removePropertyChangeListener(final PropertyChangeListener listener) {
this.m_propertyChangeSupport.removePropertyChangeListener(listener);
}
/**
* @see info.monitorenter.gui.chart.IErrorBarPainter#removePropertyChangeListener(java.lang.String, java.beans.PropertyChangeListener)
*/
public void removePropertyChangeListener(final String property, final PropertyChangeListener listener) {
this.m_propertyChangeSupport.removePropertyChangeListener(property, listener);
}
/**
* @see info.monitorenter.gui.chart.IErrorBarPainter#setConnectionColor(java.awt.Color)
*/
public final void setConnectionColor(final Color connectionColor) {
if (this.m_connectionPainter != null) {
final Color old = this.m_connectionPainter.getColor();
this.m_connectionPainter.setColor(connectionColor);
this.m_propertyChangeSupport.firePropertyChange(IErrorBarPainter.PROPERTY_CONNECTION_COLOR, old, connectionColor);
}
}
/**
* @see info.monitorenter.gui.chart.IErrorBarPainter#setConnectionPainter(info.monitorenter.gui.chart.IPointPainterConfigurableUI)
*/
public final void setConnectionPainter(final IPointPainterConfigurableUI connectionPainter) {
final IPointPainter old = this.m_connectionPainter;
if (this.m_connectionPainter != null) {
final Color oldColor = this.m_connectionPainter.getColor();
if (oldColor != null) {
if (connectionPainter != null) {
connectionPainter.setColor(oldColor);
}
}
}
this.m_connectionPainter = connectionPainter;
this.m_propertyChangeSupport.firePropertyChange(IErrorBarPainter.PROPERTY_CONNECTION, old, connectionPainter);
}
/**
* @see info.monitorenter.gui.chart.IErrorBarPainter#setEndPointColor(java.awt.Color)
*/
public final void setEndPointColor(final Color endPointColor) {
if (this.m_endPointPainter != null) {
final Color old = this.m_endPointPainter.getColor();
this.m_endPointPainter.setColor(endPointColor);
this.m_propertyChangeSupport.firePropertyChange(IErrorBarPainter.PROPERTY_ENDPOINT_COLOR, old, endPointColor);
}
}
/**
* @see info.monitorenter.gui.chart.IErrorBarPainter#setEndPointPainter(info.monitorenter.gui.chart.IPointPainterConfigurableUI)
*/
public final void setEndPointPainter(final IPointPainterConfigurableUI endPointPainter) {
final IPointPainter old = this.m_endPointPainter;
if (this.m_endPointPainter != null) {
final Color oldColor = this.m_endPointPainter.getColor();
if (oldColor != null) {
if (endPointPainter != null) {
endPointPainter.setColor(oldColor);
}
}
}
this.m_endPointPainter = endPointPainter;
this.m_propertyChangeSupport.firePropertyChange(IErrorBarPainter.PROPERTY_ENDPOINT, old, endPointPainter);
}
/**
* @see info.monitorenter.gui.chart.IErrorBarPainter#setStartPointColor(java.awt.Color)
*/
public final void setStartPointColor(final Color startPointColor) {
if (this.m_startPointPainter != null) {
final Color old = this.m_startPointPainter.getColor();
this.m_startPointPainter.setColor(startPointColor);
this.m_propertyChangeSupport.firePropertyChange(IErrorBarPainter.PROPERTY_STARTPOINT_COLOR, old, startPointColor);
}
}
/**
* @see info.monitorenter.gui.chart.IErrorBarPainter#setStartPointPainter(IPointPainterConfigurableUI)
*/
public final void setStartPointPainter(final IPointPainterConfigurableUI startPointPainter) {
final IPointPainter old = this.m_startPointPainter;
if (this.m_startPointPainter != null) {
final Color oldColor = this.m_startPointPainter.getColor();
if (oldColor != null) {
if (startPointPainter != null) {
startPointPainter.setColor(oldColor);
}
}
}
this.m_startPointPainter = startPointPainter;
this.m_propertyChangeSupport.firePropertyChange(IErrorBarPainter.PROPERTY_STARTPOINT, old, this.m_startPointPainter);
}
}