Java Code Examples for org.jfree.chart.entity.EntityCollection#getEntity()

/**
 * Returns the tooltip text.
 * 
 * @param canvas  the canvas that is displaying the chart.
 * @param x  the x-coordinate of the mouse pointer.
 * @param y  the y-coordinate of the mouse pointer.
 * 
 * @return String The tooltip text (possibly <code>null</code>).
  */
private String getTooltipText(ChartCanvas canvas, double x, double y) {
    ChartRenderingInfo info = canvas.getRenderingInfo();
    if (info == null) {
        return null;
    }
    EntityCollection entities = info.getEntityCollection();
    if (entities == null) {
        return null;
    }
    ChartEntity entity = entities.getEntity(x, y);
    if (entity == null) {
        return null;
    }
    return entity.getToolTipText();
}
 

/**
 * Returns a string for the tooltip.
 *
 * @param e  the mouse event.
 *
 * @return A tool tip or <code>null</code> if no tooltip is available.
 */
public String getToolTipText(org.eclipse.swt.events.MouseEvent e) {
    String result = null;
    if (this.info != null) {
        EntityCollection entities = this.info.getEntityCollection();
        if (entities != null) {
            Rectangle insets = getClientArea();
            ChartEntity entity = entities.getEntity(
                    (int) ((e.x - insets.x) / this.scaleX),
                    (int) ((e.y - insets.y) / this.scaleY));
            if (entity != null) {
                result = entity.getToolTipText();
            }
        }
    }
    return result;

}
 

/**
 * Returns a string for the tooltip.
 *
 * @param e  the mouse event.
 *
 * @return A tool tip or <code>null</code> 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;

}
 

/**
 * Find chartentities like JFreeChartEntity, AxisEntity, PlotEntity, TitleEntity, XY...
 * 
 * @param chart
 * @return
 */
public static ChartEntity findChartEntity(ChartCanvas chart, double mx, double my) {
  // TODO check if insets were needed
  // coordinates to find chart entities
  int x = (int) (mx / chart.getScaleX());
  int y = (int) (my / chart.getScaleY());

  ChartRenderingInfo info = chart.getRenderingInfo();
  ChartEntity entity = null;
  if (info != null) {
    EntityCollection entities = info.getEntityCollection();
    if (entities != null) {
      entity = entities.getEntity(x, y);
    }
  }
  return entity;
}
 

/**
 * Returns a string for the tooltip.
 *
 * @param e  the mouse event.
 *
 * @return A tool tip or <code>null</code> if no tooltip is available.
 */
public String getToolTipText(org.eclipse.swt.events.MouseEvent e) {
    String result = null;
    if (this.info != null) {
        EntityCollection entities = this.info.getEntityCollection();
        if (entities != null) {
            Rectangle insets = getClientArea();
            ChartEntity entity = entities.getEntity(
                    (int) ((e.x - insets.x) / this.scaleX),
                    (int) ((e.y - insets.y) / this.scaleY));
            if (entity != null) {
                result = entity.getToolTipText();
            }
        }
    }
    return result;

}
 

/**
 * Find chartentities like JFreeChartEntity, AxisEntity, PlotEntity, TitleEntity, XY...
 * 
 * @param chart
 * @param mx mouse coordinates
 * @param my mouse coordinates
 * @return
 */
public static ChartEntity findChartEntity(ChartPanel chart, double mx, double my) {
  // TODO check if insets were needed
  // coordinates to find chart entities
  Insets insets = chart.getInsets();
  int x = (int) ((mx - insets.left) / chart.getScaleX());
  int y = (int) ((my - insets.top) / chart.getScaleY());

  ChartRenderingInfo info = chart.getChartRenderingInfo();
  ChartEntity entity = null;
  if (info != null) {
    EntityCollection entities = info.getEntityCollection();
    if (entities != null) {
      entity = entities.getEntity(x, y);
    }
  }
  return entity;
}
 

/**
 * Returns a string for the tooltip.
 *
 * @param e  the mouse event.
 *
 * @return A tool tip or <code>null</code> if no tooltip is available.
 */
@Override
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;
}
 

/**
 * Returns a string for the tooltip.
 *
 * @param e  the mouse event.
 *
 * @return A tool tip or <code>null</code> if no tooltip is available.
 */
@Override
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;
}
 

/**
 * Returns the tooltip text.
 * 
 * @param canvas  the canvas that is displaying the chart.
 * @param x  the x-coordinate of the mouse pointer.
 * @param y  the y-coordinate of the mouse pointer.
 * 
 * @return String The tooltip text (possibly <code>null</code>).
  */
private String getTooltipText(ChartCanvas canvas, double x, double y) {
    ChartRenderingInfo info = canvas.getRenderingInfo();
    if (info == null) {
        return null;
    }
    EntityCollection entities = info.getEntityCollection();
    if (entities == null) {
        return null;
    }
    ChartEntity entity = entities.getEntity(x, y);
    if (entity == null) {
        return null;
    }
    return entity.getToolTipText();
}
 

/**
 * Returns a string for the tooltip.
 *
 * @param e  the mouse event.
 *
 * @return A tool tip or <code>null</code> if no tooltip is available.
 */
public String getToolTipText(org.eclipse.swt.events.MouseEvent e) {
    String result = null;
    if (this.info != null) {
        EntityCollection entities = this.info.getEntityCollection();
        if (entities != null) {
            Rectangle insets = getClientArea();
            ChartEntity entity = entities.getEntity(
                    (int) ((e.x - insets.x) / this.scaleX),
                    (int) ((e.y - insets.y) / this.scaleY));
            if (entity != null) {
                result = entity.getToolTipText();
            }
        }
    }
    return result;

}
 

/**
 * Creates an image map element that complies with the XHTML 1.0
 * specification.
 *
 * @param name  the map name (<code>null</code> not permitted).
 * @param info  the chart rendering info (<code>null</code> not permitted).
 * @param toolTipTagFragmentGenerator  a generator for the HTML fragment
 *     that will contain the tooltip text (<code>null</code> not permitted
 *     if <code>info</code> contains tooltip information).
 * @param urlTagFragmentGenerator  a generator for the HTML fragment that
 *     will contain the URL reference (<code>null</code> not permitted if
 *     <code>info</code> contains URLs).
 *
 * @return The map tag.
 */
public static String getImageMap(String name, ChartRenderingInfo info,
        ToolTipTagFragmentGenerator toolTipTagFragmentGenerator,
        URLTagFragmentGenerator urlTagFragmentGenerator) {

    StringBuffer sb = new StringBuffer();
    sb.append("<map id=\"" + htmlEscape(name) + "\" name=\""
            + htmlEscape(name) + "\">");
    sb.append(StringUtilities.getLineSeparator());
    EntityCollection entities = info.getEntityCollection();
    if (entities != null) {
        int count = entities.getEntityCount();
        for (int i = count - 1; i >= 0; i--) {
            ChartEntity entity = entities.getEntity(i);
            if (entity.getToolTipText() != null
                    || entity.getURLText() != null) {
                String area = entity.getImageMapAreaTag(
                        toolTipTagFragmentGenerator,
                        urlTagFragmentGenerator);
                if (area.length() > 0) {
                    sb.append(area);
                    sb.append(StringUtilities.getLineSeparator());
                }
            }
        }
    }
    sb.append("</map>");
    return sb.toString();

}
 

/**
 * Implementation of the MouseMotionListener's method.
 *
 * @param e  the event.
 */
@Override
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);
        }
    }

}
 

/**
 * 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.
 */
@Override
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);
    }

}
 

/**
 * Creates an image map element that complies with the XHTML 1.0
 * specification.
 *
 * @param name  the map name (<code>null</code> not permitted).
 * @param info  the chart rendering info (<code>null</code> not permitted).
 * @param toolTipTagFragmentGenerator  a generator for the HTML fragment
 *     that will contain the tooltip text (<code>null</code> not permitted 
 *     if <code>info</code> contains tooltip information).
 * @param urlTagFragmentGenerator  a generator for the HTML fragment that
 *     will contain the URL reference (<code>null</code> not permitted if 
 *     <code>info</code> contains URLs).
 *
 * @return The map tag.
 */
public static String getImageMap(String name, ChartRenderingInfo info,
        ToolTipTagFragmentGenerator toolTipTagFragmentGenerator,
        URLTagFragmentGenerator urlTagFragmentGenerator) {

    StringBuffer sb = new StringBuffer();
    sb.append("<map id=\"" + htmlEscape(name) + "\" name=\"" 
            + htmlEscape(name) + "\">");
    sb.append(StringUtilities.getLineSeparator());
    EntityCollection entities = info.getEntityCollection();
    if (entities != null) {
        int count = entities.getEntityCount();
        for (int i = count - 1; i >= 0; i--) {
            ChartEntity entity = entities.getEntity(i);
            if (entity.getToolTipText() != null 
                    || entity.getURLText() != null) {
                String area = entity.getImageMapAreaTag(
                        toolTipTagFragmentGenerator, 
                        urlTagFragmentGenerator);
                if (area.length() > 0) {
                    sb.append(area);
                    sb.append(StringUtilities.getLineSeparator());
                }
            }
        }
    }
    sb.append("</map>");
    return sb.toString();
    
}
 

/**
 * Creates an image map element that complies with the XHTML 1.0
 * specification.
 *
 * @param name  the map name (<code>null</code> not permitted).
 * @param info  the chart rendering info (<code>null</code> not permitted).
 * @param toolTipTagFragmentGenerator  a generator for the HTML fragment
 *     that will contain the tooltip text (<code>null</code> not permitted
 *     if <code>info</code> contains tooltip information).
 * @param urlTagFragmentGenerator  a generator for the HTML fragment that
 *     will contain the URL reference (<code>null</code> not permitted if
 *     <code>info</code> contains URLs).
 *
 * @return The map tag.
 */
public static String getImageMap(String name, ChartRenderingInfo info,
        ToolTipTagFragmentGenerator toolTipTagFragmentGenerator,
        URLTagFragmentGenerator urlTagFragmentGenerator) {

    StringBuilder sb = new StringBuilder();
    sb.append("<map id=\"").append(htmlEscape(name));
    sb.append("\" name=\"").append(htmlEscape(name)).append("\">");
    sb.append(StringUtils.getLineSeparator());
    EntityCollection entities = info.getEntityCollection();
    if (entities != null) {
        int count = entities.getEntityCount();
        for (int i = count - 1; i >= 0; i--) {
            ChartEntity entity = entities.getEntity(i);
            if (entity.getToolTipText() != null
                    || entity.getURLText() != null) {
                String area = entity.getImageMapAreaTag(
                        toolTipTagFragmentGenerator,
                        urlTagFragmentGenerator);
                if (area.length() > 0) {
                    sb.append(area);
                    sb.append(StringUtils.getLineSeparator());
                }
            }
        }
    }
    sb.append("</map>");
    return sb.toString();

}
 

/**
 * Returns the chart entity at a given point.
 * <P>
 * 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 <code>null</code>).
 */
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;

}
 

/**
 * Implementation of the MouseMotionListener's method.
 *
 * @param e  the event.
 */
@Override
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);
        }
    }

}
 

/**
 * Implementation of the MouseMotionListener's method.
 * 
 * @param e
 *            the event.
 */

@Override
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);
		}
	}

}
 

/**
 * Returns the chart entity at a given point.
 * <P>
 * 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 <code>null</code>).
 */
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 an optional image-map for the entry.
 *
 * @param bounds the bounds for which the image map is computed.
 * @return the computed image-map or null if there is no image-map available.
 */
public ImageMap getImageMap( final Rectangle2D bounds ) {
  if ( chartRenderingInfo == null ) {
    return null;
  }
  final Rectangle2D dataArea = getDataAreaOffset();
  final Rectangle2D otherArea = new Rectangle2D.Double();

  if ( ( ObjectUtilities.equal( bounds, this.bounds ) ) == false ) {
    final BufferedImage image = new BufferedImage( 1, 1, BufferedImage.TYPE_4BYTE_ABGR );
    final Graphics2D graphics = image.createGraphics();
    draw( graphics, bounds );
    graphics.dispose();
  }

  final ImageMap map = new ImageMap();
  final EntityCollection entityCollection = chartRenderingInfo.getEntityCollection();
  final int count = entityCollection.getEntityCount();
  for ( int i = 0; i < count; i++ ) {
    final ChartEntity chartEntity = entityCollection.getEntity( i );
    final Shape area = chartEntity.getArea();
    final String hrefValue = chartEntity.getURLText();
    final String tooltipValue = chartEntity.getToolTipText();
    if ( StringUtils.isEmpty( tooltipValue ) == false ||
      StringUtils.isEmpty( hrefValue ) == false ) {
      final AbstractImageMapEntry entry;
      if ( chartEntity instanceof XYItemEntity ||
        chartEntity instanceof CategoryItemEntity ||
        chartEntity instanceof PieSectionEntity ) {
        entry = createMapEntry( area, dataArea );
      } else {
        entry = createMapEntry( area, otherArea );
      }
      if ( entry == null ) {
        continue;
      }
      if ( StringUtils.isEmpty( hrefValue ) == false ) {
        entry.setAttribute( LibXmlInfo.XHTML_NAMESPACE, "href", hrefValue );
      } else {
        entry.setAttribute( LibXmlInfo.XHTML_NAMESPACE, "href", "#" );
      }
      if ( StringUtils.isEmpty( tooltipValue ) == false ) {
        entry.setAttribute( LibXmlInfo.XHTML_NAMESPACE, "title", tooltipValue );
      }
      map.addMapEntry( entry );
    }
  }

  return map;
}