Java tutorial
/* =========================================================== * JFreeChart : a free chart library for the Java(tm) platform * =========================================================== * * (C) Copyright 2000-2009, by Object Refinery Limited and Contributors. * * Project Info: http://www.jfree.org/jfreechart/index.html * * This library is free software; you can redistribute it and/or modify it * under the terms of the GNU Lesser General Public License as published by * the Free Software Foundation; either version 2.1 of the License, or * (at your option) any later version. * * This library is distributed in the hope that it will be useful, but * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public * License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, * USA. * * [Java is a trademark or registered trademark of Sun Microsystems, Inc. * in the United States and other countries.] * * --------------------------------- * AbstractCategoryItemRenderer.java * --------------------------------- * (C) Copyright 2002-2009, by Object Refinery Limited. * * Original Author: David Gilbert (for Object Refinery Limited); * Contributor(s): Richard Atkinson; * Peter Kolb (patch 2497611); * * Changes: * -------- * 29-May-2002 : Version 1 (DG); * 06-Jun-2002 : Added accessor methods for the tool tip generator (DG); * 11-Jun-2002 : Made constructors protected (DG); * 26-Jun-2002 : Added axis to initialise method (DG); * 05-Aug-2002 : Added urlGenerator member variable plus accessors (RA); * 22-Aug-2002 : Added categoriesPaint attribute, based on code submitted by * Janet Banks. This can be used when there is only one series, * and you want each category item to have a different color (DG); * 01-Oct-2002 : Fixed errors reported by Checkstyle (DG); * 29-Oct-2002 : Fixed bug where background image for plot was not being * drawn (DG); * 05-Nov-2002 : Replaced references to CategoryDataset with TableDataset (DG); * 26-Nov 2002 : Replaced the isStacked() method with getRangeType() (DG); * 09-Jan-2003 : Renamed grid-line methods (DG); * 17-Jan-2003 : Moved plot classes into separate package (DG); * 25-Mar-2003 : Implemented Serializable (DG); * 12-May-2003 : Modified to take into account the plot orientation (DG); * 12-Aug-2003 : Very minor javadoc corrections (DB) * 13-Aug-2003 : Implemented Cloneable (DG); * 16-Sep-2003 : Changed ChartRenderingInfo --> PlotRenderingInfo (DG); * 05-Nov-2003 : Fixed marker rendering bug (833623) (DG); * 21-Jan-2004 : Update for renamed method in ValueAxis (DG); * 11-Feb-2004 : Modified labelling for markers (DG); * 12-Feb-2004 : Updated clone() method (DG); * 15-Apr-2004 : Created a new CategoryToolTipGenerator interface (DG); * 05-May-2004 : Fixed bug (948310) where interval markers extend outside axis * range (DG); * 14-Jun-2004 : Fixed bug in drawRangeMarker() method - now uses 'paint' and * 'stroke' rather than 'outlinePaint' and 'outlineStroke' (DG); * 15-Jun-2004 : Interval markers can now use GradientPaint (DG); * 30-Sep-2004 : Moved drawRotatedString() from RefineryUtilities * --> TextUtilities (DG); * 01-Oct-2004 : Fixed bug 1029697, problem with label alignment in * drawRangeMarker() method (DG); * 07-Jan-2005 : Renamed getRangeExtent() --> findRangeBounds() (DG); * 21-Jan-2005 : Modified return type of calculateRangeMarkerTextAnchorPoint() * method (DG); * 08-Mar-2005 : Fixed positioning of marker labels (DG); * 20-Apr-2005 : Added legend label, tooltip and URL generators (DG); * 01-Jun-2005 : Handle one dimension of the marker label adjustment * automatically (DG); * 09-Jun-2005 : Added utility method for adding an item entity (DG); * ------------- JFREECHART 1.0.x --------------------------------------------- * 01-Mar-2006 : Updated getLegendItems() to check seriesVisibleInLegend * flags (DG); * 20-Jul-2006 : Set dataset and series indices in LegendItem (DG); * 23-Oct-2006 : Draw outlines for interval markers (DG); * 24-Oct-2006 : Respect alpha setting in markers, as suggested by Sergei * Ivanov in patch 1567843 (DG); * 30-Nov-2006 : Added a check for series visibility in the getLegendItem() * method (DG); * 07-Dec-2006 : Fix for equals() method (DG); * 22-Feb-2007 : Added createState() method (DG); * 01-Mar-2007 : Fixed interval marker drawing (patch 1670686 thanks to * Sergei Ivanov) (DG); * 20-Apr-2007 : Updated getLegendItem() for renderer change, and deprecated * itemLabelGenerator, toolTipGenerator and itemURLGenerator * override fields (DG); * 18-May-2007 : Set dataset and seriesKey for LegendItem (DG); * 17-Jun-2008 : Apply legend shape, font and paint attributes (DG); * 26-Jun-2008 : Added crosshair support (DG); * 25-Nov-2008 : Fixed bug in findRangeBounds() method (DG); * 14-Jan-2009 : Update initialise() to store visible series indices (PK); * 21-Jan-2009 : Added drawRangeLine() method (DG); * 27-Mar-2009 : Added new findRangeBounds() method to account for hidden * series (DG); * 01-Apr-2009 : Added new addEntity() method (DG); * */ package net.droidsolutions.droidcharts.core.renderer; import java.io.Serializable; import java.util.ArrayList; import java.util.List; import net.droidsolutions.droidcharts.awt.Ellipse2D; import net.droidsolutions.droidcharts.awt.Font; import net.droidsolutions.droidcharts.awt.Line2D; import net.droidsolutions.droidcharts.awt.Point2D; import net.droidsolutions.droidcharts.awt.Rectangle2D; import net.droidsolutions.droidcharts.awt.Shape; import net.droidsolutions.droidcharts.common.LengthAdjustmentType; import net.droidsolutions.droidcharts.common.ObjectList; import net.droidsolutions.droidcharts.common.RectangleAnchor; import net.droidsolutions.droidcharts.common.RectangleEdge; import net.droidsolutions.droidcharts.common.RectangleInsets; import net.droidsolutions.droidcharts.core.LegendItem; import net.droidsolutions.droidcharts.core.LegendItemCollection; import net.droidsolutions.droidcharts.core.axis.CategoryAxis; import net.droidsolutions.droidcharts.core.axis.ValueAxis; import net.droidsolutions.droidcharts.core.data.CategoryDataset; import net.droidsolutions.droidcharts.core.data.Range; import net.droidsolutions.droidcharts.core.data.general.DatasetUtilities; import net.droidsolutions.droidcharts.core.entity.CategoryItemEntity; import net.droidsolutions.droidcharts.core.entity.EntityCollection; import net.droidsolutions.droidcharts.core.event.RendererChangeEvent; import net.droidsolutions.droidcharts.core.label.CategoryItemLabelGenerator; import net.droidsolutions.droidcharts.core.label.CategorySeriesLabelGenerator; import net.droidsolutions.droidcharts.core.label.ItemLabelPosition; import net.droidsolutions.droidcharts.core.label.StandardCategorySeriesLabelGenerator; import net.droidsolutions.droidcharts.core.plot.CategoryCrosshairState; import net.droidsolutions.droidcharts.core.plot.CategoryMarker; import net.droidsolutions.droidcharts.core.plot.CategoryPlot; import net.droidsolutions.droidcharts.core.plot.DrawingSupplier; import net.droidsolutions.droidcharts.core.plot.IntervalMarker; import net.droidsolutions.droidcharts.core.plot.Marker; import net.droidsolutions.droidcharts.core.plot.PlotOrientation; import net.droidsolutions.droidcharts.core.plot.PlotRenderingInfo; import net.droidsolutions.droidcharts.core.plot.ValueMarker; import net.droidsolutions.droidcharts.core.text.TextUtilities; import android.graphics.Canvas; import android.graphics.Paint; /*import org.jfree.chart.LegendItem; import org.jfree.chart.LegendItemCollection; import org.jfree.chart.axis.CategoryAxis; import org.jfree.chart.axis.ValueAxis; import org.jfree.chart.entity.CategoryItemEntity; import org.jfree.chart.entity.EntityCollection; import org.jfree.chart.event.RendererChangeEvent; import org.jfree.chart.labels.CategoryItemLabelGenerator; import org.jfree.chart.labels.CategorySeriesLabelGenerator; import org.jfree.chart.labels.CategoryToolTipGenerator; import org.jfree.chart.labels.ItemLabelPosition; import org.jfree.chart.labels.StandardCategorySeriesLabelGenerator; import org.jfree.chart.plot.CategoryCrosshairState; import org.jfree.chart.plot.CategoryMarker; import org.jfree.chart.plot.CategoryPlot; import org.jfree.chart.plot.DrawingSupplier; import org.jfree.chart.plot.IntervalMarker; import org.jfree.chart.plot.Marker; import org.jfree.chart.plot.PlotOrientation; import org.jfree.chart.plot.PlotRenderingInfo; import org.jfree.chart.plot.ValueMarker; import org.jfree.chart.renderer.AbstractRenderer; import org.jfree.chart.urls.CategoryURLGenerator; import org.jfree.data.Range; import org.jfree.data.category.CategoryDataset; import org.jfree.data.general.DatasetUtilities; import org.jfree.text.TextUtilities; import org.jfree.ui.GradientPaintTransformer; import org.jfree.ui.LengthAdjustmentType; import org.jfree.ui.RectangleAnchor; import org.jfree.ui.RectangleEdge; import org.jfree.ui.RectangleInsets; import org.jfree.util.ObjectList; import org.jfree.util.ObjectUtilities; import org.jfree.util.PublicCloneable; */ /** * An abstract base class that you can use to implement a new * {@link CategoryItemRenderer}. When you create a new * {@link CategoryItemRenderer} you are not required to extend this class, but * it makes the job easier. */ public abstract class AbstractCategoryItemRenderer extends AbstractRenderer implements CategoryItemRenderer, Cloneable, Serializable { /** For serialization. */ private static final long serialVersionUID = 1247553218442497391L; /** The plot that the renderer is assigned to. */ private CategoryPlot plot; /** A list of item label generators (one per series). */ private ObjectList itemLabelGeneratorList; /** The base item label generator. */ private CategoryItemLabelGenerator baseItemLabelGenerator; /** A list of tool tip generators (one per series). */ private ObjectList toolTipGeneratorList; /** A list of item label generators (one per series). */ private ObjectList itemURLGeneratorList; /** The legend item label generator. */ private CategorySeriesLabelGenerator legendItemLabelGenerator; /** The legend item tool tip generator. */ private CategorySeriesLabelGenerator legendItemToolTipGenerator; /** The legend item URL generator. */ private CategorySeriesLabelGenerator legendItemURLGenerator; /** The number of rows in the dataset (temporary record). */ private transient int rowCount; /** The number of columns in the dataset (temporary record). */ private transient int columnCount; /** * Creates a new renderer with no tool tip generator and no URL generator. * The defaults (no tool tip or URL generators) have been chosen to minimise * the processing required to generate a default chart. If you require tool * tips or URLs, then you can easily add the required generators. */ protected AbstractCategoryItemRenderer() { this.itemLabelGenerator = null; this.itemLabelGeneratorList = new ObjectList(); this.toolTipGeneratorList = new ObjectList(); this.itemURLGeneratorList = new ObjectList(); this.legendItemLabelGenerator = new StandardCategorySeriesLabelGenerator(); } /** * Returns the number of passes through the dataset required by the * renderer. This method returns <code>1</code>, subclasses should override * if they need more passes. * * @return The pass count. */ public int getPassCount() { return 1; } /** * Returns the plot that the renderer has been assigned to (where * <code>null</code> indicates that the renderer is not currently assigned * to a plot). * * @return The plot (possibly <code>null</code>). * * @see #setPlot(CategoryPlot) */ public CategoryPlot getPlot() { return this.plot; } /** * Sets the plot that the renderer has been assigned to. This method is * usually called by the {@link CategoryPlot}, in normal usage you shouldn't * need to call this method directly. * * @param plot * the plot (<code>null</code> not permitted). * * @see #getPlot() */ public void setPlot(CategoryPlot plot) { if (plot == null) { throw new IllegalArgumentException("Null 'plot' argument."); } this.plot = plot; } // ITEM LABEL GENERATOR /** * Returns the item label generator for a data item. This implementation * simply passes control to the {@link #getSeriesItemLabelGenerator(int)} * method. If, for some reason, you want a different generator for * individual items, you can override this method. * * @param row * the row index (zero based). * @param column * the column index (zero based). * * @return The generator (possibly <code>null</code>). */ public CategoryItemLabelGenerator getItemLabelGenerator(int row, int column) { return getSeriesItemLabelGenerator(row); } /** * Returns the item label generator for a series. * * @param series * the series index (zero based). * * @return The generator (possibly <code>null</code>). * * @see #setSeriesItemLabelGenerator(int, CategoryItemLabelGenerator) */ public CategoryItemLabelGenerator getSeriesItemLabelGenerator(int series) { // return the generator for ALL series, if there is one... if (this.itemLabelGenerator != null) { return this.itemLabelGenerator; } // otherwise look up the generator table CategoryItemLabelGenerator generator = (CategoryItemLabelGenerator) this.itemLabelGeneratorList.get(series); if (generator == null) { generator = this.baseItemLabelGenerator; } return generator; } /** * Sets the item label generator for a series and sends a * {@link RendererChangeEvent} to all registered listeners. * * @param series * the series index (zero based). * @param generator * the generator (<code>null</code> permitted). * * @see #getSeriesItemLabelGenerator(int) */ public void setSeriesItemLabelGenerator(int series, CategoryItemLabelGenerator generator) { this.itemLabelGeneratorList.set(series, generator); } /** * Returns the base item label generator. * * @return The generator (possibly <code>null</code>). * * @see #setBaseItemLabelGenerator(CategoryItemLabelGenerator) */ public CategoryItemLabelGenerator getBaseItemLabelGenerator() { return this.baseItemLabelGenerator; } /** * Sets the base item label generator and sends a * {@link RendererChangeEvent} to all registered listeners. * * @param generator * the generator (<code>null</code> permitted). * * @see #getBaseItemLabelGenerator() */ public void setBaseItemLabelGenerator(CategoryItemLabelGenerator generator) { this.baseItemLabelGenerator = generator; } // TOOL TIP GENERATOR /** * Returns the number of rows in the dataset. This value is updated in the * {@link AbstractCategoryItemRenderer#initialise} method. * * @return The row count. */ public int getRowCount() { return this.rowCount; } /** * Returns the number of columns in the dataset. This value is updated in * the {@link AbstractCategoryItemRenderer#initialise} method. * * @return The column count. */ public int getColumnCount() { return this.columnCount; } /** * Creates a new state instance---this method is called from the * {@link #initialise(Graphics2D, Rectangle2D, CategoryPlot, int, PlotRenderingInfo)} * method. Subclasses can override this method if they need to use a * subclass of {@link CategoryItemRendererState}. * * @param info * collects plot rendering info (<code>null</code> permitted). * * @return The new state instance (never <code>null</code>). * * @since 1.0.5 */ protected CategoryItemRendererState createState(PlotRenderingInfo info) { return new CategoryItemRendererState(info); } /** * Initialises the renderer and returns a state object that will be used for * the remainder of the drawing process for a single chart. The state object * allows for the fact that the renderer may be used simultaneously by * multiple threads (each thread will work with a separate state object). * * @param g2 * the graphics device. * @param dataArea * the data area. * @param plot * the plot. * @param rendererIndex * the renderer index. * @param info * an object for returning information about the structure of the * plot (<code>null</code> permitted). * * @return The renderer state. */ public CategoryItemRendererState initialise(Canvas g2, Rectangle2D dataArea, CategoryPlot plot, int rendererIndex, PlotRenderingInfo info) { setPlot(plot); CategoryDataset data = plot.getDataset(rendererIndex); if (data != null) { this.rowCount = data.getRowCount(); this.columnCount = data.getColumnCount(); } else { this.rowCount = 0; this.columnCount = 0; } CategoryItemRendererState state = createState(info); int[] visibleSeriesTemp = new int[this.rowCount]; int visibleSeriesCount = 0; for (int row = 0; row < this.rowCount; row++) { if (isSeriesVisible(row)) { visibleSeriesTemp[visibleSeriesCount] = row; visibleSeriesCount++; } } int[] visibleSeries = new int[visibleSeriesCount]; System.arraycopy(visibleSeriesTemp, 0, visibleSeries, 0, visibleSeriesCount); state.setVisibleSeriesArray(visibleSeries); return state; } /** * Returns the range of values the renderer requires to display all the * items from the specified dataset. * * @param dataset * the dataset (<code>null</code> permitted). * * @return The range (or <code>null</code> if the dataset is * <code>null</code> or empty). */ public Range findRangeBounds(CategoryDataset dataset) { return findRangeBounds(dataset, false); } /** * Returns the range of values the renderer requires to display all the * items from the specified dataset. * * @param dataset * the dataset (<code>null</code> permitted). * @param includeInterval * include the y-interval if the dataset has one. * * @return The range (<code>null</code> if the dataset is <code>null</code> * or empty). * * @since 1.0.13 */ protected Range findRangeBounds(CategoryDataset dataset, boolean includeInterval) { if (dataset == null) { return null; } if (getDataBoundsIncludesVisibleSeriesOnly()) { List visibleSeriesKeys = new ArrayList(); int seriesCount = dataset.getRowCount(); for (int s = 0; s < seriesCount; s++) { if (isSeriesVisible(s)) { visibleSeriesKeys.add(dataset.getRowKey(s)); } } return DatasetUtilities.findRangeBounds(dataset, visibleSeriesKeys, includeInterval); } else { return DatasetUtilities.findRangeBounds(dataset, includeInterval); } } /** * Returns the Java2D coordinate for the middle of the specified data item. * * @param rowKey * the row key. * @param columnKey * the column key. * @param dataset * the dataset. * @param axis * the axis. * @param area * the data area. * @param edge * the edge along which the axis lies. * * @return The Java2D coordinate for the middle of the item. * * @since 1.0.11 */ public double getItemMiddle(Comparable rowKey, Comparable columnKey, CategoryDataset dataset, CategoryAxis axis, Rectangle2D area, RectangleEdge edge) { return axis.getCategoryMiddle(columnKey, dataset.getColumnKeys(), area, edge); } /** * Draws a background for the data area. The default implementation just * gets the plot to draw the background, but some renderers will override * this behaviour. * * @param g2 * the graphics device. * @param plot * the plot. * @param dataArea * the data area. */ public void drawBackground(Canvas g2, CategoryPlot plot, Rectangle2D dataArea) { plot.drawBackground(g2, dataArea); } /** * Draws an outline for the data area. The default implementation just gets * the plot to draw the outline, but some renderers will override this * behaviour. * * @param g2 * the graphics device. * @param plot * the plot. * @param dataArea * the data area. */ public void drawOutline(Canvas g2, CategoryPlot plot, Rectangle2D dataArea) { plot.drawOutline(g2, dataArea); } /** * Draws a grid line against the domain axis. * <P> * Note that this default implementation assumes that the horizontal axis is * the domain axis. If this is not the case, you will need to override this * method. * * @param g2 * the graphics device. * @param plot * the plot. * @param dataArea * the area for plotting data (not yet adjusted for any 3D * effect). * @param value * the Java2D value at which the grid line should be drawn. * * @see #drawRangeGridline(Graphics2D, CategoryPlot, ValueAxis, Rectangle2D, * double) */ public void drawDomainGridline(Canvas g2, CategoryPlot plot, Rectangle2D dataArea, double value) { Line2D line = null; PlotOrientation orientation = plot.getOrientation(); if (orientation == PlotOrientation.HORIZONTAL) { line = new Line2D.Double(dataArea.getMinX(), value, dataArea.getMaxX(), value); } else if (orientation == PlotOrientation.VERTICAL) { line = new Line2D.Double(value, dataArea.getMinY(), value, dataArea.getMaxY()); } Paint paint = plot.getDomainGridlinePaint(); if (paint == null) { paint = CategoryPlot.DEFAULT_GRIDLINE_PAINT; } float stroke = plot.getDomainGridlineStroke(); paint.setStrokeWidth(stroke); g2.drawLine((float) line.getX1(), (float) line.getY1(), (float) line.getX2(), (float) line.getY2(), paint); } /** * Draws a grid line against the range axis. * * @param g2 * the graphics device. * @param plot * the plot. * @param axis * the value axis. * @param dataArea * the area for plotting data (not yet adjusted for any 3D * effect). * @param value * the value at which the grid line should be drawn. * * @see #drawDomainGridline(Graphics2D, CategoryPlot, Rectangle2D, double) */ public void drawRangeGridline(Canvas g2, CategoryPlot plot, ValueAxis axis, Rectangle2D dataArea, double value) { Range range = axis.getRange(); if (!range.contains(value)) { return; } PlotOrientation orientation = plot.getOrientation(); double v = axis.valueToJava2D(value, dataArea, plot.getRangeAxisEdge()); Line2D line = null; if (orientation == PlotOrientation.HORIZONTAL) { line = new Line2D.Double(v, dataArea.getMinY(), v, dataArea.getMaxY()); } else if (orientation == PlotOrientation.VERTICAL) { line = new Line2D.Double(dataArea.getMinX(), v, dataArea.getMaxX(), v); } Paint paint = plot.getRangeGridlinePaint(); if (paint == null) { paint = CategoryPlot.DEFAULT_GRIDLINE_PAINT; } float stroke = plot.getRangeGridlineStroke(); paint.setStrokeWidth(stroke); g2.drawLine((float) line.getX1(), (float) line.getY1(), (float) line.getX2(), (float) line.getY2(), paint); } /** * Draws a line perpendicular to the range axis. * * @param g2 * the graphics device. * @param plot * the plot. * @param axis * the value axis. * @param dataArea * the area for plotting data (not yet adjusted for any 3D * effect). * @param value * the value at which the grid line should be drawn. * @param paint * the paint (<code>null</code> not permitted). * @param stroke * the stroke (<code>null</code> not permitted). * * @see #drawRangeGridline * * @since 1.0.13 */ public void drawRangeLine(Canvas g2, CategoryPlot plot, ValueAxis axis, Rectangle2D dataArea, double value, Paint paint, float stroke) { // TODO: In JFreeChart 1.2.0, put this method in the // CategoryItemRenderer interface Range range = axis.getRange(); if (!range.contains(value)) { return; } PlotOrientation orientation = plot.getOrientation(); Line2D line = null; double v = axis.valueToJava2D(value, dataArea, plot.getRangeAxisEdge()); if (orientation == PlotOrientation.HORIZONTAL) { line = new Line2D.Double(v, dataArea.getMinY(), v, dataArea.getMaxY()); } else if (orientation == PlotOrientation.VERTICAL) { line = new Line2D.Double(dataArea.getMinX(), v, dataArea.getMaxX(), v); } paint.setStrokeWidth(stroke); g2.drawLine((float) line.getX1(), (float) line.getY1(), (float) line.getX2(), (float) line.getY2(), paint); } /** * Draws a marker for the domain axis. * * @param g2 * the graphics device (not <code>null</code>). * @param plot * the plot (not <code>null</code>). * @param axis * the range axis (not <code>null</code>). * @param marker * the marker to be drawn (not <code>null</code>). * @param dataArea * the area inside the axes (not <code>null</code>). * * @see #drawRangeMarker(Graphics2D, CategoryPlot, ValueAxis, Marker, * Rectangle2D) */ public void drawDomainMarker(Canvas g2, CategoryPlot plot, CategoryAxis axis, CategoryMarker marker, Rectangle2D dataArea) { Comparable category = marker.getKey(); CategoryDataset dataset = plot.getDataset(plot.getIndexOf(this)); int columnIndex = dataset.getColumnIndex(category); if (columnIndex < 0) { return; } Paint paint = marker.getPaint(); paint.setAlpha(marker.getAlpha()); PlotOrientation orientation = plot.getOrientation(); Rectangle2D bounds = null; if (marker.getDrawAsLine()) { double v = axis.getCategoryMiddle(columnIndex, dataset.getColumnCount(), dataArea, plot.getDomainAxisEdge()); Line2D line = null; if (orientation == PlotOrientation.HORIZONTAL) { line = new Line2D.Double(dataArea.getMinX(), v, dataArea.getMaxX(), v); } else if (orientation == PlotOrientation.VERTICAL) { line = new Line2D.Double(v, dataArea.getMinY(), v, dataArea.getMaxY()); } paint.setStrokeWidth(marker.getStroke()); g2.drawLine((float) line.getX1(), (float) line.getY1(), (float) line.getX2(), (float) line.getY2(), paint); bounds = line.getBounds2D(); } else { double v0 = axis.getCategoryStart(columnIndex, dataset.getColumnCount(), dataArea, plot.getDomainAxisEdge()); double v1 = axis.getCategoryEnd(columnIndex, dataset.getColumnCount(), dataArea, plot.getDomainAxisEdge()); Rectangle2D area = null; if (orientation == PlotOrientation.HORIZONTAL) { area = new Rectangle2D.Double(dataArea.getMinX(), v0, dataArea.getWidth(), (v1 - v0)); } else if (orientation == PlotOrientation.VERTICAL) { area = new Rectangle2D.Double(v0, dataArea.getMinY(), (v1 - v0), dataArea.getHeight()); } Paint p = marker.getPaint(); p.setStyle(Paint.Style.FILL); g2.drawRect((float) area.getMinX(), (float) area.getMinY(), (float) area.getMaxX(), (float) area.getMaxY(), p); bounds = area; } String label = marker.getLabel(); RectangleAnchor anchor = marker.getLabelAnchor(); if (label != null) { Font labelFont = marker.getLabelFont(); // g2.setFont(labelFont); // g2.setPaint(marker.getLabelPaint()); Point2D coordinates = calculateDomainMarkerTextAnchorPoint(g2, orientation, dataArea, bounds, marker.getLabelOffset(), marker.getLabelOffsetType(), anchor); TextUtilities.drawAlignedString(label, g2, (float) coordinates.getX(), (float) coordinates.getY(), marker.getLabelTextAnchor(), marker.getLabelPaint()); } // g2.setComposite(savedComposite); } /** * Draws a marker for the range axis. * * @param g2 * the graphics device (not <code>null</code>). * @param plot * the plot (not <code>null</code>). * @param axis * the range axis (not <code>null</code>). * @param marker * the marker to be drawn (not <code>null</code>). * @param dataArea * the area inside the axes (not <code>null</code>). * * @see #drawDomainMarker(Graphics2D, CategoryPlot, CategoryAxis, * CategoryMarker, Rectangle2D) */ public void drawRangeMarker(Canvas g2, CategoryPlot plot, ValueAxis axis, Marker marker, Rectangle2D dataArea) { if (marker instanceof ValueMarker) { ValueMarker vm = (ValueMarker) marker; double value = vm.getValue(); Range range = axis.getRange(); if (!range.contains(value)) { return; } PlotOrientation orientation = plot.getOrientation(); double v = axis.valueToJava2D(value, dataArea, plot.getRangeAxisEdge()); Line2D line = null; if (orientation == PlotOrientation.HORIZONTAL) { line = new Line2D.Double(v, dataArea.getMinY(), v, dataArea.getMaxY()); } else if (orientation == PlotOrientation.VERTICAL) { line = new Line2D.Double(dataArea.getMinX(), v, dataArea.getMaxX(), v); } Paint p = marker.getPaint(); p.setAlpha(vm.getAlpha()); p.setStrokeWidth(marker.getStroke()); g2.drawLine((float) line.getX1(), (float) line.getY1(), (float) line.getX2(), (float) line.getY2(), p); String label = marker.getLabel(); RectangleAnchor anchor = marker.getLabelAnchor(); if (label != null) { Font labelFont = marker.getLabelFont(); // g2.setFont(labelFont); Point2D coordinates = calculateRangeMarkerTextAnchorPoint(g2, orientation, dataArea, line.getBounds2D(), marker.getLabelOffset(), LengthAdjustmentType.EXPAND, anchor); TextUtilities.drawAlignedString(label, g2, (float) coordinates.getX(), (float) coordinates.getY(), marker.getLabelTextAnchor(), marker.getLabelPaint()); } // g2.setComposite(savedComposite); p.setAlpha(255); } else if (marker instanceof IntervalMarker) { IntervalMarker im = (IntervalMarker) marker; double start = im.getStartValue(); double end = im.getEndValue(); Range range = axis.getRange(); if (!(range.intersects(start, end))) { return; } double start2d = axis.valueToJava2D(start, dataArea, plot.getRangeAxisEdge()); double end2d = axis.valueToJava2D(end, dataArea, plot.getRangeAxisEdge()); double low = Math.min(start2d, end2d); double high = Math.max(start2d, end2d); PlotOrientation orientation = plot.getOrientation(); Rectangle2D rect = null; if (orientation == PlotOrientation.HORIZONTAL) { // clip left and right bounds to data area low = Math.max(low, dataArea.getMinX()); high = Math.min(high, dataArea.getMaxX()); rect = new Rectangle2D.Double(low, dataArea.getMinY(), high - low, dataArea.getHeight()); } else if (orientation == PlotOrientation.VERTICAL) { // clip top and bottom bounds to data area low = Math.max(low, dataArea.getMinY()); high = Math.min(high, dataArea.getMaxY()); rect = new Rectangle2D.Double(dataArea.getMinX(), low, dataArea.getWidth(), high - low); } Paint p = marker.getPaint(); p.setAlpha((int) marker.getAlpha() * 100);// TODO ALPHA p.setStyle(Paint.Style.FILL); g2.drawRect((float) rect.getMinX(), (float) rect.getMinY(), (float) rect.getMaxX(), (float) rect.getMinY(), p); // now draw the outlines, if visible... if (im.getOutlinePaint() != null && im.getOutlineStroke() != 0.0f) { if (orientation == PlotOrientation.VERTICAL) { Line2D line = new Line2D.Double(); double x0 = dataArea.getMinX(); double x1 = dataArea.getMaxX(); Paint paint = im.getOutlinePaint(); paint.setStrokeWidth(im.getOutlineStroke()); if (range.contains(start)) { line.setLine(x0, start2d, x1, start2d); g2.drawLine((float) line.getX1(), (float) line.getY1(), (float) line.getX2(), (float) line.getY2(), paint); } if (range.contains(end)) { line.setLine(x0, end2d, x1, end2d); g2.drawLine((float) line.getX1(), (float) line.getY1(), (float) line.getX2(), (float) line.getY2(), paint); } } else { // PlotOrientation.HORIZONTAL Line2D line = new Line2D.Double(); double y0 = dataArea.getMinY(); double y1 = dataArea.getMaxY(); Paint paint = im.getOutlinePaint(); paint.setStrokeWidth(im.getOutlineStroke()); if (range.contains(start)) { line.setLine(start2d, y0, start2d, y1); g2.drawLine((float) line.getX1(), (float) line.getY1(), (float) line.getX2(), (float) line.getY2(), paint); } if (range.contains(end)) { line.setLine(end2d, y0, end2d, y1); g2.drawLine((float) line.getX1(), (float) line.getY1(), (float) line.getX2(), (float) line.getY2(), paint); } } } String label = marker.getLabel(); RectangleAnchor anchor = marker.getLabelAnchor(); if (label != null) { Font labelFont = marker.getLabelFont(); // g2.setFont(labelFont); Paint pp = marker.getLabelPaint(); // g2.setPaint(marker.getLabelPaint()); Point2D coordinates = calculateRangeMarkerTextAnchorPoint(g2, orientation, dataArea, rect, marker.getLabelOffset(), marker.getLabelOffsetType(), anchor); TextUtilities.drawAlignedString(label, g2, (float) coordinates.getX(), (float) coordinates.getY(), marker.getLabelTextAnchor(), pp); } p.setAlpha(255); } } /** * Calculates the (x, y) coordinates for drawing the label for a marker on * the range axis. * * @param g2 * the graphics device. * @param orientation * the plot orientation. * @param dataArea * the data area. * @param markerArea * the rectangle surrounding the marker. * @param markerOffset * the marker offset. * @param labelOffsetType * the label offset type. * @param anchor * the label anchor. * * @return The coordinates for drawing the marker label. */ protected Point2D calculateDomainMarkerTextAnchorPoint(Canvas g2, PlotOrientation orientation, Rectangle2D dataArea, Rectangle2D markerArea, RectangleInsets markerOffset, LengthAdjustmentType labelOffsetType, RectangleAnchor anchor) { Rectangle2D anchorRect = null; if (orientation == PlotOrientation.HORIZONTAL) { anchorRect = markerOffset.createAdjustedRectangle(markerArea, LengthAdjustmentType.CONTRACT, labelOffsetType); } else if (orientation == PlotOrientation.VERTICAL) { anchorRect = markerOffset.createAdjustedRectangle(markerArea, labelOffsetType, LengthAdjustmentType.CONTRACT); } return RectangleAnchor.coordinates(anchorRect, anchor); } /** * Calculates the (x, y) coordinates for drawing a marker label. * * @param g2 * the graphics device. * @param orientation * the plot orientation. * @param dataArea * the data area. * @param markerArea * the rectangle surrounding the marker. * @param markerOffset * the marker offset. * @param labelOffsetType * the label offset type. * @param anchor * the label anchor. * * @return The coordinates for drawing the marker label. */ protected Point2D calculateRangeMarkerTextAnchorPoint(Canvas g2, PlotOrientation orientation, Rectangle2D dataArea, Rectangle2D markerArea, RectangleInsets markerOffset, LengthAdjustmentType labelOffsetType, RectangleAnchor anchor) { Rectangle2D anchorRect = null; if (orientation == PlotOrientation.HORIZONTAL) { anchorRect = markerOffset.createAdjustedRectangle(markerArea, labelOffsetType, LengthAdjustmentType.CONTRACT); } else if (orientation == PlotOrientation.VERTICAL) { anchorRect = markerOffset.createAdjustedRectangle(markerArea, LengthAdjustmentType.CONTRACT, labelOffsetType); } return RectangleAnchor.coordinates(anchorRect, anchor); } /** * Returns a legend item for a series. This default implementation will * return <code>null</code> if {@link #isSeriesVisible(int)} or * {@link #isSeriesVisibleInLegend(int)} returns <code>false</code>. * * @param datasetIndex * the dataset index (zero-based). * @param series * the series index (zero-based). * * @return The legend item (possibly <code>null</code>). * * @see #getLegendItems() */ public LegendItem getLegendItem(int datasetIndex, int series) { CategoryPlot p = getPlot(); if (p == null) { return null; } // check that a legend item needs to be displayed... if (!isSeriesVisible(series) || !isSeriesVisibleInLegend(series)) { return null; } CategoryDataset dataset = p.getDataset(datasetIndex); String label = this.legendItemLabelGenerator.generateLabel(dataset, series); String description = label; String toolTipText = null; if (this.legendItemToolTipGenerator != null) { toolTipText = this.legendItemToolTipGenerator.generateLabel(dataset, series); } String urlText = null; if (this.legendItemURLGenerator != null) { urlText = this.legendItemURLGenerator.generateLabel(dataset, series); } Shape shape = lookupLegendShape(series); Paint paint = lookupSeriesPaint(series); Paint outlinePaint = lookupSeriesOutlinePaint(series); float outlineStroke = lookupSeriesOutlineStroke(series); LegendItem item = new LegendItem(label, description, toolTipText, urlText, shape, paint.getColor(), outlineStroke, outlinePaint.getColor()); item.setLabelFont(lookupLegendTextFont(series)); Paint labelPaint = lookupLegendTextPaint(series); if (labelPaint != null) { item.setLabelPaint(labelPaint); } item.setSeriesKey(dataset.getRowKey(series)); item.setSeriesIndex(series); item.setDataset(dataset); item.setDatasetIndex(datasetIndex); return item; } /** * Returns the drawing supplier from the plot. * * @return The drawing supplier (possibly <code>null</code>). */ public DrawingSupplier getDrawingSupplier() { DrawingSupplier result = null; CategoryPlot cp = getPlot(); if (cp != null) { result = cp.getDrawingSupplier(); } return result; } /** * Considers the current (x, y) coordinate and updates the crosshair point * if it meets the criteria (usually means the (x, y) coordinate is the * closest to the anchor point so far). * * @param crosshairState * the crosshair state (<code>null</code> permitted, but the * method does nothing in that case). * @param rowKey * the row key. * @param columnKey * the column key. * @param value * the data value. * @param datasetIndex * the dataset index. * @param transX * the x-value translated to Java2D space. * @param transY * the y-value translated to Java2D space. * @param orientation * the plot orientation (<code>null</code> not permitted). * * @since 1.0.11 */ protected void updateCrosshairValues(CategoryCrosshairState crosshairState, Comparable rowKey, Comparable columnKey, double value, int datasetIndex, double transX, double transY, PlotOrientation orientation) { if (orientation == null) { throw new IllegalArgumentException("Null 'orientation' argument."); } if (crosshairState != null) { if (this.plot.isRangeCrosshairLockedOnData()) { // both axes crosshairState.updateCrosshairPoint(rowKey, columnKey, value, datasetIndex, transX, transY, orientation); } else { crosshairState.updateCrosshairX(rowKey, columnKey, datasetIndex, transX, orientation); } } } /** * Draws an item label. * * @param g2 * the graphics device. * @param orientation * the orientation. * @param dataset * the dataset. * @param row * the row. * @param column * the column. * @param x * the x coordinate (in Java2D space). * @param y * the y coordinate (in Java2D space). * @param negative * indicates a negative value (which affects the item label * position). */ protected void drawItemLabel(Canvas g2, PlotOrientation orientation, CategoryDataset dataset, int row, int column, double x, double y, boolean negative) { CategoryItemLabelGenerator generator = getItemLabelGenerator(row, column); if (generator != null) { Font labelFont = getItemLabelFont(row, column); Paint paint = getItemLabelPaint(row, column); // g2.setFont(labelFont); // g2.setPaint(paint); String label = generator.generateLabel(dataset, row, column); ItemLabelPosition position = null; if (!negative) { position = getPositiveItemLabelPosition(row, column); } else { position = getNegativeItemLabelPosition(row, column); } Point2D anchorPoint = calculateLabelAnchorPoint(position.getItemLabelAnchor(), x, y, orientation); TextUtilities.drawRotatedString(label, g2, (float) anchorPoint.getX(), (float) anchorPoint.getY(), position.getTextAnchor(), position.getAngle(), position.getRotationAnchor(), paint); } } /** * Returns a domain axis for a plot. * * @param plot * the plot. * @param index * the axis index. * * @return A domain axis. */ protected CategoryAxis getDomainAxis(CategoryPlot plot, int index) { CategoryAxis result = plot.getDomainAxis(index); if (result == null) { result = plot.getDomainAxis(); } return result; } /** * Returns a range axis for a plot. * * @param plot * the plot. * @param index * the axis index. * * @return A range axis. */ protected ValueAxis getRangeAxis(CategoryPlot plot, int index) { ValueAxis result = plot.getRangeAxis(index); if (result == null) { result = plot.getRangeAxis(); } return result; } /** * Returns a (possibly empty) collection of legend items for the series that * this renderer is responsible for drawing. * * @return The legend item collection (never <code>null</code>). * * @see #getLegendItem(int, int) */ public LegendItemCollection getLegendItems() { if (this.plot == null) { return new LegendItemCollection(); } LegendItemCollection result = new LegendItemCollection(); int index = this.plot.getIndexOf(this); CategoryDataset dataset = this.plot.getDataset(index); if (dataset != null) { int seriesCount = dataset.getRowCount(); for (int i = 0; i < seriesCount; i++) { if (isSeriesVisibleInLegend(i)) { LegendItem item = getLegendItem(index, i); if (item != null) { result.add(item); } } } } return result; } /** * Returns the legend item label generator. * * @return The label generator (never <code>null</code>). * * @see #setLegendItemLabelGenerator(CategorySeriesLabelGenerator) */ public CategorySeriesLabelGenerator getLegendItemLabelGenerator() { return this.legendItemLabelGenerator; } /** * Sets the legend item label generator and sends a * {@link RendererChangeEvent} to all registered listeners. * * @param generator * the generator (<code>null</code> not permitted). * * @see #getLegendItemLabelGenerator() */ public void setLegendItemLabelGenerator(CategorySeriesLabelGenerator generator) { if (generator == null) { throw new IllegalArgumentException("Null 'generator' argument."); } this.legendItemLabelGenerator = generator; } /** * Returns the legend item tool tip generator. * * @return The tool tip generator (possibly <code>null</code>). * * @see #setLegendItemToolTipGenerator(CategorySeriesLabelGenerator) */ public CategorySeriesLabelGenerator getLegendItemToolTipGenerator() { return this.legendItemToolTipGenerator; } /** * Sets the legend item tool tip generator and sends a * {@link RendererChangeEvent} to all registered listeners. * * @param generator * the generator (<code>null</code> permitted). * * @see #setLegendItemToolTipGenerator(CategorySeriesLabelGenerator) */ public void setLegendItemToolTipGenerator(CategorySeriesLabelGenerator generator) { this.legendItemToolTipGenerator = generator; } /** * Returns the legend item URL generator. * * @return The URL generator (possibly <code>null</code>). * * @see #setLegendItemURLGenerator(CategorySeriesLabelGenerator) */ public CategorySeriesLabelGenerator getLegendItemURLGenerator() { return this.legendItemURLGenerator; } /** * Sets the legend item URL generator and sends a * {@link RendererChangeEvent} to all registered listeners. * * @param generator * the generator (<code>null</code> permitted). * * @see #getLegendItemURLGenerator() */ public void setLegendItemURLGenerator(CategorySeriesLabelGenerator generator) { this.legendItemURLGenerator = generator; } /** * Adds an entity with the specified hotspot. * * @param entities * the entity collection. * @param dataset * the dataset. * @param row * the row index. * @param column * the column index. * @param hotspot * the hotspot (<code>null</code> not permitted). */ protected void addItemEntity(EntityCollection entities, CategoryDataset dataset, int row, int column, Shape hotspot) { if (hotspot == null) { throw new IllegalArgumentException("Null 'hotspot' argument."); } if (!getItemCreateEntity(row, column)) { return; } String tip = null; CategoryItemEntity entity = new CategoryItemEntity(hotspot, tip, "", dataset, dataset.getRowKey(row), dataset.getColumnKey(column)); entities.add(entity); } /** * Adds an entity to the collection. * * @param entities * the entity collection being populated. * @param hotspot * the entity area (if <code>null</code> a default will be used). * @param dataset * the dataset. * @param row * the series. * @param column * the item. * @param entityX * the entity's center x-coordinate in user space (only used if * <code>area</code> is <code>null</code>). * @param entityY * the entity's center y-coordinate in user space (only used if * <code>area</code> is <code>null</code>). * * @since 1.0.13 */ protected void addEntity(EntityCollection entities, Shape hotspot, CategoryDataset dataset, int row, int column, double entityX, double entityY) { if (!getItemCreateEntity(row, column)) { return; } Shape s = hotspot; if (hotspot == null) { double r = getDefaultEntityRadius(); double w = r * 2; if (getPlot().getOrientation() == PlotOrientation.VERTICAL) { s = new Ellipse2D.Double(entityX - r, entityY - r, w, w); } else { s = new Ellipse2D.Double(entityY - r, entityX - r, w, w); } } String tip = null; CategoryItemEntity entity = new CategoryItemEntity(s, tip, "", dataset, dataset.getRowKey(row), dataset.getColumnKey(column)); entities.add(entity); } // === DEPRECATED CODE === /** * The item label generator for ALL series. * * @deprecated This field is redundant and deprecated as of version 1.0.6. */ private CategoryItemLabelGenerator itemLabelGenerator; }