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/*
* Copyright (c) 2011, 2024, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code 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 General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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*/
package javafx.scene.chart;
import java.util.*;
import javafx.animation.*;
import javafx.application.Platform;
import javafx.beans.NamedArg;
import javafx.beans.property.DoubleProperty;
import javafx.collections.FXCollections;
import javafx.collections.ObservableList;
import javafx.geometry.Orientation;
import javafx.scene.AccessibleRole;
import javafx.scene.Node;
import javafx.scene.layout.StackPane;
import javafx.util.Duration;
import com.sun.javafx.charts.Legend.LegendItem;
import javafx.css.StyleableDoubleProperty;
import javafx.css.CssMetaData;
import javafx.css.PseudoClass;
import javafx.css.converter.SizeConverter;
import javafx.collections.ListChangeListener;
import javafx.css.Styleable;
import javafx.css.StyleableProperty;
/**
* StackedBarChart is a variation of {@link BarChart} that plots bars indicating
* data values for a category. The bars can be vertical or horizontal depending
* on which axis is a category axis.
* The bar for each series is stacked on top of the previous series.
*
* @param the X axis value type
* @param the Y axis value type
* @since JavaFX 2.1
*/
public class StackedBarChart extends XYChart {
// -------------- PRIVATE FIELDS -------------------------------------------
private Map, Map>>> seriesCategoryMap =
new HashMap<>();
private final Orientation orientation;
private CategoryAxis categoryAxis;
private ValueAxis valueAxis;
private ParallelTransition parallelTransition;
// RT-23125 handling data removal when a category is removed.
private ListChangeListener categoriesListener = new ListChangeListener<>() {
@Override public void onChanged(ListChangeListener.Change c) {
while (c.next()) {
for(String cat : c.getRemoved()) {
for (Series series : getData()) {
for (Data data : series.getData()) {
if ((cat).equals((orientation == orientation.VERTICAL) ?
data.getXValue() : data.getYValue())) {
boolean animatedOn = getAnimated();
setAnimated(false);
dataItemRemoved(data, series);
setAnimated(animatedOn);
}
}
}
requestChartLayout();
}
}
}
};
// -------------- PUBLIC PROPERTIES ----------------------------------------
/** The gap to leave between bars in separate categories */
private DoubleProperty categoryGap = new StyleableDoubleProperty(10) {
@Override protected void invalidated() {
get();
requestChartLayout();
}
@Override
public Object getBean() {
return StackedBarChart.this;
}
@Override
public String getName() {
return "categoryGap";
}
@Override
public CssMetaData,Number> getCssMetaData() {
return StackedBarChart.StyleableProperties.CATEGORY_GAP;
}
};
public double getCategoryGap() {
return categoryGap.getValue();
}
public void setCategoryGap(double value) {
categoryGap.setValue(value);
}
public DoubleProperty categoryGapProperty() {
return categoryGap;
}
// -------------- CONSTRUCTOR ----------------------------------------------
/**
* Construct a new StackedBarChart with the given axis. The two axis should be a ValueAxis/NumberAxis and a CategoryAxis,
* they can be in either order depending on if you want a horizontal or vertical bar chart.
*
* @param xAxis The x axis to use
* @param yAxis The y axis to use
*/
public StackedBarChart(@NamedArg("xAxis") Axis xAxis, @NamedArg("yAxis") Axis yAxis) {
this(xAxis, yAxis, FXCollections.>observableArrayList());
}
/**
* Construct a new StackedBarChart with the given axis and data. The two axis should be a ValueAxis/NumberAxis and a
* CategoryAxis, they can be in either order depending on if you want a horizontal or vertical bar chart.
*
* @param xAxis The x axis to use
* @param yAxis The y axis to use
* @param data The data to use, this is the actual list used so any changes to it will be reflected in the chart
*/
public StackedBarChart(@NamedArg("xAxis") Axis xAxis, @NamedArg("yAxis") Axis yAxis, @NamedArg("data") ObservableList> data) {
super(xAxis, yAxis);
getStyleClass().add("stacked-bar-chart");
if (!((xAxis instanceof ValueAxis && yAxis instanceof CategoryAxis)
|| (yAxis instanceof ValueAxis && xAxis instanceof CategoryAxis))) {
throw new IllegalArgumentException("Axis type incorrect, one of X,Y should be CategoryAxis and the other NumberAxis");
}
if (xAxis instanceof CategoryAxis) {
categoryAxis = (CategoryAxis) xAxis;
valueAxis = (ValueAxis) yAxis;
orientation = Orientation.VERTICAL;
} else {
categoryAxis = (CategoryAxis) yAxis;
valueAxis = (ValueAxis) xAxis;
orientation = Orientation.HORIZONTAL;
}
// update css
pseudoClassStateChanged(HORIZONTAL_PSEUDOCLASS_STATE, orientation == Orientation.HORIZONTAL);
pseudoClassStateChanged(VERTICAL_PSEUDOCLASS_STATE, orientation == Orientation.VERTICAL);
setData(data);
categoryAxis.getCategories().addListener(categoriesListener);
}
/**
* Construct a new StackedBarChart with the given axis and data. The two axis should be a ValueAxis/NumberAxis and a
* CategoryAxis, they can be in either order depending on if you want a horizontal or vertical bar chart.
*
* @param xAxis The x axis to use
* @param yAxis The y axis to use
* @param data The data to use, this is the actual list used so any changes to it will be reflected in the chart
* @param categoryGap The gap to leave between bars in separate categories
*/
public StackedBarChart(@NamedArg("xAxis") Axis xAxis, @NamedArg("yAxis") Axis yAxis, @NamedArg("data") ObservableList> data, @NamedArg("categoryGap") double categoryGap) {
this(xAxis, yAxis);
setData(data);
setCategoryGap(categoryGap);
}
// -------------- METHODS --------------------------------------------------
@Override protected void dataItemAdded(Series series, int itemIndex, Data item) {
String category;
if (orientation == Orientation.VERTICAL) {
category = (String) item.getXValue();
} else {
category = (String) item.getYValue();
}
// Don't plot if category does not already exist ?
// if (!categoryAxis.getCategories().contains(category)) return;
Map>> categoryMap = seriesCategoryMap.get(series);
if (categoryMap == null) {
categoryMap = new HashMap<>();
seriesCategoryMap.put(series, categoryMap);
}
// list to hold more that one bar "positive and negative"
List> itemList = categoryMap.get(category) != null ? categoryMap.get(category) : new ArrayList<>();
itemList.add(item);
categoryMap.put(category, itemList);
// categoryMap.put(category, item);
Node bar = createBar(series, getData().indexOf(series), item, itemIndex);
if (shouldAnimate()) {
animateDataAdd(item, bar);
} else {
getPlotChildren().add(bar);
}
}
@Override protected void dataItemRemoved(final Data item, final Series series) {
final Node bar = item.getNode();
if (bar != null) {
bar.focusTraversableProperty().unbind();
}
if (shouldAnimate()) {
Timeline t = createDataRemoveTimeline(item, bar, series);
t.setOnFinished(event -> {
removeDataItemFromDisplay(series, item);
});
t.play();
} else {
processDataRemove(series, item);
removeDataItemFromDisplay(series, item);
}
}
/** {@inheritDoc} */
@Override protected void dataItemChanged(Data item) {
double barVal;
double currentVal;
if (orientation == Orientation.VERTICAL) {
barVal = ((Number) item.getYValue()).doubleValue();
currentVal = ((Number) getCurrentDisplayedYValue(item)).doubleValue();
} else {
barVal = ((Number) item.getXValue()).doubleValue();
currentVal = ((Number) getCurrentDisplayedXValue(item)).doubleValue();
}
if (currentVal > 0 && barVal < 0) { // going from positive to negative
// add style class negative
item.getNode().getStyleClass().add("negative");
} else if (currentVal < 0 && barVal > 0) { // going from negative to positive
// remove style class negative
item.getNode().getStyleClass().remove("negative");
}
}
@Override protected void seriesChanged(ListChangeListener.Change c) {
// Update style classes for all series lines and symbols
// Note: is there a more efficient way of doing this?
for (int i = 0; i < getDataSize(); i++) {
final Series series = getData().get(i);
for (int j=0; j item = series.getData().get(j);
Node bar = item.getNode();
bar.getStyleClass().setAll("chart-bar", "series" + i, "data" + j, series.defaultColorStyleClass);
}
}
}
/** {@inheritDoc} */
@Override protected void seriesAdded(Series series, int seriesIndex) {
// handle any data already in series
// create entry in the map
Map>> categoryMap = new HashMap<>();
for (int j = 0; j < series.getData().size(); j++) {
Data item = series.getData().get(j);
Node bar = createBar(series, seriesIndex, item, j);
String category;
if (orientation == Orientation.VERTICAL) {
category = (String) item.getXValue();
} else {
category = (String) item.getYValue();
}
// list of two item positive and negative
List> itemList = categoryMap.get(category) != null ? categoryMap.get(category) : new ArrayList<>();
itemList.add(item);
categoryMap.put(category, itemList);
if (shouldAnimate()) {
animateDataAdd(item, bar);
} else {
double barVal = (orientation == Orientation.VERTICAL) ? ((Number)item.getYValue()).doubleValue() :
((Number)item.getXValue()).doubleValue();
if (barVal < 0) {
bar.getStyleClass().add("negative");
}
getPlotChildren().add(bar);
}
}
if (categoryMap.size() > 0) {
seriesCategoryMap.put(series, categoryMap);
}
}
@Override protected void seriesRemoved(final Series series) {
// remove all symbol nodes
if (shouldAnimate()) {
parallelTransition = new ParallelTransition();
parallelTransition.setOnFinished(event -> {
removeSeriesFromDisplay(series);
requestChartLayout();
});
for (Data d : series.getData()) {
final Node bar = d.getNode();
// Animate series deletion
if (getSeriesSize() > 1) {
Timeline t = createDataRemoveTimeline(d, bar, series);
parallelTransition.getChildren().add(t);
} else {
// fade out last series
FadeTransition ft = new FadeTransition(Duration.millis(700), bar);
ft.setFromValue(1);
ft.setToValue(0);
ft.setOnFinished(actionEvent -> {
processDataRemove(series, d);
bar.setOpacity(1.0);
});
parallelTransition.getChildren().add(ft);
}
}
parallelTransition.play();
} else {
for (Data d : series.getData()) {
processDataRemove(series, d);
}
removeSeriesFromDisplay(series);
requestChartLayout();
}
}
/** {@inheritDoc} */
@Override protected void updateAxisRange() {
// This override is necessary to update axis range based on cumulative Y value for the
// Y axis instead of the inherited way where the max value in the data range is used.
boolean categoryIsX = categoryAxis == getXAxis();
if (categoryAxis.isAutoRanging()) {
List cData = new ArrayList();
for (Series series : getData()) {
for (Data data : series.getData()) {
if (data != null) cData.add(categoryIsX ? data.getXValue() : data.getYValue());
}
}
categoryAxis.invalidateRange(cData);
}
if (valueAxis.isAutoRanging()) {
List vData = new ArrayList<>();
for (String category : categoryAxis.getAllDataCategories()) {
double totalXN = 0;
double totalXP = 0;
Iterator> seriesIterator = getDisplayedSeriesIterator();
while (seriesIterator.hasNext()) {
Series series = seriesIterator.next();
for (final Data item : getDataItem(series, category)) {
if (item != null) {
boolean isNegative = item.getNode().getStyleClass().contains("negative");
Number value = (Number) (categoryIsX ? item.getYValue() : item.getXValue());
if (!isNegative) {
totalXP += valueAxis.toNumericValue(value);
} else {
totalXN += valueAxis.toNumericValue(value);
}
}
}
}
vData.add(totalXP);
vData.add(totalXN);
}
valueAxis.invalidateRange(vData);
}
}
/** {@inheritDoc} */
@Override protected void layoutPlotChildren() {
double catSpace = categoryAxis.getCategorySpacing();
// calculate bar spacing
final double availableBarSpace = catSpace - getCategoryGap();
final double barWidth = availableBarSpace;
final double barOffset = -((catSpace - getCategoryGap()) / 2);
// update bar positions and sizes
for (String category : categoryAxis.getCategories()) {
double currentPositiveValue = 0;
double currentNegativeValue = 0;
Iterator> seriesIterator = getDisplayedSeriesIterator();
while (seriesIterator.hasNext()) {
Series series = seriesIterator.next();
for (final Data item : getDataItem(series, category)) {
if (item != null) {
final Node bar = item.getNode();
final double categoryPos;
final double valNumber;
final X xValue = getCurrentDisplayedXValue(item);
final Y yValue = getCurrentDisplayedYValue(item);
if (orientation == Orientation.VERTICAL) {
categoryPos = getXAxis().getDisplayPosition(xValue);
valNumber = getYAxis().toNumericValue(yValue);
} else {
categoryPos = getYAxis().getDisplayPosition(yValue);
valNumber = getXAxis().toNumericValue(xValue);
}
double bottom;
double top;
boolean isNegative = bar.getStyleClass().contains("negative");
if (!isNegative) {
bottom = valueAxis.getDisplayPosition(currentPositiveValue);
top = valueAxis.getDisplayPosition(currentPositiveValue + valNumber);
currentPositiveValue += valNumber;
} else {
bottom = valueAxis.getDisplayPosition(currentNegativeValue + valNumber);
top = valueAxis.getDisplayPosition(currentNegativeValue);
currentNegativeValue += valNumber;
}
if (orientation == Orientation.VERTICAL) {
bar.resizeRelocate(categoryPos + barOffset,
top, barWidth, bottom - top);
} else {
bar.resizeRelocate(bottom,
categoryPos + barOffset,
top - bottom, barWidth);
}
}
}
}
}
}
@Override
LegendItem createLegendItemForSeries(Series series, int seriesIndex) {
LegendItem legendItem = new LegendItem(series.getName());
legendItem.getSymbol().getStyleClass().addAll("chart-bar", "series" + seriesIndex,
"bar-legend-symbol", series.defaultColorStyleClass);
return legendItem;
}
private void updateMap(Series series, Data item) {
final String category = (orientation == Orientation.VERTICAL) ? (String)item.getXValue() :
(String)item.getYValue();
Map>> categoryMap = seriesCategoryMap.get(series);
if (categoryMap != null) {
categoryMap.remove(category);
if (categoryMap.isEmpty()) seriesCategoryMap.remove(series);
}
if (seriesCategoryMap.isEmpty() && categoryAxis.isAutoRanging()) categoryAxis.getCategories().clear();
}
private void processDataRemove(final Series series, final Data item) {
Node bar = item.getNode();
getPlotChildren().remove(bar);
updateMap(series, item);
}
private void animateDataAdd(Data item, Node bar) {
double barVal;
if (orientation == Orientation.VERTICAL) {
barVal = ((Number) item.getYValue()).doubleValue();
if (barVal < 0) {
bar.getStyleClass().add("negative");
}
item.setYValue(getYAxis().toRealValue(getYAxis().getZeroPosition()));
setCurrentDisplayedYValue(item, getYAxis().toRealValue(getYAxis().getZeroPosition()));
getPlotChildren().add(bar);
item.setYValue(getYAxis().toRealValue(barVal));
animate(
new KeyFrame(Duration.ZERO, new KeyValue(
currentDisplayedYValueProperty(item),
getCurrentDisplayedYValue(item))),
new KeyFrame(Duration.millis(700), new KeyValue(
currentDisplayedYValueProperty(item),
item.getYValue(), Interpolator.EASE_BOTH))
);
} else {
barVal = ((Number) item.getXValue()).doubleValue();
if (barVal < 0) {
bar.getStyleClass().add("negative");
}
item.setXValue(getXAxis().toRealValue(getXAxis().getZeroPosition()));
setCurrentDisplayedXValue(item, getXAxis().toRealValue(getXAxis().getZeroPosition()));
getPlotChildren().add(bar);
item.setXValue(getXAxis().toRealValue(barVal));
animate(
new KeyFrame(Duration.ZERO, new KeyValue(
currentDisplayedXValueProperty(item),
getCurrentDisplayedXValue(item))),
new KeyFrame(Duration.millis(700), new KeyValue(
currentDisplayedXValueProperty(item),
item.getXValue(), Interpolator.EASE_BOTH))
);
}
}
private Timeline createDataRemoveTimeline(Data item, final Node bar, final Series series) {
Timeline t = new Timeline();
if (orientation == Orientation.VERTICAL) {
t.getKeyFrames().addAll(
new KeyFrame(Duration.ZERO, new KeyValue(
currentDisplayedYValueProperty(item),
getCurrentDisplayedYValue(item))),
new KeyFrame(Duration.millis(700), actionEvent -> {
processDataRemove(series, item);
}, new KeyValue(
currentDisplayedYValueProperty(item),
item.getYValue(), Interpolator.EASE_BOTH))
);
} else {
item.setXValue(getXAxis().toRealValue(getXAxis().getZeroPosition()));
t.getKeyFrames().addAll(
new KeyFrame(Duration.ZERO, new KeyValue(
currentDisplayedXValueProperty(item),
getCurrentDisplayedXValue(item))),
new KeyFrame(Duration.millis(700), actionEvent -> {
processDataRemove(series, item);
}, new KeyValue(
currentDisplayedXValueProperty(item),
item.getXValue(), Interpolator.EASE_BOTH))
);
}
return t;
}
private Node createBar(Series series, int seriesIndex, final Data item, int itemIndex) {
Node bar = item.getNode();
if (bar == null) {
bar = new StackPane();
bar.setAccessibleRole(AccessibleRole.TEXT);
bar.setAccessibleRoleDescription("Bar");
bar.focusTraversableProperty().bind(Platform.accessibilityActiveProperty());
item.setNode(bar);
}
bar.getStyleClass().setAll("chart-bar", "series" + seriesIndex, "data" + itemIndex, series.defaultColorStyleClass);
return bar;
}
private List> getDataItem(Series series, String category) {
Map>> catmap = seriesCategoryMap.get(series);
return catmap != null ? catmap.get(category) != null ?
catmap.get(category) : new ArrayList<>() : new ArrayList<>();
}
/** {@inheritDoc} */
@Override void seriesBeingRemovedIsAdded(Series series) {
if (parallelTransition != null) {
parallelTransition.setOnFinished(null);
parallelTransition.stop();
parallelTransition = null;
getPlotChildren().remove(series.getNode());
for (Data d:series.getData()) getPlotChildren().remove(d.getNode());
removeSeriesFromDisplay(series);
}
}
// -------------- STYLESHEET HANDLING ------------------------------------------------------------------------------
/*
* Super-lazy instantiation pattern from Bill Pugh.
*/
private static class StyleableProperties {
private static final CssMetaData,Number> CATEGORY_GAP =
new CssMetaData<>("-fx-category-gap",
SizeConverter.getInstance(), 10.0) {
@Override
public boolean isSettable(StackedBarChart node) {
return node.categoryGap == null || !node.categoryGap.isBound();
}
@Override
public StyleableProperty getStyleableProperty(StackedBarChart node) {
return (StyleableProperty)node.categoryGapProperty();
}
};
private static final List> STYLEABLES;
static {
final List> styleables =
new ArrayList<>(XYChart.getClassCssMetaData());
styleables.add(CATEGORY_GAP);
STYLEABLES = Collections.unmodifiableList(styleables);
}
}
/**
* Gets the {@code CssMetaData} associated with this class, which may include the
* {@code CssMetaData} of its superclasses.
* @return the {@code CssMetaData}
* @since JavaFX 8.0
*/
public static List> getClassCssMetaData() {
return StyleableProperties.STYLEABLES;
}
/**
* {@inheritDoc}
* @since JavaFX 8.0
*/
@Override
public List> getCssMetaData() {
return getClassCssMetaData();
}
/** Pseudoclass indicating this is a vertical chart. */
private static final PseudoClass VERTICAL_PSEUDOCLASS_STATE =
PseudoClass.getPseudoClass("vertical");
/** Pseudoclass indicating this is a horizontal chart. */
private static final PseudoClass HORIZONTAL_PSEUDOCLASS_STATE =
PseudoClass.getPseudoClass("horizontal");
}
