我准备好了 StackedBarChart...我想在同一个图表中添加一个 LineChart，以显示“最大级别”...我该怎么做？
问问题
2083 次
2 回答
3
RFE：https ://javafx-jira.kenai.com/browse/RT-22949
现在没有办法了，只能自己实现。
于 2013-05-13T16:11:51.640 回答
0
/*
*
* This class overwrites XYChart, it allows to have a StackedBarChart and
* additionally to have a "line", this line can be passes as parameter exactly
* the same way as when a StackedBarChart is created, but adding the title "Limit".
* example:
* ------------------------------------------------
* ObservableList<XYChart.Series> barChartData = FXCollections.observableArrayList(
* new ParetoChart.Series("Serie # 1", FXCollections.observableArrayList(
* stackedBarCharts)),
* new ParetoChart.Series("Limit", FXCollections.observableArrayList(
* limit))
* );
* XYChart chart = new ParetoChart(xAxis, yAxis, barChartData, 0);
*
*
* Where stackedBarCharts and limit are Lists with the corresponding values.
* ---------------------------------------------
* @author Juan Jose Robles - robles.gomez.juan@gmail.com
*
*/
import java.util.*;
import javafx.animation.*;
import javafx.beans.property.DoubleProperty;
import javafx.collections.FXCollections;
import javafx.collections.ObservableList;
import javafx.event.ActionEvent;
import javafx.event.EventHandler;
import javafx.geometry.Orientation;
import javafx.scene.Node;
import javafx.scene.layout.StackPane;
import javafx.util.Duration;
import com.sun.javafx.charts.Legend;
import com.sun.javafx.css.StyleableDoubleProperty;
import com.sun.javafx.css.StyleableProperty;
import com.sun.javafx.css.converters.SizeConverter;
import javafx.beans.value.WritableValue;
import javafx.scene.chart.*;
import javafx.scene.shape.LineTo;
import javafx.scene.shape.MoveTo;
import javafx.scene.shape.Path;
/**
* ParetoChart 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.
*/
public class ParetoChart<X, Y> extends XYChart<X, Y> {
// -------------- PRIVATE FIELDS -------------------------------------------
private Map<Series, Map<String, Data<X, Y>>> seriesCategoryMap = new HashMap<Series, Map<String, Data<X, Y>>>();
private Legend legend = new Legend();
private final Orientation orientation;
private CategoryAxis categoryAxis;
private ValueAxis valueAxis;
private int seriesDefaultColorIndex = 0;
private Map<Series<X, Y>, String> seriesDefaultColorMap = new HashMap<Series<X, Y>, String>();
// -------------- 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 ParetoChart.this;
}
@Override
public String getName() {
return "categoryGap";
}
public StyleableProperty getStyleableProperty() {
return ParetoChart.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 ParetoChart(Axis<X> xAxis, Axis<Y> yAxis) {
this(xAxis, yAxis, FXCollections.<Series<X, Y>>observableArrayList());
}
/**
* Construct a new ParetoChart 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 ParetoChart(Axis<X> xAxis, Axis<Y> yAxis, ObservableList<Series<X, Y>> data) {
super(xAxis, yAxis);
getStyleClass().add("stacked-bar-chart");
setLegend(legend);
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;
}
setData(data);
}
/**
* Construct a new ParetoChart 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 ParetoChart(Axis<X> xAxis, Axis<Y> yAxis, ObservableList<Series<X, Y>> data, double categoryGap) {
this(xAxis, yAxis);
setData(data);
setCategoryGap(categoryGap);
}
// -------------- METHODS --------------------------------------------------
@Override protected void dataItemAdded(Series<X, Y> series, int itemIndex, Data<X, Y> 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<String, Data<X, Y>> categoryMap = seriesCategoryMap.get(series);
if (categoryMap == null) {
categoryMap = new HashMap<String, Data<X, Y>>();
seriesCategoryMap.put(series, categoryMap);
}
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<X, Y> item, final Series<X, Y> series) {
final Node bar = item.getNode();
if (shouldAnimate()) {
Timeline t = createDataRemoveTimeline(item, bar, series);
t.setOnFinished(new EventHandler<ActionEvent>() {
public void handle(ActionEvent event) {
removeDataItemFromDisplay(series, item);
}
});
t.play();
} else {
getPlotChildren().remove(bar);
removeDataItemFromDisplay(series, item);
}
}
/** @inheritDoc */
@Override protected void dataItemChanged(Data<X, Y> 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().add("negative");
}
}
private void animateDataAdd(Data<X, Y> 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(
TimelineBuilder.create().keyFrames(
new KeyFrame(Duration.ZERO, new KeyValue(currentDisplayedYValueProperty(item), getCurrentDisplayedYValue(item))),
new KeyFrame(Duration.millis(700), new KeyValue(currentDisplayedYValueProperty(item), item.getYValue(), Interpolator.EASE_BOTH))).build());
} 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(
TimelineBuilder.create().keyFrames(
new KeyFrame(Duration.ZERO, new KeyValue(currentDisplayedXValueProperty(item), getCurrentDisplayedXValue(item))),
new KeyFrame(Duration.millis(700), new KeyValue(currentDisplayedXValueProperty(item), item.getXValue(), Interpolator.EASE_BOTH))).build());
}
}
/** @inheritDoc */
@Override protected void seriesAdded(Series<X, Y> series, int seriesIndex) {
String defaultColorStyleClass = "default-color" + (seriesDefaultColorIndex % 8);
seriesDefaultColorMap.put(series, defaultColorStyleClass);
seriesDefaultColorIndex++;
// handle any data already in series
// create entry in the map
Map<String, Data<X, Y>> categoryMap = new HashMap<String, Data<X, Y>>();
for (int j = 0; j < series.getData().size(); j++) {
Data<X, Y> 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();
}
categoryMap.put(category, item);
if (shouldAnimate()) {
animateDataAdd(item, bar);
} else {
getPlotChildren().add(bar);
}
}
if (categoryMap.size() > 0) {
seriesCategoryMap.put(series, categoryMap);
}
Path seriesPath = new Path();
seriesPath.getStyleClass().setAll("candlestick-average-line","series"+seriesIndex);
series.setNode(seriesPath);
getPlotChildren().add(seriesPath);
}
private Timeline createDataRemoveTimeline(Data<X, Y> item, final Node bar, final Series<X, Y> series) {
Timeline t = new Timeline();
if (orientation == Orientation.VERTICAL) {
item.setYValue(getYAxis().toRealValue(getYAxis().getZeroPosition()));
t.getKeyFrames().addAll(
new KeyFrame(Duration.ZERO, new KeyValue(currentDisplayedYValueProperty(item), getCurrentDisplayedYValue(item))),
new KeyFrame(Duration.millis(700), new EventHandler<ActionEvent>() {
@Override
public void handle(ActionEvent actionEvent) {
getPlotChildren().remove(bar);
}
},
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), new EventHandler<ActionEvent>() {
@Override
public void handle(ActionEvent actionEvent) {
getPlotChildren().remove(bar);
}
},
new KeyValue(currentDisplayedXValueProperty(item), item.getXValue(), Interpolator.EASE_BOTH)));
}
return t;
}
@Override protected void seriesRemoved(final Series<X, Y> series) {
// remove all symbol nodes
if (shouldAnimate()) {
ParallelTransition pt = new ParallelTransition();
pt.setOnFinished(new EventHandler<ActionEvent>() {
public void handle(ActionEvent event) {
removeSeriesFromDisplay(series);
}
});
for (Data<X, Y> d : series.getData()) {
final Node bar = d.getNode();
// Animate series deletion
if (getSeriesSize() > 1) {
for (int j = 0; j < series.getData().size(); j++) {
Data<X, Y> item = series.getData().get(j);
Timeline t = createDataRemoveTimeline(item, bar, series);
pt.getChildren().add(t);
}
} else {
// fade out last series
FadeTransition ft = new FadeTransition(Duration.millis(700), bar);
ft.setFromValue(1);
ft.setToValue(0);
ft.setOnFinished(new EventHandler<ActionEvent>() {
@Override
public void handle(ActionEvent actionEvent) {
getPlotChildren().remove(bar);
}
});
pt.getChildren().add(ft);
}
}
pt.play();
} else {
for (Data<X, Y> d : series.getData()) {
final Node bar = d.getNode();
getPlotChildren().remove(bar);
}
removeSeriesFromDisplay(series);
}
}
/** @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.
final Axis<X> xa = getXAxis();
final Axis<Y> ya = getYAxis();
if (xa.isAutoRanging()) {
List xData = new ArrayList<Number>();
if (xa instanceof CategoryAxis) {
xData.addAll(categoryAxis.getCategories());
} else {
int catIndex = 0;
for (String category : categoryAxis.getCategories()) {
int index = 0;
double totalX = 0;
Iterator<Series<X, Y>> seriesIterator = getDisplayedSeriesIterator();
while (seriesIterator.hasNext()) {
Series<X, Y> series = seriesIterator.next();
final Data<X, Y> item = getDataItem(series, index, catIndex, category);
totalX += xa.toNumericValue(item.getXValue());
}
xData.add(totalX);
catIndex++;
}
}
xa.invalidateRange(xData);
}
if (ya.isAutoRanging()) {
List yData = new ArrayList<Number>();
if (ya instanceof CategoryAxis) {
yData.addAll(categoryAxis.getCategories());
} else {
int catIndex = 0;
for (String category : categoryAxis.getCategories()) {
int index = 0;
double totalY = 0;
Iterator<Series<X, Y>> seriesIterator = getDisplayedSeriesIterator();
while (seriesIterator.hasNext()) {
Series<X, Y> series = seriesIterator.next();
final Data<X, Y> item = getDataItem(series, index, catIndex, category);
if(item != null)
totalY += ya.toNumericValue(item.getYValue());
}
yData.add(totalY);
catIndex++;
}
}
ya.invalidateRange(yData);
}
}
/** @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);
final double zeroPos = valueAxis.getZeroPosition();
// update bar positions and sizes
int catIndex = 0;
for (String category : categoryAxis.getCategories()) {
int index = 0;
int currentHeight = 0;
Iterator<Series<X, Y>> seriesIterator = getDisplayedSeriesIterator();
Path seriesPath = null;
while (seriesIterator.hasNext()) {
Series<X, Y> series = seriesIterator.next();
final Data<X, Y> item = getDataItem(series, index, catIndex, category);
double valPos = 0;
double categoryPos = 0;
if (item != null) {
final Node bar = item.getNode();
if (orientation == Orientation.VERTICAL) {
//Results res = (Results)getCurrentDisplayedYValue(item);
categoryPos = getXAxis().getDisplayPosition(getCurrentDisplayedXValue(item));
valPos = getYAxis().getDisplayPosition(getCurrentDisplayedYValue(item));
//valPos = getYAxis().res.getDuration();
} else {
categoryPos = getYAxis().getDisplayPosition(getCurrentDisplayedYValue(item));
valPos = getXAxis().getDisplayPosition(getCurrentDisplayedXValue(item));
}
final double bottom = currentHeight + Math.min(valPos, zeroPos);
final double top = currentHeight + Math.max(valPos, zeroPos);
if (orientation == Orientation.VERTICAL) {
if (series.getName().equals("Limit")){
bar.resizeRelocate(0,
bottom, 0, top - bottom);
}
else{
bar.resizeRelocate(categoryPos + barOffset,
bottom, barWidth, top - bottom);
}
} else {
//noinspection SuspiciousNameCombination
bar.resizeRelocate(bottom,
categoryPos + barOffset,
top - bottom, barWidth);
}
currentHeight -= top - bottom;
index++;
}
if (series.getName().equals("Limit")){
if (series.getNode() instanceof Path) {
seriesPath = (Path)series.getNode();
//seriesPath.getElements().clear();
}
if (seriesPath != null) {
if (seriesPath.getElements().isEmpty()) {
seriesPath.getElements().add(new MoveTo( categoryPos,valPos));
} else {
seriesPath.getElements().add(new LineTo( categoryPos,valPos));
}
}
}
}
catIndex++;
}
}
/**
* Computes the size of series linked list
* @return size of series linked list
*/
int getSeriesSize() {
int count = 0;
Iterator<Series<X, Y>> seriesIterator = getDisplayedSeriesIterator();
while (seriesIterator.hasNext()) {
seriesIterator.next();
count++;
}
return count;
}
/**
* This is called whenever a series is added or removed and the legend needs to be updated
*/
@Override protected void updateLegend() {
legend.getItems().clear();
if (getData() != null) {
for (int seriesIndex = 0; seriesIndex < getData().size(); seriesIndex++) {
Series series = getData().get(seriesIndex);
String name = series.getName();
if ("".equals(name)){
name = "Undefined";
}
if (name.equals("Limit")){
continue;
}
Legend.LegendItem legenditem = new Legend.LegendItem(name);
String defaultColorStyleClass = seriesDefaultColorMap.get(series);
legenditem.getSymbol().getStyleClass().addAll("chart-bar", "series" + seriesIndex, "bar-legend-symbol",
defaultColorStyleClass);
legend.getItems().add(legenditem);
}
}
if (legend.getItems().size() > 0) {
if (getLegend() == null) {
setLegend(legend);
}
} else {
setLegend(null);
}
}
private Node createBar(Series series, int seriesIndex, final Data item, int itemIndex) {
Node bar = item.getNode();
if (bar == null) {
bar = new StackPane();
item.setNode(bar);
}
String defaultColorStyleClass = seriesDefaultColorMap.get(series);
bar.getStyleClass().setAll("chart-bar", "series" + seriesIndex, "data" + itemIndex, defaultColorStyleClass);
return bar;
}
private Data<X, Y> getDataItem(Series<X, Y> series, int seriesIndex, int itemIndex, String category) {
Map<String, Data<X, Y>> catmap = seriesCategoryMap.get(series);
if (catmap == null) return null;
return catmap.get(category);
}
// -------------- STYLESHEET HANDLING ------------------------------------------------------------------------------
/**
* Super-lazy instantiation pattern from Bill Pugh.
* @treatAsPrivate implementation detail
*/
private static class StyleableProperties {
private static final StyleableProperty<ParetoChart,Number> CATEGORY_GAP =
new StyleableProperty<ParetoChart,Number>("-fx-category-gap",
SizeConverter.getInstance(), 10.0) {
@Override
public boolean isSettable(ParetoChart node) {
return node.categoryGap == null || !node.categoryGap.isBound();
}
@Override
public WritableValue<Number> getWritableValue(ParetoChart node) {
return node.categoryGapProperty();
}
};
private static final List<StyleableProperty> STYLEABLES;
static {
final List<StyleableProperty> styleables =
new ArrayList<StyleableProperty>(XYChart.impl_CSS_STYLEABLES());
Collections.addAll(styleables,
CATEGORY_GAP
);
STYLEABLES = Collections.unmodifiableList(styleables);
}
}
/**
* @treatAsPrivate implementation detail
* @deprecated This is an internal API that is not intended for use and will be removed in the next version
*/
@Deprecated
public static List<StyleableProperty> impl_CSS_STYLEABLES() {
return ParetoChart.StyleableProperties.STYLEABLES;
}
/**
* RT-19263
* @treatAsPrivate implementation detail
* @deprecated This is an experimental API that is not intended for general use and is subject to change in future versions
*/
@Deprecated
public List<StyleableProperty> impl_getStyleableProperties() {
return impl_CSS_STYLEABLES();
}
}
于 2013-07-08T19:20:57.197 回答