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de.gsi.chart.plugins.EditDataSet Maven / Gradle / Ivy
package de.gsi.chart.plugins;
import java.util.LinkedList;
import java.util.List;
import java.util.concurrent.ConcurrentHashMap;
import java.util.function.Predicate;
import org.controlsfx.glyphfont.FontAwesome;
import org.controlsfx.glyphfont.Glyph;
import de.gsi.chart.Chart;
import de.gsi.chart.XYChart;
import de.gsi.chart.axes.Axis;
import de.gsi.chart.renderer.Renderer;
import de.gsi.chart.utils.FXUtils;
import de.gsi.dataset.DataSet;
import de.gsi.dataset.EditConstraints;
import de.gsi.dataset.EditableDataSet;
import javafx.beans.property.BooleanProperty;
import javafx.beans.property.DoubleProperty;
import javafx.beans.property.ObjectProperty;
import javafx.beans.property.ReadOnlyBooleanProperty;
import javafx.beans.property.SimpleBooleanProperty;
import javafx.beans.property.SimpleDoubleProperty;
import javafx.beans.property.SimpleObjectProperty;
import javafx.collections.ObservableList;
import javafx.css.PseudoClass;
import javafx.event.EventHandler;
import javafx.geometry.Bounds;
import javafx.geometry.Insets;
import javafx.geometry.Orientation;
import javafx.geometry.Point2D;
import javafx.scene.Cursor;
import javafx.scene.Node;
import javafx.scene.canvas.Canvas;
import javafx.scene.control.Button;
import javafx.scene.control.ComboBox;
import javafx.scene.control.Label;
import javafx.scene.control.Tooltip;
import javafx.scene.input.InputEvent;
import javafx.scene.input.KeyCode;
import javafx.scene.input.KeyEvent;
import javafx.scene.input.MouseButton;
import javafx.scene.input.MouseDragEvent;
import javafx.scene.input.MouseEvent;
import javafx.scene.layout.HBox;
import javafx.scene.layout.Pane;
import javafx.scene.layout.Region;
import javafx.scene.layout.VBox;
import javafx.scene.paint.Color;
import javafx.scene.shape.Circle;
import javafx.scene.shape.Rectangle;
import javafx.stage.Popup;
import javafx.util.Pair;
/**
* @author rstein
*/
public class EditDataSet extends TableViewer {
protected static final String STYLE_CLASS_SELECT_RECT = "chart-select-rect";
protected static final String STYLE_CLASS_SELECT_PATH = "chart-select-marker";
protected static final PseudoClass NOEDIT_PSEUDO_CLASS = PseudoClass.getPseudoClass("noEdit");
protected static final int DEFAULT_MARKER_RADIUS = 5;
public static final int DEFAULT_PICKING_DISTANCE = 10;
protected static final int SELECT_RECT_MIN_SIZE = 5;
protected static final int FONT_SIZE_COMBO = FONT_SIZE - 4;
private static boolean shiftDown;
private static boolean controlDown;
protected boolean isPointDragActive;
// Default mouse select filter: left mouse- and control-button down (only).
private final Predicate defaultSelectFilter = event -> MouseEventsHelper.isOnlyPrimaryButtonDown(event)
&& event.isControlDown() && isMouseEventWithinCanvas(event) && !isPointDragActive;
protected ConcurrentHashMap> markedPoints = new ConcurrentHashMap<>();
protected final Rectangle selectRectangle = new Rectangle();
protected Point2D selectStartPoint;
protected Point2D selectEndPoint;
protected Cursor originalCursor;
protected final ObjectProperty dragCursor = new SimpleObjectProperty<>(this, "dragCursor");
protected BooleanProperty editEnable;
protected BooleanProperty allowShiftX = new SimpleBooleanProperty(this, "allowShiftX", true);
protected BooleanProperty allowShiftY = new SimpleBooleanProperty(this, "allowShiftY", true);
protected Predicate zoomInMouseFilter = defaultSelectFilter;
protected Pane markerPane = new Pane();
private double mouseOriginX = -1;
private double mouseOriginY = -1;
protected PointEditionPopup popup = new PointEditionPopup();
private final EventHandler keyReleasedHandler = keyEvent -> {
if (keyEvent.getCode() == KeyCode.CONTROL) {
uninstallCursor();
controlDown = false;
}
if (keyEvent.getCode() == KeyCode.SHIFT) {
shiftDown = false;
}
};
private final EventHandler keyPressedHandler = keyEvent -> {
if (keyEvent.getCode() == KeyCode.CONTROL) {
installCursor();
controlDown = true;
isPointDragActive = false;
keyEvent.consume();
}
if (keyEvent.getCode() == KeyCode.SHIFT) {
shiftDown = true;
}
if (keyEvent.getCode() == KeyCode.ESCAPE && (!shiftDown || !controlDown)) {
this.markerPane.getChildren().clear();
}
};
private final EventHandler selectionStartHandler = event -> {
if (getSelectionMouseFilter() == null || getSelectionMouseFilter().test(event)) {
selectionStarted(event);
event.consume();
}
if (event.isSecondaryButtonDown()) {
// right mouse click on Marker
if (event.getSource() != null && (event.getSource() instanceof SelectedDataPoint)) {
popup.showPopup(event, (SelectedDataPoint) event.getSource());
event.consume();
} else {
popup.showPopup(event, null);
event.consume();
return;
}
}
};
private final EventHandler selectionDragHandler = event -> {
performPointDrag(event);
if (selectionOngoing() && !isPointDragActive) {
selectionDragged(event);
event.consume();
}
};
private final EventHandler selectionEndHandler = event -> {
if (selectionOngoing() && !isPointDragActive) {
selectionEnded();
event.consume();
}
};
/**
* Creates an event handler that handles a mouse drag on the node.
*/
protected EventHandler dragHandler = this::performPointDrag;
public static boolean isShiftDown() {
return shiftDown;
}
public static boolean isControlDown() {
return controlDown;
}
/**
* Mouse cursor to be used during drag operation.
*
* @return the mouse cursor property
*/
public final ObjectProperty dragCursorProperty() {
return dragCursor;
}
/**
* Sets value of the {@link #dragCursorProperty()}.
*
* @param cursor the cursor to be used by the plugin
*/
public final void setDragCursor(final Cursor cursor) {
dragCursorProperty().set(cursor);
}
/**
* Returns the value of the {@link #dragCursorProperty()}
*
* @return the current cursor
*/
public final Cursor getDragCursor() {
return dragCursorProperty().get();
}
/**
* @return whether points can be edited
*/
public final ReadOnlyBooleanProperty editEnableProperty() {
return editEnable;
}
/**
* Returns the value of the {@link #editEnableProperty()}
*
* @return true: can edit point
*/
public final boolean isEditable() {
return editEnableProperty().get();
}
protected void installCursor() {
final Region chart = getChart();
originalCursor = chart.getCursor();
if (getDragCursor() != null) {
chart.setCursor(getDragCursor());
}
}
protected void uninstallCursor() {
getChart().setCursor(originalCursor);
}
private final DoubleProperty pickingDistance = new SimpleDoubleProperty(this, "pickingDistance",
DEFAULT_PICKING_DISTANCE) {
@Override
public void set(final double newValue) {
super.set(Math.max(1, newValue));
}
};
/**
* Distance of the mouse cursor from the data point (expressed in display
* units) that should trigger showing the tool tip. By default initialised
* to {@value #DEFAULT_PICKING_DISTANCE}.
*
* @return the picking distance property
*/
public final DoubleProperty pickingDistanceProperty() {
return pickingDistance;
}
/**
* Returns the value of the {@link #pickingDistanceProperty()}.
*
* @return the current picking distance
*/
public final double getPickingDistance() {
return pickingDistanceProperty().get();
}
/**
* Sets the value of {@link #pickingDistanceProperty()}.
*
* @param distance the new picking distance
*/
public final void setPickingDistance(final double distance) {
pickingDistanceProperty().set(distance);
}
public EditDataSet() {
super();
editable = true;
setDragCursor(Cursor.CROSSHAIR);
selectRectangle.setManaged(false);
selectRectangle.getStyleClass().add(STYLE_CLASS_SELECT_RECT);
getChartChildren().add(selectRectangle);
registerMouseHandlers();
registerKeyHandlers();
markerPane.setManaged(false);
// register marker pane
chartProperty().addListener((change, o, n) -> {
if (o != null) {
o.getCanvasForeground().getChildren().remove(markerPane);
o.getPlotArea().setBottom(null);
// markerPane.prefWidthProperty().unbind();
// markerPane.prefHeightProperty().unbind();
}
if (n != null) {
n.getCanvasForeground().getChildren().add(markerPane);
markerPane.toFront();
markerPane.setVisible(true);
// markerPane.prefWidthProperty().bind(n.getCanvas().widthProperty());
// markerPane.prefHeightProperty().bind(n.getCanvas().heightProperty());
}
});
}
private void registerMouseHandlers() {
registerInputEventHandler(MouseEvent.MOUSE_PRESSED, selectionStartHandler);
registerInputEventHandler(MouseEvent.MOUSE_DRAGGED, selectionDragHandler);
registerInputEventHandler(MouseEvent.MOUSE_RELEASED, selectionEndHandler);
}
private void registerKeyHandlers() {
registerInputEventHandler(KeyEvent.KEY_PRESSED, keyPressedHandler);
registerInputEventHandler(KeyEvent.KEY_RELEASED, keyReleasedHandler);
}
@Override
protected HBox getInteractorBar() {
final HBox interactorBar = super.getInteractorBar();
final Glyph editGlyph = new Glyph(FONT_AWESOME, FontAwesome.Glyph.EDIT).size(FONT_SIZE);
final Glyph addGlyph = new Glyph(FONT_AWESOME, FontAwesome.Glyph.PLUS_CIRCLE).size(FONT_SIZE);
final Glyph removeGlyph = new Glyph(FONT_AWESOME, FontAwesome.Glyph.MINUS_CIRCLE).size(FONT_SIZE);
final Glyph shiftXYGlyph = new Glyph(FONT_AWESOME, FontAwesome.Glyph.ARROWS).size(FONT_SIZE_COMBO);
final Glyph shiftXGlyph = new Glyph(FONT_AWESOME, FontAwesome.Glyph.ARROWS_H).size(FONT_SIZE_COMBO);
final Glyph shiftYGlyph = new Glyph(FONT_AWESOME, FontAwesome.Glyph.ARROWS_V).size(FONT_SIZE_COMBO);
final Button editButton = new Button(null, editGlyph);
editButton.setPadding(new Insets(3, 3, 3, 3));
editButton.setTooltip(new Tooltip("enables edit interactor"));
interactorBar.getChildren().add(editButton);
// editButton.setOnAction(evt -> {
// editEnable.set(!editEnable.get());
// });
final Button addButton = new Button(null, addGlyph);
addGlyph.setTextFill(Color.DARKGREEN);
addButton.setPadding(new Insets(3, 3, 3, 3));
addButton.setTooltip(new Tooltip("add data point"));
interactorBar.getChildren().add(addButton);
final Button removeButton = new Button(null, removeGlyph);
removeGlyph.setTextFill(Color.DARKRED);
removeButton.setPadding(new Insets(3, 3, 3, 3));
removeButton.setTooltip(new Tooltip("remove data point"));
interactorBar.getChildren().add(removeButton);
shiftXYGlyph.setTextFill(Color.DARKBLUE);
shiftXYGlyph.setPadding(Insets.EMPTY);
shiftXGlyph.setTextFill(Color.DARKBLUE);
shiftXGlyph.setPadding(Insets.EMPTY);
shiftYGlyph.setTextFill(Color.DARKBLUE);
shiftYGlyph.setPadding(Insets.EMPTY);
final ComboBox comBox = new ComboBox<>();
comBox.setPrefSize(-1, -1);
comBox.setPadding(Insets.EMPTY);
comBox.setBorder(null);
comBox.getItems().addAll(shiftXYGlyph, shiftXGlyph, shiftYGlyph);
comBox.getSelectionModel().select(0);
comBox.getSelectionModel().selectedIndexProperty().addListener((ch, o, n) -> {
if (n == null) {
return;
}
switch (n.intValue()) {
case 1: // allow shifts in X
allowShiftX.set(true);
allowShiftY.set(false);
break;
case 2:// allow shifts in Y
allowShiftX.set(false);
allowShiftY.set(true);
break;
case 0:
default:
allowShiftX.set(true);
allowShiftY.set(true);
break;
}
});
interactorBar.getChildren().add(comBox);
if (editEnable == null) {
editEnable = new SimpleBooleanProperty(this, "editEnable", false);
}
editEnable.addListener((ch, o, n) -> {
removeButton.setDisable(!n);
comBox.setDisable(!n);
});
return interactorBar;
}
protected void selectionStarted(final MouseEvent event) {
selectStartPoint = new Point2D(event.getX(), event.getY());
selectRectangle.setX(selectStartPoint.getX());
selectRectangle.setY(selectStartPoint.getY());
selectRectangle.setWidth(0);
selectRectangle.setHeight(0);
selectRectangle.setVisible(true);
// installCursor();
}
protected boolean selectionOngoing() {
return selectStartPoint != null;
}
protected void selectionDragged(final MouseEvent event) {
final Bounds plotAreaBounds = getChart().getPlotArea().getBoundsInLocal();
selectEndPoint = limitToPlotArea(event, plotAreaBounds);
selectRectangle.setX(Math.min(selectStartPoint.getX(), selectEndPoint.getX())); // zoomRectX
selectRectangle.setY(Math.min(selectStartPoint.getY(), selectEndPoint.getY())); // zoomRectY
selectRectangle.setWidth(Math.abs(selectEndPoint.getX() - selectStartPoint.getX())); // zoomRectWidth
selectRectangle.setHeight(Math.abs(selectEndPoint.getY() - selectStartPoint.getY())); // zoomRectHeight
}
/**
* limits the mouse event position to the min/max range of the canavs (N.B.
* event can occur to be negative/larger/outside than the canvas) This is to
* avoid zooming outside the visible canvas range
*
* @param event the mouse event
* @param plotBounds of the canvas
* @return the clipped mouse location
*/
private static Point2D limitToPlotArea(final MouseEvent event, final Bounds plotBounds) {
final double limitedX = Math.max(Math.min(event.getX() - plotBounds.getMinX(), plotBounds.getMaxX()),
plotBounds.getMinX());
final double limitedY = Math.max(Math.min(event.getY() - plotBounds.getMinY(), plotBounds.getMaxY()),
plotBounds.getMinY());
return new Point2D(limitedX, limitedY);
}
protected void selectionEnded() {
selectRectangle.setVisible(false);
if (selectRectangle.getWidth() > SELECT_RECT_MIN_SIZE && selectRectangle.getHeight() > SELECT_RECT_MIN_SIZE) {
performSelection();
}
selectStartPoint = selectEndPoint = null;
// uninstallCursor();
}
protected void performSelection() {
if (!(getChart() instanceof XYChart)) {
return;
}
final XYChart xyChart = (XYChart) getChart();
if (!isShiftDown()) {
markedPoints.clear();
}
findDataPoint(xyChart.getFirstAxis(Orientation.HORIZONTAL), xyChart.getFirstAxis(Orientation.VERTICAL),
xyChart.getDatasets());
for (final Renderer rend : xyChart.getRenderers()) {
final ObservableList axes = rend.getAxes();
findDataPoint(getFirstAxis(axes, Orientation.HORIZONTAL), getFirstAxis(axes, Orientation.VERTICAL),
rend.getDatasets());
}
if (markedPoints.isEmpty()) {
editEnable.set(false);
} else {
editEnable.set(true);
}
updateMarker();
}
private static Axis getFirstAxis(final List axes, final Orientation orientation) {
for (final Axis axis : axes) {
if (axis.getSide() == null) {
continue;
}
switch (orientation) {
case VERTICAL:
if (axis.getSide().isVertical()) {
return axis;
}
break;
case HORIZONTAL:
default:
if (axis.getSide().isHorizontal()) {
return axis;
}
break;
}
}
return null;
}
protected void updateMarker() {
this.markerPane.getChildren().clear();
markerPane.getParent().setMouseTransparent(false);
for (final EditableDataSet dataSet : markedPoints.keySet()) {
final ConcurrentHashMap dataPoints = markedPoints.get(dataSet);
for (final Integer dataPointIndex : dataPoints.keySet()) {
final SelectedDataPoint dataPoint = dataPoints.get(dataPointIndex);
// dataPoint.setOnMouseClicked(evt -> {
// if (evt.isSecondaryButtonDown()) {
// // right clicked on circle
// }
// });
dataPoint.update();
markerPane.getChildren().add(dataPoint);
}
}
if (markerPane.getChildren().isEmpty()) {
markerPane.getParent().setMouseTransparent(true);
}
}
protected void findDataPoint(final Axis xAxis, final Axis yAxis, final List dataSets) {
final double xMinScreen = Math.min(selectStartPoint.getX(), selectEndPoint.getX());
final double xMaxScreen = Math.max(selectStartPoint.getX(), selectEndPoint.getX());
final double yMinScreen = Math.min(selectStartPoint.getY(), selectEndPoint.getY());
final double yMaxScreen = Math.max(selectStartPoint.getY(), selectEndPoint.getY());
for (final DataSet ds : dataSets) {
if (!(ds instanceof EditableDataSet)) {
continue;
}
final EditableDataSet dataSet = (EditableDataSet) ds;
final int indexMin = Math.max(0, dataSet.getXIndex(xAxis.getValueForDisplay(xMinScreen)));
final int indexMax = Math.min(dataSet.getXIndex(xAxis.getValueForDisplay(xMaxScreen)) + 1,
dataSet.getDataCount());
// N.B. (0,0) screen coordinate is in the top left corner vs. normal
// 0,0 in the bottom left -> need to invert limits
final double yMax = yAxis.getValueForDisplay(yMinScreen);
final double yMin = yAxis.getValueForDisplay(yMaxScreen);
final ConcurrentHashMap dataSetHashMap = markedPoints.computeIfAbsent(dataSet,
k -> new ConcurrentHashMap<>());
for (int i = indexMin; i < indexMax; i++) {
final double y = dataSet.getY(i);
if ((y >= yMin) && (y <= yMax)) {
if (isShiftDown()) {
// add if not existing/remove if existing
if (dataSetHashMap.get(i) != null) {
dataSetHashMap.remove(i);
} else {
dataSetHashMap.put(i, new SelectedDataPoint(xAxis, yAxis, dataSet, i));
}
} else {
dataSetHashMap.put(i, new SelectedDataPoint(xAxis, yAxis, dataSet, i));
}
}
}
}
}
protected boolean isMouseEventWithinCanvas(final MouseEvent mouseEvent) {
final Canvas canvas = getChart().getCanvas();
// listen to only events within the canvas
final Point2D mouseLoc = new Point2D(mouseEvent.getScreenX(), mouseEvent.getScreenY());
final Bounds screenBounds = canvas.localToScreen(canvas.getBoundsInLocal());
return screenBounds.contains(mouseLoc);
}
/**
* Returns zoom-in mouse event filter.
*
* @return zoom-in mouse event filter
* @see #setZoomInMouseFilter(Predicate)
*/
public Predicate getSelectionMouseFilter() {
return zoomInMouseFilter;
}
/**
* Sets filter on {@link MouseEvent#DRAG_DETECTED DRAG_DETECTED} events that
* should start zoom-in operation.
*
* @param zoomInMouseFilter the filter to accept zoom-in mouse event. If
* {@code null} then any DRAG_DETECTED event will start zoom-in
* operation. By default it's set to
* {@link #defaultSelectFilter}.
* @see #getSelectionMouseFilter()
*/
public void setZoomInMouseFilter(final Predicate zoomInMouseFilter) {
this.zoomInMouseFilter = zoomInMouseFilter;
}
/**
* Creates an event handler that handles a mouse press on the node.
*
* @param dataPoint corresponding to clicked data point
*
* @return the event handler.
*/
protected EventHandler startDragHandler(final SelectedDataPoint dataPoint) {
return event -> {
if (event.isPrimaryButtonDown() && !controlDown && !shiftDown) {
// start drag
isPointDragActive = true;
// get the current mouse coordinates according to the scene.
mouseOriginX = event.getSceneX();
mouseOriginY = event.getSceneY();
dataPoint.setCursor(Cursor.CLOSED_HAND);
event.consume();
}
if (event.isSecondaryButtonDown()) {
// right mouse click on Marker show popup;
popup.showPopup(event, dataPoint);
}
};
}
protected void performPointDrag(final MouseEvent event) {
if (event.getButton() == MouseButton.PRIMARY && !controlDown && isPointDragActive) {
if (mouseOriginX < 0) {
mouseOriginX = event.getSceneX();
}
if (mouseOriginY < 0) {
mouseOriginY = event.getSceneY();
}
final double deltaX = event.getSceneX() - mouseOriginX;
final double deltaY = event.getSceneY() - mouseOriginY;
// get the latest mouse coordinate.
mouseOriginX = event.getSceneX();
mouseOriginY = event.getSceneY();
applyDrag(deltaX, deltaY);
event.consume();
} else {
isPointDragActive = false;
}
}
protected void applyDrag(final double deltaX, final double deltaY) {
for (final Node node : markerPane.getChildren()) {
if (!(node instanceof SelectedDataPoint)) {
continue;
}
final SelectedDataPoint marker = (SelectedDataPoint) node;
marker.applyDrag(deltaX, deltaY);
}
this.updateMarker();
}
protected class SelectedDataPoint extends Circle {
private final Axis xAxis;
private final Axis yAxis;
private final EditableDataSet dataSet;
private double xValue;
private double yValue;
SelectedDataPoint(final Axis xAxis, final Axis yAxis, final EditableDataSet dataSet, final int index) {
super();
getStyleClass().add(STYLE_CLASS_SELECT_PATH);
// this.setPickOnBounds(true);
// setManaged(false);
final EditConstraints constraints = dataSet.getEditConstraints();
if (constraints == null) {
pseudoClassStateChanged(NOEDIT_PSEUDO_CLASS, false);
} else {
final boolean canChange = constraints.canChange(index);
if (!canChange) {
pseudoClassStateChanged(NOEDIT_PSEUDO_CLASS, true);
}
}
this.xAxis = xAxis;
this.yAxis = yAxis;
this.dataSet = dataSet;
this.xValue = dataSet.getX(index);
this.yValue = dataSet.getY(index);
this.setCenterX(getX()); // NOPMD by rstein on 13/06/19 14:14
this.setCenterY(getY()); // NOPMD by rstein on 13/06/19 14:14
this.setRadius(DEFAULT_MARKER_RADIUS);
final EventHandler dragOver = e -> {
// finished drag
isPointDragActive = false;
setCursor(Cursor.DEFAULT);
};
setOnMouseEntered(e -> setCursor(Cursor.OPEN_HAND));
addEventFilter(MouseDragEvent.MOUSE_DRAG_OVER, dragOver);
setOnMousePressed(startDragHandler(this));
// setOnMouseDragged(dragHandler(this));
setOnMouseReleased(dragOver);
setOnMouseDragOver(dragOver);
// this.setOnMouseExited(dragOver);
xAxis.addListener(evt -> this.setCenterX(getX()));
yAxis.addListener(evt -> this.setCenterY(getY()));
dataSet.addListener(e -> FXUtils.runFX(this::update));
}
public EditableDataSet getDataSet() {
return dataSet;
}
public int getIndex() {
for (int i = 0; i < dataSet.getDataCount(); i++) {
final double x0 = dataSet.getX(i);
final double y0 = dataSet.getY(i);
if (x0 == xValue && y0 == yValue) {
return i;
}
}
return -1;
}
public double getX() {
return xAxis.getDisplayPosition(xValue);
}
public double getY() {
return yAxis.getDisplayPosition(yValue);
}
public void update() {
setCenterX(getX());
setCenterY(getY());
}
public boolean delete() {
final EditConstraints constraints = dataSet.getEditConstraints();
if (constraints == null) {
dataSet.remove(getIndex());
return true;
}
if (constraints.canDelete(getIndex())) {
dataSet.remove(getIndex());
return true;
}
return false;
}
public void applyDrag(final double deltaX, final double deltaY) {
double nX = getX();
double nY = getY();
final EditConstraints constraints = dataSet.getEditConstraints();
if (constraints == null) {
if (allowShiftX.get()) {
nX += deltaX;
}
if (allowShiftY.get()) {
nY += deltaY;
}
final double x = xAxis.getValueForDisplay(nX);
final double y = yAxis.getValueForDisplay(nY);
dataSet.set(getIndex(), x, y);
xValue = x;
yValue = y;
return;
}
final boolean canChange = constraints.canChange(getIndex());
if (canChange && constraints.isXEditable() && allowShiftX.get()) {
nX += deltaX;
}
if (canChange && constraints.isYEditable() && allowShiftY.get()) {
nY += deltaY;
}
final double x = xAxis.getValueForDisplay(nX);
final double y = yAxis.getValueForDisplay(nY);
dataSet.set(getIndex(), x, y);
xValue = x;
yValue = y;
// update();
}
@Override
public String toString() {
return "selected index=" + getIndex();
}
}
protected void addPoint(final double x, final double y) {
if (!(getChart() instanceof XYChart)) {
return;
}
final XYChart xyChart = (XYChart) getChart();
// TODO: tidy up code and make it compatible with multiple renderer
// find data set closes to screen coordinate x & y
final Pane pane = getChart().getCanvasForeground();
final Bounds bounds = pane.getBoundsInLocal();
final Bounds screenBounds = pane.localToScreen(bounds);
final int x0 = (int) screenBounds.getMinX();
final int y0 = (int) screenBounds.getMinY();
final DataPoint dataPoint = findNearestDataPoint(getChart(), new Point2D(x - x0, y - y0));
if (dataPoint != null && (dataPoint.getDataSet() instanceof EditableDataSet)) {
final Axis xAxis = xyChart.getFirstAxis(Orientation.HORIZONTAL);
final Axis yAxis = xyChart.getFirstAxis(Orientation.VERTICAL);
final int index = dataPoint.getIndex();
final double newValX = xAxis.getValueForDisplay(x - x0);
final double newValY = yAxis.getValueForDisplay(y - y0);
final EditableDataSet ds = (EditableDataSet) (dataPoint.getDataSet());
final double oldValX = ds.getX(index);
if (oldValX <= newValX) {
ds.add(index, newValX, newValY);
} else {
ds.add(index - 1, newValX, newValY);
}
}
updateMarker();
}
protected DataPoint findNearestDataPoint(final Chart chart, final Point2D mouseLocation) {
if (!(chart instanceof XYChart)) {
return null;
}
final XYChart xyChart = (XYChart) chart;
// TODO: iterate through all axes, renderer and datasets
final double xValue = xyChart.getXAxis().getValueForDisplay(mouseLocation.getX());
DataPoint nearestDataPoint = null;
for (final DataPoint dataPoint : findNeighborPoints(xyChart, xValue)) {
if (getChart().getFirstAxis(Orientation.HORIZONTAL) != null) {
final double x = xyChart.getXAxis().getDisplayPosition(dataPoint.getX());
final double y = xyChart.getYAxis().getDisplayPosition(dataPoint.getY());
final Point2D displayPoint = new Point2D(x, y);
dataPoint.setDistanceFromMouse(displayPoint.distance(mouseLocation));
if ((nearestDataPoint == null
|| dataPoint.getDistanceFromMouse() < nearestDataPoint.getDistanceFromMouse())) {
nearestDataPoint = dataPoint;
}
}
}
return nearestDataPoint;
}
protected List findNeighborPoints(final XYChart chart, final double searchedX) {
final List points = new LinkedList<>();
for (final DataSet dataSet : chart.getAllDatasets()) {
final Pair neighborPoints = findNeighborPoints(dataSet, searchedX);
if (neighborPoints.getKey() != null) {
points.add(neighborPoints.getKey());
}
if (neighborPoints.getValue() != null) {
points.add(neighborPoints.getValue());
}
}
return points;
}
/**
* Handles series that have data sorted or not sorted with respect to X
* coordinate.
*
* @param dataSet data set
* @param searchedX X coordinates
* @return pair of neighbouring data points
*/
protected Pair findNeighborPoints(final DataSet dataSet, final double searchedX) {
int prevIndex = -1;
int nextIndex = -1;
double prevX = Double.MIN_VALUE;
double nextX = Double.MAX_VALUE;
for (int i = 0; i < dataSet.getDataCount(); i++) {
final double currentX = dataSet.getX(i);
if (currentX <= searchedX) {
if (prevX <= currentX) {
prevIndex = i;
prevX = currentX;
}
} else if (nextX > currentX) {
nextIndex = i;
nextX = currentX;
}
}
final DataPoint prevPoint = prevIndex == -1 ? null
: new DataPoint(getChart(), dataSet, prevIndex, dataSet.getX(prevIndex), dataSet.getY(prevIndex),
dataSet.getDataLabel(prevIndex));
final DataPoint nextPoint = nextIndex == -1 || nextIndex == prevIndex ? null
: new DataPoint(getChart(), dataSet, nextIndex, dataSet.getX(nextIndex), dataSet.getY(nextIndex),
dataSet.getDataLabel(nextIndex));
return new Pair<>(prevPoint, nextPoint);
}
protected void deleteAllMarkedPoints() {
for (final EditableDataSet dataSet : markedPoints.keySet()) {
final ConcurrentHashMap dataPoints = markedPoints.get(dataSet);
for (final Integer dataPointIndex : dataPoints.keySet()) {
final SelectedDataPoint dataPoint = dataPoints.get(dataPointIndex);
if (dataPoint.delete()) {
dataPoints.remove(dataPointIndex);
}
}
}
updateMarker();
}
protected class PointEditionPopup extends Popup {
private final Button addPoint = new Button("add");
private final Button deletePoint = new Button("delete");
private final Button deletePoints = new Button("delete all");
public PointEditionPopup() {
super();
setAutoFix(true);
setAutoHide(true);
setHideOnEscape(true);
setAutoHide(true);
getContent().add(initContent());
addPoint.setOnAction(evt -> {
final double x = getX();
final double y = getY();
addPoint(x, y);
});
deletePoints.setOnAction(evt -> deleteAllMarkedPoints());
}
private VBox initContent() {
final VBox pane = new VBox();
pane.getChildren().add(new Label("popup"));
pane.getChildren().add(addPoint);
pane.getChildren().add(deletePoint);
pane.getChildren().add(deletePoints);
return pane;
}
public void showPopup(final MouseEvent event, final SelectedDataPoint selectedPoint) {
// System.err.println("show popup = " + selectedPoint);
deletePoints.setDisable(markerPane.getChildren().isEmpty());
if (selectedPoint == null) {
deletePoint.setDisable(true);
} else {
deletePoint.setDisable(false);
deletePoint.setOnAction(evt -> {
if (selectedPoint.delete()) {
markedPoints.get(selectedPoint.getDataSet()).remove(selectedPoint.getIndex());
}
updateMarker();
});
}
show(getChart().getScene().getWindow(), event.getScreenX(), event.getScreenY());
}
}
public class DataPoint {
private final Chart chart;
private final double x;
private final double y;
private final String label;
private double distanceFromMouse;
private final DataSet dataSet;
private final int index;
public DataPoint(final Chart chart, final DataSet dataSet, final int index, final double x, final double y,
final String label) {
this.chart = chart;
this.dataSet = dataSet;
this.index = index;
this.x = x;
this.y = y;
this.label = label;
}
public Chart getChart() {
return chart;
}
public DataSet getDataSet() {
return dataSet;
}
public int getIndex() {
return index;
}
public double getX() {
return x;
}
public double getY() {
return y;
}
public String getLabel() {
return label;
}
public void setDistanceFromMouse(final double distance) {
distanceFromMouse = distance;
}
public double getDistanceFromMouse() {
return distanceFromMouse;
}
@Override
public String toString() {
return "DataSet= '" + dataSet.getName() + "' index=" + index;
}
}
}
