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Financial Charts - realtime processing, re-sample live demos, improve…
…d renderers, navigation etc. (#326) * Financial Charts - real-time processing, re-sample live demos, improved renderers. * Value and range indicator testing for financial charts.
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chartfx-chart/src/main/java/de/gsi/chart/plugins/YWatchValueIndicator.java
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| /** | ||
| * Copyright (c) 2017 European Organisation for Nuclear Research (CERN), All Rights Reserved. | ||
| */ | ||
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| package de.gsi.chart.plugins; | ||
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| import javafx.geometry.BoundingBox; | ||
| import javafx.geometry.Bounds; | ||
| import javafx.geometry.Point2D; | ||
| import javafx.scene.input.MouseEvent; | ||
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| import de.gsi.chart.axes.Axis; | ||
| import de.gsi.chart.ui.geometry.Side; | ||
| import de.gsi.dataset.event.EventSource; | ||
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| /** | ||
| * A horizontal line drawn on the plot area, indicating specified Y value with the {@link #textProperty() text | ||
| * label} describing the value inside the Y-Axis marker. | ||
| * <p> | ||
| * Style Classes (from least to most specific): | ||
| * <ul> | ||
| * <li><b>Marker:</b> {@code value-watch-indicator-marker, {id}-value-watch-indicator-marker, {id}-value-watch-indicator-marker[index]}</li> | ||
| * <li><b>Label:</b> {@code value-watch-indicator-label, {id}-value-watch-indicator-label, {id}-value-watch-indicator-label[index]}</li> | ||
| * <li><b>Line:</b> {@code value-watch-indicator-line, {id}-value-watch-indicator-line, {id}-value-watch-indicator-line[index]}</li> | ||
| * </ul> | ||
| * where {@code [index]} corresponds to the index (zero based) of this indicator instance added to the | ||
| * {@code XYChartPane}. For example class {@code y-value-indicator-label1} can be used to style label of the second | ||
| * instance of this indicator added to the chart pane. | ||
| * | ||
| * @author mhrabia | ||
| * @author afischer (modified) | ||
| */ | ||
| public class YWatchValueIndicator extends AbstractSingleValueIndicator implements EventSource, ValueIndicator { | ||
| protected static final String STYLE_CLASS_LABEL = "value-watch-indicator-label"; | ||
| protected static final String STYLE_CLASS_LINE = "value-watch-indicator-line"; | ||
| protected static final String STYLE_CLASS_MARKER = "value-watch-indicator-marker"; | ||
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| protected final String valueFormat; | ||
| protected String id; | ||
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| /** | ||
| * Creates a new instance indicating given Y value belonging to the specified {@code yAxis}. | ||
| * | ||
| * @param axis the axis this indicator is associated with | ||
| * @param valueFormat a value string format for marker visualization | ||
| * @param value a value to be marked | ||
| */ | ||
| public YWatchValueIndicator(final Axis axis, final String valueFormat, final double value) { | ||
| super(axis, value, String.format(valueFormat, value)); | ||
| this.valueFormat = valueFormat; | ||
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| // marker is visible always for this indicator | ||
| triangle.visibleProperty().unbind(); | ||
| triangle.visibleProperty().set(true); | ||
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| pickLine.setOnMouseDragged(this::handleDragMouseEvent); | ||
| triangle.setOnMouseDragged(this::handleDragMouseEvent); | ||
| label.setOnMouseDragged(this::handleDragMouseEvent); | ||
| } | ||
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| /** | ||
| * Creates a new instance for the specified {@code yAxis}. | ||
| * The Y value is updated by listeners. | ||
| * | ||
| * @param axis the axis this indicator is associated with | ||
| * @param valueFormat a value string format for marker visualization | ||
| */ | ||
| public YWatchValueIndicator(final Axis axis, final String valueFormat) { | ||
| this(axis, valueFormat, 0.0); | ||
| } | ||
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| /** | ||
| * Set the text and value for this indicator marker. | ||
| * | ||
| * @param value Update marker label and its Y Axis position by this double value. | ||
| */ | ||
| public void setMarkerValue(final double value) { | ||
| setText(String.format(valueFormat, value)); | ||
| setValue(value); | ||
| } | ||
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| /** | ||
| * Set visibility of the horizontal line | ||
| * | ||
| * @param lineVisible line visibility boolean | ||
| */ | ||
| public void setLineVisible(final boolean lineVisible) { | ||
| line.setVisible(lineVisible); | ||
| pickLine.setVisible(lineVisible); | ||
| } | ||
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| /** | ||
| * Unique identification of the indicator | ||
| * | ||
| * @return id unique ID | ||
| */ | ||
| public String getId() { | ||
| return id; | ||
| } | ||
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| /** | ||
| * Unique identification of the indicator | ||
| * | ||
| * @param id unique ID | ||
| */ | ||
| public void setId(String id) { | ||
| this.id = id; | ||
| } | ||
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| protected void handleDragMouseEvent(final MouseEvent mouseEvent) { | ||
| Point2D c = getChart().getPlotArea().sceneToLocal(mouseEvent.getSceneX(), mouseEvent.getSceneY()); | ||
| final double yPosData = getAxis().getValueForDisplay(c.getY() - dragDelta.y); | ||
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| if (getAxis().isValueOnAxis(yPosData)) { | ||
| setMarkerValue(yPosData); | ||
| } | ||
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| mouseEvent.consume(); | ||
| } | ||
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| @Override | ||
| public void layoutChildren() { | ||
| if (getChart() == null) { | ||
| return; | ||
| } | ||
| final Bounds plotAreaBounds = getChart().getCanvas().getBoundsInLocal(); | ||
| final double minX = plotAreaBounds.getMinX(); | ||
| final double maxX = plotAreaBounds.getMaxX(); | ||
| final double minY = plotAreaBounds.getMinY(); | ||
| final double maxY = plotAreaBounds.getMaxY(); | ||
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| final double yPos = minY + getAxis().getDisplayPosition(getValue()); | ||
| final double axisPos; | ||
| final boolean isRightSide = getAxis().getSide().equals(Side.RIGHT); | ||
| if (isRightSide) { | ||
| axisPos = getChart().getPlotForeground().sceneToLocal(getAxis().getCanvas().localToScene(0, 0)).getX() + 2; | ||
| triangle.getPoints().setAll(0.0, 0.0, 10.0, 10.0, 50.0, 10.0, 50.0, -10.0, 10.0, -10.0); | ||
| } else { | ||
| axisPos = getChart().getPlotForeground().sceneToLocal(getAxis().getCanvas().localToScene(getAxis().getWidth(), 0)).getX() - 2; | ||
| triangle.getPoints().setAll(0.0, 0.0, -10.0, 10.0, -50.0, 10.0, -50.0, -10.0, -10.0, -10.0); | ||
| } | ||
| final double yPosGlobal = getChart().getPlotForeground().sceneToLocal(getChart().getCanvas().localToScene(0, yPos)).getY(); | ||
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| if (yPos < minY || yPos > maxY) { | ||
| getChart().getPlotForeground().getChildren().remove(triangle); | ||
| getChart().getPlotForeground().getChildren().remove(label); | ||
| getChartChildren().remove(line); | ||
| getChartChildren().remove(pickLine); | ||
| } else { | ||
| layoutLine(minX, yPos, maxX, yPos); | ||
| layoutMarker(axisPos, yPosGlobal, minX, yPos); | ||
| layoutWatchLabel(new BoundingBox(minX, yPos, maxX - minX, 0), axisPos, isRightSide); | ||
| } | ||
| } | ||
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| @Override | ||
| protected void layoutLine(double startX, double startY, double endX, double endY) { | ||
| if (!line.isVisible()) { | ||
| return; | ||
| } | ||
| super.layoutLine(startX, startY, endX, endY); | ||
| } | ||
|
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| protected void layoutWatchLabel(final Bounds bounds, double axisPos, boolean isRightSide) { | ||
| if (label.getText() == null || label.getText().isEmpty()) { | ||
| getChartChildren().remove(label); | ||
| return; | ||
| } | ||
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| double xPos = bounds.getMinX(); | ||
| double yPos = bounds.getMinY(); | ||
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| final double width = label.prefWidth(-1); | ||
| final double height = label.prefHeight(width); | ||
| final double baseLine = label.getBaselineOffset(); | ||
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| double padding = isRightSide ? 0 : width + label.getPadding().getRight(); | ||
| label.resizeRelocate(xPos + axisPos - padding, yPos + baseLine, width, height); | ||
| label.toFront(); | ||
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| if (!getChart().getPlotForeground().getChildren().contains(label)) { | ||
| getChart().getPlotForeground().getChildren().add(label); | ||
| } | ||
| } | ||
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| @Override | ||
| public void updateStyleClass() { | ||
| setStyleClasses(label, getId() + "-", STYLE_CLASS_LABEL); | ||
| setStyleClasses(line, getId() + "-", STYLE_CLASS_LINE); | ||
| setStyleClasses(triangle, getId() + "-", STYLE_CLASS_MARKER); | ||
| } | ||
| } |
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