Java tutorial
/* * Copyright (C) 2016 Bruce Beisel * * This program is free software: you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation, either version 3 of the License, or * (at your option) any later version. * * This program 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 for more details. * * You should have received a copy of the GNU General Public License * along with this program. If not, see <http://www.gnu.org/licenses/>. */ package com.bdb.weather.display.current; import java.awt.Color; import java.awt.Font; import java.awt.GradientPaint; import java.text.DecimalFormat; import javafx.beans.property.SimpleStringProperty; import javafx.beans.property.StringProperty; import javafx.geometry.Pos; import javafx.scene.control.Label; import javafx.scene.layout.BorderPane; import org.jfree.chart.JFreeChart; import org.jfree.chart.fx.ChartViewer; import org.jfree.chart.plot.dial.DialBackground; import org.jfree.chart.plot.dial.DialCap; import org.jfree.chart.plot.dial.DialPlot; import org.jfree.chart.plot.dial.DialPointer; import org.jfree.chart.plot.dial.DialTextAnnotation; import org.jfree.chart.plot.dial.DialValueIndicator; import org.jfree.chart.plot.dial.StandardDialFrame; import org.jfree.chart.plot.dial.StandardDialRange; import org.jfree.chart.plot.dial.StandardDialScale; import org.jfree.data.general.DefaultValueDataset; import com.bdb.weather.common.measurement.Humidity; import com.bdb.weather.common.WeatherTrend; /** * Gauge for displaying humidity. * * @author Bruce * */ public class Hygrometer extends BorderPane { private final DefaultValueDataset humidityDataset = new DefaultValueDataset(50.0); private final DialPlot humidityPlot = new DialPlot(humidityDataset); private StandardDialRange range; private final DialTextAnnotation trendAnnotation = new DialTextAnnotation("Trend"); private final Label title = new Label(); private final StringProperty titleProperty = new SimpleStringProperty(); public Hygrometer() { this(""); } /** * Constructor. * * @param titleString The title to add to the panel that contains the gauge */ public Hygrometer(String titleString) { this.setPrefSize(200.0, 200.0); ChartViewer chartViewer = createChartElements(); this.setTop(title); this.setCenter(chartViewer); BorderPane.setAlignment(title, Pos.CENTER); title.textProperty().bind(titleProperty); setTitle(titleString); } private ChartViewer createChartElements() { humidityPlot.addLayer( new DialBackground(new GradientPaint(0.0f, 0.0f, Color.LIGHT_GRAY, 100.0f, 0.0f, Color.blue))); StandardDialScale scale = new StandardDialScale(Humidity.MIN_HUMIDITY.get(), Humidity.MAX_HUMIDITY.get(), 240.0, -300.0, 10.0, 9); scale.setTickLabelFont(scale.getTickLabelFont().deriveFont(14.0F).deriveFont(Font.PLAIN)); scale.setTickRadius(.9); scale.setTickLabelFormatter(new DecimalFormat("#")); scale.setTickLabelOffset(.2); scale.setTickLabelPaint(Color.BLACK); humidityPlot.addScale(0, scale); humidityPlot.setDialFrame(new StandardDialFrame()); DialValueIndicator valueInd = new DialValueIndicator(0); valueInd.setNumberFormat(new DecimalFormat("# '%rH'")); Color c = new Color(255, 255, 255, 0); valueInd.setBackgroundPaint(c); valueInd.setOutlinePaint(c); valueInd.setPaint(Color.cyan); humidityPlot.addLayer(valueInd); double angle = valueInd.getAngle(); double radius = valueInd.getRadius(); trendAnnotation.setPaint(Color.cyan); trendAnnotation.setAngle(angle); trendAnnotation.setRadius(radius + .1); humidityPlot.addLayer(trendAnnotation); DialPointer.Pointer pointer = new DialPointer.Pointer(0); humidityPlot.addPointer(pointer); DialCap cap = new DialCap(); cap.setRadius(cap.getRadius() * 1.5); humidityPlot.setCap(cap); range = new StandardDialRange(Humidity.MIN_HUMIDITY.get(), Humidity.MAX_HUMIDITY.get(), Color.BLACK); range.setInnerRadius(.40); range.setOuterRadius(.45); range.setScaleIndex(0); humidityPlot.addLayer(range); JFreeChart chart = new JFreeChart(humidityPlot); chart.setBackgroundPaint(Color.GRAY); ChartViewer chartViewer = new ChartViewer(chart); //chartViewer.setMinHeight(100); //chartViewer.setMinWidth(100); //chartViewer.setMaxHeight(400); //chartViewer.setMaxWidth(400); //chartViewer.setBackground(Color.GRAY); return chartViewer; } public String getTitle() { return titleProperty.getValue(); } public final void setTitle(String title) { titleProperty.setValue(title); } public StringProperty titleProperty() { return titleProperty; } /** * Load the current value and the min and max values of the day. * * @param current The current value * @param min The minimum value of the day * @param max The maximum value of the day * @param delta The amount the pressure has changed over the last hour * @param trend The current trend of the barometer */ public void loadData(Humidity current, Humidity min, Humidity max, Humidity delta, WeatherTrend trend) { humidityDataset.setValue(current.get()); if (min != null && max != null) { if (!min.equals(max)) { humidityPlot.addLayer(range); range.setLowerBound(min.get()); range.setUpperBound(max.get()); } else if (humidityPlot.getLayerIndex(range) >= 0) humidityPlot.removeLayer(range); } if (trend == WeatherTrend.STEADY) trendAnnotation.setLabel(WeatherTrend.STEADY.toString()); else { String trendText = trend.getSymbol() + delta + "/hr"; trendAnnotation.setLabel(trendText); } } }