kopia lustrzana https://github.com/SP8EBC/MeteoSystem
363 wiersze
13 KiB
Java
363 wiersze
13 KiB
Java
package cc.pogoda.mobile.meteosystem.activity;
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import android.content.res.Configuration;
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import android.content.res.Resources;
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import android.graphics.Color;
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import android.graphics.Typeface;
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import android.os.Bundle;
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import android.widget.SeekBar;
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import android.widget.TextView;
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import androidx.appcompat.app.AppCompatActivity;
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import com.github.mikephil.charting.charts.LineChart;
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import com.github.mikephil.charting.components.XAxis;
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import com.github.mikephil.charting.components.YAxis;
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import com.github.mikephil.charting.data.Entry;
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import com.github.mikephil.charting.data.LineData;
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import com.github.mikephil.charting.data.LineDataSet;
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import com.github.mikephil.charting.utils.ColorTemplate;
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import org.threeten.bp.LocalDateTime;
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import org.threeten.bp.ZoneId;
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import org.threeten.bp.ZoneOffset;
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import org.threeten.bp.ZonedDateTime;
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import org.threeten.bp.format.DateTimeFormatter;
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import org.tinylog.Logger;
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import java.util.ArrayList;
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import java.util.Locale;
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import cc.pogoda.mobile.meteosystem.R;
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import cc.pogoda.mobile.meteosystem.activity.handler.PlotClickEvent;
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import cc.pogoda.mobile.meteosystem.config.AppConfiguration;
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import cc.pogoda.mobile.meteosystem.dao.LastStationDataDao;
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import cc.pogoda.mobile.meteosystem.dao.StationDataDao;
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import cc.pogoda.mobile.meteosystem.type.StationDetailsPlot;
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import cc.pogoda.mobile.meteosystem.type.WeatherStation;
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import cc.pogoda.mobile.meteosystem.type.web.ListOfStationData;
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import cc.pogoda.mobile.meteosystem.type.web.StationData;
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public class StationDetailsPlotsHumidity extends AppCompatActivity implements SeekBar.OnSeekBarChangeListener, StationDetailsPlot {
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private LineChart chart = null;
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private SeekBar seekBarX = null;
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private TextView textViewTimestamp = null;
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private TextView textViewHumidity = null;
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private int dataLn = -2;
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private WeatherStation station;
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private final LastStationDataDao lastStationDataDao;
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private final StationDataDao stationDataDao;
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private PlotClickEvent plotClickEvent;
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private ArrayList<Entry> valuesHumidity;
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private static final int twelve_hours = 3600 * 12;
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private static final int twenty_four_hours = 3600 * 24;
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private static final int three_days = 3600 * 24 * 3;
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private static class ValueFormatter extends com.github.mikephil.charting.formatter.ValueFormatter {
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@Override
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public String getFormattedValue(float value) {
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long millis = (long) value;
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// the web service and the plot always stores the entries as UTC. So first convert epoch timestamp to the LocalDateTime
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LocalDateTime utcDateTime = LocalDateTime.ofEpochSecond(millis / 1000, 0, ZoneOffset.UTC);
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// and then shift to the user timezone for convinient display
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ZonedDateTime localDateTime = utcDateTime.atZone(ZoneOffset.UTC).withZoneSameInstant(ZoneId.systemDefault());
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DateTimeFormatter fmt = DateTimeFormatter.ofPattern("HH:mm");
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/* format only the time to keep X axis clean */
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return fmt.format(localDateTime);
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}
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}
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public StationDetailsPlotsHumidity() {
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lastStationDataDao = new LastStationDataDao();
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stationDataDao = new StationDataDao();
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plotClickEvent = new PlotClickEvent(this);
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}
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@Override
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public void onProgressChanged(SeekBar seekBar, int i, boolean b) {
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// first and last index to display on plot
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int first_index, last_index = 0;
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// display only 20% of the set at once
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int window_size = (int) (valuesHumidity.size() * 0.2f);
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last_index = (int) ((seekBarX.getProgress() / 100.0f) * valuesHumidity.size());
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first_index = last_index - window_size;
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if (first_index < 0) {
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first_index = 0;
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last_index = window_size;
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}
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this.setData(first_index, last_index, false);
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// redraw
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chart.invalidate();
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}
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@Override
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public void onStartTrackingTouch(SeekBar seekBar) {
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}
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@Override
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public void onStopTrackingTouch(SeekBar seekBar) {
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}
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@Override
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public void updateLabels(String date, Entry entry) {
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int humidity = 0;
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// get a timestamp from the entry
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long timestamp = (long) entry.getX();
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// look for the windspeed coresponding to that timestamp
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for (Entry e : valuesHumidity) {
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// if this is what we are looking for
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if (e.getX() == entry.getX()) {
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humidity = (int) e.getY();
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}
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}
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if (this.textViewHumidity != null && this.textViewTimestamp != null) {
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this.textViewTimestamp.setText(date);
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this.textViewHumidity.setText(getText(R.string.humidity) + String.format(": %d%%", humidity));
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}
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else {
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return;
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}
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}
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@Override
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protected void onCreate(Bundle savedInstanceState) {
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super.onCreate(savedInstanceState);
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// get data length for this plot
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dataLn = (int)getIntent().getExtras().get("data_ln");
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if (AppConfiguration.locale != null && !AppConfiguration.locale.equals("default") ) {
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Logger.debug("[AppConfiguration.locale = " + AppConfiguration.locale + "]");
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Locale locale = new Locale(AppConfiguration.locale);
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Locale.setDefault(locale);
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Resources resources = this.getResources();
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Configuration config = resources.getConfiguration();
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config.setLocale(locale);
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resources.updateConfiguration(config, resources.getDisplayMetrics());
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}
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setContentView(R.layout.activity_station_details_plots);
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station = (WeatherStation) getIntent().getSerializableExtra("station");
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// download data from web service
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this.downloadDataFromWebservice();
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Typeface tfLight = Typeface.MONOSPACE;
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setTitle(R.string.humidity_plot);
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textViewTimestamp = findViewById(R.id.textViewPlotsWindTimestamp);
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textViewHumidity = findViewById(R.id.textViewPlotsWindMean);
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seekBarX = findViewById(R.id.seekBarPlotsWind);
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chart = findViewById(R.id.chartPlotsWind);
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// enable scaling and dragging
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chart.setDragEnabled(true);
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chart.setScaleEnabled(true);
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chart.setDrawGridBackground(false);
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chart.setHighlightPerDragEnabled(true);
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// set an alternative background color
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chart.setBackgroundColor(Color.WHITE);
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chart.setViewPortOffsets(0f, 0f, 0f, 0f);
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// add data
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seekBarX.setProgress(100);
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seekBarX.setOnSeekBarChangeListener(this);
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XAxis xAxis = chart.getXAxis();
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xAxis.setPosition(XAxis.XAxisPosition.BOTTOM_INSIDE);
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xAxis.setTypeface(tfLight);
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xAxis.setTextSize(10f);
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xAxis.setTextColor(Color.WHITE);
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xAxis.setDrawAxisLine(false);
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xAxis.setDrawGridLines(true);
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xAxis.setTextColor(Color.rgb(255, 192, 56));
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xAxis.setCenterAxisLabels(true);
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xAxis.setGranularity(1f); // one hour
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xAxis.setValueFormatter(new StationDetailsPlotsHumidity.ValueFormatter());
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xAxis.setLabelRotationAngle(45.0f);
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YAxis leftAxis = chart.getAxisLeft();
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leftAxis.setPosition(YAxis.YAxisLabelPosition.INSIDE_CHART);
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leftAxis.setTypeface(tfLight);
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leftAxis.setTextColor(ColorTemplate.getHoloBlue());
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leftAxis.setDrawGridLines(true);
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leftAxis.setGranularityEnabled(true);
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leftAxis.setAxisMinimum(0.0f);
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leftAxis.setAxisMaximum(100.0f);
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leftAxis.setYOffset(0.0f);
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leftAxis.setTextColor(R.color.design_default_color_primary_dark);
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leftAxis.setTextSize(123.0f);
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YAxis rightAxis = chart.getAxisRight();
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rightAxis.setEnabled(false);
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int lastDataIndex = valuesHumidity.size() - 1;
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// display only the last data (20% of newest data)
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this.setData((long) (0.8 * (lastDataIndex)), lastDataIndex, false);
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// set bar to maximum value
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seekBarX.setProgress(100);
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}
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/**
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* Downloads the data from the web service and stores it as entries ready to be displayed on the
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* plot. Web Service gives the data with the epoch timestamp in second resolution, but the plot
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* shows the data in millisecond resolution
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*/
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private void downloadDataFromWebservice() {
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ListOfStationData data = null;
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// utc time
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ZonedDateTime utcTime = ZonedDateTime.now().withZoneSameInstant(ZoneId.of("UTC"));
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// utc timestamp
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long utcTimestamp = utcTime.toEpochSecond();
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if (this.dataLn < 0 || this.dataLn > 2) {
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// last 2000 points of data, regardless the timescale
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data = lastStationDataDao.getLastStationData(station.getSystemName());
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}
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else if (dataLn == 0) {
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// 12 hours
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data = stationDataDao.getLastStationData(station.getSystemName(), utcTimestamp - twelve_hours, utcTimestamp);
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}
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else if (dataLn == 1) {
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// 24 hours
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data = stationDataDao.getLastStationData(station.getSystemName(), utcTimestamp - twenty_four_hours, utcTimestamp);
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}
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else if (dataLn == 2) {
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// 3 days
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data = stationDataDao.getLastStationData(station.getSystemName(), utcTimestamp - three_days, utcTimestamp);
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}
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valuesHumidity = new ArrayList<>();
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if (data != null) {
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for (StationData d : data.list_of_station_data) {
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valuesHumidity.add(new Entry(d.epoch * 1000, d.humidity));
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}
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}
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}
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/**
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*
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* @param from
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* @param to
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* @param index_or_timestamp if set to false 'to' and 'from' are treated as an index, if they are set
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* to true this method will use it as epoch timestamps (in seconds)
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*/
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public void setData(long from, long to, boolean index_or_timestamp) {
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// if only some part of input set needs to be displayed use this intermediate buffer
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ArrayList<Entry> narrowed_set, narrowed_set_gusts;
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// data set to be displayed on the plot
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LineDataSet set_humidity;
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if (valuesHumidity.size() > 0) {
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if (from != 0 || to != 0) {
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// if 'from' and 'to' are the index values
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if (!index_or_timestamp) {
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// make a sublist
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narrowed_set = new ArrayList<>(valuesHumidity.subList((int)from, (int)to));
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}
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else {
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// get first and last entry from the set
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Entry first = valuesHumidity.get(0);
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Entry last = valuesHumidity.get(valuesHumidity.size() - 1 );
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// check if 'from' and 'to' timestamp epoch covers any data from the input set
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if ( (long)first.getX() > (to * 1000) ||
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(long)last.getX() < (from * 1000)) {
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// if there is no data to display exit from an function
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return;
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}
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else {
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narrowed_set = new ArrayList<>();
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narrowed_set_gusts = new ArrayList<>();
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// if not copy matching elements to narrowed set
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valuesHumidity.forEach((Entry e) -> {
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if (e.getX() > (from * 1000) &&
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e.getX() < (to * 1000)) {
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narrowed_set.add(e);
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}
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});
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}
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}
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// and generate the set from it
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set_humidity = new LineDataSet(narrowed_set, "Humidity");
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}
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else {
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// use 'values_wind_speed' directly as a whole
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set_humidity = new LineDataSet(valuesHumidity, "Humidity");
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}
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// create a dataset and give it a type
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set_humidity.setAxisDependency(YAxis.AxisDependency.LEFT);
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set_humidity.setColor(ColorTemplate.getHoloBlue());
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set_humidity.setValueTextColor(ColorTemplate.getHoloBlue());
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set_humidity.setLineWidth(3.5f);
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set_humidity.setDrawCircles(true);
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set_humidity.setDrawValues(true);
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set_humidity.setFillAlpha(65);
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set_humidity.setFillColor(ColorTemplate.getHoloBlue());
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set_humidity.setHighLightColor(Color.rgb(244, 117, 117));
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set_humidity.setDrawCircleHole(false);
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// create a data object with the data sets
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LineData line_data = new LineData();
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line_data.addDataSet(set_humidity);
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line_data.setValueTextColor(Color.WHITE);
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line_data.setValueTextSize(9f);
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// set data
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chart.setData(line_data);
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chart.setDoubleTapToZoomEnabled(false);
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chart.setOnChartValueSelectedListener(plotClickEvent);
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}
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}
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}
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