Hi everyone,
i'am a newbie in programming with JForex-API and i try to get a snapshot from a chart, so my strategy can send an email with this snapshot/image. But when i try to get the image from the chart i get the error "Width (0) and height (0) cannot be <= 0". What i'am doing wrong? Can you help me pls?
Here is my simple Strategy which tries to save the chart-snapshot to a file on my local disc (for testing) and after this the error in my eclipseconsole:
import java.awt.Dimension;
import java.io.File;
import javax.imageio.ImageIO;
import javax.swing.JFrame;
import javax.swing.JPanel;
import com.dukascopy.api.*;
import com.dukascopy.api.util.*;
import com.dukascopy.api.feed.IFeedDescriptor;
import com.dukascopy.api.feed.util.*;
public class MyStrategy implements IStrategy {
private IChart chart;
private IContext context;
private IConsole console;
@Override
public void onStart(IContext context) throws JFException {
this.context = context;
this.console = context.getConsole();
IFeedDescriptor feedDescriptor = new TimePeriodAggregationFeedDescriptor(Instrument.EURUSD, Period.TEN_SECS, OfferSide.BID);
chart = context.openChart(feedDescriptor);
System.out.println("Chart's feed: " + chart.getFeedDescriptor()); //will print all feed's parameters
System.out.println("Chart's instrument: " + chart.getFeedDescriptor().getInstrument()); //retrieve a specific feed parameter
//wait until the feed gets loaded
try {
Thread.sleep(5000);
} catch (InterruptedException e1) {
e1.printStackTrace(console.getErr());
}
System.out.println("Chart drawable coordinates: min(" + DateUtils.format(chart.getMinTime()) + "," + chart.getMinPrice() +
"); max(" + DateUtils.format(chart.getMaxTime()) + "," + chart.getMaxPrice() + ")");
try {
File file = new File(context.getFilesDir().getPath() + File.separator + "ChartImage.png");
ImageIO.write(chart.getImage(), "png", file);
print("chart image saved in: " + file.getAbsolutePath());
} catch (Exception e) {
e.printStackTrace(console.getErr());
}
}
@Override
public void onStop() throws JFException {
context.closeChart(chart);
}
private void print(Object o){
console.getOut().println(o);
}
private void print(String message, Object... args){
print(String.format(message,args));
}
@Override
public void onTick(Instrument instrument, ITick tick) throws JFException {}
@Override
public void onBar(Instrument instrument, Period period, IBar askBar, IBar bidBar) throws JFException {}
@Override
public void onMessage(IMessage message) throws JFException {}
@Override
public void onAccount(IAccount account) throws JFException {}
}
2015-01-07 10:26:34.315 INFO Main - Verbindungsaufbau zum Dukascopyserver...
2015-01-07 10:26:35.104 INFO AuthorizationClient - Selecting the best server...
2015-01-07 10:26:36.610 INFO AuthorizationClient - retry count = 1, properties request time = 2015-01-07 10:26:36
2015-01-07 10:26:37.013 INFO AuthorizationClient - retry count = 1, properties response time = 2015-01-07 10:26:37
2015-01-07 10:26:37.064 INFO ClientProtocolHandler - TcpNoDelay=false
2015-01-07 10:26:37.447 INFO ClientConnector - Primary connect successfull, primarySession is [MinaIoSessionWrapper [session=(SOCKET, R: d-ja-gva-91-142.dukascopy.com/194.8.15.142:10443, L: /192.168.3.148:51533, S: d-ja-gva-91-142.dukascopy.com/194.8.15.142:10443)]], address is [d-ja-gva-91-142.dukascopy.com/194.8.15.142:10443]
2015-01-07 10:26:37.540 WARN WLabelData - White Label Image is not received
2015-01-07 10:26:38.133 INFO GreedClientAuthorizationProvider - !!!:Thread[ClientConnector,5,main]
2015-01-07 10:26:38.421 INFO DCClientImpl - Connected
2015-01-07 10:26:38.541 INFO Main - Subscribing instruments...
2015-01-07 10:26:38.544 INFO Main - Instruments subscribed!
2015-01-07 10:26:39.189 INFO ClientConnector - Child session opened for [d-ja-gva-91-142.dukascopy.com/194.8.15.142:10443]
Chart's feed: FeedDescriptor [dataType=TIME_PERIOD_AGGREGATION, instrument=EUR/USD, offerSide=Bid, period=10 Secs, filter=NO_FILTER, ]
Chart's instrument: EUR/USD
Chart drawable coordinates: min(1969-12-31 23:59:59:999,1.0); max(1969-12-31 23:59:59:999,2.0)
java.lang.IllegalArgumentException: Width (0) and height (0) cannot be <= 0
at java.awt.image.DirectColorModel.createCompatibleWritableRaster(Unknown Source)
at java.awt.image.BufferedImage.<init>(Unknown Source)
at com.dukascopy.charts.utils.SnapshotHelper.writeToImage(SnapshotHelper.java:59)
at com.dukascopy.charts.chartbuilder.ChartController.getWorkspaceImage(ChartController.java:570)
at com.dukascopy.charts.chartbuilder.IChartWrapper.getImage(IChartWrapper.java:891)
at com.dukascopy.charts.wrapper.DelegatableChartWrapper.getImage(DelegatableChartWrapper.java:530)
at PerformForexSignals.kannweg.onStart(kannweg.java:45)
at com.dukascopy.api.impl.execution.TaskStart.call(TaskStart.java:27)
at com.dukascopy.api.impl.execution.TaskStart.call(TaskStart.java:13)
at com.dukascopy.api.impl.connect.JFRunnableProcessor.onStart(JFRunnableProcessor.java:127)
at com.dukascopy.api.impl.connect.JForexTaskManager$1.call(JForexTaskManager.java:663)
at com.dukascopy.api.impl.connect.JForexTaskManager$1.call(JForexTaskManager.java:630)
at com.dukascopy.api.impl.execution.TaskCustom.call(TaskCustom.java:34)
at java.util.concurrent.FutureTask.run(Unknown Source)
at com.dukascopy.api.impl.execution.ScienceThreadPoolExecutor$Worker.runTask(ScienceThreadPoolExecutor.java:904)
at com.dukascopy.api.impl.execution.ScienceThreadPoolExecutor$Worker.run(ScienceThreadPoolExecutor.java:926)
at java.lang.Thread.run(Unknown Source)
