PNG export feature using the GCViewer GUI

src/main/java/com/tagtraum/perf/gcviewer/GCViewer.java

@@ -1,6 +1,7 @@
 package com.tagtraum.perf.gcviewer;
 
 import java.io.File;
+import java.io.FileOutputStream;
 import java.io.IOException;
 import java.util.logging.Level;
 import java.util.logging.Logger;
@@ -82,7 +83,7 @@ private void exportType(GCModel model, String summaryFilePath, DataWriterType ty
 
     private void renderChart(GCModel model, String chartFilePath) throws IOException {
         SimpleChartRenderer renderer = new SimpleChartRenderer();
-        renderer.render(model, chartFilePath);
+        renderer.render(model, new FileOutputStream(new File(chartFilePath)));
     }
 
 	private static void usage() {

src/main/java/com/tagtraum/perf/gcviewer/SimpleChartRenderer.java

@@ -1,19 +1,22 @@
 package com.tagtraum.perf.gcviewer;
 
-import com.tagtraum.perf.gcviewer.model.GCModel;
-
-import javax.imageio.ImageIO;
-import javax.swing.*;
-import java.awt.*;
+import java.awt.Color;
+import java.awt.Dimension;
+import java.awt.Graphics2D;
 import java.awt.image.BufferedImage;
-import java.io.File;
+import java.io.FileOutputStream;
 import java.io.IOException;
 import java.util.logging.Logger;
 
+import javax.imageio.ImageIO;
+import javax.swing.JScrollPane;
+
+import com.tagtraum.perf.gcviewer.model.GCModel;
+
 public class SimpleChartRenderer {
     private static final Logger LOGGER = Logger.getLogger(SimpleChartRenderer.class.getName());
 
-    public void render(GCModel model, String chartFilePath) throws IOException {
+    public void render(GCModel model, FileOutputStream outputStream) throws IOException {
         GCPreferences gcPreferences = new GCPreferences();
         gcPreferences.load();
 
@@ -39,6 +42,7 @@ public void render(GCModel model, String chartFilePath) throws IOException {
 
         pane.paint(graphics);
 
-        ImageIO.write(image, "png", new File(chartFilePath));
+        ImageIO.write(image, "png", outputStream);
+        outputStream.close();
     }
 }

src/main/java/com/tagtraum/perf/gcviewer/action/Export.java

@@ -49,6 +49,7 @@ public Export(final GCViewerGui gcViewer) {
         saveDialog.addChoosableFileFilter(new ExtensionFileFilter(".txt", LocalisationHelper.getString("fileexport_dialog_txt"), DataWriterType.PLAIN));
         saveDialog.addChoosableFileFilter(new ExtensionFileFilter(".simple.log", LocalisationHelper.getString("fileexport_dialog_simplelog"), DataWriterType.SIMPLE));
         saveDialog.addChoosableFileFilter(new ExtensionFileFilter(".csv", LocalisationHelper.getString("fileexport_dialog_summarylog"), DataWriterType.SUMMARY));
+        saveDialog.addChoosableFileFilter(new ExtensionFileFilter(".png", LocalisationHelper.getString("fileexport_dialog_png"), DataWriterType.PNG));
         }
 
     public void actionPerformed(final ActionEvent e) {

src/main/java/com/tagtraum/perf/gcviewer/exp/DataWriterType.java

@@ -11,5 +11,6 @@ public enum DataWriterType {
     CSV,
     CSV_TS,
     SIMPLE,
-    SUMMARY;
+    SUMMARY,
+    PNG;
 }

src/main/java/com/tagtraum/perf/gcviewer/exp/impl/DataWriterFactory.java

@@ -53,6 +53,7 @@ public static DataWriter getDataWriter(File file, DataWriterType type, Map<Strin
             case CSV_TS  : return new CSVTSDataWriter(outputStream);
             case SIMPLE  : return new SimpleGcWriter(outputStream);
             case SUMMARY : return new SummaryDataWriter(outputStream, configuration); 
+            case PNG	 : return new PNGDataWriter(outputStream);
             default : throw new IOException(LocalisationHelper.getString("datawriterfactory_instantiation_failed") + " " + file);
         }
     }

src/main/java/com/tagtraum/perf/gcviewer/exp/impl/PNGDataWriter.java

@@ -0,0 +1,30 @@
+package com.tagtraum.perf.gcviewer.exp.impl;
+
+import java.io.FileOutputStream;
+import java.io.IOException;
+import java.io.OutputStream;
+
+import com.tagtraum.perf.gcviewer.SimpleChartRenderer;
+import com.tagtraum.perf.gcviewer.exp.AbstractDataWriter;
+import com.tagtraum.perf.gcviewer.model.GCModel;
+
+/**
+ * PNG data writter
+ * 
+ * @author Angel Olle Blazquez
+ *
+ */
+public class PNGDataWriter extends AbstractDataWriter {
+	private FileOutputStream out;
+
+	public PNGDataWriter(OutputStream outputStream) {
+		super(outputStream);
+		out = (FileOutputStream)outputStream;
+	}
+
+	@Override
+	public void write(GCModel model) throws IOException {
+		new SimpleChartRenderer().render(model, out);
+	}
+
+}

src/main/resources/com/tagtraum/perf/gcviewer/localStrings.properties

@@ -153,6 +153,8 @@ fileexport_dialog_csv_ts = Comma separated values with unix timestamp (*.csv)
 
 fileexport_dialog_error_occured = An error occured.
 
+fileexport_dialog_png = PNG Image (*.png)
+
 fileexport_dialog_simplelog = Simple GC Log (GCHisto compatible, *.simple.log)
 
 fileexport_dialog_summarylog = Summary GC Log (*.csv)