/*
* Freeplane - mind map editor
* Copyright (C) 2008 Joerg Mueller, Daniel Polansky, Christian Foltin, Dimitry Polivaev
*
* 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 2 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 org.freeplane.features.export.mindmapmode;
import java.awt.image.BufferedImage;
import java.awt.image.RenderedImage;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.Iterator;
import javax.imageio.IIOImage;
import javax.imageio.ImageIO;
import javax.imageio.ImageTypeSpecifier;
import javax.imageio.ImageWriteParam;
import javax.imageio.ImageWriter;
import javax.imageio.metadata.IIOInvalidTreeException;
import javax.imageio.metadata.IIOMetadata;
import javax.imageio.metadata.IIOMetadataNode;
import javax.imageio.stream.ImageOutputStream;
import javax.swing.filechooser.FileFilter;
import org.freeplane.core.resources.ResourceController;
import org.freeplane.core.ui.ExampleFileFilter;
import org.freeplane.core.ui.components.UITools;
import org.freeplane.core.util.LogUtils;
import org.freeplane.core.util.TextUtils;
import org.freeplane.features.map.MapModel;
import org.freeplane.features.mode.Controller;
/**
* @author foltin
* @author kakeda
* @author rreppel
*/
public class ExportToImage implements IExportEngine {
private final String imageDescripton;
private final String imageType;
ExportToImage( final String imageType, final String imageDescripton) {
this.imageType = imageType;
this.imageDescripton = imageDescripton;
}
public void export(MapModel map, File toFile) {
try {
final RenderedImage image = new ImageCreator(getImageResolutionDPI()).createBufferedImage(map);
if (image != null) {
exportToImage(image, toFile);
}
}
catch (final OutOfMemoryError ex) {
UITools.errorMessage(TextUtils.getText("out_of_memory"));
}
}
/**
* Export image.
* @param toFile
*/
public boolean exportToImage(final RenderedImage image, File chosenFile) {
try {
Controller.getCurrentController().getViewController().setWaitingCursor(true);
Iterator<ImageWriter> imageWritersByFormatName = ImageIO.getImageWritersByFormatName(imageType);
for(;;){
ImageWriter writer = imageWritersByFormatName.next();
ImageWriteParam writeParam = writer.getDefaultWriteParam();
ImageTypeSpecifier typeSpecifier = ImageTypeSpecifier.createFromBufferedImageType(BufferedImage.TYPE_INT_RGB);
IIOMetadata metadata = writer.getDefaultImageMetadata(typeSpecifier, writeParam);
if ((metadata.isReadOnly() || !metadata.isStandardMetadataFormatSupported()) && imageWritersByFormatName.hasNext()) {
continue;
}
addDpiToMetadata(metadata);
final FileOutputStream outFile = new FileOutputStream(chosenFile);
final ImageOutputStream stream = ImageIO.createImageOutputStream(outFile);
try {
writer.setOutput(ImageIO.createImageOutputStream(outFile));
writer.write(metadata, new IIOImage(image, null, metadata), writeParam);
break;
} finally {
stream.close();
outFile.close();
}
}
}
catch (final IOException e1) {
LogUtils.warn(e1);
UITools.errorMessage(TextUtils.getText("export_failed"));
}
finally{
Controller.getCurrentController().getViewController().setWaitingCursor(false);
}
return true;
}
private void addDpiToMetadata(IIOMetadata metadata) throws IIOInvalidTreeException {
int dpi = getImageResolutionDPI();
double dotsPerMilli = 1.0 * dpi / 10 / 2.54;
IIOMetadataNode root = new IIOMetadataNode("javax_imageio_1.0");
IIOMetadataNode horiz = new IIOMetadataNode("HorizontalPixelSize");
horiz.setAttribute("value", Double.toString(dotsPerMilli));
IIOMetadataNode vert = new IIOMetadataNode("VerticalPixelSize");
vert.setAttribute("value", Double.toString(dotsPerMilli));
IIOMetadataNode dim = new IIOMetadataNode("Dimension");
dim.appendChild(horiz);
dim.appendChild(vert);
root.appendChild(dim);
metadata.mergeTree("javax_imageio_1.0", root);
}
public FileFilter getFileFilter() {
return new ExampleFileFilter(imageType, imageDescripton);
}
private int getImageResolutionDPI() {
return ResourceController.getResourceController().getIntProperty("exported_image_resolution_dpi", 300);
}
}