/*******************************************************************************
* Copyright (c) 2007-2009 Red Hat, Inc.
* Distributed under license by Red Hat, Inc. All rights reserved.
* This program is made available under the terms of the
* Eclipse Public License v1.0 which accompanies this distribution,
* and is available at http://www.eclipse.org/legal/epl-v10.html
*
* Contributor:
* Red Hat, Inc. - initial API and implementation
******************************************************************************/
package org.jboss.tools.hibernate.ui.diagram.editors.actions;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.lang.reflect.InvocationTargetException;
import org.eclipse.core.resources.IFile;
import org.eclipse.core.resources.ResourcesPlugin;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.IPath;
import org.eclipse.core.runtime.IProgressMonitor;
import org.eclipse.draw2d.Graphics;
import org.eclipse.draw2d.IFigure;
import org.eclipse.draw2d.SWTGraphics;
import org.eclipse.draw2d.geometry.Rectangle;
import org.eclipse.gef.LayerConstants;
import org.eclipse.gef.editparts.ScalableFreeformRootEditPart;
import org.eclipse.jface.dialogs.MessageDialog;
import org.eclipse.jface.dialogs.ProgressMonitorDialog;
import org.eclipse.jface.resource.ImageDescriptor;
import org.eclipse.swt.SWT;
import org.eclipse.swt.graphics.Device;
import org.eclipse.swt.graphics.GC;
import org.eclipse.swt.graphics.Image;
import org.eclipse.swt.graphics.ImageData;
import org.eclipse.swt.graphics.ImageLoader;
import org.eclipse.ui.actions.WorkspaceModifyOperation;
import org.eclipse.ui.dialogs.SaveAsDialog;
import org.hibernate.eclipse.console.HibernateConsolePlugin;
import org.jboss.tools.hibernate.ui.diagram.DiagramViewerMessages;
import org.jboss.tools.hibernate.ui.diagram.editors.DiagramViewer;
/**
* Export image into selected image format.
* "png", "jpg", "bmp" are supported.
*
* @author Vitali Yemialyanchyk
*/
public class ExportImageAction extends DiagramBaseAction {
public static final String ACTION_ID = "export_as_image_id"; //$NON-NLS-1$
public static final String[] dialogFilterExtensions = new String[] { "*.png", "*.jpg", "*.bmp" }; //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$
public static final String[] dialogFilterNames = new String[] { DiagramViewerMessages.ExportImageAction_png_format,
DiagramViewerMessages.ExportImageAction_jpg_format, DiagramViewerMessages.ExportImageAction_bmp_format };
//private FileDialog saveDialog = null;
private SaveAsDialog saveDialog = null;
private boolean showErrDialog = true;
public static final ImageDescriptor img =
ImageDescriptor.createFromFile(DiagramViewer.class, "icons/export.png"); //$NON-NLS-1$
public ExportImageAction(DiagramViewer editor) {
super(editor);
setId(ACTION_ID);
setText(DiagramViewerMessages.ExportImageAction_export_as_image);
setImageDescriptor(img);
}
/**
* main goal of this function to allow tests for
* ExportImageAction functionality
*
* @param saveDialog
*/
public void setSaveDialog(SaveAsDialog saveDialog) {
this.saveDialog = saveDialog;
}
public void setShowErrDialog(boolean showErrDialog) {
this.showErrDialog = showErrDialog;
}
public void run() {
boolean createdSaveDialog = false;
if (saveDialog == null) {
saveDialog = new SaveAsDialog(getDiagramViewer().getSite().getWorkbenchWindow().getShell());
createdSaveDialog = true;
}
saveDialog.setOriginalName(getDiagramViewer().getStoreFileName());
saveDialog.open();
final IPath pathSave = saveDialog.getResult();
saveDialog = null;
if (pathSave == null) {
return;
}
final IFigure fig = ((ScalableFreeformRootEditPart) getDiagramViewer()
.getEditPartViewer().getRootEditPart())
.getLayer(LayerConstants.PRINTABLE_LAYERS);
int imageTypeTmp = SWT.IMAGE_BMP;
String ext = pathSave.getFileExtension();
if (ext != null) {
ext = ext.toLowerCase();
if (ext.endsWith("jpg")) { //$NON-NLS-1$
imageTypeTmp = SWT.IMAGE_JPEG;
} else if (ext.endsWith("png")) { //$NON-NLS-1$
imageTypeTmp = SWT.IMAGE_PNG;
} else if (ext.endsWith("gif")) { //$NON-NLS-1$
imageTypeTmp = SWT.IMAGE_GIF;
} else if (ext.endsWith("bmp")) { //$NON-NLS-1$
imageTypeTmp = SWT.IMAGE_BMP;
}
}
IPath pathTmp = pathSave;
if (ext == null) {
pathTmp = pathTmp.addFileExtension("bmp"); //$NON-NLS-1$
}
final IPath path = pathTmp;
final int imageType = imageTypeTmp;
final IFile file = ResourcesPlugin.getWorkspace().getRoot().getFile(path);
WorkspaceModifyOperation op = new WorkspaceModifyOperation() {
public void execute(final IProgressMonitor monitor) {
ByteArrayInputStream inputStream = null;
try {
if (file != null) {
byte[] imageData = createImage(fig, imageType);
if (file.exists()) {
file.delete(true, null);
}
if (!file.exists()) {
inputStream = new ByteArrayInputStream(imageData);
file.create(inputStream, true, null);
}
}
} catch (CoreException e) {
HibernateConsolePlugin.getDefault().logErrorMessage("ExportImageAction", e); //$NON-NLS-1$
if (showErrDialog) {
MessageDialog.openInformation(getDiagramViewer().getSite().getShell(),
DiagramViewerMessages.ExportImageAction_error, DiagramViewerMessages.ExportImageAction_failed_to_export_image + e.getMessage());
}
}
finally {
if (inputStream != null) {
try {
inputStream.close();
} catch (IOException e) {
// ignore
}
}
}
}
};
try {
new ProgressMonitorDialog(
createdSaveDialog ? getDiagramViewer().getSite().getWorkbenchWindow().getShell() : null)
.run(false, true, op);
} catch (InvocationTargetException e) {
} catch (InterruptedException e) {
}
}
/***
* Returns the bytes of an encoded image for the specified
* IFigure in the specified format.
*
* @param figure the Figure to create an image for.
* @param format one of SWT.IMAGE_BMP, SWT.IMAGE_BMP_RLE, SWT.IMAGE_GIF
* SWT.IMAGE_ICO, SWT.IMAGE_JPEG, or SWT.IMAGE_PNG
* @return the bytes of an encoded image for the specified Figure
*/
private byte[] createImage(IFigure figure, int format) {
//Device device = getDiagramViewer().getEditPartViewer().getControl()
// .getDisplay();
Device device = null;
Rectangle r = figure.getBounds();
ByteArrayOutputStream result = new ByteArrayOutputStream();
Image image = null;
GC gc = null;
Graphics g = null;
try {
image = new Image(device, r.width, r.height);
gc = new GC(image);
g = new SWTGraphics(gc);
g.translate(r.x * -1, r.y * -1);
figure.paint(g);
ImageLoader imageLoader = new ImageLoader();
imageLoader.data = new ImageData[] { image.getImageData() };
imageLoader.save(result, format);
} catch (Throwable e) {
HibernateConsolePlugin.getDefault().logErrorMessage("ExportImageAction - save:", e); //$NON-NLS-1$
} finally {
if (g != null) {
g.dispose();
}
if (gc != null) {
gc.dispose();
}
if (image != null) {
image.dispose();
}
}
return result.toByteArray();
}
}