X-Git-Url: https://git.argeo.org/?a=blobdiff_plain;f=rcp%2Forg.argeo.eclipse.ui.rcp%2Fsrc%2Forg%2Fargeo%2Fswt%2Fdesktop%2FMiniImageViewer.java;fp=rcp%2Forg.argeo.eclipse.ui.rcp%2Fsrc%2Forg%2Fargeo%2Fswt%2Fdesktop%2FMiniImageViewer.java;h=d8dd663e7c98dc51a42296b85fdc31cf4833a0c1;hb=4aa1a56294c7b08eff1d5bed51f757a3779326c0;hp=0000000000000000000000000000000000000000;hpb=2c43bef8dfa02d443ba3f58c6ce547394f6178b5;p=lgpl%2Fargeo-commons.git

diff --git a/rcp/org.argeo.eclipse.ui.rcp/src/org/argeo/swt/desktop/MiniImageViewer.java b/rcp/org.argeo.eclipse.ui.rcp/src/org/argeo/swt/desktop/MiniImageViewer.java
new file mode 100644
index 000000000..d8dd663e7
--- /dev/null
+++ b/rcp/org.argeo.eclipse.ui.rcp/src/org/argeo/swt/desktop/MiniImageViewer.java
@@ -0,0 +1,129 @@
+package org.argeo.swt.desktop;
+
+import java.io.IOException;
+import java.net.MalformedURLException;
+import java.net.URISyntaxException;
+import java.net.URL;
+import java.nio.file.Path;
+import java.nio.file.Paths;
+
+import org.eclipse.swt.SWT;
+import org.eclipse.swt.events.PaintEvent;
+import org.eclipse.swt.events.PaintListener;
+import org.eclipse.swt.events.SelectionAdapter;
+import org.eclipse.swt.events.SelectionEvent;
+import org.eclipse.swt.graphics.Image;
+import org.eclipse.swt.graphics.ImageData;
+import org.eclipse.swt.graphics.ImageLoader;
+import org.eclipse.swt.graphics.Point;
+import org.eclipse.swt.layout.GridData;
+import org.eclipse.swt.layout.GridLayout;
+import org.eclipse.swt.layout.RowLayout;
+import org.eclipse.swt.widgets.Button;
+import org.eclipse.swt.widgets.Canvas;
+import org.eclipse.swt.widgets.Composite;
+import org.eclipse.swt.widgets.Display;
+import org.eclipse.swt.widgets.FileDialog;
+import org.eclipse.swt.widgets.Shell;
+
+public class MiniImageViewer implements PaintListener {
+	private URL url;
+	private Canvas area;
+
+	private Image image;
+
+	public MiniImageViewer(Composite parent, int style) {
+		parent.setLayout(new GridLayout());
+
+		Composite toolBar = new Composite(parent, SWT.NONE);
+		toolBar.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, false));
+		toolBar.setLayout(new RowLayout());
+		Button load = new Button(toolBar, SWT.FLAT);
+		load.setText("\u2191");// up arrow
+		load.addSelectionListener(new SelectionAdapter() {
+
+			@Override
+			public void widgetSelected(SelectionEvent e) {
+				FileDialog fileDialog = new FileDialog(area.getShell());
+				String path = fileDialog.open();
+				if (path != null) {
+					setUrl(path);
+				}
+			}
+
+		});
+
+		area = new Canvas(parent, SWT.NONE);
+		area.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true));
+		area.addPaintListener(this);
+	}
+
+	protected void load(URL url) {
+		try {
+			ImageLoader imageLoader = new ImageLoader();
+			ImageData[] data = imageLoader.load(url.openStream());
+			image = new Image(area.getDisplay(), data[0]);
+		} catch (IOException e) {
+			// TODO Auto-generated catch block
+			e.printStackTrace();
+		}
+	}
+
+	@Override
+	public void paintControl(PaintEvent e) {
+		e.gc.drawImage(image, 0, 0);
+
+	}
+
+	protected Path url2path(URL url) {
+		try {
+			Path path = Paths.get(url.toURI());
+			return path;
+		} catch (URISyntaxException e) {
+			throw new IllegalStateException("Cannot convert " + url + " to uri", e);
+		}
+	}
+
+	public void setUrl(URL url) {
+		this.url = url;
+		if (area != null)
+			load(this.url);
+	}
+
+	public void setUrl(String url) {
+		try {
+			setUrl(new URL(url));
+		} catch (MalformedURLException e) {
+			// try with http
+			try {
+				setUrl(new URL("file://" + url));
+				return;
+			} catch (MalformedURLException e1) {
+				// nevermind...
+			}
+			throw new IllegalArgumentException("Cannot interpret URL " + url, e);
+		}
+	}
+
+	public static void main(String[] args) {
+		Display display = Display.getCurrent() == null ? new Display() : Display.getCurrent();
+		Shell shell = new Shell(display, SWT.SHELL_TRIM);
+
+		MiniImageViewer miniBrowser = new MiniImageViewer(shell, SWT.NONE);
+		String url = args.length > 0 ? args[0] : "";
+		if (!url.trim().equals("")) {
+			miniBrowser.setUrl(url);
+			shell.setText(url);
+		} else {
+			shell.setText("*");
+		}
+
+		shell.open();
+		shell.setSize(new Point(800, 480));
+		while (!shell.isDisposed()) {
+			if (!display.readAndDispatch())
+				display.sleep();
+		}
+	}
+
+}