package edu.ualberta.med.biobank.rcp;
/*
* Copyright (c) 2000, 2002 IBM Corp. All rights reserved.
* This file is made available under the terms of the Common Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/cpl-v10.html
*/
import java.io.ByteArrayOutputStream;
import java.io.PrintStream;
import org.eclipse.swt.SWT;
import org.eclipse.swt.graphics.Color;
import org.eclipse.swt.graphics.Cursor;
import org.eclipse.swt.graphics.DeviceData;
import org.eclipse.swt.graphics.Font;
import org.eclipse.swt.graphics.FontData;
import org.eclipse.swt.graphics.GC;
import org.eclipse.swt.graphics.Image;
import org.eclipse.swt.graphics.Point;
import org.eclipse.swt.graphics.Rectangle;
import org.eclipse.swt.graphics.Region;
import org.eclipse.swt.widgets.Button;
import org.eclipse.swt.widgets.Canvas;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Event;
import org.eclipse.swt.widgets.Label;
import org.eclipse.swt.widgets.List;
import org.eclipse.swt.widgets.Listener;
import org.eclipse.swt.widgets.MessageBox;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.swt.widgets.Text;
public class Sleak {
Display display;
Shell shell;
List list;
Canvas canvas;
Button start, stop, check;
Text text;
Label label;
Object[] oldObjects = new Object[0];
Object[] objects = new Object[0];
Error[] errors = new Error[0];
public void open() {
display = Display.getCurrent();
shell = new Shell(display);
shell.setText("S-Leak"); //$NON-NLS-1$
list = new List(shell, SWT.BORDER | SWT.V_SCROLL);
list.addListener(SWT.Selection, new Listener() {
@Override
public void handleEvent(Event event) {
refreshObject();
}
});
text = new Text(shell, SWT.BORDER | SWT.H_SCROLL | SWT.V_SCROLL);
canvas = new Canvas(shell, SWT.BORDER);
canvas.addListener(SWT.Paint, new Listener() {
@Override
public void handleEvent(Event event) {
paintCanvas(event);
}
});
check = new Button(shell, SWT.CHECK);
check.setText("Stack"); //$NON-NLS-1$
check.addListener(SWT.Selection, new Listener() {
@Override
public void handleEvent(Event e) {
toggleStackTrace();
}
});
start = new Button(shell, SWT.PUSH);
start.setText("Snap"); //$NON-NLS-1$
start.addListener(SWT.Selection, new Listener() {
@Override
public void handleEvent(Event event) {
refreshAll();
}
});
stop = new Button(shell, SWT.PUSH);
stop.setText("Diff"); //$NON-NLS-1$
stop.addListener(SWT.Selection, new Listener() {
@Override
public void handleEvent(Event event) {
refreshDifference();
}
});
label = new Label(shell, SWT.BORDER);
label.setText("0 object(s)"); //$NON-NLS-1$
shell.addListener(SWT.Resize, new Listener() {
@Override
public void handleEvent(Event e) {
layout();
}
});
check.setSelection(false);
text.setVisible(false);
Point size = shell.getSize();
shell.setSize(size.x / 2, size.y / 2);
shell.open();
}
void refreshLabel() {
int colors = 0, cursors = 0, fonts = 0, gcs = 0, images = 0;
// int regions = 0;
for (int i = 0; i < objects.length; i++) {
Object object = objects[i];
if (object instanceof Color)
colors++;
if (object instanceof Cursor)
cursors++;
if (object instanceof Font)
fonts++;
if (object instanceof GC)
gcs++;
if (object instanceof Image)
images++;
// if (object instanceof Region)
// regions++;
}
String string = ""; //$NON-NLS-1$
if (colors != 0)
string += colors + " Color(s)\n"; //$NON-NLS-1$
if (cursors != 0)
string += cursors + " Cursor(s)\n"; //$NON-NLS-1$
if (fonts != 0)
string += fonts + " Font(s)\n"; //$NON-NLS-1$
if (gcs != 0)
string += gcs + " GC(s)\n"; //$NON-NLS-1$
if (images != 0)
string += images + " Image(s)\n"; //$NON-NLS-1$
/* Currently regions are not counted. */
// if (regions != 0) string += regions + " Region(s)\n";
if (string.length() != 0) {
string = string.substring(0, string.length() - 1);
}
label.setText(string);
}
void refreshDifference() {
DeviceData info = display.getDeviceData();
if (!info.tracking) {
MessageBox dialog =
new MessageBox(shell, SWT.ICON_WARNING | SWT.OK);
dialog.setText(shell.getText());
dialog
.setMessage("Warning: Device is not tracking resource allocation"); //$NON-NLS-1$
dialog.open();
}
Object[] newObjects = info.objects;
Error[] newErrors = info.errors;
Object[] diffObjects = new Object[newObjects.length];
Error[] diffErrors = new Error[newErrors.length];
int count = 0;
for (int i = 0; i < newObjects.length; i++) {
int index = 0;
while (index < oldObjects.length) {
if (newObjects[i] == oldObjects[index])
break;
index++;
}
if (index == oldObjects.length) {
diffObjects[count] = newObjects[i];
diffErrors[count] = newErrors[i];
count++;
}
}
objects = new Object[count];
errors = new Error[count];
System.arraycopy(diffObjects, 0, objects, 0, count);
System.arraycopy(diffErrors, 0, errors, 0, count);
list.removeAll();
text.setText(""); //$NON-NLS-1$
canvas.redraw();
for (int i = 0; i < objects.length; i++) {
list.add(objectName(objects[i]));
}
refreshLabel();
layout();
}
String objectName(Object object) {
String string = object.toString();
int index = string.lastIndexOf('.');
if (index == -1)
return string;
return string.substring(index + 1, string.length());
}
void toggleStackTrace() {
refreshObject();
layout();
}
void paintCanvas(Event event) {
canvas.setCursor(null);
int index = list.getSelectionIndex();
if (index == -1)
return;
GC gc = event.gc;
Object object = objects[index];
if (object instanceof Color) {
if (((Color) object).isDisposed())
return;
gc.setBackground((Color) object);
gc.fillRectangle(canvas.getClientArea());
return;
}
if (object instanceof Cursor) {
if (((Cursor) object).isDisposed())
return;
canvas.setCursor((Cursor) object);
return;
}
if (object instanceof Font) {
if (((Font) object).isDisposed())
return;
gc.setFont((Font) object);
FontData[] array = gc.getFont().getFontData();
StringBuffer sb = new StringBuffer();
String lf = text.getLineDelimiter();
for (int i = 0; i < array.length; i++) {
FontData data = array[i];
String style = "NORMAL"; //$NON-NLS-1$
int bits = data.getStyle();
if (bits != 0) {
if ((bits & SWT.BOLD) != 0)
style = "BOLD "; //$NON-NLS-1$
if ((bits & SWT.ITALIC) != 0)
style += "ITALIC"; //$NON-NLS-1$
}
sb.append(data.getName()).append(" ").append(data.getHeight()) //$NON-NLS-1$
.append(" ").append(style).append(lf); //$NON-NLS-1$
}
gc.drawString(sb.toString(), 0, 0);
return;
}
// NOTHING TO DRAW FOR GC
// if (object instanceof GC) {
// return;
// }
if (object instanceof Image) {
if (((Image) object).isDisposed())
return;
gc.drawImage((Image) object, 0, 0);
return;
}
if (object instanceof Region) {
if (((Region) object).isDisposed())
return;
String string = ((Region) object).getBounds().toString();
gc.drawString(string, 0, 0);
return;
}
}
void refreshObject() {
int index = list.getSelectionIndex();
if (index == -1)
return;
if (check.getSelection()) {
ByteArrayOutputStream stream = new ByteArrayOutputStream();
PrintStream s = new PrintStream(stream);
errors[index].printStackTrace(s);
text.setText(stream.toString());
text.setVisible(true);
canvas.setVisible(false);
} else {
canvas.setVisible(true);
text.setVisible(false);
canvas.redraw();
}
}
void refreshAll() {
oldObjects = new Object[0];
refreshDifference();
oldObjects = objects;
}
void layout() {
Rectangle rect = shell.getClientArea();
// String[] strings = new String[objects.length];
int width = 0;
String[] items = list.getItems();
GC gc = new GC(list);
for (int i = 0; i < objects.length; i++) {
width = Math.max(width, gc.stringExtent(items[i]).x);
}
gc.dispose();
Point size1 = start.computeSize(SWT.DEFAULT, SWT.DEFAULT);
Point size2 = stop.computeSize(SWT.DEFAULT, SWT.DEFAULT);
Point size3 = check.computeSize(SWT.DEFAULT, SWT.DEFAULT);
Point size4 = label.computeSize(SWT.DEFAULT, SWT.DEFAULT);
width = Math.max(size1.x, Math.max(size2.x, Math.max(size3.x, width)));
width = Math.max(64,
Math.max(size4.x, list.computeSize(width, SWT.DEFAULT).x));
start.setBounds(0, 0, width, size1.y);
stop.setBounds(0, size1.y, width, size2.y);
check.setBounds(0, size1.y + size2.y, width, size3.y);
label.setBounds(0, rect.height - size4.y, width, size4.y);
int height = size1.y + size2.y + size3.y;
list.setBounds(0, height, width, rect.height - height - size4.y);
text.setBounds(width, 0, rect.width - width, rect.height);
canvas.setBounds(width, 0, rect.width - width, rect.height);
}
public static void main(String[] args) {
Display display = new Display();
Sleak sleak = new Sleak();
sleak.open();
while (!sleak.shell.isDisposed()) {
if (!display.readAndDispatch())
display.sleep();
}
display.dispose();
}
}