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Initial checkin of bug client code from buglabs

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git-svn-id: https://zxing.googlecode.com/svn/trunk@473 59b500cc-1b3d-0410-9834-0bbf25fbcc57
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srowen 2008-06-24 19:00:09 +00:00
parent 753ca4afbf
commit 8fb592777b
8 changed files with 676 additions and 0 deletions
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<?xml version="1.0" encoding="UTF-8"?>
<!--
Copyright 2008 ZXing authors
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
-->
<project name="bug" default="build">
<property file="../build.properties"/>
<target name="init">
<tstamp/>
<fail message="Please build 'core' first">
<condition>
<not>
<available file="../core/core.jar" type="file"/>
</not>
</condition>
</fail>
<fail message="Please install BUG .jar files in lib/ first">
<condition>
<not>
<available file="lib/com.buglabs.common_1.0.0.jar" type="file"/>
<!-- Actually we need even more, just checking for one -->
</not>
</condition>
</fail>
</target>
<target name="build" depends="init">
<mkdir dir="build"/>
<javac srcdir="src"
destdir="build"
source="1.5"
target="1.5"
optimize="true"
debug="true"
deprecation="true">
<classpath>
<fileset dir="lib">
<include name="*.jar"/>
</fileset>
<pathelement location="../core/core.jar"/>
</classpath>
</javac>
<jar jarfile="bug.jar" basedir="build">
<manifest>
<attribute name="Bundle-Name" value="BugBarcode"/>
<attribute name="Bundle-Vendor" value="ZXing Project"/>
<attribute name="Bundle-SymbolicName" value="BugBarcode"/>
<attribute name="Bundle-Version" value="${version}"/>
<attribute name="Bundle-Activator" value="com.google.zxing.client.bug.Activator"/>
<attribute name="Import-Package" value="com.buglabs.application,com.buglabs.device,com.buglabs.bug.module.camera.pub,com.buglabs.bug.module.lcd.pub,com.buglabs.util,com.google.zxing,com.google.zxing.common,org.osgi.framework,org.osgi.util.tracker"/>
<attribute name="Bug-Bundle-Type" value="Application"/>
</manifest>
</jar>
</target>
<target name="clean">
<delete dir="build"/>
</target>
</project>

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/*
* Copyright 2008 ZXing authors
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.google.zxing.client.bug;
import com.google.zxing.ReaderException;
import com.google.zxing.common.BaseMonochromeBitmapSource;
import java.awt.Image;
import java.awt.image.PixelGrabber;
/**
* <p>An implementation based on AWT's {@link Image} representation.
* This can be used on CDC devices or other devices that do not have access to the
* Mobile Information Device Profile and thus do not have access to
* javax.microedition.lcdui.Image.</p>
*
* @author David Albert
* @author Sean Owen
*/
public final class AWTImageMonochromeBitmapSource extends BaseMonochromeBitmapSource {
private final int height;
private final int width;
private final int[] pixels;
public AWTImageMonochromeBitmapSource(Image image) throws ReaderException {
height = image.getHeight(null);
width = image.getWidth(null);
pixels = new int[height * width];
// Seems best in this situation to grab all pixels upfront. Grabbing any individual pixel
// entails creating a relatively expensive object and calling through several methods.
PixelGrabber grabber = new PixelGrabber(image, 0, 0, width, height, pixels, 0, width);
try {
grabber.grabPixels();
} catch (InterruptedException ie) {
throw new ReaderException("Interrupted while reading pixels");
}
}
public int getHeight() {
return height;
}
public int getWidth() {
return width;
}
/**
* See <code>com.google.zxing.client.j2me.LCDUIImageMonochromeBitmapSource</code> for more explanation
* of the computation used in this method.
*/
public int getLuminance(int x, int y) {
int pixel = pixels[x * width + y];
return (((pixel & 0x00FF0000) >> 16) +
((pixel & 0x0000FF00) >> 7) +
(pixel & 0x000000FF )) >> 2;
}
public void cacheRowForLuminance(int y) {
// do nothing; we are already forced to cache all pixels
}
}

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/*
* Copyright 2008 ZXing authors
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.google.zxing.client.bug;
import com.buglabs.util.ServiceFilterGenerator;
import com.google.zxing.client.bug.servicetracker.BugBarcodeServiceTracker;
import org.osgi.framework.BundleActivator;
import org.osgi.framework.BundleContext;
import org.osgi.framework.Filter;
import org.osgi.framework.InvalidSyntaxException;
import org.osgi.util.tracker.ServiceTracker;
/**
* BundleActivator for BugBarcode.
*
* @author David Albert
*/
public final class Activator implements BundleActivator {
private BugBarcodeServiceTracker barcodeServiceTracker;
private ServiceTracker serviceTracker;
public void start(BundleContext context) throws InvalidSyntaxException {
barcodeServiceTracker = new BugBarcodeServiceTracker(context);
Filter filter =
context.createFilter(ServiceFilterGenerator.generateServiceFilter(barcodeServiceTracker.getServices()));
serviceTracker = new ServiceTracker(context, filter, barcodeServiceTracker);
serviceTracker.open();
}
public void stop(BundleContext context) {
barcodeServiceTracker.stop();
serviceTracker.close();
}
}

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/*
* Copyright 2008 ZXing authors
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.google.zxing.client.bug;
import java.awt.Canvas;
import java.awt.Dimension;
import java.awt.Graphics;
import java.awt.Image;
/**
* @author John Connolly
*/
public final class ImageCanvas extends Canvas {
private Image image;
public ImageCanvas(Image image) {
this.image = image;
}
@Override
public void paint(Graphics g) {
g.drawImage(image, 0, 0, this);
}
@Override
public void update(Graphics g) {
paint(g);
}
@Override
public Dimension getMinimumSize() {
return getPreferredSize();
}
@Override
public Dimension getPreferredSize() {
int width;
do {
width = image.getWidth(this);
} while (width < 0);
int height;
do {
height = image.getHeight(this);
} while (height < 0);
return new Dimension(width, height);
}
public Image getImage() {
return image;
}
public void setImage(Image image) {
this.image = image;
}
}

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/*
* Copyright 2008 ZXing authors
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.google.zxing.client.bug.app;
import com.buglabs.bug.module.camera.pub.ICameraDevice;
import com.buglabs.bug.module.camera.pub.ICameraModuleControl;
import com.buglabs.device.ButtonEvent;
import com.buglabs.device.IButtonEventListener;
import com.buglabs.device.IButtonEventProvider;
import com.google.zxing.MonochromeBitmapSource;
import com.google.zxing.MultiFormatReader;
import com.google.zxing.Reader;
import com.google.zxing.ReaderException;
import com.google.zxing.Result;
import com.google.zxing.client.bug.AWTImageMonochromeBitmapSource;
import com.google.zxing.client.bug.ImageCanvas;
import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Frame;
import java.awt.Image;
import java.awt.Label;
import java.awt.Toolkit;
import java.awt.image.ImageObserver;
import java.io.IOException;
/**
* @author David Albert
*/
public final class BugBarcodeApp implements IButtonEventListener, ImageObserver {
private ICameraDevice camera;
private ICameraModuleControl cameraControl;
private Frame frame;
private Image image;
private ImageCanvas imageCanvas;
private Label barcodeLabel;
private boolean pictureTaken;
private final Reader reader;
public BugBarcodeApp(Frame frame,
ICameraDevice camera,
ICameraModuleControl cameraControl,
IButtonEventProvider buttonProvider) {
this.frame = frame;
this.camera = camera;
this.reader = new MultiFormatReader();
this.cameraControl = cameraControl;
pictureTaken = false;
buttonProvider.addListener(this);
createUI();
}
private void createUI() {
frame.setTitle("BugBarcode");
frame.setBackground(Color.WHITE);
frame.setLayout(new BorderLayout());
barcodeLabel = new Label("Take a picture of a barcode!", Label.CENTER);
frame.add(barcodeLabel, BorderLayout.SOUTH);
imageCanvas = new ImageCanvas(null);
frame.setVisible(true);
}
private void shoot() throws IOException {
// get image from camera for use with physical bug
cameraControl.setLEDFlash(true);
image = Toolkit.getDefaultToolkit().createImage(camera.getImage()).getScaledInstance(400, 300, Image.SCALE_FAST);
cameraControl.setLEDFlash(false);
if (Toolkit.getDefaultToolkit().prepareImage(image, -1, -1, this)) {
drawAndScan();
}
}
private void drawAndScan() {
imageCanvas.setImage(image.getScaledInstance(216, 150, Image.SCALE_FAST));
if (!pictureTaken) {
frame.add(imageCanvas, BorderLayout.CENTER);
pictureTaken = true;
frame.setVisible(true);
}
imageCanvas.repaint();
try {
MonochromeBitmapSource source = new AWTImageMonochromeBitmapSource(image);
Result result = reader.decode(source);
barcodeLabel.setText(result.getText());
} catch (ReaderException re) {
barcodeLabel.setText("I can't find a barcode here");
}
}
public void buttonEvent(ButtonEvent event) {
if (event.getButton() == ButtonEvent.BUTTON_HOTKEY_1 && event.getAction() == 0) {
try {
shoot();
} catch (IOException ioe) {
// continue
}
}
}
public boolean imageUpdate(Image img, int infoflags, int x, int y, int width, int height) {
if ((infoflags & ALLBITS) != 0) {
drawAndScan();
return false;
}
return true;
}
}

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/*
* Copyright 2008 ZXing authors
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.google.zxing.client.bug.servicetracker;
import com.buglabs.application.AbstractServiceTracker;
import com.buglabs.bug.module.camera.pub.ICameraDevice;
import com.buglabs.bug.module.camera.pub.ICameraModuleControl;
import com.buglabs.bug.module.lcd.pub.IModuleDisplay;
import com.buglabs.device.IButtonEventProvider;
import com.google.zxing.client.bug.app.BugBarcodeApp;
import org.osgi.framework.BundleContext;
import java.awt.Frame;
import java.util.Collection;
/**
* Service tracker for the BugApp Bundle
*
* @author David Albert
*/
public final class BugBarcodeServiceTracker extends AbstractServiceTracker {
private IButtonEventProvider buttonEventProvider;
private Frame frame;
private BugBarcodeApp app;
public BugBarcodeServiceTracker(BundleContext context) {
super(context);
}
@Override
public void doStart() {
IModuleDisplay display = (IModuleDisplay) getService(IModuleDisplay.class);
ICameraDevice camera = (ICameraDevice) getService(ICameraDevice.class);
ICameraModuleControl cameraControl = (ICameraModuleControl) getService(ICameraModuleControl.class);
buttonEventProvider = (IButtonEventProvider) getService(IButtonEventProvider.class);
frame = display.getFrame();
app = new BugBarcodeApp(frame, camera, cameraControl, buttonEventProvider);
}
/**
* Called when a service that this application depends is unregistered.
*/
@Override
public void doStop() {
buttonEventProvider.removeListener(app);
frame.dispose();
}
/**
* Allows the user to set the service dependencies by
* adding them to services list returned by getServices().
* i.e.nl getServices().add(MyService.class.getName());
*/
@Override
public void initServices() {
Collection<String> appServices = (Collection<String>) getServices();
appServices.add("com.buglabs.bug.module.camera.pub.ICameraDevice");
appServices.add("com.buglabs.bug.module.lcd.pub.IModuleDisplay");
appServices.add(IButtonEventProvider.class.getName());
appServices.add(ICameraModuleControl.class.getName());
}
}