ANDROID: add tool to generate SB qrcodes

Author: chrisws

ChangeLog

@@ -1,3 +1,9 @@
+2014-06-11
+	Android changes:
+	- Run by URL/QrCode.
+	- Implemented BEEP/SOUND
+	- Screen layout adjusts when virtual keypad displayed
+
 2014-04-20
 	Released Windows version 0.11.5
 

src/platform/android/jni/runtime.cpp

@@ -409,9 +409,10 @@ void Runtime::handleKeyEvent(MAEvent &event) {
     //  case AKEYCODE_NUMPAD_SUBTRACT:
     //    event.key = SB_KEY_KP_MINUS;
     //    break;
-  case AKEYCODE_SLASH:
-    event.key = SB_KEY_KP_DIV;
-    break;
+    // AKEYCODE_SLASH is '?'
+    //  case AKEYCODE_SLASH:
+    //    event.key = SB_KEY_KP_DIV;
+    //    break;
   case AKEYCODE_PAGE_UP:
     event.key = SB_KEY_PGUP;
     break;

src/platform/android/src/net/sourceforge/smallbasic/MainActivity.java

@@ -35,7 +35,6 @@
 import android.content.DialogInterface;
 import android.content.Intent;
 import android.graphics.Rect;
-import android.media.AudioManager;
 import android.net.Uri;
 import android.os.Build;
 import android.os.Bundle;
@@ -54,13 +53,12 @@
 public class MainActivity extends NativeActivity {
   private static final String TAG = "smallbasic";
   private static final String WEB_BAS = "web.bas";
-  private static final String SCHEME_BAS = "scheme.bas";
+  private static final String SCHEME_BAS = "qrcode.bas";
   private static final String SCHEME = "smallbasic://x/";
   private String _startupBas = null;
   private boolean _untrusted = false;
   private ExecutorService _audioExecutor = Executors.newSingleThreadExecutor();
   private Queue<Sound> _sounds = new ConcurrentLinkedQueue<Sound>();
-  private float _ringVolume;
 
   static {
     System.loadLibrary("smallbasic");
@@ -130,9 +128,7 @@ public void onClick(DialogInterface dialog, int index) {
   }
 
   public void playTone(int frq, int dur, int vol) {
-    float volume = (vol / 100f) * _ringVolume;
-    Log.i(TAG, "playTone: " + frq + " " + dur + " " + vol + " " + volume);
-    
+    float volume = (vol / 100f);
     final Sound sound = new Sound(frq, dur, volume);
     _sounds.add(sound);
     _audioExecutor.execute(new Runnable() {
@@ -202,11 +198,6 @@ protected void onCreate(Bundle savedInstanceState) {
     } catch (Exception e) {
       Log.i(TAG, "Failed to start web service: ", e);
     }
-    
-    AudioManager audioManager = (AudioManager) getSystemService(Context.AUDIO_SERVICE);
-    float ringVolume = audioManager.getStreamVolume(AudioManager.STREAM_RING);
-    float maxRingVolume = audioManager.getStreamMaxVolume(AudioManager.STREAM_RING);
-    _ringVolume = ringVolume / maxRingVolume;
   }
 
   private String buildRunForm(String buffer, String token) {

web/qrcode/pom.xml

@@ -0,0 +1,43 @@
+<!-- mvn clean compile assembly:single -->
+<project xmlns="http://maven.apache.org/POM/4.0.0" 
+         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+	<modelVersion>4.0.0</modelVersion>
+	<groupId>net.sourceforge.smallbasic</groupId>
+	<artifactId>QrEncoder</artifactId>
+	<version>1.0</version>
+	<packaging>jar</packaging>
+	<name>QrEncoder</name>
+	<description>Encode a SmallBASIC program into a QRCode</description>
+	<dependencies>
+    <dependency>
+	    <groupId>com.google.zxing</groupId>
+	    <artifactId>core</artifactId>
+	    <version>2.0</version>
+    </dependency>
+	</dependencies>
+  <build>
+    <plugins>
+      <plugin>
+        <artifactId>maven-compiler-plugin</artifactId>
+        <configuration>
+          <source>1.7</source>
+          <target>1.7</target>
+        </configuration>
+      </plugin>
+      <plugin>
+        <artifactId>maven-assembly-plugin</artifactId>
+        <configuration>
+          <archive>
+            <manifest>
+              <mainClass>net.sourceforge.smallbasic.QrEncoder</mainClass>
+            </manifest>
+          </archive>
+          <descriptorRefs>
+            <descriptorRef>jar-with-dependencies</descriptorRef>
+          </descriptorRefs>
+        </configuration>
+      </plugin>
+    </plugins>
+  </build>
+</project>

web/qrcode/src/main/java/net/sourceforge/smallbasic/QrEncoder.java

@@ -0,0 +1,120 @@
+package net.sourceforge.smallbasic;
+
+import java.awt.Color;
+import java.awt.Graphics2D;
+import java.awt.image.BufferedImage;
+import java.io.ByteArrayOutputStream;
+import java.io.DataInputStream;
+import java.io.DataOutputStream;
+import java.io.FileInputStream;
+import java.io.FileNotFoundException;
+import java.io.FileOutputStream;
+import java.io.IOException;
+import java.util.HashMap;
+import java.util.Map;
+import java.util.zip.GZIPOutputStream;
+
+import javax.imageio.ImageIO;
+import javax.xml.bind.DatatypeConverter;
+
+import com.google.zxing.BarcodeFormat;
+import com.google.zxing.EncodeHintType;
+import com.google.zxing.WriterException;
+import com.google.zxing.common.BitMatrix;
+import com.google.zxing.qrcode.QRCodeWriter;
+import com.google.zxing.qrcode.decoder.ErrorCorrectionLevel;
+
+/**
+ * Encode SmallBASIC program into a QrCode
+ * 
+ * @author chrisws
+ */
+public class QrEncoder {
+  /**
+   * @param args
+   * @throws IOException 
+   * @throws WriterException 
+   */
+  public static void main(String[] args) throws IOException, WriterException {
+    new QrEncoder().process(args[0]);
+  }
+
+  protected String cleanupCode(String fileText) {
+    String result = fileText.replaceAll("(?mi)^\\s*?rem.*[\\r\\n]", "");
+    result = result.replaceAll("(?mi)^\\s*?'.*[\\r\\n]", "");
+    result = result.replaceAll("(?mi)^\\s*?#.*[\\r\\n]", "");
+    return result.trim();
+  }
+  
+  /**
+   * Creates a QR code image using the given text and dimensions 
+   */
+  protected byte[] createQRCode(String qrText, int size) throws WriterException, IOException {
+    Map<EncodeHintType, Object> hintMap = new HashMap<EncodeHintType, Object>();
+    hintMap.put(EncodeHintType.ERROR_CORRECTION, ErrorCorrectionLevel.L);
+    QRCodeWriter qrCodeWriter = new QRCodeWriter();
+    BitMatrix byteMatrix = qrCodeWriter.encode(qrText, BarcodeFormat.QR_CODE, size, size, hintMap);
+    int crunchifyWidth = byteMatrix.getWidth();
+    BufferedImage image = new BufferedImage(crunchifyWidth, crunchifyWidth, BufferedImage.TYPE_INT_RGB);
+    image.createGraphics();
+    Graphics2D graphics = (Graphics2D) image.getGraphics();
+    graphics.setColor(Color.WHITE);
+    graphics.fillRect(0, 0, crunchifyWidth, crunchifyWidth);
+    graphics.setColor(Color.BLACK);
+    for (int i = 0; i < crunchifyWidth; i++) {
+      for (int j = 0; j < crunchifyWidth; j++) {
+        if (byteMatrix.get(i, j)) {
+          graphics.fillRect(i, j, 1, 1);
+        }
+      }
+    }
+    ByteArrayOutputStream output = new ByteArrayOutputStream();
+    ImageIO.write(image, "png", output);
+    return output.toByteArray();
+  }
+
+  protected String getFileText(String fileName) throws IOException {
+    ByteArrayOutputStream out = new ByteArrayOutputStream();
+    try (DataInputStream is = new DataInputStream(new FileInputStream(fileName));) {
+      byte[] buf = new byte[1024];
+      int len = is.read(buf);
+      while (len != -1) {
+        out.write(buf, 0, len);
+        len = is.read(buf);
+      }
+    }
+    return out.toString("utf-8");
+  }
+
+  protected void process(String fileName) throws IOException,
+      FileNotFoundException, WriterException {
+
+    // load the file text
+    String fileText = getFileText(fileName);
+    
+    // remove comments and empty white space
+    fileText = cleanupCode(fileText);
+
+    // gzip the result
+    String zipText = zipBase64(fileText);
+
+    // encode the zipped data into a qrcode
+    byte[] out = createQRCode(zipText, 512);
+    
+    writeOutput(out, fileName + ".png");
+  }
+
+  protected void writeOutput(byte[] bytes, String fileName) throws FileNotFoundException, IOException {
+    try (DataOutputStream out = new DataOutputStream(new FileOutputStream(fileName));) {
+      out.write(bytes, 0, bytes.length);
+    }    
+  }
+
+  protected String zipBase64(String fileText) throws IOException {
+    ByteArrayOutputStream buffer = new ByteArrayOutputStream();
+    DataOutputStream stream = new DataOutputStream(new GZIPOutputStream(buffer));
+    stream.write(fileText.getBytes());
+    stream.close();
+    return DatatypeConverter.printBase64Binary(buffer.toByteArray());
+  }
+}

web/qrcode/src/test/java/net/sourceforge/smallbasic/TestQrEncoder.java

@@ -0,0 +1,32 @@
+package net.sourceforge.smallbasic;
+
+import java.io.IOException;
+
+import org.junit.Assert;
+import org.junit.Test;
+
+/**
+ * Tests for QrEncoder
+ * 
+ * @author chrisws
+ */
+public class TestQrEncoder {
+  @Test
+  public void testCleanup() {
+    QrEncoder inst = new QrEncoder();
+    String fileText = " 'quote comments\r\n# hash comments\nREM remarks\r\n? 'hello'\n? 10";
+    String expectedText = "? 'hello'\n? 10";
+    String result = inst.cleanupCode(fileText);
+    Assert.assertEquals(expectedText, result);
+  }
+
+  @Test
+  public void testZipBase64() throws IOException {
+    QrEncoder inst = new QrEncoder();
+    String fileText = "? 'hello'\n? 10";
+    String expectedText = "H4sIAAAAAAAAALNXUM9IzcnJV+eyVzA0AAAgB4JODgAAAA==";
+    String result = inst.zipBase64(fileText);
+    Assert.assertEquals(expectedText, result);
+  }
+
+}