QR code reader

app/build.gradle

@@ -30,4 +30,5 @@ dependencies {
     compile files('libs/jackson-core-2.9.2.jar')
     compile files('libs/jackson-databind-2.9.2.jar')
     compile files('libs/jackson-annotations-2.9.2.jar')
+    compile 'me.dm7.barcodescanner:zxing:1.9'
 }

app/src/main/AndroidManifest.xml

@@ -9,6 +9,7 @@
     <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
     <uses-permission android:name="android.permission.VIBRATE"/>
     <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
+    <uses-permission android:name="android.permission.CAMERA" />
 
     <application
         android:allowBackup="true"
@@ -41,6 +42,9 @@
         <activity android:name="fr.utc.simde.jessy.ArticleGroupActivity"
             android:configChanges="orientation"
             android:screenOrientation="portrait" />
+        <activity android:name="fr.utc.simde.jessy.QRCodeReaderActivity"
+            android:configChanges="orientation"
+            android:screenOrientation="portrait" />
     </application>
 
 </manifest>
\ No newline at end of file

app/src/main/java/fr/utc/simde/jessy/BaseActivity.java

@@ -602,6 +602,19 @@ public abstract class BaseActivity extends InternetActivity {
             return true;
     }
 
+    protected boolean haveCameraPermission() {
+        if (Build.VERSION.SDK_INT >= 23) {
+            if (checkSelfPermission(Manifest.permission.CAMERA) == PackageManager.PERMISSION_GRANTED) {
+                return true;
+            } else {
+                ActivityCompat.requestPermissions(this, new String[]{Manifest.permission.CAMERA}, 1);
+                return false;
+            }
+        }
+        else
+            return true;
+    }
+
     protected void checkUpdate() { checkUpdate(true); }
     protected void checkUpdate(final boolean popupIfNot) {
         final Dialog updateDialog = new Dialog(BaseActivity.this);
@@ -667,6 +680,13 @@ public abstract class BaseActivity extends InternetActivity {
         }.start();
     }
 
+    protected void startQRCodeReaderActivity(final Activity activity) {
+        if (haveCameraPermission())
+            startActivity(new Intent(activity, QRCodeReaderActivity.class));
+        else
+            dialog.errorDialog(BaseActivity.this, getString(R.string.qrcode), getString(R.string.need_camera_permission));
+    }
+
     protected boolean update(final String version) {
         final String destination = this.downloadLocation + getString(R.string.app_name) + " " + version + ".apk";
         final String url = this.gitUrl + getString(R.string.app_name) + " " + version + ".apk";

app/src/main/java/fr/utc/simde/jessy/FoundationsOptionsActivity.java

@@ -126,7 +126,7 @@ public class FoundationsOptionsActivity extends BaseActivity {
                 else if (isOption(position,3))
                     dialog.infoDialog(FoundationsOptionsActivity.this, "Non encore fait", "Pour la version 0.12");
                 else if (isOption(position,4))
-                    dialog.infoDialog(FoundationsOptionsActivity.this, "Non encore fait", "Pour la version 0.10");
+                    startQRCodeReaderActivity(FoundationsOptionsActivity.this);
                 else if (isOption(position,5))
                     startCardManagementActivity(FoundationsOptionsActivity.this);
                 else if (isOption(position,6))

app/src/main/java/fr/utc/simde/jessy/QRCodeReaderActivity.java

+package fr.utc.simde.jessy;
+
+import android.content.Context;
+import android.content.DialogInterface;
+import android.os.Bundle;
+import android.util.Log;
+
+import com.google.zxing.Result;
+
+import fr.utc.simde.jessy.tools.ExtendedScannerView;
+import me.dm7.barcodescanner.core.IViewFinder;
+import me.dm7.barcodescanner.zxing.ZXingScannerView;
+
+import static android.hardware.Camera.CameraInfo.CAMERA_FACING_BACK;
+
+/**
+ * Created by Samy on 18/11/2017.
+ */
+
+public class QRCodeReaderActivity extends BaseActivity {
+    private static final String LOG_TAG = "_QRCodeReaderActivity";
+
+    protected ZXingScannerView scannerView;
+    protected ZXingScannerView.ResultHandler cameraHandler;
+
+    @Override
+    public void onCreate(final Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+
+        this.scannerView = new ZXingScannerView(QRCodeReaderActivity.this) {
+            @Override
+            protected IViewFinder createViewFinderView(Context context) {
+                return new ExtendedScannerView(context);
+            }
+        };
+        setContentView(this.scannerView);
+
+        this.cameraHandler = new ZXingScannerView.ResultHandler() {
+            @Override
+            public void handleResult(Result result) {
+                Log.d(LOG_TAG, result.getText());
+                Log.d(LOG_TAG, result.getBarcodeFormat().toString());
+                dialog.infoDialog(QRCodeReaderActivity.this, getString(R.string.qrcode_reading), result.getText(), new DialogInterface.OnClickListener() {
+                    @Override
+                    public void onClick(DialogInterface dialog, int which) {
+                        scannerView.resumeCameraPreview(cameraHandler);
+                    }
+                });
+            }
+        };
+
+        this.scannerView.setResultHandler(this.cameraHandler);
+        this.scannerView.startCamera(CAMERA_FACING_BACK);
+    }
+}

app/src/main/java/fr/utc/simde/jessy/tools/ExtendedScannerView.java

+package fr.utc.simde.jessy.tools;
+
+import android.content.Context;
+import android.content.res.Configuration;
+import android.graphics.Canvas;
+import android.graphics.Paint;
+import android.graphics.Point;
+import android.graphics.Rect;
+import android.util.AttributeSet;
+import android.view.View;
+
+import fr.utc.simde.jessy.R;
+import me.dm7.barcodescanner.core.DisplayUtils;
+import me.dm7.barcodescanner.core.IViewFinder;
+
+/**
+ * Created by Samy on 19/11/2017.
+ */
+
+public class ExtendedScannerView extends View implements IViewFinder {
+    private Rect mFramingRect;
+
+    private static final float PORTRAIT_WIDTH_RATIO = 0.9f;
+    private static final float PORTRAIT_WIDTH_HEIGHT_RATIO = 1.0f;
+
+    private static final float LANDSCAPE_HEIGHT_RATIO = 5f/8;
+    private static final float LANDSCAPE_WIDTH_HEIGHT_RATIO = 1.4f;
+    private static final int MIN_DIMENSION_DIFF = 50;
+
+    private static final float SQUARE_DIMENSION_RATIO = 0.9f;
+
+    private static final int[] SCANNER_ALPHA = {0, 64, 128, 192, 255, 192, 128, 64};
+    private int scannerAlpha;
+    private static final int POINT_SIZE = 10;
+    private static final long ANIMATION_DELAY = 80l;
+
+    private final int mDefaultLaserColor = getResources().getColor(R.color.viewfinder_laser);
+    private final int mDefaultMaskColor = getResources().getColor(R.color.viewfinder_mask);
+    private final int mDefaultBorderColor = getResources().getColor(R.color.viewfinder_border);
+    private final int mDefaultBorderStrokeWidth = getResources().getInteger(R.integer.viewfinder_border_width);
+    private final int mDefaultBorderLineLength = getResources().getInteger(R.integer.viewfinder_border_length);
+
+    protected Paint mFinderMaskPaint;
+    protected Paint mBorderPaint;
+    protected int mBorderLineLength;
+    protected boolean mSquareViewFinder;
+
+    public ExtendedScannerView(Context context) {
+        super(context);
+
+        init();
+    }
+
+    public ExtendedScannerView(Context context, AttributeSet attrs) {
+        super(context, attrs);
+
+        init();
+    }
+
+    private void init() {
+        mFinderMaskPaint = new Paint();
+        mFinderMaskPaint.setColor(mDefaultMaskColor);
+
+        mBorderPaint = new Paint();
+        mBorderPaint.setColor(mDefaultBorderColor);
+        mBorderPaint.setStyle(Paint.Style.STROKE);
+        mBorderPaint.setStrokeWidth(mDefaultBorderStrokeWidth);
+
+        mBorderLineLength = mDefaultBorderLineLength;
+    }
+
+    public void setupViewFinder() {
+        updateFramingRect();
+        invalidate();
+    }
+
+    public Rect getFramingRect() {
+        return mFramingRect;
+    }
+
+    @Override
+    public void onDraw(Canvas canvas) {
+        if (getFramingRect() == null) {
+            return;
+        }
+
+        drawViewFinderMask(canvas);
+        drawViewFinderBorder(canvas);
+        drawLaser(canvas);
+    }
+
+    public void drawViewFinderMask(Canvas canvas) {
+        int width = canvas.getWidth();
+        int height = canvas.getHeight();
+        Rect framingRect = getFramingRect();
+
+        canvas.drawRect(0, 0, width, framingRect.top, mFinderMaskPaint);
+        canvas.drawRect(0, framingRect.top, framingRect.left, framingRect.bottom + 1, mFinderMaskPaint);
+        canvas.drawRect(framingRect.right + 1, framingRect.top, width, framingRect.bottom + 1, mFinderMaskPaint);
+        canvas.drawRect(0, framingRect.bottom + 1, width, height, mFinderMaskPaint);
+    }
+
+    public void drawViewFinderBorder(Canvas canvas) {
+        Rect framingRect = getFramingRect();
+
+        canvas.drawLine(framingRect.left - 1, framingRect.top - 1, framingRect.left - 1, framingRect.top - 1 + mBorderLineLength, mBorderPaint);
+        canvas.drawLine(framingRect.left - 1, framingRect.top - 1, framingRect.left - 1 + mBorderLineLength, framingRect.top - 1, mBorderPaint);
+
+        canvas.drawLine(framingRect.left - 1, framingRect.bottom + 1, framingRect.left - 1, framingRect.bottom + 1 - mBorderLineLength, mBorderPaint);
+        canvas.drawLine(framingRect.left - 1, framingRect.bottom + 1, framingRect.left - 1 + mBorderLineLength, framingRect.bottom + 1, mBorderPaint);
+
+        canvas.drawLine(framingRect.right + 1, framingRect.top - 1, framingRect.right + 1, framingRect.top - 1 + mBorderLineLength, mBorderPaint);
+        canvas.drawLine(framingRect.right + 1, framingRect.top - 1, framingRect.right + 1 - mBorderLineLength, framingRect.top - 1, mBorderPaint);
+
+        canvas.drawLine(framingRect.right + 1, framingRect.bottom + 1, framingRect.right + 1, framingRect.bottom + 1 - mBorderLineLength, mBorderPaint);
+        canvas.drawLine(framingRect.right + 1, framingRect.bottom + 1, framingRect.right + 1 - mBorderLineLength, framingRect.bottom + 1, mBorderPaint);
+    }
+
+    public void drawLaser(Canvas canvas) {
+        Rect framingRect = getFramingRect();
+
+        scannerAlpha = (scannerAlpha + 1) % SCANNER_ALPHA.length;
+
+        postInvalidateDelayed(ANIMATION_DELAY,
+            framingRect.left - POINT_SIZE,
+            framingRect.top - POINT_SIZE,
+            framingRect.right + POINT_SIZE,
+            framingRect.bottom + POINT_SIZE);
+    }
+
+    @Override
+    protected void onSizeChanged(int xNew, int yNew, int xOld, int yOld) {
+        updateFramingRect();
+    }
+
+    public synchronized void updateFramingRect() {
+        Point viewResolution = new Point(getWidth(), getHeight());
+        int width;
+        int height;
+        int orientation = DisplayUtils.getScreenOrientation(getContext());
+
+        if (mSquareViewFinder) {
+            if (orientation != Configuration.ORIENTATION_PORTRAIT) {
+                height = (int) (getHeight() * SQUARE_DIMENSION_RATIO);
+                width = height;
+            } else {
+                width = (int) (getWidth() * SQUARE_DIMENSION_RATIO);
+                height = width;
+            }
+        } else {
+            if(orientation != Configuration.ORIENTATION_PORTRAIT) {
+                height = (int) (getHeight() * LANDSCAPE_HEIGHT_RATIO);
+                width = (int) (LANDSCAPE_WIDTH_HEIGHT_RATIO * height);
+            } else {
+                width = (int) (getWidth() * PORTRAIT_WIDTH_RATIO);
+                height = (int) (PORTRAIT_WIDTH_HEIGHT_RATIO * width);
+            }
+        }
+
+        if (width > getWidth()) {
+            width = getWidth() - MIN_DIMENSION_DIFF;
+        }
+
+        if (height > getHeight()) {
+            height = getHeight() - MIN_DIMENSION_DIFF;
+        }
+
+        int leftOffset = (viewResolution.x - width) / 2;
+        int topOffset = (viewResolution.y - height) / 2;
+        mFramingRect = new Rect(leftOffset, topOffset, leftOffset + width, topOffset + height);
+    }
+}
\ No newline at end of file

app/src/main/res/layout/activity_buyer_info.xml

@@ -23,7 +23,6 @@
         android:id="@+id/layout_articles"
         android:layout_width="match_parent"
         android:layout_height="match_parent"
-        android:layout_alignParentBottom="true"
         android:layout_marginBottom="50dp"
         android:layout_marginTop="50dp"
         android:orientation="horizontal">

app/src/main/res/values/strings.xml

@@ -59,6 +59,7 @@
     <string name="type">Type</string>
     <string name="day_s_">jour(s)</string>
     <string name="update">Mise à jour</string>
+    <string name="qrcode">QR Code</string>
     <string name="credit">Crédits</string>
     <string name="author">&lt;/&gt; avec ♥ par Samy NASTUZZI</string>
 
@@ -163,6 +164,8 @@
     <string name="actual_version">Version actuelle</string>
     <string name="available_version">Version disponible</string>
     <string name="need_storage_permission">Il est nécessaire d\'autoriser l\'application à sauvegarder du contenu dans votre dossier de téléchargements</string>
+    <string name="need_camera_permission">Il est nécessaire d\'autoriser l\'application à utiliser la caméra pour lire un QR Code</string>
+    <string name="qrcode_reading">Lecture d\'un QR Code</string>
 
     <string name="print_mode">Mode d\'affichage</string>
     <string name="filters">Filtres d\'affichage</string>