X-Git-Url: http://pileus.org/git/?a=blobdiff_plain;f=src%2Forg%2Ffedorahosted%2Ffreeotp%2FCameraDialogFragment.java;h=80c6c9bc6eb24ee0fac4bdba6838017a0ba7dfca;hb=a80af12864b08b59ef6592ed3463ee7f1000a0ab;hp=f4c7760a91f8746dc9a2693ef45f5602a3a4638a;hpb=7c623216cb4072ead174d48f1bd5ce55e78433e4;p=~andy%2Ffreeotp

diff --git a/src/org/fedorahosted/freeotp/CameraDialogFragment.java b/src/org/fedorahosted/freeotp/CameraDialogFragment.java
index f4c7760..80c6c9b 100644
--- a/src/org/fedorahosted/freeotp/CameraDialogFragment.java
+++ b/src/org/fedorahosted/freeotp/CameraDialogFragment.java
@@ -20,49 +20,93 @@
 
 package org.fedorahosted.freeotp;
 
+import java.util.List;
+
+import android.annotation.TargetApi;
 import android.app.AlertDialog;
-import android.content.Context;
+import android.app.Dialog;
 import android.content.DialogInterface;
 import android.hardware.Camera;
+import android.hardware.Camera.CameraInfo;
 import android.hardware.Camera.Parameters;
+import android.os.Bundle;
+import android.os.Handler;
+import android.os.Message;
 import android.view.Surface;
 import android.view.SurfaceHolder;
 import android.view.SurfaceView;
 import android.view.View;
-import android.view.WindowManager;
 import android.widget.TextView;
 
-public class CameraDialogFragment extends BaseAlertDialogFragment implements SurfaceHolder.Callback {
+public class CameraDialogFragment extends BaseAlertDialogFragment
+			implements SurfaceHolder.Callback, Camera.AutoFocusCallback {
 	public static final String FRAGMENT_TAG = "fragment_camera";
 
-	private DecodeAsyncTask mDecodeAsyncTask;
+	private final CameraInfo mCameraInfo = new CameraInfo();
+	private final DecodeAsyncTask mDecodeAsyncTask;
+	private final int mCameraId;
+	private Handler mHandler;
 	private Camera mCamera;
 
 	public CameraDialogFragment() {
 		super(R.string.scan_qr_code, R.layout.camera,
 			android.R.string.cancel, R.string.manual_entry, 0);
-	}
 
-	@Override
-	protected void onViewInflated(View view) {
-		SurfaceView sv = (SurfaceView) view.findViewById(R.id.camera_surfaceview);
-		sv.getHolder().addCallback(this);
+		// Find a back-facing camera, otherwise use the first camera.
+		int cameraId;
+		for (cameraId = Camera.getNumberOfCameras() - 1; cameraId > 0; cameraId--) {
+			Camera.getCameraInfo(cameraId, mCameraInfo);
+			if (mCameraInfo.facing == CameraInfo.CAMERA_FACING_BACK)
+				break;
+		}
+		mCameraId = cameraId;
+
+		// Create the decoder thread
+		mDecodeAsyncTask = new DecodeAsyncTask() {
+			@Override
+			protected void onPostExecute(String result) {
+				super.onPostExecute(result);
+				if (result != null)
+					((MainActivity) getActivity()).tokenURIReceived(result);
+				dismiss();
+			}
+		};
 	}
 
 	@Override
-	public void onClick(DialogInterface dialog, int which) {
-		if (which == AlertDialog.BUTTON_NEUTRAL) {
+	public void onCreate(Bundle savedInstanceState) {
+		super.onCreate(savedInstanceState);
+
+		// If we have no cameras, open the manual dialog
+		if (mCameraId < 0) {
 			new ManualDialogFragment().show(getFragmentManager(),
 					ManualDialogFragment.FRAGMENT_TAG);
+			dismiss();
+			return;
 		}
+
+		mDecodeAsyncTask.execute();
+	}
+
+	@Override
+	public void onDestroy() {
+		super.onDestroy();
+		mDecodeAsyncTask.cancel(true);
+	}
+
+	@Override
+	protected void onViewInflated(View view) {
+		SurfaceView sv = (SurfaceView) view.findViewById(R.id.camera_surfaceview);
+		sv.getHolder().addCallback(this);
 	}
 
 	@Override
-	public void onDestroyView() {
-		if (mDecodeAsyncTask != null)
-			mDecodeAsyncTask.cancel(true);
+	public void onClick(DialogInterface dialog, int which) {
+		if (which != AlertDialog.BUTTON_NEUTRAL)
+			return;
 
-		super.onDestroyView();
+		new ManualDialogFragment().show(getFragmentManager(),
+				ManualDialogFragment.FRAGMENT_TAG);
 	}
 
 	@Override
@@ -70,50 +114,70 @@ public class CameraDialogFragment extends BaseAlertDialogFragment implements Sur
 		if (mCamera == null)
 			return;
 
-		WindowManager wm = (WindowManager) getActivity().getSystemService(Context.WINDOW_SERVICE);
-		switch (wm.getDefaultDisplay().getRotation()) {
+		int rotation = 0;
+		switch (getActivity().getWindowManager().getDefaultDisplay().getRotation()) {
 		case Surface.ROTATION_0:
-			mCamera.setDisplayOrientation(90);
+			rotation = 0;
+			break;
+		case Surface.ROTATION_90:
+			rotation = 90;
+			break;
+		case Surface.ROTATION_180:
+			rotation = 180;
 			break;
 		case Surface.ROTATION_270:
-			mCamera.setDisplayOrientation(180);
+			rotation = 270;
 			break;
 		}
 
+		mCamera.setDisplayOrientation((mCameraInfo.orientation - rotation + 360) % 360);
 		mCamera.startPreview();
+
+		if (mHandler != null)
+			mHandler.sendEmptyMessageDelayed(0, 100);
 	}
 
 	@Override
+	@TargetApi(14)
 	public void surfaceCreated(SurfaceHolder holder) {
+		surfaceDestroyed(holder);
+
 		try {
-			mCamera = Camera.open();
+			// Open the camera
+			mCamera = Camera.open(mCameraId);
 			mCamera.setPreviewDisplay(holder);
-
-			// Create the decoder thread
-			mDecodeAsyncTask = new DecodeAsyncTask() {
-				@Override
-				protected void onPostExecute(String result) {
-					super.onPostExecute(result);
-					if (result != null)
-						((MainActivity) getActivity()).tokenURIReceived(result);
-					mDecodeAsyncTask = null;
-					dismiss();
-				}
-			};
-			mDecodeAsyncTask.execute();
 			mCamera.setPreviewCallback(mDecodeAsyncTask);
-
-			// Set auto-focus mode
-			Parameters params = mCamera.getParameters();
-			params.setFocusMode(Parameters.FOCUS_MODE_CONTINUOUS_VIDEO);
-			mCamera.setParameters(params);
 		} catch (Exception e) {
-			SurfaceView sv = (SurfaceView) getDialog().findViewById(R.id.camera_surfaceview);
+			e.printStackTrace();
+			surfaceDestroyed(holder);
+
+			// Show error message
+			Dialog d = getDialog();
+			SurfaceView sv = (SurfaceView) d.findViewById(R.id.camera_surfaceview);
+			TextView tv = (TextView) d.findViewById(R.id.camera_textview);
 			sv.setVisibility(View.INVISIBLE);
-			TextView tv = (TextView) getDialog().findViewById(R.id.camera_textview);
 			tv.setVisibility(View.VISIBLE);
-			e.printStackTrace();
+			return;
 		}
+
+		// Set auto-focus mode
+		Parameters params = mCamera.getParameters();
+		List<String> modes = params.getSupportedFocusModes();
+		if (modes.contains(Parameters.FOCUS_MODE_CONTINUOUS_PICTURE))
+			params.setFocusMode(Parameters.FOCUS_MODE_CONTINUOUS_PICTURE);
+		else if (modes.contains(Parameters.FOCUS_MODE_CONTINUOUS_VIDEO))
+			params.setFocusMode(Parameters.FOCUS_MODE_CONTINUOUS_VIDEO);
+		else if (modes.contains(Parameters.FOCUS_MODE_AUTO)) {
+			params.setFocusMode(Parameters.FOCUS_MODE_AUTO);
+			mHandler = new Handler() {
+				@Override
+				public void handleMessage(Message msg) {
+					super.handleMessage(msg);
+					mCamera.autoFocus(CameraDialogFragment.this);
+				}
+			};
+		}
+		mCamera.setParameters(params);
 	}
 
 	@Override
@@ -121,9 +185,21 @@ public class CameraDialogFragment extends BaseAlertDialogFragment implements Sur
 		if (mCamera == null)
 			return;
 
+		if (mHandler != null) {
+			mCamera.cancelAutoFocus();
+			mHandler.removeMessages(0);
+			mHandler = null;
+		}
+
 		mCamera.stopPreview();
 		mCamera.setPreviewCallback(null);
 		mCamera.release();
 		mCamera = null;
 	}
+
+	@Override
+	public void onAutoFocus(boolean success, Camera camera) {
+		if (mHandler != null)
+			mHandler.sendEmptyMessageDelayed(0, 1000);
+	}
 }