/*
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* Copyright (C) 2008 ZXing authors
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.videogo.scan.main;
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import android.app.Activity;
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import android.content.Intent;
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import android.graphics.Bitmap;
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import android.net.Uri;
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import android.os.Bundle;
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import android.os.Handler;
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import android.os.Message;
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import com.google.zxing.BarcodeFormat;
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import com.google.zxing.Result;
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import com.videogo.scan.camera.CameraManager;
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import com.videogo.util.LogUtil;
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import java.util.Collection;
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import ezviz.ezopensdk.R;
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public final class CaptureActivityHandler extends Handler {
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private static final String TAG = CaptureActivityHandler.class.getSimpleName();
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private final CaptureActivity activity;
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private final DecodeThread decodeThread;
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private State state;
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private final CameraManager cameraManager;
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private enum State {
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PREVIEW, SUCCESS, DONE
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}
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CaptureActivityHandler(CaptureActivity activity, Collection<BarcodeFormat> decodeFormats, String characterSet,
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CameraManager cameraManager) {
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this.activity = activity;
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decodeThread = new DecodeThread(activity, decodeFormats, characterSet, new ViewfinderResultPointCallback(
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activity.getmViewfinderView()));
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decodeThread.start();
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state = State.SUCCESS;
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// Start ourselves capturing previews and decoding.
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this.cameraManager = cameraManager;
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cameraManager.startPreview();
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restartPreviewAndDecode();
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}
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@Override
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public void handleMessage(Message message) {
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if (message.what == R.id.auto_focus) {
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// LogUtil.d(TAG, "Got auto-focus message");
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// When one auto focus pass finishes, start another. This is the closest thing to
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// continuous AF. It does seem to hunt a bit, but I'm not sure what else to do.
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if (state == State.PREVIEW) {
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cameraManager.requestAutoFocus(this, R.id.auto_focus);
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}
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} else if (message.what == R.id.restart_preview) {
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restartPreviewAndDecode();
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} else if (message.what == R.id.decode_succeeded) {
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state = State.SUCCESS;
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Bundle bundle = message.getData();
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Bitmap barcode = bundle == null ? null : (Bitmap) bundle.getParcelable(DecodeThread.BARCODE_BITMAP);
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if (message.obj instanceof Result) {
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activity.handleDecode(((Result) message.obj).getText(), barcode);
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} else if (message.obj instanceof String) {
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activity.handleDecode((String) message.obj, barcode);
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}
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} else if (message.what == R.id.decode_failed) {
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// We're decoding as fast as possible, so when one decode fails, start another.
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state = State.PREVIEW;
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cameraManager.requestPreviewFrame(decodeThread.getHandler(), R.id.decode);
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} else if (message.what == R.id.return_scan_result) {
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LogUtil.d(TAG, "Got return scan result message");
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activity.setResult(Activity.RESULT_OK, (Intent) message.obj);
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activity.finish();
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} else if (message.what == R.id.launch_product_query) {
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LogUtil.d(TAG, "Got product query message");
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String url = (String) message.obj;
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Intent intent = new Intent(Intent.ACTION_VIEW, Uri.parse(url));
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intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_WHEN_TASK_RESET);
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activity.startActivity(intent);
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} else {
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}
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}
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public void quitSynchronously() {
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state = State.DONE;
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cameraManager.stopPreview();
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Message quit = Message.obtain(decodeThread.getHandler(), R.id.quit);
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quit.sendToTarget();
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try {
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// Wait at most half a second; should be enough time, and onPause() will timeout quickly
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decodeThread.join(500L);
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} catch (InterruptedException e) {
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// continue
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}
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// Be absolutely sure we don't send any queued up messages
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removeMessages(R.id.decode_succeeded);
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removeMessages(R.id.decode_failed);
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}
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private void restartPreviewAndDecode() {
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if (state == State.SUCCESS) {
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state = State.PREVIEW;
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cameraManager.requestPreviewFrame(decodeThread.getHandler(), R.id.decode);
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cameraManager.requestAutoFocus(this, R.id.auto_focus);
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activity.drawViewfinder();
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}
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}
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}
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