open-keychain/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/QrCodeViewActivity.java
2018-07-02 14:50:11 +02:00

94 lines
3.6 KiB
Java

/*
* Copyright (C) 2017 Schürmann & Breitmoser GbR
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package org.sufficientlysecure.keychain.ui;
import android.arch.lifecycle.ViewModelProviders;
import android.graphics.Bitmap;
import android.net.Uri;
import android.os.Bundle;
import android.support.v4.app.ActivityCompat;
import android.support.v7.widget.CardView;
import android.widget.ImageView;
import org.sufficientlysecure.keychain.Constants;
import org.sufficientlysecure.keychain.R;
import org.sufficientlysecure.keychain.model.SubKey.UnifiedKeyInfo;
import org.sufficientlysecure.keychain.ui.base.BaseActivity;
import org.sufficientlysecure.keychain.ui.keyview.UnifiedKeyInfoViewModel;
import org.sufficientlysecure.keychain.ui.util.KeyFormattingUtils;
import org.sufficientlysecure.keychain.ui.util.Notify;
import org.sufficientlysecure.keychain.ui.util.Notify.Style;
import org.sufficientlysecure.keychain.ui.util.QrCodeUtils;
public class QrCodeViewActivity extends BaseActivity {
public static final String EXTRA_MASTER_KEY_ID = "master_key_id";
private ImageView qrCodeImageView;
private Bitmap qrCode;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setFullScreenDialogClose(v -> ActivityCompat.finishAfterTransition(QrCodeViewActivity.this));
qrCodeImageView = findViewById(R.id.qr_code_image);
CardView mQrCodeLayout = findViewById(R.id.qr_code_image_layout);
mQrCodeLayout.setOnClickListener(v -> ActivityCompat.finishAfterTransition(QrCodeViewActivity.this));
if (!getIntent().hasExtra(EXTRA_MASTER_KEY_ID)) {
throw new IllegalArgumentException("Missing required extra master_key_id");
}
UnifiedKeyInfoViewModel viewModel = ViewModelProviders.of(this).get(UnifiedKeyInfoViewModel.class);
viewModel.setMasterKeyId(getIntent().getLongExtra(EXTRA_MASTER_KEY_ID, 0L));
viewModel.getUnifiedKeyInfoLiveData(getApplicationContext()).observe(this, this::onLoadUnifiedKeyInfo);
qrCodeImageView.getViewTreeObserver().addOnGlobalLayoutListener(() -> {
if (qrCode != null) {
Bitmap scaled = Bitmap.createScaledBitmap(qrCode, qrCodeImageView.getWidth(), qrCodeImageView.getWidth(), false);
qrCodeImageView.setImageBitmap(scaled);
}
});
}
private void onLoadUnifiedKeyInfo(UnifiedKeyInfo unifiedKeyInfo) {
if (unifiedKeyInfo == null) {
Notify.create(this, R.string.error_key_not_found, Style.ERROR).show();
ActivityCompat.finishAfterTransition(QrCodeViewActivity.this);
return;
}
Uri uri = new Uri.Builder()
.scheme(Constants.FINGERPRINT_SCHEME)
.opaquePart(KeyFormattingUtils.convertFingerprintToHex(unifiedKeyInfo.fingerprint()))
.build();
qrCode = QrCodeUtils.getQRCodeBitmap(uri, 0);
qrCodeImageView.requestLayout();
}
@Override
protected void initLayout() {
setContentView(R.layout.qr_code_activity);
}
}