Advance version number to 1.4.0

If the user chooses to keep a history.
There's a switch to enable/disable this feature.
By default, the app won't save anything.

CHANGELOG.md

@@ -1,7 +1,57 @@
 # Change Log
 
+## 1.4.0
+* Save scanned codes and show a history listing
+* Share generated barcodes
+* Add scanning from a shared image
+* Add menu item to switch between camera front/back camera
+* Add dutch and hungarian translation
+
+## 1.3.8
+* Qualify for F-Droid
+
+## 1.3.7
+* Normalize URL schemes
+
+## 1.3.6
+* Fix handling of camera scene modes
+
+## 1.3.5
+* Add german translation
+* Fix handling of data intents
+* Respond to ZXing' SCAN intents
+
+## 1.3.4
+* Fix pre-processing for Android 7+
+* Fix adaptive icons for Android 8+
+
+## 1.3.3
+* Improved pre-processing
+* Added adaptive icon for Android 8+
+* Decrease default magnification to 10%
+
+## 1.3.2
+* Fixed crash when going back very fast
+
+## 1.3.1
+* Changed primary color
+
+## 1.3.0
+* Support tap to focus
+* Save chose zoom level permanently
+* Update ZXing to latest version (3.3.2)
+
+## 1.2.0
+* Added a camera zoom slider
+* Added an unobtrusive wallpaper background
+* Replaced lock marks with just a horizontal line
+* Put toggling torch mode into Floating Action Button
+
+## 1.1.1
+* Brought back inverting every second frame
+
 ## 1.1.0
-* Create barcodes now too
+* Create barcodes
 * Streamlined video pre-processing
 * Decoded content is editable now
 * Fixed position of lock marks on tablets

Makefile

@@ -1,5 +1,5 @@
 PACKAGE = de.markusfisch.android.binaryeye
-APK = app/build/outputs/apk/app-debug.apk
+APK = app/build/outputs/apk/debug/app-debug.apk
 
 all: debug install start
 
@@ -16,9 +16,15 @@ release: lint
 lint:
 	./gradlew lintDebug
 
+sonarqube:
+	./gradlew sonarqube
+
 infer: clean
 	infer -- ./gradlew assembleDebug
 
+test:
+	./gradlew cAT
+
 install:
 	adb $(TARGET) install -r $(APK)
 

README.md

@@ -9,9 +9,9 @@ Unlike many others it works in portrait and landscape orientation, can read
 inverted codes, uses Material Design and doesn't do anything else but decoding
 a barcode.
 
-<a href="https://play.google.com/store/apps/details?id=de.markusfisch.android.binaryeye"><img alt="Get it on Google Play" src="https://play.google.com/intl/en_us/badges/images/apps/en-play-badge.png" height="45px"/></a>
+<a href="https://f-droid.org/en/packages/de.markusfisch.android.binaryeye/"><img alt="Get it on F-Droid" src="https://f-droid.org/badge/get-it-on.png" height="80"/></a> <a href="https://play.google.com/store/apps/details?id=de.markusfisch.android.binaryeye"><img alt="Get it on Google Play" src="https://play.google.com/intl/en_us/badges/images/generic/en_badge_web_generic.png" height="80"/></a>
 
-And it's written in [Kotlin][kotlin] because I've wanted to explore that a
+And it's written in [Kotlin][kotlin] because I wanted to explore that a
 bit more.
 
 [play]: https://play.google.com/store/search?q=barcode%20scanner&c=apps

app/build.gradle

@@ -14,11 +14,19 @@ android {
 		minSdkVersion 9
 		targetSdkVersion sdk_version
 
-		versionCode 3
-		versionName '1.1.0'
+		versionCode 15
+		versionName '1.4.0'
 
-		renderscriptTargetApi 24
+		// it's recommended to set this value to the lowest API level
+		// able to provide all the functionality
+		renderscriptTargetApi 18
 		renderscriptSupportModeEnabled true
+
+		testInstrumentationRunner 'android.support.test.runner.AndroidJUnitRunner'
+	}
+
+	sourceSets {
+		androidTest.java.srcDirs += 'src/androidTest/kotlin'
 	}
 
 	buildTypes {
@@ -44,9 +52,18 @@ android {
 }
 
 dependencies {
-	compile fileTree(dir: 'libs', include: '*')
-	compile "org.jetbrains.kotlin:kotlin-stdlib-jre7:$kotlin_version"
-	compile "com.android.support:appcompat-v7:$support_version"
-	compile "com.android.support:design:$support_version"
-	compile project(':cameraview')
+	androidTestImplementation ('com.android.support.test:runner:1.0.2') {
+		exclude module: 'support-annotations'
+	}
+	androidTestImplementation ('com.android.support.test:rules:1.0.2') {
+		exclude module: 'support-annotations'
+	}
+	testImplementation 'junit:junit:4.12'
+
+	implementation "org.jetbrains.kotlin:kotlin-stdlib:$kotlin_version"
+	implementation "org.jetbrains.kotlinx:kotlinx-coroutines-android:1.0.1"
+	implementation "com.android.support:appcompat-v7:$support_version"
+	implementation "com.android.support:design:$support_version"
+	implementation 'com.google.zxing:core:3.3.3'
+	implementation 'com.github.markusfisch:CameraView:1.8.2'
 }

app/src/androidTest/kotlin/de/markusfisch/android/binaryeye/PreprocessorTest.kt

@@ -0,0 +1,52 @@
+package de.markusfisch.android.binaryeye
+
+import android.support.test.InstrumentationRegistry
+import android.support.test.runner.AndroidJUnit4
+
+import de.markusfisch.android.binaryeye.rs.Preprocessor
+import de.markusfisch.android.binaryeye.zxing.Zxing
+
+import org.junit.Test
+import org.junit.runner.RunWith
+
+import java.util.regex.Pattern
+
+@RunWith(AndroidJUnit4::class)
+class PreprocessorTest {
+	@Test
+	fun processSamples() {
+		val zxing = Zxing()
+		val assets = InstrumentationRegistry.getInstrumentation()
+			.context.assets
+		val pattern = Pattern.compile(
+			"[0-9]+-([0-9]+)x([0-9]+)-([0-9]+)deg.yuv"
+		)
+
+		for (file in assets.list("yuv")) {
+			val m = pattern.matcher(file)
+			if (!m.find() || m.groupCount() < 3) {
+				continue
+			}
+
+			val frameWidth = m.group(1).toInt()
+			val frameHeight = m.group(2).toInt()
+			val frameOrientation = m.group(3).toInt()
+			val frameData = assets.open("yuv/$file").readBytes()
+			val preprocessor = Preprocessor(
+				InstrumentationRegistry.getTargetContext(),
+				frameWidth,
+				frameHeight,
+				frameOrientation
+			)
+			preprocessor.process(frameData)
+			val result = zxing.decode(
+				frameData,
+				preprocessor.outWidth,
+				preprocessor.outHeight
+			)
+			preprocessor.destroy()
+
+			checkNotNull(result) { "no barcode found in $file" }
+		}
+	}
+}

app/src/debug/res/drawable/ic_launcher_foreground.xml

@@ -0,0 +1,83 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="108dp"
+    android:height="108dp"
+    android:viewportWidth="108"
+    android:viewportHeight="108">
+  <path
+      android:fillColor="#FF000000"
+      android:pathData="M52,-884.362h29v71h-29z"/>
+  <path
+      android:fillColor="#FF000000"
+      android:pathData="M52,-884.362h29v71h-29z"/>
+  <path
+      android:fillColor="#FF000000"
+      android:pathData="M52,-884.362h29v71h-29z"/>
+  <path
+      android:fillColor="#FF000000"
+      android:pathData="M32.002,-24.974h3.127v7.656h-3.127z"/>
+  <path
+      android:fillColor="#FF000000"
+      android:pathData="M52,-884.362h29v71h-29z"/>
+  <path
+      android:fillColor="#FF000000"
+      android:pathData="M52,-884.362h29v71h-29z"/>
+  <path
+      android:fillColor="#FF000000"
+      android:pathData="M52,-884.362h29v71h-29z"/>
+  <path
+      android:fillColor="#FF000000"
+      android:pathData="M52,-884.362h29v71h-29z"/>
+  <path
+      android:fillColor="#FF000000"
+      android:pathData="M52,-884.362h29v71h-29z"/>
+  <path
+      android:pathData="m54.826,27.893c-6.851,0 -13.701,2.581 -18.924,7.745 -10.445,10.328 -10.413,27.062 0,37.423l36.218,36.036 37.879,0.902 -0.07,-38.363 -36.18,-35.998c-5.207,-5.18 -12.073,-7.745 -18.924,-7.745z"
+      android:strokeAlpha="1"
+      android:strokeLineJoin="miter"
+      android:strokeWidth="8.60725021"
+      android:fillColor="#000000"
+      android:strokeColor="#00000000"
+      android:fillType="nonZero"
+      android:fillAlpha="0.1254902"
+      android:strokeLineCap="butt"/>
+  <path
+      android:pathData="M28.001,54.118a26.525,26.227 0,1 0,53.049 0a26.525,26.227 0,1 0,-53.049 0z"
+      android:strokeAlpha="1"
+      android:strokeLineJoin="miter"
+      android:strokeWidth="4"
+      android:fillColor="#ffffff"
+      android:strokeColor="#00000000"
+      android:fillAlpha="1"
+      android:strokeLineCap="butt"/>
+  <path
+      android:pathData="M39.26,54.988a14.509,14.346 0,1 0,29.019 0a14.509,14.346 0,1 0,-29.019 0z"
+      android:strokeAlpha="1"
+      android:strokeLineJoin="miter"
+      android:strokeWidth="4"
+      android:fillColor="#000000"
+      android:strokeColor="#00000000"
+      android:fillAlpha="1"
+      android:strokeLineCap="butt"/>
+  <path
+      android:pathData="M54.034,44.513a9.535,9.428 0,1 0,19.07 0a9.535,9.428 0,1 0,-19.07 0z"
+      android:strokeAlpha="1"
+      android:strokeLineJoin="miter"
+      android:strokeWidth="10"
+      android:fillColor="#ffffff"
+      android:strokeColor="#00000000"
+      android:fillAlpha="1"
+      android:strokeLineCap="butt"/>
+  <path
+      android:fillColor="#FF000000"
+      android:pathData="M52,-884.362h29v71h-29z"/>
+  <path
+      android:pathData="m62.745,24.783c-2.055,1.011 -2.87,3.415 -1.847,5.446 0.588,1.168 1.642,1.916 2.839,2.168 -0.564,0.884 -0.835,1.972 -0.925,3.156 -1.782,-0.45 -3.735,-0.191 -5.25,0.639a0.799,0.808 90,0 0,-0.132 0.172,0.799 0.808,90 0,0 -0.132,0.172 0.799,0.808 90,0 0,-0.132 0.39,0.799 0.808,90 0,0 0.044,0.304 0.799,0.808 90,0 0,0.437 0.433,0.799 0.808,90 0,0 0.131,0.043 0.799,0.808 90,0 0,0.131 0.043,0.799 0.808,90 0,0 0.218,-0 0.799,0.808 90,0 0,0.263 -0.129c1.29,-0.707 2.97,-0.892 4.375,-0.425 0.096,0.882 0.341,1.782 0.695,2.683 -0.456,0.072 -0.936,0.177 -1.357,0.343 -1.207,0.48 -2.245,1.302 -3.022,2.244a0.799,0.808 90,0 0,-0.044 0.129,0.799 0.808,90 0,0 -0.088,0.258 0.799,0.808 90,0 0,0.044 0.304,0.799 0.808,90 0,0 0.393,0.563 0.799,0.808 90,0 0,0.394 0.131,0.799 0.808,90 0,0 0.175,-0.086 0.799,0.808 90,0 0,0.175 -0.086,0.799 0.808,90 0,0 0.219,-0.215c0.922,-1.115 2.409,-1.925 3.897,-2.025 0.494,0.845 1.016,1.575 1.658,2.209 -1.232,1.149 -2.043,2.664 -2.239,4.234a0.799,0.808 90,0 0,-0.001 0.215,0.799 0.808,90 0,0 0.174,0.346 0.799,0.808 90,0 0,0.043 0.086,0.799 0.808,90 0,0 0.219,0.217 0.799,0.808 90,0 0,0.131 0.043,0.799 0.808,90 0,0 0.131,0.043 0.799,0.808 90,0 0,0.218 -0,0.799 0.808,90 0,0 0.218,-0 0.799,0.808 90,0 0,0.132 -0.172,0.799 0.808,90 0,0 0.175,-0.086 0.799,0.808 90,0 0,0.044 -0.129,0.799 0.808,90 0,0 0.088,-0.258 0.799,0.808 90,0 0,0.044 -0.129c0.159,-1.272 0.816,-2.493 1.799,-3.371 1.966,1.394 4.252,1.797 6.122,0.876 1.892,-0.931 2.903,-3.018 2.941,-5.444 1.327,-0.259 2.813,0.014 3.936,0.656a0.799,0.808 90,0 0,0.174 0.129,0.799 0.808,90 0,0 0.131,0.043 0.799,0.808 90,0 0,0.088 -0.043,0.799 0.808,90 0,0 0.218,-0 0.799,0.808 90,0 0,0.087 -0.043,0.799 0.808,90 0,0 0.175,-0.086 0.799,0.808 90,0 0,0.132 -0.172,0.799 0.808,90 0,0 0.132,-0.172 0.799,0.808 90,0 0,0.045 -0.562,0.799 0.808,90 0,0 -0.043,-0.086 0.799,0.808 90,0 0,-0.262 -0.303,0.799 0.808,90 0,0 -0.131,-0.043c-1.386,-0.792 -3.097,-1.066 -4.766,-0.787 -0.125,-0.89 -0.309,-1.783 -0.695,-2.683 0.982,-1.073 2.47,-1.756 3.896,-1.81a0.799,0.808 90,0 0,0.131 0.043,0.799 0.808,90 0,0 0.087,-0.043 0.799,0.808 90,0 0,0.482 -0.345,0.799 0.808,90 0,0 0.044,-0.129 0.799,0.808 90,0 0,0.088 -0.476,0.799 0.808,90 0,0 -0.043,-0.086 0.799,0.808 90,0 0,-0.262 -0.303,0.799 0.808,90 0,0 -0.043,-0.086 0.799,0.808 90,0 0,-0.394 -0.131,0.799 0.808,90 0,0 -0.131,-0.043c-1.227,0.048 -2.518,0.369 -3.633,1.031 -0.388,0.233 -0.762,0.548 -1.095,0.864 -0.513,-0.821 -1.093,-1.559 -1.746,-2.166 0.47,-1.39 1.632,-2.605 2.98,-3.195a0.799,0.808 90,0 0,0.175 -0.086,0.799 0.808,90 0,0 0.132,-0.172 0.799,0.808 90,0 0,0.132 -0.172,0.799 0.808,90 0,0 0.132,-0.39 0.799,0.808 90,0 0,-0.043 -0.086,0.799 0.808,90 0,0 -0.174,-0.346 0.799,0.808 90,0 0,-0.043 -0.086,0.799 0.808,90 0,0 -0.437,-0.217 0.799,0.808 90,0 0,-0.175 0.086,0.799 0.808,90 0,0 -0.131,-0.043 0.799,0.808 90,0 0,-0.087 0.043,0.799 0.808,90 0,0 -0.131,-0.043c-1.584,0.694 -2.97,2.079 -3.681,3.756 -1.012,-0.644 -2.048,-1.087 -3.104,-1.173 0.53,-1.101 0.642,-2.414 0.05,-3.59 -1.023,-2.031 -3.541,-2.795 -5.596,-1.783z"
+      android:fillColor="#ff2a2a"
+      android:strokeColor="#00000000"
+      android:fillAlpha="1"/>
+  <path
+      android:pathData="m66.624,32.489c0.281,-0.138 1.896,2.465 3.62,5.889 1.724,3.424 2.893,6.354 2.613,6.492 -0.281,0.138 -1.94,-2.551 -3.663,-5.975 -1.724,-3.424 -2.85,-6.268 -2.569,-6.406z"
+      android:fillColor="#d40000"
+      android:strokeColor="#00000000"
+      android:fillAlpha="1"/>
+</vector>

app/src/main/AndroidManifest.xml

@@ -3,20 +3,19 @@
 	package="de.markusfisch.android.binaryeye"
 	android:installLocation="auto">
 	<supports-screens
-		android:anyDensity="true"
 		android:largeScreens="true"
-		android:normalScreens="true"
-		android:resizeable="true"
-		android:smallScreens="true"
 		android:xlargeScreens="true"/>
 	<uses-permission android:name="android.permission.CAMERA"/>
 	<uses-permission android:name="android.permission.VIBRATE"/>
+	<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
 	<uses-feature android:name="android.hardware.camera"/>
 	<uses-feature android:name="android.hardware.camera.autofocus"/>
 	<application
 		tools:ignore="UnusedAttribute"
+		android:name=".app.BinaryEyeApp"
 		android:allowBackup="true"
 		android:fullBackupContent="true"
+		android:supportsRtl="true"
 		android:label="@string/app_name"
 		android:icon="@mipmap/ic_launcher"
 		android:theme="@style/AppTheme">
@@ -30,13 +29,22 @@
 			</intent-filter>
 		</activity>
 		<activity
-			android:name=".activity.MainActivity"
+			android:name=".activity.CameraActivity"
 			android:label="@string/scan_code">
-			<intent-filter>
+			<intent-filter android:label="@string/compose_barcode">
 				<action android:name="android.intent.action.SEND"/>
 				<category android:name="android.intent.category.DEFAULT"/>
 				<data android:mimeType="text/plain"/>
 			</intent-filter>
+			<intent-filter android:label="@string/decode_barcode">
+				<action android:name="android.intent.action.SEND"/>
+				<category android:name="android.intent.category.DEFAULT"/>
+				<data android:mimeType="image/*"/>
+			</intent-filter>
+			<intent-filter>
+				<action android:name="com.google.zxing.client.android.SCAN"/>
+				<category android:name="android.intent.category.DEFAULT"/>
+			</intent-filter>
 			<intent-filter>
 				<action android:name="android.intent.action.VIEW"/>
 				<category android:name="android.intent.category.DEFAULT"/>
@@ -47,5 +55,17 @@
 					android:scheme="http"/>
 			</intent-filter>
 		</activity>
+		<activity
+			android:name=".activity.MainActivity"
+			android:label="@string/app_name"/>
+		<provider
+			android:name="android.support.v4.content.FileProvider"
+			android:authorities="${applicationId}.provider"
+			android:exported="false"
+			android:grantUriPermissions="true">
+			<meta-data
+				android:name="android.support.FILE_PROVIDER_PATHS"
+				android:resource="@xml/file_paths"/>
+		</provider>
 	</application>
 </manifest>

app/src/main/kotlin/de/markusfisch/android/binaryeye/activity/CameraActivity.kt

@@ -0,0 +1,488 @@
+package de.markusfisch.android.binaryeye.activity
+
+import com.google.zxing.Result
+
+import de.markusfisch.android.cameraview.widget.CameraView
+
+import de.markusfisch.android.binaryeye.app.db
+import de.markusfisch.android.binaryeye.app.initSystemBars
+import de.markusfisch.android.binaryeye.app.prefs
+import de.markusfisch.android.binaryeye.rs.Preprocessor
+import de.markusfisch.android.binaryeye.zxing.Zxing
+import de.markusfisch.android.binaryeye.R
+
+import android.content.Context
+import android.content.Intent
+import android.content.pm.PackageManager
+import android.graphics.Bitmap
+import android.hardware.Camera
+import android.net.Uri
+import android.os.Bundle
+import android.os.Parcelable
+import android.os.Vibrator
+import android.provider.MediaStore
+import android.support.v4.app.ActivityCompat
+import android.support.v4.content.ContextCompat
+import android.support.v7.app.AppCompatActivity
+import android.support.v7.widget.Toolbar
+import android.view.Menu
+import android.view.MenuItem
+import android.view.View
+import android.widget.SeekBar
+import android.widget.Toast
+
+import kotlinx.coroutines.GlobalScope
+import kotlinx.coroutines.launch
+
+import java.io.IOException
+
+class CameraActivity : AppCompatActivity() {
+	private val zxing = Zxing()
+	private val decodingRunnable = Runnable {
+		while (!Thread.currentThread().isInterrupted()) {
+			val result = decodeFrame()
+			if (result != null) {
+				cameraView.post { found(result) }
+				break
+			}
+		}
+	}
+
+	private lateinit var vibrator: Vibrator
+	private lateinit var cameraView: CameraView
+	private lateinit var zoomBar: SeekBar
+
+	private var decodingThread: Thread? = null
+	private var preprocessor: Preprocessor? = null
+	private var frameData: ByteArray? = null
+	private var frameWidth: Int = 0
+	private var frameHeight: Int = 0
+	private var frameOrientation: Int = 0
+	private var invert = false
+	private var flash = false
+	private var returnResult = false
+	private var frontFacing = false
+
+	override fun onRequestPermissionsResult(
+		requestCode: Int,
+		permissions: Array<String>,
+		grantResults: IntArray
+	) {
+		when (requestCode) {
+			REQUEST_CAMERA -> if (grantResults.size > 0 &&
+				grantResults[0] != PackageManager.PERMISSION_GRANTED) {
+				Toast.makeText(
+					this,
+					R.string.no_camera_no_fun,
+					Toast.LENGTH_SHORT
+				).show()
+				finish()
+			}
+		}
+	}
+
+	override fun onCreate(state: Bundle?) {
+		super.onCreate(state)
+		setContentView(R.layout.activity_camera)
+
+		initSystemBars(this)
+		setSupportActionBar(findViewById(R.id.toolbar) as Toolbar)
+
+		vibrator = getSystemService(Context.VIBRATOR_SERVICE) as Vibrator
+
+		cameraView = findViewById(R.id.camera_view) as CameraView
+		zoomBar = findViewById(R.id.zoom) as SeekBar
+
+		initCameraView()
+		initZoomBar()
+		restoreZoom()
+		initFlashFab(findViewById(R.id.flash))
+
+		if (intent?.action == Intent.ACTION_SEND) {
+			if ("text/plain" == intent.type) {
+				handleSendText(intent)
+			} else if (intent.type?.startsWith("image/") == true) {
+				handleSendImage(intent)
+			}
+		}
+	}
+
+	override fun onDestroy() {
+		super.onDestroy()
+		preprocessor?.destroy()
+		saveZoom()
+	}
+
+	override fun onResume() {
+		super.onResume()
+		System.gc()
+		returnResult = "com.google.zxing.client.android.SCAN".equals(
+			intent.action
+		)
+		if (hasCameraPermission()) {
+			openCamera()
+		}
+	}
+
+	private fun openCamera() {
+		cameraView.openAsync(
+			CameraView.findCameraId(
+				if (frontFacing) {
+					Camera.CameraInfo.CAMERA_FACING_FRONT
+				} else {
+					Camera.CameraInfo.CAMERA_FACING_BACK
+				}
+			)
+		)
+	}
+
+	override fun onPause() {
+		super.onPause()
+		closeCamera()
+	}
+
+	private fun closeCamera() {
+		cancelDecoding()
+		cameraView.close()
+	}
+
+	override fun onRestoreInstanceState(savedState: Bundle) {
+		super.onRestoreInstanceState(savedState)
+		zoomBar.max = savedState.getInt(ZOOM_MAX)
+		zoomBar.progress = savedState.getInt(ZOOM_LEVEL)
+	}
+
+	override fun onSaveInstanceState(outState: Bundle) {
+		outState.putInt(ZOOM_MAX, zoomBar.max)
+		outState.putInt(ZOOM_LEVEL, zoomBar.progress)
+		super.onSaveInstanceState(outState)
+	}
+
+	override fun onCreateOptionsMenu(menu: Menu): Boolean {
+		menuInflater.inflate(R.menu.activity_camera, menu)
+		return true
+	}
+
+	override fun onOptionsItemSelected(item: MenuItem): Boolean {
+		return when (item.itemId) {
+			R.id.create -> {
+				startActivity(MainActivity.getEncodeIntent(this))
+				true
+			}
+			R.id.history -> {
+				startActivity(MainActivity.getHistoryIntent(this))
+				true
+			}
+			R.id.switch_camera -> {
+				switchCamera()
+				true
+			}
+			R.id.info -> {
+				openReadme()
+				true
+			}
+			else -> super.onOptionsItemSelected(item)
+		}
+	}
+
+	private fun switchCamera() {
+		closeCamera()
+		frontFacing = frontFacing xor true
+		openCamera()
+	}
+
+	private fun openReadme() {
+		startActivity(
+			Intent(
+				Intent.ACTION_VIEW, Uri.parse(
+					"https://github.com/markusfisch/BinaryEye/blob/master/README.md"
+				)
+			)
+		)
+	}
+
+	private fun handleSendText(intent: Intent) {
+		var text = intent.getStringExtra(Intent.EXTRA_TEXT)
+		if (text?.isEmpty() == true) {
+			startActivity(MainActivity.getEncodeIntent(this, text, true))
+			finish()
+		}
+	}
+
+	private fun handleSendImage(intent: Intent) {
+		var uri = intent.getParcelableExtra<Parcelable>(Intent.EXTRA_STREAM) as? Uri
+		if (uri == null) {
+			return
+		}
+		val bitmap = try {
+			MediaStore.Images.Media.getBitmap(contentResolver, uri)
+		} catch (e: IOException) {
+			null
+		}
+		if (bitmap == null) {
+			Toast.makeText(
+				this,
+				R.string.error_no_content,
+				Toast.LENGTH_SHORT
+			).show()
+			return
+		}
+		val result = zxing.decode(downsizeIfBigger(bitmap, 1024))
+		if (result != null) {
+			showResult(result)
+			finish()
+			return
+		}
+		Toast.makeText(
+			this,
+			R.string.no_barcode_found,
+			Toast.LENGTH_SHORT
+		).show()
+		finish()
+	}
+
+	private fun hasCameraPermission(): Boolean {
+		val permission = android.Manifest.permission.CAMERA
+
+		if (ContextCompat.checkSelfPermission(this, permission) !=
+			PackageManager.PERMISSION_GRANTED) {
+			ActivityCompat.requestPermissions(
+				this, arrayOf(permission),
+				REQUEST_CAMERA
+			)
+			return false
+		}
+
+		return true
+	}
+
+	private fun initCameraView() {
+		cameraView.setUseOrientationListener(true)
+		cameraView.setTapToFocus()
+		cameraView.setOnCameraListener(object : CameraView.OnCameraListener {
+			override fun onConfigureParameters(
+				parameters: Camera.Parameters
+			) {
+				if (parameters.isZoomSupported()) {
+					val max = parameters.getMaxZoom()
+					if (zoomBar.max != max) {
+						zoomBar.max = max
+						zoomBar.progress = max / 10
+						saveZoom()
+					}
+					parameters.setZoom(zoomBar.progress)
+				} else {
+					zoomBar.visibility = View.GONE
+				}
+				val sceneModes = parameters.supportedSceneModes
+				sceneModes?.let {
+					for (mode in sceneModes) {
+						if (mode.equals(Camera.Parameters.SCENE_MODE_BARCODE)) {
+							parameters.sceneMode = mode
+							break
+						}
+					}
+				}
+				CameraView.setAutoFocus(parameters)
+			}
+
+			override fun onCameraError() {
+				Toast.makeText(
+					this@CameraActivity,
+					R.string.camera_error,
+					Toast.LENGTH_SHORT
+				).show()
+				finish()
+			}
+
+			override fun onCameraReady(camera: Camera) {
+				frameWidth = cameraView.frameWidth
+				frameHeight = cameraView.frameHeight
+				frameOrientation = cameraView.frameOrientation
+				camera.setPreviewCallback { data, _ -> frameData = data }
+			}
+
+			override fun onPreviewStarted(camera: Camera) {
+				startDecoding()
+			}
+
+			override fun onCameraStopping(camera: Camera) {
+				cancelDecoding()
+				camera.setPreviewCallback(null)
+			}
+		})
+	}
+
+	private fun initZoomBar() {
+		zoomBar.setOnSeekBarChangeListener(object :
+			SeekBar.OnSeekBarChangeListener {
+			override fun onProgressChanged(
+				seekBar: SeekBar,
+				progress: Int,
+				fromUser: Boolean
+			) {
+				setZoom(progress)
+			}
+
+			override fun onStartTrackingTouch(seekBar: SeekBar) {}
+
+			override fun onStopTrackingTouch(seekBar: SeekBar) {}
+		})
+	}
+
+	private fun setZoom(zoom: Int) {
+		val camera: Camera? = cameraView.getCamera()
+		camera?.let {
+			try {
+				val params = camera.getParameters()
+				params.setZoom(zoom)
+				camera.setParameters(params)
+			} catch (e: RuntimeException) {
+				// ignore; there's nothing we can do
+			}
+		}
+	}
+
+	private fun saveZoom() {
+		val editor = prefs.preferences.edit()
+		editor.putInt(ZOOM_MAX, zoomBar.max)
+		editor.putInt(ZOOM_LEVEL, zoomBar.progress)
+		editor.apply()
+	}
+
+	private fun restoreZoom() {
+		zoomBar.max = prefs.preferences.getInt(ZOOM_MAX, zoomBar.max)
+		zoomBar.progress = prefs.preferences.getInt(
+			ZOOM_LEVEL,
+			zoomBar.progress
+		)
+	}
+
+	private fun initFlashFab(fab: View) {
+		if (!packageManager.hasSystemFeature(
+				PackageManager.FEATURE_CAMERA_FLASH
+			)) {
+			fab.visibility = View.GONE
+		} else {
+			fab.setOnClickListener { _ ->
+				toggleTorchMode()
+			}
+		}
+	}
+
+	private fun toggleTorchMode() {
+		val camera = cameraView.getCamera()
+		val parameters = camera?.getParameters()
+		parameters?.setFlashMode(
+			if (flash) {
+				Camera.Parameters.FLASH_MODE_OFF
+			} else {
+				Camera.Parameters.FLASH_MODE_TORCH
+			}
+		)
+		flash = flash xor true
+		parameters?.let { camera.setParameters(parameters) }
+	}
+
+	private fun startDecoding() {
+		frameData = null
+		decodingThread = Thread(decodingRunnable)
+		decodingThread?.start()
+	}
+
+	private fun cancelDecoding() {
+		if (decodingThread != null) {
+			decodingThread?.interrupt()
+			try {
+				decodingThread?.join()
+			} catch (e: InterruptedException) {
+				// parent thread was interrupted
+			}
+			decodingThread = null
+		}
+	}
+
+	private fun decodeFrame(): Result? {
+		var fd = frameData
+		fd ?: return null
+		if (preprocessor == null) {
+			preprocessor = Preprocessor(
+				this,
+				frameWidth,
+				frameHeight,
+				frameOrientation
+			)
+		}
+		var pp = preprocessor
+		pp ?: return null
+		pp.process(fd)
+		invert = invert xor true
+		return zxing.decode(
+			fd,
+			pp.outWidth,
+			pp.outHeight,
+			invert
+		)
+	}
+
+	private fun found(result: Result) {
+		cancelDecoding()
+		vibrator.vibrate(100)
+		showResult(result)
+	}
+
+	private fun showResult(result: Result) {
+		if (prefs.useHistory) {
+			GlobalScope.launch {
+				db.insertScan(
+					System.currentTimeMillis(),
+					result.text,
+					result.barcodeFormat.toString()
+				)
+			}
+		}
+
+		if (returnResult) {
+			val resultIntent = Intent()
+			resultIntent.putExtra("SCAN_RESULT", result.text)
+			setResult(RESULT_OK, resultIntent)
+			finish()
+			return
+		}
+
+		startActivity(
+			MainActivity.getDecodeIntent(
+				this,
+				result.text,
+				result.barcodeFormat
+			)
+		)
+	}
+
+	companion object {
+		private const val REQUEST_CAMERA = 1
+		private const val ZOOM_MAX = "zoom_max"
+		private const val ZOOM_LEVEL = "zoom_level"
+	}
+}
+
+fun downsizeIfBigger(bitmap: Bitmap, max: Int): Bitmap {
+	return if (Math.max(bitmap.width, bitmap.height) > max) {
+		var width: Int = max
+		var height: Int = max
+		if (bitmap.width > bitmap.height) {
+			height = Math.round(
+				width.toFloat() / bitmap.width.toFloat() *
+					bitmap.height.toFloat()
+			)
+		} else {
+			width = Math.round(
+				height.toFloat() / bitmap.height.toFloat() *
+					bitmap.width.toFloat()
+			)
+		}
+		Bitmap.createScaledBitmap(bitmap, width, height, true)
+	} else {
+		bitmap
+	}
+}

app/src/main/kotlin/de/markusfisch/android/binaryeye/activity/MainActivity.kt

@@ -1,46 +1,22 @@
 package de.markusfisch.android.binaryeye.activity
 
-import de.markusfisch.android.cameraview.widget.CameraView
+import com.google.zxing.BarcodeFormat
 
-import de.markusfisch.android.binaryeye.app.addFragment
+import de.markusfisch.android.binaryeye.app.initSystemBars
 import de.markusfisch.android.binaryeye.app.setFragment
-import de.markusfisch.android.binaryeye.fragment.CameraFragment
+import de.markusfisch.android.binaryeye.fragment.DecodeFragment
 import de.markusfisch.android.binaryeye.fragment.EncodeFragment
-import de.markusfisch.android.binaryeye.view.SystemBarMetrics
-import de.markusfisch.android.binaryeye.widget.LockOnView
+import de.markusfisch.android.binaryeye.fragment.HistoryFragment
 import de.markusfisch.android.binaryeye.R
 
+import android.content.Context
 import android.content.Intent
-import android.content.pm.PackageManager
-import android.os.Build
 import android.os.Bundle
-import android.support.v4.app.ActivityCompat
-import android.support.v4.content.ContextCompat
+import android.support.v4.app.Fragment
 import android.support.v7.app.AppCompatActivity
 import android.support.v7.widget.Toolbar
-import android.view.View
-import android.view.Window
-import android.widget.Toast
 
 class MainActivity : AppCompatActivity() {
-	lateinit var cameraView: CameraView
-	lateinit var lockOnView: LockOnView
-
-	override fun onRequestPermissionsResult(
-			requestCode: Int,
-			permissions: Array<String>,
-			grantResults: IntArray) {
-		when (requestCode) {
-			REQUEST_CAMERA -> if (grantResults.size > 0 &&
-					grantResults[0] != PackageManager.PERMISSION_GRANTED) {
-				Toast.makeText(this,
-						R.string.no_camera_no_fun,
-						Toast.LENGTH_SHORT).show()
-				finish()
-			}
-		}
-	}
-
 	override fun onSupportNavigateUp(): Boolean {
 		val fm = supportFragmentManager
 		if (fm != null && fm.backStackEntryCount > 0) {
@@ -56,90 +32,69 @@ class MainActivity : AppCompatActivity() {
 		setContentView(R.layout.activity_main)
 		initSystemBars(this)
 
-		cameraView = findViewById(R.id.camera_view) as CameraView
-		lockOnView = findViewById(R.id.lock_on) as LockOnView
-
 		setSupportActionBar(findViewById(R.id.toolbar) as Toolbar)
-		setUpListener()
-		checkPermissions()
+		supportActionBar?.setDisplayHomeAsUpEnabled(true)
 
 		if (state == null) {
-			setFragment(supportFragmentManager, CameraFragment())
-			handleSendText(intent)
+			var fragment: Fragment
+			if (intent?.hasExtra(HISTORY) == true) {
+				fragment = HistoryFragment()
+			} else if (intent?.hasExtra(ENCODE) == true) {
+				fragment = EncodeFragment.newInstance(
+					intent.getStringExtra(ENCODE)
+				)
+			} else if (intent?.hasExtra(DECODE) == true) {
+				fragment = DecodeFragment.newInstance(
+					intent.getStringExtra(DECODE),
+					intent.getSerializableExtra(
+						DECODE_FORMAT
+					) as BarcodeFormat
+				)
+			} else {
+				fragment = DecodeFragment()
+			}
+			setFragment(supportFragmentManager, fragment)
 		}
 	}
 
-	override protected fun onNewIntent(intent: Intent) {
-		super.onNewIntent(intent)
-		handleSendText(intent)
-	}
-
-	private fun checkPermissions() {
-		val permission = android.Manifest.permission.CAMERA
-
-		if (ContextCompat.checkSelfPermission(this, permission) !=
-				PackageManager.PERMISSION_GRANTED) {
-			ActivityCompat.requestPermissions(this, arrayOf(permission),
-					REQUEST_CAMERA)
-		}
-	}
-
-	private fun setUpListener() {
-		supportFragmentManager.addOnBackStackChangedListener { canBack() }
-		canBack()
-	}
-
-	private fun canBack() {
-		supportActionBar?.setDisplayHomeAsUpEnabled(
-				supportFragmentManager.backStackEntryCount > 0)
-	}
-
-	private fun handleSendText(intent: Intent) {
-		val type = intent.getType()
-		var text = intent.getStringExtra(Intent.EXTRA_TEXT)
-		if (!Intent.ACTION_SEND.equals(intent.getAction()) ||
-				!"text/plain".equals(type) ||
-				text.isEmpty()) {
-			return
-		}
-
-		// consume this intent
-		intent.setAction(null)
-
-		addFragment(supportFragmentManager,
-				EncodeFragment.newInstance(text))
-	}
-
 	companion object {
-		private val REQUEST_CAMERA = 1
+		private const val HISTORY = "history"
+		private const val ENCODE = "encode"
+		private const val DECODE = "decode"
+		private const val DECODE_FORMAT = "decode_format"
 
-		private fun initSystemBars(activity: AppCompatActivity?) {
-			val view = activity?.findViewById(R.id.main_layout)
-			if (view != null && setSystemBarColor(activity.window,
-					ContextCompat.getColor(activity,
-							R.color.primary_dark_translucent))) {
-				view.setPadding(
-						0,
-						SystemBarMetrics.getStatusBarHeight(
-								activity.resources),
-						0,
-						0)
-			}
+		fun getHistoryIntent(context: Context): Intent {
+			val intent = Intent(context, MainActivity::class.java)
+			intent.putExtra(HISTORY, true)
+			return intent
 		}
 
-		private fun setSystemBarColor(window: Window, color: Int): Boolean {
-			if (Build.VERSION.SDK_INT < Build.VERSION_CODES.LOLLIPOP) {
-				return false
+		fun getEncodeIntent(
+			context: Context,
+			text: String? = "",
+			isExternal: Boolean = false
+		): Intent {
+			val intent = Intent(context, MainActivity::class.java)
+			intent.putExtra(ENCODE, text)
+			if (isExternal) {
+				intent.addFlags(
+					android.content.Intent.FLAG_ACTIVITY_NO_HISTORY or
+					android.content.Intent.FLAG_ACTIVITY_CLEAR_TASK or
+					android.content.Intent.FLAG_ACTIVITY_NEW_TASK
+				)
 			}
+			return intent
+		}
 
-			window.statusBarColor = color
-			window.navigationBarColor = color
-			window.decorView.systemUiVisibility =
-					View.SYSTEM_UI_FLAG_LAYOUT_STABLE or
-					View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION or
-					View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN
-
-			return true
+		fun getDecodeIntent(
+			context: Context,
+			text: String,
+			format: BarcodeFormat
+		): Intent {
+			val intent = Intent(context, MainActivity::class.java)
+			intent.putExtra(DECODE, text)
+			intent.putExtra(DECODE_FORMAT, format)
+			return intent
 		}
 	}
 }

app/src/main/kotlin/de/markusfisch/android/binaryeye/activity/SplashActivity.kt

@@ -12,7 +12,7 @@ class SplashActivity : AppCompatActivity() {
 		// because that would happen after the app is fully
 		// initialized what is too late
 
-		startActivity(Intent(applicationContext, MainActivity::class.java))
+		startActivity(Intent(applicationContext, CameraActivity::class.java))
 		finish()
 	}
 }

app/src/main/kotlin/de/markusfisch/android/binaryeye/adapter/ScansAdapter.kt

@@ -0,0 +1,59 @@
+package de.markusfisch.android.binaryeye.adapter
+
+import de.markusfisch.android.binaryeye.data.Database
+import de.markusfisch.android.binaryeye.R
+
+import android.content.Context
+import android.database.Cursor
+import android.view.LayoutInflater
+import android.view.View
+import android.view.ViewGroup
+import android.widget.CursorAdapter
+import android.widget.TextView
+
+class ScansAdapter(context: Context, cursor: Cursor) :
+	CursorAdapter(context, cursor, false) {
+	private val timeIndex = cursor.getColumnIndex(Database.SCANS_DATETIME)
+	private val contentIndex = cursor.getColumnIndex(Database.SCANS_CONTENT)
+	private val formatIndex = cursor.getColumnIndex(Database.SCANS_FORMAT)
+
+	override fun newView(
+		context: Context,
+		cursor: Cursor,
+		parent: ViewGroup
+	): View {
+		return LayoutInflater.from(parent.context).inflate(
+			R.layout.row_scan, parent, false
+		)
+	}
+
+	override fun bindView(
+		view: View,
+		context: Context,
+		cursor: Cursor
+	) {
+		val holder = getViewHolder(view)
+		holder.timeView.text = cursor.getString(timeIndex)
+		holder.contentView.text = cursor.getString(contentIndex)
+		holder.formatView.text = cursor.getString(formatIndex)
+	}
+
+	private fun getViewHolder(view: View): ViewHolder {
+		var holder = view.tag as ViewHolder?
+		if (holder == null) {
+			holder = ViewHolder(
+				view.findViewById(R.id.time),
+				view.findViewById(R.id.content),
+				view.findViewById(R.id.format)
+			)
+			view.tag = holder
+		}
+		return holder
+	}
+
+	private data class ViewHolder(
+		val timeView: TextView,
+		val contentView: TextView,
+		val formatView: TextView
+	)
+}

app/src/main/kotlin/de/markusfisch/android/binaryeye/app/BinaryEyeApp.kt

@@ -0,0 +1,17 @@
+package de.markusfisch.android.binaryeye.app
+
+import de.markusfisch.android.binaryeye.data.Database
+import de.markusfisch.android.binaryeye.preference.Preferences
+
+import android.app.Application
+
+val db = Database()
+val prefs = Preferences()
+
+class BinaryEyeApp : Application() {
+	override fun onCreate() {
+		super.onCreate()
+		db.open(this)
+		prefs.init(this)
+	}
+}

app/src/main/kotlin/de/markusfisch/android/binaryeye/app/ContentFrame.kt

@@ -15,7 +15,8 @@ fun addFragment(fm: FragmentManager?, fragment: Fragment) {
 }
 
 private fun getTransaction(
-		fm: FragmentManager,
-		fragment: Fragment): FragmentTransaction {
+	fm: FragmentManager,
+	fragment: Fragment
+): FragmentTransaction {
 	return fm.beginTransaction().replace(R.id.content_frame, fragment)
 }

app/src/main/kotlin/de/markusfisch/android/binaryeye/app/SystemBars.kt

@@ -0,0 +1,100 @@
+package de.markusfisch.android.binaryeye.app
+
+import de.markusfisch.android.binaryeye.R
+
+import android.content.Context
+import android.content.res.Configuration
+import android.content.res.Resources
+import android.graphics.Point
+import android.os.Build
+import android.support.v4.content.ContextCompat
+import android.support.v7.app.AppCompatActivity
+import android.util.TypedValue
+import android.view.View
+import android.view.Window
+
+fun initSystemBars(activity: AppCompatActivity?) {
+	val view = activity?.findViewById(R.id.main_layout)
+	if (view != null &&
+		setSystemBarColor(
+			activity.window,
+			ContextCompat.getColor(
+				activity,
+				R.color.primary_dark_translucent
+			)
+		)
+	) {
+		view.setPadding(0, getStatusBarHeight(activity.resources), 0, 0)
+	}
+}
+
+fun setSystemBarColor(window: Window, color: Int): Boolean {
+	if (Build.VERSION.SDK_INT < Build.VERSION_CODES.LOLLIPOP) {
+		return false
+	}
+
+	window.statusBarColor = color
+	window.navigationBarColor = color
+	window.decorView.systemUiVisibility =
+		View.SYSTEM_UI_FLAG_LAYOUT_STABLE or
+		View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION or
+		View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN
+
+	return true
+}
+
+fun getStatusAndToolBarHeight(context: Context): Int {
+	return getStatusBarHeight(context.resources) + getToolBarHeight(context)
+}
+
+fun getStatusBarHeight(res: Resources): Int {
+	return getIdentifierDimen(res, "status_bar_height")
+}
+
+fun getToolBarHeight(context: Context): Int {
+	val tv = TypedValue()
+	return if (context.theme.resolveAttribute(
+			android.R.attr.actionBarSize,
+			tv,
+			true
+		))
+		TypedValue.complexToDimensionPixelSize(
+			tv.data,
+			context.resources.displayMetrics
+		)
+	else
+		0
+}
+
+fun getNavigationBarSize(res: Resources): Point {
+	val size = Point(0, 0)
+	if (!getIdentifierBoolean(res, "config_showNavigationBar")) {
+		return size
+	}
+	if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB_MR2) {
+		val conf = res.getConfiguration()
+		if (conf.orientation == Configuration.ORIENTATION_LANDSCAPE &&
+			// according to https://developer.android.com/training/multiscreen/screensizes.html#TaskUseSWQuali
+			// only a screen < 600 dp is considered to be a phone
+			// and can move its navigation bar to the side
+			conf.smallestScreenWidthDp < 600) {
+			size.x = getIdentifierDimen(
+				res,
+				"navigation_bar_height_landscape"
+			)
+			return size
+		}
+	}
+	size.y = getIdentifierDimen(res, "navigation_bar_height")
+	return size
+}
+
+private fun getIdentifierBoolean(res: Resources, name: String): Boolean {
+	val id = res.getIdentifier(name, "bool", "android")
+	return id > 0 && res.getBoolean(id)
+}
+
+private fun getIdentifierDimen(res: Resources, name: String): Int {
+	val id = res.getIdentifier(name, "dimen", "android")
+	return if (id > 0) res.getDimensionPixelSize(id) else 0
+}

app/src/main/kotlin/de/markusfisch/android/binaryeye/data/Database.kt

@@ -0,0 +1,91 @@
+package de.markusfisch.android.binaryeye.data
+
+import android.content.ContentValues
+import android.content.Context
+import android.database.sqlite.SQLiteDatabase
+import android.database.sqlite.SQLiteOpenHelper
+import android.text.format.DateFormat
+
+class Database {
+	private lateinit var db: SQLiteDatabase
+
+	fun open(context: Context) {
+		db = OpenHelper(context).writableDatabase
+	}
+
+	fun getScans() = db.rawQuery(
+		"""SELECT
+			$SCANS_ID,
+			$SCANS_DATETIME,
+			$SCANS_CONTENT,
+			$SCANS_FORMAT
+			FROM $SCANS
+			ORDER BY $SCANS_DATETIME DESC
+		""", null
+	)
+
+	fun getScan(id: Long) = db.rawQuery(
+		"""SELECT
+			$SCANS_DATETIME,
+			$SCANS_CONTENT,
+			$SCANS_FORMAT
+			FROM $SCANS
+			WHERE $SCANS_ID = ?
+		""", arrayOf("$id")
+	)
+
+	fun insertScan(timestamp: Long, name: String, code: String): Long {
+		val cv = ContentValues()
+		cv.put(
+			SCANS_DATETIME, DateFormat.format(
+				"yyyy-MM-dd HH:mm:ss",
+				timestamp
+			).toString()
+		)
+		cv.put(SCANS_CONTENT, name)
+		cv.put(SCANS_FORMAT, code)
+		return db.insert(SCANS, null, cv)
+	}
+
+	fun removeScan(id: Long) {
+		db.delete(SCANS, "$SCANS_ID = ?", arrayOf("$id"))
+	}
+
+	fun removeScans() {
+		db.delete(SCANS, null, null)
+	}
+
+	private class OpenHelper(context: Context) :
+		SQLiteOpenHelper(context, "history.db", null, 1) {
+		override fun onCreate(db: SQLiteDatabase) {
+			createScans(db)
+		}
+
+		override fun onUpgrade(
+			db: SQLiteDatabase,
+			oldVersion: Int,
+			newVersion: Int
+		) {
+		}
+	}
+
+	companion object {
+		const val SCANS = "scans"
+		const val SCANS_ID = "_id"
+		const val SCANS_DATETIME = "_datetime"
+		const val SCANS_CONTENT = "content"
+		const val SCANS_FORMAT = "format"
+
+		private fun createScans(db: SQLiteDatabase) {
+			db.execSQL("DROP TABLE IF EXISTS $SCANS")
+			db.execSQL(
+				"""CREATE TABLE $SCANS (
+					$SCANS_ID INTEGER PRIMARY KEY AUTOINCREMENT,
+					$SCANS_DATETIME DATETIME NOT NULL,
+					$SCANS_CONTENT TEXT NOT NULL,
+					$SCANS_FORMAT TEXT NOT NULL
+				)"""
+			)
+		}
+	}
+}

app/src/main/kotlin/de/markusfisch/android/binaryeye/fragment/BarcodeFragment.kt

@@ -3,27 +3,127 @@ package de.markusfisch.android.binaryeye.fragment
 import com.google.zxing.BarcodeFormat
 
 import de.markusfisch.android.binaryeye.zxing.Zxing
+import de.markusfisch.android.binaryeye.BuildConfig
 import de.markusfisch.android.binaryeye.R
 
+import android.content.Intent
+import android.net.Uri
+import android.os.Build
 import android.os.Bundle
 import android.graphics.Bitmap
 import android.support.v4.app.Fragment
+import android.support.v4.content.FileProvider
 import android.view.LayoutInflater
 import android.view.View
 import android.view.ViewGroup
 import android.widget.ImageView
 import android.widget.Toast
 
+import java.io.File
+import java.io.FileOutputStream
+import java.io.IOException
+
+import kotlinx.coroutines.Dispatchers.Main
+import kotlinx.coroutines.GlobalScope
+import kotlinx.coroutines.launch
+
 class BarcodeFragment : Fragment() {
+	override fun onCreateView(
+		inflater: LayoutInflater,
+		container: ViewGroup?,
+		state: Bundle?
+	): View? {
+		activity.setTitle(R.string.view_barcode)
+
+		val view = inflater.inflate(
+			R.layout.fragment_barcode,
+			container,
+			false
+		)
+
+		val args = getArguments()
+		args?.let {
+			val size = args.getInt(SIZE)
+			val bitmap: Bitmap?
+			try {
+				bitmap = Zxing.encodeAsBitmap(
+					args.getString(CONTENT),
+					args.getSerializable(FORMAT) as BarcodeFormat,
+					size,
+					size
+				)
+			} catch (e: Exception) {
+				Toast.makeText(
+					activity,
+					e.message,
+					Toast.LENGTH_SHORT
+				).show()
+				fragmentManager.popBackStack()
+				return null
+			}
+			view.findViewById<ImageView>(R.id.barcode).setImageBitmap(bitmap)
+			view.findViewById<View>(R.id.share).setOnClickListener { _ ->
+				bitmap?.let {
+					share(bitmap)
+				}
+			}
+		}
+
+		return view
+	}
+
+	private fun share(bitmap: Bitmap) {
+		GlobalScope.launch {
+			val file = saveBitmap(bitmap)
+			GlobalScope.launch(Main) {
+				file?.let {
+					val intent = Intent(Intent.ACTION_SEND)
+					intent.putExtra(Intent.EXTRA_STREAM, getUriForFile(file))
+					intent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION)
+					intent.setType("image/png")
+					startActivity(intent)
+				}
+			}
+		}
+	}
+
+	private fun saveBitmap(bitmap: Bitmap): File? {
+		try {
+			val file = File(
+				context.getExternalCacheDir(),
+				"shared_barcode.png"
+			)
+			val fos = FileOutputStream(file)
+			bitmap.compress(Bitmap.CompressFormat.PNG, 90, fos)
+			fos.close()
+			return file
+		} catch (e: IOException) {
+			return null
+		}
+	}
+
+	private fun getUriForFile(file: File): Uri {
+		return if (Build.VERSION.SDK_INT < Build.VERSION_CODES.N) {
+			Uri.fromFile(file)
+		} else {
+			FileProvider.getUriForFile(
+				context,
+				BuildConfig.APPLICATION_ID + ".provider",
+				file
+			)
+		}
+	}
+
 	companion object {
-		private val CONTENT = "content"
-		private val FORMAT = "format"
-		private val SIZE = "size"
+		private const val CONTENT = "content"
+		private const val FORMAT = "format"
+		private const val SIZE = "size"
 
 		fun newInstance(
-				content: String,
-				format: BarcodeFormat,
-				size: Int): Fragment {
+			content: String,
+			format: BarcodeFormat,
+			size: Int
+		): Fragment {
 			val args = Bundle()
 			args.putString(CONTENT, content)
 			args.putSerializable(FORMAT, format)
@@ -33,37 +133,4 @@ class BarcodeFragment : Fragment() {
 			return fragment
 		}
 	}
-
-	override fun onCreateView(
-			inflater: LayoutInflater,
-			container: ViewGroup?,
-			state: Bundle?): View? {
-		activity.setTitle(R.string.view_barcode)
-
-		val view = inflater.inflate(
-				R.layout.fragment_barcode,
-				container,
-				false)
-
-		val args = getArguments()
-		args?.let {
-			val size = args.getInt(SIZE)
-			val bitmap: Bitmap?
-			try {
-				bitmap = Zxing.encodeAsBitmap(
-						args.getString(CONTENT),
-						args.getSerializable(FORMAT) as BarcodeFormat,
-						size,
-						size)
-			} catch (e: Exception) {
-				Toast.makeText(activity, e.message,
-						Toast.LENGTH_SHORT).show()
-				fragmentManager.popBackStack()
-				return null
-			}
-			view.findViewById<ImageView>(R.id.barcode).setImageBitmap(bitmap)
-		}
-
-		return view
-	}
 }

app/src/main/kotlin/de/markusfisch/android/binaryeye/fragment/CameraFragment.kt

@@ -1,242 +0,0 @@
-package de.markusfisch.android.binaryeye.fragment
-
-import com.google.zxing.Result
-import com.google.zxing.ResultPoint
-
-import de.markusfisch.android.cameraview.widget.CameraView
-
-import de.markusfisch.android.binaryeye.activity.MainActivity
-import de.markusfisch.android.binaryeye.app.addFragment
-import de.markusfisch.android.binaryeye.rs.YuvToGray
-import de.markusfisch.android.binaryeye.widget.LockOnView
-import de.markusfisch.android.binaryeye.zxing.Zxing
-import de.markusfisch.android.binaryeye.R
-
-import android.content.Context
-import android.content.Intent
-import android.content.pm.PackageManager
-import android.graphics.Rect
-import android.hardware.Camera
-import android.net.Uri
-import android.os.Bundle
-import android.os.Vibrator
-import android.support.v4.app.Fragment
-import android.view.LayoutInflater
-import android.view.Menu
-import android.view.MenuInflater
-import android.view.MenuItem
-import android.view.View
-import android.view.ViewGroup
-
-class CameraFragment : Fragment() {
-	private val zxing = Zxing()
-	private val decodingRunnable = Runnable {
-		while (decoding) {
-			val result = decodeFrame()
-			if (result != null) {
-				cameraView.post { found(result) }
-				decoding = false
-				break
-			}
-		}
-	}
-
-	private lateinit var vibrator: Vibrator
-	private lateinit var cameraView: CameraView
-	private lateinit var lockOnView: LockOnView
-	private lateinit var yuvToGray: YuvToGray
-
-	private var decoding = false
-	private var decodingThread: Thread? = null
-	private var frameData: ByteArray? = null
-	private var frameWidth: Int = 0
-	private var frameHeight: Int = 0
-	private var frameOrientation: Int = 0
-	private var odd = false
-	private var flash = false
-
-	override fun onCreate(state: Bundle?) {
-		super.onCreate(state)
-		setHasOptionsMenu(true)
-	}
-
-	override fun onCreateView(
-			inflater: LayoutInflater,
-			container: ViewGroup?,
-			state: Bundle?): View? {
-		activity.setTitle(R.string.scan_code)
-		vibrator = activity.getSystemService(
-				Context.VIBRATOR_SERVICE) as Vibrator
-
-		yuvToGray = YuvToGray(context)
-
-		cameraView = (activity as MainActivity).cameraView
-		cameraView.setOnCameraListener(object : CameraView.OnCameraListener {
-			override fun onConfigureParameters(
-					parameters: Camera.Parameters) {}
-
-			override fun onCameraStarted(camera: Camera) {
-				frameWidth = cameraView.frameWidth
-				frameHeight = cameraView.frameHeight
-				frameOrientation = cameraView.frameOrientation
-				camera.setPreviewCallback { data, _ -> frameData = data }
-			}
-
-			override fun onCameraStopping(camera: Camera) {
-				camera.setPreviewCallback(null)
-			}
-		})
-
-		lockOnView = (activity as MainActivity).lockOnView
-
-		val view = inflater.inflate(
-				R.layout.fragment_camera,
-				container,
-				false)
-
-		view.findViewById<View>(R.id.create).setOnClickListener { _ ->
-			addFragment(fragmentManager, EncodeFragment())
-		}
-
-		return view
-	}
-
-	override fun onDestroyView() {
-		super.onDestroyView()
-		yuvToGray.destroy()
-	}
-
-	override fun onResume() {
-		super.onResume()
-		System.gc()
-		lockOnView.visibility = View.VISIBLE
-		cameraView.visibility = View.VISIBLE
-		cameraView.openAsync(CameraView.findCameraId(
-				Camera.CameraInfo.CAMERA_FACING_BACK))
-		startDecoding()
-	}
-
-	override fun onPause() {
-		super.onPause()
-		cancelDecoding()
-		cameraView.close()
-		cameraView.visibility = View.GONE
-		lockOnView.visibility = View.GONE
-	}
-
-	override fun onCreateOptionsMenu(menu: Menu, inflater: MenuInflater) {
-		inflater.inflate(R.menu.fragment_camera, menu)
-		if (!context.packageManager.hasSystemFeature(
-				PackageManager.FEATURE_CAMERA_FLASH)) {
-			menu.findItem(R.id.flash).setVisible(false)
-		}
-	}
-
-	override fun onOptionsItemSelected(item: MenuItem): Boolean {
-		return when (item.itemId) {
-			R.id.flash -> {
-				toggleTorchMode()
-				true
-			}
-			R.id.info -> {
-				openReadme()
-				true
-			}
-			else -> super.onOptionsItemSelected(item)
-		}
-	}
-
-	private fun toggleTorchMode() {
-		val camera = cameraView.getCamera()
-		val parameters = camera?.getParameters()
-		parameters?.setFlashMode(if (flash)
-			Camera.Parameters.FLASH_MODE_OFF
-		else
-			Camera.Parameters.FLASH_MODE_TORCH)
-		flash = flash xor true
-		parameters?.let { camera.setParameters(parameters) }
-	}
-
-	private fun openReadme() {
-		startActivity(Intent(Intent.ACTION_VIEW, Uri.parse(
-				"https://github.com/markusfisch/BinaryEye/blob/master/README.md")))
-	}
-
-	private fun startDecoding() {
-		activity ?: return
-
-		frameData = null
-		decoding = true
-		decodingThread = Thread(decodingRunnable)
-		decodingThread?.start()
-	}
-
-	private fun cancelDecoding() {
-		decoding = false
-		if (decodingThread != null) {
-			var retry = 100
-			while (retry-- > 0) {
-				try {
-					decodingThread?.join()
-					break
-				} catch (e: InterruptedException) {
-					// try again
-				}
-			}
-		}
-	}
-
-	private fun decodeFrame(): Result? {
-		frameData ?: return null
-		return zxing.decodeBitmap(yuvToGray.convert(
-				frameData!!, frameWidth, frameHeight, frameOrientation))
-	}
-
-	private fun found(result: Result) {
-		cancelDecoding()
-		vibrator.vibrate(100)
-		lockOnView.lock(getRelativeBounds(result.resultPoints), 250)
-		lockOnView.postDelayed({
-			addFragment(fragmentManager, DecodeFragment.newInstance(
-					result.text,
-					result.getBarcodeFormat()))
-		}, 500)
-	}
-
-	private fun getRelativeBounds(resultPoints: Array<ResultPoint>): Rect {
-		val fw: Float
-		val fh: Float
-		if (frameOrientation == 90 || frameOrientation == 270) {
-			fw = frameHeight.toFloat()
-			fh = frameWidth.toFloat()
-		} else {
-			fw = frameWidth.toFloat()
-			fh = frameHeight.toFloat()
-		}
-		val viewRect = cameraView.previewRect
-		val xf = fw / viewRect.width()
-		val yf = fh / viewRect.height()
-		val bounds = getBounds(resultPoints)
-		bounds.set(
-				Math.round(bounds.left / xf),
-				Math.round(bounds.top / yf),
-				Math.round(bounds.right / xf),
-				Math.round(bounds.bottom / yf))
-		bounds.offset(viewRect.left, viewRect.top)
-		return bounds
-	}
-
-	private fun getBounds(resultPoints: Array<ResultPoint>): Rect {
-		val bounds = Rect(0xffffff, 0xffffff, 0, 0)
-		for (resultPoint in resultPoints) {
-			val x = Math.round(resultPoint.x)
-			val y = Math.round(resultPoint.y)
-			bounds.set(
-					Math.min(bounds.left, x),
-					Math.min(bounds.top, y),
-					Math.max(bounds.right, x),
-					Math.max(bounds.bottom, y))
-		}
-		return bounds
-	}
-}

app/src/main/kotlin/de/markusfisch/android/binaryeye/fragment/DecodeFragment.kt

@@ -21,20 +21,6 @@ import android.widget.EditText
 import android.widget.Toast
 
 class DecodeFragment : Fragment() {
-	companion object {
-		private val CONTENT = "content"
-		private val FORMAT = "format"
-
-		fun newInstance(content: String, format: BarcodeFormat): Fragment {
-			val args = Bundle()
-			args.putString(CONTENT, content)
-			args.putSerializable(FORMAT, format)
-			val fragment = DecodeFragment()
-			fragment.arguments = args
-			return fragment
-		}
-	}
-
 	private lateinit var contentView: EditText
 	private lateinit var format: BarcodeFormat
 
@@ -44,19 +30,20 @@ class DecodeFragment : Fragment() {
 	}
 
 	override fun onCreateView(
-			inflater: LayoutInflater,
-			container: ViewGroup?,
-			state: Bundle?): View {
+		inflater: LayoutInflater,
+		container: ViewGroup?,
+		state: Bundle?
+	): View {
 		activity.setTitle(R.string.content)
 
 		val view = inflater.inflate(
-				R.layout.fragment_decode,
-				container,
-				false)
+			R.layout.fragment_decode,
+			container,
+			false
+		)
 
 		val content = arguments?.getString(CONTENT) ?: ""
-		format = arguments?.getSerializable(FORMAT) as BarcodeFormat? ?:
-				BarcodeFormat.QR_CODE
+		format = arguments?.getSerializable(FORMAT) as BarcodeFormat? ?: BarcodeFormat.QR_CODE
 
 		contentView = view.findViewById<EditText>(R.id.content)
 		contentView.setText(content)
@@ -83,8 +70,10 @@ class DecodeFragment : Fragment() {
 				true
 			}
 			R.id.create -> {
-				addFragment(fragmentManager,
-						EncodeFragment.newInstance(getContent(), format))
+				addFragment(
+					fragmentManager,
+					EncodeFragment.newInstance(getContent(), format)
+				)
 				true
 			}
 			else -> super.onOptionsItemSelected(item)
@@ -99,24 +88,32 @@ class DecodeFragment : Fragment() {
 		activity ?: return
 
 		val cm = activity.getSystemService(
-				Context.CLIPBOARD_SERVICE) as ClipboardManager
+			Context.CLIPBOARD_SERVICE
+		) as ClipboardManager
 		cm.setText(text)
-		Toast.makeText(activity,
-				R.string.put_into_clipboard,
-				Toast.LENGTH_SHORT).show()
+		Toast.makeText(
+			activity,
+			R.string.put_into_clipboard,
+			Toast.LENGTH_SHORT
+		).show()
 	}
 
 	private fun openUrl(url: String) {
 		if (activity == null || url.isEmpty()) {
 			return
 		}
-		val intent = Intent(Intent.ACTION_VIEW, Uri.parse(url))
+		val intent = Intent(
+			Intent.ACTION_VIEW,
+			Uri.parse(url).normalizeScheme()
+		)
 		if (intent.resolveActivity(activity.getPackageManager()) != null) {
 			startActivity(intent)
 		} else {
-			Toast.makeText(activity,
-					R.string.cannot_resolve_action,
-					Toast.LENGTH_SHORT).show()
+			Toast.makeText(
+				activity,
+				R.string.cannot_resolve_action,
+				Toast.LENGTH_SHORT
+			).show()
 		}
 	}
 
@@ -126,4 +123,18 @@ class DecodeFragment : Fragment() {
 		intent.setType("text/plain")
 		startActivity(intent)
 	}
+
+	companion object {
+		private const val CONTENT = "content"
+		private const val FORMAT = "format"
+
+		fun newInstance(content: String, format: BarcodeFormat): Fragment {
+			val args = Bundle()
+			args.putString(CONTENT, content)
+			args.putSerializable(FORMAT, format)
+			val fragment = DecodeFragment()
+			fragment.arguments = args
+			return fragment
+		}
+	}
 }

app/src/main/kotlin/de/markusfisch/android/binaryeye/fragment/EncodeFragment.kt

@@ -20,55 +20,44 @@ import android.widget.TextView
 import android.widget.Toast
 
 class EncodeFragment : Fragment() {
-	companion object {
-		private val CONTENT = "content"
-		private val FORMAT = "format"
-
-		fun newInstance(
-				content: String,
-				format: BarcodeFormat = BarcodeFormat.AZTEC): Fragment {
-			val args = Bundle()
-			args.putString(CONTENT, content)
-			args.putSerializable(FORMAT, format)
-			val fragment = EncodeFragment()
-			fragment.setArguments(args)
-			return fragment
-		}
-	}
-
 	private lateinit var formatView: Spinner
 	private lateinit var sizeView: TextView
 	private lateinit var sizeBarView: SeekBar
 	private val writers = arrayListOf(
-			BarcodeFormat.AZTEC,
-			BarcodeFormat.CODABAR,
-			BarcodeFormat.CODE_39,
-			BarcodeFormat.CODE_128,
-			BarcodeFormat.DATA_MATRIX,
-			BarcodeFormat.EAN_8,
-			BarcodeFormat.EAN_13,
-			BarcodeFormat.ITF,
-			BarcodeFormat.PDF_417,
-			BarcodeFormat.QR_CODE,
-			BarcodeFormat.UPC_A
+		BarcodeFormat.AZTEC,
+		BarcodeFormat.CODABAR,
+		BarcodeFormat.CODE_39,
+		BarcodeFormat.CODE_128,
+		BarcodeFormat.DATA_MATRIX,
+		BarcodeFormat.EAN_8,
+		BarcodeFormat.EAN_13,
+		BarcodeFormat.ITF,
+		BarcodeFormat.PDF_417,
+		BarcodeFormat.QR_CODE,
+		BarcodeFormat.UPC_A
 	)
 
 	override fun onCreateView(
-			inflater: LayoutInflater,
-			container: ViewGroup?,
-			state: Bundle?): View {
+		inflater: LayoutInflater,
+		container: ViewGroup?,
+		state: Bundle?
+	): View {
 		activity.setTitle(R.string.compose_barcode)
 
 		val view = inflater.inflate(
-				R.layout.fragment_encode,
-				container,
-				false)
+			R.layout.fragment_encode,
+			container,
+			false
+		)
 
 		formatView = view.findViewById<Spinner>(R.id.format)
-		formatView.setAdapter(ArrayAdapter<String>(
+		formatView.setAdapter(
+			ArrayAdapter<String>(
 				activity,
 				android.R.layout.simple_list_item_1,
-				writers.map { it -> it.name }))
+				writers.map { it -> it.name }
+			)
+		)
 
 		sizeView = view.findViewById<TextView>(R.id.size_display)
 		sizeBarView = view.findViewById<SeekBar>(R.id.size_bar)
@@ -79,8 +68,11 @@ class EncodeFragment : Fragment() {
 		val args = getArguments()
 		args?.let {
 			contentView.setText(args.getString(CONTENT))
-			formatView.setSelection(writers.indexOf(
-					args.getSerializable(FORMAT) as BarcodeFormat?))
+			formatView.setSelection(
+				writers.indexOf(
+					args.getSerializable(FORMAT) as BarcodeFormat?
+				)
+			)
 		}
 
 		view.findViewById<View>(R.id.encode).setOnClickListener { v ->
@@ -88,14 +80,20 @@ class EncodeFragment : Fragment() {
 			var size = getSize(sizeBarView.getProgress())
 			val content = contentView.getText().toString()
 			if (content.isEmpty()) {
-				Toast.makeText(v.context, R.string.error_no_content,
-						Toast.LENGTH_SHORT).show()
+				Toast.makeText(
+					v.context,
+					R.string.error_no_content,
+					Toast.LENGTH_SHORT
+				).show()
 			} else {
 				hideSoftKeyboard(contentView)
-				addFragment(fragmentManager, BarcodeFragment.newInstance(
+				addFragment(
+					fragmentManager, BarcodeFragment.newInstance(
 						content,
 						format,
-						size))
+						size
+					)
+				)
 			}
 		}
 
@@ -105,32 +103,51 @@ class EncodeFragment : Fragment() {
 	private fun initSizeBar() {
 		updateSize(sizeBarView.getProgress())
 		sizeBarView.setOnSeekBarChangeListener(
-				object : SeekBar.OnSeekBarChangeListener {
-			override fun onProgressChanged(
+			object : SeekBar.OnSeekBarChangeListener {
+				override fun onProgressChanged(
 					seekBar: SeekBar,
 					progressValue: Int,
-					fromUser: Boolean) {
-				updateSize(progressValue)
-			}
+					fromUser: Boolean
+				) {
+					updateSize(progressValue)
+				}
 
-			override fun onStartTrackingTouch(seekBar: SeekBar) {}
+				override fun onStartTrackingTouch(seekBar: SeekBar) {}
 
-			override fun onStopTrackingTouch(seekBar: SeekBar) {}
-		})
+				override fun onStopTrackingTouch(seekBar: SeekBar) {}
+			})
 	}
 
 	private fun updateSize(power: Int) {
 		val size = getSize(power)
-		sizeView.setText("${size}x${size}")
+		sizeView.setText("${size}x$size")
 	}
 
 	private fun getSize(power: Int) = 128 * (power + 1)
 
 	private fun hideSoftKeyboard(view: View) {
 		val im = activity?.getSystemService(
-				Context.INPUT_METHOD_SERVICE) as InputMethodManager?
+			Context.INPUT_METHOD_SERVICE
+		) as InputMethodManager?
 		im?.let {
 			im.hideSoftInputFromWindow(view.getWindowToken(), 0)
 		}
 	}
+
+	companion object {
+		private const val CONTENT = "content"
+		private const val FORMAT = "format"
+
+		fun newInstance(
+			content: String,
+			format: BarcodeFormat = BarcodeFormat.AZTEC
+		): Fragment {
+			val args = Bundle()
+			args.putString(CONTENT, content)
+			args.putSerializable(FORMAT, format)
+			val fragment = EncodeFragment()
+			fragment.setArguments(args)
+			return fragment
+		}
+	}
 }

app/src/main/kotlin/de/markusfisch/android/binaryeye/fragment/HistoryFragment.kt

@@ -0,0 +1,149 @@
+package de.markusfisch.android.binaryeye.fragment
+
+import com.google.zxing.BarcodeFormat
+
+import de.markusfisch.android.binaryeye.adapter.ScansAdapter
+import de.markusfisch.android.binaryeye.app.db
+import de.markusfisch.android.binaryeye.app.addFragment
+import de.markusfisch.android.binaryeye.app.prefs
+import de.markusfisch.android.binaryeye.data.Database
+import de.markusfisch.android.binaryeye.fragment.DecodeFragment
+import de.markusfisch.android.binaryeye.R
+
+import android.app.AlertDialog
+import android.content.Context
+import android.os.Bundle
+import android.support.v4.app.Fragment
+import android.support.v7.widget.SwitchCompat
+import android.view.LayoutInflater
+import android.view.View
+import android.view.ViewGroup
+import android.widget.ListView
+
+import kotlinx.coroutines.Dispatchers.Main
+import kotlinx.coroutines.GlobalScope
+import kotlinx.coroutines.launch
+
+class HistoryFragment : Fragment() {
+	private lateinit var listView: ListView
+	private lateinit var fab: View
+
+	override fun onCreateView(
+		inflater: LayoutInflater,
+		container: ViewGroup?,
+		state: Bundle?
+	): View {
+		activity.setTitle(R.string.history)
+
+		val view = inflater.inflate(
+			R.layout.fragment_history,
+			container,
+			false
+		)
+
+		val useHistorySwitch = view.findViewById(
+			R.id.use_history
+		) as SwitchCompat
+		initHistorySwitch(useHistorySwitch)
+
+		listView = view.findViewById(R.id.scans)
+		listView.emptyView = useHistorySwitch
+		listView.setOnItemClickListener { _, _, _, id ->
+			showScan(id)
+		}
+		listView.setOnItemLongClickListener { _, v, _, id ->
+			askToRemoveScan(v.context, id)
+			true
+		}
+
+		fab = view.findViewById(R.id.clear)
+		fab.setOnClickListener { v ->
+			askToRemoveAllScans(v.context)
+		}
+
+		return view
+	}
+
+	override fun onDestroy() {
+		super.onDestroy()
+		(listView.adapter as ScansAdapter?)?.changeCursor(null)
+	}
+
+	override fun onResume() {
+		super.onResume()
+		update(context)
+	}
+
+	private fun initHistorySwitch(switchView: SwitchCompat) {
+		switchView.setOnCheckedChangeListener { _, isChecked ->
+			prefs.useHistory = isChecked
+		}
+		if (prefs.useHistory) {
+			switchView.toggle()
+		}
+	}
+
+	private fun update(context: Context) {
+		GlobalScope.launch {
+			val cursor = db.getScans()
+			GlobalScope.launch(Main) {
+				fab.visibility = if (cursor != null && cursor.getCount() > 0) {
+					View.VISIBLE
+				} else {
+					View.GONE
+				}
+				if (listView.adapter == null) {
+					listView.adapter = ScansAdapter(context, cursor)
+				} else {
+					val adapter = listView.adapter as ScansAdapter
+					adapter.changeCursor(cursor)
+					adapter.notifyDataSetChanged()
+				}
+			}
+		}
+	}
+
+	private fun showScan(id: Long) {
+		val cursor = db.getScan(id)
+		if (cursor != null && cursor.moveToFirst()) {
+			val contentIndex = cursor.getColumnIndex(Database.SCANS_CONTENT)
+			val formatIndex = cursor.getColumnIndex(Database.SCANS_FORMAT)
+			try {
+				addFragment(
+					fragmentManager,
+					DecodeFragment.newInstance(
+						cursor.getString(contentIndex),
+						BarcodeFormat.valueOf(cursor.getString(formatIndex))
+					)
+				)
+			} catch (e: IllegalArgumentException) {
+				// shouldn't ever happen
+			}
+		}
+		cursor?.close()
+	}
+
+	private fun askToRemoveScan(context: Context, id: Long) {
+		AlertDialog.Builder(context)
+			.setMessage(R.string.really_remove_scan)
+			.setPositiveButton(android.R.string.ok) { _, _ ->
+				db.removeScan(id)
+				update(context)
+			}
+			.setNegativeButton(android.R.string.cancel) { _, _ ->
+			}
+			.show()
+	}
+
+	private fun askToRemoveAllScans(context: Context) {
+		AlertDialog.Builder(context)
+			.setMessage(R.string.really_remove_all_scans)
+			.setPositiveButton(android.R.string.ok) { _, _ ->
+				db.removeScans()
+				update(context)
+			}
+			.setNegativeButton(android.R.string.cancel) { _, _ ->
+			}
+			.show()
+	}
+}

app/src/main/kotlin/de/markusfisch/android/binaryeye/preference/Preferences.kt

@@ -0,0 +1,34 @@
+package de.markusfisch.android.binaryeye.preference
+
+import android.content.Context
+import android.content.SharedPreferences
+import android.preference.PreferenceManager
+
+class Preferences {
+	lateinit var preferences: SharedPreferences
+
+	var useHistory = false
+		set(value) {
+			setBoolean(USE_HISTORY, value)
+			field = value
+		}
+
+	fun init(context: Context) {
+		preferences = PreferenceManager.getDefaultSharedPreferences(context)
+		update()
+	}
+
+	fun update() {
+		useHistory = preferences.getBoolean(USE_HISTORY, useHistory)
+	}
+
+	private fun setBoolean(label: String, value: Boolean) {
+		val editor = preferences.edit()
+		editor.putBoolean(label, value)
+		editor.apply()
+	}
+
+	companion object {
+		const val USE_HISTORY = "use_history"
+	}
+}

app/src/main/kotlin/de/markusfisch/android/binaryeye/rs/Preprocessor.kt

@@ -0,0 +1,133 @@
+package de.markusfisch.android.binaryeye.rs
+
+import de.markusfisch.android.binaryeye.renderscript.ScriptC_rotator
+
+import android.content.Context
+import android.support.v8.renderscript.Allocation
+import android.support.v8.renderscript.Element
+import android.support.v8.renderscript.RenderScript
+import android.support.v8.renderscript.ScriptIntrinsicResize
+import android.support.v8.renderscript.Type
+
+class Preprocessor(
+	context: Context,
+	width: Int,
+	height: Int,
+	val orientation: Int
+) {
+	var outWidth = 0
+	var outHeight = 0
+
+	private val rs = RenderScript.create(context)
+	private val resizeScript = ScriptIntrinsicResize.create(rs)
+	private val rotatorScript = ScriptC_rotator(rs)
+
+	private var yuvType: Type? = null
+	private var yuvAlloc: Allocation? = null
+	private var resizedType: Type? = null
+	private var resizedAlloc: Allocation? = null
+	private var rotatedType: Type? = null
+	private var rotatedAlloc: Allocation? = null
+
+	init {
+		yuvType = Type.createXY(
+			rs,
+			Element.U8(rs),
+			width,
+			height // use only grayscale part
+		)
+		yuvAlloc = Allocation.createTyped(
+			rs,
+			yuvType,
+			Allocation.USAGE_SCRIPT
+		)
+
+		var f = .75f
+		var w = Math.round(width * f)
+		var h = Math.round(height * f)
+
+		resizedType = Type.createXY(
+			rs,
+			Element.U8(rs),
+			w,
+			h
+		)
+		resizedAlloc = Allocation.createTyped(
+			rs,
+			resizedType,
+			Allocation.USAGE_SCRIPT
+		)
+
+		if (orientation == 90 || orientation == 270) {
+			val tmp = w
+			w = h
+			h = tmp
+		}
+
+		outWidth = w
+		outHeight = h
+
+		if (orientation != 0) {
+			rotatedType = Type.createXY(
+				rs,
+				Element.U8(rs),
+				w,
+				h
+			)
+			rotatedAlloc = Allocation.createTyped(
+				rs,
+				rotatedType,
+				Allocation.USAGE_SCRIPT
+			)
+		}
+	}
+
+	fun destroy() {
+		yuvType?.destroy()
+		yuvType = null
+		yuvAlloc?.destroy()
+		yuvAlloc = null
+		resizedType?.destroy()
+		resizedType = null
+		resizedAlloc?.destroy()
+		resizedAlloc = null
+		rotatedType?.destroy()
+		rotatedType = null
+		rotatedAlloc?.destroy()
+		rotatedAlloc = null
+		resizeScript.destroy()
+		rotatorScript.destroy()
+		rs.destroy()
+	}
+
+	fun process(frame: ByteArray) {
+		yuvAlloc?.copyFrom(frame)
+
+		resizeScript.setInput(yuvAlloc)
+		resizeScript.forEach_bicubic(resizedAlloc)
+
+		val t = resizedType
+		if (t == null || orientation == 0) {
+			resizedAlloc?.copyTo(frame)
+		} else {
+			rotatorScript._inImage = resizedAlloc
+			rotatorScript._inWidth = t.x
+			rotatorScript._inHeight = t.y
+			when (orientation) {
+				90 -> rotatorScript.forEach_rotate90(
+					rotatedAlloc,
+					rotatedAlloc
+				)
+				180 -> rotatorScript.forEach_rotate180(
+					rotatedAlloc,
+					rotatedAlloc
+				)
+				270 -> rotatorScript.forEach_rotate270(
+					rotatedAlloc,
+					rotatedAlloc
+				)
+			}
+			rotatedAlloc?.copyTo(frame)
+		}
+	}
+}

app/src/main/kotlin/de/markusfisch/android/binaryeye/rs/YuvToGray.kt

@@ -1,96 +0,0 @@
-package de.markusfisch.android.binaryeye.rs
-
-import de.markusfisch.android.binaryeye.renderscript.ScriptC_rotator
-import de.markusfisch.android.binaryeye.renderscript.ScriptC_yuv2gray
-
-import android.content.Context
-import android.graphics.Bitmap
-import android.support.v8.renderscript.Allocation
-import android.support.v8.renderscript.Element
-import android.support.v8.renderscript.RenderScript
-import android.support.v8.renderscript.Type
-
-class YuvToGray(context: Context) {
-	private val rs: RenderScript = RenderScript.create(context)
-	private val rotatorScript: ScriptC_rotator = ScriptC_rotator(rs)
-	private val yuv2grayScript: ScriptC_yuv2gray = ScriptC_yuv2gray(rs)
-
-	private var yuvType: Type? = null
-	private var rgbaType: Type? = null
-	private var yuvAlloc: Allocation? = null
-	private var rgbaAlloc: Allocation? = null
-	private var destAlloc: Allocation? = null
-	private var dest: Bitmap? = null
-
-	fun destroy() {
-		yuvType?.destroy()
-		yuvType = null
-		rgbaType?.destroy()
-		rgbaType = null
-		yuvAlloc?.destroy()
-		yuvAlloc = null
-		rgbaAlloc?.destroy()
-		rgbaAlloc = null
-		destAlloc?.destroy()
-		destAlloc = null
-		dest?.recycle()
-		dest = null
-		rotatorScript.destroy()
-		yuv2grayScript.destroy()
-		rs.destroy()
-	}
-
-	fun convert(
-			data: ByteArray,
-			width: Int,
-			height: Int,
-			orientation: Int): Bitmap {
-		if (dest == null) {
-			yuvType = Type.createXY(rs, Element.U8(rs), width, height * 3 / 2)
-			yuvAlloc = Allocation.createTyped(rs, yuvType,
-					Allocation.USAGE_SCRIPT)
-			rgbaType = Type.createXY(rs, Element.RGBA_8888(rs), width, height)
-			rgbaAlloc = Allocation.createTyped(rs, rgbaType,
-					Allocation.USAGE_SCRIPT)
-
-			var w = width
-			var h = height
-			when (orientation) {
-				90, 270 -> {
-					val tmp = w
-					w = h
-					h = tmp
-				}
-			}
-
-			dest = Bitmap.createBitmap(w, h, Bitmap.Config.ARGB_8888)
-			destAlloc = Allocation.createFromBitmap(
-					rs,
-					dest,
-					Allocation.MipmapControl.MIPMAP_NONE,
-					Allocation.USAGE_SCRIPT)
-		}
-
-		yuvAlloc?.copyFrom(data)
-		yuv2grayScript._inYUV = yuvAlloc
-		// width/height are uint_32 but Kotlin wants toLong()
-		yuv2grayScript._inWidth = width.toLong()
-		yuv2grayScript._inHeight = height.toLong()
-		yuv2grayScript.forEach_yuv2gray(rgbaAlloc)
-
-		rotatorScript._inImage = rgbaAlloc
-		rotatorScript._inWidth = width
-		rotatorScript._inHeight = height
-
-		when (orientation) {
-			0 -> destAlloc?.copyFrom(rgbaAlloc)
-			90 -> rotatorScript.forEach_rotate90(destAlloc, destAlloc)
-			180 -> rotatorScript.forEach_rotate180(destAlloc, destAlloc)
-			270 -> rotatorScript.forEach_rotate270(destAlloc, destAlloc)
-		}
-
-		destAlloc?.copyTo(dest)
-
-		return dest!!
-	}
-}

app/src/main/kotlin/de/markusfisch/android/binaryeye/view/SystemBarMetrics.kt

@@ -1,62 +0,0 @@
-package de.markusfisch.android.binaryeye.view
-
-import android.content.Context
-import android.content.res.Configuration
-import android.content.res.Resources
-import android.graphics.Point
-import android.os.Build
-import android.util.TypedValue
-
-object SystemBarMetrics {
-	fun getStatusAndToolBarHeight(context: Context): Int {
-		return getStatusBarHeight(context.resources) + getToolBarHeight(context)
-	}
-
-	fun getStatusBarHeight(res: Resources): Int {
-		return getIdentifierDimen(res, "status_bar_height")
-	}
-
-	fun getToolBarHeight(context: Context): Int {
-		val tv = TypedValue()
-		return if (context.theme.resolveAttribute(
-				android.R.attr.actionBarSize,
-				tv,
-				true))
-			TypedValue.complexToDimensionPixelSize(
-					tv.data,
-					context.resources.displayMetrics)
-		else
-			0
-	}
-
-	fun getNavigationBarSize(res:Resources):Point {
-		val size = Point(0, 0)
-		if (!getIdentifierBoolean(res, "config_showNavigationBar")) {
-			return size
-		}
-		if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB_MR2) {
-			val conf = res.getConfiguration()
-			if (conf.orientation == Configuration.ORIENTATION_LANDSCAPE &&
-					// according to https://developer.android.com/training/multiscreen/screensizes.html#TaskUseSWQuali
-					// only a screen < 600 dp is considered to be a phone
-					// and can move its navigation bar to the side
-					conf.smallestScreenWidthDp < 600) {
-				size.x = getIdentifierDimen(res,
-						"navigation_bar_height_landscape")
-				return size
-			}
-		}
-		size.y = getIdentifierDimen(res, "navigation_bar_height")
-		return size
-	}
-
-	private fun getIdentifierBoolean(res:Resources, name:String):Boolean {
-		val id = res.getIdentifier(name, "bool", "android")
-		return id > 0 && res.getBoolean(id)
-	}
-
-	private fun getIdentifierDimen(res: Resources, name: String): Int {
-		val id = res.getIdentifier(name, "dimen", "android")
-		return if (id > 0) res.getDimensionPixelSize(id) else 0
-	}
-}

app/src/main/kotlin/de/markusfisch/android/binaryeye/widget/LockOnView.kt

@@ -1,262 +0,0 @@
-package de.markusfisch.android.binaryeye.widget
-
-import de.markusfisch.android.binaryeye.view.SystemBarMetrics
-import de.markusfisch.android.binaryeye.R
-
-import android.content.Context
-import android.content.res.Resources
-import android.graphics.Bitmap
-import android.graphics.BitmapFactory
-import android.graphics.Canvas
-import android.graphics.Matrix
-import android.graphics.Paint
-import android.graphics.PixelFormat
-import android.graphics.PorterDuff
-import android.graphics.PorterDuffColorFilter
-import android.graphics.Rect
-import android.support.v4.content.ContextCompat
-import android.util.AttributeSet
-import android.view.SurfaceView
-import android.view.SurfaceHolder
-
-class LockOnView : SurfaceView {
-	private val markerPaint = Paint(Paint.ANTI_ALIAS_FLAG)
-	private val restRect = Rect()
-	private val startRect = Rect()
-	private val endRect = Rect()
-	private val currentRect = Rect()
-	private val animationRunnable = Runnable {
-		setAnimationStart()
-		while (running) {
-			val now = System.currentTimeMillis() - animationStart
-			if (now > animationDuration) {
-				break
-			}
-			animateCurrentRect(now)
-			lockCanvasAndDraw()
-		}
-		lockCanvasAndDraw()
-		running = false
-	}
-
-	@Volatile private var running = false
-
-	private lateinit var markerTopLeft: Bitmap
-	private lateinit var markerTopRight: Bitmap
-	private lateinit var markerBottomLeft: Bitmap
-	private lateinit var markerBottomRight: Bitmap
-
-	private var markerSize: Int = 0
-	private var minSize: Int = 0
-	private var thread: Thread? = null
-	private var animationStart: Long = 0
-	private var animationDuration: Long = 0
-
-	init {
-		loadMarkers(context.resources)
-		initSurfaceHolder(context)
-		setZOrderOnTop(true)
-	}
-
-	constructor(context: Context, attrs: AttributeSet) :
-			super(context, attrs) {
-	}
-
-	constructor(context: Context, attrs: AttributeSet, defStyleAttr: Int) :
-			super(context, attrs, defStyleAttr) {
-	}
-
-	fun lock(rect: Rect, ms: Int) {
-		startRect.set(currentRect)
-		if (running) {
-			tintMarkers()
-			fitRect(rect)
-			endRect.set(rect)
-			setAnimationStart()
-		} else {
-			startAnimation(rect, ms)
-		}
-	}
-
-	fun reset() {
-		untintMarkers()
-		startRect.set(restRect)
-		currentRect.set(startRect)
-		lockCanvasAndDraw()
-	}
-
-	private fun loadMarkers(res: Resources) {
-		val dp = res.displayMetrics.density
-		markerTopLeft = BitmapFactory.decodeResource(res, R.drawable.marker)
-		val width = markerTopLeft.width
-		val height = markerTopLeft.height
-		markerSize = Math.max(width, height)
-		minSize = markerSize * 2 + Math.round(dp * 8f)
-		val matrix = Matrix()
-		matrix.setScale(-1f, 1f)
-		markerTopRight = Bitmap.createBitmap(markerTopLeft,
-				0, 0, width, height, matrix, false)
-		matrix.setScale(1f, -1f)
-		markerBottomLeft = Bitmap.createBitmap(markerTopLeft,
-				0, 0, width, height, matrix, false)
-		matrix.setScale(-1f, -1f)
-		markerBottomRight = Bitmap.createBitmap(markerTopLeft,
-				0, 0, width, height, matrix, false)
-	}
-
-	private fun initSurfaceHolder(context: Context) {
-		holder.setFormat(PixelFormat.TRANSPARENT)
-		holder.addCallback(object : SurfaceHolder.Callback {
-			override fun surfaceChanged(
-					holder: SurfaceHolder,
-					format: Int,
-					width: Int,
-					height: Int) {
-				initRestRect(context, width, height)
-				reset()
-			}
-
-			override fun surfaceCreated(holder: SurfaceHolder) {}
-
-			override fun surfaceDestroyed(holder: SurfaceHolder) {
-				cancelAnimation()
-			}
-		})
-	}
-
-	private fun cancelAnimation() {
-		running = false
-		if (thread != null) {
-			var retry = 100
-			while (retry-- > 0) {
-				try {
-					thread?.join()
-					retry = 0
-				} catch (e: InterruptedException) {
-					// try again
-				}
-			}
-		}
-	}
-
-	private fun startAnimation(rect: Rect, ms: Int) {
-		if (running) {
-			return
-		}
-		if (rect == restRect) {
-			untintMarkers()
-		} else {
-			tintMarkers()
-		}
-		running = true
-		fitRect(rect)
-		endRect.set(rect)
-		animationDuration = ms.toLong()
-		thread = Thread(animationRunnable)
-		thread?.start()
-	}
-
-	private fun initRestRect(context: Context, width: Int, height: Int) {
-		val res = context.resources
-		val dp = res.displayMetrics.density
-		val padding = Math.round(16f * dp)
-		var left = padding
-		var top = padding + if (width > height)
-			SystemBarMetrics.getStatusAndToolBarHeight(context)
-		else
-			0
-		val navBar = SystemBarMetrics.getNavigationBarSize(res)
-		val paddingLeftRight = padding * 2 + navBar.x
-		val paddingTopBottom = top + padding + navBar.y
-		val innerWidth = width - paddingLeftRight
-		val innerHeight = height - paddingTopBottom
-		val size = Math.min(innerWidth, innerHeight)
-		left += (innerWidth - size) / 2
-		top += (innerHeight - size) / 2
-		restRect.set(left, top, left + size, top + size)
-	}
-
-	private fun fitRect(rect: Rect) {
-		val width = rect.width()
-		val height = rect.height()
-		if (width < minSize) {
-			val pad = (minSize - width) / 2
-			rect.left -= pad
-			rect.right += pad
-		}
-		if (height < minSize) {
-			val pad = (minSize - height) / 2
-			rect.top -= pad
-			rect.bottom += pad
-		}
-	}
-
-	private fun setAnimationStart() {
-		animationStart = System.currentTimeMillis()
-	}
-
-	private fun animateCurrentRect(now: Long) {
-		currentRect.set(
-				linear(now,
-						startRect.left,
-						endRect.left - startRect.left,
-						animationDuration),
-				linear(now,
-						startRect.top,
-						endRect.top - startRect.top,
-						animationDuration),
-				linear(now,
-						startRect.right,
-						endRect.right - startRect.right,
-						animationDuration),
-				linear(now,
-						startRect.bottom,
-						endRect.bottom - startRect.bottom,
-						animationDuration))
-	}
-
-	private fun linear(
-			time: Long,
-			begin: Int,
-			change: Int,
-			duration: Long): Int = Math.round(
-					change.toFloat() * time / duration + begin)
-
-	private fun lockCanvasAndDraw() {
-		val canvas = holder.lockCanvas()
-		if (canvas != null) {
-			drawMarkers(canvas, currentRect)
-			holder.unlockCanvasAndPost(canvas)
-		}
-	}
-
-	private fun untintMarkers() {
-		markerPaint.colorFilter = null
-	}
-
-	private fun tintMarkers() {
-		markerPaint.colorFilter = PorterDuffColorFilter(
-				ContextCompat.getColor(context, R.color.accent),
-				PorterDuff.Mode.SRC_IN)
-	}
-
-	private fun drawMarkers(canvas: Canvas, rect: Rect) {
-		canvas.drawColor(0, PorterDuff.Mode.CLEAR)
-		canvas.drawBitmap(markerTopLeft,
-				rect.left.toFloat(),
-				rect.top.toFloat(),
-				markerPaint)
-		canvas.drawBitmap(markerTopRight,
-				(rect.right - markerSize).toFloat(),
-				rect.top.toFloat(),
-				markerPaint)
-		canvas.drawBitmap(markerBottomLeft,
-				rect.left.toFloat(),
-				(rect.bottom - markerSize).toFloat(),
-				markerPaint)
-		canvas.drawBitmap(markerBottomRight,
-				(rect.right - markerSize).toFloat(),
-				(rect.bottom - markerSize).toFloat(),
-				markerPaint)
-	}
-}

app/src/main/kotlin/de/markusfisch/android/binaryeye/zxing/Zxing.kt

@@ -6,9 +6,10 @@ import com.google.zxing.DecodeHintType
 import com.google.zxing.LuminanceSource
 import com.google.zxing.MultiFormatReader
 import com.google.zxing.MultiFormatWriter
+import com.google.zxing.PlanarYUVLuminanceSource
+import com.google.zxing.RGBLuminanceSource
 import com.google.zxing.ReaderException
 import com.google.zxing.Result
-import com.google.zxing.RGBLuminanceSource
 import com.google.zxing.common.HybridBinarizer
 
 import android.graphics.Bitmap
@@ -18,60 +19,35 @@ import java.util.EnumMap
 import java.util.EnumSet
 
 class Zxing {
-	companion object {
-		private val black = 0xff000000.toInt()
-		private val white = 0xffffffff.toInt()
-
-		fun encodeAsBitmap(
-				text: String,
-				format: BarcodeFormat,
-				width: Int,
-				height: Int): Bitmap? {
-			val result = MultiFormatWriter().encode(text, format,
-					width, height, null)
-			val w = result.getWidth()
-			val h = result.getHeight()
-			val pixels = IntArray(w * h)
-			var offset = 0
-			for (y in 0..h - 1) {
-				for (x in 0..w - 1) {
-					pixels[offset + x] = if (result.get(x, y))
-						black
-					else
-						white
-				}
-				offset += w
-			}
-			val bitmap = Bitmap.createBitmap(w, h, Bitmap.Config.ARGB_8888)
-			bitmap.setPixels(pixels, 0, width, 0, 0, w, h)
-			return bitmap
-		}
-	}
-
 	private val multiFormatReader: MultiFormatReader = MultiFormatReader()
 
 	init {
 		val decodeFormats = EnumSet.noneOf<BarcodeFormat>(
-				BarcodeFormat::class.java)
-		decodeFormats.addAll(EnumSet.copyOf(Arrays.asList(
-				BarcodeFormat.AZTEC,
-				BarcodeFormat.CODABAR,
-				BarcodeFormat.CODE_39,
-				BarcodeFormat.CODE_93,
-				BarcodeFormat.CODE_128,
-				BarcodeFormat.DATA_MATRIX,
-				BarcodeFormat.EAN_8,
-				BarcodeFormat.EAN_13,
-				BarcodeFormat.ITF,
-				BarcodeFormat.MAXICODE,
-				BarcodeFormat.PDF_417,
-				BarcodeFormat.QR_CODE,
-				BarcodeFormat.RSS_14,
-				BarcodeFormat.RSS_EXPANDED,
-				BarcodeFormat.UPC_A,
-				BarcodeFormat.UPC_E,
-				BarcodeFormat.UPC_EAN_EXTENSION
-		)))
+			BarcodeFormat::class.java
+		)
+		decodeFormats.addAll(
+			EnumSet.copyOf(
+				Arrays.asList(
+					BarcodeFormat.AZTEC,
+					BarcodeFormat.CODABAR,
+					BarcodeFormat.CODE_39,
+					BarcodeFormat.CODE_93,
+					BarcodeFormat.CODE_128,
+					BarcodeFormat.DATA_MATRIX,
+					BarcodeFormat.EAN_8,
+					BarcodeFormat.EAN_13,
+					BarcodeFormat.ITF,
+					BarcodeFormat.MAXICODE,
+					BarcodeFormat.PDF_417,
+					BarcodeFormat.QR_CODE,
+					BarcodeFormat.RSS_14,
+					BarcodeFormat.RSS_EXPANDED,
+					BarcodeFormat.UPC_A,
+					BarcodeFormat.UPC_E,
+					BarcodeFormat.UPC_EAN_EXTENSION
+				)
+			)
+		)
 
 		val hints = EnumMap<DecodeHintType, Any>(DecodeHintType::class.java)
 		hints.put(DecodeHintType.POSSIBLE_FORMATS, decodeFormats)
@@ -79,12 +55,46 @@ class Zxing {
 		multiFormatReader.setHints(hints)
 	}
 
-	fun decodeBitmap(bitmap: Bitmap): Result? {
-		val width = bitmap.width
-		val height = bitmap.height
-		val data = IntArray(width * height)
-		bitmap.getPixels(data, 0, width, 0, 0, width, height)
-		return decodeLuminanceSource(RGBLuminanceSource(width, height, data))
+	fun decode(
+		yuvData: ByteArray,
+		width: Int,
+		height: Int,
+		invert: Boolean = false
+	): Result? {
+		val source = PlanarYUVLuminanceSource(
+			yuvData,
+			width,
+			height,
+			0,
+			0,
+			width,
+			height,
+			false
+		)
+		return decodeLuminanceSource(
+			if (invert) {
+				source.invert()
+			} else {
+				source
+			}
+		)
+	}
+
+	fun decode(bitmap: Bitmap): Result? {
+		val width = bitmap.getWidth()
+		val height = bitmap.getHeight()
+		val pixels = IntArray(width * height)
+		if (bitmap.getConfig() != Bitmap.Config.ARGB_8888) {
+			bitmap.copy(Bitmap.Config.ARGB_8888, true)
+		} else {
+			bitmap
+		}.getPixels(pixels, 0, width, 0, 0, width, height)
+		val source = RGBLuminanceSource(width, height, pixels)
+		val result = decodeLuminanceSource(source)
+		if (result != null) {
+			return result
+		}
+		return decodeLuminanceSource(source.invert())
 	}
 
 	private fun decodeLuminanceSource(source: LuminanceSource): Result? {
@@ -97,4 +107,37 @@ class Zxing {
 			multiFormatReader.reset()
 		}
 	}
+
+	companion object {
+		private const val BLACK = 0xff000000.toInt()
+		private const val WHITE = 0xffffffff.toInt()
+
+		fun encodeAsBitmap(
+			text: String,
+			format: BarcodeFormat,
+			width: Int,
+			height: Int
+		): Bitmap? {
+			val result = MultiFormatWriter().encode(
+				text, format,
+				width, height, null
+			)
+			val w = result.getWidth()
+			val h = result.getHeight()
+			val pixels = IntArray(w * h)
+			var offset = 0
+			for (y in 0..h - 1) {
+				for (x in 0..w - 1) {
+					pixels[offset + x] = if (result.get(x, y))
+						BLACK
+					else
+						WHITE
+				}
+				offset += w
+			}
+			val bitmap = Bitmap.createBitmap(w, h, Bitmap.Config.ARGB_8888)
+			bitmap.setPixels(pixels, 0, width, 0, 0, w, h)
+			return bitmap
+		}
+	}
 }

app/src/main/res/drawable/background_scanner.xml

@@ -0,0 +1,7 @@
+<shape xmlns:android="http://schemas.android.com/apk/res/android"
+	android:shape="line"
+	android:gravity="center">
+	<stroke
+		android:width="1dp"
+		android:color="@color/accent"/>
+</shape>

app/src/main/res/drawable/background_splash.xml

@@ -3,6 +3,6 @@
 	<item>
 		<bitmap
 			android:gravity="center"
-			android:src="@mipmap/ic_launcher"/>
+			android:src="@drawable/logo"/>
 	</item>
 </layer-list>

app/src/main/res/drawable/background_window.xml

@@ -0,0 +1,8 @@
+<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
+	<item android:drawable="@color/background_color"/>
+	<item>
+		<bitmap
+			android:gravity="top|right"
+			android:src="@drawable/wallpaper"/>
+	</item>
+</layer-list>

app/src/main/res/drawable/ic_action_clear.xml

@@ -0,0 +1,5 @@
+<vector android:height="24dp" android:tint="#FFFFFF"
+    android:viewportHeight="24.0" android:viewportWidth="24.0"
+    android:width="24dp" xmlns:android="http://schemas.android.com/apk/res/android">
+    <path android:fillColor="#FF000000" android:pathData="M6,19c0,1.1 0.9,2 2,2h8c1.1,0 2,-0.9 2,-2L18,7L6,7v12zM8.46,11.88l1.41,-1.41L12,12.59l2.12,-2.12 1.41,1.41L13.41,14l2.12,2.12 -1.41,1.41L12,15.41l-2.12,2.12 -1.41,-1.41L10.59,14l-2.13,-2.12zM15.5,4l-1,-1h-5l-1,1L5,4v2h14L19,4z"/>
+</vector>

app/src/main/res/drawable/ic_action_history.xml

@@ -0,0 +1,5 @@
+<vector android:height="24dp" android:tint="#FFFFFF"
+    android:viewportHeight="24.0" android:viewportWidth="24.0"
+    android:width="24dp" xmlns:android="http://schemas.android.com/apk/res/android">
+    <path android:fillColor="#FF000000" android:pathData="M13,3c-4.97,0 -9,4.03 -9,9L1,12l3.89,3.89 0.07,0.14L9,12L6,12c0,-3.87 3.13,-7 7,-7s7,3.13 7,7 -3.13,7 -7,7c-1.93,0 -3.68,-0.79 -4.94,-2.06l-1.42,1.42C8.27,19.99 10.51,21 13,21c4.97,0 9,-4.03 9,-9s-4.03,-9 -9,-9zM12,8v5l4.28,2.54 0.72,-1.21 -3.5,-2.08L13.5,8L12,8z"/>
+</vector>

app/src/main/res/drawable/ic_action_remove.xml

@@ -0,0 +1,5 @@
+<vector android:height="24dp" android:tint="#FFFFFF"
+    android:viewportHeight="24.0" android:viewportWidth="24.0"
+    android:width="24dp" xmlns:android="http://schemas.android.com/apk/res/android">
+    <path android:fillColor="#FF000000" android:pathData="M12,2C6.48,2 2,6.48 2,12s4.48,10 10,10 10,-4.48 10,-10S17.52,2 12,2zM17,13L7,13v-2h10v2z"/>
+</vector>

app/src/main/res/drawable/ic_action_switch_camera.xml

@@ -0,0 +1,5 @@
+<vector android:height="24dp" android:tint="#FFFFFF"
+    android:viewportHeight="24.0" android:viewportWidth="24.0"
+    android:width="24dp" xmlns:android="http://schemas.android.com/apk/res/android">
+    <path android:fillColor="#FF000000" android:pathData="M20,4h-3.17L15,2L9,2L7.17,4L4,4c-1.1,0 -2,0.9 -2,2v12c0,1.1 0.9,2 2,2h16c1.1,0 2,-0.9 2,-2L22,6c0,-1.1 -0.9,-2 -2,-2zM15,15.5L15,13L9,13v2.5L5.5,12 9,8.5L9,11h6L15,8.5l3.5,3.5 -3.5,3.5z"/>
+</vector>

app/src/main/res/drawable/ic_launcher_background.xml

@@ -0,0 +1,3 @@
+<shape xmlns:android="http://schemas.android.com/apk/res/android">
+	<solid android:color="#b6d46f"/>
+</shape>

app/src/main/res/drawable/ic_launcher_foreground.xml

@@ -0,0 +1,70 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="108dp"
+    android:height="108dp"
+    android:viewportWidth="108"
+    android:viewportHeight="108">
+  <path
+      android:fillColor="#FF000000"
+      android:pathData="M52,-884.362h29v71h-29z"/>
+  <path
+      android:fillColor="#FF000000"
+      android:pathData="M52,-884.362h29v71h-29z"/>
+  <path
+      android:fillColor="#FF000000"
+      android:pathData="M52,-884.362h29v71h-29z"/>
+  <path
+      android:fillColor="#FF000000"
+      android:pathData="M32.002,-24.974h3.127v7.656h-3.127z"/>
+  <path
+      android:fillColor="#FF000000"
+      android:pathData="M52,-884.362h29v71h-29z"/>
+  <path
+      android:fillColor="#FF000000"
+      android:pathData="M52,-884.362h29v71h-29z"/>
+  <path
+      android:fillColor="#FF000000"
+      android:pathData="M52,-884.362h29v71h-29z"/>
+  <path
+      android:fillColor="#FF000000"
+      android:pathData="M52,-884.362h29v71h-29z"/>
+  <path
+      android:fillColor="#FF000000"
+      android:pathData="M52,-884.362h29v71h-29z"/>
+  <path
+      android:pathData="m54.826,27.893c-6.851,0 -13.701,2.581 -18.924,7.745 -10.445,10.328 -10.413,27.062 0,37.423l36.218,36.036 37.879,0.902 -0.07,-38.363 -36.18,-35.998c-5.207,-5.18 -12.073,-7.745 -18.924,-7.745z"
+      android:strokeAlpha="1"
+      android:strokeLineJoin="miter"
+      android:strokeWidth="8.60725021"
+      android:fillColor="#000000"
+      android:strokeColor="#00000000"
+      android:fillType="nonZero"
+      android:fillAlpha="0.1254902"
+      android:strokeLineCap="butt"/>
+  <path
+      android:pathData="M28.001,54.118a26.525,26.227 0,1 0,53.049 0a26.525,26.227 0,1 0,-53.049 0z"
+      android:strokeAlpha="1"
+      android:strokeLineJoin="miter"
+      android:strokeWidth="4"
+      android:fillColor="#ffffff"
+      android:strokeColor="#00000000"
+      android:fillAlpha="1"
+      android:strokeLineCap="butt"/>
+  <path
+      android:pathData="M39.26,54.988a14.509,14.346 0,1 0,29.019 0a14.509,14.346 0,1 0,-29.019 0z"
+      android:strokeAlpha="1"
+      android:strokeLineJoin="miter"
+      android:strokeWidth="4"
+      android:fillColor="#000000"
+      android:strokeColor="#00000000"
+      android:fillAlpha="1"
+      android:strokeLineCap="butt"/>
+  <path
+      android:pathData="M54.034,44.513a9.535,9.428 0,1 0,19.07 0a9.535,9.428 0,1 0,-19.07 0z"
+      android:strokeAlpha="1"
+      android:strokeLineJoin="miter"
+      android:strokeWidth="10"
+      android:fillColor="#ffffff"
+      android:strokeColor="#00000000"
+      android:fillAlpha="1"
+      android:strokeLineCap="butt"/>
+</vector>

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

@@ -0,0 +1,39 @@
+<merge xmlns:android="http://schemas.android.com/apk/res/android"
+	xmlns:app="http://schemas.android.com/apk/res-auto"
+	xmlns:tools="http://schemas.android.com/tools">
+	<de.markusfisch.android.cameraview.widget.CameraView
+		android:id="@+id/camera_view"
+		android:layout_width="match_parent"
+		android:layout_height="match_parent"/>
+	<RelativeLayout
+		android:id="@+id/main_layout"
+		android:layout_width="match_parent"
+		android:layout_height="match_parent"
+		android:orientation="vertical"
+		android:fitsSystemWindows="true"
+		android:background="@drawable/background_scanner">
+		<include layout="@layout/toolbar"/>
+		<SeekBar
+			android:id="@+id/zoom"
+			android:layout_width="match_parent"
+			android:layout_height="wrap_content"
+			android:layout_alignParentEnd="true"
+			android:layout_alignParentRight="true"
+			android:layout_alignParentBottom="true"
+			android:layout_marginBottom="8dp"
+			android:layout_marginRight="80dp"
+			android:layout_marginEnd="80dp"
+			android:padding="16dp"/>
+		<android.support.design.widget.FloatingActionButton
+			tools:ignore="UnusedAttribute"
+			android:id="@+id/flash"
+			android:layout_width="wrap_content"
+			android:layout_height="wrap_content"
+			android:layout_alignParentEnd="true"
+			android:layout_alignParentRight="true"
+			android:layout_alignParentBottom="true"
+			android:layout_margin="20dp"
+			android:src="@drawable/ic_action_flash"
+			app:elevation="4dp"/>
+	</RelativeLayout>
+</merge>

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

@@ -1,14 +1,4 @@
 <merge xmlns:android="http://schemas.android.com/apk/res/android">
-	<de.markusfisch.android.cameraview.widget.CameraView
-		android:id="@+id/camera_view"
-		android:layout_width="match_parent"
-		android:layout_height="match_parent"
-		android:visibility="gone"/>
-	<de.markusfisch.android.binaryeye.widget.LockOnView
-		android:id="@+id/lock_on"
-		android:layout_width="match_parent"
-		android:layout_height="match_parent"
-		android:visibility="gone"/>
 	<LinearLayout
 		android:id="@+id/main_layout"
 		android:layout_width="match_parent"

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

@@ -1,6 +1,24 @@
-<ImageView
+<RelativeLayout
 	xmlns:android="http://schemas.android.com/apk/res/android"
-	android:id="@+id/barcode"
+	xmlns:app="http://schemas.android.com/apk/res-auto"
+	xmlns:tools="http://schemas.android.com/tools"
 	android:layout_width="match_parent"
-	android:layout_height="match_parent"
-	android:contentDescription="@string/view_barcode"/>
+	android:layout_height="match_parent">
+	<ImageView
+		xmlns:android="http://schemas.android.com/apk/res/android"
+		android:id="@+id/barcode"
+		android:layout_width="match_parent"
+		android:layout_height="match_parent"
+		android:contentDescription="@string/view_barcode"/>
+	<android.support.design.widget.FloatingActionButton
+		tools:ignore="UnusedAttribute"
+		android:id="@+id/share"
+		android:layout_width="wrap_content"
+		android:layout_height="wrap_content"
+		android:layout_alignParentEnd="true"
+		android:layout_alignParentRight="true"
+		android:layout_alignParentBottom="true"
+		android:layout_margin="20dp"
+		android:src="@drawable/ic_action_share"
+		app:elevation="4dp"/>
+</RelativeLayout>

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

@@ -12,7 +12,8 @@
 		android:gravity="start|top"
 		android:imeOptions="flagNoExtractUi"
 		android:inputType="textMultiLine"
-		android:typeface="monospace"/>
+		android:typeface="monospace"
+		android:hint="@string/content"/>
 	<android.support.design.widget.FloatingActionButton
 		tools:ignore="UnusedAttribute"
 		android:id="@+id/share"

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

@@ -4,15 +4,31 @@
 	xmlns:tools="http://schemas.android.com/tools"
 	android:layout_width="match_parent"
 	android:layout_height="match_parent">
+	<ListView
+		android:id="@+id/scans"
+		android:choiceMode="singleChoice"
+		android:layout_width="match_parent"
+		android:layout_height="match_parent"
+		android:divider="@android:color/transparent"
+		android:dividerHeight="1px"/>
+	<android.support.v7.widget.SwitchCompat
+		android:visibility="gone"
+		android:id="@+id/use_history"
+		android:layout_width="match_parent"
+		android:layout_height="wrap_content"
+		android:layout_alignParentTop="true"
+		android:padding="16dp"
+		android:text="@string/use_history"/>
 	<android.support.design.widget.FloatingActionButton
 		tools:ignore="UnusedAttribute"
-		android:id="@+id/create"
+		android:visibility="gone"
+		android:id="@+id/clear"
 		android:layout_width="wrap_content"
 		android:layout_height="wrap_content"
 		android:layout_alignParentEnd="true"
 		android:layout_alignParentRight="true"
 		android:layout_alignParentBottom="true"
 		android:layout_margin="20dp"
-		android:src="@drawable/ic_action_create"
+		android:src="@drawable/ic_action_clear"
 		app:elevation="4dp"/>
 </RelativeLayout>

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

@@ -0,0 +1,28 @@
+<RelativeLayout
+	xmlns:android="http://schemas.android.com/apk/res/android"
+	android:layout_width="match_parent"
+	android:layout_height="match_parent"
+	android:padding="16dp">
+	<TextView
+		android:id="@+id/time"
+		android:layout_width="wrap_content"
+		android:layout_height="wrap_content"
+		android:layout_alignParentLeft="true"
+		android:layout_alignParentStart="true"
+		android:layout_alignParentTop="true"/>
+	<TextView
+		android:id="@+id/format"
+		android:layout_width="wrap_content"
+		android:layout_height="wrap_content"
+		android:gravity="end"
+		android:layout_alignParentRight="true"
+		android:layout_alignParentEnd="true"
+		android:layout_alignParentTop="true"/>
+	<TextView
+		android:id="@+id/content"
+		android:layout_width="match_parent"
+		android:layout_height="wrap_content"
+		android:layout_below="@+id/time"
+		android:layout_marginTop="4dp"
+		android:typeface="monospace"/>
+</RelativeLayout>

app/src/main/res/menu/activity_camera.xml

@@ -0,0 +1,24 @@
+<menu
+	xmlns:android="http://schemas.android.com/apk/res/android"
+	xmlns:material="http://schemas.android.com/apk/res-auto">
+	<item
+		android:id="@+id/history"
+		android:title="@string/history"
+		android:icon="@drawable/ic_action_history"
+		material:showAsAction="ifRoom"/>
+	<item
+		android:id="@+id/create"
+		android:title="@string/compose_barcode"
+		android:icon="@drawable/ic_action_create"
+		material:showAsAction="ifRoom"/>
+	<item
+		android:id="@+id/switch_camera"
+		android:title="@string/switch_camera"
+		android:icon="@drawable/ic_action_switch_camera"
+		material:showAsAction="ifRoom"/>
+	<item
+		android:id="@+id/info"
+		android:title="@string/info"
+		android:icon="@drawable/ic_action_info"
+		material:showAsAction="ifRoom"/>
+</menu>

app/src/main/res/menu/fragment_camera.xml

@@ -1,14 +0,0 @@
-<menu
-	xmlns:android="http://schemas.android.com/apk/res/android"
-	xmlns:material="http://schemas.android.com/apk/res-auto">
-	<item
-		android:id="@+id/info"
-		android:title="@string/info"
-		android:icon="@drawable/ic_action_info"
-		material:showAsAction="ifRoom"/>
-	<item
-		android:id="@+id/flash"
-		android:title="@string/flash"
-		android:icon="@drawable/ic_action_flash"
-		material:showAsAction="ifRoom"/>
-</menu>

app/src/main/res/menu/fragment_history_edit.xml

@@ -0,0 +1,9 @@
+<menu
+	xmlns:android="http://schemas.android.com/apk/res/android"
+	xmlns:material="http://schemas.android.com/apk/res-auto">
+	<item
+		android:id="@+id/remove_scan"
+		android:title="@string/remove_scan"
+		android:icon="@drawable/ic_action_remove"
+		material:showAsAction="ifRoom"/>
+</menu>

app/src/main/res/mipmap-anydpi-v26/ic_launcher.xml

@@ -0,0 +1,4 @@
+<adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">
+	<background android:drawable="@drawable/ic_launcher_background"/>
+	<foreground android:drawable="@drawable/ic_launcher_foreground"/>
+</adaptive-icon>

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

@@ -0,0 +1,26 @@
+<resources>
+	<string name="no_camera_no_fun">Diese App kann ohne Kamerazugriff nicht funktionieren. Tschüss!</string>
+	<string name="camera_error">Auf die Kamera kann nicht zugegriffen werden, bitte versuche es nochmal</string>
+	<string name="scan_code">Code scannen</string>
+	<string name="compose_barcode">Barcode erstellen</string>
+	<string name="decode_barcode">Barcode dekodieren</string>
+	<string name="content">Inhalt</string>
+	<string name="copy_to_clipboard">In die Zwischenablage kopieren</string>
+	<string name="put_into_clipboard">In die Zwischenablage legen</string>
+	<string name="open_url">URL öffnen</string>
+	<string name="cannot_resolve_action">Keine App kann das öffnen</string>
+	<string name="format">Format</string>
+	<string name="size">Größe in Pixeln</string>
+	<string name="input_content_here">Gib den Inhalt hier ein</string>
+	<string name="encode">KODIEREN</string>
+	<string name="error_no_content">Fehlender Inhalt</string>
+	<string name="view_barcode">Barcode ansehen</string>
+	<string name="info">Info</string>
+	<string name="switch_camera">Kamera wechseln</string>
+	<string name="history">Gespeicherte Codes</string>
+	<string name="use_history">Codes speichern</string>
+	<string name="remove_scan">Code entfernen</string>
+	<string name="really_remove_scan">Code wirklich entfernen?</string>
+	<string name="really_remove_all_scans">Alle Codes entfernen?</string>
+	<string name="no_barcode_found">Kein Barcode gefunden</string>
+</resources>

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

@@ -0,0 +1,26 @@
+<resources>
+	<string name="no_camera_no_fun">Ennek az alkalmazásnak nincs semmi értelme kamera-hozzáférés nélkül. Viszlát!</string>
+	<string name="camera_error">Nem lehet hozzáférni a kamerához, próbálja meg újra</string>
+	<string name="scan_code">Kód beolvasása</string>
+	<string name="compose_barcode">Vonalkód létrehozása</string>
+	<string name="decode_barcode">Decode barcode</string>
+	<string name="content">Tartalom</string>
+	<string name="copy_to_clipboard">Másolás a vágólapra</string>
+	<string name="put_into_clipboard">Vágólapra helyezés</string>
+	<string name="open_url">URL megnyitása</string>
+	<string name="cannot_resolve_action">Nincs alkalmazás, amely meg tudná nyitni azt</string>
+	<string name="format">Formátum</string>
+	<string name="size">Méret képpontban</string>
+	<string name="input_content_here">Itt adja meg a tartalmat</string>
+	<string name="encode">KÓDOLÁS</string>
+	<string name="error_no_content">Hiányzó tartalom</string>
+	<string name="view_barcode">Vonalkód megtekintése</string>
+	<string name="info">Információ</string>
+	<string name="switch_camera">Kamera átkapcsolása</string>
+	<string name="history">History</string>
+	<string name="use_history">Save scan history</string>
+	<string name="remove_scan">Remove scan</string>
+	<string name="really_remove_scan">Really remove scan?</string>
+	<string name="really_remove_all_scans">Really remove all scans?</string>
+	<string name="no_barcode_found">No barcode found</string>
+</resources>

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

@@ -0,0 +1,26 @@
+<resources>
+	<string name="no_camera_no_fun">Deze app kan niet werken zonder cameratoegang. Tot ziens.</string>
+	<string name="camera_error">Kan camera niet openen; probeer het opnieuw.</string>
+	<string name="scan_code">Scan een scode</string>
+	<string name="compose_barcode">Scan een barcode</string>
+	<string name="decode_barcode">Decode barcode</string>
+	<string name="content">Inhoud</string>
+	<string name="copy_to_clipboard">Kopiëren naar klembord</string>
+	<string name="put_into_clipboard">Kopieer de inhoud naar het klembord</string>
+	<string name="open_url">URL openen</string>
+	<string name="cannot_resolve_action">Er is geen app aangetroffen die dit kan openen</string>
+	<string name="format">Formaat</string>
+	<string name="size">Grootte, in pixels</string>
+	<string name="input_content_here">Voer hier de inhoud in</string>
+	<string name="encode">CODEREN</string>
+	<string name="error_no_content">Inhoud ontbreekt</string>
+	<string name="view_barcode">Barcode bekijken</string>
+	<string name="info">Informatie</string>
+	<string name="switch_camera">Camera wisselen</string>
+	<string name="history">History</string>
+	<string name="use_history">Save scan history</string>
+	<string name="remove_scan">Remove scan</string>
+	<string name="really_remove_scan">Really remove scan?</string>
+	<string name="really_remove_all_scans">Really remove all scans?</string>
+	<string name="no_barcode_found">No barcode found</string>
+</resources>

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

@@ -3,7 +3,8 @@
 	<color name="primary_translucent">#8222</color>
 	<color name="primary_dark">#111</color>
 	<color name="primary_dark_translucent">#8111</color>
-	<color name="accent">#26e1cf</color>
-	<color name="accent_dark">#16d1bf</color>
+	<color name="accent">#b6d46f</color>
+	<color name="accent_dark">#a6c45f</color>
+	<color name="background_color">#111</color>
 	<color name="button_text">#fff</color>
 </resources>

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

@@ -1,8 +1,9 @@
 <resources>
 	<string name="no_camera_no_fun">This app does not make any sense without camera access. Good bye.</string>
-	<string name="scan_code">Scan a code</string>
-	<string name="flash">Toggle flash</string>
+	<string name="camera_error">Can\'t access camera, please try again</string>
+	<string name="scan_code">Scan code</string>
 	<string name="compose_barcode">Compose barcode</string>
+	<string name="decode_barcode">Decode barcode</string>
 	<string name="content">Content</string>
 	<string name="copy_to_clipboard">Copy to clipboard</string>
 	<string name="put_into_clipboard">Put into clipboard</string>
@@ -15,4 +16,11 @@
 	<string name="error_no_content">Missing content</string>
 	<string name="view_barcode">View barcode</string>
 	<string name="info">Info</string>
+	<string name="switch_camera">Switch camera</string>
+	<string name="history">History</string>
+	<string name="use_history">Save scan history</string>
+	<string name="remove_scan">Remove scan</string>
+	<string name="really_remove_scan">Really remove scan?</string>
+	<string name="really_remove_all_scans">Really remove all scans?</string>
+	<string name="no_barcode_found">No barcode found</string>
 </resources>

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

@@ -3,6 +3,7 @@
 		<item name="colorPrimary">@color/primary</item>
 		<item name="colorPrimaryDark">@color/primary_dark</item>
 		<item name="colorAccent">@color/accent</item>
+		<item name="android:windowBackground">@drawable/background_window</item>
 	</style>
 	<style name="SplashTheme" parent="@style/AppTheme">
 		<item name="android:windowBackground">@drawable/background_splash</item>

app/src/main/res/xml/file_paths.xml

@@ -0,0 +1,3 @@
+<paths xmlns:android="http://schemas.android.com/apk/res/android">
+	<external-path name="external_files" path="."/>
+</paths>

app/src/main/rs/rotator.rs

@@ -5,20 +5,20 @@ rs_allocation inImage;
 int inWidth;
 int inHeight;
 
-uchar4 RS_KERNEL rotate90(uchar4 in, uint32_t x, uint32_t y) {
-	const uchar4 *out = rsGetElementAt(inImage, y, inHeight - 1 - x);
+uchar RS_KERNEL rotate90(uchar in, uint32_t x, uint32_t y) {
+	const uchar *out = rsGetElementAt(inImage, y, inHeight - 1 - x);
 	return *out;
 }
 
-uchar4 RS_KERNEL rotate180(uchar4 in, uint32_t x, uint32_t y) {
-	const uchar4 *out = rsGetElementAt(
+uchar RS_KERNEL rotate180(uchar in, uint32_t x, uint32_t y) {
+	const uchar *out = rsGetElementAt(
 			inImage,
 			inWidth - 1 - x,
 			inHeight - 1 - y);
 	return *out;
 }
 
-uchar4 RS_KERNEL rotate270(uchar4 in, uint32_t x, uint32_t y) {
-	const uchar4 *out = rsGetElementAt(inImage, inWidth - 1 - y, x);
+uchar RS_KERNEL rotate270(uchar in, uint32_t x, uint32_t y) {
+	const uchar *out = rsGetElementAt(inImage, inWidth - 1 - y, x);
 	return *out;
 }

app/src/main/rs/yuv2gray.rs

@@ -1,17 +0,0 @@
-#pragma version(1)
-#pragma rs java_package_name(de.markusfisch.android.binaryeye.renderscript)
-#pragma rs_fp_relaxed
-
-rs_allocation inYUV;
-uint32_t inWidth;
-uint32_t inHeight;
-
-uchar4 RS_KERNEL yuv2gray(uint32_t x, uint32_t y) {
-	uchar Y = rsGetElementAt_uchar(inYUV, x, y);
-	uchar4 out;
-	out.r = Y;
-	out.g = Y;
-	out.b = Y;
-	out.a = 255;
-	return out;
-}

build.gradle

@@ -1,12 +1,13 @@
 buildscript {
-	ext.kotlin_version = '1.1.4-2'
-	ext.tools_version = '2.3.3'
-	ext.build_tools_version = '26.0.0'
-	ext.sdk_version = 26
+	ext.kotlin_version = '1.3.21'
+	ext.tools_version = '3.3.2'
+	ext.build_tools_version = '28.0.3'
+	ext.sdk_version = 28
 	ext.support_version = '25.3.1'
 
 	repositories {
 		jcenter()
+		google()
 		mavenCentral()
 		maven {
 			url "https://plugins.gradle.org/m2/"
@@ -15,14 +16,20 @@ buildscript {
 
 	dependencies {
 		classpath "com.android.tools.build:gradle:$tools_version"
-		classpath 'net.ltgt.gradle:gradle-errorprone-plugin:0.0.8'
+		classpath 'net.ltgt.gradle:gradle-errorprone-plugin:0.0.10'
 		classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
 	}
 }
 
+plugins {
+	id 'org.sonarqube' version '2.6.2'
+}
+
 allprojects {
 	repositories {
 		jcenter()
+		google()
+		maven { url 'https://jitpack.io' }
 	}
 
 	gradle.projectsEvaluated {

cameraview/build.gradle

@@ -1,28 +0,0 @@
-buildscript {
-	repositories {
-		jcenter()
-	}
-
-	dependencies {
-		classpath "com.android.tools.build:gradle:$tools_version"
-	}
-}
-
-apply plugin: 'com.android.library'
-
-android {
-	compileSdkVersion sdk_version
-	buildToolsVersion build_tools_version
-
-	defaultConfig {
-		minSdkVersion 9
-		targetSdkVersion sdk_version
-
-		versionCode 2
-		versionName '1.0.1'
-	}
-}
-
-dependencies {
-	compile "com.android.support:appcompat-v7:$support_version"
-}

cameraview/src/main/AndroidManifest.xml

@@ -1,3 +0,0 @@
-<manifest
-	xmlns:android="http://schemas.android.com/apk/res/android"
-	package="de.markusfisch.android.cameraview"/>

cameraview/src/main/java/de/markusfisch/android/cameraview/widget/CameraView.java

@@ -1,364 +0,0 @@
-package de.markusfisch.android.cameraview.widget;
-
-import android.annotation.TargetApi;
-import android.content.Context;
-import android.graphics.Rect;
-import android.hardware.Camera;
-import android.os.AsyncTask;
-import android.os.Build;
-import android.util.AttributeSet;
-import android.view.Surface;
-import android.view.SurfaceHolder;
-import android.view.SurfaceView;
-import android.view.View;
-import android.view.WindowManager;
-import android.widget.FrameLayout;
-
-import java.io.IOException;
-import java.util.List;
-
-public class CameraView extends FrameLayout {
-	public interface OnCameraListener {
-		void onConfigureParameters(Camera.Parameters parameters);
-		void onCameraStarted(Camera camera);
-		void onCameraStopping(Camera camera);
-	}
-
-	public final Rect previewRect = new Rect();
-
-	private Camera camera;
-	private int viewWidth;
-	private int viewHeight;
-	private int frameWidth;
-	private int frameHeight;
-	private int frameOrientation;
-	private OnCameraListener onCameraListener;
-
-	public static int findCameraId(int facing) {
-		for (int i = 0, l = Camera.getNumberOfCameras(); i < l; ++i) {
-			Camera.CameraInfo info = new Camera.CameraInfo();
-			Camera.getCameraInfo(i, info);
-			if (info.facing == facing) {
-				return i;
-			}
-		}
-		return -1;
-	}
-
-	public static int getCameraOrientation(Context context, int cameraId) {
-		Camera.CameraInfo info = new Camera.CameraInfo();
-		Camera.getCameraInfo(cameraId, info);
-		return (info.orientation - getDeviceRotation(context) + 360) % 360;
-	}
-
-	public static int getDeviceRotation(Context context) {
-		switch (((WindowManager) context
-				.getSystemService(Context.WINDOW_SERVICE))
-				.getDefaultDisplay()
-				.getRotation()) {
-			default:
-			case Surface.ROTATION_0:
-				return 0;
-			case Surface.ROTATION_90:
-				return 90;
-			case Surface.ROTATION_180:
-				return 180;
-			case Surface.ROTATION_270:
-				return 270;
-		}
-	}
-
-	public CameraView(Context context) {
-		super(context);
-	}
-
-	public CameraView(Context context, AttributeSet attrs) {
-		super(context, attrs);
-	}
-
-	public CameraView(
-			Context context,
-			AttributeSet attrs,
-			int defStyleAttr) {
-		super(context, attrs, defStyleAttr);
-	}
-
-	public void openAsync(final int cameraId) {
-		new AsyncTask<Void, Void, Camera>() {
-			@Override
-			protected Camera doInBackground(Void... nothings) {
-				if (camera != null) {
-					return null;
-				}
-				try {
-					// open() may take a while so it shouldn't be
-					// run on the main thread according to the docs
-					return Camera.open(cameraId);
-				} catch (RuntimeException e) {
-					return null;
-				}
-			}
-
-			@Override
-			protected void onPostExecute(Camera camera) {
-				if (camera == null) {
-					return;
-				}
-				CameraView.this.camera = camera;
-				Context context = getContext();
-				if (context == null) {
-					close();
-					return;
-				}
-				frameOrientation = getCameraOrientation(context, cameraId);
-				if (viewWidth > 0) {
-					setCameraParameters(context);
-				}
-			}
-		}.execute();
-	}
-
-	public void close() {
-		if (camera != null) {
-			if (onCameraListener != null) {
-				onCameraListener.onCameraStopping(camera);
-			}
-			camera.stopPreview();
-			camera.setPreviewCallback(null);
-			camera.release();
-			camera = null;
-		}
-		removeAllViews();
-	}
-
-	public void setOnCameraListener(OnCameraListener listener) {
-		onCameraListener = listener;
-	}
-
-	public Camera getCamera() {
-		return camera;
-	}
-
-	public int getFrameWidth() {
-		return frameWidth;
-	}
-
-	public int getFrameHeight() {
-		return frameHeight;
-	}
-
-	public int getFrameOrientation() {
-		return frameOrientation;
-	}
-
-	@Override
-	protected void onLayout(
-			boolean changed,
-			int left,
-			int top,
-			int right,
-			int bottom) {
-		if (!changed) {
-			return;
-		}
-		viewWidth = right - left;
-		viewHeight = bottom - top;
-		if (camera != null && getChildCount() == 0) {
-			Context context = getContext();
-			if (context == null) {
-				return;
-			}
-			setCameraParameters(context);
-		}
-	}
-
-	private void setCameraParameters(Context context) {
-		boolean transpose = frameOrientation == 90 || frameOrientation == 270;
-
-		Camera.Parameters parameters = camera.getParameters();
-		parameters.setRotation(frameOrientation);
-		setPreviewSize(parameters, transpose);
-		setAutoFocus(parameters);
-		if (onCameraListener != null) {
-			onCameraListener.onConfigureParameters(parameters);
-		}
-		camera.setParameters(parameters);
-		camera.setDisplayOrientation(frameOrientation);
-
-		int childWidth;
-		int childHeight;
-		if (transpose) {
-			childWidth = frameHeight;
-			childHeight = frameWidth;
-		} else {
-			childWidth = frameWidth;
-			childHeight = frameHeight;
-		}
-		addSurfaceView(context, childWidth, childHeight);
-
-		if (onCameraListener != null) {
-			onCameraListener.onCameraStarted(camera);
-		}
-	}
-
-	private void setPreviewSize(
-			Camera.Parameters parameters,
-			boolean transpose) {
-		if (transpose) {
-			frameWidth = viewHeight;
-			frameHeight = viewWidth;
-		} else {
-			frameWidth = viewWidth;
-			frameHeight = viewHeight;
-		}
-		Camera.Size size = findBestPreviewSize(
-				// will always return at least one item
-				parameters.getSupportedPreviewSizes(),
-				frameWidth,
-				frameHeight);
-		frameWidth = size.width;
-		frameHeight = size.height;
-		parameters.setPreviewSize(frameWidth, frameHeight);
-	}
-
-	private static Camera.Size findBestPreviewSize(
-			List<Camera.Size> sizes,
-			int width,
-			int height) {
-		final double ASPECT_TOLERANCE = 0.1;
-		double targetRatio = (double) width / height;
-		double minDiff = Double.MAX_VALUE;
-		double minDiffAspect = Double.MAX_VALUE;
-		Camera.Size bestSize = null;
-		Camera.Size bestSizeAspect = null;
-
-		for (Camera.Size size : sizes) {
-			double diff = Math.abs(size.height - height) +
-					Math.abs(size.width - width);
-
-			if (diff < minDiff) {
-				bestSize = size;
-				minDiff = diff;
-			}
-
-			double ratio = (double) size.width / size.height;
-
-			if (Math.abs(ratio - targetRatio) < ASPECT_TOLERANCE &&
-					diff < minDiffAspect) {
-				bestSizeAspect = size;
-				minDiffAspect = diff;
-			}
-		}
-
-		return bestSizeAspect != null ? bestSizeAspect : bestSize;
-	}
-
-	@TargetApi(Build.VERSION_CODES.ICE_CREAM_SANDWICH)
-	private static void setAutoFocus(Camera.Parameters parameters) {
-		// best for taking pictures, API >= ICE_CREAM_SANDWICH
-		String continuousPicture =
-				Camera.Parameters.FOCUS_MODE_CONTINUOUS_PICTURE;
-		// less aggressive than CONTINUOUS_PICTURE, API >= GINGERBREAD
-		String continuousVideo =
-				Camera.Parameters.FOCUS_MODE_CONTINUOUS_VIDEO;
-		// last resort
-		String autoFocus = Camera.Parameters.FOCUS_MODE_AUTO;
-
-		// prefer feature detection instead of checking BUILD.VERSION
-		List<String> focusModes = parameters.getSupportedFocusModes();
-
-		if (focusModes.contains(continuousPicture)) {
-			parameters.setFocusMode(continuousPicture);
-		} else if (focusModes.contains(continuousVideo)) {
-			parameters.setFocusMode(continuousVideo);
-		} else if (focusModes.contains(autoFocus)) {
-			parameters.setFocusMode(autoFocus);
-		}
-	}
-
-	private void addSurfaceView(
-			Context context,
-			int surfaceWidth,
-			int surfaceHeight) {
-		SurfaceView surfaceView = new SurfaceView(context);
-		SurfaceHolder holder = surfaceView.getHolder();
-		if (Build.VERSION.SDK_INT < Build.VERSION_CODES.HONEYCOMB) {
-			holder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);
-		}
-		holder.setKeepScreenOn(true);
-		holder.addCallback(new SurfaceHolder.Callback() {
-			@Override
-			public void surfaceCreated(SurfaceHolder holder) {
-			}
-
-			@Override
-			public void surfaceChanged(
-					SurfaceHolder holder,
-					int format,
-					int width,
-					int height) {
-				try {
-					camera.setPreviewDisplay(holder);
-				} catch (IOException e) {
-					return;
-				}
-				camera.startPreview();
-			}
-
-			@Override
-			public void surfaceDestroyed(SurfaceHolder holder) {
-				close();
-			}
-		});
-		addView(surfaceView);
-		setChildLayout(
-				viewWidth,
-				viewHeight,
-				surfaceView,
-				surfaceWidth,
-				surfaceHeight,
-				previewRect);
-	}
-
-	private static void setChildLayout(
-			int width,
-			int height,
-			View child,
-			int childWidth,
-			int childHeight,
-			Rect childRect) {
-		int widthByHeight = width * childHeight;
-		int heightByWidth = height * childWidth;
-		boolean dontScaleBeyondScreen = Build.VERSION.SDK_INT <
-				Build.VERSION_CODES.ICE_CREAM_SANDWICH;
-
-		if (dontScaleBeyondScreen ?
-				// center within parent view
-				widthByHeight > heightByWidth :
-				// scale to cover parent view
-				widthByHeight < heightByWidth) {
-			childWidth = childWidth * height / childHeight;
-			childHeight = height;
-		} else {
-			childHeight = childHeight * width / childWidth;
-			childWidth = width;
-		}
-
-		int l = (width - childWidth) >> 1;
-		int t = dontScaleBeyondScreen ?
-				(height - childHeight) >> 1 :
-				0;
-
-		childRect.set(
-				l,
-				t,
-				l + childWidth,
-				t + childHeight);
-
-		child.layout(
-				childRect.left,
-				childRect.top,
-				childRect.right,
-				childRect.bottom);
-	}
-}

gradle/wrapper/gradle-wrapper.properties

@@ -3,4 +3,4 @@ distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-3.3-all.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-4.10.1-all.zip