Add a barcode home screen widget for displaying a selected loyalty card's barcode and with proper orientation handling. #3125
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,216 @@ | ||
| package protect.card_locker | ||
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| import android.app.PendingIntent | ||
| import android.appwidget.AppWidgetManager | ||
| import android.appwidget.AppWidgetProvider | ||
| import android.content.ComponentName | ||
| import android.content.Context | ||
| import android.content.Intent | ||
| import android.graphics.Bitmap | ||
| import android.graphics.Color | ||
| import android.graphics.Matrix | ||
| import android.os.Bundle | ||
| import android.view.View | ||
| import android.widget.RemoteViews | ||
| import com.google.zxing.EncodeHintType | ||
| import com.google.zxing.MultiFormatWriter | ||
| import com.google.zxing.WriterException | ||
| import com.google.zxing.common.BitMatrix | ||
| import protect.card_locker.cardview.LoyaltyCardViewActivity | ||
| import protect.card_locker.preferences.Settings | ||
| import java.nio.charset.Charset | ||
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| class BarcodeWidget : AppWidgetProvider() { | ||
| override fun onUpdate( | ||
| context: Context, | ||
| appWidgetManager: AppWidgetManager, | ||
| appWidgetIds: IntArray, | ||
| ) { | ||
| for (appWidgetId in appWidgetIds) { | ||
| updateWidget(context, appWidgetManager, appWidgetId) | ||
| } | ||
| } | ||
|
|
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| override fun onAppWidgetOptionsChanged( | ||
| context: Context, | ||
| appWidgetManager: AppWidgetManager, | ||
| appWidgetId: Int, | ||
| newOptions: Bundle?, | ||
| ) { | ||
| updateWidget(context, appWidgetManager, appWidgetId) | ||
| } | ||
|
|
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| private fun updateWidget( | ||
| context: Context, | ||
| appWidgetManager: AppWidgetManager, | ||
| appWidgetId: Int, | ||
| ) { | ||
| val prefs = context.getSharedPreferences(PREFS_NAME, Context.MODE_PRIVATE) | ||
| val cardId = prefs.getInt(PREFS_CARD_ID_PREFIX + appWidgetId, -1) | ||
|
|
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| if (cardId == -1) { | ||
| val views = createEmptyViews(context) | ||
| appWidgetManager.updateAppWidget(appWidgetId, views) | ||
| return | ||
| } | ||
|
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| val db = DBHelper(context).readableDatabase | ||
| val card = DBHelper.getLoyaltyCard(context, db, cardId) | ||
|
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| val barcodeType = card?.barcodeType | ||
| val cardIdStr = card?.cardId | ||
|
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| if (card == null || barcodeType == null || cardIdStr.isNullOrEmpty()) { | ||
| val views = createEmptyViews(context) | ||
| appWidgetManager.updateAppWidget(appWidgetId, views) | ||
| return | ||
| } | ||
|
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| val showFormat = Settings(context).showBarcodeWidgetFormat() | ||
|
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| val options = appWidgetManager.getAppWidgetOptions(appWidgetId) | ||
| val isVertical = | ||
| options.getInt(AppWidgetManager.OPTION_APPWIDGET_MAX_HEIGHT, 0) > | ||
| options.getInt(AppWidgetManager.OPTION_APPWIDGET_MAX_WIDTH, 0) | ||
|
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| var barcodeBitmap = generateBarcode(cardIdStr, barcodeType, card.barcodeEncoding) | ||
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| if (barcodeBitmap != null && isVertical && !barcodeType.isSquare()) { | ||
| barcodeBitmap = rotateBitmap(barcodeBitmap, 90f) | ||
| } | ||
|
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| val views = RemoteViews(context.packageName, R.layout.barcode_widget) | ||
| views.setTextViewText(R.id.store_name, card.store) | ||
|
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| if (barcodeBitmap != null) { | ||
| views.setImageViewBitmap(R.id.barcode_image, barcodeBitmap) | ||
| views.setViewVisibility(R.id.barcode_image, View.VISIBLE) | ||
| } else { | ||
| views.setViewVisibility(R.id.barcode_image, View.GONE) | ||
| } | ||
|
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| if (showFormat) { | ||
| views.setTextViewText(R.id.barcode_format, barcodeType.prettyName()) | ||
| views.setViewVisibility(R.id.barcode_format, View.VISIBLE) | ||
| } else { | ||
| views.setViewVisibility(R.id.barcode_format, View.GONE) | ||
| } | ||
|
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| val cardIntent = | ||
| Intent(context, LoyaltyCardViewActivity::class.java).apply { | ||
| flags = Intent.FLAG_ACTIVITY_NEW_TASK or Intent.FLAG_ACTIVITY_CLEAR_TASK | ||
| putExtra(LoyaltyCardViewActivity.BUNDLE_ID, card.id) | ||
| } | ||
| val pendingIntent = | ||
| PendingIntent.getActivity( | ||
| context, | ||
| 0, | ||
| cardIntent, | ||
| PendingIntent.FLAG_MUTABLE or PendingIntent.FLAG_UPDATE_CURRENT, | ||
| ) | ||
| views.setOnClickPendingIntent(R.id.widget_layout, pendingIntent) | ||
|
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||
| appWidgetManager.updateAppWidget(appWidgetId, views) | ||
| } | ||
|
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| private fun createEmptyViews(context: Context): RemoteViews { | ||
| val views = RemoteViews(context.packageName, R.layout.barcode_widget) | ||
| views.setTextViewText( | ||
| R.id.store_name, | ||
| context.getString(R.string.barcode_widget_not_configured), | ||
| ) | ||
| views.setViewVisibility(R.id.barcode_image, View.GONE) | ||
| views.setViewVisibility(R.id.barcode_format, View.GONE) | ||
| return views | ||
| } | ||
|
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| private fun generateBarcode( | ||
| cardId: String, | ||
| format: CatimaBarcode, | ||
| encoding: Charset, | ||
| ): Bitmap? { | ||
| if (cardId.isEmpty()) return null | ||
|
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| val isSquare = format.isSquare() | ||
| val genWidth = if (isSquare) 500 else 1000 | ||
| val genHeight = if (isSquare) 500 else 300 | ||
|
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| return try { | ||
| val writer = MultiFormatWriter() | ||
|
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| val encodeHints = mutableMapOf<EncodeHintType, Any>() | ||
| if (encoding.name() != "ISO-8859-1") { | ||
| encodeHints[EncodeHintType.CHARACTER_SET] = encoding.name() | ||
| } | ||
|
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| val bitMatrix = | ||
| try { | ||
| if (encodeHints.isNotEmpty()) { | ||
| writer.encode(cardId, format.format(), genWidth, genHeight, encodeHints) | ||
| } else { | ||
| writer.encode(cardId, format.format(), genWidth, genHeight) | ||
| } | ||
| } catch (e: WriterException) { | ||
| return null | ||
| } catch (e: Exception) { | ||
| return null | ||
| } | ||
|
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| bitmapFromBitMatrix(bitMatrix) | ||
| } catch (e: OutOfMemoryError) { | ||
| null | ||
| } | ||
| } | ||
|
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| private fun rotateBitmap( | ||
| bitmap: Bitmap, | ||
| degrees: Float, | ||
| ): Bitmap { | ||
| val matrix = Matrix() | ||
| matrix.postRotate(degrees) | ||
| return Bitmap.createBitmap(bitmap, 0, 0, bitmap.width, bitmap.height, matrix, true) | ||
| } | ||
|
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| private fun bitmapFromBitMatrix(bitMatrix: BitMatrix): Bitmap { | ||
| val width = bitMatrix.width | ||
| val height = bitMatrix.height | ||
| val pixels = IntArray(width * height) | ||
|
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| for (y in 0 until height) { | ||
| val offset = y * width | ||
| for (x in 0 until width) { | ||
| pixels[offset + x] = if (bitMatrix.get(x, y)) Color.BLACK else Color.WHITE | ||
| } | ||
| } | ||
|
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| val bitmap = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888) | ||
| bitmap.setPixels(pixels, 0, width, 0, 0, width, height) | ||
| return bitmap | ||
| } | ||
|
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| companion object { | ||
| private const val PREFS_NAME = "barcode_widget_prefs" | ||
| private const val PREFS_CARD_ID_PREFIX = "card_id_" | ||
|
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| fun saveCardPref( | ||
| context: Context, | ||
| appWidgetId: Int, | ||
| cardId: Int, | ||
| ) { | ||
| context | ||
| .getSharedPreferences(PREFS_NAME, Context.MODE_PRIVATE) | ||
| .edit() | ||
| .putInt(PREFS_CARD_ID_PREFIX + appWidgetId, cardId) | ||
| .apply() | ||
| } | ||
|
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| fun triggerUpdate(context: Context) { | ||
| val appWidgetManager = AppWidgetManager.getInstance(context) | ||
| val componentName = ComponentName(context, BarcodeWidget::class.java) | ||
| val appWidgetIds = appWidgetManager.getAppWidgetIds(componentName) | ||
| if (appWidgetIds.isNotEmpty()) { | ||
| BarcodeWidget().onUpdate(context, appWidgetManager, appWidgetIds) | ||
| } | ||
| } | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,83 @@ | ||
| package protect.card_locker | ||
|
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||
| import android.appwidget.AppWidgetManager | ||
| import android.content.Intent | ||
| import android.database.sqlite.SQLiteDatabase | ||
| import android.os.Bundle | ||
| import android.widget.Toast | ||
| import androidx.recyclerview.widget.GridLayoutManager | ||
| import protect.card_locker.databinding.BarcodeWidgetConfigureActivityBinding | ||
| import protect.card_locker.preferences.Settings | ||
|
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| class BarcodeWidgetConfigureActivity : CatimaAppCompatActivity(), | ||
| LoyaltyCardCursorAdapter.CardAdapterListener { | ||
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| private lateinit var binding: BarcodeWidgetConfigureActivityBinding | ||
| private lateinit var mDatabase: SQLiteDatabase | ||
| private lateinit var mAdapter: LoyaltyCardCursorAdapter | ||
| private var appWidgetId = AppWidgetManager.INVALID_APPWIDGET_ID | ||
|
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| override fun onCreate(savedInstanceState: Bundle?) { | ||
| super.onCreate(savedInstanceState) | ||
| binding = BarcodeWidgetConfigureActivityBinding.inflate(layoutInflater) | ||
| mDatabase = DBHelper(this).readableDatabase | ||
|
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| appWidgetId = intent?.getIntExtra( | ||
| AppWidgetManager.EXTRA_APPWIDGET_ID, | ||
| AppWidgetManager.INVALID_APPWIDGET_ID | ||
| ) ?: AppWidgetManager.INVALID_APPWIDGET_ID | ||
|
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| if (appWidgetId == AppWidgetManager.INVALID_APPWIDGET_ID) { | ||
| setResult(RESULT_CANCELED) | ||
| finish() | ||
| return | ||
| } | ||
|
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| setResult(RESULT_CANCELED) | ||
|
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| setContentView(binding.root) | ||
| Utils.applyWindowInsets(binding.root) | ||
|
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| binding.toolbar.apply { | ||
| setTitle(R.string.barcode_widget_configure_title) | ||
| setSupportActionBar(this) | ||
| } | ||
|
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| if (DBHelper.getLoyaltyCardCount(mDatabase) == 0) { | ||
| Toast.makeText(this, R.string.noCardsMessage, Toast.LENGTH_LONG).show() | ||
| finish() | ||
| return | ||
| } | ||
|
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| val cardCursor = DBHelper.getLoyaltyCardCursor(mDatabase) | ||
| mAdapter = LoyaltyCardCursorAdapter(this, cardCursor, this, null) | ||
| binding.list.adapter = mAdapter | ||
| } | ||
|
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| override fun onResume() { | ||
| super.onResume() | ||
| val layoutManager = binding.list.layoutManager as GridLayoutManager? | ||
| layoutManager?.spanCount = Settings(this).getPreferredColumnCount() | ||
| } | ||
|
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| override fun onRowClicked(position: Int) { | ||
| val cursor = DBHelper.getLoyaltyCardCursor(mDatabase) | ||
| cursor.moveToPosition(position) | ||
| val card = LoyaltyCard.fromCursor(this, cursor) | ||
|
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| BarcodeWidget.saveCardPref(this, appWidgetId, card.id) | ||
|
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| val appWidgetManager = AppWidgetManager.getInstance(this) | ||
| BarcodeWidget().onUpdate(this, appWidgetManager, intArrayOf(appWidgetId)) | ||
|
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| val resultValue = Intent().putExtra( | ||
| AppWidgetManager.EXTRA_APPWIDGET_ID, | ||
| appWidgetId | ||
| ) | ||
| setResult(RESULT_OK, resultValue) | ||
| finish() | ||
| } | ||
|
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| override fun onRowLongClicked(position: Int) { | ||
| } | ||
| } |
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This seems to duplicate a lot of the code of the
BarcodeImageWriterTaskclass. Is there any reason for this? Duplicated code is harder to maintain and increases the risk of introducing bugs (for example: forgetting to update the widget code when the general drawing code gets updated).