Optimized transmitters adapter, changes to the recycler and ViewHolders

2026-10-02 03:15:37 +00:00 · 2020-10-17 19:48:28 +01:00
1 parent 69b3e4f70b
commit 810fa5b85c
@@ -30,17 +30,25 @@ import com.rtbishop.look4sat.databinding.ItemTransBinding
 import com.rtbishop.look4sat.utility.PassPredictor
 import java.util.*

-class TransAdapter : RecyclerView.Adapter<TransAdapter.TransHolder>() {
+class TransAdapter(context: Context) : RecyclerView.Adapter<TransAdapter.TransHolder>() {

-    private var transmittersList = emptyList<SatTrans>()
    private lateinit var predictor: PassPredictor
+    private val divider = 1000000f
+    private val strNo = context.getString(R.string.btn_no)
+    private val strYes = context.getString(R.string.btn_yes)
+    private val mode = context.getString(R.string.trans_mode)
+    private val formatLink = context.getString(R.string.trans_down_low_doppler)
+    private val formatLinkNull = context.getString(R.string.no_downlink_doppler)
+    private val isInverted = context.getString(R.string.trans_inverted)
+    private var transmittersList = emptyList<SatTrans>()

-    fun setPredictor(predict: PassPredictor) {
-        predictor = predict
+    fun setPredictor(predictor: PassPredictor) {
+        this.predictor = predictor
    }

    fun setList(list: List<SatTrans>) {
        transmittersList = list
+        notifyDataSetChanged()
    }

    override fun getItemCount(): Int {
@@ -61,82 +69,24 @@ class TransAdapter : RecyclerView.Adapter<TransAdapter.TransHolder>() {
        RecyclerView.ViewHolder(itemView) {

        fun bind(satTrans: SatTrans) {
-            val context: Context = itemView.context
-            val freqDivider = 1000000f
+            val dateNow = Date()
+            binding.description.text = satTrans.description

-            binding.transDescription.text = satTrans.description
+            if (satTrans.downlinkLow != null) {
+                val downFreq = predictor.getDownlinkFreq(satTrans.downlinkLow, dateNow) / divider
+                binding.downlink.text = String.format(formatLink, downFreq)
+            } else binding.downlink.text = formatLinkNull

-            if (satTrans.downlinkLow != null && satTrans.downlinkHigh == null) {
-                binding.transDownlink.text = String
-                    .format(
-                        context.getString(R.string.trans_down_low),
-                        satTrans.downlinkLow / freqDivider
-                    )
-                binding.transDownlinkDoppler.text = String
-                    .format(
-                        context.getString(R.string.trans_down_low_doppler),
-                        predictor.getDownlinkFreq(satTrans.downlinkLow, Date()) / freqDivider
-                    )
-            } else if (satTrans.downlinkLow != null && satTrans.downlinkHigh != null) {
-                binding.transDownlink.text = String
-                    .format(
-                        context.getString(R.string.trans_down_lowHigh),
-                        satTrans.downlinkLow / freqDivider,
-                        satTrans.downlinkHigh / freqDivider
-                    )
-                binding.transDownlinkDoppler.text = String
-                    .format(
-                        context.getString(R.string.trans_down_lowHigh_doppler),
-                        predictor.getDownlinkFreq(satTrans.downlinkLow, Date()) / freqDivider,
-                        predictor.getDownlinkFreq(satTrans.downlinkHigh, Date()) / freqDivider
-                    )
-            } else {
-                binding.transDownlink.text = context.getString(R.string.no_downlink)
-                binding.transDownlinkDoppler.text = context.getString(R.string.no_downlink_doppler)
-            }
+            if (satTrans.uplinkLow != null) {
+                val upFreq = predictor.getUplinkFreq(satTrans.uplinkLow, dateNow) / divider
+                binding.uplink.text = String.format(formatLink, upFreq)
+            } else binding.uplink.text = formatLinkNull

-            if (satTrans.uplinkLow != null && satTrans.uplinkHigh == null) {
-                binding.transUplink.text = String.format(
-                    context.getString(R.string.trans_up_low),
-                    satTrans.uplinkLow / freqDivider
-                )
-                binding.transUplinkDoppler.text = String.format(
-                    context.getString(R.string.trans_up_low_doppler),
-                    predictor.getUplinkFreq(satTrans.uplinkLow, Date()) / freqDivider
-                )
-            } else if (satTrans.uplinkLow != null && satTrans.uplinkHigh != null) {
-                binding.transUplink.text = String.format(
-                    context.getString(R.string.trans_up_lowHigh),
-                    satTrans.uplinkLow / freqDivider,
-                    satTrans.uplinkHigh / freqDivider
-                )
-                binding.transUplinkDoppler.text = String.format(
-                    context.getString(R.string.trans_up_lowHigh_doppler),
-                    predictor.getUplinkFreq(satTrans.uplinkLow, Date()) / freqDivider,
-                    predictor.getUplinkFreq(satTrans.uplinkHigh, Date()) / freqDivider
-                )
-            } else {
-                binding.transUplink.text = context.getString(R.string.no_uplink)
-                binding.transUplinkDoppler.text = context.getString(R.string.no_uplink_doppler)
-            }
+            if (satTrans.mode != null) binding.mode.text = String.format(mode, satTrans.mode)
+            else binding.mode.text = String.format(mode, strNo)

-            if (satTrans.mode != null) {
-                binding.transMode.text =
-                    String.format(context.getString(R.string.trans_mode), satTrans.mode)
-            } else {
-                binding.transMode.text = context.getString(R.string.no_mode)
-            }
-            if (satTrans.isInverted) {
-                binding.transInverted.text = String.format(
-                    context.getString(R.string.trans_inverted),
-                    context.getString(R.string.btn_yes)
-                )
-            } else {
-                binding.transInverted.text = String.format(
-                    context.getString(R.string.trans_inverted),
-                    context.getString(R.string.btn_no)
-                )
-            }
+            if (satTrans.isInverted) binding.isInverted.text = String.format(isInverted, strYes)
+            else binding.isInverted.text = String.format(isInverted, strNo)
        }
    }
 }
@@ -24,9 +24,7 @@ import android.hardware.*
 import android.os.Bundle
 import android.view.View
 import androidx.fragment.app.Fragment
-import androidx.fragment.app.FragmentActivity
 import androidx.fragment.app.activityViewModels
-import androidx.lifecycle.lifecycleScope
 import androidx.navigation.fragment.navArgs
 import androidx.recyclerview.widget.LinearLayoutManager
 import com.rtbishop.look4sat.R
@@ -37,9 +35,8 @@ import com.rtbishop.look4sat.databinding.FragmentPolarBinding
 import com.rtbishop.look4sat.ui.adapters.TransAdapter
 import com.rtbishop.look4sat.ui.views.PolarView
 import com.rtbishop.look4sat.utility.PrefsManager
+import com.rtbishop.look4sat.utility.RecyclerDivider
 import dagger.hilt.android.AndroidEntryPoint
-import kotlinx.coroutines.delay
-import kotlinx.coroutines.launch
 import java.util.*
 import javax.inject.Inject
 import kotlin.math.round
@@ -50,24 +47,26 @@ class PolarFragment : Fragment(R.layout.fragment_polar), SensorEventListener {
    @Inject
    lateinit var prefsManager: PrefsManager

-    private lateinit var mainActivity: FragmentActivity
+    private lateinit var transmitterAdapter: TransAdapter
    private lateinit var binding: FragmentPolarBinding
    private lateinit var satPass: SatPass
    private lateinit var sensorManager: SensorManager
    private val viewModel: SharedViewModel by activityViewModels()
    private val args: PolarFragmentArgs by navArgs()
-    private val transmitterAdapter = TransAdapter()
    private var magneticDeclination = 0f
    private var polarView: PolarView? = null

    override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
        super.onViewCreated(view, savedInstanceState)
-        mainActivity = requireActivity()
        binding = FragmentPolarBinding.bind(view)
-        sensorManager = mainActivity.getSystemService(Context.SENSOR_SERVICE) as SensorManager
+        sensorManager = requireContext().getSystemService(Context.SENSOR_SERVICE) as SensorManager
+        transmitterAdapter = TransAdapter(requireContext())
        binding.recycler.apply {
-            layoutManager = LinearLayoutManager(mainActivity)
+            setHasFixedSize(true)
            adapter = transmitterAdapter
+            isVerticalScrollBarEnabled = false
+            layoutManager = LinearLayoutManager(context)
+            addItemDecoration(RecyclerDivider(R.drawable.rec_divider_dark))
        }
        calculateMagneticDeclination()
        observePasses()
@@ -109,20 +108,26 @@ class PolarFragment : Fragment(R.layout.fragment_polar), SensorEventListener {
        viewModel.getPasses().observe(viewLifecycleOwner, { result ->
            if (result is Result.Success) {
                satPass = result.data[args.satPassIndex]
-                polarView = PolarView(mainActivity, satPass)
+                polarView = PolarView(requireContext(), satPass)
                binding.frame.addView(polarView)
+                observeTimer()
                observeTransmitters()
-                refreshText()
            }
        })
    }

+    private fun observeTimer() {
+        viewModel.getCurrentTimeMillis().observe(viewLifecycleOwner, {
+            transmitterAdapter.notifyDataSetChanged()
+            setPassText(Date(it))
+        })
+    }
+
    private fun observeTransmitters() {
        viewModel.getTransmittersForSat(satPass.tle.catnum).observe(viewLifecycleOwner, {
            if (it.isNotEmpty()) {
                transmitterAdapter.setPredictor(satPass.predictor)
                transmitterAdapter.setList(it)
-                transmitterAdapter.notifyDataSetChanged()
                binding.recycler.visibility = View.VISIBLE
                binding.noTransMsg.visibility = View.INVISIBLE
            } else {
@@ -133,33 +138,22 @@ class PolarFragment : Fragment(R.layout.fragment_polar), SensorEventListener {
    }

    private fun calculateMagneticDeclination() {
-        val position = prefsManager.getStationPosition()
-        val geoField = GeomagneticField(
-            position.latitude.toFloat(),
-            position.longitude.toFloat(),
-            position.heightAMSL.toFloat(),
-            System.currentTimeMillis()
-        )
-        magneticDeclination = geoField.declination
-    }
-
-    private fun refreshText() {
-        lifecycleScope.launch {
-            while (true) {
-                setPassText()
-                polarView?.invalidate()
-                transmitterAdapter.notifyDataSetChanged()
-                delay(3000)
-            }
+        prefsManager.getStationPosition().let {
+            magneticDeclination = GeomagneticField(
+                it.latitude.toFloat(),
+                it.longitude.toFloat(),
+                it.heightAMSL.toFloat(),
+                System.currentTimeMillis()
+            ).declination
        }
    }

-    private fun setPassText() {
-        val satPos = satPass.predictor.getSatPos(Date())
-        val polarAz = mainActivity.getString(R.string.pat_azimuth)
-        val polarEl = mainActivity.getString(R.string.pat_elevation)
-        val polarRng = mainActivity.getString(R.string.pat_distance)
-        val polarAlt = mainActivity.getString(R.string.pat_altitude)
+    private fun setPassText(date: Date) {
+        val satPos = satPass.predictor.getSatPos(date)
+        val polarAz = getString(R.string.pat_azimuth)
+        val polarEl = getString(R.string.pat_elevation)
+        val polarRng = getString(R.string.pat_distance)
+        val polarAlt = getString(R.string.pat_altitude)
        binding.azimuth.text = String.format(polarAz, Math.toDegrees(satPos.azimuth))
        binding.elevation.text = String.format(polarEl, Math.toDegrees(satPos.elevation))
        binding.distance.text = String.format(polarRng, satPos.range)
@@ -22,16 +22,16 @@ class PolarView(context: Context) : View(context) {
    private val polarWidth = resources.displayMetrics.widthPixels
    private val polarCenter = polarWidth / 2f
    private val scale = resources.displayMetrics.density
-    private val radius = polarWidth * 0.49f
-    private val txtSize = scale * 15
+    private val radius = polarWidth * 0.48f
+    private val txtSize = scale * 16
    private val path: Path = Path()
-    private var azimuth = 0f
+    private val piDiv2 = Math.PI / 2.0

    private val radarPaint = Paint().apply {
        isAntiAlias = true
        color = ContextCompat.getColor(context, R.color.greyLight)
        style = Paint.Style.STROKE
-        strokeWidth = scale
+        strokeWidth = scale * 1.6f
    }
    private val txtPaint = Paint().apply {
        isAntiAlias = true
@@ -42,7 +42,7 @@ class PolarView(context: Context) : View(context) {
        isAntiAlias = true
        color = ContextCompat.getColor(context, R.color.satTrack)
        style = Paint.Style.STROKE
-        strokeWidth = scale
+        strokeWidth = scale * 1.6f
    }
    private val satPaint = Paint().apply {
        isAntiAlias = true
@@ -51,13 +51,10 @@ class PolarView(context: Context) : View(context) {
    }

    override fun onDraw(canvas: Canvas) {
-        canvas.rotate(-azimuth, polarCenter, polarCenter)
        canvas.translate(polarCenter, polarCenter)
        drawRadarView(canvas)
        drawRadarText(canvas)
-        if (!pass.tle.isDeepspace) {
-            drawPassTrajectory(canvas, pass)
-        }
+        if (!pass.tle.isDeepspace) drawPassTrajectory(canvas, pass)
        drawSatellite(canvas, pass)
    }

@@ -99,18 +96,16 @@ class PolarView(context: Context) : View(context) {
        if (satPos.elevation > 0) {
            val x = sph2CartX(satPos.azimuth, satPos.elevation, radius.toDouble())
            val y = sph2CartY(satPos.azimuth, satPos.elevation, radius.toDouble())
-            cvs.drawCircle(x, -y, txtSize / 3, satPaint)
+            cvs.drawCircle(x, -y, txtSize / 2.6f, satPaint)
        }
    }

    private fun sph2CartX(azimuth: Double, elevation: Double, r: Double): Float {
-        val piDiv2 = Math.PI / 2.0
        val radius = r * (piDiv2 - elevation) / piDiv2
        return (radius * cos(piDiv2 - azimuth)).toFloat()
    }

    private fun sph2CartY(azimuth: Double, elevation: Double, r: Double): Float {
-        val piDiv2 = Math.PI / 2.0
        val radius = r * (piDiv2 - elevation) / piDiv2
        return (radius * sin(piDiv2 - azimuth)).toFloat()
    }
@@ -1,22 +1,3 @@
-<!--
-  ~ Look4Sat. Amateur radio and weather satellite tracker and passes predictor for Android.
-  ~ Copyright (C) 2019, 2020 Arty Bishop (bishop.arty@gmail.com)
-  ~
-  ~ This program is free software; you can redistribute it and/or modify
-  ~ it under the terms of the GNU General Public License as published by
-  ~ the Free Software Foundation; either version 2 of the License, or
-  ~ (at your option) any later version.
-  ~
-  ~ This program is distributed in the hope that it will be useful,
-  ~ but WITHOUT ANY WARRANTY; without even the implied warranty of
-  ~ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-  ~ GNU General Public License for more details.
-  ~
-  ~ You should have received a copy of the GNU General Public License along
-  ~ with this program; if not, write to the Free Software Foundation, Inc.,
-  ~ 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
-  -->
-
 <vector xmlns:android="http://schemas.android.com/apk/res/android"
    android:width="24dp"
    android:height="24dp"
@@ -24,5 +5,5 @@
    android:viewportHeight="24">
    <path
        android:fillColor="@color/themeLight"
-        android:pathData="M7.41,15.41L12,10.83l4.59,4.58L18,14l-6,-6 -6,6z" />
+        android:pathData="M8,5v14l11,-7z" />
 </vector>
@@ -28,10 +28,7 @@

        <com.google.android.material.card.MaterialCardView
            android:id="@+id/entries_bar"
-            android:layout_width="0dp"
-            android:layout_height="48dp"
-            app:cardCornerRadius="0dp"
-            app:cardElevation="1dp"
+            style="@style/TopBar"
            app:layout_constraintEnd_toEndOf="parent"
            app:layout_constraintStart_toStartOf="parent"
            app:layout_constraintTop_toTopOf="parent" />
@@ -29,10 +29,7 @@

        <com.google.android.material.card.MaterialCardView
            android:id="@+id/passes_bar"
-            android:layout_width="0dp"
-            android:layout_height="48dp"
-            app:cardCornerRadius="0dp"
-            app:cardElevation="1dp"
+            style="@style/TopBar"
            app:layout_constraintEnd_toEndOf="parent"
            app:layout_constraintStart_toStartOf="parent"
            app:layout_constraintTop_toTopOf="parent" />
@@ -23,6 +23,13 @@
    android:layout_height="match_parent"
    android:keepScreenOn="true">

+    <com.google.android.material.card.MaterialCardView
+        android:id="@+id/polar_bar"
+        style="@style/TopBar"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toTopOf="parent" />
+
    <FrameLayout
        android:id="@+id/frame"
        android:layout_width="match_parent"
@@ -30,7 +37,7 @@
        app:layout_constraintDimensionRatio="1:1"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
-        app:layout_constraintTop_toTopOf="parent" />
+        app:layout_constraintTop_toBottomOf="@+id/polar_bar" />

    <com.google.android.material.textview.MaterialTextView
        android:id="@+id/azimuth"
@@ -76,7 +83,7 @@
        android:id="@+id/recycler"
        android:layout_width="0dp"
        android:layout_height="0dp"
-        android:paddingBottom="4dp"
+        android:padding="2dp"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
@@ -92,7 +99,6 @@
        android:textSize="15sp"
        android:visibility="invisible"
        app:layout_constraintEnd_toEndOf="parent"
-        app:layout_constraintHorizontal_bias="0.5"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/frame" />
 </androidx.constraintlayout.widget.ConstraintLayout>
@@ -19,177 +19,120 @@

 <com.google.android.material.card.MaterialCardView xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
-    android:id="@+id/trans_card"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
-    android:layout_marginStart="4dp"
-    android:layout_marginTop="4dp"
-    android:layout_marginEnd="4dp"
-    app:cardElevation="1dp">
+    app:cardCornerRadius="0dp">

    <androidx.constraintlayout.widget.ConstraintLayout
        android:layout_width="match_parent"
-        android:layout_height="match_parent">
+        android:layout_height="wrap_content">

        <com.google.android.material.textview.MaterialTextView
-            android:id="@+id/trans_description"
-            android:layout_width="wrap_content"
+            android:id="@+id/description"
+            android:layout_width="0dp"
            android:layout_height="wrap_content"
+            android:layout_marginStart="4dp"
+            android:layout_marginTop="4dp"
+            android:layout_marginEnd="6dp"
+            android:ellipsize="end"
+            android:maxLines="1"
            android:text="@string/trans_description"
-            android:textSize="15sp"
-            app:layout_constraintBottom_toBottomOf="@+id/trans_img"
-            app:layout_constraintStart_toEndOf="@+id/trans_img"
-            app:layout_constraintTop_toTopOf="@+id/trans_img" />
+            app:layout_constraintEnd_toEndOf="parent"
+            app:layout_constraintHorizontal_chainStyle="spread_inside"
+            app:layout_constraintStart_toEndOf="@+id/img_trans"
+            app:layout_constraintTop_toTopOf="parent" />

        <com.google.android.material.textview.MaterialTextView
-            android:id="@+id/trans_downlink"
+            android:id="@+id/downlink"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
-            android:text="@string/trans_down_lowHigh"
-            android:textSize="15sp"
-            app:layout_constraintEnd_toEndOf="parent"
-            app:layout_constraintStart_toEndOf="@+id/trans_img_downlink"
-            app:layout_constraintTop_toBottomOf="@+id/trans_description" />
-
-        <com.google.android.material.textview.MaterialTextView
-            android:id="@+id/trans_uplink"
-            android:layout_width="wrap_content"
-            android:layout_height="wrap_content"
-            android:text="@string/trans_up_lowHigh"
-            android:textSize="15sp"
-            app:layout_constraintEnd_toEndOf="parent"
-            app:layout_constraintHorizontal_bias="0.5"
-            app:layout_constraintStart_toEndOf="@+id/trans_img_uplink"
-            app:layout_constraintTop_toBottomOf="@+id/trans_downlink" />
-
-        <View
-            android:id="@+id/separator"
-            android:layout_width="match_parent"
-            android:layout_height="1dp"
-            android:layout_marginStart="8dp"
-            android:layout_marginTop="2dp"
-            android:layout_marginEnd="8dp"
-            android:background="@color/greyLight"
-            android:padding="15dp"
-            app:layout_constraintEnd_toEndOf="parent"
+            android:layout_marginTop="4dp"
+            android:fontFamily="@font/digital_dismay"
+            android:text="@string/trans_down_low_doppler"
+            android:textColor="@color/themeLight"
+            android:textSize="30sp"
+            app:layout_constraintEnd_toStartOf="@+id/img_downlink"
            app:layout_constraintStart_toStartOf="parent"
-            app:layout_constraintTop_toBottomOf="@+id/trans_uplink" />
+            app:layout_constraintTop_toBottomOf="@+id/description" />

        <com.google.android.material.textview.MaterialTextView
-            android:id="@+id/trans_downlink_doppler"
+            android:id="@+id/uplink"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
-            android:layout_marginTop="1dp"
-            android:text="@string/trans_down_lowHigh_doppler"
-            android:textSize="15sp"
+            android:fontFamily="@font/digital_dismay"
+            android:text="@string/trans_down_low_doppler"
+            android:textColor="@color/themeLight"
+            android:textSize="30sp"
+            app:layout_constraintBaseline_toBaselineOf="@+id/downlink"
            app:layout_constraintEnd_toEndOf="parent"
-            app:layout_constraintStart_toEndOf="@+id/trans_img_downlink_doppler"
-            app:layout_constraintTop_toBottomOf="@+id/separator" />
+            app:layout_constraintStart_toEndOf="@+id/img_uplink" />

        <com.google.android.material.textview.MaterialTextView
-            android:id="@+id/trans_uplink_doppler"
-            android:layout_width="wrap_content"
-            android:layout_height="wrap_content"
-            android:text="@string/trans_up_lowHigh_doppler"
-            android:textSize="15sp"
-            app:layout_constraintEnd_toEndOf="parent"
-            app:layout_constraintHorizontal_bias="0.5"
-            app:layout_constraintStart_toEndOf="@+id/trans_img_uplink_doppler"
-            app:layout_constraintTop_toBottomOf="@+id/trans_downlink_doppler" />
-
-        <com.google.android.material.textview.MaterialTextView
-            android:id="@+id/trans_mode"
+            android:id="@+id/mode"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginStart="6dp"
+            android:layout_marginTop="4dp"
            android:layout_marginBottom="2dp"
            android:text="@string/trans_mode"
-            android:textSize="15sp"
            app:layout_constraintBottom_toBottomOf="parent"
+            app:layout_constraintEnd_toStartOf="@+id/isInverted"
+            app:layout_constraintHorizontal_chainStyle="spread_inside"
            app:layout_constraintStart_toStartOf="parent"
-            app:layout_constraintTop_toBottomOf="@+id/trans_uplink_doppler" />
+            app:layout_constraintTop_toBottomOf="@+id/downlink" />

        <com.google.android.material.textview.MaterialTextView
-            android:id="@+id/trans_inverted"
+            android:id="@+id/isInverted"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginEnd="6dp"
            android:text="@string/trans_inverted"
-            android:textSize="15sp"
-            app:layout_constraintBaseline_toBaselineOf="@+id/trans_mode"
-            app:layout_constraintEnd_toEndOf="parent" />
+            app:layout_constraintBaseline_toBaselineOf="@+id/mode"
+            app:layout_constraintEnd_toEndOf="parent"
+            app:layout_constraintStart_toEndOf="@+id/mode" />

        <ImageView
-            android:id="@+id/trans_img"
-            android:layout_width="20dp"
-            android:layout_height="20dp"
+            android:id="@+id/img_trans"
+            android:layout_width="18dp"
+            android:layout_height="18dp"
            android:layout_marginStart="4dp"
-            android:layout_marginTop="4dp"
            android:contentDescription="@string/placeholder"
+            app:layout_constraintBottom_toBottomOf="@+id/description"
            app:layout_constraintStart_toStartOf="parent"
-            app:layout_constraintTop_toTopOf="parent"
+            app:layout_constraintTop_toTopOf="@+id/description"
            app:srcCompat="@drawable/ic_trans" />

        <ImageView
-            android:id="@+id/trans_img_downlink"
-            android:layout_width="20dp"
-            android:layout_height="20dp"
-            android:layout_marginTop="1dp"
+            android:id="@+id/img_downlink"
+            android:layout_width="18dp"
+            android:layout_height="18dp"
+            android:layout_marginEnd="4dp"
            android:contentDescription="@string/placeholder"
-            android:rotation="180"
-            app:layout_constraintBottom_toBottomOf="@+id/trans_downlink"
-            app:layout_constraintEnd_toStartOf="@+id/trans_downlink"
-            app:layout_constraintHorizontal_bias="0.5"
-            app:layout_constraintHorizontal_chainStyle="packed"
-            app:layout_constraintStart_toStartOf="parent"
-            app:layout_constraintTop_toTopOf="@+id/trans_downlink"
+            android:rotation="90"
+            app:layout_constraintBottom_toBottomOf="@+id/downlink"
+            app:layout_constraintEnd_toStartOf="@+id/guideline"
+            app:layout_constraintTop_toTopOf="@+id/downlink"
            app:srcCompat="@drawable/ic_arrow" />

        <ImageView
-            android:id="@+id/trans_img_uplink"
-            android:layout_width="20dp"
-            android:layout_height="20dp"
-            android:layout_marginTop="1dp"
+            android:id="@+id/img_uplink"
+            android:layout_width="18dp"
+            android:layout_height="18dp"
+            android:layout_marginStart="4dp"
            android:contentDescription="@string/placeholder"
-            app:layout_constraintBottom_toBottomOf="@+id/trans_uplink"
-            app:layout_constraintEnd_toStartOf="@+id/trans_uplink"
-            app:layout_constraintHorizontal_bias="0.5"
+            android:rotation="270"
+            app:layout_constraintBottom_toBottomOf="@+id/uplink"
            app:layout_constraintHorizontal_chainStyle="packed"
-            app:layout_constraintStart_toStartOf="parent"
-            app:layout_constraintTop_toBottomOf="@+id/trans_downlink"
+            app:layout_constraintStart_toStartOf="@+id/guideline"
+            app:layout_constraintTop_toTopOf="@+id/uplink"
            app:srcCompat="@drawable/ic_arrow" />

-        <ImageView
-            android:id="@+id/trans_img_downlink_doppler"
-            android:layout_width="16dp"
-            android:layout_height="16dp"
-            android:layout_marginTop="1dp"
-            android:layout_marginEnd="2dp"
-            android:contentDescription="@string/placeholder"
-            android:rotation="180"
-            app:layout_constraintBottom_toBottomOf="@+id/trans_downlink_doppler"
-            app:layout_constraintEnd_toStartOf="@+id/trans_downlink_doppler"
-            app:layout_constraintHorizontal_bias="0.5"
-            app:layout_constraintHorizontal_chainStyle="packed"
-            app:layout_constraintStart_toStartOf="parent"
-            app:layout_constraintTop_toTopOf="@+id/trans_downlink_doppler"
-            app:srcCompat="@drawable/ic_trans_doppler" />
-
-        <ImageView
-            android:id="@+id/trans_img_uplink_doppler"
-            android:layout_width="16dp"
-            android:layout_height="16dp"
-            android:layout_marginTop="1dp"
-            android:layout_marginEnd="2dp"
-            android:contentDescription="@string/placeholder"
-            app:layout_constraintBottom_toBottomOf="@+id/trans_uplink_doppler"
-            app:layout_constraintEnd_toStartOf="@+id/trans_uplink_doppler"
-            app:layout_constraintHorizontal_bias="0.5"
-            app:layout_constraintHorizontal_chainStyle="packed"
-            app:layout_constraintStart_toStartOf="parent"
-            app:layout_constraintTop_toBottomOf="@+id/trans_downlink_doppler"
-            app:srcCompat="@drawable/ic_trans_doppler" />
-
+        <androidx.constraintlayout.widget.Guideline
+            android:id="@+id/guideline"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:orientation="vertical"
+            app:layout_constraintGuide_percent="0.5" />

    </androidx.constraintlayout.widget.ConstraintLayout>
 </com.google.android.material.card.MaterialCardView>
@@ -45,10 +45,7 @@
    <string name="pref_time_utc_title">Показывать время пролета по UTC</string>

    <string name="no_mode">Модуляция: нет</string>
-    <string name="no_uplink">Восход: нет</string>
-    <string name="no_downlink">Нисход: нет</string>
-    <string name="no_uplink_doppler">Тек. восход: нет</string>
-    <string name="no_downlink_doppler">Тек. нисход: нет</string>
+    <string name="no_downlink_doppler">нет</string>
    <string name="no_trans">Не найдены трансиверы для этого спутника</string>

    <string name="error_updating_data">Ошибка импорта спутников</string>
@@ -63,14 +60,6 @@

    <string name="trans_mode">Модуляция: %s</string>
    <string name="trans_inverted">Инверсия: %s</string>
-    <string name="trans_up_low">Восход: %.4fMHz</string>
-    <string name="trans_up_lowHigh">Восход: %.4f - %.4fMHz</string>
-    <string name="trans_down_low">Нисход: %.4f MHz</string>
-    <string name="trans_down_lowHigh">Нисход: %.4f - %.4fMHz</string>
-    <string name="trans_up_low_doppler">Тек. восход: %.4fMHz</string>
-    <string name="trans_up_lowHigh_doppler">Тек. восход: %.4f - %.4fMHz</string>
-    <string name="trans_down_low_doppler">Тек. нисход: %.4fMHz</string>
-    <string name="trans_down_lowHigh_doppler">Тек. нисход: %.4f - %.4fMHz</string>

    <string name="about_subtitle">Приложение для слежения за спутниками радио и погоды
        для платформы Android</string>
@@ -22,9 +22,9 @@
    <color name="themeLight">#FFE082</color>
    <color name="themeDark">#FFCA28</color>
    <color name="greyDark">#121212</color>
-    <color name="greyLight">#C0C0C0</color>
+    <color name="greyLight">#D0D0D0</color>
    <color name="greyDivider">#808080</color>
-    <color name="greySurface">#1d1d1d</color>
+    <color name="greySurface">#1e1e1e</color>
    <!-- map colors -->
    <color name="satTrack">#B00020</color>
    <color name="satFootprint">#26FFE082</color>
@@ -46,10 +46,7 @@
    <string name="pref_time_utc_title">Show pass time in UTC</string>

    <string name="no_mode">Mode: null</string>
-    <string name="no_uplink">Uplink: null</string>
-    <string name="no_downlink">Downlink: null</string>
-    <string name="no_uplink_doppler">Curr. uplink: null</string>
-    <string name="no_downlink_doppler">Curr. downlink: null</string>
+    <string name="no_downlink_doppler">null</string>
    <string name="no_trans">No transceivers found for this satellite</string>

    <string name="error_updating_data">Error importing satellite data</string>
@@ -69,17 +66,11 @@
    <string name="pat_osm_latLon">Lat: %.1f°, Lon: %.1f°</string>
    <string name="pat_osm_vel">Vel: %.2f km/s</string>

-    <string name="trans_description" translatable="false">%s</string>
    <string name="trans_mode">Mode: %s</string>
    <string name="trans_inverted">Inverted: %s</string>
-    <string name="trans_up_low">Uplink: %.4fMHz</string>
-    <string name="trans_up_lowHigh">Uplink: %.4f - %.4fMHz</string>
-    <string name="trans_down_low">Downlink: %.4fMHz</string>
-    <string name="trans_down_lowHigh">Downlink: %.4f - %.4fMHz</string>
-    <string name="trans_up_low_doppler">Curr. uplink: %.4fMHz</string>
-    <string name="trans_up_lowHigh_doppler">Curr. uplink: %.4f - %.4fMHz</string>
-    <string name="trans_down_low_doppler">Curr. downlink: %.4fMHz</string>
-    <string name="trans_down_lowHigh_doppler">Curr. downlink: %.4f - %.4fMHz</string>
+    <string name="trans_description" translatable="false">%s</string>
+    <string name="trans_down_low_doppler" translatable="false">%.4f</string>
+    <string name="trans_down_lowHigh_doppler" translatable="false">%.4f - %.4f</string>

    <string name="about_subtitle">
        Amateur radio and weather satellites passes calculator for Android</string>
@@ -26,4 +26,10 @@
        <item name="android:statusBarColor">@android:color/transparent</item>
    </style>

+    <style name="TopBar">
+        <item name="android:layout_width">match_parent</item>
+        <item name="android:layout_height">48dp</item>
+        <item name="cardCornerRadius">0dp</item>
+    </style>
+
 </resources>