Added sliding button to answer/decline incoming call if device screen is locked

app/src/main/java/org/linphone/ui/call/fragment/IncomingCallFragment.kt

@@ -19,16 +19,23 @@
  */
 package org.linphone.ui.call.fragment
 
+import android.annotation.SuppressLint
 import android.os.Bundle
 import android.view.LayoutInflater
+import android.view.MotionEvent
 import android.view.View
 import android.view.ViewGroup
 import androidx.annotation.UiThread
 import androidx.lifecycle.ViewModelProvider
 import org.linphone.LinphoneApplication.Companion.coreContext
+import org.linphone.R
 import org.linphone.core.tools.Log
 import org.linphone.databinding.CallIncomingFragmentBinding
 import org.linphone.ui.call.viewmodel.CurrentCallViewModel
+import org.linphone.utils.AppUtils
+import kotlin.math.abs
+import kotlin.math.max
+import kotlin.math.min
 
 @UiThread
 class IncomingCallFragment : GenericCallFragment() {
@@ -40,6 +47,66 @@ class IncomingCallFragment : GenericCallFragment() {
 
     private lateinit var callViewModel: CurrentCallViewModel
 
+    private val marginSize = AppUtils.getDimension(R.dimen.sliding_accept_decline_call_margin)
+    private val areaSize = AppUtils.getDimension(R.dimen.call_button_size) + marginSize
+    private var initialX = 0f
+    private var slidingButtonX = 0f
+    private val slidingButtonTouchListener = View.OnTouchListener { view, event ->
+        val width = binding.bottomBar.root.width.toFloat()
+        val aboveAnswer = view.x + view.width > width - areaSize
+        val aboveDecline = view.x < areaSize
+
+        when (event.action) {
+            MotionEvent.ACTION_DOWN -> {
+                if (initialX == 0f) {
+                    initialX = view.x
+                }
+                slidingButtonX = view.x - event.rawX
+                true
+            }
+            MotionEvent.ACTION_UP -> {
+                if (aboveAnswer) {
+                    // Accept
+                    callViewModel.answer()
+                } else if (aboveDecline) {
+                    // Decline
+                    callViewModel.hangUp()
+                } else {
+                    // Animate going back to initial position
+                    view.animate()
+                        .x(initialX)
+                        .setDuration(500)
+                        .start()
+                }
+                true
+            }
+            MotionEvent.ACTION_MOVE -> {
+                callViewModel.slidingButtonAboveAnswer.value = aboveAnswer
+                callViewModel.slidingButtonAboveDecline.value = aboveDecline
+
+                val offset = view.x - initialX
+                val percent = abs(offset) / (width / 2)
+                if (offset > 0) {
+                    callViewModel.answerAlpha.value = 1f
+                    callViewModel.declineAlpha.value = 1f - percent
+                } else if (offset < 0) {
+                    callViewModel.answerAlpha.value = 1f - percent
+                    callViewModel.declineAlpha.value = 1f
+                }
+
+                view.animate()
+                    .x(min(max(marginSize, event.rawX + slidingButtonX), width - view.width - marginSize))
+                    .setDuration(0)
+                    .start()
+                true
+            }
+            else -> {
+                view.performClick()
+                false
+            }
+        }
+    }
+
     override fun onCreateView(
         inflater: LayoutInflater,
         container: ViewGroup?,
@@ -49,6 +116,7 @@ class IncomingCallFragment : GenericCallFragment() {
         return binding.root
     }
 
+    @SuppressLint("ClickableViewAccessibility")
     override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
         super.onViewCreated(view, savedInstanceState)
 
@@ -68,11 +136,14 @@ class IncomingCallFragment : GenericCallFragment() {
                 }
             }
         }
+
+        binding.bottomBar.slidingButton.setOnTouchListener(slidingButtonTouchListener)
     }
 
     override fun onResume() {
         super.onResume()
 
+        callViewModel.refreshKeyguardLockedStatus()
         coreContext.notificationsManager.setIncomingCallFragmentCurrentlyDisplayed(true)
     }
 

app/src/main/java/org/linphone/ui/call/viewmodel/CurrentCallViewModel.kt

@@ -20,6 +20,8 @@
 package org.linphone.ui.call.viewmodel
 
 import android.Manifest
+import android.app.KeyguardManager
+import android.content.Context
 import android.content.pm.PackageManager
 import androidx.annotation.AnyThread
 import androidx.annotation.UiThread
@@ -258,6 +260,18 @@ class CurrentCallViewModel
         MutableLiveData<Event<Boolean>>()
     }
 
+    // Sliding answer/decline button
+
+    val isScreenLocked = MutableLiveData<Boolean>()
+
+    val slidingButtonAboveAnswer = MutableLiveData<Boolean>()
+
+    val slidingButtonAboveDecline = MutableLiveData<Boolean>()
+
+    val answerAlpha = MutableLiveData<Float>()
+
+    val declineAlpha = MutableLiveData<Float>()
+
     lateinit var currentCall: Call
 
     private val contactsListener = object : ContactsListener {
@@ -517,32 +531,6 @@ class CurrentCallViewModel
         }
     }
 
-    @WorkerThread
-    private fun updateProximitySensor() {
-        if (::currentCall.isInitialized) {
-            val callState = currentCall.state
-            if (LinphoneUtils.isCallIncoming(callState)) {
-                proximitySensorEnabled.postValue(false)
-            } else if (LinphoneUtils.isCallOutgoing(callState)) {
-                val videoEnabled = currentCall.params.isVideoEnabled
-                proximitySensorEnabled.postValue(!videoEnabled)
-            } else {
-                if (isSendingVideo.value == true || isReceivingVideo.value == true) {
-                    proximitySensorEnabled.postValue(false)
-                } else {
-                    val outputAudioDevice = currentCall.outputAudioDevice ?: coreContext.core.outputAudioDevice
-                    if (outputAudioDevice != null && outputAudioDevice.type == AudioDevice.Type.Earpiece) {
-                        proximitySensorEnabled.postValue(true)
-                    } else {
-                        proximitySensorEnabled.postValue(false)
-                    }
-                }
-            }
-        } else {
-            proximitySensorEnabled.postValue(false)
-        }
-    }
-
     init {
         fullScreenMode.value = false
         operationInProgress.value = false
@@ -550,6 +538,10 @@ class CurrentCallViewModel
         videoUpdateInProgress.value = false
         microphoneRecordingVolume.value = 0f
 
+        refreshKeyguardLockedStatus()
+        answerAlpha.value = 1f
+        declineAlpha.value = 1f
+
         coreContext.postOnCoreThread { core ->
             hideSipAddresses.postValue(corePreferences.hideSipAddresses)
             coreContext.contactsManager.addListener(contactsListener)
@@ -613,6 +605,14 @@ class CurrentCallViewModel
         }
     }
 
+    @UiThread
+    fun refreshKeyguardLockedStatus() {
+        val keyguardManager = coreContext.context.getSystemService(Context.KEYGUARD_SERVICE) as KeyguardManager
+        val secure = keyguardManager.isKeyguardLocked
+        isScreenLocked.value = secure
+        Log.i("$TAG Device is [${if (secure) "locked" else "unlocked"}]")
+    }
+
     @UiThread
     fun answer() {
         coreContext.postOnCoreThread { core ->
@@ -1542,4 +1542,30 @@ class CurrentCallViewModel
         if (volume > VU_METER_MAX) return 1f
         return (volume - VU_METER_MIN) / (VU_METER_MAX - VU_METER_MIN)
     }
+
+    @WorkerThread
+    private fun updateProximitySensor() {
+        if (::currentCall.isInitialized) {
+            val callState = currentCall.state
+            if (LinphoneUtils.isCallIncoming(callState)) {
+                proximitySensorEnabled.postValue(false)
+            } else if (LinphoneUtils.isCallOutgoing(callState)) {
+                val videoEnabled = currentCall.params.isVideoEnabled
+                proximitySensorEnabled.postValue(!videoEnabled)
+            } else {
+                if (isSendingVideo.value == true || isReceivingVideo.value == true) {
+                    proximitySensorEnabled.postValue(false)
+                } else {
+                    val outputAudioDevice = currentCall.outputAudioDevice ?: coreContext.core.outputAudioDevice
+                    if (outputAudioDevice != null && outputAudioDevice.type == AudioDevice.Type.Earpiece) {
+                        proximitySensorEnabled.postValue(true)
+                    } else {
+                        proximitySensorEnabled.postValue(false)
+                    }
+                }
+            }
+        } else {
+            proximitySensorEnabled.postValue(false)
+        }
+    }
 }

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

@@ -0,0 +1,21 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:aapt="http://schemas.android.com/aapt"
+    android:width="32dp"
+    android:height="32dp"
+    android:viewportWidth="32"
+    android:viewportHeight="32">
+  <path
+      android:pathData="M5.292,20.292L15.292,10.292C15.385,10.199 15.495,10.125 15.616,10.075C15.738,10.025 15.868,9.999 15.999,9.999C16.131,9.999 16.261,10.025 16.382,10.075C16.504,10.125 16.614,10.199 16.707,10.292L26.707,20.292C26.895,20.48 27,20.734 27,20.999C27,21.265 26.895,21.519 26.707,21.707C26.519,21.895 26.265,22 25.999,22C25.734,22 25.48,21.895 25.292,21.707L15.999,12.413L6.707,21.707C6.614,21.8 6.504,21.874 6.382,21.924C6.261,21.974 6.131,22 5.999,22C5.868,22 5.738,21.974 5.617,21.924C5.495,21.874 5.385,21.8 5.292,21.707C5.199,21.614 5.125,21.504 5.075,21.382C5.025,21.261 4.999,21.131 4.999,20.999C4.999,20.868 5.025,20.738 5.075,20.617C5.125,20.495 5.199,20.385 5.292,20.292Z">
+    <aapt:attr name="android:fillColor">
+      <gradient 
+          android:startX="15.999"
+          android:startY="9.999"
+          android:endX="15.999"
+          android:endY="22"
+          android:type="linear">
+        <item android:offset="0" android:color="#FF85E4A8"/>
+        <item android:offset="1" android:color="#FF2E3030"/>
+      </gradient>
+    </aapt:attr>
+  </path>
+</vector>

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

@@ -0,0 +1,21 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:aapt="http://schemas.android.com/aapt"
+    android:width="32dp"
+    android:height="32dp"
+    android:viewportWidth="32"
+    android:viewportHeight="32">
+  <path
+      android:pathData="M26.708,11.708L16.708,21.708C16.615,21.801 16.505,21.875 16.383,21.925C16.262,21.975 16.132,22.001 16.001,22.001C15.869,22.001 15.739,21.975 15.618,21.925C15.496,21.875 15.386,21.801 15.293,21.708L5.293,11.708C5.105,11.52 5,11.266 5,11.001C5,10.735 5.105,10.481 5.293,10.293C5.481,10.105 5.735,10 6.001,10C6.266,10 6.52,10.105 6.708,10.293L16.001,19.587L25.293,10.293C25.386,10.2 25.496,10.126 25.618,10.076C25.739,10.026 25.869,10 26.001,10C26.132,10 26.262,10.026 26.383,10.076C26.505,10.126 26.615,10.2 26.708,10.293C26.801,10.386 26.875,10.496 26.925,10.618C26.975,10.739 27.001,10.869 27.001,11.001C27.001,11.132 26.975,11.262 26.925,11.384C26.875,11.505 26.801,11.615 26.708,11.708Z">
+    <aapt:attr name="android:fillColor">
+      <gradient 
+          android:startX="16.001"
+          android:startY="22.001"
+          android:endX="16.001"
+          android:endY="10"
+          android:type="linear">
+        <item android:offset="0" android:color="#FFDD5F5F"/>
+        <item android:offset="1" android:color="#FF2E3030"/>
+      </gradient>
+    </aapt:attr>
+  </path>
+</vector>

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

@@ -14,6 +14,146 @@
         android:layout_height="@dimen/call_main_actions_menu_height"
         android:background="@drawable/shape_call_bottom_sheet_background">
 
+        <androidx.constraintlayout.widget.Group
+            android:id="@+id/sliding_controls"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:visibility="@{viewModel.isScreenLocked ? View.VISIBLE : View.GONE}"
+            app:constraint_referenced_ids="sliding_button, decline, answer, arrow_green_1, arrow_green_2, arrow_green_3, arrow_red_1, arrow_red_2, arrow_red_3" />
+
+        <androidx.constraintlayout.widget.Group
+            android:id="@+id/simple_controls"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:visibility="@{viewModel.isScreenLocked ? View.GONE : View.VISIBLE, default=gone}"
+            app:constraint_referenced_ids="hang_up, answer_call"/>
+
+        <ImageView
+            style="@style/default_text_style_700"
+            android:id="@+id/decline"
+            android:layout_width="@dimen/call_button_size"
+            android:layout_height="@dimen/call_button_size"
+            android:layout_marginStart="@dimen/sliding_accept_decline_call_margin"
+            android:padding="@dimen/call_button_icon_padding"
+            android:src="@drawable/phone_disconnect"
+            android:alpha="@{viewModel.declineAlpha}"
+            android:contentDescription="@null"
+            app:tint="?attr/color_danger_500"
+            app:layout_constraintHorizontal_chainStyle="spread_inside"
+            app:layout_constraintTop_toTopOf="parent"
+            app:layout_constraintBottom_toBottomOf="parent"
+            app:layout_constraintStart_toStartOf="parent"
+            app:layout_constraintEnd_toStartOf="@id/arrow_red_1"/>
+
+        <ImageView
+            android:id="@+id/arrow_red_1"
+            android:layout_width="wrap_content"
+            android:layout_height="28dp"
+            android:src="@drawable/arrow_red"
+            android:alpha="@{viewModel.declineAlpha}"
+            android:contentDescription="@null"
+            android:rotation="90"
+            app:layout_constraintTop_toTopOf="@id/decline"
+            app:layout_constraintBottom_toBottomOf="@id/decline"
+            app:layout_constraintStart_toEndOf="@id/decline"
+            app:layout_constraintEnd_toStartOf="@id/arrow_red_2" />
+
+        <ImageView
+            android:id="@+id/arrow_red_2"
+            android:layout_width="wrap_content"
+            android:layout_height="30dp"
+            android:src="@drawable/arrow_red"
+            android:alpha="@{viewModel.declineAlpha}"
+            android:contentDescription="@null"
+            android:rotation="90"
+            app:layout_constraintTop_toTopOf="@id/decline"
+            app:layout_constraintBottom_toBottomOf="@id/decline"
+            app:layout_constraintStart_toEndOf="@id/arrow_red_1"
+            app:layout_constraintEnd_toStartOf="@id/arrow_red_3" />
+
+        <ImageView
+            android:id="@+id/arrow_red_3"
+            android:layout_width="wrap_content"
+            android:layout_height="32dp"
+            android:src="@drawable/arrow_red"
+            android:alpha="@{viewModel.declineAlpha}"
+            android:contentDescription="@null"
+            android:rotation="90"
+            app:layout_constraintTop_toTopOf="@id/decline"
+            app:layout_constraintBottom_toBottomOf="@id/decline"
+            app:layout_constraintStart_toEndOf="@id/arrow_red_2"
+            app:layout_constraintEnd_toStartOf="@id/sliding_button"/>
+
+        <ImageView
+            android:id="@+id/arrow_green_1"
+            android:layout_width="wrap_content"
+            android:layout_height="32dp"
+            android:src="@drawable/arrow_green"
+            android:alpha="@{viewModel.answerAlpha}"
+            android:contentDescription="@null"
+            android:rotation="90"
+            app:layout_constraintTop_toTopOf="@id/answer"
+            app:layout_constraintBottom_toBottomOf="@id/answer"
+            app:layout_constraintStart_toEndOf="@id/sliding_button"
+            app:layout_constraintEnd_toStartOf="@id/arrow_green_2" />
+
+        <ImageView
+            android:id="@+id/arrow_green_2"
+            android:layout_width="wrap_content"
+            android:layout_height="30dp"
+            android:src="@drawable/arrow_green"
+            android:alpha="@{viewModel.answerAlpha}"
+            android:contentDescription="@null"
+            android:rotation="90"
+            app:layout_constraintTop_toTopOf="@id/answer"
+            app:layout_constraintBottom_toBottomOf="@id/answer"
+            app:layout_constraintStart_toEndOf="@id/arrow_green_1"
+            app:layout_constraintEnd_toStartOf="@id/arrow_green_3" />
+
+        <ImageView
+            android:id="@+id/arrow_green_3"
+            android:layout_width="wrap_content"
+            android:layout_height="28dp"
+            android:src="@drawable/arrow_green"
+            android:alpha="@{viewModel.answerAlpha}"
+            android:contentDescription="@null"
+            android:rotation="90"
+            app:layout_constraintTop_toTopOf="@id/answer"
+            app:layout_constraintBottom_toBottomOf="@id/answer"
+            app:layout_constraintStart_toEndOf="@id/arrow_green_2"
+            app:layout_constraintEnd_toStartOf="@id/answer" />
+
+        <ImageView
+            style="@style/default_text_style_700"
+            android:id="@+id/answer"
+            android:layout_width="@dimen/call_button_size"
+            android:layout_height="@dimen/call_button_size"
+            android:layout_marginEnd="@dimen/sliding_accept_decline_call_margin"
+            android:padding="@dimen/call_button_icon_padding"
+            android:src="@drawable/phone_call"
+            android:alpha="@{viewModel.answerAlpha}"
+            android:contentDescription="@null"
+            app:tint="?attr/color_success_500"
+            app:layout_constraintTop_toTopOf="parent"
+            app:layout_constraintBottom_toBottomOf="parent"
+            app:layout_constraintStart_toEndOf="@id/arrow_green_3"
+            app:layout_constraintEnd_toEndOf="parent" />
+
+        <ImageView
+            android:id="@+id/sliding_button"
+            android:layout_width="@dimen/call_button_size"
+            android:layout_height="@dimen/call_button_size"
+            android:padding="@dimen/call_button_icon_padding"
+            android:background="@drawable/shape_round_in_call_button_background"
+            android:src="@{viewModel.slidingButtonAboveAnswer ? @drawable/phone_call : viewModel.slidingButtonAboveDecline ? @drawable/phone_disconnect : viewModel.isVideoEnabled ? @drawable/video_camera : @drawable/phone, default=@drawable/phone}"
+            android:contentDescription="@{viewModel.isVideoEnabled ? @string/content_description_answer_video_call : @string/content_description_answer_audio_call}"
+            app:layout_constraintTop_toTopOf="parent"
+            app:layout_constraintBottom_toBottomOf="parent"
+            app:layout_constraintStart_toEndOf="@id/arrow_red_3"
+            app:layout_constraintEnd_toStartOf="@id/arrow_green_1"
+            app:tint="@color/bc_white"
+            android:backgroundTint="@{viewModel.slidingButtonAboveAnswer ? @color/green_success_500 : viewModel.slidingButtonAboveDecline ? @color/red_danger_500 : @color/gray_500, default=@color/gray_500}"/>
+
         <ImageView
             android:id="@+id/hang_up"
             android:layout_width="wrap_content"
@@ -44,32 +184,12 @@
             android:paddingTop="15dp"
             android:paddingEnd="30dp"
             android:paddingBottom="15dp"
-            android:src="@drawable/phone"
+            android:src="@{viewModel.isVideoEnabled ? @drawable/video_camera : @drawable/phone, default=@drawable/phone}"
-            android:visibility="@{viewModel.isVideoEnabled ? View.GONE : View.VISIBLE}"
+            android:contentDescription="@{viewModel.isVideoEnabled ? @string/content_description_answer_video_call : @string/content_description_answer_audio_call}"
-            android:contentDescription="@string/content_description_answer_audio_call"
-            app:layout_constraintTop_toTopOf="parent"
-            app:layout_constraintBottom_toBottomOf="parent"
-            app:layout_constraintEnd_toEndOf="@id/answer_video_call"
-            app:layout_constraintStart_toEndOf="@id/hang_up"
-            app:tint="@color/bc_white" />
-
-        <ImageView
-            android:id="@+id/answer_video_call"
-            android:layout_width="wrap_content"
-            android:layout_height="@dimen/call_button_size"
-            android:background="@drawable/squircle_green_button_background"
-            android:onClick="@{() -> viewModel.answer()}"
-            android:paddingStart="30dp"
-            android:paddingTop="15dp"
-            android:paddingEnd="30dp"
-            android:paddingBottom="15dp"
-            android:src="@drawable/video_camera"
-            android:visibility="@{viewModel.isVideoEnabled ? View.VISIBLE : View.GONE, default=gone}"
-            android:contentDescription="@string/content_description_answer_video_call"
             app:layout_constraintTop_toTopOf="parent"
             app:layout_constraintBottom_toBottomOf="parent"
             app:layout_constraintEnd_toEndOf="parent"
-            app:layout_constraintStart_toEndOf="@id/answer_call"
+            app:layout_constraintStart_toEndOf="@id/hang_up"
             app:tint="@color/bc_white" />
 
     </androidx.constraintlayout.widget.ConstraintLayout>

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

@@ -65,6 +65,7 @@
     <dimen name="call_round_corners_texture_view_radius">20dp</dimen>
     <dimen name="call_pip_round_corners_texture_view_radius">5dp</dimen>
     <dimen name="call_button_size">55dp</dimen>
+    <dimen name="sliding_accept_decline_call_margin">10dp</dimen>
     <dimen name="call_button_icon_padding">15dp</dimen>
     <dimen name="call_dtmf_button_size">65dp</dimen>
     <dimen name="call_extra_button_top_margin">30dp</dimen>