Cleanup of video pause button.

The "pause video" button had a few issues that needed to be cleaned up:
1. The accessibility text for the button was always "pause video".
I've changed this so that it says, "Turn on camera" or "Turn off camera"
to better indicate what pushing the button will do.
2. When the user accepts an incoming request to initiate a 1-way video
call, the button state would not be correct (the user's camera is
disabled, but the button would not reflect that).

Bug: 27944419
Bug: 28550284
Change-Id: I2594971ec21b5714ca2d750894a93b758f7a80e5

5 files changed, 29 insertions, 12 deletions

diff --git a/InCallUI/res/layout/call_button_fragment.xml b/InCallUI/res/layout/call_button_fragment.xml
index 6dbfbf73a..802e3de62 100644
--- a/InCallUI/res/layout/call_button_fragment.xml
+++ b/InCallUI/res/layout/call_button_fragment.xml
@@ -126,7 +126,7 @@
         <ToggleButton android:id="@+id/pauseVideoButton"
             style="@style/InCallCompoundButton"
             android:background="@drawable/btn_compound_video_off"
-            android:contentDescription="@string/onscreenPauseVideoText"
+            android:contentDescription="@string/onscreenTurnOffCameraText"
             android:visibility="gone" />
 
         <!-- "Change to audio call" for video calls. -->
diff --git a/InCallUI/res/values/strings.xml b/InCallUI/res/values/strings.xml
index 57a1b5389..7701cdb2d 100644
--- a/InCallUI/res/values/strings.xml
+++ b/InCallUI/res/values/strings.xml
@@ -313,8 +313,10 @@
     <!-- Text for the onscreen "Switch camera" button. When clicked, this switches the user's camera
          for video calling between the front-facing camera and the back-facing camera. -->
     <string name="onscreenSwitchCameraText">Switch camera</string>
-    <!-- Text for the onscreen "Pause video" button. -->
-    <string name="onscreenPauseVideoText">Pause video</string>
+    <!-- Text for the onscreen "turn on camera" button. -->
+    <string name="onscreenTurnOnCameraText">Turn on camera</string>
+    <!-- Text for the onscreen "turn off camera" button. -->
+    <string name="onscreenTurnOffCameraText">Turn off camera</string>
     <!-- Text for the onscreen overflow button, to see additional actions which can be done. -->
     <string name="onscreenOverflowText">More options</string>
 
diff --git a/InCallUI/src/com/android/incallui/CallButtonFragment.java b/InCallUI/src/com/android/incallui/CallButtonFragment.java
index 5a25b6a7b..6b633eaf3 100644
--- a/InCallUI/src/com/android/incallui/CallButtonFragment.java
+++ b/InCallUI/src/com/android/incallui/CallButtonFragment.java
@@ -65,7 +65,6 @@ public class CallButtonFragment
         implements CallButtonPresenter.CallButtonUi, OnMenuItemClickListener, OnDismissListener,
         View.OnClickListener {
 
-    private static final int INVALID_INDEX = -1;
     private int mButtonMaxVisible;
     // The button is currently visible in the UI
     private static final int BUTTON_VISIBLE = 1;
@@ -182,7 +181,7 @@ public class CallButtonFragment
         super.onActivityCreated(savedInstanceState);
 
         // set the buttons
-        updateAudioButtons(getPresenter().getSupportedAudio());
+        updateAudioButtons();
     }
 
     @Override
@@ -425,8 +424,14 @@ public class CallButtonFragment
     }
 
     @Override
-    public void setVideoPaused(boolean isPaused) {
-        mPauseVideoButton.setSelected(isPaused);
+    public void setVideoPaused(boolean isVideoPaused) {
+        mPauseVideoButton.setSelected(isVideoPaused);
+
+        if (isVideoPaused) {
+            mPauseVideoButton.setContentDescription(getText(R.string.onscreenTurnOnCameraText));
+        } else {
+            mPauseVideoButton.setContentDescription(getText(R.string.onscreenTurnOffCameraText));
+        }
     }
 
     @Override
@@ -505,7 +510,7 @@ public class CallButtonFragment
 
     @Override
     public void setAudio(int mode) {
-        updateAudioButtons(getPresenter().getSupportedAudio());
+        updateAudioButtons();
         refreshAudioModePopup();
 
         if (mPrevAudioMode != mode) {
@@ -516,7 +521,7 @@ public class CallButtonFragment
 
     @Override
     public void setSupportedAudio(int modeMask) {
-        updateAudioButtons(modeMask);
+        updateAudioButtons();
         refreshAudioModePopup();
     }
 
@@ -555,7 +560,7 @@ public class CallButtonFragment
     public void onDismiss(PopupMenu menu) {
         Log.d(this, "- onDismiss: " + menu);
         mAudioModePopupVisible = false;
-        updateAudioButtons(getPresenter().getSupportedAudio());
+        updateAudioButtons();
     }
 
     /**
@@ -600,7 +605,7 @@ public class CallButtonFragment
      * Updates the audio button so that the appriopriate visual layers
      * are visible based on the supported audio formats.
      */
-    private void updateAudioButtons(int supportedModes) {
+    private void updateAudioButtons() {
         final boolean bluetoothSupported = isSupported(CallAudioState.ROUTE_BLUETOOTH);
         final boolean speakerSupported = isSupported(CallAudioState.ROUTE_SPEAKER);
 
diff --git a/InCallUI/src/com/android/incallui/CallButtonPresenter.java b/InCallUI/src/com/android/incallui/CallButtonPresenter.java
index e8c2d4b13..df1cd6645 100644
--- a/InCallUI/src/com/android/incallui/CallButtonPresenter.java
+++ b/InCallUI/src/com/android/incallui/CallButtonPresenter.java
@@ -366,7 +366,6 @@ public class CallButtonPresenter extends Presenter<CallButtonPresenter.CallButto
     private void updateButtonsState(Call call) {
         Log.v(this, "updateButtonsState");
         final CallButtonUi ui = getUi();
-
         final boolean isVideo = VideoUtils.isVideoCall(call);
 
         // Common functionality (audio, hold, etc).
@@ -398,6 +397,9 @@ public class CallButtonPresenter extends Presenter<CallButtonPresenter.CallButto
         ui.showButton(BUTTON_DOWNGRADE_TO_AUDIO, showDowngradeToAudio);
         ui.showButton(BUTTON_SWITCH_CAMERA, isVideo);
         ui.showButton(BUTTON_PAUSE_VIDEO, isVideo);
+        if (isVideo) {
+            getUi().setVideoPaused(!VideoUtils.isTransmissionEnabled(call));
+        }
         ui.showButton(BUTTON_DIALPAD, true);
         ui.showButton(BUTTON_MERGE, showMerge);
 
diff --git a/InCallUI/src/com/android/incallui/VideoUtils.java b/InCallUI/src/com/android/incallui/VideoUtils.java
index 8641d60ec..a2eb8bcf2 100644
--- a/InCallUI/src/com/android/incallui/VideoUtils.java
+++ b/InCallUI/src/com/android/incallui/VideoUtils.java
@@ -45,6 +45,14 @@ public class VideoUtils {
         return VideoProfile.isBidirectional(call.getVideoState());
     }
 
+    public static boolean isTransmissionEnabled(Call call) {
+        if (!CompatUtils.isVideoCompatible()) {
+            return false;
+        }
+
+        return VideoProfile.isTransmissionEnabled(call.getVideoState());
+    }
+
     public static boolean isIncomingVideoCall(Call call) {
         if (!VideoUtils.isVideoCall(call)) {
             return false;