Add absolute mouse support for styluses and mice prior to Oreo

app/src/main/java/com/limelight/binding/input/capture/AndroidNativePointerCaptureProvider.java

@@ -1,17 +1,22 @@
 package com.limelight.binding.input.capture;
 
 import android.annotation.TargetApi;
+import android.app.Activity;
 import android.os.Build;
 import android.view.InputDevice;
 import android.view.MotionEvent;
 import android.view.View;
 
-@TargetApi(Build.VERSION_CODES.O)
-public class AndroidNativePointerCaptureProvider extends InputCaptureProvider {
 
+// We extend AndroidPointerIconCaptureProvider because we want to also get the
+// pointer icon hiding behavior over our stream view just in case pointer capture
+// is unavailable on this system (ex: DeX, ChromeOS)
+@TargetApi(Build.VERSION_CODES.O)
+public class AndroidNativePointerCaptureProvider extends AndroidPointerIconCaptureProvider {
     private View targetView;
 
-    public AndroidNativePointerCaptureProvider(View targetView) {
+    public AndroidNativePointerCaptureProvider(Activity activity, View targetView) {
+        super(activity, targetView);
         this.targetView = targetView;
     }
 
@@ -31,11 +36,6 @@ public class AndroidNativePointerCaptureProvider extends InputCaptureProvider {
         targetView.releasePointerCapture();
     }
 
-    @Override
-    public boolean isCapturingActive() {
-        return targetView.hasPointerCapture();
-    }
-
     @Override
     public boolean eventHasRelativeMouseAxes(MotionEvent event) {
         return event.getSource() == InputDevice.SOURCE_MOUSE_RELATIVE;

app/src/main/java/com/limelight/binding/input/capture/AndroidPointerIconCaptureProvider.java

@@ -7,55 +7,30 @@ import android.os.Build;
 import android.view.MotionEvent;
 import android.view.PointerIcon;
 import android.view.View;
-import android.view.ViewGroup;
 
 @TargetApi(Build.VERSION_CODES.N)
 public class AndroidPointerIconCaptureProvider extends InputCaptureProvider {
-    private ViewGroup rootViewGroup;
+    private View targetView;
     private Context context;
 
-    public AndroidPointerIconCaptureProvider(Activity activity) {
+    public AndroidPointerIconCaptureProvider(Activity activity, View targetView) {
         this.context = activity;
-        this.rootViewGroup = (ViewGroup) activity.getWindow().getDecorView();
+        this.targetView = targetView;
     }
 
     public static boolean isCaptureProviderSupported() {
         return Build.VERSION.SDK_INT >= Build.VERSION_CODES.N;
     }
 
-    private void setPointerIconOnAllViews(PointerIcon icon) {
-        for (int i = 0; i < rootViewGroup.getChildCount(); i++) {
-            View view = rootViewGroup.getChildAt(i);
-            view.setPointerIcon(icon);
-        }
-        rootViewGroup.setPointerIcon(icon);
-    }
-
     @Override
     public void enableCapture() {
         super.enableCapture();
-        setPointerIconOnAllViews(PointerIcon.getSystemIcon(context, PointerIcon.TYPE_NULL));
+        targetView.setPointerIcon(PointerIcon.getSystemIcon(context, PointerIcon.TYPE_NULL));
     }
 
     @Override
     public void disableCapture() {
         super.disableCapture();
-        setPointerIconOnAllViews(null);
-    }
-
-    @Override
-    public boolean eventHasRelativeMouseAxes(MotionEvent event) {
-        return event.getAxisValue(MotionEvent.AXIS_RELATIVE_X) != 0 ||
-                event.getAxisValue(MotionEvent.AXIS_RELATIVE_Y) != 0;
-    }
-
-    @Override
-    public float getRelativeAxisX(MotionEvent event) {
-        return event.getAxisValue(MotionEvent.AXIS_RELATIVE_X);
-    }
-
-    @Override
-    public float getRelativeAxisY(MotionEvent event) {
-        return event.getAxisValue(MotionEvent.AXIS_RELATIVE_Y);
+        targetView.setPointerIcon(null);
     }
 }

app/src/main/java/com/limelight/binding/input/capture/InputCaptureManager.java

@@ -12,7 +12,7 @@ public class InputCaptureManager {
     public static InputCaptureProvider getInputCaptureProvider(Activity activity, EvdevListener rootListener) {
         if (AndroidNativePointerCaptureProvider.isCaptureProviderSupported()) {
             LimeLog.info("Using Android O+ native mouse capture");
-            return new AndroidNativePointerCaptureProvider(activity.findViewById(R.id.surfaceView));
+            return new AndroidNativePointerCaptureProvider(activity, activity.findViewById(R.id.surfaceView));
         }
         // LineageOS implemented broken NVIDIA capture extensions, so avoid using them on root builds.
         // See https://github.com/LineageOS/android_frameworks_base/commit/d304f478a023430f4712dbdc3ee69d9ad02cebd3
@@ -28,7 +28,7 @@ public class InputCaptureManager {
             // Android N's native capture can't capture over system UI elements
             // so we want to only use it if there's no other option.
             LimeLog.info("Using Android N+ pointer hiding");
-            return new AndroidPointerIconCaptureProvider(activity);
+            return new AndroidPointerIconCaptureProvider(activity, activity.findViewById(R.id.surfaceView));
         }
         else {
             LimeLog.info("Mouse capture not available");