prepare for pointer capture

Change-Id: I80e19676f7261ff423f78a4765ce9aac039434fe

java/com/libremobileos/vncflinger/VncFlinger.java

@@ -193,6 +193,11 @@ public class VncFlinger extends Service implements DisplayManager.DisplayListene
                     mOldPointerIcon = icon;
                     mOldPointerIconId = iconId;
                 }
+
+                @Override
+                public void onCaptureChanged(boolean enabled) throws RemoteException {
+                    notifyServerCaptureChanged(enabled);
+                }
             });
             inputManager.setForceNullCursor(true);
         } else {
@@ -391,4 +396,6 @@ public class VncFlinger extends Service implements DisplayManager.DisplayListene
     private native void endAudioStreamer();
 
     private native void notifyServerCursorChanged(PointerIcon icon);
+
+    private native void notifyServerCaptureChanged(boolean enabled);
 }

src/vncflinger/AndroidDesktop.h

@@ -68,7 +68,7 @@ class AndroidDesktop : public rfb::SDesktop,
     int32_t mLayerId = -1;
     sp<VirtualDisplay> mVirtualDisplay;
     int32_t _width = 1, _height = 1, _rotation = 0;
-    bool touch = false, relative = false, clipboard = false;
+    bool touch = false, relative = false, clipboard = false, capture = false;
     std::mutex jniConfigMutex;
   private:
     virtual void notify();

src/vncflinger/main.cpp

@@ -115,6 +115,14 @@ extern "C" void Java_com_libremobileos_vncflinger_VncFlinger_notifyServerCursorC
     return;
 }
 
+extern "C" void Java_com_libremobileos_vncflinger_VncFlinger_notifyServerCaptureChanged(
+    JNIEnv* env, jboolean enabled) {
+    if (desktop != NULL) {
+        desktop->capture = enabled;
+    }
+    return;
+}
+
 extern "C" jint Java_com_libremobileos_vncflinger_VncFlinger_initializeVncFlinger(JNIEnv *env,
                                                                                    jobject thiz,
                                                                                    jobjectArray command_line_args) {