1 // Copyright 2013 The Chromium Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 package org.chromium.mojo; 6 7 import android.app.Activity; 8 import android.content.Context; 9 import android.view.MotionEvent; 10 import android.view.Surface; 11 import android.view.SurfaceHolder; 12 import android.view.SurfaceView; 13 14 import org.chromium.base.CalledByNative; 15 import org.chromium.base.JNINamespace; 16 17 /** 18 * Exposes SurfaceView to native code. 19 */ 20 @JNINamespace("mojo::services") 21 public class NativeViewportAndroid extends SurfaceView { 22 23 private long mNativeMojoViewport; 24 private final SurfaceHolder.Callback mSurfaceCallback; 25 26 @SuppressWarnings("unused") 27 @CalledByNative createForActivity(Activity activity, long nativeViewport)28 public static void createForActivity(Activity activity, long nativeViewport) { 29 activity.setContentView(new NativeViewportAndroid(activity, nativeViewport)); 30 } 31 NativeViewportAndroid(Context context, long nativeViewport)32 public NativeViewportAndroid(Context context, long nativeViewport) { 33 super(context); 34 35 mNativeMojoViewport = nativeViewport; 36 assert mNativeMojoViewport != 0; 37 38 mSurfaceCallback = new SurfaceHolder.Callback() { 39 @Override 40 public void surfaceChanged(SurfaceHolder holder, int format, int width, int height) { 41 assert mNativeMojoViewport != 0; 42 nativeSurfaceSetSize(mNativeMojoViewport, width, height); 43 } 44 45 @Override 46 public void surfaceCreated(SurfaceHolder holder) { 47 assert mNativeMojoViewport != 0; 48 nativeSurfaceCreated(mNativeMojoViewport, holder.getSurface()); 49 } 50 51 @Override 52 public void surfaceDestroyed(SurfaceHolder holder) { 53 assert mNativeMojoViewport != 0; 54 nativeSurfaceDestroyed(mNativeMojoViewport); 55 } 56 }; 57 getHolder().addCallback(mSurfaceCallback); 58 59 } 60 61 // TODO(abarth): Someone needs to call destroy at some point. destroy()62 public void destroy() { 63 getHolder().removeCallback(mSurfaceCallback); 64 nativeDestroy(mNativeMojoViewport); 65 mNativeMojoViewport = 0; 66 } 67 68 @Override onTouchEvent(MotionEvent event)69 public boolean onTouchEvent(MotionEvent event) { 70 return nativeTouchEvent(mNativeMojoViewport, 71 event.getPointerId(0), 72 event.getAction(), 73 event.getX(), event.getY(), 74 event.getEventTime()); 75 } 76 nativeDestroy(long nativeNativeViewportAndroid)77 private static native void nativeDestroy(long nativeNativeViewportAndroid); nativeSurfaceCreated( long nativeNativeViewportAndroid, Surface surface)78 private static native void nativeSurfaceCreated( 79 long nativeNativeViewportAndroid, Surface surface); nativeSurfaceDestroyed( long nativeNativeViewportAndroid)80 private static native void nativeSurfaceDestroyed( 81 long nativeNativeViewportAndroid); nativeSurfaceSetSize( long nativeNativeViewportAndroid, int width, int height)82 private static native void nativeSurfaceSetSize( 83 long nativeNativeViewportAndroid, 84 int width, int height); nativeTouchEvent( long nativeNativeViewportAndroid, int pointerId, int action, float x, float y, long timeMs)85 private static native boolean nativeTouchEvent( 86 long nativeNativeViewportAndroid, 87 int pointerId, 88 int action, 89 float x, float y, 90 long timeMs); 91 }; 92