src/mojo/services/native_viewport/android/src/org/chromium/mojo/MojoViewport.java

   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.util.AttributeSet;
  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 @JNINamespace("mojo::services")
  18 public class MojoViewport extends SurfaceView {
  19
  20     private int mNativeMojoViewport;
  21     private final SurfaceHolder.Callback mSurfaceCallback;
  22
  23     @SuppressWarnings("unused")
  24     @CalledByNative
  25     public static void createForActivity(Activity activity, int init) {
  26         activity.setContentView(new MojoViewport(activity, init));
  27     }
  28
  29     public MojoViewport(Context context, int init) {
  30         super(context);
  31
  32         mNativeMojoViewport = nativeInit(init);
  33         assert mNativeMojoViewport != 0;
  34
  35         mSurfaceCallback = new SurfaceHolder.Callback() {
  36             @Override
  37             public void surfaceChanged(SurfaceHolder holder, int format, int width, int height) {
  38                 assert mNativeMojoViewport != 0;
  39                 nativeSurfaceSetSize(mNativeMojoViewport, width, height);
  40             }
  41
  42             @Override
  43             public void surfaceCreated(SurfaceHolder holder) {
  44                 assert mNativeMojoViewport != 0;
  45                 nativeSurfaceCreated(mNativeMojoViewport, holder.getSurface());
  46             }
  47
  48             @Override
  49             public void surfaceDestroyed(SurfaceHolder holder) {
  50                 assert mNativeMojoViewport != 0;
  51                 nativeSurfaceDestroyed(mNativeMojoViewport);
  52             }
  53         };
  54         getHolder().addCallback(mSurfaceCallback);
  55
  56     }
  57
  58     // TODO(abarth): Someone needs to call destroy at some point.
  59     public void destroy() {
  60         getHolder().removeCallback(mSurfaceCallback);
  61         nativeDestroy(mNativeMojoViewport);
  62         mNativeMojoViewport = 0;
  63     }
  64
  65     private static native int nativeInit(int init);
  66     private static native void nativeDestroy(int nativeMojoViewport);
  67     private static native void nativeSurfaceCreated(int nativeMojoViewport, Surface surface);
  68     private static native void nativeSurfaceDestroyed(int nativeMojoViewport);
  69     private static native void nativeSurfaceSetSize(int nativeMojoViewport, int width, int height);
  70 };