chrome/browser/android/compositor/scene_layer/scene_layer.cc

   1 // Copyright 2015 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 #include "chrome/browser/android/compositor/scene_layer/scene_layer.h"
   6
   7 #include "cc/layers/layer.h"
   8 #include "jni/SceneLayer_jni.h"
   9
  10 namespace chrome {
  11 namespace android {
  12
  13 // static
  14 SceneLayer* SceneLayer::FromJavaObject(JNIEnv* env, jobject jobj) {
  15   if (jobj == nullptr)
  16     return nullptr;
  17   return reinterpret_cast<SceneLayer*>(Java_SceneLayer_getNativePtr(env, jobj));
  18 }
  19
  20 SceneLayer::SceneLayer(JNIEnv* env, jobject jobj)
  21     : SceneLayer(env, jobj, cc::Layer::Create()) {
  22 }
  23
  24 SceneLayer::SceneLayer(JNIEnv* env,
  25                        jobject jobj,
  26                        scoped_refptr<cc::Layer> layer)
  27     : weak_java_scene_layer_(env, jobj), layer_(layer) {
  28   Java_SceneLayer_setNativePtr(env, jobj, reinterpret_cast<intptr_t>(this));
  29 }
  30
  31 SceneLayer::~SceneLayer() {
  32   JNIEnv* env = base::android::AttachCurrentThread();
  33   ScopedJavaLocalRef<jobject> jobj = weak_java_scene_layer_.get(env);
  34   if (jobj.is_null())
  35     return;
  36
  37   Java_SceneLayer_setNativePtr(
  38       env, jobj.obj(),
  39       reinterpret_cast<intptr_t>(static_cast<SceneLayer*>(NULL)));
  40 }
  41
  42 void SceneLayer::OnDetach() {
  43   layer()->RemoveFromParent();
  44 }
  45
  46 void SceneLayer::Destroy(JNIEnv* env, jobject jobj) {
  47   delete this;
  48 }
  49
  50 bool SceneLayer::ShouldShowBackground() {
  51   return false;
  52 }
  53
  54 SkColor SceneLayer::GetBackgroundColor() {
  55   return SK_ColorWHITE;
  56 }
  57
  58 static jlong Init(JNIEnv* env, jobject jobj) {
  59   // This will automatically bind to the Java object and pass ownership there.
  60   SceneLayer* tree_provider = new SceneLayer(env, jobj);
  61   return reinterpret_cast<intptr_t>(tree_provider);
  62 }
  63
  64 bool RegisterSceneLayer(JNIEnv* env) {
  65   return RegisterNativesImpl(env);
  66 }
  67
  68 }  // namespace android
  69 }  // namespace chrome