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 "content/public/browser/android/compositor.h"
   9 #include "jni/SceneLayer_jni.h"
  10
  11 namespace chrome {
  12 namespace android {
  13
  14 // static
  15 SceneLayer* SceneLayer::FromJavaObject(JNIEnv* env, jobject jobj) {
  16   if (jobj == nullptr)
  17     return nullptr;
  18   return reinterpret_cast<SceneLayer*>(Java_SceneLayer_getNativePtr(env, jobj));
  19 }
  20
  21 SceneLayer::SceneLayer(JNIEnv* env, jobject jobj)
  22     : SceneLayer(env,
  23                  jobj,
  24                  cc::Layer::Create(content::Compositor::LayerSettings())) {
  25 }
  26
  27 SceneLayer::SceneLayer(JNIEnv* env,
  28                        jobject jobj,
  29                        scoped_refptr<cc::Layer> layer)
  30     : weak_java_scene_layer_(env, jobj), layer_(layer) {
  31   Java_SceneLayer_setNativePtr(env, jobj, reinterpret_cast<intptr_t>(this));
  32 }
  33
  34 SceneLayer::~SceneLayer() {
  35   JNIEnv* env = base::android::AttachCurrentThread();
  36   ScopedJavaLocalRef<jobject> jobj = weak_java_scene_layer_.get(env);
  37   if (jobj.is_null())
  38     return;
  39
  40   Java_SceneLayer_setNativePtr(
  41       env, jobj.obj(),
  42       reinterpret_cast<intptr_t>(static_cast<SceneLayer*>(NULL)));
  43 }
  44
  45 void SceneLayer::OnDetach() {
  46   layer()->RemoveFromParent();
  47 }
  48
  49 void SceneLayer::Destroy(JNIEnv* env, jobject jobj) {
  50   delete this;
  51 }
  52
  53 bool SceneLayer::ShouldShowBackground() {
  54   return false;
  55 }
  56
  57 SkColor SceneLayer::GetBackgroundColor() {
  58   return SK_ColorWHITE;
  59 }
  60
  61 static jlong Init(JNIEnv* env, const JavaParamRef<jobject>& jobj) {
  62   // This will automatically bind to the Java object and pass ownership there.
  63   SceneLayer* tree_provider = new SceneLayer(env, jobj);
  64   return reinterpret_cast<intptr_t>(tree_provider);
  65 }
  66
  67 bool RegisterSceneLayer(JNIEnv* env) {
  68   return RegisterNativesImpl(env);
  69 }
  70
  71 }  // namespace android
  72 }  // namespace chrome