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      1 // Copyright (c) 2012 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 "content/browser/android/content_view_render_view.h"
      6 
      7 #include "base/android/jni_android.h"
      8 #include "base/android/jni_string.h"
      9 #include "base/android/scoped_java_ref.h"
     10 #include "base/bind.h"
     11 #include "base/lazy_instance.h"
     12 #include "base/memory/scoped_ptr.h"
     13 #include "base/message_loop/message_loop.h"
     14 #include "cc/layers/layer.h"
     15 #include "content/browser/android/content_view_core_impl.h"
     16 #include "content/public/browser/android/compositor.h"
     17 #include "content/public/browser/android/content_view_layer_renderer.h"
     18 #include "jni/ContentViewRenderView_jni.h"
     19 #include "ui/gfx/size.h"
     20 
     21 #include <android/native_window_jni.h>
     22 
     23 using base::android::ScopedJavaLocalRef;
     24 
     25 namespace content {
     26 
     27 // static
     28 bool ContentViewRenderView::RegisterContentViewRenderView(JNIEnv* env) {
     29   return RegisterNativesImpl(env);
     30 }
     31 
     32 ContentViewRenderView::ContentViewRenderView()
     33     : scheduled_composite_(false),
     34       weak_factory_(this) {
     35 }
     36 
     37 ContentViewRenderView::~ContentViewRenderView() {
     38 }
     39 
     40 // static
     41 jint Init(JNIEnv* env, jclass clazz) {
     42   ContentViewRenderView* content_view_render_view =
     43       new ContentViewRenderView();
     44   return reinterpret_cast<jint>(content_view_render_view);
     45 }
     46 
     47 void ContentViewRenderView::Destroy(JNIEnv* env, jobject obj) {
     48   delete this;
     49 }
     50 
     51 void ContentViewRenderView::SetCurrentContentView(
     52     JNIEnv* env, jobject obj, int native_content_view) {
     53   InitCompositor();
     54   ContentViewCoreImpl* content_view =
     55       reinterpret_cast<ContentViewCoreImpl*>(native_content_view);
     56   if (content_view)
     57     compositor_->SetRootLayer(content_view->GetLayer());
     58 }
     59 
     60 void ContentViewRenderView::SurfaceCreated(
     61     JNIEnv* env, jobject obj, jobject jsurface) {
     62   InitCompositor();
     63   compositor_->SetSurface(jsurface);
     64 }
     65 
     66 void ContentViewRenderView::SurfaceDestroyed(JNIEnv* env, jobject obj) {
     67   compositor_->SetSurface(NULL);
     68 }
     69 
     70 void ContentViewRenderView::SurfaceSetSize(
     71     JNIEnv* env, jobject obj, jint width, jint height) {
     72   compositor_->SetWindowBounds(gfx::Size(width, height));
     73 }
     74 
     75 void ContentViewRenderView::ScheduleComposite() {
     76   if (scheduled_composite_)
     77     return;
     78 
     79   scheduled_composite_ = true;
     80   base::MessageLoop::current()->PostTask(
     81       FROM_HERE,
     82       base::Bind(&ContentViewRenderView::Composite,
     83                  weak_factory_.GetWeakPtr()));
     84 }
     85 
     86 void ContentViewRenderView::InitCompositor() {
     87   if (!compositor_)
     88     compositor_.reset(Compositor::Create(this));
     89 }
     90 
     91 void ContentViewRenderView::Composite() {
     92   if (!compositor_)
     93     return;
     94 
     95   scheduled_composite_ = false;
     96   compositor_->Composite();
     97 }
     98 
     99 }  // namespace content
    100