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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/android/java_bitmap.h"
     20 #include "ui/gfx/size.h"
     21 
     22 #include <android/bitmap.h>
     23 #include <android/native_window_jni.h>
     24 
     25 using base::android::ScopedJavaLocalRef;
     26 
     27 namespace content {
     28 
     29 // static
     30 bool ContentViewRenderView::RegisterContentViewRenderView(JNIEnv* env) {
     31   return RegisterNativesImpl(env);
     32 }
     33 
     34 ContentViewRenderView::ContentViewRenderView(JNIEnv* env,
     35                                              jobject obj,
     36                                              gfx::NativeWindow root_window)
     37     : buffers_swapped_during_composite_(false),
     38       root_window_(root_window) {
     39   java_obj_.Reset(env, obj);
     40 }
     41 
     42 ContentViewRenderView::~ContentViewRenderView() {
     43 }
     44 
     45 // static
     46 static jlong Init(JNIEnv* env, jobject obj, jlong native_root_window) {
     47   gfx::NativeWindow root_window =
     48       reinterpret_cast<gfx::NativeWindow>(native_root_window);
     49   ContentViewRenderView* content_view_render_view =
     50       new ContentViewRenderView(env, obj, root_window);
     51   return reinterpret_cast<intptr_t>(content_view_render_view);
     52 }
     53 
     54 void ContentViewRenderView::Destroy(JNIEnv* env, jobject obj) {
     55   delete this;
     56 }
     57 
     58 void ContentViewRenderView::SetCurrentContentView(
     59     JNIEnv* env, jobject obj, int native_content_view) {
     60   InitCompositor();
     61   ContentViewCoreImpl* content_view =
     62       reinterpret_cast<ContentViewCoreImpl*>(native_content_view);
     63   if (content_view)
     64     compositor_->SetRootLayer(content_view->GetLayer());
     65   else
     66     compositor_->SetRootLayer(cc::Layer::Create());
     67 }
     68 
     69 void ContentViewRenderView::SurfaceCreated(
     70     JNIEnv* env, jobject obj, jobject jsurface) {
     71   InitCompositor();
     72   compositor_->SetSurface(jsurface);
     73 }
     74 
     75 void ContentViewRenderView::SurfaceDestroyed(JNIEnv* env, jobject obj) {
     76   compositor_->SetSurface(NULL);
     77 }
     78 
     79 void ContentViewRenderView::SurfaceSetSize(
     80     JNIEnv* env, jobject obj, jint width, jint height) {
     81   compositor_->SetWindowBounds(gfx::Size(width, height));
     82 }
     83 
     84 jboolean ContentViewRenderView::Composite(JNIEnv* env, jobject obj) {
     85   if (!compositor_)
     86     return false;
     87 
     88   buffers_swapped_during_composite_ = false;
     89   compositor_->Composite();
     90   return buffers_swapped_during_composite_;
     91 }
     92 
     93 jboolean ContentViewRenderView::CompositeToBitmap(JNIEnv* env, jobject obj,
     94                                                   jobject java_bitmap) {
     95   gfx::JavaBitmap bitmap(java_bitmap);
     96   if (!compositor_ || bitmap.format() != ANDROID_BITMAP_FORMAT_RGBA_8888)
     97     return false;
     98   return compositor_->CompositeAndReadback(bitmap.pixels(),
     99                                            gfx::Rect(bitmap.size()));
    100 }
    101 
    102 void ContentViewRenderView::ScheduleComposite() {
    103   JNIEnv* env = base::android::AttachCurrentThread();
    104   Java_ContentViewRenderView_requestRender(env, java_obj_.obj());
    105 }
    106 
    107 void ContentViewRenderView::OnSwapBuffersPosted() {
    108   buffers_swapped_during_composite_ = true;
    109 }
    110 
    111 void ContentViewRenderView::OnSwapBuffersCompleted() {
    112   JNIEnv* env = base::android::AttachCurrentThread();
    113   Java_ContentViewRenderView_onSwapBuffersCompleted(env, java_obj_.obj());
    114 }
    115 
    116 void ContentViewRenderView::InitCompositor() {
    117   if (!compositor_)
    118     compositor_.reset(Compositor::Create(this, root_window_));
    119 }
    120 
    121 }  // namespace content
    122