ContentShell rendering support on Android.

content/shell/android/shell_manager.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "content/shell/android/shell_manager.h"
 
 #include "base/android/jni_android.h"
 #include "base/android/jni_string.h"
 #include "base/android/scoped_java_ref.h"
+#include "base/bind.h"
 #include "base/lazy_instance.h"
 #include "content/shell/shell.h"
 #include "content/shell/shell_browser_context.h"
 #include "content/shell/shell_content_browser_client.h"
 #include "googleurl/src/gurl.h"
 #include "jni/ShellManager_jni.h"
+#include "content/public/browser/android/draw_delegate.h"
+#include "content/public/browser/render_widget_host_view.h"
+#include "content/public/browser/web_contents.h"
+#include "content/shell/android/draw_context.h"
+#include "content/shell/shell.h"
+#include "ui/gfx/size.h"
+
+#include <android/native_window_jni.h>
 
 using base::android::ScopedJavaLocalRef;
+using content::DrawContext;
+using content::DrawDelegate;
 
-base::LazyInstance<base::android::ScopedJavaGlobalRef<jobject> >
-    g_content_shell_manager = LAZY_INSTANCE_INITIALIZER;
+namespace {
+
+struct GlobalState {
+  GlobalState()
+      : context(NULL) {
+  }
+  base::android::ScopedJavaGlobalRef<jobject> j_obj;
+  DrawContext* context;
+};
+
+base::LazyInstance<GlobalState> g_global_state = LAZY_INSTANCE_INITIALIZER;
+
+static void SurfaceUpdated(
+    uint64 texture,
+    content::RenderWidgetHostView* view,
+    const DrawDelegate::SurfacePresentedCallback& callback) {
+  uint32 sync_point = g_global_state.Get().context->Draw(texture);
+  callback.Run(sync_point);
+}
+
+} // anonymous namespace
 
 namespace content {
 
 jobject CreateShellView() {
   JNIEnv* env = base::android::AttachCurrentThread();
   return Java_ShellManager_createShell(
-      env, g_content_shell_manager.Get().obj()).Release();
+      env, g_global_state.Get().j_obj.obj()).Release();
 }
 
 // Register native methods
 bool RegisterShellManager(JNIEnv* env) {
   return RegisterNativesImpl(env);
 }
 
 static void Init(JNIEnv* env, jclass clazz, jobject obj) {
-  g_content_shell_manager.Get().Reset(
+  g_global_state.Get().j_obj.Reset(
       base::android::ScopedJavaLocalRef<jobject>(env, obj));
+  DrawDelegate::SurfaceUpdatedCallback cb = base::Bind(
+      &SurfaceUpdated);
+  DrawDelegate::GetInstance()->SetUpdateCallback(cb);
+}
+
+static void SurfaceCreated(
+    JNIEnv* env, jclass clazz, jobject jsurface) {
+  ANativeWindow* native_window = ANativeWindow_fromSurface(env, jsurface);
+  if (native_window) {
+    if (g_global_state.Get().context)
+      delete g_global_state.Get().context;
+
+    g_global_state.Get().context = new DrawContext(native_window);
+    ANativeWindow_release(native_window);
+  }
+}
+
+static void SurfaceDestroyed(JNIEnv* env, jclass clazz) {
+  if (g_global_state.Get().context)
+    delete g_global_state.Get().context;
+  NOTIMPLEMENTED();

[Ted C, 2012/07/31 20:58:05]

this seems like a bit of a fib...maybe make this a TODO to have it do something
more useful?

[no sievers, 2012/07/31 21:17:17]

I'll remove the NOTIMPLEMENTED() here.
The problem is not really in this code, but somewhere else so we can let it
dcheck() or crash there. (The context already glFinishes() here before we return
and let the framework destroy the surface but it's the dependency from the other
compositor context mostly, I think.)

On 2012/07/31 20:58:05, Ted C wrote:

+}
+
+static void SurfaceSetSize(
+    JNIEnv* env, jclass clazz, jint width, jint height) {
+  gfx::Size size = gfx::Size(width, height);
+  DrawDelegate::GetInstance()->SetBounds(size);
+  DCHECK(g_global_state.Get().context);
+  g_global_state.Get().context->Reshape(width, height);
 }
 
 void LaunchShell(JNIEnv* env, jclass clazz, jstring jurl) {
   ShellBrowserContext* browserContext =
       static_cast<ShellContentBrowserClient*>(
           GetContentClient()->browser())->browser_context();
   GURL url(base::android::ConvertJavaStringToUTF8(env, jurl));
   Shell::CreateNewWindow(browserContext,
                          url,
                          NULL,
                          MSG_ROUTING_NONE,
                          NULL);
 }
 
 }  // namespace content