Upstream oodles of Chrome for Android code into Chromium.

chrome/browser/android/compositor/compositor_view.cc

Index: chrome/browser/android/compositor/compositor_view.cc
diff --git a/chrome/browser/android/compositor/compositor_view.cc b/chrome/browser/android/compositor/compositor_view.cc
new file mode 100644
index 0000000000000000000000000000000000000000..f09ac75cac5b00f5698e0004908d512e001b2b2a
--- /dev/null
+++ b/chrome/browser/android/compositor/compositor_view.cc
@@ -0,0 +1,308 @@
+// Copyright 2015 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 "chrome/browser/android/compositor/compositor_view.h"
+
+#include <vector>
+
+#include <android/bitmap.h>
+#include <android/native_window_jni.h>
+
+#include "base/android/build_info.h"
+#include "base/android/jni_android.h"
+#include "base/bind.h"
+#include "base/command_line.h"
+#include "base/id_map.h"
+#include "base/memory/scoped_ptr.h"
+#include "base/rand_util.h"
+#include "base/trace_event/trace_event.h"
+#include "cc/layers/layer.h"
+#include "cc/layers/layer_lists.h"
+#include "cc/layers/solid_color_layer.h"
+#include "cc/layers/texture_layer.h"
+#include "chrome/browser/android/compositor/layer/toolbar_layer.h"
+#include "chrome/browser/android/compositor/layer_title_cache.h"
+#include "chrome/browser/android/compositor/scene_layer/scene_layer.h"
+#include "chrome/browser/android/compositor/tab_content_manager.h"
+#include "content/public/browser/android/compositor.h"
+#include "content/public/browser/android/content_view_core.h"
+#include "content/public/browser/child_process_data.h"
+#include "content/public/browser/web_contents.h"
+#include "content/public/common/process_type.h"
+#include "jni/CompositorView_jni.h"
+#include "third_party/skia/include/core/SkBitmap.h"
+#include "ui/android/resources/resource_manager.h"
+#include "ui/android/resources/ui_resource_provider.h"
+#include "ui/android/window_android.h"
+#include "ui/gfx/android/java_bitmap.h"
+
+namespace chrome {
+namespace android {
+
+jlong Init(JNIEnv* env,
+           jobject obj,
+           jboolean low_mem_device,
+           jint empty_background_color,
+           jlong native_window_android,
+           jobject jlayer_title_cache,
+           jobject jtab_content_manager) {
+  CompositorView* view;
+  ui::WindowAndroid* window_android =
+      reinterpret_cast<ui::WindowAndroid*>(native_window_android);
+  LayerTitleCache* layer_title_cache =
+      LayerTitleCache::FromJavaObject(jlayer_title_cache);
+  TabContentManager* tab_content_manager =
+      TabContentManager::FromJavaObject(jtab_content_manager);
+
+  DCHECK(tab_content_manager);
+
+  // TODO(clholgat): Remove the compositor tabstrip flag.
+  view = new CompositorView(env, obj, empty_background_color, low_mem_device,
+                            window_android, layer_title_cache,
+                            tab_content_manager);
+
+  ui::UIResourceProvider* ui_resource_provider = view->GetUIResourceProvider();
+  // TODO(dtrainor): Pass the ResourceManager on the Java side to the tree
+  // builders instead.
+  if (layer_title_cache)
+    layer_title_cache->SetResourceManager(view->GetResourceManager());
+  if (tab_content_manager)
+    tab_content_manager->SetUIResourceProvider(ui_resource_provider);
+
+  return reinterpret_cast<intptr_t>(view);
+}
+
+CompositorView::CompositorView(JNIEnv* env,
+                               jobject obj,
+                               jint empty_background_color,
+                               jboolean low_mem_device,
+                               ui::WindowAndroid* window_android,
+                               LayerTitleCache* layer_title_cache,
+                               TabContentManager* tab_content_manager)
+    : layer_title_cache_(layer_title_cache),
+      tab_content_manager_(tab_content_manager),
+      root_layer_(cc::SolidColorLayer::Create()),
+      toolbar_layer_(ToolbarLayer::Create()),
+      scene_layer_(nullptr),
+      current_surface_format_(0),
+      content_width_(0),
+      content_height_(0),
+      overdraw_bottom_height_(0),
+      overlay_video_mode_(false),
+      empty_background_color_(empty_background_color),
+      weak_factory_(this) {
+  content::BrowserChildProcessObserver::Add(this);
+  obj_.Reset(env, obj);
+  compositor_.reset(content::Compositor::Create(this, window_android));
+
+  root_layer_->SetIsDrawable(true);
+  root_layer_->SetBackgroundColor(SK_ColorWHITE);
+
+  toolbar_layer_->layer()->SetHideLayerAndSubtree(true);
+  root_layer_->AddChild(toolbar_layer_->layer());
+}
+
+CompositorView::~CompositorView() {
+  content::BrowserChildProcessObserver::Remove(this);
+
+  // Explicitly reset these scoped_ptrs here because otherwise we callbacks will
+  // try to access member variables during destruction.
+  compositor_.reset(NULL);
+}
+
+void CompositorView::Destroy(JNIEnv* env, jobject object) {
+  delete this;
+}
+
+ui::ResourceManager* CompositorView::GetResourceManager() {
+  if (!compositor_)
+    return NULL;
+  return &compositor_->GetResourceManager();
+}
+
+base::android::ScopedJavaLocalRef<jobject> CompositorView::GetResourceManager(
+    JNIEnv* env,
+    jobject jobj) {
+  return compositor_->GetResourceManager().GetJavaObject();
+}
+
+void CompositorView::Layout() {
+  JNIEnv* env = base::android::AttachCurrentThread();
+  Java_CompositorView_onCompositorLayout(env, obj_.obj());
+}
+
+void CompositorView::OnSwapBuffersCompleted(int pending_swap_buffers) {
+  JNIEnv* env = base::android::AttachCurrentThread();
+  Java_CompositorView_onSwapBuffersCompleted(env, obj_.obj(),
+                                             pending_swap_buffers);
+}
+
+ui::UIResourceProvider* CompositorView::GetUIResourceProvider() {
+  if (!compositor_)
+    return NULL;
+  return &compositor_->GetUIResourceProvider();
+}
+
+void CompositorView::SurfaceCreated(JNIEnv* env, jobject object) {
+  compositor_->SetRootLayer(root_layer_);
+  current_surface_format_ = 0;
+}
+
+void CompositorView::SurfaceDestroyed(JNIEnv* env, jobject object) {
+  compositor_->SetSurface(NULL);
+  current_surface_format_ = 0;
+}
+
+void CompositorView::SurfaceChanged(JNIEnv* env,
+                                    jobject object,
+                                    jint format,
+                                    jint width,
+                                    jint height,
+                                    jobject surface) {
+  DCHECK(surface);
+  if (current_surface_format_ != format) {
+    current_surface_format_ = format;
+    compositor_->SetSurface(surface);
+  }
+  gfx::Size size = gfx::Size(width, height);
+  compositor_->SetWindowBounds(size);
+  content_width_ = size.width();
+  content_height_ = size.height();
+  root_layer_->SetBounds(gfx::Size(content_width_, content_height_));
+}
+
+void CompositorView::SetLayoutViewport(JNIEnv* env,
+                                       jobject object,
+                                       jfloat x,
+                                       jfloat y,
+                                       jfloat width,
+                                       jfloat height,
+                                       jfloat visible_x_offset,
+                                       jfloat visible_y_offset,
+                                       jfloat overdraw_bottom_height,
+                                       jfloat dp_to_pixel) {
+  overdraw_bottom_height_ = overdraw_bottom_height;
+  compositor_->setDeviceScaleFactor(dp_to_pixel);
+  root_layer_->SetBounds(gfx::Size(content_width_, content_height_));
+}
+
+void CompositorView::SetBackground(bool visible, SkColor color) {
+  if (overlay_video_mode_)
+    visible = false;
+  root_layer_->SetBackgroundColor(color);
+  root_layer_->SetIsDrawable(visible);
+}
+
+void CompositorView::SetOverlayVideoMode(JNIEnv* env,
+                                         jobject object,
+                                         bool enabled) {
+  if (overlay_video_mode_ == enabled)
+    return;
+  overlay_video_mode_ = enabled;
+  compositor_->SetHasTransparentBackground(enabled);
+  SetNeedsComposite(env, object);
+}
+
+void CompositorView::SetSceneLayer(JNIEnv* env,
+                                   jobject object,
+                                   jobject jscene_layer) {
+  SceneLayer* scene_layer = SceneLayer::FromJavaObject(env, jscene_layer);
+
+  if (scene_layer_ != scene_layer) {
+    // Old tree provider is being detached.
+    if (scene_layer_ != nullptr)
+      scene_layer_->OnDetach();
+
+    scene_layer_ = scene_layer;
+
+    if (scene_layer == nullptr) {
+      scene_layer_layer_ = nullptr;
+      return;
+    }
+
+    scene_layer_layer_ = scene_layer->layer();
+    root_layer_->InsertChild(scene_layer->layer(), 0);
+  }
+
+  if (scene_layer) {
+    SetBackground(scene_layer->ShouldShowBackground(),
+                  scene_layer->GetBackgroundColor());
+  } else {
+#ifndef NDEBUG
+    // This should not happen. Setting red background just for debugging.
+    SetBackground(true, SK_ColorRED);
+#else
+    SetBackground(true, SK_ColorBLACK);
+#endif
+  }
+}
+
+int CompositorView::GetUsableContentHeight() {
+  return std::max(content_height_ - overdraw_bottom_height_, 0);
+}
+
+void CompositorView::UpdateToolbarLayer(JNIEnv* env,
+                                        jobject object,
+                                        jint toolbar_resource_id,
+                                        jint progress_resource_id,
+                                        jfloat top_offset,
+                                        bool visible) {
+  // Ensure the toolbar resource is available before making the layer visible.
+  ui::ResourceManager::Resource* resource =
+      compositor_->GetResourceManager().GetResource(
+          ui::ANDROID_RESOURCE_TYPE_DYNAMIC, toolbar_resource_id);
+  if (!resource)
+    visible = false;
+
+  toolbar_layer_->layer()->SetHideLayerAndSubtree(!visible);
+  if (visible) {
+    toolbar_layer_->layer()->SetPosition(gfx::PointF(0, top_offset));
+
+    ui::ResourceManager::Resource* progress_resource =
+        compositor_->GetResourceManager().GetResource(
+            ui::ANDROID_RESOURCE_TYPE_DYNAMIC, progress_resource_id);
+    toolbar_layer_->PushResource(resource, progress_resource, false, false,
+                                 false);
+
+    // If we're at rest, hide the shadow.  The Android view should be drawing.
+    toolbar_layer_->layer()->SetMasksToBounds(top_offset >= 0.f);
+  }
+}
+
+void CompositorView::FinalizeLayers(JNIEnv* env, jobject jobj) {
+  UNSHIPPED_TRACE_EVENT0("compositor", "CompositorView::FinalizeLayers");
+}
+
+void CompositorView::SetNeedsComposite(JNIEnv* env, jobject object) {
+  compositor_->SetNeedsComposite();
+}
+
+void CompositorView::BrowserChildProcessHostDisconnected(
+    const content::ChildProcessData& data) {
+  LOG(WARNING) << "Child process disconnected (type=" << data.process_type
+               << ") pid=" << data.handle << ")";
+  if (base::android::BuildInfo::GetInstance()->sdk_int() <=
+          base::android::SDK_VERSION_JELLY_BEAN_MR2 &&
+      data.process_type == content::PROCESS_TYPE_GPU) {
+    JNIEnv* env = base::android::AttachCurrentThread();
+    compositor_->SetSurface(nullptr);
+    Java_CompositorView_onJellyBeanSurfaceDisconnectWorkaround(
+        env, obj_.obj(), overlay_video_mode_);
+  }
+}
+
+void CompositorView::BrowserChildProcessCrashed(
+    const content::ChildProcessData& data,
+    int exit_code) {
+  // The Android TERMINATION_STATUS_OOM_PROTECTED hack causes us to never go
+  // through here but through BrowserChildProcessHostDisconnected() instead.
+}
+
+// Register native methods
+bool RegisterCompositorView(JNIEnv* env) {
+  return RegisterNativesImpl(env);
+}
+
+}  // namespace android
+}  // namespace chrome