Chromecast: extracts Linux window creation code to a common place.

chromecast/browser/cast_content_window.cc

+// Copyright 2014 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 "chromecast/browser/cast_content_window.h"
+
+#include "base/threading/thread_restrictions.h"
+#include "content/public/browser/web_contents.h"
+#include "ipc/ipc_message.h"
+
+#if defined(USE_AURA)
+#include "ui/aura/env.h"
+#include "ui/aura/layout_manager.h"
+#include "ui/aura/test/test_screen.h"
+#include "ui/aura/window.h"
+#include "ui/aura/window_tree_host.h"
+#endif
+
+namespace chromecast {
+
+#if defined(USE_AURA)
+class CastFillLayout : public aura::LayoutManager {
+ public:
+  explicit CastFillLayout(aura::Window* root) : root_(root) {}
+  virtual ~CastFillLayout() {}
+
+ private:
+  virtual void OnWindowResized() override {}
+
+  virtual void OnWindowAddedToLayout(aura::Window* child) override {
+    child->SetBounds(root_->bounds());
+  }
+
+  virtual void OnWillRemoveWindowFromLayout(aura::Window* child) override {}
+
+  virtual void OnWindowRemovedFromLayout(aura::Window* child) override {}
+
+  virtual void OnChildWindowVisibilityChanged(aura::Window* child,
+                                              bool visible) override {}
+
+  virtual void SetChildBounds(aura::Window* child,
+                              const gfx::Rect& requested_bounds) override {
+    SetChildBoundsDirect(child, requested_bounds);
+  }
+
+  aura::Window* root_;
+
+  DISALLOW_COPY_AND_ASSIGN(CastFillLayout);
+};
+#endif
+
+CastContentWindow::CastContentWindow() {}
+
+CastContentWindow::~CastContentWindow() {
+#if defined(USE_AURA)
+  window_tree_host_.reset();
+  gfx::Screen::SetScreenInstance(gfx::SCREEN_TYPE_NATIVE, NULL);
+#endif
+}
+
+scoped_ptr<content::WebContents> CastContentWindow::Create(
+    const gfx::Size& initial_size,
+    content::BrowserContext* browser_context) {
+#if defined(USE_AURA)
+  // Aura initialization
+  // TODO(lcwu): We only need a minimal implementation of gfx::screen
+  // and aura's TestScreen will do for us now. We should change to use
+  // ozone's screen implementation when it is ready.
+  aura::TestScreen* screen = aura::TestScreen::Create(initial_size);
+  gfx::Screen::SetScreenInstance(gfx::SCREEN_TYPE_NATIVE, screen);
+  CHECK(aura::Env::GetInstance());
+  window_tree_host_.reset(
+      aura::WindowTreeHost::Create(gfx::Rect(initial_size)));
+  window_tree_host_->InitHost();
+  window_tree_host_->window()->SetLayoutManager(
+      new CastFillLayout(window_tree_host_->window()));
+  window_tree_host_->Show();
+#endif
+
+  content::WebContents::CreateParams create_params(browser_context, NULL);
+  create_params.routing_id = MSG_ROUTING_NONE;
+  create_params.initial_size = initial_size;
+  content::WebContents* web_contents = content::WebContents::Create(
+      create_params);
+
+#if defined(USE_AURA)
+  // Add and show content's view/window
+  aura::Window* content_window = web_contents->GetNativeView();
+  aura::Window* parent = window_tree_host_->window();
+  if (!parent->Contains(content_window)) {
+    parent->AddChild(content_window);
+  }
+  content_window->Show();
+#endif
+
+  return make_scoped_ptr(web_contents);
+}
+
+}  // namespace chromecast