Merge branch 'master' of https://github.com/brenca/electron

Conflicts:
	atom/browser/api/atom_api_window.h
	atom/browser/native_window.cc

atom/browser/api/atom_api_window.cc

@@ -442,6 +442,10 @@ void Window::CapturePage(mate::Arguments* args) {
       rect, base::Bind(&OnCapturePageDone, args->isolate(), callback));
 }
 
+void Window::SetOffscreenRender(bool isOffscreen) {
+  window_->SetOffscreenRender(isOffscreen);
+}
+
 void Window::SetProgressBar(double progress) {
   window_->SetProgressBar(progress);
 }
@@ -741,6 +745,7 @@ void Window::BuildPrototype(v8::Isolate* isolate,
                  &Window::IsVisibleOnAllWorkspaces)
       .SetMethod("sendMouseEvent", &Window::SendMouseEvent)
       .SetMethod("sendKeyboardEvent", &Window::SendKeyboardEvent)
+      .SetMethod("setOffscreenRender", &Window::SetOffscreenRender)
 #if defined(OS_MACOSX)
       .SetMethod("showDefinitionForSelection",
                  &Window::ShowDefinitionForSelection)

atom/browser/api/atom_api_window.h

@@ -138,8 +138,10 @@ class Window : public mate::TrackableObject<Window>,
   void SetMenuBarVisibility(bool visible);
   bool IsMenuBarVisible();
   void SetAspectRatio(double aspect_ratio, mate::Arguments* args);
+
   void SendKeyboardEvent(v8::Isolate* isolate, const mate::Dictionary& data);
   void SendMouseEvent(v8::Isolate* isolate, const mate::Dictionary& data);
+  void SetOffscreenRender(bool isOffscreen);
 
 #if defined(OS_MACOSX)
   void ShowDefinitionForSelection();

atom/browser/native_window.cc

@@ -332,6 +332,29 @@ void NativeWindow::CapturePage(const gfx::Rect& rect,
       kBGRA_8888_SkColorType);
 }
 
+void NativeWindow::SetOffscreenRender(bool isOffscreen) {
+  if (!isOffscreen && !offscreen_) return;
+
+  const auto view = web_contents()->GetRenderWidgetHostView();
+
+  if (view) {
+    if (isOffscreen) {
+      scoped_ptr<content::RenderWidgetHostViewFrameSubscriber> subscriber(
+        new RenderSubscriber(
+          view->GetVisibleViewportSize(),
+          base::Bind(&NativeWindow::OnFrameReceived, base::Unretained(this))
+        )
+      );
+
+      view->BeginFrameSubscription(subscriber.Pass());
+    } else {
+      view->EndFrameSubscription();
+    }
+
+    offscreen_ = isOffscreen;
+  }
+}
+
 void NativeWindow::RequestToClosePage() {
   bool prevent_default = false;
   FOR_EACH_OBSERVER(NativeWindowObserver,
@@ -608,16 +631,7 @@ void NativeWindow::SendMouseWheelEvent(int modifiers, int x, int y, bool precise
 }
 
 void NativeWindow::DidFinishLoad(content::RenderFrameHost* render_frame_host, const GURL& validated_url) {
-  const auto view = web_contents()->GetRenderWidgetHostView();
-  const auto host = view ? view->GetRenderWidgetHost() : nullptr;
-
-  if(offscreen_){
-    scoped_ptr<content::RenderWidgetHostViewFrameSubscriber> subscriber(new RenderSubscriber(
-      view->GetVisibleViewportSize(), base::Bind(&NativeWindow::OnFrameReceived, base::Unretained(this))
-    ));
-
-    view->BeginFrameSubscription(subscriber.Pass());
-  }
+  SetOffscreenRender(offscreen_);
 }
 
 void NativeWindow::RenderViewCreated(
@@ -697,7 +711,8 @@ void NativeWindow::OnCapturePageDone(const CapturePageCallback& callback,
   callback.Run(bitmap);
 }
 
-void NativeWindow::OnFrameReceived(bool result, scoped_refptr<media::VideoFrame> frame) {
+void NativeWindow::OnFrameReceived(bool result,
+                                   scoped_refptr<media::VideoFrame> frame) {
   if (result) {
     gfx::Rect rect = frame->visible_rect();
 
@@ -721,7 +736,8 @@ void NativeWindow::OnFrameReceived(bool result, scoped_refptr<media::VideoFrame>
   }
 }
 
-bool RenderSubscriber::ShouldCaptureFrame(const gfx::Rect& damage_rect,
+bool RenderSubscriber::ShouldCaptureFrame(
+                        const gfx::Rect& damage_rect,
                         base::TimeTicks present_time,
                         scoped_refptr<media::VideoFrame>* storage,
                         DeliverFrameCallback* callback) {

atom/browser/native_window.h

@@ -242,6 +242,8 @@ class NativeWindow : public content::WebContentsObserver,
   void SendMouseEvent(blink::WebInputEvent::Type type, int modifiers, blink::WebMouseEvent::Button button, int x, int y, int movementX, int movementY, int clickCount);
   void SendMouseWheelEvent(int modifiers, int x, int y, bool clickCount);
 
+  void SetOffscreenRender(bool isOffscreen);
+
  protected:
   NativeWindow(brightray::InspectableWebContents* inspectable_web_contents,
                const mate::Dictionary& options);
@@ -253,7 +255,6 @@ class NativeWindow : public content::WebContentsObserver,
 
   // content::WebContentsObserver:
   void RenderViewCreated(content::RenderViewHost* render_view_host) override;
-  void RenderViewReady() override;
   void DidFinishLoad(content::RenderFrameHost* render_frame_host, const GURL& validated_url) override;
   void BeforeUnloadDialogCancelled() override;
   void TitleWasSet(content::NavigationEntry* entry, bool explicit_set) override;

docs/api/browser-window.md

@@ -74,6 +74,8 @@ You can also create a window without chrome by using
     Linux.
   * `standard-window` Boolean - Uses the OS X's standard window instead of the
     textured window. Defaults to `true`.
+  * `offscreen-render` Boolean - The frame of the window will be accessible
+    through the `frame-rendered` event in a buffer. Defaults to `false`.
   * `web-preferences` Object - Settings of web page's features
     * `javascript` Boolean
     * `web-security` Boolean - When setting `false`, it will disable the same-origin
@@ -226,6 +228,15 @@ Emitted when devtools is closed.
 
 Emitted when devtools is focused / opened.
 
+### Event: 'frame-rendered'
+
+* `event` Event
+* `frame` Buffer
+* `size` Number
+
+Emitted when *offscreen render* is enabled, the current frame's pixel data
+and size are available.
+
 ### Event: 'app-command':
 
 Emitted when an [App Command](https://msdn.microsoft.com/en-us/library/windows/desktop/ms646275(v=vs.85).aspx) is invoked. These are typically related to keyboard media keys or browser commands, as well as the "Back" button built into some mice on Windows.
@@ -721,6 +732,11 @@ Returns whether the window is visible on all workspaces.
 
 **Note:** This API always returns false on Windows.
 
+### BrowserWindow.setOffscreenRender(isOffscreen)
+
+Sets the offscreen rendering, if `true` the `frame-rendered` event will fire,
+when the frame changes.
+
 ## Class: WebContents
 
 A `WebContents` is responsible for rendering and controlling a web page.