Mandoline: Support transforms and clipping of OOPIFs and events

components/mus/surfaces/top_level_display_client.cc

 // 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 "components/mus/surfaces/top_level_display_client.h"
 
 #include "cc/output/compositor_frame.h"
 #include "cc/surfaces/display.h"
+#include "cc/surfaces/surface.h"
 #include "components/mus/gles2/gpu_state.h"
 #include "components/mus/surfaces/surfaces_context_provider.h"
 #include "components/mus/surfaces/surfaces_output_surface.h"
 #include "components/mus/surfaces/surfaces_scheduler.h"
 #include "components/mus/surfaces/surfaces_state.h"
 
 namespace mus {
 namespace {
 void CallCallback(const base::Closure& callback, cc::SurfaceDrawStatus status) {
   callback.Run();
@@ skipping 20 matching lines @@
           new SurfacesContextProvider(this, widget, gpu_state))),
       null_display_scheduler);
 
   display_->Resize(last_submitted_frame_size_);
 
   // TODO(fsamuel): Plumb the proper device scale factor.
   display_->SetSurfaceId(cc_id_, 1.f /* device_scale_factor */);
 }
 
 TopLevelDisplayClient::~TopLevelDisplayClient() {
-  if (display_) {
-    factory_.Destroy(cc_id_);
-    surfaces_state_->scheduler()->RemoveDisplay(display_.get());
-    // By deleting the object after display_ is reset, OutputSurfaceLost can
-    // know not to do anything (which would result in double delete).
-    delete display_.release();
-  }
+  factory_.Destroy(cc_id_);
+  surfaces_state_->scheduler()->RemoveDisplay(display_.get());
+  // By deleting the object after display_ is reset, OutputSurfaceLost can
+  // know not to do anything (which would result in double delete).
+  delete display_.release();
 }
 
 void TopLevelDisplayClient::SubmitCompositorFrame(
     scoped_ptr<cc::CompositorFrame> frame,
     const base::Closure& callback) {
   pending_frame_ = frame.Pass();
 
   last_submitted_frame_size_ =
       pending_frame_->delegated_frame_data->render_pass_list.back()
           ->output_rect.size();
   display_->Resize(last_submitted_frame_size_);
   factory_.SubmitCompositorFrame(cc_id_, pending_frame_.Pass(),
                                  base::Bind(&CallCallback, callback));
   surfaces_state_->scheduler()->SetNeedsDraw();
 }
 
+const cc::CompositorFrame*
+TopLevelDisplayClient::GetLastCompositorFrame() const {
+  cc::Surface* surface = surfaces_state_->manager()->GetSurfaceForId(cc_id_);
+  if (!surface)
+    return nullptr;
+  return surface->GetEligibleFrame();
+}
+
 void TopLevelDisplayClient::CommitVSyncParameters(base::TimeTicks timebase,
                                                   base::TimeDelta interval) {}
 
 void TopLevelDisplayClient::OutputSurfaceLost() {
   if (!display_)  // Shutdown case
     return;
 
   // If our OutputSurface is lost we can't draw until we get a new one. For now,
   // destroy the display and create a new one when our ContextProvider provides
   // a new one.
@@ skipping 13 matching lines @@
       base::TimeTicks::FromInternalValue(timebase),
       base::TimeDelta::FromInternalValue(interval));
 }
 
 void TopLevelDisplayClient::ReturnResources(
     const cc::ReturnedResourceArray& resources) {
   // TODO(fsamuel): Implement this.
 }
 
 }  // namespace mus