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      1 // Copyright 2014 The Chromium Authors. All rights reserved.
      2 // Use of this source code is governed by a BSD-style license that can be
      3 // found in the LICENSE file.
      4 
      5 #include "base/bind.h"
      6 #include "base/macros.h"
      7 #include "base/message_loop/message_loop.h"
      8 #include "cc/surfaces/surface_id_allocator.h"
      9 #include "mojo/application/application_runner_chromium.h"
     10 #include "mojo/examples/surfaces_app/child.mojom.h"
     11 #include "mojo/examples/surfaces_app/embedder.h"
     12 #include "mojo/public/c/system/main.h"
     13 #include "mojo/public/cpp/application/application_connection.h"
     14 #include "mojo/public/cpp/application/application_delegate.h"
     15 #include "mojo/public/cpp/system/core.h"
     16 #include "mojo/services/gles2/command_buffer.mojom.h"
     17 #include "mojo/services/public/cpp/geometry/geometry_type_converters.h"
     18 #include "mojo/services/public/cpp/surfaces/surfaces_type_converters.h"
     19 #include "mojo/services/public/interfaces/gpu/gpu.mojom.h"
     20 #include "mojo/services/public/interfaces/native_viewport/native_viewport.mojom.h"
     21 #include "mojo/services/public/interfaces/surfaces/surfaces.mojom.h"
     22 #include "mojo/services/public/interfaces/surfaces/surfaces_service.mojom.h"
     23 #include "ui/gfx/rect.h"
     24 
     25 namespace mojo {
     26 namespace examples {
     27 
     28 class SurfacesApp : public ApplicationDelegate,
     29                     public SurfaceClient,
     30                     public NativeViewportClient {
     31  public:
     32   SurfacesApp() {}
     33   virtual ~SurfacesApp() {}
     34 
     35   // ApplicationDelegate implementation
     36   virtual bool ConfigureIncomingConnection(
     37       ApplicationConnection* connection) OVERRIDE {
     38     connection->ConnectToService("mojo:mojo_native_viewport_service",
     39                                  &viewport_);
     40     viewport_.set_client(this);
     41 
     42     connection->ConnectToService("mojo:mojo_surfaces_service",
     43                                  &surfaces_service_);
     44     surfaces_service_->CreateSurfaceConnection(base::Bind(
     45         &SurfacesApp::SurfaceConnectionCreated, base::Unretained(this)));
     46 
     47     size_ = gfx::Size(800, 600);
     48 
     49     viewport_->Create(Size::From(size_));
     50     viewport_->Show();
     51 
     52     child_size_ = gfx::Size(size_.width() / 3, size_.height() / 2);
     53     connection->ConnectToService("mojo:mojo_surfaces_child_app", &child_one_);
     54     connection->ConnectToService("mojo:mojo_surfaces_child_gl_app",
     55                                  &child_two_);
     56     child_one_->ProduceFrame(Color::From(SK_ColorBLUE),
     57                              Size::From(child_size_),
     58                              base::Bind(&SurfacesApp::ChildOneProducedFrame,
     59                                         base::Unretained(this)));
     60     child_two_->ProduceFrame(Color::From(SK_ColorGREEN),
     61                              Size::From(child_size_),
     62                              base::Bind(&SurfacesApp::ChildTwoProducedFrame,
     63                                         base::Unretained(this)));
     64     return true;
     65   }
     66 
     67   void ChildOneProducedFrame(SurfaceIdPtr id) {
     68     child_one_id_ = id.To<cc::SurfaceId>();
     69   }
     70 
     71   void ChildTwoProducedFrame(SurfaceIdPtr id) {
     72     child_two_id_ = id.To<cc::SurfaceId>();
     73   }
     74 
     75   void Draw(int offset) {
     76     int bounced_offset = offset;
     77     if (offset > 200)
     78       bounced_offset = 400 - offset;
     79     embedder_->ProduceFrame(
     80         child_one_id_, child_two_id_, child_size_, size_, bounced_offset);
     81     base::MessageLoop::current()->PostDelayedTask(
     82         FROM_HERE,
     83         base::Bind(
     84             &SurfacesApp::Draw, base::Unretained(this), (offset + 2) % 400),
     85         base::TimeDelta::FromMilliseconds(50));
     86   }
     87 
     88   void SurfaceConnectionCreated(SurfacePtr surface, uint32_t id_namespace) {
     89     surface_ = surface.Pass();
     90     surface_.set_client(this);
     91     embedder_.reset(new Embedder(surface_.get()));
     92     allocator_.reset(new cc::SurfaceIdAllocator(id_namespace));
     93 
     94     onscreen_id_ = allocator_->GenerateId();
     95     embedder_->SetSurfaceId(onscreen_id_);
     96     surface_->CreateSurface(SurfaceId::From(onscreen_id_), Size::From(size_));
     97     viewport_->SubmittedFrame(SurfaceId::From(onscreen_id_));
     98     Draw(10);
     99   }
    100 
    101   // SurfaceClient implementation.
    102   virtual void ReturnResources(Array<ReturnedResourcePtr> resources) OVERRIDE {
    103     DCHECK(!resources.size());
    104   }
    105   // NativeViewportClient implementation.
    106   virtual void OnCreated(uint64_t native_viewport_id) OVERRIDE {}
    107   virtual void OnBoundsChanged(mojo::SizePtr bounds) OVERRIDE {}
    108   virtual void OnDestroyed() OVERRIDE {}
    109   virtual void OnEvent(mojo::EventPtr event,
    110                        const mojo::Callback<void()>& callback) OVERRIDE {
    111     callback.Run();
    112   }
    113 
    114  private:
    115   SurfacesServicePtr surfaces_service_;
    116   SurfacePtr surface_;
    117   cc::SurfaceId onscreen_id_;
    118   scoped_ptr<cc::SurfaceIdAllocator> allocator_;
    119   scoped_ptr<Embedder> embedder_;
    120   ChildPtr child_one_;
    121   cc::SurfaceId child_one_id_;
    122   ChildPtr child_two_;
    123   cc::SurfaceId child_two_id_;
    124   gfx::Size size_;
    125   gfx::Size child_size_;
    126 
    127   NativeViewportPtr viewport_;
    128 
    129   DISALLOW_COPY_AND_ASSIGN(SurfacesApp);
    130 };
    131 
    132 }  // namespace examples
    133 }  // namespace mojo
    134 
    135 MojoResult MojoMain(MojoHandle shell_handle) {
    136   mojo::ApplicationRunnerChromium runner(new mojo::examples::SurfacesApp);
    137   return runner.Run(shell_handle);
    138 }
    139