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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 "mojo/examples/surfaces_app/child_impl.h"
      6 
      7 #include "base/bind.h"
      8 #include "cc/output/compositor_frame.h"
      9 #include "cc/output/delegated_frame_data.h"
     10 #include "cc/quads/render_pass.h"
     11 #include "cc/quads/solid_color_draw_quad.h"
     12 #include "mojo/examples/surfaces_app/surfaces_util.h"
     13 #include "mojo/public/cpp/application/application_connection.h"
     14 #include "mojo/services/public/cpp/geometry/geometry_type_converters.h"
     15 #include "mojo/services/public/cpp/surfaces/surfaces_type_converters.h"
     16 #include "mojo/services/public/interfaces/surfaces/surface_id.mojom.h"
     17 #include "mojo/services/public/interfaces/surfaces/surfaces.mojom.h"
     18 #include "ui/gfx/rect.h"
     19 #include "ui/gfx/transform.h"
     20 
     21 namespace mojo {
     22 namespace examples {
     23 
     24 using cc::RenderPass;
     25 using cc::RenderPassId;
     26 using cc::DrawQuad;
     27 using cc::SolidColorDrawQuad;
     28 using cc::DelegatedFrameData;
     29 using cc::CompositorFrame;
     30 
     31 ChildImpl::ChildImpl(ApplicationConnection* surfaces_service_connection)
     32     : weak_factory_(this) {
     33   surfaces_service_connection->ConnectToService(&surfaces_service_);
     34   surfaces_service_->CreateSurfaceConnection(base::Bind(
     35       &ChildImpl::SurfaceConnectionCreated, weak_factory_.GetWeakPtr()));
     36 }
     37 
     38 ChildImpl::~ChildImpl() {
     39   if (surface_)
     40     surface_->DestroySurface(mojo::SurfaceId::From(id_));
     41 }
     42 
     43 void ChildImpl::ProduceFrame(
     44     ColorPtr color,
     45     SizePtr size,
     46     const mojo::Callback<void(SurfaceIdPtr id)>& callback) {
     47   color_ = color.To<SkColor>();
     48   size_ = size.To<gfx::Size>();
     49   produce_callback_ = callback;
     50   if (allocator_)
     51     Draw();
     52 }
     53 
     54 void ChildImpl::SurfaceConnectionCreated(SurfacePtr surface,
     55                                          uint32_t id_namespace) {
     56   surface_ = surface.Pass();
     57   surface_.set_client(this);
     58   allocator_.reset(new cc::SurfaceIdAllocator(id_namespace));
     59   if (!produce_callback_.is_null())
     60     Draw();
     61 }
     62 
     63 void ChildImpl::ReturnResources(
     64     Array<ReturnedResourcePtr> resources) {
     65   DCHECK(!resources.size());
     66 }
     67 
     68 void ChildImpl::Draw() {
     69   id_ = allocator_->GenerateId();
     70   surface_->CreateSurface(mojo::SurfaceId::From(id_),
     71                           mojo::Size::From(size_));
     72   gfx::Rect rect(size_);
     73   RenderPassId id(1, 1);
     74   scoped_ptr<RenderPass> pass = RenderPass::Create();
     75   pass->SetNew(id, rect, rect, gfx::Transform());
     76 
     77   CreateAndAppendSimpleSharedQuadState(pass.get(), gfx::Transform(), size_);
     78 
     79   SolidColorDrawQuad* color_quad =
     80       pass->CreateAndAppendDrawQuad<SolidColorDrawQuad>();
     81   bool force_anti_aliasing_off = false;
     82   color_quad->SetNew(pass->shared_quad_state_list.back(),
     83                      rect,
     84                      rect,
     85                      color_,
     86                      force_anti_aliasing_off);
     87 
     88   scoped_ptr<DelegatedFrameData> delegated_frame_data(new DelegatedFrameData);
     89   delegated_frame_data->render_pass_list.push_back(pass.Pass());
     90 
     91   scoped_ptr<CompositorFrame> frame(new CompositorFrame);
     92   frame->delegated_frame_data = delegated_frame_data.Pass();
     93 
     94   surface_->SubmitFrame(mojo::SurfaceId::From(id_),
     95                         mojo::Frame::From(*frame));
     96   produce_callback_.Run(SurfaceId::From(id_));
     97 }
     98 
     99 }  // namespace examples
    100 }  // namespace mojo
    101