viewport_surface.cc revision 1320f92c476a1ad9d19dba2a48c72b75566198e9 
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/services/native_viewport/viewport_surface.h"
6
7#include "base/bind.h"
8#include "cc/surfaces/surface_id_allocator.h"
9#include "mojo/services/public/cpp/geometry/geometry_type_converters.h"
10#include "mojo/services/public/cpp/surfaces/surfaces_type_converters.h"
11#include "mojo/services/public/cpp/surfaces/surfaces_utils.h"
12#include "ui/gfx/transform.h"
13
14namespace mojo {
15
16ViewportSurface::ViewportSurface(SurfacesService* surfaces_service,
17                                 Gpu* gpu_service,
18                                 const gfx::Size& size,
19                                 cc::SurfaceId child_id)
20    : gpu_service_(gpu_service),
21      widget_id_(0u),
22      size_(size),
23      child_id_(child_id),
24      weak_factory_(this) {
25  surfaces_service->CreateSurfaceConnection(
26      base::Bind(&ViewportSurface::OnSurfaceConnectionCreated,
27                 weak_factory_.GetWeakPtr()));
28}
29
30ViewportSurface::~ViewportSurface() {
31}
32
33void ViewportSurface::SetWidgetId(uint64_t widget_id) {
34  widget_id_ = widget_id;
35  if (id_allocator_)
36    BindSurfaceToNativeViewport();
37}
38
39void ViewportSurface::SetSize(const gfx::Size& size) {
40  if (size_ == size)
41    return;
42
43  if (id_.is_null())
44    return;
45
46  surface_->DestroySurface(SurfaceId::From(id_));
47  if (widget_id_)
48    BindSurfaceToNativeViewport();
49}
50
51void ViewportSurface::SetChildId(cc::SurfaceId child_id) {
52  child_id_ = child_id;
53  SubmitFrame();
54}
55
56void ViewportSurface::OnSurfaceConnectionCreated(SurfacePtr surface,
57                                                 uint32_t id_namespace) {
58  surface_ = surface.Pass();
59  surface_.set_client(this);
60  id_allocator_.reset(new cc::SurfaceIdAllocator(id_namespace));
61  if (widget_id_ != 0u)
62    BindSurfaceToNativeViewport();
63}
64
65void ViewportSurface::BindSurfaceToNativeViewport() {
66  CommandBufferPtr cb;
67  gpu_service_->CreateOnscreenGLES2Context(
68      widget_id_, Size::From(size_), Get(&cb));
69
70  id_ = id_allocator_->GenerateId();
71  surface_->CreateGLES2BoundSurface(
72      cb.Pass(), SurfaceId::From(id_), Size::From(size_));
73
74  SubmitFrame();
75}
76
77void ViewportSurface::SubmitFrame() {
78  if (child_id_.is_null() || id_.is_null())
79    return;
80
81  SurfaceQuadStatePtr surface_quad_state = SurfaceQuadState::New();
82  surface_quad_state->surface = SurfaceId::From(child_id_);
83
84  gfx::Rect bounds(size_);
85
86  QuadPtr surface_quad = Quad::New();
87  surface_quad->material = Material::MATERIAL_SURFACE_CONTENT;
88  surface_quad->rect = Rect::From(bounds);
89  surface_quad->opaque_rect = Rect::From(bounds);
90  surface_quad->visible_rect = Rect::From(bounds);
91  surface_quad->needs_blending = true;
92  surface_quad->shared_quad_state_index = 0;
93  surface_quad->surface_quad_state = surface_quad_state.Pass();
94
95  PassPtr pass = CreateDefaultPass(1, bounds);
96
97  pass->quads.push_back(surface_quad.Pass());
98  pass->shared_quad_states.push_back(CreateDefaultSQS(size_));
99
100  FramePtr frame = Frame::New();
101  frame->passes.push_back(pass.Pass());
102  frame->resources.resize(0u);
103  surface_->SubmitFrame(SurfaceId::From(id_), frame.Pass());
104}
105
106void ViewportSurface::ReturnResources(Array<ReturnedResourcePtr> resources) {
107  // We never submit resources so we should never get any back.
108  DCHECK_EQ(0u, resources.size());
109}
110
111}  // namespace mojo
112