native_viewport_impl.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/native_viewport_impl.h"
6
7#include "base/bind.h"
8#include "base/macros.h"
9#include "base/message_loop/message_loop.h"
10#include "base/time/time.h"
11#include "mojo/public/cpp/application/application_delegate.h"
12#include "mojo/public/cpp/application/application_impl.h"
13#include "mojo/public/cpp/application/interface_factory.h"
14#include "mojo/services/native_viewport/platform_viewport_headless.h"
15#include "mojo/services/native_viewport/viewport_surface.h"
16#include "mojo/services/public/cpp/geometry/geometry_type_converters.h"
17#include "mojo/services/public/cpp/input_events/input_events_type_converters.h"
18#include "mojo/services/public/cpp/surfaces/surfaces_type_converters.h"
19#include "ui/events/event.h"
20
21namespace mojo {
22namespace {
23
24bool IsRateLimitedEventType(ui::Event* event) {
25  return event->type() == ui::ET_MOUSE_MOVED ||
26         event->type() == ui::ET_MOUSE_DRAGGED ||
27         event->type() == ui::ET_TOUCH_MOVED;
28}
29
30}  // namespace
31
32NativeViewportImpl::NativeViewportImpl(ApplicationImpl* app, bool is_headless)
33    : is_headless_(is_headless),
34      widget_id_(0u),
35      waiting_for_event_ack_(false),
36      weak_factory_(this) {
37  app->ConnectToService("mojo:mojo_surfaces_service", &surfaces_service_);
38  // TODO(jamesr): Should be mojo_gpu_service
39  app->ConnectToService("mojo:mojo_native_viewport_service", &gpu_service_);
40}
41
42NativeViewportImpl::~NativeViewportImpl() {
43  // Destroy the NativeViewport early on as it may call us back during
44  // destruction and we want to be in a known state.
45  platform_viewport_.reset();
46}
47
48void NativeViewportImpl::Create(SizePtr bounds) {
49  if (is_headless_)
50    platform_viewport_ = PlatformViewportHeadless::Create(this);
51  else
52    platform_viewport_ = PlatformViewport::Create(this);
53  gfx::Rect rect = gfx::Rect(bounds.To<gfx::Size>());
54  platform_viewport_->Init(rect);
55  OnBoundsChanged(rect);
56}
57
58void NativeViewportImpl::Show() {
59  platform_viewport_->Show();
60}
61
62void NativeViewportImpl::Hide() {
63  platform_viewport_->Hide();
64}
65
66void NativeViewportImpl::Close() {
67  DCHECK(platform_viewport_);
68  platform_viewport_->Close();
69}
70
71void NativeViewportImpl::SetBounds(SizePtr bounds) {
72  platform_viewport_->SetBounds(gfx::Rect(bounds.To<gfx::Size>()));
73}
74
75void NativeViewportImpl::SubmittedFrame(SurfaceIdPtr child_surface_id) {
76  if (child_surface_id_.is_null()) {
77    // If this is the first indication that the client will use surfaces,
78    // initialize that system.
79    // TODO(jamesr): When everything is converted to surfaces initialize this
80    // eagerly.
81    viewport_surface_.reset(
82        new ViewportSurface(surfaces_service_.get(),
83                            gpu_service_.get(),
84                            bounds_.size(),
85                            child_surface_id.To<cc::SurfaceId>()));
86    if (widget_id_)
87      viewport_surface_->SetWidgetId(widget_id_);
88  }
89  child_surface_id_ = child_surface_id.To<cc::SurfaceId>();
90  if (viewport_surface_)
91    viewport_surface_->SetChildId(child_surface_id_);
92}
93
94void NativeViewportImpl::OnBoundsChanged(const gfx::Rect& bounds) {
95  bounds_ = bounds;
96  client()->OnBoundsChanged(Size::From(bounds.size()));
97  if (viewport_surface_)
98    viewport_surface_->SetSize(bounds.size());
99}
100
101void NativeViewportImpl::OnAcceleratedWidgetAvailable(
102    gfx::AcceleratedWidget widget) {
103  widget_id_ = static_cast<uint64_t>(bit_cast<uintptr_t>(widget));
104  // TODO(jamesr): Remove once everything is converted to surfaces.
105  client()->OnCreated(widget_id_);
106  if (viewport_surface_)
107    viewport_surface_->SetWidgetId(widget_id_);
108}
109
110bool NativeViewportImpl::OnEvent(ui::Event* ui_event) {
111  // Must not return early before updating capture.
112  switch (ui_event->type()) {
113    case ui::ET_MOUSE_PRESSED:
114    case ui::ET_TOUCH_PRESSED:
115      platform_viewport_->SetCapture();
116      break;
117    case ui::ET_MOUSE_RELEASED:
118    case ui::ET_TOUCH_RELEASED:
119      platform_viewport_->ReleaseCapture();
120      break;
121    default:
122      break;
123  }
124
125  if (waiting_for_event_ack_ && IsRateLimitedEventType(ui_event))
126    return false;
127
128  client()->OnEvent(
129      Event::From(*ui_event),
130      base::Bind(&NativeViewportImpl::AckEvent, weak_factory_.GetWeakPtr()));
131  waiting_for_event_ack_ = true;
132  return false;
133}
134
135void NativeViewportImpl::OnDestroyed() {
136  client()->OnDestroyed();
137}
138
139void NativeViewportImpl::AckEvent() {
140  waiting_for_event_ack_ = false;
141}
142
143}  // namespace mojo
144
145