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// Copyright 2013 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 "mojo/services/native_viewport/native_viewport_service.h"
#include "base/macros.h"
#include "base/message_loop/message_loop.h"
#include "base/time/time.h"
#include "mojo/public/bindings/allocation_scope.h"
#include "mojo/public/shell/shell.mojom.h"
#include "mojo/services/gles2/command_buffer_impl.h"
#include "mojo/services/native_viewport/geometry_conversions.h"
#include "mojo/services/native_viewport/native_viewport.h"
#include "mojo/services/native_viewport/native_viewport.mojom.h"
#include "ui/events/event.h"
namespace mojo {
namespace services {
namespace {
bool IsRateLimitedEventType(ui::Event* event) {
return event->type() == ui::ET_MOUSE_MOVED ||
event->type() == ui::ET_MOUSE_DRAGGED ||
event->type() == ui::ET_TOUCH_MOVED;
}
}
class NativeViewportImpl
: public Service<mojo::NativeViewport, NativeViewportImpl, shell::Context>,
public NativeViewportDelegate {
public:
NativeViewportImpl()
: widget_(gfx::kNullAcceleratedWidget),
waiting_for_event_ack_(false),
pending_event_timestamp_(0) {}
virtual ~NativeViewportImpl() {}
virtual void Create(const Rect& bounds) OVERRIDE {
native_viewport_ =
services::NativeViewport::Create(context(), this);
native_viewport_->Init(bounds);
client()->OnCreated();
OnBoundsChanged(bounds);
}
virtual void Show() OVERRIDE {
native_viewport_->Show();
}
virtual void Hide() OVERRIDE {
native_viewport_->Hide();
}
virtual void Close() OVERRIDE {
command_buffer_.reset();
DCHECK(native_viewport_);
native_viewport_->Close();
}
virtual void SetBounds(const Rect& bounds) OVERRIDE {
gfx::Rect gfx_bounds(bounds.position().x(), bounds.position().y(),
bounds.size().width(), bounds.size().height());
native_viewport_->SetBounds(gfx_bounds);
}
virtual void CreateGLES2Context(ScopedMessagePipeHandle client_handle)
OVERRIDE {
if (command_buffer_ || command_buffer_handle_.is_valid()) {
LOG(ERROR) << "Can't create multiple contexts on a NativeViewport";
return;
}
// TODO(darin):
// CreateGLES2Context should accept a ScopedCommandBufferClientHandle once
// it is possible to import interface definitions from another module. For
// now, we just kludge it.
command_buffer_handle_.reset(
InterfaceHandle<CommandBufferClient>(client_handle.release().value()));
CreateCommandBufferIfNeeded();
}
virtual void AckEvent(const Event& event) OVERRIDE {
DCHECK_EQ(event.time_stamp(), pending_event_timestamp_);
waiting_for_event_ack_ = false;
}
void CreateCommandBufferIfNeeded() {
if (!command_buffer_handle_.is_valid())
return;
DCHECK(!command_buffer_.get());
if (widget_ == gfx::kNullAcceleratedWidget)
return;
gfx::Size size = native_viewport_->GetSize();
if (size.IsEmpty())
return;
command_buffer_.reset(new CommandBufferImpl(
command_buffer_handle_.Pass(), widget_, native_viewport_->GetSize()));
}
virtual bool OnEvent(ui::Event* ui_event) OVERRIDE {
// Must not return early before updating capture.
switch (ui_event->type()) {
case ui::ET_MOUSE_PRESSED:
case ui::ET_TOUCH_PRESSED:
native_viewport_->SetCapture();
break;
case ui::ET_MOUSE_RELEASED:
case ui::ET_TOUCH_RELEASED:
native_viewport_->ReleaseCapture();
break;
default:
break;
}
if (waiting_for_event_ack_ && IsRateLimitedEventType(ui_event))
return false;
pending_event_timestamp_ = ui_event->time_stamp().ToInternalValue();
AllocationScope scope;
Event::Builder event;
event.set_action(ui_event->type());
event.set_flags(ui_event->flags());
event.set_time_stamp(pending_event_timestamp_);
if (ui_event->IsMouseEvent() || ui_event->IsTouchEvent()) {
ui::LocatedEvent* located_event =
static_cast<ui::LocatedEvent*>(ui_event);
Point::Builder location;
location.set_x(located_event->location().x());
location.set_y(located_event->location().y());
event.set_location(location.Finish());
}
if (ui_event->IsTouchEvent()) {
ui::TouchEvent* touch_event = static_cast<ui::TouchEvent*>(ui_event);
TouchData::Builder touch_data;
touch_data.set_pointer_id(touch_event->touch_id());
event.set_touch_data(touch_data.Finish());
} else if (ui_event->IsKeyEvent()) {
ui::KeyEvent* key_event = static_cast<ui::KeyEvent*>(ui_event);
KeyData::Builder key_data;
key_data.set_key_code(key_event->key_code());
key_data.set_is_char(key_event->is_char());
event.set_key_data(key_data.Finish());
}
client()->OnEvent(event.Finish());
waiting_for_event_ack_ = true;
return false;
}
virtual void OnAcceleratedWidgetAvailable(
gfx::AcceleratedWidget widget) OVERRIDE {
widget_ = widget;
CreateCommandBufferIfNeeded();
}
virtual void OnBoundsChanged(const gfx::Rect& bounds) OVERRIDE {
CreateCommandBufferIfNeeded();
AllocationScope scope;
client()->OnBoundsChanged(bounds);
}
virtual void OnDestroyed() OVERRIDE {
command_buffer_.reset();
client()->OnDestroyed();
base::MessageLoop::current()->Quit();
}
private:
gfx::AcceleratedWidget widget_;
scoped_ptr<services::NativeViewport> native_viewport_;
ScopedCommandBufferClientHandle command_buffer_handle_;
scoped_ptr<CommandBufferImpl> command_buffer_;
bool waiting_for_event_ack_;
int64 pending_event_timestamp_;
};
} // namespace services
} // namespace mojo
#if defined(OS_ANDROID)
// Android will call this.
MOJO_NATIVE_VIEWPORT_EXPORT mojo::Application*
CreateNativeViewportService(mojo::shell::Context* context,
mojo::ScopedShellHandle shell_handle) {
mojo::Application* app = new mojo::Application(shell_handle.Pass());
app->AddServiceFactory(
new mojo::ServiceFactory<mojo::services::NativeViewportImpl,
mojo::shell::Context>(context));
return app;
}
#else
extern "C" MOJO_NATIVE_VIEWPORT_EXPORT MojoResult MojoMain(
const MojoHandle shell_handle) {
base::MessageLoopForUI loop;
mojo::Application app(shell_handle);
app.AddServiceFactory(
new mojo::ServiceFactory<mojo::services::NativeViewportImpl,
mojo::shell::Context>);
loop.Run();
return MOJO_RESULT_OK;
}
#endif // !OS_ANDROID
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