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// Copyright (c) 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 "ash/display/mirror_window_controller.h"
#if defined(USE_X11)
#include <X11/Xlib.h>
// Xlib.h defines RootWindow.
#undef RootWindow
#endif
#include "ash/display/cursor_window_controller.h"
#include "ash/display/display_controller.h"
#include "ash/display/display_info.h"
#include "ash/display/display_manager.h"
#include "ash/display/root_window_transformers.h"
#include "ash/host/ash_window_tree_host.h"
#include "ash/host/ash_window_tree_host_init_params.h"
#include "ash/host/root_window_transformer.h"
#include "ash/root_window_settings.h"
#include "ash/shell.h"
#include "base/strings/stringprintf.h"
#include "ui/aura/client/capture_client.h"
#include "ui/aura/env.h"
#include "ui/aura/window_delegate.h"
#include "ui/aura/window_event_dispatcher.h"
#include "ui/aura/window_tree_host.h"
#include "ui/base/layout.h"
#include "ui/compositor/reflector.h"
#include "ui/gfx/canvas.h"
#include "ui/gfx/native_widget_types.h"
#if defined(USE_X11)
#include "ui/gfx/x/x11_types.h"
#endif
namespace ash {
namespace {
#if defined(USE_X11)
// Mirror window shouldn't handle input events.
void DisableInput(XID window) {
long event_mask = ExposureMask | VisibilityChangeMask |
StructureNotifyMask | PropertyChangeMask;
XSelectInput(gfx::GetXDisplay(), window, event_mask);
}
#endif
class NoneCaptureClient : public aura::client::CaptureClient {
public:
NoneCaptureClient() {}
virtual ~NoneCaptureClient() {}
private:
// Does a capture on the |window|.
virtual void SetCapture(aura::Window* window) OVERRIDE {}
// Releases a capture from the |window|.
virtual void ReleaseCapture(aura::Window* window) OVERRIDE {}
// Returns the current capture window.
virtual aura::Window* GetCaptureWindow() OVERRIDE {
return NULL;
}
virtual aura::Window* GetGlobalCaptureWindow() OVERRIDE {
return NULL;
}
DISALLOW_COPY_AND_ASSIGN(NoneCaptureClient);
};
} // namespace
MirrorWindowController::MirrorWindowController() {}
MirrorWindowController::~MirrorWindowController() {
// Make sure the root window gets deleted before cursor_window_delegate.
Close();
}
void MirrorWindowController::UpdateWindow(const DisplayInfo& display_info) {
static int mirror_host_count = 0;
if (!ash_host_.get()) {
AshWindowTreeHostInitParams init_params;
init_params.initial_bounds = display_info.bounds_in_native();
ash_host_.reset(AshWindowTreeHost::Create(init_params));
aura::WindowTreeHost* host = ash_host_->AsWindowTreeHost();
host->window()->SetName(
base::StringPrintf("MirrorRootWindow-%d", mirror_host_count++));
host->compositor()->SetBackgroundColor(SK_ColorBLACK);
// No need to remove the observer because the DisplayController outlives the
// host.
host->AddObserver(Shell::GetInstance()->display_controller());
host->AddObserver(this);
// TODO(oshima): TouchHUD is using idkey.
InitRootWindowSettings(host->window())->display_id = display_info.id();
host->InitHost();
#if defined(USE_X11)
DisableInput(host->GetAcceleratedWidget());
#endif
aura::client::SetCaptureClient(host->window(), new NoneCaptureClient());
host->Show();
// TODO(oshima): Start mirroring.
aura::Window* mirror_window = new aura::Window(NULL);
mirror_window->Init(aura::WINDOW_LAYER_TEXTURED);
host->window()->AddChild(mirror_window);
mirror_window->SetBounds(host->window()->bounds());
mirror_window->Show();
reflector_ = aura::Env::GetInstance()->context_factory()->CreateReflector(
Shell::GetPrimaryRootWindow()->GetHost()->compositor(),
mirror_window->layer());
} else {
aura::WindowTreeHost* host = ash_host_->AsWindowTreeHost();
GetRootWindowSettings(host->window())->display_id = display_info.id();
host->SetBounds(display_info.bounds_in_native());
}
DisplayManager* display_manager = Shell::GetInstance()->display_manager();
const DisplayInfo& source_display_info = display_manager->GetDisplayInfo(
Shell::GetScreen()->GetPrimaryDisplay().id());
DCHECK(display_manager->IsMirrored());
scoped_ptr<RootWindowTransformer> transformer(
CreateRootWindowTransformerForMirroredDisplay(source_display_info,
display_info));
ash_host_->SetRootWindowTransformer(transformer.Pass());
}
void MirrorWindowController::UpdateWindow() {
if (ash_host_.get()) {
DisplayManager* display_manager = Shell::GetInstance()->display_manager();
const DisplayInfo& mirror_display_info = display_manager->GetDisplayInfo(
display_manager->mirrored_display_id());
UpdateWindow(mirror_display_info);
}
}
void MirrorWindowController::Close() {
if (ash_host_.get()) {
aura::WindowTreeHost* host = ash_host_->AsWindowTreeHost();
aura::Env::GetInstance()->context_factory()->RemoveReflector(reflector_);
reflector_ = NULL;
NoneCaptureClient* capture_client = static_cast<NoneCaptureClient*>(
aura::client::GetCaptureClient(host->window()));
aura::client::SetCaptureClient(host->window(), NULL);
delete capture_client;
host->RemoveObserver(Shell::GetInstance()->display_controller());
host->RemoveObserver(this);
ash_host_.reset();
}
}
void MirrorWindowController::OnHostResized(const aura::WindowTreeHost* host) {
if (mirror_window_host_size_ == host->GetBounds().size())
return;
mirror_window_host_size_ = host->GetBounds().size();
reflector_->OnMirroringCompositorResized();
ash_host_->SetRootWindowTransformer(CreateRootWindowTransformer().Pass());
Shell::GetInstance()->display_controller()->cursor_window_controller()->
UpdateLocation();
}
aura::Window* MirrorWindowController::GetWindow() {
return ash_host_.get() ? ash_host_->AsWindowTreeHost()->window() : NULL;
}
scoped_ptr<RootWindowTransformer>
MirrorWindowController::CreateRootWindowTransformer() const {
DisplayManager* display_manager = Shell::GetInstance()->display_manager();
const DisplayInfo& mirror_display_info = display_manager->GetDisplayInfo(
display_manager->mirrored_display_id());
const DisplayInfo& source_display_info = display_manager->GetDisplayInfo(
Shell::GetScreen()->GetPrimaryDisplay().id());
DCHECK(display_manager->IsMirrored());
return scoped_ptr<RootWindowTransformer>(
CreateRootWindowTransformerForMirroredDisplay(source_display_info,
mirror_display_info));
}
} // namespace ash
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