Rename EventExecutor to InputInjector.

remoting/host/event_executor_mac.cc

-// Copyright (c) 2012 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 "remoting/host/event_executor.h"
-
-#include <algorithm>
-#include <ApplicationServices/ApplicationServices.h>
-#include <Carbon/Carbon.h>
-
-#include "base/basictypes.h"
-#include "base/bind.h"
-#include "base/compiler_specific.h"
-#include "base/location.h"
-#include "base/mac/scoped_cftyperef.h"
-#include "base/memory/ref_counted.h"
-#include "base/single_thread_task_runner.h"
-#include "media/video/capture/screen/mac/desktop_configuration.h"
-#include "remoting/host/clipboard.h"
-#include "remoting/proto/internal.pb.h"
-#include "remoting/protocol/message_decoder.h"
-#include "skia/ext/skia_utils_mac.h"
-#include "third_party/skia/include/core/SkPoint.h"
-#include "third_party/skia/include/core/SkRect.h"
-
-namespace remoting {
-
-namespace {
-
-using protocol::ClipboardEvent;
-using protocol::KeyEvent;
-using protocol::MouseEvent;
-
-// USB to Mac keycode mapping table.
-#define USB_KEYMAP(usb, xkb, win, mac) {usb, mac}
-#include "ui/base/keycodes/usb_keycode_map.h"
-#undef USB_KEYMAP
-
-// skia/ext/skia_utils_mac.h only defines CGRectToSkRect().
-SkIRect CGRectToSkIRect(const CGRect& rect) {
-  SkIRect result;
-  gfx::CGRectToSkRect(rect).round(&result);
-  return result;
-}
-
-// A class to generate events on Mac.
-class EventExecutorMac : public EventExecutor {
- public:
-  explicit EventExecutorMac(
-      scoped_refptr<base::SingleThreadTaskRunner> task_runner);
-  virtual ~EventExecutorMac();
-
-  // ClipboardStub interface.
-  virtual void InjectClipboardEvent(const ClipboardEvent& event) OVERRIDE;
-
-  // InputStub interface.
-  virtual void InjectKeyEvent(const KeyEvent& event) OVERRIDE;
-  virtual void InjectMouseEvent(const MouseEvent& event) OVERRIDE;
-
-  // EventExecutor interface.
-  virtual void Start(
-      scoped_ptr<protocol::ClipboardStub> client_clipboard) OVERRIDE;
-
- private:
-  // The actual implementation resides in EventExecutorMac::Core class.
-  class Core : public base::RefCountedThreadSafe<Core> {
-   public:
-    explicit Core(scoped_refptr<base::SingleThreadTaskRunner> task_runner);
-
-    // Mirrors the ClipboardStub interface.
-    void InjectClipboardEvent(const ClipboardEvent& event);
-
-    // Mirrors the InputStub interface.
-    void InjectKeyEvent(const KeyEvent& event);
-    void InjectMouseEvent(const MouseEvent& event);
-
-    // Mirrors the EventExecutor interface.
-    void Start(scoped_ptr<protocol::ClipboardStub> client_clipboard);
-
-    void Stop();
-
-   private:
-    friend class base::RefCountedThreadSafe<Core>;
-    virtual ~Core();
-
-    scoped_refptr<base::SingleThreadTaskRunner> task_runner_;
-    SkIPoint mouse_pos_;
-    uint32 mouse_button_state_;
-    scoped_ptr<Clipboard> clipboard_;
-
-    DISALLOW_COPY_AND_ASSIGN(Core);
-  };
-
-  scoped_refptr<Core> core_;
-
-  DISALLOW_COPY_AND_ASSIGN(EventExecutorMac);
-};
-
-EventExecutorMac::EventExecutorMac(
-    scoped_refptr<base::SingleThreadTaskRunner> task_runner) {
-  core_ = new Core(task_runner);
-}
-
-EventExecutorMac::~EventExecutorMac() {
-  core_->Stop();
-}
-
-void EventExecutorMac::InjectClipboardEvent(const ClipboardEvent& event) {
-  core_->InjectClipboardEvent(event);
-}
-
-void EventExecutorMac::InjectKeyEvent(const KeyEvent& event) {
-  core_->InjectKeyEvent(event);
-}
-
-void EventExecutorMac::InjectMouseEvent(const MouseEvent& event) {
-  core_->InjectMouseEvent(event);
-}
-
-void EventExecutorMac::Start(
-    scoped_ptr<protocol::ClipboardStub> client_clipboard) {
-  core_->Start(client_clipboard.Pass());
-}
-
-EventExecutorMac::Core::Core(
-    scoped_refptr<base::SingleThreadTaskRunner> task_runner)
-    : task_runner_(task_runner),
-      mouse_button_state_(0),
-      clipboard_(Clipboard::Create()) {
-  // Ensure that local hardware events are not suppressed after injecting
-  // input events.  This allows LocalInputMonitor to detect if the local mouse
-  // is being moved whilst a remote user is connected.
-  // This API is deprecated, but it is needed when using the deprecated
-  // injection APIs.
-  // If the non-deprecated injection APIs were used instead, the equivalent of
-  // this line would not be needed, as OS X defaults to _not_ suppressing local
-  // inputs in that case.
-#pragma clang diagnostic push
-#pragma clang diagnostic ignored "-Wdeprecated-declarations"
-  CGSetLocalEventsSuppressionInterval(0.0);
-#pragma clang diagnostic pop
-}
-
-void EventExecutorMac::Core::InjectClipboardEvent(const ClipboardEvent& event) {
-  if (!task_runner_->BelongsToCurrentThread()) {
-    task_runner_->PostTask(
-        FROM_HERE, base::Bind(&Core::InjectClipboardEvent, this, event));
-    return;
-  }
-
-  // |clipboard_| will ignore unknown MIME-types, and verify the data's format.
-  clipboard_->InjectClipboardEvent(event);
-}
-
-void EventExecutorMac::Core::InjectKeyEvent(const KeyEvent& event) {
-  // HostEventDispatcher should filter events missing the pressed field.
-  if (!event.has_pressed() || !event.has_usb_keycode())
-    return;
-
-  int keycode = UsbKeycodeToNativeKeycode(event.usb_keycode());
-
-  VLOG(3) << "Converting USB keycode: " << std::hex << event.usb_keycode()
-          << " to keycode: " << keycode << std::dec;
-
-  // If we couldn't determine the Mac virtual key code then ignore the event.
-  if (keycode == InvalidNativeKeycode())
-    return;
-
-  // We use the deprecated event injection API because the new one doesn't
-  // work with switched-out sessions (curtain mode).
-#pragma clang diagnostic push
-#pragma clang diagnostic ignored "-Wdeprecated-declarations"
-  CGError error = CGPostKeyboardEvent(0, keycode, event.pressed());
-#pragma clang diagnostic pop
-  if (error != kCGErrorSuccess)
-    LOG(WARNING) << "CGPostKeyboardEvent error " << error;
-}
-
-void EventExecutorMac::Core::InjectMouseEvent(const MouseEvent& event) {
-  if (event.has_x() && event.has_y()) {
-    // On multi-monitor systems (0,0) refers to the top-left of the "main"
-    // display, whereas our coordinate scheme places (0,0) at the top-left of
-    // the bounding rectangle around all the displays, so we need to translate
-    // accordingly.
-
-    // Set the mouse position assuming single-monitor.
-    mouse_pos_ = SkIPoint::Make(event.x(), event.y());
-
-    // Fetch the desktop configuration.
-    // TODO(wez): Optimize this out, or at least only enumerate displays in
-    // response to display-changed events. VideoFrameCapturer's VideoFrames
-    // could be augmented to include native cursor coordinates for use by
-    // MouseClampingFilter, removing the need for translation here.
-    media::MacDesktopConfiguration desktop_config =
-        media::MacDesktopConfiguration::GetCurrent(
-            media::MacDesktopConfiguration::TopLeftOrigin);
-
-    // Translate the mouse position into desktop coordinates.
-    mouse_pos_ += SkIPoint::Make(desktop_config.pixel_bounds.left(),
-                                 desktop_config.pixel_bounds.top());
-
-    // Constrain the mouse position to the desktop coordinates.
-    mouse_pos_ = SkIPoint::Make(
-       std::max(desktop_config.pixel_bounds.left(),
-           std::min(desktop_config.pixel_bounds.right(), mouse_pos_.x())),
-       std::max(desktop_config.pixel_bounds.top(),
-           std::min(desktop_config.pixel_bounds.bottom(), mouse_pos_.y())));
-
-    // Convert from pixel to Density Independent Pixel coordinates.
-    mouse_pos_ = SkIPoint::Make(
-        SkScalarRound(mouse_pos_.x() / desktop_config.dip_to_pixel_scale),
-        SkScalarRound(mouse_pos_.y() / desktop_config.dip_to_pixel_scale));
-
-    VLOG(3) << "Moving mouse to " << mouse_pos_.x() << "," << mouse_pos_.y();
-  }
-  if (event.has_button() && event.has_button_down()) {
-    if (event.button() >= 1 && event.button() <= 3) {
-      VLOG(2) << "Button " << event.button()
-              << (event.button_down() ? " down" : " up");
-      int button_change = 1 << (event.button() - 1);
-      if (event.button_down())
-        mouse_button_state_ |= button_change;
-      else
-        mouse_button_state_ &= ~button_change;
-    } else {
-      VLOG(1) << "Unknown mouse button: " << event.button();
-    }
-  }
-  // We use the deprecated CGPostMouseEvent API because we receive low-level
-  // mouse events, whereas CGEventCreateMouseEvent is for injecting higher-level
-  // events. For example, the deprecated APIs will detect double-clicks or drags
-  // in a way that is consistent with how they would be generated using a local
-  // mouse, whereas the new APIs expect us to inject these higher-level events
-  // directly.
-  CGPoint position = CGPointMake(mouse_pos_.x(), mouse_pos_.y());
-  enum {
-    LeftBit = 1 << (MouseEvent::BUTTON_LEFT - 1),
-    MiddleBit = 1 << (MouseEvent::BUTTON_MIDDLE - 1),
-    RightBit = 1 << (MouseEvent::BUTTON_RIGHT - 1)
-  };
-#pragma clang diagnostic push
-#pragma clang diagnostic ignored "-Wdeprecated-declarations"
-  CGError error = CGPostMouseEvent(position, true, 3,
-                                   (mouse_button_state_ & LeftBit) != 0,
-                                   (mouse_button_state_ & RightBit) != 0,
-                                   (mouse_button_state_ & MiddleBit) != 0);
-#pragma clang diagnostic pop
-  if (error != kCGErrorSuccess)
-    LOG(WARNING) << "CGPostMouseEvent error " << error;
-
-  if (event.has_wheel_delta_x() && event.has_wheel_delta_y()) {
-    int delta_x = static_cast<int>(event.wheel_delta_x());
-    int delta_y = static_cast<int>(event.wheel_delta_y());
-    base::mac::ScopedCFTypeRef<CGEventRef> event(
-        CGEventCreateScrollWheelEvent(
-            NULL, kCGScrollEventUnitPixel, 2, delta_y, delta_x));
-    if (event)
-      CGEventPost(kCGSessionEventTap, event);
-  }
-}
-
-void EventExecutorMac::Core::Start(
-    scoped_ptr<protocol::ClipboardStub> client_clipboard) {
-  if (!task_runner_->BelongsToCurrentThread()) {
-    task_runner_->PostTask(
-        FROM_HERE,
-        base::Bind(&Core::Start, this, base::Passed(&client_clipboard)));
-    return;
-  }
-
-  clipboard_->Start(client_clipboard.Pass());
-}
-
-void EventExecutorMac::Core::Stop() {
-  if (!task_runner_->BelongsToCurrentThread()) {
-    task_runner_->PostTask(FROM_HERE, base::Bind(&Core::Stop, this));
-    return;
-  }
-
-  clipboard_->Stop();
-}
-
-EventExecutorMac::Core::~Core() {
-}
-
-}  // namespace
-
-scoped_ptr<EventExecutor> EventExecutor::Create(
-    scoped_refptr<base::SingleThreadTaskRunner> main_task_runner,
-    scoped_refptr<base::SingleThreadTaskRunner> ui_task_runner) {
-  return scoped_ptr<EventExecutor>(new EventExecutorMac(main_task_runner));
-}
-
-}  // namespace remoting