widget/WidgetUtils.h
author Valentin Gosu <valentin.gosu@gmail.com>
Fri, 02 Nov 2018 17:38:37 -0400
changeset 501038 8016d0d1a391f1327a0375fb6d4f20228b2784aa
parent 443052 cd2a5b5cf752194818cee5f96f2ae5cdcbf3d564
child 508163 6f3709b3878117466168c40affa7bca0b60cf75b
permissions -rw-r--r--
Bug 1503725 - Do not deallocate nsThreadShutdownContext when leaking thread. r=erahm, a=RyanVM Sometimes when we call ShutdownWithTimeout on a thread pool, the unresponsive thread that we leak will actually complete before the main thread is done. In that case, the thread will dereference the thread shutdown context, so we must intentionally leak it too. Differential Revision: https://phabricator.services.mozilla.com/D10645

/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*-
 * vim: sw=2 ts=8 et :
 */
/* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this file,
 * You can obtain one at http://mozilla.org/MPL/2.0/. */

#ifndef mozilla_WidgetUtils_h
#define mozilla_WidgetUtils_h

#include "mozilla/EventForwards.h"
#include "mozilla/gfx/Matrix.h"
#include "nsCOMPtr.h"
#include "nsIWidget.h"
#include "nsRect.h"

class nsPIDOMWindowOuter;

namespace mozilla {

// NB: these must match up with pseudo-enum in nsIScreen.idl.
enum ScreenRotation {
  ROTATION_0 = 0,
  ROTATION_90,
  ROTATION_180,
  ROTATION_270,

  ROTATION_COUNT
};

gfx::Matrix ComputeTransformForRotation(const nsIntRect& aBounds,
                                        ScreenRotation aRotation);

gfx::Matrix ComputeTransformForUnRotation(const nsIntRect& aBounds,
                                          ScreenRotation aRotation);

nsIntRect RotateRect(nsIntRect aRect,
                     const nsIntRect& aBounds,
                     ScreenRotation aRotation);

namespace widget {

class WidgetUtils
{
public:
  /**
   * Shutdown() is called when "xpcom-will-shutdown" is notified.  This is
   * useful when you need to observe the notification in XP level code under
   * widget.
   */
  static void Shutdown();

  /**
   * Starting at the docshell item for the passed in DOM window this looks up
   * the docshell tree until it finds a docshell item that has a widget.
   */
  static already_AddRefed<nsIWidget> DOMWindowToWidget(nsPIDOMWindowOuter* aDOMWindow);

  /**
   * Compute our keyCode value (NS_VK_*) from an ASCII character.
   */
  static uint32_t ComputeKeyCodeFromChar(uint32_t aCharCode);

  /**
   * Get unshifted charCode and shifted charCode for aKeyCode if the keyboad
   * layout is a Latin keyboard layout.
   *
   * @param aKeyCode            Our keyCode (NS_VK_*).
   * @param aIsCapsLock         TRUE if CapsLock is Locked.  Otherwise, FALSE.
   *                            This is used only when aKeyCode is NS_VK_[0-9].
   * @param aUnshiftedCharCode  CharCode for aKeyCode without Shift key.
   *                            This may be zero if aKeyCode key doesn't input
   *                            a Latin character.
   *                            Note that must not be nullptr.
   * @param aShiftedCharCode    CharCode for aKeyCOde with Shift key.
   *                            This is always 0 when aKeyCode isn't
   *                            NS_VK_[A-Z].
   *                            Note that must not be nullptr.
   */
  static void GetLatinCharCodeForKeyCode(uint32_t aKeyCode,
                                         bool aIsCapsLock,
                                         uint32_t* aUnshiftedCharCode,
                                         uint32_t* aShiftedCharCode);

  /**
  * Does device have touch support
  */
  static uint32_t IsTouchDeviceSupportPresent();

  /**
   * Send bidi keyboard information to content process
   */
  static void SendBidiKeyboardInfoToContent();

  /**
   * Get branchShortName from string bundle
   */
  static void GetBrandShortName(nsAString& aBrandName);

};

} // namespace widget
} // namespace mozilla

#endif // mozilla_WidgetUtils_h