import FIREFOX_52_6_0esr_RELEASE from mozilla-esr52 hg repo

widget/WidgetUtils.h

@@ -0,0 +1,99 @@
+/* -*- 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();
+};
+
+} // namespace widget
+} // namespace mozilla
+
+#endif // mozilla_WidgetUtils_h