widget/windows/WindowsUIUtils.h

   1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
   2 /* This Source Code Form is subject to the terms of the Mozilla Public
   3  * License, v. 2.0. If a copy of the MPL was not distributed with this
   4  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
   5
   6 #ifndef mozilla_widget_WindowsUIUtils_h__
   7 #define mozilla_widget_WindowsUIUtils_h__
   8
   9 #include "nsIWindowsUIUtils.h"
  10 #include "nsString.h"
  11 #include "nsColor.h"
  12 #include "mozilla/Maybe.h"
  13 #include "mozilla/MozPromise.h"
  14
  15 using SharePromise =
  16     mozilla::MozPromise<bool, nsresult, /* IsExclusive */ true>;
  17
  18 namespace mozilla {
  19 enum class ColorScheme : uint8_t;
  20 }
  21
  22 class WindowsUIUtils final : public nsIWindowsUIUtils {
  23  public:
  24   NS_DECL_ISUPPORTS
  25   NS_DECL_NSIWINDOWSUIUTILS
  26
  27   WindowsUIUtils();
  28
  29   static RefPtr<SharePromise> Share(nsAutoString aTitle, nsAutoString aText,
  30                                     nsAutoString aUrl);
  31
  32   static void UpdateInTabletMode();
  33   static bool GetInTabletMode();
  34
  35   // Gets the system accent color, or one of the darker / lighter variants
  36   // (darker = -1/2/3, lighter=+1/2/3, values outside of that range are
  37   // disallowed).
  38   static mozilla::Maybe<nscolor> GetAccentColor(int aTone = 0);
  39   static mozilla::Maybe<nscolor> GetSystemColor(mozilla::ColorScheme, int);
  40
  41   // Use LookAndFeel for a cached getter.
  42   static bool ComputeOverlayScrollbars();
  43   static double ComputeTextScaleFactor();
  44
  45  protected:
  46   ~WindowsUIUtils();
  47 };
  48
  49 #endif  // mozilla_widget_WindowsUIUtils_h__