hal/windows/WindowsScreenConfiguration.cpp

   1 /* This Source Code Form is subject to the terms of the Mozilla Public
   2  * License, v. 2.0. If a copy of the MPL was not distributed with this file,
   3  * You can obtain one at http://mozilla.org/MPL/2.0/. */
   4
   5 #include "Hal.h"
   6 #include "mozilla/widget/ScreenManager.h"
   7 #include "nsIWindowsUIUtils.h"
   8 #include "WinUtils.h"
   9
  10 #include <windows.h>
  11
  12 namespace mozilla {
  13 namespace hal_impl {
  14
  15 static decltype(SetDisplayAutoRotationPreferences)*
  16     sSetDisplayAutoRotationPreferences = nullptr;
  17
  18 RefPtr<GenericNonExclusivePromise> LockScreenOrientation(
  19     const hal::ScreenOrientation& aOrientation) {
  20   AR_STATE state;
  21   if (!widget::WinUtils::GetAutoRotationState(&state)) {
  22     return GenericNonExclusivePromise::CreateAndReject(
  23         NS_ERROR_DOM_NOT_SUPPORTED_ERR, __func__);
  24   }
  25
  26   if (state & (AR_DISABLED | AR_REMOTESESSION | AR_MULTIMON | AR_NOSENSOR |
  27                AR_NOT_SUPPORTED | AR_LAPTOP | AR_DOCKED)) {
  28     return GenericNonExclusivePromise::CreateAndReject(
  29         NS_ERROR_DOM_NOT_SUPPORTED_ERR, __func__);
  30   }
  31
  32   if (!sSetDisplayAutoRotationPreferences) {
  33     HMODULE user32dll = GetModuleHandleW(L"user32.dll");
  34     if (user32dll) {
  35       sSetDisplayAutoRotationPreferences =
  36           (decltype(SetDisplayAutoRotationPreferences)*)GetProcAddress(
  37               user32dll, "SetDisplayAutoRotationPreferences");
  38     }
  39     if (!sSetDisplayAutoRotationPreferences) {
  40       return GenericNonExclusivePromise::CreateAndReject(
  41           NS_ERROR_DOM_NOT_SUPPORTED_ERR, __func__);
  42     }
  43   }
  44
  45   ORIENTATION_PREFERENCE orientation = ORIENTATION_PREFERENCE_NONE;
  46
  47   if (aOrientation == hal::ScreenOrientation::Default) {
  48     // Actually, current screen is single and tablet mode according to
  49     // GetAutoRotationState. So get primary screen data for natural orientation.
  50     RefPtr<widget::Screen> screen =
  51         widget::ScreenManager::GetSingleton().GetPrimaryScreen();
  52     hal::ScreenOrientation defaultOrientation =
  53         screen->GetDefaultOrientationType();
  54     if (defaultOrientation == hal::ScreenOrientation::LandscapePrimary) {
  55       orientation = ORIENTATION_PREFERENCE_LANDSCAPE;
  56     } else {
  57       orientation = ORIENTATION_PREFERENCE_PORTRAIT;
  58     }
  59   } else {
  60     if (aOrientation & hal::ScreenOrientation::LandscapePrimary) {
  61       orientation |= ORIENTATION_PREFERENCE_LANDSCAPE;
  62     }
  63     if (aOrientation & hal::ScreenOrientation::LandscapeSecondary) {
  64       orientation |= ORIENTATION_PREFERENCE_LANDSCAPE_FLIPPED;
  65     }
  66     if (aOrientation & hal::ScreenOrientation::PortraitPrimary) {
  67       orientation |= ORIENTATION_PREFERENCE_PORTRAIT;
  68     }
  69     if (aOrientation & hal::ScreenOrientation::PortraitSecondary) {
  70       orientation |= ORIENTATION_PREFERENCE_PORTRAIT_FLIPPED;
  71     }
  72   }
  73
  74   if (!sSetDisplayAutoRotationPreferences(orientation)) {
  75     return GenericNonExclusivePromise::CreateAndReject(NS_ERROR_DOM_ABORT_ERR,
  76                                                        __func__);
  77   }
  78
  79   return GenericNonExclusivePromise::CreateAndResolve(true, __func__);
  80 }
  81
  82 void UnlockScreenOrientation() {
  83   if (!sSetDisplayAutoRotationPreferences) {
  84     return;
  85   }
  86   // This does nothing if the device doesn't support orientation lock
  87   sSetDisplayAutoRotationPreferences(ORIENTATION_PREFERENCE_NONE);
  88 }
  89
  90 }  // namespace hal_impl
  91 }  // namespace mozilla