tor-browser

The Tor Browser
git clone https://git.dasho.dev/tor-browser.git
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WindowsScreenConfiguration.cpp (3287B)

      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