firefox-main/widget/windows/WindowsUIUtils.cpp (file symbol)

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/* 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/. */
#include <windows.h>
#include <winreg.h>
#include <wrl.h>
#include <powerbase.h>
#include <cfgmgr32.h>
#include "nsServiceManagerUtils.h"
#include "WindowsUIUtils.h"
#include "nsIObserverService.h"
#include "nsIAppShellService.h"
#include "nsAppShellCID.h"
#include "mozilla/ClearOnShutdown.h"
#include "mozilla/ResultVariant.h"
#include "mozilla/Services.h"
#include "mozilla/StaticPrefs_widget.h"
#include "mozilla/WidgetUtils.h"
#include "mozilla/WindowsVersion.h"
#include "mozilla/LookAndFeel.h"
#include "mozilla/media/MediaUtils.h"
#include "nsString.h"
#include "nsGlobalWindowOuter.h"
#include "nsIWidget.h"
#include "nsIWindowMediator.h"
#include "nsPIDOMWindow.h"
#include "nsWindowGfx.h"
#include "Units.h"
#include "nsWindowsHelpers.h"
#include "WinRegistry.h"
#include "WinUtils.h"
mozilla::LazyLogModule gTabletModeLog("TabletMode");
extern mozilla::LazyLogModule gWindowsLog;
/* mingw currently doesn't support windows.ui.viewmanagement.h, so we disable it
* until it's fixed. */
#ifndef __MINGW32__
# include <inspectable.h>
# include <roapi.h>
# include <windows.ui.viewmanagement.h>
# include <uiviewsettingsinterop.h>
# pragma comment(lib, "runtimeobject.lib")
using namespace ABI::Windows::UI;
using namespace ABI::Windows::UI::ViewManagement;
using namespace Microsoft::WRL;
using namespace Microsoft::WRL::Wrappers;
using namespace ABI::Windows::Foundation;
using namespace ABI::Windows::ApplicationModel::DataTransfer;
#endif
using namespace mozilla;
// Since Win10 and Win11 tablet modes can't both be simultaneously active, we
// only need one backing variable for the both of them.
enum class TabletModeState : uint8_t { Unknown, Off, On };
static TabletModeState sInTabletModeState = TabletModeState::Unknown;
WindowsUIUtils::WindowsUIUtils() = default;
WindowsUIUtils::~WindowsUIUtils() = default;
NS_IMPL_ISUPPORTS(WindowsUIUtils, nsIWindowsUIUtils)
NS_IMETHODIMP
WindowsUIUtils::GetSystemSmallIconSize(int32_t* aSize) {
NS_ENSURE_ARG(aSize);
mozilla::LayoutDeviceIntSize size =
nsWindowGfx::GetIconMetrics(nsWindowGfx::kSmallIcon);
*aSize = std::max(size.width, size.height);
return NS_OK;
}
NS_IMETHODIMP
WindowsUIUtils::GetSystemLargeIconSize(int32_t* aSize) {
NS_ENSURE_ARG(aSize);
mozilla::LayoutDeviceIntSize size =
nsWindowGfx::GetIconMetrics(nsWindowGfx::kRegularIcon);
*aSize = std::max(size.width, size.height);
return NS_OK;
}
NS_IMETHODIMP
WindowsUIUtils::SetWindowIcon(mozIDOMWindowProxy* aWindow,
imgIContainer* aSmallIcon,
imgIContainer* aBigIcon) {
NS_ENSURE_ARG(aWindow);
nsCOMPtr<nsIWidget> widget =
nsGlobalWindowOuter::Cast(aWindow)->GetMainWidget();
nsWindow* window = static_cast<nsWindow*>(widget.get());
if (!window) {
NS_WARNING("SetWindowIcon failed - missing widget");
return NS_OK;
}
nsresult rv;
if (aSmallIcon) {
HICON hIcon = nullptr;
rv = nsWindowGfx::CreateIcon(
aSmallIcon, nullptr, false, mozilla::LayoutDeviceIntPoint(),
nsWindowGfx::GetIconMetrics(nsWindowGfx::kSmallIcon), &hIcon);
NS_ENSURE_SUCCESS(rv, rv);
window->SetSmallIcon(hIcon);
}
if (aBigIcon) {
HICON hIcon = nullptr;
rv = nsWindowGfx::CreateIcon(
aBigIcon, nullptr, false, mozilla::LayoutDeviceIntPoint(),
nsWindowGfx::GetIconMetrics(nsWindowGfx::kRegularIcon), &hIcon);
NS_ENSURE_SUCCESS(rv, rv);
window->SetBigIcon(hIcon);
}
return NS_OK;
}
NS_IMETHODIMP
WindowsUIUtils::SetWindowIconFromExe(mozIDOMWindowProxy* aWindow,
const nsAString& aExe, uint16_t aIndex) {
NS_ENSURE_ARG(aWindow);
nsCOMPtr<nsIWidget> widget =
nsGlobalWindowOuter::Cast(aWindow)->GetMainWidget();
nsWindow* window = static_cast<nsWindow*>(widget.get());
if (!window) {
NS_WARNING("SetWindowIconFromExe failed - missing widget");
return NS_OK;
}
HICON icon = ::LoadIconW(::GetModuleHandleW(PromiseFlatString(aExe).get()),
MAKEINTRESOURCEW(aIndex));
window->SetBigIcon(icon);
window->SetSmallIcon(icon);
return NS_OK;
}
NS_IMETHODIMP
WindowsUIUtils::SetWindowIconNoData(mozIDOMWindowProxy* aWindow) {
NS_ENSURE_ARG(aWindow);
nsCOMPtr<nsIWidget> widget =
nsGlobalWindowOuter::Cast(aWindow)->GetMainWidget();
nsWindow* window = static_cast<nsWindow*>(widget.get());
if (!window) {
NS_WARNING("SetWindowIconNoData failed - missing widget");
return NS_OK;
}
window->SetSmallIconNoData();
window->SetBigIconNoData();
return NS_OK;
}
bool WindowsUIUtils::GetInWin10TabletMode() {
MOZ_DIAGNOSTIC_ASSERT(NS_IsMainThread());
if (IsWin11OrLater()) {
return false;
}
if (sInTabletModeState == TabletModeState::Unknown) {
UpdateInWin10TabletMode();
}
return sInTabletModeState == TabletModeState::On;
}
bool WindowsUIUtils::GetInWin11TabletMode() {
MOZ_DIAGNOSTIC_ASSERT(NS_IsMainThread());
if (!IsWin11OrLater()) {
return false;
}
if (sInTabletModeState == TabletModeState::Unknown) {
UpdateInWin11TabletMode();
}
return sInTabletModeState == TabletModeState::On;
}
NS_IMETHODIMP
WindowsUIUtils::GetInWin10TabletMode(bool* aResult) {
*aResult = GetInWin10TabletMode();
return NS_OK;
}
NS_IMETHODIMP
WindowsUIUtils::GetInWin11TabletMode(bool* aResult) {
*aResult = GetInWin11TabletMode();
return NS_OK;
}
static IInspectable* GetUISettings() {
MOZ_DIAGNOSTIC_ASSERT(NS_IsMainThread());
#ifndef __MINGW32__
// We need to keep this alive for ~ever so that change callbacks work as
// expected, sigh.
static StaticRefPtr<IInspectable> sUiSettingsAsInspectable;
if (!sUiSettingsAsInspectable) {
ComPtr<IInspectable> uiSettingsAsInspectable;
::RoActivateInstance(
HStringReference(RuntimeClass_Windows_UI_ViewManagement_UISettings)
.Get(),
&uiSettingsAsInspectable);
if (NS_WARN_IF(!uiSettingsAsInspectable)) {
return nullptr;
}
ComPtr<IUISettings5> uiSettings5;
if (SUCCEEDED(uiSettingsAsInspectable.As(&uiSettings5))) {
EventRegistrationToken unusedToken;
auto callback = Callback<ITypedEventHandler<
UISettings*, UISettingsAutoHideScrollBarsChangedEventArgs*>>(
[](auto...) {
// Scrollbar sizes change layout.
LookAndFeel::NotifyChangedAllWindows(
widget::ThemeChangeKind::StyleAndLayout);
return S_OK;
});
(void)NS_WARN_IF(FAILED(uiSettings5->add_AutoHideScrollBarsChanged(
callback.Get(), &unusedToken)));
}
ComPtr<IUISettings2> uiSettings2;
if (SUCCEEDED(uiSettingsAsInspectable.As(&uiSettings2))) {
EventRegistrationToken unusedToken;
auto callback =
Callback<ITypedEventHandler<UISettings*, IInspectable*>>([](auto...) {
// Text scale factor changes style and layout.
LookAndFeel::NotifyChangedAllWindows(
widget::ThemeChangeKind::StyleAndLayout);
return S_OK;
});
(void)NS_WARN_IF(FAILED(uiSettings2->add_TextScaleFactorChanged(
callback.Get(), &unusedToken)));
}
ComPtr<IUISettings3> uiSettings3;
if (SUCCEEDED(uiSettingsAsInspectable.As(&uiSettings3))) {
EventRegistrationToken unusedToken;
auto callback =
Callback<ITypedEventHandler<UISettings*, IInspectable*>>([](auto...) {
// System color changes change style only.
LookAndFeel::NotifyChangedAllWindows(
widget::ThemeChangeKind::Style);
return S_OK;
});
(void)NS_WARN_IF(FAILED(
uiSettings3->add_ColorValuesChanged(callback.Get(), &unusedToken)));
}
ComPtr<IUISettings4> uiSettings4;
if (SUCCEEDED(uiSettingsAsInspectable.As(&uiSettings4))) {
EventRegistrationToken unusedToken;
auto callback =
Callback<ITypedEventHandler<UISettings*, IInspectable*>>([](auto...) {
// Transparent effects changes change media queries only.
LookAndFeel::NotifyChangedAllWindows(
widget::ThemeChangeKind::MediaQueriesOnly);
return S_OK;
});
(void)NS_WARN_IF(FAILED(uiSettings4->add_AdvancedEffectsEnabledChanged(
callback.Get(), &unusedToken)));
}
sUiSettingsAsInspectable = dont_AddRef(uiSettingsAsInspectable.Detach());
ClearOnShutdown(&sUiSettingsAsInspectable);
}
return sUiSettingsAsInspectable.get();
#else
return nullptr;
#endif
}
Maybe<nscolor> WindowsUIUtils::GetAccentColor(int aTone) {
MOZ_ASSERT(aTone >= -3);
MOZ_ASSERT(aTone <= 3);
#ifndef __MINGW32__
ComPtr<IInspectable> settings = GetUISettings();
if (NS_WARN_IF(!settings)) {
return Nothing();
}
ComPtr<IUISettings3> uiSettings3;
if (NS_WARN_IF(FAILED(settings.As(&uiSettings3)))) {
return Nothing();
}
Color color;
auto colorType = UIColorType(int(UIColorType_Accent) + aTone);
if (NS_WARN_IF(FAILED(uiSettings3->GetColorValue(colorType, &color)))) {
return Nothing();
}
return Some(NS_RGBA(color.R, color.G, color.B, color.A));
#else
return Nothing();
#endif
}
Maybe<nscolor> WindowsUIUtils::GetSystemColor(ColorScheme aScheme,
int aSysColor) {
#ifndef __MINGW32__
if (!StaticPrefs::widget_windows_uwp_system_colors_enabled()) {
return Nothing();
}
// Is a useful resource to see which values have decent contrast.
if (StaticPrefs::widget_windows_uwp_system_colors_highlight_accent()) {
if (aSysColor == COLOR_HIGHLIGHT) {
int tone = aScheme == ColorScheme::Light ? 0 : -1;
if (auto c = GetAccentColor(tone)) {
return c;
}
}
if (aSysColor == COLOR_HIGHLIGHTTEXT && GetAccentColor()) {
return Some(NS_RGBA(255, 255, 255, 255));
}
}
if (aScheme == ColorScheme::Dark) {
// There are no explicitly dark colors in UWP, other than the highlight
// colors above.
return Nothing();
}
auto knownType = [&]() -> Maybe<UIElementType> {
# define MAP(_win32, _uwp) \
case COLOR_##_win32: \
return Some(UIElementType_##_uwp)
switch (aSysColor) {
MAP(HIGHLIGHT, Highlight);
MAP(HIGHLIGHTTEXT, HighlightText);
MAP(ACTIVECAPTION, ActiveCaption);
MAP(BTNFACE, ButtonFace);
MAP(BTNTEXT, ButtonText);
MAP(CAPTIONTEXT, CaptionText);
MAP(GRAYTEXT, GrayText);
MAP(HOTLIGHT, Hotlight);
MAP(INACTIVECAPTION, InactiveCaption);
MAP(INACTIVECAPTIONTEXT, InactiveCaptionText);
MAP(WINDOW, Window);
MAP(WINDOWTEXT, WindowText);
default:
return Nothing();
}
# undef MAP
}();
if (!knownType) {
return Nothing();
}
ComPtr<IInspectable> settings = GetUISettings();
if (NS_WARN_IF(!settings)) {
return Nothing();
}
ComPtr<IUISettings> uiSettings;
if (NS_WARN_IF(FAILED(settings.As(&uiSettings)))) {
return Nothing();
}
Color color;
if (NS_WARN_IF(FAILED(uiSettings->UIElementColor(*knownType, &color)))) {
return Nothing();
}
return Some(NS_RGBA(color.R, color.G, color.B, color.A));
#else
return Nothing();
#endif
}
bool WindowsUIUtils::ComputeOverlayScrollbars() {
#ifndef __MINGW32__
if (!IsWin11OrLater()) {
// While in theory Windows 10 supports overlay scrollbar settings, it's off
// by default and it's untested whether our Win10 scrollbar drawing code
// deals with it properly.
return false;
}
if (!StaticPrefs::widget_windows_overlay_scrollbars_enabled()) {
return false;
}
ComPtr<IInspectable> settings = GetUISettings();
if (NS_WARN_IF(!settings)) {
return false;
}
ComPtr<IUISettings5> uiSettings5;
if (NS_WARN_IF(FAILED(settings.As(&uiSettings5)))) {
return false;
}
boolean autoHide = false;
if (NS_WARN_IF(FAILED(uiSettings5->get_AutoHideScrollBars(&autoHide)))) {
return false;
}
return autoHide;
#else
return false;
#endif
}
double WindowsUIUtils::ComputeTextScaleFactor() {
#ifndef __MINGW32__
ComPtr<IInspectable> settings = GetUISettings();
if (NS_WARN_IF(!settings)) {
return 1.0;
}
ComPtr<IUISettings2> uiSettings2;
if (NS_WARN_IF(FAILED(settings.As(&uiSettings2)))) {
return false;
}
double scaleFactor = 1.0;
if (NS_WARN_IF(FAILED(uiSettings2->get_TextScaleFactor(&scaleFactor)))) {
return 1.0;
}
return scaleFactor;
#else
return 1.0;
#endif
}
bool WindowsUIUtils::ComputeTransparencyEffects() {
constexpr bool kDefault = true;
#ifndef __MINGW32__
ComPtr<IInspectable> settings = GetUISettings();
if (NS_WARN_IF(!settings)) {
return kDefault;
}
ComPtr<IUISettings4> uiSettings4;
if (NS_WARN_IF(FAILED(settings.As(&uiSettings4)))) {
return kDefault;
}
boolean transparencyEffects = kDefault;
if (NS_WARN_IF(FAILED(
uiSettings4->get_AdvancedEffectsEnabled(&transparencyEffects)))) {
return kDefault;
}
return transparencyEffects;
#else
return kDefault;
#endif
}
void WindowsUIUtils::UpdateInWin10TabletMode() {
if (IsWin11OrLater()) {
// (In theory we should never get here under Win11; but it's conceivable
// that there are third-party applications that try to "assist" legacy Win10
// apps by synthesizing Win10-style tablet-mode notifications.)
return;
}
// The getter below relies on querying a HWND which is affine to the main
// thread; its operation is not known to be thread-safe, let alone lock-free.
MOZ_DIAGNOSTIC_ASSERT(NS_IsMainThread());
#ifndef __MINGW32__
nsresult rv;
nsCOMPtr<nsIWindowMediator> winMediator(
do_GetService(NS_WINDOWMEDIATOR_CONTRACTID, &rv));
if (NS_FAILED(rv)) {
return;
}
nsCOMPtr<nsIWidget> widget;
nsCOMPtr<mozIDOMWindowProxy> navWin;
rv = winMediator->GetMostRecentBrowserWindow(getter_AddRefs(navWin));
if (NS_FAILED(rv) || !navWin) {
return;
}
nsPIDOMWindowOuter* win = nsPIDOMWindowOuter::From(navWin);
widget = widget::WidgetUtils::DOMWindowToWidget(win);
if (!widget) {
return;
}
HWND winPtr = (HWND)widget->GetNativeData(NS_NATIVE_WINDOW);
NS_ENSURE_TRUE_VOID(winPtr);
ComPtr<IUIViewSettingsInterop> uiViewSettingsInterop;
HRESULT hr = GetActivationFactory(
HStringReference(RuntimeClass_Windows_UI_ViewManagement_UIViewSettings)
.Get(),
&uiViewSettingsInterop);
if (FAILED(hr)) {
return;
}
ComPtr<IUIViewSettings> uiViewSettings;
hr = uiViewSettingsInterop->GetForWindow(winPtr,
IID_PPV_ARGS(&uiViewSettings));
if (FAILED(hr)) {
return;
}
UserInteractionMode mode;
hr = uiViewSettings->get_UserInteractionMode(&mode);
if (FAILED(hr)) {
return;
}
TabletModeState oldTabletModeState = sInTabletModeState;
sInTabletModeState = mode == UserInteractionMode_Touch ? TabletModeState::On
: TabletModeState::Off;
if (sInTabletModeState != oldTabletModeState) {
nsCOMPtr<nsIObserverService> observerService =
mozilla::services::GetObserverService();
observerService->NotifyObservers(nullptr, "tablet-mode-change",
sInTabletModeState == TabletModeState::On
? u"win10-tablet-mode"
: u"normal-mode");
}
#endif
}
// Cache: whether this device is believed to be capable of entering tablet mode.
//
// Meaningful only if `IsWin11OrLater()`.
static Maybe<bool> sIsTabletCapable = Nothing();
// The UUID of a GPIO pin which indicates whether or not a convertible device is
// currently in tablet mode. (We copy `DEFINE_GUID`'s implementation here since
// we can't control `INITGUID`, which the canonical one is conditional on.)
//
#define MOZ_DEFINE_GUID(name, l, w1, w2, b1, b2, b3, b4, b5, b6, b7, b8) \
EXTERN_C const GUID DECLSPEC_SELECTANY name = { \
l, w1, w2, {b1, b2, b3, b4, b5, b6, b7, b8}}
/* 317fc439-3f77-41c8-b09e-08ad63272aa3 */ MOZ_DEFINE_GUID(
MOZ_GUID_GPIOBUTTONS_LAPTOPSLATE_INTERFACE, 0x317fc439, 0x3f77, 0x41c8,
0xb0, 0x9e, 0x08, 0xad, 0x63, 0x27, 0x2a, 0xa3);
void WindowsUIUtils::UpdateInWin11TabletMode() {
// The OS-level getter itself is threadsafe, but we retain the main-thread
// restriction to parallel the Win10 getter's (presumed) restriction.
MOZ_DIAGNOSTIC_ASSERT(NS_IsMainThread());
if (!IsWin11OrLater()) {
// We should ordinarily never reach this point in Win10 -- but there may
// well be some third-party application out there that synthesizes Win11-
// style tablet-mode notifications.
return;
}
// *** *** *** WARNING: RELIANCE ON UNDOCUMENTED BEHAVIOR *** *** ***
//
// Windows 10's `UserInteractionMode` API is no longer useful under Windows
// 11: it always returns `UserInteractionMode_Mouse`.
//
// The documented API to query whether we're in tablet mode (alt.: "slate
// mode") under Windows 11 is `::GetSystemMetrics(SM_CONVERTIBLESLATEMODE)`.
// This returns 0 if we are in slate mode and 1 otherwise... except on devices
// where tablet mode is unavailable (such as desktops), in which case it
// returns 0 unconditionally.
//
// Unfortunately, there is no documented API to determine whether
// `SM_CONVERTIBLESLATEMODE` is `0` because the device is currently in slate
// mode or because the device can never be in slate mode.
//
// As such, we follow Chromium's lead here, and attempt to determine
// heuristically whether that API is going to return anything sensible.
// (Indeed, the heuristic below is in large part taken from Chromium.)
if (sIsTabletCapable.isNothing()) {
bool const heuristic = ([]() -> bool {
// If the user has set the relevant pref to override our tablet-detection
// heuristics, go with that.
switch (StaticPrefs::widget_windows_tablet_detection_override()) {
case -1:
MOZ_LOG(gTabletModeLog, LogLevel::Info,
("TCH: override detected (-1)"));
return false;
case 1:
MOZ_LOG(gTabletModeLog, LogLevel::Info,
("TCH: override detected (+1)"));
return true;
default:
break;
}
// If ::GSM(SM_CONVERTIBLESLATEMODE) is _currently_ nonzero, we must be on
// a system that does somnething with SM_CONVERTIBLESLATEMODE, so we can
// trust it.
if (::GetSystemMetrics(SM_CONVERTIBLESLATEMODE) != 0) {
MOZ_LOG(gTabletModeLog, LogLevel::Info,
("TCH: SM_CONVERTIBLESLATEMODE != 0"));
return true;
}
// If the device does not support touch it can't possibly be a tablet.
if (GetSystemMetrics(SM_MAXIMUMTOUCHES) == 0) {
MOZ_LOG(gTabletModeLog, LogLevel::Info,
("TCH: SM_MAXIMUMTOUCHES != 0"));
return false;
}
if (MOZ_LOG_TEST(gTabletModeLog, LogLevel::Info)) {
[&]() -> void {
// Check to see if a particular registry key [1] exists, and what its
// value is.
//
// This is not presently considered reliable, as some
// non-tablet-capable devices have this registry key present, but not
// set to 1 -- see bug 1932775, as well as comments in Chromium [2].
//
// This is probably strictly redundant with the CONVERTIBLESLATEMODE
// check above, so we only even look at it if we're logging.
//
namespace Reg = mozilla::widget::WinRegistry;
Reg::Key key(
HKEY_LOCAL_MACHINE,
uR"(System\CurrentControlSet\Control\PriorityControl)"_ns,
Reg::KeyMode::QueryValue);
if (!key) {
MOZ_LOG(gTabletModeLog, LogLevel::Info,
("TCH: \"PriorityControl\" registry path not found"));
}
auto const valueType = key.GetValueType(u"ConvertibleSlateMode"_ns);
if (valueType == Reg::ValueType::None) {
MOZ_LOG(gTabletModeLog, LogLevel::Info,
("TCH: 'ConvertibleSlateMode' not found"));
return;
}
if (auto const val =
key.GetValueAsDword(u"ConvertibleSlateMode"_ns)) {
MOZ_LOG(gTabletModeLog, LogLevel::Info,
("TCH: 'ConvertibleSlateMode' found; value is 0x%08" PRIX32,
*val));
} else {
MOZ_LOG(gTabletModeLog, LogLevel::Info,
("TCH: 'ConvertibleSlateMode' found, but not a DWORD "
"(type=0x%08" PRIX32 ")",
uint32_t(valueType)));
}
}();
}
// If the device has this GUID mapped to a GPIO pin, it's almost certainly
// tablet-capable. (It's not certain whether the converse is true.)
//
bool const hasTabletGpioPin = [&]() {
ULONG size = 0;
GUID guid{MOZ_GUID_GPIOBUTTONS_LAPTOPSLATE_INTERFACE};
CONFIGRET const err = ::CM_Get_Device_Interface_List_SizeW(
&size, &guid, nullptr, CM_GET_DEVICE_INTERFACE_LIST_PRESENT);
// (The next step at this point would usually be to call the function
// "::CM_Get_Device_Interface_ListW()" -- but we don't care where the
// associated device interface is actually mapped to; we only care
// whether it's mapped at all.
//
// For our purposes, a zero-length null-terminated string doesn't count
// as "present".)
return err == CR_SUCCESS && size > 1;
}();
if (hasTabletGpioPin) {
MOZ_LOG(gTabletModeLog, LogLevel::Info,
("TCH: relevant GPIO interface found"));
return true;
}
// If the device has no rotation sensor, it's _probably_ not a convertible
// device. (There are exceptions! See bug 1918292.)
AR_STATE rotation_state;
if (HRESULT hr = ::GetAutoRotationState(&rotation_state); !FAILED(hr)) {
if ((rotation_state & (AR_NOT_SUPPORTED | AR_LAPTOP | AR_NOSENSOR)) !=
0) {
MOZ_LOG(gTabletModeLog, LogLevel::Info, ("TCH: no rotation sensor"));
return false;
}
}
// If the device returns `PlatformRoleSlate` for its POWER_PLATFORM_ROLE,
// it's probably tablet-capable.
//
// The converse is known to be false; the tablet-capable Dell Inspiron 14
// 7445 2-in-1 returns `PlatformRoleMobile`.
//
// (Chromium checks for PlatformRoleMobile as well, but (e.g.) a Dell XPS
// 15 9500 also returns `PlatformRoleMobile` despite *not* being tablet-
// capable.)
POWER_PLATFORM_ROLE const role =
mozilla::widget::WinUtils::GetPowerPlatformRole();
if (role == PlatformRoleSlate) {
MOZ_LOG(gTabletModeLog, LogLevel::Info,
("TCH: role == PlatformRoleSlate"));
return true;
}
// Without some specific indicator of tablet-capability, assume that we're
// tablet-incapable.
MOZ_LOG(gTabletModeLog, LogLevel::Info,
("TCH: no indication; falling through"));
return false;
})();
MOZ_LOG(gTabletModeLog, LogLevel::Info,
("tablet-capability heuristic: %s", heuristic ? "true" : "false"));
sIsTabletCapable = Some(heuristic);
// If we appear not to be tablet-capable, don't bother doing the check.
// (We also don't need to send a signal.)
if (!heuristic) {
sInTabletModeState = TabletModeState::Off;
return;
}
} else if (sIsTabletCapable == Some(false)) {
// We've been in here before, and the heuristic came back false... but
// somehow, we've just gotten an update for the convertible-slate-mode
// state.
//
// Clearly the heuristic was wrong!
//
// TODO(rkraesig): should we add telemetry to see how often this gets hit?
MOZ_LOG(gTabletModeLog, LogLevel::Warning,
("recv'd update signal after false heuristic run; reversing"));
sIsTabletCapable = Some(true);
}
// at this point, we must be tablet-capable
MOZ_ASSERT(sIsTabletCapable == Some(true));
TabletModeState const oldState = sInTabletModeState;
bool const isTableting =
::GetSystemMetrics(SM_CONVERTIBLESLATEMODE) == 0 /* [sic!] */;
sInTabletModeState = isTableting ? TabletModeState::On : TabletModeState::Off;
if (oldState != sInTabletModeState) {
nsCOMPtr<nsIObserverService> observerService =
mozilla::services::GetObserverService();
observerService->NotifyObservers(nullptr, "tablet-mode-change",
sInTabletModeState == TabletModeState::On
? u"win11-tablet-mode"
: u"normal-mode");
}
}
#ifndef __MINGW32__
struct HStringDeleter {
using pointer = HSTRING;
void operator()(pointer aString) { WindowsDeleteString(aString); }
};
using HStringUniquePtr = UniquePtr<HSTRING, HStringDeleter>;
Result<HStringUniquePtr, HRESULT> ConvertToWindowsString(
const nsAString& aStr) {
HSTRING rawStr;
HRESULT hr = WindowsCreateString(PromiseFlatString(aStr).get(), aStr.Length(),
&rawStr);
if (FAILED(hr)) {
return Err(hr);
}
return HStringUniquePtr(rawStr);
}
static Result<Ok, nsresult> RequestShare(
std::function<HRESULT(IDataRequestedEventArgs* pArgs)>&& aCallback) {
HWND hwnd = GetForegroundWindow();
if (!hwnd) {
return Err(NS_ERROR_FAILURE);
}
ComPtr<IDataTransferManagerInterop> dtmInterop;
ComPtr<IDataTransferManager> dtm;
HRESULT hr = RoGetActivationFactory(
HStringReference(
RuntimeClass_Windows_ApplicationModel_DataTransfer_DataTransferManager)
.Get(),
IID_PPV_ARGS(&dtmInterop));
if (FAILED(hr) ||
FAILED(dtmInterop->GetForWindow(hwnd, IID_PPV_ARGS(&dtm)))) {
return Err(NS_ERROR_FAILURE);
}
auto callback = Callback<
ITypedEventHandler<DataTransferManager*, DataRequestedEventArgs*>>(
[aCallback](IDataTransferManager*,
IDataRequestedEventArgs* pArgs) -> HRESULT {
return aCallback(pArgs);
});
EventRegistrationToken dataRequestedToken;
if (FAILED(dtm->add_DataRequested(callback.Get(), &dataRequestedToken)) ||
FAILED(dtmInterop->ShowShareUIForWindow(hwnd))) {
return Err(NS_ERROR_FAILURE);
}
return Ok();
}
static Result<Ok, nsresult> AddShareEventListeners(
const RefPtr<mozilla::media::Refcountable<MozPromiseHolder<SharePromise>>>&
aPromiseHolder,
const ComPtr<IDataPackage>& aDataPackage) {
ComPtr<IDataPackage3> spDataPackage3;
if (FAILED(aDataPackage.As(&spDataPackage3))) {
return Err(NS_ERROR_FAILURE);
}
auto completedCallback =
Callback<ITypedEventHandler<DataPackage*, ShareCompletedEventArgs*>>(
[aPromiseHolder](IDataPackage*,
IShareCompletedEventArgs*) -> HRESULT {
aPromiseHolder->Resolve(true, __func__);
return S_OK;
});
EventRegistrationToken dataRequestedToken;
if (FAILED(spDataPackage3->add_ShareCompleted(completedCallback.Get(),
&dataRequestedToken))) {
return Err(NS_ERROR_FAILURE);
}
ComPtr<IDataPackage4> spDataPackage4;
if (SUCCEEDED(aDataPackage.As(&spDataPackage4))) {
// Use SharedCanceled API only on supported versions of Windows
// So that the older ones can still use ShareUrl()
auto canceledCallback =
Callback<ITypedEventHandler<DataPackage*, IInspectable*>>(
[aPromiseHolder](IDataPackage*, IInspectable*) -> HRESULT {
aPromiseHolder->Reject(NS_ERROR_FAILURE, __func__);
return S_OK;
});
if (FAILED(spDataPackage4->add_ShareCanceled(canceledCallback.Get(),
&dataRequestedToken))) {
return Err(NS_ERROR_FAILURE);
}
}
return Ok();
}
#endif
RefPtr<SharePromise> WindowsUIUtils::Share(nsAutoString aTitle,
nsAutoString aText,
nsAutoString aUrl) {
auto promiseHolder = MakeRefPtr<
mozilla::media::Refcountable<MozPromiseHolder<SharePromise>>>();
RefPtr<SharePromise> promise = promiseHolder->Ensure(__func__);
#ifndef __MINGW32__
auto result = RequestShare([promiseHolder, title = std::move(aTitle),
text = std::move(aText), url = std::move(aUrl)](
IDataRequestedEventArgs* pArgs) {
ComPtr<IDataRequest> spDataRequest;
ComPtr<IDataPackage> spDataPackage;
ComPtr<IDataPackage2> spDataPackage2;
ComPtr<IDataPackagePropertySet> spDataPackageProperties;
if (FAILED(pArgs->get_Request(&spDataRequest)) ||
FAILED(spDataRequest->get_Data(&spDataPackage)) ||
FAILED(spDataPackage.As(&spDataPackage2)) ||
FAILED(spDataPackage->get_Properties(&spDataPackageProperties))) {
promiseHolder->Reject(NS_ERROR_FAILURE, __func__);
return E_FAIL;
}
/*
* Windows always requires a title, and an empty string does not work.
* Thus we trick the API by passing a whitespace when we have no title.
*/
auto wTitle = ConvertToWindowsString((title.IsVoid() || title.Length() == 0)
? nsAutoString(u" "_ns)
: title);
if (wTitle.isErr() ||
FAILED(spDataPackageProperties->put_Title(wTitle.unwrap().get()))) {
promiseHolder->Reject(NS_ERROR_FAILURE, __func__);
return E_FAIL;
}
// Assign even if empty, as Windows requires some data to share
auto wText = ConvertToWindowsString(text);
if (wText.isErr() || FAILED(spDataPackage->SetText(wText.unwrap().get()))) {
promiseHolder->Reject(NS_ERROR_FAILURE, __func__);
return E_FAIL;
}
if (!url.IsVoid()) {
auto wUrl = ConvertToWindowsString(url);
if (wUrl.isErr()) {
promiseHolder->Reject(NS_ERROR_FAILURE, __func__);
return wUrl.unwrapErr();
}
ComPtr<IUriRuntimeClassFactory> uriFactory;
ComPtr<IUriRuntimeClass> uri;
auto hr = GetActivationFactory(
HStringReference(RuntimeClass_Windows_Foundation_Uri).Get(),
&uriFactory);
if (FAILED(hr) ||
FAILED(uriFactory->CreateUri(wUrl.unwrap().get(), &uri)) ||
FAILED(spDataPackage2->SetWebLink(uri.Get()))) {
promiseHolder->Reject(NS_ERROR_FAILURE, __func__);
return E_FAIL;
}
}
if (!StaticPrefs::widget_windows_share_wait_action_enabled()) {
promiseHolder->Resolve(true, __func__);
} else if (AddShareEventListeners(promiseHolder, spDataPackage).isErr()) {
promiseHolder->Reject(NS_ERROR_FAILURE, __func__);
return E_FAIL;
}
return S_OK;
});
if (result.isErr()) {
promiseHolder->Reject(result.unwrapErr(), __func__);
}
#else
promiseHolder->Reject(NS_ERROR_FAILURE, __func__);
#endif
return promise;
}
NS_IMETHODIMP
WindowsUIUtils::ShareUrl(const nsAString& aUrlToShare,
const nsAString& aShareTitle) {
nsAutoString text;
text.SetIsVoid(true);
WindowsUIUtils::Share(nsAutoString(aShareTitle), text,
nsAutoString(aUrlToShare));
return NS_OK;
}
// Definitions pulled from the Windows App SDK
namespace winrt {
namespace Microsoft {
namespace UI {
struct WindowId {
uint64_t value;
};
namespace Windowing {
MIDL_INTERFACE("3C315C24-D540-5D72-B518-B226B83627CB")
IAppWindowStatics : IInspectable {
virtual int32_t __stdcall Create(void**) noexcept = 0;
virtual int32_t __stdcall CreateWithPresenter(void*, void**) noexcept = 0;
virtual int32_t __stdcall CreateWithPresenterAndOwner(
void*, struct winrt::Microsoft::UI::WindowId, void**) noexcept = 0;
virtual int32_t __stdcall GetFromWindowId(
struct winrt::Microsoft::UI::WindowId, void**) noexcept = 0;
};
MIDL_INTERFACE("CFA788B3-643B-5C5E-AD4E-321D48A82ACD")
IAppWindow : IInspectable {
virtual int32_t __stdcall get_Id(
struct struct_Microsoft_UI_WindowId*) noexcept = 0;
virtual int32_t __stdcall get_IsShownInSwitchers(bool*) noexcept = 0;
virtual int32_t __stdcall put_IsShownInSwitchers(bool) noexcept = 0;
virtual int32_t __stdcall get_IsVisible(bool*) noexcept = 0;
virtual int32_t __stdcall get_OwnerWindowId(
struct struct_Microsoft_UI_WindowId*) noexcept = 0;
virtual int32_t __stdcall get_Position(
struct struct_Windows_Graphics_PointInt32*) noexcept = 0;
virtual int32_t __stdcall get_Presenter(void**) noexcept = 0;
virtual int32_t __stdcall get_Size(
struct struct_Windows_Graphics_SizeInt32*) noexcept = 0;
virtual int32_t __stdcall get_Title(void**) noexcept = 0;
virtual int32_t __stdcall put_Title(void*) noexcept = 0;
virtual int32_t __stdcall get_TitleBar(void**) noexcept = 0;
virtual int32_t __stdcall Destroy() noexcept = 0;
virtual int32_t __stdcall Hide() noexcept = 0;
virtual int32_t __stdcall Move(
struct struct_Windows_Graphics_PointInt32) noexcept = 0;
virtual int32_t __stdcall MoveAndResize(
struct struct_Windows_Graphics_RectInt32) noexcept = 0;
virtual int32_t __stdcall MoveAndResizeRelativeToDisplayArea(
struct struct_Windows_Graphics_RectInt32, void*) noexcept = 0;
virtual int32_t __stdcall Resize(
struct struct_Windows_Graphics_SizeInt32) noexcept = 0;
virtual int32_t __stdcall SetIcon(void*) noexcept = 0;
virtual int32_t __stdcall SetIconWithIconId(
struct struct_Microsoft_UI_IconId) noexcept = 0;
virtual int32_t __stdcall SetPresenter(void*) noexcept = 0;
virtual int32_t __stdcall SetPresenterByKind(int32_t) noexcept = 0;
virtual int32_t __stdcall Show() noexcept = 0;
virtual int32_t __stdcall ShowWithActivation(bool) noexcept = 0;
virtual int32_t __stdcall add_Changed(void*, void**) noexcept = 0;
virtual int32_t __stdcall remove_Changed(void*) noexcept = 0;
virtual int32_t __stdcall add_Closing(void*, void**) noexcept = 0;
virtual int32_t __stdcall remove_Closing(void*) noexcept = 0;
virtual int32_t __stdcall add_Destroying(void*, void**) noexcept = 0;
virtual int32_t __stdcall remove_Destroying(void*) noexcept = 0;
};
MIDL_INTERFACE("5574EFA2-C91C-5700-A363-539C71A7AAF4")
IAppWindowTitleBar : IInspectable {
virtual int32_t __stdcall get_BackgroundColor(void**) noexcept = 0;
virtual int32_t __stdcall put_BackgroundColor(void*) noexcept = 0;
virtual int32_t __stdcall get_ButtonBackgroundColor(void**) noexcept = 0;
virtual int32_t __stdcall put_ButtonBackgroundColor(void*) noexcept = 0;
virtual int32_t __stdcall get_ButtonForegroundColor(void**) noexcept = 0;
virtual int32_t __stdcall put_ButtonForegroundColor(void*) noexcept = 0;
virtual int32_t __stdcall get_ButtonHoverBackgroundColor(void**) noexcept = 0;
virtual int32_t __stdcall put_ButtonHoverBackgroundColor(void*) noexcept = 0;
virtual int32_t __stdcall get_ButtonHoverForegroundColor(void**) noexcept = 0;
virtual int32_t __stdcall put_ButtonHoverForegroundColor(void*) noexcept = 0;
virtual int32_t __stdcall get_ButtonInactiveBackgroundColor(
void**) noexcept = 0;
virtual int32_t __stdcall put_ButtonInactiveBackgroundColor(
void*) noexcept = 0;
virtual int32_t __stdcall get_ButtonInactiveForegroundColor(
void**) noexcept = 0;
virtual int32_t __stdcall put_ButtonInactiveForegroundColor(
void*) noexcept = 0;
virtual int32_t __stdcall get_ButtonPressedBackgroundColor(
void**) noexcept = 0;
virtual int32_t __stdcall put_ButtonPressedBackgroundColor(
void*) noexcept = 0;
virtual int32_t __stdcall get_ButtonPressedForegroundColor(
void**) noexcept = 0;
virtual int32_t __stdcall put_ButtonPressedForegroundColor(
void*) noexcept = 0;
virtual int32_t __stdcall get_ExtendsContentIntoTitleBar(bool*) noexcept = 0;
virtual int32_t __stdcall put_ExtendsContentIntoTitleBar(bool) noexcept = 0;
virtual int32_t __stdcall get_ForegroundColor(void**) noexcept = 0;
virtual int32_t __stdcall put_ForegroundColor(void*) noexcept = 0;
virtual int32_t __stdcall get_Height(int32_t*) noexcept = 0;
virtual int32_t __stdcall get_IconShowOptions(int32_t*) noexcept = 0;
virtual int32_t __stdcall put_IconShowOptions(int32_t) noexcept = 0;
virtual int32_t __stdcall get_InactiveBackgroundColor(void**) noexcept = 0;
virtual int32_t __stdcall put_InactiveBackgroundColor(void*) noexcept = 0;
virtual int32_t __stdcall get_InactiveForegroundColor(void**) noexcept = 0;
virtual int32_t __stdcall put_InactiveForegroundColor(void*) noexcept = 0;
virtual int32_t __stdcall get_LeftInset(int32_t*) noexcept = 0;
virtual int32_t __stdcall get_RightInset(int32_t*) noexcept = 0;
virtual int32_t __stdcall ResetToDefault() noexcept = 0;
virtual int32_t __stdcall SetDragRectangles(
uint32_t, struct struct_Windows_Graphics_RectInt32*) noexcept = 0;
};
MIDL_INTERFACE("86FAED38-748A-5B4B-9CCF-3BA0496C9041")
IAppWindowTitleBar2 : IInspectable {
virtual int32_t __stdcall get_PreferredHeightOption(int32_t*) noexcept = 0;
virtual int32_t __stdcall put_PreferredHeightOption(int32_t) noexcept = 0;
};
enum TitleBarHeightOption : int32_t {
Standard = 0,
Tall = 1,
Collapsed = 2,
};
} // namespace Windowing
} // namespace UI
} // namespace Microsoft
} // namespace winrt
#ifndef __MINGW32__
static StaticRefPtr<winrt::Microsoft::UI::Windowing::IAppWindowStatics>
sAppWindowStatics;
using GetWindowIdFromWindowType = HRESULT(STDAPICALLTYPE*)(
HWND hwnd, struct winrt::Microsoft::UI::WindowId* windowId);
static GetWindowIdFromWindowType sGetWindowIdFromWindowProc = nullptr;
// Returns whether initialization succeeded
[[nodiscard]] static bool InitializeWindowsAppSDKStatics() {
MOZ_ASSERT(NS_IsMainThread());
// This function is needed to avoid drawing the titlebar buttons
// when the Windows mica backdrop is enabled. (bug 1934040)
// If it isn't possible for mica to be enabled, we don't need to do anything.
// The Windows App SDK that we use here doesn't support older versions of
// Windows 10 that Firefox does.
if (!widget::WinUtils::MicaAvailable()) {
MOZ_LOG(
gWindowsLog, LogLevel::Info,
("Skipping SetIsTitlebarCollapsed() because mica is not available"));
return false;
}
// This pref is only false on certain test runs (most notably
// opt-talos-xperf), the Windows App SDK fails calling
// DCompositionCreateDevice3() with ERROR_ACCESS_DENIED, and the code assumes
// it is going to succeed so it proceeds to crash deferencing null.
//
// We're not exactly sure why this is happening right now, but I'm pretty sure
// it's specific to how we're running Firefox on those test runs, and
// I don't think any users will run into this. So those tests pass the
// --disable-windowsappsdk command line argument to avoid using
// the Windows App SDK.
if (!StaticPrefs::widget_windows_windowsappsdk_enabled()) {
MOZ_LOG(gWindowsLog, LogLevel::Info,
("Skipping SetIsTitlebarCollapsed() because "
"widget.windows.windowsappsdk.enabled is false"));
return false;
}
if (!sGetWindowIdFromWindowProc) {
HMODULE frameworkUdkModule =
::LoadLibraryW(L"Microsoft.Internal.FrameworkUdk.dll");
if (!frameworkUdkModule) {
uint32_t lastError = static_cast<uint32_t>(::GetLastError());
MOZ_LOG(gWindowsLog, LogLevel::Error,
("Skipping SetIsTitlebarCollapsed() because "
"Microsoft.Internal.FrameworkUdk.dll could not be loaded, "
"error=%" PRIu32,
lastError));
MOZ_ASSERT_UNREACHABLE(
"Microsoft.Internal.FrameworkUdk.dll could not be loaded");
return false;
}
sGetWindowIdFromWindowProc = (GetWindowIdFromWindowType)::GetProcAddress(
frameworkUdkModule, "Windowing_GetWindowIdFromWindow");
}
if (!sGetWindowIdFromWindowProc) {
MOZ_LOG(gWindowsLog, LogLevel::Error,
("Skipping SetIsTitlebarCollapsed() because "
"GetWindowIdFromWindow could not be found in "
"Microsoft.Internal.FrameworkUdk.dll, error=%" PRIu32,
static_cast<uint32_t>(::GetLastError())));
MOZ_ASSERT_UNREACHABLE(
"GetWindowIdFromWindow could not be found in "
"Microsoft.Internal.FrameworkUdk.dll");
return false;
}
if (!sAppWindowStatics) {
HMODULE uiWindowingModule = ::LoadLibraryW(L"Microsoft.UI.Windowing.dll");
if (!uiWindowingModule) {
MOZ_LOG(gWindowsLog, LogLevel::Error,
("Skipping SetIsTitlebarCollapsed() because "
"Microsoft.UI.Windowing.dll could not be loaded, error=%" PRIu32,
static_cast<uint32_t>(::GetLastError())));
MOZ_ASSERT_UNREACHABLE("Microsoft.UI.Windowing.dll could not be loaded");
return false;
}
using DllGetActivationFactoryType = HRESULT(WINAPI*)(
HSTRING activatableClassId, IActivationFactory * *factory);
auto dllGetActivationFactoryProc =
(DllGetActivationFactoryType)::GetProcAddress(
uiWindowingModule, "DllGetActivationFactory");
if (!dllGetActivationFactoryProc) {
MOZ_LOG(gWindowsLog, LogLevel::Error,
("Skipping SetIsTitlebarCollapsed() because "
"DllGetActivationFactory could not be found in "
"Microsoft.UI.Windowing.dll, error=%" PRIu32,
static_cast<uint32_t>(::GetLastError())));
MOZ_ASSERT_UNREACHABLE(
"DllGetActivationFactory could not be found in "
"Microsoft.UI.Windowing.dll");
return false;
}
ComPtr<IActivationFactory> activationFactory;
HRESULT hr = dllGetActivationFactoryProc(
HStringReference(L"Microsoft.UI.Windowing.AppWindow").Get(),
activationFactory.GetAddressOf());
if (FAILED(hr)) {
MOZ_LOG(gWindowsLog, LogLevel::Error,
("Skipping SetIsTitlebarCollapsed() because "
"DllGetActivationFactory failed, hr=%" PRIX32,
static_cast<uint32_t>(hr)));
MOZ_ASSERT_UNREACHABLE("DllGetActivationFactory failed");
return false;
}
RefPtr<winrt::Microsoft::UI::Windowing::IAppWindowStatics> appWindowStatics;
hr = activationFactory->QueryInterface(
__uuidof(winrt::Microsoft::UI::Windowing::IAppWindowStatics),
getter_AddRefs(appWindowStatics));
if (FAILED(hr) || !appWindowStatics) {
MOZ_LOG(gWindowsLog, LogLevel::Error,
("Skipping SetIsTitlebarCollapsed() because "
"IAppWindowStatics could not be acquired, hr=%" PRIX32,
static_cast<uint32_t>(hr)));
MOZ_ASSERT_UNREACHABLE("IAppWindowStatics could not be acquired");
return false;
}
sAppWindowStatics = std::move(appWindowStatics);
}
if (!sAppWindowStatics) {
MOZ_LOG(gWindowsLog, LogLevel::Error,
("Skipping SetIsTitlebarCollapsed() because "
"IAppWindowStatics could not be acquired"));
MOZ_ASSERT_UNREACHABLE("IAppWindowStatics could not be acquired");
return false;
}
return true;
}
static RefPtr<winrt::Microsoft::UI::Windowing::IAppWindow>
GetAppWindowForWindow(HWND aWnd) {
if (!InitializeWindowsAppSDKStatics()) {
return nullptr;
}
// Retrieve the WindowId that corresponds to hWnd.
struct winrt::Microsoft::UI::WindowId windowId{0};
HRESULT hr = sGetWindowIdFromWindowProc(aWnd, &windowId);
if (FAILED(hr) || windowId.value == 0) {
MOZ_LOG(gWindowsLog, LogLevel::Error,
("Skipping SetIsTitlebarCollapsed() because "
"GetWindowIdFromWindow failed, hr=0x%" PRIX32,
static_cast<uint32_t>(hr)));
MOZ_ASSERT_UNREACHABLE("GetWindowIdFromWindow failed");
return nullptr;
}
RefPtr<winrt::Microsoft::UI::Windowing::IAppWindow> appWindow;
sAppWindowStatics->GetFromWindowId(windowId, getter_AddRefs(appWindow));
return appWindow;
}
#endif
void WindowsUIUtils::AssociateWithWinAppSDK(HWND aWnd) {
#ifndef __MINGW32__
RefPtr win = GetAppWindowForWindow(aWnd);
(void)win;
#endif
}
void WindowsUIUtils::SetIsTitlebarCollapsed(HWND aWnd, bool aIsCollapsed) {
#ifndef __MINGW32__
// The Microsoft documentation says that we should be checking
// AppWindowTitleBar::IsCustomizationSupported() before calling methods
// on the title bar. However, it also says that customization is fully
// supported since Windows App SDK v1.2 on Windows 11, and Mica is only
// available on Windows 11, so it should be safe to skip this check.
RefPtr appWindow = GetAppWindowForWindow(aWnd);
if (!appWindow) {
MOZ_LOG(gWindowsLog, LogLevel::Warning,
("Skipping SetIsTitlebarCollapsed() because "
"IAppWindow could not be acquired from window id"));
return;
}
RefPtr<winrt::Microsoft::UI::Windowing::IAppWindowTitleBar> titleBar;
HRESULT hr = appWindow->get_TitleBar(getter_AddRefs(titleBar));
if (FAILED(hr) || !titleBar) {
// Hedge our bets here and don't assert because it's possible this
// is a weird sort of window or something.
MOZ_LOG(gWindowsLog, LogLevel::Warning,
("Skipping SetIsTitlebarCollapsed() because "
"titlebar could not be acquired, hr=%" PRIX32,
static_cast<uint32_t>(hr)));
return;
}
if (aIsCollapsed) {
hr = titleBar->put_ExtendsContentIntoTitleBar(aIsCollapsed);
} else {
hr = titleBar->ResetToDefault();
}
if (FAILED(hr)) {
MOZ_LOG(gWindowsLog, LogLevel::Error,
("Skipping SetIsTitlebarCollapsed() because "
"put_ExtendsContentIntoTitleBar failed, hr=%" PRIX32,
static_cast<uint32_t>(hr)));
MOZ_ASSERT_UNREACHABLE("put_ExtendsContentIntoTitleBar failed");
return;
}
if (aIsCollapsed) {
// PreferredHeightOption is only valid if ExtendsContentIntoTitleBar is true
RefPtr<winrt::Microsoft::UI::Windowing::IAppWindowTitleBar2> titleBar2;
hr = titleBar->QueryInterface(
__uuidof(winrt::Microsoft::UI::Windowing::IAppWindowTitleBar2),
(void**)getter_AddRefs(titleBar2));
if (FAILED(hr) || !titleBar2) {
MOZ_LOG(gWindowsLog, LogLevel::Error,
("Skipping SetIsTitlebarCollapsed() because "
"IAppWindowTitleBar2 could not be acquired, hr=%" PRIX32,
static_cast<uint32_t>(hr)));
MOZ_ASSERT_UNREACHABLE("IAppWindowTitleBar2 could not be acquired");
return;
}
hr = titleBar2->put_PreferredHeightOption(
winrt::Microsoft::UI::Windowing::TitleBarHeightOption::Collapsed);
if (FAILED(hr)) {
MOZ_LOG(gWindowsLog, LogLevel::Error,
("Skipping SetIsTitlebarCollapsed() because "
"put_PreferredHeightOption failed, hr=%" PRIX32,
static_cast<uint32_t>(hr)));
MOZ_ASSERT_UNREACHABLE("put_PreferredHeightOption failed");
return;
}
}
#endif
}