| // Copyright 2013 The Flutter Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #include "flutter/shell/platform/windows/system_utils.h" |
| |
| #include <Windows.h> |
| |
| #include <sstream> |
| |
| #include "third_party/cppwinrt/generated/winrt/Windows.Foundation.Collections.h" |
| #include "third_party/cppwinrt/generated/winrt/Windows.System.UserProfile.h" |
| #include "third_party/cppwinrt/generated/winrt/Windows.UI.ViewManagement.h" |
| #include "third_party/cppwinrt/generated/winrt/Windows.UI.h" |
| |
| #include "flutter/fml/platform/win/wstring_conversion.h" |
| |
| namespace flutter { |
| |
| std::vector<LanguageInfo> GetPreferredLanguageInfo() { |
| std::vector<std::wstring> languages = GetPreferredLanguages(); |
| std::vector<LanguageInfo> language_info; |
| for (auto language : languages) { |
| language_info.push_back(ParseLanguageName(language)); |
| } |
| return language_info; |
| } |
| |
| std::vector<std::wstring> GetPreferredLanguages() { |
| std::vector<std::wstring> languages; |
| auto platform_languages = winrt::Windows::System::UserProfile:: |
| GlobalizationPreferences::Languages(); |
| for (const auto& platform_language : platform_languages) { |
| languages.push_back(std::wstring{platform_language}); |
| } |
| return languages; |
| } |
| |
| LanguageInfo ParseLanguageName(std::wstring language_name) { |
| LanguageInfo info; |
| |
| // Split by '-', discarding any suplemental language info (-x-foo). |
| std::vector<std::string> components; |
| std::istringstream stream(fml::WideStringToUtf8(language_name)); |
| std::string component; |
| while (getline(stream, component, '-')) { |
| if (component == "x") { |
| break; |
| } |
| components.push_back(component); |
| } |
| |
| // Determine which components are which. |
| info.language = components[0]; |
| if (components.size() == 3) { |
| info.script = components[1]; |
| info.region = components[2]; |
| } else if (components.size() == 2) { |
| // A script code will always be four characters long. |
| if (components[1].size() == 4) { |
| info.script = components[1]; |
| } else { |
| info.region = components[1]; |
| } |
| } |
| return info; |
| } |
| |
| std::wstring GetUserTimeFormat() { |
| // Rather than do the call-allocate-call-free dance, just use a sufficiently |
| // large buffer to handle any reasonable time format string. |
| const int kBufferSize = 100; |
| wchar_t buffer[kBufferSize]; |
| if (::GetLocaleInfoEx(LOCALE_NAME_USER_DEFAULT, LOCALE_STIMEFORMAT, buffer, |
| kBufferSize) == 0) { |
| return std::wstring(); |
| } |
| return std::wstring(buffer, kBufferSize); |
| } |
| |
| bool Prefer24HourTime(std::wstring time_format) { |
| return time_format.find(L"H") != std::wstring::npos; |
| } |
| |
| std::wstring GetPreferredBrightness() { |
| winrt::Windows::UI::ViewManagement::UISettings ui_settings; |
| auto background_color = ui_settings.GetColorValue( |
| winrt::Windows::UI::ViewManagement::UIColorType::Background); |
| // Assuming that Windows return `Colors::Black` when being dark theme. |
| if (background_color == winrt::Windows::UI::Colors::Black()) { |
| return kPlatformBrightnessDark; |
| } else { |
| return kPlatformBrightnessLight; |
| } |
| } |
| |
| } // namespace flutter |