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- //
- // App.xaml.cpp
- // App 类的实现。
- //
- #include "pch.h"
- #include "MainPage.xaml.h"
- using namespace SDLPal;
- using namespace Platform;
- using namespace Windows::ApplicationModel;
- using namespace Windows::ApplicationModel::Activation;
- using namespace Windows::Foundation;
- using namespace Windows::Foundation::Collections;
- using namespace Windows::UI::Xaml;
- using namespace Windows::UI::Xaml::Controls;
- using namespace Windows::UI::Xaml::Controls::Primitives;
- using namespace Windows::UI::Xaml::Data;
- using namespace Windows::UI::Xaml::Input;
- using namespace Windows::UI::Xaml::Interop;
- using namespace Windows::UI::Xaml::Media;
- using namespace Windows::UI::Xaml::Media::Animation;
- using namespace Windows::UI::Xaml::Navigation;
- // “空白应用程序”模板在 http://go.microsoft.com/fwlink/?LinkID=391641 上有介绍
- /// <summary>
- /// 初始化单一实例应用程序对象。这是执行的创作代码的第一行,
- /// 已执行,逻辑上等同于 main() 或 WinMain()。
- /// </summary>
- App::App()
- {
- InitializeComponent();
- Suspending += ref new SuspendingEventHandler(this, &App::OnSuspending);
- }
- /// <summary>
- /// 在最终用户正常启动应用程序时调用。将在启动应用程序
- /// 当启动应用程序以打开特定的文件或显示时使用
- /// 搜索结果等
- /// </summary>
- /// <param name="e">有关启动请求和过程的详细信息。</param>
- void App::OnLaunched(LaunchActivatedEventArgs^ e)
- {
- #if _DEBUG
- if (IsDebuggerPresent())
- {
- DebugSettings->EnableFrameRateCounter = true;
- }
- #endif
- auto rootFrame = dynamic_cast<Frame^>(Window::Current->Content);
- // 不要在窗口已包含内容时重复应用程序初始化,
- // 只需确保窗口处于活动状态。
- if (rootFrame == nullptr)
- {
- // 创建一个 Frame 以用作导航上下文并将其与
- // SuspensionManager 键关联
- rootFrame = ref new Frame();
- // TODO: 将此值更改为适合您的应用程序的缓存大小。
- rootFrame->CacheSize = 1;
- //设置默认语言
- rootFrame->Language = Windows::Globalization::ApplicationLanguages::Languages->GetAt(0);
- if (e->PreviousExecutionState == ApplicationExecutionState::Terminated)
- {
- // TODO: 仅当适用时还原保存的会话状态,并安排
- // 还原完成后的最终启动步骤。
- }
- // 将框架放在当前窗口中
- Window::Current->Content = rootFrame;
- }
- if (rootFrame->Content == nullptr)
- {
- // 删除用于启动的旋转门导航。
- if (rootFrame->ContentTransitions != nullptr)
- {
- _transitions = ref new TransitionCollection();
- for (auto transition : rootFrame->ContentTransitions)
- {
- _transitions->Append(transition);
- }
- }
- rootFrame->ContentTransitions = nullptr;
- _firstNavigatedToken = rootFrame->Navigated += ref new NavigatedEventHandler(this, &App::RootFrame_FirstNavigated);
- // 当导航堆栈尚未还原时,导航到第一页,
- // 并通过将所需信息作为导航参数传入来配置
- // 新页面。
- if (!rootFrame->Navigate(MainPage::typeid, e->Arguments))
- {
- throw ref new FailureException("Failed to create initial page");
- }
- }
- // 确保当前窗口处于活动状态
- Window::Current->Activate();
- }
- /// <summary>
- /// 启动应用程序后还原内容转换。
- /// </summary>
- void App::RootFrame_FirstNavigated(Object^ sender, NavigationEventArgs^ e)
- {
- auto rootFrame = safe_cast<Frame^>(sender);
- TransitionCollection^ newTransitions;
- if (_transitions == nullptr)
- {
- newTransitions = ref new TransitionCollection();
- newTransitions->Append(ref new NavigationThemeTransition());
- }
- else
- {
- newTransitions = _transitions;
- }
- rootFrame->ContentTransitions = newTransitions;
- rootFrame->Navigated -= _firstNavigatedToken;
- }
- void SDLPal::App::OnActivated(Windows::ApplicationModel::Activation::IActivatedEventArgs ^ args)
- {
- switch (args->Kind)
- {
- case ActivationKind::PickFolderContinuation:
- {
- static_cast<SDLPal::MainPage^>(Page)->SetPath(safe_cast<IFolderPickerContinuationEventArgs^>(args)->Folder);
- break;
- }
- case ActivationKind::PickFileContinuation:
- {
- auto files = safe_cast<IFileOpenPickerContinuationEventArgs^>(args)->Files;
- if (files->Size > 0) static_cast<SDLPal::MainPage^>(Page)->SetFile(files->GetAt(0));
- break;
- }
- }
- Application::OnActivated(args);
- }
- /// <summary>
- /// 在将要挂起应用程序执行时调用。将保存应用程序状态
- /// 无需知道应用程序会被终止还是会恢复,
- /// 并让内存内容保持不变。
- /// </summary>
- void App::OnSuspending(Object^ sender, SuspendingEventArgs^ e)
- {
- (void) sender; // 未使用的参数
- (void) e; // 未使用的参数
- // TODO: 保存应用程序状态并停止任何后台活动
- }
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