659 строки
15 KiB
C++
659 строки
15 KiB
C++
//--------------------------------------------------------------------------------------
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// File: Keyboard.cpp
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//
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// Copyright (c) Microsoft Corporation.
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// Licensed under the MIT License.
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//
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// http://go.microsoft.com/fwlink/?LinkId=248929
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// http://go.microsoft.com/fwlink/?LinkID=615561
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//--------------------------------------------------------------------------------------
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#include "pch.h"
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#include "Keyboard.h"
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#include "PlatformHelpers.h"
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using namespace DirectX;
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using Microsoft::WRL::ComPtr;
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static_assert(sizeof(Keyboard::State) == (256 / 8), "Size mismatch for State");
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#ifdef __clang__
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#pragma clang diagnostic ignored "-Wunused-function"
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#endif
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namespace
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{
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inline void KeyDown(int key, Keyboard::State& state) noexcept
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{
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if (key < 0 || key > 0xfe)
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return;
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auto ptr = reinterpret_cast<uint32_t*>(&state);
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const unsigned int bf = 1u << (key & 0x1f);
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ptr[(key >> 5)] |= bf;
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}
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inline void KeyUp(int key, Keyboard::State& state) noexcept
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{
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if (key < 0 || key > 0xfe)
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return;
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auto ptr = reinterpret_cast<uint32_t*>(&state);
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const unsigned int bf = 1u << (key & 0x1f);
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ptr[(key >> 5)] &= ~bf;
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}
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}
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#if defined(WINAPI_FAMILY) && (WINAPI_FAMILY == WINAPI_FAMILY_GAMES)
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#include <GameInput.h>
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//======================================================================================
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// GameInput
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//======================================================================================
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class Keyboard::Impl
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{
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public:
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Impl(Keyboard* owner) :
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mOwner(owner),
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mConnected(0),
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mDeviceToken(0),
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mKeyState{}
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{
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if (s_keyboard)
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{
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throw std::logic_error("Keyboard is a singleton");
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}
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s_keyboard = this;
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ThrowIfFailed(GameInputCreate(mGameInput.GetAddressOf()));
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ThrowIfFailed(mGameInput->RegisterDeviceCallback(
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nullptr,
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GameInputKindKeyboard,
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GameInputDeviceConnected,
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GameInputBlockingEnumeration,
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this,
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OnGameInputDevice,
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&mDeviceToken));
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}
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Impl(Impl&&) = default;
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Impl& operator= (Impl&&) = default;
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Impl(Impl const&) = delete;
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Impl& operator= (Impl const&) = delete;
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~Impl()
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{
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if (mDeviceToken)
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{
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if (mGameInput)
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{
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if (!mGameInput->UnregisterCallback(mDeviceToken, UINT64_MAX))
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{
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DebugTrace("ERROR: GameInput::UnregisterCallback [keyboard] failed");
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}
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}
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mDeviceToken = 0;
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}
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s_keyboard = nullptr;
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}
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void GetState(State& state) const
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{
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state = {};
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ComPtr<IGameInputReading> reading;
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if (SUCCEEDED(mGameInput->GetCurrentReading(GameInputKindKeyboard, nullptr, reading.GetAddressOf())))
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{
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uint32_t readCount = reading->GetKeyState(c_MaxSimultaneousKeys, mKeyState);
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for (size_t j = 0; j < readCount; ++j)
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{
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int vk = static_cast<int>(mKeyState[j].virtualKey);
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// Workaround for known issues with VK_RSHIFT and VK_NUMLOCK
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if (vk == 0)
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{
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switch (mKeyState[j].scanCode)
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{
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case 0xe036: vk = VK_RSHIFT; break;
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case 0xe045: vk = VK_NUMLOCK; break;
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default: break;
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}
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}
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KeyDown(vk, state);
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}
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}
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}
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void Reset() noexcept
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{
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}
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bool IsConnected() const
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{
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return mConnected > 0;
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}
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Keyboard* mOwner;
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uint32_t mConnected;
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static Keyboard::Impl* s_keyboard;
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private:
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static constexpr size_t c_MaxSimultaneousKeys = 16;
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ComPtr<IGameInput> mGameInput;
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GameInputCallbackToken mDeviceToken;
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mutable GameInputKeyState mKeyState[c_MaxSimultaneousKeys];
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static void CALLBACK OnGameInputDevice(
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_In_ GameInputCallbackToken,
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_In_ void * context,
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_In_ IGameInputDevice *,
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_In_ uint64_t,
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_In_ GameInputDeviceStatus currentStatus,
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_In_ GameInputDeviceStatus) noexcept
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{
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auto impl = reinterpret_cast<Keyboard::Impl*>(context);
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if (currentStatus & GameInputDeviceConnected)
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{
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++impl->mConnected;
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}
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else if (impl->mConnected > 0)
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{
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--impl->mConnected;
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}
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}
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};
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Keyboard::Impl* Keyboard::Impl::s_keyboard = nullptr;
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void Keyboard::ProcessMessage(UINT, WPARAM, LPARAM)
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{
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// GameInput for Keyboard doesn't require Win32 messages, but this simplifies integration.
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}
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#elif defined(USING_COREWINDOW)
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//======================================================================================
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// Windows Store or Universal Windows Platform (UWP) app implementation
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//======================================================================================
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//
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// For a Windows Store app or Universal Windows Platform (UWP) app, add the following:
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//
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// void App::SetWindow(CoreWindow^ window )
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// {
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// m_keyboard->SetWindow(window);
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// }
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//
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#include <Windows.Devices.Input.h>
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class Keyboard::Impl
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{
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public:
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Impl(Keyboard* owner) :
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mState{},
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mOwner(owner),
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mAcceleratorKeyToken{},
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mActivatedToken{}
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{
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if (s_keyboard)
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{
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throw std::logic_error("Keyboard is a singleton");
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}
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s_keyboard = this;
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}
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~Impl()
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{
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s_keyboard = nullptr;
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RemoveHandlers();
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}
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void GetState(State& state) const
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{
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memcpy(&state, &mState, sizeof(State));
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}
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void Reset() noexcept
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{
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memset(&mState, 0, sizeof(State));
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}
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bool IsConnected() const
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{
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using namespace Microsoft::WRL;
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using namespace Microsoft::WRL::Wrappers;
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using namespace ABI::Windows::Devices::Input;
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using namespace ABI::Windows::Foundation;
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ComPtr<IKeyboardCapabilities> caps;
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HRESULT hr = RoActivateInstance(HStringReference(RuntimeClass_Windows_Devices_Input_KeyboardCapabilities).Get(), &caps);
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ThrowIfFailed(hr);
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INT32 value;
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if (SUCCEEDED(caps->get_KeyboardPresent(&value)))
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{
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return value != 0;
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}
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return false;
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}
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void SetWindow(ABI::Windows::UI::Core::ICoreWindow* window)
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{
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using namespace Microsoft::WRL;
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using namespace Microsoft::WRL::Wrappers;
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using namespace ABI::Windows::UI::Core;
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if (mWindow.Get() == window)
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return;
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RemoveHandlers();
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mWindow = window;
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if (!window)
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return;
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typedef __FITypedEventHandler_2_Windows__CUI__CCore__CCoreWindow_Windows__CUI__CCore__CWindowActivatedEventArgs ActivatedHandler;
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HRESULT hr = window->add_Activated(Callback<ActivatedHandler>(Activated).Get(), &mActivatedToken);
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ThrowIfFailed(hr);
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ComPtr<ICoreDispatcher> dispatcher;
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hr = window->get_Dispatcher(dispatcher.GetAddressOf());
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ThrowIfFailed(hr);
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ComPtr<ICoreAcceleratorKeys> keys;
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hr = dispatcher.As(&keys);
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ThrowIfFailed(hr);
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typedef __FITypedEventHandler_2_Windows__CUI__CCore__CCoreDispatcher_Windows__CUI__CCore__CAcceleratorKeyEventArgs AcceleratorKeyHandler;
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hr = keys->add_AcceleratorKeyActivated(Callback<AcceleratorKeyHandler>(AcceleratorKeyEvent).Get(), &mAcceleratorKeyToken);
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ThrowIfFailed(hr);
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}
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State mState;
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Keyboard* mOwner;
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static Keyboard::Impl* s_keyboard;
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private:
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ComPtr<ABI::Windows::UI::Core::ICoreWindow> mWindow;
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EventRegistrationToken mAcceleratorKeyToken;
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EventRegistrationToken mActivatedToken;
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void RemoveHandlers()
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{
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if (mWindow)
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{
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using namespace ABI::Windows::UI::Core;
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ComPtr<ICoreDispatcher> dispatcher;
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HRESULT hr = mWindow->get_Dispatcher(dispatcher.GetAddressOf());
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ThrowIfFailed(hr);
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std::ignore = mWindow->remove_Activated(mActivatedToken);
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mActivatedToken.value = 0;
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ComPtr<ICoreAcceleratorKeys> keys;
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hr = dispatcher.As(&keys);
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ThrowIfFailed(hr);
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std::ignore = keys->remove_AcceleratorKeyActivated(mAcceleratorKeyToken);
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mAcceleratorKeyToken.value = 0;
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}
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}
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static HRESULT Activated(IInspectable*, ABI::Windows::UI::Core::IWindowActivatedEventArgs*)
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{
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auto pImpl = Impl::s_keyboard;
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if (!pImpl)
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return S_OK;
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pImpl->Reset();
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return S_OK;
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}
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static HRESULT AcceleratorKeyEvent(IInspectable*, ABI::Windows::UI::Core::IAcceleratorKeyEventArgs* args)
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{
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using namespace ABI::Windows::System;
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using namespace ABI::Windows::UI::Core;
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auto pImpl = Impl::s_keyboard;
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if (!pImpl)
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return S_OK;
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CoreAcceleratorKeyEventType evtType;
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HRESULT hr = args->get_EventType(&evtType);
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ThrowIfFailed(hr);
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bool down = false;
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switch (evtType)
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{
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case CoreAcceleratorKeyEventType_KeyDown:
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case CoreAcceleratorKeyEventType_SystemKeyDown:
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down = true;
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break;
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case CoreAcceleratorKeyEventType_KeyUp:
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case CoreAcceleratorKeyEventType_SystemKeyUp:
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break;
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default:
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return S_OK;
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}
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CorePhysicalKeyStatus status;
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hr = args->get_KeyStatus(&status);
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ThrowIfFailed(hr);
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VirtualKey virtualKey;
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hr = args->get_VirtualKey(&virtualKey);
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ThrowIfFailed(hr);
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int vk = static_cast<int>(virtualKey);
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switch (vk)
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{
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case VK_SHIFT:
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vk = (status.ScanCode == 0x36) ? VK_RSHIFT : VK_LSHIFT;
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if (!down)
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{
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// Workaround to ensure left vs. right shift get cleared when both were pressed at same time
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KeyUp(VK_LSHIFT, pImpl->mState);
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KeyUp(VK_RSHIFT, pImpl->mState);
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}
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break;
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case VK_CONTROL:
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vk = (status.IsExtendedKey) ? VK_RCONTROL : VK_LCONTROL;
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break;
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case VK_MENU:
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vk = (status.IsExtendedKey) ? VK_RMENU : VK_LMENU;
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break;
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}
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if (down)
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{
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KeyDown(vk, pImpl->mState);
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}
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else
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{
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KeyUp(vk, pImpl->mState);
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}
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return S_OK;
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}
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};
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Keyboard::Impl* Keyboard::Impl::s_keyboard = nullptr;
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void Keyboard::SetWindow(ABI::Windows::UI::Core::ICoreWindow* window)
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{
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pImpl->SetWindow(window);
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}
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#else
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//======================================================================================
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// Win32 desktop implementation
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//======================================================================================
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//
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// For a Win32 desktop application, call this function from your Window Message Procedure
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//
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// LRESULT CALLBACK WndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
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// {
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// switch (message)
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// {
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//
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// case WM_ACTIVATE:
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// case WM_ACTIVATEAPP:
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// Keyboard::ProcessMessage(message, wParam, lParam);
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// break;
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//
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// case WM_KEYDOWN:
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// case WM_SYSKEYDOWN:
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// case WM_KEYUP:
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// case WM_SYSKEYUP:
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// Keyboard::ProcessMessage(message, wParam, lParam);
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// break;
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//
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// }
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// }
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//
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class Keyboard::Impl
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{
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public:
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Impl(Keyboard* owner) :
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mState{},
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mOwner(owner)
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{
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if (s_keyboard)
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{
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throw std::logic_error("Keyboard is a singleton");
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}
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s_keyboard = this;
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}
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Impl(Impl&&) = default;
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Impl& operator= (Impl&&) = default;
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Impl(Impl const&) = delete;
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Impl& operator= (Impl const&) = delete;
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~Impl()
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{
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s_keyboard = nullptr;
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}
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void GetState(State& state) const
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{
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memcpy(&state, &mState, sizeof(State));
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}
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void Reset() noexcept
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{
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memset(&mState, 0, sizeof(State));
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}
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bool IsConnected() const
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{
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return true;
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}
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State mState;
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Keyboard* mOwner;
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static Keyboard::Impl* s_keyboard;
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};
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Keyboard::Impl* Keyboard::Impl::s_keyboard = nullptr;
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void Keyboard::ProcessMessage(UINT message, WPARAM wParam, LPARAM lParam)
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{
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auto pImpl = Impl::s_keyboard;
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if (!pImpl)
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return;
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bool down = false;
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switch (message)
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{
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case WM_ACTIVATE:
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case WM_ACTIVATEAPP:
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pImpl->Reset();
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return;
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case WM_KEYDOWN:
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case WM_SYSKEYDOWN:
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down = true;
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break;
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case WM_KEYUP:
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case WM_SYSKEYUP:
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break;
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default:
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return;
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}
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int vk = static_cast<int>(wParam);
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switch (vk)
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{
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case VK_SHIFT:
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vk = static_cast<int>(
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MapVirtualKeyW((static_cast<UINT>(lParam) & 0x00ff0000) >> 16u,
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MAPVK_VSC_TO_VK_EX));
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if (!down)
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{
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// Workaround to ensure left vs. right shift get cleared when both were pressed at same time
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KeyUp(VK_LSHIFT, pImpl->mState);
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KeyUp(VK_RSHIFT, pImpl->mState);
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}
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break;
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case VK_CONTROL:
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vk = (static_cast<UINT>(lParam) & 0x01000000) ? VK_RCONTROL : VK_LCONTROL;
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break;
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case VK_MENU:
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vk = (static_cast<UINT>(lParam) & 0x01000000) ? VK_RMENU : VK_LMENU;
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break;
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}
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if (down)
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{
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KeyDown(vk, pImpl->mState);
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}
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else
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{
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KeyUp(vk, pImpl->mState);
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}
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}
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#endif
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#pragma warning( disable : 4355 )
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// Public constructor.
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Keyboard::Keyboard() noexcept(false)
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: pImpl(std::make_unique<Impl>(this))
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{
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}
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// Move constructor.
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Keyboard::Keyboard(Keyboard&& moveFrom) noexcept
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: pImpl(std::move(moveFrom.pImpl))
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{
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pImpl->mOwner = this;
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}
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// Move assignment.
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Keyboard& Keyboard::operator= (Keyboard&& moveFrom) noexcept
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{
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pImpl = std::move(moveFrom.pImpl);
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pImpl->mOwner = this;
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return *this;
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}
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// Public destructor.
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Keyboard::~Keyboard() = default;
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Keyboard::State Keyboard::GetState() const
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{
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State state;
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pImpl->GetState(state);
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return state;
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}
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void Keyboard::Reset() noexcept
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{
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pImpl->Reset();
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}
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bool Keyboard::IsConnected() const
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{
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return pImpl->IsConnected();
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}
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Keyboard& Keyboard::Get()
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{
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if (!Impl::s_keyboard || !Impl::s_keyboard->mOwner)
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throw std::logic_error("Keyboard singleton not created");
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return *Impl::s_keyboard->mOwner;
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}
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//======================================================================================
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// KeyboardStateTracker
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//======================================================================================
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void Keyboard::KeyboardStateTracker::Update(const State& state) noexcept
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{
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auto currPtr = reinterpret_cast<const uint32_t*>(&state);
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auto prevPtr = reinterpret_cast<const uint32_t*>(&lastState);
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auto releasedPtr = reinterpret_cast<uint32_t*>(&released);
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auto pressedPtr = reinterpret_cast<uint32_t*>(&pressed);
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for (size_t j = 0; j < (256 / 32); ++j)
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{
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*pressedPtr = *currPtr & ~(*prevPtr);
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*releasedPtr = ~(*currPtr) & *prevPtr;
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++currPtr;
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++prevPtr;
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++releasedPtr;
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++pressedPtr;
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}
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lastState = state;
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}
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void Keyboard::KeyboardStateTracker::Reset() noexcept
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{
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memset(this, 0, sizeof(KeyboardStateTracker));
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}
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