基本输入检测
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#include "RawInputDetector.h"
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#include <QCoreApplication>
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#include <QDebug>
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#include <QGuiApplication>
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#ifdef _WIN32
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#include <windows.h>
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#include <hidusage.h>
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namespace {
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constexpr UINT kRidInput = 0x10000003;
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constexpr USHORT kE0Flag = 0x02;
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constexpr USHORT kMouseMoveAbsolute = 0x0001;
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constexpr USHORT kMouseLeftDown = 0x0001;
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constexpr USHORT kMouseLeftUp = 0x0002;
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constexpr USHORT kMouseRightDown = 0x0004;
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constexpr USHORT kMouseRightUp = 0x0008;
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constexpr USHORT kMouseMiddleDown = 0x0010;
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constexpr USHORT kMouseMiddleUp = 0x0020;
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constexpr USHORT kMouseX1Down = 0x0040;
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constexpr USHORT kMouseX1Up = 0x0080;
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constexpr USHORT kMouseX2Down = 0x0100;
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constexpr USHORT kMouseX2Up = 0x0200;
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constexpr USHORT kMouseWheel = 0x0400;
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}
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#endif
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namespace FancyInput {
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RawInputDetector::RawInputDetector(QObject *parent)
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: QObject(parent)
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{
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m_rawBuffer.resize(64);
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}
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RawInputDetector::~RawInputDetector()
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{
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stop();
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}
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bool RawInputDetector::start(QWindow *targetWindow)
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{
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#ifdef _WIN32
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if (m_running || targetWindow == nullptr || targetWindow->winId() == 0)
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return false;
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if (!registerDevices(reinterpret_cast<HWND>(targetWindow->winId())))
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return false;
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m_targetWindow = targetWindow;
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m_pressedKeys.clear();
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QCoreApplication::instance()->installNativeEventFilter(this);
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m_running = true;
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return true;
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#else
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Q_UNUSED(targetWindow)
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return false;
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#endif
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}
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void RawInputDetector::stop()
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{
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#ifdef _WIN32
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if (!m_running)
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return;
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QCoreApplication::instance()->removeNativeEventFilter(this);
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unregisterDevices();
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m_pressedKeys.clear();
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m_targetWindow = nullptr;
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m_running = false;
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#endif
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}
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bool RawInputDetector::nativeEventFilter(const QByteArray &eventType,
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void *message,
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qintptr *result)
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{
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Q_UNUSED(result)
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#ifdef _WIN32
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if (!m_running || eventType != "windows_generic_MSG" || message == nullptr)
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return false;
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const MSG *msg = static_cast<const MSG *>(message);
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if (msg->message == WM_INPUT)
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handleRawInput(reinterpret_cast<HRAWINPUT>(msg->lParam));
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#else
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Q_UNUSED(eventType)
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Q_UNUSED(message)
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#endif
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return false;
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}
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#ifdef _WIN32
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bool RawInputDetector::registerDevices(HWND targetHandle)
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{
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RAWINPUTDEVICE devices[2] = {};
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devices[0].usUsagePage = HID_USAGE_PAGE_GENERIC;
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devices[0].usUsage = HID_USAGE_GENERIC_KEYBOARD;
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devices[0].dwFlags = RIDEV_INPUTSINK;
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devices[0].hwndTarget = targetHandle;
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devices[1].usUsagePage = HID_USAGE_PAGE_GENERIC;
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devices[1].usUsage = HID_USAGE_GENERIC_MOUSE;
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devices[1].dwFlags = RIDEV_INPUTSINK;
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devices[1].hwndTarget = targetHandle;
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return RegisterRawInputDevices(devices, 2, sizeof(RAWINPUTDEVICE)) != FALSE;
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}
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void RawInputDetector::unregisterDevices()
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{
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RAWINPUTDEVICE devices[2] = {};
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devices[0].usUsagePage = HID_USAGE_PAGE_GENERIC;
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devices[0].usUsage = HID_USAGE_GENERIC_KEYBOARD;
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devices[0].dwFlags = RIDEV_REMOVE;
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devices[1].usUsagePage = HID_USAGE_PAGE_GENERIC;
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devices[1].usUsage = HID_USAGE_GENERIC_MOUSE;
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devices[1].dwFlags = RIDEV_REMOVE;
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RegisterRawInputDevices(devices, 2, sizeof(RAWINPUTDEVICE));
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}
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void RawInputDetector::handleRawInput(HRAWINPUT rawInput)
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{
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UINT size = 0;
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if (GetRawInputData(rawInput, RID_INPUT, nullptr, &size,
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sizeof(RAWINPUTHEADER)) == static_cast<UINT>(-1) || size == 0)
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return;
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if (m_rawBuffer.size() < static_cast<qsizetype>(size))
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m_rawBuffer.resize(static_cast<qsizetype>(size));
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if (GetRawInputData(rawInput, RID_INPUT, m_rawBuffer.data(), &size,
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sizeof(RAWINPUTHEADER)) == static_cast<UINT>(-1))
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return;
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const auto *input = reinterpret_cast<const RAWINPUT *>(m_rawBuffer.constData());
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if (input->header.dwType == RIM_TYPEKEYBOARD)
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handleKeyboard(input->data.keyboard);
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else if (input->header.dwType == RIM_TYPEMOUSE)
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handleMouse(input->data.mouse);
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}
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void RawInputDetector::handleKeyboard(const RAWKEYBOARD &keyboard)
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{
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const bool keyDown = keyboard.Message == WM_KEYDOWN || keyboard.Message == WM_SYSKEYDOWN;
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const bool keyUp = keyboard.Message == WM_KEYUP || keyboard.Message == WM_SYSKEYUP;
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if (!keyDown && !keyUp)
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return;
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const bool extended = (keyboard.Flags & kE0Flag) != 0;
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const quint16 virtualKey = keyboard.VKey;
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const FipKeys key = mapKey(virtualKey, keyboard.MakeCode, extended);
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const FipRawKeys rawKey = mapRawKey(virtualKey, keyboard.MakeCode, extended);
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if (keyDown) {
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if (m_pressedKeys.contains(virtualKey))
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return;
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m_pressedKeys.insert(virtualKey);
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}
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if (keyUp)
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m_pressedKeys.remove(virtualKey);
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const bool ctrl = (GetAsyncKeyState(VK_LCONTROL) & 0x8000) || (GetAsyncKeyState(VK_RCONTROL) & 0x8000);
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const bool shift = (GetAsyncKeyState(VK_LSHIFT) & 0x8000) || (GetAsyncKeyState(VK_RSHIFT) & 0x8000);
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const bool alt = (GetAsyncKeyState(VK_LMENU) & 0x8000) || (GetAsyncKeyState(VK_RMENU) & 0x8000);
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const bool win = (GetAsyncKeyState(VK_LWIN) & 0x8000) || (GetAsyncKeyState(VK_RWIN) & 0x8000);
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const bool numLock = (GetKeyState(VK_NUMLOCK) & 1) != 0;
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const bool capsLock = (GetKeyState(VK_CAPITAL) & 1) != 0;
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const bool scrollLock = (GetKeyState(VK_SCROLL) & 1) != 0;
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if (keyDown)
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emit keyPressed(key, rawKey, virtualKey, keyboard.MakeCode, extended, ctrl, shift, alt, win, numLock, capsLock, scrollLock);
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else
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emit keyReleased(key, rawKey, virtualKey, keyboard.MakeCode, extended, ctrl, shift, alt, win, numLock, capsLock, scrollLock);
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}
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void RawInputDetector::handleMouse(const RAWMOUSE &mouse)
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{
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const USHORT flags = mouse.usButtonFlags;
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if (flags & kMouseLeftDown) emit mouseButtonChanged(MouseCodeType::Left, true);
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if (flags & kMouseLeftUp) emit mouseButtonChanged(MouseCodeType::Left, false);
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if (flags & kMouseRightDown) emit mouseButtonChanged(MouseCodeType::Right, true);
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if (flags & kMouseRightUp) emit mouseButtonChanged(MouseCodeType::Right, false);
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if (flags & kMouseMiddleDown) emit mouseButtonChanged(MouseCodeType::Middle, true);
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if (flags & kMouseMiddleUp) emit mouseButtonChanged(MouseCodeType::Middle, false);
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if (flags & kMouseX1Down) emit mouseButtonChanged(MouseCodeType::XButton1, true);
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if (flags & kMouseX1Up) emit mouseButtonChanged(MouseCodeType::XButton1, false);
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if (flags & kMouseX2Down) emit mouseButtonChanged(MouseCodeType::XButton2, true);
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if (flags & kMouseX2Up) emit mouseButtonChanged(MouseCodeType::XButton2, false);
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if (flags & kMouseWheel)
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emit mouseWheelMoved(static_cast<qint16>(mouse.usButtonData));
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if ((mouse.usFlags & kMouseMoveAbsolute) == 0 && (mouse.lLastX != 0 || mouse.lLastY != 0))
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emit mouseMoved(mouse.lLastX, mouse.lLastY);
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}
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#endif
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FipKeys RawInputDetector::mapKey(quint16 virtualKey, quint16 scanCode, bool extended)
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{
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if (virtualKey == VK_PAUSE) return FipKeys::Pause;
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if (virtualKey == VK_SNAPSHOT) return FipKeys::PrintScreen;
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if (virtualKey == VK_RETURN && scanCode == 0x1C) return extended ? FipKeys::NumpadEnter : FipKeys::Enter;
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if (virtualKey == VK_CONTROL && scanCode == 0x1D) return extended ? FipKeys::RControlKey : FipKeys::LControlKey;
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if (virtualKey == VK_MENU && scanCode == 0x38) return extended ? FipKeys::RMenu : FipKeys::LMenu;
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if (virtualKey == VK_SHIFT) {
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if (scanCode == 0x2A) return FipKeys::LShiftKey;
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if (scanCode == 0x36) return FipKeys::RShiftKey;
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}
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if (virtualKey == VK_LWIN) return FipKeys::LWin;
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if (virtualKey == VK_RWIN) return FipKeys::RWin;
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if (virtualKey == VK_APPS) return FipKeys::Apps;
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if (extended) {
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switch (scanCode) {
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case 0x48: return FipKeys::Up;
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case 0x4B: return FipKeys::Left;
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case 0x4D: return FipKeys::Right;
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case 0x50: return FipKeys::Down;
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case 0x47: return FipKeys::Home;
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case 0x4F: return FipKeys::End;
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case 0x49: return FipKeys::PageUp;
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case 0x51: return FipKeys::PageDown;
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case 0x52: return FipKeys::Insert;
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case 0x53: return FipKeys::Delete;
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case 0x35: return FipKeys::Divide;
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default: break;
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}
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}
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return static_cast<FipKeys>(virtualKey);
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}
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FipRawKeys RawInputDetector::mapRawKey(quint16 virtualKey, quint16 scanCode, bool extended)
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{
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if (virtualKey == VK_PAUSE) return FipRawKeys::Pause;
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if (virtualKey == VK_SNAPSHOT) return FipRawKeys::PrintScreen;
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if (virtualKey == VK_CONTROL && scanCode == 0x1D) return extended ? FipRawKeys::RControlKey : FipRawKeys::LControlKey;
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if (virtualKey == VK_MENU && scanCode == 0x38) return extended ? FipRawKeys::RMenu : FipRawKeys::LMenu;
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if (virtualKey == VK_RETURN && scanCode == 0x1C) return extended ? FipRawKeys::NumpadEnter : FipRawKeys::Enter;
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if (virtualKey == VK_LWIN) return FipRawKeys::LWin;
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if (virtualKey == VK_RWIN) return FipRawKeys::RWin;
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if (virtualKey == VK_APPS) return FipRawKeys::Apps;
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const quint32 code = extended ? (0xE000u | scanCode) : scanCode;
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return static_cast<FipRawKeys>(code);
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}
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} // namespace FancyInput
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