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GiantsTools/Sdk/External/DirectXTK/Src/Mouse.cpp
Nick Blakely 71b675f5cb Update to new SDK.
2021-01-23 15:40:09 -08:00

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//--------------------------------------------------------------------------------------
// File: Mouse.cpp
//
// Copyright (c) Microsoft Corporation. All rights reserved.
// Licensed under the MIT License.
//
// http://go.microsoft.com/fwlink/?LinkId=248929
// http://go.microsoft.com/fwlink/?LinkID=615561
//--------------------------------------------------------------------------------------
#include "pch.h"
#include "Mouse.h"
#include "PlatformHelpers.h"
using namespace DirectX;
using Microsoft::WRL::ComPtr;
#if defined(WINAPI_FAMILY) && (WINAPI_FAMILY == WINAPI_FAMILY_GAMES)
#include <GameInput.h>
//======================================================================================
// Win32 + GameInput implementation
//======================================================================================
//
// Call this static function from your Window Message Procedure
//
// LRESULT CALLBACK WndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
// {
// switch (message)
// {
// case WM_ACTIVATEAPP:
// case WM_MOUSEMOVE:
// case WM_LBUTTONDOWN:
// case WM_LBUTTONUP:
// case WM_RBUTTONDOWN:
// case WM_RBUTTONUP:
// case WM_MBUTTONDOWN:
// case WM_MBUTTONUP:
// case WM_MOUSEWHEEL:
// case WM_XBUTTONDOWN:
// case WM_XBUTTONUP:
// Mouse::ProcessMessage(message, wParam, lParam);
// break;
//
// }
// }
//
class Mouse::Impl
{
public:
explicit Impl(Mouse* owner) noexcept(false) :
mState{},
mOwner(owner),
mIs4k(false),
mConnected(0),
mDeviceToken(0),
mMode(MODE_ABSOLUTE),
mScrollWheelCurrent(0),
mRelativeX(INT64_MAX),
mRelativeY(INT64_MAX),
mRelativeWheelY(INT64_MAX)
{
if (s_mouse)
{
throw std::exception("Mouse is a singleton");
}
s_mouse = this;
ThrowIfFailed(GameInputCreate(mGameInput.GetAddressOf()));
ThrowIfFailed(mGameInput->RegisterDeviceCallback(
nullptr,
GameInputKindMouse,
GameInputDeviceConnected,
GameInputBlockingEnumeration,
this,
OnGameInputDevice,
&mDeviceToken));
mScrollWheelValue.reset(CreateEventEx(nullptr, nullptr, CREATE_EVENT_MANUAL_RESET, EVENT_MODIFY_STATE | SYNCHRONIZE));
if (!mScrollWheelValue)
{
throw std::exception("CreateEventEx");
}
}
Impl(Impl&&) = default;
Impl& operator= (Impl&&) = default;
Impl(Impl const&) = delete;
Impl& operator= (Impl const&) = delete;
~Impl()
{
if (mDeviceToken)
{
if (mGameInput)
{
HRESULT hr = mGameInput->UnregisterCallback(mDeviceToken, UINT64_MAX);
if (FAILED(hr))
{
DebugTrace("ERROR: GameInput::UnregisterCallback [mouse] failed (%08X)", static_cast<unsigned int>(hr));
}
}
mDeviceToken = 0;
}
s_mouse = nullptr;
}
void GetState(State& state) const
{
memcpy(&state, &mState, sizeof(State));
state.positionMode = mMode;
DWORD result = WaitForSingleObjectEx(mScrollWheelValue.get(), 0, FALSE);
if (result == WAIT_FAILED)
throw std::exception("WaitForSingleObjectEx");
if (result == WAIT_OBJECT_0)
{
mScrollWheelCurrent = 0;
}
if (state.positionMode == MODE_RELATIVE)
{
state.x = state.y = 0;
ComPtr<IGameInputReading> reading;
if (SUCCEEDED(mGameInput->GetCurrentReading(GameInputKindMouse, nullptr, reading.GetAddressOf())))
{
GameInputMouseState mouse;
if (reading->GetMouseState(&mouse))
{
state.leftButton = (mouse.buttons & GameInputMouseLeftButton) != 0;
state.middleButton = (mouse.buttons & GameInputMouseMiddleButton) != 0;
state.rightButton = (mouse.buttons & GameInputMouseRightButton) != 0;
state.xButton1 = (mouse.buttons & GameInputMouseButton4) != 0;
state.xButton2 = (mouse.buttons & GameInputMouseButton5) != 0;
if (mRelativeX != INT64_MAX)
{
state.x = static_cast<int>(mouse.positionX - mRelativeX);
state.y = static_cast<int>(mouse.positionY - mRelativeY);
int scrollDelta = static_cast<int>(mouse.wheelY - mRelativeWheelY);
mScrollWheelCurrent += scrollDelta;
}
mRelativeX = mouse.positionX;
mRelativeY = mouse.positionY;
mRelativeWheelY = mouse.wheelY;
}
}
}
state.scrollWheelValue = mScrollWheelCurrent;
}
void ResetScrollWheelValue() noexcept
{
SetEvent(mScrollWheelValue.get());
}
void SetMode(Mode mode)
{
if (mMode == mode)
return;
mMode = mode;
mRelativeX = INT64_MAX;
mRelativeY = INT64_MAX;
mRelativeWheelY = INT64_MAX;
ShowCursor((mode == MODE_ABSOLUTE) ? TRUE : FALSE);
}
bool IsConnected() const noexcept
{
return mConnected > 0;
}
bool IsVisible() const noexcept
{
if (mMode == MODE_RELATIVE)
return false;
CURSORINFO info = { sizeof(CURSORINFO), 0, nullptr, {} };
if (!GetCursorInfo(&info))
return false;
return (info.flags & CURSOR_SHOWING) != 0;
}
void SetVisible(bool visible)
{
if (mMode == MODE_RELATIVE)
return;
CURSORINFO info = { sizeof(CURSORINFO), 0, nullptr, {} };
if (!GetCursorInfo(&info))
{
throw std::exception("GetCursorInfo");
}
bool isvisible = (info.flags & CURSOR_SHOWING) != 0;
if (isvisible != visible)
{
ShowCursor(visible);
}
}
State mState;
Mouse* mOwner;
bool mIs4k;
uint32_t mConnected;
static Mouse::Impl* s_mouse;
private:
ComPtr<IGameInput> mGameInput;
GameInputCallbackToken mDeviceToken;
Mode mMode;
ScopedHandle mScrollWheelValue;
mutable int mScrollWheelCurrent;
mutable int64_t mRelativeX;
mutable int64_t mRelativeY;
mutable int64_t mRelativeWheelY;
friend void Mouse::ProcessMessage(UINT message, WPARAM wParam, LPARAM lParam);
static void CALLBACK OnGameInputDevice(
_In_ GameInputCallbackToken,
_In_ void * context,
_In_ IGameInputDevice *,
_In_ uint64_t,
_In_ GameInputDeviceStatus currentStatus,
_In_ GameInputDeviceStatus) noexcept
{
auto impl = reinterpret_cast<Mouse::Impl*>(context);
if (currentStatus & GameInputDeviceConnected)
{
++impl->mConnected;
}
else if (impl->mConnected > 0)
{
--impl->mConnected;
}
}
};
Mouse::Impl* Mouse::Impl::s_mouse = nullptr;
void Mouse::ProcessMessage(UINT message, WPARAM wParam, LPARAM lParam)
{
auto pImpl = Impl::s_mouse;
if (!pImpl)
return;
DWORD result = WaitForSingleObjectEx(pImpl->mScrollWheelValue.get(), 0, FALSE);
if (result == WAIT_FAILED)
throw std::exception("WaitForSingleObjectEx");
if (result == WAIT_OBJECT_0)
{
pImpl->mScrollWheelCurrent = 0;
}
switch (message)
{
case WM_ACTIVATEAPP:
if (wParam)
{
if (pImpl->mMode == MODE_RELATIVE)
{
pImpl->mRelativeX = INT64_MAX;
pImpl->mRelativeY = INT64_MAX;
ShowCursor(FALSE);
}
}
else
{
memset(&pImpl->mState, 0, sizeof(State));
}
return;
case WM_MOUSEMOVE:
break;
case WM_LBUTTONDOWN:
pImpl->mState.leftButton = true;
break;
case WM_LBUTTONUP:
pImpl->mState.leftButton = false;
break;
case WM_RBUTTONDOWN:
pImpl->mState.rightButton = true;
break;
case WM_RBUTTONUP:
pImpl->mState.rightButton = false;
break;
case WM_MBUTTONDOWN:
pImpl->mState.middleButton = true;
break;
case WM_MBUTTONUP:
pImpl->mState.middleButton = false;
break;
case WM_MOUSEWHEEL:
if (pImpl->mMode == MODE_ABSOLUTE)
{
pImpl->mScrollWheelCurrent += GET_WHEEL_DELTA_WPARAM(wParam);
}
return;
case WM_XBUTTONDOWN:
switch (GET_XBUTTON_WPARAM(wParam))
{
case XBUTTON1:
pImpl->mState.xButton1 = true;
break;
case XBUTTON2:
pImpl->mState.xButton2 = true;
break;
}
break;
case WM_XBUTTONUP:
switch (GET_XBUTTON_WPARAM(wParam))
{
case XBUTTON1:
pImpl->mState.xButton1 = false;
break;
case XBUTTON2:
pImpl->mState.xButton2 = false;
break;
}
break;
default:
// Not a mouse message, so exit
return;
}
if (pImpl->mMode == MODE_ABSOLUTE)
{
// All mouse messages provide a new pointer position
int xPos = static_cast<short>(LOWORD(lParam)); // GET_X_LPARAM(lParam);
int yPos = static_cast<short>(HIWORD(lParam)); // GET_Y_LPARAM(lParam);
if (pImpl->mIs4k)
{
pImpl->mState.x = static_cast<int>(xPos) * 2;
pImpl->mState.y = static_cast<int>(yPos) * 2;
}
else
{
pImpl->mState.x = static_cast<int>(xPos);
pImpl->mState.y = static_cast<int>(yPos);
}
}
}
void Mouse::SetResolution(bool use4k)
{
auto pImpl = Impl::s_mouse;
if (!pImpl)
return;
pImpl->mIs4k = use4k;
}
#elif !defined(WINAPI_FAMILY) || (WINAPI_FAMILY == WINAPI_FAMILY_DESKTOP_APP)
//======================================================================================
// Win32 desktop implementation
//======================================================================================
//
// For a Win32 desktop application, in your window setup be sure to call this method:
//
// m_mouse->SetWindow(hwnd);
//
// And call this static function from your Window Message Procedure
//
// LRESULT CALLBACK WndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
// {
// switch (message)
// {
// case WM_ACTIVATEAPP:
// case WM_INPUT:
// case WM_MOUSEMOVE:
// case WM_LBUTTONDOWN:
// case WM_LBUTTONUP:
// case WM_RBUTTONDOWN:
// case WM_RBUTTONUP:
// case WM_MBUTTONDOWN:
// case WM_MBUTTONUP:
// case WM_MOUSEWHEEL:
// case WM_XBUTTONDOWN:
// case WM_XBUTTONUP:
// case WM_MOUSEHOVER:
// Mouse::ProcessMessage(message, wParam, lParam);
// break;
//
// }
// }
//
class Mouse::Impl
{
public:
explicit Impl(Mouse* owner) noexcept(false) :
mState{},
mOwner(owner),
mWindow(nullptr),
mMode(MODE_ABSOLUTE),
mLastX(0),
mLastY(0),
mRelativeX(INT32_MAX),
mRelativeY(INT32_MAX),
mInFocus(true)
{
if (s_mouse)
{
throw std::exception("Mouse is a singleton");
}
s_mouse = this;
mScrollWheelValue.reset(CreateEventEx(nullptr, nullptr, CREATE_EVENT_MANUAL_RESET, EVENT_MODIFY_STATE | SYNCHRONIZE));
mRelativeRead.reset(CreateEventEx(nullptr, nullptr, CREATE_EVENT_MANUAL_RESET, EVENT_MODIFY_STATE | SYNCHRONIZE));
mAbsoluteMode.reset(CreateEventEx(nullptr, nullptr, 0, EVENT_MODIFY_STATE | SYNCHRONIZE));
mRelativeMode.reset(CreateEventEx(nullptr, nullptr, 0, EVENT_MODIFY_STATE | SYNCHRONIZE));
if (!mScrollWheelValue
|| !mRelativeRead
|| !mAbsoluteMode
|| !mRelativeMode)
{
throw std::exception("CreateEventEx");
}
}
Impl(Impl&&) = default;
Impl& operator= (Impl&&) = default;
Impl(Impl const&) = delete;
Impl& operator= (Impl const&) = delete;
~Impl()
{
s_mouse = nullptr;
}
void GetState(State& state) const
{
memcpy(&state, &mState, sizeof(State));
state.positionMode = mMode;
DWORD result = WaitForSingleObjectEx(mScrollWheelValue.get(), 0, FALSE);
if (result == WAIT_FAILED)
throw std::exception("WaitForSingleObjectEx");
if (result == WAIT_OBJECT_0)
{
state.scrollWheelValue = 0;
}
if (state.positionMode == MODE_RELATIVE)
{
result = WaitForSingleObjectEx(mRelativeRead.get(), 0, FALSE);
if (result == WAIT_FAILED)
throw std::exception("WaitForSingleObjectEx");
if (result == WAIT_OBJECT_0)
{
state.x = 0;
state.y = 0;
}
else
{
SetEvent(mRelativeRead.get());
}
}
}
void ResetScrollWheelValue() noexcept
{
SetEvent(mScrollWheelValue.get());
}
void SetMode(Mode mode)
{
if (mMode == mode)
return;
SetEvent((mode == MODE_ABSOLUTE) ? mAbsoluteMode.get() : mRelativeMode.get());
assert(mWindow != nullptr);
TRACKMOUSEEVENT tme;
tme.cbSize = sizeof(tme);
tme.dwFlags = TME_HOVER;
tme.hwndTrack = mWindow;
tme.dwHoverTime = 1;
if (!TrackMouseEvent(&tme))
{
throw std::exception("TrackMouseEvent");
}
}
bool IsConnected() const noexcept
{
return GetSystemMetrics(SM_MOUSEPRESENT) != 0;
}
bool IsVisible() const noexcept
{
if (mMode == MODE_RELATIVE)
return false;
CURSORINFO info = { sizeof(CURSORINFO), 0, nullptr, {} };
if (!GetCursorInfo(&info))
return false;
return (info.flags & CURSOR_SHOWING) != 0;
}
void SetVisible(bool visible)
{
if (mMode == MODE_RELATIVE)
return;
CURSORINFO info = { sizeof(CURSORINFO), 0, nullptr, {} };
if (!GetCursorInfo(&info))
{
throw std::exception("GetCursorInfo");
}
bool isvisible = (info.flags & CURSOR_SHOWING) != 0;
if (isvisible != visible)
{
ShowCursor(visible);
}
}
void SetWindow(HWND window)
{
if (mWindow == window)
return;
assert(window != nullptr);
RAWINPUTDEVICE Rid;
Rid.usUsagePage = 0x1 /* HID_USAGE_PAGE_GENERIC */;
Rid.usUsage = 0x2 /* HID_USAGE_GENERIC_MOUSE */;
Rid.dwFlags = RIDEV_INPUTSINK;
Rid.hwndTarget = window;
if (!RegisterRawInputDevices(&Rid, 1, sizeof(RAWINPUTDEVICE)))
{
throw std::exception("RegisterRawInputDevices");
}
mWindow = window;
}
State mState;
Mouse* mOwner;
static Mouse::Impl* s_mouse;
private:
HWND mWindow;
Mode mMode;
ScopedHandle mScrollWheelValue;
ScopedHandle mRelativeRead;
ScopedHandle mAbsoluteMode;
ScopedHandle mRelativeMode;
int mLastX;
int mLastY;
int mRelativeX;
int mRelativeY;
bool mInFocus;
friend void Mouse::ProcessMessage(UINT message, WPARAM wParam, LPARAM lParam);
void ClipToWindow() noexcept
{
assert(mWindow != nullptr);
RECT rect;
GetClientRect(mWindow, &rect);
POINT ul;
ul.x = rect.left;
ul.y = rect.top;
POINT lr;
lr.x = rect.right;
lr.y = rect.bottom;
MapWindowPoints(mWindow, nullptr, &ul, 1);
MapWindowPoints(mWindow, nullptr, &lr, 1);
rect.left = ul.x;
rect.top = ul.y;
rect.right = lr.x;
rect.bottom = lr.y;
ClipCursor(&rect);
}
};
Mouse::Impl* Mouse::Impl::s_mouse = nullptr;
void Mouse::SetWindow(HWND window)
{
pImpl->SetWindow(window);
}
void Mouse::ProcessMessage(UINT message, WPARAM wParam, LPARAM lParam)
{
auto pImpl = Impl::s_mouse;
if (!pImpl)
return;
HANDLE events[3] = { pImpl->mScrollWheelValue.get(), pImpl->mAbsoluteMode.get(), pImpl->mRelativeMode.get() };
switch (WaitForMultipleObjectsEx(_countof(events), events, FALSE, 0, FALSE))
{
default:
case WAIT_TIMEOUT:
break;
case WAIT_OBJECT_0:
pImpl->mState.scrollWheelValue = 0;
ResetEvent(events[0]);
break;
case (WAIT_OBJECT_0 + 1):
{
pImpl->mMode = MODE_ABSOLUTE;
ClipCursor(nullptr);
POINT point;
point.x = pImpl->mLastX;
point.y = pImpl->mLastY;
// We show the cursor before moving it to support Remote Desktop
ShowCursor(TRUE);
if (MapWindowPoints(pImpl->mWindow, nullptr, &point, 1))
{
SetCursorPos(point.x, point.y);
}
pImpl->mState.x = pImpl->mLastX;
pImpl->mState.y = pImpl->mLastY;
}
break;
case (WAIT_OBJECT_0 + 2):
{
ResetEvent(pImpl->mRelativeRead.get());
pImpl->mMode = MODE_RELATIVE;
pImpl->mState.x = pImpl->mState.y = 0;
pImpl->mRelativeX = INT32_MAX;
pImpl->mRelativeY = INT32_MAX;
ShowCursor(FALSE);
pImpl->ClipToWindow();
}
break;
case WAIT_FAILED:
throw std::exception("WaitForMultipleObjectsEx");
}
switch (message)
{
case WM_ACTIVATEAPP:
if (wParam)
{
pImpl->mInFocus = true;
if (pImpl->mMode == MODE_RELATIVE)
{
pImpl->mState.x = pImpl->mState.y = 0;
ShowCursor(FALSE);
pImpl->ClipToWindow();
}
}
else
{
int scrollWheel = pImpl->mState.scrollWheelValue;
memset(&pImpl->mState, 0, sizeof(State));
pImpl->mState.scrollWheelValue = scrollWheel;
pImpl->mInFocus = false;
}
return;
case WM_INPUT:
if (pImpl->mInFocus && pImpl->mMode == MODE_RELATIVE)
{
RAWINPUT raw;
UINT rawSize = sizeof(raw);
UINT resultData = GetRawInputData(reinterpret_cast<HRAWINPUT>(lParam), RID_INPUT, &raw, &rawSize, sizeof(RAWINPUTHEADER));
if (resultData == UINT(-1))
{
throw std::exception("GetRawInputData");
}
if (raw.header.dwType == RIM_TYPEMOUSE)
{
if (!(raw.data.mouse.usFlags & MOUSE_MOVE_ABSOLUTE))
{
pImpl->mState.x = raw.data.mouse.lLastX;
pImpl->mState.y = raw.data.mouse.lLastY;
ResetEvent(pImpl->mRelativeRead.get());
}
else if (raw.data.mouse.usFlags & MOUSE_VIRTUAL_DESKTOP)
{
// This is used to make Remote Desktop sessons work
const int width = GetSystemMetrics(SM_CXVIRTUALSCREEN);
const int height = GetSystemMetrics(SM_CYVIRTUALSCREEN);
int x = static_cast<int>((float(raw.data.mouse.lLastX) / 65535.0f) * float(width));
int y = static_cast<int>((float(raw.data.mouse.lLastY) / 65535.0f) * float(height));
if (pImpl->mRelativeX == INT32_MAX)
{
pImpl->mState.x = pImpl->mState.y = 0;
}
else
{
pImpl->mState.x = x - pImpl->mRelativeX;
pImpl->mState.y = y - pImpl->mRelativeY;
}
pImpl->mRelativeX = x;
pImpl->mRelativeY = y;
ResetEvent(pImpl->mRelativeRead.get());
}
}
}
return;
case WM_MOUSEMOVE:
break;
case WM_LBUTTONDOWN:
pImpl->mState.leftButton = true;
break;
case WM_LBUTTONUP:
pImpl->mState.leftButton = false;
break;
case WM_RBUTTONDOWN:
pImpl->mState.rightButton = true;
break;
case WM_RBUTTONUP:
pImpl->mState.rightButton = false;
break;
case WM_MBUTTONDOWN:
pImpl->mState.middleButton = true;
break;
case WM_MBUTTONUP:
pImpl->mState.middleButton = false;
break;
case WM_MOUSEWHEEL:
pImpl->mState.scrollWheelValue += GET_WHEEL_DELTA_WPARAM(wParam);
return;
case WM_XBUTTONDOWN:
switch (GET_XBUTTON_WPARAM(wParam))
{
case XBUTTON1:
pImpl->mState.xButton1 = true;
break;
case XBUTTON2:
pImpl->mState.xButton2 = true;
break;
}
break;
case WM_XBUTTONUP:
switch (GET_XBUTTON_WPARAM(wParam))
{
case XBUTTON1:
pImpl->mState.xButton1 = false;
break;
case XBUTTON2:
pImpl->mState.xButton2 = false;
break;
}
break;
case WM_MOUSEHOVER:
break;
default:
// Not a mouse message, so exit
return;
}
if (pImpl->mMode == MODE_ABSOLUTE)
{
// All mouse messages provide a new pointer position
int xPos = static_cast<short>(LOWORD(lParam)); // GET_X_LPARAM(lParam);
int yPos = static_cast<short>(HIWORD(lParam)); // GET_Y_LPARAM(lParam);
pImpl->mState.x = pImpl->mLastX = xPos;
pImpl->mState.y = pImpl->mLastY = yPos;
}
}
#elif defined(_XBOX_ONE) && (!defined(_TITLE) || (_XDK_VER < 0x42D907D1))
//======================================================================================
// Null device
//======================================================================================
class Mouse::Impl
{
public:
explicit Impl(Mouse* owner) noexcept(false) :
mOwner(owner)
{
if (s_mouse)
{
throw std::exception("Mouse is a singleton");
}
s_mouse = this;
}
~Impl()
{
s_mouse = nullptr;
}
void GetState(State& state) const
{
memset(&state, 0, sizeof(State));
}
void ResetScrollWheelValue() noexcept
{
}
void SetMode(Mode)
{
}
bool IsConnected() const
{
return false;
}
bool IsVisible() const noexcept
{
return false;
}
void SetVisible(bool)
{
}
Mouse* mOwner;
static Mouse::Impl* s_mouse;
};
Mouse::Impl* Mouse::Impl::s_mouse = nullptr;
#else
//======================================================================================
// Windows Store or Universal Windows Platform (UWP) app implementation
//======================================================================================
//
// For a Windows Store app or Universal Windows Platform (UWP) app, add the following to your existing
// application methods:
//
// void App::SetWindow(CoreWindow^ window )
// {
// m_mouse->SetWindow(window);
// }
//
// void App::OnDpiChanged(DisplayInformation^ sender, Object^ args)
// {
// m_mouse->SetDpi(sender->LogicalDpi);
// }
//
#include <Windows.Devices.Input.h>
class Mouse::Impl
{
public:
explicit Impl(Mouse* owner) noexcept(false) :
mState{},
mOwner(owner),
mDPI(96.f),
mMode(MODE_ABSOLUTE),
mPointerPressedToken{},
mPointerReleasedToken{},
mPointerMovedToken{},
mPointerWheelToken{},
mPointerMouseMovedToken{}
{
if (s_mouse)
{
throw std::exception("Mouse is a singleton");
}
s_mouse = this;
mScrollWheelValue.reset(CreateEventEx(nullptr, nullptr, CREATE_EVENT_MANUAL_RESET, EVENT_MODIFY_STATE | SYNCHRONIZE));
mRelativeRead.reset(CreateEventEx(nullptr, nullptr, CREATE_EVENT_MANUAL_RESET, EVENT_MODIFY_STATE | SYNCHRONIZE));
if (!mScrollWheelValue
|| !mRelativeRead)
{
throw std::exception("CreateEventEx");
}
}
~Impl()
{
s_mouse = nullptr;
RemoveHandlers();
}
void GetState(State& state) const
{
memcpy(&state, &mState, sizeof(State));
DWORD result = WaitForSingleObjectEx(mScrollWheelValue.get(), 0, FALSE);
if (result == WAIT_FAILED)
throw std::exception("WaitForSingleObjectEx");
if (result == WAIT_OBJECT_0)
{
state.scrollWheelValue = 0;
}
if (mMode == MODE_RELATIVE)
{
result = WaitForSingleObjectEx(mRelativeRead.get(), 0, FALSE);
if (result == WAIT_FAILED)
throw std::exception("WaitForSingleObjectEx");
if (result == WAIT_OBJECT_0)
{
state.x = 0;
state.y = 0;
}
else
{
SetEvent(mRelativeRead.get());
}
}
state.positionMode = mMode;
}
void ResetScrollWheelValue() noexcept
{
SetEvent(mScrollWheelValue.get());
}
void SetMode(Mode mode)
{
using namespace Microsoft::WRL;
using namespace Microsoft::WRL::Wrappers;
using namespace ABI::Windows::UI::Core;
using namespace ABI::Windows::Foundation;
if (mMode == mode)
return;
ComPtr<ICoreWindowStatic> statics;
HRESULT hr = GetActivationFactory(HStringReference(RuntimeClass_Windows_UI_Core_CoreWindow).Get(), statics.GetAddressOf());
ThrowIfFailed(hr);
ComPtr<ICoreWindow> window;
hr = statics->GetForCurrentThread(window.GetAddressOf());
ThrowIfFailed(hr);
if (mode == MODE_RELATIVE)
{
hr = window->get_PointerCursor(mCursor.ReleaseAndGetAddressOf());
ThrowIfFailed(hr);
hr = window->put_PointerCursor(nullptr);
ThrowIfFailed(hr);
SetEvent(mRelativeRead.get());
mMode = MODE_RELATIVE;
}
else
{
if (!mCursor)
{
ComPtr<ICoreCursorFactory> factory;
hr = GetActivationFactory(HStringReference(RuntimeClass_Windows_UI_Core_CoreCursor).Get(), factory.GetAddressOf());
ThrowIfFailed(hr);
hr = factory->CreateCursor(CoreCursorType_Arrow, 0, mCursor.GetAddressOf());
ThrowIfFailed(hr);
}
hr = window->put_PointerCursor(mCursor.Get());
ThrowIfFailed(hr);
mCursor.Reset();
mMode = MODE_ABSOLUTE;
}
}
bool IsConnected() const
{
using namespace Microsoft::WRL;
using namespace Microsoft::WRL::Wrappers;
using namespace ABI::Windows::Devices::Input;
using namespace ABI::Windows::Foundation;
ComPtr<IMouseCapabilities> caps;
HRESULT hr = RoActivateInstance(HStringReference(RuntimeClass_Windows_Devices_Input_MouseCapabilities).Get(), &caps);
ThrowIfFailed(hr);
INT32 value;
if (SUCCEEDED(caps->get_MousePresent(&value)))
{
return value != 0;
}
return false;
}
bool IsVisible() const noexcept
{
if (mMode == MODE_RELATIVE)
return false;
ComPtr<ABI::Windows::UI::Core::ICoreCursor> cursor;
if (FAILED(mWindow->get_PointerCursor(cursor.GetAddressOf())))
return false;
return cursor != 0;
}
void SetVisible(bool visible)
{
using namespace Microsoft::WRL::Wrappers;
using namespace ABI::Windows::Foundation;
using namespace ABI::Windows::UI::Core;
if (mMode == MODE_RELATIVE)
return;
if (visible)
{
if (!mCursor)
{
ComPtr<ICoreCursorFactory> factory;
HRESULT hr = GetActivationFactory(HStringReference(RuntimeClass_Windows_UI_Core_CoreCursor).Get(), factory.GetAddressOf());
ThrowIfFailed(hr);
hr = factory->CreateCursor(CoreCursorType_Arrow, 0, mCursor.GetAddressOf());
ThrowIfFailed(hr);
}
HRESULT hr = mWindow->put_PointerCursor(mCursor.Get());
ThrowIfFailed(hr);
}
else
{
HRESULT hr = mWindow->put_PointerCursor(nullptr);
ThrowIfFailed(hr);
}
}
void SetWindow(ABI::Windows::UI::Core::ICoreWindow* window)
{
using namespace Microsoft::WRL;
using namespace Microsoft::WRL::Wrappers;
using namespace ABI::Windows::Foundation;
using namespace ABI::Windows::Devices::Input;
if (mWindow.Get() == window)
return;
RemoveHandlers();
mWindow = window;
if (!window)
{
mCursor.Reset();
mMouse.Reset();
return;
}
ComPtr<IMouseDeviceStatics> mouseStatics;
HRESULT hr = GetActivationFactory(HStringReference(RuntimeClass_Windows_Devices_Input_MouseDevice).Get(), mouseStatics.GetAddressOf());
ThrowIfFailed(hr);
hr = mouseStatics->GetForCurrentView(mMouse.ReleaseAndGetAddressOf());
ThrowIfFailed(hr);
typedef __FITypedEventHandler_2_Windows__CDevices__CInput__CMouseDevice_Windows__CDevices__CInput__CMouseEventArgs MouseMovedHandler;
hr = mMouse->add_MouseMoved(Callback<MouseMovedHandler>(MouseMovedEvent).Get(), &mPointerMouseMovedToken);
ThrowIfFailed(hr);
typedef __FITypedEventHandler_2_Windows__CUI__CCore__CCoreWindow_Windows__CUI__CCore__CPointerEventArgs PointerHandler;
auto cb = Callback<PointerHandler>(PointerEvent);
hr = window->add_PointerPressed(cb.Get(), &mPointerPressedToken);
ThrowIfFailed(hr);
hr = window->add_PointerReleased(cb.Get(), &mPointerReleasedToken);
ThrowIfFailed(hr);
hr = window->add_PointerMoved(cb.Get(), &mPointerMovedToken);
ThrowIfFailed(hr);
hr = window->add_PointerWheelChanged(Callback<PointerHandler>(PointerWheel).Get(), &mPointerWheelToken);
ThrowIfFailed(hr);
}
State mState;
Mouse* mOwner;
float mDPI;
static Mouse::Impl* s_mouse;
private:
Mode mMode;
ComPtr<ABI::Windows::UI::Core::ICoreWindow> mWindow;
ComPtr<ABI::Windows::Devices::Input::IMouseDevice> mMouse;
ComPtr<ABI::Windows::UI::Core::ICoreCursor> mCursor;
ScopedHandle mScrollWheelValue;
ScopedHandle mRelativeRead;
EventRegistrationToken mPointerPressedToken;
EventRegistrationToken mPointerReleasedToken;
EventRegistrationToken mPointerMovedToken;
EventRegistrationToken mPointerWheelToken;
EventRegistrationToken mPointerMouseMovedToken;
void RemoveHandlers()
{
if (mWindow)
{
(void)mWindow->remove_PointerPressed(mPointerPressedToken);
mPointerPressedToken.value = 0;
(void)mWindow->remove_PointerReleased(mPointerReleasedToken);
mPointerReleasedToken.value = 0;
(void)mWindow->remove_PointerMoved(mPointerMovedToken);
mPointerMovedToken.value = 0;
(void)mWindow->remove_PointerWheelChanged(mPointerWheelToken);
mPointerWheelToken.value = 0;
}
if (mMouse)
{
(void)mMouse->remove_MouseMoved(mPointerMouseMovedToken);
mPointerMouseMovedToken.value = 0;
}
}
static HRESULT PointerEvent(IInspectable *, ABI::Windows::UI::Core::IPointerEventArgs*args)
{
using namespace ABI::Windows::Foundation;
using namespace ABI::Windows::UI::Input;
using namespace ABI::Windows::Devices::Input;
if (!s_mouse)
return S_OK;
ComPtr<IPointerPoint> currentPoint;
HRESULT hr = args->get_CurrentPoint(currentPoint.GetAddressOf());
ThrowIfFailed(hr);
ComPtr<IPointerDevice> pointerDevice;
hr = currentPoint->get_PointerDevice(pointerDevice.GetAddressOf());
ThrowIfFailed(hr);
PointerDeviceType devType;
hr = pointerDevice->get_PointerDeviceType(&devType);
ThrowIfFailed(hr);
if (devType == PointerDeviceType::PointerDeviceType_Mouse)
{
ComPtr<IPointerPointProperties> props;
hr = currentPoint->get_Properties(props.GetAddressOf());
ThrowIfFailed(hr);
boolean value;
hr = props->get_IsLeftButtonPressed(&value);
ThrowIfFailed(hr);
s_mouse->mState.leftButton = value != 0;
hr = props->get_IsRightButtonPressed(&value);
ThrowIfFailed(hr);
s_mouse->mState.rightButton = value != 0;
hr = props->get_IsMiddleButtonPressed(&value);
ThrowIfFailed(hr);
s_mouse->mState.middleButton = value != 0;
hr = props->get_IsXButton1Pressed(&value);
ThrowIfFailed(hr);
s_mouse->mState.xButton1 = value != 0;
hr = props->get_IsXButton2Pressed(&value);
ThrowIfFailed(hr);
s_mouse->mState.xButton2 = value != 0;
}
if (s_mouse->mMode == MODE_ABSOLUTE)
{
Point pos;
hr = currentPoint->get_Position(&pos);
ThrowIfFailed(hr);
float dpi = s_mouse->mDPI;
s_mouse->mState.x = static_cast<int>(pos.X * dpi / 96.f + 0.5f);
s_mouse->mState.y = static_cast<int>(pos.Y * dpi / 96.f + 0.5f);
}
return S_OK;
}
static HRESULT PointerWheel(IInspectable *, ABI::Windows::UI::Core::IPointerEventArgs*args)
{
using namespace ABI::Windows::Foundation;
using namespace ABI::Windows::UI::Input;
using namespace ABI::Windows::Devices::Input;
if (!s_mouse)
return S_OK;
ComPtr<IPointerPoint> currentPoint;
HRESULT hr = args->get_CurrentPoint(currentPoint.GetAddressOf());
ThrowIfFailed(hr);
ComPtr<IPointerDevice> pointerDevice;
hr = currentPoint->get_PointerDevice(pointerDevice.GetAddressOf());
ThrowIfFailed(hr);
PointerDeviceType devType;
hr = pointerDevice->get_PointerDeviceType(&devType);
ThrowIfFailed(hr);
if (devType == PointerDeviceType::PointerDeviceType_Mouse)
{
ComPtr<IPointerPointProperties> props;
hr = currentPoint->get_Properties(props.GetAddressOf());
ThrowIfFailed(hr);
INT32 value;
hr = props->get_MouseWheelDelta(&value);
ThrowIfFailed(hr);
HANDLE evt = s_mouse->mScrollWheelValue.get();
if (WaitForSingleObjectEx(evt, 0, FALSE) == WAIT_OBJECT_0)
{
s_mouse->mState.scrollWheelValue = 0;
ResetEvent(evt);
}
s_mouse->mState.scrollWheelValue += value;
if (s_mouse->mMode == MODE_ABSOLUTE)
{
Point pos;
hr = currentPoint->get_Position(&pos);
ThrowIfFailed(hr);
float dpi = s_mouse->mDPI;
s_mouse->mState.x = static_cast<int>(pos.X * dpi / 96.f + 0.5f);
s_mouse->mState.y = static_cast<int>(pos.Y * dpi / 96.f + 0.5f);
}
}
return S_OK;
}
static HRESULT MouseMovedEvent(IInspectable *, ABI::Windows::Devices::Input::IMouseEventArgs* args)
{
using namespace ABI::Windows::Devices::Input;
if (!s_mouse)
return S_OK;
if (s_mouse->mMode == MODE_RELATIVE)
{
MouseDelta delta;
HRESULT hr = args->get_MouseDelta(&delta);
ThrowIfFailed(hr);
s_mouse->mState.x = delta.X;
s_mouse->mState.y = delta.Y;
ResetEvent(s_mouse->mRelativeRead.get());
}
return S_OK;
}
};
Mouse::Impl* Mouse::Impl::s_mouse = nullptr;
void Mouse::SetWindow(ABI::Windows::UI::Core::ICoreWindow* window)
{
pImpl->SetWindow(window);
}
void Mouse::SetDpi(float dpi)
{
auto pImpl = Impl::s_mouse;
if (!pImpl)
return;
pImpl->mDPI = dpi;
}
#endif
#pragma warning( disable : 4355 )
// Public constructor.
Mouse::Mouse() noexcept(false)
: pImpl(std::make_unique<Impl>(this))
{
}
// Move constructor.
Mouse::Mouse(Mouse&& moveFrom) noexcept
: pImpl(std::move(moveFrom.pImpl))
{
pImpl->mOwner = this;
}
// Move assignment.
Mouse& Mouse::operator= (Mouse&& moveFrom) noexcept
{
pImpl = std::move(moveFrom.pImpl);
pImpl->mOwner = this;
return *this;
}
// Public destructor.
Mouse::~Mouse()
{
}
Mouse::State Mouse::GetState() const
{
State state;
pImpl->GetState(state);
return state;
}
void Mouse::ResetScrollWheelValue() noexcept
{
pImpl->ResetScrollWheelValue();
}
void Mouse::SetMode(Mode mode)
{
pImpl->SetMode(mode);
}
bool Mouse::IsConnected() const
{
return pImpl->IsConnected();
}
bool Mouse::IsVisible() const noexcept
{
return pImpl->IsVisible();
}
void Mouse::SetVisible(bool visible)
{
pImpl->SetVisible(visible);
}
Mouse& Mouse::Get()
{
if (!Impl::s_mouse || !Impl::s_mouse->mOwner)
throw std::exception("Mouse is a singleton");
return *Impl::s_mouse->mOwner;
}
//======================================================================================
// ButtonStateTracker
//======================================================================================
#define UPDATE_BUTTON_STATE(field) field = static_cast<ButtonState>( ( !!state.field ) | ( ( !!state.field ^ !!lastState.field ) << 1 ) );
void Mouse::ButtonStateTracker::Update(const Mouse::State& state) noexcept
{
UPDATE_BUTTON_STATE(leftButton)
assert((!state.leftButton && !lastState.leftButton) == (leftButton == UP));
assert((state.leftButton && lastState.leftButton) == (leftButton == HELD));
assert((!state.leftButton && lastState.leftButton) == (leftButton == RELEASED));
assert((state.leftButton && !lastState.leftButton) == (leftButton == PRESSED));
UPDATE_BUTTON_STATE(middleButton)
UPDATE_BUTTON_STATE(rightButton)
UPDATE_BUTTON_STATE(xButton1)
UPDATE_BUTTON_STATE(xButton2)
lastState = state;
}
#undef UPDATE_BUTTON_STATE
void Mouse::ButtonStateTracker::Reset() noexcept
{
memset(this, 0, sizeof(ButtonStateTracker));
}
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