raze/source/platform/win32/i_mouse.cpp

1186 lines
28 KiB
C++

/*
**
**
**---------------------------------------------------------------------------
** Copyright 2005-2016 Randy Heit
** All rights reserved.
**
** Redistribution and use in source and binary forms, with or without
** modification, are permitted provided that the following conditions
** are met:
**
** 1. Redistributions of source code must retain the above copyright
** notice, this list of conditions and the following disclaimer.
** 2. Redistributions in binary form must reproduce the above copyright
** notice, this list of conditions and the following disclaimer in the
** documentation and/or other materials provided with the distribution.
** 3. The name of the author may not be used to endorse or promote products
** derived from this software without specific prior written permission.
**
** THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
** IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
** OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
** IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
** INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
** NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
** THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
**---------------------------------------------------------------------------
**
*/
// HEADER FILES ------------------------------------------------------------
#define WIN32_LEAN_AND_MEAN
#define DIRECTINPUT_VERSION 0x800
#include <windows.h>
#include <dinput.h>
#include "i_input.h"
#include "d_event.h"
#include "d_gui.h"
#include "hardware.h"
#include "menu/menu.h"
#include "i_interface.h"
// MACROS ------------------------------------------------------------------
#define DINPUT_BUFFERSIZE 32
// Compensate for w32api's lack
#ifndef GET_XBUTTON_WPARAM
#define GET_XBUTTON_WPARAM(wParam) (HIWORD(wParam))
#endif
// Only present in Vista SDK, and it probably isn't available with w32api,
// either.
#ifndef WM_MOUSEHWHEEL
#define WM_MOUSEHWHEEL 0x20e
#endif
// TYPES -------------------------------------------------------------------
class FRawMouse : public FMouse
{
public:
FRawMouse();
~FRawMouse();
bool GetDevice();
bool ProcessRawInput(RAWINPUT *rawinput, int code);
bool WndProcHook(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam, LRESULT *result);
void Grab();
void Ungrab();
protected:
bool Grabbed;
POINT UngrabbedPointerPos;
};
class FDInputMouse : public FMouse
{
public:
FDInputMouse();
~FDInputMouse();
bool GetDevice();
void ProcessInput();
bool WndProcHook(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam, LRESULT *result);
void Grab();
void Ungrab();
protected:
LPDIRECTINPUTDEVICE8 Device;
bool Grabbed;
};
class FWin32Mouse : public FMouse
{
public:
FWin32Mouse();
~FWin32Mouse();
bool GetDevice();
void ProcessInput();
bool WndProcHook(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam, LRESULT *result);
void Grab();
void Ungrab();
protected:
POINT UngrabbedPointerPos;
LONG PrevX, PrevY;
bool Grabbed;
};
enum EMouseMode
{
MM_None,
MM_Win32,
MM_DInput,
MM_RawInput
};
// EXTERNAL FUNCTION PROTOTYPES --------------------------------------------
// PUBLIC FUNCTION PROTOTYPES ----------------------------------------------
// PRIVATE FUNCTION PROTOTYPES ---------------------------------------------
static void SetCursorState(bool visible);
static FMouse *CreateWin32Mouse();
static FMouse *CreateDInputMouse();
static FMouse *CreateRawMouse();
static void CenterMouse(int x, int y, LONG *centx, LONG *centy);
// EXTERNAL DATA DECLARATIONS ----------------------------------------------
extern HWND Window;
extern LPDIRECTINPUT8 g_pdi;
extern LPDIRECTINPUT g_pdi3;
extern bool GUICapture;
extern int BlockMouseMove;
// PRIVATE DATA DEFINITIONS ------------------------------------------------
static EMouseMode MouseMode = MM_None;
static FMouse *(*MouseFactory[])() =
{
CreateWin32Mouse,
CreateDInputMouse,
CreateRawMouse
};
// PUBLIC DATA DEFINITIONS -------------------------------------------------
FMouse *Mouse;
bool NativeMouse;
bool CursorState;
CVAR (Bool, use_mouse, true, CVAR_ARCHIVE|CVAR_GLOBALCONFIG)
CVAR (Bool, m_noprescale, false, CVAR_ARCHIVE|CVAR_GLOBALCONFIG)
CVAR (Bool, m_filter, false, CVAR_ARCHIVE|CVAR_GLOBALCONFIG)
CVAR (Bool, m_hidepointer, true, 0)
CUSTOM_CVAR (Int, in_mouse, 0, CVAR_ARCHIVE|CVAR_GLOBALCONFIG|CVAR_NOINITCALL)
{
if (self < 0)
{
self = 0;
}
else if (self > 3)
{
self = 3;
}
else
{
I_StartupMouse();
}
}
// CODE --------------------------------------------------------------------
//==========================================================================
//
// SetCursorState
//
// Ensures the cursor is either visible or invisible.
//
//==========================================================================
static void SetCursorState(bool visible)
{
CursorState = visible || !m_hidepointer;
if (GetForegroundWindow() == Window)
{
if (CursorState)
{
SetCursor((HCURSOR)(intptr_t)GetClassLongPtr(Window, GCLP_HCURSOR));
}
else
{
SetCursor(NULL);
}
}
}
//==========================================================================
//
// CenterMouse
//
// Moves the mouse to the center of the window, but only if the current
// position isn't already in the center.
//
//==========================================================================
static void CenterMouse(int curx, int cury, LONG *centxp, LONG *centyp)
{
RECT rect;
GetWindowRect(Window, &rect);
int centx = (rect.left + rect.right) >> 1;
int centy = (rect.top + rect.bottom) >> 1;
// Reduce the number of WM_MOUSEMOVE messages that get sent
// by only calling SetCursorPos when we really need to.
if (centx != curx || centy != cury)
{
if (centxp != NULL)
{
*centxp = centx;
*centyp = centy;
}
SetCursorPos(centx, centy);
}
}
//==========================================================================
//
// I_CheckNativeMouse
//
// Should we be capturing mouse input, or should we let the OS have normal
// control of it (i.e. native mouse)?
//
//==========================================================================
void I_CheckNativeMouse(bool preferNative, bool eventhandlerresult)
{
bool windowed = (screen == NULL) || !screen->IsFullscreen();
bool want_native;
if (!windowed)
{
// ungrab mouse when in the menu with mouse control on.
want_native = m_use_mouse && (menuactive == MENU_On || menuactive == MENU_OnNoPause);
}
else
{
if ((GetForegroundWindow() != Window) || preferNative || !use_mouse)
{
want_native = true;
}
else if (menuactive == MENU_WaitKey)
{
want_native = false;
}
else
{
bool pauseState = false;
bool captureModeInGame = sysCallbacks && sysCallbacks->CaptureModeInGame && sysCallbacks->CaptureModeInGame();
want_native = ((!m_use_mouse || menuactive != MENU_WaitKey) &&
(!captureModeInGame || GUICapture));
}
}
if (!want_native && eventhandlerresult)
want_native = true;
//Printf ("%d %d %d\n", wantNative, preferNative, NativeMouse);
if (want_native != NativeMouse)
{
if (Mouse != NULL)
{
NativeMouse = want_native;
if (want_native)
{
BlockMouseMove = 3;
Mouse->Ungrab();
}
else
{
Mouse->Grab();
}
}
}
}
//==========================================================================
//
// FMouse - Constructor
//
//==========================================================================
FMouse::FMouse()
{
LastX = LastY = 0;
ButtonState = 0;
WheelMove[0] = 0;
WheelMove[1] = 0;
}
//==========================================================================
//
// FMouse :: PostMouseMove
//
// Posts a mouse movement event, potentially averaging it with the previous
// movement. If there is no movement to post, then no event is generated.
//
//==========================================================================
void FMouse::PostMouseMove(int x, int y)
{
event_t ev = { 0 };
if (m_filter)
{
ev.x = (x + LastX) / 2;
ev.y = (y + LastY) / 2;
}
else
{
ev.x = x;
ev.y = y;
}
LastX = x;
LastY = y;
if (ev.x | ev.y)
{
ev.type = EV_Mouse;
D_PostEvent(&ev);
}
}
//==========================================================================
//
// FMouse :: WheelMoved
//
// Generates events for a wheel move. Events are generated for every
// WHEEL_DELTA units that the wheel has moved. In normal mode, each move
// generates both a key down and a key up event. In GUI mode, only one
// event is generated for each unit of movement. Axis can be 0 for up/down
// or 1 for left/right.
//
//==========================================================================
void FMouse::WheelMoved(int axis, int wheelmove)
{
assert(axis == 0 || axis == 1);
event_t ev = { 0 };
int dir;
WheelMove[axis] += wheelmove;
if (WheelMove[axis] < 0)
{
dir = WHEEL_DELTA;
ev.data1 = KEY_MWHEELDOWN;
}
else
{
dir = -WHEEL_DELTA;
ev.data1 = KEY_MWHEELUP;
}
ev.data1 += axis * 2;
if (!GUICapture)
{
while (abs(WheelMove[axis]) >= WHEEL_DELTA)
{
ev.type = EV_KeyDown;
D_PostEvent(&ev);
ev.type = EV_KeyUp;
D_PostEvent(&ev);
WheelMove[axis] += dir;
}
}
else
{
ev.type = EV_GUI_Event;
ev.subtype = ev.data1 - KEY_MWHEELUP + EV_GUI_WheelUp;
if (GetKeyState(VK_SHIFT) & 0x8000) ev.data3 |= GKM_SHIFT;
if (GetKeyState(VK_CONTROL) & 0x8000) ev.data3 |= GKM_CTRL;
if (GetKeyState(VK_MENU) & 0x8000) ev.data3 |= GKM_ALT;
ev.data1 = 0;
while (abs(WheelMove[axis]) >= WHEEL_DELTA)
{
D_PostEvent(&ev);
WheelMove[axis] += dir;
}
}
}
//==========================================================================
//
// FMouse :: PostButtonEvent
//
// Posts a mouse button up/down event. Down events are always posted. Up
// events will only be sent if the button is currently marked as down.
//
//==========================================================================
void FMouse::PostButtonEvent(int button, bool down)
{
event_t ev = { 0 };
int mask = 1 << button;
ev.data1 = KEY_MOUSE1 + button;
if (down)
{
ButtonState |= mask;
ev.type = EV_KeyDown;
D_PostEvent(&ev);
}
else if (ButtonState & mask)
{
ButtonState &= ~mask;
ev.type = EV_KeyUp;
D_PostEvent(&ev);
}
}
//==========================================================================
//
// FMouse :: ClearButtonState
//
// Sends key up events for all buttons that are currently down and marks
// them as up. Used when focus is lost and we can no longer track up events,
// so get them marked up right away.
//
//==========================================================================
void FMouse::ClearButtonState()
{
if (ButtonState != 0)
{
int i, mask;
event_t ev = { 0 };
ev.type = EV_KeyUp;
for (i = sizeof(ButtonState) * 8, mask = 1; i > 0; --i, mask <<= 1)
{
if (ButtonState & mask)
{
ev.data1 = KEY_MOUSE1 + (int)sizeof(ButtonState) * 8 - i;
D_PostEvent(&ev);
}
}
ButtonState = 0;
}
// Reset mouse wheel accumulation to 0.
WheelMove[0] = 0;
WheelMove[1] = 0;
}
//==========================================================================
//
// CreateRawMouse
//
//==========================================================================
static FMouse *CreateRawMouse()
{
return new FRawMouse;
}
//==========================================================================
//
// FRawMouse - Constructor
//
//==========================================================================
FRawMouse::FRawMouse()
{
Grabbed = false;
SetCursorState(true);
}
//==========================================================================
//
// FRawMouse - Destructor
//
//==========================================================================
FRawMouse::~FRawMouse()
{
Ungrab();
}
//==========================================================================
//
// FRawMouse :: GetDevice
//
// Ensure the API is present and we can listen for mouse input.
//
//==========================================================================
bool FRawMouse::GetDevice()
{
RAWINPUTDEVICE rid;
rid.usUsagePage = HID_GENERIC_DESKTOP_PAGE;
rid.usUsage = HID_GDP_MOUSE;
rid.dwFlags = 0;
rid.hwndTarget = Window;
if (!RegisterRawInputDevices(&rid, 1, sizeof(rid)))
{
return false;
}
rid.dwFlags = RIDEV_REMOVE;
rid.hwndTarget = NULL; // Must be NULL for RIDEV_REMOVE.
RegisterRawInputDevices(&rid, 1, sizeof(rid));
return true;
}
//==========================================================================
//
// FRawMouse :: Grab
//
//==========================================================================
void FRawMouse::Grab()
{
if (!Grabbed)
{
RAWINPUTDEVICE rid;
rid.usUsagePage = HID_GENERIC_DESKTOP_PAGE;
rid.usUsage = HID_GDP_MOUSE;
rid.dwFlags = RIDEV_CAPTUREMOUSE | RIDEV_NOLEGACY;
rid.hwndTarget = Window;
if (RegisterRawInputDevices(&rid, 1, sizeof(rid)))
{
GetCursorPos(&UngrabbedPointerPos);
Grabbed = true;
SetCursorState(false);
// By setting the cursor position, we force the pointer image
// to change right away instead of having it delayed until
// some time in the future.
CenterMouse(-1, -1, NULL, NULL);
}
}
}
//==========================================================================
//
// FRawMouse :: Ungrab
//
//==========================================================================
void FRawMouse::Ungrab()
{
if (Grabbed)
{
RAWINPUTDEVICE rid;
rid.usUsagePage = HID_GENERIC_DESKTOP_PAGE;
rid.usUsage = HID_GDP_MOUSE;
rid.dwFlags = RIDEV_REMOVE;
rid.hwndTarget = NULL;
if (RegisterRawInputDevices(&rid, 1, sizeof(rid)))
{
Grabbed = false;
ClearButtonState();
}
SetCursorState(true);
SetCursorPos(UngrabbedPointerPos.x, UngrabbedPointerPos.y);
}
}
//==========================================================================
//
// FRawMouse :: ProcessRawInput
//
//==========================================================================
bool FRawMouse::ProcessRawInput(RAWINPUT *raw, int code)
{
if (!Grabbed || raw->header.dwType != RIM_TYPEMOUSE || !use_mouse)
{
return false;
}
// Check buttons. The up and down motions are stored in the usButtonFlags field.
// The ulRawButtons field, unfortunately, is device-dependant, and may well
// not contain any data at all. This means it is apparently impossible
// to read more than five mouse buttons with Windows, because RI_MOUSE_WHEEL
// gets in the way when trying to extrapolate to more than five.
for (int i = 0, mask = 1; i < 5; ++i)
{
if (raw->data.mouse.usButtonFlags & mask) // button down
{
PostButtonEvent(i, true);
}
mask <<= 1;
if (raw->data.mouse.usButtonFlags & mask) // button up
{
PostButtonEvent(i, false);
}
mask <<= 1;
}
if (raw->data.mouse.usButtonFlags & RI_MOUSE_WHEEL)
{
WheelMoved(0, (SHORT)raw->data.mouse.usButtonData);
}
else if (raw->data.mouse.usButtonFlags & 0x800) // horizontal mouse wheel
{
WheelMoved(1, (SHORT)raw->data.mouse.usButtonData);
}
int x = m_noprescale ? raw->data.mouse.lLastX : raw->data.mouse.lLastX << 2;
int y = -raw->data.mouse.lLastY;
PostMouseMove(x, y);
if (x | y)
{
CenterMouse(-1, -1, NULL, NULL);
}
return true;
}
//==========================================================================
//
// FRawMouse :: WndProcHook
//
//==========================================================================
bool FRawMouse::WndProcHook(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam, LRESULT *result)
{
if (!Grabbed)
{
return false;
}
if (message == WM_SYSCOMMAND)
{
wParam &= 0xFFF0;
if (wParam == SC_MOVE || wParam == SC_SIZE)
{
return true;
}
}
return false;
}
/**************************************************************************/
/**************************************************************************/
//==========================================================================
//
// CreateDInputMouse
//
//==========================================================================
static FMouse *CreateDInputMouse()
{
return new FDInputMouse;
}
//==========================================================================
//
// FDInputMouse - Constructor
//
//==========================================================================
FDInputMouse::FDInputMouse()
{
Device = NULL;
Grabbed = false;
SetCursorState(true);
}
//==========================================================================
//
// FDInputMouse - Destructor
//
//==========================================================================
FDInputMouse::~FDInputMouse()
{
if (Device != NULL)
{
Device->Release();
Device = NULL;
}
}
//==========================================================================
//
// FDInputMouse :: GetDevice
//
// Create the device interface and initialize it.
//
//==========================================================================
bool FDInputMouse::GetDevice()
{
HRESULT hr;
if (g_pdi3 != NULL)
{ // DirectInput3 interface
hr = g_pdi3->CreateDevice(GUID_SysMouse, (LPDIRECTINPUTDEVICE*)&Device, NULL);
}
else if (g_pdi != NULL)
{ // DirectInput8 interface
hr = g_pdi->CreateDevice(GUID_SysMouse, &Device, NULL);
}
else
{
hr = -1;
}
if (FAILED(hr))
{
return false;
}
// How many buttons does this mouse have?
DIDEVCAPS_DX3 caps = { sizeof(caps) };
hr = Device->GetCapabilities((DIDEVCAPS *)&caps);
// If that failed, just assume four buttons.
if (FAILED(hr))
{
caps.dwButtons = 4;
}
// Now select the data format with enough buttons for this mouse.
// (Can we use c_dfDIMouse2 with DirectInput3? If so, then we could just set
// that unconditionally.)
hr = Device->SetDataFormat(caps.dwButtons <= 4 ? &c_dfDIMouse : &c_dfDIMouse2);
if (FAILED(hr))
{
ufailit:
Device->Release();
Device = NULL;
return false;
}
hr = Device->SetCooperativeLevel(Window, DISCL_EXCLUSIVE | DISCL_FOREGROUND);
if (FAILED(hr))
{
goto ufailit;
}
// Set buffer size so we can use buffered input.
DIPROPDWORD prop;
prop.diph.dwSize = sizeof(prop);
prop.diph.dwHeaderSize = sizeof(prop.diph);
prop.diph.dwObj = 0;
prop.diph.dwHow = DIPH_DEVICE;
prop.dwData = DINPUT_BUFFERSIZE;
hr = Device->SetProperty(DIPROP_BUFFERSIZE, &prop.diph);
if (FAILED(hr))
{
goto ufailit;
}
return true;
}
//==========================================================================
//
// FDInputMouse::WndProcHook
//
//==========================================================================
bool FDInputMouse::WndProcHook(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam, LRESULT *result)
{
// Do not allow window sizing or moving activity while the mouse is
// grabbed, because they will never be able to complete, causing mouse
// input to hang until the mouse is ungrabbed (e.g. by alt-tabbing away).
if (Grabbed && message == WM_SYSCOMMAND)
{
wParam &= 0xFFF0;
if (wParam == SC_MOVE || wParam == SC_SIZE)
{
return true;
}
}
return false;
}
//==========================================================================
//
// FDInputMouse :: ProcessInput
//
// Posts any events that have accumulated since the previous call.
//
//==========================================================================
void FDInputMouse::ProcessInput()
{
DIDEVICEOBJECTDATA od;
DWORD dwElements;
HRESULT hr;
int dx, dy;
dx = 0;
dy = 0;
if (!Grabbed || !use_mouse)
return;
event_t ev = { 0 };
for (;;)
{
DWORD cbObjectData = g_pdi3 ? sizeof(DIDEVICEOBJECTDATA_DX3) : sizeof(DIDEVICEOBJECTDATA);
dwElements = 1;
hr = Device->GetDeviceData(cbObjectData, &od, &dwElements, 0);
if (hr == DIERR_INPUTLOST || hr == DIERR_NOTACQUIRED)
{
Grab();
hr = Device->GetDeviceData(cbObjectData, &od, &dwElements, 0);
}
/* Unable to read data or no data available */
if (FAILED(hr) || !dwElements)
break;
/* Look at the element to see what happened */
// GCC does not like putting the DIMOFS_ macros in case statements,
// so use ifs instead.
if (od.dwOfs == (DWORD)DIMOFS_X)
{
dx += od.dwData;
}
else if (od.dwOfs == (DWORD)DIMOFS_Y)
{
dy += od.dwData;
}
else if (od.dwOfs == (DWORD)DIMOFS_Z)
{
WheelMoved(0, od.dwData);
}
else if (od.dwOfs >= (DWORD)DIMOFS_BUTTON0 && od.dwOfs <= (DWORD)DIMOFS_BUTTON7)
{
/* [RH] Mouse button events mimic keydown/up events */
if (!GUICapture)
{
PostButtonEvent(od.dwOfs - DIMOFS_BUTTON0, !!(od.dwData & 0x80));
}
}
}
PostMouseMove(m_noprescale ? dx : dx<<2, -dy);
}
//==========================================================================
//
// FDInputMouse :: Grab
//
//==========================================================================
void FDInputMouse::Grab()
{
if (SUCCEEDED(Device->Acquire()))
{
Grabbed = true;
SetCursorState(false);
}
}
//==========================================================================
//
// FDInputMouse :: Ungrab
//
//==========================================================================
void FDInputMouse::Ungrab()
{
Device->Unacquire();
Grabbed = false;
SetCursorState(true);
ClearButtonState();
}
/**************************************************************************/
/**************************************************************************/
//==========================================================================
//
// CreateWin32Mouse
//
//==========================================================================
static FMouse *CreateWin32Mouse()
{
return new FWin32Mouse;
}
//==========================================================================
//
// FWin32Mouse - Constructor
//
//==========================================================================
FWin32Mouse::FWin32Mouse()
{
GetCursorPos(&UngrabbedPointerPos);
Grabbed = false;
SetCursorState(true);
}
//==========================================================================
//
// FWin32Mouse - Destructor
//
//==========================================================================
FWin32Mouse::~FWin32Mouse()
{
Ungrab();
}
//==========================================================================
//
// FWin32Mouse :: GetDevice
//
// The Win32 mouse is always available, since it is the lowest common
// denominator. (Even if it's not connected, it is still considered as
// "available"; it just won't generate any events.)
//
//==========================================================================
bool FWin32Mouse::GetDevice()
{
return true;
}
//==========================================================================
//
// FWin32Mouse :: ProcessInput
//
// Get current mouse position and post events if the mouse has moved from
// last time.
//
//==========================================================================
void FWin32Mouse::ProcessInput()
{
POINT pt;
int x, y;
if (!Grabbed || !use_mouse || !GetCursorPos(&pt))
{
return;
}
x = pt.x - PrevX;
y = PrevY - pt.y;
if (!m_noprescale)
{
x *= 3;
y *= 2;
}
if (x | y)
{
CenterMouse(pt.x, pt.y, &PrevX, &PrevY);
}
PostMouseMove(x, y);
}
//==========================================================================
//
// FWin32Mouse :: WndProcHook
//
// Intercepts mouse-related window messages if the mouse is grabbed.
//
//==========================================================================
bool FWin32Mouse::WndProcHook(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam, LRESULT *result)
{
if (!Grabbed)
{
return false;
}
if (message == WM_SIZE)
{
if (wParam == SIZE_MAXIMIZED || wParam == SIZE_RESTORED)
{
CenterMouse(-1, -1, &PrevX, &PrevY);
return true;
}
}
else if (message == WM_MOVE)
{
CenterMouse(-1, -1, &PrevX, &PrevY);
return true;
}
else if (message == WM_SYSCOMMAND)
{
// Do not enter the window moving and sizing modes while grabbed,
// because those require the mouse.
wParam &= 0xFFF0;
if (wParam == SC_MOVE || wParam == SC_SIZE)
{
return true;
}
}
else if (!use_mouse)
{
// all following messages should only be processed if the mouse is in use
return false;
}
else if (message == WM_MOUSEWHEEL)
{
WheelMoved(0, (SHORT)HIWORD(wParam));
return true;
}
else if (message == WM_MOUSEHWHEEL)
{
WheelMoved(1, (SHORT)HIWORD(wParam));
return true;
}
else if (message >= WM_LBUTTONDOWN && message <= WM_MBUTTONUP)
{
int action = (message - WM_LBUTTONDOWN) % 3;
int button = (message - WM_LBUTTONDOWN) / 3;
if (action == 2)
{ // double clicking we care not about.
return false;
}
event_t ev = { 0 };
ev.type = action ? EV_KeyUp : EV_KeyDown;
ev.data1 = KEY_MOUSE1 + button;
if (action)
{
ButtonState &= ~(1 << button);
}
else
{
ButtonState |= 1 << button;
}
D_PostEvent(&ev);
return true;
}
else if (message >= WM_XBUTTONDOWN && message <= WM_XBUTTONUP)
{
// Microsoft's (lack of) documentation for the X buttons is unclear on whether
// or not simultaneous pressing of multiple X buttons will ever be merged into
// a single message. Winuser.h describes the button field as being filled with
// flags, which suggests that it could merge them. My testing
// indicates it does not, but I will assume it might in the future.
auto xbuttons = GET_XBUTTON_WPARAM(wParam);
event_t ev = { 0 };
ev.type = (message == WM_XBUTTONDOWN) ? EV_KeyDown : EV_KeyUp;
// There are only two X buttons defined presently, so I extrapolate from
// the current winuser.h values to support up to 8 mouse buttons.
for (int i = 0; i < 5; ++i, xbuttons >>= 1)
{
if (xbuttons & 1)
{
ev.data1 = KEY_MOUSE4 + i;
if (ev.type == EV_KeyDown)
{
ButtonState |= 1 << (i + 4);
}
else
{
ButtonState &= ~(1 << (i + 4));
}
D_PostEvent(&ev);
}
}
*result = TRUE;
return true;
}
return false;
}
//==========================================================================
//
// FWin32Mouse :: Grab
//
// Hides the mouse and locks it inside the window boundaries.
//
//==========================================================================
void FWin32Mouse::Grab()
{
RECT rect;
if (Grabbed)
{
return;
}
GetCursorPos(&UngrabbedPointerPos);
ClipCursor(NULL); // helps with Win95?
GetClientRect(Window, &rect);
// Reposition the rect so that it only covers the client area.
ClientToScreen(Window, (LPPOINT)&rect.left);
ClientToScreen(Window, (LPPOINT)&rect.right);
ClipCursor(&rect);
SetCursorState(false);
CenterMouse(-1, -1, &PrevX, &PrevY);
Grabbed = true;
}
//==========================================================================
//
// FWin32Mouse :: Ungrab
//
// Shows the mouse and lets it roam free.
//
//==========================================================================
void FWin32Mouse::Ungrab()
{
if (!Grabbed)
{
return;
}
ClipCursor(NULL);
SetCursorPos(UngrabbedPointerPos.x, UngrabbedPointerPos.y);
SetCursorState(true);
Grabbed = false;
ClearButtonState();
}
/**************************************************************************/
/**************************************************************************/
//==========================================================================
//
// I_StartupMouse
//
// Called during game init and whenever in_mouse changes.
//
//==========================================================================
void I_StartupMouse ()
{
EMouseMode new_mousemode;
switch(in_mouse)
{
case 1:
new_mousemode = MM_Win32;
break;
case 2:
new_mousemode = MM_DInput;
break;
default:
case 3:
new_mousemode = MM_RawInput;
break;
}
if (new_mousemode != MouseMode)
{
if (Mouse != NULL)
{
delete Mouse;
}
do
{
Mouse = MouseFactory[new_mousemode - MM_Win32]();
if (Mouse != NULL)
{
if (Mouse->GetDevice())
{
break;
}
delete Mouse;
Mouse = NULL;
}
new_mousemode = (EMouseMode)(new_mousemode - 1);
}
while (new_mousemode != MM_None);
MouseMode = new_mousemode;
NativeMouse = true;
}
}