341 lines
		
	
	
		
			8.9 KiB
		
	
	
	
		
			C
		
	
	
	
			
		
		
	
	
			341 lines
		
	
	
		
			8.9 KiB
		
	
	
	
		
			C
		
	
	
	
/*
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 *Copyright (C) 1994-2000 The XFree86 Project, Inc. All Rights Reserved.
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 *
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 *Permission is hereby granted, free of charge, to any person obtaining
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 * a copy of this software and associated documentation files (the
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 *"Software"), to deal in the Software without restriction, including
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 *without limitation the rights to use, copy, modify, merge, publish,
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 *distribute, sublicense, and/or sell copies of the Software, and to
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 *permit persons to whom the Software is furnished to do so, subject to
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 *the following conditions:
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 *
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 *The above copyright notice and this permission notice shall be
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 *included in all copies or substantial portions of the Software.
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 *
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 *THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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 *EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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 *MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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 *NONINFRINGEMENT. IN NO EVENT SHALL THE XFREE86 PROJECT BE LIABLE FOR
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 *ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF
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 *CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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 *WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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 *
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 *Except as contained in this notice, the name of the XFree86 Project
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 *shall not be used in advertising or otherwise to promote the sale, use
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 *or other dealings in this Software without prior written authorization
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 *from the XFree86 Project.
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 *
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 * Authors:	Dakshinamurthy Karra
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 *		Suhaib M Siddiqi
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 *		Peter Busch
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 *		Harold L Hunt II
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 */
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#ifdef HAVE_XWIN_CONFIG_H
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#include <xwin-config.h>
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#endif
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#include "win.h"
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#if defined(XFree86Server) && defined(XINPUT)
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#include "inputstr.h"
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/* Peek the internal button mapping */
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static CARD8 const *g_winMouseButtonMap = NULL;
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#endif
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/*
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 * Local prototypes
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 */
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static void
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winMouseCtrl (DeviceIntPtr pDevice, PtrCtrl *pCtrl);
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static void
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winMouseCtrl (DeviceIntPtr pDevice, PtrCtrl *pCtrl)
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{
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}
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/*
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 * See Porting Layer Definition - p. 18
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 * This is known as a DeviceProc
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 */
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int
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winMouseProc (DeviceIntPtr pDeviceInt, int iState)
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{
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  int 			lngMouseButtons, i;
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  int			lngWheelEvents = 2;
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  CARD8			*map;
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  DevicePtr		pDevice = (DevicePtr) pDeviceInt;
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  switch (iState)
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    {
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    case DEVICE_INIT:
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      /* Get number of mouse buttons */
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      lngMouseButtons = GetSystemMetrics(SM_CMOUSEBUTTONS);
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      /* Mapping of windows events to X events:
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       * LEFT:1 MIDDLE:2 RIGHT:3
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       * SCROLL_UP:4 SCROLL_DOWN:5
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       * XBUTTON 1:6 XBUTTON 2:7 ...
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       *
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       * To map scroll wheel correctly we need at least the 3 normal buttons
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       */
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      if (lngMouseButtons < 3)
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        lngMouseButtons = 3;
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      winMsg(X_PROBED, "%d mouse buttons found\n", lngMouseButtons);
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      /* allocate memory: 
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       * number of buttons + 2x mouse wheel event + 1 extra (offset for map) 
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       */
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      map = malloc(sizeof(CARD8) * (lngMouseButtons + lngWheelEvents + 1));
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      /* initalize button map */ 
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      map[0] = 0;
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      for (i=1; i <= lngMouseButtons + lngWheelEvents; i++)
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      	map[i] = i;
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      InitPointerDeviceStruct (pDevice,
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			       map,
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			       lngMouseButtons + lngWheelEvents,
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			       miPointerGetMotionEvents,
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			       winMouseCtrl,
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			       miPointerGetMotionBufferSize ());
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      free(map);
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#if defined(XFree86Server) && defined(XINPUT)
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      g_winMouseButtonMap = pDeviceInt->button->map;
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#endif
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      break;
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    case DEVICE_ON:
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      pDevice->on = TRUE;
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      break;
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    case DEVICE_CLOSE:
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#if defined(XFree86Server) && defined(XINPUT)
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      g_winMouseButtonMap = NULL;
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#endif
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    case DEVICE_OFF:
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      pDevice->on = FALSE;
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      break;
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    }
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  return Success;
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}
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/* Handle the mouse wheel */
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int
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winMouseWheel (ScreenPtr pScreen, int iDeltaZ)
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{
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  winScreenPriv(pScreen);
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  int button; /* Button4 or Button5 */
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  /* Button4 = WheelUp */
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  /* Button5 = WheelDown */
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  /* Do we have any previous delta stored? */
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  if ((pScreenPriv->iDeltaZ > 0
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       && iDeltaZ > 0)
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      || (pScreenPriv->iDeltaZ < 0
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	  && iDeltaZ < 0))
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    {
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      /* Previous delta and of same sign as current delta */
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      iDeltaZ += pScreenPriv->iDeltaZ;
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      pScreenPriv->iDeltaZ = 0;
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    }
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  else
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    {
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      /*
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       * Previous delta of different sign, or zero.
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       * We will set it to zero for either case,
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       * as blindly setting takes just as much time
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       * as checking, then setting if necessary :)
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       */
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      pScreenPriv->iDeltaZ = 0;
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    }
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  /*
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   * Only process this message if the wheel has moved further than
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   * WHEEL_DELTA
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   */
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  if (iDeltaZ >= WHEEL_DELTA || (-1 * iDeltaZ) >= WHEEL_DELTA)
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    {
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      pScreenPriv->iDeltaZ = 0;
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      /* Figure out how many whole deltas of the wheel we have */
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      iDeltaZ /= WHEEL_DELTA;
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    }
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  else
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    {
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      /*
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       * Wheel has not moved past WHEEL_DELTA threshold;
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       * we will store the wheel delta until the threshold
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       * has been reached.
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       */
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      pScreenPriv->iDeltaZ = iDeltaZ;
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      return 0;
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    }
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  /* Set the button to indicate up or down wheel delta */
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  if (iDeltaZ > 0)
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    {
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      button = Button4;
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    }
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  else
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    {
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      button = Button5;
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    }
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  /*
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   * Flip iDeltaZ to positive, if negative,
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   * because always need to generate a *positive* number of
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   * button clicks for the Z axis.
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   */
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  if (iDeltaZ < 0)
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    {
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      iDeltaZ *= -1;
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    }
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  /* Generate X input messages for each wheel delta we have seen */
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  while (iDeltaZ--)
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    {
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      /* Push the wheel button */
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      winMouseButtonsSendEvent (ButtonPress, button);
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      /* Release the wheel button */
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      winMouseButtonsSendEvent (ButtonRelease, button);
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    }
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  return 0;
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}
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/*
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 * Enqueue a mouse button event
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 */
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void
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winMouseButtonsSendEvent (int iEventType, int iButton)
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{
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  xEvent		xCurrentEvent;
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  /* Load an xEvent and enqueue the event */
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  xCurrentEvent.u.u.type = iEventType;
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#if defined(XFree86Server) && defined(XINPUT)
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  if (g_winMouseButtonMap)
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    xCurrentEvent.u.u.detail = g_winMouseButtonMap[iButton];
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  else
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#endif
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  xCurrentEvent.u.u.detail = iButton;
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  xCurrentEvent.u.keyButtonPointer.time
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    = g_c32LastInputEventTime = GetTickCount ();
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  mieqEnqueue (&xCurrentEvent);
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}
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/*
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 * Decide what to do with a Windows mouse message
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 */
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int
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winMouseButtonsHandle (ScreenPtr pScreen,
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		       int iEventType, int iButton,
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		       WPARAM wParam)
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{
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  winScreenPriv(pScreen);
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  winScreenInfo		*pScreenInfo = pScreenPriv->pScreenInfo;
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  /* Send button events right away if emulate 3 buttons is off */
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  if (pScreenInfo->iE3BTimeout == WIN_E3B_OFF)
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    {
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      /* Emulate 3 buttons is off, send the button event */
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      winMouseButtonsSendEvent (iEventType, iButton);
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      return 0;
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    }
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  /* Emulate 3 buttons is on, let the fun begin */
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  if (iEventType == ButtonPress
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      && pScreenPriv->iE3BCachedPress == 0
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      && !pScreenPriv->fE3BFakeButton2Sent)
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    {
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      /*
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       * Button was pressed, no press is cached,
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       * and there is no fake button 2 release pending.
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       */
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      /* Store button press type */
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      pScreenPriv->iE3BCachedPress = iButton;
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      /*
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       * Set a timer to send this button press if the other button
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       * is not pressed within the timeout time.
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       */
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      SetTimer (pScreenPriv->hwndScreen,
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		WIN_E3B_TIMER_ID,
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		pScreenInfo->iE3BTimeout,
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		NULL);
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    }
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  else if (iEventType == ButtonPress
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	   && pScreenPriv->iE3BCachedPress != 0
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	   && pScreenPriv->iE3BCachedPress != iButton
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	   && !pScreenPriv->fE3BFakeButton2Sent)
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    {
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      /*
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       * Button press is cached, other button was pressed,
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       * and there is no fake button 2 release pending.
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       */
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      /* Mouse button was cached and other button was pressed */
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      KillTimer (pScreenPriv->hwndScreen, WIN_E3B_TIMER_ID);
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      pScreenPriv->iE3BCachedPress = 0;
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      /* Send fake middle button */
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      winMouseButtonsSendEvent (ButtonPress, Button2);
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      /* Indicate that a fake middle button event was sent */
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      pScreenPriv->fE3BFakeButton2Sent = TRUE;
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    }
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  else if (iEventType == ButtonRelease
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	   && pScreenPriv->iE3BCachedPress == iButton)
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    {
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      /*
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       * Cached button was released before timer ran out,
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       * and before the other mouse button was pressed.
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       */
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      KillTimer (pScreenPriv->hwndScreen, WIN_E3B_TIMER_ID);
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      pScreenPriv->iE3BCachedPress = 0;
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      /* Send cached press, then send release */
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      winMouseButtonsSendEvent (ButtonPress, iButton);
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      winMouseButtonsSendEvent (ButtonRelease, iButton);
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    }
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  else if (iEventType == ButtonRelease
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	   && pScreenPriv->fE3BFakeButton2Sent
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	   && !(wParam & MK_LBUTTON)
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	   && !(wParam & MK_RBUTTON))
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    {
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      /*
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       * Fake button 2 was sent and both mouse buttons have now been released
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       */
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      pScreenPriv->fE3BFakeButton2Sent = FALSE;
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      /* Send middle mouse button release */
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      winMouseButtonsSendEvent (ButtonRelease, Button2);
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    }
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  else if (iEventType == ButtonRelease
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	   && pScreenPriv->iE3BCachedPress == 0
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	   && !pScreenPriv->fE3BFakeButton2Sent)
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    {
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      /*
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       * Button was release, no button is cached,
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       * and there is no fake button 2 release is pending.
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       */
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      winMouseButtonsSendEvent (ButtonRelease, iButton);
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    }
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  return 0;
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}
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