[jimtabor] 16508: Implement TrackMouseEvent.

Implement TrackMouseEvent.
Modified: trunk/reactos/lib/user32/misc/stubs.c
Modified: trunk/reactos/lib/user32/windows/input.c
  _____  

Modified: trunk/reactos/lib/user32/misc/stubs.c
--- trunk/reactos/lib/user32/misc/stubs.c	2005-07-08 12:13:23 UTC
(rev 16507)
+++ trunk/reactos/lib/user32/misc/stubs.c	2005-07-08 12:15:07 UTC
(rev 16508)
@@ -111,19 +111,6 @@

  */
 BOOL
 STDCALL
-TrackMouseEvent(
-  LPTRACKMOUSEEVENT lpEventTrack)
-{
-  UNIMPLEMENTED;
-  return FALSE;
-}
-
-
-/*
- * @unimplemented
- */
-BOOL
-STDCALL
 UnregisterDeviceNotification(
   HDEVNOTIFY Handle)
 {
  _____  

Modified: trunk/reactos/lib/user32/windows/input.c
--- trunk/reactos/lib/user32/windows/input.c	2005-07-08 12:13:23 UTC
(rev 16507)
+++ trunk/reactos/lib/user32/windows/input.c	2005-07-08 12:15:07 UTC
(rev 16508)
@@ -30,6 +30,21 @@

 
 #include <user32.h>
 
+/* GLOBALS
*******************************************************************/
+
+
+typedef struct __TRACKINGLIST {
+    TRACKMOUSEEVENT tme;
+    POINT pos; /* center of hover rectangle */
+    INT iHoverTime; /* elapsed time the cursor has been inside of the
hover rect */
+} _TRACKINGLIST;
+
+static _TRACKINGLIST TrackingList[10];
+static int iTrackMax = 0;
+static UINT_PTR timer;
+static const INT iTimerInterval = 50; /* msec for timer interval */
+
+
 /* FUNCTIONS
*****************************************************************/
 
 
@@ -126,13 +141,12 @@
 
 
 /*
- * @unimplemented
+ * @implemented
  */
 SHORT STDCALL
 GetAsyncKeyState(int vKey)
 {
-  UNIMPLEMENTED;
-  return 0;
+ return (SHORT) NtUserGetAsyncKeyState((DWORD) vKey);
 }
 
 
@@ -656,4 +670,339 @@
   NtUserSendInput(1, &Input, sizeof(INPUT));
 }
 
+
+/**********************************************************************
*
+ *           get_key_state
+ */
+static WORD get_key_state(void)
+{
+    WORD ret = 0;
+
+    if (GetSystemMetrics( SM_SWAPBUTTON ))
+    {
+        if (GetAsyncKeyState(VK_RBUTTON) & 0x80) ret |= MK_LBUTTON;
+        if (GetAsyncKeyState(VK_LBUTTON) & 0x80) ret |= MK_RBUTTON;
+    }
+    else
+    {
+        if (GetAsyncKeyState(VK_LBUTTON) & 0x80) ret |= MK_LBUTTON;
+        if (GetAsyncKeyState(VK_RBUTTON) & 0x80) ret |= MK_RBUTTON;
+    }
+    if (GetAsyncKeyState(VK_MBUTTON) & 0x80)  ret |= MK_MBUTTON;
+    if (GetAsyncKeyState(VK_SHIFT) & 0x80)    ret |= MK_SHIFT;
+    if (GetAsyncKeyState(VK_CONTROL) & 0x80)  ret |= MK_CONTROL;
+    if (GetAsyncKeyState(VK_XBUTTON1) & 0x80) ret |= MK_XBUTTON1;
+    if (GetAsyncKeyState(VK_XBUTTON2) & 0x80) ret |= MK_XBUTTON2;
+    return ret;
+}
+
+
+static void CALLBACK TrackMouseEventProc(HWND hwndUnused, UINT uMsg,
UINT_PTR idEvent,
+    DWORD dwTime)
+{
+    int i = 0;
+    POINT pos;
+    POINT posClient;
+    HWND hwnd;
+    INT nonclient;
+    INT hoverwidth = 0, hoverheight = 0;
+    RECT client;
+
+    GetCursorPos(&pos);
+    hwnd = WindowFromPoint(pos);
+
+    SystemParametersInfoA(SPI_GETMOUSEHOVERWIDTH, 0, &hoverwidth, 0);
+    SystemParametersInfoA(SPI_GETMOUSEHOVERHEIGHT, 0, &hoverheight, 0);
+
+    /* loop through tracking events we are processing */
+    while (i < iTrackMax) {
+        if (TrackingList[i].tme.dwFlags & TME_NONCLIENT) {
+            nonclient = 1;
+        }
+        else {
+            nonclient = 0;
+        }
+
+        /* see if this tracking event is looking for TME_LEAVE and that
the */
+        /* mouse has left the window */
+        if (TrackingList[i].tme.dwFlags & TME_LEAVE) {
+            if (TrackingList[i].tme.hwndTrack != hwnd) {
+                if (nonclient) {
+                    PostMessageA(TrackingList[i].tme.hwndTrack,
WM_NCMOUSELEAVE, 0, 0);
+                }
+                else {
+                    PostMessageA(TrackingList[i].tme.hwndTrack,
WM_MOUSELEAVE, 0, 0);
+                }
+
+                /* remove the TME_LEAVE flag */
+                TrackingList[i].tme.dwFlags ^= TME_LEAVE;
+            }
+            else {
+                GetClientRect(hwnd, &client);
+                MapWindowPoints(hwnd, NULL, (LPPOINT)&client, 2);
+                if(PtInRect(&client, pos)) {
+                    if (nonclient) {
+                        PostMessageA(TrackingList[i].tme.hwndTrack,
WM_NCMOUSELEAVE, 0, 0);
+                        /* remove the TME_LEAVE flag */
+                        TrackingList[i].tme.dwFlags ^= TME_LEAVE;
+                    }
+                }
+                else {
+                    if (!nonclient) {
+                        PostMessageA(TrackingList[i].tme.hwndTrack,
WM_MOUSELEAVE, 0, 0);
+                        /* remove the TME_LEAVE flag */
+                        TrackingList[i].tme.dwFlags ^= TME_LEAVE;
+                    }
+                }
+            }
+        }
+
+        /* see if we are tracking hovering for this hwnd */
+        if(TrackingList[i].tme.dwFlags & TME_HOVER) {
+            /* add the timer interval to the hovering time */
+            TrackingList[i].iHoverTime+=iTimerInterval;
+
+            /* has the cursor moved outside the rectangle centered
around pos? */
+            if((abs(pos.x - TrackingList[i].pos.x) > (hoverwidth /
2.0))
+              || (abs(pos.y - TrackingList[i].pos.y) > (hoverheight /
2.0)))
+            {
+                /* record this new position as the current position and
reset */
+                /* the iHoverTime variable to 0 */
+                TrackingList[i].pos = pos;
+                TrackingList[i].iHoverTime = 0;
+            }
+
+            /* has the mouse hovered long enough? */
+            if(TrackingList[i].iHoverTime <=
TrackingList[i].tme.dwHoverTime)
+            {
+                posClient.x = pos.x;
+                posClient.y = pos.y;
+                ScreenToClient(hwnd, &posClient);
+                if (nonclient) {
+                    PostMessageW(TrackingList[i].tme.hwndTrack,
WM_NCMOUSEHOVER,
+                                get_key_state(), MAKELPARAM(
posClient.x, posClient.y ));
+                }
+                else {
+                    PostMessageW(TrackingList[i].tme.hwndTrack,
WM_MOUSEHOVER,
+                                get_key_state(), MAKELPARAM(
posClient.x, posClient.y ));
+                }
+
+                /* stop tracking mouse hover */
+                TrackingList[i].tme.dwFlags ^= TME_HOVER;
+            }
+        }
+
+        /* see if we are still tracking TME_HOVER or TME_LEAVE for this
entry */
+        if((TrackingList[i].tme.dwFlags & TME_HOVER) ||
+           (TrackingList[i].tme.dwFlags & TME_LEAVE)) {
+            i++;
+        } else { /* remove this entry from the tracking list */
+            TrackingList[i] = TrackingList[--iTrackMax];
+        }
+    }
+
+    /* stop the timer if the tracking list is empty */
+    if(iTrackMax == 0) {
+        KillTimer(0, timer);
+        timer = 0;
+    }
+}
+
+
+/**********************************************************************
*
+ * TrackMouseEvent [USER32]
+ *
+ * Requests notification of mouse events
+ *
+ * During mouse tracking WM_MOUSEHOVER or WM_MOUSELEAVE events are
posted
+ * to the hwnd specified in the ptme structure.  After the event
message
+ * is posted to the hwnd, the entry in the queue is removed.
+ *
+ * If the current hwnd isn't ptme->hwndTrack the TME_HOVER flag is
completely
+ * ignored. The TME_LEAVE flag results in a WM_MOUSELEAVE message being
posted
+ * immediately and the TME_LEAVE flag being ignored.
+ *
+ * PARAMS
+ *     ptme [I,O] pointer to TRACKMOUSEEVENT information structure.
+ *
+ * RETURNS
+ *     Success: non-zero
+ *     Failure: zero
+ *
+ */
+/*
+ * @unimplemented
+ */
+BOOL
+STDCALL
+TrackMouseEvent(
+  LPTRACKMOUSEEVENT ptme)
+{
+    DWORD flags = 0;
+    int i = 0;
+    BOOL cancel = 0, hover = 0, leave = 0, query = 0, nonclient = 0,
inclient = 0;
+    HWND hwnd;
+    POINT pos;
+    RECT client;
+
+
+    pos.x = 0;
+    pos.y = 0;
+    SetRectEmpty(&client);
+
+    DPRINT("%lx, %lx, %p, %lx\n", ptme->cbSize, ptme->dwFlags,
ptme->hwndTrack, ptme->dwHoverTime);
+
+    if (ptme->cbSize != sizeof(TRACKMOUSEEVENT)) {
+        DPRINT("wrong TRACKMOUSEEVENT size from app\n");
+        SetLastError(ERROR_INVALID_PARAMETER); /* FIXME not sure if
this is correct */
+        return FALSE;
+    }
+
+    flags = ptme->dwFlags;
+
+    /* if HOVER_DEFAULT was specified replace this with the systems
current value */
+    if(ptme->dwHoverTime == HOVER_DEFAULT)
+        SystemParametersInfoA(SPI_GETMOUSEHOVERTIME, 0,
&(ptme->dwHoverTime), 0);
+
+    GetCursorPos(&pos);
+    hwnd = WindowFromPoint(pos);
+
+    if ( flags & TME_CANCEL ) {
+        flags &= ~ TME_CANCEL;
+        cancel = 1;
+    }
+
+    if ( flags & TME_HOVER  ) {
+        flags &= ~ TME_HOVER;
+        hover = 1;
+    }
+
+    if ( flags & TME_LEAVE ) {
+        flags &= ~ TME_LEAVE;
+        leave = 1;
+    }
+
+    if ( flags & TME_NONCLIENT ) {
+        flags &= ~ TME_NONCLIENT;
+        nonclient = 1;
+    }
+
+    /* fill the TRACKMOUSEEVENT struct with the current tracking for
the given hwnd */
+    if ( flags & TME_QUERY ) {
+        flags &= ~ TME_QUERY;
+        query = 1;
+        i = 0;
+
+        /* Find the tracking list entry with the matching hwnd */
+        while((i < iTrackMax) && (TrackingList[i].tme.hwndTrack !=
ptme->hwndTrack)) {
+            i++;
+        }
+
+        /* hwnd found, fill in the ptme struct */
+        if(i < iTrackMax)
+            *ptme = TrackingList[i].tme;
+        else
+            ptme->dwFlags = 0;
+
+        return TRUE; /* return here, TME_QUERY is retrieving
information */
+    }
+
+    if ( flags )
+        DPRINT("Unknown flag(s) %08lx\n", flags );
+
+    if(cancel) {
+        /* find a matching hwnd if one exists */
+        i = 0;
+
+        while((i < iTrackMax) && (TrackingList[i].tme.hwndTrack !=
ptme->hwndTrack)) {
+          i++;
+        }
+
+        if(i < iTrackMax) {
+            TrackingList[i].tme.dwFlags &= ~(ptme->dwFlags &
~TME_CANCEL);
+
+            /* if we aren't tracking on hover or leave remove this
entry */
+            if(!((TrackingList[i].tme.dwFlags & TME_HOVER) ||
+                 (TrackingList[i].tme.dwFlags & TME_LEAVE)))
+            {
+                TrackingList[i] = TrackingList[--iTrackMax];
+
+                if(iTrackMax == 0) {
+                    KillTimer(0, timer);
+                    timer = 0;
+                }
+            }
+        }
+    } else {
+        /* see if hwndTrack isn't the current window */
+        if(ptme->hwndTrack != hwnd) {
+            if(leave) {
+                if(nonclient) {
+                    PostMessageA(ptme->hwndTrack, WM_NCMOUSELEAVE, 0,
0);
+                }
+                else {
+                    PostMessageA(ptme->hwndTrack, WM_MOUSELEAVE, 0, 0);
+                }
+            }
+        } else {
+            GetClientRect(ptme->hwndTrack, &client);
+            MapWindowPoints(ptme->hwndTrack, NULL, (LPPOINT)&client,
2);
+            if(PtInRect(&client, pos)) {
+                inclient = 1;
+            }
+            if(nonclient && inclient) {
+                PostMessageA(ptme->hwndTrack, WM_NCMOUSELEAVE, 0, 0);
+                return TRUE;
+            }
+            else if(!nonclient && !inclient) {
+                PostMessageA(ptme->hwndTrack, WM_MOUSELEAVE, 0, 0);
+                return TRUE;
+            }
+
+            /* See if this hwnd is already being tracked and update the
tracking flags */
+            for(i = 0; i < iTrackMax; i++) {
+                if(TrackingList[i].tme.hwndTrack == ptme->hwndTrack) {
+                    TrackingList[i].tme.dwFlags = 0;
+
+                    if(hover) {
+                        TrackingList[i].tme.dwFlags |= TME_HOVER;
+                        TrackingList[i].tme.dwHoverTime =
ptme->dwHoverTime;
+                    }
+
+                    if(leave)
+                        TrackingList[i].tme.dwFlags |= TME_LEAVE;
+
+                    if(nonclient)
+                        TrackingList[i].tme.dwFlags |= TME_NONCLIENT;
+
+                    /* reset iHoverTime as per winapi specs */
+                    TrackingList[i].iHoverTime = 0;
+
+                    return TRUE;
+                }
+            }
+
+            /* if the tracking list is full return FALSE */
+            if (iTrackMax == sizeof (TrackingList) /
sizeof(*TrackingList)) {
+                return FALSE;
+            }
+
+            /* Adding new mouse event to the tracking list */
+            TrackingList[iTrackMax].tme = *ptme;
+
+            /* Initialize HoverInfo variables even if not hover
tracking */
+            TrackingList[iTrackMax].iHoverTime = 0;
+            TrackingList[iTrackMax].pos = pos;
+
+            iTrackMax++;
+
+            if (!timer) {
+                timer = SetTimer(0, 0, iTimerInterval,
TrackMouseEventProc);
+            }
+        }
+    }
+
+    return TRUE;
+}
+
 /* EOF */