R6.6 is the Xorg base-line

1 files changed, 498 insertions, 0 deletions

diff --git a/mi/mipointer.c b/mi/mipointer.c
new file mode 100644
index 000000000..8617861cd
--- /dev/null
+++ b/mi/mipointer.c
@@ -0,0 +1,498 @@
+/*
+ * mipointer.c
+ */
+
+/* $Xorg: mipointer.c,v 1.4 2001/02/09 02:05:21 xorgcvs Exp $ */
+
+/*
+
+Copyright 1989, 1998  The Open Group
+
+Permission to use, copy, modify, distribute, and sell this software and its
+documentation for any purpose is hereby granted without fee, provided that
+the above copyright notice appear in all copies and that both that
+copyright notice and this permission notice appear in supporting
+documentation.
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
+OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+Except as contained in this notice, the name of The Open Group shall not be
+used in advertising or otherwise to promote the sale, use or other dealings
+in this Software without prior written authorization from The Open Group.
+*/
+
+# define NEED_EVENTS
+# include   "X.h"
+# include   "Xmd.h"
+# include   "Xproto.h"
+# include   "misc.h"
+# include   "windowstr.h"
+# include   "pixmapstr.h"
+# include   "mi.h"
+# include   "scrnintstr.h"
+# include   "mipointrst.h"
+# include   "cursorstr.h"
+# include   "dixstruct.h"
+
+static int  miPointerScreenIndex;
+static unsigned long miPointerGeneration = 0;
+
+#define GetScreenPrivate(s) ((miPointerScreenPtr) ((s)->devPrivates[miPointerScreenIndex].ptr))
+#define SetupScreen(s)	miPointerScreenPtr  pScreenPriv = GetScreenPrivate(s)
+
+/*
+ * until more than one pointer device exists.
+ */
+
+static miPointerRec miPointer;
+
+static Bool miPointerRealizeCursor (),	    miPointerUnrealizeCursor ();
+static Bool miPointerDisplayCursor ();
+static void miPointerConstrainCursor (),    miPointerPointerNonInterestBox();
+static void miPointerCursorLimits ();
+static Bool miPointerSetCursorPosition ();
+
+static Bool miPointerCloseScreen();
+
+static void miPointerMove ();
+
+Bool
+miPointerInitialize (pScreen, spriteFuncs, screenFuncs, waitForUpdate)
+    ScreenPtr		    pScreen;
+    miPointerSpriteFuncPtr  spriteFuncs;
+    miPointerScreenFuncPtr  screenFuncs;
+    Bool		    waitForUpdate;
+{
+    miPointerScreenPtr	pScreenPriv;
+
+    if (miPointerGeneration != serverGeneration)
+    {
+	miPointerScreenIndex = AllocateScreenPrivateIndex();
+	if (miPointerScreenIndex < 0)
+	    return FALSE;
+	miPointerGeneration = serverGeneration;
+    }
+    pScreenPriv = (miPointerScreenPtr) xalloc (sizeof (miPointerScreenRec));
+    if (!pScreenPriv)
+	return FALSE;
+    pScreenPriv->spriteFuncs = spriteFuncs;
+    pScreenPriv->screenFuncs = screenFuncs;
+    /*
+     * check for uninitialized methods
+     */
+    if (!screenFuncs->EnqueueEvent)
+	screenFuncs->EnqueueEvent = mieqEnqueue;
+    if (!screenFuncs->NewEventScreen)
+	screenFuncs->NewEventScreen = mieqSwitchScreen;
+    pScreenPriv->waitForUpdate = waitForUpdate;
+    pScreenPriv->CloseScreen = pScreen->CloseScreen;
+    pScreen->CloseScreen = miPointerCloseScreen;
+    pScreen->devPrivates[miPointerScreenIndex].ptr = (pointer) pScreenPriv;
+    /*
+     * set up screen cursor method table
+     */
+    pScreen->ConstrainCursor = miPointerConstrainCursor;
+    pScreen->CursorLimits = miPointerCursorLimits;
+    pScreen->DisplayCursor = miPointerDisplayCursor;
+    pScreen->RealizeCursor = miPointerRealizeCursor;
+    pScreen->UnrealizeCursor = miPointerUnrealizeCursor;
+    pScreen->SetCursorPosition = miPointerSetCursorPosition;
+    pScreen->RecolorCursor = miRecolorCursor;
+    pScreen->PointerNonInterestBox = miPointerPointerNonInterestBox;
+    /*
+     * set up the pointer object
+     */
+    miPointer.pScreen = NULL;
+    miPointer.pSpriteScreen = NULL;
+    miPointer.pCursor = NULL;
+    miPointer.pSpriteCursor = NULL;
+    miPointer.limits.x1 = 0;
+    miPointer.limits.x2 = 32767;
+    miPointer.limits.y1 = 0;
+    miPointer.limits.y2 = 32767;
+    miPointer.confined = FALSE;
+    miPointer.x = 0;
+    miPointer.y = 0;
+    miPointer.history_start = miPointer.history_end = 0;
+    return TRUE;
+}
+
+static Bool
+miPointerCloseScreen (index, pScreen)
+    int		index;
+    ScreenPtr	pScreen;
+{
+    SetupScreen(pScreen);
+
+    if (pScreen == miPointer.pScreen)
+	miPointer.pScreen = 0;
+    if (pScreen == miPointer.pSpriteScreen)
+	miPointer.pSpriteScreen = 0;
+    pScreen->CloseScreen = pScreenPriv->CloseScreen;
+    xfree ((pointer) pScreenPriv);
+    return (*pScreen->CloseScreen) (index, pScreen);
+}
+
+/*
+ * DIX/DDX interface routines
+ */
+
+static Bool
+miPointerRealizeCursor (pScreen, pCursor)
+    ScreenPtr	pScreen;
+    CursorPtr	pCursor;
+{
+    SetupScreen(pScreen);
+
+    return (*pScreenPriv->spriteFuncs->RealizeCursor) (pScreen, pCursor);
+}
+
+static Bool
+miPointerUnrealizeCursor (pScreen, pCursor)
+    ScreenPtr	pScreen;
+    CursorPtr	pCursor;
+{
+    SetupScreen(pScreen);
+
+    return (*pScreenPriv->spriteFuncs->UnrealizeCursor) (pScreen, pCursor);
+}
+
+static Bool
+miPointerDisplayCursor (pScreen, pCursor)
+    ScreenPtr	pScreen;
+    CursorPtr	pCursor;
+{
+    SetupScreen(pScreen);
+
+    miPointer.pCursor = pCursor;
+    miPointer.pScreen = pScreen;
+    miPointerUpdate ();
+    return TRUE;
+}
+
+static void
+miPointerConstrainCursor (pScreen, pBox)
+    ScreenPtr	pScreen;
+    BoxPtr	pBox;
+{
+    miPointer.limits = *pBox;
+    miPointer.confined = PointerConfinedToScreen();
+}
+
+/*ARGSUSED*/
+static void
+miPointerPointerNonInterestBox (pScreen, pBox)
+    ScreenPtr	pScreen;
+    BoxPtr	pBox;
+{
+    /* until DIX uses this, this will remain a stub */
+}
+
+/*ARGSUSED*/
+static void
+miPointerCursorLimits(pScreen, pCursor, pHotBox, pTopLeftBox)
+    ScreenPtr	pScreen;
+    CursorPtr	pCursor;
+    BoxPtr	pHotBox;
+    BoxPtr	pTopLeftBox;
+{
+    *pTopLeftBox = *pHotBox;
+}
+
+static Bool GenerateEvent;
+
+static Bool
+miPointerSetCursorPosition(pScreen, x, y, generateEvent)
+    ScreenPtr pScreen;
+    int       x, y;
+    Bool      generateEvent;
+{
+    SetupScreen (pScreen);
+
+    GenerateEvent = generateEvent;
+    /* device dependent - must pend signal and call miPointerWarpCursor */
+    (*pScreenPriv->screenFuncs->WarpCursor) (pScreen, x, y);
+    if (!generateEvent)
+	miPointerUpdate();
+    return TRUE;
+}
+
+/* Once signals are ignored, the WarpCursor function can call this */
+
+void
+miPointerWarpCursor (pScreen, x, y)
+    ScreenPtr	pScreen;
+    int		x, y;
+{
+    SetupScreen (pScreen);
+
+    if (miPointer.pScreen != pScreen)
+	(*pScreenPriv->screenFuncs->NewEventScreen) (pScreen, TRUE);
+
+    if (GenerateEvent)
+    {
+	miPointerMove (pScreen, x, y, GetTimeInMillis()); 
+    }
+    else
+    {
+	/* everything from miPointerMove except the event and history */
+
+    	if (!pScreenPriv->waitForUpdate && pScreen == miPointer.pSpriteScreen)
+    	{
+	    miPointer.devx = x;
+	    miPointer.devy = y;
+	    (*pScreenPriv->spriteFuncs->MoveCursor) (pScreen, x, y);
+    	}
+	miPointer.x = x;
+	miPointer.y = y;
+	miPointer.pScreen = pScreen;
+    }
+}
+
+/*
+ * Pointer/CursorDisplay interface routines
+ */
+
+int
+miPointerGetMotionBufferSize ()
+{
+    return MOTION_SIZE;
+}
+
+int
+miPointerGetMotionEvents (pPtr, coords, start, stop, pScreen)
+    DeviceIntPtr    pPtr;
+    xTimecoord	    *coords;
+    unsigned long   start, stop;
+    ScreenPtr	    pScreen;
+{
+    int		    i;
+    int		    count = 0;
+    miHistoryPtr    h;
+
+    for (i = miPointer.history_start; i != miPointer.history_end;)
+    {
+	h = &miPointer.history[i];
+	if (h->event.time >= stop)
+	    break;
+	if (h->event.time >= start)
+	{
+	    *coords++ = h->event;
+	    count++;
+	}
+	if (++i == MOTION_SIZE) i = 0;
+    }
+    return count;
+}
+
+    
+/*
+ * miPointerUpdate
+ *
+ * Syncronize the sprite with the cursor - called from ProcessInputEvents
+ */
+
+void
+miPointerUpdate ()
+{
+    ScreenPtr		pScreen;
+    miPointerScreenPtr	pScreenPriv;
+    int			x, y, devx, devy;
+
+    pScreen = miPointer.pScreen;
+    x = miPointer.x;
+    y = miPointer.y;
+    devx = miPointer.devx;
+    devy = miPointer.devy;
+    if (!pScreen)
+	return;
+    pScreenPriv = GetScreenPrivate (pScreen);
+    /*
+     * if the cursor has switched screens, disable the sprite
+     * on the old screen
+     */
+    if (pScreen != miPointer.pSpriteScreen)
+    {
+	if (miPointer.pSpriteScreen)
+	{
+	    miPointerScreenPtr  pOldPriv;
+    	
+	    pOldPriv = GetScreenPrivate (miPointer.pSpriteScreen);
+	    if (miPointer.pCursor)
+	    {
+	    	(*pOldPriv->spriteFuncs->SetCursor)
+			    	(miPointer.pSpriteScreen, NullCursor, 0, 0);
+	    }
+	    (*pOldPriv->screenFuncs->CrossScreen) (miPointer.pSpriteScreen, FALSE);
+	}
+	(*pScreenPriv->screenFuncs->CrossScreen) (pScreen, TRUE);
+	(*pScreenPriv->spriteFuncs->SetCursor)
+				(pScreen, miPointer.pCursor, x, y);
+	miPointer.devx = x;
+	miPointer.devy = y;
+	miPointer.pSpriteCursor = miPointer.pCursor;
+	miPointer.pSpriteScreen = pScreen;
+    }
+    /*
+     * if the cursor has changed, display the new one
+     */
+    else if (miPointer.pCursor != miPointer.pSpriteCursor)
+    {
+	(*pScreenPriv->spriteFuncs->SetCursor) 
+	    (pScreen, miPointer.pCursor, x, y);
+	miPointer.devx = x;
+	miPointer.devy = y;
+	miPointer.pSpriteCursor = miPointer.pCursor;
+    }
+    else if (x != devx || y != devy)
+    {
+	miPointer.devx = x;
+	miPointer.devy = y;
+	(*pScreenPriv->spriteFuncs->MoveCursor) (pScreen, x, y);
+    }
+}
+
+/*
+ * miPointerDeltaCursor.  The pointer has moved dx,dy from it's previous
+ * position.
+ */
+
+void
+miPointerDeltaCursor (dx, dy, time)
+    int		    dx, dy;
+    unsigned long   time;
+{
+    miPointerAbsoluteCursor (miPointer.x + dx, miPointer.y + dy, time);
+}
+
+/*
+ * miPointerAbsoluteCursor.  The pointer has moved to x,y
+ */
+
+void
+miPointerAbsoluteCursor (x, y, time)
+    int		    x, y;
+    unsigned long   time;
+{
+    miPointerScreenPtr	pScreenPriv;
+    ScreenPtr		pScreen;
+    ScreenPtr		newScreen;
+
+    pScreen = miPointer.pScreen;
+    if (!pScreen)
+	return;	    /* called before ready */
+    if (x < 0 || x >= pScreen->width || y < 0 || y >= pScreen->height)
+    {
+	pScreenPriv = GetScreenPrivate (pScreen);
+	if (!miPointer.confined)
+	{
+	    newScreen = pScreen;
+	    (*pScreenPriv->screenFuncs->CursorOffScreen) (&newScreen, &x, &y);
+	    if (newScreen != pScreen)
+	    {
+		pScreen = newScreen;
+		(*pScreenPriv->screenFuncs->NewEventScreen) (pScreen, FALSE);
+		pScreenPriv = GetScreenPrivate (pScreen);
+	    	/* Smash the confine to the new screen */
+	    	miPointer.limits.x2 = pScreen->width;
+	    	miPointer.limits.y2 = pScreen->height;
+	    }
+	}
+    }
+    /*
+     * constrain the hot-spot to the current
+     * limits
+     */
+    if (x < miPointer.limits.x1)
+	x = miPointer.limits.x1;
+    if (x >= miPointer.limits.x2)
+	x = miPointer.limits.x2 - 1;
+    if (y < miPointer.limits.y1)
+	y = miPointer.limits.y1;
+    if (y >= miPointer.limits.y2)
+	y = miPointer.limits.y2 - 1;
+    if (miPointer.x == x && miPointer.y == y && miPointer.pScreen == pScreen)
+	return;
+    miPointerMove (pScreen, x, y, time);
+}
+
+void
+miPointerPosition (x, y)
+    int	    *x, *y;
+{
+    *x = miPointer.x;
+    *y = miPointer.y;
+}
+
+/*
+ * miPointerMove.  The pointer has moved to x,y on current screen
+ */
+
+static void
+miPointerMove (pScreen, x, y, time)
+    ScreenPtr	    pScreen;
+    int		    x, y;
+    unsigned long   time;
+{
+    SetupScreen(pScreen);
+    xEvent		xE;
+    miHistoryPtr	history;
+    int			prev, end, start;
+
+    if (!pScreenPriv->waitForUpdate && pScreen == miPointer.pSpriteScreen)
+    {
+	miPointer.devx = x;
+	miPointer.devy = y;
+	(*pScreenPriv->spriteFuncs->MoveCursor) (pScreen, x, y);
+    }
+    miPointer.x = x;
+    miPointer.y = y;
+    miPointer.pScreen = pScreen;
+
+    xE.u.u.type = MotionNotify;
+    xE.u.keyButtonPointer.rootX = x;
+    xE.u.keyButtonPointer.rootY = y;
+    xE.u.keyButtonPointer.time = time;
+    (*pScreenPriv->screenFuncs->EnqueueEvent) (&xE);
+
+    end = miPointer.history_end;
+    start = miPointer.history_start;
+    prev = end - 1;
+    if (end == 0)
+	prev = MOTION_SIZE - 1;
+    history = &miPointer.history[prev];
+    if (end == start || history->event.time != time)
+    {
+    	history = &miPointer.history[end];
+    	if (++end == MOTION_SIZE) 
+	    end = 0;
+    	if (end == start)
+    	{
+	    start = end + 1;
+	    if (start == MOTION_SIZE)
+	    	start = 0;
+	    miPointer.history_start = start;
+    	}
+    	miPointer.history_end = end;
+    }
+    history->event.x = x;
+    history->event.y = y;
+    history->event.time = time;
+    history->pScreen = pScreen;
+}
+
+void
+miRegisterPointerDevice (pScreen, pDevice)
+    ScreenPtr	pScreen;
+    DevicePtr	pDevice;
+{
+    miPointer.pPointer = pDevice;
+}