xserver-multidpi/render/animcur.c
Paulo Cesar Pereira de Andrade 49f77fff14 Rework symbol visibility for easier maintenance
Save in a few special cases, _X_EXPORT should not be used in C source
files. Instead, it should be used in headers, and the proper C source
include that header. Some special cases are symbols that need to be
shared between modules, but not expected to be used by external drivers,
and symbols that are accessible via LoaderSymbol/dlopen.

  This patch also adds conditionally some new sdk header files, depending
on extensions enabled. These files were added to match pattern for
other extensions/modules, that is, have the headers "deciding" symbol
visibility in the sdk. These headers are:
o Xext/panoramiXsrv.h, Xext/panoramiX.h
o fbpict.h (unconditionally)
o vidmodeproc.h
o mioverlay.h (unconditionally, used only by xaa)
o xfixes.h (unconditionally, symbols required by dri2)

  LoaderSymbol and similar functions now don't have different prototypes,
in loaderProcs.h and xf86Module.h, so that both headers can be included,
without the need of defining IN_LOADER.

  xf86NewInputDevice() device prototype readded to xf86Xinput.h, but
not exported (and with a comment about it).
2008-12-03 05:43:34 -02:00

442 lines
12 KiB
C

/*
*
* Copyright © 2002 Keith Packard, member of The XFree86 Project, Inc.
*
* 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, and that the name of Keith Packard not be used in
* advertising or publicity pertaining to distribution of the software without
* specific, written prior permission. Keith Packard makes no
* representations about the suitability of this software for any purpose. It
* is provided "as is" without express or implied warranty.
*
* KEITH PACKARD DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
* EVENT SHALL KEITH PACKARD BE LIABLE FOR ANY SPECIAL, INDIRECT OR
* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
* DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
* TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
* PERFORMANCE OF THIS SOFTWARE.
*/
/*
* Animated cursors for X. Not specific to Render in any way, but
* stuck there because Render has the other cool cursor extension.
* Besides, everyone has Render.
*
* Implemented as a simple layer over the core cursor code; it
* creates composite cursors out of a set of static cursors and
* delta times between each image.
*/
#ifdef HAVE_DIX_CONFIG_H
#include <dix-config.h>
#endif
#include <X11/X.h>
#include <X11/Xmd.h>
#include "servermd.h"
#include "scrnintstr.h"
#include "dixstruct.h"
#include "cursorstr.h"
#include "dixfontstr.h"
#include "opaque.h"
#include "picturestr.h"
#include "inputstr.h"
#include "xace.h"
typedef struct _AnimCurElt {
CursorPtr pCursor; /* cursor to show */
CARD32 delay; /* in ms */
} AnimCurElt;
typedef struct _AnimCur {
int nelt; /* number of elements in the elts array */
AnimCurElt *elts; /* actually allocated right after the structure */
} AnimCurRec, *AnimCurPtr;
typedef struct _AnimScrPriv {
CursorPtr pCursor;
int elt;
CARD32 time;
CloseScreenProcPtr CloseScreen;
ScreenBlockHandlerProcPtr BlockHandler;
CursorLimitsProcPtr CursorLimits;
DisplayCursorProcPtr DisplayCursor;
SetCursorPositionProcPtr SetCursorPosition;
RealizeCursorProcPtr RealizeCursor;
UnrealizeCursorProcPtr UnrealizeCursor;
RecolorCursorProcPtr RecolorCursor;
} AnimCurScreenRec, *AnimCurScreenPtr;
typedef struct _AnimCurState {
CursorPtr pCursor;
ScreenPtr pScreen;
int elt;
CARD32 time;
} AnimCurStateRec, *AnimCurStatePtr;
/* What a waste. But we need an API change to alloc it per device only. */
static AnimCurStateRec animCurState[MAXDEVICES];
static unsigned char empty[4];
static CursorBits animCursorBits = {
empty, empty, 2, 1, 1, 0, 0, 1
};
static int AnimCurGeneration;
static int AnimCurScreenPrivateKeyIndex;
static DevPrivateKey AnimCurScreenPrivateKey = &AnimCurScreenPrivateKeyIndex;
#define IsAnimCur(c) ((c) && ((c)->bits == &animCursorBits))
#define GetAnimCur(c) ((AnimCurPtr) ((c) + 1))
#define GetAnimCurScreen(s) ((AnimCurScreenPtr)dixLookupPrivate(&(s)->devPrivates, AnimCurScreenPrivateKey))
#define GetAnimCurScreenIfSet(s) GetAnimCurScreen(s)
#define SetAnimCurScreen(s,p) dixSetPrivate(&(s)->devPrivates, AnimCurScreenPrivateKey, p)
#define Wrap(as,s,elt,func) (((as)->elt = (s)->elt), (s)->elt = func)
#define Unwrap(as,s,elt) ((s)->elt = (as)->elt)
static Bool
AnimCurDisplayCursor (DeviceIntPtr pDev,
ScreenPtr pScreen,
CursorPtr pCursor);
static Bool
AnimCurSetCursorPosition (DeviceIntPtr pDev,
ScreenPtr pScreen,
int x,
int y,
Bool generateEvent);
static Bool
AnimCurCloseScreen (int index, ScreenPtr pScreen)
{
AnimCurScreenPtr as = GetAnimCurScreen(pScreen);
Bool ret;
Unwrap(as, pScreen, CloseScreen);
Unwrap(as, pScreen, BlockHandler);
Unwrap(as, pScreen, CursorLimits);
Unwrap(as, pScreen, DisplayCursor);
Unwrap(as, pScreen, SetCursorPosition);
Unwrap(as, pScreen, RealizeCursor);
Unwrap(as, pScreen, UnrealizeCursor);
Unwrap(as, pScreen, RecolorCursor);
SetAnimCurScreen(pScreen,0);
ret = (*pScreen->CloseScreen) (index, pScreen);
xfree (as);
return ret;
}
static void
AnimCurCursorLimits (DeviceIntPtr pDev,
ScreenPtr pScreen,
CursorPtr pCursor,
BoxPtr pHotBox,
BoxPtr pTopLeftBox)
{
AnimCurScreenPtr as = GetAnimCurScreen(pScreen);
Unwrap (as, pScreen, CursorLimits);
if (IsAnimCur(pCursor))
{
AnimCurPtr ac = GetAnimCur(pCursor);
(*pScreen->CursorLimits) (pDev, pScreen, ac->elts[0].pCursor,
pHotBox, pTopLeftBox);
}
else
{
(*pScreen->CursorLimits) (inputInfo.pointer, pScreen, pCursor,
pHotBox, pTopLeftBox);
}
Wrap (as, pScreen, CursorLimits, AnimCurCursorLimits);
}
/*
* This has to be a screen block handler instead of a generic
* block handler so that it is well ordered with respect to the DRI
* block handler responsible for releasing the hardware to DRI clients
*/
static void
AnimCurScreenBlockHandler (int screenNum,
pointer blockData,
pointer pTimeout,
pointer pReadmask)
{
ScreenPtr pScreen = screenInfo.screens[screenNum];
AnimCurScreenPtr as = GetAnimCurScreen(pScreen);
DeviceIntPtr dev;
CARD32 now = 0,
soonest = ~0; /* earliest time to wakeup again */
for (dev = inputInfo.devices; dev; dev = dev->next)
{
if (IsPointerDevice(dev) && pScreen == animCurState[dev->id].pScreen)
{
if (!now) now = GetTimeInMillis ();
if ((INT32) (now - animCurState[dev->id].time) >= 0)
{
AnimCurPtr ac = GetAnimCur(animCurState[dev->id].pCursor);
int elt = (animCurState[dev->id].elt + 1) % ac->nelt;
DisplayCursorProcPtr DisplayCursor;
/*
* Not a simple Unwrap/Wrap as this
* isn't called along the DisplayCursor
* wrapper chain.
*/
DisplayCursor = pScreen->DisplayCursor;
pScreen->DisplayCursor = as->DisplayCursor;
(void) (*pScreen->DisplayCursor) (dev,
pScreen,
ac->elts[elt].pCursor);
as->DisplayCursor = pScreen->DisplayCursor;
pScreen->DisplayCursor = DisplayCursor;
animCurState[dev->id].elt = elt;
animCurState[dev->id].time = now + ac->elts[elt].delay;
}
if (soonest > animCurState[dev->id].time)
soonest = animCurState[dev->id].time;
}
}
if (now)
AdjustWaitForDelay (pTimeout, soonest - now);
Unwrap (as, pScreen, BlockHandler);
(*pScreen->BlockHandler) (screenNum, blockData, pTimeout, pReadmask);
Wrap (as, pScreen, BlockHandler, AnimCurScreenBlockHandler);
}
static Bool
AnimCurDisplayCursor (DeviceIntPtr pDev,
ScreenPtr pScreen,
CursorPtr pCursor)
{
AnimCurScreenPtr as = GetAnimCurScreen(pScreen);
Bool ret;
Unwrap (as, pScreen, DisplayCursor);
if (IsAnimCur(pCursor))
{
if (pCursor != animCurState[pDev->id].pCursor)
{
AnimCurPtr ac = GetAnimCur(pCursor);
ret = (*pScreen->DisplayCursor)
(pDev, pScreen, ac->elts[0].pCursor);
if (ret)
{
animCurState[pDev->id].elt = 0;
animCurState[pDev->id].time = GetTimeInMillis () + ac->elts[0].delay;
animCurState[pDev->id].pCursor = pCursor;
animCurState[pDev->id].pScreen = pScreen;
}
}
else
ret = TRUE;
}
else
{
animCurState[pDev->id].pCursor = 0;
animCurState[pDev->id].pScreen = 0;
ret = (*pScreen->DisplayCursor) (pDev, pScreen, pCursor);
}
Wrap (as, pScreen, DisplayCursor, AnimCurDisplayCursor);
return ret;
}
static Bool
AnimCurSetCursorPosition (DeviceIntPtr pDev,
ScreenPtr pScreen,
int x,
int y,
Bool generateEvent)
{
AnimCurScreenPtr as = GetAnimCurScreen(pScreen);
Bool ret;
Unwrap (as, pScreen, SetCursorPosition);
if (animCurState[pDev->id].pCursor)
animCurState[pDev->id].pScreen = pScreen;
ret = (*pScreen->SetCursorPosition) (pDev, pScreen, x, y, generateEvent);
Wrap (as, pScreen, SetCursorPosition, AnimCurSetCursorPosition);
return ret;
}
static Bool
AnimCurRealizeCursor (DeviceIntPtr pDev,
ScreenPtr pScreen,
CursorPtr pCursor)
{
AnimCurScreenPtr as = GetAnimCurScreen(pScreen);
Bool ret;
Unwrap (as, pScreen, RealizeCursor);
if (IsAnimCur(pCursor))
ret = TRUE;
else
ret = (*pScreen->RealizeCursor) (pDev, pScreen, pCursor);
Wrap (as, pScreen, RealizeCursor, AnimCurRealizeCursor);
return ret;
}
static Bool
AnimCurUnrealizeCursor (DeviceIntPtr pDev,
ScreenPtr pScreen,
CursorPtr pCursor)
{
AnimCurScreenPtr as = GetAnimCurScreen(pScreen);
Bool ret;
Unwrap (as, pScreen, UnrealizeCursor);
if (IsAnimCur(pCursor))
{
AnimCurPtr ac = GetAnimCur(pCursor);
int i;
if (pScreen->myNum == 0)
for (i = 0; i < ac->nelt; i++)
FreeCursor (ac->elts[i].pCursor, 0);
ret = TRUE;
}
else
ret = (*pScreen->UnrealizeCursor) (pDev, pScreen, pCursor);
Wrap (as, pScreen, UnrealizeCursor, AnimCurUnrealizeCursor);
return ret;
}
static void
AnimCurRecolorCursor (DeviceIntPtr pDev,
ScreenPtr pScreen,
CursorPtr pCursor,
Bool displayed)
{
AnimCurScreenPtr as = GetAnimCurScreen(pScreen);
Unwrap (as, pScreen, RecolorCursor);
if (IsAnimCur(pCursor))
{
AnimCurPtr ac = GetAnimCur(pCursor);
int i;
for (i = 0; i < ac->nelt; i++)
(*pScreen->RecolorCursor) (pDev, pScreen, ac->elts[i].pCursor,
displayed &&
animCurState[pDev->id].elt == i);
}
else
(*pScreen->RecolorCursor) (pDev, pScreen, pCursor, displayed);
Wrap (as, pScreen, RecolorCursor, AnimCurRecolorCursor);
}
Bool
AnimCurInit (ScreenPtr pScreen)
{
AnimCurScreenPtr as;
if (AnimCurGeneration != serverGeneration)
{
int i;
AnimCurGeneration = serverGeneration;
for (i = 0; i < MAXDEVICES; i++) {
animCurState[i].pCursor = 0;
animCurState[i].pScreen = 0;
animCurState[i].elt = 0;
animCurState[i].time = 0;
}
}
as = (AnimCurScreenPtr) xalloc (sizeof (AnimCurScreenRec));
if (!as)
return FALSE;
Wrap(as, pScreen, CloseScreen, AnimCurCloseScreen);
Wrap(as, pScreen, BlockHandler, AnimCurScreenBlockHandler);
Wrap(as, pScreen, CursorLimits, AnimCurCursorLimits);
Wrap(as, pScreen, DisplayCursor, AnimCurDisplayCursor);
Wrap(as, pScreen, SetCursorPosition, AnimCurSetCursorPosition);
Wrap(as, pScreen, RealizeCursor, AnimCurRealizeCursor);
Wrap(as, pScreen, UnrealizeCursor, AnimCurUnrealizeCursor);
Wrap(as, pScreen, RecolorCursor, AnimCurRecolorCursor);
SetAnimCurScreen(pScreen,as);
return TRUE;
}
int
AnimCursorCreate (CursorPtr *cursors, CARD32 *deltas, int ncursor, CursorPtr *ppCursor, ClientPtr client, XID cid)
{
CursorPtr pCursor;
int rc, i;
AnimCurPtr ac;
for (i = 0; i < screenInfo.numScreens; i++)
if (!GetAnimCurScreenIfSet (screenInfo.screens[i]))
return BadImplementation;
for (i = 0; i < ncursor; i++)
if (IsAnimCur (cursors[i]))
return BadMatch;
pCursor = (CursorPtr) xalloc (sizeof (CursorRec) +
sizeof (AnimCurRec) +
ncursor * sizeof (AnimCurElt));
if (!pCursor)
return BadAlloc;
pCursor->bits = &animCursorBits;
pCursor->refcnt = 1;
pCursor->foreRed = cursors[0]->foreRed;
pCursor->foreGreen = cursors[0]->foreGreen;
pCursor->foreBlue = cursors[0]->foreBlue;
pCursor->backRed = cursors[0]->backRed;
pCursor->backGreen = cursors[0]->backGreen;
pCursor->backBlue = cursors[0]->backBlue;
pCursor->id = cid;
pCursor->devPrivates = NULL;
/* security creation/labeling check */
rc = XaceHook(XACE_RESOURCE_ACCESS, client, cid, RT_CURSOR, pCursor,
RT_NONE, NULL, DixCreateAccess);
if (rc != Success) {
dixFreePrivates(pCursor->devPrivates);
xfree(pCursor);
return rc;
}
/*
* Fill in the AnimCurRec
*/
animCursorBits.refcnt++;
ac = GetAnimCur (pCursor);
ac->nelt = ncursor;
ac->elts = (AnimCurElt *) (ac + 1);
for (i = 0; i < ncursor; i++)
{
cursors[i]->refcnt++;
ac->elts[i].pCursor = cursors[i];
ac->elts[i].delay = deltas[i];
}
*ppCursor = pCursor;
return Success;
}