363 lines
11 KiB
C
363 lines
11 KiB
C
/*
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*
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* Copyright © 2002 Keith Packard, member of The XFree86 Project, Inc.
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*
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* Permission to use, copy, modify, distribute, and sell this software and its
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* documentation for any purpose is hereby granted without fee, provided that
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* the above copyright notice appear in all copies and that both that
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* copyright notice and this permission notice appear in supporting
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* documentation, and that the name of Keith Packard not be used in
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* advertising or publicity pertaining to distribution of the software without
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* specific, written prior permission. Keith Packard makes no
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* representations about the suitability of this software for any purpose. It
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* is provided "as is" without express or implied warranty.
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*
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* KEITH PACKARD DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
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* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
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* EVENT SHALL KEITH PACKARD BE LIABLE FOR ANY SPECIAL, INDIRECT OR
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* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
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* DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
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* TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
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* PERFORMANCE OF THIS SOFTWARE.
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*/
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/*
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* Animated cursors for X. Not specific to Render in any way, but
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* stuck there because Render has the other cool cursor extension.
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* Besides, everyone has Render.
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*
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* Implemented as a simple layer over the core cursor code; it
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* creates composite cursors out of a set of static cursors and
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* delta times between each image.
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*/
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#ifdef HAVE_DIX_CONFIG_H
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#include <dix-config.h>
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#endif
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#include <X11/X.h>
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#include <X11/Xmd.h>
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#include "servermd.h"
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#include "scrnintstr.h"
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#include "dixstruct.h"
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#include "cursorstr.h"
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#include "dixfontstr.h"
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#include "opaque.h"
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#include "picturestr.h"
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#include "inputstr.h"
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#include "xace.h"
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typedef struct _AnimCurElt {
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CursorPtr pCursor; /* cursor to show */
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CARD32 delay; /* in ms */
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} AnimCurElt;
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typedef struct _AnimCur {
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int nelt; /* number of elements in the elts array */
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AnimCurElt *elts; /* actually allocated right after the structure */
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OsTimerPtr timer;
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} AnimCurRec, *AnimCurPtr;
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typedef struct _AnimScrPriv {
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CloseScreenProcPtr CloseScreen;
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CursorLimitsProcPtr CursorLimits;
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DisplayCursorProcPtr DisplayCursor;
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SetCursorPositionProcPtr SetCursorPosition;
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RealizeCursorProcPtr RealizeCursor;
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UnrealizeCursorProcPtr UnrealizeCursor;
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RecolorCursorProcPtr RecolorCursor;
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} AnimCurScreenRec, *AnimCurScreenPtr;
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static unsigned char empty[4];
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static CursorBits animCursorBits = {
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empty, empty, 2, 1, 1, 0, 0, 1
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};
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static DevPrivateKeyRec AnimCurScreenPrivateKeyRec;
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#define IsAnimCur(c) ((c) && ((c)->bits == &animCursorBits))
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#define GetAnimCur(c) ((AnimCurPtr) ((((char *)(c) + CURSOR_REC_SIZE))))
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#define GetAnimCurScreen(s) ((AnimCurScreenPtr)dixLookupPrivate(&(s)->devPrivates, &AnimCurScreenPrivateKeyRec))
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#define Wrap(as,s,elt,func) (((as)->elt = (s)->elt), (s)->elt = func)
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#define Unwrap(as,s,elt) ((s)->elt = (as)->elt)
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static Bool
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AnimCurCloseScreen(ScreenPtr pScreen)
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{
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AnimCurScreenPtr as = GetAnimCurScreen(pScreen);
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Bool ret;
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Unwrap(as, pScreen, CloseScreen);
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Unwrap(as, pScreen, CursorLimits);
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Unwrap(as, pScreen, DisplayCursor);
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Unwrap(as, pScreen, SetCursorPosition);
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Unwrap(as, pScreen, RealizeCursor);
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Unwrap(as, pScreen, UnrealizeCursor);
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Unwrap(as, pScreen, RecolorCursor);
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ret = (*pScreen->CloseScreen) (pScreen);
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return ret;
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}
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static void
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AnimCurCursorLimits(DeviceIntPtr pDev,
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ScreenPtr pScreen,
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CursorPtr pCursor, BoxPtr pHotBox, BoxPtr pTopLeftBox)
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{
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AnimCurScreenPtr as = GetAnimCurScreen(pScreen);
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Unwrap(as, pScreen, CursorLimits);
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if (IsAnimCur(pCursor)) {
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AnimCurPtr ac = GetAnimCur(pCursor);
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(*pScreen->CursorLimits) (pDev, pScreen, ac->elts[0].pCursor,
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pHotBox, pTopLeftBox);
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}
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else {
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(*pScreen->CursorLimits) (pDev, pScreen, pCursor, pHotBox, pTopLeftBox);
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}
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Wrap(as, pScreen, CursorLimits, AnimCurCursorLimits);
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}
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/*
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* The cursor animation timer has expired, go display any relevant cursor changes
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* and compute a new timeout value
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*/
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static CARD32
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AnimCurTimerNotify(OsTimerPtr timer, CARD32 now, void *arg)
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{
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DeviceIntPtr dev = arg;
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ScreenPtr pScreen = dev->spriteInfo->anim.pScreen;
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AnimCurScreenPtr as = GetAnimCurScreen(pScreen);
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AnimCurPtr ac = GetAnimCur(dev->spriteInfo->sprite->current);
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int elt = (dev->spriteInfo->anim.elt + 1) % ac->nelt;
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DisplayCursorProcPtr DisplayCursor = pScreen->DisplayCursor;
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/*
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* Not a simple Unwrap/Wrap as this isn't called along the DisplayCursor
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* wrapper chain.
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*/
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pScreen->DisplayCursor = as->DisplayCursor;
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(void) (*pScreen->DisplayCursor) (dev, pScreen, ac->elts[elt].pCursor);
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as->DisplayCursor = pScreen->DisplayCursor;
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pScreen->DisplayCursor = DisplayCursor;
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dev->spriteInfo->anim.elt = elt;
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dev->spriteInfo->anim.pCursor = ac->elts[elt].pCursor;
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return ac->elts[elt].delay;
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}
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static void
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AnimCurCancelTimer(DeviceIntPtr pDev)
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{
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CursorPtr cur = pDev->spriteInfo->sprite->current;
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if (IsAnimCur(cur))
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TimerCancel(GetAnimCur(cur)->timer);
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}
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static Bool
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AnimCurDisplayCursor(DeviceIntPtr pDev, ScreenPtr pScreen, CursorPtr pCursor)
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{
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AnimCurScreenPtr as = GetAnimCurScreen(pScreen);
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Bool ret = TRUE;
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if (IsFloating(pDev))
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return FALSE;
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Unwrap(as, pScreen, DisplayCursor);
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if (IsAnimCur(pCursor)) {
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if (pCursor != pDev->spriteInfo->sprite->current) {
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AnimCurPtr ac = GetAnimCur(pCursor);
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AnimCurCancelTimer(pDev);
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ret = (*pScreen->DisplayCursor) (pDev, pScreen,
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ac->elts[0].pCursor);
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if (ret) {
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pDev->spriteInfo->anim.elt = 0;
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pDev->spriteInfo->anim.pCursor = pCursor;
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pDev->spriteInfo->anim.pScreen = pScreen;
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ac->timer = TimerSet(ac->timer, 0, ac->elts[0].delay,
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AnimCurTimerNotify, pDev);
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}
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}
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}
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else {
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AnimCurCancelTimer(pDev);
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pDev->spriteInfo->anim.pCursor = 0;
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pDev->spriteInfo->anim.pScreen = 0;
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ret = (*pScreen->DisplayCursor) (pDev, pScreen, pCursor);
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}
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Wrap(as, pScreen, DisplayCursor, AnimCurDisplayCursor);
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return ret;
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}
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static Bool
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AnimCurSetCursorPosition(DeviceIntPtr pDev,
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ScreenPtr pScreen, int x, int y, Bool generateEvent)
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{
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AnimCurScreenPtr as = GetAnimCurScreen(pScreen);
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Bool ret;
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Unwrap(as, pScreen, SetCursorPosition);
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if (pDev->spriteInfo->anim.pCursor) {
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pDev->spriteInfo->anim.pScreen = pScreen;
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}
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ret = (*pScreen->SetCursorPosition) (pDev, pScreen, x, y, generateEvent);
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Wrap(as, pScreen, SetCursorPosition, AnimCurSetCursorPosition);
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return ret;
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}
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static Bool
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AnimCurRealizeCursor(DeviceIntPtr pDev, ScreenPtr pScreen, CursorPtr pCursor)
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{
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AnimCurScreenPtr as = GetAnimCurScreen(pScreen);
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Bool ret;
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Unwrap(as, pScreen, RealizeCursor);
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if (IsAnimCur(pCursor))
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ret = TRUE;
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else
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ret = (*pScreen->RealizeCursor) (pDev, pScreen, pCursor);
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Wrap(as, pScreen, RealizeCursor, AnimCurRealizeCursor);
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return ret;
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}
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static Bool
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AnimCurUnrealizeCursor(DeviceIntPtr pDev, ScreenPtr pScreen, CursorPtr pCursor)
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{
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AnimCurScreenPtr as = GetAnimCurScreen(pScreen);
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Bool ret;
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Unwrap(as, pScreen, UnrealizeCursor);
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if (IsAnimCur(pCursor)) {
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AnimCurPtr ac = GetAnimCur(pCursor);
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int i;
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if (pScreen->myNum == 0)
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for (i = 0; i < ac->nelt; i++)
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FreeCursor(ac->elts[i].pCursor, 0);
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ret = TRUE;
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}
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else
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ret = (*pScreen->UnrealizeCursor) (pDev, pScreen, pCursor);
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Wrap(as, pScreen, UnrealizeCursor, AnimCurUnrealizeCursor);
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return ret;
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}
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static void
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AnimCurRecolorCursor(DeviceIntPtr pDev,
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ScreenPtr pScreen, CursorPtr pCursor, Bool displayed)
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{
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AnimCurScreenPtr as = GetAnimCurScreen(pScreen);
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Unwrap(as, pScreen, RecolorCursor);
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if (IsAnimCur(pCursor)) {
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AnimCurPtr ac = GetAnimCur(pCursor);
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int i;
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for (i = 0; i < ac->nelt; i++)
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(*pScreen->RecolorCursor) (pDev, pScreen, ac->elts[i].pCursor,
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displayed &&
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pDev->spriteInfo->anim.elt == i);
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}
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else
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(*pScreen->RecolorCursor) (pDev, pScreen, pCursor, displayed);
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Wrap(as, pScreen, RecolorCursor, AnimCurRecolorCursor);
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}
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Bool
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AnimCurInit(ScreenPtr pScreen)
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{
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AnimCurScreenPtr as;
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if (!dixRegisterPrivateKey(&AnimCurScreenPrivateKeyRec, PRIVATE_SCREEN,
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sizeof(AnimCurScreenRec)))
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return FALSE;
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as = GetAnimCurScreen(pScreen);
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Wrap(as, pScreen, CloseScreen, AnimCurCloseScreen);
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Wrap(as, pScreen, CursorLimits, AnimCurCursorLimits);
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Wrap(as, pScreen, DisplayCursor, AnimCurDisplayCursor);
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Wrap(as, pScreen, SetCursorPosition, AnimCurSetCursorPosition);
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Wrap(as, pScreen, RealizeCursor, AnimCurRealizeCursor);
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Wrap(as, pScreen, UnrealizeCursor, AnimCurUnrealizeCursor);
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Wrap(as, pScreen, RecolorCursor, AnimCurRecolorCursor);
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return TRUE;
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}
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int
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AnimCursorCreate(CursorPtr *cursors, CARD32 *deltas, int ncursor,
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CursorPtr *ppCursor, ClientPtr client, XID cid)
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{
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CursorPtr pCursor;
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int rc = BadAlloc, i;
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AnimCurPtr ac;
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for (i = 0; i < screenInfo.numScreens; i++)
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if (!GetAnimCurScreen(screenInfo.screens[i]))
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return BadImplementation;
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for (i = 0; i < ncursor; i++)
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if (IsAnimCur(cursors[i]))
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return BadMatch;
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pCursor = (CursorPtr) calloc(CURSOR_REC_SIZE +
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sizeof(AnimCurRec) +
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ncursor * sizeof(AnimCurElt), 1);
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if (!pCursor)
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return rc;
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dixInitPrivates(pCursor, pCursor + 1, PRIVATE_CURSOR);
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pCursor->bits = &animCursorBits;
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pCursor->refcnt = 1;
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pCursor->foreRed = cursors[0]->foreRed;
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pCursor->foreGreen = cursors[0]->foreGreen;
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pCursor->foreBlue = cursors[0]->foreBlue;
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pCursor->backRed = cursors[0]->backRed;
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pCursor->backGreen = cursors[0]->backGreen;
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pCursor->backBlue = cursors[0]->backBlue;
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pCursor->id = cid;
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ac = GetAnimCur(pCursor);
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ac->timer = TimerSet(NULL, 0, 0, AnimCurTimerNotify, NULL);
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/* security creation/labeling check */
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if (ac->timer)
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rc = XaceHook(XACE_RESOURCE_ACCESS, client, cid, RT_CURSOR, pCursor,
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RT_NONE, NULL, DixCreateAccess);
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if (rc != Success) {
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TimerFree(ac->timer);
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dixFiniPrivates(pCursor, PRIVATE_CURSOR);
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free(pCursor);
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return rc;
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}
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/*
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* Fill in the AnimCurRec
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*/
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animCursorBits.refcnt++;
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ac->nelt = ncursor;
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ac->elts = (AnimCurElt *) (ac + 1);
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for (i = 0; i < ncursor; i++) {
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ac->elts[i].pCursor = RefCursor(cursors[i]);
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ac->elts[i].delay = deltas[i];
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}
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*ppCursor = pCursor;
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return Success;
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}
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