402 lines
11 KiB
C
402 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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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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} AnimCurRec, *AnimCurPtr;
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typedef struct _AnimScrPriv {
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CursorPtr pCursor;
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int elt;
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CARD32 time;
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CloseScreenProcPtr CloseScreen;
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ScreenBlockHandlerProcPtr BlockHandler;
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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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typedef struct _AnimCurState {
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CursorPtr pCursor;
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ScreenPtr pScreen;
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int elt;
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CARD32 time;
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} AnimCurStateRec, *AnimCurStatePtr;
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static AnimCurStateRec animCurState;
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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 int AnimCurScreenPrivateIndex = -1;
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static int AnimCurGeneration;
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#define IsAnimCur(c) ((c)->bits == &animCursorBits)
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#define GetAnimCur(c) ((AnimCurPtr) ((c) + 1))
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#define GetAnimCurScreen(s) ((AnimCurScreenPtr) ((s)->devPrivates[AnimCurScreenPrivateIndex].ptr))
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#define GetAnimCurScreenIfSet(s) ((AnimCurScreenPrivateIndex != -1) ? GetAnimCurScreen(s) : NULL)
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#define SetAnimCurScreen(s,p) ((s)->devPrivates[AnimCurScreenPrivateIndex].ptr = (pointer) (p))
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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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AnimCurDisplayCursor (ScreenPtr pScreen,
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CursorPtr pCursor);
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static Bool
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AnimCurSetCursorPosition (ScreenPtr pScreen,
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int x,
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int y,
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Bool generateEvent);
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static Bool
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AnimCurCloseScreen (int index, 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, BlockHandler);
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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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SetAnimCurScreen(pScreen,0);
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ret = (*pScreen->CloseScreen) (index, pScreen);
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xfree (as);
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if (index == 0)
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AnimCurScreenPrivateIndex = -1;
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return ret;
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}
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static void
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AnimCurCursorLimits (ScreenPtr pScreen,
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CursorPtr pCursor,
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BoxPtr pHotBox,
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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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{
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AnimCurPtr ac = GetAnimCur(pCursor);
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(*pScreen->CursorLimits) (pScreen, ac->elts[0].pCursor, pHotBox, pTopLeftBox);
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}
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else
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{
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(*pScreen->CursorLimits) (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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* This has to be a screen block handler instead of a generic
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* block handler so that it is well ordered with respect to the DRI
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* block handler responsible for releasing the hardware to DRI clients
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*/
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static void
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AnimCurScreenBlockHandler (int screenNum,
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pointer blockData,
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pointer pTimeout,
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pointer pReadmask)
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{
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ScreenPtr pScreen = screenInfo.screens[screenNum];
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AnimCurScreenPtr as = GetAnimCurScreen(pScreen);
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if (pScreen == animCurState.pScreen)
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{
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CARD32 now = GetTimeInMillis ();
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if ((INT32) (now - animCurState.time) >= 0)
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{
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AnimCurPtr ac = GetAnimCur(animCurState.pCursor);
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int elt = (animCurState.elt + 1) % ac->nelt;
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DisplayCursorProcPtr DisplayCursor;
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/*
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* Not a simple Unwrap/Wrap as this
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* isn't called along the DisplayCursor
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* wrapper chain.
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*/
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DisplayCursor = pScreen->DisplayCursor;
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pScreen->DisplayCursor = as->DisplayCursor;
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(void) (*pScreen->DisplayCursor) (pScreen, ac->elts[elt].pCursor);
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as->DisplayCursor = pScreen->DisplayCursor;
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pScreen->DisplayCursor = DisplayCursor;
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animCurState.elt = elt;
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animCurState.time = now + ac->elts[elt].delay;
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}
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AdjustWaitForDelay (pTimeout, animCurState.time - now);
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}
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Unwrap (as, pScreen, BlockHandler);
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(*pScreen->BlockHandler) (screenNum, blockData, pTimeout, pReadmask);
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Wrap (as, pScreen, BlockHandler, AnimCurScreenBlockHandler);
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}
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static Bool
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AnimCurDisplayCursor (ScreenPtr pScreen,
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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, DisplayCursor);
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if (IsAnimCur(pCursor))
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{
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if (pCursor != animCurState.pCursor)
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{
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AnimCurPtr ac = GetAnimCur(pCursor);
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ret = (*pScreen->DisplayCursor) (pScreen, ac->elts[0].pCursor);
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if (ret)
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{
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animCurState.elt = 0;
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animCurState.time = GetTimeInMillis () + ac->elts[0].delay;
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animCurState.pCursor = pCursor;
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animCurState.pScreen = pScreen;
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}
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}
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else
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ret = TRUE;
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}
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else
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{
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animCurState.pCursor = 0;
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animCurState.pScreen = 0;
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ret = (*pScreen->DisplayCursor) (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 (ScreenPtr pScreen,
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int x,
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int y,
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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 (animCurState.pCursor)
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animCurState.pScreen = pScreen;
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ret = (*pScreen->SetCursorPosition) (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 (ScreenPtr pScreen,
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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) (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 (ScreenPtr pScreen,
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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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{
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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) (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 (ScreenPtr pScreen,
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CursorPtr pCursor,
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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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{
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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) (pScreen, ac->elts[i].pCursor,
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displayed &&
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animCurState.elt == i);
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}
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else
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(*pScreen->RecolorCursor) (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 (AnimCurGeneration != serverGeneration)
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{
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AnimCurScreenPrivateIndex = AllocateScreenPrivateIndex ();
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if (AnimCurScreenPrivateIndex < 0)
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return FALSE;
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AnimCurGeneration = serverGeneration;
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animCurState.pCursor = 0;
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animCurState.pScreen = 0;
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animCurState.elt = 0;
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animCurState.time = 0;
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}
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as = (AnimCurScreenPtr) xalloc (sizeof (AnimCurScreenRec));
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if (!as)
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return FALSE;
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Wrap(as, pScreen, CloseScreen, AnimCurCloseScreen);
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Wrap(as, pScreen, BlockHandler, AnimCurScreenBlockHandler);
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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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SetAnimCurScreen(pScreen,as);
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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, CursorPtr *ppCursor)
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{
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CursorPtr pCursor;
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int i;
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AnimCurPtr ac;
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for (i = 0; i < screenInfo.numScreens; i++)
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if (!GetAnimCurScreenIfSet (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) xalloc (sizeof (CursorRec) +
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sizeof (AnimCurRec) +
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ncursor * sizeof (AnimCurElt));
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if (!pCursor)
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return BadAlloc;
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pCursor->bits = &animCursorBits;
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animCursorBits.refcnt++;
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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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/*
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* Fill in the AnimCurRec
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*/
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ac = GetAnimCur (pCursor);
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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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{
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cursors[i]->refcnt++;
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ac->elts[i].pCursor = 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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