_X_EXPORT int
PictureAddFilter (ScreenPtr pScreen,
char *filter,
PictFilterValidateParamsProcPtr ValidateParams)
{
PictureScreenPtr ps = GetPictureScreen(pScreen);
int id = PictureGetFilterId (filter, -1, TRUE);
int i;
PictFilterPtr filters;
if (id < 0)
return -1;
/*
* It's an error to attempt to reregister a filter
*/
for (i = 0; i < ps->nfilters; i++)
if (ps->filters[i].id == id)
return -1;
if (ps->filters)
filters = xrealloc (ps->filters, (ps->nfilters + 1) * sizeof (PictFilterRec));
else
filters = xalloc (sizeof (PictFilterRec));
if (!filters)
return -1;
ps->filters = filters;
i = ps->nfilters++;
ps->filters[i].name = PictureGetFilterName (id);
ps->filters[i].id = id;
ps->filters[i].ValidateParams = ValidateParams;
return id;
}
_X_EXPORT Bool
PictureSetFilterAlias (ScreenPtr pScreen, char *filter, char *alias)
{
PictureScreenPtr ps = GetPictureScreen(pScreen);
int filter_id = PictureGetFilterId (filter, -1, FALSE);
int alias_id = PictureGetFilterId (alias, -1, TRUE);
int i;
if (filter_id < 0 || alias_id < 0)
return FALSE;
for (i = 0; i < ps->nfilterAliases; i++)
if (ps->filterAliases[i].alias_id == alias_id)
break;
if (i == ps->nfilterAliases)
{
PictFilterAliasPtr aliases;
if (ps->filterAliases)
aliases = xrealloc (ps->filterAliases,
(ps->nfilterAliases + 1) *
sizeof (PictFilterAliasRec));
else
aliases = xalloc (sizeof (PictFilterAliasRec));
if (!aliases)
return FALSE;
ps->filterAliases = aliases;
ps->filterAliases[i].alias = PictureGetFilterName (alias_id);
ps->filterAliases[i].alias_id = alias_id;
ps->nfilterAliases++;
}
ps->filterAliases[i].filter_id = filter_id;
return TRUE;
}
static void
cwValidatePicture(PicturePtr pPicture, Mask mask)
{
DrawablePtr pDrawable = pPicture->pDrawable;
ScreenPtr pScreen = pDrawable->pScreen;
cwPsDecl(pScreen);
cwPicturePrivate;
cwPsUnwrap(ValidatePicture);
/*
* Must call ValidatePicture to ensure pPicture->pCompositeClip is valid
*/
(*ps->ValidatePicture) (pPicture, mask);
if (!cwDrawableIsRedirWindow(pDrawable)) {
if (pPicturePrivate)
cwDestroyPicturePrivate(pPicture);
}
else {
PicturePtr pBackingPicture;
DrawablePtr pBackingDrawable;
int x_off, y_off;
pBackingDrawable = cwGetBackingDrawable(pDrawable, &x_off, &y_off);
if (pPicturePrivate &&
pPicturePrivate->pBackingPicture->pDrawable != pBackingDrawable) {
cwDestroyPicturePrivate(pPicture);
pPicturePrivate = 0;
}
if (!pPicturePrivate) {
pPicturePrivate = cwCreatePicturePrivate(pPicture);
if (!pPicturePrivate) {
cwPsWrap(ValidatePicture, cwValidatePicture);
return;
}
}
pBackingPicture = pPicturePrivate->pBackingPicture;
/*
* Always copy transform and filters because there's no
* indication of when they've changed
*/
SetPictureTransform(pBackingPicture, pPicture->transform);
if (pBackingPicture->filter != pPicture->filter ||
pPicture->filter_nparams > 0) {
char *filter = PictureGetFilterName(pPicture->filter);
SetPictureFilter(pBackingPicture,
filter, strlen(filter),
pPicture->filter_params, pPicture->filter_nparams);
}
pPicturePrivate->stateChanges |= mask;
if (pPicturePrivate->serialNumber != pDrawable->serialNumber ||
(pPicturePrivate->
stateChanges & (CPClipXOrigin | CPClipYOrigin | CPClipMask))) {
SetPictureClipRegion(pBackingPicture, x_off - pDrawable->x,
y_off - pDrawable->y,
pPicture->pCompositeClip);
pPicturePrivate->serialNumber = pDrawable->serialNumber;
pPicturePrivate->stateChanges &=
~(CPClipXOrigin | CPClipYOrigin | CPClipMask);
}
CopyPicture(pPicture, pPicturePrivate->stateChanges, pBackingPicture);
ValidatePicture(pBackingPicture);
}
cwPsWrap(ValidatePicture, cwValidatePicture);
}
