Bool
CreateGCperDepth(int screenNum)
{
register int i;
register ScreenPtr pScreen;
DepthPtr pDepth;
GCPtr *ppGC;
pScreen = screenInfo.screens[screenNum];
pScreen->rgf = 0;
ppGC = pScreen->GCperDepth;
/* do depth 1 separately because it's not included in list */
if (!(ppGC[0] = CreateScratchGC(pScreen, 1)))
return FALSE;
ppGC[0]->graphicsExposures = FALSE;
/* Make sure we don't overflow GCperDepth[] */
if( pScreen->numDepths > MAXFORMATS )
return FALSE;
pDepth = pScreen->allowedDepths;
for (i=0; i<pScreen->numDepths; i++, pDepth++)
{
if (!(ppGC[i+1] = CreateScratchGC(pScreen, pDepth->depth)))
{
for (; i >= 0; i--)
(void)FreeGC(ppGC[i], (XID)0);
return FALSE;
}
ppGC[i+1]->graphicsExposures = FALSE;
}
return TRUE;
}
/*
sets reasonable defaults
if we can get a pre-allocated one, use it and mark it as used.
if we can't, create one out of whole cloth (The Velveteen GC -- if
you use it often enough it will become real.)
*/
_X_EXPORT GCPtr
GetScratchGC(register unsigned depth, register ScreenPtr pScreen)
{
register int i;
register GCPtr pGC;
for (i=0; i<=pScreen->numDepths; i++)
if ( pScreen->GCperDepth[i]->depth == depth &&
!(pScreen->rgf & (1L << (i+1)))
)
{
pScreen->rgf |= (1L << (i+1));
pGC = (pScreen->GCperDepth[i]);
pGC->alu = GXcopy;
pGC->planemask = ~0;
pGC->serialNumber = 0;
pGC->fgPixel = 0;
pGC->bgPixel = 1;
pGC->lineWidth = 0;
pGC->lineStyle = LineSolid;
pGC->capStyle = CapButt;
pGC->joinStyle = JoinMiter;
pGC->fillStyle = FillSolid;
pGC->fillRule = EvenOddRule;
pGC->arcMode = ArcChord;
pGC->patOrg.x = 0;
pGC->patOrg.y = 0;
pGC->subWindowMode = ClipByChildren;
pGC->graphicsExposures = FALSE;
pGC->clipOrg.x = 0;
pGC->clipOrg.y = 0;
if (pGC->clientClipType != CT_NONE)
(*pGC->funcs->ChangeClip) (pGC, CT_NONE, NULL, 0);
pGC->stateChanges = (1 << (GCLastBit+1)) - 1;
return pGC;
}
/* if we make it this far, need to roll our own */
pGC = CreateScratchGC(pScreen, depth);
if (pGC)
pGC->graphicsExposures = FALSE;
return pGC;
}
/*
sets reasonable defaults
if we can get a pre-allocated one, use it and mark it as used.
if we can't, create one out of whole cloth (The Velveteen GC -- if
you use it often enough it will become real.)
*/
GCPtr
GetScratchGC(unsigned depth, ScreenPtr pScreen)
{
int i;
GCPtr pGC;
for (i = 0; i <= pScreen->numDepths; i++) {
pGC = pScreen->GCperDepth[i];
if (pGC && pGC->depth == depth && !pGC->scratch_inuse) {
pGC->scratch_inuse = TRUE;
pGC->alu = GXcopy;
pGC->planemask = ~0;
pGC->serialNumber = 0;
pGC->fgPixel = 0;
pGC->bgPixel = 1;
pGC->lineWidth = 0;
pGC->lineStyle = LineSolid;
pGC->capStyle = CapButt;
pGC->joinStyle = JoinMiter;
pGC->fillStyle = FillSolid;
pGC->fillRule = EvenOddRule;
pGC->arcMode = ArcChord;
pGC->patOrg.x = 0;
pGC->patOrg.y = 0;
pGC->subWindowMode = ClipByChildren;
pGC->graphicsExposures = FALSE;
pGC->clipOrg.x = 0;
pGC->clipOrg.y = 0;
if (pGC->clientClip)
(*pGC->funcs->ChangeClip) (pGC, CT_NONE, NULL, 0);
pGC->stateChanges = GCAllBits;
return pGC;
}
}
/* if we make it this far, need to roll our own */
return CreateScratchGC(pScreen, depth);
}
