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RANDR: Fail softly on GetPanning if the screen can't do it. 

Just return a zeroed-out reply in that case.  This is unambiguous, and
distinguishes "you didn't name a CRTC" from "you named a CRTC that can't
do panning".
This commit is contained in:
Adam Jackson 2009-02-17 12:59:16 -05:00
parent b2ceea3635
commit 1230939965
1 changed files with 17 additions and 16 deletions
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33
randr/rrcrtc.c
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@ -1038,30 +1038,31 @@ ProcRRGetPanning (ClientPtr client)
pScreen = crtc->pScreen;
pScrPriv = rrGetScrPriv(pScreen);
if (!pScrPriv || !pScrPriv->rrGetPanning)
if (!pScrPriv)
return RRErrorBase + BadRRCrtc;
memset(&rep, 0, sizeof(rep));
rep.type = X_Reply;
rep.status = RRSetConfigSuccess;
rep.sequenceNumber = client->sequence;
rep.length = 1;
rep.timestamp = pScrPriv->lastSetTime.milliseconds;
if (! pScrPriv->rrGetPanning (pScreen, crtc, &total, &tracking, border))
return RRErrorBase + BadRRCrtc;
rep.left = total.x1;
rep.top = total.y1;
rep.width = total.x2 - total.x1;
rep.height = total.y2 - total.y1;
rep.track_left = tracking.x1;
rep.track_top = tracking.y1;
rep.track_width = tracking.x2 - tracking.x1;
rep.track_height = tracking.y2 - tracking.y1;
rep.border_left = border[0];
rep.border_top = border[1];
rep.border_right = border[2];
rep.border_bottom = border[3];
if (pScrPriv->rrGetPanning &&
pScrPriv->rrGetPanning (pScreen, crtc, &total, &tracking, border)) {
rep.left = total.x1;
rep.top = total.y1;
rep.width = total.x2 - total.x1;
rep.height = total.y2 - total.y1;
rep.track_left = tracking.x1;
rep.track_top = tracking.y1;
rep.track_width = tracking.x2 - tracking.x1;
rep.track_height = tracking.y2 - tracking.y1;
rep.border_left = border[0];
rep.border_top = border[1];
rep.border_right = border[2];
rep.border_bottom = border[3];
}
if (client->swapped) {
swaps(&rep.sequenceNumber, n);