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xenocara/xserver/randr/randr.c
matthieu 889b860699 Importing xserver from X.Org 7.2RC2
2006-11-26 18:13:41 +00:00

1327 lines
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/*
*
* Copyright © 2000, Compaq Computer Corporation,
* Copyright © 2002, Hewlett Packard, Inc.
*
* Permission to use, copy, modify, distribute, and sell this software and its
* documentation for any purpose is hereby granted without fee, provided that
* the above copyright notice appear in all copies and that both that
* copyright notice and this permission notice appear in supporting
* documentation, and that the name of Compaq or HP not be used in advertising
* or publicity pertaining to distribution of the software without specific,
* written prior permission. HP makes no representations about the
* suitability of this software for any purpose. It is provided "as is"
* without express or implied warranty.
*
* HP DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL HP
* BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
* OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
* CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*
* Author: Jim Gettys, HP Labs, Hewlett-Packard, Inc.
*/
#define NEED_REPLIES
#define NEED_EVENTS
#ifdef HAVE_DIX_CONFIG_H
#include <dix-config.h>
#endif
#include <X11/X.h>
#include <X11/Xproto.h>
#include "misc.h"
#include "os.h"
#include "dixstruct.h"
#include "resource.h"
#include "scrnintstr.h"
#include "windowstr.h"
#include "pixmapstr.h"
#include "extnsionst.h"
#include "servermd.h"
#include <X11/extensions/randr.h>
#include <X11/extensions/randrproto.h>
#include "randrstr.h"
#ifdef RENDER
#include <X11/extensions/render.h> /* we share subpixel order information */
#include "picturestr.h"
#endif
#include <X11/Xfuncproto.h>
/* From render.h */
#ifndef SubPixelUnknown
#define SubPixelUnknown 0
#endif
#define RR_VALIDATE
int RRGeneration;
int RRNScreens;
static int ProcRRQueryVersion (ClientPtr pClient);
static int ProcRRDispatch (ClientPtr pClient);
static int SProcRRDispatch (ClientPtr pClient);
static int SProcRRQueryVersion (ClientPtr pClient);
#define wrap(priv,real,mem,func) {\
priv->mem = real->mem; \
real->mem = func; \
}
#define unwrap(priv,real,mem) {\
real->mem = priv->mem; \
}
#if 0
static CARD8 RRReqCode;
static int RRErrBase;
#endif
static int RREventBase;
static RESTYPE ClientType, EventType; /* resource types for event masks */
static int RRClientPrivateIndex;
typedef struct _RRTimes {
TimeStamp setTime;
TimeStamp configTime;
} RRTimesRec, *RRTimesPtr;
typedef struct _RRClient {
int major_version;
int minor_version;
/* RRTimesRec times[0]; */
} RRClientRec, *RRClientPtr;
/*
* each window has a list of clients requesting
* RRNotify events. Each client has a resource
* for each window it selects RRNotify input for,
* this resource is used to delete the RRNotifyRec
* entry from the per-window queue.
*/
typedef struct _RREvent *RREventPtr;
typedef struct _RREvent {
RREventPtr next;
ClientPtr client;
WindowPtr window;
XID clientResource;
int mask;
} RREventRec;
int rrPrivIndex = -1;
#define GetRRClient(pClient) ((RRClientPtr) (pClient)->devPrivates[RRClientPrivateIndex].ptr)
#define rrClientPriv(pClient) RRClientPtr pRRClient = GetRRClient(pClient)
static Bool
RRClientKnowsRates (ClientPtr pClient)
{
rrClientPriv(pClient);
return (pRRClient->major_version > 1 ||
(pRRClient->major_version == 1 && pRRClient->minor_version >= 1));
}
static void
RRClientCallback (CallbackListPtr *list,
pointer closure,
pointer data)
{
NewClientInfoRec *clientinfo = (NewClientInfoRec *) data;
ClientPtr pClient = clientinfo->client;
rrClientPriv(pClient);
RRTimesPtr pTimes = (RRTimesPtr) (pRRClient + 1);
int i;
pRRClient->major_version = 0;
pRRClient->minor_version = 0;
for (i = 0; i < screenInfo.numScreens; i++)
{
ScreenPtr pScreen = screenInfo.screens[i];
rrScrPriv(pScreen);
if (pScrPriv)
{
pTimes[i].setTime = pScrPriv->lastSetTime;
pTimes[i].configTime = pScrPriv->lastConfigTime;
}
}
}
static void
RRResetProc (ExtensionEntry *extEntry)
{
}
static Bool
RRCloseScreen (int i, ScreenPtr pScreen)
{
rrScrPriv(pScreen);
unwrap (pScrPriv, pScreen, CloseScreen);
if (pScrPriv->pSizes)
xfree (pScrPriv->pSizes);
xfree (pScrPriv);
RRNScreens -= 1; /* ok, one fewer screen with RandR running */
return (*pScreen->CloseScreen) (i, pScreen);
}
static void
SRRScreenChangeNotifyEvent(xRRScreenChangeNotifyEvent *from,
xRRScreenChangeNotifyEvent *to)
{
to->type = from->type;
to->rotation = from->rotation;
cpswaps(from->sequenceNumber, to->sequenceNumber);
cpswapl(from->timestamp, to->timestamp);
cpswapl(from->configTimestamp, to->configTimestamp);
cpswapl(from->root, to->root);
cpswapl(from->window, to->window);
cpswaps(from->sizeID, to->sizeID);
cpswaps(from->widthInPixels, to->widthInPixels);
cpswaps(from->heightInPixels, to->heightInPixels);
cpswaps(from->widthInMillimeters, to->widthInMillimeters);
cpswaps(from->heightInMillimeters, to->heightInMillimeters);
cpswaps(from->subpixelOrder, to->subpixelOrder);
}
Bool RRScreenInit(ScreenPtr pScreen)
{
rrScrPrivPtr pScrPriv;
if (RRGeneration != serverGeneration)
{
if ((rrPrivIndex = AllocateScreenPrivateIndex()) < 0)
return FALSE;
RRGeneration = serverGeneration;
}
pScrPriv = (rrScrPrivPtr) xalloc (sizeof (rrScrPrivRec));
if (!pScrPriv)
return FALSE;
SetRRScreen(pScreen, pScrPriv);
/*
* Calling function best set these function vectors
*/
pScrPriv->rrSetConfig = 0;
pScrPriv->rrGetInfo = 0;
/*
* This value doesn't really matter -- any client must call
* GetScreenInfo before reading it which will automatically update
* the time
*/
pScrPriv->lastSetTime = currentTime;
pScrPriv->lastConfigTime = currentTime;
wrap (pScrPriv, pScreen, CloseScreen, RRCloseScreen);
pScrPriv->rotations = RR_Rotate_0;
pScrPriv->nSizes = 0;
pScrPriv->nSizesInUse = 0;
pScrPriv->pSizes = 0;
pScrPriv->rotation = RR_Rotate_0;
pScrPriv->size = -1;
RRNScreens += 1; /* keep count of screens that implement randr */
return TRUE;
}
/*ARGSUSED*/
static int
RRFreeClient (pointer data, XID id)
{
RREventPtr pRREvent;
WindowPtr pWin;
RREventPtr *pHead, pCur, pPrev;
pRREvent = (RREventPtr) data;
pWin = pRREvent->window;
pHead = (RREventPtr *) LookupIDByType(pWin->drawable.id, EventType);
if (pHead) {
pPrev = 0;
for (pCur = *pHead; pCur && pCur != pRREvent; pCur=pCur->next)
pPrev = pCur;
if (pCur)
{
if (pPrev)
pPrev->next = pRREvent->next;
else
*pHead = pRREvent->next;
}
}
xfree ((pointer) pRREvent);
return 1;
}
/*ARGSUSED*/
static int
RRFreeEvents (pointer data, XID id)
{
RREventPtr *pHead, pCur, pNext;
pHead = (RREventPtr *) data;
for (pCur = *pHead; pCur; pCur = pNext) {
pNext = pCur->next;
FreeResource (pCur->clientResource, ClientType);
xfree ((pointer) pCur);
}
xfree ((pointer) pHead);
return 1;
}
void
RRExtensionInit (void)
{
ExtensionEntry *extEntry;
if (RRNScreens == 0) return;
RRClientPrivateIndex = AllocateClientPrivateIndex ();
if (!AllocateClientPrivate (RRClientPrivateIndex,
sizeof (RRClientRec) +
screenInfo.numScreens * sizeof (RRTimesRec)))
return;
if (!AddCallback (&ClientStateCallback, RRClientCallback, 0))
return;
ClientType = CreateNewResourceType(RRFreeClient);
if (!ClientType)
return;
EventType = CreateNewResourceType(RRFreeEvents);
if (!EventType)
return;
extEntry = AddExtension (RANDR_NAME, RRNumberEvents, RRNumberErrors,
ProcRRDispatch, SProcRRDispatch,
RRResetProc, StandardMinorOpcode);
if (!extEntry)
return;
#if 0
RRReqCode = (CARD8) extEntry->base;
RRErrBase = extEntry->errorBase;
#endif
RREventBase = extEntry->eventBase;
EventSwapVector[RREventBase + RRScreenChangeNotify] = (EventSwapPtr)
SRRScreenChangeNotifyEvent;
return;
}
static int
TellChanged (WindowPtr pWin, pointer value)
{
RREventPtr *pHead, pRREvent;
ClientPtr client;
xRRScreenChangeNotifyEvent se;
ScreenPtr pScreen = pWin->drawable.pScreen;
rrScrPriv(pScreen);
RRScreenSizePtr pSize;
WindowPtr pRoot = WindowTable[pScreen->myNum];
pHead = (RREventPtr *) LookupIDByType (pWin->drawable.id, EventType);
if (!pHead)
return WT_WALKCHILDREN;
se.type = RRScreenChangeNotify + RREventBase;
se.rotation = (CARD8) pScrPriv->rotation;
se.timestamp = pScrPriv->lastSetTime.milliseconds;
se.configTimestamp = pScrPriv->lastConfigTime.milliseconds;
se.root = pRoot->drawable.id;
se.window = pWin->drawable.id;
#ifdef RENDER
se.subpixelOrder = PictureGetSubpixelOrder (pScreen);
#else
se.subpixelOrder = SubPixelUnknown;
#endif
if (pScrPriv->size >= 0)
{
pSize = &pScrPriv->pSizes[pScrPriv->size];
se.sizeID = pSize->id;
se.widthInPixels = pSize->width;
se.heightInPixels = pSize->height;
se.widthInMillimeters = pSize->mmWidth;
se.heightInMillimeters = pSize->mmHeight;
}
else
{
/*
* This "shouldn't happen", but a broken DDX can
* forget to set the current configuration on GetInfo
*/
se.sizeID = 0xffff;
se.widthInPixels = 0;
se.heightInPixels = 0;
se.widthInMillimeters = 0;
se.heightInMillimeters = 0;
}
for (pRREvent = *pHead; pRREvent; pRREvent = pRREvent->next)
{
client = pRREvent->client;
if (client == serverClient || client->clientGone)
continue;
se.sequenceNumber = client->sequence;
if(pRREvent->mask & RRScreenChangeNotifyMask)
WriteEventsToClient (client, 1, (xEvent *) &se);
}
return WT_WALKCHILDREN;
}
static Bool
RRGetInfo (ScreenPtr pScreen)
{
rrScrPriv (pScreen);
int i, j, k, l;
Bool changed;
Rotation rotations;
RRScreenSizePtr pSize;
RRScreenRatePtr pRate;
for (i = 0; i < pScrPriv->nSizes; i++)
{
pSize = &pScrPriv->pSizes[i];
pSize->oldReferenced = pSize->referenced;
pSize->referenced = FALSE;
for (k = 0; k < pSize->nRates; k++)
{
pRate = &pSize->pRates[k];
pRate->oldReferenced = pRate->referenced;
pRate->referenced = FALSE;
}
}
if (!(*pScrPriv->rrGetInfo) (pScreen, &rotations))
return FALSE;
changed = FALSE;
/*
* Check whether anything changed and simultaneously generate
* the protocol id values for the objects
*/
if (rotations != pScrPriv->rotations)
{
pScrPriv->rotations = rotations;
changed = TRUE;
}
j = 0;
for (i = 0; i < pScrPriv->nSizes; i++)
{
pSize = &pScrPriv->pSizes[i];
if (pSize->oldReferenced != pSize->referenced)
changed = TRUE;
if (pSize->referenced)
pSize->id = j++;
l = 0;
for (k = 0; k < pSize->nRates; k++)
{
pRate = &pSize->pRates[k];
if (pRate->oldReferenced != pRate->referenced)
changed = TRUE;
if (pRate->referenced)
l++;
}
pSize->nRatesInUse = l;
}
pScrPriv->nSizesInUse = j;
if (changed)
{
UpdateCurrentTime ();
pScrPriv->lastConfigTime = currentTime;
WalkTree (pScreen, TellChanged, (pointer) pScreen);
}
return TRUE;
}
static void
RRSendConfigNotify (ScreenPtr pScreen)
{
WindowPtr pWin = WindowTable[pScreen->myNum];
xEvent event;
event.u.u.type = ConfigureNotify;
event.u.configureNotify.window = pWin->drawable.id;
event.u.configureNotify.aboveSibling = None;
event.u.configureNotify.x = 0;
event.u.configureNotify.y = 0;
/* XXX xinerama stuff ? */
event.u.configureNotify.width = pWin->drawable.width;
event.u.configureNotify.height = pWin->drawable.height;
event.u.configureNotify.borderWidth = wBorderWidth (pWin);
event.u.configureNotify.override = pWin->overrideRedirect;
DeliverEvents(pWin, &event, 1, NullWindow);
}
static int
ProcRRQueryVersion (ClientPtr client)
{
xRRQueryVersionReply rep;
register int n;
REQUEST(xRRQueryVersionReq);
rrClientPriv(client);
REQUEST_SIZE_MATCH(xRRQueryVersionReq);
pRRClient->major_version = stuff->majorVersion;
pRRClient->minor_version = stuff->minorVersion;
rep.type = X_Reply;
rep.length = 0;
rep.sequenceNumber = client->sequence;
rep.majorVersion = RANDR_MAJOR;
rep.minorVersion = RANDR_MINOR;
if (client->swapped) {
swaps(&rep.sequenceNumber, n);
swapl(&rep.length, n);
swapl(&rep.majorVersion, n);
swapl(&rep.minorVersion, n);
}
WriteToClient(client, sizeof(xRRQueryVersionReply), (char *)&rep);
return (client->noClientException);
}
extern char *ConnectionInfo;
static int padlength[4] = {0, 3, 2, 1};
static void
RREditConnectionInfo (ScreenPtr pScreen)
{
xConnSetup *connSetup;
char *vendor;
xPixmapFormat *formats;
xWindowRoot *root;
xDepth *depth;
xVisualType *visual;
int screen = 0;
int d;
connSetup = (xConnSetup *) ConnectionInfo;
vendor = (char *) connSetup + sizeof (xConnSetup);
formats = (xPixmapFormat *) ((char *) vendor +
connSetup->nbytesVendor +
padlength[connSetup->nbytesVendor & 3]);
root = (xWindowRoot *) ((char *) formats +
sizeof (xPixmapFormat) * screenInfo.numPixmapFormats);
while (screen != pScreen->myNum)
{
depth = (xDepth *) ((char *) root +
sizeof (xWindowRoot));
for (d = 0; d < root->nDepths; d++)
{
visual = (xVisualType *) ((char *) depth +
sizeof (xDepth));
depth = (xDepth *) ((char *) visual +
depth->nVisuals * sizeof (xVisualType));
}
root = (xWindowRoot *) ((char *) depth);
screen++;
}
root->pixWidth = pScreen->width;
root->pixHeight = pScreen->height;
root->mmWidth = pScreen->mmWidth;
root->mmHeight = pScreen->mmHeight;
}
static int
ProcRRGetScreenInfo (ClientPtr client)
{
REQUEST(xRRGetScreenInfoReq);
xRRGetScreenInfoReply rep;
WindowPtr pWin;
int n;
ScreenPtr pScreen;
rrScrPrivPtr pScrPriv;
CARD8 *extra;
unsigned long extraLen;
REQUEST_SIZE_MATCH(xRRGetScreenInfoReq);
pWin = (WindowPtr)SecurityLookupWindow(stuff->window, client,
SecurityReadAccess);
if (!pWin)
return BadWindow;
pScreen = pWin->drawable.pScreen;
pScrPriv = rrGetScrPriv(pScreen);
rep.pad = 0;
if (!pScrPriv)
{
rep.type = X_Reply;
rep.setOfRotations = RR_Rotate_0;;
rep.sequenceNumber = client->sequence;
rep.length = 0;
rep.root = WindowTable[pWin->drawable.pScreen->myNum]->drawable.id;
rep.timestamp = currentTime.milliseconds;
rep.configTimestamp = currentTime.milliseconds;
rep.nSizes = 0;
rep.sizeID = 0;
rep.rotation = RR_Rotate_0;
rep.rate = 0;
rep.nrateEnts = 0;
extra = 0;
extraLen = 0;
}
else
{
int i, j;
xScreenSizes *size;
CARD16 *rates;
CARD8 *data8;
Bool has_rate = RRClientKnowsRates (client);
RRGetInfo (pScreen);
rep.type = X_Reply;
rep.setOfRotations = pScrPriv->rotations;
rep.sequenceNumber = client->sequence;
rep.length = 0;
rep.root = WindowTable[pWin->drawable.pScreen->myNum]->drawable.id;
rep.timestamp = pScrPriv->lastSetTime.milliseconds;
rep.configTimestamp = pScrPriv->lastConfigTime.milliseconds;
rep.rotation = pScrPriv->rotation;
rep.nSizes = pScrPriv->nSizesInUse;
rep.rate = pScrPriv->rate;
rep.nrateEnts = 0;
if (has_rate)
{
for (i = 0; i < pScrPriv->nSizes; i++)
{
RRScreenSizePtr pSize = &pScrPriv->pSizes[i];
if (pSize->referenced)
{
rep.nrateEnts += (1 + pSize->nRatesInUse);
}
}
}
if (pScrPriv->size >= 0)
rep.sizeID = pScrPriv->pSizes[pScrPriv->size].id;
else
return BadImplementation;
extraLen = (rep.nSizes * sizeof (xScreenSizes) +
rep.nrateEnts * sizeof (CARD16));
extra = (CARD8 *) xalloc (extraLen);
if (!extra)
return BadAlloc;
/*
* First comes the size information
*/
size = (xScreenSizes *) extra;
rates = (CARD16 *) (size + rep.nSizes);
for (i = 0; i < pScrPriv->nSizes; i++)
{
RRScreenSizePtr pSize = &pScrPriv->pSizes[i];
if (pSize->referenced)
{
size->widthInPixels = pSize->width;
size->heightInPixels = pSize->height;
size->widthInMillimeters = pSize->mmWidth;
size->heightInMillimeters = pSize->mmHeight;
if (client->swapped)
{
swaps (&size->widthInPixels, n);
swaps (&size->heightInPixels, n);
swaps (&size->widthInMillimeters, n);
swaps (&size->heightInMillimeters, n);
}
size++;
if (has_rate)
{
*rates = pSize->nRatesInUse;
if (client->swapped)
{
swaps (rates, n);
}
rates++;
for (j = 0; j < pSize->nRates; j++)
{
RRScreenRatePtr pRate = &pSize->pRates[j];
if (pRate->referenced)
{
*rates = pRate->rate;
if (client->swapped)
{
swaps (rates, n);
}
rates++;
}
}
}
}
}
data8 = (CARD8 *) rates;
if (data8 - (CARD8 *) extra != extraLen)
FatalError ("RRGetScreenInfo bad extra len %ld != %ld\n",
(unsigned long)(data8 - (CARD8 *) extra), extraLen);
rep.length = (extraLen + 3) >> 2;
}
if (client->swapped) {
swaps(&rep.sequenceNumber, n);
swapl(&rep.length, n);
swapl(&rep.timestamp, n);
swaps(&rep.rotation, n);
swaps(&rep.nSizes, n);
swaps(&rep.sizeID, n);
swaps(&rep.rate, n);
swaps(&rep.nrateEnts, n);
}
WriteToClient(client, sizeof(xRRGetScreenInfoReply), (char *)&rep);
if (extraLen)
{
WriteToClient (client, extraLen, (char *) extra);
xfree (extra);
}
return (client->noClientException);
}
static int
ProcRRSetScreenConfig (ClientPtr client)
{
REQUEST(xRRSetScreenConfigReq);
xRRSetScreenConfigReply rep;
DrawablePtr pDraw;
int n;
ScreenPtr pScreen;
rrScrPrivPtr pScrPriv;
TimeStamp configTime;
TimeStamp time;
RRScreenSizePtr pSize;
int i;
Rotation rotation;
int rate;
short oldWidth, oldHeight;
Bool has_rate;
UpdateCurrentTime ();
if (RRClientKnowsRates (client))
{
REQUEST_SIZE_MATCH (xRRSetScreenConfigReq);
has_rate = TRUE;
}
else
{
REQUEST_SIZE_MATCH (xRR1_0SetScreenConfigReq);
has_rate = FALSE;
}
SECURITY_VERIFY_DRAWABLE(pDraw, stuff->drawable, client,
SecurityWriteAccess);
pScreen = pDraw->pScreen;
pScrPriv = rrGetScrPriv(pScreen);
time = ClientTimeToServerTime(stuff->timestamp);
configTime = ClientTimeToServerTime(stuff->configTimestamp);
oldWidth = pScreen->width;
oldHeight = pScreen->height;
if (!pScrPriv)
{
time = currentTime;
rep.status = RRSetConfigFailed;
goto sendReply;
}
if (!RRGetInfo (pScreen))
return BadAlloc;
/*
* if the client's config timestamp is not the same as the last config
* timestamp, then the config information isn't up-to-date and
* can't even be validated
*/
if (CompareTimeStamps (configTime, pScrPriv->lastConfigTime) != 0)
{
rep.status = RRSetConfigInvalidConfigTime;
goto sendReply;
}
/*
* Search for the requested size
*/
pSize = 0;
for (i = 0; i < pScrPriv->nSizes; i++)
{
pSize = &pScrPriv->pSizes[i];
if (pSize->referenced && pSize->id == stuff->sizeID)
{
break;
}
}
if (i == pScrPriv->nSizes)
{
/*
* Invalid size ID
*/
client->errorValue = stuff->sizeID;
return BadValue;
}
/*
* Validate requested rotation
*/
rotation = (Rotation) stuff->rotation;
/* test the rotation bits only! */
switch (rotation & 0xf) {
case RR_Rotate_0:
case RR_Rotate_90:
case RR_Rotate_180:
case RR_Rotate_270:
break;
default:
/*
* Invalid rotation
*/
client->errorValue = stuff->rotation;
return BadValue;
}
if ((~pScrPriv->rotations) & rotation)
{
/*
* requested rotation or reflection not supported by screen
*/
client->errorValue = stuff->rotation;
return BadMatch;
}
/*
* Validate requested refresh
*/
if (has_rate)
rate = (int) stuff->rate;
else
rate = 0;
if (rate)
{
for (i = 0; i < pSize->nRates; i++)
{
RRScreenRatePtr pRate = &pSize->pRates[i];
if (pRate->referenced && pRate->rate == rate)
break;
}
if (i == pSize->nRates)
{
/*
* Invalid rate
*/
client->errorValue = rate;
return BadValue;
}
}
/*
* Make sure the requested set-time is not older than
* the last set-time
*/
if (CompareTimeStamps (time, pScrPriv->lastSetTime) < 0)
{
rep.status = RRSetConfigInvalidTime;
goto sendReply;
}
/*
* call out to ddx routine to effect the change
*/
if (!(*pScrPriv->rrSetConfig) (pScreen, rotation, rate,
pSize))
{
/*
* unknown DDX failure, report to client
*/
rep.status = RRSetConfigFailed;
goto sendReply;
}
/*
* set current extension configuration pointers
*/
RRSetCurrentConfig (pScreen, rotation, rate, pSize);
/*
* Deliver ScreenChangeNotify events whenever
* the configuration is updated
*/
WalkTree (pScreen, TellChanged, (pointer) pScreen);
/*
* Deliver ConfigureNotify events when root changes
* pixel size
*/
if (oldWidth != pScreen->width || oldHeight != pScreen->height)
RRSendConfigNotify (pScreen);
RREditConnectionInfo (pScreen);
/*
* Fix pointer bounds and location
*/
ScreenRestructured (pScreen);
pScrPriv->lastSetTime = time;
/*
* Report Success
*/
rep.status = RRSetConfigSuccess;
sendReply:
rep.type = X_Reply;
/* rep.status has already been filled in */
rep.length = 0;
rep.sequenceNumber = client->sequence;
rep.newTimestamp = pScrPriv->lastSetTime.milliseconds;
rep.newConfigTimestamp = pScrPriv->lastConfigTime.milliseconds;
rep.root = WindowTable[pDraw->pScreen->myNum]->drawable.id;
if (client->swapped)
{
swaps(&rep.sequenceNumber, n);
swapl(&rep.length, n);
swapl(&rep.newTimestamp, n);
swapl(&rep.newConfigTimestamp, n);
swapl(&rep.root, n);
}
WriteToClient(client, sizeof(xRRSetScreenConfigReply), (char *)&rep);
return (client->noClientException);
}
int
RRSetScreenConfig (ScreenPtr pScreen,
Rotation rotation,
int rate,
RRScreenSizePtr pSize)
{
rrScrPrivPtr pScrPriv;
int i;
short oldWidth, oldHeight;
pScrPriv = rrGetScrPriv(pScreen);
oldWidth = pScreen->width;
oldHeight = pScreen->height;
if (!RRGetInfo (pScreen))
return BadAlloc;
/*
* Validate requested rotation
*/
/* test the rotation bits only! */
switch (rotation & 0xf) {
case RR_Rotate_0:
case RR_Rotate_90:
case RR_Rotate_180:
case RR_Rotate_270:
break;
default:
/*
* Invalid rotation
*/
return BadValue;
}
if ((~pScrPriv->rotations) & rotation)
{
/*
* requested rotation or reflection not supported by screen
*/
return BadMatch;
}
/*
* Validate requested refresh
*/
if (rate)
{
for (i = 0; i < pSize->nRates; i++)
{
RRScreenRatePtr pRate = &pSize->pRates[i];
if (pRate->referenced && pRate->rate == rate)
break;
}
if (i == pSize->nRates)
{
/*
* Invalid rate
*/
return BadValue;
}
}
/*
* call out to ddx routine to effect the change
*/
if (!(*pScrPriv->rrSetConfig) (pScreen, rotation, rate,
pSize))
{
/*
* unknown DDX failure, report to client
*/
return BadImplementation;
}
/*
* set current extension configuration pointers
*/
RRSetCurrentConfig (pScreen, rotation, rate, pSize);
/*
* Deliver ScreenChangeNotify events whenever
* the configuration is updated
*/
WalkTree (pScreen, TellChanged, (pointer) pScreen);
/*
* Deliver ConfigureNotify events when root changes
* pixel size
*/
if (oldWidth != pScreen->width || oldHeight != pScreen->height)
RRSendConfigNotify (pScreen);
RREditConnectionInfo (pScreen);
/*
* Fix pointer bounds and location
*/
ScreenRestructured (pScreen);
return Success;
}
static int
ProcRRSelectInput (ClientPtr client)
{
REQUEST(xRRSelectInputReq);
rrClientPriv(client);
RRTimesPtr pTimes;
WindowPtr pWin;
RREventPtr pRREvent, pNewRREvent, *pHead;
XID clientResource;
REQUEST_SIZE_MATCH(xRRSelectInputReq);
pWin = SecurityLookupWindow (stuff->window, client, SecurityWriteAccess);
if (!pWin)
return BadWindow;
pHead = (RREventPtr *)SecurityLookupIDByType(client,
pWin->drawable.id, EventType,
SecurityWriteAccess);
if (stuff->enable & (RRScreenChangeNotifyMask))
{
ScreenPtr pScreen = pWin->drawable.pScreen;
rrScrPriv (pScreen);
if (pHead)
{
/* check for existing entry. */
for (pRREvent = *pHead; pRREvent; pRREvent = pRREvent->next)
if (pRREvent->client == client)
return Success;
}
/* build the entry */
pNewRREvent = (RREventPtr) xalloc (sizeof (RREventRec));
if (!pNewRREvent)
return BadAlloc;
pNewRREvent->next = 0;
pNewRREvent->client = client;
pNewRREvent->window = pWin;
pNewRREvent->mask = stuff->enable;
/*
* add a resource that will be deleted when
* the client goes away
*/
clientResource = FakeClientID (client->index);
pNewRREvent->clientResource = clientResource;
if (!AddResource (clientResource, ClientType, (pointer)pNewRREvent))
return BadAlloc;
/*
* create a resource to contain a pointer to the list
* of clients selecting input. This must be indirect as
* the list may be arbitrarily rearranged which cannot be
* done through the resource database.
*/
if (!pHead)
{
pHead = (RREventPtr *) xalloc (sizeof (RREventPtr));
if (!pHead ||
!AddResource (pWin->drawable.id, EventType, (pointer)pHead))
{
FreeResource (clientResource, RT_NONE);
return BadAlloc;
}
*pHead = 0;
}
pNewRREvent->next = *pHead;
*pHead = pNewRREvent;
/*
* Now see if the client needs an event
*/
if (pScrPriv)
{
pTimes = &((RRTimesPtr) (pRRClient + 1))[pScreen->myNum];
if (CompareTimeStamps (pTimes->setTime,
pScrPriv->lastSetTime) != 0 ||
CompareTimeStamps (pTimes->configTime,
pScrPriv->lastConfigTime) != 0)
{
TellChanged (pWin, (pointer) pScreen);
}
}
}
else if (stuff->enable == xFalse)
{
/* delete the interest */
if (pHead) {
pNewRREvent = 0;
for (pRREvent = *pHead; pRREvent; pRREvent = pRREvent->next) {
if (pRREvent->client == client)
break;
pNewRREvent = pRREvent;
}
if (pRREvent) {
FreeResource (pRREvent->clientResource, ClientType);
if (pNewRREvent)
pNewRREvent->next = pRREvent->next;
else
*pHead = pRREvent->next;
xfree (pRREvent);
}
}
}
else
{
client->errorValue = stuff->enable;
return BadValue;
}
return Success;
}
static int
ProcRRDispatch (ClientPtr client)
{
REQUEST(xReq);
switch (stuff->data)
{
case X_RRQueryVersion:
return ProcRRQueryVersion(client);
case X_RRSetScreenConfig:
return ProcRRSetScreenConfig(client);
case X_RRSelectInput:
return ProcRRSelectInput(client);
case X_RRGetScreenInfo:
return ProcRRGetScreenInfo(client);
default:
return BadRequest;
}
}
static int
SProcRRQueryVersion (ClientPtr client)
{
register int n;
REQUEST(xRRQueryVersionReq);
swaps(&stuff->length, n);
swapl(&stuff->majorVersion, n);
swapl(&stuff->minorVersion, n);
return ProcRRQueryVersion(client);
}
static int
SProcRRGetScreenInfo (ClientPtr client)
{
register int n;
REQUEST(xRRGetScreenInfoReq);
swaps(&stuff->length, n);
swapl(&stuff->window, n);
return ProcRRGetScreenInfo(client);
}
static int
SProcRRSetScreenConfig (ClientPtr client)
{
register int n;
REQUEST(xRRSetScreenConfigReq);
if (RRClientKnowsRates (client))
{
REQUEST_SIZE_MATCH (xRRSetScreenConfigReq);
swaps (&stuff->rate, n);
}
else
{
REQUEST_SIZE_MATCH (xRR1_0SetScreenConfigReq);
}
swaps(&stuff->length, n);
swapl(&stuff->drawable, n);
swapl(&stuff->timestamp, n);
swaps(&stuff->sizeID, n);
swaps(&stuff->rotation, n);
return ProcRRSetScreenConfig(client);
}
static int
SProcRRSelectInput (ClientPtr client)
{
register int n;
REQUEST(xRRSelectInputReq);
swaps(&stuff->length, n);
swapl(&stuff->window, n);
return ProcRRSelectInput(client);
}
static int
SProcRRDispatch (ClientPtr client)
{
REQUEST(xReq);
switch (stuff->data)
{
case X_RRQueryVersion:
return SProcRRQueryVersion(client);
case X_RRSetScreenConfig:
return SProcRRSetScreenConfig(client);
case X_RRSelectInput:
return SProcRRSelectInput(client);
case X_RRGetScreenInfo:
return SProcRRGetScreenInfo(client);
default:
return BadRequest;
}
}
static Bool
RRScreenSizeMatches (RRScreenSizePtr a,
RRScreenSizePtr b)
{
if (a->width != b->width)
return FALSE;
if (a->height != b->height)
return FALSE;
if (a->mmWidth != b->mmWidth)
return FALSE;
if (a->mmHeight != b->mmHeight)
return FALSE;
return TRUE;
}
RRScreenSizePtr
RRRegisterSize (ScreenPtr pScreen,
short width,
short height,
short mmWidth,
short mmHeight)
{
rrScrPriv (pScreen);
int i;
RRScreenSize tmp;
RRScreenSizePtr pNew;
if (!pScrPriv)
return 0;
tmp.width = width;
tmp.height= height;
tmp.mmWidth = mmWidth;
tmp.mmHeight = mmHeight;
tmp.pRates = 0;
tmp.nRates = 0;
tmp.nRatesInUse = 0;
tmp.referenced = TRUE;
tmp.oldReferenced = FALSE;
for (i = 0; i < pScrPriv->nSizes; i++)
if (RRScreenSizeMatches (&tmp, &pScrPriv->pSizes[i]))
{
pScrPriv->pSizes[i].referenced = TRUE;
return &pScrPriv->pSizes[i];
}
pNew = xrealloc (pScrPriv->pSizes,
(pScrPriv->nSizes + 1) * sizeof (RRScreenSize));
if (!pNew)
return 0;
pNew[pScrPriv->nSizes++] = tmp;
pScrPriv->pSizes = pNew;
return &pNew[pScrPriv->nSizes-1];
}
Bool RRRegisterRate (ScreenPtr pScreen,
RRScreenSizePtr pSize,
int rate)
{
rrScrPriv(pScreen);
int i;
RRScreenRatePtr pNew, pRate;
if (!pScrPriv)
return FALSE;
for (i = 0; i < pSize->nRates; i++)
{
pRate = &pSize->pRates[i];
if (pRate->rate == rate)
{
pRate->referenced = TRUE;
return TRUE;
}
}
pNew = xrealloc (pSize->pRates,
(pSize->nRates + 1) * sizeof (RRScreenRate));
if (!pNew)
return FALSE;
pRate = &pNew[pSize->nRates++];
pRate->rate = rate;
pRate->referenced = TRUE;
pRate->oldReferenced = FALSE;
pSize->pRates = pNew;
return TRUE;
}
Rotation
RRGetRotation(ScreenPtr pScreen)
{
rrScrPriv (pScreen);
if (!pScrPriv)
return RR_Rotate_0;
return pScrPriv->rotation;
}
void
RRSetCurrentConfig (ScreenPtr pScreen,
Rotation rotation,
int rate,
RRScreenSizePtr pSize)
{
rrScrPriv (pScreen);
if (!pScrPriv)
return;
pScrPriv->rotation = rotation;
pScrPriv->size = pSize - pScrPriv->pSizes;
pScrPriv->rate = rate;
}
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