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/*
* Copyright © 2006 Keith Packard
*
* 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 the copyright holders not be used in advertising or
* publicity pertaining to distribution of the software without specific,
* written prior permission. The copyright holders make no representations
* about the suitability of this software for any purpose. It is provided "as
* is" without express or implied warranty.
*
* THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
* EVENT SHALL THE COPYRIGHT HOLDERS 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.
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <stdio.h>
#include <X11/Xlib.h>
/* we need to be able to manipulate the Display structure on events */
#include <X11/Xlibint.h>
#include <X11/extensions/render.h>
#include <X11/extensions/Xrender.h>
#include "Xrandrint.h"
/*
* this is cheating on the knowledge that the two requests are identical
* but for the request number.
*/
static XRRScreenResources *
doGetScreenResources (Display *dpy, Window window, int poll)
{
XExtDisplayInfo *info = XRRFindDisplay(dpy);
xRRGetScreenResourcesReply rep;
xRRGetScreenResourcesReq *req;
_XAsyncHandler async;
_XRRVersionState async_state;
int nbytes, nbytesRead, rbytes;
int i;
xRRQueryVersionReq *vreq;
XRRScreenResources *xrsr;
char *names;
char *wire_names, *wire_name;
Bool getting_version = False;
XRandRInfo *xrri;
RRCheckExtension (dpy, info, NULL);
LockDisplay (dpy);
xrri = (XRandRInfo *) info->data;
if (xrri->major_version == -1)
{
/* hide a version query in the request */
GetReq (RRQueryVersion, vreq);
vreq->reqType = info->codes->major_opcode;
vreq->randrReqType = X_RRQueryVersion;
vreq->majorVersion = RANDR_MAJOR;
vreq->minorVersion = RANDR_MINOR;
async_state.version_seq = dpy->request;
async_state.error = False;
async.next = dpy->async_handlers;
async.handler = _XRRVersionHandler;
async.data = (XPointer) &async_state;
dpy->async_handlers = &async;
getting_version = True;
}
GetReq (RRGetScreenResources, req);
req->reqType = info->codes->major_opcode;
req->randrReqType = poll ? X_RRGetScreenResources
: X_RRGetScreenResourcesCurrent;
req->window = window;
if (!_XReply (dpy, (xReply *) &rep, 0, xFalse))
{
if (getting_version)
DeqAsyncHandler (dpy, &async);
UnlockDisplay (dpy);
SyncHandle ();
return NULL;
}
if (getting_version)
{
DeqAsyncHandler (dpy, &async);
if (async_state.error)
{
UnlockDisplay (dpy);
SyncHandle();
LockDisplay (dpy);
}
xrri->major_version = async_state.major_version;
xrri->minor_version = async_state.minor_version;
xrri->has_rates = _XRRHasRates (xrri->minor_version, xrri->major_version);
}
nbytes = (long) rep.length << 2;
nbytesRead = (long) (rep.nCrtcs * 4 +
rep.nOutputs * 4 +
rep.nModes * SIZEOF (xRRModeInfo) +
((rep.nbytesNames + 3) & ~3));
/*
* first we must compute how much space to allocate for
* randr library's use; we'll allocate the structures in a single
* allocation, on cleanlyness grounds.
*/
rbytes = (sizeof (XRRScreenResources) +
rep.nCrtcs * sizeof (RRCrtc) +
rep.nOutputs * sizeof (RROutput) +
rep.nModes * sizeof (XRRModeInfo) +
rep.nbytesNames + rep.nModes); /* '\0' terminate names */
xrsr = (XRRScreenResources *) Xmalloc(rbytes);
wire_names = (char *) Xmalloc (rep.nbytesNames);
if (xrsr == NULL || wire_names == NULL) {
if (xrsr) Xfree (xrsr);
if (wire_names) Xfree (wire_names);
_XEatDataWords (dpy, rep.length);
UnlockDisplay (dpy);
SyncHandle ();
return NULL;
}
xrsr->timestamp = rep.timestamp;
xrsr->configTimestamp = rep.configTimestamp;
xrsr->ncrtc = rep.nCrtcs;
xrsr->crtcs = (RRCrtc *) (xrsr + 1);
xrsr->noutput = rep.nOutputs;
xrsr->outputs = (RROutput *) (xrsr->crtcs + rep.nCrtcs);
xrsr->nmode = rep.nModes;
xrsr->modes = (XRRModeInfo *) (xrsr->outputs + rep.nOutputs);
names = (char *) (xrsr->modes + rep.nModes);
_XRead32 (dpy, xrsr->crtcs, rep.nCrtcs << 2);
_XRead32 (dpy, xrsr->outputs, rep.nOutputs << 2);
for (i = 0; i < rep.nModes; i++) {
xRRModeInfo modeInfo;
_XReadPad (dpy, (char *) &modeInfo, SIZEOF (xRRModeInfo));
xrsr->modes[i].id = modeInfo.id;
xrsr->modes[i].width = modeInfo.width;
xrsr->modes[i].height = modeInfo.height;
xrsr->modes[i].dotClock = modeInfo.dotClock;
xrsr->modes[i].hSyncStart = modeInfo.hSyncStart;
xrsr->modes[i].hSyncEnd = modeInfo.hSyncEnd;
xrsr->modes[i].hTotal = modeInfo.hTotal;
xrsr->modes[i].hSkew = modeInfo.hSkew;
xrsr->modes[i].vSyncStart = modeInfo.vSyncStart;
xrsr->modes[i].vSyncEnd = modeInfo.vSyncEnd;
xrsr->modes[i].vTotal = modeInfo.vTotal;
xrsr->modes[i].nameLength = modeInfo.nameLength;
xrsr->modes[i].modeFlags = modeInfo.modeFlags;
}
/*
* Read names and '\0' pad each one
*/
_XReadPad (dpy, wire_names, rep.nbytesNames);
wire_name = wire_names;
for (i = 0; i < rep.nModes; i++) {
xrsr->modes[i].name = names;
memcpy (names, wire_name, xrsr->modes[i].nameLength);
names[xrsr->modes[i].nameLength] = '\0';
names += xrsr->modes[i].nameLength + 1;
wire_name += xrsr->modes[i].nameLength;
}
Xfree (wire_names);
/*
* Skip any extra data
*/
if (nbytes > nbytesRead)
_XEatData (dpy, (unsigned long) (nbytes - nbytesRead));
UnlockDisplay (dpy);
SyncHandle();
return (XRRScreenResources *) xrsr;
}
XRRScreenResources *
XRRGetScreenResources(Display *dpy, Window window)
{
return doGetScreenResources(dpy, window, 1);
}
XRRScreenResources *
XRRGetScreenResourcesCurrent(Display *dpy, Window window)
{
return doGetScreenResources(dpy, window, 0);
}
void
XRRFreeScreenResources (XRRScreenResources *resources)
{
Xfree (resources);
}
Status
XRRGetScreenSizeRange (Display *dpy, Window window,
int *minWidth, int *minHeight,
int *maxWidth, int *maxHeight)
{
XExtDisplayInfo *info = XRRFindDisplay(dpy);
xRRGetScreenSizeRangeReq *req;
xRRGetScreenSizeRangeReply rep;
RRCheckExtension (dpy, info, 0);
LockDisplay (dpy);
GetReq (RRGetScreenSizeRange, req);
req->reqType = info->codes->major_opcode;
req->randrReqType = X_RRGetScreenSizeRange;
req->window = window;
if (!_XReply (dpy, (xReply *) &rep, 0, xFalse))
{
UnlockDisplay (dpy);
SyncHandle ();
return False;
}
UnlockDisplay (dpy);
SyncHandle ();
*minWidth = rep.minWidth;
*minHeight = rep.minHeight;
*maxWidth = rep.maxWidth;
*maxHeight = rep.maxHeight;
return True;
}
void
XRRSetScreenSize (Display *dpy, Window window,
int width, int height,
int mmWidth, int mmHeight)
{
XExtDisplayInfo *info = XRRFindDisplay(dpy);
xRRSetScreenSizeReq *req;
RRSimpleCheckExtension (dpy, info);
LockDisplay (dpy);
GetReq (RRSetScreenSize, req);
req->reqType = info->codes->major_opcode;
req->randrReqType = X_RRSetScreenSize;
req->window = window;
req->width = width;
req->height = height;
req->widthInMillimeters = mmWidth;
req->heightInMillimeters = mmHeight;
UnlockDisplay (dpy);
SyncHandle ();
}
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