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-rw-r--r--src/XrrProperty.c344
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diff --git a/src/XrrProperty.c b/src/XrrProperty.c
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+++ b/src/XrrProperty.c
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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"
+
+Atom *
+XRRListOutputProperties (Display *dpy, RROutput output, int *nprop)
+{
+ XExtDisplayInfo *info = XRRFindDisplay(dpy);
+ xRRListOutputPropertiesReply rep;
+ xRRListOutputPropertiesReq *req;
+ int nbytes, nbytesRead, netbytes;
+ int i;
+ xRRQueryVersionReq *vreq;
+ Atom *props;
+
+ RRCheckExtension (dpy, info, 0);
+
+ LockDisplay (dpy);
+ GetReq (RRListOutputProperties, req);
+ req->reqType = info->codes->major_opcode;
+ req->randrReqType = X_RRListOutputProperties;
+ req->output = output;
+
+ if (!_XReply (dpy, (xReply *) &rep, 0, xFalse)) {
+ UnlockDisplay (dpy);
+ SyncHandle ();
+ *nprop = 0;
+ return NULL;
+ }
+
+ if (rep.nProperties) {
+ nbytes = rep.nProperties * sizeof (Atom);
+ netbytes = rep.nProperties << 2;
+
+ props = (Atom *) Xmalloc (nbytes);
+ if (props == NULL) {
+ _XEatData (dpy, netbytes);
+ UnlockDisplay (dpy);
+ SyncHandle ();
+ *nprop = 0;
+ return NULL;
+ }
+
+ _XRead32 (dpy, props, nbytes);
+ }
+
+ *nprop = rep.nProperties;
+ UnlockDisplay (dpy);
+ SyncHandle ();
+ return props;
+}
+
+XRRPropertyInfo *
+XRRQueryOutputProperty (Display *dpy, RROutput output, Atom property)
+{
+ XExtDisplayInfo *info = XRRFindDisplay(dpy);
+ xRRQueryOutputPropertyReply rep;
+ xRRQueryOutputPropertyReq *req;
+ int nbytes, nbytesRead, netbytes;
+ int i;
+ xRRQueryVersionReq *vreq;
+ XRRPropertyInfo *prop_info;
+
+ RRCheckExtension (dpy, info, 0);
+
+ LockDisplay (dpy);
+ GetReq (RRQueryOutputProperty, req);
+ req->reqType = info->codes->major_opcode;
+ req->randrReqType = X_RRQueryOutputProperty;
+ req->output = output;
+
+ if (!_XReply (dpy, (xReply *) &rep, 0, xFalse)) {
+ UnlockDisplay (dpy);
+ SyncHandle ();
+ return NULL;
+ }
+
+ if (rep.length) {
+ nbytes = rep.length * sizeof (long);
+ netbytes = rep.length << 2;
+
+ prop_info = (XRRPropertyInfo *) Xmalloc (nbytes +
+ sizeof (XRRPropertyInfo));
+ if (prop_info == NULL) {
+ _XEatData (dpy, netbytes);
+ UnlockDisplay (dpy);
+ SyncHandle ();
+ return NULL;
+ }
+ prop_info->pending = rep.pending;
+ prop_info->range = rep.range;
+ prop_info->immutable = rep.immutable;
+ prop_info->num_values = rep.length;
+ prop_info->values = (long *) (prop_info + 1);
+
+ _XRead32 (dpy, prop_info->values, nbytes);
+ }
+
+ UnlockDisplay (dpy);
+ SyncHandle ();
+ return prop_info;
+}
+
+void
+XRRConfigureOutputProperty (Display *dpy, RROutput output, Atom property,
+ Bool pending, Bool range, int num_values,
+ long *values)
+{
+ XExtDisplayInfo *info = XRRFindDisplay(dpy);
+ xRRConfigureOutputPropertyReq *req;
+ xRRQueryVersionReq *vreq;
+ long len;
+
+ RRSimpleCheckExtension (dpy, info);
+
+ LockDisplay(dpy);
+ GetReq (RRConfigureOutputProperty, req);
+ req->reqType = info->codes->major_opcode;
+ req->randrReqType = X_RRConfigureOutputProperty;
+ req->output = output;
+ req->property = property;
+ req->pending = pending;
+ req->range = range;
+
+ len = num_values;
+ if (dpy->bigreq_size || req->length + len <= (unsigned) 65535) {
+ SetReqLen(req, len, len);
+ len = (long)num_values << 2;
+ Data32 (dpy, values, len);
+ } /* else force BadLength */
+
+ UnlockDisplay(dpy);
+ SyncHandle();
+}
+
+void
+XRRChangeOutputProperty (Display *dpy, RROutput output,
+ Atom property, Atom type,
+ int format, int mode,
+ _Xconst unsigned char *data, int nelements)
+{
+ XExtDisplayInfo *info = XRRFindDisplay(dpy);
+ xRRChangeOutputPropertyReq *req;
+ xRRQueryVersionReq *vreq;
+ long len;
+
+ RRSimpleCheckExtension (dpy, info);
+
+ LockDisplay(dpy);
+ GetReq (RRChangeOutputProperty, req);
+ req->reqType = info->codes->major_opcode;
+ req->randrReqType = X_RRChangeOutputProperty;
+ req->output = output;
+ req->property = property;
+ req->type = type;
+ req->mode = mode;
+ if (nelements < 0) {
+ req->nUnits = 0;
+ req->format = 0; /* ask for garbage, get garbage */
+ } else {
+ req->nUnits = nelements;
+ req->format = format;
+ }
+
+ switch (req->format) {
+ case 8:
+ len = ((long)nelements + 3) >> 2;
+ if (dpy->bigreq_size || req->length + len <= (unsigned) 65535) {
+ SetReqLen(req, len, len);
+ Data (dpy, (char *)data, nelements);
+ } /* else force BadLength */
+ break;
+
+ case 16:
+ len = ((long)nelements + 1) >> 1;
+ if (dpy->bigreq_size || req->length + len <= (unsigned) 65535) {
+ SetReqLen(req, len, len);
+ len = (long)nelements << 1;
+ Data16 (dpy, (short *) data, len);
+ } /* else force BadLength */
+ break;
+
+ case 32:
+ len = nelements;
+ if (dpy->bigreq_size || req->length + len <= (unsigned) 65535) {
+ SetReqLen(req, len, len);
+ len = (long)nelements << 2;
+ Data32 (dpy, (long *) data, len);
+ } /* else force BadLength */
+ break;
+
+ default:
+ /* BadValue will be generated */ ;
+ }
+
+ UnlockDisplay(dpy);
+ SyncHandle();
+}
+
+void
+XRRDeleteOutputProperty (Display *dpy, RROutput output, Atom property)
+{
+ XExtDisplayInfo *info = XRRFindDisplay(dpy);
+ xRRDeleteOutputPropertyReq *req;
+
+ RRSimpleCheckExtension (dpy, info);
+
+ LockDisplay(dpy);
+ GetReq(RRDeleteOutputProperty, req);
+ req->reqType = info->codes->major_opcode;
+ req->randrReqType = X_RRDeleteOutputProperty;
+ req->output = output;
+ req->property = property;
+ UnlockDisplay(dpy);
+ SyncHandle();
+}
+
+int
+XRRGetOutputProperty (Display *dpy, RROutput output,
+ Atom property, long offset, long length,
+ Bool delete, Bool pending, Atom req_type,
+ Atom *actual_type, int *actual_format,
+ unsigned long *nitems, unsigned long *bytes_after,
+ unsigned char **prop)
+{
+ XExtDisplayInfo *info = XRRFindDisplay(dpy);
+ xRRGetOutputPropertyReply rep;
+ xRRGetOutputPropertyReq *req;
+ int nbytes, nbytesRead;
+ int i;
+ xRRQueryVersionReq *vreq;
+
+ RRCheckExtension (dpy, info, 1);
+
+ LockDisplay (dpy);
+ GetReq (RRGetOutputProperty, req);
+ req->reqType = info->codes->major_opcode;
+ req->randrReqType = X_RRGetOutputProperty;
+ req->output = output;
+ req->property = property;
+ req->type = req_type;
+ req->longOffset = offset;
+ req->longLength = length;
+ req->delete = delete;
+ req->pending = pending;
+
+ if (!_XReply (dpy, (xReply *) &rep, 0, xFalse))
+ {
+ UnlockDisplay (dpy);
+ SyncHandle ();
+ return 1;
+ }
+
+ *prop = (unsigned char *) NULL;
+ if (rep.propertyType != None) {
+ long nbytes, netbytes;
+ /*
+ * One extra byte is malloced than is needed to contain the property
+ * data, but this last byte is null terminated and convenient for
+ * returning string properties, so the client doesn't then have to
+ * recopy the string to make it null terminated.
+ */
+ switch (rep.format) {
+ case 8:
+ nbytes = netbytes = rep.nItems;
+ if (nbytes + 1 > 0 &&
+ (*prop = (unsigned char *) Xmalloc ((unsigned)nbytes + 1)))
+ _XReadPad (dpy, (char *) *prop, netbytes);
+ break;
+
+ case 16:
+ nbytes = rep.nItems * sizeof (short);
+ netbytes = rep.nItems << 1;
+ if (nbytes + 1 > 0 &&
+ (*prop = (unsigned char *) Xmalloc ((unsigned)nbytes + 1)))
+ _XRead16Pad (dpy, (short *) *prop, netbytes);
+ break;
+
+ case 32:
+ nbytes = rep.nItems * sizeof (long);
+ netbytes = rep.nItems << 2;
+ if (nbytes + 1 > 0 &&
+ (*prop = (unsigned char *) Xmalloc ((unsigned)nbytes + 1)))
+ _XRead32 (dpy, (long *) *prop, netbytes);
+ break;
+
+ default:
+ /*
+ * This part of the code should never be reached. If it is,
+ * the server sent back a property with an invalid format.
+ */
+ _XEatData(dpy, (unsigned long) netbytes);
+ UnlockDisplay(dpy);
+ SyncHandle();
+ return(BadImplementation);
+ }
+ if (! *prop) {
+ _XEatData(dpy, (unsigned long) netbytes);
+ UnlockDisplay(dpy);
+ SyncHandle();
+ return(BadAlloc);
+ }
+ (*prop)[nbytes] = '\0';
+ }
+
+ *actual_type = rep.propertyType;
+ *actual_format = rep.format;
+ *nitems = rep.nItems;
+ *bytes_after = rep.bytesAfter;
+ UnlockDisplay (dpy);
+ SyncHandle ();
+
+ return Success;
+}
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