diff options
Diffstat (limited to 'src/XrrProviderProperty.c')
| -rw-r--r-- | src/XrrProviderProperty.c | 339 |
1 files changed, 339 insertions, 0 deletions
diff --git a/src/XrrProviderProperty.c b/src/XrrProviderProperty.c new file mode 100644 index 0000000..c8c08e9 --- /dev/null +++ b/src/XrrProviderProperty.c @@ -0,0 +1,339 @@ +/* + * 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 * +XRRListProviderProperties (Display *dpy, RRProvider provider, int *nprop) +{ + XExtDisplayInfo *info = XRRFindDisplay(dpy); + xRRListProviderPropertiesReply rep; + xRRListProviderPropertiesReq *req; + int nbytes, rbytes; + Atom *props = NULL; + + RRCheckExtension (dpy, info, NULL); + + LockDisplay (dpy); + GetReq (RRListProviderProperties, req); + req->reqType = info->codes->major_opcode; + req->randrReqType = X_RRListProviderProperties; + req->provider = provider; + + if (!_XReply (dpy, (xReply *) &rep, 0, xFalse)) { + UnlockDisplay (dpy); + SyncHandle (); + *nprop = 0; + return NULL; + } + + if (rep.nAtoms) { + rbytes = rep.nAtoms * sizeof (Atom); + nbytes = rep.nAtoms << 2; + + props = (Atom *) Xmalloc (rbytes); + if (props == NULL) { + _XEatData (dpy, nbytes); + UnlockDisplay (dpy); + SyncHandle (); + *nprop = 0; + return NULL; + } + + _XRead32 (dpy, props, nbytes); + } + + *nprop = rep.nAtoms; + UnlockDisplay (dpy); + SyncHandle (); + return props; +} + +XRRPropertyInfo * +XRRQueryProviderProperty (Display *dpy, RRProvider provider, Atom property) +{ + XExtDisplayInfo *info = XRRFindDisplay(dpy); + xRRQueryProviderPropertyReply rep; + xRRQueryProviderPropertyReq *req; + int rbytes, nbytes; + XRRPropertyInfo *prop_info; + + RRCheckExtension (dpy, info, NULL); + + LockDisplay (dpy); + GetReq (RRQueryProviderProperty, req); + req->reqType = info->codes->major_opcode; + req->randrReqType = X_RRQueryProviderProperty; + req->provider = provider; + req->property = property; + + if (!_XReply (dpy, (xReply *) &rep, 0, xFalse)) { + UnlockDisplay (dpy); + SyncHandle (); + return NULL; + } + + rbytes = sizeof (XRRPropertyInfo) + rep.length * sizeof (long); + nbytes = rep.length << 2; + + prop_info = (XRRPropertyInfo *) Xmalloc (rbytes); + if (prop_info == NULL) { + _XEatData (dpy, nbytes); + 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; + if (rep.length != 0) { + prop_info->values = (long *) (prop_info + 1); + _XRead32 (dpy, prop_info->values, nbytes); + } else { + prop_info->values = NULL; + } + + UnlockDisplay (dpy); + SyncHandle (); + return prop_info; +} + +void +XRRConfigureProviderProperty (Display *dpy, RRProvider provider, Atom property, + Bool pending, Bool range, int num_values, + long *values) +{ + XExtDisplayInfo *info = XRRFindDisplay(dpy); + xRRConfigureProviderPropertyReq *req; + long len; + + RRSimpleCheckExtension (dpy, info); + + LockDisplay(dpy); + GetReq (RRConfigureProviderProperty, req); + req->reqType = info->codes->major_opcode; + req->randrReqType = X_RRConfigureProviderProperty; + req->provider = provider; + 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 +XRRChangeProviderProperty (Display *dpy, RRProvider provider, + Atom property, Atom type, + int format, int mode, + _Xconst unsigned char *data, int nelements) +{ + XExtDisplayInfo *info = XRRFindDisplay(dpy); + xRRChangeProviderPropertyReq *req; + long len; + + RRSimpleCheckExtension (dpy, info); + + LockDisplay(dpy); + GetReq (RRChangeProviderProperty, req); + req->reqType = info->codes->major_opcode; + req->randrReqType = X_RRChangeProviderProperty; + req->provider = provider; + 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 +XRRDeleteProviderProperty (Display *dpy, RRProvider provider, Atom property) +{ + XExtDisplayInfo *info = XRRFindDisplay(dpy); + xRRDeleteProviderPropertyReq *req; + + RRSimpleCheckExtension (dpy, info); + + LockDisplay(dpy); + GetReq(RRDeleteProviderProperty, req); + req->reqType = info->codes->major_opcode; + req->randrReqType = X_RRDeleteProviderProperty; + req->provider = provider; + req->property = property; + UnlockDisplay(dpy); + SyncHandle(); +} + +int +XRRGetProviderProperty (Display *dpy, RRProvider provider, + 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); + xRRGetProviderPropertyReply rep; + xRRGetProviderPropertyReq *req; + long nbytes, rbytes; + + RRCheckExtension (dpy, info, 1); + + LockDisplay (dpy); + GetReq (RRGetProviderProperty, req); + req->reqType = info->codes->major_opcode; + req->randrReqType = X_RRGetProviderProperty; + req->provider = provider; + 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 ((xError *)&rep)->errorCode; + } + + *prop = (unsigned char *) NULL; + if (rep.propertyType != None) { + /* + * 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 = rep.nItems; + rbytes = rep.nItems + 1; + if (rbytes > 0 && + (*prop = (unsigned char *) Xmalloc ((unsigned)rbytes))) + _XReadPad (dpy, (char *) *prop, nbytes); + break; + + case 16: + nbytes = rep.nItems << 1; + rbytes = rep.nItems * sizeof (short) + 1; + if (rbytes > 0 && + (*prop = (unsigned char *) Xmalloc ((unsigned)rbytes))) + _XRead16Pad (dpy, (short *) *prop, nbytes); + break; + + case 32: + nbytes = rep.nItems << 2; + rbytes = rep.nItems * sizeof (long) + 1; + if (rbytes > 0 && + (*prop = (unsigned char *) Xmalloc ((unsigned)rbytes))) + _XRead32 (dpy, (long *) *prop, nbytes); + break; + + default: + /* + * This part of the code should never be reached. If it is, + * the server sent back a property with an invalid format. + */ + nbytes = rep.length << 2; + _XEatData(dpy, (unsigned long) nbytes); + UnlockDisplay(dpy); + SyncHandle(); + return(BadImplementation); + } + if (! *prop) { + _XEatData(dpy, (unsigned long) nbytes); + UnlockDisplay(dpy); + SyncHandle(); + return(BadAlloc); + } + (*prop)[rbytes - 1] = '\0'; + } + + *actual_type = rep.propertyType; + *actual_format = rep.format; + *nitems = rep.nItems; + *bytes_after = rep.bytesAfter; + UnlockDisplay (dpy); + SyncHandle (); + + return Success; +} |