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author | Reinhard Tartler <siretart@tauware.de> | 2011-10-10 17:43:39 +0200 |
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committer | Reinhard Tartler <siretart@tauware.de> | 2011-10-10 17:43:39 +0200 |
commit | f4092abdf94af6a99aff944d6264bc1284e8bdd4 (patch) | |
tree | 2ac1c9cc16ceb93edb2c4382c088dac5aeafdf0f /nx-X11/lib/Xrandr/Xrandr.c | |
parent | a840692edc9c6d19cd7c057f68e39c7d95eb767d (diff) | |
download | nx-libs-f4092abdf94af6a99aff944d6264bc1284e8bdd4.tar.gz nx-libs-f4092abdf94af6a99aff944d6264bc1284e8bdd4.tar.bz2 nx-libs-f4092abdf94af6a99aff944d6264bc1284e8bdd4.zip |
Imported nx-X11-3.1.0-1.tar.gznx-X11/3.1.0-1
Summary: Imported nx-X11-3.1.0-1.tar.gz
Keywords:
Imported nx-X11-3.1.0-1.tar.gz
into Git repository
Diffstat (limited to 'nx-X11/lib/Xrandr/Xrandr.c')
-rw-r--r-- | nx-X11/lib/Xrandr/Xrandr.c | 744 |
1 files changed, 744 insertions, 0 deletions
diff --git a/nx-X11/lib/Xrandr/Xrandr.c b/nx-X11/lib/Xrandr/Xrandr.c new file mode 100644 index 000000000..32537b403 --- /dev/null +++ b/nx-X11/lib/Xrandr/Xrandr.c @@ -0,0 +1,744 @@ +/* + * $XFree86: xc/lib/Xrandr/Xrandr.c,v 1.13tsi Exp $ + * + * Copyright © 2000 Compaq Computer Corporation, Inc. + * Copyright © 2002 Hewlett Packard Company, 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 COMPAQ + * 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, HP. + */ + +#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" + +XExtensionInfo XRRExtensionInfo; +char XRRExtensionName[] = RANDR_NAME; + +static Bool XRRWireToEvent(Display *dpy, XEvent *event, xEvent *wire); +static Status XRREventToWire(Display *dpy, XEvent *event, xEvent *wire); + +static XRRScreenConfiguration *_XRRGetScreenInfo (Display *dpy, Window window); + +static int +XRRCloseDisplay (Display *dpy, XExtCodes *codes); + +static /* const */ XExtensionHooks rr_extension_hooks = { + NULL, /* create_gc */ + NULL, /* copy_gc */ + NULL, /* flush_gc */ + NULL, /* free_gc */ + NULL, /* create_font */ + NULL, /* free_font */ + XRRCloseDisplay, /* close_display */ + XRRWireToEvent, /* wire_to_event */ + XRREventToWire, /* event_to_wire */ + NULL, /* error */ + NULL, /* error_string */ +}; + +static Bool XRRWireToEvent(Display *dpy, XEvent *event, xEvent *wire) +{ + XExtDisplayInfo *info = XRRFindDisplay(dpy); + XRRScreenChangeNotifyEvent *aevent; + xRRScreenChangeNotifyEvent *awire; + + RRCheckExtension(dpy, info, False); + + switch ((wire->u.u.type & 0x7F) - info->codes->first_event) + { + case RRScreenChangeNotify: + awire = (xRRScreenChangeNotifyEvent *) wire; + aevent = (XRRScreenChangeNotifyEvent *) event; + aevent->type = awire->type & 0x7F; + aevent->serial = _XSetLastRequestRead(dpy, + (xGenericReply *) wire); + aevent->send_event = (awire->type & 0x80) != 0; + aevent->display = dpy; + aevent->window = awire->window; + aevent->root = awire->root; + aevent->timestamp = awire->timestamp; + aevent->config_timestamp = awire->configTimestamp; + aevent->size_index = awire->sizeID; + aevent->subpixel_order = awire->subpixelOrder; + aevent->rotation = awire->rotation; + aevent->width = awire->widthInPixels; + aevent->height = awire->heightInPixels; + aevent->mwidth = awire->widthInMillimeters; + aevent->mheight = awire->heightInMillimeters; + return True; + } + + return False; +} + +static Status XRREventToWire(Display *dpy, XEvent *event, xEvent *wire) +{ + XExtDisplayInfo *info = XRRFindDisplay(dpy); + XRRScreenChangeNotifyEvent *aevent; + xRRScreenChangeNotifyEvent *awire; + + RRCheckExtension(dpy, info, False); + + switch ((event->type & 0x7F) - info->codes->first_event) + { + case RRScreenChangeNotify: + awire = (xRRScreenChangeNotifyEvent *) wire; + aevent = (XRRScreenChangeNotifyEvent *) event; + awire->type = aevent->type | (aevent->send_event ? 0x80 : 0); + awire->rotation = (CARD8) aevent->rotation; + awire->sequenceNumber = aevent->serial & 0xFFFF; + awire->timestamp = aevent->timestamp; + awire->configTimestamp = aevent->config_timestamp; + awire->root = aevent->root; + awire->window = aevent->window; + awire->sizeID = aevent->size_index; + awire->subpixelOrder = aevent->subpixel_order; + awire->widthInPixels = aevent->width; + awire->heightInPixels = aevent->height; + awire->widthInMillimeters = aevent->mwidth; + awire->heightInMillimeters = aevent->mheight; + return True; + } + return False; +} + +XExtDisplayInfo * +XRRFindDisplay (Display *dpy) +{ + XExtDisplayInfo *dpyinfo; + XRandRInfo *xrri; + int i, numscreens; + + dpyinfo = XextFindDisplay (&XRRExtensionInfo, dpy); + if (!dpyinfo) { + dpyinfo = XextAddDisplay (&XRRExtensionInfo, dpy, + XRRExtensionName, + &rr_extension_hooks, + RRNumberEvents, 0); + numscreens = ScreenCount(dpy); + xrri = Xmalloc (sizeof(XRandRInfo) + + sizeof(char *) * numscreens); + xrri->config = (XRRScreenConfiguration **)(xrri + 1); + for(i = 0; i < numscreens; i++) + xrri->config[i] = NULL; + xrri->major_version = -1; + dpyinfo->data = (char *) xrri; + } + return dpyinfo; +} + +static int +XRRCloseDisplay (Display *dpy, XExtCodes *codes) +{ + int i; + XRRScreenConfiguration **configs; + XExtDisplayInfo *info = XRRFindDisplay (dpy); + XRandRInfo *xrri; + + LockDisplay(dpy); + /* + * free cached data + */ + if (XextHasExtension(info)) { + xrri = (XRandRInfo *) info->data; + if (xrri) { + configs = xrri->config; + + for (i = 0; i < ScreenCount(dpy); i++) { + if (configs[i] != NULL) XFree (configs[i]); + } + XFree (xrri); + } + } + UnlockDisplay(dpy); + return XextRemoveDisplay (&XRRExtensionInfo, dpy); +} + + +Rotation XRRConfigRotations(XRRScreenConfiguration *config, Rotation *current_rotation) +{ + *current_rotation = config->current_rotation; + return config->rotations; +} + +XRRScreenSize *XRRConfigSizes(XRRScreenConfiguration *config, int *nsizes) +{ + *nsizes = config->nsizes; + return config->sizes; +} + +short *XRRConfigRates (XRRScreenConfiguration *config, int sizeID, int *nrates) +{ + short *r = config->rates; + int nents = config->nrates; + + /* Skip over the intervening rate lists */ + while (sizeID > 0 && nents > 0) + { + int i = (*r + 1); + r += i; + nents -= i; + sizeID--; + } + if (!nents) + { + *nrates = 0; + return 0; + } + *nrates = (int) *r; + return r + 1; +} + +Time XRRConfigTimes (XRRScreenConfiguration *config, Time *config_timestamp) +{ + *config_timestamp = config->config_timestamp; + return config->timestamp; +} + + +SizeID XRRConfigCurrentConfiguration (XRRScreenConfiguration *config, + Rotation *rotation) +{ + *rotation = (Rotation) config->current_rotation; + return (SizeID) config->current_size; +} + +short XRRConfigCurrentRate (XRRScreenConfiguration *config) +{ + return config->current_rate; +} + +/* + * Go get the screen configuration data and salt it away for future use; + * returns NULL if extension not supported + */ +static XRRScreenConfiguration *_XRRValidateCache (Display *dpy, int screen) +{ + XExtDisplayInfo *info = XRRFindDisplay (dpy); + XRRScreenConfiguration **configs; + XRandRInfo *xrri; + + if (XextHasExtension(info)) { + xrri = (XRandRInfo *) info->data; + configs = xrri->config; + + if (configs[screen] == NULL) + configs[screen] = _XRRGetScreenInfo (dpy, RootWindow(dpy, screen)); + return configs[screen]; + } else { + return NULL; + } +} + +/* given a screen, return the information from the (possibly) cached data */ +Rotation XRRRotations(Display *dpy, int screen, Rotation *current_rotation) +{ + XRRScreenConfiguration *config; + Rotation cr; + LockDisplay(dpy); + if ((config = _XRRValidateCache(dpy, screen))) { + *current_rotation = config->current_rotation; + cr = config->rotations; + UnlockDisplay(dpy); + return cr; + } + else { + UnlockDisplay(dpy); + *current_rotation = RR_Rotate_0; + return 0; /* no rotations supported */ + } +} + +/* given a screen, return the information from the (possibly) cached data */ +XRRScreenSize *XRRSizes(Display *dpy, int screen, int *nsizes) +{ + XRRScreenConfiguration *config; + XRRScreenSize *sizes; + + LockDisplay(dpy); + if ((config = _XRRValidateCache(dpy, screen))) { + *nsizes = config->nsizes; + sizes = config->sizes; + UnlockDisplay(dpy); + return sizes; + } + else { + UnlockDisplay(dpy); + *nsizes = 0; + return NULL; + } +} + +short *XRRRates (Display *dpy, int screen, int sizeID, int *nrates) +{ + XRRScreenConfiguration *config; + short *rates; + + LockDisplay(dpy); + if ((config = _XRRValidateCache(dpy, screen))) { + rates = XRRConfigRates (config, sizeID, nrates); + UnlockDisplay(dpy); + return rates; + } + else { + UnlockDisplay(dpy); + *nrates = 0; + return NULL; + } +} + +/* given a screen, return the information from the (possibly) cached data */ +Time XRRTimes (Display *dpy, int screen, Time *config_timestamp) +{ + XRRScreenConfiguration *config; + Time ts; + + LockDisplay(dpy); + if ((config = _XRRValidateCache(dpy, screen))) { + *config_timestamp = config->config_timestamp; + ts = config->timestamp; + UnlockDisplay(dpy); + return ts; + } else { + UnlockDisplay(dpy); + return CurrentTime; + } +} + +int XRRRootToScreen(Display *dpy, Window root) +{ + int snum; + for (snum = 0; snum < ScreenCount(dpy); snum++) { + if (RootWindow(dpy, snum) == root) return snum; + } + return -1; +} + + +Bool XRRQueryExtension (Display *dpy, int *event_basep, int *error_basep) +{ + XExtDisplayInfo *info = XRRFindDisplay (dpy); + + if (XextHasExtension(info)) { + *event_basep = info->codes->first_event; + *error_basep = info->codes->first_error; + return True; + } else { + return False; + } +} + +static Bool +_XRRHasRates (int major, int minor) +{ + return major > 1 || (major == 1 && minor >= 1); +} + +Status XRRQueryVersion (Display *dpy, + int *major_versionp, + int *minor_versionp) +{ + XExtDisplayInfo *info = XRRFindDisplay (dpy); + xRRQueryVersionReply rep; + xRRQueryVersionReq *req; + XRandRInfo *xrri; + + RRCheckExtension (dpy, info, 0); + + xrri = (XRandRInfo *) info->data; + + /* + * only get the version information from the server if we don't have it already + */ + if (xrri->major_version == -1) { + LockDisplay (dpy); + GetReq (RRQueryVersion, req); + req->reqType = info->codes->major_opcode; + req->randrReqType = X_RRQueryVersion; + req->majorVersion = RANDR_MAJOR; + req->minorVersion = RANDR_MINOR; + if (!_XReply (dpy, (xReply *) &rep, 0, xTrue)) { + UnlockDisplay (dpy); + SyncHandle (); + return 0; + } + xrri->major_version = rep.majorVersion; + xrri->minor_version = rep.minorVersion; + xrri->has_rates = _XRRHasRates (xrri->major_version, xrri->minor_version); + } + *major_versionp = xrri->major_version; + *minor_versionp = xrri->minor_version; + UnlockDisplay (dpy); + SyncHandle (); + return 1; +} + +typedef struct _randrVersionState { + unsigned long version_seq; + Bool error; + int major_version; + int minor_version; +} _XRRVersionState; + +static Bool +_XRRVersionHandler (Display *dpy, + xReply *rep, + char *buf, + int len, + XPointer data) +{ + xRRQueryVersionReply replbuf; + xRRQueryVersionReply *repl; + _XRRVersionState *state = (_XRRVersionState *) data; + + if (dpy->last_request_read != state->version_seq) + return False; + if (rep->generic.type == X_Error) + { + state->error = True; + return False; + } + repl = (xRRQueryVersionReply *) + _XGetAsyncReply(dpy, (char *)&replbuf, rep, buf, len, + (SIZEOF(xRRQueryVersionReply) - SIZEOF(xReply)) >> 2, + True); + state->major_version = repl->majorVersion; + state->minor_version = repl->minorVersion; + return True; +} +/* need a version that does not hold the display lock */ +static XRRScreenConfiguration *_XRRGetScreenInfo (Display *dpy, Window window) +{ + XExtDisplayInfo *info = XRRFindDisplay(dpy); + xRRGetScreenInfoReply rep; + xRRGetScreenInfoReq *req; + _XAsyncHandler async; + _XRRVersionState async_state; + int nbytes, nbytesRead, rbytes; + int i; + xScreenSizes size; + struct _XRRScreenConfiguration *scp; + XRRScreenSize *ssp; + short *rates; + xRRQueryVersionReq *vreq; + XRandRInfo *xrri; + Bool getting_version = False; + + RRCheckExtension (dpy, info, 0); + + 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 (RRGetScreenInfo, req); + req->reqType = info->codes->major_opcode; + req->randrReqType = X_RRGetScreenInfo; + req->window = window; + + if (!_XReply (dpy, (xReply *) &rep, 0, xFalse)) + { + if (getting_version) + DeqAsyncHandler (dpy, &async); + SyncHandle (); + return NULL; + } + if (getting_version) + { + DeqAsyncHandler (dpy, &async); + if (async_state.error) + { + SyncHandle(); + } + xrri->major_version = async_state.major_version; + xrri->minor_version = async_state.minor_version; + xrri->has_rates = _XRRHasRates (xrri->minor_version, xrri->major_version); + } + + /* + * Make the reply compatible with v1.1 + */ + if (!xrri->has_rates) + { + rep.rate = 0; + rep.nrateEnts = 0; + } + + nbytes = (long) rep.length << 2; + + nbytesRead = (long) (rep.nSizes * SIZEOF (xScreenSizes) + + ((rep.nrateEnts + 1)& ~1) * 2 /* SIZEOF (CARD16) */); + + /* + * 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 (XRRScreenConfiguration) + + (rep.nSizes * sizeof (XRRScreenSize) + + rep.nrateEnts * sizeof (int)); + + scp = (struct _XRRScreenConfiguration *) Xmalloc(rbytes); + if (scp == NULL) { + _XEatData (dpy, (unsigned long) nbytes); + SyncHandle (); + return NULL; + } + + + ssp = (XRRScreenSize *)(scp + 1); + rates = (short *) (ssp + rep.nSizes); + + /* set up the screen configuration structure */ + scp->screen = + ScreenOfDisplay (dpy, XRRRootToScreen(dpy, rep.root)); + + scp->sizes = ssp; + scp->rates = rates; + scp->rotations = rep.setOfRotations; + scp->current_size = rep.sizeID; + scp->current_rate = rep.rate; + scp->current_rotation = rep.rotation; + scp->timestamp = rep.timestamp; + scp->config_timestamp = rep.configTimestamp; + scp->nsizes = rep.nSizes; + scp->nrates = rep.nrateEnts; + + /* + * Time to unpack the data from the server. + */ + + /* + * First the size information + */ + for (i = 0; i < rep.nSizes; i++) { + _XReadPad (dpy, (char *) &size, SIZEOF (xScreenSizes)); + + ssp[i].width = size.widthInPixels; + ssp[i].height = size.heightInPixels; + ssp[i].mwidth = size.widthInMillimeters; + ssp[i].mheight = size.heightInMillimeters; + } + /* + * And the rates + */ + _XRead16Pad (dpy, rates, 2 /* SIZEOF (CARD16) */ * rep.nrateEnts); + + /* + * Skip any extra data + */ + if (nbytes > nbytesRead) + _XEatData (dpy, (unsigned long) (nbytes - nbytesRead)); + + return (XRRScreenConfiguration *)(scp); +} + +XRRScreenConfiguration *XRRGetScreenInfo (Display *dpy, Window window) +{ + XRRScreenConfiguration *config; + XRRFindDisplay(dpy); + LockDisplay (dpy); + config = _XRRGetScreenInfo(dpy, window); + UnlockDisplay (dpy); + SyncHandle (); + return config; +} + + +void XRRFreeScreenConfigInfo (XRRScreenConfiguration *config) +{ + Xfree (config); +} + + +/* + * in protocol version 0.1, routine added to allow selecting for new events. + */ + +void XRRSelectInput (Display *dpy, Window window, int mask) +{ + XExtDisplayInfo *info = XRRFindDisplay (dpy); + xRRSelectInputReq *req; + + RRSimpleCheckExtension (dpy, info); + + LockDisplay (dpy); + GetReq (RRSelectInput, req); + req->reqType = info->codes->major_opcode; + req->randrReqType = X_RRSelectInput; + req->window = window; + req->enable = 0; + if (mask) req->enable = mask; + UnlockDisplay (dpy); + SyncHandle (); + return; +} + +Status XRRSetScreenConfigAndRate (Display *dpy, + XRRScreenConfiguration *config, + Drawable draw, + int size_index, + Rotation rotation, + short rate, + Time timestamp) +{ + XExtDisplayInfo *info = XRRFindDisplay (dpy); + xRRSetScreenConfigReply rep; + XRandRInfo *xrri; + int major, minor; + + RRCheckExtension (dpy, info, 0); + + /* Make sure has_rates is set */ + if (!XRRQueryVersion (dpy, &major, &minor)) + return 0; + + LockDisplay (dpy); + xrri = (XRandRInfo *) info->data; + if (xrri->has_rates) + { + xRRSetScreenConfigReq *req; + GetReq (RRSetScreenConfig, req); + req->reqType = info->codes->major_opcode; + req->randrReqType = X_RRSetScreenConfig; + req->drawable = draw; + req->sizeID = size_index; + req->rotation = rotation; + req->timestamp = timestamp; + req->configTimestamp = config->config_timestamp; + req->rate = rate; + } + else + { + xRR1_0SetScreenConfigReq *req; + GetReq (RR1_0SetScreenConfig, req); + req->reqType = info->codes->major_opcode; + req->randrReqType = X_RRSetScreenConfig; + req->drawable = draw; + req->sizeID = size_index; + req->rotation = rotation; + req->timestamp = timestamp; + req->configTimestamp = config->config_timestamp; + } + + (void) _XReply (dpy, (xReply *) &rep, 0, xTrue); + + if (rep.status == RRSetConfigSuccess) { + /* if we succeed, set our view of reality to what we set it to */ + config->config_timestamp = rep.newConfigTimestamp; + config->timestamp = rep.newTimestamp; + config->screen = ScreenOfDisplay (dpy, XRRRootToScreen(dpy, rep.root)); + config->current_size = size_index; + config->current_rotation = rotation; + } + UnlockDisplay (dpy); + SyncHandle (); + return(rep.status); +} + +Status XRRSetScreenConfig (Display *dpy, + XRRScreenConfiguration *config, + Drawable draw, + int size_index, + Rotation rotation, Time timestamp) +{ + return XRRSetScreenConfigAndRate (dpy, config, draw, size_index, + rotation, 0, timestamp); +} + +int XRRUpdateConfiguration(XEvent *event) +{ + XRRScreenChangeNotifyEvent *scevent; + XConfigureEvent *rcevent; + Display *dpy = event->xany.display; + XExtDisplayInfo *info; + XRandRInfo *xrri; + int snum; + + /* first, see if it is a vanilla configure notify event */ + if (event->type == ConfigureNotify) { + rcevent = (XConfigureEvent *) event; + snum = XRRRootToScreen(dpy, rcevent->window); + dpy->screens[snum].width = rcevent->width; + dpy->screens[snum].height = rcevent->height; + return 1; + } + + info = XRRFindDisplay(dpy); + RRCheckExtension (dpy, info, 0); + + switch (event->type - info->codes->first_event) { + case RRScreenChangeNotify: + scevent = (XRRScreenChangeNotifyEvent *) event; + snum = XRRRootToScreen(dpy, + ((XRRScreenChangeNotifyEvent *) event)->root); + if (scevent->rotation & (RR_Rotate_90 | RR_Rotate_270)) { + dpy->screens[snum].width = scevent->height; + dpy->screens[snum].height = scevent->width; + dpy->screens[snum].mwidth = scevent->mheight; + dpy->screens[snum].mheight = scevent->mwidth; + } else { + dpy->screens[snum].width = scevent->width; + dpy->screens[snum].height = scevent->height; + dpy->screens[snum].mwidth = scevent->mwidth; + dpy->screens[snum].mheight = scevent->mheight; + } + XRenderSetSubpixelOrder (dpy, snum, scevent->subpixel_order); + break; + default: + return 0; + } + xrri = (XRandRInfo *) info->data; + /* + * so the next time someone wants some data, it will be fetched; + * it might be better to force the round trip immediately, but + * I dislike pounding the server simultaneously when not necessary + */ + if (xrri->config[snum] != NULL) { + XFree (xrri->config[snum]); + xrri->config[snum] = NULL; + } + return 1; +} |