diff options
Diffstat (limited to 'src/Xrandr.c')
| -rw-r--r-- | src/Xrandr.c | 450 |
1 files changed, 450 insertions, 0 deletions
diff --git a/src/Xrandr.c b/src/Xrandr.c new file mode 100644 index 0000000..8ab1eae --- /dev/null +++ b/src/Xrandr.c @@ -0,0 +1,450 @@ +/* + * 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" + +static XExtensionInfo XRRExtensionInfo; +_X_HIDDEN char XRRExtensionName[] = RANDR_NAME; + +static Bool XRRWireToEvent(Display *dpy, XEvent *event, xEvent *wire); +static Status XRREventToWire(Display *dpy, XEvent *event, xEvent *wire); + +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); + + RRCheckExtension(dpy, info, False); + + switch ((wire->u.u.type & 0x7F) - info->codes->first_event) + { + case RRScreenChangeNotify: { + XRRScreenChangeNotifyEvent *aevent= (XRRScreenChangeNotifyEvent *) event; + xRRScreenChangeNotifyEvent *awire = (xRRScreenChangeNotifyEvent *) wire; + 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; + } + case RRNotify: { + switch (wire->u.u.detail) { + case RRNotify_OutputChange: { + XRROutputChangeNotifyEvent *aevent = (XRROutputChangeNotifyEvent *) event; + xRROutputChangeNotifyEvent *awire = (xRROutputChangeNotifyEvent *) wire; + 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->subtype = awire->subCode; + aevent->output = awire->output; + aevent->crtc = awire->crtc; + aevent->mode = awire->mode; + aevent->rotation = awire->rotation; + aevent->connection = awire->connection; + aevent->subpixel_order = awire->subpixelOrder; + return True; + } + case RRNotify_CrtcChange: { + XRRCrtcChangeNotifyEvent *aevent = (XRRCrtcChangeNotifyEvent *) event; + xRRCrtcChangeNotifyEvent *awire = (xRRCrtcChangeNotifyEvent *) wire; + 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->subtype = awire->subCode; + aevent->crtc = awire->crtc; + aevent->mode = awire->mode; + aevent->rotation = awire->rotation; + aevent->x = awire->x; + aevent->y = awire->y; + aevent->width = awire->width; + aevent->height = awire->height; + return True; + } + case RRNotify_OutputProperty: { + XRROutputPropertyNotifyEvent *aevent = (XRROutputPropertyNotifyEvent *) event; + xRROutputPropertyNotifyEvent *awire = (xRROutputPropertyNotifyEvent *) wire; + 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->subtype = awire->subCode; + aevent->output = awire->output; + aevent->property = awire->atom; + aevent->timestamp = awire->timestamp; + aevent->state = awire->state; + return True; + } + + break; + } + } + } + + return False; +} + +static Status XRREventToWire(Display *dpy, XEvent *event, xEvent *wire) +{ + XExtDisplayInfo *info = XRRFindDisplay(dpy); + + RRCheckExtension(dpy, info, False); + + switch ((event->type & 0x7F) - info->codes->first_event) + { + case RRScreenChangeNotify: { + xRRScreenChangeNotifyEvent *awire = (xRRScreenChangeNotifyEvent *) wire; + XRRScreenChangeNotifyEvent *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; + } + case RRNotify: { + xRRCrtcChangeNotifyEvent *awire = (xRRCrtcChangeNotifyEvent *) wire; + XRRNotifyEvent *aevent = (XRRNotifyEvent *) event; + awire->type = aevent->type | (aevent->send_event ? 0x80 : 0); + awire->sequenceNumber = aevent->serial & 0xFFFF; + awire->subCode = aevent->subtype; + switch (aevent->subtype) { + case RRNotify_OutputChange: { + xRROutputChangeNotifyEvent *awire = (xRROutputChangeNotifyEvent *) wire; + XRROutputChangeNotifyEvent *aevent = (XRROutputChangeNotifyEvent *) event; + awire->window = aevent->window; + awire->output = aevent->output; + awire->crtc = aevent->crtc; + awire->mode = aevent->mode; + awire->rotation = aevent->rotation; + awire->connection = aevent->connection; + awire->subpixelOrder = aevent->subpixel_order; + return True; + } + case RRNotify_CrtcChange: { + xRRCrtcChangeNotifyEvent *awire = (xRRCrtcChangeNotifyEvent *) wire; + XRRCrtcChangeNotifyEvent *aevent = (XRRCrtcChangeNotifyEvent *) event; + awire->window = aevent->window; + awire->crtc = aevent->crtc; + awire->mode = aevent->mode; + awire->rotation = aevent->rotation; + awire->x = aevent->x; + awire->y = aevent->y; + awire->width = aevent->width; + awire->height = aevent->height; + return True; + } + case RRNotify_OutputProperty: { + xRROutputPropertyNotifyEvent *awire = (xRROutputPropertyNotifyEvent *) wire; + XRROutputPropertyNotifyEvent *aevent = (XRROutputPropertyNotifyEvent *) event; + awire->window = aevent->window; + awire->output = aevent->output; + awire->atom = aevent->property; + awire->timestamp = aevent->timestamp; + awire->state = aevent->state; + return True; + } + } + } + } + return False; +} + +_X_HIDDEN 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, NULL); + 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); +} + +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_base_return, + int *error_base_return) +{ + XExtDisplayInfo *info = XRRFindDisplay (dpy); + + if (XextHasExtension(info)) { + *event_base_return = info->codes->first_event; + *error_base_return = info->codes->first_error; + return True; + } else { + return False; + } +} + +_X_HIDDEN 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); + UnlockDisplay (dpy); + SyncHandle (); + } + *major_versionp = xrri->major_version; + *minor_versionp = xrri->minor_version; + return 1; +} + +_X_HIDDEN 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; +} + +/* + * 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; +} + +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); + if (snum != -1) { + 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; +} |