Xrandrint.h revision 8bd17e5f 
1/*
2 * Copyright © 2000, Compaq Computer Corporation,
3 * Copyright © 2002, Hewlett Packard, Inc.
4 *
5 * Permission to use, copy, modify, distribute, and sell this software and its
6 * documentation for any purpose is hereby granted without fee, provided that
7 * the above copyright notice appear in all copies and that both that
8 * copyright notice and this permission notice appear in supporting
9 * documentation, and that the name of Compaq or HP not be used in advertising
10 * or publicity pertaining to distribution of the software without specific,
11 * written prior permission.  HP makes no representations about the
12 * suitability of this software for any purpose.  It is provided "as is"
13 * without express or implied warranty.
14 *
15 * HP DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL HP
17 * BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
18 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
19 * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
20 * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
21 *
22 * Author:  Jim Gettys, HP Labs, Hewlett-Packard, Inc.
23 */
24
25#ifndef _XRANDRINT_H_
26#define _XRANDRINT_H_
27
28#include <X11/Xlibint.h>
29#include <X11/Xutil.h>
30#include <X11/extensions/Xext.h>
31#include <X11/extensions/extutil.h>
32#include "Xrandr.h"
33#include <X11/extensions/randr.h>
34#include <X11/extensions/randrproto.h>
35
36extern char XRRExtensionName[];
37
38#define RRCheckExtension(dpy,i,val) \
39  XextCheckExtension (dpy, i, XRRExtensionName, val)
40#define RRSimpleCheckExtension(dpy,i) \
41  XextSimpleCheckExtension (dpy, i, XRRExtensionName)
42
43XExtDisplayInfo *XRRFindDisplay (Display *dpy);
44
45#ifndef HAVE__XEATDATAWORDS
46#include <X11/Xmd.h>  /* for LONG64 on 64-bit platforms */
47#include <limits.h>
48
49static inline void _XEatDataWords(Display *dpy, unsigned long n)
50{
51# ifndef LONG64
52    if (n >= (ULONG_MAX >> 2))
53        _XIOError(dpy);
54# endif
55    _XEatData (dpy, n << 2);
56}
57#endif
58
59/* deliberately opaque internal data structure; can be extended,
60   but not reordered */
61struct _XRRScreenConfiguration {
62  Screen *screen;	/* the root window in GetScreenInfo */
63  XRRScreenSize *sizes;
64  Rotation rotations;
65  Rotation current_rotation;
66  int nsizes;
67  int current_size;
68  short current_rate;
69  Time timestamp;
70  Time config_timestamp;
71  int subpixel_order;	/* introduced in randr v0.1 */
72  short *rates;		/* introduced in randr v1.1 */
73  int nrates;
74};
75
76/*
77 * if a configure notify on the root is recieved, or
78 * an XRRScreenChangeNotify is recieved,
79 * XRRUpdateConfiguration should be called to update the X library's
80 * view of the screen configuration; it will also invalidate the cache
81 * provided by XRRScreenConfig and XRRConfig, and force a round trip
82 * when next used.  Returns invalid status if not an event type
83 * the library routine understand.
84 */
85
86/* we cache one screen configuration/screen */
87
88typedef struct _XRandRInfo {
89  XRRScreenConfiguration **config;
90  int major_version, minor_version;	/* major_version = -1 means we don't know */
91  Bool has_rates;			/* Server supports refresh rates */
92} XRandRInfo;
93
94typedef struct _randrVersionState {
95    unsigned long   version_seq;
96    Bool	    error;
97    int		    major_version;
98    int		    minor_version;
99} _XRRVersionState;
100
101Bool
102_XRRVersionHandler (Display	*dpy,
103		    xReply	*rep,
104		    char	*buf,
105		    int		len,
106		    XPointer    data);
107
108_X_HIDDEN Bool
109_XRRHasRates (int major, int minor);
110
111#endif /* _XRANDRINT_H_ */
112