components/x11/libdga/src/dga_internaldefs.h

   1 /* Copyright (c) 1993, 1994, Oracle and/or its affiliates. All rights reserved.
   2  *
   3  * Permission is hereby granted, free of charge, to any person obtaining a
   4  * copy of this software and associated documentation files (the "Software"),
   5  * to deal in the Software without restriction, including without limitation
   6  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   7  * and/or sell copies of the Software, and to permit persons to whom the
   8  * Software is furnished to do so, subject to the following conditions:
   9  *
  10  * The above copyright notice and this permission notice (including the next
  11  * paragraph) shall be included in all copies or substantial portions of the
  12  * Software.
  13  *
  14  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  15  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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  22
  23
  24 #ifndef _DGA_INTERNALDEFS_H
  25 #define _DGA_INTERNALDEFS_H
  26
  27 #include "dga_externaldefs.h"
  28 /*
  29 ** Defined symbols and macros used internally within DGA
  30 */
  31
  32 #define DGA_MBFLIP_VIDEO                0
  33 #define DGA_MBFLIP_COPY                 1
  34
  35 /* Basic changes - attribute changes */
  36 #define DGA_CHANGE_CLIP         (1L<<0)
  37 #define DGA_CHANGE_CURSOR       (1L<<1)
  38 #define DGA_CHANGE_BSTORE       (1L<<2)
  39 #define DGA_CHANGE_CACHE        (1L<<3)
  40 #define DGA_CHANGE_ZOMBIE       (1L<<4)
  41
  42 /* Basic changes - "major boundary" changes */
  43 #define DGA_CHANGE_MBUFSET      (1L<<5)
  44 #define DGA_CHANGE_ALIAS        (1L<<6)
  45
  46 /* Always a derivative change */
  47 #define DGA_CHANGE_SITE         (1L<<7)
  48
  49 /* Device dependent information change */
  50 #define DGA_CHANGE_DEVINFO      (1L<<8)
  51
  52 /* Overlay state information change */
  53 #define DGA_CHANGE_OVLSTATE     (1L<<9)
  54
  55 #define DGA_WIN_CHANGEABLE_ATTRS \
  56     (DGA_CHANGE_CLIP | DGA_CHANGE_CURSOR | DGA_CHANGE_BSTORE)
  57
  58 /* note: bstore needs to be included because prev lock subject could have
  59    been a win with bstore and vmbufs never have bstore */
  60 #define DGA_VMBUF_CHANGEABLE_ATTRS \
  61     (DGA_CHANGE_CLIP |  DGA_CHANGE_CURSOR | DGA_CHANGE_BSTORE)
  62
  63 /* note: bstore needs to be included because prev lock subject could have
  64    been a win with bstore and nmbufs never have bstore */
  65 #define DGA_NMBUF_CHANGEABLE_ATTRS \
  66     (DGA_CHANGE_CLIP |  DGA_CHANGE_CURSOR | DGA_CHANGE_BSTORE | DGA_CHANGE_CACHE)
  67
  68 #define DGA_LOCKSUBJ_INVALID    (-2)
  69
  70 #define DGA_LOCKSUBJ_VALID(dgawin, lockSubj) \
  71     ((lockSubj) != DGA_LOCKSUBJ_INVALID)
  72
  73 #define DGA_MBUFFER_MASK(bufIndex) \
  74     (1L<<(bufIndex))
  75
  76 /* lock subject is a window? */
  77 #define DGA_LOCKSUBJ_WINDOW(dgawin, lockSubj) \
  78     ((lockSubj) == -1)
  79
  80 /* lock subject is a multibuffer? */
  81 #define DGA_LOCKSUBJ_MBUFFER(dgawin, lockSubj) \
  82     (!DGA_LOCKSUBJ_WINDOW((dgawin), (lockSubj)) && \
  83      DGA_LOCKSUBJ_VALID((dgawin), (lockSubj)))
  84
  85 /* lock subject is a viewable multibuffer? */
  86 #define DGA_LOCKSUBJ_VMBUFFER(dgawin, lockSubj) \
  87     (DGA_LOCKSUBJ_MBUFFER((dgawin), (lockSubj)) \
  88          ? DGA_MBUF_ISVIEWABLE((dgawin)->pMbs, (lockSubj)) \
  89          : 0) \
  90
  91 /* effective lock subject is a nonviewable multibuffer? */
  92 #define DGA_LOCKSUBJ_NMBUFFER(dgawin, lockSubj) \
  93     (DGA_LOCKSUBJ_MBUFFER((dgawin), (lockSubj)) \
  94          ? !DGA_LOCKSUBJ_VMBUFFER((dgawin), (lockSubj)) \
  95          : 0) \
  96
  97 /* is lock subject viewable? (zombies are considered not viewable) */
  98 #define DGA_LOCKSUBJ_VIEWABLE(dgawin, lockSubj) \
  99      ( !((dgawin)->changeMask & DGA_CHANGE_ZOMBIE) && \
 100        ((lockSubj) != DGA_LOCKSUBJ_INVALID) && \
 101        ( (DGA_LOCKSUBJ_WINDOW((dgawin), (lockSubj))) || \
 102          (DGA_MBUF_ISVIEWABLE((dgawin)->pMbs, (lockSubj))) \
 103        ) \
 104      )
 105
 106 /* is window or mbuffer aliased? */
 107 #define DGA_MBSMEMB_ALIASED(dgawin) \
 108     ((dgawin)->eLockSubj != (dgawin)->rLockSubj)
 109
 110 #define DGA_MBUF_ISVIEWABLE(pMbs, bufIndex) \
 111     (!((pMbs)->pNbShinfo[(bufIndex)]))
 112
 113 #endif /* _DGA_INTERNALDEFS_H */