subsystems/win32/win32k/include/gdiobj.h

   1 /*
   2  *  GDI object common header definition
   3  *
   4  */
   5
   6 #pragma once
   7
   8 /* Public GDI Object/Handle definitions */
   9 #include <win32k/ntgdihdl.h>
  10 #include "win32.h"
  11
  12 typedef struct _GDI_HANDLE_TABLE
  13 {
  14 /* The table must be located at the beginning of this structure so it can be
  15  * properly mapped!
  16  */
  17 //////////////////////////////////////////////////////////////////////////////
  18   GDI_TABLE_ENTRY Entries[GDI_HANDLE_COUNT];
  19   DEVCAPS         DevCaps;                 // Device Capabilities.
  20   FLONG           flDeviceUniq;            // Device settings uniqueness.
  21   PVOID           pvLangPack;              // Language Pack.
  22   CFONT           cfPublic[GDI_CFONT_MAX]; // Public Fonts.
  23   DWORD           dwCFCount;
  24 //////////////////////////////////////////////////////////////////////////////
  25   PPAGED_LOOKASIDE_LIST LookasideLists;
  26
  27   ULONG           FirstFree;
  28   ULONG           FirstUnused;
  29
  30 } GDI_HANDLE_TABLE, *PGDI_HANDLE_TABLE;
  31
  32 extern PGDI_HANDLE_TABLE GdiHandleTable;
  33
  34 typedef PVOID PGDIOBJ;
  35
  36 typedef BOOL (INTERNAL_CALL *GDICLEANUPPROC)(PVOID ObjectBody);
  37
  38 /* Every GDI Object must have this standard type of header.
  39  * It's for thread locking. */
  40 typedef struct _BASEOBJECT
  41 {
  42   HGDIOBJ     hHmgr;
  43   ULONG       ulShareCount;
  44   USHORT      cExclusiveLock;
  45   USHORT      BaseFlags;
  46   PTHREADINFO Tid;
  47 } BASEOBJECT, *POBJ;
  48
  49 typedef struct _CLIENTOBJ
  50 {
  51   BASEOBJECT BaseObject;
  52 } CLIENTOBJ, *PCLIENTOBJ;
  53
  54 enum BASEFLAGS
  55 {
  56     BASEFLAG_LOOKASIDE = 0x80,
  57
  58     /* ReactOS specific: */
  59     BASEFLAG_READY_TO_DIE = 0x1000
  60 };
  61
  62 BOOL    INTERNAL_CALL GDIOBJ_OwnedByCurrentProcess(HGDIOBJ ObjectHandle);
  63 BOOL    INTERNAL_CALL GDIOBJ_SetOwnership(HGDIOBJ ObjectHandle, PEPROCESS Owner);
  64 BOOL    INTERNAL_CALL GDIOBJ_CopyOwnership(HGDIOBJ CopyFrom, HGDIOBJ CopyTo);
  65 BOOL    INTERNAL_CALL GDIOBJ_ConvertToStockObj(HGDIOBJ *hObj);
  66 //VOID    INTERNAL_CALL GDIOBJ_ShareUnlockObjByPtr(POBJ Object);
  67 BOOL    INTERNAL_CALL GDIOBJ_ValidateHandle(HGDIOBJ hObj, ULONG ObjectType);
  68 POBJ    INTERNAL_CALL GDIOBJ_AllocObj(UCHAR ObjectType);
  69 POBJ    INTERNAL_CALL GDIOBJ_AllocObjWithHandle(ULONG ObjectType);
  70 VOID    INTERNAL_CALL GDIOBJ_FreeObj (POBJ pObj, UCHAR ObjectType);
  71 BOOL    INTERNAL_CALL GDIOBJ_FreeObjByHandle (HGDIOBJ hObj, DWORD ObjectType);
  72 PGDIOBJ INTERNAL_CALL GDIOBJ_LockObj (HGDIOBJ hObj, DWORD ObjectType);
  73 PGDIOBJ INTERNAL_CALL GDIOBJ_ShareLockObj (HGDIOBJ hObj, DWORD ObjectType);
  74
  75 PVOID   INTERNAL_CALL GDI_MapHandleTable(PSECTION_OBJECT SectionObject, PEPROCESS Process);
  76
  77 #define GDIOBJ_GetObjectType(Handle) \
  78   GDI_HANDLE_GET_TYPE(Handle)
  79
  80 #define GDIOBJFLAG_DEFAULT      (0x0)
  81 #define GDIOBJFLAG_IGNOREPID    (0x1)
  82 #define GDIOBJFLAG_IGNORELOCK   (0x2)
  83
  84 BOOL FASTCALL GreDeleteObject(HGDIOBJ hObject);
  85 BOOL FASTCALL IsObjectDead(HGDIOBJ);
  86 BOOL FASTCALL IntGdiSetDCOwnerEx( HDC, DWORD, BOOL);
  87 BOOL FASTCALL IntGdiSetRegionOwner(HRGN,DWORD);
  88
  89 /*!
  90  * Release GDI object. Every object locked by GDIOBJ_LockObj() must be unlocked.
  91  * You should unlock the object
  92  * as soon as you don't need to have access to it's data.
  93
  94  * \param Object        Object pointer (as returned by GDIOBJ_LockObj).
  95  */
  96 ULONG
  97 FORCEINLINE
  98 GDIOBJ_UnlockObjByPtr(POBJ Object)
  99 {
 100     INT cLocks = InterlockedDecrement((PLONG)&Object->cExclusiveLock);
 101     ASSERT(cLocks >= 0);
 102     return cLocks;
 103 }
 104
 105 ULONG
 106 FORCEINLINE
 107 GDIOBJ_ShareUnlockObjByPtr(POBJ Object)
 108 {
 109     HGDIOBJ hobj = Object->hHmgr;
 110     USHORT flags = Object->BaseFlags;
 111     INT cLocks = InterlockedDecrement((PLONG)&Object->ulShareCount);
 112     ASSERT(cLocks >= 0);
 113     if ((flags & BASEFLAG_READY_TO_DIE) && (cLocks == 0))
 114     {
 115         GDIOBJ_FreeObjByHandle(hobj, GDI_OBJECT_TYPE_DONTCARE);
 116     }
 117     return cLocks;
 118 }
 119
 120 #ifdef GDI_DEBUG
 121 ULONG FASTCALL GDIOBJ_IncrementShareCount(POBJ Object);
 122 #else
 123 ULONG
 124 FORCEINLINE
 125 GDIOBJ_IncrementShareCount(POBJ Object)
 126 {
 127     INT cLocks = InterlockedIncrement((PLONG)&Object->ulShareCount);
 128     ASSERT(cLocks >= 1);
 129     return cLocks;
 130 }
 131 #endif
 132
 133 INT FASTCALL GreGetObjectOwner(HGDIOBJ, GDIOBJTYPE);
 134
 135 #define GDIOBJ_GetKernelObj(Handle) \
 136   ((PGDI_TABLE_ENTRY)&GdiHandleTable->Entries[GDI_HANDLE_GET_INDEX(Handle)])->KernelData