/****************************************************************************** * * Copyright (c) 1994, 1995 Hewlett-Packard Company * * Permission is hereby granted, free of charge, to any person obtaining * a copy of this software and associated documentation files (the * "Software"), to deal in the Software without restriction, including * without limitation the rights to use, copy, modify, merge, publish, * distribute, sublicense, and/or sell copies of the Software, and to * permit persons to whom the Software is furnished to do so, subject to * the following conditions: * * The above copyright notice and this permission notice shall be included * in all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. * IN NO EVENT SHALL HEWLETT-PACKARD COMPANY BE LIABLE FOR ANY CLAIM, * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR * THE USE OR OTHER DEALINGS IN THE SOFTWARE. * * Except as contained in this notice, the name of the Hewlett-Packard * Company shall not be used in advertising or otherwise to promote the * sale, use or other dealings in this Software without prior written * authorization from the Hewlett-Packard Company. * * Header file for DIX-related DBE * *****************************************************************************/ #ifndef DBE_STRUCT_H #define DBE_STRUCT_H /* INCLUDES */ #define NEED_DBE_PROTOCOL #include <X11/extensions/dbeproto.h> #include "windowstr.h" #include "privates.h" typedef struct { VisualID visual; /* one visual ID that supports double-buffering */ int depth; /* depth of visual in bits */ int perflevel; /* performance level of visual */ } XdbeVisualInfo; typedef struct { int count; /* number of items in visual_depth */ XdbeVisualInfo *visinfo; /* list of visuals & depths for scrn */ } XdbeScreenVisualInfo; /* DEFINES */ #define DBE_SCREEN_PRIV(pScreen) ((DbeScreenPrivPtr) \ dixLookupPrivate(&(pScreen)->devPrivates, dbeScreenPrivKey)) #define DBE_SCREEN_PRIV_FROM_DRAWABLE(pDrawable) \ DBE_SCREEN_PRIV((pDrawable)->pScreen) #define DBE_SCREEN_PRIV_FROM_WINDOW_PRIV(pDbeWindowPriv) \ DBE_SCREEN_PRIV((pDbeWindowPriv)->pWindow->drawable.pScreen) #define DBE_SCREEN_PRIV_FROM_WINDOW(pWindow) \ DBE_SCREEN_PRIV((pWindow)->drawable.pScreen) #define DBE_SCREEN_PRIV_FROM_PIXMAP(pPixmap) \ DBE_SCREEN_PRIV((pPixmap)->drawable.pScreen) #define DBE_SCREEN_PRIV_FROM_GC(pGC)\ DBE_SCREEN_PRIV((pGC)->pScreen) #define DBE_WINDOW_PRIV(pWin) ((DbeWindowPrivPtr) \ dixLookupPrivate(&(pWin)->devPrivates, dbeWindowPrivKey)) /* Initial size of the buffer ID array in the window priv. */ #define DBE_INIT_MAX_IDS 2 /* Reallocation increment for the buffer ID array. */ #define DBE_INCR_MAX_IDS 4 /* Marker for free elements in the buffer ID array. */ #define DBE_FREE_ID_ELEMENT 0 extern _X_EXPORT void DbeExtensionInit (void); /* TYPEDEFS */ /* Record used to pass swap information between DIX and DDX swapping * procedures. */ typedef struct _DbeSwapInfoRec { WindowPtr pWindow; unsigned char swapAction; } DbeSwapInfoRec, *DbeSwapInfoPtr; /* ****************************************************************************** ** Per-window data ****************************************************************************** */ typedef struct _DbeWindowPrivRec { /* A pointer to the window with which the DBE window private (buffer) is * associated. */ WindowPtr pWindow; /* Last known swap action for this buffer. Legal values for this field * are XdbeUndefined, XdbeBackground, XdbeUntouched, and XdbeCopied. */ unsigned char swapAction; /* Last known buffer size. */ unsigned short width, height; /* Coordinates used for static gravity when the window is positioned. */ short x, y; /* Number of XIDs associated with this buffer. */ int nBufferIDs; /* Capacity of the current buffer ID array, IDs. */ int maxAvailableIDs; /* Pointer to the array of buffer IDs. This initially points to initIDs. * When the static limit of the initIDs array is reached, the array is * reallocated and this pointer is set to the new array instead of initIDs. */ XID *IDs; /* Initial array of buffer IDs. We are defining the XID array within the * window priv to optimize for data locality. In most cases, only one * buffer will be associated with a window. Having the array declared * here can prevent us from accessing the data in another memory page, * possibly resulting in a page swap and loss of performance. Initially we * will use this array to store buffer IDs. For situations where we have * more IDs than can fit in this static array, we will allocate a larger * array to use, possibly suffering a performance loss. */ XID initIDs[DBE_INIT_MAX_IDS]; /* Device-specific private information. */ PrivateRec *devPrivates; } DbeWindowPrivRec, *DbeWindowPrivPtr; /* ****************************************************************************** ** Per-screen data ****************************************************************************** */ typedef struct _DbeScreenPrivRec { /* Resources created by DIX to be used by DDX */ RESTYPE dbeDrawableResType; RESTYPE dbeWindowPrivResType; /* Private indices created by DIX to be used by DDX */ DevPrivateKey dbeScreenPrivKey; DevPrivateKey dbeWindowPrivKey; /* Wrapped functions * It is the responsibilty of the DDX layer to wrap PositionWindow(). * DbeExtensionInit wraps DestroyWindow(). */ PositionWindowProcPtr PositionWindow; DestroyWindowProcPtr DestroyWindow; /* Per-screen DIX routines */ Bool (*SetupBackgroundPainter)( WindowPtr /*pWin*/, GCPtr /*pGC*/ ); /* Per-screen DDX routines */ Bool (*GetVisualInfo)( ScreenPtr /*pScreen*/, XdbeScreenVisualInfo * /*pVisInfo*/ ); int (*AllocBackBufferName)( WindowPtr /*pWin*/, XID /*bufId*/, int /*swapAction*/ ); int (*SwapBuffers)( ClientPtr /*client*/, int * /*pNumWindows*/, DbeSwapInfoPtr /*swapInfo*/ ); void (*BeginIdiom)( ClientPtr /*client*/ ); void (*EndIdiom)( ClientPtr /*client*/ ); void (*WinPrivDelete)( DbeWindowPrivPtr /*pDbeWindowPriv*/, XID /*bufId*/ ); void (*ResetProc)( ScreenPtr /*pScreen*/ ); /* Device-specific private information. */ PrivateRec *devPrivates; } DbeScreenPrivRec, *DbeScreenPrivPtr; #endif /* DBE_STRUCT_H */