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/* $XConsortium: Xdbeproto.h,v 1.1 95/05/25 17:29:33 dpw Exp dpw $ */
/******************************************************************************
*
* 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: dbestruct.h,v 55.11 95/05/18 14:12:47 yip Exp $
*
* Header file for DIX-related DBE
*
*****************************************************************************/
#ifndef DBE_STRUCT_H
#define DBE_STRUCT_H
/* INCLUDES */
#define NEED_DBE_PROTOCOL
#include "Xdbeproto.h"
#include "windowstr.h"
/* DEFINES */
#define DBE_SCREEN_PRIV(pScreen) \
((dbeScreenPrivIndex < 0) ? \
NULL : \
((DbeScreenPrivPtr)((pScreen)->devPrivates[dbeScreenPrivIndex].ptr)))
#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(pWindow)\
((dbeWindowPrivIndex < 0) ? \
NULL : \
((DbeWindowPrivPtr)(pWindow->devPrivates[dbeWindowPrivIndex].ptr)))
/* TYPEDEFS */
/*
******************************************************************************
**
** Per-window data
**
******************************************************************************
*/
typedef struct _DbeBufferIdRec
{
XID id;
struct _DbeBufferIdRec *prev;
struct _DbeBufferIdRec *next;
} DbeBufferIdRec, *DbeBufferIdPtr;
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;
/* List of XIDs associated with this buffer. We are defining the XID list
* as a record and not a pointer here to optimize for data locality. In
* most cases, only one buffer will be associated with a window. Having a
* record declared here can prevent us accessing the data in another memory
* page, possibly resulting in a page swap and loss of performance. For
* situations where there is more than one buffer, we will possibly have to
* access those XIDs on a different data page. This situation could be
* optimized by performing chunk allocations of memory specifically to be
* used for XID list nodes.
*/
DbeBufferIdRec idList;
/* Number of XIDs associated with this buffer.
*/
int nBufferIDs;
/* Pointer to a pixmap that contains the contents of the back buffer.
* This pointer is used for software buffering only.
*/
PixmapPtr pPixmapBack;
/* Pointer to a pixmap that contains the contents of the front buffer.
* This pointer is used for software buffering only. Specifically, the
* front pixmap is used for the XdbeUntouched swap action. For that swap
* action, we need to copy the front buffer (window) contents into this
* pixmap, copy the contents of current back buffer pixmap (the back
* buffer) into the window, swap the front and back pixmap pointers, and
* then swap the pixmap/resource associations in the resource database.
*/
PixmapPtr pPixmapFront;
/* Device-specific private information.
*/
DevUnion *devPrivates;
} DbeWindowPrivRec, *DbeWindowPrivPtr;
/*
******************************************************************************
**
** Per-screen data
**
******************************************************************************
*/
typedef struct _DbeScreenPrivRec
{
/* Info for creating window privs */
int winPrivPrivLen; /* Length of privs in DbeWindowPrivRec */
unsigned int *winPrivPrivSizes; /* Array of private record sizes */
unsigned int totalWinPrivSize; /* PrivRec + size of all priv priv ptrs */
/* Info for creating screen privs */
int scrnPrivPrivLen; /* Length of privs in DbeScreenPrivRec */
unsigned int *scrnPrivPrivSizes; /* Array of private record sizes */
unsigned int totalScrnPrivSize; /* PrivRec + size of all priv priv ptrs */
/* Resources created by DIX to be used by DDX */
RESTYPE dbeDrawableResType;
RESTYPE dbeWindowPrivResType;
/* Private indices created by DIX to be used by DDX */
int dbeScreenPrivIndex;
int dbeWindowPrivIndex;
/* Wrapped functions
* It is the responsibilty of the DDX layer to wrap PositionWindow().
* DbeExtensionInit wraps DestroyWindow().
*/
Bool (*PositionWindow)(); /* pWin, x, y */
Bool (*DestroyWindow)(); /* pWin */
/* Per-screen DIX routines */
Bool (*SetupBackgroundPainter)(); /* pWin, pGC */
DbeWindowPrivPtr (*AllocWinPriv)(); /* pScreen */
int (*AllocWinPrivPrivIndex)(); /* */
Bool (*AllocWinPrivPriv)(); /* pScreen, index, amount */
struct _DbeScreenPrivRec *(*AllocScrnPriv)(); /* pDbeScreenPriv */
int (*AllocScrnPrivPrivIndex)(); /* */
Bool (*AllocScrnPrivPriv)(); /* pScreen, index, amount */
/* Per-screen DDX routines */
Bool (*GetVisualInfo)(); /* pScreen, pVisInfo */
int (*AllocBackBufferName)(); /* pWin, bufId, swapAction */
int (*SwapBuffers)(); /* client, nWindows, pWins,*/
/* actions */
void (*BeginIdiom)(); /* client */
void (*EndIdiom)(); /* client */
void (*WinPrivDelete)(); /* pDbeWindowPriv, bufID */
void (*ResetProc)(); /* pScreen */
/* Device-specific private information.
*/
DevUnion *devPrivates;
} DbeScreenPrivRec, *DbeScreenPrivPtr;
/* EXTERNS */
#endif /* DBE_STRUCT_H */
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