1470 lines
45 KiB
C
1470 lines
45 KiB
C
/******************************************************************************
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*
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* Copyright (c) 1994, 1995 Hewlett-Packard Company
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*
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* Permission is hereby granted, free of charge, to any person obtaining
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* a copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sublicense, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice shall be included
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* in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
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* IN NO EVENT SHALL HEWLETT-PACKARD COMPANY BE LIABLE FOR ANY CLAIM,
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* DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
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* OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR
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* THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*
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* Except as contained in this notice, the name of the Hewlett-Packard
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* Company shall not be used in advertising or otherwise to promote the
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* sale, use or other dealings in this Software without prior written
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* authorization from the Hewlett-Packard Company.
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*
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* DIX DBE code
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*
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*****************************************************************************/
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/* INCLUDES */
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#ifdef HAVE_DIX_CONFIG_H
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#include <dix-config.h>
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#endif
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#include <string.h>
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#include <stdint.h>
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#include <X11/X.h>
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#include <X11/Xproto.h>
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#include "scrnintstr.h"
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#include "extnsionst.h"
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#include "extinit.h"
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#include "gcstruct.h"
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#include "dixstruct.h"
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#define NEED_DBE_PROTOCOL
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#include "dbestruct.h"
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#include "midbe.h"
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#include "xace.h"
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/* GLOBALS */
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/* These are globals for use by DDX */
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DevPrivateKeyRec dbeScreenPrivKeyRec;
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DevPrivateKeyRec dbeWindowPrivKeyRec;
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/* These are globals for use by DDX */
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RESTYPE dbeDrawableResType;
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RESTYPE dbeWindowPrivResType;
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/* Used to generate DBE's BadBuffer error. */
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static int dbeErrorBase;
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/******************************************************************************
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*
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* DBE DIX Procedure: DbeStubScreen
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*
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* Description:
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*
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* This is function stubs the function pointers in the given DBE screen
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* private and increments the number of stubbed screens.
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*
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*****************************************************************************/
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static void
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DbeStubScreen(DbeScreenPrivPtr pDbeScreenPriv, int *nStubbedScreens)
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{
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/* Stub DIX. */
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pDbeScreenPriv->SetupBackgroundPainter = NULL;
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/* Do not unwrap PositionWindow nor DestroyWindow. If the DDX
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* initialization function failed, we assume that it did not wrap
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* PositionWindow. Also, DestroyWindow is only wrapped if the DDX
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* initialization function succeeded.
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*/
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/* Stub DDX. */
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pDbeScreenPriv->GetVisualInfo = NULL;
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pDbeScreenPriv->AllocBackBufferName = NULL;
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pDbeScreenPriv->SwapBuffers = NULL;
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pDbeScreenPriv->WinPrivDelete = NULL;
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(*nStubbedScreens)++;
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} /* DbeStubScreen() */
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/******************************************************************************
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*
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* DBE DIX Procedure: ProcDbeGetVersion
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*
|
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* Description:
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*
|
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* This function is for processing a DbeGetVersion request.
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* This request returns the major and minor version numbers of this
|
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* extension.
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*
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* Return Values:
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*
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* Success
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*
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*****************************************************************************/
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static int
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ProcDbeGetVersion(ClientPtr client)
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{
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/* REQUEST(xDbeGetVersionReq); */
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xDbeGetVersionReply rep = {
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.type = X_Reply,
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.sequenceNumber = client->sequence,
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.length = 0,
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.majorVersion = DBE_MAJOR_VERSION,
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.minorVersion = DBE_MINOR_VERSION
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};
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REQUEST_SIZE_MATCH(xDbeGetVersionReq);
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if (client->swapped) {
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swaps(&rep.sequenceNumber);
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}
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WriteToClient(client, sizeof(xDbeGetVersionReply), &rep);
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return Success;
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} /* ProcDbeGetVersion() */
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/******************************************************************************
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*
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* DBE DIX Procedure: ProcDbeAllocateBackBufferName
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*
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* Description:
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*
|
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* This function is for processing a DbeAllocateBackBufferName request.
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* This request allocates a drawable ID used to refer to the back buffer
|
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* of a window.
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*
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* Return Values:
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||
*
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* BadAlloc - server can not allocate resources
|
||
* BadIDChoice - id is out of range for client; id is already in use
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||
* BadMatch - window is not an InputOutput window;
|
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* visual of window is not on list returned by
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* DBEGetVisualInfo;
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* BadValue - invalid swap action is specified
|
||
* BadWindow - window is not a valid window
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* Success
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||
*
|
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*****************************************************************************/
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||
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static int
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ProcDbeAllocateBackBufferName(ClientPtr client)
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{
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REQUEST(xDbeAllocateBackBufferNameReq);
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WindowPtr pWin;
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DbeScreenPrivPtr pDbeScreenPriv;
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DbeWindowPrivPtr pDbeWindowPriv;
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XdbeScreenVisualInfo scrVisInfo;
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register int i;
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Bool visualMatched = FALSE;
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xDbeSwapAction swapAction;
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VisualID visual;
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int status;
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int add_index;
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REQUEST_SIZE_MATCH(xDbeAllocateBackBufferNameReq);
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/* The window must be valid. */
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status = dixLookupWindow(&pWin, stuff->window, client, DixManageAccess);
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if (status != Success)
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return status;
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/* The window must be InputOutput. */
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if (pWin->drawable.class != InputOutput) {
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return BadMatch;
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}
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/* The swap action must be valid. */
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swapAction = stuff->swapAction; /* use local var for performance. */
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if ((swapAction != XdbeUndefined) &&
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(swapAction != XdbeBackground) &&
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(swapAction != XdbeUntouched) && (swapAction != XdbeCopied)) {
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return BadValue;
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}
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/* The id must be in range and not already in use. */
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LEGAL_NEW_RESOURCE(stuff->buffer, client);
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/* The visual of the window must be in the list returned by
|
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* GetVisualInfo.
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*/
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pDbeScreenPriv = DBE_SCREEN_PRIV_FROM_WINDOW(pWin);
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if (!pDbeScreenPriv->GetVisualInfo)
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return BadMatch; /* screen doesn't support double buffering */
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if (!(*pDbeScreenPriv->GetVisualInfo) (pWin->drawable.pScreen, &scrVisInfo)) {
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/* GetVisualInfo() failed to allocate visual info data. */
|
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return BadAlloc;
|
||
}
|
||
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/* See if the window's visual is on the list. */
|
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visual = wVisual(pWin);
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for (i = 0; (i < scrVisInfo.count) && !visualMatched; i++) {
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if (scrVisInfo.visinfo[i].visual == visual) {
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visualMatched = TRUE;
|
||
}
|
||
}
|
||
|
||
/* Free what was allocated by the GetVisualInfo() call above. */
|
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free(scrVisInfo.visinfo);
|
||
|
||
if (!visualMatched) {
|
||
return BadMatch;
|
||
}
|
||
|
||
if ((pDbeWindowPriv = DBE_WINDOW_PRIV(pWin)) == NULL) {
|
||
/* There is no buffer associated with the window.
|
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* Allocate a window priv.
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||
*/
|
||
|
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pDbeWindowPriv = calloc(1, sizeof(DbeWindowPrivRec));
|
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if (!pDbeWindowPriv)
|
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return BadAlloc;
|
||
|
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/* Fill out window priv information. */
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pDbeWindowPriv->pWindow = pWin;
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pDbeWindowPriv->width = pWin->drawable.width;
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pDbeWindowPriv->height = pWin->drawable.height;
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pDbeWindowPriv->x = pWin->drawable.x;
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pDbeWindowPriv->y = pWin->drawable.y;
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pDbeWindowPriv->nBufferIDs = 0;
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||
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/* Set the buffer ID array pointer to the initial (static) array). */
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pDbeWindowPriv->IDs = pDbeWindowPriv->initIDs;
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/* Initialize the buffer ID list. */
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pDbeWindowPriv->maxAvailableIDs = DBE_INIT_MAX_IDS;
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pDbeWindowPriv->IDs[0] = stuff->buffer;
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add_index = 0;
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for (i = 0; i < DBE_INIT_MAX_IDS; i++) {
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pDbeWindowPriv->IDs[i] = DBE_FREE_ID_ELEMENT;
|
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}
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||
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/* Actually connect the window priv to the window. */
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dixSetPrivate(&pWin->devPrivates, dbeWindowPrivKey, pDbeWindowPriv);
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} /* if -- There is no buffer associated with the window. */
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else {
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/* A buffer is already associated with the window.
|
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* Add the new buffer ID to the array, reallocating the array memory
|
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* if necessary.
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*/
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/* Determine if there is a free element in the ID array. */
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for (i = 0; i < pDbeWindowPriv->maxAvailableIDs; i++) {
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if (pDbeWindowPriv->IDs[i] == DBE_FREE_ID_ELEMENT) {
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/* There is still room in the ID array. */
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break;
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}
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}
|
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if (i == pDbeWindowPriv->maxAvailableIDs) {
|
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/* No more room in the ID array -- reallocate another array. */
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XID *pIDs;
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/* Setup an array pointer for the realloc operation below. */
|
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if (pDbeWindowPriv->maxAvailableIDs == DBE_INIT_MAX_IDS) {
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/* We will malloc a new array. */
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pIDs = NULL;
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}
|
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else {
|
||
/* We will realloc a new array. */
|
||
pIDs = pDbeWindowPriv->IDs;
|
||
}
|
||
|
||
/* malloc/realloc a new array and initialize all elements to 0. */
|
||
pDbeWindowPriv->IDs =
|
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reallocarray(pIDs,
|
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pDbeWindowPriv->maxAvailableIDs + DBE_INCR_MAX_IDS,
|
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sizeof(XID));
|
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if (!pDbeWindowPriv->IDs) {
|
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return BadAlloc;
|
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}
|
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memset(&pDbeWindowPriv->IDs[pDbeWindowPriv->nBufferIDs], 0,
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(pDbeWindowPriv->maxAvailableIDs + DBE_INCR_MAX_IDS -
|
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pDbeWindowPriv->nBufferIDs) * sizeof(XID));
|
||
|
||
if (pDbeWindowPriv->maxAvailableIDs == DBE_INIT_MAX_IDS) {
|
||
/* We just went from using the initial (static) array to a
|
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* newly allocated array. Copy the IDs from the initial array
|
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* to the new array.
|
||
*/
|
||
memcpy(pDbeWindowPriv->IDs, pDbeWindowPriv->initIDs,
|
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DBE_INIT_MAX_IDS * sizeof(XID));
|
||
}
|
||
|
||
pDbeWindowPriv->maxAvailableIDs += DBE_INCR_MAX_IDS;
|
||
}
|
||
|
||
add_index = i;
|
||
|
||
} /* else -- A buffer is already associated with the window. */
|
||
|
||
/* Call the DDX routine to allocate the back buffer. */
|
||
status = (*pDbeScreenPriv->AllocBackBufferName) (pWin, stuff->buffer,
|
||
stuff->swapAction);
|
||
|
||
if (status == Success) {
|
||
pDbeWindowPriv->IDs[add_index] = stuff->buffer;
|
||
if (!AddResource(stuff->buffer, dbeWindowPrivResType,
|
||
(void *) pDbeWindowPriv)) {
|
||
pDbeWindowPriv->IDs[add_index] = DBE_FREE_ID_ELEMENT;
|
||
|
||
if (pDbeWindowPriv->nBufferIDs == 0) {
|
||
status = BadAlloc;
|
||
goto out_free;
|
||
}
|
||
}
|
||
}
|
||
else {
|
||
/* The DDX buffer allocation routine failed for the first buffer of
|
||
* this window.
|
||
*/
|
||
if (pDbeWindowPriv->nBufferIDs == 0) {
|
||
goto out_free;
|
||
}
|
||
}
|
||
|
||
/* Increment the number of buffers (XIDs) associated with this window. */
|
||
pDbeWindowPriv->nBufferIDs++;
|
||
|
||
/* Set swap action on all calls. */
|
||
pDbeWindowPriv->swapAction = stuff->swapAction;
|
||
|
||
return status;
|
||
|
||
out_free:
|
||
dixSetPrivate(&pWin->devPrivates, dbeWindowPrivKey, NULL);
|
||
free(pDbeWindowPriv);
|
||
return status;
|
||
|
||
} /* ProcDbeAllocateBackBufferName() */
|
||
|
||
/******************************************************************************
|
||
*
|
||
* DBE DIX Procedure: ProcDbeDeallocateBackBufferName
|
||
*
|
||
* Description:
|
||
*
|
||
* This function is for processing a DbeDeallocateBackBufferName request.
|
||
* This request frees a drawable ID that was obtained by a
|
||
* DbeAllocateBackBufferName request.
|
||
*
|
||
* Return Values:
|
||
*
|
||
* BadBuffer - buffer to deallocate is not associated with a window
|
||
* Success
|
||
*
|
||
*****************************************************************************/
|
||
|
||
static int
|
||
ProcDbeDeallocateBackBufferName(ClientPtr client)
|
||
{
|
||
REQUEST(xDbeDeallocateBackBufferNameReq);
|
||
DbeWindowPrivPtr pDbeWindowPriv;
|
||
int rc, i;
|
||
void *val;
|
||
|
||
REQUEST_SIZE_MATCH(xDbeDeallocateBackBufferNameReq);
|
||
|
||
/* Buffer name must be valid */
|
||
rc = dixLookupResourceByType((void **) &pDbeWindowPriv, stuff->buffer,
|
||
dbeWindowPrivResType, client,
|
||
DixDestroyAccess);
|
||
if (rc != Success)
|
||
return rc;
|
||
|
||
rc = dixLookupResourceByType(&val, stuff->buffer, dbeDrawableResType,
|
||
client, DixDestroyAccess);
|
||
if (rc != Success)
|
||
return rc;
|
||
|
||
/* Make sure that the id is valid for the window.
|
||
* This is paranoid code since we already looked up the ID by type
|
||
* above.
|
||
*/
|
||
|
||
for (i = 0; i < pDbeWindowPriv->nBufferIDs; i++) {
|
||
/* Loop through the ID list to find the ID. */
|
||
if (pDbeWindowPriv->IDs[i] == stuff->buffer) {
|
||
break;
|
||
}
|
||
}
|
||
|
||
if (i == pDbeWindowPriv->nBufferIDs) {
|
||
/* We did not find the ID in the ID list. */
|
||
client->errorValue = stuff->buffer;
|
||
return dbeErrorBase + DbeBadBuffer;
|
||
}
|
||
|
||
FreeResource(stuff->buffer, RT_NONE);
|
||
|
||
return Success;
|
||
|
||
} /* ProcDbeDeallocateBackBufferName() */
|
||
|
||
/******************************************************************************
|
||
*
|
||
* DBE DIX Procedure: ProcDbeSwapBuffers
|
||
*
|
||
* Description:
|
||
*
|
||
* This function is for processing a DbeSwapBuffers request.
|
||
* This request swaps the buffers for all windows listed, applying the
|
||
* appropriate swap action for each window.
|
||
*
|
||
* Return Values:
|
||
*
|
||
* BadAlloc - local allocation failed; this return value is not defined
|
||
* by the protocol
|
||
* BadMatch - a window in request is not double-buffered; a window in
|
||
* request is listed more than once
|
||
* BadValue - invalid swap action is specified; no swap action is
|
||
* specified
|
||
* BadWindow - a window in request is not valid
|
||
* Success
|
||
*
|
||
*****************************************************************************/
|
||
|
||
static int
|
||
ProcDbeSwapBuffers(ClientPtr client)
|
||
{
|
||
REQUEST(xDbeSwapBuffersReq);
|
||
WindowPtr pWin;
|
||
DbeScreenPrivPtr pDbeScreenPriv;
|
||
DbeSwapInfoPtr swapInfo;
|
||
xDbeSwapInfo *dbeSwapInfo;
|
||
int error;
|
||
unsigned int i, j;
|
||
unsigned int nStuff;
|
||
int nStuff_i; /* DDX API requires int for nStuff */
|
||
|
||
REQUEST_AT_LEAST_SIZE(xDbeSwapBuffersReq);
|
||
nStuff = stuff->n; /* use local variable for performance. */
|
||
|
||
if (nStuff == 0) {
|
||
REQUEST_SIZE_MATCH(xDbeSwapBuffersReq);
|
||
return Success;
|
||
}
|
||
|
||
if (nStuff > UINT32_MAX / sizeof(DbeSwapInfoRec))
|
||
return BadAlloc;
|
||
REQUEST_FIXED_SIZE(xDbeSwapBuffersReq, nStuff * sizeof(xDbeSwapInfo));
|
||
|
||
/* Get to the swap info appended to the end of the request. */
|
||
dbeSwapInfo = (xDbeSwapInfo *) &stuff[1];
|
||
|
||
/* Allocate array to record swap information. */
|
||
swapInfo = xallocarray(nStuff, sizeof(DbeSwapInfoRec));
|
||
if (swapInfo == NULL) {
|
||
return BadAlloc;
|
||
}
|
||
|
||
for (i = 0; i < nStuff; i++) {
|
||
/* Check all windows to swap. */
|
||
|
||
/* Each window must be a valid window - BadWindow. */
|
||
error = dixLookupWindow(&pWin, dbeSwapInfo[i].window, client,
|
||
DixWriteAccess);
|
||
if (error != Success) {
|
||
free(swapInfo);
|
||
return error;
|
||
}
|
||
|
||
/* Each window must be double-buffered - BadMatch. */
|
||
if (DBE_WINDOW_PRIV(pWin) == NULL) {
|
||
free(swapInfo);
|
||
return BadMatch;
|
||
}
|
||
|
||
/* Each window must only be specified once - BadMatch. */
|
||
for (j = i + 1; j < nStuff; j++) {
|
||
if (dbeSwapInfo[i].window == dbeSwapInfo[j].window) {
|
||
free(swapInfo);
|
||
return BadMatch;
|
||
}
|
||
}
|
||
|
||
/* Each swap action must be valid - BadValue. */
|
||
if ((dbeSwapInfo[i].swapAction != XdbeUndefined) &&
|
||
(dbeSwapInfo[i].swapAction != XdbeBackground) &&
|
||
(dbeSwapInfo[i].swapAction != XdbeUntouched) &&
|
||
(dbeSwapInfo[i].swapAction != XdbeCopied)) {
|
||
free(swapInfo);
|
||
return BadValue;
|
||
}
|
||
|
||
/* Everything checks out OK. Fill in the swap info array. */
|
||
swapInfo[i].pWindow = pWin;
|
||
swapInfo[i].swapAction = dbeSwapInfo[i].swapAction;
|
||
|
||
} /* for (i = 0; i < nStuff; i++) */
|
||
|
||
/* Call the DDX routine to perform the swap(s). The DDX routine should
|
||
* scan the swap list (swap info), swap any buffers that it knows how to
|
||
* handle, delete them from the list, and update nStuff to indicate how
|
||
* many windows it did not handle.
|
||
*
|
||
* This scheme allows a range of sophistication in the DDX SwapBuffers()
|
||
* implementation. Naive implementations could just swap the first buffer
|
||
* in the list, move the last buffer to the front, decrement nStuff, and
|
||
* return. The next level of sophistication could be to scan the whole
|
||
* list for windows on the same screen. Up another level, the DDX routine
|
||
* could deal with cross-screen synchronization.
|
||
*/
|
||
|
||
nStuff_i = nStuff;
|
||
while (nStuff_i > 0) {
|
||
pDbeScreenPriv = DBE_SCREEN_PRIV_FROM_WINDOW(swapInfo[0].pWindow);
|
||
error = (*pDbeScreenPriv->SwapBuffers) (client, &nStuff_i, swapInfo);
|
||
if (error != Success) {
|
||
free(swapInfo);
|
||
return error;
|
||
}
|
||
}
|
||
|
||
free(swapInfo);
|
||
return Success;
|
||
|
||
} /* ProcDbeSwapBuffers() */
|
||
|
||
/******************************************************************************
|
||
*
|
||
* DBE DIX Procedure: ProcDbeGetVisualInfo
|
||
*
|
||
* Description:
|
||
*
|
||
* This function is for processing a ProcDbeGetVisualInfo request.
|
||
* This request returns information about which visuals support
|
||
* double buffering.
|
||
*
|
||
* Return Values:
|
||
*
|
||
* BadDrawable - value in screen specifiers is not a valid drawable
|
||
* Success
|
||
*
|
||
*****************************************************************************/
|
||
|
||
static int
|
||
ProcDbeGetVisualInfo(ClientPtr client)
|
||
{
|
||
REQUEST(xDbeGetVisualInfoReq);
|
||
DbeScreenPrivPtr pDbeScreenPriv;
|
||
xDbeGetVisualInfoReply rep;
|
||
Drawable *drawables;
|
||
DrawablePtr *pDrawables = NULL;
|
||
register int i, j, rc;
|
||
register int count; /* number of visual infos in reply */
|
||
register int length; /* length of reply */
|
||
ScreenPtr pScreen;
|
||
XdbeScreenVisualInfo *pScrVisInfo;
|
||
|
||
REQUEST_AT_LEAST_SIZE(xDbeGetVisualInfoReq);
|
||
|
||
if (stuff->n > UINT32_MAX / sizeof(DrawablePtr))
|
||
return BadAlloc;
|
||
/* Make sure any specified drawables are valid. */
|
||
if (stuff->n != 0) {
|
||
if (!(pDrawables = xallocarray(stuff->n, sizeof(DrawablePtr)))) {
|
||
return BadAlloc;
|
||
}
|
||
|
||
drawables = (Drawable *) &stuff[1];
|
||
|
||
for (i = 0; i < stuff->n; i++) {
|
||
rc = dixLookupDrawable(pDrawables + i, drawables[i], client, 0,
|
||
DixGetAttrAccess);
|
||
if (rc != Success) {
|
||
free(pDrawables);
|
||
return rc;
|
||
}
|
||
}
|
||
}
|
||
|
||
count = (stuff->n == 0) ? screenInfo.numScreens : stuff->n;
|
||
if (!(pScrVisInfo = calloc(count, sizeof(XdbeScreenVisualInfo)))) {
|
||
free(pDrawables);
|
||
|
||
return BadAlloc;
|
||
}
|
||
|
||
length = 0;
|
||
|
||
for (i = 0; i < count; i++) {
|
||
pScreen = (stuff->n == 0) ? screenInfo.screens[i] :
|
||
pDrawables[i]->pScreen;
|
||
pDbeScreenPriv = DBE_SCREEN_PRIV(pScreen);
|
||
|
||
rc = XaceHook(XACE_SCREEN_ACCESS, client, pScreen, DixGetAttrAccess);
|
||
if (rc != Success)
|
||
goto freeScrVisInfo;
|
||
|
||
if (!(*pDbeScreenPriv->GetVisualInfo) (pScreen, &pScrVisInfo[i])) {
|
||
/* We failed to alloc pScrVisInfo[i].visinfo. */
|
||
rc = BadAlloc;
|
||
|
||
/* Free visinfos that we allocated for previous screen infos. */
|
||
goto freeScrVisInfo;
|
||
}
|
||
|
||
/* Account for n, number of xDbeVisInfo items in list. */
|
||
length += sizeof(CARD32);
|
||
|
||
/* Account for n xDbeVisInfo items */
|
||
length += pScrVisInfo[i].count * sizeof(xDbeVisInfo);
|
||
}
|
||
|
||
rep = (xDbeGetVisualInfoReply) {
|
||
.type = X_Reply,
|
||
.sequenceNumber = client->sequence,
|
||
.length = bytes_to_int32(length),
|
||
.m = count
|
||
};
|
||
|
||
if (client->swapped) {
|
||
swaps(&rep.sequenceNumber);
|
||
swapl(&rep.length);
|
||
swapl(&rep.m);
|
||
}
|
||
|
||
/* Send off reply. */
|
||
WriteToClient(client, sizeof(xDbeGetVisualInfoReply), &rep);
|
||
|
||
for (i = 0; i < count; i++) {
|
||
CARD32 data32;
|
||
|
||
/* For each screen in the reply, send off the visual info */
|
||
|
||
/* Send off number of visuals. */
|
||
data32 = (CARD32) pScrVisInfo[i].count;
|
||
|
||
if (client->swapped) {
|
||
swapl(&data32);
|
||
}
|
||
|
||
WriteToClient(client, sizeof(CARD32), &data32);
|
||
|
||
/* Now send off visual info items. */
|
||
for (j = 0; j < pScrVisInfo[i].count; j++) {
|
||
xDbeVisInfo visInfo;
|
||
|
||
/* Copy the data in the client data structure to a protocol
|
||
* data structure. We will send data to the client from the
|
||
* protocol data structure.
|
||
*/
|
||
|
||
visInfo.visualID = (CARD32) pScrVisInfo[i].visinfo[j].visual;
|
||
visInfo.depth = (CARD8) pScrVisInfo[i].visinfo[j].depth;
|
||
visInfo.perfLevel = (CARD8) pScrVisInfo[i].visinfo[j].perflevel;
|
||
|
||
if (client->swapped) {
|
||
swapl(&visInfo.visualID);
|
||
|
||
/* We do not need to swap depth and perfLevel since they are
|
||
* already 1 byte quantities.
|
||
*/
|
||
}
|
||
|
||
/* Write visualID(32), depth(8), perfLevel(8), and pad(16). */
|
||
WriteToClient(client, 2 * sizeof(CARD32), &visInfo.visualID);
|
||
}
|
||
}
|
||
|
||
rc = Success;
|
||
|
||
freeScrVisInfo:
|
||
/* Clean up memory. */
|
||
for (i = 0; i < count; i++) {
|
||
free(pScrVisInfo[i].visinfo);
|
||
}
|
||
free(pScrVisInfo);
|
||
|
||
free(pDrawables);
|
||
|
||
return rc;
|
||
|
||
} /* ProcDbeGetVisualInfo() */
|
||
|
||
/******************************************************************************
|
||
*
|
||
* DBE DIX Procedure: ProcDbeGetbackBufferAttributes
|
||
*
|
||
* Description:
|
||
*
|
||
* This function is for processing a ProcDbeGetbackBufferAttributes
|
||
* request. This request returns information about a back buffer.
|
||
*
|
||
* Return Values:
|
||
*
|
||
* Success
|
||
*
|
||
*****************************************************************************/
|
||
|
||
static int
|
||
ProcDbeGetBackBufferAttributes(ClientPtr client)
|
||
{
|
||
REQUEST(xDbeGetBackBufferAttributesReq);
|
||
xDbeGetBackBufferAttributesReply rep = {
|
||
.type = X_Reply,
|
||
.sequenceNumber = client->sequence,
|
||
.length = 0
|
||
};
|
||
DbeWindowPrivPtr pDbeWindowPriv;
|
||
int rc;
|
||
|
||
REQUEST_SIZE_MATCH(xDbeGetBackBufferAttributesReq);
|
||
|
||
rc = dixLookupResourceByType((void **) &pDbeWindowPriv, stuff->buffer,
|
||
dbeWindowPrivResType, client,
|
||
DixGetAttrAccess);
|
||
if (rc == Success) {
|
||
rep.attributes = pDbeWindowPriv->pWindow->drawable.id;
|
||
}
|
||
else {
|
||
rep.attributes = None;
|
||
}
|
||
|
||
if (client->swapped) {
|
||
swaps(&rep.sequenceNumber);
|
||
swapl(&rep.length);
|
||
swapl(&rep.attributes);
|
||
}
|
||
|
||
WriteToClient(client, sizeof(xDbeGetBackBufferAttributesReply), &rep);
|
||
return Success;
|
||
|
||
} /* ProcDbeGetbackBufferAttributes() */
|
||
|
||
/******************************************************************************
|
||
*
|
||
* DBE DIX Procedure: ProcDbeDispatch
|
||
*
|
||
* Description:
|
||
*
|
||
* This function dispatches DBE requests.
|
||
*
|
||
*****************************************************************************/
|
||
|
||
static int
|
||
ProcDbeDispatch(ClientPtr client)
|
||
{
|
||
REQUEST(xReq);
|
||
|
||
switch (stuff->data) {
|
||
case X_DbeGetVersion:
|
||
return (ProcDbeGetVersion(client));
|
||
|
||
case X_DbeAllocateBackBufferName:
|
||
return (ProcDbeAllocateBackBufferName(client));
|
||
|
||
case X_DbeDeallocateBackBufferName:
|
||
return (ProcDbeDeallocateBackBufferName(client));
|
||
|
||
case X_DbeSwapBuffers:
|
||
return (ProcDbeSwapBuffers(client));
|
||
|
||
case X_DbeBeginIdiom:
|
||
return Success;
|
||
|
||
case X_DbeEndIdiom:
|
||
return Success;
|
||
|
||
case X_DbeGetVisualInfo:
|
||
return (ProcDbeGetVisualInfo(client));
|
||
|
||
case X_DbeGetBackBufferAttributes:
|
||
return (ProcDbeGetBackBufferAttributes(client));
|
||
|
||
default:
|
||
return BadRequest;
|
||
}
|
||
|
||
} /* ProcDbeDispatch() */
|
||
|
||
/******************************************************************************
|
||
*
|
||
* DBE DIX Procedure: SProcDbeGetVersion
|
||
*
|
||
* Description:
|
||
*
|
||
* This function is for processing a DbeGetVersion request on a swapped
|
||
* server. This request returns the major and minor version numbers of
|
||
* this extension.
|
||
*
|
||
* Return Values:
|
||
*
|
||
* Success
|
||
*
|
||
*****************************************************************************/
|
||
|
||
static int _X_COLD
|
||
SProcDbeGetVersion(ClientPtr client)
|
||
{
|
||
REQUEST(xDbeGetVersionReq);
|
||
|
||
swaps(&stuff->length);
|
||
return (ProcDbeGetVersion(client));
|
||
|
||
} /* SProcDbeGetVersion() */
|
||
|
||
/******************************************************************************
|
||
*
|
||
* DBE DIX Procedure: SProcDbeAllocateBackBufferName
|
||
*
|
||
* Description:
|
||
*
|
||
* This function is for processing a DbeAllocateBackBufferName request on
|
||
* a swapped server. This request allocates a drawable ID used to refer
|
||
* to the back buffer of a window.
|
||
*
|
||
* Return Values:
|
||
*
|
||
* BadAlloc - server can not allocate resources
|
||
* BadIDChoice - id is out of range for client; id is already in use
|
||
* BadMatch - window is not an InputOutput window;
|
||
* visual of window is not on list returned by
|
||
* DBEGetVisualInfo;
|
||
* BadValue - invalid swap action is specified
|
||
* BadWindow - window is not a valid window
|
||
* Success
|
||
*
|
||
*****************************************************************************/
|
||
|
||
static int _X_COLD
|
||
SProcDbeAllocateBackBufferName(ClientPtr client)
|
||
{
|
||
REQUEST(xDbeAllocateBackBufferNameReq);
|
||
|
||
swaps(&stuff->length);
|
||
REQUEST_SIZE_MATCH(xDbeAllocateBackBufferNameReq);
|
||
|
||
swapl(&stuff->window);
|
||
swapl(&stuff->buffer);
|
||
/* stuff->swapAction is a byte. We do not need to swap this field. */
|
||
|
||
return (ProcDbeAllocateBackBufferName(client));
|
||
|
||
} /* SProcDbeAllocateBackBufferName() */
|
||
|
||
/******************************************************************************
|
||
*
|
||
* DBE DIX Procedure: SProcDbeDeallocateBackBufferName
|
||
*
|
||
* Description:
|
||
*
|
||
* This function is for processing a DbeDeallocateBackBufferName request
|
||
* on a swapped server. This request frees a drawable ID that was
|
||
* obtained by a DbeAllocateBackBufferName request.
|
||
*
|
||
* Return Values:
|
||
*
|
||
* BadBuffer - buffer to deallocate is not associated with a window
|
||
* Success
|
||
*
|
||
*****************************************************************************/
|
||
|
||
static int _X_COLD
|
||
SProcDbeDeallocateBackBufferName(ClientPtr client)
|
||
{
|
||
REQUEST(xDbeDeallocateBackBufferNameReq);
|
||
|
||
swaps(&stuff->length);
|
||
REQUEST_SIZE_MATCH(xDbeDeallocateBackBufferNameReq);
|
||
|
||
swapl(&stuff->buffer);
|
||
|
||
return (ProcDbeDeallocateBackBufferName(client));
|
||
|
||
} /* SProcDbeDeallocateBackBufferName() */
|
||
|
||
/******************************************************************************
|
||
*
|
||
* DBE DIX Procedure: SProcDbeSwapBuffers
|
||
*
|
||
* Description:
|
||
*
|
||
* This function is for processing a DbeSwapBuffers request on a swapped
|
||
* server. This request swaps the buffers for all windows listed,
|
||
* applying the appropriate swap action for each window.
|
||
*
|
||
* Return Values:
|
||
*
|
||
* BadMatch - a window in request is not double-buffered; a window in
|
||
* request is listed more than once; all windows in request do
|
||
* not have the same root
|
||
* BadValue - invalid swap action is specified
|
||
* BadWindow - a window in request is not valid
|
||
* Success
|
||
*
|
||
*****************************************************************************/
|
||
|
||
static int _X_COLD
|
||
SProcDbeSwapBuffers(ClientPtr client)
|
||
{
|
||
REQUEST(xDbeSwapBuffersReq);
|
||
unsigned int i;
|
||
xDbeSwapInfo *pSwapInfo;
|
||
|
||
swaps(&stuff->length);
|
||
REQUEST_AT_LEAST_SIZE(xDbeSwapBuffersReq);
|
||
|
||
swapl(&stuff->n);
|
||
if (stuff->n > UINT32_MAX / sizeof(DbeSwapInfoRec))
|
||
return BadAlloc;
|
||
REQUEST_FIXED_SIZE(xDbeSwapBuffersReq, stuff->n * sizeof(xDbeSwapInfo));
|
||
|
||
if (stuff->n != 0) {
|
||
pSwapInfo = (xDbeSwapInfo *) stuff + 1;
|
||
|
||
/* The swap info following the fix part of this request is a window(32)
|
||
* followed by a 1 byte swap action and then 3 pad bytes. We only need
|
||
* to swap the window information.
|
||
*/
|
||
for (i = 0; i < stuff->n; i++) {
|
||
swapl(&pSwapInfo->window);
|
||
}
|
||
}
|
||
|
||
return (ProcDbeSwapBuffers(client));
|
||
|
||
} /* SProcDbeSwapBuffers() */
|
||
|
||
/******************************************************************************
|
||
*
|
||
* DBE DIX Procedure: SProcDbeGetVisualInfo
|
||
*
|
||
* Description:
|
||
*
|
||
* This function is for processing a ProcDbeGetVisualInfo request on a
|
||
* swapped server. This request returns information about which visuals
|
||
* support double buffering.
|
||
*
|
||
* Return Values:
|
||
*
|
||
* BadDrawable - value in screen specifiers is not a valid drawable
|
||
* Success
|
||
*
|
||
*****************************************************************************/
|
||
|
||
static int _X_COLD
|
||
SProcDbeGetVisualInfo(ClientPtr client)
|
||
{
|
||
REQUEST(xDbeGetVisualInfoReq);
|
||
|
||
swaps(&stuff->length);
|
||
REQUEST_AT_LEAST_SIZE(xDbeGetVisualInfoReq);
|
||
|
||
swapl(&stuff->n);
|
||
SwapRestL(stuff);
|
||
|
||
return (ProcDbeGetVisualInfo(client));
|
||
|
||
} /* SProcDbeGetVisualInfo() */
|
||
|
||
/******************************************************************************
|
||
*
|
||
* DBE DIX Procedure: SProcDbeGetbackBufferAttributes
|
||
*
|
||
* Description:
|
||
*
|
||
* This function is for processing a ProcDbeGetbackBufferAttributes
|
||
* request on a swapped server. This request returns information about a
|
||
* back buffer.
|
||
*
|
||
* Return Values:
|
||
*
|
||
* Success
|
||
*
|
||
*****************************************************************************/
|
||
|
||
static int _X_COLD
|
||
SProcDbeGetBackBufferAttributes(ClientPtr client)
|
||
{
|
||
REQUEST(xDbeGetBackBufferAttributesReq);
|
||
|
||
swaps(&stuff->length);
|
||
REQUEST_SIZE_MATCH(xDbeGetBackBufferAttributesReq);
|
||
|
||
swapl(&stuff->buffer);
|
||
|
||
return (ProcDbeGetBackBufferAttributes(client));
|
||
|
||
} /* SProcDbeGetBackBufferAttributes() */
|
||
|
||
/******************************************************************************
|
||
*
|
||
* DBE DIX Procedure: SProcDbeDispatch
|
||
*
|
||
* Description:
|
||
*
|
||
* This function dispatches DBE requests on a swapped server.
|
||
*
|
||
*****************************************************************************/
|
||
|
||
static int _X_COLD
|
||
SProcDbeDispatch(ClientPtr client)
|
||
{
|
||
REQUEST(xReq);
|
||
|
||
switch (stuff->data) {
|
||
case X_DbeGetVersion:
|
||
return (SProcDbeGetVersion(client));
|
||
|
||
case X_DbeAllocateBackBufferName:
|
||
return (SProcDbeAllocateBackBufferName(client));
|
||
|
||
case X_DbeDeallocateBackBufferName:
|
||
return (SProcDbeDeallocateBackBufferName(client));
|
||
|
||
case X_DbeSwapBuffers:
|
||
return (SProcDbeSwapBuffers(client));
|
||
|
||
case X_DbeBeginIdiom:
|
||
return Success;
|
||
|
||
case X_DbeEndIdiom:
|
||
return Success;
|
||
|
||
case X_DbeGetVisualInfo:
|
||
return (SProcDbeGetVisualInfo(client));
|
||
|
||
case X_DbeGetBackBufferAttributes:
|
||
return (SProcDbeGetBackBufferAttributes(client));
|
||
|
||
default:
|
||
return BadRequest;
|
||
}
|
||
|
||
} /* SProcDbeDispatch() */
|
||
|
||
/******************************************************************************
|
||
*
|
||
* DBE DIX Procedure: DbeSetupBackgroundPainter
|
||
*
|
||
* Description:
|
||
*
|
||
* This function sets up pGC to clear pixmaps.
|
||
*
|
||
* Return Values:
|
||
*
|
||
* TRUE - setup was successful
|
||
* FALSE - the window's background state is NONE
|
||
*
|
||
*****************************************************************************/
|
||
|
||
static Bool
|
||
DbeSetupBackgroundPainter(WindowPtr pWin, GCPtr pGC)
|
||
{
|
||
ChangeGCVal gcvalues[4];
|
||
int ts_x_origin, ts_y_origin;
|
||
PixUnion background;
|
||
int backgroundState;
|
||
Mask gcmask;
|
||
|
||
/* First take care of any ParentRelative stuff by altering the
|
||
* tile/stipple origin to match the coordinates of the upper-left
|
||
* corner of the first ancestor without a ParentRelative background.
|
||
* This coordinate is, of course, negative.
|
||
*/
|
||
ts_x_origin = ts_y_origin = 0;
|
||
while (pWin->backgroundState == ParentRelative) {
|
||
ts_x_origin -= pWin->origin.x;
|
||
ts_y_origin -= pWin->origin.y;
|
||
|
||
pWin = pWin->parent;
|
||
}
|
||
backgroundState = pWin->backgroundState;
|
||
background = pWin->background;
|
||
|
||
switch (backgroundState) {
|
||
case BackgroundPixel:
|
||
gcvalues[0].val = background.pixel;
|
||
gcvalues[1].val = FillSolid;
|
||
gcmask = GCForeground | GCFillStyle;
|
||
break;
|
||
|
||
case BackgroundPixmap:
|
||
gcvalues[0].val = FillTiled;
|
||
gcvalues[1].ptr = background.pixmap;
|
||
gcvalues[2].val = ts_x_origin;
|
||
gcvalues[3].val = ts_y_origin;
|
||
gcmask = GCFillStyle | GCTile | GCTileStipXOrigin | GCTileStipYOrigin;
|
||
break;
|
||
|
||
default:
|
||
/* pWin->backgroundState == None */
|
||
return FALSE;
|
||
}
|
||
|
||
return ChangeGC(NullClient, pGC, gcmask, gcvalues) == 0;
|
||
} /* DbeSetupBackgroundPainter() */
|
||
|
||
/******************************************************************************
|
||
*
|
||
* DBE DIX Procedure: DbeDrawableDelete
|
||
*
|
||
* Description:
|
||
*
|
||
* This is the resource delete function for dbeDrawableResType.
|
||
* It is registered when the drawable resource type is created in
|
||
* DbeExtensionInit().
|
||
*
|
||
* To make resource deletion simple, we do not do anything in this function
|
||
* and leave all resource deleteion to DbeWindowPrivDelete(), which will
|
||
* eventually be called or already has been called. Deletion functions are
|
||
* not guaranteed to be called in any particular order.
|
||
*
|
||
*****************************************************************************/
|
||
static int
|
||
DbeDrawableDelete(void *pDrawable, XID id)
|
||
{
|
||
return Success;
|
||
|
||
} /* DbeDrawableDelete() */
|
||
|
||
/******************************************************************************
|
||
*
|
||
* DBE DIX Procedure: DbeWindowPrivDelete
|
||
*
|
||
* Description:
|
||
*
|
||
* This is the resource delete function for dbeWindowPrivResType.
|
||
* It is registered when the drawable resource type is created in
|
||
* DbeExtensionInit().
|
||
*
|
||
*****************************************************************************/
|
||
static int
|
||
DbeWindowPrivDelete(void *pDbeWinPriv, XID id)
|
||
{
|
||
DbeScreenPrivPtr pDbeScreenPriv;
|
||
DbeWindowPrivPtr pDbeWindowPriv = (DbeWindowPrivPtr) pDbeWinPriv;
|
||
int i;
|
||
|
||
/*
|
||
**************************************************************************
|
||
** Remove the buffer ID from the ID array.
|
||
**************************************************************************
|
||
*/
|
||
|
||
/* Find the ID in the ID array. */
|
||
i = 0;
|
||
while ((i < pDbeWindowPriv->nBufferIDs) && (pDbeWindowPriv->IDs[i] != id)) {
|
||
i++;
|
||
}
|
||
|
||
if (i == pDbeWindowPriv->nBufferIDs) {
|
||
/* We did not find the ID in the array. We should never get here. */
|
||
return BadValue;
|
||
}
|
||
|
||
/* Remove the ID from the array. */
|
||
|
||
if (i < (pDbeWindowPriv->nBufferIDs - 1)) {
|
||
/* Compress the buffer ID array, overwriting the ID in the process. */
|
||
memmove(&pDbeWindowPriv->IDs[i], &pDbeWindowPriv->IDs[i + 1],
|
||
(pDbeWindowPriv->nBufferIDs - i - 1) * sizeof(XID));
|
||
}
|
||
else {
|
||
/* We are removing the last ID in the array, in which case, the
|
||
* assignement below is all that we need to do.
|
||
*/
|
||
}
|
||
pDbeWindowPriv->IDs[pDbeWindowPriv->nBufferIDs - 1] = DBE_FREE_ID_ELEMENT;
|
||
|
||
pDbeWindowPriv->nBufferIDs--;
|
||
|
||
/* If an extended array was allocated, then check to see if the remaining
|
||
* buffer IDs will fit in the static array.
|
||
*/
|
||
|
||
if ((pDbeWindowPriv->maxAvailableIDs > DBE_INIT_MAX_IDS) &&
|
||
(pDbeWindowPriv->nBufferIDs == DBE_INIT_MAX_IDS)) {
|
||
/* Copy the IDs back into the static array. */
|
||
memcpy(pDbeWindowPriv->initIDs, pDbeWindowPriv->IDs,
|
||
DBE_INIT_MAX_IDS * sizeof(XID));
|
||
|
||
/* Free the extended array; use the static array. */
|
||
free(pDbeWindowPriv->IDs);
|
||
pDbeWindowPriv->IDs = pDbeWindowPriv->initIDs;
|
||
pDbeWindowPriv->maxAvailableIDs = DBE_INIT_MAX_IDS;
|
||
}
|
||
|
||
/*
|
||
**************************************************************************
|
||
** Perform DDX level tasks.
|
||
**************************************************************************
|
||
*/
|
||
|
||
pDbeScreenPriv = DBE_SCREEN_PRIV_FROM_WINDOW_PRIV((DbeWindowPrivPtr)
|
||
pDbeWindowPriv);
|
||
(*pDbeScreenPriv->WinPrivDelete) ((DbeWindowPrivPtr) pDbeWindowPriv, id);
|
||
|
||
/*
|
||
**************************************************************************
|
||
** Perform miscellaneous tasks if this is the last buffer associated
|
||
** with the window.
|
||
**************************************************************************
|
||
*/
|
||
|
||
if (pDbeWindowPriv->nBufferIDs == 0) {
|
||
/* Reset the DBE window priv pointer. */
|
||
dixSetPrivate(&pDbeWindowPriv->pWindow->devPrivates, dbeWindowPrivKey,
|
||
NULL);
|
||
|
||
/* We are done with the window priv. */
|
||
free(pDbeWindowPriv);
|
||
}
|
||
|
||
return Success;
|
||
|
||
} /* DbeWindowPrivDelete() */
|
||
|
||
/******************************************************************************
|
||
*
|
||
* DBE DIX Procedure: DbeResetProc
|
||
*
|
||
* Description:
|
||
*
|
||
* This routine is called at the end of every server generation.
|
||
* It deallocates any memory reserved for the extension and performs any
|
||
* other tasks related to shutting down the extension.
|
||
*
|
||
*****************************************************************************/
|
||
static void
|
||
DbeResetProc(ExtensionEntry * extEntry)
|
||
{
|
||
int i;
|
||
ScreenPtr pScreen;
|
||
DbeScreenPrivPtr pDbeScreenPriv;
|
||
|
||
for (i = 0; i < screenInfo.numScreens; i++) {
|
||
pScreen = screenInfo.screens[i];
|
||
pDbeScreenPriv = DBE_SCREEN_PRIV(pScreen);
|
||
|
||
if (pDbeScreenPriv) {
|
||
/* Unwrap DestroyWindow, which was wrapped in DbeExtensionInit(). */
|
||
pScreen->DestroyWindow = pDbeScreenPriv->DestroyWindow;
|
||
pScreen->PositionWindow = pDbeScreenPriv->PositionWindow;
|
||
free(pDbeScreenPriv);
|
||
}
|
||
}
|
||
} /* DbeResetProc() */
|
||
|
||
/******************************************************************************
|
||
*
|
||
* DBE DIX Procedure: DbeDestroyWindow
|
||
*
|
||
* Description:
|
||
*
|
||
* This is the wrapper for pScreen->DestroyWindow.
|
||
* This function frees buffer resources for a window before it is
|
||
* destroyed.
|
||
*
|
||
*****************************************************************************/
|
||
|
||
static Bool
|
||
DbeDestroyWindow(WindowPtr pWin)
|
||
{
|
||
DbeScreenPrivPtr pDbeScreenPriv;
|
||
DbeWindowPrivPtr pDbeWindowPriv;
|
||
ScreenPtr pScreen;
|
||
Bool ret;
|
||
|
||
/*
|
||
**************************************************************************
|
||
** 1. Unwrap the member routine.
|
||
**************************************************************************
|
||
*/
|
||
|
||
pScreen = pWin->drawable.pScreen;
|
||
pDbeScreenPriv = DBE_SCREEN_PRIV(pScreen);
|
||
pScreen->DestroyWindow = pDbeScreenPriv->DestroyWindow;
|
||
|
||
/*
|
||
**************************************************************************
|
||
** 2. Do any work necessary before the member routine is called.
|
||
**
|
||
** Call the window priv delete function for all buffer IDs associated
|
||
** with this window.
|
||
**************************************************************************
|
||
*/
|
||
|
||
if ((pDbeWindowPriv = DBE_WINDOW_PRIV(pWin))) {
|
||
while (pDbeWindowPriv) {
|
||
/* *DbeWinPrivDelete() will free the window private and set it to
|
||
* NULL if there are no more buffer IDs associated with this
|
||
* window.
|
||
*/
|
||
FreeResource(pDbeWindowPriv->IDs[0], RT_NONE);
|
||
pDbeWindowPriv = DBE_WINDOW_PRIV(pWin);
|
||
}
|
||
}
|
||
|
||
/*
|
||
**************************************************************************
|
||
** 3. Call the member routine, saving its result if necessary.
|
||
**************************************************************************
|
||
*/
|
||
|
||
ret = (*pScreen->DestroyWindow) (pWin);
|
||
|
||
/*
|
||
**************************************************************************
|
||
** 4. Rewrap the member routine, restoring the wrapper value first in case
|
||
** the wrapper (or something that it wrapped) change this value.
|
||
**************************************************************************
|
||
*/
|
||
|
||
pDbeScreenPriv->DestroyWindow = pScreen->DestroyWindow;
|
||
pScreen->DestroyWindow = DbeDestroyWindow;
|
||
|
||
/*
|
||
**************************************************************************
|
||
** 5. Do any work necessary after the member routine has been called.
|
||
**
|
||
** In this case we do not need to do anything.
|
||
**************************************************************************
|
||
*/
|
||
|
||
return ret;
|
||
|
||
} /* DbeDestroyWindow() */
|
||
|
||
/******************************************************************************
|
||
*
|
||
* DBE DIX Procedure: DbeExtensionInit
|
||
*
|
||
* Description:
|
||
*
|
||
* Called from InitExtensions in main()
|
||
*
|
||
*****************************************************************************/
|
||
|
||
void
|
||
DbeExtensionInit(void)
|
||
{
|
||
ExtensionEntry *extEntry;
|
||
register int i, j;
|
||
ScreenPtr pScreen = NULL;
|
||
DbeScreenPrivPtr pDbeScreenPriv;
|
||
int nStubbedScreens = 0;
|
||
Bool ddxInitSuccess;
|
||
|
||
#ifdef PANORAMIX
|
||
if (!noPanoramiXExtension)
|
||
return;
|
||
#endif
|
||
|
||
/* Create the resource types. */
|
||
dbeDrawableResType =
|
||
CreateNewResourceType(DbeDrawableDelete, "dbeDrawable");
|
||
if (!dbeDrawableResType)
|
||
return;
|
||
dbeDrawableResType |= RC_DRAWABLE;
|
||
|
||
dbeWindowPrivResType =
|
||
CreateNewResourceType(DbeWindowPrivDelete, "dbeWindow");
|
||
if (!dbeWindowPrivResType)
|
||
return;
|
||
|
||
if (!dixRegisterPrivateKey(&dbeScreenPrivKeyRec, PRIVATE_SCREEN, 0))
|
||
return;
|
||
|
||
if (!dixRegisterPrivateKey(&dbeWindowPrivKeyRec, PRIVATE_WINDOW, 0))
|
||
return;
|
||
|
||
for (i = 0; i < screenInfo.numScreens; i++) {
|
||
/* For each screen, set up DBE screen privates and init DIX and DDX
|
||
* interface.
|
||
*/
|
||
|
||
pScreen = screenInfo.screens[i];
|
||
|
||
if (!(pDbeScreenPriv = malloc(sizeof(DbeScreenPrivRec)))) {
|
||
/* If we can not alloc a window or screen private,
|
||
* then free any privates that we already alloc'ed and return
|
||
*/
|
||
|
||
for (j = 0; j < i; j++) {
|
||
free(dixLookupPrivate(&screenInfo.screens[j]->devPrivates,
|
||
dbeScreenPrivKey));
|
||
dixSetPrivate(&screenInfo.screens[j]->devPrivates,
|
||
dbeScreenPrivKey, NULL);
|
||
}
|
||
return;
|
||
}
|
||
|
||
dixSetPrivate(&pScreen->devPrivates, dbeScreenPrivKey, pDbeScreenPriv);
|
||
|
||
{
|
||
/* We don't have DDX support for DBE anymore */
|
||
|
||
#ifndef DISABLE_MI_DBE_BY_DEFAULT
|
||
/* Setup DIX. */
|
||
pDbeScreenPriv->SetupBackgroundPainter = DbeSetupBackgroundPainter;
|
||
|
||
/* Setup DDX. */
|
||
ddxInitSuccess = miDbeInit(pScreen, pDbeScreenPriv);
|
||
|
||
/* DDX DBE initialization may have the side affect of
|
||
* reallocating pDbeScreenPriv, so we need to update it.
|
||
*/
|
||
pDbeScreenPriv = DBE_SCREEN_PRIV(pScreen);
|
||
|
||
if (ddxInitSuccess) {
|
||
/* Wrap DestroyWindow. The DDX initialization function
|
||
* already wrapped PositionWindow for us.
|
||
*/
|
||
|
||
pDbeScreenPriv->DestroyWindow = pScreen->DestroyWindow;
|
||
pScreen->DestroyWindow = DbeDestroyWindow;
|
||
}
|
||
else {
|
||
/* DDX initialization failed. Stub the screen. */
|
||
DbeStubScreen(pDbeScreenPriv, &nStubbedScreens);
|
||
}
|
||
#else
|
||
DbeStubScreen(pDbeScreenPriv, &nStubbedScreens);
|
||
#endif
|
||
|
||
}
|
||
|
||
} /* for (i = 0; i < screenInfo.numScreens; i++) */
|
||
|
||
if (nStubbedScreens == screenInfo.numScreens) {
|
||
/* All screens stubbed. Clean up and return. */
|
||
|
||
for (i = 0; i < screenInfo.numScreens; i++) {
|
||
free(dixLookupPrivate(&screenInfo.screens[i]->devPrivates,
|
||
dbeScreenPrivKey));
|
||
dixSetPrivate(&pScreen->devPrivates, dbeScreenPrivKey, NULL);
|
||
}
|
||
return;
|
||
}
|
||
|
||
/* Now add the extension. */
|
||
extEntry = AddExtension(DBE_PROTOCOL_NAME, DbeNumberEvents,
|
||
DbeNumberErrors, ProcDbeDispatch, SProcDbeDispatch,
|
||
DbeResetProc, StandardMinorOpcode);
|
||
|
||
dbeErrorBase = extEntry->errorBase;
|
||
SetResourceTypeErrorValue(dbeWindowPrivResType,
|
||
dbeErrorBase + DbeBadBuffer);
|
||
SetResourceTypeErrorValue(dbeDrawableResType, dbeErrorBase + DbeBadBuffer);
|
||
|
||
} /* DbeExtensionInit() */
|