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-rw-r--r--xorg-server/dbe/midbe.c1536
1 files changed, 739 insertions, 797 deletions
diff --git a/xorg-server/dbe/midbe.c b/xorg-server/dbe/midbe.c
index 76d2e00aa..d810d992e 100644
--- a/xorg-server/dbe/midbe.c
+++ b/xorg-server/dbe/midbe.c
@@ -1,797 +1,739 @@
-/******************************************************************************
- *
- * 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.
- *
- * Machine-independent DBE code
- *
- *****************************************************************************/
-
-
-/* INCLUDES */
-
-#ifdef HAVE_DIX_CONFIG_H
-#include <dix-config.h>
-#endif
-
-#include <X11/X.h>
-#include <X11/Xproto.h>
-#include "misc.h"
-#include "os.h"
-#include "windowstr.h"
-#include "scrnintstr.h"
-#include "pixmapstr.h"
-#include "extnsionst.h"
-#include "dixstruct.h"
-#include "resource.h"
-#include "opaque.h"
-#include "dbestruct.h"
-#include "midbestr.h"
-#include "regionstr.h"
-#include "gcstruct.h"
-#include "inputstr.h"
-#include "midbe.h"
-#include "xace.h"
-
-#include <stdio.h>
-
-static DevPrivateKeyRec miDbeWindowPrivPrivKeyRec;
-#define miDbeWindowPrivPrivKey (&miDbeWindowPrivPrivKeyRec)
-
-
-/******************************************************************************
- *
- * DBE MI Procedure: miDbeGetVisualInfo
- *
- * Description:
- *
- * This is the MI function for the DbeGetVisualInfo request. This function
- * is called through pDbeScreenPriv->GetVisualInfo. This function is also
- * called for the DbeAllocateBackBufferName request at the extension level;
- * it is called by ProcDbeAllocateBackBufferName() in dbe.c.
- *
- * If memory allocation fails or we can not get the visual info, this
- * function returns FALSE. Otherwise, it returns TRUE for success.
- *
- *****************************************************************************/
-
-static Bool
-miDbeGetVisualInfo(ScreenPtr pScreen, XdbeScreenVisualInfo *pScrVisInfo)
-{
- register int i, j, k;
- register int count;
- DepthPtr pDepth;
- XdbeVisualInfo *visInfo;
-
-
- /* Determine number of visuals for this screen. */
- for (i = 0, count = 0; i < pScreen->numDepths; i++)
- {
- count += pScreen->allowedDepths[i].numVids;
- }
-
- /* Allocate an array of XdbeVisualInfo items. */
- if (!(visInfo = (XdbeVisualInfo *)malloc(count * sizeof(XdbeVisualInfo))))
- {
- return FALSE; /* memory alloc failure */
- }
-
- for (i = 0, k = 0; i < pScreen->numDepths; i++)
- {
- /* For each depth of this screen, get visual information. */
-
- pDepth = &pScreen->allowedDepths[i];
-
- for (j = 0; j < pDepth->numVids; j++)
- {
- /* For each visual for this depth of this screen, get visual ID
- * and visual depth. Since this is MI code, we will always return
- * the same performance level for all visuals (0). A higher
- * performance level value indicates higher performance.
- */
- visInfo[k].visual = pDepth->vids[j];
- visInfo[k].depth = pDepth->depth;
- visInfo[k].perflevel = 0;
- k++;
- }
- }
-
- /* Record the number of visuals and point visual_depth to
- * the array of visual info.
- */
- pScrVisInfo->count = count;
- pScrVisInfo->visinfo = visInfo;
-
- return TRUE; /* success */
-
-} /* miDbeGetVisualInfo() */
-
-
-/******************************************************************************
- *
- * DBE MI Procedure: miAllocBackBufferName
- *
- * Description:
- *
- * This is the MI function for the DbeAllocateBackBufferName request.
- *
- *****************************************************************************/
-
-static int
-miDbeAllocBackBufferName(WindowPtr pWin, XID bufId, int swapAction)
-{
- ScreenPtr pScreen;
- DbeWindowPrivPtr pDbeWindowPriv;
- MiDbeWindowPrivPrivPtr pDbeWindowPrivPriv;
- DbeScreenPrivPtr pDbeScreenPriv;
- GCPtr pGC;
- xRectangle clearRect;
- int rc;
-
-
- pScreen = pWin->drawable.pScreen;
- pDbeWindowPriv = DBE_WINDOW_PRIV(pWin);
-
- if (pDbeWindowPriv->nBufferIDs == 0)
- {
- /* There is no buffer associated with the window.
- * We have to create the window priv priv. Remember, the window
- * priv was created at the DIX level, so all we need to do is
- * create the priv priv and attach it to the priv.
- */
-
- pDbeScreenPriv = DBE_SCREEN_PRIV(pScreen);
-
- /* Setup the window priv priv. */
- pDbeWindowPrivPriv = MI_DBE_WINDOW_PRIV_PRIV(pDbeWindowPriv);
- pDbeWindowPrivPriv->pDbeWindowPriv = pDbeWindowPriv;
-
- /* Get a front pixmap. */
- if (!(pDbeWindowPrivPriv->pFrontBuffer =
- (*pScreen->CreatePixmap)(pScreen, pDbeWindowPriv->width,
- pDbeWindowPriv->height,
- pWin->drawable.depth, 0)))
- {
- return BadAlloc;
- }
-
- /* Get a back pixmap. */
- if (!(pDbeWindowPrivPriv->pBackBuffer =
- (*pScreen->CreatePixmap)(pScreen, pDbeWindowPriv->width,
- pDbeWindowPriv->height,
- pWin->drawable.depth, 0)))
- {
- (*pScreen->DestroyPixmap)(pDbeWindowPrivPriv->pFrontBuffer);
- return BadAlloc;
- }
-
- /* Security creation/labeling check. */
- rc = XaceHook(XACE_RESOURCE_ACCESS, serverClient, bufId,
- dbeDrawableResType, pDbeWindowPrivPriv->pBackBuffer,
- RT_WINDOW, pWin, DixCreateAccess);
-
- /* Make the back pixmap a DBE drawable resource. */
- if (rc != Success || !AddResource(bufId, dbeDrawableResType,
- pDbeWindowPrivPriv->pBackBuffer))
- {
- /* free the buffer and the drawable resource */
- FreeResource(bufId, RT_NONE);
- return (rc == Success) ? BadAlloc : rc;
- }
-
- /* Clear the back buffer. */
- pGC = GetScratchGC(pWin->drawable.depth, pWin->drawable.pScreen);
- if ((*pDbeScreenPriv->SetupBackgroundPainter)(pWin, pGC))
- {
- ValidateGC((DrawablePtr)pDbeWindowPrivPriv->pBackBuffer, pGC);
- clearRect.x = clearRect.y = 0;
- clearRect.width = pDbeWindowPrivPriv->pBackBuffer->drawable.width;
- clearRect.height = pDbeWindowPrivPriv->pBackBuffer->drawable.height;
- (*pGC->ops->PolyFillRect)(
- (DrawablePtr)pDbeWindowPrivPriv->pBackBuffer, pGC, 1,
- &clearRect);
- }
- FreeScratchGC(pGC);
-
- } /* if no buffer associated with the window */
-
- else
- {
- /* A buffer is already associated with the window.
- * Place the new buffer ID information at the head of the ID list.
- */
-
- /* Associate the new ID with an existing pixmap. */
- pDbeWindowPrivPriv = MI_DBE_WINDOW_PRIV_PRIV(pDbeWindowPriv);
- if (!AddResource(bufId, dbeDrawableResType,
- (pointer)pDbeWindowPrivPriv->pBackBuffer))
- {
- return BadAlloc;
- }
-
- }
-
- return Success;
-
-} /* miDbeAllocBackBufferName() */
-
-
-/******************************************************************************
- *
- * DBE MI Procedure: miDbeAliasBuffers
- *
- * Description:
- *
- * This function associates all XIDs of a buffer with the back pixmap
- * stored in the window priv.
- *
- *****************************************************************************/
-
-static void
-miDbeAliasBuffers(DbeWindowPrivPtr pDbeWindowPriv)
-{
- int i;
- MiDbeWindowPrivPrivPtr pDbeWindowPrivPriv =
- MI_DBE_WINDOW_PRIV_PRIV(pDbeWindowPriv);
-
- for (i = 0; i < pDbeWindowPriv->nBufferIDs; i++)
- {
- ChangeResourceValue(pDbeWindowPriv->IDs[i], dbeDrawableResType,
- (pointer)pDbeWindowPrivPriv->pBackBuffer);
- }
-
-} /* miDbeAliasBuffers() */
-
-
-/******************************************************************************
- *
- * DBE MI Procedure: miDbeSwapBuffers
- *
- * Description:
- *
- * This is the MI function for the DbeSwapBuffers request.
- *
- *****************************************************************************/
-
-static int
-miDbeSwapBuffers(ClientPtr client, int *pNumWindows, DbeSwapInfoPtr swapInfo)
-{
- DbeScreenPrivPtr pDbeScreenPriv;
- GCPtr pGC;
- WindowPtr pWin;
- MiDbeWindowPrivPrivPtr pDbeWindowPrivPriv;
- PixmapPtr pTmpBuffer;
- xRectangle clearRect;
-
-
- pWin = swapInfo[0].pWindow;
- pDbeScreenPriv = DBE_SCREEN_PRIV_FROM_WINDOW(pWin);
- pDbeWindowPrivPriv = MI_DBE_WINDOW_PRIV_PRIV_FROM_WINDOW(pWin);
- pGC = GetScratchGC(pWin->drawable.depth, pWin->drawable.pScreen);
-
- /*
- **********************************************************************
- ** Setup before swap.
- **********************************************************************
- */
-
- switch(swapInfo[0].swapAction)
- {
- case XdbeUndefined:
- break;
-
- case XdbeBackground:
- break;
-
- case XdbeUntouched:
- ValidateGC((DrawablePtr)pDbeWindowPrivPriv->pFrontBuffer, pGC);
- (*pGC->ops->CopyArea)((DrawablePtr)pWin,
- (DrawablePtr)pDbeWindowPrivPriv->pFrontBuffer,
- pGC, 0, 0, pWin->drawable.width,
- pWin->drawable.height, 0, 0);
- break;
-
- case XdbeCopied:
- break;
-
- }
-
- /*
- **********************************************************************
- ** Swap.
- **********************************************************************
- */
-
- ValidateGC((DrawablePtr)pWin, pGC);
- (*pGC->ops->CopyArea)((DrawablePtr)pDbeWindowPrivPriv->pBackBuffer,
- (DrawablePtr)pWin, pGC, 0, 0,
- pWin->drawable.width, pWin->drawable.height,
- 0, 0);
-
- /*
- **********************************************************************
- ** Tasks after swap.
- **********************************************************************
- */
-
- switch(swapInfo[0].swapAction)
- {
- case XdbeUndefined:
- break;
-
- case XdbeBackground:
- if ((*pDbeScreenPriv->SetupBackgroundPainter)(pWin, pGC))
- {
- ValidateGC((DrawablePtr)pDbeWindowPrivPriv->pBackBuffer, pGC);
- clearRect.x = 0;
- clearRect.y = 0;
- clearRect.width =
- pDbeWindowPrivPriv->pBackBuffer->drawable.width;
- clearRect.height =
- pDbeWindowPrivPriv->pBackBuffer->drawable.height;
- (*pGC->ops->PolyFillRect)(
- (DrawablePtr)pDbeWindowPrivPriv->pBackBuffer,
- pGC, 1, &clearRect);
- }
- break;
-
- case XdbeUntouched:
- /* Swap pixmap pointers. */
- pTmpBuffer = pDbeWindowPrivPriv->pBackBuffer;
- pDbeWindowPrivPriv->pBackBuffer =
- pDbeWindowPrivPriv->pFrontBuffer;
- pDbeWindowPrivPriv->pFrontBuffer = pTmpBuffer;
-
- miDbeAliasBuffers(pDbeWindowPrivPriv->pDbeWindowPriv);
-
- break;
-
- case XdbeCopied:
- break;
-
- }
-
- /* Remove the swapped window from the swap information array and decrement
- * pNumWindows to indicate to the DIX level how many windows were actually
- * swapped.
- */
-
- if (*pNumWindows > 1)
- {
- /* We were told to swap more than one window, but we only swapped the
- * first one. Remove the first window in the list by moving the last
- * window to the beginning.
- */
- swapInfo[0].pWindow = swapInfo[*pNumWindows - 1].pWindow;
- swapInfo[0].swapAction = swapInfo[*pNumWindows - 1].swapAction;
-
- /* Clear the last window information just to be safe. */
- swapInfo[*pNumWindows - 1].pWindow = (WindowPtr)NULL;
- swapInfo[*pNumWindows - 1].swapAction = 0;
- }
- else
- {
- /* Clear the window information just to be safe. */
- swapInfo[0].pWindow = (WindowPtr)NULL;
- swapInfo[0].swapAction = 0;
- }
-
- (*pNumWindows)--;
-
- FreeScratchGC(pGC);
-
- return Success;
-
-} /* miSwapBuffers() */
-
-
-/******************************************************************************
- *
- * DBE MI Procedure: miDbeWinPrivDelete
- *
- * Description:
- *
- * This is the MI function for deleting the dbeWindowPrivResType resource.
- * This function is invoked indirectly by calling FreeResource() to free
- * the resources associated with a DBE buffer ID. There are 5 ways that
- * miDbeWinPrivDelete() can be called by FreeResource(). They are:
- *
- * - A DBE window is destroyed, in which case the DbeDestroyWindow()
- * wrapper is invoked. The wrapper calls FreeResource() for all DBE
- * buffer IDs.
- *
- * - miDbeAllocBackBufferName() calls FreeResource() to clean up resources
- * after a buffer allocation failure.
- *
- * - The PositionWindow wrapper, miDbePositionWindow(), calls
- * FreeResource() when it fails to create buffers of the new size.
- * FreeResource() is called for all DBE buffer IDs.
- *
- * - FreeClientResources() calls FreeResource() when a client dies or the
- * the server resets.
- *
- * When FreeResource() is called for a DBE buffer ID, the delete function
- * for the only other type of DBE resource, dbeDrawableResType, is also
- * invoked. This delete function (DbeDrawableDelete) is a NOOP to make
- * resource deletion easier. It is not guaranteed which delete function is
- * called first. Hence, we will let miDbeWinPrivDelete() free all DBE
- * resources.
- *
- * This function deletes/frees the following stuff associated with
- * the window private:
- *
- * - the ID node in the ID list representing the passed in ID.
- *
- * In addition, pDbeWindowPriv->nBufferIDs is decremented.
- *
- * If this function is called for the last/only buffer ID for a window,
- * these are additionally deleted/freed:
- *
- * - the front and back pixmaps
- * - the window priv itself
- *
- *****************************************************************************/
-
-static void
-miDbeWinPrivDelete(DbeWindowPrivPtr pDbeWindowPriv, XID bufId)
-{
- MiDbeWindowPrivPrivPtr pDbeWindowPrivPriv;
-
-
- if (pDbeWindowPriv->nBufferIDs != 0)
- {
- /* We still have at least one more buffer ID associated with this
- * window.
- */
- return;
- }
-
-
- /* We have no more buffer IDs associated with this window. We need to
- * free some stuff.
- */
-
- pDbeWindowPrivPriv = MI_DBE_WINDOW_PRIV_PRIV(pDbeWindowPriv);
-
- /* Destroy the front and back pixmaps. */
- if (pDbeWindowPrivPriv->pFrontBuffer)
- {
- (*pDbeWindowPriv->pWindow->drawable.pScreen->DestroyPixmap)(
- pDbeWindowPrivPriv->pFrontBuffer);
- }
- if (pDbeWindowPrivPriv->pBackBuffer)
- {
- (*pDbeWindowPriv->pWindow->drawable.pScreen->DestroyPixmap)(
- pDbeWindowPrivPriv->pBackBuffer);
- }
-
-} /* miDbeWinPrivDelete() */
-
-
-/******************************************************************************
- *
- * DBE MI Procedure: miDbePositionWindow
- *
- * Description:
- *
- * This function was cloned from miMbxPositionWindow() in mimultibuf.c.
- * This function resizes the buffer when the window is resized.
- *
- *****************************************************************************/
-
-static Bool
-miDbePositionWindow(WindowPtr pWin, int x, int y)
-{
- ScreenPtr pScreen;
- DbeScreenPrivPtr pDbeScreenPriv;
- DbeWindowPrivPtr pDbeWindowPriv;
- int width, height;
- int dx, dy, dw, dh;
- int sourcex, sourcey;
- int destx, desty;
- int savewidth, saveheight;
- PixmapPtr pFrontBuffer;
- PixmapPtr pBackBuffer;
- Bool clear;
- GCPtr pGC;
- xRectangle clearRect;
- Bool ret;
-
-
- /*
- **************************************************************************
- ** 1. Unwrap the member routine.
- **************************************************************************
- */
-
- pScreen = pWin->drawable.pScreen;
- pDbeScreenPriv = DBE_SCREEN_PRIV(pScreen);
- pScreen->PositionWindow = pDbeScreenPriv->PositionWindow;
-
- /*
- **************************************************************************
- ** 2. Do any work necessary before the member routine is called.
- **
- ** In this case we do not need to do anything.
- **************************************************************************
- */
-
- /*
- **************************************************************************
- ** 3. Call the member routine, saving its result if necessary.
- **************************************************************************
- */
-
- ret = (*pScreen->PositionWindow)(pWin, x, y);
-
- /*
- **************************************************************************
- ** 4. Rewrap the member routine, restoring the wrapper value first in case
- ** the wrapper (or something that it wrapped) change this value.
- **************************************************************************
- */
-
- pDbeScreenPriv->PositionWindow = pScreen->PositionWindow;
- pScreen->PositionWindow = miDbePositionWindow;
-
- /*
- **************************************************************************
- ** 5. Do any work necessary after the member routine has been called.
- **************************************************************************
- */
-
- if (!(pDbeWindowPriv = DBE_WINDOW_PRIV(pWin)))
- {
- return ret;
- }
-
- if (pDbeWindowPriv->width == pWin->drawable.width &&
- pDbeWindowPriv->height == pWin->drawable.height)
- {
- return ret;
- }
-
- width = pWin->drawable.width;
- height = pWin->drawable.height;
-
- dx = pWin->drawable.x - pDbeWindowPriv->x;
- dy = pWin->drawable.y - pDbeWindowPriv->y;
- dw = width - pDbeWindowPriv->width;
- dh = height - pDbeWindowPriv->height;
-
- GravityTranslate (0, 0, -dx, -dy, dw, dh, pWin->bitGravity, &destx, &desty);
-
- clear = ((pDbeWindowPriv->width < (unsigned short)width ) ||
- (pDbeWindowPriv->height < (unsigned short)height) ||
- (pWin->bitGravity == ForgetGravity));
-
- sourcex = 0;
- sourcey = 0;
- savewidth = pDbeWindowPriv->width;
- saveheight = pDbeWindowPriv->height;
-
- /* Clip rectangle to source and destination. */
- if (destx < 0)
- {
- savewidth += destx;
- sourcex -= destx;
- destx = 0;
- }
-
- if (destx + savewidth > width)
- {
- savewidth = width - destx;
- }
-
- if (desty < 0)
- {
- saveheight += desty;
- sourcey -= desty;
- desty = 0;
- }
-
- if (desty + saveheight > height)
- {
- saveheight = height - desty;
- }
-
- pDbeWindowPriv->width = width;
- pDbeWindowPriv->height = height;
- pDbeWindowPriv->x = pWin->drawable.x;
- pDbeWindowPriv->y = pWin->drawable.y;
-
- pGC = GetScratchGC (pWin->drawable.depth, pScreen);
-
- if (clear)
- {
- if ((*pDbeScreenPriv->SetupBackgroundPainter)(pWin, pGC))
- {
- clearRect.x = 0;
- clearRect.y = 0;
- clearRect.width = width;
- clearRect.height = height;
- }
- else
- {
- clear = FALSE;
- }
- }
-
- /* Create DBE buffer pixmaps equal to size of resized window. */
- pFrontBuffer = (*pScreen->CreatePixmap)(pScreen, width, height,
- pWin->drawable.depth, 0);
-
- pBackBuffer = (*pScreen->CreatePixmap)(pScreen, width, height,
- pWin->drawable.depth, 0);
-
- if (!pFrontBuffer || !pBackBuffer)
- {
- /* We failed at creating 1 or 2 of the pixmaps. */
-
- if (pFrontBuffer)
- {
- (*pScreen->DestroyPixmap)(pFrontBuffer);
- }
-
- if (pBackBuffer)
- {
- (*pScreen->DestroyPixmap)(pBackBuffer);
- }
-
- /* Destroy all buffers for this window. */
- while (pDbeWindowPriv)
- {
- /* DbeWindowPrivDelete() will free the window private if there no
- * more buffer IDs associated with this window.
- */
- FreeResource(pDbeWindowPriv->IDs[0], RT_NONE);
- pDbeWindowPriv = DBE_WINDOW_PRIV(pWin);
- }
-
- FreeScratchGC(pGC);
- return FALSE;
- }
-
- else
- {
- /* Clear out the new DBE buffer pixmaps. */
-
- MiDbeWindowPrivPrivPtr pDbeWindowPrivPriv;
-
-
- pDbeWindowPrivPriv = MI_DBE_WINDOW_PRIV_PRIV(pDbeWindowPriv);
-
- /* I suppose this could avoid quite a bit of work if
- * it computed the minimal area required.
- */
- ValidateGC(&pFrontBuffer->drawable, pGC);
- if (clear)
- {
- (*pGC->ops->PolyFillRect)((DrawablePtr)pFrontBuffer, pGC, 1,
- &clearRect);
- }
- /* Copy the contents of the old front pixmap to the new one. */
- if (pWin->bitGravity != ForgetGravity)
- {
- (*pGC->ops->CopyArea)((DrawablePtr)pDbeWindowPrivPriv->pFrontBuffer,
- (DrawablePtr)pFrontBuffer, pGC, sourcex,
- sourcey, savewidth, saveheight, destx, desty);
- }
-
- ValidateGC(&pBackBuffer->drawable, pGC);
- if (clear)
- {
- (*pGC->ops->PolyFillRect)((DrawablePtr)pBackBuffer , pGC, 1,
- &clearRect);
- }
- /* Copy the contents of the old back pixmap to the new one. */
- if (pWin->bitGravity != ForgetGravity)
- {
- (*pGC->ops->CopyArea)((DrawablePtr)pDbeWindowPrivPriv->pBackBuffer,
- (DrawablePtr)pBackBuffer, pGC, sourcex,
- sourcey, savewidth, saveheight, destx, desty);
- }
-
- /* Destroy the old pixmaps, and point the DBE window priv to the new
- * pixmaps.
- */
-
- (*pScreen->DestroyPixmap)(pDbeWindowPrivPriv->pFrontBuffer);
- (*pScreen->DestroyPixmap)(pDbeWindowPrivPriv->pBackBuffer);
-
- pDbeWindowPrivPriv->pFrontBuffer = pFrontBuffer;
- pDbeWindowPrivPriv->pBackBuffer = pBackBuffer;
-
- /* Make sure all XID are associated with the new back pixmap. */
- miDbeAliasBuffers(pDbeWindowPriv);
-
- FreeScratchGC(pGC);
- }
-
- return ret;
-
-} /* miDbePositionWindow() */
-
-
-/******************************************************************************
- *
- * DBE MI Procedure: miDbeResetProc
- *
- * Description:
- *
- * This function is called from DbeResetProc(), which is called at the end
- * of every server generation. This function peforms any MI-specific
- * shutdown tasks.
- *
- *****************************************************************************/
-
-static void
-miDbeResetProc(ScreenPtr pScreen)
-{
- DbeScreenPrivPtr pDbeScreenPriv;
-
-
- pDbeScreenPriv = DBE_SCREEN_PRIV(pScreen);
-
- /* Unwrap wrappers */
- pScreen->PositionWindow = pDbeScreenPriv->PositionWindow;
-
-} /* miDbeResetProc() */
-
-
-/******************************************************************************
- *
- * DBE MI Procedure: miDbeInit
- *
- * Description:
- *
- * This is the MI initialization function called by DbeExtensionInit().
- *
- *****************************************************************************/
-
-Bool
-miDbeInit(ScreenPtr pScreen, DbeScreenPrivPtr pDbeScreenPriv)
-{
- if (!dixRegisterPrivateKey(&miDbeWindowPrivPrivKeyRec, PRIVATE_DBE_WINDOW,
- sizeof(MiDbeWindowPrivPrivRec)))
- return FALSE;
-
- /* Wrap functions. */
- pDbeScreenPriv->PositionWindow = pScreen->PositionWindow;
- pScreen->PositionWindow = miDbePositionWindow;
-
- /* Initialize the per-screen DBE function pointers. */
- pDbeScreenPriv->GetVisualInfo = miDbeGetVisualInfo;
- pDbeScreenPriv->AllocBackBufferName = miDbeAllocBackBufferName;
- pDbeScreenPriv->SwapBuffers = miDbeSwapBuffers;
- pDbeScreenPriv->BeginIdiom = 0;
- pDbeScreenPriv->EndIdiom = 0;
- pDbeScreenPriv->ResetProc = miDbeResetProc;
- pDbeScreenPriv->WinPrivDelete = miDbeWinPrivDelete;
-
- return TRUE;
-
-} /* miDbeInit() */
+/******************************************************************************
+ *
+ * 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.
+ *
+ * Machine-independent DBE code
+ *
+ *****************************************************************************/
+
+/* INCLUDES */
+
+#ifdef HAVE_DIX_CONFIG_H
+#include <dix-config.h>
+#endif
+
+#include <X11/X.h>
+#include <X11/Xproto.h>
+#include "misc.h"
+#include "os.h"
+#include "windowstr.h"
+#include "scrnintstr.h"
+#include "pixmapstr.h"
+#include "extnsionst.h"
+#include "dixstruct.h"
+#include "resource.h"
+#include "opaque.h"
+#include "dbestruct.h"
+#include "midbestr.h"
+#include "regionstr.h"
+#include "gcstruct.h"
+#include "inputstr.h"
+#include "midbe.h"
+#include "xace.h"
+
+#include <stdio.h>
+
+static DevPrivateKeyRec miDbeWindowPrivPrivKeyRec;
+
+#define miDbeWindowPrivPrivKey (&miDbeWindowPrivPrivKeyRec)
+
+/******************************************************************************
+ *
+ * DBE MI Procedure: miDbeGetVisualInfo
+ *
+ * Description:
+ *
+ * This is the MI function for the DbeGetVisualInfo request. This function
+ * is called through pDbeScreenPriv->GetVisualInfo. This function is also
+ * called for the DbeAllocateBackBufferName request at the extension level;
+ * it is called by ProcDbeAllocateBackBufferName() in dbe.c.
+ *
+ * If memory allocation fails or we can not get the visual info, this
+ * function returns FALSE. Otherwise, it returns TRUE for success.
+ *
+ *****************************************************************************/
+
+static Bool
+miDbeGetVisualInfo(ScreenPtr pScreen, XdbeScreenVisualInfo * pScrVisInfo)
+{
+ register int i, j, k;
+ register int count;
+ DepthPtr pDepth;
+ XdbeVisualInfo *visInfo;
+
+ /* Determine number of visuals for this screen. */
+ for (i = 0, count = 0; i < pScreen->numDepths; i++) {
+ count += pScreen->allowedDepths[i].numVids;
+ }
+
+ /* Allocate an array of XdbeVisualInfo items. */
+ if (!(visInfo = (XdbeVisualInfo *) malloc(count * sizeof(XdbeVisualInfo)))) {
+ return FALSE; /* memory alloc failure */
+ }
+
+ for (i = 0, k = 0; i < pScreen->numDepths; i++) {
+ /* For each depth of this screen, get visual information. */
+
+ pDepth = &pScreen->allowedDepths[i];
+
+ for (j = 0; j < pDepth->numVids; j++) {
+ /* For each visual for this depth of this screen, get visual ID
+ * and visual depth. Since this is MI code, we will always return
+ * the same performance level for all visuals (0). A higher
+ * performance level value indicates higher performance.
+ */
+ visInfo[k].visual = pDepth->vids[j];
+ visInfo[k].depth = pDepth->depth;
+ visInfo[k].perflevel = 0;
+ k++;
+ }
+ }
+
+ /* Record the number of visuals and point visual_depth to
+ * the array of visual info.
+ */
+ pScrVisInfo->count = count;
+ pScrVisInfo->visinfo = visInfo;
+
+ return TRUE; /* success */
+
+} /* miDbeGetVisualInfo() */
+
+/******************************************************************************
+ *
+ * DBE MI Procedure: miAllocBackBufferName
+ *
+ * Description:
+ *
+ * This is the MI function for the DbeAllocateBackBufferName request.
+ *
+ *****************************************************************************/
+
+static int
+miDbeAllocBackBufferName(WindowPtr pWin, XID bufId, int swapAction)
+{
+ ScreenPtr pScreen;
+ DbeWindowPrivPtr pDbeWindowPriv;
+ MiDbeWindowPrivPrivPtr pDbeWindowPrivPriv;
+ DbeScreenPrivPtr pDbeScreenPriv;
+ GCPtr pGC;
+ xRectangle clearRect;
+ int rc;
+
+ pScreen = pWin->drawable.pScreen;
+ pDbeWindowPriv = DBE_WINDOW_PRIV(pWin);
+
+ if (pDbeWindowPriv->nBufferIDs == 0) {
+ /* There is no buffer associated with the window.
+ * We have to create the window priv priv. Remember, the window
+ * priv was created at the DIX level, so all we need to do is
+ * create the priv priv and attach it to the priv.
+ */
+
+ pDbeScreenPriv = DBE_SCREEN_PRIV(pScreen);
+
+ /* Setup the window priv priv. */
+ pDbeWindowPrivPriv = MI_DBE_WINDOW_PRIV_PRIV(pDbeWindowPriv);
+ pDbeWindowPrivPriv->pDbeWindowPriv = pDbeWindowPriv;
+
+ /* Get a front pixmap. */
+ if (!(pDbeWindowPrivPriv->pFrontBuffer =
+ (*pScreen->CreatePixmap) (pScreen, pDbeWindowPriv->width,
+ pDbeWindowPriv->height,
+ pWin->drawable.depth, 0))) {
+ return BadAlloc;
+ }
+
+ /* Get a back pixmap. */
+ if (!(pDbeWindowPrivPriv->pBackBuffer =
+ (*pScreen->CreatePixmap) (pScreen, pDbeWindowPriv->width,
+ pDbeWindowPriv->height,
+ pWin->drawable.depth, 0))) {
+ (*pScreen->DestroyPixmap) (pDbeWindowPrivPriv->pFrontBuffer);
+ return BadAlloc;
+ }
+
+ /* Security creation/labeling check. */
+ rc = XaceHook(XACE_RESOURCE_ACCESS, serverClient, bufId,
+ dbeDrawableResType, pDbeWindowPrivPriv->pBackBuffer,
+ RT_WINDOW, pWin, DixCreateAccess);
+
+ /* Make the back pixmap a DBE drawable resource. */
+ if (rc != Success || !AddResource(bufId, dbeDrawableResType,
+ pDbeWindowPrivPriv->pBackBuffer)) {
+ /* free the buffer and the drawable resource */
+ FreeResource(bufId, RT_NONE);
+ return (rc == Success) ? BadAlloc : rc;
+ }
+
+ /* Clear the back buffer. */
+ pGC = GetScratchGC(pWin->drawable.depth, pWin->drawable.pScreen);
+ if ((*pDbeScreenPriv->SetupBackgroundPainter) (pWin, pGC)) {
+ ValidateGC((DrawablePtr) pDbeWindowPrivPriv->pBackBuffer, pGC);
+ clearRect.x = clearRect.y = 0;
+ clearRect.width = pDbeWindowPrivPriv->pBackBuffer->drawable.width;
+ clearRect.height = pDbeWindowPrivPriv->pBackBuffer->drawable.height;
+ (*pGC->ops->PolyFillRect) ((DrawablePtr) pDbeWindowPrivPriv->
+ pBackBuffer, pGC, 1, &clearRect);
+ }
+ FreeScratchGC(pGC);
+
+ } /* if no buffer associated with the window */
+
+ else {
+ /* A buffer is already associated with the window.
+ * Place the new buffer ID information at the head of the ID list.
+ */
+
+ /* Associate the new ID with an existing pixmap. */
+ pDbeWindowPrivPriv = MI_DBE_WINDOW_PRIV_PRIV(pDbeWindowPriv);
+ if (!AddResource(bufId, dbeDrawableResType,
+ (pointer) pDbeWindowPrivPriv->pBackBuffer)) {
+ return BadAlloc;
+ }
+
+ }
+
+ return Success;
+
+} /* miDbeAllocBackBufferName() */
+
+/******************************************************************************
+ *
+ * DBE MI Procedure: miDbeAliasBuffers
+ *
+ * Description:
+ *
+ * This function associates all XIDs of a buffer with the back pixmap
+ * stored in the window priv.
+ *
+ *****************************************************************************/
+
+static void
+miDbeAliasBuffers(DbeWindowPrivPtr pDbeWindowPriv)
+{
+ int i;
+ MiDbeWindowPrivPrivPtr pDbeWindowPrivPriv =
+ MI_DBE_WINDOW_PRIV_PRIV(pDbeWindowPriv);
+
+ for (i = 0; i < pDbeWindowPriv->nBufferIDs; i++) {
+ ChangeResourceValue(pDbeWindowPriv->IDs[i], dbeDrawableResType,
+ (pointer) pDbeWindowPrivPriv->pBackBuffer);
+ }
+
+} /* miDbeAliasBuffers() */
+
+/******************************************************************************
+ *
+ * DBE MI Procedure: miDbeSwapBuffers
+ *
+ * Description:
+ *
+ * This is the MI function for the DbeSwapBuffers request.
+ *
+ *****************************************************************************/
+
+static int
+miDbeSwapBuffers(ClientPtr client, int *pNumWindows, DbeSwapInfoPtr swapInfo)
+{
+ DbeScreenPrivPtr pDbeScreenPriv;
+ GCPtr pGC;
+ WindowPtr pWin;
+ MiDbeWindowPrivPrivPtr pDbeWindowPrivPriv;
+ PixmapPtr pTmpBuffer;
+ xRectangle clearRect;
+
+ pWin = swapInfo[0].pWindow;
+ pDbeScreenPriv = DBE_SCREEN_PRIV_FROM_WINDOW(pWin);
+ pDbeWindowPrivPriv = MI_DBE_WINDOW_PRIV_PRIV_FROM_WINDOW(pWin);
+ pGC = GetScratchGC(pWin->drawable.depth, pWin->drawable.pScreen);
+
+ /*
+ **********************************************************************
+ ** Setup before swap.
+ **********************************************************************
+ */
+
+ switch (swapInfo[0].swapAction) {
+ case XdbeUndefined:
+ break;
+
+ case XdbeBackground:
+ break;
+
+ case XdbeUntouched:
+ ValidateGC((DrawablePtr) pDbeWindowPrivPriv->pFrontBuffer, pGC);
+ (*pGC->ops->CopyArea) ((DrawablePtr) pWin,
+ (DrawablePtr) pDbeWindowPrivPriv->pFrontBuffer,
+ pGC, 0, 0, pWin->drawable.width,
+ pWin->drawable.height, 0, 0);
+ break;
+
+ case XdbeCopied:
+ break;
+
+ }
+
+ /*
+ **********************************************************************
+ ** Swap.
+ **********************************************************************
+ */
+
+ ValidateGC((DrawablePtr) pWin, pGC);
+ (*pGC->ops->CopyArea) ((DrawablePtr) pDbeWindowPrivPriv->pBackBuffer,
+ (DrawablePtr) pWin, pGC, 0, 0,
+ pWin->drawable.width, pWin->drawable.height, 0, 0);
+
+ /*
+ **********************************************************************
+ ** Tasks after swap.
+ **********************************************************************
+ */
+
+ switch (swapInfo[0].swapAction) {
+ case XdbeUndefined:
+ break;
+
+ case XdbeBackground:
+ if ((*pDbeScreenPriv->SetupBackgroundPainter) (pWin, pGC)) {
+ ValidateGC((DrawablePtr) pDbeWindowPrivPriv->pBackBuffer, pGC);
+ clearRect.x = 0;
+ clearRect.y = 0;
+ clearRect.width = pDbeWindowPrivPriv->pBackBuffer->drawable.width;
+ clearRect.height = pDbeWindowPrivPriv->pBackBuffer->drawable.height;
+ (*pGC->ops->PolyFillRect) ((DrawablePtr) pDbeWindowPrivPriv->
+ pBackBuffer, pGC, 1, &clearRect);
+ }
+ break;
+
+ case XdbeUntouched:
+ /* Swap pixmap pointers. */
+ pTmpBuffer = pDbeWindowPrivPriv->pBackBuffer;
+ pDbeWindowPrivPriv->pBackBuffer = pDbeWindowPrivPriv->pFrontBuffer;
+ pDbeWindowPrivPriv->pFrontBuffer = pTmpBuffer;
+
+ miDbeAliasBuffers(pDbeWindowPrivPriv->pDbeWindowPriv);
+
+ break;
+
+ case XdbeCopied:
+ break;
+
+ }
+
+ /* Remove the swapped window from the swap information array and decrement
+ * pNumWindows to indicate to the DIX level how many windows were actually
+ * swapped.
+ */
+
+ if (*pNumWindows > 1) {
+ /* We were told to swap more than one window, but we only swapped the
+ * first one. Remove the first window in the list by moving the last
+ * window to the beginning.
+ */
+ swapInfo[0].pWindow = swapInfo[*pNumWindows - 1].pWindow;
+ swapInfo[0].swapAction = swapInfo[*pNumWindows - 1].swapAction;
+
+ /* Clear the last window information just to be safe. */
+ swapInfo[*pNumWindows - 1].pWindow = (WindowPtr) NULL;
+ swapInfo[*pNumWindows - 1].swapAction = 0;
+ }
+ else {
+ /* Clear the window information just to be safe. */
+ swapInfo[0].pWindow = (WindowPtr) NULL;
+ swapInfo[0].swapAction = 0;
+ }
+
+ (*pNumWindows)--;
+
+ FreeScratchGC(pGC);
+
+ return Success;
+
+} /* miSwapBuffers() */
+
+/******************************************************************************
+ *
+ * DBE MI Procedure: miDbeWinPrivDelete
+ *
+ * Description:
+ *
+ * This is the MI function for deleting the dbeWindowPrivResType resource.
+ * This function is invoked indirectly by calling FreeResource() to free
+ * the resources associated with a DBE buffer ID. There are 5 ways that
+ * miDbeWinPrivDelete() can be called by FreeResource(). They are:
+ *
+ * - A DBE window is destroyed, in which case the DbeDestroyWindow()
+ * wrapper is invoked. The wrapper calls FreeResource() for all DBE
+ * buffer IDs.
+ *
+ * - miDbeAllocBackBufferName() calls FreeResource() to clean up resources
+ * after a buffer allocation failure.
+ *
+ * - The PositionWindow wrapper, miDbePositionWindow(), calls
+ * FreeResource() when it fails to create buffers of the new size.
+ * FreeResource() is called for all DBE buffer IDs.
+ *
+ * - FreeClientResources() calls FreeResource() when a client dies or the
+ * the server resets.
+ *
+ * When FreeResource() is called for a DBE buffer ID, the delete function
+ * for the only other type of DBE resource, dbeDrawableResType, is also
+ * invoked. This delete function (DbeDrawableDelete) is a NOOP to make
+ * resource deletion easier. It is not guaranteed which delete function is
+ * called first. Hence, we will let miDbeWinPrivDelete() free all DBE
+ * resources.
+ *
+ * This function deletes/frees the following stuff associated with
+ * the window private:
+ *
+ * - the ID node in the ID list representing the passed in ID.
+ *
+ * In addition, pDbeWindowPriv->nBufferIDs is decremented.
+ *
+ * If this function is called for the last/only buffer ID for a window,
+ * these are additionally deleted/freed:
+ *
+ * - the front and back pixmaps
+ * - the window priv itself
+ *
+ *****************************************************************************/
+
+static void
+miDbeWinPrivDelete(DbeWindowPrivPtr pDbeWindowPriv, XID bufId)
+{
+ MiDbeWindowPrivPrivPtr pDbeWindowPrivPriv;
+
+ if (pDbeWindowPriv->nBufferIDs != 0) {
+ /* We still have at least one more buffer ID associated with this
+ * window.
+ */
+ return;
+ }
+
+ /* We have no more buffer IDs associated with this window. We need to
+ * free some stuff.
+ */
+
+ pDbeWindowPrivPriv = MI_DBE_WINDOW_PRIV_PRIV(pDbeWindowPriv);
+
+ /* Destroy the front and back pixmaps. */
+ if (pDbeWindowPrivPriv->pFrontBuffer) {
+ (*pDbeWindowPriv->pWindow->drawable.pScreen->
+ DestroyPixmap) (pDbeWindowPrivPriv->pFrontBuffer);
+ }
+ if (pDbeWindowPrivPriv->pBackBuffer) {
+ (*pDbeWindowPriv->pWindow->drawable.pScreen->
+ DestroyPixmap) (pDbeWindowPrivPriv->pBackBuffer);
+ }
+
+} /* miDbeWinPrivDelete() */
+
+/******************************************************************************
+ *
+ * DBE MI Procedure: miDbePositionWindow
+ *
+ * Description:
+ *
+ * This function was cloned from miMbxPositionWindow() in mimultibuf.c.
+ * This function resizes the buffer when the window is resized.
+ *
+ *****************************************************************************/
+
+static Bool
+miDbePositionWindow(WindowPtr pWin, int x, int y)
+{
+ ScreenPtr pScreen;
+ DbeScreenPrivPtr pDbeScreenPriv;
+ DbeWindowPrivPtr pDbeWindowPriv;
+ int width, height;
+ int dx, dy, dw, dh;
+ int sourcex, sourcey;
+ int destx, desty;
+ int savewidth, saveheight;
+ PixmapPtr pFrontBuffer;
+ PixmapPtr pBackBuffer;
+ Bool clear;
+ GCPtr pGC;
+ xRectangle clearRect;
+ Bool ret;
+
+ /*
+ **************************************************************************
+ ** 1. Unwrap the member routine.
+ **************************************************************************
+ */
+
+ pScreen = pWin->drawable.pScreen;
+ pDbeScreenPriv = DBE_SCREEN_PRIV(pScreen);
+ pScreen->PositionWindow = pDbeScreenPriv->PositionWindow;
+
+ /*
+ **************************************************************************
+ ** 2. Do any work necessary before the member routine is called.
+ **
+ ** In this case we do not need to do anything.
+ **************************************************************************
+ */
+
+ /*
+ **************************************************************************
+ ** 3. Call the member routine, saving its result if necessary.
+ **************************************************************************
+ */
+
+ ret = (*pScreen->PositionWindow) (pWin, x, y);
+
+ /*
+ **************************************************************************
+ ** 4. Rewrap the member routine, restoring the wrapper value first in case
+ ** the wrapper (or something that it wrapped) change this value.
+ **************************************************************************
+ */
+
+ pDbeScreenPriv->PositionWindow = pScreen->PositionWindow;
+ pScreen->PositionWindow = miDbePositionWindow;
+
+ /*
+ **************************************************************************
+ ** 5. Do any work necessary after the member routine has been called.
+ **************************************************************************
+ */
+
+ if (!(pDbeWindowPriv = DBE_WINDOW_PRIV(pWin))) {
+ return ret;
+ }
+
+ if (pDbeWindowPriv->width == pWin->drawable.width &&
+ pDbeWindowPriv->height == pWin->drawable.height) {
+ return ret;
+ }
+
+ width = pWin->drawable.width;
+ height = pWin->drawable.height;
+
+ dx = pWin->drawable.x - pDbeWindowPriv->x;
+ dy = pWin->drawable.y - pDbeWindowPriv->y;
+ dw = width - pDbeWindowPriv->width;
+ dh = height - pDbeWindowPriv->height;
+
+ GravityTranslate(0, 0, -dx, -dy, dw, dh, pWin->bitGravity, &destx, &desty);
+
+ clear = ((pDbeWindowPriv->width < (unsigned short) width) ||
+ (pDbeWindowPriv->height < (unsigned short) height) ||
+ (pWin->bitGravity == ForgetGravity));
+
+ sourcex = 0;
+ sourcey = 0;
+ savewidth = pDbeWindowPriv->width;
+ saveheight = pDbeWindowPriv->height;
+
+ /* Clip rectangle to source and destination. */
+ if (destx < 0) {
+ savewidth += destx;
+ sourcex -= destx;
+ destx = 0;
+ }
+
+ if (destx + savewidth > width) {
+ savewidth = width - destx;
+ }
+
+ if (desty < 0) {
+ saveheight += desty;
+ sourcey -= desty;
+ desty = 0;
+ }
+
+ if (desty + saveheight > height) {
+ saveheight = height - desty;
+ }
+
+ pDbeWindowPriv->width = width;
+ pDbeWindowPriv->height = height;
+ pDbeWindowPriv->x = pWin->drawable.x;
+ pDbeWindowPriv->y = pWin->drawable.y;
+
+ pGC = GetScratchGC(pWin->drawable.depth, pScreen);
+
+ if (clear) {
+ if ((*pDbeScreenPriv->SetupBackgroundPainter) (pWin, pGC)) {
+ clearRect.x = 0;
+ clearRect.y = 0;
+ clearRect.width = width;
+ clearRect.height = height;
+ }
+ else {
+ clear = FALSE;
+ }
+ }
+
+ /* Create DBE buffer pixmaps equal to size of resized window. */
+ pFrontBuffer = (*pScreen->CreatePixmap) (pScreen, width, height,
+ pWin->drawable.depth, 0);
+
+ pBackBuffer = (*pScreen->CreatePixmap) (pScreen, width, height,
+ pWin->drawable.depth, 0);
+
+ if (!pFrontBuffer || !pBackBuffer) {
+ /* We failed at creating 1 or 2 of the pixmaps. */
+
+ if (pFrontBuffer) {
+ (*pScreen->DestroyPixmap) (pFrontBuffer);
+ }
+
+ if (pBackBuffer) {
+ (*pScreen->DestroyPixmap) (pBackBuffer);
+ }
+
+ /* Destroy all buffers for this window. */
+ while (pDbeWindowPriv) {
+ /* DbeWindowPrivDelete() will free the window private if there no
+ * more buffer IDs associated with this window.
+ */
+ FreeResource(pDbeWindowPriv->IDs[0], RT_NONE);
+ pDbeWindowPriv = DBE_WINDOW_PRIV(pWin);
+ }
+
+ FreeScratchGC(pGC);
+ return FALSE;
+ }
+
+ else {
+ /* Clear out the new DBE buffer pixmaps. */
+
+ MiDbeWindowPrivPrivPtr pDbeWindowPrivPriv;
+
+ pDbeWindowPrivPriv = MI_DBE_WINDOW_PRIV_PRIV(pDbeWindowPriv);
+
+ /* I suppose this could avoid quite a bit of work if
+ * it computed the minimal area required.
+ */
+ ValidateGC(&pFrontBuffer->drawable, pGC);
+ if (clear) {
+ (*pGC->ops->PolyFillRect) ((DrawablePtr) pFrontBuffer, pGC, 1,
+ &clearRect);
+ }
+ /* Copy the contents of the old front pixmap to the new one. */
+ if (pWin->bitGravity != ForgetGravity) {
+ (*pGC->ops->CopyArea) ((DrawablePtr) pDbeWindowPrivPriv->
+ pFrontBuffer, (DrawablePtr) pFrontBuffer,
+ pGC, sourcex, sourcey, savewidth, saveheight,
+ destx, desty);
+ }
+
+ ValidateGC(&pBackBuffer->drawable, pGC);
+ if (clear) {
+ (*pGC->ops->PolyFillRect) ((DrawablePtr) pBackBuffer, pGC, 1,
+ &clearRect);
+ }
+ /* Copy the contents of the old back pixmap to the new one. */
+ if (pWin->bitGravity != ForgetGravity) {
+ (*pGC->ops->CopyArea) ((DrawablePtr) pDbeWindowPrivPriv->
+ pBackBuffer, (DrawablePtr) pBackBuffer, pGC,
+ sourcex, sourcey, savewidth, saveheight,
+ destx, desty);
+ }
+
+ /* Destroy the old pixmaps, and point the DBE window priv to the new
+ * pixmaps.
+ */
+
+ (*pScreen->DestroyPixmap) (pDbeWindowPrivPriv->pFrontBuffer);
+ (*pScreen->DestroyPixmap) (pDbeWindowPrivPriv->pBackBuffer);
+
+ pDbeWindowPrivPriv->pFrontBuffer = pFrontBuffer;
+ pDbeWindowPrivPriv->pBackBuffer = pBackBuffer;
+
+ /* Make sure all XID are associated with the new back pixmap. */
+ miDbeAliasBuffers(pDbeWindowPriv);
+
+ FreeScratchGC(pGC);
+ }
+
+ return ret;
+
+} /* miDbePositionWindow() */
+
+/******************************************************************************
+ *
+ * DBE MI Procedure: miDbeResetProc
+ *
+ * Description:
+ *
+ * This function is called from DbeResetProc(), which is called at the end
+ * of every server generation. This function peforms any MI-specific
+ * shutdown tasks.
+ *
+ *****************************************************************************/
+
+static void
+miDbeResetProc(ScreenPtr pScreen)
+{
+ DbeScreenPrivPtr pDbeScreenPriv;
+
+ pDbeScreenPriv = DBE_SCREEN_PRIV(pScreen);
+
+ /* Unwrap wrappers */
+ pScreen->PositionWindow = pDbeScreenPriv->PositionWindow;
+
+} /* miDbeResetProc() */
+
+/******************************************************************************
+ *
+ * DBE MI Procedure: miDbeInit
+ *
+ * Description:
+ *
+ * This is the MI initialization function called by DbeExtensionInit().
+ *
+ *****************************************************************************/
+
+Bool
+miDbeInit(ScreenPtr pScreen, DbeScreenPrivPtr pDbeScreenPriv)
+{
+ if (!dixRegisterPrivateKey(&miDbeWindowPrivPrivKeyRec, PRIVATE_DBE_WINDOW,
+ sizeof(MiDbeWindowPrivPrivRec)))
+ return FALSE;
+
+ /* Wrap functions. */
+ pDbeScreenPriv->PositionWindow = pScreen->PositionWindow;
+ pScreen->PositionWindow = miDbePositionWindow;
+
+ /* Initialize the per-screen DBE function pointers. */
+ pDbeScreenPriv->GetVisualInfo = miDbeGetVisualInfo;
+ pDbeScreenPriv->AllocBackBufferName = miDbeAllocBackBufferName;
+ pDbeScreenPriv->SwapBuffers = miDbeSwapBuffers;
+ pDbeScreenPriv->BeginIdiom = 0;
+ pDbeScreenPriv->EndIdiom = 0;
+ pDbeScreenPriv->ResetProc = miDbeResetProc;
+ pDbeScreenPriv->WinPrivDelete = miDbeWinPrivDelete;
+
+ return TRUE;
+
+} /* miDbeInit() */
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-29 16:42:00 +0000