-/************************************************************
-
-Copyright (c) 1989 X Consortium
-
-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 THE
-X CONSORTIUM 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 X Consortium 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 X Consortium.
-
-********************************************************/
-
-/* $XConsortium: mbufpx.c,v 1.5 94/04/17 20:32:54 dpw Exp $ */
-/* $XFree86: xc/programs/Xserver/Xext/mbufpx.c,v 3.0 1994/05/08 05:17:32 dawes Exp $ */
-#define NEED_REPLIES
-#define NEED_EVENTS
-#include <stdio.h>
-#include "X.h"
-#include "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 "regionstr.h"
-#include "gcstruct.h"
-#include "inputstr.h"
-#ifndef MINIX
-#include <sys/time.h>
-#endif
-
-#define _MULTIBUF_SERVER_ /* don't want Xlib structures */
-#define _MULTIBUF_PIXMAP_
-#include "multibufst.h"
-
-
-static Bool NoopDDA_True() { return TRUE; }
-
-static Bool pixPositionWindow();
-static int pixCreateImageBuffers();
-static void pixDisplayImageBuffers();
-static void pixClearImageBufferArea();
-static void pixDeleteBufferDrawable();
-static void pixWrapScreenFuncs();
-static void pixResetProc();
-
-Bool
-pixMultibufferInit(pScreen, pMBScreen)
- ScreenPtr pScreen;
- mbufScreenPtr pMBScreen;
-{
- int i, j, k;
- xMbufBufferInfo *pInfo;
- int nInfo;
- DepthPtr pDepth;
- mbufPixmapPrivPtr pMBPriv;
-
- pMBScreen->CreateImageBuffers = pixCreateImageBuffers;
- pMBScreen->DestroyImageBuffers = (void (*)())NoopDDA;
- pMBScreen->DisplayImageBuffers = pixDisplayImageBuffers;
- pMBScreen->ClearImageBufferArea = pixClearImageBufferArea;
- pMBScreen->ChangeMBufferAttributes = NoopDDA_True;
- pMBScreen->ChangeBufferAttributes = NoopDDA_True;
- pMBScreen->DeleteBufferDrawable = pixDeleteBufferDrawable;
- pMBScreen->WrapScreenFuncs = pixWrapScreenFuncs;
- pMBScreen->ResetProc = pixResetProc;
-
- /* Support every depth and visual combination that the screen does */
-
- nInfo = 0;
- for (i = 0; i < pScreen->numDepths; i++)
- {
- pDepth = &pScreen->allowedDepths[i];
- nInfo += pDepth->numVids;
- }
-
- pInfo = (xMbufBufferInfo *) xalloc (nInfo * sizeof (xMbufBufferInfo));
- if (!pInfo)
- return FALSE;
-
- k = 0;
- for (i = 0; i < pScreen->numDepths; i++)
- {
- pDepth = &pScreen->allowedDepths[i];
- for (j = 0; j < pDepth->numVids; j++)
- {
- pInfo[k].visualID = pDepth->vids[j];
- pInfo[k].maxBuffers = 0;
- pInfo[k].depth = pDepth->depth;
- k++;
- }
- }
-
- pMBScreen->nInfo = nInfo;
- pMBScreen->pInfo = pInfo;
-
- /*
- * Setup the devPrivate to mbufScreenRec
- */
-
- pMBPriv = (mbufPixmapPrivPtr) xalloc(sizeof(* pMBPriv));
- if (!pMBPriv)
- {
- xfree(pInfo);
- return (FALSE);
- }
- pMBScreen->devPrivate.ptr = (pointer) pMBPriv;
- pMBPriv->PositionWindow = NULL;
- pMBPriv->funcsWrapped = 0;
-
- return TRUE;
-}
-
-/*ARGSUSED*/
-static int
-pixCreateImageBuffers (pWin, nbuf, ids, action, hint)
- WindowPtr pWin;
- int nbuf;
- XID *ids;
- int action;
- int hint;
-{
- mbufWindowPtr pMBWindow;
- mbufBufferPtr pMBBuffer;
- ScreenPtr pScreen;
- int width, height, depth;
- int i;
-
- pMBWindow = MB_WINDOW_PRIV(pWin);
-
- width = pWin->drawable.width;
- height = pWin->drawable.height;
- depth = pWin->drawable.depth;
- pScreen = pWin->drawable.pScreen;
-
- for (i = 0; i < nbuf; i++)
- {
- pMBBuffer = &pMBWindow->buffers[i];
- pMBBuffer->pDrawable = (DrawablePtr)
- (*pScreen->CreatePixmap) (pScreen, width, height, depth);
- if (!pMBBuffer->pDrawable)
- break;
-
- if (!AddResource (ids[i], MultibufferDrawableResType,
- (pointer) pMBBuffer->pDrawable))
- {
- (*pScreen->DestroyPixmap) ((PixmapPtr) pMBBuffer->pDrawable);
- break;
- }
- pMBBuffer->pDrawable->id = ids[i];
-
- /*
- * In the description of the CreateImageBuffers request:
- * "If the window is mapped, or if these image buffers have
- * backing store, their contents will be tiled with the window
- * background, and zero or more expose events will be generated
- * for each of these buffers."
- */
-
- (* MB_SCREEN_PRIV(pScreen)->ClearImageBufferArea)
- (pMBBuffer, 0,0, 0,0, TRUE);
- }
-
- return i;
-}
-
-/*
- * set up the gc to clear the pixmaps;
- */
-static Bool
-SetupBackgroundPainter (pWin, pGC)
- WindowPtr pWin;
- GCPtr pGC;
-{
- XID 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] = (XID) background.pixel;
- gcvalues[1] = FillSolid;
- gcmask = GCForeground|GCFillStyle;
- break;
-
- case BackgroundPixmap:
- gcvalues[0] = FillTiled;
- gcvalues[1] = (XID) background.pixmap;
- gcvalues[2] = ts_x_origin;
- gcvalues[3] = ts_y_origin;
- gcmask = GCFillStyle|GCTile|GCTileStipXOrigin|GCTileStipYOrigin;
- break;
-
- default:
- return FALSE;
- }
- DoChangeGC(pGC, gcmask, gcvalues, TRUE);
- return TRUE;
-}
-
-static void
-MultibufferPaintBackgroundRectangles(pWin, pDrawable, nrects, pRects)
- WindowPtr pWin;
- DrawablePtr pDrawable;
- int nrects;
- xRectangle *pRects;
-{
- GCPtr pGC;
-
- pGC = GetScratchGC (pWin->drawable.depth, pWin->drawable.pScreen);
- if (SetupBackgroundPainter(pWin, pGC))
- {
- ValidateGC(pDrawable, pGC);
- (*pGC->ops->PolyFillRect) (pDrawable, pGC, nrects, pRects);
- }
- FreeScratchGC(pGC);
-}
-
-static void
-MultibufferPaintBackgroundRegion(pWin, pDrawable, pRegion)
- WindowPtr pWin;
- DrawablePtr pDrawable;
- RegionPtr pRegion;
-{
- xRectangle *pRects;
- int nrects = REGION_NUM_RECTS(pRegion);
- BoxPtr pbox = REGION_RECTS(pRegion);
-
- pRects = (xRectangle *)ALLOCATE_LOCAL(nrects * sizeof(xRectangle));
- if (pRects)
- {
- int i;
- for (i = 0; i < nrects; i++)
- {
- pRects[i].x = pbox->x1;
- pRects[i].y = pbox->y1;
- pRects[i].width = pbox->x2 - pbox->x1;
- pRects[i].height = pbox->y2 - pbox->y1;
- }
- MultibufferPaintBackgroundRectangles(pWin, pDrawable, nrects, pRects);
- DEALLOCATE_LOCAL(pRects);
- }
-}
-
-static void
-pixDisplayImageBuffers(pScreen, ppMBWindow, ppMBBuffer, nbuf)
- mbufBufferPtr *ppMBBuffer;
- mbufWindowPtr *ppMBWindow;
- int nbuf;
-{
- GCPtr pGC = NULL;
- PixmapPtr pPrevPixmap, pNewPixmap;
- WindowPtr pWin;
- RegionPtr pExposed;
- int i;
- mbufBufferPtr pPrevMBBuffer;
- XID bool;
- xRectangle r;
-
- UpdateCurrentTime ();
- for (i = 0; i < nbuf; i++)
- {
- pWin = ppMBWindow[i]->pWindow;
-
- /* Time to get a different scratch GC? */
-
- if (!pGC
- || pGC->depth != pWin->drawable.depth
- || pGC->pScreen != pWin->drawable.pScreen)
- {
- if (pGC) FreeScratchGC(pGC);
- pGC = GetScratchGC (pWin->drawable.depth, pWin->drawable.pScreen);
- }
- pPrevMBBuffer = MB_DISPLAYED_BUFFER(ppMBWindow[i]);
- pPrevPixmap = (PixmapPtr) pPrevMBBuffer->pDrawable;
- pNewPixmap = (PixmapPtr) ppMBBuffer[i]->pDrawable;
-
- if (pPrevPixmap == pNewPixmap)
- {
- /* "If a specified buffer is already displayed, any delays and
- * update action will still be performed for that buffer."
- *
- * We special-case this because applications do occasionally
- * request a redundant DisplayImageBuffers, and we can save
- * strokes by recognizing that the only update action that will
- * change the buffer contents in this case is Background.
- */
- if (ppMBWindow[i]->updateAction == MultibufferUpdateActionBackground)
- {
- r.x = r.y = 0;
- r.width = pWin->drawable.width;
- r.height = pWin->drawable.height;
- MultibufferPaintBackgroundRectangles(pWin, (DrawablePtr)pWin,
- 1, &r);
- }
- }
- else /* different buffer is being displayed */
- {
- /* perform update action */
-
- switch (ppMBWindow[i]->updateAction)
- {
- case MultibufferUpdateActionUndefined:
- break;
-
- case MultibufferUpdateActionBackground:
-
- r.x = r.y = 0;
- r.width = pPrevPixmap->drawable.width;
- r.height = pPrevPixmap->drawable.height;
- MultibufferPaintBackgroundRectangles(pWin,
- (DrawablePtr)pPrevPixmap,
- 1, &r);
- break;
-
- case MultibufferUpdateActionUntouched:
-
- /* copy the window to the pixmap that represents the
- * currently displayed buffer
- */
-
- if (pPrevMBBuffer->eventMask & ExposureMask)
- {
- bool = TRUE;
- DoChangeGC (pGC, GCGraphicsExposures, &bool, FALSE);
- }
- ValidateGC ((DrawablePtr)pPrevPixmap, pGC);
- pExposed = (*pGC->ops->CopyArea)((DrawablePtr) pWin,
- (DrawablePtr) pPrevPixmap,
- pGC,
- 0, 0,
- pWin->drawable.width,
- pWin->drawable.height,
- 0, 0);
-
- /* if we couldn't copy the whole window to the buffer,
- * send expose events (if any client wants them)
- */
-
- if (pPrevMBBuffer->eventMask & ExposureMask)
- { /* some client wants expose events */
- if (pExposed)
- {
- RegionPtr pWinSize;
- extern RegionPtr CreateUnclippedWinSize();
- ScreenPtr pScreen = pWin->drawable.pScreen;
- pWinSize = CreateUnclippedWinSize (pWin);
- /*
- * pExposed is window-relative, but at this point
- * pWinSize is screen-relative. Make pWinSize be
- * window-relative so that region ops involving
- * pExposed and pWinSize behave sensibly.
- */
- REGION_TRANSLATE(pScreen, pWinSize,
- -pWin->drawable.x,
- -pWin->drawable.y);
- REGION_INTERSECT(pScreen, pExposed, pExposed, pWinSize);
- REGION_DESTROY(pScreen, pWinSize);
- MultibufferExpose (pPrevMBBuffer, pExposed);
- REGION_DESTROY(pScreen, pExposed);
- }
- bool = FALSE;
- DoChangeGC (pGC, GCGraphicsExposures, &bool, FALSE);
- } /* end some client wants expose events */
-
- break; /* end case MultibufferUpdateActionUntouched */
-
- case MultibufferUpdateActionCopied:
-
- ValidateGC ((DrawablePtr)pPrevPixmap, pGC);
- (*pGC->ops->CopyArea) ((DrawablePtr)pNewPixmap,
- (DrawablePtr)pPrevPixmap, pGC,
- 0, 0, pWin->drawable.width,
- pWin->drawable.height, 0, 0);
- break;
-
- } /* end switch on update action */
-
- /* display the new buffer */
-
- ValidateGC ((DrawablePtr)pWin, pGC);
- (*pGC->ops->CopyArea) ((DrawablePtr)pNewPixmap, (DrawablePtr)pWin,
- pGC, 0, 0,
- pWin->drawable.width, pWin->drawable.height,
- 0, 0);
- }
-
- ppMBWindow[i]->lastUpdate = currentTime;
- }
-
- if (pGC) FreeScratchGC (pGC);
- return;
-}
-
-/*
- * resize the buffers when the window is resized
- */
-
-static Bool
-pixPositionWindow (pWin, x, y)
- WindowPtr pWin;
- int x, y;
-{
- ScreenPtr pScreen;
- mbufPixmapPrivPtr pMBPriv;
- mbufWindowPtr pMBWindow;
- mbufBufferPtr pMBBuffer;
- int width, height;
- int i;
- int dx, dy, dw, dh;
- int sourcex, sourcey;
- int destx, desty;
- PixmapPtr pPixmap;
- GCPtr pGC;
- int savewidth, saveheight;
- Bool clear;
- RegionRec exposedRegion;
- Bool ret;
-
- pScreen = pWin->drawable.pScreen;
- pMBPriv = MB_SCREEN_PRIV_PIXMAP(pScreen);
-
- UNWRAP_SCREEN_FUNC(pScreen, pMBPriv, Bool, PositionWindow);
- ret = (* pScreen->PositionWindow) (pWin, x, y);
- REWRAP_SCREEN_FUNC(pScreen, pMBPriv, Bool, PositionWindow);
-
- if (!(pMBWindow = MB_WINDOW_PRIV(pWin)))
- return ret;
-
- /* if new size is same as old, we're done */
-
- if (pMBWindow->width == pWin->drawable.width &&
- pMBWindow->height == pWin->drawable.height)
- return ret;
-
- width = pWin->drawable.width;
- height = pWin->drawable.height;
- dx = pWin->drawable.x - pMBWindow->x;
- dy = pWin->drawable.x - pMBWindow->y;
- dw = width - pMBWindow->width;
- dh = height - pMBWindow->height;
- GravityTranslate (0, 0, -dx, -dy, dw, dh,
- pWin->bitGravity, &destx, &desty);
-
- /* if the window grew, remember to paint the window background,
- * and maybe send expose events, for the new areas of the buffers
- */
-
- clear = pMBWindow->width < width || pMBWindow->height < height ||
- pWin->bitGravity == ForgetGravity;
-
- sourcex = 0;
- sourcey = 0;
- savewidth = pMBWindow->width;
- saveheight = pMBWindow->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;
-
- pMBWindow->width = width;
- pMBWindow->height = height;
- pMBWindow->x = pWin->drawable.x;
- pMBWindow->y = pWin->drawable.y;
-
- if (clear)
- {
- BoxRec box;
-
- box.x1 = box.y1 = 0;
- box.x2 = width;
- box.y2 = height;
- REGION_INIT(pScreen, &exposedRegion, &box, 1);
- if (pWin->bitGravity != ForgetGravity)
- {
- RegionRec preservedRegion;
- box.x1 = destx;
- box.y1 = desty;
- box.x2 = destx + savewidth;
- box.y2 = desty + saveheight;
- REGION_INIT(pScreen, &preservedRegion, &box, 1);
- REGION_SUBTRACT(pScreen, &exposedRegion, &exposedRegion, &preservedRegion);
- REGION_UNINIT(pScreen, &preservedRegion);
- }
-
- } /* end if (clear) */
-
- pGC = GetScratchGC (pWin->drawable.depth, pScreen);
-
- /* create buffers with new window size */
-
- for (i = 0; i < pMBWindow->numMultibuffer; i++)
- {
- pMBBuffer = &pMBWindow->buffers[i];
- pPixmap = (*pScreen->CreatePixmap) (pScreen, width, height, pWin->drawable.depth);
- if (!pPixmap)
- {
- (* MB_SCREEN_PRIV(pScreen)->DestroyImageBuffers)(pWin);
- break;
- }
- if (clear)
- {
- MultibufferPaintBackgroundRegion(pWin, (DrawablePtr)pPixmap, &exposedRegion);
- MultibufferExpose(pMBBuffer, &exposedRegion);
- }
- if (pWin->bitGravity != ForgetGravity)
- {
- ValidateGC ((DrawablePtr)pPixmap, pGC);
- (*pGC->ops->CopyArea) (pMBBuffer->pDrawable, (DrawablePtr)pPixmap,
- pGC,
- sourcex, sourcey, savewidth, saveheight,
- destx, desty);
- }
- pPixmap->drawable.id = pMBBuffer->pDrawable->id;
- (*pScreen->DestroyPixmap) ((PixmapPtr) pMBBuffer->pDrawable);
- pMBBuffer->pDrawable = (DrawablePtr) pPixmap;
- if (i != pMBWindow->displayedMultibuffer)
- {
- ChangeResourceValue (pPixmap->drawable.id,
- MultibufferDrawableResType,
- (pointer) pPixmap);
- }
- }
- FreeScratchGC (pGC);
- if (clear)
- REGION_UNINIT(pScreen, &exposedRegion);
- return TRUE;
-}
-
-static void
-pixWrapScreenFuncs(pScreen)
- ScreenPtr pScreen;
-{
- mbufPixmapPrivPtr pMBPriv = MB_SCREEN_PRIV_PIXMAP(pScreen);
- WRAP_SCREEN_FUNC(pScreen, pMBPriv, PositionWindow, pixPositionWindow);
-}
-
-static void
-pixResetProc(pScreen)
- ScreenPtr pScreen;
-{
- mbufScreenPtr pMBScreen = MB_SCREEN_PRIV(pScreen);
- mbufPixmapPrivPtr pMBPriv = MB_SCREEN_PRIV_PIXMAP(pScreen);
-
- xfree(pMBScreen->pInfo);
- xfree(pMBPriv);
-}
-
-static void
-pixClearImageBufferArea(pMBBuffer, x,y, width,height, exposures)
- mbufBufferPtr pMBBuffer;
- short x, y;
- unsigned short width, height;
- Bool exposures;
-{
- WindowPtr pWin;
- ScreenPtr pScreen;
- BoxRec box;
- RegionRec region;
- int w_width, w_height;
- DrawablePtr pDrawable;
-
- pWin = pMBBuffer->pMBWindow->pWindow;
- pScreen = pWin->drawable.pScreen;
-
- w_width = pWin->drawable.width;
- w_height = pWin->drawable.height;
-
- box.x1 = x;
- box.y1 = y;
- box.x2 = width ? (box.x1 + width) : w_width;
- box.y2 = height ? (box.y1 + height) : w_height;
-
- if (box.x1 < 0) box.x1 = 0;
- if (box.y1 < 0) box.y1 = 0;
- if (box.x2 > w_width) box.x2 = w_width;
- if (box.y2 > w_height) box.y2 = w_height;
-
- REGION_INIT(pScreen, ®ion, &box, 1);
-
- if (pMBBuffer->number == pMBBuffer->pMBWindow->displayedMultibuffer)
- pDrawable = (DrawablePtr) pWin;
- else
- pDrawable = pMBBuffer->pDrawable;
-
- MultibufferPaintBackgroundRegion(pWin, pDrawable, ®ion);
-
- if (exposures)
- MultibufferExpose(pMBBuffer, ®ion);
-
- REGION_UNINIT(pScreen, ®ion);
-}
-
-static void
-pixDeleteBufferDrawable(pDrawable)
- DrawablePtr pDrawable;
-{
- (* pDrawable->pScreen->DestroyPixmap)((PixmapPtr) pDrawable);
-}
projects / rdpsrv / blobdiff