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authormarha <marha@users.sourceforge.net>2012-03-23 10:05:55 +0100
committermarha <marha@users.sourceforge.net>2012-03-23 10:05:55 +0100
commit0f834b91a4768673833ab4917e87d86c237bb1a6 (patch)
tree363489504ed4b2d360259b8de4c9e392918e5d02 /xorg-server/miext/cw/cw.c
parentfc72edebf875378459368c5383d9023730cbca54 (diff)
downloadvcxsrv-0f834b91a4768673833ab4917e87d86c237bb1a6.tar.gz
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libX11 xserver fontconfig mesa pixman xkbcomp xkeyboard-config git update
23 Mar 2012
Diffstat (limited to 'xorg-server/miext/cw/cw.c')
-rw-r--r--xorg-server/miext/cw/cw.c1051
1 files changed, 524 insertions, 527 deletions
diff --git a/xorg-server/miext/cw/cw.c b/xorg-server/miext/cw/cw.c
index db06209d9..87ced2f6a 100644
--- a/xorg-server/miext/cw/cw.c
+++ b/xorg-server/miext/cw/cw.c
@@ -1,527 +1,524 @@
-/*
- * Copyright © 2004 Eric Anholt
- *
- * Permission to use, copy, modify, distribute, and sell this software and its
- * documentation for any purpose is hereby granted without fee, provided that
- * the above copyright notice appear in all copies and that both that
- * copyright notice and this permission notice appear in supporting
- * documentation, and that the name of Eric Anholt not be used in
- * advertising or publicity pertaining to distribution of the software without
- * specific, written prior permission. Eric Anholt makes no
- * representations about the suitability of this software for any purpose. It
- * is provided "as is" without express or implied warranty.
- *
- * ERIC ANHOLT DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
- * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
- * EVENT SHALL ERIC ANHOLT BE LIABLE FOR ANY SPECIAL, INDIRECT OR
- * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
- * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
- * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
- * PERFORMANCE OF THIS SOFTWARE.
- */
-
-#ifdef HAVE_DIX_CONFIG_H
-#include <dix-config.h>
-#endif
-
-#include <string.h>
-
-#include "gcstruct.h"
-#include "windowstr.h"
-#include "cw.h"
-
-#define CW_DEBUG 1
-
-#if CW_DEBUG
-#define CW_ASSERT(x) do { \
- if (!(x)) { \
- ErrorF("composite wrapper: assertion failed at %s:%d\n", __FUNC__, \
- __LINE__); \
- } \
-} while (0)
-#else
-#define CW_ASSERT(x) do {} while (0)
-#endif
-
-DevPrivateKeyRec cwGCKeyRec;
-DevPrivateKeyRec cwScreenKeyRec;
-DevPrivateKeyRec cwWindowKeyRec;
-DevPrivateKeyRec cwPictureKeyRec;
-
-extern GCOps cwGCOps;
-
-static Bool
-cwCloseScreen (int i, ScreenPtr pScreen);
-
-static void
-cwValidateGC(GCPtr pGC, unsigned long stateChanges, DrawablePtr pDrawable);
-static void
-cwChangeGC(GCPtr pGC, unsigned long mask);
-static void
-cwCopyGC(GCPtr pGCSrc, unsigned long mask, GCPtr pGCDst);
-static void
-cwDestroyGC(GCPtr pGC);
-static void
-cwChangeClip(GCPtr pGC, int type, pointer pvalue, int nrects);
-static void
-cwCopyClip(GCPtr pgcDst, GCPtr pgcSrc);
-static void
-cwDestroyClip(GCPtr pGC);
-
-GCFuncs cwGCFuncs = {
- cwValidateGC,
- cwChangeGC,
- cwCopyGC,
- cwDestroyGC,
- cwChangeClip,
- cwDestroyClip,
- cwCopyClip,
-};
-
-/* Find the real drawable to draw to, and provide offsets that will translate
- * window coordinates to backing pixmap coordinates.
- */
-DrawablePtr
-cwGetBackingDrawable(DrawablePtr pDrawable, int *x_off, int *y_off)
-{
- PixmapPtr pPixmap;
-
- if (pDrawable->type == DRAWABLE_WINDOW &&
- (pPixmap = getCwPixmap ((WindowPtr) pDrawable)))
- {
- *x_off = pDrawable->x - pPixmap->screen_x;
- *y_off = pDrawable->y - pPixmap->screen_y;
- return &pPixmap->drawable;
- } else {
- *x_off = *y_off = 0;
- return pDrawable;
- }
-}
-
-#define FUNC_PROLOGUE(pGC, pPriv) do { \
- (pGC)->funcs = (pPriv)->wrapFuncs; \
- (pGC)->ops = (pPriv)->wrapOps; \
-} while (0)
-
-#define FUNC_EPILOGUE(pGC, pPriv) do { \
- (pPriv)->wrapFuncs = (pGC)->funcs; \
- (pPriv)->wrapOps = (pGC)->ops; \
- (pGC)->funcs = &cwGCFuncs; \
- (pGC)->ops = &cwGCOps; \
-} while (0)
-
-
-static Bool
-cwCreateBackingGC(GCPtr pGC, DrawablePtr pDrawable)
-{
- cwGCRec *pPriv = getCwGC(pGC);
- int status, x_off, y_off;
- XID noexpose = xFalse;
- DrawablePtr pBackingDrawable;
-
- pBackingDrawable = cwGetBackingDrawable(pDrawable, &x_off, &y_off);
- pPriv->pBackingGC = CreateGC(pBackingDrawable, GCGraphicsExposures,
- &noexpose, &status, (XID)0, serverClient);
- if (status != Success)
- return FALSE;
-
- pPriv->serialNumber = 0;
- pPriv->stateChanges = GCAllBits;
-
- return TRUE;
-}
-
-static void
-cwDestroyBackingGC(GCPtr pGC)
-{
- cwGCPtr pPriv;
-
- pPriv = (cwGCPtr) getCwGC (pGC);
-
- if (pPriv->pBackingGC) {
- FreeGC(pPriv->pBackingGC, (XID)0);
- pPriv->pBackingGC = NULL;
- }
-}
-
-static void
-cwValidateGC(GCPtr pGC, unsigned long stateChanges, DrawablePtr pDrawable)
-{
- GCPtr pBackingGC;
- cwGCPtr pPriv;
- DrawablePtr pBackingDrawable;
- int x_off, y_off;
-
- pPriv = (cwGCPtr) getCwGC (pGC);
-
- FUNC_PROLOGUE(pGC, pPriv);
-
- /*
- * Must call ValidateGC to ensure pGC->pCompositeClip is valid
- */
- (*pGC->funcs->ValidateGC)(pGC, stateChanges, pDrawable);
-
- if (!cwDrawableIsRedirWindow(pDrawable)) {
- cwDestroyBackingGC(pGC);
- FUNC_EPILOGUE(pGC, pPriv);
- return;
- } else {
- if (!pPriv->pBackingGC && !cwCreateBackingGC(pGC, pDrawable)) {
- FUNC_EPILOGUE(pGC, pPriv);
- return;
- }
- }
-
- pBackingGC = pPriv->pBackingGC;
- pBackingDrawable = cwGetBackingDrawable(pDrawable, &x_off, &y_off);
-
- pPriv->stateChanges |= stateChanges;
-
- /*
- * Copy the composite clip into the backing GC if either
- * the drawable clip list has changed or the client has changed
- * the client clip data
- */
- if (pDrawable->serialNumber != pPriv->serialNumber ||
- (pPriv->stateChanges & (GCClipXOrigin|GCClipYOrigin|GCClipMask)))
- {
- ChangeGCVal vals[2];
- RegionPtr pCompositeClip;
-
- pCompositeClip = RegionCreate(NULL, 0);
- RegionCopy(pCompositeClip, pGC->pCompositeClip);
-
- /* Either the drawable has changed, or the clip list in the drawable has
- * changed. Copy the new clip list over and set the new translated
- * offset for it.
- */
-
- (*pBackingGC->funcs->ChangeClip) (pBackingGC, CT_REGION,
- (pointer) pCompositeClip, 0);
-
- vals[0].val = x_off - pDrawable->x;
- vals[1].val = y_off - pDrawable->y;
- ChangeGC(NullClient, pBackingGC,
- (GCClipXOrigin | GCClipYOrigin), vals);
-
- pPriv->serialNumber = pDrawable->serialNumber;
- /*
- * Mask off any client clip changes to make sure
- * the clip list set above remains in effect
- */
- pPriv->stateChanges &= ~(GCClipXOrigin|GCClipYOrigin|GCClipMask);
- }
-
- if (pPriv->stateChanges) {
- CopyGC(pGC, pBackingGC, pPriv->stateChanges);
- pPriv->stateChanges = 0;
- }
-
- if ((pGC->patOrg.x + x_off) != pBackingGC->patOrg.x ||
- (pGC->patOrg.y + y_off) != pBackingGC->patOrg.y)
- {
- ChangeGCVal vals[2];
- vals[0].val = pGC->patOrg.x + x_off;
- vals[1].val = pGC->patOrg.y + y_off;
- ChangeGC(NullClient, pBackingGC,
- (GCTileStipXOrigin | GCTileStipYOrigin), vals);
- }
-
- ValidateGC(pBackingDrawable, pBackingGC);
-
- FUNC_EPILOGUE(pGC, pPriv);
-}
-
-static void
-cwChangeGC(GCPtr pGC, unsigned long mask)
-{
- cwGCPtr pPriv = (cwGCPtr)dixLookupPrivate(&pGC->devPrivates, cwGCKey);
-
- FUNC_PROLOGUE(pGC, pPriv);
-
- (*pGC->funcs->ChangeGC) (pGC, mask);
-
- FUNC_EPILOGUE(pGC, pPriv);
-}
-
-static void
-cwCopyGC(GCPtr pGCSrc, unsigned long mask, GCPtr pGCDst)
-{
- cwGCPtr pPriv = (cwGCPtr)dixLookupPrivate(&pGCDst->devPrivates, cwGCKey);
-
- FUNC_PROLOGUE(pGCDst, pPriv);
-
- (*pGCDst->funcs->CopyGC) (pGCSrc, mask, pGCDst);
-
- FUNC_EPILOGUE(pGCDst, pPriv);
-}
-
-static void
-cwDestroyGC(GCPtr pGC)
-{
- cwGCPtr pPriv = (cwGCPtr)dixLookupPrivate(&pGC->devPrivates, cwGCKey);
-
- FUNC_PROLOGUE(pGC, pPriv);
-
- cwDestroyBackingGC(pGC);
-
- (*pGC->funcs->DestroyGC) (pGC);
-
- /* leave it unwrapped */
-}
-
-static void
-cwChangeClip(GCPtr pGC, int type, pointer pvalue, int nrects)
-{
- cwGCPtr pPriv = (cwGCPtr)dixLookupPrivate(&pGC->devPrivates, cwGCKey);
-
- FUNC_PROLOGUE(pGC, pPriv);
-
- (*pGC->funcs->ChangeClip)(pGC, type, pvalue, nrects);
-
- FUNC_EPILOGUE(pGC, pPriv);
-}
-
-static void
-cwCopyClip(GCPtr pgcDst, GCPtr pgcSrc)
-{
- cwGCPtr pPriv = (cwGCPtr)dixLookupPrivate(&pgcDst->devPrivates, cwGCKey);
-
- FUNC_PROLOGUE(pgcDst, pPriv);
-
- (*pgcDst->funcs->CopyClip)(pgcDst, pgcSrc);
-
- FUNC_EPILOGUE(pgcDst, pPriv);
-}
-
-static void
-cwDestroyClip(GCPtr pGC)
-{
- cwGCPtr pPriv = (cwGCPtr)dixLookupPrivate(&pGC->devPrivates, cwGCKey);
-
- FUNC_PROLOGUE(pGC, pPriv);
-
- (*pGC->funcs->DestroyClip)(pGC);
-
- FUNC_EPILOGUE(pGC, pPriv);
-}
-
-/*
- * Screen wrappers.
- */
-
-#define SCREEN_PROLOGUE(pScreen, field) \
- ((pScreen)->field = getCwScreen(pScreen)->field)
-
-#define SCREEN_EPILOGUE(pScreen, field, wrapper) do { \
- getCwScreen(pScreen)->field = (pScreen)->field; \
- (pScreen)->field = (wrapper); \
-} while (0)
-
-static Bool
-cwCreateGC(GCPtr pGC)
-{
- cwGCPtr pPriv = getCwGC(pGC);
- ScreenPtr pScreen = pGC->pScreen;
- Bool ret;
-
- SCREEN_PROLOGUE(pScreen, CreateGC);
-
- if ( (ret = (*pScreen->CreateGC)(pGC)) )
- FUNC_EPILOGUE(pGC, pPriv);
-
- SCREEN_EPILOGUE(pScreen, CreateGC, cwCreateGC);
-
- return ret;
-}
-
-static void
-cwGetImage(DrawablePtr pSrc, int x, int y, int w, int h, unsigned int format,
- unsigned long planemask, char *pdstLine)
-{
- ScreenPtr pScreen = pSrc->pScreen;
- DrawablePtr pBackingDrawable;
- int src_off_x, src_off_y;
-
- SCREEN_PROLOGUE(pScreen, GetImage);
-
- pBackingDrawable = cwGetBackingDrawable(pSrc, &src_off_x, &src_off_y);
-
- CW_OFFSET_XY_SRC(x, y);
-
- (*pScreen->GetImage)(pBackingDrawable, x, y, w, h, format, planemask,
- pdstLine);
-
- SCREEN_EPILOGUE(pScreen, GetImage, cwGetImage);
-}
-
-static void
-cwGetSpans(DrawablePtr pSrc, int wMax, DDXPointPtr ppt, int *pwidth,
- int nspans, char *pdstStart)
-{
- ScreenPtr pScreen = pSrc->pScreen;
- DrawablePtr pBackingDrawable;
- int i;
- int src_off_x, src_off_y;
-
- SCREEN_PROLOGUE(pScreen, GetSpans);
-
- pBackingDrawable = cwGetBackingDrawable(pSrc, &src_off_x, &src_off_y);
-
- for (i = 0; i < nspans; i++)
- CW_OFFSET_XY_SRC(ppt[i].x, ppt[i].y);
-
- (*pScreen->GetSpans)(pBackingDrawable, wMax, ppt, pwidth, nspans,
- pdstStart);
-
- SCREEN_EPILOGUE(pScreen, GetSpans, cwGetSpans);
-}
-
-
-static void
-cwCopyWindow(WindowPtr pWin, DDXPointRec ptOldOrg, RegionPtr prgnSrc)
-{
- ScreenPtr pScreen = pWin->drawable.pScreen;
-
- SCREEN_PROLOGUE(pScreen, CopyWindow);
-
- if (!cwDrawableIsRedirWindow((DrawablePtr)pWin)) {
- (*pScreen->CopyWindow)(pWin, ptOldOrg, prgnSrc);
- } else {
- GCPtr pGC;
- BoxPtr pExtents;
- int x_off, y_off;
- int dx, dy;
- PixmapPtr pBackingPixmap;
- RegionPtr pClip;
- int src_x, src_y, dst_x, dst_y, w, h;
-
- dx = ptOldOrg.x - pWin->drawable.x;
- dy = ptOldOrg.y - pWin->drawable.y;
-
- pExtents = RegionExtents(prgnSrc);
-
- pBackingPixmap = (PixmapPtr) cwGetBackingDrawable((DrawablePtr)pWin,
- &x_off, &y_off);
-
- src_x = pExtents->x1 - pBackingPixmap->screen_x;
- src_y = pExtents->y1 - pBackingPixmap->screen_y;
- w = pExtents->x2 - pExtents->x1;
- h = pExtents->y2 - pExtents->y1;
- dst_x = src_x - dx;
- dst_y = src_y - dy;
-
- /* Translate region (as required by API) */
- RegionTranslate(prgnSrc, -dx, -dy);
-
- pGC = GetScratchGC(pBackingPixmap->drawable.depth, pScreen);
- /*
- * Copy region to GC as clip, aligning as dest clip
- */
- pClip = RegionCreate(NULL, 0);
- RegionIntersect(pClip, &pWin->borderClip, prgnSrc);
- RegionTranslate(pClip,
- -pBackingPixmap->screen_x,
- -pBackingPixmap->screen_y);
-
- (*pGC->funcs->ChangeClip) (pGC, CT_REGION, pClip, 0);
-
- ValidateGC(&pBackingPixmap->drawable, pGC);
-
- (*pGC->ops->CopyArea) (&pBackingPixmap->drawable,
- &pBackingPixmap->drawable, pGC,
- src_x, src_y, w, h, dst_x, dst_y);
-
- (*pGC->funcs->DestroyClip) (pGC);
-
- FreeScratchGC(pGC);
- }
-
- SCREEN_EPILOGUE(pScreen, CopyWindow, cwCopyWindow);
-}
-
-static PixmapPtr
-cwGetWindowPixmap (WindowPtr pWin)
-{
- PixmapPtr pPixmap = getCwPixmap (pWin);
-
- if (!pPixmap)
- {
- ScreenPtr pScreen = pWin->drawable.pScreen;
- SCREEN_PROLOGUE(pScreen, GetWindowPixmap);
- if (pScreen->GetWindowPixmap)
- pPixmap = (*pScreen->GetWindowPixmap) (pWin);
- SCREEN_EPILOGUE(pScreen, GetWindowPixmap, cwGetWindowPixmap);
- }
- return pPixmap;
-}
-
-static void
-cwSetWindowPixmap (WindowPtr pWindow, PixmapPtr pPixmap)
-{
- ScreenPtr pScreen = pWindow->drawable.pScreen;
-
- if (pPixmap == (*pScreen->GetScreenPixmap) (pScreen))
- pPixmap = NULL;
- setCwPixmap (pWindow, pPixmap);
-}
-
-/* Screen initialization/teardown */
-void
-miInitializeCompositeWrapper(ScreenPtr pScreen)
-{
- cwScreenPtr pScreenPriv;
- Bool has_render = GetPictureScreenIfSet(pScreen) != NULL;
-
- if (!dixRegisterPrivateKey(&cwScreenKeyRec, PRIVATE_SCREEN, 0))
- return;
-
- if (!dixRegisterPrivateKey(&cwGCKeyRec, PRIVATE_GC, sizeof(cwGCRec)))
- return;
-
- if (!dixRegisterPrivateKey(&cwWindowKeyRec, PRIVATE_WINDOW, 0))
- return;
-
- if (!dixRegisterPrivateKey(&cwPictureKeyRec, PRIVATE_PICTURE, 0))
- return;
-
- pScreenPriv = malloc(sizeof(cwScreenRec));
- if (!pScreenPriv)
- return;
-
- dixSetPrivate(&pScreen->devPrivates, cwScreenKey, pScreenPriv);
-
- SCREEN_EPILOGUE(pScreen, CloseScreen, cwCloseScreen);
- SCREEN_EPILOGUE(pScreen, GetImage, cwGetImage);
- SCREEN_EPILOGUE(pScreen, GetSpans, cwGetSpans);
- SCREEN_EPILOGUE(pScreen, CreateGC, cwCreateGC);
- SCREEN_EPILOGUE(pScreen, CopyWindow, cwCopyWindow);
-
- SCREEN_EPILOGUE(pScreen, SetWindowPixmap, cwSetWindowPixmap);
- SCREEN_EPILOGUE(pScreen, GetWindowPixmap, cwGetWindowPixmap);
-
- if (has_render)
- cwInitializeRender(pScreen);
-}
-
-static Bool
-cwCloseScreen (int i, ScreenPtr pScreen)
-{
- cwScreenPtr pScreenPriv;
- PictureScreenPtr ps = GetPictureScreenIfSet(pScreen);
-
- pScreenPriv = (cwScreenPtr)dixLookupPrivate(&pScreen->devPrivates,
- cwScreenKey);
- pScreen->CloseScreen = pScreenPriv->CloseScreen;
- pScreen->GetImage = pScreenPriv->GetImage;
- pScreen->GetSpans = pScreenPriv->GetSpans;
- pScreen->CreateGC = pScreenPriv->CreateGC;
- pScreen->CopyWindow = pScreenPriv->CopyWindow;
-
- if (ps)
- cwFiniRender(pScreen);
-
- free((pointer)pScreenPriv);
-
- return (*pScreen->CloseScreen)(i, pScreen);
-}
+/*
+ * Copyright © 2004 Eric Anholt
+ *
+ * Permission to use, copy, modify, distribute, and sell this software and its
+ * documentation for any purpose is hereby granted without fee, provided that
+ * the above copyright notice appear in all copies and that both that
+ * copyright notice and this permission notice appear in supporting
+ * documentation, and that the name of Eric Anholt not be used in
+ * advertising or publicity pertaining to distribution of the software without
+ * specific, written prior permission. Eric Anholt makes no
+ * representations about the suitability of this software for any purpose. It
+ * is provided "as is" without express or implied warranty.
+ *
+ * ERIC ANHOLT DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
+ * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
+ * EVENT SHALL ERIC ANHOLT BE LIABLE FOR ANY SPECIAL, INDIRECT OR
+ * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
+ * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
+ * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
+ * PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#ifdef HAVE_DIX_CONFIG_H
+#include <dix-config.h>
+#endif
+
+#include <string.h>
+
+#include "gcstruct.h"
+#include "windowstr.h"
+#include "cw.h"
+
+#define CW_DEBUG 1
+
+#if CW_DEBUG
+#define CW_ASSERT(x) do { \
+ if (!(x)) { \
+ ErrorF("composite wrapper: assertion failed at %s:%d\n", __FUNC__, \
+ __LINE__); \
+ } \
+} while (0)
+#else
+#define CW_ASSERT(x) do {} while (0)
+#endif
+
+DevPrivateKeyRec cwGCKeyRec;
+DevPrivateKeyRec cwScreenKeyRec;
+DevPrivateKeyRec cwWindowKeyRec;
+DevPrivateKeyRec cwPictureKeyRec;
+
+extern GCOps cwGCOps;
+
+static Bool
+ cwCloseScreen(int i, ScreenPtr pScreen);
+
+static void
+ cwValidateGC(GCPtr pGC, unsigned long stateChanges, DrawablePtr pDrawable);
+static void
+ cwChangeGC(GCPtr pGC, unsigned long mask);
+static void
+ cwCopyGC(GCPtr pGCSrc, unsigned long mask, GCPtr pGCDst);
+static void
+ cwDestroyGC(GCPtr pGC);
+static void
+ cwChangeClip(GCPtr pGC, int type, pointer pvalue, int nrects);
+static void
+ cwCopyClip(GCPtr pgcDst, GCPtr pgcSrc);
+static void
+ cwDestroyClip(GCPtr pGC);
+
+GCFuncs cwGCFuncs = {
+ cwValidateGC,
+ cwChangeGC,
+ cwCopyGC,
+ cwDestroyGC,
+ cwChangeClip,
+ cwDestroyClip,
+ cwCopyClip,
+};
+
+/* Find the real drawable to draw to, and provide offsets that will translate
+ * window coordinates to backing pixmap coordinates.
+ */
+DrawablePtr
+cwGetBackingDrawable(DrawablePtr pDrawable, int *x_off, int *y_off)
+{
+ PixmapPtr pPixmap;
+
+ if (pDrawable->type == DRAWABLE_WINDOW &&
+ (pPixmap = getCwPixmap((WindowPtr) pDrawable))) {
+ *x_off = pDrawable->x - pPixmap->screen_x;
+ *y_off = pDrawable->y - pPixmap->screen_y;
+ return &pPixmap->drawable;
+ }
+ else {
+ *x_off = *y_off = 0;
+ return pDrawable;
+ }
+}
+
+#define FUNC_PROLOGUE(pGC, pPriv) do { \
+ (pGC)->funcs = (pPriv)->wrapFuncs; \
+ (pGC)->ops = (pPriv)->wrapOps; \
+} while (0)
+
+#define FUNC_EPILOGUE(pGC, pPriv) do { \
+ (pPriv)->wrapFuncs = (pGC)->funcs; \
+ (pPriv)->wrapOps = (pGC)->ops; \
+ (pGC)->funcs = &cwGCFuncs; \
+ (pGC)->ops = &cwGCOps; \
+} while (0)
+
+static Bool
+cwCreateBackingGC(GCPtr pGC, DrawablePtr pDrawable)
+{
+ cwGCRec *pPriv = getCwGC(pGC);
+ int status, x_off, y_off;
+ XID noexpose = xFalse;
+ DrawablePtr pBackingDrawable;
+
+ pBackingDrawable = cwGetBackingDrawable(pDrawable, &x_off, &y_off);
+ pPriv->pBackingGC = CreateGC(pBackingDrawable, GCGraphicsExposures,
+ &noexpose, &status, (XID) 0, serverClient);
+ if (status != Success)
+ return FALSE;
+
+ pPriv->serialNumber = 0;
+ pPriv->stateChanges = GCAllBits;
+
+ return TRUE;
+}
+
+static void
+cwDestroyBackingGC(GCPtr pGC)
+{
+ cwGCPtr pPriv;
+
+ pPriv = (cwGCPtr) getCwGC(pGC);
+
+ if (pPriv->pBackingGC) {
+ FreeGC(pPriv->pBackingGC, (XID) 0);
+ pPriv->pBackingGC = NULL;
+ }
+}
+
+static void
+cwValidateGC(GCPtr pGC, unsigned long stateChanges, DrawablePtr pDrawable)
+{
+ GCPtr pBackingGC;
+ cwGCPtr pPriv;
+ DrawablePtr pBackingDrawable;
+ int x_off, y_off;
+
+ pPriv = (cwGCPtr) getCwGC(pGC);
+
+ FUNC_PROLOGUE(pGC, pPriv);
+
+ /*
+ * Must call ValidateGC to ensure pGC->pCompositeClip is valid
+ */
+ (*pGC->funcs->ValidateGC) (pGC, stateChanges, pDrawable);
+
+ if (!cwDrawableIsRedirWindow(pDrawable)) {
+ cwDestroyBackingGC(pGC);
+ FUNC_EPILOGUE(pGC, pPriv);
+ return;
+ }
+ else {
+ if (!pPriv->pBackingGC && !cwCreateBackingGC(pGC, pDrawable)) {
+ FUNC_EPILOGUE(pGC, pPriv);
+ return;
+ }
+ }
+
+ pBackingGC = pPriv->pBackingGC;
+ pBackingDrawable = cwGetBackingDrawable(pDrawable, &x_off, &y_off);
+
+ pPriv->stateChanges |= stateChanges;
+
+ /*
+ * Copy the composite clip into the backing GC if either
+ * the drawable clip list has changed or the client has changed
+ * the client clip data
+ */
+ if (pDrawable->serialNumber != pPriv->serialNumber ||
+ (pPriv->stateChanges & (GCClipXOrigin | GCClipYOrigin | GCClipMask))) {
+ ChangeGCVal vals[2];
+ RegionPtr pCompositeClip;
+
+ pCompositeClip = RegionCreate(NULL, 0);
+ RegionCopy(pCompositeClip, pGC->pCompositeClip);
+
+ /* Either the drawable has changed, or the clip list in the drawable has
+ * changed. Copy the new clip list over and set the new translated
+ * offset for it.
+ */
+
+ (*pBackingGC->funcs->ChangeClip) (pBackingGC, CT_REGION,
+ (pointer) pCompositeClip, 0);
+
+ vals[0].val = x_off - pDrawable->x;
+ vals[1].val = y_off - pDrawable->y;
+ ChangeGC(NullClient, pBackingGC, (GCClipXOrigin | GCClipYOrigin), vals);
+
+ pPriv->serialNumber = pDrawable->serialNumber;
+ /*
+ * Mask off any client clip changes to make sure
+ * the clip list set above remains in effect
+ */
+ pPriv->stateChanges &= ~(GCClipXOrigin | GCClipYOrigin | GCClipMask);
+ }
+
+ if (pPriv->stateChanges) {
+ CopyGC(pGC, pBackingGC, pPriv->stateChanges);
+ pPriv->stateChanges = 0;
+ }
+
+ if ((pGC->patOrg.x + x_off) != pBackingGC->patOrg.x ||
+ (pGC->patOrg.y + y_off) != pBackingGC->patOrg.y) {
+ ChangeGCVal vals[2];
+
+ vals[0].val = pGC->patOrg.x + x_off;
+ vals[1].val = pGC->patOrg.y + y_off;
+ ChangeGC(NullClient, pBackingGC,
+ (GCTileStipXOrigin | GCTileStipYOrigin), vals);
+ }
+
+ ValidateGC(pBackingDrawable, pBackingGC);
+
+ FUNC_EPILOGUE(pGC, pPriv);
+}
+
+static void
+cwChangeGC(GCPtr pGC, unsigned long mask)
+{
+ cwGCPtr pPriv = (cwGCPtr) dixLookupPrivate(&pGC->devPrivates, cwGCKey);
+
+ FUNC_PROLOGUE(pGC, pPriv);
+
+ (*pGC->funcs->ChangeGC) (pGC, mask);
+
+ FUNC_EPILOGUE(pGC, pPriv);
+}
+
+static void
+cwCopyGC(GCPtr pGCSrc, unsigned long mask, GCPtr pGCDst)
+{
+ cwGCPtr pPriv = (cwGCPtr) dixLookupPrivate(&pGCDst->devPrivates, cwGCKey);
+
+ FUNC_PROLOGUE(pGCDst, pPriv);
+
+ (*pGCDst->funcs->CopyGC) (pGCSrc, mask, pGCDst);
+
+ FUNC_EPILOGUE(pGCDst, pPriv);
+}
+
+static void
+cwDestroyGC(GCPtr pGC)
+{
+ cwGCPtr pPriv = (cwGCPtr) dixLookupPrivate(&pGC->devPrivates, cwGCKey);
+
+ FUNC_PROLOGUE(pGC, pPriv);
+
+ cwDestroyBackingGC(pGC);
+
+ (*pGC->funcs->DestroyGC) (pGC);
+
+ /* leave it unwrapped */
+}
+
+static void
+cwChangeClip(GCPtr pGC, int type, pointer pvalue, int nrects)
+{
+ cwGCPtr pPriv = (cwGCPtr) dixLookupPrivate(&pGC->devPrivates, cwGCKey);
+
+ FUNC_PROLOGUE(pGC, pPriv);
+
+ (*pGC->funcs->ChangeClip) (pGC, type, pvalue, nrects);
+
+ FUNC_EPILOGUE(pGC, pPriv);
+}
+
+static void
+cwCopyClip(GCPtr pgcDst, GCPtr pgcSrc)
+{
+ cwGCPtr pPriv = (cwGCPtr) dixLookupPrivate(&pgcDst->devPrivates, cwGCKey);
+
+ FUNC_PROLOGUE(pgcDst, pPriv);
+
+ (*pgcDst->funcs->CopyClip) (pgcDst, pgcSrc);
+
+ FUNC_EPILOGUE(pgcDst, pPriv);
+}
+
+static void
+cwDestroyClip(GCPtr pGC)
+{
+ cwGCPtr pPriv = (cwGCPtr) dixLookupPrivate(&pGC->devPrivates, cwGCKey);
+
+ FUNC_PROLOGUE(pGC, pPriv);
+
+ (*pGC->funcs->DestroyClip) (pGC);
+
+ FUNC_EPILOGUE(pGC, pPriv);
+}
+
+/*
+ * Screen wrappers.
+ */
+
+#define SCREEN_PROLOGUE(pScreen, field) \
+ ((pScreen)->field = getCwScreen(pScreen)->field)
+
+#define SCREEN_EPILOGUE(pScreen, field, wrapper) do { \
+ getCwScreen(pScreen)->field = (pScreen)->field; \
+ (pScreen)->field = (wrapper); \
+} while (0)
+
+static Bool
+cwCreateGC(GCPtr pGC)
+{
+ cwGCPtr pPriv = getCwGC(pGC);
+ ScreenPtr pScreen = pGC->pScreen;
+ Bool ret;
+
+ SCREEN_PROLOGUE(pScreen, CreateGC);
+
+ if ((ret = (*pScreen->CreateGC) (pGC)))
+ FUNC_EPILOGUE(pGC, pPriv);
+
+ SCREEN_EPILOGUE(pScreen, CreateGC, cwCreateGC);
+
+ return ret;
+}
+
+static void
+cwGetImage(DrawablePtr pSrc, int x, int y, int w, int h, unsigned int format,
+ unsigned long planemask, char *pdstLine)
+{
+ ScreenPtr pScreen = pSrc->pScreen;
+ DrawablePtr pBackingDrawable;
+ int src_off_x, src_off_y;
+
+ SCREEN_PROLOGUE(pScreen, GetImage);
+
+ pBackingDrawable = cwGetBackingDrawable(pSrc, &src_off_x, &src_off_y);
+
+ CW_OFFSET_XY_SRC(x, y);
+
+ (*pScreen->GetImage) (pBackingDrawable, x, y, w, h, format, planemask,
+ pdstLine);
+
+ SCREEN_EPILOGUE(pScreen, GetImage, cwGetImage);
+}
+
+static void
+cwGetSpans(DrawablePtr pSrc, int wMax, DDXPointPtr ppt, int *pwidth,
+ int nspans, char *pdstStart)
+{
+ ScreenPtr pScreen = pSrc->pScreen;
+ DrawablePtr pBackingDrawable;
+ int i;
+ int src_off_x, src_off_y;
+
+ SCREEN_PROLOGUE(pScreen, GetSpans);
+
+ pBackingDrawable = cwGetBackingDrawable(pSrc, &src_off_x, &src_off_y);
+
+ for (i = 0; i < nspans; i++)
+ CW_OFFSET_XY_SRC(ppt[i].x, ppt[i].y);
+
+ (*pScreen->GetSpans) (pBackingDrawable, wMax, ppt, pwidth, nspans,
+ pdstStart);
+
+ SCREEN_EPILOGUE(pScreen, GetSpans, cwGetSpans);
+}
+
+static void
+cwCopyWindow(WindowPtr pWin, DDXPointRec ptOldOrg, RegionPtr prgnSrc)
+{
+ ScreenPtr pScreen = pWin->drawable.pScreen;
+
+ SCREEN_PROLOGUE(pScreen, CopyWindow);
+
+ if (!cwDrawableIsRedirWindow((DrawablePtr) pWin)) {
+ (*pScreen->CopyWindow) (pWin, ptOldOrg, prgnSrc);
+ }
+ else {
+ GCPtr pGC;
+ BoxPtr pExtents;
+ int x_off, y_off;
+ int dx, dy;
+ PixmapPtr pBackingPixmap;
+ RegionPtr pClip;
+ int src_x, src_y, dst_x, dst_y, w, h;
+
+ dx = ptOldOrg.x - pWin->drawable.x;
+ dy = ptOldOrg.y - pWin->drawable.y;
+
+ pExtents = RegionExtents(prgnSrc);
+
+ pBackingPixmap = (PixmapPtr) cwGetBackingDrawable((DrawablePtr) pWin,
+ &x_off, &y_off);
+
+ src_x = pExtents->x1 - pBackingPixmap->screen_x;
+ src_y = pExtents->y1 - pBackingPixmap->screen_y;
+ w = pExtents->x2 - pExtents->x1;
+ h = pExtents->y2 - pExtents->y1;
+ dst_x = src_x - dx;
+ dst_y = src_y - dy;
+
+ /* Translate region (as required by API) */
+ RegionTranslate(prgnSrc, -dx, -dy);
+
+ pGC = GetScratchGC(pBackingPixmap->drawable.depth, pScreen);
+ /*
+ * Copy region to GC as clip, aligning as dest clip
+ */
+ pClip = RegionCreate(NULL, 0);
+ RegionIntersect(pClip, &pWin->borderClip, prgnSrc);
+ RegionTranslate(pClip,
+ -pBackingPixmap->screen_x, -pBackingPixmap->screen_y);
+
+ (*pGC->funcs->ChangeClip) (pGC, CT_REGION, pClip, 0);
+
+ ValidateGC(&pBackingPixmap->drawable, pGC);
+
+ (*pGC->ops->CopyArea) (&pBackingPixmap->drawable,
+ &pBackingPixmap->drawable, pGC,
+ src_x, src_y, w, h, dst_x, dst_y);
+
+ (*pGC->funcs->DestroyClip) (pGC);
+
+ FreeScratchGC(pGC);
+ }
+
+ SCREEN_EPILOGUE(pScreen, CopyWindow, cwCopyWindow);
+}
+
+static PixmapPtr
+cwGetWindowPixmap(WindowPtr pWin)
+{
+ PixmapPtr pPixmap = getCwPixmap(pWin);
+
+ if (!pPixmap) {
+ ScreenPtr pScreen = pWin->drawable.pScreen;
+
+ SCREEN_PROLOGUE(pScreen, GetWindowPixmap);
+ if (pScreen->GetWindowPixmap)
+ pPixmap = (*pScreen->GetWindowPixmap) (pWin);
+ SCREEN_EPILOGUE(pScreen, GetWindowPixmap, cwGetWindowPixmap);
+ }
+ return pPixmap;
+}
+
+static void
+cwSetWindowPixmap(WindowPtr pWindow, PixmapPtr pPixmap)
+{
+ ScreenPtr pScreen = pWindow->drawable.pScreen;
+
+ if (pPixmap == (*pScreen->GetScreenPixmap) (pScreen))
+ pPixmap = NULL;
+ setCwPixmap(pWindow, pPixmap);
+}
+
+/* Screen initialization/teardown */
+void
+miInitializeCompositeWrapper(ScreenPtr pScreen)
+{
+ cwScreenPtr pScreenPriv;
+ Bool has_render = GetPictureScreenIfSet(pScreen) != NULL;
+
+ if (!dixRegisterPrivateKey(&cwScreenKeyRec, PRIVATE_SCREEN, 0))
+ return;
+
+ if (!dixRegisterPrivateKey(&cwGCKeyRec, PRIVATE_GC, sizeof(cwGCRec)))
+ return;
+
+ if (!dixRegisterPrivateKey(&cwWindowKeyRec, PRIVATE_WINDOW, 0))
+ return;
+
+ if (!dixRegisterPrivateKey(&cwPictureKeyRec, PRIVATE_PICTURE, 0))
+ return;
+
+ pScreenPriv = malloc(sizeof(cwScreenRec));
+ if (!pScreenPriv)
+ return;
+
+ dixSetPrivate(&pScreen->devPrivates, cwScreenKey, pScreenPriv);
+
+ SCREEN_EPILOGUE(pScreen, CloseScreen, cwCloseScreen);
+ SCREEN_EPILOGUE(pScreen, GetImage, cwGetImage);
+ SCREEN_EPILOGUE(pScreen, GetSpans, cwGetSpans);
+ SCREEN_EPILOGUE(pScreen, CreateGC, cwCreateGC);
+ SCREEN_EPILOGUE(pScreen, CopyWindow, cwCopyWindow);
+
+ SCREEN_EPILOGUE(pScreen, SetWindowPixmap, cwSetWindowPixmap);
+ SCREEN_EPILOGUE(pScreen, GetWindowPixmap, cwGetWindowPixmap);
+
+ if (has_render)
+ cwInitializeRender(pScreen);
+}
+
+static Bool
+cwCloseScreen(int i, ScreenPtr pScreen)
+{
+ cwScreenPtr pScreenPriv;
+ PictureScreenPtr ps = GetPictureScreenIfSet(pScreen);
+
+ pScreenPriv = (cwScreenPtr) dixLookupPrivate(&pScreen->devPrivates,
+ cwScreenKey);
+ pScreen->CloseScreen = pScreenPriv->CloseScreen;
+ pScreen->GetImage = pScreenPriv->GetImage;
+ pScreen->GetSpans = pScreenPriv->GetSpans;
+ pScreen->CreateGC = pScreenPriv->CreateGC;
+ pScreen->CopyWindow = pScreenPriv->CopyWindow;
+
+ if (ps)
+ cwFiniRender(pScreen);
+
+ free((pointer) pScreenPriv);
+
+ return (*pScreen->CloseScreen) (i, pScreen);
+}