From eb0baa881cf6498113ae65aa7911f2d05659576f Mon Sep 17 00:00:00 2001 From: "Enrico Weigelt, metux IT consult" Date: Thu, 11 Jul 2024 21:36:37 +0200 Subject: [PATCH] (!1614) xfixes: untwist Xinerama handling The current way of switching between Xinerama and single-screen handlers is quite complicated and needs call vector tables that are changed on the fly, which in turn makes dispatching more complicated. Reworking this into a simple and straight code flow, where individual request procs just look at a flag to decide whether to call the Xinerama or single screen version. This isn't just much easier to understand (and debug), but also removes the need or the call vectors, thus allowing further simplification of the dispatcher. Signed-off-by: Enrico Weigelt, metux IT consult --- xfixes/region.c | 97 +++++++++++++++++++++++++++++++--------------- xfixes/xfixes.c | 20 ++-------- xfixes/xfixesint.h | 11 +----- 3 files changed, 69 insertions(+), 59 deletions(-) diff --git a/xfixes/region.c b/xfixes/region.c index 4595f8f2d..51b3cda91 100644 --- a/xfixes/region.c +++ b/xfixes/region.c @@ -593,17 +593,33 @@ SProcXFixesFetchRegion(ClientPtr client) return (*ProcXFixesVector[stuff->xfixesReqType]) (client); } +static int +PanoramiXFixesSetGCClipRegion(ClientPtr client, xXFixesSetGCClipRegionReq *stuff); + +static int +SingleXFixesSetGCClipRegion(ClientPtr client, xXFixesSetGCClipRegionReq *stuff); + int ProcXFixesSetGCClipRegion(ClientPtr client) +{ + REQUEST(xXFixesSetGCClipRegionReq); + REQUEST_SIZE_MATCH(xXFixesSetGCClipRegionReq); + +#ifdef PANORAMIX + if (XFixesUseXinerama) + return PanoramiXFixesSetGCClipRegion(client, stuff); +#endif + return SingleXFixesSetGCClipRegion(client, stuff); +} + +static int +SingleXFixesSetGCClipRegion(ClientPtr client, xXFixesSetGCClipRegionReq *stuff) { GCPtr pGC; RegionPtr pRegion; ChangeGCVal vals[2]; int rc; - REQUEST(xXFixesSetGCClipRegionReq); - REQUEST_SIZE_MATCH(xXFixesSetGCClipRegionReq); - rc = dixLookupGC(&pGC, stuff->gc, client, DixSetAttrAccess); if (rc != Success) return rc; @@ -641,17 +657,14 @@ SProcXFixesSetGCClipRegion(ClientPtr client) typedef RegionPtr (*CreateDftPtr) (WindowPtr pWin); -int -ProcXFixesSetWindowShapeRegion(ClientPtr client) +static int +SingleXFixesSetWindowShapeRegion(ClientPtr client, xXFixesSetWindowShapeRegionReq *stuff) { WindowPtr pWin; RegionPtr pRegion; RegionPtr *pDestRegion; int rc; - REQUEST(xXFixesSetWindowShapeRegionReq); - - REQUEST_SIZE_MATCH(xXFixesSetWindowShapeRegionReq); rc = dixLookupResourceByType((void **) &pWin, stuff->dest, X11_RESTYPE_WINDOW, client, DixSetAttrAccess); if (rc != Success) { @@ -715,6 +728,22 @@ ProcXFixesSetWindowShapeRegion(ClientPtr client) return Success; } +static int +PanoramiXFixesSetWindowShapeRegion(ClientPtr client, xXFixesSetWindowShapeRegionReq *stuff); + +int +ProcXFixesSetWindowShapeRegion(ClientPtr client) +{ + REQUEST(xXFixesSetWindowShapeRegionReq); + REQUEST_SIZE_MATCH(xXFixesSetWindowShapeRegionReq); + +#ifdef PANORAMIX + if (XFixesUseXinerama) + return PanoramiXFixesSetWindowShapeRegion(client, stuff); +#endif + return SingleXFixesSetWindowShapeRegion(client, stuff); +} + int _X_COLD SProcXFixesSetWindowShapeRegion(ClientPtr client) { @@ -729,15 +758,31 @@ SProcXFixesSetWindowShapeRegion(ClientPtr client) return (*ProcXFixesVector[stuff->xfixesReqType]) (client); } +static int +SingleXFixesSetPictureClipRegion(ClientPtr client, xXFixesSetPictureClipRegionReq *stuff); + +static int +PanoramiXFixesSetPictureClipRegion(ClientPtr client, xXFixesSetPictureClipRegionReq *stuff); + int ProcXFixesSetPictureClipRegion(ClientPtr client) +{ + REQUEST(xXFixesSetPictureClipRegionReq); + REQUEST_SIZE_MATCH(xXFixesSetPictureClipRegionReq); + +#ifdef PANORAMIX + if (XFixesUseXinerama) + return PanoramiXFixesSetPictureClipRegion(client, stuff); +#endif + return SingleXFixesSetPictureClipRegion(client, stuff); +} + +static int +SingleXFixesSetPictureClipRegion(ClientPtr client, xXFixesSetPictureClipRegionReq *stuff) { PicturePtr pPicture; RegionPtr pRegion; - REQUEST(xXFixesSetPictureClipRegionReq); - - REQUEST_SIZE_MATCH(xXFixesSetPictureClipRegionReq); VERIFY_PICTURE(pPicture, stuff->picture, client, DixSetAttrAccess); VERIFY_REGION_OR_NONE(pRegion, stuff->region, client, DixReadAccess); @@ -821,15 +866,12 @@ SProcXFixesExpandRegion(ClientPtr client) #include "panoramiX.h" #include "panoramiXsrv.h" -int -PanoramiXFixesSetGCClipRegion(ClientPtr client) +static int +PanoramiXFixesSetGCClipRegion(ClientPtr client, xXFixesSetGCClipRegionReq *stuff) { - REQUEST(xXFixesSetGCClipRegionReq); int result = Success, j; PanoramiXRes *gc; - REQUEST_SIZE_MATCH(xXFixesSetGCClipRegionReq); - if ((result = dixLookupResourceByType((void **) &gc, stuff->gc, XRT_GC, client, DixWriteAccess))) { client->errorValue = stuff->gc; @@ -838,7 +880,7 @@ PanoramiXFixesSetGCClipRegion(ClientPtr client) FOR_NSCREENS_BACKWARD(j) { stuff->gc = gc->info[j].id; - result = (*PanoramiXSaveXFixesVector[X_XFixesSetGCClipRegion]) (client); + result = SingleXFixesSetGCClipRegion(client, stuff); if (result != Success) break; } @@ -846,17 +888,13 @@ PanoramiXFixesSetGCClipRegion(ClientPtr client) return result; } -int -PanoramiXFixesSetWindowShapeRegion(ClientPtr client) +static int +PanoramiXFixesSetWindowShapeRegion(ClientPtr client, xXFixesSetWindowShapeRegionReq *stuff) { int result = Success, j; PanoramiXRes *win; RegionPtr reg = NULL; - REQUEST(xXFixesSetWindowShapeRegionReq); - - REQUEST_SIZE_MATCH(xXFixesSetWindowShapeRegionReq); - if ((result = dixLookupResourceByType((void **) &win, stuff->dest, XRT_WINDOW, client, DixWriteAccess))) { @@ -874,8 +912,7 @@ PanoramiXFixesSetWindowShapeRegion(ClientPtr client) if (reg) RegionTranslate(reg, -screen->x, -screen->y); - result = - (*PanoramiXSaveXFixesVector[X_XFixesSetWindowShapeRegion]) (client); + result = SingleXFixesSetWindowShapeRegion(client, stuff); if (reg) RegionTranslate(reg, screen->x, screen->y); @@ -887,16 +924,13 @@ PanoramiXFixesSetWindowShapeRegion(ClientPtr client) return result; } -int -PanoramiXFixesSetPictureClipRegion(ClientPtr client) +static int +PanoramiXFixesSetPictureClipRegion(ClientPtr client, xXFixesSetPictureClipRegionReq *stuff) { - REQUEST(xXFixesSetPictureClipRegionReq); int result = Success, j; PanoramiXRes *pict; RegionPtr reg = NULL; - REQUEST_SIZE_MATCH(xXFixesSetPictureClipRegionReq); - if ((result = dixLookupResourceByType((void **) &pict, stuff->picture, XRT_PICTURE, client, DixWriteAccess))) { @@ -914,8 +948,7 @@ PanoramiXFixesSetPictureClipRegion(ClientPtr client) if (reg) RegionTranslate(reg, -screen->x, -screen->y); - result = - (*PanoramiXSaveXFixesVector[X_XFixesSetPictureClipRegion]) (client); + result = SingleXFixesSetPictureClipRegion(client, stuff); if (reg) RegionTranslate(reg, screen->x, screen->y); diff --git a/xfixes/xfixes.c b/xfixes/xfixes.c index 69b8241a4..94870045a 100644 --- a/xfixes/xfixes.c +++ b/xfixes/xfixes.c @@ -256,32 +256,18 @@ XFixesExtensionInit(void) #ifdef PANORAMIX -int (*PanoramiXSaveXFixesVector[XFixesNumberRequests]) (ClientPtr); +int XFixesUseXinerama = 0; void PanoramiXFixesInit(void) { - int i; - - for (i = 0; i < XFixesNumberRequests; i++) - PanoramiXSaveXFixesVector[i] = ProcXFixesVector[i]; - /* - * Stuff in Xinerama aware request processing hooks - */ - ProcXFixesVector[X_XFixesSetGCClipRegion] = PanoramiXFixesSetGCClipRegion; - ProcXFixesVector[X_XFixesSetWindowShapeRegion] = - PanoramiXFixesSetWindowShapeRegion; - ProcXFixesVector[X_XFixesSetPictureClipRegion] = - PanoramiXFixesSetPictureClipRegion; + XFixesUseXinerama = 1; } void PanoramiXFixesReset(void) { - int i; - - for (i = 0; i < XFixesNumberRequests; i++) - ProcXFixesVector[i] = PanoramiXSaveXFixesVector[i]; + XFixesUseXinerama = 0; } #endif diff --git a/xfixes/xfixesint.h b/xfixes/xfixesint.h index a1dd6fe63..0ad9ee146 100644 --- a/xfixes/xfixesint.h +++ b/xfixes/xfixesint.h @@ -61,6 +61,7 @@ #include "xfixes.h" extern int XFixesEventBase; +extern int XFixesUseXinerama; typedef struct _XFixesClient { CARD32 major_version; @@ -252,15 +253,6 @@ int int SProcXFixesExpandRegion(ClientPtr client); -int - PanoramiXFixesSetGCClipRegion(ClientPtr client); - -int - PanoramiXFixesSetWindowShapeRegion(ClientPtr client); - -int - PanoramiXFixesSetPictureClipRegion(ClientPtr client); - /* Cursor Visibility (Version 4) */ int @@ -311,7 +303,6 @@ Bool /* Xinerama */ #ifdef PANORAMIX -extern int (*PanoramiXSaveXFixesVector[XFixesNumberRequests]) (ClientPtr); void PanoramiXFixesInit(void); void PanoramiXFixesReset(void); #endif