From 4bfa7ba6f0365f08e92f972eff4350d22ced21c4 Mon Sep 17 00:00:00 2001 From: "Enrico Weigelt, metux IT consult" Date: Thu, 11 Jul 2024 21:36:37 +0200 Subject: [PATCH] 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 3f3fb4cdc..efd2aac91 100644 --- a/xfixes/region.c +++ b/xfixes/region.c @@ -567,17 +567,33 @@ 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 XINERAMA + 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; @@ -613,17 +629,14 @@ 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) { @@ -687,6 +700,22 @@ ProcXFixesSetWindowShapeRegion(ClientPtr client) return Success; } +static int +PanoramiXFixesSetWindowShapeRegion(ClientPtr client, xXFixesSetWindowShapeRegionReq *stuff); + +int +ProcXFixesSetWindowShapeRegion(ClientPtr client) +{ + REQUEST(xXFixesSetWindowShapeRegionReq); + REQUEST_SIZE_MATCH(xXFixesSetWindowShapeRegionReq); + +#ifdef XINERAMA + if (XFixesUseXinerama) + return PanoramiXFixesSetWindowShapeRegion(client, stuff); +#endif + return SingleXFixesSetWindowShapeRegion(client, stuff); +} + int _X_COLD SProcXFixesSetWindowShapeRegion(ClientPtr client) { @@ -699,15 +728,31 @@ 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 XINERAMA + 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); @@ -785,15 +830,12 @@ SProcXFixesExpandRegion(ClientPtr client) #ifdef XINERAMA -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; @@ -802,7 +844,7 @@ 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; } @@ -810,17 +852,13 @@ 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))) { @@ -838,8 +876,7 @@ 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); @@ -851,16 +888,13 @@ 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))) { @@ -878,8 +912,7 @@ 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 007515c55..ffebe1f00 100644 --- a/xfixes/xfixes.c +++ b/xfixes/xfixes.c @@ -257,32 +257,18 @@ XFixesExtensionInit(void) #ifdef XINERAMA -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 /* XINERAMA */ diff --git a/xfixes/xfixesint.h b/xfixes/xfixesint.h index 5d64e94d1..5033d056d 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 XINERAMA -extern int (*PanoramiXSaveXFixesVector[XFixesNumberRequests]) (ClientPtr); void PanoramiXFixesInit(void); void PanoramiXFixesReset(void); #endif /* XINERAMA */