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Diffstat (limited to 'xorg-server/miext/shadow/shadow.c')
| -rw-r--r-- | xorg-server/miext/shadow/shadow.c | 248 |
1 files changed, 248 insertions, 0 deletions
diff --git a/xorg-server/miext/shadow/shadow.c b/xorg-server/miext/shadow/shadow.c new file mode 100644 index 000000000..ef0df4091 --- /dev/null +++ b/xorg-server/miext/shadow/shadow.c @@ -0,0 +1,248 @@ +/* + * Copyright © 2000 Keith Packard + * + * 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 Keith Packard not be used in + * advertising or publicity pertaining to distribution of the software without + * specific, written prior permission. Keith Packard makes no + * representations about the suitability of this software for any purpose. It + * is provided "as is" without express or implied warranty. + * + * KEITH PACKARD DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, + * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO + * EVENT SHALL KEITH PACKARD 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 <stdlib.h> + +#include <X11/X.h> +#include "scrnintstr.h" +#include "windowstr.h" +#include "dixfontstr.h" +#include "mi.h" +#include "regionstr.h" +#include "globals.h" +#include "gcstruct.h" +#include "shadow.h" + +DevPrivateKey shadowScrPrivateKey = &shadowScrPrivateKey; + +#define wrap(priv, real, mem) {\ + priv->mem = real->mem; \ + real->mem = shadow##mem; \ +} + +#define unwrap(priv, real, mem) {\ + real->mem = priv->mem; \ +} + +static void +shadowRedisplay(ScreenPtr pScreen) +{ + shadowBuf(pScreen); + RegionPtr pRegion; + + if (!pBuf || !pBuf->pDamage || !pBuf->update) + return; + pRegion = DamageRegion(pBuf->pDamage); + if (REGION_NOTEMPTY(pScreen, pRegion)) { + (*pBuf->update)(pScreen, pBuf); + DamageEmpty(pBuf->pDamage); + } +} + +static void +shadowBlockHandler(pointer data, OSTimePtr pTimeout, pointer pRead) +{ + ScreenPtr pScreen = (ScreenPtr) data; + + shadowRedisplay(pScreen); +} + +static void +shadowWakeupHandler(pointer data, int i, pointer LastSelectMask) +{ +} + +static void +shadowGetImage(DrawablePtr pDrawable, int sx, int sy, int w, int h, + unsigned int format, unsigned long planeMask, char *pdstLine) +{ + ScreenPtr pScreen = pDrawable->pScreen; + shadowBuf(pScreen); + + /* Many apps use GetImage to sync with the visable frame buffer */ + if (pDrawable->type == DRAWABLE_WINDOW) + shadowRedisplay(pScreen); + unwrap(pBuf, pScreen, GetImage); + pScreen->GetImage(pDrawable, sx, sy, w, h, format, planeMask, pdstLine); + wrap(pBuf, pScreen, GetImage); +} + +#define BACKWARDS_COMPATIBILITY + +static Bool +shadowCloseScreen(int i, ScreenPtr pScreen) +{ + shadowBuf(pScreen); + + unwrap(pBuf, pScreen, GetImage); + unwrap(pBuf, pScreen, CloseScreen); + shadowRemove(pScreen, pBuf->pPixmap); + DamageDestroy(pBuf->pDamage); +#ifdef BACKWARDS_COMPATIBILITY + REGION_UNINIT(pScreen, &pBuf->damage); /* bc */ +#endif + if (pBuf->pPixmap) + pScreen->DestroyPixmap(pBuf->pPixmap); + xfree(pBuf); + return pScreen->CloseScreen(i, pScreen); +} + +#ifdef BACKWARDS_COMPATIBILITY +static void +shadowReportFunc(DamagePtr pDamage, RegionPtr pRegion, void *closure) +{ + ScreenPtr pScreen = closure; + shadowBufPtr pBuf = (shadowBufPtr) + dixLookupPrivate(&pScreen->devPrivates, shadowScrPrivateKey); + + /* Register the damaged region, use DamageReportNone below when we + * want to break BC below... */ + REGION_UNION(pScreen, &pDamage->damage, &pDamage->damage, pRegion); + + /* + * BC hack. In 7.0 and earlier several drivers would inspect the + * 'damage' member directly, so we have to keep it existing. + */ + REGION_COPY(pScreen, &pBuf->damage, pRegion); +} +#endif + +Bool +shadowSetup(ScreenPtr pScreen) +{ + shadowBufPtr pBuf; + + if (!DamageSetup(pScreen)) + return FALSE; + + pBuf = (shadowBufPtr) xalloc(sizeof(shadowBufRec)); + if (!pBuf) + return FALSE; +#ifdef BACKWARDS_COMPATIBILITY + pBuf->pDamage = DamageCreate((DamageReportFunc)shadowReportFunc, + (DamageDestroyFunc)NULL, + DamageReportRawRegion, + TRUE, pScreen, pScreen); +#else + pBuf->pDamage = DamageCreate((DamageReportFunc)NULL, + (DamageDestroyFunc)NULL, + DamageReportNone, + TRUE, pScreen, pScreen); +#endif + if (!pBuf->pDamage) { + xfree(pBuf); + return FALSE; + } + + wrap(pBuf, pScreen, CloseScreen); + wrap(pBuf, pScreen, GetImage); + pBuf->update = 0; + pBuf->window = 0; + pBuf->pPixmap = 0; + pBuf->closure = 0; + pBuf->randr = 0; +#ifdef BACKWARDS_COMPATIBILITY + REGION_NULL(pScreen, &pBuf->damage); /* bc */ +#endif + + dixSetPrivate(&pScreen->devPrivates, shadowScrPrivateKey, pBuf); + return TRUE; +} + +Bool +shadowAdd(ScreenPtr pScreen, PixmapPtr pPixmap, ShadowUpdateProc update, + ShadowWindowProc window, int randr, void *closure) +{ + shadowBuf(pScreen); + + if (!RegisterBlockAndWakeupHandlers(shadowBlockHandler, shadowWakeupHandler, + (pointer)pScreen)) + return FALSE; + + /* + * Map simple rotation values to bitmasks; fortunately, + * these are all unique + */ + switch (randr) { + case 0: + randr = SHADOW_ROTATE_0; + break; + case 90: + randr = SHADOW_ROTATE_90; + break; + case 180: + randr = SHADOW_ROTATE_180; + break; + case 270: + randr = SHADOW_ROTATE_270; + break; + } + pBuf->update = update; + pBuf->window = window; + pBuf->randr = randr; + pBuf->closure = 0; + pBuf->pPixmap = pPixmap; + DamageRegister(&pPixmap->drawable, pBuf->pDamage); + return TRUE; +} + +void +shadowRemove(ScreenPtr pScreen, PixmapPtr pPixmap) +{ + shadowBuf(pScreen); + + if (pBuf->pPixmap) { + DamageUnregister(&pBuf->pPixmap->drawable, pBuf->pDamage); + pBuf->update = 0; + pBuf->window = 0; + pBuf->randr = 0; + pBuf->closure = 0; + pBuf->pPixmap = 0; + } + + RemoveBlockAndWakeupHandlers(shadowBlockHandler, shadowWakeupHandler, + (pointer) pScreen); +} + +Bool +shadowInit(ScreenPtr pScreen, ShadowUpdateProc update, ShadowWindowProc window) +{ + PixmapPtr pPixmap; + + pPixmap = pScreen->CreatePixmap(pScreen, pScreen->width, pScreen->height, + pScreen->rootDepth, 0); + if (!pPixmap) + return FALSE; + + if (!shadowSetup(pScreen)) { + pScreen->DestroyPixmap(pPixmap); + return FALSE; + } + + shadowAdd(pScreen, pPixmap, update, window, SHADOW_ROTATE_0, 0); + + return TRUE; +} |