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Diffstat (limited to 'composite/compoverlay.c')
| -rw-r--r-- | composite/compoverlay.c | 159 |
1 files changed, 159 insertions, 0 deletions
diff --git a/composite/compoverlay.c b/composite/compoverlay.c new file mode 100644 index 000000000..94e5b0346 --- /dev/null +++ b/composite/compoverlay.c @@ -0,0 +1,159 @@ +/* + * Copyright © 2006 Sun Microsystems + * + * 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 Sun Microsystems not be used in + * advertising or publicity pertaining to distribution of the software without + * specific, written prior permission. Sun Microsystems makes no + * representations about the suitability of this software for any purpose. It + * is provided "as is" without express or implied warranty. + * + * SUN MICROSYSTEMS DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, + * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO + * EVENT SHALL SUN MICROSYSTEMS 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. + * + * Copyright © 2003 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 "compint.h" +#include "xace.h" + +/* + * Delete the given overlay client list element from its screen list. + */ +void +compFreeOverlayClient (CompOverlayClientPtr pOcToDel) +{ + ScreenPtr pScreen = pOcToDel->pScreen; + CompScreenPtr cs = GetCompScreen (pScreen); + CompOverlayClientPtr *pPrev, pOc; + + for (pPrev = &cs->pOverlayClients; (pOc = *pPrev); pPrev = &pOc->pNext) + { + if (pOc == pOcToDel) { + *pPrev = pOc->pNext; + xfree (pOc); + break; + } + } + + /* Destroy overlay window when there are no more clients using it */ + if (cs->pOverlayClients == NULL) + compDestroyOverlayWindow (pScreen); +} + +/* + * Return the client's first overlay client rec from the given screen + */ +CompOverlayClientPtr +compFindOverlayClient (ScreenPtr pScreen, ClientPtr pClient) +{ + CompScreenPtr cs = GetCompScreen(pScreen); + CompOverlayClientPtr pOc; + + for (pOc = cs->pOverlayClients; pOc != NULL; pOc = pOc->pNext) + if (pOc->pClient == pClient) + return pOc; + + return NULL; +} + +/* + * Create an overlay client object for the given client + */ +CompOverlayClientPtr +compCreateOverlayClient (ScreenPtr pScreen, ClientPtr pClient) +{ + CompScreenPtr cs = GetCompScreen(pScreen); + CompOverlayClientPtr pOc; + + pOc = (CompOverlayClientPtr) xalloc(sizeof(CompOverlayClientRec)); + if (pOc == NULL) + return NULL; + + pOc->pClient = pClient; + pOc->pScreen = pScreen; + pOc->resource = FakeClientID(pClient->index); + pOc->pNext = cs->pOverlayClients; + cs->pOverlayClients = pOc; + + /* + * Create a resource for this element so it can be deleted + * when the client goes away. + */ + if (!AddResource (pOc->resource, CompositeClientOverlayType, (pointer) pOc)) + return NULL; + + return pOc; +} + +/* + * Create the overlay window and map it + */ +Bool +compCreateOverlayWindow (ScreenPtr pScreen) +{ + CompScreenPtr cs = GetCompScreen(pScreen); + WindowPtr pRoot = WindowTable[pScreen->myNum]; + WindowPtr pWin; + XID overrideRedirect = TRUE; + int result; + + pWin = cs->pOverlayWin = + CreateWindow (cs->overlayWid, pRoot, + 0, 0, pScreen->width, pScreen->height, 0, + InputOutput, CWOverrideRedirect, &overrideRedirect, + pRoot->drawable.depth, + serverClient, pScreen->rootVisual, &result); + if (pWin == NULL) + return FALSE; + + if (!AddResource(pWin->drawable.id, RT_WINDOW, (pointer)pWin)) + return FALSE; + + MapWindow(pWin, serverClient); + + return TRUE; +} + +/* + * Destroy the overlay window + */ +void +compDestroyOverlayWindow (ScreenPtr pScreen) +{ + CompScreenPtr cs = GetCompScreen(pScreen); + + cs->pOverlayWin = NullWindow; + FreeResource (cs->overlayWid, RT_NONE); +} + |