Import X server from vnc-3.3.7.

[rdpsrv] / Xserver / programs / Xserver / dix / pixmap.c

diff --git a/Xserver/programs/Xserver/dix/pixmap.c b/Xserver/programs/Xserver/dix/pixmap.c
new file mode 100644 (file)
index 0000000..ea3cc38
--- /dev/null
+++ b/Xserver/programs/Xserver/dix/pixmap.c
@@ -0,0 +1,150 @@
+/* $XConsortium: pixmap.c /main/4 1996/08/12 22:04:49 dpw $ */
+/* $XFree86: xc/programs/Xserver/dix/pixmap.c,v 3.1 1996/12/23 06:29:47 dawes Exp $ */
+/*
+
+Copyright (c) 1993  X Consortium
+
+Permission is hereby granted, free of charge, to any person obtaining
+a copy of this software and associated documentation files (the
+"Software"), to deal in the Software without restriction, including
+without limitation the rights to use, copy, modify, merge, publish,
+distribute, sublicense, and/or sell copies of the Software, and to
+permit persons to whom the Software is furnished to do so, subject to
+the following conditions:
+
+The above copyright notice and this permission notice shall be included
+in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+IN NO EVENT SHALL THE X CONSORTIUM BE LIABLE FOR ANY CLAIM, DAMAGES OR
+OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+OTHER DEALINGS IN THE SOFTWARE.
+
+Except as contained in this notice, the name of the X Consortium shall
+not be used in advertising or otherwise to promote the sale, use or
+other dealings in this Software without prior written authorization
+from the X Consortium.
+
+*/
+
+#include "X.h"
+#include "scrnintstr.h"
+#include "misc.h"
+#include "os.h"
+#include "windowstr.h"
+#include "resource.h"
+#include "dixstruct.h"
+#include "gcstruct.h"
+#include "servermd.h"
+#include "site.h"
+
+
+/*
+ *  Scratch pixmap management and device independent pixmap allocation
+ *  function.
+ */
+
+
+/* callable by ddx */
+PixmapPtr
+GetScratchPixmapHeader(pScreen, width, height, depth, bitsPerPixel, devKind,
+                      pPixData)
+    ScreenPtr   pScreen;
+    int                width;
+    int                height;
+    int                depth;
+    int                bitsPerPixel;
+    int                devKind;
+    pointer     pPixData;
+{
+    PixmapPtr pPixmap = pScreen->pScratchPixmap;
+
+    if (pPixmap)
+       pScreen->pScratchPixmap = NULL;
+    else
+       /* width and height of 0 means don't allocate any pixmap data */
+       pPixmap = (*pScreen->CreatePixmap)(pScreen, 0, 0, depth);
+
+    if (pPixmap)
+       if ((*pScreen->ModifyPixmapHeader)(pPixmap, width, height, depth,
+                                          bitsPerPixel, devKind, pPixData))
+           return pPixmap;
+    return NullPixmap;
+}
+
+
+/* callable by ddx */
+void
+FreeScratchPixmapHeader(pPixmap)
+    PixmapPtr pPixmap;
+{
+    if (pPixmap)
+    {
+       ScreenPtr pScreen = pPixmap->drawable.pScreen;
+
+       pPixmap->devPrivate.ptr = NULL; /* lest ddx chases bad ptr */
+       if (pScreen->pScratchPixmap)
+           (*pScreen->DestroyPixmap)(pPixmap);
+       else
+           pScreen->pScratchPixmap = pPixmap;
+    }
+}
+
+
+Bool
+CreateScratchPixmapsForScreen(scrnum)
+    int scrnum;
+{
+    /* let it be created on first use */
+    screenInfo.screens[scrnum]->pScratchPixmap = NULL;
+    return TRUE;
+}
+
+
+void
+FreeScratchPixmapsForScreen(scrnum)
+    int scrnum;
+{
+    FreeScratchPixmapHeader(screenInfo.screens[scrnum]->pScratchPixmap);
+}
+
+
+/* callable by ddx */
+PixmapPtr
+AllocatePixmap(pScreen, pixDataSize)
+    ScreenPtr pScreen;
+    int pixDataSize;
+{
+    PixmapPtr pPixmap;
+#ifdef PIXPRIV
+    char *ptr;
+    DevUnion *ppriv;
+    unsigned *sizes;
+    unsigned size;
+    int i;
+
+    pPixmap = (PixmapPtr)xalloc(pScreen->totalPixmapSize + pixDataSize);
+    if (!pPixmap)
+       return NullPixmap;
+    ppriv = (DevUnion *)(pPixmap + 1);
+    pPixmap->devPrivates = ppriv;
+    sizes = pScreen->PixmapPrivateSizes;
+    ptr = (char *)(ppriv + pScreen->PixmapPrivateLen);
+    for (i = pScreen->PixmapPrivateLen; --i >= 0; ppriv++, sizes++)
+    {
+        if ((size = *sizes) != 0)
+        {
+           ppriv->ptr = (pointer)ptr;
+           ptr += size;
+        }
+        else
+           ppriv->ptr = (pointer)NULL;
+    }
+#else
+    pPixmap = (PixmapPtr)xalloc(sizeof(PixmapRec) + pixDataSize);
+#endif
+    return pPixmap;
+}