Import X server from vnc-3.3.7.

[rdpsrv] / Xserver / programs / Xserver / hw / vnc / cmap.c

diff --git a/Xserver/programs/Xserver/hw/vnc/cmap.c b/Xserver/programs/Xserver/hw/vnc/cmap.c
new file mode 100644 (file)
index 0000000..0d33443
--- /dev/null
+++ b/Xserver/programs/Xserver/hw/vnc/cmap.c
@@ -0,0 +1,140 @@
+/*
+ * cmap.c
+ */
+
+/*
+ *  Copyright (C) 1999 AT&T Laboratories Cambridge.  All Rights Reserved.
+ *
+ *  This is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This software is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this software; if not, write to the Free Software
+ *  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307,
+ *  USA.
+ */
+
+/*
+
+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 <stdio.h>
+#include "scrnintstr.h"
+#include "resource.h"
+#include "colormapst.h"
+#include "rfb.h"
+
+ColormapPtr rfbInstalledColormap;
+
+int
+rfbListInstalledColormaps(pScreen, pmaps)
+    ScreenPtr  pScreen;
+    Colormap   *pmaps;
+{
+    /* By the time we are processing requests, we can guarantee that there
+     * is always a colormap installed */
+    *pmaps = rfbInstalledColormap->mid;
+    return (1);
+}
+
+
+void
+rfbInstallColormap(pmap)
+    ColormapPtr        pmap;
+{
+    ColormapPtr oldpmap = rfbInstalledColormap;
+
+    if (pmap != oldpmap) {
+
+       if(oldpmap != (ColormapPtr)None)
+           WalkTree(pmap->pScreen, TellLostMap, (char *)&oldpmap->mid);
+       /* Install pmap */
+       rfbInstalledColormap = pmap;
+       WalkTree(pmap->pScreen, TellGainedMap, (char *)&pmap->mid);
+
+       rfbSetClientColourMaps(0, 0);
+    }
+}
+
+void
+rfbUninstallColormap(pmap)
+    ColormapPtr        pmap;
+{
+    ColormapPtr curpmap = rfbInstalledColormap;
+
+    if(pmap == curpmap)
+    {
+       if (pmap->mid != pmap->pScreen->defColormap)
+       {
+           curpmap = (ColormapPtr) LookupIDByType(pmap->pScreen->defColormap,
+                                                  RT_COLORMAP);
+           (*pmap->pScreen->InstallColormap)(curpmap);
+       }
+    }
+}
+
+
+/*
+ * rfbStoreColors.  We have a set of pixels but they may be in any order.
+ * If some of them happen to be in continuous ascending order then we can
+ * group them together into a single call to rfbSetClientColourMaps.
+ */
+
+void
+rfbStoreColors(pmap, ndef, pdefs)
+    ColormapPtr pmap;
+    int         ndef;
+    xColorItem  *pdefs;
+{
+    int i;
+    int first = -1;
+    int n = 0;
+
+    if (pmap == rfbInstalledColormap) {
+       for (i = 0; i < ndef; i++) {
+           if ((first != -1) && (first + n == pdefs[i].pixel)) {
+               n++;
+           } else {
+               if (first != -1) {
+                   rfbSetClientColourMaps(first, n);
+               }
+               first = pdefs[i].pixel;
+               n = 1;
+           }
+       }
+       rfbSetClientColourMaps(first, n);
+    }
+}