--- /dev/null
+/***********************************************************
+
+Copyright (c) 1987 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.
+
+
+Copyright 1987 by Digital Equipment Corporation, Maynard, Massachusetts.
+
+ All Rights Reserved
+
+Permission to use, copy, modify, and distribute this software and its
+documentation for any purpose and without fee is hereby granted,
+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 Digital not be
+used in advertising or publicity pertaining to distribution of the
+software without specific, written prior permission.
+
+DIGITAL DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING
+ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL
+DIGITAL 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.
+
+******************************************************************/
+/* $XConsortium: mfbcmap.c,v 5.6 94/04/17 20:28:19 dpw Exp $ */
+#include "X.h"
+#include "scrnintstr.h"
+#include "colormapst.h"
+#include "resource.h"
+
+/* A monochrome frame buffer is a static gray colormap with two entries.
+ * We have a "required list" of length 1. Because we can only support 1
+ * colormap, we never have to change it, but we may have to change the
+ * name we call it. If someone installs a new colormap, we know it must
+ * look just like the old one (because we've checked in dispatch that it was
+ * a valid colormap identifier, and all the colormap IDs for this device
+ * look the same). Nevertheless, we still have to uninstall the old colormap
+ * and install the new one. Similarly, if someone uninstalls a colormap,
+ * we have to install the default map, even though we know those two looked
+ * alike.
+ * The required list concept is pretty much irrelevant when you can only
+ * have one map installed at a time.
+ */
+static ColormapPtr InstalledMaps[MAXSCREENS];
+
+int
+mfbListInstalledColormaps(pScreen, pmaps)
+ ScreenPtr pScreen;
+ Colormap *pmaps;
+{
+ /* By the time we are processing requests, we can guarantee that there
+ * is always a colormap installed */
+ *pmaps = InstalledMaps[pScreen->myNum]->mid;
+ return (1);
+}
+
+
+void
+mfbInstallColormap(pmap)
+ ColormapPtr pmap;
+{
+ int index = pmap->pScreen->myNum;
+ ColormapPtr oldpmap = InstalledMaps[index];
+
+ if(pmap != oldpmap)
+ {
+ /* Uninstall pInstalledMap. No hardware changes required, just
+ * notify all interested parties. */
+ if(oldpmap != (ColormapPtr)None)
+ WalkTree(pmap->pScreen, TellLostMap, (pointer)&oldpmap->mid);
+ /* Install pmap */
+ InstalledMaps[index] = pmap;
+ WalkTree(pmap->pScreen, TellGainedMap, (pointer)&pmap->mid);
+
+ }
+}
+
+void
+mfbUninstallColormap(pmap)
+ ColormapPtr pmap;
+{
+ int index = pmap->pScreen->myNum;
+ ColormapPtr curpmap = InstalledMaps[index];
+
+ if(pmap == curpmap)
+ {
+ if (pmap->mid != pmap->pScreen->defColormap)
+ {
+ curpmap = (ColormapPtr) LookupIDByType(pmap->pScreen->defColormap,
+ RT_COLORMAP);
+ (*pmap->pScreen->InstallColormap)(curpmap);
+ }
+ }
+}
+
+/*ARGSUSED*/
+void
+mfbResolveColor (pred, pgreen, pblue, pVisual)
+ unsigned short *pred;
+ unsigned short *pgreen;
+ unsigned short *pblue;
+ VisualPtr pVisual;
+{
+ /*
+ * Gets intensity from RGB. If intensity is >= half, pick white, else
+ * pick black. This may well be more trouble than it's worth.
+ */
+ *pred = *pgreen = *pblue =
+ (((30L * *pred +
+ 59L * *pgreen +
+ 11L * *pblue) >> 8) >= (((1<<8)-1)*50)) ? ~0 : 0;
+}
+
+Bool
+mfbCreateColormap(pMap)
+ ColormapPtr pMap;
+{
+ ScreenPtr pScreen;
+ unsigned short red0, green0, blue0;
+ unsigned short red1, green1, blue1;
+ Pixel pix;
+
+ pScreen = pMap->pScreen;
+ if (pScreen->whitePixel == 0)
+ {
+ red0 = green0 = blue0 = ~0;
+ red1 = green1 = blue1 = 0;
+ }
+ else
+ {
+ red0 = green0 = blue0 = 0;
+ red1 = green1 = blue1 = ~0;
+ }
+
+ /* this is a monochrome colormap, it only has two entries, just fill
+ * them in by hand. If it were a more complex static map, it would be
+ * worth writing a for loop or three to initialize it */
+
+ /* this will be pixel 0 */
+ pix = 0;
+ if (AllocColor(pMap, &red0, &green0, &blue0, &pix, 0) != Success)
+ return FALSE;
+
+ /* this will be pixel 1 */
+ if (AllocColor(pMap, &red1, &green1, &blue1, &pix, 0) != Success)
+ return FALSE;
+ return TRUE;
+}
+
+/*ARGSUSED*/
+void
+mfbDestroyColormap (pMap)
+ ColormapPtr pMap;
+{
+ return;
+}
+
+Bool
+mfbCreateDefColormap (pScreen)
+ ScreenPtr pScreen;
+{
+ VisualPtr pVisual;
+ ColormapPtr pColormap;
+
+ for (pVisual = pScreen->visuals;
+ pVisual->vid != pScreen->rootVisual;
+ pVisual++)
+ ;
+ if (CreateColormap (pScreen->defColormap, pScreen, pVisual,
+ &pColormap, AllocNone, 0) != Success)
+ {
+ return FALSE;
+ }
+ (*pScreen->InstallColormap) (pColormap);
+ return TRUE;
+}
projects / rdpsrv / blobdiff