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+/**************************************************************************/
+/* */
+/* Copyright (c) 2001, 2011 NoMachine, http://www.nomachine.com/. */
+/* */
+/* NXAGENT, NX protocol compression and NX extensions to this software */
+/* are copyright of NoMachine. Redistribution and use of the present */
+/* software is allowed according to terms specified in the file LICENSE */
+/* which comes in the source distribution. */
+/* */
+/* Check http://www.nomachine.com/licensing.html for applicability. */
+/* */
+/* NX and NoMachine are trademarks of Medialogic S.p.A. */
+/* */
+/* All rights reserved. */
+/* */
+/**************************************************************************/
+
+/*
+
+Copyright 1993 by Davor Matic
+
+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. Davor Matic makes no representations about
+the suitability of this software for any purpose. It is provided "as
+is" without express or implied warranty.
+
+*/
+
+#include "scrnintstr.h"
+#include "dix.h"
+#include "mi.h"
+#include "mibstore.h"
+#include "resource.h"
+
+#include "X.h"
+#include "Xproto.h"
+
+#include "Agent.h"
+#include "Display.h"
+#include "Visual.h"
+
+#define PANIC
+#define WARNING
+#undef TEST
+#undef DEBUG
+
+/*
+ * Predefined visual used for drawables
+ * having a 32 bits depth.
+ */
+
+Visual nxagentAlphaVisual;
+
+Visual *nxagentVisual(VisualPtr pVisual)
+{
+ XVisualInfo visual;
+
+ int i;
+
+ visual.class = pVisual->class;
+ visual.bits_per_rgb = pVisual->bitsPerRGBValue;
+ visual.colormap_size = pVisual->ColormapEntries;
+ visual.depth = pVisual->nplanes;
+ visual.red_mask = pVisual->redMask;
+ visual.green_mask = pVisual->greenMask;
+ visual.blue_mask = pVisual->blueMask;
+
+ for (i = 0; i < nxagentNumVisuals; i++)
+ {
+ if (nxagentCompareVisuals(visual, nxagentVisuals[i]) == 1)
+ {
+ return nxagentVisuals[i].visual;
+ }
+ }
+
+ return NULL;
+}
+
+Visual *nxagentVisualFromID(ScreenPtr pScreen, VisualID visual)
+{
+ int i;
+
+ for (i = 0; i < pScreen->numVisuals; i++)
+ {
+ if (pScreen->visuals[i].vid == visual)
+ {
+ return nxagentVisual(&pScreen->visuals[i]);
+ }
+ }
+
+ return NULL;
+}
+
+Colormap nxagentDefaultVisualColormap(Visual *visual)
+{
+ int i;
+
+ for (i = 0; i < nxagentNumVisuals; i++)
+ {
+ if (nxagentVisuals[i].visual == visual)
+ {
+ return nxagentDefaultColormaps[i];
+ }
+ }
+
+ return None;
+}
+
+/*
+ * This is currently unused. It should serve
+ * the scope of matching a visual whenever
+ * a drawable has a different depth than the
+ * real display.
+ */
+
+Visual *nxagentVisualFromDepth(ScreenPtr pScreen, int depth)
+{
+ int i;
+
+ for (i = 0; i < pScreen->numVisuals; i++)
+ {
+ if (pScreen->visuals[i].nplanes == depth)
+ {
+ return nxagentVisual(&pScreen->visuals[i]);
+ }
+ }
+
+ return NULL;
+}
+
+/*
+ * Create a fake 32 bits depth visual and
+ * initialize it based on the endianess
+ * of the remote display.
+ */
+
+void nxagentInitAlphaVisual()
+{
+ nxagentAlphaVisual.visualid = XAllocID(nxagentDisplay);
+
+ /*
+ * Color masks are referred to bits inside
+ * the pixel. This is independent from the
+ * endianess.
+ */
+
+ nxagentAlphaVisual.red_mask = 0x00ff0000;
+ nxagentAlphaVisual.green_mask = 0x0000ff00;
+ nxagentAlphaVisual.blue_mask = 0x000000ff;
+
+ #ifdef TEST
+ fprintf(stderr,"nxagentInitAlphaVisual: Set alpha visual with id [0x%lx] mask [0x%lx,0x%lx,0x%lx].\n",
+ nxagentAlphaVisual.visualid, nxagentAlphaVisual.red_mask,
+ nxagentAlphaVisual.green_mask, nxagentAlphaVisual.blue_mask);
+ #endif
+}