1 files changed, 159 insertions, 0 deletions
diff --git a/nx-X11/programs/Xserver/hw/nxagent/Visual.c b/nx-X11/programs/Xserver/hw/nxagent/Visual.c
new file mode 100644
index 000000000..b086c0e9a
--- /dev/null
+++ b/nx-X11/programs/Xserver/hw/nxagent/Visual.c
@@ -0,0 +1,159 @@
+/**************************************************************************/
+/*                                                                        */
+/* 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
+}