Rename a number of libraries and executables to avoid conflicts with KDE4

1 files changed, 473 insertions, 0 deletions

diff --git a/tdescreensaver/xsavers/xs_visual.c b/tdescreensaver/xsavers/xs_visual.c
new file mode 100644
index 00000000..bc8d31f7
--- /dev/null
+++ b/tdescreensaver/xsavers/xs_visual.c
@@ -0,0 +1,473 @@
+/* xscreensaver, Copyright (c) 1993, 1994, 1995, 1996, 1997, 1998
+ *  by Jamie Zawinski <jwz@jwz.org>
+ *
+ * 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.  No representations are made about the suitability of this
+ * software for any purpose.  It is provided "as is" without express or 
+ * implied warranty.
+ */
+
+/* This file contains some code for intelligently picking the best visual
+   (where "best" is biased in the direction of either: high color counts;
+   or: having writable color cells...)
+ */
+
+#include "xs_utils.h"
+
+#include "xs_visual.h"
+
+#include <X11/Xutil.h>
+
+/* extern char *progname; */
+
+
+#ifndef isupper
+# define isupper(c)  ((c) >= 'A' && (c) <= 'Z')
+#endif
+#ifndef _tolower
+# define _tolower(c)  ((c) - 'A' + 'a')
+#endif
+
+
+static Visual *pick_best_visual (Screen *, Bool, Bool);
+static Visual *pick_mono_visual (Screen *);
+static Visual *pick_best_visual_of_class (Screen *, int);
+static Visual *id_to_visual (Screen *, int);
+static Visual *id_to_visual (Screen *screen, int id);
+
+
+#define DEFAULT_VISUAL	-1
+#define BEST_VISUAL	-2
+#define MONO_VISUAL	-3
+#define GRAY_VISUAL	-4
+#define COLOR_VISUAL	-5
+#define SPECIFIC_VISUAL	-6
+
+Visual *
+get_visual (Screen *screen, const char *string, Bool prefer_writable_cells,
+	    Bool verbose_p)
+{
+  char *v = (string ? strdup(string) : 0);
+  char c, *tmp;
+  int vclass;
+  unsigned long id;
+  Visual *result = 0;
+
+  if (v)
+    for (tmp = v; *tmp; tmp++)
+      if (isupper (*tmp)) *tmp = _tolower (*tmp);
+
+  if (!v)					  vclass = BEST_VISUAL;
+  else if (!strcmp (v, "default"))		  vclass = DEFAULT_VISUAL;
+  else if (!strcmp (v, "best")) 		  vclass = BEST_VISUAL;
+  else if (!strcmp (v, "mono")) 		  vclass = MONO_VISUAL;
+  else if (!strcmp (v, "monochrome")) 		  vclass = MONO_VISUAL;
+  else if (!strcmp (v, "gray")) 		  vclass = GRAY_VISUAL;
+  else if (!strcmp (v, "grey")) 		  vclass = GRAY_VISUAL;
+  else if (!strcmp (v, "color")) 		  vclass = COLOR_VISUAL;
+  else if (!strcmp (v, "staticgray"))	 	  vclass = StaticGray;
+  else if (!strcmp (v, "staticcolor"))		  vclass = StaticColor;
+  else if (!strcmp (v, "truecolor"))		  vclass = TrueColor;
+  else if (!strcmp (v, "grayscale"))		  vclass = GrayScale;
+  else if (!strcmp (v, "greyscale"))		  vclass = GrayScale;
+  else if (!strcmp (v, "pseudocolor"))		  vclass = PseudoColor;
+  else if (!strcmp (v, "directcolor"))		  vclass = DirectColor;
+  else if (1 == sscanf (v, " %ld %c", &id, &c))	  vclass = SPECIFIC_VISUAL;
+  else if (1 == sscanf (v, " 0x%lx %c", &id, &c)) vclass = SPECIFIC_VISUAL;
+  else
+    {
+      fprintf (stderr, "%s: unrecognized visual \"%s\".\n", "tdescreensaver", v);
+      vclass = DEFAULT_VISUAL;
+    }
+
+  if (vclass == DEFAULT_VISUAL)
+    result = DefaultVisualOfScreen (screen);
+  else if (vclass == BEST_VISUAL)
+    result = pick_best_visual (screen, prefer_writable_cells, False);
+  else if (vclass == MONO_VISUAL)
+    {
+      result = pick_mono_visual (screen);
+      if (!result && verbose_p)
+	fprintf (stderr, "%s: no monochrome visuals.\n", "tdescreensaver");
+    }
+  else if (vclass == GRAY_VISUAL)
+    {
+      if (prefer_writable_cells)
+	result = pick_best_visual_of_class (screen, GrayScale);
+      if (!result)
+	result = pick_best_visual_of_class (screen, StaticGray);
+      if (!result)
+	result = pick_best_visual_of_class (screen, GrayScale);
+      if (!result && verbose_p)
+	fprintf (stderr, "%s: no GrayScale or StaticGray visuals.\n",
+		 "tdescreensaver");
+    }
+  else if (vclass == COLOR_VISUAL)
+    {
+      int class;
+      /* First see if the default visual will do. */
+      result = DefaultVisualOfScreen (screen);
+      class = visual_class(screen, result);
+      if (class != TrueColor &&
+	  class != PseudoColor &&
+	  class != DirectColor &&
+	  class != StaticColor)
+	result = 0;
+      if (result && visual_depth(screen, result) <= 1)
+	result = 0;
+
+      /* Else, find the best non-default color visual */
+      if (!result)
+	result = pick_best_visual (screen, prefer_writable_cells, True);
+
+      if (!result && verbose_p)
+	fprintf (stderr, "%s: no color visuals.\n", "tdescreensaver");
+    }
+  else if (vclass == SPECIFIC_VISUAL)
+    {
+      result = id_to_visual (screen, id);
+      if (!result && verbose_p)
+	fprintf (stderr, "%s: no visual with id 0x%x.\n", "tdescreensaver",
+		 (unsigned int) id);
+    }
+  else
+    {
+      Visual *visual = pick_best_visual_of_class (screen, vclass);
+      if (visual)
+	result = visual;
+      else if (verbose_p)
+	fprintf (stderr, "%s: no visual of class %s.\n", "tdescreensaver", v);
+    }
+
+  if (v) free (v);
+  return result;
+}
+
+Visual *
+get_visual_resource (Screen *screen, char *name, char *class,
+		     Bool prefer_writable_cells)
+{
+/*
+  char *string = get_string_resource (name, class);
+  Visual *v = get_visual (screen, string, prefer_writable_cells, True);
+  if (string)
+    free(string);
+  if (v)
+    return v;
+  else
+*/
+    return DefaultVisualOfScreen (screen);
+}
+
+
+static Visual *
+pick_best_visual (Screen *screen, Bool prefer_writable_cells, Bool color_only)
+{
+  Visual *visual;
+
+  if (!prefer_writable_cells)
+    {
+      /* If we don't prefer writable cells, then the "best" visual is the one
+	 on which we can allocate the largest range and number of colors.
+
+	 Therefore, a TrueColor visual which is at least 16 bits deep is best.
+	 (The assumption here being that a TrueColor of less than 16 bits is
+	 really just a PseudoColor visual with a pre-allocated color cube.)
+
+	 The next best thing is a PseudoColor visual of any type.  After that
+	 come the non-colormappable visuals, and non-color visuals.
+       */
+      if ((visual = pick_best_visual_of_class (screen, TrueColor)) &&
+	  visual_depth (screen, visual) >= 16)
+	return visual;
+    }
+
+#define TRY_CLASS(CLASS) \
+  if ((visual = pick_best_visual_of_class (screen, CLASS)) && \
+      (!color_only || visual_depth(screen, visual) > 1)) \
+    return visual
+  TRY_CLASS(PseudoColor);
+  TRY_CLASS(TrueColor);
+  TRY_CLASS(DirectColor);
+  TRY_CLASS(StaticColor);
+  if (!color_only)
+    {
+      TRY_CLASS(GrayScale);
+      TRY_CLASS(StaticGray);
+    }
+#undef TRY_CLASS
+
+  visual = DefaultVisualOfScreen (screen);
+  if (!color_only || visual_depth(screen, visual) > 1)
+    return visual;
+  else
+    return 0;
+}
+
+static Visual *
+pick_mono_visual (Screen *screen)
+{
+  Display *dpy = DisplayOfScreen (screen);
+  XVisualInfo vi_in, *vi_out;
+  int out_count;
+
+  vi_in.depth = 1;
+  vi_in.screen = screen_number (screen);
+  vi_out = XGetVisualInfo (dpy, (VisualDepthMask | VisualScreenMask),
+			   &vi_in, &out_count);
+  if (vi_out)
+    {
+      Visual *v = (out_count > 0 ? vi_out [0].visual : 0);
+      if (v && vi_out[0].depth != 1)
+	v = 0;
+      XFree ((char *) vi_out);
+      return v;
+    }
+  else
+    return 0;
+}
+
+
+static Visual *
+pick_best_visual_of_class (Screen *screen, int visual_class)
+{
+  /* The best visual of a class is the one which on which we can allocate
+     the largest range and number of colors, which means the one with the
+     greatest depth and number of cells.
+
+     (But actually, for XDaliClock, all visuals of the same class are
+     probably equivalent - either we have writable cells or we don't.)
+   */
+  Display *dpy = DisplayOfScreen (screen);
+  XVisualInfo vi_in, *vi_out;
+  int out_count;
+
+  vi_in.class = visual_class;
+  vi_in.screen = screen_number (screen);
+  vi_out = XGetVisualInfo (dpy, (VisualClassMask | VisualScreenMask),
+			   &vi_in, &out_count);
+  if (vi_out)
+    {
+      /* choose the 'best' one, if multiple */
+      int i, best;
+      Visual *visual;
+      for (i = 0, best = 0; i < out_count; i++)
+	/* It's better if it's deeper, or if it's the same depth with
+	   more cells (does that ever happen?  Well, it could...) */
+	if ((vi_out [i].depth > vi_out [best].depth) ||
+	    ((vi_out [i].depth == vi_out [best].depth) &&
+	     (vi_out [i].colormap_size > vi_out [best].colormap_size)))
+	  best = i;
+      visual = (best < out_count ? vi_out [best].visual : 0);
+      XFree ((char *) vi_out);
+      return visual;
+    }
+  else
+    return 0;
+}
+
+static Visual *
+id_to_visual (Screen *screen, int id)
+{
+  Display *dpy = DisplayOfScreen (screen);
+  XVisualInfo vi_in, *vi_out;
+  int out_count;
+  vi_in.screen = screen_number (screen);
+  vi_in.visualid = id;
+  vi_out = XGetVisualInfo (dpy, (VisualScreenMask | VisualIDMask),
+			   &vi_in, &out_count);
+  if (vi_out)
+    {
+      Visual *v = vi_out[0].visual;
+      XFree ((char *) vi_out);
+      return v;
+    }
+  return 0;
+}
+
+int
+visual_depth (Screen *screen, Visual *visual)
+{
+  Display *dpy = DisplayOfScreen (screen);
+  XVisualInfo vi_in, *vi_out;
+  int out_count, d;
+  vi_in.screen = screen_number (screen);
+  vi_in.visualid = XVisualIDFromVisual (visual);
+  vi_out = XGetVisualInfo (dpy, VisualScreenMask|VisualIDMask,
+			   &vi_in, &out_count);
+  if (! vi_out) abort ();
+  d = vi_out [0].depth;
+  XFree ((char *) vi_out);
+  return d;
+}
+
+
+#if 0
+/* You very probably don't want to be using this.
+   Pixmap depth doesn't refer to the depths of pixmaps, but rather, to
+   the depth of protocol-level on-the-wire pixmap data, that is, XImages.
+   To get this info, you should be looking at XImage->bits_per_pixel
+   instead.  (And allocating the data for your XImage structures by
+   multiplying ximage->bytes_per_line by ximage->height.)
+ */
+int
+visual_pixmap_depth (Screen *screen, Visual *visual)
+{
+  Display *dpy = DisplayOfScreen (screen);
+  int vdepth = visual_depth (screen, visual);
+  int pdepth = vdepth;
+  int i, pfvc = 0;
+  XPixmapFormatValues *pfv = XListPixmapFormats (dpy, &pfvc);
+
+  /* Return the first matching depth in the pixmap formats.  If there are no
+     matching pixmap formats (which shouldn't be able to happen at all) then
+     return the visual depth instead. */
+  for (i = 0; i < pfvc; i++)
+    if (pfv[i].depth == vdepth)
+      {
+	pdepth = pfv[i].bits_per_pixel;
+	break;
+      }
+  if (pfv)
+    XFree (pfv);
+  return pdepth;
+}
+#endif /* 0 */
+
+
+int
+visual_class (Screen *screen, Visual *visual)
+{
+  Display *dpy = DisplayOfScreen (screen);
+  XVisualInfo vi_in, *vi_out;
+  int out_count, c;
+  vi_in.screen = screen_number (screen);
+  vi_in.visualid = XVisualIDFromVisual (visual);
+  vi_out = XGetVisualInfo (dpy, VisualScreenMask|VisualIDMask,
+			   &vi_in, &out_count);
+  if (! vi_out) abort ();
+  c = vi_out [0].class;
+  XFree ((char *) vi_out);
+  return c;
+}
+
+Bool
+has_writable_cells (Screen *screen, Visual *visual)
+{
+  switch (visual_class (screen, visual))
+    {
+    case GrayScale:	/* Mappable grays. */
+    case PseudoColor:	/* Mappable colors. */
+      return True;
+    case StaticGray:	/* Fixed grays. */
+    case TrueColor:	/* Fixed colors. */
+    case StaticColor:	/* (What's the difference again?) */
+    case DirectColor:	/* DirectColor visuals are like TrueColor, but have
+			   three colormaps - one for each component of RGB.
+			   Screw it. */
+      return False;
+    default:
+      abort();
+    }
+}
+
+void
+describe_visual (FILE *f, Screen *screen, Visual *visual, Bool private_cmap_p)
+{
+  char n[10];
+  Display *dpy = DisplayOfScreen (screen);
+  XVisualInfo vi_in, *vi_out;
+  int out_count;
+  vi_in.screen = screen_number (screen);
+  vi_in.visualid = XVisualIDFromVisual (visual);
+  vi_out = XGetVisualInfo (dpy, (VisualScreenMask | VisualIDMask),
+			   &vi_in, &out_count);
+  if (! vi_out) abort ();
+  if (private_cmap_p)
+    sprintf(n, "%3d", vi_out->colormap_size);
+  else
+    strcpy(n, "default");
+
+  fprintf (f, "0x%02x (%s depth: %2d, cmap: %s)\n",
+	   (unsigned int) vi_out->visualid,
+	   (vi_out->class == StaticGray  ? "StaticGray, " :
+	    vi_out->class == StaticColor ? "StaticColor," :
+	    vi_out->class == TrueColor   ? "TrueColor,  " :
+	    vi_out->class == GrayScale   ? "GrayScale,  " :
+	    vi_out->class == PseudoColor ? "PseudoColor," :
+	    vi_out->class == DirectColor ? "DirectColor," :
+					   "UNKNOWN:    "),
+	   vi_out->depth, n);
+  XFree ((char *) vi_out);
+}
+
+int
+screen_number (Screen *screen)
+{
+  Display *dpy = DisplayOfScreen (screen);
+  int i;
+  for (i = 0; i < ScreenCount (dpy); i++)
+    if (ScreenOfDisplay (dpy, i) == screen)
+      return i;
+  abort ();
+}
+
+int
+visual_cells (Screen *screen, Visual *visual)
+{
+  Display *dpy = DisplayOfScreen (screen);
+  XVisualInfo vi_in, *vi_out;
+  int out_count, c;
+  vi_in.screen = screen_number (screen);
+  vi_in.visualid = XVisualIDFromVisual (visual);
+  vi_out = XGetVisualInfo (dpy, VisualScreenMask|VisualIDMask,
+			   &vi_in, &out_count);
+  if (! vi_out) abort ();
+  c = vi_out [0].colormap_size;
+  XFree ((char *) vi_out);
+  return c;
+}
+
+Visual *
+find_similar_visual(Screen *screen, Visual *old_visual)
+{
+  Display *dpy = DisplayOfScreen (screen);
+  XVisualInfo vi_in, *vi_out;
+  Visual *result = 0;
+  int out_count;
+
+  vi_in.screen = screen_number (screen);
+  vi_in.class  = visual_class (screen, old_visual);
+  vi_in.depth  = visual_depth (screen, old_visual);
+
+  /* Look for a visual of the same class and depth.
+   */
+  vi_out = XGetVisualInfo (dpy, (VisualScreenMask | VisualClassMask |
+				 VisualDepthMask),
+			   &vi_in, &out_count);
+  if (vi_out && out_count > 0)
+    result = vi_out[0].visual;
+  if (vi_out) XFree (vi_out);
+  vi_out = 0;
+
+  /* Failing that, look for a visual of the same class.
+   */
+  if (!result)
+    {
+      vi_out = XGetVisualInfo (dpy, (VisualScreenMask | VisualClassMask),
+			       &vi_in, &out_count);
+      if (vi_out && out_count > 0)
+	result = vi_out[0].visual;
+      if (vi_out) XFree (vi_out);
+      vi_out = 0;
+    }
+
+  /* Failing that, return the default visual. */
+  if (!result)
+    result = DefaultVisualOfScreen (screen);
+
+  return result;
+}