1 files changed, 86 insertions, 0 deletions
diff --git a/kscreensaver/xsavers/xlock.cpp b/kscreensaver/xsavers/xlock.cpp
new file mode 100644
index 00000000..7e7634db
--- /dev/null
+++ b/kscreensaver/xsavers/xlock.cpp
@@ -0,0 +1,86 @@
+//----------------------------------------------------------------------------
+// This module contains code to interface original xlock savers to
+// kscreensave
+//
+
+#include <time.h>
+#include <qapplication.h>
+#include "xlock.h"
+
+
+int screen;
+Display *dsp;
+perscreen Scr[MAXSCREENS];
+int batchcount = 100;
+int cycles = 100;
+Bool mono = 0;
+//Bool allowroot = 0;
+char *ProgramName;
+/*
+Dr. Park's algorithm published in the Oct. '88 ACM
+"Random Number Generators: Good Ones Are Hard To Find"
+His version available at ftp://cs.wm.edu/pub/rngs.tar
+Present form by many authors.
+*/
+
+static int Seed = 1;       /* This is required to be 32 bits long */
+
+/*
+ *      Given an integer, this routine initializes the RNG seed.
+ */
+void SetRNG(long s)
+{
+	Seed = (int) s;
+}
+
+/*
+ *      Returns an integer between 0 and 2147483647, inclusive.
+ */
+long LongRNG()
+{
+	if ((Seed = Seed % 44488 * 48271 - Seed / 44488 * 3399) < 0)
+		Seed += 2147483647;
+	return (long) (Seed - 1);
+}
+
+unsigned long
+allocpixel(Colormap cmap, const char *name, const char *def)
+{
+	XColor      col;
+	XColor      tmp;
+	XParseColor(dsp, cmap, name, &col);
+	if (!XAllocColor(dsp, cmap, &col))
+	{
+		fprintf(stderr, "couldn't allocate: %s, using %s instead\n", name, def);
+		XAllocNamedColor(dsp, cmap, def, &col, &tmp);
+	}
+
+	return col.pixel;
+}
+
+void initXLock( GC gc )
+{
+	SetRNG( time(NULL) );
+
+	dsp = qt_xdisplay();
+	screen = qt_xscreen();
+
+	Screen *scr = ScreenOfDisplay(dsp, screen);
+
+	Scr[0].gc = gc;
+	Scr[0].npixels = NUMCOLORS;
+	Scr[0].cmap = None;
+
+	Colormap    cmap = DefaultColormapOfScreen(scr);
+	Scr[0].bgcol = allocpixel(cmap, "background", "White");
+	Scr[0].bgcol = allocpixel(cmap, "foreground", "Black");
+
+	QColor color;
+
+	for ( int i = 0; i < NUMCOLORS; i++ )
+	{
+		color.setHsv( i * 360 / NUMCOLORS, 255, 255 );
+		Scr[0].pixels[i] = color.alloc();
+	}
+}
+