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//----------------------------------------------------------------------------
// 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();
}
}
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