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