100 lines
1.8 KiB
C
100 lines
1.8 KiB
C
#include <u.h>
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#include <libc.h>
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#include <draw.h>
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#include <event.h>
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Image *hrhand, *minhand;
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Image *dots, *back;
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Point
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circlept(Point c, int r, int degrees)
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{
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double rad;
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rad = (double) degrees * PI/180.0;
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c.x += cos(rad)*r;
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c.y -= sin(rad)*r;
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return c;
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}
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void
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redraw(Image *screen)
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{
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static int tm, ntm;
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static Rectangle r;
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static Point c;
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static int rad;
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int i;
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int anghr, angmin;
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static Tm ntms;
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ntm = time(0);
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if(ntm == tm && eqrect(screen->r, r))
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return;
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ntms = *localtime(ntm);
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anghr = 90-(ntms.hour*5 + ntms.min/12)*6;
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angmin = 90-ntms.min*6;
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tm = ntm;
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r = screen->r;
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c = divpt(addpt(r.min, r.max), 2);
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rad = Dx(r) < Dy(r) ? Dx(r) : Dy(r);
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rad /= 2;
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rad -= 8;
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draw(screen, screen->r, back, nil, ZP);
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for(i=0; i<12; i++)
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fillellipse(screen, circlept(c, rad, i*(360/12)), 2, 2, dots, ZP);
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line(screen, c, circlept(c, (rad*3)/4, angmin), 0, 0, 1, minhand, ZP);
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line(screen, c, circlept(c, rad/2, anghr), 0, 0, 1, hrhand, ZP);
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flushimage(display, 1);
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}
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void
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eresized(int new)
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{
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if(new && getwindow(display, Refnone) < 0)
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fprint(2,"can't reattach to window");
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redraw(screen);
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}
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void
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main(int, char**)
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{
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Event e;
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Mouse m;
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Menu menu;
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char *mstr[] = {"exit", 0};
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int key, timer;
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int t;
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if (initdraw(0, 0, "clock") < 0)
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sysfatal("initdraw failed");
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back = allocimagemix(display, DPalebluegreen, DWhite);
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hrhand = allocimage(display, Rect(0,0,1,1), CMAP8, 1, DDarkblue);
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minhand = allocimage(display, Rect(0,0,1,1), CMAP8, 1, DPaleblue);
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dots = allocimage(display, Rect(0,0,1,1), CMAP8, 1, DBlue);
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redraw(screen);
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einit(Emouse);
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t = (30*1000);
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timer = etimer(0, t);
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menu.item = mstr;
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menu.lasthit = 0;
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for(;;) {
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key = event(&e);
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if(key == Emouse) {
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m = e.mouse;
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if(m.buttons & 4) {
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if(emenuhit(3, &m, &menu) == 0)
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exits(0);
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}
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} else if(key == timer) {
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redraw(screen);
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}
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}
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}
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