Subversion Repositories planix.SVN

#include <u.h>
#include <libc.h>
#include <draw.h>
#include <event.h>

Image *hrhand, *minhand;
Image *dots, *back;

Point
circlept(Point c, int r, int degrees)
{
        double rad;
        rad = (double) degrees * PI/180.0;
        c.x += cos(rad)*r;
        c.y -= sin(rad)*r;
        return c;
}

void
redraw(Image *screen)
{
        static int tm, ntm;
        static Rectangle r;
        static Point c;
        static int rad;
        static Image *im;
        int i;
        int anghr, angmin;
        static Tm tms;
        static Tm ntms;

        ntm = time(0);
        if(ntm == tm && eqrect(screen->r, r))
                return;

        ntms = *localtime(ntm);
        anghr = 90-(ntms.hour*5 + ntms.min/12)*6;
        angmin = 90-ntms.min*6;
        tm = ntm;
        tms = ntms;
        r = screen->r;
        c = divpt(addpt(r.min, r.max), 2);
        rad = Dx(r) < Dy(r) ? Dx(r) : Dy(r);
        rad /= 2;
        rad -= 8;

        draw(screen, screen->r, back, nil, ZP);
        for(i=0; i<12; i++)
                fillellipse(screen, circlept(c, rad, i*(360/12)), 2, 2, dots, ZP);

        line(screen, c, circlept(c, (rad*3)/4, angmin), 0, 0, 1, minhand, ZP);
        line(screen, c, circlept(c, rad/2, anghr), 0, 0, 1, hrhand, ZP);

        flushimage(display, 1);
}

void
eresized(int new)
{
        if(new && getwindow(display, Refnone) < 0)
                fprint(2,"can't reattach to window");
        redraw(screen);
}

void
main(int, char**)
{
        Event e;
        Mouse m;
        Menu menu;
        char *mstr[] = {"exit", 0};
        int key, timer;
        int t;

        if (initdraw(0, 0, "clock") < 0)
                sysfatal("initdraw failed");
        back = allocimagemix(display, DPalebluegreen, DWhite);

        hrhand = allocimage(display, Rect(0,0,1,1), CMAP8, 1, DDarkblue);
        minhand = allocimage(display, Rect(0,0,1,1), CMAP8, 1, DPaleblue);
        dots = allocimage(display, Rect(0,0,1,1), CMAP8, 1, DBlue);
        redraw(screen);

        einit(Emouse);
        t = (30*1000);
        timer = etimer(0, t);

        menu.item = mstr;
        menu.lasthit = 0;
        for(;;) {
                key = event(&e);
                if(key == Emouse) {
                        m = e.mouse;
                        if(m.buttons & 4) {
                                if(emenuhit(3, &m, &menu) == 0)
                                        exits(0);
                        }
                } else if(key == timer) {
                        redraw(screen);
                }
        }       
}