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#include <u.h>
#include <libc.h>
#include <thread.h>
#include <draw.h>
#include <mouse.h>
#include <keyboard.h>
#include "../libgeometry/geometry.h"
RFrame worldrf;
void resized(void);
Point
toscreen(Point2 p)
{
p = invrframexform(p, worldrf);
return Pt(p.x,p.y);
}
Point2
fromscreen(Point p)
{
return rframexform(Pt2(p.x,p.y,1), worldrf);
}
void
redraw(void)
{
lockdisplay(display);
draw(screen, screen->r, display->black, nil, ZP);
line(screen, toscreen(Pt2(0,512,1)), toscreen(Pt2(0,-512,1)), 0, 0, 0, display->white, ZP);
line(screen, toscreen(Pt2(512,0,1)), toscreen(Pt2(-512,0,1)), 0, 0, 0, display->white, ZP);
flushimage(display, 1);
unlockdisplay(display);
}
void
rmb(Mousectl *, Keyboardctl *)
{
}
void
lmb(Mousectl *mc, Keyboardctl *)
{
Point2 mpos;
mpos = fromscreen(mc->xy);
fprint(2, "%v\n", mpos);
}
void
mouse(Mousectl *mc, Keyboardctl *kc)
{
if((mc->buttons&1) != 0)
lmb(mc, kc);
if((mc->buttons&4) != 0)
rmb(mc, kc);
}
void
key(Rune r)
{
switch(r){
case Kdel:
case 'q':
threadexitsall(nil);
}
}
void
usage(void)
{
fprint(2, "usage: %s\n", argv0);
exits("usage");
}
void
threadmain(int argc, char *argv[])
{
Mousectl *mc;
Keyboardctl *kc;
Rune r;
GEOMfmtinstall();
ARGBEGIN{
default: usage();
}ARGEND;
if(argc > 0)
usage();
if(newwindow(nil) < 0)
sysfatal("newwindow: %r");
if(initdraw(nil, nil, nil) < 0)
sysfatal("initdraw: %r");
if((mc = initmouse(nil, screen)) == nil)
sysfatal("initmouse: %r");
if((kc = initkeyboard(nil)) == nil)
sysfatal("initkeyboard: %r");
worldrf.p = Pt2(screen->r.min.x+Dx(screen->r)/2,screen->r.max.y-Dy(screen->r)/2,1);
worldrf.bx = Vec2(1, 0);
worldrf.by = Vec2(0,-1);
display->locking = 1;
unlockdisplay(display);
redraw();
for(;;){
enum { MOUSE, RESIZE, KEYBOARD };
Alt a[] = {
{mc->c, &mc->Mouse, CHANRCV},
{mc->resizec, nil, CHANRCV},
{kc->c, &r, CHANRCV},
{nil, nil, CHANEND}
};
switch(alt(a)){
case MOUSE:
mouse(mc, kc);
break;
case RESIZE:
resized();
break;
case KEYBOARD:
key(r);
break;
}
redraw();
}
}
void
resized(void)
{
lockdisplay(display);
if(getwindow(display, Refnone) < 0)
sysfatal("couldn't resize");
unlockdisplay(display);
worldrf.p = Pt2(screen->r.min.x+Dx(screen->r)/2,screen->r.max.y-Dy(screen->r)/2,1);
redraw();
}
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