diff options
Diffstat (limited to 'main.c')
| -rw-r--r-- | main.c | 202 |
1 files changed, 202 insertions, 0 deletions
@@ -0,0 +1,202 @@ +#include <u.h> +#include <libc.h> +#include <thread.h> +#include <draw.h> +#include <memdraw.h> +#include <mouse.h> +#include <keyboard.h> +#include "dat.h" +#include "fns.h" + +Mousectl *mctl; +ulong kdown; +double Δt; +Image *screenb; +Memimage *fb; +Memimage *bg, *fg; + +Rune keys[Ke] = { + [K↑] Kup, + [K↓] Kdown, + [K←] Kleft, + [K→] Kright +}; + +Memimage* +eallocmemimage(Rectangle r, ulong chan) +{ + Memimage *i; + + i = allocmemimage(r, chan); + if(i == nil) + sysfatal("allocmemimage: %r"); + memfillcolor(i, DTransparent); + return i; +} + +Memimage* +rgb(ulong c) +{ + Memimage *i; + + i = eallocmemimage(Rect(0,0,1,1), screen->chan); + i->flags |= Frepl; + i->clipr = Rect(-1e6, -1e6, 1e6, 1e6); + memfillcolor(i, c); + return i; +} + +void +kbdproc(void*) +{ + Rune r, *a; + char buf[128], *s; + int fd, n; + + threadsetname("kbdproc"); + if((fd = open("/dev/kbd", OREAD)) < 0) + sysfatal("kbdproc: %r"); + memset(buf, 0, sizeof buf); + for(;;){ + if(buf[0] != 0){ + n = strlen(buf)+1; + memmove(buf, buf+n, sizeof(buf)-n); + } + if(buf[0] == 0){ + if((n = read(fd, buf, sizeof(buf)-1)) <= 0) + break; + buf[n-1] = 0; + buf[n] = 0; + } + if(buf[0] == 'c'){ + if(utfrune(buf, Kdel)){ + close(fd); + threadexitsall(nil); + } + } + if(buf[0] != 'k' && buf[0] != 'K') + continue; + s = buf+1; + kdown = 0; + while(*s){ + s += chartorune(&r, s); + for(a = keys; a < keys+Ke; a++) + if(r == *a){ + kdown |= 1 << a-keys; + break; + } + } + } +} + +void +drawproc(void *arg) +{ + Channel *c; + + c = arg; + for(;;){ + send(c, nil); + sleep(FPS2MS(60)); + } +} + +void +resetfb(void) +{ + freeimage(screenb); + screenb = allocimage(display, Rect(0,0,Dx(screen->r),Dy(screen->r)), screen->chan, 0, DNofill); + freememimage(fb); + fb = eallocmemimage(Rect(0,0,Dx(screen->r),Dy(screen->r)), screen->chan); +} + +void +redraw(void) +{ + Rectangle r; + Point p; + static Point incp = {1,1}; + + memimagedraw(fb, fb->r, bg, ZP, nil, ZP, SoverD); + for(p.y = 0; p.y < Dy(fb->r); p.y++) + for(p.x = 0; p.x < Dx(fb->r); p.x++) + if(p.x%15 == 0 || p.y%15 == 0) + memimagedraw(fb, Rpt(p, addpt(p, incp)), fg, ZP, nil, ZP, SoverD); + /*for(p = ZP; ptinrect(p, fb->r); p.x++, p.y++) + memimagedraw(fb, Rpt(p, addpt(p, Pt(1,1))), fg, ZP, nil, ZP, SoverD);*/ + for(r = fb->r; r.min.y < fb->r.max.y; r.min.y++){ + r.max.y = r.min.y+1; + loadimage(screenb, r, byteaddr(fb, r.min), bytesperline(r, fb->depth)); + } + lockdisplay(display); + draw(screen, screen->r, screenb, nil, ZP); + flushimage(display, 1); + unlockdisplay(display); +} + + +void +mouse(void) +{ +} + +void +resize(void) +{ + if(getwindow(display, Refnone) < 0) + fprint(2, "can't reattach to window\n"); + resetfb(); + redraw(); +} + +void +usage(void) +{ + fprint(2, "usage: %s\n", argv0); + exits("usage"); +} + +void +threadmain(int argc, char *argv[]) +{ + vlong t0, t; + Channel *drawc; + + ARGBEGIN{ + default: usage(); + }ARGEND; + if(argc) + usage(); + if(initdraw(nil, nil, nil) < 0) + sysfatal("initdraw: %r"); + if(memimageinit() < 0) + sysfatal("memimageinit: %r"); + if((mctl = initmouse(nil, screen)) == nil) + sysfatal("initmouse: %r"); + resetfb(); + bg = rgb(DWhite); + fg = rgb(DBlack); + drawc = chancreate(1, 0); + display->locking = 1; + unlockdisplay(display); + proccreate(kbdproc, nil, mainstacksize); + proccreate(drawproc, drawc, mainstacksize); + t0 = nsec(); + for(;;){ + enum {MOUSE, RESIZE, DRAW}; + Alt a[] = { + {mctl->c, &mctl->Mouse, CHANRCV}, + {mctl->resizec, nil, CHANRCV}, + {drawc, nil, CHANRCV}, + {nil, nil, CHANEND} + }; + switch(alt(a)){ + case MOUSE: mouse(); break; + case RESIZE: resize(); break; + case DRAW: redraw(); break; + } + t = nsec(); + Δt = (t-t0)/1e9; + t0 = t; + } +} |