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#include <u.h>
#include <libc.h>
#include <thread.h>
#include <draw.h>
#include <mouse.h>
#include <keyboard.h>
#include <geometry.h>
#include "dat.h"
#include "fns.h"
/* palette colors */
enum {
PCBlack,
PCWhite,
NCOLOR
};
RFrame worldrf;
Image *pal[NCOLOR];
Image *background;
Canvas *curcanvas;
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
initpalette(void)
{
pal[PCBlack] = eallocimage(display, Rect(0,0,1,1), screen->chan, 1, DBlack);
pal[PCWhite] = eallocimage(display, Rect(0,0,1,1), screen->chan, 1, DWhite);
}
Image*
gencheckerboard(int w, int h)
{
Image *i, *dark, *light;
int x, y;
i = eallocimage(display, Rect(0,0,2*w,2*h), screen->chan, 1, DNofill);
dark = eallocimage(display, Rect(0,0,w,h), screen->chan, 0, DBlack&~0x7f);
light = eallocimage(display, Rect(0,0,w,h), screen->chan, 0, DBlack&~0xdf);
for(y = 0; y < h; y += h)
for(x = 0; x < w; x += w)
draw(i, Rect(x,y,x+w,y+h), (x+y) % 2? light: dark, ZP);
freeimage(dark);
freeimage(light);
return i;
}
void
drawlayer(Canvas *c, Layer *l)
{
draw(c->image, c->image->r, l->image, nil, ZP);
}
void
drawcanvas(Canvas *c)
{
}
void
redraw(void)
{
lockdisplay(display);
draw(screen, screen->r, pal[PCBlack], nil, ZP);
flushimage(display, 1);
unlockdisplay(display);
}
void
resized(void)
{
lockdisplay(display);
if(getwindow(display, Refnone) < 0)
sysfatal("resize failed");
unlockdisplay(display);
worldrf.p = Pt2(screen->r.min.x,screen->r.max.y,1);
redraw();
}
void
mouse(Mousectl *mc, Keyboardctl *)
{
}
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;
ARGBEGIN{
default: usage();
}ARGEND;
if(argc > 0)
usage();
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,screen->r.max.y,1);
worldrf.bx = Vec2(1, 0);
worldrf.by = Vec2(0,-1);
initpalette();
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();
}
}
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