ref: b08fefc3393413040f8fe2c0f91e931df8dfde38
dir: /dec.c/
#include <u.h>
#include <libc.h>
#include <draw.h>
#include <thread.h>
#include <mouse.h>
#include <keyboard.h>
#include "a.h"
enum { Padding = 12, };
u8int
u8(Buffer *buf, int index)
{
return (u8int)buf->data[index];
}
s8int
s8(Buffer *buf, int index)
{
return (s8int)buf->data[index];
}
u16int
u16(Buffer *buf, int index)
{
int i;
u16int r;
r = 0;
for(i = 0; i < 2 && index + i < buf->count; i++)
r += ((u16int)buf->data[index+i]) << 8*i;
return r;
}
s16int
s16(Buffer *buf, int index)
{
int i;
s16int r;
r = 0;
for(i = 0; i < 2 && index + i < buf->count; i++)
r += ((s16int)buf->data[index+i]) << 8*i;
return r;
}
u32int
u32(Buffer *buf, int index)
{
int i;
u32int r;
r = 0;
for(i = 0; i < 4 && index + i < buf->count; i++)
r += ((u32int)buf->data[index+i]) << 8*i;
return r;
}
s32int
s32(Buffer *buf, int index)
{
int i;
s32int r;
r = 0;
for(i = 0; i < 4 && index + i < buf->count; i++)
r += ((s32int)buf->data[index+i]) << 8*i;
return r;
}
u64int
u64(Buffer *buf, int index)
{
int i;
u64int r;
r = 0;
for(i = 0; i < 8 && index + i < buf->count; i++)
r += ((u64int)buf->data[index+i]) << 8*i;
return r;
}
s64int
s64(Buffer *buf, int index)
{
int i;
s64int r;
r = 0;
for(i = 0; i < 8 && index + i < buf->count; i++)
r += ((s64int)buf->data[index+i]) << 8*i;
return r;
}
float
f32(Buffer *buf, int index)
{
union { uchar b[4]; float f; } v;
int i;
for(i = 0; i < 4 && index + i < buf->count; i++)
v.b[i] = buf->data[index + i];
return v.f;
}
double
f64(Buffer *buf, int index)
{
union { uchar b[8]; double d; } v;
int i;
for(i = 0; i < 8 && index + i < buf->count; i++)
v.b[i] = buf->data[index + i];
return v.d;
}
void
dec(Buffer *buf, int index, Image *b, Point o, Point p, Image *fg)
{
char tmp[64] = {0};
int n;
p = string(b, p, fg, ZP, font, " in: ");
for(n = 0; n < 8 && index + n < buf->count; n++){
snprint(tmp, sizeof tmp, "%02X ", buf->data[index + n]);
p = string(b, p, fg, ZP, font, tmp);
}
p = addpt(o, Pt(Padding, 2*Padding + font->height));
snprint(tmp, sizeof tmp, "%5s %-20ud %5s %-20d", "u8:", u8(buf, index), "s8:", s8(buf, index));
string(b, p, fg, ZP, font, tmp);
p.y += font->height;
snprint(tmp, sizeof tmp, "%5s %-20ud %5s %-20d", "u16:", u16(buf, index), "s16:", s16(buf, index));
string(b, p, fg, ZP, font, tmp);
p.y += font->height;
snprint(tmp, sizeof tmp, "%5s %-20ud %5s %-20d", "u32:", u32(buf, index), "s32:", s32(buf, index));
string(b, p, fg, ZP, font, tmp);
p.y += font->height;
snprint(tmp, sizeof tmp, "%5s %-20llud %5s %-20lld", "u64:", u64(buf, index), "s64:", s64(buf, index));
string(b, p, fg, ZP, font, tmp);
p.y += font->height;
snprint(tmp, sizeof tmp, "%5s %-20e %5s %-20e", "f32:", f32(buf, index), "f64:", f64(buf, index));
string(b, p, fg, ZP, font, tmp);
}
void
showdec(Buffer *buf, int index, Mousectl *mctl, Keyboardctl *kctl)
{
Alt alts[3];
Rectangle r, sc;
Point o, p;
Image *b, *save, *bg, *fg, *bord;
int done, h, w, sw;
Mouse m;
Rune k;
alts[0].op = CHANRCV;
alts[0].c = mctl->c;
alts[0].v = &m;
alts[1].op = CHANRCV;
alts[1].c = kctl->c;
alts[1].v = &k;
alts[2].op = CHANEND;
alts[2].c = nil;
alts[2].v = nil;
while(nbrecv(kctl->c, nil)==1)
;
bg = allocimagemix(display, DPaleyellow, DWhite);
bord = allocimage(display, Rect(0,0,1,1), screen->chan, 1, DYellowgreen);
fg = allocimage(display, Rect(0,0,1,1), screen->chan, 1, 0x000000ff);
done = 0;
save = nil;
sw = stringwidth(font, " ");
h = Padding + 6*font->height + Padding + Padding;
w = Padding + 5*sw + 20*sw + 2*sw + 5*sw + 20*sw + Padding;
b = screen;
sc = b->clipr;
replclipr(b, 0, b->r);
while(!done){
o = addpt(screen->r.min, Pt((Dx(screen->r)-w)/2, (Dy(screen->r)-h)/2));
r = Rect(o.x, o.y, o.x+w, o.y+h);
if(save==nil){
save = allocimage(display, r, b->chan, 0, DNofill);
if(save==nil)
break;
draw(save, r, b, nil, r.min);
}
draw(b, r, bg, nil, ZP);
border(b, r, 2, bord, ZP);
p = addpt(o, Pt(Padding, Padding));
dec(buf, index, b, o, p, fg);
flushimage(display, 1);
if(b!=screen || !eqrect(screen->clipr, sc)){
freeimage(save);
save = nil;
}
b = screen;
sc = b->clipr;
replclipr(b, 0, b->r);
switch(alt(alts)){
default:
continue;
break;
case 1:
done = (k=='\n' || k==Kesc);
break;
case 0:
done = m.buttons&1 && ptinrect(m.xy, r);
break;
}
if(save){
draw(b, save->r, save, nil, save->r.min);
freeimage(save);
save = nil;
}
}
replclipr(b, 0, sc);
flushimage(display, 1);
freeimage(bg);
freeimage(fg);
}