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eminem.html
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<!doctype html>
<meta charset='utf-8'/>
<meta name='viewport' content='width=device-width, initial-scale=1'/>
<meta name='theme-color' content='#000000'/>
<title>
Eminem - 3 a.m. - Segmented Clock
</title>
<style type='text/css'>
*, *::before, *::after {
box-sizing: border-box;
}
:root {
accent-color: var(--accent);
color-scheme: dark;
}
body {
overflow: hidden;
}
body, .btn, input, select {
font-family: 'Roboto', sans-serif;
font-size: 1rem;
margin: 0;
}
body, .btn, select {
background-color: var(--bg);
color: var(--text);
}
.btn, input, select, .label {
display: block;
padding: .5em;
border-width: 1px;
}
input {
width: 100%;
}
select {
min-width: 8rem;
}
.abs {
position:absolute;
}
.btn {
border-color: rgba(0, 0, 0, .25);
border-radius: 0;
border-style: outset;
border-width: 1px;
background: 0;
color: #808080;
cursor: pointer;
list-style: none;
min-width: 2em;
text-align: center;
text-decoration: none;
user-select: none;
}
.btn:active {
border-style: inset;
}
.button-label {
font-size:140px;
letter-spacing:10px;
}
.btn-left {
border-width: 1px 1px 0 0;
padding: 0;
width: 2em;
}
.btn-left:first-child {
border-top-width: 0;
}
.column { display:flex; flex-direction:column; }
.height-full { height: 100%; }
.tall { line-height: 7; }
.fade { opacity: 0.5; }
.grow { flex-grow: 1; }
.hotkey { text-decoration: underline dotted; }
.margin-bottom { margin-bottom: .5em; }
.margin-top { margin-top: .5em; }
.round { border-radius: 100%; }
.row { display: flex; }
.sideways { writing-mode: vertical-lr; }
#LCD {
margin: 0 auto;
max-height: 100vh;
align-items:center;
justify-content: center;
}
</style>
<div class='abs row' style='top:0;bottom:0;left:0;right:0;'>
<div class='column'>
<details class='grow'>
<summary accesskey='s' title='Settings' class='btn btn-left height-full hotkey'>
S
</summary>
<div class='abs fade column' style="top:0; left:2em; right: 2em; z-index:2;">
<label class='row pad margin-bottom'>
<span class='label'><span class='hotkey'>O</span>ffset</span>
<input id='offset' value='0' type='range' max='82800000' step='3600000' onInput='synchronize()' accesskey='o'>
</label>
<label class='row pad margin-bottom'>
<span class='label'><span class='hotkey'>T</span>heme</span>
<select id='theme' onChange='setTheme(this.value)' accesskey='t'></select>
</label>
</div>
</details>
<a href='..' accesskey='h' class='btn btn-left hotkey tall'>
<span class='hotkey'>H</span>
</a>
</div>
<div id='LCD' class='row grow'>
<canvas id='face' class='abs'></canvas>
</div>
</div>
<script type='text/javascript'>
const _ = void 0
const doc = document
const $ = doc.querySelector.bind(doc)
const eid = doc.getElementById.bind(doc)
let palettes
const color_palettes = {
'amber': '#E2A71E',
'black': '#000000',
'blue': '#0080DB',
'cyan': '#00F0F0',
'green': '#00ED00',
'magenta': '#F000F0',
'red': '#F10000',
'yellow': '#F0F000',
'white': '#F1EDDB',
}
const themes = {
Dark: {
bg: color_palettes.black,
color: color_palettes.white,
},
Light: {
bg: color_palettes.white,
color: color_palettes.black,
text: color_palettes.black,
},
Amber: {
bg: color_palettes.black,
color: color_palettes.amber,
},
Blue: {
bg: color_palettes.black,
color: color_palettes.blue,
},
Cyan: {
bg: color_palettes.black,
color: color_palettes.cyan,
},
Green: {
bg: color_palettes.black,
color: color_palettes.green,
},
Magenta: {
bg: color_palettes.black,
color: color_palettes.magenta,
},
Red: {
bg: color_palettes.black,
color: color_palettes.red,
},
Yellow: {
bg: color_palettes.black,
color: color_palettes.yellow,
},
}
for(k in themes){
const theme = themes[k]
Object.assign(theme, color_palettes)
}
const colors = ['accent', 'bg', 'color', 'text'].concat(Object.keys(color_palettes))
eid('theme').innerHTML = Object.keys(themes).map(t => `<option value='${t}'>${t}</option>`).join('')
const can = eid('face')
const c = can.getContext('2d')
const height = 23
const width = 52
const pad_h = -7
const pad_v = 2
const char_height = 10
const char_width = 14
const grid_w = char_width + 0
const grid_w2 = grid_w * 2
// zoom
let z = 1
const {cos, min, sin} = Math
const offset_el = eid('offset')
const lcd_el = eid('LCD')
function resize(){
const rect = lcd_el.getBoundingClientRect()
const scale = window.devicePixelRatio || 1
z = min(
(rect.height / height),
(rect.width / width),
)
can.height = height * scale * z
can.width = width * scale * z
can.style.height = (height*z)+'px'
can.style.width = (width*z)+'px'
c.scale(scale, scale)
synchronize()
}
window.addEventListener('resize', resize)
doc.addEventListener('keydown', function(event){
if(event.repeat){ return }
const k = event.key
const el = (k === ' ' || k === 'Enter') ?
doc.activeElement
: $(`[accesskey='${k}']`)
if(!el){ return }
const tag = el.tagName
let ev
if(el.hasAttribute('onPointerDown')){ ev = new MouseEvent('pointerdown') }
else if(tag === 'A' || tag === 'SUMMARY'){ ev = new MouseEvent('click') }
else {
el.focus()
return
}
console.log(k, el, ev)
el.dispatchEvent(ev)
})
function setTheme(theme){
palettes = themes[theme]
$(`#theme [value=${theme}]`).selected = true
palettes.accent = palettes.color
colors.forEach(color => {
doc.documentElement.style.setProperty('--'+color, palettes[color])
})
$(`meta[name='theme-color']`).setAttribute('content', palettes.bg)
synchronize()
}
// display at the start of each second
function synchronize(){
window.clearTimeout(window.synchronizeTimeout)
const offset = Number(offset_el.value)
const t = new Date(Date.now() + offset)
display(t)
const r = 1000 - (t % 1000)
window.synchronizeTimeout = window.setTimeout(synchronize, r)
}
function shape(path, x, y, m = 1){
m = m*z
c.beginPath()
c.moveTo((path[0][0] + x)*m, (path[0][1] + y)*m)
for(i=1; i<path.length; ++i){
c.lineTo((path[i][0] + x)*m, (path[i][1] + y)*m)
}
c.fill()
}
const tau = 2 * Math.PI
const db = [[4,11.625], [6,11.625], [6,9], [5,8.25], [4,9]]
const dc = [[.25,14], [9.75,14], [7.75,12], [2.25,12]]
const dl = [[0,13.75], [2,11.75], [2,8.25], [1,7.25], [0,8.25]]
const dlt = [[-.375,14], [-4,14], [-3,12], [-.375,12]]
const drt = [[10.375,14], [14,14], [13,12], [10.375,12]]
const dr = [[10,13.75], [8,11.75], [8,8.25], [9,7.25], [10,8.25]]
const ult = [[-.375,0], [-4,0], [-3,2], [-.375,2]]
const urt = [[10.375,0], [14,0], [13,2], [10.375,2]]
const mc = [[1.25, 7], [2.25,6], [7.75,6], [8.75, 7], [7.75,8], [2.25,8]]
const mr = [[5,6], [7.75,6], [8.75, 7], [7.75,8], [5,8]]
const mlt = [[-4, 7], [-3,6], [-.25,6], [.75, 7], [-.25,8], [-3,8]]
const mrt = [[14, 7], [13,6], [10.25,6], [9.25, 7], [10.25,8], [13.25,8]]
const ub = [[4,2.375], [6,2.375], [6,5], [5,5.75], [4,5]]
const uc = [[.25,0], [9.75,0], [7.75,2], [2.25,2]]
const ul = [[0,.25], [2,2.25], [2,5.75], [1,6.75], [0,5.75]]
const ur = [[10,.25], [8,2.25], [8,5.75], [9,6.75], [10,5.75]]
const segs = [ur, ul, uc, dr, dl, dc, mc, ub, db, ult, dlt, urt, drt, mlt, mrt, mr]
const char_masks = {
'0': 0b111111,
'1': 0b1001,
'2': 0b1110101,
'3': 0b1101101,
'4': 0b1001011,
'5': 0b1101110,
'6': 0b1111110,
'7': 0b1101,
'8': 0b1111111,
'9': 0b1101111,
' ': 0,
'-': 0b1000000,
':': 0b110000000,
'A': 0b1011111,
'B': 0b1000000110101101,
'C': 0b110110,
'D': 0b110101101,
'E': 0b1110110,
'F': 0b1010110,
'G': 0b1000000000111110,
'H': 0b1011011,
'I': 0b110100100,
'J': 0b111001,
'K': 0b1100001011011,
'L': 0b110010,
'M': 0b10011111,
'N': 0b0000011111,
'O': 0b111111,
'P': 0b1010111,
'Q': 0b1000000111111,
'R': 0b1001011111,
'S': 0b1101110,
'T': 0b110000100,
'T2': 0b1000010110,
'T3': 0b100000001101,
'U': 0b111011,
'V': 0b100010011,
'W': 0b100111011,
'X': 0b1111001011011,
'Y': 0b101000011,
'Z': 0b1110101,
'?': 0b11111111111,
}
function mask_segs(mask){
let s = []
let i = 0
let i_mask = 1
while(i_mask <= mask){
if(mask & i_mask){
s.push(segs[i])
}
++i
i_mask = i_mask << 1
}
return s
}
const char_paths = Object.fromEntries(
Object.entries(char_masks).map(
([k, mask], i) => [k, mask_segs(mask)]
)
)
function draw_char(s, x, y, m = 1){
(char_paths[s] || char_paths['?']).forEach(
path => shape(path, x, y, m)
)
}
function draw_str(chars, x, y, m = 1, gw = grid_w){
if(!(chars instanceof Array)){
chars = (chars+'').split('')
}
chars.forEach((s, i) => {
draw_char(s, x + i * gw, y, m)
})
}
function display(t){
let hours = t.getHours()
const suffix = (hours < 12 ? 'A' : 'P') + 'M'
hours = hours % 12
if(hours === 0){ hours = 12 }
const time = (hours + suffix).padStart(4, ' ')
c.fillStyle = palettes.color
c.clearRect(0, 0, width*z, height*z)
let x = pad_h, y = pad_v, m = 0.25
// draw_str('ELEMENO', (x+21)/m, y/m, m)
draw_str('EMINEM', (x+23)/m, y/m, m)
y += 6
m = 1
draw_str(time, x/m, y/m, m)
}
setTheme('Red')
resize()
</script>