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| 1 | +<!-- vim: sw=2 ts=2 expandtab smartindent ft=javascript |
| 2 | +--> |
| 3 | +<!DOCTYPE html> |
| 4 | +<html lang="en"> |
| 5 | + <head> |
| 6 | + <meta charset="utf-8" /> |
| 7 | + <title>Proximity Slider Demo</title> |
| 8 | + <style> |
| 9 | +document, body { margin: 2rem; } |
| 10 | + |
| 11 | +#sorted_region { |
| 12 | + display: flex; |
| 13 | + flex-direction: row; |
| 14 | + gap: 0.3rem; |
| 15 | + flex-wrap: wrap; |
| 16 | + width: 100%; |
| 17 | +} |
| 18 | +.box { |
| 19 | + width: 5rem; |
| 20 | + height: 5rem; |
| 21 | + border-radius: 1.5rem; |
| 22 | + background-color: navy; |
| 23 | + aspect-ratio: 1; |
| 24 | + color: white; |
| 25 | + font-family: monospace; |
| 26 | + |
| 27 | + font-size: 1rem; |
| 28 | + |
| 29 | + display: flex; |
| 30 | + justify-content: center; |
| 31 | + align-items: center; |
| 32 | +} |
| 33 | + |
| 34 | +#proximity_slider { |
| 35 | + width: 50rem; |
| 36 | + height: 0.2rem; |
| 37 | + margin: 2rem; |
| 38 | + background-color: red; |
| 39 | + |
| 40 | + position: relative; |
| 41 | + |
| 42 | + #proximity_slider_handle { |
| 43 | + position: relative; |
| 44 | + height: 2rem; |
| 45 | + translate: 0rem -1rem; |
| 46 | + width: 2rem; |
| 47 | + background-color: black; |
| 48 | + |
| 49 | + color: white; |
| 50 | + font-family: monospace; |
| 51 | + font-size: 1.8rem; |
| 52 | + padding: 0.2rem; |
| 53 | + |
| 54 | + display: flex; |
| 55 | + justify-content: center; |
| 56 | + align-items: center; |
| 57 | + |
| 58 | + &:hover { |
| 59 | + scale: 1.2; |
| 60 | + cursor: pointer; |
| 61 | + } |
| 62 | + } |
| 63 | +} |
| 64 | + |
| 65 | +</style> |
| 66 | + </head> |
| 67 | + |
| 68 | + <body> |
| 69 | + <div id="proximity_slider"> |
| 70 | + <div id="proximity_slider_handle"> 0 </div> |
| 71 | + </div> |
| 72 | + |
| 73 | + <div id="sorted_region"></div> |
| 74 | + <script>"use strict"; |
| 75 | + |
| 76 | +const BOX_COUNT = 50; |
| 77 | +const entries = Array.from({ length: BOX_COUNT }, (_, i) => BOX_COUNT * Math.random()); |
| 78 | + |
| 79 | +let mouse_down = false; |
| 80 | +proximity_slider_handle.onmousedown = () => mouse_down = true; |
| 81 | +window.onmouseup = () => mouse_down = false; |
| 82 | +window.onmousedown = ev => ev.preventDefault(); |
| 83 | +window.onmousemove = ev => { |
| 84 | + ev.preventDefault(); |
| 85 | + |
| 86 | + if (mouse_down) { |
| 87 | + const bounds = proximity_slider.getBoundingClientRect(); |
| 88 | + const x = Math.max(bounds.left, Math.min(bounds.right, ev.clientX)); |
| 89 | + const t = (x - bounds.x) / bounds.width; |
| 90 | + const i = Math.round(t * BOX_COUNT); |
| 91 | + proximity_slider_handle.textContent = i; |
| 92 | + proximity_slider_handle.style.translate = `calc(${x - bounds.x}px - 50%) -1rem`; |
| 93 | + |
| 94 | + render_sorted(i); |
| 95 | + } |
| 96 | +}; |
| 97 | + |
| 98 | +render_sorted(0); |
| 99 | + |
| 100 | +function render_sorted(goal) { |
| 101 | + sorted_region.innerHTML = ''; |
| 102 | + entries.sort((a, b) => Math.abs(a - goal) - Math.abs(b - goal)); |
| 103 | + for (let i = 0; i < BOX_COUNT; i++) { |
| 104 | + const div = document.createElement('div'); |
| 105 | + div.className = 'box' |
| 106 | + div.textContent = entries[i].toFixed(1); |
| 107 | + sorted_region.appendChild(div); |
| 108 | + } |
| 109 | +} |
| 110 | + </script> |
| 111 | + </body> |
| 112 | +</html> |
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