mikael-lovqvists-claude-agent/phone-barcode
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Initial barcode scanner webapp

Browse Source 
Camera-based barcode scanner using ZXing for decoding. Requests wide
video (256x2048), rotates to landscape for decoding, applies contrast
boost and tries both HybridBinarizer and GlobalHistogramBinarizer.
Includes camera selector, manual/auto focus controls, and focus slider.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
This commit is contained in:
mikael-lovqvists-claude-agent
2026-03-21 23:41:23 +00:00
commit b98534214f
6 changed files with 615 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

170
index.html Normal file
View File

@@ -0,0 +1,170 @@
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=no">
<title>Barcode Scanner</title>
<style>
*, *::before, *::after {
box-sizing: border-box;
margin: 0;
padding: 0;
}
:root {
--accent: #00e87a;
--dim: #5a6475;
--surface: #12161c;
}
html, body {
width: 100%;
height: 100%;
background: #000;
font-family: 'Courier New', monospace;
overflow: hidden;
}
#app {
display: flex;
flex-direction: column;
width: 100%;
height: 100%;
}
#camera-view {
position: relative;
width: 100%;
flex: 1;
background: #000;
}
video {
position: absolute;
inset: 0;
width: 100%;
height: 100%;
object-fit: contain;
}
/* Transparent overlay — only draws scan lines */
#overlay {
position: absolute;
inset: 0;
width: 100%;
height: 100%;
}
#debug {
position: absolute;
top: 6px;
left: 8px;
font-size: 11px;
color: rgba(255,255,255,0.6);
text-shadow: 0 1px 2px #000;
pointer-events: none;
line-height: 1.5;
}
/* Bottom result panel */
#bottom-panel {
flex-shrink: 0;
display: flex;
flex-direction: column;
align-items: center;
gap: 8px;
padding: 12px 16px 18px;
background: var(--surface);
border-top: 1px solid #1e2530;
}
#result {
width: 100%;
min-height: 44px;
padding: 10px 14px;
border-radius: 8px;
background: #181e28;
border: 1px solid #1e2a38;
font-size: 14px;
color: var(--dim);
text-align: center;
word-break: break-all;
transition: color 0.15s, border-color 0.15s, background 0.15s;
display: flex;
align-items: center;
justify-content: center;
}
#result.found {
color: var(--accent);
border-color: var(--accent);
background: #0d1f15;
font-weight: bold;
font-size: 16px;
}
#result.error {
color: #ff5555;
border-color: #ff5555;
}
#focus-row {
display: none;
width: 100%;
align-items: center;
gap: 8px;
color: #dce4ef;
font-size: 13px;
}
#focus-slider {
flex: 1;
accent-color: var(--accent);
}
#focus-val {
min-width: 40px;
text-align: right;
color: var(--accent);
}
#start-btn {
padding: 13px 30px;
background: var(--accent);
color: #000;
border: none;
border-radius: 8px;
font-family: inherit;
font-size: 15px;
font-weight: bold;
cursor: pointer;
}
</style>
</head>
<body>
<div id="app">
<div id="camera-view">
<video id="video" autoplay playsinline muted></video>
<canvas id="overlay"></canvas>
<div id="debug"></div>
</div>
<div id="bottom-panel">
<div id="cam-info" style="width:100%;font-size:11px;color:#5a6475;word-break:break-all;"></div>
<div id="result">Point camera at a barcode</div>
<div id="focus-row">
<label style="display:flex;align-items:center;gap:4px;cursor:pointer;">
<input id="focus-auto" type="checkbox" checked>
Auto
</label>
<input id="focus-slider" type="range" min="0" max="1.62" step="0.01" value="0.3" disabled>
<span id="focus-val">0.30m</span>
</div>
<select id="camera-select" style="display:none; width:100%; padding:8px; background:#181e28; color:#dce4ef; border:1px solid #1e2a38; border-radius:8px; font-family:inherit;"></select>
<button id="start-btn">Start Camera</button>
</div>
</div>
<script src="vendor/zxing.min.js"></script>
<script type="module" src="app.mjs"></script>
</body>
</html>