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SAPTARSHI-coder merged 1 commit into from
Jun 4, 2026
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feat: add Developer Activity Heatmap Component (#1175) #1246

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70 changes: 70 additions & 0 deletions submissions/examples/activity-heatmap/README.md
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# Developer Activity Heatmap Component

A GitHub-style contribution heatmap that visualizes activity over time using a grid of color-coded cells with multiple intensity levels. Includes month and day labels, staggered pop-in animation, hover scale effect, and a legend.

## Classes

| Class | Description |
|---|---|
| `ease-heatmap` | Container card with border and background |
| `ease-heatmap-header` | Title and subtitle row |
| `ease-heatmap-title` | Section title |
| `ease-heatmap-subtitle` | Time range subtitle |
| `ease-heatmap-table` | Table structure wrapper |
| `ease-heatmap-months` | Month label row |
| `ease-heatmap-body` | Flex row for day labels and grid |
| `ease-heatmap-days` | Day label column |
| `ease-heatmap-grid` | Grid of activity cells |
| `ease-heatmap-cell` | Individual cell with hover scale |
| `ease-heatmap-lvl-0` | No activity (dim) |
| `ease-heatmap-lvl-1` | Low activity |
| `ease-heatmap-lvl-2` | Medium activity |
| `ease-heatmap-lvl-3` | High activity |
| `ease-heatmap-lvl-4` | Highest activity (brightest) |
| `ease-heatmap-legend` | Legend row |
| `ease-heatmap-legend-label` | Less / More labels |

## Usage

```html
<div class="ease-heatmap">
<div class="ease-heatmap-header">
<h3 class="ease-heatmap-title">Contribution Activity</h3>
<span class="ease-heatmap-subtitle">Last 6 months</span>
</div>

<div class="ease-heatmap-table">
<div class="ease-heatmap-months">
<span></span><span>Jan</span><span>Feb</span><span>Mar</span>
<span>Apr</span><span>May</span><span>Jun</span>
</div>

<div class="ease-heatmap-body">
<div class="ease-heatmap-days">
<span>Mon</span><span></span><span>Wed</span><span></span><span>Fri</span><span></span><span>Sun</span>
</div>

<div class="ease-heatmap-grid">
<span class="ease-heatmap-cell ease-heatmap-lvl-0" title="0 contributions"></span>
<span class="ease-heatmap-cell ease-heatmap-lvl-2" title="5 contributions"></span>
<span class="ease-heatmap-cell ease-heatmap-lvl-4" title="15 contributions"></span>
<!-- ... -->
</div>
</div>
</div>

<div class="ease-heatmap-legend">
<span class="ease-heatmap-legend-label">Less</span>
<span class="ease-heatmap-cell ease-heatmap-lvl-0"></span>
<span class="ease-heatmap-cell ease-heatmap-lvl-1"></span>
<span class="ease-heatmap-cell ease-heatmap-lvl-2"></span>
<span class="ease-heatmap-cell ease-heatmap-lvl-3"></span>
<span class="ease-heatmap-cell ease-heatmap-lvl-4"></span>
<span class="ease-heatmap-legend-label">More</span>
</div>
</div>
```

## Why it fits EaseMotion CSS

Pure CSS heatmap with staggered pop-in cell animation, smooth hover scale effect, and color-coded intensity levels using design tokens. Responsive grid layout. Respects `prefers-reduced-motion`.
132 changes: 132 additions & 0 deletions submissions/examples/activity-heatmap/demo.html
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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<title>Activity Heatmap — EaseMotion CSS</title>
<link rel="stylesheet" href="style.css" />
<style>
*, *::before, *::after { box-sizing: border-box; }
body {
background: #0f0e17;
color: #fff;
font-family: 'Inter', system-ui, sans-serif;
padding: 3rem 2rem;
min-height: 100vh;
display: flex;
flex-direction: column;
align-items: center;
}
h1 { font-size: 2rem; margin-bottom: 0.25rem; text-align: center; }
.subtitle { color: rgba(255,255,255,0.5); margin-bottom: 3rem; text-align: center; }
</style>
</head>
<body>
<h1>Activity Heatmap</h1>
<p class="subtitle">GitHub-style contribution activity visualization — Issue #1175</p>

<div class="ease-heatmap">

<div class="ease-heatmap-header">
<h3 class="ease-heatmap-title">Contribution Activity</h3>
<span class="ease-heatmap-subtitle">Last 6 months</span>
</div>

<div class="ease-heatmap-table">

<!-- Month labels -->
<div class="ease-heatmap-months">
<span></span>
<span>Jan</span><span>Feb</span><span>Mar</span>
<span>Apr</span><span>May</span><span>Jun</span>
</div>

<!-- Day labels + grid -->
<div class="ease-heatmap-body">
<div class="ease-heatmap-days">
<span>Mon</span><span></span><span>Wed</span><span></span><span>Fri</span><span></span><span>Sun</span>
</div>

<div class="ease-heatmap-grid">
<span class="ease-heatmap-cell ease-heatmap-lvl-0" title="0 contributions"></span>
<span class="ease-heatmap-cell ease-heatmap-lvl-1" title="1 contribution"></span>
<span class="ease-heatmap-cell ease-heatmap-lvl-2" title="4 contributions"></span>
<span class="ease-heatmap-cell ease-heatmap-lvl-0" title="0 contributions"></span>
<span class="ease-heatmap-cell ease-heatmap-lvl-3" title="8 contributions"></span>
<span class="ease-heatmap-cell ease-heatmap-lvl-1" title="2 contributions"></span>
<span class="ease-heatmap-cell ease-heatmap-lvl-0" title="0 contributions"></span>

<span class="ease-heatmap-cell ease-heatmap-lvl-0" title="0 contributions"></span>
<span class="ease-heatmap-cell ease-heatmap-lvl-2" title="5 contributions"></span>
<span class="ease-heatmap-cell ease-heatmap-lvl-4" title="15 contributions"></span>
<span class="ease-heatmap-cell ease-heatmap-lvl-1" title="1 contribution"></span>
<span class="ease-heatmap-cell ease-heatmap-lvl-0" title="0 contributions"></span>
<span class="ease-heatmap-cell ease-heatmap-lvl-2" title="3 contributions"></span>
<span class="ease-heatmap-cell ease-heatmap-lvl-1" title="1 contribution"></span>

<span class="ease-heatmap-cell ease-heatmap-lvl-3" title="9 contributions"></span>
<span class="ease-heatmap-cell ease-heatmap-lvl-0" title="0 contributions"></span>
<span class="ease-heatmap-cell ease-heatmap-lvl-1" title="2 contributions"></span>
<span class="ease-heatmap-cell ease-heatmap-lvl-2" title="4 contributions"></span>
<span class="ease-heatmap-cell ease-heatmap-lvl-4" title="18 contributions"></span>
<span class="ease-heatmap-cell ease-heatmap-lvl-0" title="0 contributions"></span>
<span class="ease-heatmap-cell ease-heatmap-lvl-0" title="0 contributions"></span>

<span class="ease-heatmap-cell ease-heatmap-lvl-1" title="1 contribution"></span>
<span class="ease-heatmap-cell ease-heatmap-lvl-3" title="7 contributions"></span>
<span class="ease-heatmap-cell ease-heatmap-lvl-2" title="6 contributions"></span>
<span class="ease-heatmap-cell ease-heatmap-lvl-4" title="20 contributions"></span>
<span class="ease-heatmap-cell ease-heatmap-lvl-3" title="10 contributions"></span>
<span class="ease-heatmap-cell ease-heatmap-lvl-1" title="2 contributions"></span>
<span class="ease-heatmap-cell ease-heatmap-lvl-0" title="0 contributions"></span>

<span class="ease-heatmap-cell ease-heatmap-lvl-0" title="0 contributions"></span>
<span class="ease-heatmap-cell ease-heatmap-lvl-2" title="3 contributions"></span>
<span class="ease-heatmap-cell ease-heatmap-lvl-4" title="14 contributions"></span>
<span class="ease-heatmap-cell ease-heatmap-lvl-0" title="0 contributions"></span>
<span class="ease-heatmap-cell ease-heatmap-lvl-1" title="1 contribution"></span>
<span class="ease-heatmap-cell ease-heatmap-lvl-0" title="0 contributions"></span>
<span class="ease-heatmap-cell ease-heatmap-lvl-3" title="11 contributions"></span>

<span class="ease-heatmap-cell ease-heatmap-lvl-2" title="4 contributions"></span>
<span class="ease-heatmap-cell ease-heatmap-lvl-1" title="2 contributions"></span>
<span class="ease-heatmap-cell ease-heatmap-lvl-0" title="0 contributions"></span>
<span class="ease-heatmap-cell ease-heatmap-lvl-3" title="8 contributions"></span>
<span class="ease-heatmap-cell ease-heatmap-lvl-4" title="16 contributions"></span>
<span class="ease-heatmap-cell ease-heatmap-lvl-2" title="5 contributions"></span>
<span class="ease-heatmap-cell ease-heatmap-lvl-0" title="0 contributions"></span>

<span class="ease-heatmap-cell ease-heatmap-lvl-1" title="1 contribution"></span>
<span class="ease-heatmap-cell ease-heatmap-lvl-0" title="0 contributions"></span>
<span class="ease-heatmap-cell ease-heatmap-lvl-2" title="6 contributions"></span>
<span class="ease-heatmap-cell ease-heatmap-lvl-1" title="2 contributions"></span>
<span class="ease-heatmap-cell ease-heatmap-lvl-3" title="9 contributions"></span>
<span class="ease-heatmap-cell ease-heatmap-lvl-0" title="0 contributions"></span>
<span class="ease-heatmap-cell ease-heatmap-lvl-4" title="22 contributions"></span>

<span class="ease-heatmap-cell ease-heatmap-lvl-3" title="12 contributions"></span>
<span class="ease-heatmap-cell ease-heatmap-lvl-2" title="3 contributions"></span>
<span class="ease-heatmap-cell ease-heatmap-lvl-4" title="17 contributions"></span>
<span class="ease-heatmap-cell ease-heatmap-lvl-0" title="0 contributions"></span>
<span class="ease-heatmap-cell ease-heatmap-lvl-1" title="1 contribution"></span>
<span class="ease-heatmap-cell ease-heatmap-lvl-0" title="0 contributions"></span>
<span class="ease-heatmap-cell ease-heatmap-lvl-2" title="4 contributions"></span>
</div>
</div>

</div>

<!-- Legend -->
<div class="ease-heatmap-legend">
<span class="ease-heatmap-legend-label">Less</span>
<span class="ease-heatmap-cell ease-heatmap-lvl-0"></span>
<span class="ease-heatmap-cell ease-heatmap-lvl-1"></span>
<span class="ease-heatmap-cell ease-heatmap-lvl-2"></span>
<span class="ease-heatmap-cell ease-heatmap-lvl-3"></span>
<span class="ease-heatmap-cell ease-heatmap-lvl-4"></span>
<span class="ease-heatmap-legend-label">More</span>
</div>

</div>
</body>
</html>
185 changes: 185 additions & 0 deletions submissions/examples/activity-heatmap/style.css
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/* ============================================================
EaseMotion CSS — Developer Activity Heatmap Component
Issue #1175
============================================================ */

/* ── Container ────────────────────────────────────────────── */

.ease-heatmap {
width: 100%;
max-width: 560px;
padding: var(--ease-space-5, 1.25rem);
border-radius: var(--ease-radius-lg, 0.75rem);
border: 1.5px solid rgba(255, 255, 255, 0.08);
background: rgba(255, 255, 255, 0.03);
}

/* ── Header ──────────────────────────────────────────────── */

.ease-heatmap-header {
display: flex;
align-items: baseline;
gap: var(--ease-space-3, 0.75rem);
margin-bottom: var(--ease-space-4, 1rem);
}

.ease-heatmap-title {
margin: 0;
font-size: var(--ease-text-base, 1rem);
font-weight: 600;
}

.ease-heatmap-subtitle {
font-size: var(--ease-text-xs, 0.75rem);
color: rgba(255, 255, 255, 0.4);
}

/* ── Table structure ─────────────────────────────────────── */

.ease-heatmap-table {
display: flex;
flex-direction: column;
gap: 2px;
}

/* ── Month labels row ────────────────────────────────────── */

.ease-heatmap-months {
display: grid;
grid-template-columns: 36px repeat(5, 1fr);
margin-bottom: 2px;
padding-left: 36px;
}

.ease-heatmap-months span {
font-size: 0.625rem;
color: rgba(255, 255, 255, 0.3);
text-transform: uppercase;
letter-spacing: 0.04em;
}

/* ── Body (day labels + grid) ────────────────────────────── */

.ease-heatmap-body {
display: flex;
gap: 4px;
}

/* ── Day labels column ───────────────────────────────────── */

.ease-heatmap-days {
display: grid;
grid-template-rows: repeat(7, 14px);
gap: 3px;
margin-top: 0;
min-width: 32px;
}

.ease-heatmap-days span {
display: flex;
align-items: center;
font-size: 0.5625rem;
color: rgba(255, 255, 255, 0.3);
line-height: 1;
}

/* ── Grid ────────────────────────────────────────────────── */

.ease-heatmap-grid {
display: grid;
grid-template-columns: repeat(6, 1fr);
gap: 3px;
flex: 1;
}

.ease-heatmap-cell {
width: 100%;
aspect-ratio: 1;
border-radius: 2px;
transition:
transform var(--ease-speed-fast, 150ms) var(--ease-ease, cubic-bezier(0.4,0,0.2,1)),
opacity var(--ease-speed-fast, 150ms) var(--ease-ease, cubic-bezier(0.4,0,0.2,1));
animation: ease-kf-heatmap-pop 200ms var(--ease-ease-out, cubic-bezier(0,0,0.2,1)) both;
}

.ease-heatmap-cell:hover {
transform: scale(1.5);
opacity: 0.8;
}

/* Staggered reveal */
.ease-heatmap-cell:nth-child(7n+2) { animation-delay: 20ms; }
.ease-heatmap-cell:nth-child(7n+3) { animation-delay: 40ms; }
.ease-heatmap-cell:nth-child(7n+4) { animation-delay: 60ms; }
.ease-heatmap-cell:nth-child(7n+5) { animation-delay: 80ms; }
.ease-heatmap-cell:nth-child(7n+6) { animation-delay: 100ms; }
.ease-heatmap-cell:nth-child(7n+7) { animation-delay: 120ms; }

/* ── Intensity levels ────────────────────────────────────── */

.ease-heatmap-lvl-0 {
background: rgba(255, 255, 255, 0.04);
}

.ease-heatmap-lvl-1 {
background: rgba(34, 197, 94, 0.2);
}

.ease-heatmap-lvl-2 {
background: rgba(34, 197, 94, 0.45);
}

.ease-heatmap-lvl-3 {
background: rgba(34, 197, 94, 0.7);
}

.ease-heatmap-lvl-4 {
background: rgba(34, 197, 94, 1);
}

/* ── Legend ───────────────────────────────────────────────── */

.ease-heatmap-legend {
display: flex;
align-items: center;
justify-content: flex-end;
gap: 4px;
margin-top: var(--ease-space-3, 0.75rem);
}

.ease-heatmap-legend .ease-heatmap-cell {
width: 14px;
aspect-ratio: 1;
}

.ease-heatmap-legend-label {
font-size: 0.625rem;
color: rgba(255, 255, 255, 0.3);
margin: 0 4px;
}

/* ── Keyframes ───────────────────────────────────────────── */

@keyframes ease-kf-heatmap-pop {
from {
opacity: 0;
transform: scale(0);
}
to {
opacity: 1;
transform: scale(1);
}
}

/* ── Reduced motion ──────────────────────────────────────── */

@media (prefers-reduced-motion: reduce) {
.ease-heatmap-cell {
animation: none;
transition: none;
}
.ease-heatmap-cell:hover {
transform: none;
opacity: 1;
}
}
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