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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>Ketchup Snapshot Diff</title>
<link rel="icon" href="favicon.svg" type="image/svg+xml">
<link rel="stylesheet" href="reset.css">
<link rel="stylesheet" href="utopia.css">
<link rel="stylesheet" href="snapshots.css">
</head>
<body>
<nav class="sidebar" id="sidebar">
<div class="sidebar-header">Snapshots</div>
<% snapshots_by_viewport.each_with_index do |(viewport, snapshots), i| -%>
<ul class="sidebar-list<%= " hidden" unless i == 0 %>" data-viewport="<%= viewport %>">
<% snapshots.each do |snap| -%>
<li>
<a href="#<%= viewport %>-<%= snap.name %>" class="sidebar-link">
<%= snap.name.tr("-", " ") %>
<% unless snap.baseline %><span class="sidebar-badge new"><svg width="8" height="8" viewBox="0 0 8 8"><path d="M4 1v6M1 4h6" stroke="currentColor" stroke-width="1.5" stroke-linecap="round"/></svg></span><% end -%>
<% unless snap.current %><span class="sidebar-badge removed"><svg width="8" height="8" viewBox="0 0 8 8"><path d="M1 4h6" stroke="currentColor" stroke-width="1.5" stroke-linecap="round"/></svg></span><% end -%>
</a>
</li>
<% end -%>
</ul>
<% end -%>
</nav>
<main class="content">
<header class="toolbar">
<h1>Snapshot Diff</h1>
<div class="toolbar-controls">
<div class="tab-bar">
<% snapshots_by_viewport.each_with_index do |(viewport, _), i| -%>
<button class="tab<%= " active" if i == 0 %>" data-viewport="<%= viewport %>"><%= viewport.capitalize %></button>
<% end -%>
</div>
<div class="mode-bar">
<button class="mode active" data-mode="side-by-side" title="Side by side (1)">
<svg width="16" height="16" viewBox="0 0 16 16" fill="none"><rect x="1" y="2" width="6" height="12" rx="1" stroke="currentColor" stroke-width="1.5"/><rect x="9" y="2" width="6" height="12" rx="1" stroke="currentColor" stroke-width="1.5"/></svg>
Side by Side
</button>
<button class="mode" data-mode="slider" title="Slider overlay (2)">
<svg width="16" height="16" viewBox="0 0 16 16" fill="none"><rect x="1" y="2" width="14" height="12" rx="1" stroke="currentColor" stroke-width="1.5"/><line x1="8" y1="2" x2="8" y2="14" stroke="currentColor" stroke-width="1.5"/><circle cx="8" cy="8" r="2" fill="currentColor"/></svg>
Slider
</button>
<button class="mode" data-mode="toggle" title="Toggle (3)">
<svg width="16" height="16" viewBox="0 0 16 16" fill="none"><rect x="1" y="2" width="14" height="12" rx="1" stroke="currentColor" stroke-width="1.5"/><path d="M5 8h6M8 5v6" stroke="currentColor" stroke-width="1.5" stroke-linecap="round"/></svg>
Toggle
</button>
</div>
</div>
</header>
<% snapshots_by_viewport.each_with_index do |(viewport, snapshots), i| -%>
<div class="viewport-group<%= " hidden" unless i == 0 %>" data-viewport="<%= viewport %>">
<% snapshots.each do |snap| %>
<% entry = snap.current || snap.baseline -%>
<div class="snapshot<%= " snapshot--selector" if entry.selector %>" id="<%= viewport %>-<%= snap.name %>" data-name="<%= snap.name %>" data-has-baseline="<%= !!snap.baseline %>" data-has-current="<%= !!snap.current %>">
<div class="snapshot-header">
<h2>
<%= snap.name.tr("-", " ") %>
<% unless snap.baseline %>
<span class="label new">new</span>
<% end -%>
<% unless snap.current %>
<span class="label removed">removed</span>
<% end -%>
</h2>
<code class="path"><%= entry.path %><%= " #{entry.selector}" if entry.selector %></code>
</div>
<%# Side-by-side mode %>
<div class="pair view-side-by-side">
<div class="side">
<h3>Baseline</h3>
<% if snap.baseline %>
<img src="baseline/<%= viewport %>/<%= snap.name %>.png" alt="baseline <%= snap.name %>" loading="lazy">
<% else %>
<div class="placeholder">No baseline</div>
<% end %>
</div>
<div class="side">
<h3>Current</h3>
<% if snap.current %>
<img src="current/<%= viewport %>/<%= snap.name %>.png" alt="current <%= snap.name %>" loading="lazy">
<% else %>
<div class="placeholder">Removed</div>
<% end %>
</div>
</div>
<%# Slider mode %>
<div class="view-slider hidden">
<% if snap.baseline && snap.current %>
<div class="slider-container">
<div class="slider-img slider-baseline">
<img src="baseline/<%= viewport %>/<%= snap.name %>.png" alt="baseline" loading="lazy">
</div>
<div class="slider-img slider-current">
<img src="current/<%= viewport %>/<%= snap.name %>.png" alt="current" loading="lazy">
</div>
<div class="slider-handle" aria-label="Drag to compare">
<div class="slider-line"></div>
<div class="slider-grip">
<svg width="12" height="24" viewBox="0 0 12 24" fill="none"><path d="M4 6v12M8 6v12" stroke="currentColor" stroke-width="1.5" stroke-linecap="round"/></svg>
</div>
</div>
<div class="slider-labels">
<span>Baseline</span>
<span>Current</span>
</div>
</div>
<% else %>
<div class="single-image">
<% img = snap.current || snap.baseline -%>
<img src="<%= snap.current ? "current" : "baseline" %>/<%= viewport %>/<%= snap.name %>.png" alt="<%= snap.name %>" loading="lazy">
<div class="single-label"><%= snap.current ? "New — no baseline" : "Removed — no current" %></div>
</div>
<% end %>
</div>
<%# Toggle mode %>
<div class="view-toggle hidden">
<% if snap.baseline && snap.current %>
<div class="toggle-container" data-showing="current">
<img class="toggle-baseline" src="baseline/<%= viewport %>/<%= snap.name %>.png" alt="baseline" loading="lazy">
<img class="toggle-current" src="current/<%= viewport %>/<%= snap.name %>.png" alt="current" loading="lazy">
<div class="toggle-label">Current</div>
</div>
<% else %>
<div class="single-image">
<% img = snap.current || snap.baseline -%>
<img src="<%= snap.current ? "current" : "baseline" %>/<%= viewport %>/<%= snap.name %>.png" alt="<%= snap.name %>" loading="lazy">
<div class="single-label"><%= snap.current ? "New — no baseline" : "Removed — no current" %></div>
</div>
<% end %>
</div>
</div>
<% end %>
</div>
<% end -%>
</main>
<div class="lightbox" id="lightbox">
<div class="lightbox-chrome">
<div class="lightbox-title"></div>
<button class="lightbox-close" aria-label="Close">×</button>
</div>
<div class="lightbox-body">
<img>
</div>
</div>
<div class="shortcuts-hint" id="shortcuts-hint">
<kbd>j</kbd><kbd>k</kbd> navigate
<kbd>1</kbd><kbd>2</kbd><kbd>3</kbd> mode
<kbd>t</kbd> toggle
<kbd>?</kbd> help
</div>
<script>
// ── State ──
var currentMode = "side-by-side";
var currentViewport = document.querySelector(".tab.active").dataset.viewport;
// ── Viewport tabs ──
document.querySelector(".tab-bar").addEventListener("click", function(e) {
if (!e.target.matches(".tab")) return;
currentViewport = e.target.dataset.viewport;
document.querySelectorAll(".tab").forEach(function(t) { t.classList.toggle("active", t.dataset.viewport === currentViewport); });
document.querySelectorAll(".viewport-group").forEach(function(g) { g.classList.toggle("hidden", g.dataset.viewport !== currentViewport); });
document.querySelectorAll(".sidebar-list").forEach(function(l) { l.classList.toggle("hidden", l.dataset.viewport !== currentViewport); });
});
// ── Comparison modes ──
function setMode(mode) {
currentMode = mode;
document.querySelectorAll(".mode").forEach(function(b) { b.classList.toggle("active", b.dataset.mode === mode); });
document.querySelectorAll(".snapshot").forEach(function(snap) {
snap.querySelector(".view-side-by-side").classList.toggle("hidden", mode !== "side-by-side");
snap.querySelector(".view-slider").classList.toggle("hidden", mode !== "slider");
snap.querySelector(".view-toggle").classList.toggle("hidden", mode !== "toggle");
});
// Initialize sliders when entering slider mode
if (mode === "slider") initSliders();
}
document.querySelector(".mode-bar").addEventListener("click", function(e) {
var btn = e.target.closest(".mode");
if (btn) setMode(btn.dataset.mode);
});
// ── Slider logic ──
function initSliders() {
document.querySelectorAll(".slider-container").forEach(function(container) {
if (container._initialized) return;
container._initialized = true;
var handle = container.querySelector(".slider-handle");
var currentLayer = container.querySelector(".slider-current");
var pct = 50;
function update(x) {
var rect = container.getBoundingClientRect();
pct = Math.max(0, Math.min(100, ((x - rect.left) / rect.width) * 100));
currentLayer.style.clipPath = "inset(0 0 0 " + pct + "%)";
handle.style.left = pct + "%";
}
update(0); // start at 0% — showing full baseline
// Then set to 50%
setTimeout(function() {
var rect = container.getBoundingClientRect();
update(rect.left + rect.width * 0.5);
}, 50);
var dragging = false;
handle.addEventListener("mousedown", function(e) { dragging = true; e.preventDefault(); });
container.addEventListener("mousedown", function(e) {
if (e.target === handle || handle.contains(e.target)) return;
dragging = true;
update(e.clientX);
});
document.addEventListener("mousemove", function(e) { if (dragging) update(e.clientX); });
document.addEventListener("mouseup", function() { dragging = false; });
// Touch support
handle.addEventListener("touchstart", function(e) { dragging = true; e.preventDefault(); }, { passive: false });
container.addEventListener("touchstart", function(e) {
if (e.target === handle || handle.contains(e.target)) return;
dragging = true;
update(e.touches[0].clientX);
});
document.addEventListener("touchmove", function(e) { if (dragging) update(e.touches[0].clientX); });
document.addEventListener("touchend", function() { dragging = false; });
});
}
// ── Toggle logic ──
document.addEventListener("click", function(e) {
var container = e.target.closest(".toggle-container");
if (!container) return;
var showing = container.dataset.showing;
var next = showing === "current" ? "baseline" : "current";
container.dataset.showing = next;
container.querySelector(".toggle-label").textContent = next.charAt(0).toUpperCase() + next.slice(1);
});
// ── Lightbox ──
var lightbox = document.getElementById("lightbox");
function openLightbox(src, title) {
lightbox.querySelector("img").src = src;
lightbox.querySelector(".lightbox-title").textContent = title || "";
lightbox.classList.add("open");
}
function closeLightbox() {
lightbox.classList.remove("open");
}
document.addEventListener("click", function(e) {
if (e.target.closest(".toggle-container")) return; // toggle clicks don't open lightbox
var img = e.target.closest(".snapshot img");
if (img) {
var snap = img.closest(".snapshot");
var name = snap ? snap.dataset.name : "";
var which = img.alt || "";
openLightbox(img.src, name + (which ? " — " + which : ""));
return;
}
if (lightbox.classList.contains("open") && !e.target.closest(".lightbox-body")) {
closeLightbox();
}
});
lightbox.querySelector(".lightbox-close").addEventListener("click", closeLightbox);
// ── Keyboard navigation ──
function visibleSnapshots() {
var group = document.querySelector('.viewport-group:not(.hidden)');
return group ? Array.from(group.querySelectorAll(".snapshot")) : [];
}
function currentIndex() {
var snaps = visibleSnapshots();
var scrollY = window.scrollY + 120;
for (var i = snaps.length - 1; i >= 0; i--) {
if (snaps[i].offsetTop <= scrollY) return i;
}
return 0;
}
function navigateTo(index) {
var snaps = visibleSnapshots();
if (index < 0) index = 0;
if (index >= snaps.length) index = snaps.length - 1;
snaps[index].scrollIntoView({ behavior: "smooth", block: "start" });
highlightSidebarLink(snaps[index].id);
}
function highlightSidebarLink(id) {
document.querySelectorAll(".sidebar-link").forEach(function(a) {
a.classList.toggle("active", a.getAttribute("href") === "#" + id);
});
}
var shortcutsHint = document.getElementById("shortcuts-hint");
document.addEventListener("keydown", function(e) {
if (lightbox.classList.contains("open")) {
if (e.key === "Escape") closeLightbox();
return;
}
switch (e.key) {
case "j": navigateTo(currentIndex() + 1); break;
case "k": navigateTo(currentIndex() - 1); break;
case "1": setMode("side-by-side"); break;
case "2": setMode("slider"); break;
case "3": setMode("toggle"); break;
case "t":
// Toggle visible toggle-containers
document.querySelectorAll('.viewport-group:not(.hidden) .toggle-container').forEach(function(c) {
var next = c.dataset.showing === "current" ? "baseline" : "current";
c.dataset.showing = next;
c.querySelector(".toggle-label").textContent = next.charAt(0).toUpperCase() + next.slice(1);
});
break;
case "?":
shortcutsHint.classList.toggle("expanded");
break;
case "Escape":
shortcutsHint.classList.remove("expanded");
break;
}
});
// ── Sidebar scroll tracking ──
var ticking = false;
window.addEventListener("scroll", function() {
if (!ticking) {
requestAnimationFrame(function() {
var snaps = visibleSnapshots();
var scrollY = window.scrollY + 120;
var activeId = null;
for (var i = snaps.length - 1; i >= 0; i--) {
if (snaps[i].offsetTop <= scrollY) { activeId = snaps[i].id; break; }
}
if (activeId) highlightSidebarLink(activeId);
ticking = false;
});
ticking = true;
}
});
// Sidebar link clicks
document.getElementById("sidebar").addEventListener("click", function(e) {
var link = e.target.closest(".sidebar-link");
if (!link) return;
e.preventDefault();
var target = document.getElementById(link.getAttribute("href").slice(1));
if (target) {
target.scrollIntoView({ behavior: "smooth", block: "start" });
highlightSidebarLink(target.id);
}
});
</script>
</body>
</html>