| 1 |
(function () { |
| 2 |
function init(root) { |
| 3 |
if (!root) return; |
| 4 |
var track = root.querySelector('.bkbg-lc-track'); |
| 5 |
if (!track) return; |
| 6 |
|
| 7 |
var infiniteEnabled = root.getAttribute('data-bkbg-infinite') !== '0'; |
| 8 |
var autoScrollEnabled = root.getAttribute('data-bkbg-autoscroll') === '1'; |
| 9 |
var autoScrollSpeed = parseFloat(root.getAttribute('data-bkbg-autoscroll-speed') || '40'); |
| 10 |
if (!isFinite(autoScrollSpeed) || autoScrollSpeed < 0) autoScrollSpeed = 40; |
| 11 |
var autoScrollPauseOnHover = root.getAttribute('data-bkbg-autoscroll-hover') !== '0'; |
| 12 |
|
| 13 |
var dots = root.querySelectorAll('[data-bkbg-dot]'); |
| 14 |
var progressBar = root.querySelector('.bkbg-lc-progress-bar'); |
| 15 |
var fractionCurrent = root.querySelector('[data-bkbg-fraction="current"]'); |
| 16 |
var fractionTotal = root.querySelector('[data-bkbg-fraction="total"]'); |
| 17 |
|
| 18 |
var prev = root.querySelector('[data-bkbg-nav="prev"]'); |
| 19 |
var next = root.querySelector('[data-bkbg-nav="next"]'); |
| 20 |
|
| 21 |
var baseCount = 0; |
| 22 |
var didClone = false; |
| 23 |
var isNormalizing = false; |
| 24 |
var segmentStart = 0; |
| 25 |
var segmentWidth = 0; |
| 26 |
|
| 27 |
function disableTabbing(el) { |
| 28 |
try { |
| 29 |
var focusables = el.querySelectorAll('a, button, input, textarea, select'); |
| 30 |
for (var i = 0; i < focusables.length; i++) { |
| 31 |
focusables[i].setAttribute('tabindex', '-1'); |
| 32 |
} |
| 33 |
} catch (e) { } |
| 34 |
} |
| 35 |
|
| 36 |
function setupInfinite() { |
| 37 |
if (!infiniteEnabled) return; |
| 38 |
|
| 39 |
var slides = getSlides(); |
| 40 |
baseCount = slides.length; |
| 41 |
if (baseCount < 2) return; |
| 42 |
if (didClone) return; |
| 43 |
|
| 44 |
var originals = Array.prototype.slice.call(slides); |
| 45 |
var before = []; |
| 46 |
var after = []; |
| 47 |
|
| 48 |
for (var i = 0; i < originals.length; i++) { |
| 49 |
var c1 = originals[i].cloneNode(true); |
| 50 |
c1.classList.add('is-clone'); |
| 51 |
c1.setAttribute('aria-hidden', 'true'); |
| 52 |
disableTabbing(c1); |
| 53 |
after.push(c1); |
| 54 |
|
| 55 |
var c2 = originals[i].cloneNode(true); |
| 56 |
c2.classList.add('is-clone'); |
| 57 |
c2.setAttribute('aria-hidden', 'true'); |
| 58 |
disableTabbing(c2); |
| 59 |
before.push(c2); |
| 60 |
} |
| 61 |
|
| 62 |
// Prepend in reverse order so the sequence stays correct. |
| 63 |
for (var j = before.length - 1; j >= 0; j--) { |
| 64 |
track.insertBefore(before[j], track.firstChild); |
| 65 |
} |
| 66 |
for (var k = 0; k < after.length; k++) { |
| 67 |
track.appendChild(after[k]); |
| 68 |
} |
| 69 |
|
| 70 |
didClone = true; |
| 71 |
|
| 72 |
// Jump to the middle copy. |
| 73 |
window.requestAnimationFrame(function () { |
| 74 |
measureInfinite(true); |
| 75 |
syncIndicators(); |
| 76 |
}); |
| 77 |
} |
| 78 |
|
| 79 |
function measureInfinite(recenter) { |
| 80 |
if (!infiniteEnabled || !didClone || !baseCount) return; |
| 81 |
var slides = getSlides(); |
| 82 |
if (!slides || slides.length < baseCount * 3) return; |
| 83 |
|
| 84 |
var middleFirst = slides[baseCount]; |
| 85 |
var afterFirst = slides[baseCount * 2]; |
| 86 |
if (!middleFirst || !afterFirst) return; |
| 87 |
|
| 88 |
var nextStart = middleFirst.offsetLeft; |
| 89 |
var nextWidth = afterFirst.offsetLeft - middleFirst.offsetLeft; |
| 90 |
if (!isFinite(nextStart) || !isFinite(nextWidth) || nextWidth <= 0) return; |
| 91 |
|
| 92 |
if (recenter) { |
| 93 |
// Preserve local offset when dimensions change. |
| 94 |
var local = track.scrollLeft - segmentStart; |
| 95 |
if (segmentWidth > 0) { |
| 96 |
local = local % segmentWidth; |
| 97 |
if (local < 0) local += segmentWidth; |
| 98 |
} else { |
| 99 |
local = 0; |
| 100 |
} |
| 101 |
segmentStart = nextStart; |
| 102 |
segmentWidth = nextWidth; |
| 103 |
track.scrollLeft = segmentStart + local; |
| 104 |
} else { |
| 105 |
segmentStart = nextStart; |
| 106 |
segmentWidth = nextWidth; |
| 107 |
} |
| 108 |
} |
| 109 |
|
| 110 |
function normalizeInfiniteScroll() { |
| 111 |
if (!infiniteEnabled || !didClone) return; |
| 112 |
if (!segmentWidth || !isFinite(segmentWidth)) { |
| 113 |
measureInfinite(false); |
| 114 |
} |
| 115 |
if (!segmentWidth) return; |
| 116 |
|
| 117 |
// Keep scrollLeft inside the middle copy to avoid hitting the max scroll clamp. |
| 118 |
if (track.scrollLeft < (segmentStart - 1) || track.scrollLeft >= (segmentStart + segmentWidth + 1)) { |
| 119 |
var local = track.scrollLeft - segmentStart; |
| 120 |
local = local % segmentWidth; |
| 121 |
if (local < 0) local += segmentWidth; |
| 122 |
isNormalizing = true; |
| 123 |
track.scrollLeft = segmentStart + local; |
| 124 |
isNormalizing = false; |
| 125 |
} |
| 126 |
} |
| 127 |
|
| 128 |
function getSlides() { |
| 129 |
return track.querySelectorAll('.bkbg-lc-slide'); |
| 130 |
} |
| 131 |
|
| 132 |
function getCurrentIndex() { |
| 133 |
var slides = getSlides(); |
| 134 |
if (!slides.length) return 0; |
| 135 |
|
| 136 |
var trackRect = track.getBoundingClientRect(); |
| 137 |
var currentIndex = 0; |
| 138 |
for (var i = 0; i < slides.length; i++) { |
| 139 |
var r = slides[i].getBoundingClientRect(); |
| 140 |
if (r.left >= trackRect.left - 10) { |
| 141 |
currentIndex = i; |
| 142 |
break; |
| 143 |
} |
| 144 |
} |
| 145 |
return currentIndex; |
| 146 |
} |
| 147 |
|
| 148 |
function scrollToIndex(index) { |
| 149 |
var slides = getSlides(); |
| 150 |
if (!slides.length) return; |
| 151 |
var i = Math.max(0, Math.min(slides.length - 1, index)); |
| 152 |
slides[i].scrollIntoView({ behavior: 'smooth', inline: 'start', block: 'nearest' }); |
| 153 |
} |
| 154 |
|
| 155 |
function scrollToBaseIndex(index) { |
| 156 |
if (!infiniteEnabled || !didClone || !baseCount) { |
| 157 |
scrollToIndex(index); |
| 158 |
return; |
| 159 |
} |
| 160 |
|
| 161 |
var slides = getSlides(); |
| 162 |
if (!slides.length) return; |
| 163 |
var idx = index % baseCount; |
| 164 |
if (idx < 0) idx += baseCount; |
| 165 |
var target = baseCount + idx; |
| 166 |
if (target < 0) target = 0; |
| 167 |
if (target > slides.length - 1) target = slides.length - 1; |
| 168 |
slides[target].scrollIntoView({ behavior: 'smooth', inline: 'start', block: 'nearest' }); |
| 169 |
} |
| 170 |
|
| 171 |
function scrollByOne(dir) { |
| 172 |
var slides = getSlides(); |
| 173 |
if (!slides.length) return; |
| 174 |
var currentIndex = getCurrentIndex(); |
| 175 |
scrollToIndex(currentIndex + dir); |
| 176 |
} |
| 177 |
|
| 178 |
function syncIndicators() { |
| 179 |
var slides = getSlides(); |
| 180 |
if (!slides.length) return; |
| 181 |
|
| 182 |
var idx = getCurrentIndex(); |
| 183 |
var total = slides.length; |
| 184 |
if (infiniteEnabled && didClone && baseCount) { |
| 185 |
total = baseCount; |
| 186 |
idx = idx % baseCount; |
| 187 |
if (idx < 0) idx += baseCount; |
| 188 |
} |
| 189 |
|
| 190 |
if (dots && dots.length) { |
| 191 |
for (var i = 0; i < dots.length; i++) { |
| 192 |
if (i === idx) dots[i].classList.add('is-active'); |
| 193 |
else dots[i].classList.remove('is-active'); |
| 194 |
} |
| 195 |
} |
| 196 |
|
| 197 |
if (progressBar) { |
| 198 |
var pct = 0; |
| 199 |
if (infiniteEnabled && didClone) { |
| 200 |
if (!segmentWidth) measureInfinite(false); |
| 201 |
var local = track.scrollLeft - segmentStart; |
| 202 |
if (segmentWidth > 0) { |
| 203 |
local = local % segmentWidth; |
| 204 |
if (local < 0) local += segmentWidth; |
| 205 |
} |
| 206 |
var maxLocal = segmentWidth - track.clientWidth; |
| 207 |
pct = maxLocal > 0 ? (local / maxLocal) * 100 : 0; |
| 208 |
} else { |
| 209 |
var max = track.scrollWidth - track.clientWidth; |
| 210 |
pct = max > 0 ? (track.scrollLeft / max) * 100 : 0; |
| 211 |
} |
| 212 |
if (pct < 0) pct = 0; |
| 213 |
if (pct > 100) pct = 100; |
| 214 |
progressBar.style.width = pct + '%'; |
| 215 |
} |
| 216 |
|
| 217 |
if (fractionCurrent) fractionCurrent.textContent = String(idx + 1); |
| 218 |
if (fractionTotal) fractionTotal.textContent = String(total); |
| 219 |
} |
| 220 |
|
| 221 |
if (prev) prev.addEventListener('click', function (e) { e.preventDefault(); scrollByOne(-1); }); |
| 222 |
if (next) next.addEventListener('click', function (e) { e.preventDefault(); scrollByOne(1); }); |
| 223 |
|
| 224 |
if (dots && dots.length) { |
| 225 |
for (var i = 0; i < dots.length; i++) { |
| 226 |
(function (btn) { |
| 227 |
btn.addEventListener('click', function (e) { |
| 228 |
e.preventDefault(); |
| 229 |
var idx = parseInt(btn.getAttribute('data-bkbg-dot') || '0', 10); |
| 230 |
scrollToBaseIndex(idx); |
| 231 |
}); |
| 232 |
})(dots[i]); |
| 233 |
} |
| 234 |
} |
| 235 |
|
| 236 |
// Autoplay (optional) |
| 237 |
var autoplay = root.getAttribute('data-bkbg-autoplay') === '1'; |
| 238 |
var delay = parseInt(root.getAttribute('data-bkbg-autoplay-delay') || '3000', 10); |
| 239 |
var pauseOnHover = root.getAttribute('data-bkbg-autoplay-hover') !== '0'; |
| 240 |
var timer = null; |
| 241 |
var paused = false; |
| 242 |
|
| 243 |
function start() { |
| 244 |
if (!autoplay) return; |
| 245 |
if (timer) return; |
| 246 |
if (!delay || delay < 800) delay = 800; |
| 247 |
timer = window.setInterval(function () { |
| 248 |
if (paused) return; |
| 249 |
var slides = getSlides(); |
| 250 |
if (!slides.length) return; |
| 251 |
var idx = getCurrentIndex(); |
| 252 |
var nextIdx = idx + 1; |
| 253 |
if (nextIdx >= slides.length) nextIdx = 0; |
| 254 |
scrollToIndex(nextIdx); |
| 255 |
}, delay); |
| 256 |
} |
| 257 |
|
| 258 |
function stop() { |
| 259 |
if (timer) { |
| 260 |
window.clearInterval(timer); |
| 261 |
timer = null; |
| 262 |
} |
| 263 |
} |
| 264 |
|
| 265 |
if (autoplay) { |
| 266 |
start(); |
| 267 |
if (pauseOnHover) { |
| 268 |
root.addEventListener('mouseenter', function () { paused = true; }); |
| 269 |
root.addEventListener('mouseleave', function () { paused = false; }); |
| 270 |
} |
| 271 |
document.addEventListener('visibilitychange', function () { |
| 272 |
if (document.hidden) stop(); |
| 273 |
else start(); |
| 274 |
}); |
| 275 |
} |
| 276 |
|
| 277 |
// Auto-scroll (continuous, optional). Takes precedence over autoplay. |
| 278 |
var rafId = null; |
| 279 |
var lastTs = 0; |
| 280 |
var autoPaused = false; |
| 281 |
var originalSnap = track.style.scrollSnapType; |
| 282 |
|
| 283 |
function tick(ts) { |
| 284 |
if (!autoScrollEnabled) return; |
| 285 |
if (!lastTs) lastTs = ts; |
| 286 |
var dt = ts - lastTs; |
| 287 |
lastTs = ts; |
| 288 |
|
| 289 |
if (!document.hidden && !autoPaused) { |
| 290 |
var d = (autoScrollSpeed * dt) / 1000; |
| 291 |
track.scrollLeft += d; |
| 292 |
normalizeInfiniteScroll(); |
| 293 |
syncIndicators(); |
| 294 |
} |
| 295 |
|
| 296 |
rafId = window.requestAnimationFrame(tick); |
| 297 |
} |
| 298 |
|
| 299 |
function startAutoScroll() { |
| 300 |
if (!autoScrollEnabled) return; |
| 301 |
if (rafId) return; |
| 302 |
|
| 303 |
// Disable snap so the motion stays smooth. |
| 304 |
track.style.scrollSnapType = 'none'; |
| 305 |
lastTs = 0; |
| 306 |
rafId = window.requestAnimationFrame(tick); |
| 307 |
} |
| 308 |
|
| 309 |
function stopAutoScroll() { |
| 310 |
if (rafId) { |
| 311 |
window.cancelAnimationFrame(rafId); |
| 312 |
rafId = null; |
| 313 |
} |
| 314 |
track.style.scrollSnapType = originalSnap; |
| 315 |
lastTs = 0; |
| 316 |
} |
| 317 |
|
| 318 |
if (autoScrollEnabled) { |
| 319 |
// Disable step autoplay if continuous auto-scroll is on. |
| 320 |
autoplay = false; |
| 321 |
stop(); |
| 322 |
startAutoScroll(); |
| 323 |
|
| 324 |
if (autoScrollPauseOnHover) { |
| 325 |
root.addEventListener('mouseenter', function () { autoPaused = true; }); |
| 326 |
root.addEventListener('mouseleave', function () { autoPaused = false; }); |
| 327 |
} |
| 328 |
document.addEventListener('visibilitychange', function () { |
| 329 |
if (document.hidden) stopAutoScroll(); |
| 330 |
else startAutoScroll(); |
| 331 |
}); |
| 332 |
} |
| 333 |
|
| 334 |
setupInfinite(); |
| 335 |
|
| 336 |
// Re-measure after images load / layout changes to avoid a visible jump. |
| 337 |
try { |
| 338 |
var imgs = track.querySelectorAll('img'); |
| 339 |
for (var ii = 0; ii < imgs.length; ii++) { |
| 340 |
(function (img) { |
| 341 |
if (!img) return; |
| 342 |
if (img.complete) return; |
| 343 |
img.addEventListener('load', function () { |
| 344 |
window.requestAnimationFrame(function () { |
| 345 |
measureInfinite(true); |
| 346 |
syncIndicators(); |
| 347 |
}); |
| 348 |
}, { passive: true }); |
| 349 |
})(imgs[ii]); |
| 350 |
} |
| 351 |
} catch (e) { } |
| 352 |
|
| 353 |
window.addEventListener('resize', function () { |
| 354 |
window.requestAnimationFrame(function () { |
| 355 |
measureInfinite(true); |
| 356 |
syncIndicators(); |
| 357 |
}); |
| 358 |
}, { passive: true }); |
| 359 |
|
| 360 |
syncIndicators(); |
| 361 |
track.addEventListener('scroll', function () { |
| 362 |
normalizeInfiniteScroll(); |
| 363 |
if (isNormalizing) return; |
| 364 |
syncIndicators(); |
| 365 |
}, { passive: true }); |
| 366 |
} |
| 367 |
|
| 368 |
function boot() { |
| 369 |
var blocks = document.querySelectorAll('.wp-block-blockenberg-logo-carousel'); |
| 370 |
for (var i = 0; i < blocks.length; i++) init(blocks[i]); |
| 371 |
} |
| 372 |
|
| 373 |
if (document.readyState === 'loading') { |
| 374 |
document.addEventListener('DOMContentLoaded', boot); |
| 375 |
} else { |
| 376 |
boot(); |
| 377 |
} |
| 378 |
})(); |
| 379 |
|
