Swiper.js auto-width doesn't work when using CSS Columns - javascript

CSS columns
CSS columns automatically creates the correct number of columns to fit the text (relative to the column-width, column-gap, and element height). Setting thinner columns mean more total columns; setting shorter columns mean more total columns, etc.
See the snippet below, with Swiper.js commented out, for the correct CSS column behavior.
CSS column behavior with Swiper
When a Swiper.js slide contains CSS columns, it doesn't match the slide width to the total number of columns: it begins the second slide after 100% of the swiper-container element width, creating a nasty overlap.
I've tried swiper-slide to width: auto with the slidesPerView: auto option, as described here. Have I missed something else? Or have I hit a limitation of Swiper.js? All tests use the current 5.3.7 version of Swiper.js.
The snippet has Swiper.js commented out to show the correct CSS column behavior; un-comment the HTML & JS to show the problematic Swiper.js result.
// var mySwiper = new Swiper('.swiper-container', {
// direction: 'horizontal',
// slidesPerView: 'auto',
// roundLengths: true,
// mousewheel: {
// enabled: true,
// },
// })
.col-wrapper {
column-fill: auto;
column-width: 150px;
column-gap: 2rem;
height: 100px;
}
.swiper-slide {
width: auto;
}
<!--
<link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/swiper#5.3.7/css/swiper.min.css">
<script src="https://cdn.jsdelivr.net/npm/swiper#5.3.7/js/swiper.min.js"></script>
-->
<body>
<div class="swiper-container">
<div class="swiper-wrapper">
<div class="swiper-slide">
<div class="col-wrapper">
<p class="p-test">1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84
85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148
149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208
209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268
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329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388
389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448
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569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628
629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688
689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748
749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808
809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868
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989 990 991 992 993 994 995 996 997 998 999 1000</p>
</div>
</div>
<div class="swiper-slide">
<div class="col-wrapper">
<p class="p-test">The beginning of slide 2. Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo
consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.</p>
</div>
</div>
</div>
</div>
</body>

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<defs>
<radialGradient id="_GradLFF02X02X02XF002X02X02X0NA_" gradientUnits="objectBoundingBox" fx="0.50" fy="0.50">
<stop offset="0.000" stop-color="rgb(240,240,240)" stop-opacity="1.0"></stop>
<stop offset="1.000" stop-color="rgb(255,206,160)" stop-opacity="1.0"></stop>
</radialGradient>
</defs>
</svg>

You need to calculate the centerX/Y (pivot) point via getBBox().
.offset() will return the rendered width.
Working example
var svg = document.querySelector('svg');
var guagec = $("#centreGuage");
var needle = document.querySelector("#needle");
var gaugeValue = document.getElementById("GaugeValue");
var bb = guagec[0].getBBox();
var [x, y, width, height] = [bb.x, bb.y, bb.width, bb.height];
var [centerX, centerY] = [x + width / 2, y + height / 2];
//set initial position
needle.setAttribute('style', `transform: translate(${centerX}px, ${centerY}px) rotate(0deg) translate(-${centerX}px, -${centerY}px)`);
var timers = [];
var interval = setInterval(function () {
var max = 100;
var min = 0;
var value = Math.random() * (max - min) + min;
var maxAngle = 320;
var minAngle = 10;
var total = max - min;
var angleval = maxAngle / 100;
var angle = (((value - min) * 100) / total) * angleval;
gaugeValue.textContent = +value.toFixed(2);
needle.setAttribute('style', `transform: translate(${centerX}px, ${centerY}px) rotate(${angle}deg) translate(-${centerX}px, -${centerY}px)`);
}, 1000);
svg{
width:50%;
}
#needle{transition: 0.5s}
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/2.2.4/jquery.min.js"></script>
<svg viewBox="66 210 197 197">
<g class="gauge" id="xcustom3" fill="url(#GradLFF02X02X02XF002X02X02X0NA)" stroke="rgb(0,0,0)"
stroke-width="1" stroke-miterlimit="10">
<rect id="centreGuage" x="66" y="210" rx="20" ry="20" width="197" height="197" stroke="rgb(240,240,240)" fill="rgb(240,240,240)" />
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points="220 319 220 318 220 317 220 316 220 316 220 315 221 314 221 313 221 313 221 312 221 311 221 310 221 309 221 309 221 308 221 307 209 307 209 308 209 308 209 309 209 310 209 310 209 311 209 312 209 312 209 313 209 314 208 314 208 315 208 315 208 316 208 317 220 319"
stroke="rgb(72,72,72)" fill="rgb(72,72,72)" />
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points="216 331 216 330 217 329 217 328 217 327 218 327 218 326 218 325 218 324 219 324 219 323 219 322 219 321 219 320 220 320 220 319 208 317 208 317 208 318 208 319 207 319 207 320 207 320 207 321 207 322 206 322 206 323 206 323 206 324 206 324 205 325 205 326 216 331"
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stroke="rgb(36,36,36)" fill="rgb(36,36,36)" />
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<g class="textgroup" fill="rgb(71,71,71)" stroke="none" font-family="Arial" font-size="14.00pt"
font-weight="bold" text-anchor="start">
<text x="124" y="391">0</text>
<text x="88" y="362">10</text>
<text x="71" y="319">20</text>
<text x="80" y="275">30</text>
<text x="110" y="241">40</text>
<text x="154" y="229">50</text>
<text x="198" y="240">60</text>
<text x="230" y="273">70</text>
<text x="240" y="319">80</text>
<text x="222" y="364">90</text>
<text x="183" y="392">100</text>
</g>
<g fill="rgb(21,21,21)" stroke="none" font-family="Arial" font-size="20.00pt" font-weight="bold"
text-anchor="middle">
<rect x="130" y="359" width="70" height="24" stroke="rgb(255,232,167)" stroke-width="1"
fill="rgb(255,232,167)"></rect>
<text id="GaugeValue" x="165" y="379">6.29</text>
</g>
<g id="needle">
<polygon points="145 355 161 324 152 322 145 355" stroke="rgb(105,105,105)" stroke-width="1"
fill="rgb(160,160,160)" />
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fill="rgb(160,160,160)" />
</g>
<g fill="rgb(0,0,196)" stroke="none" font-family="Tahoma" font-size="9.00pt" text-anchor="middle">
<text id="text_280530371" x="164" y="311">Knob</text>
</g>
</g>
</svg>
I don't think the Math.random() value generation is correct. Try this:
var value = Math.random() * (max - min) + min;

Show Percentage in SVG Graphic

I am trying to show current vaccination-data from a CSV-File provided by local authorities as a progress-bar in style of a syringe.
Depending on the percentage of vaccinated people, the bar should show a part of the syringe-icon in a different color.
I already found this awesome project: https://jsfiddle.net/kimmobrunfeldt/dnLLgm5o/
But when trying to add the following code as icon, nothing happens.
<svg aria-hidden="true" focusable="false" data-prefix="fal" data-icon="syringe" role="img" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 512 512" class="svg-inline--fa fa-syringe fa-w-16"><path fill="currentColor" d="M509.7 81.5L430.5 2.3c-3.1-3.1-8.2-3.1-11.3 0l-11.3 11.3c-3.1 3.1-3.1 8.2 0 11.3l28.3 28.3-45.3 45.3-56.6-56.6-17-17c-3.1-3.1-8.2-3.1-11.3 0l-11.3 11.3c-3.1 3.1-3.1 8.2 0 11.3l17 17L84.5 291.7c-17.3 17.3-25.6 41.1-23 65.4l7.1 63.6L2.3 487c-3.1 3.1-3.1 8.2 0 11.3l11.3 11.3c3.1 3.1 8.2 3.1 11.3 0l66.3-66.3 63.6 7.1c23.9 2.6 47.9-5.4 65.4-23l227.2-227.2 17 17c3.1 3.1 8.2 3.1 11.3 0L487 206c3.1-3.1 3.1-8.2 0-11.3l-73.5-73.5 45.3-45.3 28.3 28.3c3.1 3.1 8.2 3.1 11.3 0l11.3-11.3c3.1-3.2 3.1-8.2 0-11.4zm-84.9 96.2L197.7 404.9c-10.4 10.4-24.6 15.4-39.2 13.8l-58.5-6.5-6.5-58.5c-1.6-14.6 3.4-28.9 13.8-39.2l23.5-23.5 39.6 39.6c3.1 3.1 8.2 3.1 11.3 0l11.3-11.3c3.1-3.1 3.1-8.2 0-11.3l-39.6-39.6 45.3-45.3 39.6 39.6c3.1 3.1 8.2 3.1 11.3 0l11.3-11.3c3.1-3.1 3.1-8.2 0-11.3l-39.6-39.6 45.3-45.3 39.6 39.6c3.1 3.1 8.2 3.1 11.3 0l11.3-11.3c3.1-3.1 3.1-8.2 0-11.3L289 132.4l45.3-45.3 90.5 90.6z" class=""></path></svg>
What am i doing wrong?

Easier done with a green path-stroke and pathLength=100
A stroke-dasharray="78 100" then sets percentage
svg {
width: 150px;
}
<script>
function updatePercentage(v = 50) {
document.querySelector("#ceringe").setAttribute("stroke-dasharray", v + " 100");
}
</script>
<input type="range" min="0" max="100" oninput="updatePercentage(this.value)">
<br>
<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 512 512">
<path id="ceringe" stroke-dasharray="50 100" pathLength="100" d="M108 403L380 132"
stroke="green" stroke-width="130" />
<path fill="black" d="M510 82 431 2C428-1 423-1 420 2L409 13C406 16 406 21 409 24L437
52 392 97 335 40 318 23C315 20 310 20 307 23L296 34C293 37 293 42 296 45L313 62 85 292
C68 309 59 333 62 357L69 421 2 487C-1 490-1 495 2 498L13 509C16 512 21 512 24 509
L90 443 154 450C178 453 202 445 219 427L446 200 463 217C466 220 471 220 474 217L487 206
C490 203 490 198 487 195L413 121 458 76 486 104C489 107 494 107 497 104L508 93
C511 90 511 85 508 82ZM425 178 198 405C188 415 173 420 159 419L107 402 93 353
C91 338 96 324 107 314L131 290 171 330C174 333 179 333 182 330L193 319C196 316 196
311 193 308L153 268 198 223 238 263C241 266 246 266 249 263L260 252C263 249 263 244
260 241L220 201 265 156 305 196C308 199 313 199 316 196L327 185C330 182 330 177 327
174L289 132 334 87 425 178Z"/>
</svg>

I would recommend adding a clipping mask and then altering the width of the clipping mask with JS based on the values in the CSV file.
This example shows have the icon in green and the full icon in black. If you change 0.5512 to 0.1512, it would be 10% full, etc.
let clipping = document.getElementById("clipping-rectangle")
clipping.width.baseVal.value = 0.5 * 512;
#container {
margin: 20px;
width: 200px;
height: 200px;
}
<div id="container">
<svg aria-hidden="true" focusable="false" data-prefix="fal" data-icon="syringe" role="img" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 512 512" class="svg-inline--fa fa-syringe fa-w-16">
<defs>
<clipPath id="clipping">
<rect x="0" y="0" width="800" height="512" id="clipping-rectangle"/>
</clipPath>
</defs>
<path fill="black" d="M509.7 81.5L430.5 2.3c-3.1-3.1-8.2-3.1-11.3 0l-11.3 11.3c-3.1 3.1-3.1 8.2 0 11.3l28.3 28.3-45.3 45.3-56.6-56.6-17-17c-3.1-3.1-8.2-3.1-11.3 0l-11.3 11.3c-3.1 3.1-3.1 8.2 0 11.3l17 17L84.5 291.7c-17.3 17.3-25.6 41.1-23 65.4l7.1 63.6L2.3 487c-3.1 3.1-3.1 8.2 0 11.3l11.3 11.3c3.1 3.1 8.2 3.1 11.3 0l66.3-66.3 63.6 7.1c23.9 2.6 47.9-5.4 65.4-23l227.2-227.2 17 17c3.1 3.1 8.2 3.1 11.3 0L487 206c3.1-3.1 3.1-8.2 0-11.3l-73.5-73.5 45.3-45.3 28.3 28.3c3.1 3.1 8.2 3.1 11.3 0l11.3-11.3c3.1-3.2 3.1-8.2 0-11.4zm-84.9 96.2L197.7 404.9c-10.4 10.4-24.6 15.4-39.2 13.8l-58.5-6.5-6.5-58.5c-1.6-14.6 3.4-28.9 13.8-39.2l23.5-23.5 39.6 39.6c3.1 3.1 8.2 3.1 11.3 0l11.3-11.3c3.1-3.1 3.1-8.2 0-11.3l-39.6-39.6 45.3-45.3 39.6 39.6c3.1 3.1 8.2 3.1 11.3 0l11.3-11.3c3.1-3.1 3.1-8.2 0-11.3l-39.6-39.6 45.3-45.3 39.6 39.6c3.1 3.1 8.2 3.1 11.3 0l11.3-11.3c3.1-3.1 3.1-8.2 0-11.3L289 132.4l45.3-45.3 90.5 90.6z" id="vaccine-path"/>
<path fill="green" d="M509.7 81.5L430.5 2.3c-3.1-3.1-8.2-3.1-11.3 0l-11.3 11.3c-3.1 3.1-3.1 8.2 0 11.3l28.3 28.3-45.3 45.3-56.6-56.6-17-17c-3.1-3.1-8.2-3.1-11.3 0l-11.3 11.3c-3.1 3.1-3.1 8.2 0 11.3l17 17L84.5 291.7c-17.3 17.3-25.6 41.1-23 65.4l7.1 63.6L2.3 487c-3.1 3.1-3.1 8.2 0 11.3l11.3 11.3c3.1 3.1 8.2 3.1 11.3 0l66.3-66.3 63.6 7.1c23.9 2.6 47.9-5.4 65.4-23l227.2-227.2 17 17c3.1 3.1 8.2 3.1 11.3 0L487 206c3.1-3.1 3.1-8.2 0-11.3l-73.5-73.5 45.3-45.3 28.3 28.3c3.1 3.1 8.2 3.1 11.3 0l11.3-11.3c3.1-3.2 3.1-8.2 0-11.4zm-84.9 96.2L197.7 404.9c-10.4 10.4-24.6 15.4-39.2 13.8l-58.5-6.5-6.5-58.5c-1.6-14.6 3.4-28.9 13.8-39.2l23.5-23.5 39.6 39.6c3.1 3.1 8.2 3.1 11.3 0l11.3-11.3c3.1-3.1 3.1-8.2 0-11.3l-39.6-39.6 45.3-45.3 39.6 39.6c3.1 3.1 8.2 3.1 11.3 0l11.3-11.3c3.1-3.1 3.1-8.2 0-11.3l-39.6-39.6 45.3-45.3 39.6 39.6c3.1 3.1 8.2 3.1 11.3 0l11.3-11.3c3.1-3.1 3.1-8.2 0-11.3L289 132.4l45.3-45.3 90.5 90.6z" id="vaccine-path-green" clip-path="url(#clipping)"/></svg>
</div>

Divide image into segments to change them with css on hover

I have an image like this, divided into 4 segments. I want to be able to change the blur of each segment on hover. For example:
#segment1:hover {
filter: blur(50px);
}
I tried turning those segments into svg masks and then using clip path like in this example this example, but css still interprets it like a whole image even though only a part of it is visible.
The shape of the curves dividing those segments is complex and (I suppose) svg should be used, so javascript tricks for checking x and y position don't work, as well as html < map > tag.
How would you solve such problem? Thank you!
Here's the svg code for the first segment mask (just in case).
<svg version="1.0" xmlns="http://www.w3.org/2000/svg"
width="1920.000000pt" height="1081.000000pt" viewBox="0 0 1920.000000 1081.000000"
preserveAspectRatio="xMidYMid meet">
<path transform="translate(0.000000,1081.000000) scale(0.100000,-0.100000)"
fill="#000000" stroke="none" d="M0 6557 l0 -4254 118 -12 c64 -7 137 -18 162 -23 73 -17 432 -19 530
-3 47 8 124 18 171 24 109 12 305 56 389 86 36 13 88 32 115 41 178 62 184 64
500 247 204 118 404 270 593 451 204 195 424 506 538 758 20 45 46 97 56 113
10 17 18 38 18 48 0 10 12 41 26 69 15 29 35 83 46 121 10 38 27 86 38 107 10
20 24 59 31 86 7 27 24 76 39 109 30 65 68 168 96 255 53 169 121 283 298 499
158 193 340 327 536 393 l95 33 220 -1 220 0 136 -36 c75 -20 179 -55 231 -77
52 -22 153 -57 224 -76 71 -20 143 -40 159 -46 68 -24 166 -48 241 -58 43 -5
121 -16 171 -23 115 -15 205 -4 378 47 180 53 220 70 314 135 312 214 446 443
523 890 15 89 4 313 -28 595 -34 301 -43 630 -21 771 15 89 90 341 131 436 18
41 95 177 159 278 64 100 141 195 251 308 233 239 386 339 746 487 307 126
430 214 538 382 41 63 51 115 52 247 0 84 -6 132 -26 215 -15 58 -27 116 -29
128 -6 61 -160 292 -289 435 l-61 68 -4317 0 -4318 0 0 -4253z"/>
</svg>

Something like this, perhaps:
.x { opacity:0; }
.x:hover { opacity:1; }
<svg width="400" height="300" viewBox="0 0 800 600">
<defs>
<filter id="blur">
<feGaussianBlur stdDeviation="8"/>
</filter>
<image href="https://i.stack.imgur.com/DkIzu.jpg"
width="800" height="600" id="img"/>
<clipPath id="c1">
<path d="M0 0h400v300h-400z"/>
</clipPath>
<clipPath id="c2">
<path d="M400 0h400v300h-400z"/>
</clipPath>
<clipPath id="c3">
<path d="M0 300h400v300h-400z"/>
</clipPath>
<clipPath id="c4">
<path d="M400 300h400v300h-400z"/>
</clipPath>
</defs>
<use xlink:href="#img"/>
<use xlink:href="#img" filter="url(#blur)"
clip-path="url(#c1)" class="x"/>
<use xlink:href="#img" filter="url(#blur)"
clip-path="url(#c2)" class="x"/>
<use xlink:href="#img" filter="url(#blur)"
clip-path="url(#c3)" class="x"/>
<use xlink:href="#img" filter="url(#blur)"
clip-path="url(#c4)" class="x"/>
</svg>
This is just a simple example with rectangular clipping masks, but should work with masks of any shape.

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