Центрируйте вертикально и горизонтально несколько чисел на нескольких сложных путях в SVG - PullRequest
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Центрируйте вертикально и горизонтально несколько чисел на нескольких сложных путях в SVG

2 голосов
/ 04 марта 2020

Я хотел бы центрировать по вертикали и горизонтали несколько чисел на каждом пути в этом SVG.

На данный момент, я мог бы достичь этого, например, установив произвольные значения X и Y. : 

<path id="path-44" d="xxxxxxxxxxxx"/>
<text class="numero-dep" text-anchor="middle" xlink:href="#path-44" x="142" y="242">44</text>

Это работает, но я должен вручную сделать это для более чем ста путей (на примере SVG я удалил почти все paths, чтобы упростить вопрос. Но это карта Франции и у меня более 100 paths

Есть ли способ автоматически центрировать по горизонтали и вертикали какой-либо текст по некоторому пути?

На данный момент я попытался центрировать текст с css методами (свойство transform, flexbox, grid), но это не работает.

Я также пытался использовать textPath, но я не могу сосредоточиться на этом элементе. Что мне показалось интересным textPath, он имеет атрибут href со ссылкой на элемент. Так что со ссылкой, я надеялся центрировать текст, но это кажется невозможным. 

.map__image path {
  fill: red;
  stroke: #fff;
  stoke-width: 1px;
  transition: color 0.3s;
}
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1 Ответ

2 голосов
/ 04 марта 2020

Как я уже говорил, вы можете центрировать текст внутри ограничительной рамки на пути. Вы можете получить положение и размер ограничительной рамки, используя метод getBBox(). Однако в зависимости от пути центр ограничительной рамки может выходить за пределы пути - как в случае FR-42

Вот как я бы это сделал: 

const SVG_NS = "http://www.w3.org/2000/svg";
const theSvg = document.querySelector("svg")

let a_paths = document.querySelectorAll("a path");

a_paths.forEach(p =>{
  //get the bounding box of the path
  let bb = p.getBBox()
  //Get the text content
  let text_content = p.parentNode.id.split("-")[1];
  // create a new element text and set the x and y attributes and the text content
  let txt = document.createElementNS(SVG_NS, 'text');
  txt.setAttributeNS(null,"x",bb.x + bb.width/2);
  txt.setAttributeNS(null,"y",bb.y + bb.height/2);
  txt.textContent = text_content;
  // append the text to the svg element
  theSvg.appendChild(txt)
  })
.map__image path {
  fill: red;
  stroke: #fff;
  stoke-width: 1px;
  transition: color 0.3s;
}

text{text-anchor:middle;}
<div class="map__image">

  <svg xmlns="http://www.w3.org/2000/svg" xmlns:amcharts="http://amcharts.com/ammap"
    xmlns:xlink="http://www.w3.org/1999/xlink" version="1.1" viewBox="0 0 612 585">
    <g>

      <a xlink:href="" xlink:title="Loire" id="FR-42">
        <path class="land"
          d="M377,302.07L377.43,303.83L376.64,305.75L380.06,306.45L380.92,308.27L380.92,308.27L381.96,308.27L381.96,308.27L385.46,306.68L386.71,307.97L388.59,308.17L389.81,306.94L390.56,307.94L391.75,307.35L391.56,309.09L392.62,309.22L394.79,307.5L396.59,307.53L396.22,306.65L397.29,305.4L397.29,305.4L398.64,305.97L397.65,307.28L399.29,308.96L398.47,310.44L396.99,309.64L394.58,310.79L393.8,314.38L391.56,315.62L394.19,318.23L393.64,319.23L391.34,318.88L395.53,322.74L394.58,324.3L395.42,325.82L397.65,326.92L396.88,331.41L395.67,332.23L396.21,333.33L397.9,333.74L396.37,338.1L399.52,340.88L400.71,343.12L406.74,343.73L407.85,345.62L409.43,344.58L408.22,346.31L408.32,348.92L410.13,349.54L411.21,348.51L412.65,350.82L412.65,350.82L412.6,356.09L412.6,356.09L406.75,359.27L407.07,360.47L405.74,361.51L406.17,362.87L401.23,363.73L401.23,363.73L399.29,361.45L397.38,362.43L397.38,362.43L396.88,362.24L396.88,362.24L395.7,361.45L396.6,359.87L394.97,358.91L396.45,357.78L395.58,356.28L394.01,355.73L392.51,356.54L390.89,354.71L387.81,354.71L387.6,356.14L384.59,356.53L384.17,357.85L383.12,356.68L382.07,357.06L381.97,358.32L380.23,355.51L378.56,355.74L377.4,358.01L376.96,356.59L376.96,356.59L376.72,354.1L379.7,351.96L380.59,348.43L379.6,347.8L378.47,343.57L373.9,340.41L371.96,336.87L372.11,334.88L370.11,333.38L370.06,331.94L368.3,330.96L369.69,329.63L369.4,326.27L371.02,325.33L368.46,322.71L368.46,322.71L369.08,320.13L370.52,320.6L371.04,319.57L372.37,320.14L374.17,318.6L373.1,315.37L373.77,313.27L372.59,311.88L372.44,309.25L373.24,308.83L371.55,304.27L373.05,304.18L373,303.13L375.67,302.88L376.11,302.07L376.11,302.07z" />
      </a>
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      </a>
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</div>

В примере я добавил текст к элементу svg, но вы можете создать другую группу для текста или добавить ее к <a> родитель.

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