svgedit/dist/extensions/ext-eyedropper.js

var svgEditorExtension_eyedropper = (function () {
  'use strict';

  /**
   * @file ext-eyedropper.js
   *
   * @license MIT
   *
   * @copyright 2010 Jeff Schiller
   *
   */
  var extEyedropper = {
    name: 'eyedropper',

    async init(S) {
      const strings = await S.importLocale();
      const svgEditor = this;

      const {
        $,
        ChangeElementCommand
      } = S,
            // , svgcontent,
      // svgdoc = S.svgroot.parentNode.ownerDocument,
      svgCanvas = svgEditor.canvas,
            addToHistory = function (cmd) {
        svgCanvas.undoMgr.addCommandToHistory(cmd);
      },
            currentStyle = {
        fillPaint: 'red',
        fillOpacity: 1.0,
        strokePaint: 'black',
        strokeOpacity: 1.0,
        strokeWidth: 5,
        strokeDashArray: null,
        opacity: 1.0,
        strokeLinecap: 'butt',
        strokeLinejoin: 'miter'
      };
      /**
       *
       * @param {module:svgcanvas.SvgCanvas#event:ext_selectedChanged|module:svgcanvas.SvgCanvas#event:ext_elementChanged} opts
       * @returns {void}
       */


      function getStyle(opts) {
        // if we are in eyedropper mode, we don't want to disable the eye-dropper tool
        const mode = svgCanvas.getMode();

        if (mode === 'eyedropper') {
          return;
        }

        const tool = $('#tool_eyedropper'); // enable-eye-dropper if one element is selected

        let elem = null;

        if (!opts.multiselected && opts.elems[0] && !['svg', 'g', 'use'].includes(opts.elems[0].nodeName)) {
          elem = opts.elems[0];
          tool.removeClass('disabled'); // grab the current style

          currentStyle.fillPaint = elem.getAttribute('fill') || 'black';
          currentStyle.fillOpacity = elem.getAttribute('fill-opacity') || 1.0;
          currentStyle.strokePaint = elem.getAttribute('stroke');
          currentStyle.strokeOpacity = elem.getAttribute('stroke-opacity') || 1.0;
          currentStyle.strokeWidth = elem.getAttribute('stroke-width');
          currentStyle.strokeDashArray = elem.getAttribute('stroke-dasharray');
          currentStyle.strokeLinecap = elem.getAttribute('stroke-linecap');
          currentStyle.strokeLinejoin = elem.getAttribute('stroke-linejoin');
          currentStyle.opacity = elem.getAttribute('opacity') || 1.0; // disable eye-dropper tool
        } else {
          tool.addClass('disabled');
        }
      }

      const buttons = [{
        id: 'tool_eyedropper',
        icon: svgEditor.curConfig.extIconsPath + 'eyedropper.png',
        type: 'mode',
        events: {
          click() {
            svgCanvas.setMode('eyedropper');
          }

        }
      }];
      return {
        name: strings.name,
        svgicons: svgEditor.curConfig.extIconsPath + 'eyedropper-icon.xml',
        buttons: strings.buttons.map((button, i) => {
          return Object.assign(buttons[i], button);
        }),
        // if we have selected an element, grab its paint and enable the eye dropper button
        selectedChanged: getStyle,
        elementChanged: getStyle,

        mouseDown(opts) {
          const mode = svgCanvas.getMode();

          if (mode === 'eyedropper') {
            const e = opts.event;
            const {
              target
            } = e;

            if (!['svg', 'g', 'use'].includes(target.nodeName)) {
              const changes = {};

              const change = function (elem, attrname, newvalue) {
                changes[attrname] = elem.getAttribute(attrname);
                elem.setAttribute(attrname, newvalue);
              };

              if (currentStyle.fillPaint) {
                change(target, 'fill', currentStyle.fillPaint);
              }

              if (currentStyle.fillOpacity) {
                change(target, 'fill-opacity', currentStyle.fillOpacity);
              }

              if (currentStyle.strokePaint) {
                change(target, 'stroke', currentStyle.strokePaint);
              }

              if (currentStyle.strokeOpacity) {
                change(target, 'stroke-opacity', currentStyle.strokeOpacity);
              }

              if (currentStyle.strokeWidth) {
                change(target, 'stroke-width', currentStyle.strokeWidth);
              }

              if (currentStyle.strokeDashArray) {
                change(target, 'stroke-dasharray', currentStyle.strokeDashArray);
              }

              if (currentStyle.opacity) {
                change(target, 'opacity', currentStyle.opacity);
              }

              if (currentStyle.strokeLinecap) {
                change(target, 'stroke-linecap', currentStyle.strokeLinecap);
              }

              if (currentStyle.strokeLinejoin) {
                change(target, 'stroke-linejoin', currentStyle.strokeLinejoin);
              }

              addToHistory(new ChangeElementCommand(target, changes));
            }
          }
        }

      };
    }

  };

  return extEyedropper;

}());