2707 lines
74 KiB
JavaScript
2707 lines
74 KiB
JavaScript
/* globals jQuery */
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/**
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* Path functionality
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* @module path
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* @license MIT
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*
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* @copyright 2011 Alexis Deveria, 2011 Jeff Schiller
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*/
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import './svgpathseg.js';
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import {NS} from './namespaces.js';
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import {getTransformList} from './svgtransformlist.js';
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import {shortFloat} from './units.js';
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import {ChangeElementCommand, BatchCommand} from './history.js';
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import {
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transformPoint, getMatrix, snapToAngle, rectsIntersect,
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transformListToTransform
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} from './math.js';
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import {
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assignAttributes, getElem, getRotationAngle, getBBox,
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getRefElem, findDefs, snapToGrid, isNullish,
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getBBox as utilsGetBBox
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} from './utilities.js';
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import {
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supportsPathInsertItemBefore, supportsPathReplaceItem, isWebkit
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} from './browser.js';
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const $ = jQuery;
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const segData = {
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2: ['x', 'y'], // PATHSEG_MOVETO_ABS
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4: ['x', 'y'], // PATHSEG_LINETO_ABS
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6: ['x', 'y', 'x1', 'y1', 'x2', 'y2'], // PATHSEG_CURVETO_CUBIC_ABS
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8: ['x', 'y', 'x1', 'y1'], // PATHSEG_CURVETO_QUADRATIC_ABS
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10: ['x', 'y', 'r1', 'r2', 'angle', 'largeArcFlag', 'sweepFlag'], // PATHSEG_ARC_ABS
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12: ['x'], // PATHSEG_LINETO_HORIZONTAL_ABS
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14: ['y'], // PATHSEG_LINETO_VERTICAL_ABS
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16: ['x', 'y', 'x2', 'y2'], // PATHSEG_CURVETO_CUBIC_SMOOTH_ABS
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18: ['x', 'y'] // PATHSEG_CURVETO_QUADRATIC_SMOOTH_ABS
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};
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/**
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* @tutorial LocaleDocs
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* @typedef {module:locale.LocaleStrings|PlainObject} module:path.uiStrings
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* @property {PlainObject.<string, string>} ui
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*/
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const uiStrings = {};
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/**
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* @function module:path.setUiStrings
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* @param {module:path.uiStrings} strs
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* @returns {undefined}
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*/
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export const setUiStrings = function (strs) {
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Object.assign(uiStrings, strs.ui);
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};
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let pathFuncs = [];
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let linkControlPts = true;
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// Stores references to paths via IDs.
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// TODO: Make this cross-document happy.
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let pathData = {};
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/**
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* @function module:path.setLinkControlPoints
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* @param {boolean} lcp
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* @returns {undefined}
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*/
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export const setLinkControlPoints = function (lcp) {
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linkControlPts = lcp;
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};
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/**
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* @name module:path.path
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* @type {null|module:path.Path}
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* @memberof module:path
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*/
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export let path = null; // eslint-disable-line import/no-mutable-exports
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let editorContext_ = null;
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/**
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* @external MouseEvent
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*/
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/**
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* Object with the following keys/values
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* @typedef {PlainObject} module:path.SVGElementJSON
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* @property {string} element - Tag name of the SVG element to create
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* @property {PlainObject.<string, string>} attr - Has key-value attributes to assign to the new element
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* @property {boolean} [curStyles=false] - Indicates whether current style attributes should be applied first
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* @property {module:path.SVGElementJSON[]} [children] - Data objects to be added recursively as children
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* @property {string} [namespace="http://www.w3.org/2000/svg"] - Indicate a (non-SVG) namespace
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*/
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/**
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* @interface module:path.EditorContext
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* @property {module:select.SelectorManager} selectorManager
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* @property {module:svgcanvas.SvgCanvas} canvas
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*/
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/**
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* @function module:path.EditorContext#call
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* @param {"selected"|"changed"} ev - String with the event name
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* @param {module:svgcanvas.SvgCanvas#event:selected|module:svgcanvas.SvgCanvas#event:changed} arg - Argument to pass through to the callback function. If the event is "changed", an array of `Element`s is passed; if "selected", a single-item array of `Element` is passed.
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* @returns {undefined}
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*/
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/**
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* @function module:path.EditorContext#resetD
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* @param {SVGPathElement} p
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* @returns {undefined}
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*/
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/**
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* Note: This doesn't round to an integer necessarily
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* @function module:path.EditorContext#round
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* @param {Float} val
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* @returns {Float} Rounded value to nearest value based on `currentZoom`
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*/
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/**
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* @function module:path.EditorContext#clearSelection
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* @param {boolean} [noCall] - When `true`, does not call the "selected" handler
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* @returns {undefined}
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*/
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/**
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* @function module:path.EditorContext#addToSelection
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* @param {Element[]} elemsToAdd - An array of DOM elements to add to the selection
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* @param {boolean} showGrips - Indicates whether the resize grips should be shown
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* @returns {undefined}
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*/
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/**
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* @function module:path.EditorContext#addCommandToHistory
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* @param {Command} cmd
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* @returns {undefined}
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*/
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/**
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* @function module:path.EditorContext#remapElement
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* @param {Element} selected - DOM element to be changed
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* @param {PlainObject.<string, string>} changes - Object with changes to be remapped
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* @param {SVGMatrix} m - Matrix object to use for remapping coordinates
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* @returns {undefined}
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*/
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/**
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* @function module:path.EditorContext#addSVGElementFromJson
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* @param {module:path.SVGElementJSON} data
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* @returns {Element} The new element
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*/
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/**
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* @function module:path.EditorContext#getGridSnapping
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* @returns {boolean}
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*/
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/**
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* @function module:path.EditorContext#getOpacity
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* @returns {Float}
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*/
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/**
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* @function module:path.EditorContext#getSelectedElements
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* @returns {Element[]} the array with selected DOM elements
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*/
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/**
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* @function module:path.EditorContext#getContainer
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* @returns {Element}
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*/
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/**
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* @function module:path.EditorContext#setStarted
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* @param {boolean} s
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* @returns {undefined}
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*/
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/**
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* @function module:path.EditorContext#getRubberBox
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* @returns {SVGRectElement}
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*/
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/**
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* @function module:path.EditorContext#setRubberBox
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* @param {SVGRectElement} rb
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* @returns {SVGRectElement} Same as parameter passed in
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*/
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/**
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* @function module:path.EditorContext#addPtsToSelection
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* @param {PlainObject} cfg
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* @param {boolean} cfg.closedSubpath
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* @param {SVGCircleElement[]} cfg.grips
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* @returns {undefined}
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*/
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/**
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* @function module:path.EditorContext#endChanges
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* @param {PlainObject} cfg
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* @param {string} cfg.cmd
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* @param {Element} cfg.elem
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* @returns {undefined}
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*/
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/**
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* @function module:path.EditorContext#getCurrentZoom
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* @returns {Float} The current zoom level
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*/
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/**
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* Returns the last created DOM element ID string
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* @function module:path.EditorContext#getId
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* @returns {string}
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*/
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/**
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* Creates and returns a unique ID string for a DOM element
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* @function module:path.EditorContext#getNextId
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* @returns {string}
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*/
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/**
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* Gets the desired element from a mouse event
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* @function module:path.EditorContext#getMouseTarget
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* @param {external:MouseEvent} evt - Event object from the mouse event
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* @returns {Element} DOM element we want
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*/
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/**
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* @function module:path.EditorContext#getCurrentMode
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* @returns {string}
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*/
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/**
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* @function module:path.EditorContext#setCurrentMode
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* @param {string} cm The mode
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* @returns {string} The same mode as passed in
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*/
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/**
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* @function module:path.EditorContext#getDrawnPath
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* @returns {SVGPathElement|null}
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*/
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/**
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* @function module:path.EditorContext#setDrawnPath
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* @param {SVGPathElement|null} dp
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* @returns {SVGPathElement|null} The same value as passed in
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*/
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/**
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* @function module:path.EditorContext#getSVGRoot
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* @returns {SVGSVGElement}
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*/
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/**
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* @function module:path.init
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* @param {module:path.EditorContext} editorContext
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* @returns {undefined}
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*/
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export const init = function (editorContext) {
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editorContext_ = editorContext;
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pathFuncs = [0, 'ClosePath'];
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const pathFuncsStrs = [
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'Moveto', 'Lineto', 'CurvetoCubic', 'CurvetoQuadratic', 'Arc',
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'LinetoHorizontal', 'LinetoVertical', 'CurvetoCubicSmooth', 'CurvetoQuadraticSmooth'
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];
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$.each(pathFuncsStrs, function (i, s) {
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pathFuncs.push(s + 'Abs');
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pathFuncs.push(s + 'Rel');
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});
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};
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/**
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* @function module:path.insertItemBefore
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* @param {Element} elem
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* @param {Segment} newseg
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* @param {Integer} index
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* @returns {undefined}
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*/
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export const insertItemBefore = function (elem, newseg, index) {
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// Support insertItemBefore on paths for FF2
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const list = elem.pathSegList;
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if (supportsPathInsertItemBefore()) {
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list.insertItemBefore(newseg, index);
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return;
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}
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const len = list.numberOfItems;
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const arr = [];
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for (let i = 0; i < len; i++) {
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const curSeg = list.getItem(i);
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arr.push(curSeg);
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}
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list.clear();
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for (let i = 0; i < len; i++) {
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if (i === index) { // index + 1
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list.appendItem(newseg);
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}
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list.appendItem(arr[i]);
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}
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};
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/**
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* @function module:path.ptObjToArr
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* @todo See if this should just live in `replacePathSeg`
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* @param {string} type
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* @param {SVGPathSegMovetoAbs|SVGPathSegLinetoAbs|SVGPathSegCurvetoCubicAbs|SVGPathSegCurvetoQuadraticAbs|SVGPathSegArcAbs|SVGPathSegLinetoHorizontalAbs|SVGPathSegLinetoVerticalAbs|SVGPathSegCurvetoCubicSmoothAbs|SVGPathSegCurvetoQuadraticSmoothAbs} segItem
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* @returns {ArgumentsArray}
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*/
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export const ptObjToArr = function (type, segItem) {
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const props = segData[type];
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return props.map((prop) => {
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return segItem[prop];
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});
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};
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/**
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* @function module:path.getGripPt
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* @param {Segment} seg
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* @param {module:math.XYObject} altPt
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* @returns {module:math.XYObject}
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*/
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export const getGripPt = function (seg, altPt) {
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const {path: pth} = seg;
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let out = {
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x: altPt ? altPt.x : seg.item.x,
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y: altPt ? altPt.y : seg.item.y
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};
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if (pth.matrix) {
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const pt = transformPoint(out.x, out.y, pth.matrix);
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out = pt;
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}
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const currentZoom = editorContext_.getCurrentZoom();
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out.x *= currentZoom;
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out.y *= currentZoom;
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return out;
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};
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/**
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* @function module:path.getPointFromGrip
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* @param {module:math.XYObject} pt
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* @param {module:path.Path} pth
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* @returns {module:math.XYObject}
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*/
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export const getPointFromGrip = function (pt, pth) {
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const out = {
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x: pt.x,
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y: pt.y
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};
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if (pth.matrix) {
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pt = transformPoint(out.x, out.y, pth.imatrix);
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out.x = pt.x;
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out.y = pt.y;
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}
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const currentZoom = editorContext_.getCurrentZoom();
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out.x /= currentZoom;
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out.y /= currentZoom;
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return out;
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};
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/**
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* Requires prior call to `setUiStrings` if `xlink:title`
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* to be set on the grip.
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* @function module:path.addPointGrip
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* @param {Integer} index
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* @param {Integer} x
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* @param {Integer} y
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* @returns {SVGCircleElement}
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*/
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export const addPointGrip = function (index, x, y) {
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// create the container of all the point grips
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const pointGripContainer = getGripContainer();
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let pointGrip = getElem('pathpointgrip_' + index);
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// create it
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if (!pointGrip) {
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pointGrip = document.createElementNS(NS.SVG, 'circle');
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const atts = {
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id: 'pathpointgrip_' + index,
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display: 'none',
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r: 4,
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fill: '#0FF',
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stroke: '#00F',
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'stroke-width': 2,
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cursor: 'move',
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style: 'pointer-events:all'
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};
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if ('pathNodeTooltip' in uiStrings) { // May be empty if running path.js without svg-editor
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atts['xlink:title'] = uiStrings.pathNodeTooltip;
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}
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assignAttributes(pointGrip, atts);
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pointGrip = pointGripContainer.appendChild(pointGrip);
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const grip = $('#pathpointgrip_' + index);
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grip.dblclick(function () {
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if (path) {
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path.setSegType();
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}
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});
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}
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if (x && y) {
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// set up the point grip element and display it
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assignAttributes(pointGrip, {
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cx: x,
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cy: y,
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display: 'inline'
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});
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}
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return pointGrip;
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};
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/**
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* @function module:path.getGripContainer
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* @returns {Element}
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*/
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export const getGripContainer = function () {
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let c = getElem('pathpointgrip_container');
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if (!c) {
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const parentElement = getElem('selectorParentGroup');
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c = parentElement.appendChild(document.createElementNS(NS.SVG, 'g'));
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c.id = 'pathpointgrip_container';
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}
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return c;
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};
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/**
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* Requires prior call to `setUiStrings` if `xlink:title`
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* to be set on the grip.
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* @function module:path.addCtrlGrip
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* @param {string} id
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* @returns {SVGCircleElement}
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*/
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export const addCtrlGrip = function (id) {
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let pointGrip = getElem('ctrlpointgrip_' + id);
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if (pointGrip) { return pointGrip; }
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pointGrip = document.createElementNS(NS.SVG, 'circle');
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const atts = {
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id: 'ctrlpointgrip_' + id,
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display: 'none',
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r: 4,
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fill: '#0FF',
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stroke: '#55F',
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'stroke-width': 1,
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cursor: 'move',
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style: 'pointer-events:all'
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};
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if ('pathCtrlPtTooltip' in uiStrings) { // May be empty if running path.js without svg-editor
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atts['xlink:title'] = uiStrings.pathCtrlPtTooltip;
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}
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assignAttributes(pointGrip, atts);
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getGripContainer().append(pointGrip);
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return pointGrip;
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};
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/**
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* @function module:path.getCtrlLine
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* @param {string} id
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* @returns {SVGLineElement}
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*/
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export const getCtrlLine = function (id) {
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let ctrlLine = getElem('ctrlLine_' + id);
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if (ctrlLine) { return ctrlLine; }
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ctrlLine = document.createElementNS(NS.SVG, 'line');
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assignAttributes(ctrlLine, {
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id: 'ctrlLine_' + id,
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stroke: '#555',
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'stroke-width': 1,
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style: 'pointer-events:none'
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});
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getGripContainer().append(ctrlLine);
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return ctrlLine;
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};
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/**
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* @function module:path.getPointGrip
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* @param {Segment} seg
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* @param {boolean} update
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* @returns {SVGCircleElement}
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*/
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export const getPointGrip = function (seg, update) {
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const {index} = seg;
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const pointGrip = addPointGrip(index);
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if (update) {
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const pt = getGripPt(seg);
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assignAttributes(pointGrip, {
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cx: pt.x,
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cy: pt.y,
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display: 'inline'
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});
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}
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return pointGrip;
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};
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/**
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* @function module:path.getControlPoints
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* @param {Segment} seg
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* @returns {PlainObject.<string, SVGLineElement|SVGCircleElement>}
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*/
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export const getControlPoints = function (seg) {
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const {item, index} = seg;
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if (!('x1' in item) || !('x2' in item)) { return null; }
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const cpt = {};
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/* const pointGripContainer = */ getGripContainer();
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// Note that this is intentionally not seg.prev.item
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const prev = path.segs[index - 1].item;
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const segItems = [prev, item];
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for (let i = 1; i < 3; i++) {
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const id = index + 'c' + i;
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const ctrlLine = cpt['c' + i + '_line'] = getCtrlLine(id);
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const pt = getGripPt(seg, {x: item['x' + i], y: item['y' + i]});
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const gpt = getGripPt(seg, {x: segItems[i - 1].x, y: segItems[i - 1].y});
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assignAttributes(ctrlLine, {
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x1: pt.x,
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y1: pt.y,
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x2: gpt.x,
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y2: gpt.y,
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display: 'inline'
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});
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cpt['c' + i + '_line'] = ctrlLine;
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// create it
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const pointGrip = cpt['c' + i] = addCtrlGrip(id);
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|
assignAttributes(pointGrip, {
|
|
cx: pt.x,
|
|
cy: pt.y,
|
|
display: 'inline'
|
|
});
|
|
cpt['c' + i] = pointGrip;
|
|
}
|
|
return cpt;
|
|
};
|
|
|
|
/**
|
|
* This replaces the segment at the given index. Type is given as number.
|
|
* @function module:path.replacePathSeg
|
|
* @param {Integer} type Possible values set during {@link module:path.init}
|
|
* @param {Integer} index
|
|
* @param {ArgumentsArray} pts
|
|
* @param {SVGPathElement} elem
|
|
* @returns {undefined}
|
|
*/
|
|
export const replacePathSeg = function (type, index, pts, elem) {
|
|
const pth = elem || path.elem;
|
|
|
|
const func = 'createSVGPathSeg' + pathFuncs[type];
|
|
const seg = pth[func](...pts);
|
|
|
|
if (supportsPathReplaceItem()) {
|
|
pth.pathSegList.replaceItem(seg, index);
|
|
} else {
|
|
const segList = pth.pathSegList;
|
|
const len = segList.numberOfItems;
|
|
const arr = [];
|
|
for (let i = 0; i < len; i++) {
|
|
const curSeg = segList.getItem(i);
|
|
arr.push(curSeg);
|
|
}
|
|
segList.clear();
|
|
for (let i = 0; i < len; i++) {
|
|
if (i === index) {
|
|
segList.appendItem(seg);
|
|
} else {
|
|
segList.appendItem(arr[i]);
|
|
}
|
|
}
|
|
}
|
|
};
|
|
|
|
/**
|
|
* @function module:path.getSegSelector
|
|
* @param {Segment} seg
|
|
* @param {boolean} update
|
|
* @returns {SVGPathElement}
|
|
*/
|
|
export const getSegSelector = function (seg, update) {
|
|
const {index} = seg;
|
|
let segLine = getElem('segline_' + index);
|
|
if (!segLine) {
|
|
const pointGripContainer = getGripContainer();
|
|
// create segline
|
|
segLine = document.createElementNS(NS.SVG, 'path');
|
|
assignAttributes(segLine, {
|
|
id: 'segline_' + index,
|
|
display: 'none',
|
|
fill: 'none',
|
|
stroke: '#0FF',
|
|
'stroke-width': 2,
|
|
style: 'pointer-events:none',
|
|
d: 'M0,0 0,0'
|
|
});
|
|
pointGripContainer.append(segLine);
|
|
}
|
|
|
|
if (update) {
|
|
const {prev} = seg;
|
|
if (!prev) {
|
|
segLine.setAttribute('display', 'none');
|
|
return segLine;
|
|
}
|
|
|
|
const pt = getGripPt(prev);
|
|
// Set start point
|
|
replacePathSeg(2, 0, [pt.x, pt.y], segLine);
|
|
|
|
const pts = ptObjToArr(seg.type, seg.item); // , true);
|
|
for (let i = 0; i < pts.length; i += 2) {
|
|
const point = getGripPt(seg, {x: pts[i], y: pts[i + 1]});
|
|
pts[i] = point.x;
|
|
pts[i + 1] = point.y;
|
|
}
|
|
|
|
replacePathSeg(seg.type, 1, pts, segLine);
|
|
}
|
|
return segLine;
|
|
};
|
|
|
|
/**
|
|
* @typedef {PlainObject} Point
|
|
* @property {Integer} x The x value
|
|
* @property {Integer} y The y value
|
|
*/
|
|
|
|
/**
|
|
* Takes three points and creates a smoother line based on them.
|
|
* @function module:path.smoothControlPoints
|
|
* @param {Point} ct1 - Object with x and y values (first control point)
|
|
* @param {Point} ct2 - Object with x and y values (second control point)
|
|
* @param {Point} pt - Object with x and y values (third point)
|
|
* @returns {Point[]} Array of two "smoothed" point objects
|
|
*/
|
|
export const smoothControlPoints = function (ct1, ct2, pt) {
|
|
// each point must not be the origin
|
|
const x1 = ct1.x - pt.x,
|
|
y1 = ct1.y - pt.y,
|
|
x2 = ct2.x - pt.x,
|
|
y2 = ct2.y - pt.y;
|
|
|
|
if ((x1 !== 0 || y1 !== 0) && (x2 !== 0 || y2 !== 0)) {
|
|
const
|
|
r1 = Math.sqrt(x1 * x1 + y1 * y1),
|
|
r2 = Math.sqrt(x2 * x2 + y2 * y2),
|
|
nct1 = editorContext_.getSVGRoot().createSVGPoint(),
|
|
nct2 = editorContext_.getSVGRoot().createSVGPoint();
|
|
let anglea = Math.atan2(y1, x1),
|
|
angleb = Math.atan2(y2, x2);
|
|
if (anglea < 0) { anglea += 2 * Math.PI; }
|
|
if (angleb < 0) { angleb += 2 * Math.PI; }
|
|
|
|
const angleBetween = Math.abs(anglea - angleb),
|
|
angleDiff = Math.abs(Math.PI - angleBetween) / 2;
|
|
|
|
let newAnglea, newAngleb;
|
|
if (anglea - angleb > 0) {
|
|
newAnglea = angleBetween < Math.PI ? (anglea + angleDiff) : (anglea - angleDiff);
|
|
newAngleb = angleBetween < Math.PI ? (angleb - angleDiff) : (angleb + angleDiff);
|
|
} else {
|
|
newAnglea = angleBetween < Math.PI ? (anglea - angleDiff) : (anglea + angleDiff);
|
|
newAngleb = angleBetween < Math.PI ? (angleb + angleDiff) : (angleb - angleDiff);
|
|
}
|
|
|
|
// rotate the points
|
|
nct1.x = r1 * Math.cos(newAnglea) + pt.x;
|
|
nct1.y = r1 * Math.sin(newAnglea) + pt.y;
|
|
nct2.x = r2 * Math.cos(newAngleb) + pt.x;
|
|
nct2.y = r2 * Math.sin(newAngleb) + pt.y;
|
|
|
|
return [nct1, nct2];
|
|
}
|
|
return undefined;
|
|
};
|
|
|
|
/**
|
|
*
|
|
*/
|
|
export class Segment {
|
|
/**
|
|
* @param {Integer} index
|
|
* @param {SVGPathSeg} item
|
|
* @todo Is `item` be more constrained here?
|
|
*/
|
|
constructor (index, item) {
|
|
this.selected = false;
|
|
this.index = index;
|
|
this.item = item;
|
|
this.type = item.pathSegType;
|
|
|
|
this.ctrlpts = [];
|
|
this.ptgrip = null;
|
|
this.segsel = null;
|
|
}
|
|
|
|
/**
|
|
* @param {boolean} y
|
|
* @returns {undefined}
|
|
*/
|
|
showCtrlPts (y) {
|
|
for (const i in this.ctrlpts) {
|
|
if ({}.hasOwnProperty.call(this.ctrlpts, i)) {
|
|
this.ctrlpts[i].setAttribute('display', y ? 'inline' : 'none');
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @param {boolean} y
|
|
* @returns {undefined}
|
|
*/
|
|
selectCtrls (y) {
|
|
$('#ctrlpointgrip_' + this.index + 'c1, #ctrlpointgrip_' + this.index + 'c2')
|
|
.attr('fill', y ? '#0FF' : '#EEE');
|
|
}
|
|
|
|
/**
|
|
* @param {boolean} y
|
|
* @returns {undefined}
|
|
*/
|
|
show (y) {
|
|
if (this.ptgrip) {
|
|
this.ptgrip.setAttribute('display', y ? 'inline' : 'none');
|
|
this.segsel.setAttribute('display', y ? 'inline' : 'none');
|
|
// Show/hide all control points if available
|
|
this.showCtrlPts(y);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @param {boolean} y
|
|
* @returns {undefined}
|
|
*/
|
|
select (y) {
|
|
if (this.ptgrip) {
|
|
this.ptgrip.setAttribute('stroke', y ? '#0FF' : '#00F');
|
|
this.segsel.setAttribute('display', y ? 'inline' : 'none');
|
|
if (this.ctrlpts) {
|
|
this.selectCtrls(y);
|
|
}
|
|
this.selected = y;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @returns {undefined}
|
|
*/
|
|
addGrip () {
|
|
this.ptgrip = getPointGrip(this, true);
|
|
this.ctrlpts = getControlPoints(this); // , true);
|
|
this.segsel = getSegSelector(this, true);
|
|
}
|
|
|
|
/**
|
|
* @param {boolean} full
|
|
* @returns {undefined}
|
|
*/
|
|
update (full) {
|
|
if (this.ptgrip) {
|
|
const pt = getGripPt(this);
|
|
assignAttributes(this.ptgrip, {
|
|
cx: pt.x,
|
|
cy: pt.y
|
|
});
|
|
|
|
getSegSelector(this, true);
|
|
|
|
if (this.ctrlpts) {
|
|
if (full) {
|
|
this.item = path.elem.pathSegList.getItem(this.index);
|
|
this.type = this.item.pathSegType;
|
|
}
|
|
getControlPoints(this);
|
|
}
|
|
// this.segsel.setAttribute('display', y ? 'inline' : 'none');
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @param {Integer} dx
|
|
* @param {Integer} dy
|
|
* @returns {undefined}
|
|
*/
|
|
move (dx, dy) {
|
|
const {item} = this;
|
|
|
|
const curPts = this.ctrlpts
|
|
? [
|
|
item.x += dx, item.y += dy,
|
|
item.x1, item.y1, item.x2 += dx, item.y2 += dy
|
|
]
|
|
: [item.x += dx, item.y += dy];
|
|
|
|
replacePathSeg(this.type, this.index, curPts);
|
|
|
|
if (this.next && this.next.ctrlpts) {
|
|
const next = this.next.item;
|
|
const nextPts = [
|
|
next.x, next.y,
|
|
next.x1 += dx, next.y1 += dy, next.x2, next.y2
|
|
];
|
|
replacePathSeg(this.next.type, this.next.index, nextPts);
|
|
}
|
|
|
|
if (this.mate) {
|
|
// The last point of a closed subpath has a 'mate',
|
|
// which is the 'M' segment of the subpath
|
|
const {item: itm} = this.mate;
|
|
const pts = [itm.x += dx, itm.y += dy];
|
|
replacePathSeg(this.mate.type, this.mate.index, pts);
|
|
// Has no grip, so does not need 'updating'?
|
|
}
|
|
|
|
this.update(true);
|
|
if (this.next) { this.next.update(true); }
|
|
}
|
|
|
|
/**
|
|
* @param {Integer} num
|
|
* @returns {undefined}
|
|
*/
|
|
setLinked (num) {
|
|
let seg, anum, pt;
|
|
if (num === 2) {
|
|
anum = 1;
|
|
seg = this.next;
|
|
if (!seg) { return; }
|
|
pt = this.item;
|
|
} else {
|
|
anum = 2;
|
|
seg = this.prev;
|
|
if (!seg) { return; }
|
|
pt = seg.item;
|
|
}
|
|
|
|
const {item} = seg;
|
|
item['x' + anum] = pt.x + (pt.x - this.item['x' + num]);
|
|
item['y' + anum] = pt.y + (pt.y - this.item['y' + num]);
|
|
|
|
const pts = [
|
|
item.x, item.y,
|
|
item.x1, item.y1,
|
|
item.x2, item.y2
|
|
];
|
|
|
|
replacePathSeg(seg.type, seg.index, pts);
|
|
seg.update(true);
|
|
}
|
|
|
|
/**
|
|
* @param {Integer} num
|
|
* @param {Integer} dx
|
|
* @param {Integer} dy
|
|
* @returns {undefined}
|
|
*/
|
|
moveCtrl (num, dx, dy) {
|
|
const {item} = this;
|
|
item['x' + num] += dx;
|
|
item['y' + num] += dy;
|
|
|
|
const pts = [
|
|
item.x, item.y,
|
|
item.x1, item.y1, item.x2, item.y2
|
|
];
|
|
|
|
replacePathSeg(this.type, this.index, pts);
|
|
this.update(true);
|
|
}
|
|
|
|
/**
|
|
* @param {Integer} newType Possible values set during {@link module:path.init}
|
|
* @param {ArgumentsArray} pts
|
|
* @returns {undefined}
|
|
*/
|
|
setType (newType, pts) {
|
|
replacePathSeg(newType, this.index, pts);
|
|
this.type = newType;
|
|
this.item = path.elem.pathSegList.getItem(this.index);
|
|
this.showCtrlPts(newType === 6);
|
|
this.ctrlpts = getControlPoints(this);
|
|
this.update(true);
|
|
}
|
|
}
|
|
|
|
/**
|
|
*
|
|
*/
|
|
export class Path {
|
|
/**
|
|
* @param {SVGPathElement} elem
|
|
* @throws {Error} If constructed without a path element
|
|
*/
|
|
constructor (elem) {
|
|
if (!elem || elem.tagName !== 'path') {
|
|
throw new Error('svgedit.path.Path constructed without a <path> element');
|
|
}
|
|
|
|
this.elem = elem;
|
|
this.segs = [];
|
|
this.selected_pts = [];
|
|
path = this; // eslint-disable-line consistent-this
|
|
|
|
this.init();
|
|
}
|
|
|
|
/**
|
|
* Reset path data.
|
|
* @returns {module:path.Path}
|
|
*/
|
|
init () {
|
|
// Hide all grips, etc
|
|
|
|
// fixed, needed to work on all found elements, not just first
|
|
$(getGripContainer()).find('*').each(function () {
|
|
$(this).attr('display', 'none');
|
|
});
|
|
|
|
const segList = this.elem.pathSegList;
|
|
const len = segList.numberOfItems;
|
|
this.segs = [];
|
|
this.selected_pts = [];
|
|
this.first_seg = null;
|
|
|
|
// Set up segs array
|
|
for (let i = 0; i < len; i++) {
|
|
const item = segList.getItem(i);
|
|
const segment = new Segment(i, item);
|
|
segment.path = this;
|
|
this.segs.push(segment);
|
|
}
|
|
|
|
const {segs} = this;
|
|
|
|
let startI = null;
|
|
for (let i = 0; i < len; i++) {
|
|
const seg = segs[i];
|
|
const nextSeg = (i + 1) >= len ? null : segs[i + 1];
|
|
const prevSeg = (i - 1) < 0 ? null : segs[i - 1];
|
|
if (seg.type === 2) {
|
|
if (prevSeg && prevSeg.type !== 1) {
|
|
// New sub-path, last one is open,
|
|
// so add a grip to last sub-path's first point
|
|
const startSeg = segs[startI];
|
|
startSeg.next = segs[startI + 1];
|
|
startSeg.next.prev = startSeg;
|
|
startSeg.addGrip();
|
|
}
|
|
// Remember that this is a starter seg
|
|
startI = i;
|
|
} else if (nextSeg && nextSeg.type === 1) {
|
|
// This is the last real segment of a closed sub-path
|
|
// Next is first seg after "M"
|
|
seg.next = segs[startI + 1];
|
|
|
|
// First seg after "M"'s prev is this
|
|
seg.next.prev = seg;
|
|
seg.mate = segs[startI];
|
|
seg.addGrip();
|
|
if (isNullish(this.first_seg)) {
|
|
this.first_seg = seg;
|
|
}
|
|
} else if (!nextSeg) {
|
|
if (seg.type !== 1) {
|
|
// Last seg, doesn't close so add a grip
|
|
// to last sub-path's first point
|
|
const startSeg = segs[startI];
|
|
startSeg.next = segs[startI + 1];
|
|
startSeg.next.prev = startSeg;
|
|
startSeg.addGrip();
|
|
seg.addGrip();
|
|
|
|
if (!this.first_seg) {
|
|
// Open path, so set first as real first and add grip
|
|
this.first_seg = segs[startI];
|
|
}
|
|
}
|
|
} else if (seg.type !== 1) {
|
|
// Regular segment, so add grip and its "next"
|
|
seg.addGrip();
|
|
|
|
// Don't set its "next" if it's an "M"
|
|
if (nextSeg && nextSeg.type !== 2) {
|
|
seg.next = nextSeg;
|
|
seg.next.prev = seg;
|
|
}
|
|
}
|
|
}
|
|
return this;
|
|
}
|
|
|
|
/**
|
|
* @callback module:path.PathEachSegCallback
|
|
* @this module:path.Segment
|
|
* @param {Integer} i The index of the seg being iterated
|
|
* @returns {boolean|undefined} Will stop execution of `eachSeg` if returns `false`
|
|
*/
|
|
/**
|
|
* @param {module:path.PathEachSegCallback} fn
|
|
* @returns {undefined}
|
|
*/
|
|
eachSeg (fn) {
|
|
const len = this.segs.length;
|
|
for (let i = 0; i < len; i++) {
|
|
const ret = fn.call(this.segs[i], i);
|
|
if (ret === false) { break; }
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @param {Integer} index
|
|
* @returns {undefined}
|
|
*/
|
|
addSeg (index) {
|
|
// Adds a new segment
|
|
const seg = this.segs[index];
|
|
if (!seg.prev) { return; }
|
|
|
|
const {prev} = seg;
|
|
let newseg, newX, newY;
|
|
switch (seg.item.pathSegType) {
|
|
case 4: {
|
|
newX = (seg.item.x + prev.item.x) / 2;
|
|
newY = (seg.item.y + prev.item.y) / 2;
|
|
newseg = this.elem.createSVGPathSegLinetoAbs(newX, newY);
|
|
break;
|
|
} case 6: { // make it a curved segment to preserve the shape (WRS)
|
|
// https://en.wikipedia.org/wiki/De_Casteljau%27s_algorithm#Geometric_interpretation
|
|
const p0x = (prev.item.x + seg.item.x1) / 2;
|
|
const p1x = (seg.item.x1 + seg.item.x2) / 2;
|
|
const p2x = (seg.item.x2 + seg.item.x) / 2;
|
|
const p01x = (p0x + p1x) / 2;
|
|
const p12x = (p1x + p2x) / 2;
|
|
newX = (p01x + p12x) / 2;
|
|
const p0y = (prev.item.y + seg.item.y1) / 2;
|
|
const p1y = (seg.item.y1 + seg.item.y2) / 2;
|
|
const p2y = (seg.item.y2 + seg.item.y) / 2;
|
|
const p01y = (p0y + p1y) / 2;
|
|
const p12y = (p1y + p2y) / 2;
|
|
newY = (p01y + p12y) / 2;
|
|
newseg = this.elem.createSVGPathSegCurvetoCubicAbs(newX, newY, p0x, p0y, p01x, p01y);
|
|
const pts = [seg.item.x, seg.item.y, p12x, p12y, p2x, p2y];
|
|
replacePathSeg(seg.type, index, pts);
|
|
break;
|
|
}
|
|
}
|
|
|
|
insertItemBefore(this.elem, newseg, index);
|
|
}
|
|
|
|
/**
|
|
* @param {Integer} index
|
|
* @returns {undefined}
|
|
*/
|
|
deleteSeg (index) {
|
|
const seg = this.segs[index];
|
|
const list = this.elem.pathSegList;
|
|
|
|
seg.show(false);
|
|
const {next} = seg;
|
|
if (seg.mate) {
|
|
// Make the next point be the "M" point
|
|
const pt = [next.item.x, next.item.y];
|
|
replacePathSeg(2, next.index, pt);
|
|
|
|
// Reposition last node
|
|
replacePathSeg(4, seg.index, pt);
|
|
|
|
list.removeItem(seg.mate.index);
|
|
} else if (!seg.prev) {
|
|
// First node of open path, make next point the M
|
|
// const {item} = seg;
|
|
const pt = [next.item.x, next.item.y];
|
|
replacePathSeg(2, seg.next.index, pt);
|
|
list.removeItem(index);
|
|
} else {
|
|
list.removeItem(index);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @param {Integer} index
|
|
* @returns {undefined}
|
|
*/
|
|
removePtFromSelection (index) {
|
|
const pos = this.selected_pts.indexOf(index);
|
|
if (pos === -1) {
|
|
return;
|
|
}
|
|
this.segs[index].select(false);
|
|
this.selected_pts.splice(pos, 1);
|
|
}
|
|
|
|
/**
|
|
* @returns {undefined}
|
|
*/
|
|
clearSelection () {
|
|
this.eachSeg(function () {
|
|
// 'this' is the segment here
|
|
this.select(false);
|
|
});
|
|
this.selected_pts = [];
|
|
}
|
|
|
|
/**
|
|
* @returns {undefined}
|
|
*/
|
|
storeD () {
|
|
this.last_d = this.elem.getAttribute('d');
|
|
}
|
|
|
|
/**
|
|
* @param {Integer} y
|
|
* @returns {undefined}
|
|
*/
|
|
show (y) {
|
|
// Shows this path's segment grips
|
|
this.eachSeg(function () {
|
|
// 'this' is the segment here
|
|
this.show(y);
|
|
});
|
|
if (y) {
|
|
this.selectPt(this.first_seg.index);
|
|
}
|
|
return this;
|
|
}
|
|
|
|
/**
|
|
* Move selected points.
|
|
* @param {Integer} dx
|
|
* @param {Integer} dy
|
|
* @returns {undefined}
|
|
*/
|
|
movePts (dx, dy) {
|
|
let i = this.selected_pts.length;
|
|
while (i--) {
|
|
const seg = this.segs[this.selected_pts[i]];
|
|
seg.move(dx, dy);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @param {Integer} dx
|
|
* @param {Integer} dy
|
|
* @returns {undefined}
|
|
*/
|
|
moveCtrl (dx, dy) {
|
|
const seg = this.segs[this.selected_pts[0]];
|
|
seg.moveCtrl(this.dragctrl, dx, dy);
|
|
if (linkControlPts) {
|
|
seg.setLinked(this.dragctrl);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @param {?Integer} newType See {@link https://www.w3.org/TR/SVG/single-page.html#paths-InterfaceSVGPathSeg}
|
|
* @returns {undefined}
|
|
*/
|
|
setSegType (newType) {
|
|
this.storeD();
|
|
let i = this.selected_pts.length;
|
|
let text;
|
|
while (i--) {
|
|
const selPt = this.selected_pts[i];
|
|
|
|
// Selected seg
|
|
const cur = this.segs[selPt];
|
|
const {prev} = cur;
|
|
if (!prev) { continue; }
|
|
|
|
if (!newType) { // double-click, so just toggle
|
|
text = 'Toggle Path Segment Type';
|
|
|
|
// Toggle segment to curve/straight line
|
|
const oldType = cur.type;
|
|
|
|
newType = (oldType === 6) ? 4 : 6;
|
|
}
|
|
|
|
newType = Number(newType);
|
|
|
|
const curX = cur.item.x;
|
|
const curY = cur.item.y;
|
|
const prevX = prev.item.x;
|
|
const prevY = prev.item.y;
|
|
let points;
|
|
switch (newType) {
|
|
case 6: {
|
|
if (cur.olditem) {
|
|
const old = cur.olditem;
|
|
points = [curX, curY, old.x1, old.y1, old.x2, old.y2];
|
|
} else {
|
|
const diffX = curX - prevX;
|
|
const diffY = curY - prevY;
|
|
// get control points from straight line segment
|
|
/*
|
|
const ct1x = (prevX + (diffY/2));
|
|
const ct1y = (prevY - (diffX/2));
|
|
const ct2x = (curX + (diffY/2));
|
|
const ct2y = (curY - (diffX/2));
|
|
*/
|
|
// create control points on the line to preserve the shape (WRS)
|
|
const ct1x = (prevX + (diffX / 3));
|
|
const ct1y = (prevY + (diffY / 3));
|
|
const ct2x = (curX - (diffX / 3));
|
|
const ct2y = (curY - (diffY / 3));
|
|
points = [curX, curY, ct1x, ct1y, ct2x, ct2y];
|
|
}
|
|
break;
|
|
} case 4: {
|
|
points = [curX, curY];
|
|
|
|
// Store original prevve segment nums
|
|
cur.olditem = cur.item;
|
|
break;
|
|
}
|
|
}
|
|
|
|
cur.setType(newType, points);
|
|
}
|
|
path.endChanges(text);
|
|
}
|
|
|
|
/**
|
|
* @param {Integer} pt
|
|
* @param {Integer} ctrlNum
|
|
* @returns {undefined}
|
|
*/
|
|
selectPt (pt, ctrlNum) {
|
|
this.clearSelection();
|
|
if (isNullish(pt)) {
|
|
this.eachSeg(function (i) {
|
|
// 'this' is the segment here.
|
|
if (this.prev) {
|
|
pt = i;
|
|
}
|
|
});
|
|
}
|
|
this.addPtsToSelection(pt);
|
|
if (ctrlNum) {
|
|
this.dragctrl = ctrlNum;
|
|
|
|
if (linkControlPts) {
|
|
this.segs[pt].setLinked(ctrlNum);
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Update position of all points.
|
|
* @returns {Path}
|
|
*/
|
|
update () {
|
|
const {elem} = this;
|
|
if (getRotationAngle(elem)) {
|
|
this.matrix = getMatrix(elem);
|
|
this.imatrix = this.matrix.inverse();
|
|
} else {
|
|
this.matrix = null;
|
|
this.imatrix = null;
|
|
}
|
|
|
|
this.eachSeg(function (i) {
|
|
this.item = elem.pathSegList.getItem(i);
|
|
this.update();
|
|
});
|
|
|
|
return this;
|
|
}
|
|
|
|
/**
|
|
* @param {string} text
|
|
* @returns {undefined}
|
|
*/
|
|
endChanges (text) {
|
|
if (isWebkit()) { editorContext_.resetD(this.elem); }
|
|
const cmd = new ChangeElementCommand(this.elem, {d: this.last_d}, text);
|
|
editorContext_.endChanges({cmd, elem: this.elem});
|
|
}
|
|
|
|
/**
|
|
* @param {Integer|Integer[]} indexes
|
|
* @returns {undefined}
|
|
*/
|
|
addPtsToSelection (indexes) {
|
|
if (!Array.isArray(indexes)) { indexes = [indexes]; }
|
|
for (let i = 0; i < indexes.length; i++) {
|
|
const index = indexes[i];
|
|
const seg = this.segs[index];
|
|
if (seg.ptgrip) {
|
|
if (!this.selected_pts.includes(index) && index >= 0) {
|
|
this.selected_pts.push(index);
|
|
}
|
|
}
|
|
}
|
|
this.selected_pts.sort();
|
|
let i = this.selected_pts.length;
|
|
const grips = [];
|
|
grips.length = i;
|
|
// Loop through points to be selected and highlight each
|
|
while (i--) {
|
|
const pt = this.selected_pts[i];
|
|
const seg = this.segs[pt];
|
|
seg.select(true);
|
|
grips[i] = seg.ptgrip;
|
|
}
|
|
|
|
const closedSubpath = Path.subpathIsClosed(this.selected_pts[0]);
|
|
editorContext_.addPtsToSelection({grips, closedSubpath});
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @param {Integer} index
|
|
* @returns {boolean}
|
|
*/
|
|
Path.subpathIsClosed = function (index) {
|
|
let clsd = false;
|
|
// Check if subpath is already open
|
|
path.eachSeg(function (i) {
|
|
if (i <= index) { return true; }
|
|
if (this.type === 2) {
|
|
// Found M first, so open
|
|
return false;
|
|
}
|
|
if (this.type === 1) {
|
|
// Found Z first, so closed
|
|
clsd = true;
|
|
return false;
|
|
}
|
|
return true;
|
|
});
|
|
|
|
return clsd;
|
|
};
|
|
|
|
/**
|
|
* @function module:path.getPath_
|
|
* @param {SVGPathElement} elem
|
|
* @returns {module:path.Path}
|
|
*/
|
|
export const getPath_ = function (elem) {
|
|
let p = pathData[elem.id];
|
|
if (!p) {
|
|
p = pathData[elem.id] = new Path(elem);
|
|
}
|
|
return p;
|
|
};
|
|
|
|
/**
|
|
* @function module:path.removePath_
|
|
* @param {string} id
|
|
* @returns {undefined}
|
|
*/
|
|
export const removePath_ = function (id) {
|
|
if (id in pathData) { delete pathData[id]; }
|
|
};
|
|
|
|
let newcx, newcy, oldcx, oldcy, angle;
|
|
|
|
const getRotVals = function (x, y) {
|
|
let dx = x - oldcx;
|
|
let dy = y - oldcy;
|
|
|
|
// rotate the point around the old center
|
|
let r = Math.sqrt(dx * dx + dy * dy);
|
|
let theta = Math.atan2(dy, dx) + angle;
|
|
dx = r * Math.cos(theta) + oldcx;
|
|
dy = r * Math.sin(theta) + oldcy;
|
|
|
|
// dx,dy should now hold the actual coordinates of each
|
|
// point after being rotated
|
|
|
|
// now we want to rotate them around the new center in the reverse direction
|
|
dx -= newcx;
|
|
dy -= newcy;
|
|
|
|
r = Math.sqrt(dx * dx + dy * dy);
|
|
theta = Math.atan2(dy, dx) - angle;
|
|
|
|
return {x: r * Math.cos(theta) + newcx,
|
|
y: r * Math.sin(theta) + newcy};
|
|
};
|
|
|
|
// If the path was rotated, we must now pay the piper:
|
|
// Every path point must be rotated into the rotated coordinate system of
|
|
// its old center, then determine the new center, then rotate it back
|
|
// This is because we want the path to remember its rotation
|
|
|
|
/**
|
|
* @function module:path.recalcRotatedPath
|
|
* @todo This is still using ye olde transform methods, can probably
|
|
* be optimized or even taken care of by `recalculateDimensions`
|
|
* @returns {undefined}
|
|
*/
|
|
export const recalcRotatedPath = function () {
|
|
const currentPath = path.elem;
|
|
angle = getRotationAngle(currentPath, true);
|
|
if (!angle) { return; }
|
|
// selectedBBoxes[0] = path.oldbbox;
|
|
const oldbox = path.oldbbox; // selectedBBoxes[0],
|
|
oldcx = oldbox.x + oldbox.width / 2;
|
|
oldcy = oldbox.y + oldbox.height / 2;
|
|
const box = getBBox(currentPath);
|
|
newcx = box.x + box.width / 2;
|
|
newcy = box.y + box.height / 2;
|
|
|
|
// un-rotate the new center to the proper position
|
|
const dx = newcx - oldcx,
|
|
dy = newcy - oldcy,
|
|
r = Math.sqrt(dx * dx + dy * dy),
|
|
theta = Math.atan2(dy, dx) + angle;
|
|
|
|
newcx = r * Math.cos(theta) + oldcx;
|
|
newcy = r * Math.sin(theta) + oldcy;
|
|
|
|
const list = currentPath.pathSegList;
|
|
|
|
let i = list.numberOfItems;
|
|
while (i) {
|
|
i -= 1;
|
|
const seg = list.getItem(i),
|
|
type = seg.pathSegType;
|
|
if (type === 1) { continue; }
|
|
|
|
const rvals = getRotVals(seg.x, seg.y),
|
|
points = [rvals.x, rvals.y];
|
|
if (!isNullish(seg.x1) && !isNullish(seg.x2)) {
|
|
const cVals1 = getRotVals(seg.x1, seg.y1);
|
|
const cVals2 = getRotVals(seg.x2, seg.y2);
|
|
points.splice(points.length, 0, cVals1.x, cVals1.y, cVals2.x, cVals2.y);
|
|
}
|
|
replacePathSeg(type, i, points);
|
|
} // loop for each point
|
|
|
|
/* box = */ getBBox(currentPath);
|
|
// selectedBBoxes[0].x = box.x; selectedBBoxes[0].y = box.y;
|
|
// selectedBBoxes[0].width = box.width; selectedBBoxes[0].height = box.height;
|
|
|
|
// now we must set the new transform to be rotated around the new center
|
|
const Rnc = editorContext_.getSVGRoot().createSVGTransform(),
|
|
tlist = getTransformList(currentPath);
|
|
Rnc.setRotate((angle * 180.0 / Math.PI), newcx, newcy);
|
|
tlist.replaceItem(Rnc, 0);
|
|
};
|
|
|
|
// ====================================
|
|
// Public API starts here
|
|
|
|
/**
|
|
* @function module:path.clearData
|
|
* @returns {undefined}
|
|
*/
|
|
export const clearData = function () {
|
|
pathData = {};
|
|
};
|
|
|
|
// Making public for mocking
|
|
/**
|
|
* @function module:path.reorientGrads
|
|
* @param {Element} elem
|
|
* @param {SVGMatrix} m
|
|
* @returns {undefined}
|
|
*/
|
|
export const reorientGrads = function (elem, m) {
|
|
const bb = utilsGetBBox(elem);
|
|
for (let i = 0; i < 2; i++) {
|
|
const type = i === 0 ? 'fill' : 'stroke';
|
|
const attrVal = elem.getAttribute(type);
|
|
if (attrVal && attrVal.startsWith('url(')) {
|
|
const grad = getRefElem(attrVal);
|
|
if (grad.tagName === 'linearGradient') {
|
|
let x1 = grad.getAttribute('x1') || 0;
|
|
let y1 = grad.getAttribute('y1') || 0;
|
|
let x2 = grad.getAttribute('x2') || 1;
|
|
let y2 = grad.getAttribute('y2') || 0;
|
|
|
|
// Convert to USOU points
|
|
x1 = (bb.width * x1) + bb.x;
|
|
y1 = (bb.height * y1) + bb.y;
|
|
x2 = (bb.width * x2) + bb.x;
|
|
y2 = (bb.height * y2) + bb.y;
|
|
|
|
// Transform those points
|
|
const pt1 = transformPoint(x1, y1, m);
|
|
const pt2 = transformPoint(x2, y2, m);
|
|
|
|
// Convert back to BB points
|
|
const gCoords = {};
|
|
|
|
gCoords.x1 = (pt1.x - bb.x) / bb.width;
|
|
gCoords.y1 = (pt1.y - bb.y) / bb.height;
|
|
gCoords.x2 = (pt2.x - bb.x) / bb.width;
|
|
gCoords.y2 = (pt2.y - bb.y) / bb.height;
|
|
|
|
const newgrad = grad.cloneNode(true);
|
|
$(newgrad).attr(gCoords);
|
|
|
|
newgrad.id = editorContext_.getNextId();
|
|
findDefs().append(newgrad);
|
|
elem.setAttribute(type, 'url(#' + newgrad.id + ')');
|
|
}
|
|
}
|
|
}
|
|
};
|
|
|
|
/**
|
|
* This is how we map paths to our preferred relative segment types
|
|
* @name module:path.pathMap
|
|
* @type {GenericArray}
|
|
*/
|
|
const pathMap = [
|
|
0, 'z', 'M', 'm', 'L', 'l', 'C', 'c', 'Q', 'q', 'A', 'a',
|
|
'H', 'h', 'V', 'v', 'S', 's', 'T', 't'
|
|
];
|
|
|
|
/**
|
|
* Convert a path to one with only absolute or relative values.
|
|
* @todo move to pathActions.js
|
|
* @function module:path.convertPath
|
|
* @param {SVGPathElement} pth - the path to convert
|
|
* @param {boolean} toRel - true of convert to relative
|
|
* @returns {string}
|
|
*/
|
|
export const convertPath = function (pth, toRel) {
|
|
const {pathSegList} = pth;
|
|
const len = pathSegList.numberOfItems;
|
|
let curx = 0, cury = 0;
|
|
let d = '';
|
|
let lastM = null;
|
|
|
|
for (let i = 0; i < len; ++i) {
|
|
const seg = pathSegList.getItem(i);
|
|
// if these properties are not in the segment, set them to zero
|
|
let x = seg.x || 0,
|
|
y = seg.y || 0,
|
|
x1 = seg.x1 || 0,
|
|
y1 = seg.y1 || 0,
|
|
x2 = seg.x2 || 0,
|
|
y2 = seg.y2 || 0;
|
|
|
|
const type = seg.pathSegType;
|
|
let letter = pathMap[type]['to' + (toRel ? 'Lower' : 'Upper') + 'Case']();
|
|
|
|
switch (type) {
|
|
case 1: // z,Z closepath (Z/z)
|
|
d += 'z';
|
|
if (lastM && !toRel) {
|
|
curx = lastM[0];
|
|
cury = lastM[1];
|
|
}
|
|
break;
|
|
case 12: // absolute horizontal line (H)
|
|
x -= curx;
|
|
// Fallthrough
|
|
case 13: // relative horizontal line (h)
|
|
if (toRel) {
|
|
curx += x;
|
|
letter = 'l';
|
|
} else {
|
|
x += curx;
|
|
curx = x;
|
|
letter = 'L';
|
|
}
|
|
// Convert to "line" for easier editing
|
|
d += pathDSegment(letter, [[x, cury]]);
|
|
break;
|
|
case 14: // absolute vertical line (V)
|
|
y -= cury;
|
|
// Fallthrough
|
|
case 15: // relative vertical line (v)
|
|
if (toRel) {
|
|
cury += y;
|
|
letter = 'l';
|
|
} else {
|
|
y += cury;
|
|
cury = y;
|
|
letter = 'L';
|
|
}
|
|
// Convert to "line" for easier editing
|
|
d += pathDSegment(letter, [[curx, y]]);
|
|
break;
|
|
case 2: // absolute move (M)
|
|
case 4: // absolute line (L)
|
|
case 18: // absolute smooth quad (T)
|
|
x -= curx;
|
|
y -= cury;
|
|
// Fallthrough
|
|
case 5: // relative line (l)
|
|
case 3: // relative move (m)
|
|
case 19: // relative smooth quad (t)
|
|
if (toRel) {
|
|
curx += x;
|
|
cury += y;
|
|
} else {
|
|
x += curx;
|
|
y += cury;
|
|
curx = x;
|
|
cury = y;
|
|
}
|
|
if (type === 2 || type === 3) { lastM = [curx, cury]; }
|
|
|
|
d += pathDSegment(letter, [[x, y]]);
|
|
break;
|
|
case 6: // absolute cubic (C)
|
|
x -= curx; x1 -= curx; x2 -= curx;
|
|
y -= cury; y1 -= cury; y2 -= cury;
|
|
// Fallthrough
|
|
case 7: // relative cubic (c)
|
|
if (toRel) {
|
|
curx += x;
|
|
cury += y;
|
|
} else {
|
|
x += curx; x1 += curx; x2 += curx;
|
|
y += cury; y1 += cury; y2 += cury;
|
|
curx = x;
|
|
cury = y;
|
|
}
|
|
d += pathDSegment(letter, [[x1, y1], [x2, y2], [x, y]]);
|
|
break;
|
|
case 8: // absolute quad (Q)
|
|
x -= curx; x1 -= curx;
|
|
y -= cury; y1 -= cury;
|
|
// Fallthrough
|
|
case 9: // relative quad (q)
|
|
if (toRel) {
|
|
curx += x;
|
|
cury += y;
|
|
} else {
|
|
x += curx; x1 += curx;
|
|
y += cury; y1 += cury;
|
|
curx = x;
|
|
cury = y;
|
|
}
|
|
d += pathDSegment(letter, [[x1, y1], [x, y]]);
|
|
break;
|
|
case 10: // absolute elliptical arc (A)
|
|
x -= curx;
|
|
y -= cury;
|
|
// Fallthrough
|
|
case 11: // relative elliptical arc (a)
|
|
if (toRel) {
|
|
curx += x;
|
|
cury += y;
|
|
} else {
|
|
x += curx;
|
|
y += cury;
|
|
curx = x;
|
|
cury = y;
|
|
}
|
|
d += pathDSegment(letter, [[seg.r1, seg.r2]], [
|
|
seg.angle,
|
|
(seg.largeArcFlag ? 1 : 0),
|
|
(seg.sweepFlag ? 1 : 0)
|
|
], [x, y]);
|
|
break;
|
|
case 16: // absolute smooth cubic (S)
|
|
x -= curx; x2 -= curx;
|
|
y -= cury; y2 -= cury;
|
|
// Fallthrough
|
|
case 17: // relative smooth cubic (s)
|
|
if (toRel) {
|
|
curx += x;
|
|
cury += y;
|
|
} else {
|
|
x += curx; x2 += curx;
|
|
y += cury; y2 += cury;
|
|
curx = x;
|
|
cury = y;
|
|
}
|
|
d += pathDSegment(letter, [[x2, y2], [x, y]]);
|
|
break;
|
|
} // switch on path segment type
|
|
} // for each segment
|
|
return d;
|
|
};
|
|
|
|
/**
|
|
* TODO: refactor callers in `convertPath` to use `getPathDFromSegments` instead of this function.
|
|
* Legacy code refactored from `svgcanvas.pathActions.convertPath`.
|
|
* @param {string} letter - path segment command (letter in potentially either case from {@link module:path.pathMap}; see [SVGPathSeg#pathSegTypeAsLetter]{@link https://www.w3.org/TR/SVG/single-page.html#paths-__svg__SVGPathSeg__pathSegTypeAsLetter})
|
|
* @param {GenericArray<GenericArray<Integer>>} points - x,y points
|
|
* @param {GenericArray<GenericArray<Integer>>} [morePoints] - x,y points
|
|
* @param {Integer[]} [lastPoint] - x,y point
|
|
* @returns {string}
|
|
*/
|
|
function pathDSegment (letter, points, morePoints, lastPoint) {
|
|
$.each(points, function (i, pnt) {
|
|
points[i] = shortFloat(pnt);
|
|
});
|
|
let segment = letter + points.join(' ');
|
|
if (morePoints) {
|
|
segment += ' ' + morePoints.join(' ');
|
|
}
|
|
if (lastPoint) {
|
|
segment += ' ' + shortFloat(lastPoint);
|
|
}
|
|
return segment;
|
|
}
|
|
|
|
/**
|
|
* Group: Path edit functions
|
|
* Functions relating to editing path elements
|
|
* @namespace {PlainObject} pathActions
|
|
* @memberof module:path
|
|
*/
|
|
export const pathActions = (function () {
|
|
let subpath = false;
|
|
let newPoint, firstCtrl;
|
|
|
|
let currentPath = null;
|
|
let hasMoved = false;
|
|
// No `editorContext_` yet but should be ok as is `null` by default
|
|
// editorContext_.setDrawnPath(null);
|
|
|
|
/**
|
|
* This function converts a polyline (created by the fh_path tool) into
|
|
* a path element and coverts every three line segments into a single bezier
|
|
* curve in an attempt to smooth out the free-hand.
|
|
* @function smoothPolylineIntoPath
|
|
* @param {Element} element
|
|
* @returns {Element}
|
|
*/
|
|
const smoothPolylineIntoPath = function (element) {
|
|
let i;
|
|
const {points} = element;
|
|
const N = points.numberOfItems;
|
|
if (N >= 4) {
|
|
// loop through every 3 points and convert to a cubic bezier curve segment
|
|
//
|
|
// NOTE: this is cheating, it means that every 3 points has the potential to
|
|
// be a corner instead of treating each point in an equal manner. In general,
|
|
// this technique does not look that good.
|
|
//
|
|
// I am open to better ideas!
|
|
//
|
|
// Reading:
|
|
// - http://www.efg2.com/Lab/Graphics/Jean-YvesQueinecBezierCurves.htm
|
|
// - https://www.codeproject.com/KB/graphics/BezierSpline.aspx?msg=2956963
|
|
// - https://www.ian-ko.com/ET_GeoWizards/UserGuide/smooth.htm
|
|
// - https://www.cs.mtu.edu/~shene/COURSES/cs3621/NOTES/spline/Bezier/bezier-der.html
|
|
let curpos = points.getItem(0), prevCtlPt = null;
|
|
let d = [];
|
|
d.push(['M', curpos.x, ',', curpos.y, ' C'].join(''));
|
|
for (i = 1; i <= (N - 4); i += 3) {
|
|
let ct1 = points.getItem(i);
|
|
const ct2 = points.getItem(i + 1);
|
|
const end = points.getItem(i + 2);
|
|
|
|
// if the previous segment had a control point, we want to smooth out
|
|
// the control points on both sides
|
|
if (prevCtlPt) {
|
|
const newpts = smoothControlPoints(prevCtlPt, ct1, curpos);
|
|
if (newpts && newpts.length === 2) {
|
|
const prevArr = d[d.length - 1].split(',');
|
|
prevArr[2] = newpts[0].x;
|
|
prevArr[3] = newpts[0].y;
|
|
d[d.length - 1] = prevArr.join(',');
|
|
ct1 = newpts[1];
|
|
}
|
|
}
|
|
|
|
d.push([ct1.x, ct1.y, ct2.x, ct2.y, end.x, end.y].join(','));
|
|
|
|
curpos = end;
|
|
prevCtlPt = ct2;
|
|
}
|
|
// handle remaining line segments
|
|
d.push('L');
|
|
while (i < N) {
|
|
const pt = points.getItem(i);
|
|
d.push([pt.x, pt.y].join(','));
|
|
i++;
|
|
}
|
|
d = d.join(' ');
|
|
|
|
// create new path element
|
|
element = editorContext_.addSVGElementFromJson({
|
|
element: 'path',
|
|
curStyles: true,
|
|
attr: {
|
|
id: editorContext_.getId(),
|
|
d,
|
|
fill: 'none'
|
|
}
|
|
});
|
|
// No need to call "changed", as this is already done under mouseUp
|
|
}
|
|
return element;
|
|
};
|
|
|
|
return (/** @lends module:path.pathActions */ {
|
|
/**
|
|
* @param {MouseEvent} evt
|
|
* @param {Element} mouseTarget
|
|
* @param {Float} startX
|
|
* @param {Float} startY
|
|
* @returns {boolean|undefined}
|
|
*/
|
|
mouseDown (evt, mouseTarget, startX, startY) {
|
|
let id;
|
|
if (editorContext_.getCurrentMode() === 'path') {
|
|
let mouseX = startX; // Was this meant to work with the other `mouseX`? (was defined globally so adding `let` to at least avoid a global)
|
|
let mouseY = startY; // Was this meant to work with the other `mouseY`? (was defined globally so adding `let` to at least avoid a global)
|
|
|
|
const currentZoom = editorContext_.getCurrentZoom();
|
|
let x = mouseX / currentZoom,
|
|
y = mouseY / currentZoom,
|
|
stretchy = getElem('path_stretch_line');
|
|
newPoint = [x, y];
|
|
|
|
if (editorContext_.getGridSnapping()) {
|
|
x = snapToGrid(x);
|
|
y = snapToGrid(y);
|
|
mouseX = snapToGrid(mouseX);
|
|
mouseY = snapToGrid(mouseY);
|
|
}
|
|
|
|
if (!stretchy) {
|
|
stretchy = document.createElementNS(NS.SVG, 'path');
|
|
assignAttributes(stretchy, {
|
|
id: 'path_stretch_line',
|
|
stroke: '#22C',
|
|
'stroke-width': '0.5',
|
|
fill: 'none'
|
|
});
|
|
stretchy = getElem('selectorParentGroup').appendChild(stretchy);
|
|
}
|
|
stretchy.setAttribute('display', 'inline');
|
|
|
|
let keep = null;
|
|
let index;
|
|
// if pts array is empty, create path element with M at current point
|
|
const drawnPath = editorContext_.getDrawnPath();
|
|
if (!drawnPath) {
|
|
const dAttr = 'M' + x + ',' + y + ' '; // Was this meant to work with the other `dAttr`? (was defined globally so adding `var` to at least avoid a global)
|
|
/* drawnPath = */ editorContext_.setDrawnPath(editorContext_.addSVGElementFromJson({
|
|
element: 'path',
|
|
curStyles: true,
|
|
attr: {
|
|
d: dAttr,
|
|
id: editorContext_.getNextId(),
|
|
opacity: editorContext_.getOpacity() / 2
|
|
}
|
|
}));
|
|
// set stretchy line to first point
|
|
stretchy.setAttribute('d', ['M', mouseX, mouseY, mouseX, mouseY].join(' '));
|
|
index = subpath ? path.segs.length : 0;
|
|
addPointGrip(index, mouseX, mouseY);
|
|
} else {
|
|
// determine if we clicked on an existing point
|
|
const seglist = drawnPath.pathSegList;
|
|
let i = seglist.numberOfItems;
|
|
const FUZZ = 6 / currentZoom;
|
|
let clickOnPoint = false;
|
|
while (i) {
|
|
i--;
|
|
const item = seglist.getItem(i);
|
|
const px = item.x, py = item.y;
|
|
// found a matching point
|
|
if (x >= (px - FUZZ) && x <= (px + FUZZ) &&
|
|
y >= (py - FUZZ) && y <= (py + FUZZ)
|
|
) {
|
|
clickOnPoint = true;
|
|
break;
|
|
}
|
|
}
|
|
|
|
// get path element that we are in the process of creating
|
|
id = editorContext_.getId();
|
|
|
|
// Remove previous path object if previously created
|
|
removePath_(id);
|
|
|
|
const newpath = getElem(id);
|
|
let newseg;
|
|
let sSeg;
|
|
const len = seglist.numberOfItems;
|
|
// if we clicked on an existing point, then we are done this path, commit it
|
|
// (i, i+1) are the x,y that were clicked on
|
|
if (clickOnPoint) {
|
|
// if clicked on any other point but the first OR
|
|
// the first point was clicked on and there are less than 3 points
|
|
// then leave the path open
|
|
// otherwise, close the path
|
|
if (i <= 1 && len >= 2) {
|
|
// Create end segment
|
|
const absX = seglist.getItem(0).x;
|
|
const absY = seglist.getItem(0).y;
|
|
|
|
sSeg = stretchy.pathSegList.getItem(1);
|
|
if (sSeg.pathSegType === 4) {
|
|
newseg = drawnPath.createSVGPathSegLinetoAbs(absX, absY);
|
|
} else {
|
|
newseg = drawnPath.createSVGPathSegCurvetoCubicAbs(
|
|
absX,
|
|
absY,
|
|
sSeg.x1 / currentZoom,
|
|
sSeg.y1 / currentZoom,
|
|
absX,
|
|
absY
|
|
);
|
|
}
|
|
|
|
const endseg = drawnPath.createSVGPathSegClosePath();
|
|
seglist.appendItem(newseg);
|
|
seglist.appendItem(endseg);
|
|
} else if (len < 3) {
|
|
keep = false;
|
|
return keep;
|
|
}
|
|
$(stretchy).remove();
|
|
|
|
// This will signal to commit the path
|
|
// const element = newpath; // Other event handlers define own `element`, so this was probably not meant to interact with them or one which shares state (as there were none); I therefore adding a missing `var` to avoid a global
|
|
/* drawnPath = */ editorContext_.setDrawnPath(null);
|
|
editorContext_.setStarted(false);
|
|
|
|
if (subpath) {
|
|
if (path.matrix) {
|
|
editorContext_.remapElement(newpath, {}, path.matrix.inverse());
|
|
}
|
|
|
|
const newD = newpath.getAttribute('d');
|
|
const origD = $(path.elem).attr('d');
|
|
$(path.elem).attr('d', origD + newD);
|
|
$(newpath).remove();
|
|
if (path.matrix) {
|
|
recalcRotatedPath();
|
|
}
|
|
init();
|
|
pathActions.toEditMode(path.elem);
|
|
path.selectPt();
|
|
return false;
|
|
}
|
|
// else, create a new point, update path element
|
|
} else {
|
|
// Checks if current target or parents are #svgcontent
|
|
if (!$.contains(
|
|
editorContext_.getContainer(),
|
|
editorContext_.getMouseTarget(evt)
|
|
)) {
|
|
// Clicked outside canvas, so don't make point
|
|
// console.log('Clicked outside canvas');
|
|
return false;
|
|
}
|
|
|
|
const num = drawnPath.pathSegList.numberOfItems;
|
|
const last = drawnPath.pathSegList.getItem(num - 1);
|
|
const lastx = last.x, lasty = last.y;
|
|
|
|
if (evt.shiftKey) {
|
|
const xya = snapToAngle(lastx, lasty, x, y);
|
|
({x, y} = xya);
|
|
}
|
|
|
|
// Use the segment defined by stretchy
|
|
sSeg = stretchy.pathSegList.getItem(1);
|
|
if (sSeg.pathSegType === 4) {
|
|
newseg = drawnPath.createSVGPathSegLinetoAbs(
|
|
editorContext_.round(x),
|
|
editorContext_.round(y)
|
|
);
|
|
} else {
|
|
newseg = drawnPath.createSVGPathSegCurvetoCubicAbs(
|
|
editorContext_.round(x),
|
|
editorContext_.round(y),
|
|
sSeg.x1 / currentZoom,
|
|
sSeg.y1 / currentZoom,
|
|
sSeg.x2 / currentZoom,
|
|
sSeg.y2 / currentZoom
|
|
);
|
|
}
|
|
|
|
drawnPath.pathSegList.appendItem(newseg);
|
|
|
|
x *= currentZoom;
|
|
y *= currentZoom;
|
|
|
|
// set stretchy line to latest point
|
|
stretchy.setAttribute('d', ['M', x, y, x, y].join(' '));
|
|
index = num;
|
|
if (subpath) { index += path.segs.length; }
|
|
addPointGrip(index, x, y);
|
|
}
|
|
// keep = true;
|
|
}
|
|
|
|
return undefined;
|
|
}
|
|
|
|
// TODO: Make sure currentPath isn't null at this point
|
|
if (!path) { return undefined; }
|
|
|
|
path.storeD();
|
|
|
|
({id} = evt.target);
|
|
let curPt;
|
|
if (id.substr(0, 14) === 'pathpointgrip_') {
|
|
// Select this point
|
|
curPt = path.cur_pt = parseInt(id.substr(14));
|
|
path.dragging = [startX, startY];
|
|
const seg = path.segs[curPt];
|
|
|
|
// only clear selection if shift is not pressed (otherwise, add
|
|
// node to selection)
|
|
if (!evt.shiftKey) {
|
|
if (path.selected_pts.length <= 1 || !seg.selected) {
|
|
path.clearSelection();
|
|
}
|
|
path.addPtsToSelection(curPt);
|
|
} else if (seg.selected) {
|
|
path.removePtFromSelection(curPt);
|
|
} else {
|
|
path.addPtsToSelection(curPt);
|
|
}
|
|
} else if (id.startsWith('ctrlpointgrip_')) {
|
|
path.dragging = [startX, startY];
|
|
|
|
const parts = id.split('_')[1].split('c');
|
|
curPt = Number(parts[0]);
|
|
const ctrlNum = Number(parts[1]);
|
|
path.selectPt(curPt, ctrlNum);
|
|
}
|
|
|
|
// Start selection box
|
|
if (!path.dragging) {
|
|
let rubberBox = editorContext_.getRubberBox();
|
|
if (isNullish(rubberBox)) {
|
|
rubberBox = editorContext_.setRubberBox(
|
|
editorContext_.selectorManager.getRubberBandBox()
|
|
);
|
|
}
|
|
const currentZoom = editorContext_.getCurrentZoom();
|
|
assignAttributes(rubberBox, {
|
|
x: startX * currentZoom,
|
|
y: startY * currentZoom,
|
|
width: 0,
|
|
height: 0,
|
|
display: 'inline'
|
|
}, 100);
|
|
}
|
|
return undefined;
|
|
},
|
|
/**
|
|
* @param {Float} mouseX
|
|
* @param {Float} mouseY
|
|
* @returns {undefined}
|
|
*/
|
|
mouseMove (mouseX, mouseY) {
|
|
const currentZoom = editorContext_.getCurrentZoom();
|
|
hasMoved = true;
|
|
const drawnPath = editorContext_.getDrawnPath();
|
|
if (editorContext_.getCurrentMode() === 'path') {
|
|
if (!drawnPath) { return; }
|
|
const seglist = drawnPath.pathSegList;
|
|
const index = seglist.numberOfItems - 1;
|
|
|
|
if (newPoint) {
|
|
// First point
|
|
// if (!index) { return; }
|
|
|
|
// Set control points
|
|
const pointGrip1 = addCtrlGrip('1c1');
|
|
const pointGrip2 = addCtrlGrip('0c2');
|
|
|
|
// dragging pointGrip1
|
|
pointGrip1.setAttribute('cx', mouseX);
|
|
pointGrip1.setAttribute('cy', mouseY);
|
|
pointGrip1.setAttribute('display', 'inline');
|
|
|
|
const ptX = newPoint[0];
|
|
const ptY = newPoint[1];
|
|
|
|
// set curve
|
|
// const seg = seglist.getItem(index);
|
|
const curX = mouseX / currentZoom;
|
|
const curY = mouseY / currentZoom;
|
|
const altX = (ptX + (ptX - curX));
|
|
const altY = (ptY + (ptY - curY));
|
|
|
|
pointGrip2.setAttribute('cx', altX * currentZoom);
|
|
pointGrip2.setAttribute('cy', altY * currentZoom);
|
|
pointGrip2.setAttribute('display', 'inline');
|
|
|
|
const ctrlLine = getCtrlLine(1);
|
|
assignAttributes(ctrlLine, {
|
|
x1: mouseX,
|
|
y1: mouseY,
|
|
x2: altX * currentZoom,
|
|
y2: altY * currentZoom,
|
|
display: 'inline'
|
|
});
|
|
|
|
if (index === 0) {
|
|
firstCtrl = [mouseX, mouseY];
|
|
} else {
|
|
const last = seglist.getItem(index - 1);
|
|
let lastX = last.x;
|
|
let lastY = last.y;
|
|
|
|
if (last.pathSegType === 6) {
|
|
lastX += (lastX - last.x2);
|
|
lastY += (lastY - last.y2);
|
|
} else if (firstCtrl) {
|
|
lastX = firstCtrl[0] / currentZoom;
|
|
lastY = firstCtrl[1] / currentZoom;
|
|
}
|
|
replacePathSeg(6, index, [ptX, ptY, lastX, lastY, altX, altY], drawnPath);
|
|
}
|
|
} else {
|
|
const stretchy = getElem('path_stretch_line');
|
|
if (stretchy) {
|
|
const prev = seglist.getItem(index);
|
|
if (prev.pathSegType === 6) {
|
|
const prevX = prev.x + (prev.x - prev.x2);
|
|
const prevY = prev.y + (prev.y - prev.y2);
|
|
replacePathSeg(6, 1, [mouseX, mouseY, prevX * currentZoom, prevY * currentZoom, mouseX, mouseY], stretchy);
|
|
} else if (firstCtrl) {
|
|
replacePathSeg(6, 1, [mouseX, mouseY, firstCtrl[0], firstCtrl[1], mouseX, mouseY], stretchy);
|
|
} else {
|
|
replacePathSeg(4, 1, [mouseX, mouseY], stretchy);
|
|
}
|
|
}
|
|
}
|
|
return;
|
|
}
|
|
// if we are dragging a point, let's move it
|
|
if (path.dragging) {
|
|
const pt = getPointFromGrip({
|
|
x: path.dragging[0],
|
|
y: path.dragging[1]
|
|
}, path);
|
|
const mpt = getPointFromGrip({
|
|
x: mouseX,
|
|
y: mouseY
|
|
}, path);
|
|
const diffX = mpt.x - pt.x;
|
|
const diffY = mpt.y - pt.y;
|
|
path.dragging = [mouseX, mouseY];
|
|
|
|
if (path.dragctrl) {
|
|
path.moveCtrl(diffX, diffY);
|
|
} else {
|
|
path.movePts(diffX, diffY);
|
|
}
|
|
} else {
|
|
path.selected_pts = [];
|
|
path.eachSeg(function (i) {
|
|
const seg = this; // eslint-disable-line consistent-this
|
|
if (!seg.next && !seg.prev) { return; }
|
|
|
|
// const {item} = seg;
|
|
const rubberBox = editorContext_.getRubberBox();
|
|
const rbb = rubberBox.getBBox();
|
|
|
|
const pt = getGripPt(seg);
|
|
const ptBb = {
|
|
x: pt.x,
|
|
y: pt.y,
|
|
width: 0,
|
|
height: 0
|
|
};
|
|
|
|
const sel = rectsIntersect(rbb, ptBb);
|
|
|
|
this.select(sel);
|
|
// Note that addPtsToSelection is not being run
|
|
if (sel) { path.selected_pts.push(seg.index); }
|
|
});
|
|
}
|
|
},
|
|
/**
|
|
* @typedef module:path.keepElement
|
|
* @type {PlainObject}
|
|
* @property {boolean} keep
|
|
* @property {Element} element
|
|
*/
|
|
/**
|
|
* @param {Event} evt
|
|
* @param {Element} element
|
|
* @param {Float} mouseX
|
|
* @param {Float} mouseY
|
|
* @returns {module:path.keepElement|undefined}
|
|
*/
|
|
mouseUp (evt, element, mouseX, mouseY) {
|
|
const drawnPath = editorContext_.getDrawnPath();
|
|
// Create mode
|
|
if (editorContext_.getCurrentMode() === 'path') {
|
|
newPoint = null;
|
|
if (!drawnPath) {
|
|
element = getElem(editorContext_.getId());
|
|
editorContext_.setStarted(false);
|
|
firstCtrl = null;
|
|
}
|
|
|
|
return {
|
|
keep: true,
|
|
element
|
|
};
|
|
}
|
|
|
|
// Edit mode
|
|
const rubberBox = editorContext_.getRubberBox();
|
|
if (path.dragging) {
|
|
const lastPt = path.cur_pt;
|
|
|
|
path.dragging = false;
|
|
path.dragctrl = false;
|
|
path.update();
|
|
|
|
if (hasMoved) {
|
|
path.endChanges('Move path point(s)');
|
|
}
|
|
|
|
if (!evt.shiftKey && !hasMoved) {
|
|
path.selectPt(lastPt);
|
|
}
|
|
} else if (rubberBox && rubberBox.getAttribute('display') !== 'none') {
|
|
// Done with multi-node-select
|
|
rubberBox.setAttribute('display', 'none');
|
|
|
|
if (rubberBox.getAttribute('width') <= 2 && rubberBox.getAttribute('height') <= 2) {
|
|
pathActions.toSelectMode(evt.target);
|
|
}
|
|
|
|
// else, move back to select mode
|
|
} else {
|
|
pathActions.toSelectMode(evt.target);
|
|
}
|
|
hasMoved = false;
|
|
return undefined;
|
|
},
|
|
/**
|
|
* @param {Element} element
|
|
* @returns {undefined}
|
|
*/
|
|
toEditMode (element) {
|
|
path = getPath_(element);
|
|
editorContext_.setCurrentMode('pathedit');
|
|
editorContext_.clearSelection();
|
|
path.show(true).update();
|
|
path.oldbbox = utilsGetBBox(path.elem);
|
|
subpath = false;
|
|
},
|
|
/**
|
|
* @param {Element} elem
|
|
* @fires module:svgcanvas.SvgCanvas#event:selected
|
|
* @returns {undefined}
|
|
*/
|
|
toSelectMode (elem) {
|
|
const selPath = (elem === path.elem);
|
|
editorContext_.setCurrentMode('select');
|
|
path.show(false);
|
|
currentPath = false;
|
|
editorContext_.clearSelection();
|
|
|
|
if (path.matrix) {
|
|
// Rotated, so may need to re-calculate the center
|
|
recalcRotatedPath();
|
|
}
|
|
|
|
if (selPath) {
|
|
editorContext_.call('selected', [elem]);
|
|
editorContext_.addToSelection([elem], true);
|
|
}
|
|
},
|
|
/**
|
|
* @param {boolean} on
|
|
* @returns {undefined}
|
|
*/
|
|
addSubPath (on) {
|
|
if (on) {
|
|
// Internally we go into "path" mode, but in the UI it will
|
|
// still appear as if in "pathedit" mode.
|
|
editorContext_.setCurrentMode('path');
|
|
subpath = true;
|
|
} else {
|
|
pathActions.clear(true);
|
|
pathActions.toEditMode(path.elem);
|
|
}
|
|
},
|
|
/**
|
|
* @param {Element} target
|
|
* @returns {undefined}
|
|
*/
|
|
select (target) {
|
|
if (currentPath === target) {
|
|
pathActions.toEditMode(target);
|
|
editorContext_.setCurrentMode('pathedit');
|
|
// going into pathedit mode
|
|
} else {
|
|
currentPath = target;
|
|
}
|
|
},
|
|
/**
|
|
* @fires module:svgcanvas.SvgCanvas#event:changed
|
|
* @returns {undefined}
|
|
*/
|
|
reorient () {
|
|
const elem = editorContext_.getSelectedElements()[0];
|
|
if (!elem) { return; }
|
|
const angl = getRotationAngle(elem);
|
|
if (angl === 0) { return; }
|
|
|
|
const batchCmd = new BatchCommand('Reorient path');
|
|
const changes = {
|
|
d: elem.getAttribute('d'),
|
|
transform: elem.getAttribute('transform')
|
|
};
|
|
batchCmd.addSubCommand(new ChangeElementCommand(elem, changes));
|
|
editorContext_.clearSelection();
|
|
this.resetOrientation(elem);
|
|
|
|
editorContext_.addCommandToHistory(batchCmd);
|
|
|
|
// Set matrix to null
|
|
getPath_(elem).show(false).matrix = null;
|
|
|
|
this.clear();
|
|
|
|
editorContext_.addToSelection([elem], true);
|
|
editorContext_.call('changed', editorContext_.getSelectedElements());
|
|
},
|
|
|
|
/**
|
|
* @param {boolean} remove Not in use
|
|
* @returns {undefined}
|
|
*/
|
|
clear (remove) {
|
|
const drawnPath = editorContext_.getDrawnPath();
|
|
currentPath = null;
|
|
if (drawnPath) {
|
|
const elem = getElem(editorContext_.getId());
|
|
$(getElem('path_stretch_line')).remove();
|
|
$(elem).remove();
|
|
$(getElem('pathpointgrip_container')).find('*').attr('display', 'none');
|
|
firstCtrl = null;
|
|
editorContext_.setDrawnPath(null);
|
|
editorContext_.setStarted(false);
|
|
} else if (editorContext_.getCurrentMode() === 'pathedit') {
|
|
this.toSelectMode();
|
|
}
|
|
if (path) { path.init().show(false); }
|
|
},
|
|
/**
|
|
* @param {?(Element|SVGPathElement)} pth
|
|
* @returns {false|undefined}
|
|
*/
|
|
resetOrientation (pth) {
|
|
if (isNullish(pth) || pth.nodeName !== 'path') { return false; }
|
|
const tlist = getTransformList(pth);
|
|
const m = transformListToTransform(tlist).matrix;
|
|
tlist.clear();
|
|
pth.removeAttribute('transform');
|
|
const segList = pth.pathSegList;
|
|
|
|
// Opera/win/non-EN throws an error here.
|
|
// TODO: Find out why!
|
|
// Presumed fixed in Opera 10.5, so commented out for now
|
|
|
|
// try {
|
|
const len = segList.numberOfItems;
|
|
// } catch(err) {
|
|
// const fixed_d = pathActions.convertPath(pth);
|
|
// pth.setAttribute('d', fixed_d);
|
|
// segList = pth.pathSegList;
|
|
// const len = segList.numberOfItems;
|
|
// }
|
|
// let lastX, lastY;
|
|
for (let i = 0; i < len; ++i) {
|
|
const seg = segList.getItem(i);
|
|
const type = seg.pathSegType;
|
|
if (type === 1) { continue; }
|
|
const pts = [];
|
|
$.each(['', 1, 2], function (j, n) {
|
|
const x = seg['x' + n], y = seg['y' + n];
|
|
if (x !== undefined && y !== undefined) {
|
|
const pt = transformPoint(x, y, m);
|
|
pts.splice(pts.length, 0, pt.x, pt.y);
|
|
}
|
|
});
|
|
replacePathSeg(type, i, pts, pth);
|
|
}
|
|
|
|
reorientGrads(pth, m);
|
|
return undefined;
|
|
},
|
|
/**
|
|
* @returns {undefined}
|
|
*/
|
|
zoomChange () {
|
|
if (editorContext_.getCurrentMode() === 'pathedit') {
|
|
path.update();
|
|
}
|
|
},
|
|
/**
|
|
* @typedef {PlainObject} module:path.NodePoint
|
|
* @property {Float} x
|
|
* @property {Float} y
|
|
* @property {Integer} type
|
|
*/
|
|
/**
|
|
* @returns {module:path.NodePoint}
|
|
*/
|
|
getNodePoint () {
|
|
const selPt = path.selected_pts.length ? path.selected_pts[0] : 1;
|
|
|
|
const seg = path.segs[selPt];
|
|
return {
|
|
x: seg.item.x,
|
|
y: seg.item.y,
|
|
type: seg.type
|
|
};
|
|
},
|
|
/**
|
|
* @param {boolean} linkPoints
|
|
* @returns {undefined}
|
|
*/
|
|
linkControlPoints (linkPoints) {
|
|
setLinkControlPoints(linkPoints);
|
|
},
|
|
/**
|
|
* @returns {undefined}
|
|
*/
|
|
clonePathNode () {
|
|
path.storeD();
|
|
|
|
const selPts = path.selected_pts;
|
|
// const {segs} = path;
|
|
|
|
let i = selPts.length;
|
|
const nums = [];
|
|
|
|
while (i--) {
|
|
const pt = selPts[i];
|
|
path.addSeg(pt);
|
|
|
|
nums.push(pt + i);
|
|
nums.push(pt + i + 1);
|
|
}
|
|
path.init().addPtsToSelection(nums);
|
|
|
|
path.endChanges('Clone path node(s)');
|
|
},
|
|
/**
|
|
* @returns {undefined}
|
|
*/
|
|
opencloseSubPath () {
|
|
const selPts = path.selected_pts;
|
|
// Only allow one selected node for now
|
|
if (selPts.length !== 1) { return; }
|
|
|
|
const {elem} = path;
|
|
const list = elem.pathSegList;
|
|
|
|
// const len = list.numberOfItems;
|
|
|
|
const index = selPts[0];
|
|
|
|
let openPt = null;
|
|
let startItem = null;
|
|
|
|
// Check if subpath is already open
|
|
path.eachSeg(function (i) {
|
|
if (this.type === 2 && i <= index) {
|
|
startItem = this.item;
|
|
}
|
|
if (i <= index) { return true; }
|
|
if (this.type === 2) {
|
|
// Found M first, so open
|
|
openPt = i;
|
|
return false;
|
|
}
|
|
if (this.type === 1) {
|
|
// Found Z first, so closed
|
|
openPt = false;
|
|
return false;
|
|
}
|
|
return true;
|
|
});
|
|
|
|
if (isNullish(openPt)) {
|
|
// Single path, so close last seg
|
|
openPt = path.segs.length - 1;
|
|
}
|
|
|
|
if (openPt !== false) {
|
|
// Close this path
|
|
|
|
// Create a line going to the previous "M"
|
|
const newseg = elem.createSVGPathSegLinetoAbs(startItem.x, startItem.y);
|
|
|
|
const closer = elem.createSVGPathSegClosePath();
|
|
if (openPt === path.segs.length - 1) {
|
|
list.appendItem(newseg);
|
|
list.appendItem(closer);
|
|
} else {
|
|
insertItemBefore(elem, closer, openPt);
|
|
insertItemBefore(elem, newseg, openPt);
|
|
}
|
|
|
|
path.init().selectPt(openPt + 1);
|
|
return;
|
|
}
|
|
|
|
// M 1,1 L 2,2 L 3,3 L 1,1 z // open at 2,2
|
|
// M 2,2 L 3,3 L 1,1
|
|
|
|
// M 1,1 L 2,2 L 1,1 z M 4,4 L 5,5 L6,6 L 5,5 z
|
|
// M 1,1 L 2,2 L 1,1 z [M 4,4] L 5,5 L(M)6,6 L 5,5 z
|
|
|
|
const seg = path.segs[index];
|
|
|
|
if (seg.mate) {
|
|
list.removeItem(index); // Removes last "L"
|
|
list.removeItem(index); // Removes the "Z"
|
|
path.init().selectPt(index - 1);
|
|
return;
|
|
}
|
|
|
|
let lastM, zSeg;
|
|
|
|
// Find this sub-path's closing point and remove
|
|
for (let i = 0; i < list.numberOfItems; i++) {
|
|
const item = list.getItem(i);
|
|
|
|
if (item.pathSegType === 2) {
|
|
// Find the preceding M
|
|
lastM = i;
|
|
} else if (i === index) {
|
|
// Remove it
|
|
list.removeItem(lastM);
|
|
// index--;
|
|
} else if (item.pathSegType === 1 && index < i) {
|
|
// Remove the closing seg of this subpath
|
|
zSeg = i - 1;
|
|
list.removeItem(i);
|
|
break;
|
|
}
|
|
}
|
|
|
|
let num = (index - lastM) - 1;
|
|
|
|
while (num--) {
|
|
insertItemBefore(elem, list.getItem(lastM), zSeg);
|
|
}
|
|
|
|
const pt = list.getItem(lastM);
|
|
|
|
// Make this point the new "M"
|
|
replacePathSeg(2, lastM, [pt.x, pt.y]);
|
|
|
|
// i = index; // i is local here, so has no effect; what was the intent for this?
|
|
|
|
path.init().selectPt(0);
|
|
},
|
|
/**
|
|
* @returns {undefined}
|
|
*/
|
|
deletePathNode () {
|
|
if (!pathActions.canDeleteNodes) { return; }
|
|
path.storeD();
|
|
|
|
const selPts = path.selected_pts;
|
|
|
|
let i = selPts.length;
|
|
while (i--) {
|
|
const pt = selPts[i];
|
|
path.deleteSeg(pt);
|
|
}
|
|
|
|
// Cleanup
|
|
const cleanup = function () {
|
|
const segList = path.elem.pathSegList;
|
|
let len = segList.numberOfItems;
|
|
|
|
const remItems = function (pos, count) {
|
|
while (count--) {
|
|
segList.removeItem(pos);
|
|
}
|
|
};
|
|
|
|
if (len <= 1) { return true; }
|
|
|
|
while (len--) {
|
|
const item = segList.getItem(len);
|
|
if (item.pathSegType === 1) {
|
|
const prev = segList.getItem(len - 1);
|
|
const nprev = segList.getItem(len - 2);
|
|
if (prev.pathSegType === 2) {
|
|
remItems(len - 1, 2);
|
|
cleanup();
|
|
break;
|
|
} else if (nprev.pathSegType === 2) {
|
|
remItems(len - 2, 3);
|
|
cleanup();
|
|
break;
|
|
}
|
|
} else if (item.pathSegType === 2) {
|
|
if (len > 0) {
|
|
const prevType = segList.getItem(len - 1).pathSegType;
|
|
// Path has M M
|
|
if (prevType === 2) {
|
|
remItems(len - 1, 1);
|
|
cleanup();
|
|
break;
|
|
// Entire path ends with Z M
|
|
} else if (prevType === 1 && segList.numberOfItems - 1 === len) {
|
|
remItems(len, 1);
|
|
cleanup();
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
return false;
|
|
};
|
|
|
|
cleanup();
|
|
|
|
// Completely delete a path with 1 or 0 segments
|
|
if (path.elem.pathSegList.numberOfItems <= 1) {
|
|
pathActions.toSelectMode(path.elem);
|
|
editorContext_.canvas.deleteSelectedElements();
|
|
return;
|
|
}
|
|
|
|
path.init();
|
|
path.clearSelection();
|
|
|
|
// TODO: Find right way to select point now
|
|
// path.selectPt(selPt);
|
|
if (window.opera) { // Opera repaints incorrectly
|
|
const cp = $(path.elem);
|
|
cp.attr('d', cp.attr('d'));
|
|
}
|
|
path.endChanges('Delete path node(s)');
|
|
},
|
|
// Can't seem to use `@borrows` here, so using `@see`
|
|
/**
|
|
* Smooth polyline into path
|
|
* @function module:path.pathActions.smoothPolylineIntoPath
|
|
* @see module:path~smoothPolylineIntoPath
|
|
*/
|
|
smoothPolylineIntoPath,
|
|
/**
|
|
* @param {?Integer} v See {@link https://www.w3.org/TR/SVG/single-page.html#paths-InterfaceSVGPathSeg}
|
|
* @returns {undefined}
|
|
*/
|
|
setSegType (v) {
|
|
path.setSegType(v);
|
|
},
|
|
/**
|
|
* @param {string} attr
|
|
* @param {Float} newValue
|
|
* @returns {undefined}
|
|
*/
|
|
moveNode (attr, newValue) {
|
|
const selPts = path.selected_pts;
|
|
if (!selPts.length) { return; }
|
|
|
|
path.storeD();
|
|
|
|
// Get first selected point
|
|
const seg = path.segs[selPts[0]];
|
|
const diff = {x: 0, y: 0};
|
|
diff[attr] = newValue - seg.item[attr];
|
|
|
|
seg.move(diff.x, diff.y);
|
|
path.endChanges('Move path point');
|
|
},
|
|
/**
|
|
* @param {Element} elem
|
|
* @returns {undefined}
|
|
*/
|
|
fixEnd (elem) {
|
|
// Adds an extra segment if the last seg before a Z doesn't end
|
|
// at its M point
|
|
// M0,0 L0,100 L100,100 z
|
|
const segList = elem.pathSegList;
|
|
const len = segList.numberOfItems;
|
|
let lastM;
|
|
for (let i = 0; i < len; ++i) {
|
|
const item = segList.getItem(i);
|
|
if (item.pathSegType === 2) {
|
|
lastM = item;
|
|
}
|
|
|
|
if (item.pathSegType === 1) {
|
|
const prev = segList.getItem(i - 1);
|
|
if (prev.x !== lastM.x || prev.y !== lastM.y) {
|
|
// Add an L segment here
|
|
const newseg = elem.createSVGPathSegLinetoAbs(lastM.x, lastM.y);
|
|
insertItemBefore(elem, newseg, i);
|
|
// Can this be done better?
|
|
pathActions.fixEnd(elem);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
if (isWebkit()) { editorContext_.resetD(elem); }
|
|
},
|
|
// Can't seem to use `@borrows` here, so using `@see`
|
|
/**
|
|
* Convert a path to one with only absolute or relative values
|
|
* @function module:path.pathActions.convertPath
|
|
* @see module:path.convertPath
|
|
*/
|
|
convertPath
|
|
});
|
|
})();
|
|
// end pathActions
|