1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 | 1× 1× 61× 61× 61× 61× 61× 61× 61× 61× 543× 543× 543× 543× 543× 543× 543× 543× 543× 543× 543× 543× 114× 543× 294× 294× 294× 294× 294× 294× 294× 294× 294× 294× 294× 294× 294× 294× 294× 294× 294× 294× 294× 294× 294× 294× 294× 294× 294× 294× 300× 294× 294× 294× | import { toPoint } from '../../util/Event'; import { getMidPoint, pointsAligned } from '../../util/Geometry'; import { append as svgAppend, attr as svgAttr, classes as svgClasses, create as svgCreate } from 'tiny-svg'; import { rotate, translate } from '../../util/SvgTransformUtil'; import { getApproxIntersection } from '../../util/LineIntersection'; export var BENDPOINT_CLS = 'djs-bendpoint'; export var SEGMENT_DRAGGER_CLS = 'djs-segment-dragger'; export function toCanvasCoordinates(canvas, event) { var position = toPoint(event), clientRect = canvas._container.getBoundingClientRect(), offset; // canvas relative position offset = { x: clientRect.left, y: clientRect.top }; // update actual event payload with canvas relative measures var viewbox = canvas.viewbox(); return { x: viewbox.x + (position.x - offset.x) / viewbox.scale, y: viewbox.y + (position.y - offset.y) / viewbox.scale }; } export function getConnectionIntersection(canvas, waypoints, event) { var localPosition = toCanvasCoordinates(canvas, event), intersection = getApproxIntersection(waypoints, localPosition); return intersection; } export function addBendpoint(parentGfx, cls) { var groupGfx = svgCreate('g'); svgClasses(groupGfx).add(BENDPOINT_CLS); svgAppend(parentGfx, groupGfx); var visual = svgCreate('circle'); svgAttr(visual, { cx: 0, cy: 0, r: 4 }); svgClasses(visual).add('djs-visual'); svgAppend(groupGfx, visual); var hit = svgCreate('circle'); svgAttr(hit, { cx: 0, cy: 0, r: 10 }); svgClasses(hit).add('djs-hit'); svgAppend(groupGfx, hit); if (cls) { svgClasses(groupGfx).add(cls); } return groupGfx; } function createParallelDragger(parentGfx, segmentStart, segmentEnd, alignment) { var draggerGfx = svgCreate('g'); svgAppend(parentGfx, draggerGfx); var width = 14, height = 3, padding = 6, hitWidth = calculateHitWidth(segmentStart, segmentEnd, alignment, padding), hitHeight = height + padding; var visual = svgCreate('rect'); svgAttr(visual, { x: -width / 2, y: -height / 2, width: width, height: height }); svgClasses(visual).add('djs-visual'); svgAppend(draggerGfx, visual); var hit = svgCreate('rect'); svgAttr(hit, { x: -hitWidth / 2, y: -hitHeight / 2, width: hitWidth, height: hitHeight }); svgClasses(hit).add('djs-hit'); svgAppend(draggerGfx, hit); rotate(draggerGfx, alignment === 'v' ? 90 : 0, 0, 0); return draggerGfx; } export function addSegmentDragger(parentGfx, segmentStart, segmentEnd) { var groupGfx = svgCreate('g'), mid = getMidPoint(segmentStart, segmentEnd), alignment = pointsAligned(segmentStart, segmentEnd); svgAppend(parentGfx, groupGfx); createParallelDragger(groupGfx, segmentStart, segmentEnd, alignment); svgClasses(groupGfx).add(SEGMENT_DRAGGER_CLS); svgClasses(groupGfx).add(alignment === 'h' ? 'horizontal' : 'vertical'); translate(groupGfx, mid.x, mid.y); return groupGfx; } /** * Calculates region for segment move which is 2/3 of the full segment length * @param {Number} segmentLength * * @return {Number} */ export function calculateSegmentMoveRegion(segmentLength) { return Math.abs(Math.round(segmentLength * 2 / 3)); } // helper ////////// function calculateHitWidth(segmentStart, segmentEnd, alignment) { var segmentLengthXAxis = segmentEnd.x - segmentStart.x, segmentLengthYAxis = segmentEnd.y - segmentStart.y; return alignment === 'h' ? calculateSegmentMoveRegion(segmentLengthXAxis) : calculateSegmentMoveRegion(segmentLengthYAxis); } |