1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 | 4× 6× 8× 1× 4× 3× 59× 1× 1× 6× 6× 6× 6× 3× 3× 6× 1× 12× 1× 6× 6× 6× 6× 6× 6× 2× 6× 2× 4× 2× 2× 2× 2× 7× 7× 7× 2× 7× 7× 2× 2× 2× 7× 2× 2× 6× 1× 6× 6× 21× 6× 6× 6× 6× | import { filter, forEach, sortBy } from 'min-dash'; function last(arr) { return arr && arr[arr.length - 1]; } function sortTopOrMiddle(element) { return element.y; } function sortLeftOrCenter(element) { return element.x; } /** * Sorting functions for different types of alignment * * @type {Object} * * @return {Function} */ var ALIGNMENT_SORTING = { left: sortLeftOrCenter, center: sortLeftOrCenter, right: function(element) { return element.x + element.width; }, top: sortTopOrMiddle, middle: sortTopOrMiddle, bottom: function(element) { return element.y + element.height; } }; export default function AlignElements(modeling) { this._modeling = modeling; } AlignElements.$inject = [ 'modeling' ]; /** * Get the relevant "axis" and "dimension" related to the current type of alignment * * @param {String} type left|right|center|top|bottom|middle * * @return {Object} { axis, dimension } */ AlignElements.prototype._getOrientationDetails = function(type) { var vertical = [ 'top', 'bottom', 'middle' ], axis = 'x', dimension = 'width'; if (vertical.indexOf(type) !== -1) { axis = 'y'; dimension = 'height'; } return { axis: axis, dimension: dimension }; }; AlignElements.prototype._isType = function(type, types) { return types.indexOf(type) !== -1; }; /** * Get a point on the relevant axis where elements should align to * * @param {String} type left|right|center|top|bottom|middle * @param {Array} sortedElements * * @return {Object} */ AlignElements.prototype._alignmentPosition = function(type, sortedElements) { var orientation = this._getOrientationDetails(type), axis = orientation.axis, dimension = orientation.dimension, alignment = {}, centers = {}, hasSharedCenters = false, centeredElements, firstElement, lastElement; function getMiddleOrTop(first, last) { return Math.round((first[axis] + last[axis] + last[dimension]) / 2); } if (this._isType(type, [ 'left', 'top' ])) { alignment[type] = sortedElements[0][axis]; } else if (this._isType(type, [ 'right', 'bottom' ])) { lastElement = last(sortedElements); alignment[type] = lastElement[axis] + lastElement[dimension]; } else Eif (this._isType(type, [ 'center', 'middle' ])) { // check if there is a center shared by more than one shape // if not, just take the middle of the range forEach(sortedElements, function(element) { var center = element[axis] + Math.round(element[dimension] / 2); Iif (centers[center]) { centers[center].elements.push(element); } else { centers[center] = { elements: [ element ], center: center }; } }); centeredElements = sortBy(centers, function(center) { Iif (center.elements.length > 1) { hasSharedCenters = true; } return center.elements.length; }); Iif (hasSharedCenters) { alignment[type] = last(centeredElements).center; return alignment; } firstElement = sortedElements[0]; sortedElements = sortBy(sortedElements, function(element) { return element[axis] + element[dimension]; }); lastElement = last(sortedElements); alignment[type] = getMiddleOrTop(firstElement, lastElement); } return alignment; }; /** * Executes the alignment of a selection of elements * * @param {Array} elements [description] * @param {String} type left|right|center|top|bottom|middle */ AlignElements.prototype.trigger = function(elements, type) { var modeling = this._modeling; var filteredElements = filter(elements, function(element) { return !(element.waypoints || element.host || element.labelTarget); }); var sortFn = ALIGNMENT_SORTING[type]; var sortedElements = sortBy(filteredElements, sortFn); var alignment = this._alignmentPosition(type, sortedElements); modeling.alignElements(sortedElements, alignment); }; |