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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 | 1× 1× 1× 1× 151× 151× 151× 151× 228× 228× 228× 7× 151× 127× 127× 1× 1× 1× 1× 7× 7× 7× 1× 317× 317× 1× 317× 1× | import { bind, forEach } from 'min-dash'; var HANDLE_OFFSET = -2, HANDLE_SIZE = 5, HANDLE_HIT_SIZE = 20; var CLS_RESIZER = 'djs-resizer'; import { append as svgAppend, attr as svgAttr, classes as svgClasses, clear as svgClear, create as svgCreate } from 'tiny-svg'; import { event as domEvent } from 'min-dom'; import { isPrimaryButton } from '../../util/Mouse'; import { asTRBL } from '../../layout/LayoutUtil'; import { transform } from '../../util/SvgTransformUtil'; /** * This component is responsible for adding resize handles. * * @param {EventBus} eventBus * @param {Canvas} canvas * @param {Selection} selection * @param {Resize} resize */ export default function ResizeHandles(eventBus, canvas, selection, resize) { this._resize = resize; this._canvas = canvas; var self = this; eventBus.on('selection.changed', function(e) { var newSelection = e.newSelection; // remove old selection markers self.removeResizers(); // add new selection markers ONLY if single selection if (newSelection.length === 1) { forEach(newSelection, bind(self.addResizer, self)); } }); eventBus.on('shape.changed', function(e) { var shape = e.element; Iif (selection.isSelected(shape)) { self.removeResizers(); self.addResizer(shape); } }); } ResizeHandles.prototype.makeDraggable = function(element, gfx, direction) { var resize = this._resize; function startResize(event) { // only trigger on left mouse button if (isPrimaryButton(event)) { resize.activate(event, element, direction); } } domEvent.bind(gfx, 'mousedown', startResize); domEvent.bind(gfx, 'touchstart', startResize); }; ResizeHandles.prototype._createResizer = function(element, x, y, rotation, direction) { var resizersParent = this._getResizersParent(); var group = svgCreate('g'); svgClasses(group).add(CLS_RESIZER); svgClasses(group).add(CLS_RESIZER + '-' + element.id); svgClasses(group).add(CLS_RESIZER + '-' + direction); svgAppend(resizersParent, group); var origin = -HANDLE_SIZE + HANDLE_OFFSET; // Create four drag indicators on the outline var visual = svgCreate('rect'); svgAttr(visual, { x: origin, y: origin, width: HANDLE_SIZE, height: HANDLE_SIZE }); svgClasses(visual).add(CLS_RESIZER + '-visual'); svgAppend(group, visual); var hit = svgCreate('rect'); svgAttr(hit, { x: origin, y: origin, width: HANDLE_HIT_SIZE, height: HANDLE_HIT_SIZE }); svgClasses(hit).add(CLS_RESIZER + '-hit'); svgAppend(group, hit); transform(group, x, y, rotation); return group; }; ResizeHandles.prototype.createResizer = function(element, direction) { var resizer; var trbl = asTRBL(element); if (direction === 'nw') { resizer = this._createResizer(element, trbl.left, trbl.top, 0, direction); } else if (direction === 'ne') { resizer = this._createResizer(element, trbl.right, trbl.top, 90, direction); } else if (direction === 'se') { resizer = this._createResizer(element, trbl.right, trbl.bottom, 180, direction); } else { resizer = this._createResizer(element, trbl.left, trbl.bottom, 270, direction); } this.makeDraggable(element, resizer, direction); }; // resize handles implementation /////////////////////////////// /** * Add resizers for a given element. * * @param {djs.model.Shape} shape */ ResizeHandles.prototype.addResizer = function(shape) { var resize = this._resize; Eif (!resize.canResize({ shape: shape })) { return; } this.createResizer(shape, 'nw'); this.createResizer(shape, 'ne'); this.createResizer(shape, 'se'); this.createResizer(shape, 'sw'); }; /** * Remove all resizers */ ResizeHandles.prototype.removeResizers = function() { var resizersParent = this._getResizersParent(); svgClear(resizersParent); }; ResizeHandles.prototype._getResizersParent = function() { return this._canvas.getLayer('resizers'); }; ResizeHandles.$inject = [ 'eventBus', 'canvas', 'selection', 'resize' ]; |