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 | 1× 1× 8× 8× 8× 8× 8× 8× 3× 3× 2× 2× 3× 2× 2× 2× 2× 3× 8× 8× 1× 1× 8× 1× 1× 1× 1× 1× 1× 3× 3× 1× 2× 1× 1× 6× 6× 1× 5× 5× | import { hasPrimaryModifier } from '../../util/Mouse'; import { isKey } from '../../features/keyboard/KeyboardUtil'; var HIGH_PRIORITY = 1500; var HAND_CURSOR = 'grab'; export default function HandTool(eventBus, canvas, dragging, injector, toolManager) { this._dragging = dragging; var self = this, keyboard = injector.get('keyboard', false); toolManager.registerTool('hand', { tool: 'hand', dragging: 'hand.move' }); eventBus.on('element.mousedown', HIGH_PRIORITY, function(event) { if (hasPrimaryModifier(event)) { this.activateMove(event.originalEvent); return false; } }, this); keyboard && keyboard.addListener(HIGH_PRIORITY, function(e) { Iif (!isSpace(e.keyEvent)) { return; } Iif (self.isActive()) { return; } function activateMove(event) { self.activateMove(event); window.removeEventListener('mousemove', activateMove); } window.addEventListener('mousemove', activateMove); function deactivateMove(e) { Iif (!isSpace(e.keyEvent)) { return; } window.removeEventListener('mousemove', activateMove); keyboard.removeListener(deactivateMove, 'keyboard.keyup'); dragging.cancel(); } keyboard.addListener(HIGH_PRIORITY, deactivateMove, 'keyboard.keyup'); }, 'keyboard.keydown'); eventBus.on('hand.end', function(event) { var target = event.originalEvent.target; // only reactive on diagram click // on some occasions, event.hover is not set and we have to check if the target is an svg if (!event.hover && !(target instanceof SVGElement)) { return false; } eventBus.once('hand.ended', function() { this.activateMove(event.originalEvent, { reactivate: true }); }, this); }, this); eventBus.on('hand.move.move', function(event) { var scale = canvas.viewbox().scale; canvas.scroll({ dx: event.dx * scale, dy: event.dy * scale }); }); eventBus.on('hand.move.end', function(event) { var context = event.context, reactivate = context.reactivate; // Don't reactivate if the user is using the keyboard keybinding Iif (!hasPrimaryModifier(event) && reactivate) { eventBus.once('hand.move.ended', function(event) { this.activateHand(event.originalEvent, true, true); }, this); } return false; }, this); } HandTool.$inject = [ 'eventBus', 'canvas', 'dragging', 'injector', 'toolManager' ]; HandTool.prototype.activateMove = function(event, autoActivate, context) { Iif (typeof autoActivate === 'object') { context = autoActivate; autoActivate = false; } this._dragging.init(event, 'hand.move', { autoActivate: autoActivate, cursor: HAND_CURSOR, data: { context: context || {} } }); }; HandTool.prototype.activateHand = function(event, autoActivate, reactivate) { this._dragging.init(event, 'hand', { trapClick: false, autoActivate: autoActivate, cursor: HAND_CURSOR, data: { context: { reactivate: reactivate } } }); }; HandTool.prototype.toggle = function() { if (this.isActive()) { this._dragging.cancel(); } else { this.activateHand(); } }; HandTool.prototype.isActive = function() { var context = this._dragging.context(); if (context) { return /^(hand|hand\.move)$/.test(context.prefix); } return false; }; // helpers ////////// function isSpace(keyEvent) { return isKey(' ', keyEvent); } |