jstd-web/node_modules/diagram-js/lib/util/Mouse.js

56 lines
1.1 KiB
JavaScript

import {
getOriginal as getOriginalEvent
} from './Event';
import {
isMac
} from './Platform';
export {
isMac
} from './Platform';
export function isButton(event, button) {
return (getOriginalEvent(event) || event).button === button;
}
export function isPrimaryButton(event) {
// button === 0 -> left áka primary mouse button
return isButton(event, 0);
}
export function isAuxiliaryButton(event) {
// button === 1 -> auxiliary áka wheel button
return isButton(event, 1);
}
export function isSecondaryButton(event) {
// button === 2 -> right áka secondary button
return isButton(event, 2);
}
export function hasPrimaryModifier(event) {
var originalEvent = getOriginalEvent(event) || event;
if (!isPrimaryButton(event)) {
return false;
}
// Use cmd as primary modifier key for mac OS
if (isMac()) {
return originalEvent.metaKey;
} else {
return originalEvent.ctrlKey;
}
}
export function hasSecondaryModifier(event) {
var originalEvent = getOriginalEvent(event) || event;
return isPrimaryButton(event) && originalEvent.shiftKey;
}