mirror of
https://github.com/mozilla/gecko-dev.git
synced 2024-12-11 16:32:59 +00:00
175 lines
5.0 KiB
JavaScript
175 lines
5.0 KiB
JavaScript
/* This Source Code Form is subject to the terms of the Mozilla Public
|
|
* License, v. 2.0. If a copy of the MPL was not distributed with this file,
|
|
* You can obtain one at http://mozilla.org/MPL/2.0/. */
|
|
|
|
/* global Components, XPCOMUtils, Utils, Logger, GestureSettings,
|
|
GestureTracker */
|
|
/* exported PointerRelay, PointerAdapter */
|
|
|
|
'use strict';
|
|
|
|
const Ci = Components.interfaces;
|
|
const Cu = Components.utils;
|
|
|
|
this.EXPORTED_SYMBOLS = ['PointerRelay', 'PointerAdapter']; // jshint ignore:line
|
|
|
|
Cu.import('resource://gre/modules/XPCOMUtils.jsm');
|
|
|
|
XPCOMUtils.defineLazyModuleGetter(this, 'Utils', // jshint ignore:line
|
|
'resource://gre/modules/accessibility/Utils.jsm');
|
|
XPCOMUtils.defineLazyModuleGetter(this, 'Logger', // jshint ignore:line
|
|
'resource://gre/modules/accessibility/Utils.jsm');
|
|
XPCOMUtils.defineLazyModuleGetter(this, 'GestureSettings', // jshint ignore:line
|
|
'resource://gre/modules/accessibility/Gestures.jsm');
|
|
XPCOMUtils.defineLazyModuleGetter(this, 'GestureTracker', // jshint ignore:line
|
|
'resource://gre/modules/accessibility/Gestures.jsm');
|
|
|
|
// The virtual touch ID generated by a mouse event.
|
|
const MOUSE_ID = 'mouse';
|
|
// Synthesized touch ID.
|
|
const SYNTH_ID = -1;
|
|
|
|
var PointerRelay = { // jshint ignore:line
|
|
/**
|
|
* A mapping of events we should be intercepting. Entries with a value of
|
|
* |true| are used for compiling high-level gesture events. Entries with a
|
|
* value of |false| are cancelled and do not propogate to content.
|
|
*/
|
|
get _eventsOfInterest() {
|
|
delete this._eventsOfInterest;
|
|
|
|
switch (Utils.widgetToolkit) {
|
|
case 'android':
|
|
this._eventsOfInterest = {
|
|
'touchstart' : true,
|
|
'touchmove' : true,
|
|
'touchend' : true };
|
|
break;
|
|
|
|
case 'gonk':
|
|
this._eventsOfInterest = {
|
|
'touchstart' : true,
|
|
'touchmove' : true,
|
|
'touchend' : true,
|
|
'mousedown' : false,
|
|
'mousemove' : false,
|
|
'mouseup': false,
|
|
'click': false };
|
|
break;
|
|
|
|
default:
|
|
// Desktop.
|
|
this._eventsOfInterest = {
|
|
'mousemove' : true,
|
|
'mousedown' : true,
|
|
'mouseup': true,
|
|
'click': false
|
|
};
|
|
if ('ontouchstart' in Utils.win) {
|
|
for (let eventType of ['touchstart', 'touchmove', 'touchend']) {
|
|
this._eventsOfInterest[eventType] = true;
|
|
}
|
|
}
|
|
break;
|
|
}
|
|
|
|
return this._eventsOfInterest;
|
|
},
|
|
|
|
_eventMap: {
|
|
'touchstart' : 'pointerdown',
|
|
'mousedown' : 'pointerdown',
|
|
'touchmove' : 'pointermove',
|
|
'mousemove' : 'pointermove',
|
|
'touchend' : 'pointerup',
|
|
'mouseup': 'pointerup'
|
|
},
|
|
|
|
start: function PointerRelay_start(aOnPointerEvent) {
|
|
Logger.debug('PointerRelay.start');
|
|
this.onPointerEvent = aOnPointerEvent;
|
|
for (let eventType in this._eventsOfInterest) {
|
|
Utils.win.addEventListener(eventType, this, true, true);
|
|
}
|
|
},
|
|
|
|
stop: function PointerRelay_stop() {
|
|
Logger.debug('PointerRelay.stop');
|
|
delete this.lastPointerMove;
|
|
delete this.onPointerEvent;
|
|
for (let eventType in this._eventsOfInterest) {
|
|
Utils.win.removeEventListener(eventType, this, true, true);
|
|
}
|
|
},
|
|
|
|
handleEvent: function PointerRelay_handleEvent(aEvent) {
|
|
// Don't bother with chrome mouse events.
|
|
if (Utils.MozBuildApp === 'browser' &&
|
|
aEvent.view.top instanceof Ci.nsIDOMChromeWindow) {
|
|
return;
|
|
}
|
|
if (aEvent.mozInputSource === Ci.nsIDOMMouseEvent.MOZ_SOURCE_UNKNOWN ||
|
|
aEvent.isSynthesized) {
|
|
// Ignore events that are scripted or clicks from the a11y API.
|
|
return;
|
|
}
|
|
|
|
let changedTouches = aEvent.changedTouches || [{
|
|
identifier: MOUSE_ID,
|
|
screenX: aEvent.screenX,
|
|
screenY: aEvent.screenY,
|
|
target: aEvent.target
|
|
}];
|
|
|
|
if (Utils.widgetToolkit === 'android' &&
|
|
changedTouches.length === 1 && changedTouches[0].identifier === 1) {
|
|
return;
|
|
}
|
|
|
|
if (changedTouches.length === 1 &&
|
|
changedTouches[0].identifier === SYNTH_ID) {
|
|
return;
|
|
}
|
|
|
|
aEvent.preventDefault();
|
|
aEvent.stopImmediatePropagation();
|
|
|
|
let type = aEvent.type;
|
|
if (!this._eventsOfInterest[type]) {
|
|
return;
|
|
}
|
|
let pointerType = this._eventMap[type];
|
|
this.onPointerEvent({
|
|
type: pointerType,
|
|
points: Array.prototype.map.call(changedTouches,
|
|
function mapTouch(aTouch) {
|
|
return {
|
|
identifier: aTouch.identifier,
|
|
x: aTouch.screenX,
|
|
y: aTouch.screenY
|
|
};
|
|
}
|
|
)
|
|
});
|
|
}
|
|
};
|
|
|
|
this.PointerAdapter = { // jshint ignore:line
|
|
start: function PointerAdapter_start() {
|
|
Logger.debug('PointerAdapter.start');
|
|
GestureTracker.reset();
|
|
PointerRelay.start(this.handleEvent);
|
|
},
|
|
|
|
stop: function PointerAdapter_stop() {
|
|
Logger.debug('PointerAdapter.stop');
|
|
PointerRelay.stop();
|
|
GestureTracker.reset();
|
|
},
|
|
|
|
handleEvent: function PointerAdapter_handleEvent(aDetail) {
|
|
let timeStamp = Date.now();
|
|
GestureTracker.handle(aDetail, timeStamp);
|
|
}
|
|
};
|