How To Create A Touchevent In Chrome?

The W3C specification declares initTouchEvent as following: void initTouchEvent (in DOMString type, in boolean canBubble, in boole

Solution 1:

By looking at the Chromium source and Qiita (in Japanese), this seems like how its parameters are arranged:

initTouchEvent (TouchList touches,
                TouchList targetTouches,
                TouchList changedTouches,
                Stringtype,
                Window view,
                number screenX,
                number screenY,
                number clientX,
                number clientY,
                boolean ctrlKey, 
                boolean altKey,
                boolean shiftKey,
                boolean metaKey);

Notice Chrome does not follow the W3C spec.

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Relevant part in the Chromium source:

TouchEvent.cpp Line 63:

void TouchEvent::initTouchEvent(ScriptState* scriptState, TouchList* touches, TouchList* targetTouches,
        TouchList* changedTouches, const AtomicString& type,
        PassRefPtrWillBeRawPtr<AbstractView> view,
        int, int, int, int,
        bool ctrlKey, bool altKey, bool shiftKey, bool metaKey)
{
    if (dispatched())
        return;

    if (scriptState->world().isIsolatedWorld())
        UIEventWithKeyState::didCreateEventInIsolatedWorld(ctrlKey, altKey, shiftKey, metaKey);

    bool cancelable = true;
    if (type == EventTypeNames::touchcancel)
        cancelable = false;

    initUIEvent(type, true, cancelable, view, 0);

    m_touches = touches;
    m_targetTouches = targetTouches;
    m_changedTouches = changedTouches;
    m_ctrlKey = ctrlKey;
    m_altKey = altKey;
    m_shiftKey = shiftKey;
    m_metaKey = metaKey;
}