Question

我开发了一种拖放应用程序，用于在足球游戏中记录统计数据，该程序在桌面上可以完美运行。但是，我的下一个挑战是，我需要它与手机/ ipad兼容。因此，我需要使用Javascript将触摸事件映射到鼠标事件，但是我不确定如何做到这一点。

此代码处理拖动事件：

    function drag_start(event) {
    _('app_status').innerHTML = "Dragging the "+event.target.getAttribute('name');
    event.dataTransfer.dropEffect = "move";
    event.dataTransfer.setData("text", event.target.getAttribute('id') );
}

function drag_enter(event) {
    _('app_status').innerHTML = "You are dragging over the "+event.target.getAttribute('name');
}

function drag_leave(event) {
    _('app_status').innerHTML = "You left the "+event.target.getAttribute('name');
}

function drag_end(event) {
    if(droppedIn == false){
        _('app_status').innerHTML = "You let the "+event.target.getAttribute('name')+" go.";
    }
    droppedIn = false;
}

我已尝试根据此问题JavaScript mapping touch events to mouse events

添加此代码

    function touchHandler(event)
{
    var touches = event.changedTouches,
        first = touches[0],
        type = "";
    switch(event.type)
    {
        case "touchstart": type = "mousedown"; break;
        case "touchmove":  type = "mousemove"; break;        
        case "touchend":   type = "mouseup";   break;
        default:           return;
    }

    // initMouseEvent(type, canBubble, cancelable, view, clickCount, 
    //                screenX, screenY, clientX, clientY, ctrlKey, 
    //                altKey, shiftKey, metaKey, button, relatedTarget);

    var simulatedEvent = document.createEvent("MouseEvent");
    simulatedEvent.initMouseEvent(type, true, true, window, 1, 
                                  first.screenX, first.screenY, 
                                  first.clientX, first.clientY, false, 
                                  false, false, false, 0/*left*/, null);

    first.target.dispatchEvent(simulatedEvent);
    event.preventDefault();
}

function init() 
{
    document.addEventListener("touchstart", touchHandler, true);
    document.addEventListener("touchmove", touchHandler, true);
    document.addEventListener("touchend", touchHandler, true);
    document.addEventListener("touchcancel", touchHandler, true);    
}

任何帮助都非常感激:)

如何将触摸事件映射到鼠标事件

0 个答案: