我用于我的闪存应用程序外部触摸输入。我通过 as3 的 TUIO 库接收来自触摸面板的信号(https://code.google.com/p/tuio-as3/)
我有时会遇到问题,然后 TuioManager 错误地检测到必须接收触摸输入的对象。
private function getTopDisplayObjectUnderPoint(point:Point):DisplayObject {
var targets:Array = stage.getObjectsUnderPoint(point);
var item:DisplayObject = (targets.length > 0) ? targets[targets.length - 1] : stage;
if (this.touchTargetDiscoveryMode == TOUCH_TARGET_DISCOVERY_MOUSE_ENABLED) {
while (targets.length > 0) {
item = targets.pop() as DisplayObject;
//ignore debug cursor/object/blob and send object under debug cursor/object/blob
if ((item is ITuioDebugCursor || item is ITuioDebugBlob || item is ITuioDebugObject || item is ITuioDebugTextSprite) && targets.length > 0) {
continue;
}
if (item.parent != null && !(item is InteractiveObject)) item = item.parent;
if (item is InteractiveObject) {
if ((item as InteractiveObject).mouseEnabled) return item;
}
}
item = stage;
}
else if (this.touchTargetDiscoveryMode == TOUCH_TARGET_DISCOVERY_IGNORELIST) {
while (targets.length > 0) {
item = targets.pop();
//ignore debug cursor/object/blob and send object under debug cursor/object/blob
if ((item is ITuioDebugCursor || item is ITuioDebugBlob || item is ITuioDebugObject || item is ITuioDebugTextSprite) && targets.length > 0) {
continue;
}
if (!bubbleListCheck(item)) return item;
}
item = stage;
}
return item;
}
我用过this.touchTargetDiscoveryMode == TOUCH_TARGET_DISCOVERY_MOUSE_ENABLED
。
此函数不使用mouseChildren
属性。
例如,我在 fxg 图形中使用世界地图,我想禁用它的所有子项:worldMap.mouseChildren = false;
但是如果我使用系统鼠标输入,它就可以工作,但不能用于 TUIO。函数的结果getTopDisplayObjectUnderPoint
将是子影片剪辑之一。在跟踪中,我看到的层次结构如下:
worldMap
MovieClip
....
MovieClip
是的,我可以递归地mouseEnabled = false
为worldMap
. 它只能解决这个问题,但在更全局的情况下不能解决错误的对象选择问题。
我试图修改这个函数并写了两个辅助函数:
private function isMouseChildrenEnabled(obj:DisplayObject):Boolean {
if (obj.parent == null) {
return true;
}
return obj.parent.mouseChildren && isMouseChildrenEnabled(obj.parent);
}
private function findMouseEnabledObject(obj:InteractiveObject):InteractiveObject
{
if (obj.mouseEnabled && isMouseChildrenEnabled(obj))
return obj;
return obj.parent ? findMouseEnabledObject(obj.parent) : null;
}
private function getTopDisplayObjectUnderPoint(point:Point):DisplayObject {
var targets:Array = stage.getObjectsUnderPoint(point);
var item:DisplayObject = (targets.length > 0) ? targets[targets.length - 1] : stage;
if(this.touchTargetDiscoveryMode == TOUCH_TARGET_DISCOVERY_MOUSE_ENABLED){
while(targets.length > 0) {
item = targets.pop() as DisplayObject;
//ignore debug cursor/object/blob and send object under debug cursor/object/blob
if((item is ITuioDebugCursor || item is ITuioDebugBlob || item is ITuioDebugObject || item is ITuioDebugTextSprite) && targets.length > 0){
continue;
}
if (item.parent != null && !(item is InteractiveObject)) item = item.parent;
if (item is InteractiveObject) {
var io:InteractiveObject = findMouseEnabledObject(item as InteractiveObject);
if (io) return io;
}
}
item = stage;
} else if (this.touchTargetDiscoveryMode == TOUCH_TARGET_DISCOVERY_IGNORELIST) {
while(targets.length > 0) {
item = targets.pop();
//ignore debug cursor/object/blob and send object under debug cursor/object/blob
if((item is ITuioDebugCursor || item is ITuioDebugBlob || item is ITuioDebugObject || item is ITuioDebugTextSprite) && targets.length > 0){
continue;
}
if (!bubbleListCheck(item)) return item;
}
item = stage;
}
return item;
}
但是在新修复之后,我们有新的错误:(如果我使用 flex 拖放,我会看到错误。在拖放期间,flex 显示拖动的图像并且 tuio 检测到错误的放置目标。在 trace stage.getObjectsUnderPoint()中,我看到如下内容:
[n] - image (mouseEnabled=true, mouseChildren=true)
parent: embed_swf_drag_cursor... (mouseEnabled=false, mouseChildren=false)
parent: application_systemManager... (mouseEnabled=true, mouseChildren=true)
parent: stage
[n-1] - borderContainer (mouseEnabled=true, mouseChildren=true) - it is my drop target
结果我有 systemManager 作为目标,但我需要 BorderContainer。
如何正确找到用户输入的启用对象?
PS 在 Linux 和 Windows 闪存播放器上测试。
更新 13.11
我试图编写在点下启用对象的函数:
private function getTopEnabledObject(object:DisplayObjectContainer, hitPoint:Point):InteractiveObject
{
if (!object.mouseChildren)
return null;
var child:DisplayObject;
for (var i:int = object.numChildren - 1; i >= 0; i--)
{
child = object.getChildAt(i);
if (child.visible && child is InteractiveObject && child.hitTestPoint(hitPoint.x, hitPoint.y, true))
{
if (child is DisplayObjectContainer)
{
var target:InteractiveObject = getTopEnabledObject(child as DisplayObjectContainer, hitPoint);
if (target)
return target;
}
if ((child as InteractiveObject).mouseEnabled)
return child as InteractiveObject;
}
}
return null;
}
它在 5-10 次中缓慢工作。我在很短的时间内多次接触后崩溃了。