在stage-Actionscript中保持较大的图像或对象可拖动

Posted 2021-02-25

This function will keep an image that is larger than the stage dragging within the stage view, stopping at any edge of the image.

hiResSprite.addEventListener(MouseEvent.MOUSE_DOWN,startDragHiRes);
 
function startDragHiRes(e:Event):void {
    var hiResWidth = e.target.width;
    var hiResHeight = e.target.height;
    var stageWidthVal = stage.stageWidth;
    var stageHeightVal = stage.stageHeight;
 
    var hiResX = hiResWidth - stageWidthVal;
    var hiResY = hiResHeight - stageHeightVal;
    var dragWidth = hiResWidth - stageWidthVal;
    var dragHeight = hiResHeight - stageHeightVal;
 
    var hiResDragRect = new Rectangle(-hiResX,-hiResY,dragWidth,dragHeight);
    hiResSprite.startDrag(false,hiResDragRect);
}