TransformTool 的使用

import flash.display.Shape;
import com.senocular.display.TransformTool;

// default tool
var defaultTool:TransformTool = new TransformTool();
addChild(defaultTool);

// custom tool with some custom options
var customTool:TransformTool = new TransformTool();
addChild(customTool);

customTool.raiseNewTargets = false;
customTool.moveNewTargets = true;
customTool.moveUnderObjects = false;

customTool.registrationEnabled = false;
customTool.rememberRegistration = false;

customTool.rotationEnabled = false;
customTool.constrainRotation = true;
customTool.constrainRotationAngle = 90/4;

customTool.constrainScale = true;
customTool.maxScaleX = 2;
customTool.maxScaleY = 2;

customTool.skewEnabled = false;

customTool.setSkin(TransformTool.SCALE_TOP_LEFT, new ScaleCircle());
customTool.setSkin(TransformTool.SCALE_TOP_RIGHT, new ScaleCircle());
customTool.setSkin(TransformTool.SCALE_BOTTOM_RIGHT, new ScaleCircle());
customTool.setSkin(TransformTool.SCALE_BOTTOM_LEFT, new ScaleCircle());
customTool.setSkin(TransformTool.SCALE_TOP, new ScaleCircle());
customTool.setSkin(TransformTool.SCALE_RIGHT, new ScaleCircle());
customTool.setSkin(TransformTool.SCALE_BOTTOM, new ScaleCircle());
customTool.setSkin(TransformTool.SCALE_LEFT, new ScaleCircle());

customTool.addControl(new CustomRotationControl());
customTool.addControl(new CustomResetControl());

// keep track of the current tool being used
var currTool:TransformTool = defaultTool;

// selecting objects on the screen
function select(event){
    if (event.target is Stage) {
        currTool.target = null;
    }else if (event.target is Sprite) {
        currTool.target = event.target as Sprite;
        toolInit();
    }
}

// changing tools using the toolChange button
function setTool(event:MouseEvent):void {

    // get other tool
    var newTool:TransformTool = (currTool == defaultTool) ? customTool : defaultTool;

    // make sure moveNewTargets is not set when setting tool this way
    var moveTargets:Boolean = newTool.moveNewTargets;
    newTool.moveNewTargets = false;
    newTool.target = currTool.target;
    newTool.moveNewTargets = moveTargets;

    // unset currTool
    currTool.target = null;
    currTool = newTool;

    toolInit();
}

// for setting a new tool
function toolInit():void {
    // raise
    currTool.parent.setChildIndex(currTool, currTool.parent.numChildren - 1);

    // center registration for customTool
    if (currTool == customTool) {
        currTool.registration = currTool.boundsCenter;
    }
}

// event handlers for selecting objects and changing tools
stage.addEventListener(MouseEvent.MOUSE_DOWN, select);
toolChange.addEventListener(MouseEvent.CLICK, setTool);

package {

    import flash.events.Event;
    import flash.events.MouseEvent;
    import flash.geom.Matrix;
    import flash.geom.Point;

    import com.senocular.display.TransformTool;
    import com.senocular.display.TransformToolControl;
    import com.senocular.display.TransformToolCursor;

    public class CustomResetControl extends TransformToolControl {

        public function CustomResetControl() {
            addEventListener(TransformTool.CONTROL_INIT, init, false, 0, true);
        }

        private function init(event:Event):void {

            // add event listeners
            transformTool.addEventListener(TransformTool.NEW_TARGET, update, false, 0, true);
            transformTool.addEventListener(TransformTool.TRANSFORM_TOOL, update, false, 0, true);
            transformTool.addEventListener(TransformTool.CONTROL_TRANSFORM_TOOL, update, false, 0, true);
            addEventListener(MouseEvent.CLICK, resetClick);

            // initial positioning
            update();
        }

        private function update(event:Event = null):void {
            if (transformTool.target) {
                // find to bottom right of selection
                var maxX:Number = Math.max(transformTool.boundsTopLeft.x, transformTool.boundsTopRight.x);
                maxX = Math.max(maxX, transformTool.boundsBottomRight.x);
                maxX = Math.max(maxX, transformTool.boundsBottomLeft.x);

                var maxY:Number = Math.max(transformTool.boundsTopLeft.y, transformTool.boundsTopRight.y);
                maxY = Math.max(maxY, transformTool.boundsBottomRight.y);
                maxY = Math.max(maxY, transformTool.boundsBottomLeft.y);

                // set location to found values
                x = maxX;
                y = maxY;
            }
        }

        private function resetClick(event:MouseEvent):void {

            // reset the matrix but keep the current location by
            // noting the change in the registration point
            var origReg:Point = transformTool.registration;

            // global matrix as a default matrix (identity)
            transformTool.globalMatrix = new Matrix();

            // find change in positioning based on registration
            // Note: registration location is based within
            // the coordinate space of the tool (not global)
            var regDiff = origReg.subtract(transformTool.registration);

            // update the tool matrix with the change in position
            // offsetting movement from the new matrix to have
            // the old and new registration points match
            var toolMatrix:Matrix = transformTool.toolMatrix;
            toolMatrix.tx += regDiff.x;
            toolMatrix.ty += regDiff.y;
            transformTool.toolMatrix = toolMatrix;

            // apply the new matrix to the target
            transformTool.apply();
        }
    }
}

package {

    import flash.events.Event;
    import flash.geom.Matrix;
    import flash.geom.Point;

    import com.senocular.display.TransformTool;
    import com.senocular.display.TransformToolControl;
    import com.senocular.display.TransformToolCursor;

    public class CustomRotationControl extends TransformToolControl {

        private var length:Number = 20;
        private var circle:ScaleCircle;

        public function CustomRotationControl() {
            addEventListener(TransformTool.CONTROL_INIT, init, false, 0, true);
            circle = new ScaleCircle();
            addChild(circle);
        }

        private function init(event:Event):void {

            // add event listeners
            transformTool.addEventListener(TransformTool.NEW_TARGET, update, false, 0, true);
            transformTool.addEventListener(TransformTool.TRANSFORM_TOOL, update, false, 0, true);
            transformTool.addEventListener(TransformTool.CONTROL_TRANSFORM_TOOL, update, false, 0, true);
            transformTool.addEventListener(TransformTool.CONTROL_DOWN, controlMouseDown, false, 0, true);
            transformTool.addEventListener(TransformTool.CONTROL_MOVE, controlMove, false, 0, true);

            // set this as a reference for the rotation cursor
            var cursor:TransformToolCursor = transformTool.rotationCursor;
            cursor.addReference(this);

            // initial positioning
            update();
        }

        private function update(event:Event = null):void {
            if (transformTool.target) {

                // move circle to point
                var top:Point = transformTool.boundsTop;
                var bottom:Point = transformTool.boundsBottom;
                var diff = top.subtract(bottom);
                var angle = Math.atan2(diff.y, diff.x);
                circle.x = top.x + length * Math.cos(angle);
                circle.y = top.y + length * Math.sin(angle);

                // draw connecting line
                graphics.clear();
                graphics.lineStyle(0,0);
                // draw from top of top ScaleCircle
                var offset:Number = circle.height/2;
                graphics.moveTo(top.x + offset * Math.cos(angle), top.y + offset * Math.sin(angle));
                graphics.lineTo(circle.x, circle.y);
            }
        }

        private function controlMouseDown(event:Event):void {
            if (transformTool.currentControl == this) {
                // if this tool is being clicked, set
                // the reference point to be the mouse location
                _referencePoint = transformTool.mouse;
            }
        }

        private function controlMove(event:Event):void {
            if (transformTool.currentControl == this) {
                // use default tool rotation if this tool is being used
                transformTool.rotationInteraction();
            }
        }
    }
}

import com.senocular.display.TransformTool;
var currTool:TransformTool = new TransformTool();
addChild(currTool);
currTool.target = a;
stage.addEventListener(MouseEvent.MOUSE_DOWN, select);
function select(event) {
    if (event.target is Stage) {
        currTool.target = null;
    } else if (event.target is Sprite) {
        currTool.target = event.target as Sprite;
//        toolInit();
    }
}

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