OnScaleDragGestureListener.java

/*******************************************************************************
 * Copyright 2011, 2012 Chris Banes.
 * <p/>
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * <p/>
 * http://www.apache.org/licenses/LICENSE-2.0
 * <p/>
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *******************************************************************************/

package me.xiaopan.sketch.feature.zoom.gestures;

public interface OnScaleDragGestureListener {

    void onDrag(float dx, float dy);

    void onFling(float startX, float startY, float velocityX,
                 float velocityY);

    void onScale(float scaleFactor, float focusX, float focusY);

    boolean onScaleBegin();

    void onScaleEnd();
}