MapTouchListener (2).rar_图片拖动放大_拖动

package com.jhqc.vr.travel.weight.event; /** * Created by Solomon on 2017/10/18 0018. */ import android.graphics.Matrix; import android.graphics.PointF; import android.view.MotionEvent; import android.view.View; import com.jhqc.vr.travel.util.LogUtils; import com.jhqc.vr.travel.weight.MapPointView; import com.jhqc.vr.travel.weight.MapView; import com.jhqc.vr.travel.weight.event.support.MapMatrix; import java.util.Iterator; /** * Created by Solomon on 2017/10/17 0017. * 地图 */ public class MapTouchListener implements View.OnTouchListener { MapView mMapView; /** * 记录是拖拉照片模式还是放大缩小照片模式 */ private int mode = 0;// 初始状态 /** * 拖拉照片模式 */ private static final int MODE_DRAG = 1; /** * 放大缩小照片模式 */ private static final int MODE_ZOOM = 2; /** * 用于记录开始时候的坐标位置 */ private PointF startPoint = new PointF(); /** * 用于记录拖拉图片移动的坐标位置 */ private MapMatrix matrix; /** * 用于记录图片要进行拖拉时候的坐标位置 */ private Matrix currentMatrix; /** * 两个手指的开始距离 */ private float downDistance; /** * 两个手指的中间点 */ private PointF middlePoint; public MapTouchListener(MapView mapView) { this.mMapView = mapView; Matrix scrMatrix = this.mMapView.baseImageView.getImageMatrix(); currentMatrix = new Matrix(scrMatrix); matrix = new MapMatrix(); matrix.set(currentMatrix); this.mMapView.baseImageView.setImageMatrix(matrix); } @Override public boolean onTouch(View v, MotionEvent event) { /** 通过与运算保留最后八位 MotionEvent.ACTION_MASK = 255 */ switch (event.getAction() & MotionEvent.ACTION_MASK) { // 手指压下屏幕 case MotionEvent.ACTION_DOWN: mode = MODE_DRAG; this.mMapView.Touch_longPressTag = true; this.mMapView.downTime = System.currentTimeMillis(); if (mMapView.isScaleEnable()) { // 记录ImageView当前的移动位置 currentMatrix.set(this.mMapView.baseImageView.getImageMatrix()); startPoint.set(event.getX(), event.getY()); this.mMapView.setTouchDownX(event.getX()); this.mMapView.setTouchDownY(event.getY()); } break; // 手指在屏幕上移动，改事件会被不断触发 case MotionEvent.ACTION_MOVE: if (mMapView.isScaleEnable()) { float[] values = new float[9]; currentMatrix.getValues(values); PointF pointLT = mMapView.baseImageView.getLeftPointF(values); PointF pointRB = mMapView.baseImageView.getRightBottomPointF(values); // 拖拉图片 if (mode == MODE_DRAG) { float dx = event.getX() - startPoint.x; // 得到x轴的移动距离 float dy = event.getY() - startPoint.y; // 得到x轴的移动距离 float realW = mMapView.baseImageView.getRealWidth(values); float realH = mMapView.baseImageView.getRealHeight(values); float width = mMapView.baseImageView.getImageWidth(); float height = mMapView.baseImageView.getImageHeight(); LogUtils.logView("-----------------"); ////////////////////////////////////start//////////////////////////////////// { /** 拦截边界*/ LogUtils.logView("手势移动x:" + dx); LogUtils.logView("手势移动y:" + dy); /** 左滑：图片向右移：检查左边界，如果超出边界，则重置 */ if (dx > 0) { if (pointLT.x >= 0) { //如果图片已经超出，还原 dx = -pointLT.x; } else if ((realW - Math.abs(pointLT.x) < dx)) { dx = realW - Math.abs(pointLT.x); } else if ((realW - Math.abs(pointRB.x) < dx)) { dx = realW - Math.abs(pointRB.x); } LogUtils.logView("x轴出左边界了，重置移动位置：" + dx); } else if (dx < 0) { /** 右滑：图片向左移：检查右边界，如果超出边界，则重置 */ if ((pointRB.x - Math.abs(dx)) <= width || pointRB.x <= width) { dx = -(pointRB.x - width); LogUtils.logView("x轴出右边界了，重置移动位置：" + dx); } } if (dy > 0) { /** 上滑：图片下移：检查上边界，如果超出边界，则重置 */ if (pointLT.y >= 0) { //如果图片已经超出，还原 dy = -pointLT.y; } else if ((realH - Math.abs(pointLT.y) < dy)) { dy = realH - Math.abs(pointLT.y); } else if ((realH - Math.abs(pointRB.y) < dy)) { dy = realH - Math.abs(pointRB.y); } LogUtils.logView("y轴出上边界了，重置移动位置：" + dy); } else if (dy < 0) { /** 下滑：图片上移：检查下边界，如果超出边界，则重置 */ if ((pointRB.y - Math.abs(dy)) <= height || pointRB.y <= height) { dy = -(pointRB.y - height); LogUtils.logView("y轴出下边界了，重置移动位置：" + dy); } } LogUtils.logView("pointLT.x:" + pointLT.x); LogUtils.logView("pointLT.y:" + pointLT.y); LogUtils.logView("pointRB.x:" + pointRB.x); LogUtils.logView("pointRB.y:" + pointRB.y); LogUtils.logView("realW:" + realW); LogUtils.logView("realH:" + realH); LogUtils.logView("width:" + width); LogUtils.logView("height:" + height); LogUtils.logView("-----------------"); } /////////////////////////////////////end//////////////////////////////////// // 在没有移动之前的位置上进行移动 matrix.set(currentMatrix); matrix.postTranslate(dx, dy); matrix.setRealPoint(realW, realH); matrix.setViewPoint(width, height); matrix.setRBPoint(pointRB.x, pointRB.y); // 如果 手指移动 距离不超过 5 个像素点 的 视为 没有移动 float offset = (float) Math.sqrt(dx * dx + dy * dy); this.mMapView.Touch_longPressTag = offset < 5 ? true : false; } // 放大缩小图片 else if (mode == MODE_ZOOM) {