/**  *   */ package com.text.myviewdemo.view;   import org.apache.http.conn.routing.Routeinfo.LayerTyPE;   import android.content.Context; import android.graphics.Canvas; import android.graphics.Color; import android.graphics.DashPathEffect; import android.graphics.Paint; import android.graphics.PorterDuff; import android.graphics.PorterDuffXfermode; import android.graphics.Xfermode; import android.graphics.PorterDuff.Mode; import android.util.AttributeSet; import android.util.LOG; import android.view.MotionEvent; import android.view.View;   /**  * @author chenhanrong  *  */ public class CCView extends View implements android.view.View.OnClickListener{  PRivate Paint paint;  private float[] line_r,line_l,line_1,line_2,line_3,line_t; // private float line1YL,line1YR,line2YL,line2YR,line3YL,line3YR;  public Context context;  private float radiu;  private boolean showPoint = false;  private boolean cmP1=false;  private boolean cmP2=false;  private boolean cmP3=false;  private boolean cmP4=false;    private boolean cmP5=false;  private boolean cmP6=false;    private boolean cmP7=false;  private boolean cmP8=false;    private boolean cmP9=false;  private boolean cmP10=false;  private boolean isFirst = true;  private boolean isMove = false;      public final static int D_LEFT =0;  public final static int D_RIGHT =1;    public final static int TYPE_MIN =0;  public final static int TYPE_MAX =1;        public CCView(Context context) {  this(context,null);  }    public CCView(Context context, AttributeSet attrs) {  this(context,attrs,0);  }        public CCView(Context context, AttributeSet attrs, int defStyleAttr) {  super(context, attrs, defStyleAttr);  this.context = context;  inIT();  }        /**  * 初始化控件  */  private void init() {  paint = new Paint();   /**    * 去锯齿    */  paint.setAntiAlias(true);  /**   * 设置paint的颜色   */  paint.setColor(Color.red);  /**   * 设置paint的 style   */  paint.setStyle(Paint.Style.FILL);  /**   * 设置paint的外框宽度   */  paint.setstrokeWidth(10);    setOnClickListener(this);  setOnTouchListener(new OnTouchListener() {     @override     public boolean onTouch(View v, MotionEvent event) {      return false;     }    });  setLayerType(LAYER_TYPE_HARDWARE, paint);  radiu = 20f;  }    @Override  protected void onDraw(Canvas canvas) {  super.onDraw(canvas);  canvas.drawColor(0x00000000, PorterDuff.Mode.CLEAR); // paint.setXfermode(new PorterDuffXfermode(PorterDuff.Mode.DST_OVER));  if(isfirst){  line_l = new float[]{getWidth()/4,getHeight()/4,getWidth()/8,getHeight()};  line_r = new float[]{3*getWidth()/4, getHeight()/4,7*getWidth()/8, getHeight()};  line_1 = new float[]{getPointX(line_l, line_l[1]*2f),line_l[1]*2f,getPointX(line_r, line_r[1]*2f), line_r[1]*2f};  line_2 = new float[]{getPointX(line_l, line_l[1]*2.5f), line_l[1]*2.5f, getPointX(line_r, line_r[1]*2.5f), line_r[1]*2.5f};  line_3 = new float[]{getPointX(line_l, line_l[1]*3f), line_l[1]*3f, getPointX(line_r, line_r[1]*3f), line_r[1]*3f};    isfirst = false;  }  int canvasWidth = canvas.getWidth();   int canvasHeight = canvas.getHeight();   int layerId = canvas.saveLayer(0, 0, canvasWidth, canvasHeight, null, Canvas.ALL_SAVE_FLAG); // paint.setXfermode(new PorterDuffXfermode(Mode.DST_OVER));  line_t = new float[]{getPointX(line_l, line_l[1]), line_l[1], getPointX(line_r, line_r[1]), line_r[1]};    if(showPoint){   //四条横线   canvas.drawLines(line_t, paint);  paint.setPathEffect(new DashPathEffect(new float[] {20, 5}, 0));   canvas.drawLines(line_1, paint);  paint.setColor(Color.GREEN);  canvas.drawLines(line_2, paint);  paint.setColor(Color.YELLOW);  canvas.drawLines(line_3, paint);  paint.setColor(Color.RED);  paint.setPathEffect(null);    //左右两边线  canvas.drawLines(line_l, paint);   canvas.drawLines(line_r, paint);      //中间三条横线交点  canvas.drawCircle(line_1[0], line_1[1],radiu, paint);  canvas.drawCircle(line_1[2], line_1[3],radiu, paint);  paint.setColor(Color.GREEN);  canvas.drawCircle(line_2[0], line_2[1],radiu, paint);  canvas.drawCircle(line_2[2], line_2[3],radiu, paint);  paint.setColor(Color.YELLOW);  canvas.drawCircle(line_3[0], line_3[1],radiu, paint);  canvas.drawCircle(line_3[2], line_3[3],radiu, paint);  paint.setColor(Color.RED);  //左右四点  canvas.drawCircle(line_l[0], line_l[1],radiu, paint);  canvas.drawCircle(line_l[2], line_l[3],radiu, paint);    canvas.drawCircle(line_r[0], line_r[1],radiu, paint);  canvas.drawCircle(line_r[2], line_r[3],radiu, paint);    }else{  float lf=getDashLineLength(D_LEFT);  float rf=getDashLineLength(D_RIGHT);  canvas.drawLines(line_t, paint);  paint.setPathEffect(new DashPathEffect(new float[] {20, 5}, 0));  canvas.drawLine(line_1[0],line_1[1],lf,getPointY(line_1, lf), paint);  canvas.drawLine(rf,getPointY(line_1, rf),line_1[2],line_1[3], paint);  paint.setColor(Color.GREEN);   canvas.drawLine(line_2[0],line_2[1],lf,getPointY(line_2, lf), paint);  canvas.drawLine(rf,getPointY(line_2, rf),line_2[2],line_2[3], paint);  paint.setColor(Color.YELLOW);  canvas.drawLine(line_3[0],line_3[1],lf,getPointY(line_3, lf), paint);  canvas.drawLine(rf,getPointY(line_3, rf),line_3[2],line_3[3], paint);  paint.setPathEffect(null);  paint.setColor(Color.RED);  //左右两边线  canvas.drawLines(line_l, paint);   canvas.drawLines(line_r, paint);  canvas.drawCircle(line_l[0], line_l[1],paint.getStrokeWidth()/2, paint);  canvas.drawCircle(line_r[0], line_r[1],paint.getStrokeWidth()/2, paint);  } // paint.setStyle(Paint.Style.STROKE);  paint.setColor(Color.RED);  paint.setPathEffect(null);  paint.setXfermode(null);  canvas.reStoreToCount(layerId);  }  /**  * 获取坐标x  * @param line 直线坐标系  * @param y y点  * @return  */  private float getPointX(float[] line,float y){  float x = 0; // Log.d("chr", "line====>"+line.length+":::y====>"+y);  float x1 = line[0];  float y1 = line[1];  float x2 = line[2];  float y2 = line[3];  x = ((y-y1)/(y2-y1))*(x2-x1)+x1;  return x;  }  /**  * 获取坐标y  * @param line:直线坐标系  * @param x:x点  * @return  */    private float getPointY(float[] line,float x){  float y = 0; // Log.d("chr", "line====>"+line.length+":::y====>"+y);  float x1 = line[0];  float y1 = line[1];  float x2 = line[2];  float y2 = line[3];  y = ((x-x1)/(x2-x1))*(y2-y1)+y1;    return y;  }  /**  * 获取点应该移动到的Y坐标  * @param line:线段坐标  * @param y:滑动时的y坐标  * @return  */    private float getMoveY(float[] line,float y){    if(y<=line[1]+ radiu){  y=line[1]+radiu*2.0f;   }     if(y>=line[3]-radiu*2.0f){  y=line[3]-radiu*2.0f;   }    return y;  }    /**  *   * @param direction 获取虚线长度  * @return  */  private float getDashLineLength(int direction){  float length = 0;  int a = 20;  switch (direction) {  case D_LEFT:  length = line_t[0]+(line_t[2]-line_t[0])/a;  break;  case D_RIGHT:  length = line_t[0]+(a-1)*(line_t[2]-line_t[0])/a;  break;  }  return length;  }    /**  * 获取最小值  * @return  */  private float getMinPoint(float point[]){  float min = point[0];  for(int i=0;i<point.length;i++){  if(min>point[i]){  min=point[i];  }  }  return min;  }    /**  * 获取最大值  * @return  */  private float getMaxpoint(float point[]){  float max = point[0];  for(int i=0;i<point.length;i++){  if(max<point[i]){  max=point[i];  }  }  return max;  }  /**  * 获取y轴限制点  * @param point  * @param y  * @param type  * @return  */  private float getLimtMoveY(float point[],float y,int type){    if(type == TYPE_MIN){  float limt = getMinPoint(point);  if(y>limt-radiu*2.0f){  y = limt-radiu*2.0f;  }  }  if(type == TYPE_MAX){  float limt2 = getMaxPoint(point);  if(y<limt2+radiu*2.0f){  y = limt2+radiu*2.0f;  }  }    return y;  }      public void proofView(int direction){  switch (direction) {  case D_LEFT:  line_1[3] = line_1[1];  line_1[2] = getPointX(line_r, line_1[1]);    line_2[3] = line_2[1];  line_2[2] = getPointX(line_r, line_2[1]);    line_3[3] = line_3[1];  line_3[2] = getPointX(line_r, line_3[1]);    break;    case D_RIGHT:  line_1[1] = line_1[3];  line_1[0] = getPointX(line_l, line_1[3]);    line_2[1] = line_2[3];  line_2[0] = getPointX(line_l, line_2[3]);    line_3[1] = line_3[3];  line_3[0] = getPointX(line_l, line_3[3]);    break;  }    invalidate();  }      @Override  public boolean onTouchEvent(MotionEvent event) {  // TODO Auto-generated method stub  float x =event.getX();  float y =event.getY();    switch (event.getAction()) {  case MotionEvent.ACTION_DOWN:  if(showPoint){   isMove = false;  Log.d("chr", "MotionEvent.ACTION_DOWN::x====>"+x+"::::y===>"+y);  if(x<=(line_l[0]+radiu*2.0f)    && x>=(line_l[0]-radiu*2.0f)   && y>=(line_l[1]-radiu*2.0f)   &&y<=(line_l[1]+radiu*2.0f)){  cmP1 = true;  }  else if(x<=(line_r[0]+radiu*2.0f)    && x>=(line_r[0]-radiu*2.0f)   && y>=(line_r[1]-radiu*2.0f)   &&y<=(line_r[1]+radiu*2.0f)){  cmP2 = true;  }else if(x<=(line_l[2]+radiu*2.0f )   && x>=(line_l[2]-radiu*2.0f)   && y>=(line_l[3]-radiu*2.0f)   &&y<=(line_l[3]+radiu*2.0f)){  cmP3 = true;  }else if(x<=(line_r[2]+radiu*2.0f )   && x>=(line_r[2]-radiu*2.0f)   && y>=(line_r[3]-radiu*2.0f)   &&y<=(line_r[3]+radiu*2.0f)){  cmP4 = true;  }else if(x<=(line_1[0]+radiu*2.0f )   && x>=(line_1[0]-radiu*2.0f)   && y>=(line_1[1]-radiu*2.0f)   &&y<=(line_1[1]+radiu*2.0f)){  cmP5 = true;  }else if(x<=(line_1[2]+radiu*2.0f )   && x>=(line_1[2]-radiu*2.0f)   && y>=(line_1[3]-radiu*2.0f)   &&y<=(line_1[3]+radiu*2.0f)){  cmP6 = true;  }else if(x<=(line_2[0]+radiu*2.0f )   && x>=(line_2[0]-radiu*2.0f)   && y>=(line_2[1]-radiu*2.0f)   &&y<=(line_2[1]+radiu*2.0f)){  cmP7 = true;  }else if(x<=(line_2[2]+radiu*2.0f)   && x>=(line_2[2]-radiu*2.0f)   && y>=(line_2[3]-radiu*2.0f)   &&y<=(line_2[3]+radiu*2.0f)){  cmP8 = true;  }else if(x<=(line_3[0]+radiu *2.0f)   && x>=(line_3[0]-radiu*2.0f)   && y>=(line_3[1]-radiu*2.0f)   &&y<=(line_3[1]+radiu*2.0f)){  cmP9 = true;  }else if(x<=(line_3[2]+radiu*2.0f )   && x>=(line_3[2]-radiu*2.0f)   && y>=(line_3[3]-radiu*2.0f)   &&y<=(line_3[3]+radiu*2.0f)){  cmP10 = true;  }  }    break;    case MotionEvent.ACTION_MOVE:  float[] point_L = new float[]{line_1[1],line_2[1],line_3[1]};  float[] point_R = new float[]{line_1[3],line_2[3],line_3[3]};  if(cmP1){  isMove = true;    line_l[0] =x;  line_l[1] =getLimtMoveY(point_L, y, TYPE_MIN);  line_1[0]= getPointX(line_l,line_1[1]);  line_2[0]= getPointX(line_l,line_2[1]);  line_3[0]= getPointX(line_l,line_3[1]);  }else if(cmP2){  isMove = true;  line_r[0] = x;  line_r[1] = getLimtMoveY(point_R, y, TYPE_MIN);  line_1[2]= getPointX(line_r,line_1[3]);  line_2[2]= getPointX(line_r,line_2[3]);  line_3[2]= getPointX(line_r,line_3[3]);  }else if(cmP3){  isMove = true;  line_l[2] =x;  line_l[3] =getLimtMoveY(point_L, y, TYPE_MAX);  line_1[0]= getPointX(line_l,line_1[1]);  line_2[0]= getPointX(line_l,line_2[1]);  line_3[0]= getPointX(line_l,line_3[1]);  }else if(cmP4){  isMove = true;  line_r[2] = x;  line_r[3] = getLimtMoveY(point_R, y, TYPE_MAX);  line_1[2]= getPointX(line_r,line_1[3]);  line_2[2]= getPointX(line_r,line_2[3]);  line_3[2]= getPointX(line_r,line_3[3]);  }else if(cmP5){  isMove = true;  y=getMoveY(line_l,y);  line_1[0]= getPointX(line_l, y);  line_1[1]= y;  }else if(cmP6){  isMove = true;  y=getMoveY(line_r,y);  line_1[2]= getPointX(line_r, y);  line_1[3]= y;  }else if(cmP7){  isMove = true;  y=getMoveY(line_l,y);  line_2[0]= getPointX(line_l, y);  line_2[1]= y;  }else if(cmP8){  isMove = true;  y=getMoveY(line_r,y);  line_2[2]= getPointX(line_r, y);  line_2[3]= y;  }else if(cmP9){  isMove = true;  y=getMoveY(line_l,y);  line_3[0]= getPointX(line_l, y);  line_3[1]= y;  }else if(cmP10){  isMove = true;  y=getMoveY(line_r,y);  line_3[2]= getPointX(line_r, y);  line_3[3]= y;  }   invalidate();   break;  case MotionEvent.ACTION_UP:  cmP1= false;  cmP2= false;  cmP3= false;  cmP4= false;    cmP5= false;  cmP6= false;    cmP7= false;  cmP8= false;    cmP9= false;  cmP10= false;  if(!isMove)  showPoint = !showPoint;  invalidate();  break;  }  return super.onTouchEvent(event);  }      @Override  public void onClick(View v) {  }     }