package cn.ffcs.hhs;
import cn.ffcs.hhs.R;
import android.content.Context;
import android.content.res.Resources;
import android.graphics.Bitmap;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Matrix;
import android.graphics.Paint;
import android.graphics.drawable.Drawable;
import android.util.Log;
import android.view.GestureDetector;
import android.view.MotionEvent;
import android.view.View;
import android.view.GestureDetector.OnGestureListener;
import android.view.View.OnTouchListener;
/**
*
*
* 类名称：TurnplateView
* 类描述：
* 创建人： huanghsh
* 创建时间：2011-11-29 上午10:49:27
* 修改人：Administrator
* 修改时间：2011-11-29 上午10:49:27
* 修改备注：
* @version
*
*/
public class TurnplateView extends View implements OnTouchListener{
private OnTurnplateListener onTurnplateListener;
public void setOnTurnplateListener(OnTurnplateListener onTurnplateListener) {
this.onTurnplateListener = onTurnplateListener;
}
/**
* 画笔：点、线
*/
private Paint mPaint = new Paint();
/**
* 画笔：圆
*/
private Paint paintCircle = new Paint();
/**
* 图标列表
*/
private Bitmap[] icons = new Bitmap[10];
/**
* point列表
*/
private Point[] points;
/**
* 数目
*/
private static final int PONIT_NUM = 6;
/**
* 圆心坐标
*/
private int mPointX=0, mPointY=0;
/**
* 半径
*/
private int mRadius = 0;
/**
* 每两个点间隔的角度
*/
private int mDegreeDelta;
/**
* 每次转动的角度差
*/
private int tempDegree = 0;
/**
* 选中的图标标识 999：未选中任何图标
*/
private int chooseBtn=999;
private Matrix mMatrix = new Matrix();
public TurnplateView(Context context, int px, int py, int radius) {
super(context);
mPaint.setColor(Color.RED);
mPaint.setStrokeWidth(2);
paintCircle.setAntiAlias(true);
paintCircle.setColor(Color.WHITE);
loadIcons();
mPointX = px;
mPointY = py;
mRadius = radius;
initPoints();
computeCoordinates();
}
/**
*
* 方法名：loadBitmaps
* 功能：装载图片
* 参数：
* @param key
* @param d
* 创建人：huanghsh
* 创建时间：2011-11-28
*/
public void loadBitmaps(int key,Drawable d){
Bitmap bitmap = Bitmap.createBitmap(60,60,Bitmap.Config.ARGB_8888);
Canvas canvas = new Canvas(bitmap);
d.setBounds(0, 0, 60, 60);
d.draw(canvas);
icons[key]=bitmap;
}
/**
*
* 方法名：loadIcons
* 功能：获取所有图片
* 参数：
* 创建人：huanghsh
* 创建时间：2011-11-28
*/
public void loadIcons(){
Resources r = getResources();
loadBitmaps(0, r.getDrawable(R.drawable.auxiliary_list1));
loadBitmaps(1, r.getDrawable(R.drawable.auxiliary_list2));
loadBitmaps(2, r.getDrawable(R.drawable.auxiliary_list3));
loadBitmaps(3, r.getDrawable(R.drawable.auxiliary_list4));
loadBitmaps(4, r.getDrawable(R.drawable.auxiliary_list5));
loadBitmaps(5, r.getDrawable(R.drawable.cost_list1));
loadBitmaps(6, r.getDrawable(R.drawable.cost_list2));
loadBitmaps(7, r.getDrawable(R.drawable.cost_list3));
loadBitmaps(8, r.getDrawable(R.drawable.cost_list4));
loadBitmaps(9, r.getDrawable(R.drawable.cost_list5));
}
/**
*
* 方法名：initPoints
* 功能：初始化每个点
* 参数：
* 创建人：huanghsh
* 创建时间：2011-11-28
*/
private void initPoints() {
points = new Point[PONIT_NUM];
Point point;
int angle = 0;
mDegreeDelta = 360/PONIT_NUM;
for(int index=0; index<PONIT_NUM; index++) {
point = new Point();
point.angle = angle;
angle += mDegreeDelta;
point.bitmap = icons[index];
point.flag=index;
points[index] = point;
}
}
/**
*
* 方法名：resetPointAngle
* 功能：重新计算每个点的角度
* 参数：
* @param x
* @param y
* 创建人：huanghsh
* 创建时间：2011-11-28
*/
private void resetPointAngle(float x, float y) {
int degree = computeMigrationAngle(x, y);
for(int index=0; index<PONIT_NUM; index++) {
points[index].angle += degree;
if(points[index].angle>360){
points[index].angle -=360;
}else if(points[index].angle<0){
points[index].angle +=360;
}
}
}
/**
*
* 方法名：computeCoordinates
* 功能：计算每个点的坐标
* 参数：
* 创建人：huanghsh
* 创建时间：2011-11-28
*/
private void computeCoordinates() {
Point point;
for(int index=0; index<PONIT_NUM; index++) {
point = points[index];
point.x = mPointX+ (float)(mRadius * Math.cos(point.angle*Math.PI/180));
point.y = mPointY+ (float)(mRadius * Math.sin(point.angle*Math.PI/180));
point.x_c = mPointX+(point.x-mPointX)/2;
point.y_c = mPointY+(point.y-mPointY)/2;
//Log.e(TAG, point.angle+"");
}
}
/**
*
* 方法名：computeMigrationAngle
* 功能：计算偏移角度
* 参数：
* @param x
* @param y
* 创建人：huanghsh
* 创建时间：2011-11-28
*///
private int computeMigrationAngle(float x, float y) {
int a=0;
float distance = (float)Math.sqrt(((x-mPointX)*(x-mPointX) + (y-mPointY)*(y-mPointY)));
int degree = (int)(Math.acos((x-mPointX)/distance)*180/Math.PI);
if(y < mPointY) {
degree = -degree;
}
if(tempDegree!=0){
a = degree - tempDegree;
}
tempDegree=degree;
return a;
}
/**
*
* 方法名：computeCurrentDistance
* 功能：计算触摸的位置与各个元点的距离
* 参数：
* @param x
* @param y
* @return
* 创建人：huanghsh
* 创建时间：2011-11-29
*/
private void computeCurrentDistance(float x, float y) {
for(Point point:points){
float distance = (float)Math.sqrt(((x-point.x)*(x-point.x) + (y-point.y)*(y-point.y)));
if(distance<31){
chooseBtn = point.flag;
break;
}else{
chooseBtn = 999;
}
}
}
private void switchScreen(MotionEvent event){
computeCurrentDistance(event.getX(), event.getY());
//Log.e(TAG,chooseBtn+"");
onTurnplateListener.onPointTouch(chooseBtn);
}
@Override
public boolean dispatchTouchEvent(MotionEvent event) {
int action = event.getAction();
switch (action) {
case MotionEvent.ACTION_DOWN:
break;
case MotionEvent.ACTION_MOVE:
resetPointAngle(event.getX(), event.getY());
computeCoordinates();
invalidate();
break;
case MotionEvent.ACTION_UP:
switchScreen(event);
tempDegree = 0;
invalidate();
break;
case MotionEvent.ACTION_CANCEL:
//系统在运行到一定程度下无法继续响应你的后续动作时会产生此事件。
//一般仅在代码中将其视为异常分支情况处理
break;
}
return true;
}
@Override
public void onDraw(Canvas canvas) {
canvas.drawCircle(mPointX, mPointY, mRadius, paintCircle);
canvas.drawPoint(mPointX, mPointY, mPaint);
for(int index=0; index<PONIT_NUM; index++) {
canvas.drawPoint(points[index].x_c, points[index].y_c, mPaint);
drawInCenter(canvas, points[index].bitmap, points[index].x, points[index].y,points[index].flag);
}
}
/**
*
* 方法名：drawInCenter
* 功能：把点放到图片中心处
* 参数：
* @param canvas
* @param bitmap
* @param left
* @param top
* 创建人：huanghsh
* 创建时间：2011-11-28
*/
void drawInCenter(Canvas canvas, Bitmap bitmap, float left, float top,int flag) {
canvas.drawPoint(left, top, mPaint);
if(chooseBtn==flag){
//Log.e("Width", bitmap.getWidth()+";"+70f/bitmap.getWidth());
//Log.e("Height", bitmap.getHeight()+";"+70f/bitmap.getHeight());
mMatrix.setScale(70f/bitmap.getWidth(), 70f/bitmap.getHeight());
mMatrix.postTranslate(left-35, top-35);
canvas.drawBitmap(bitmap, mMatrix, null);
}else{
canvas.drawBitmap(bitmap, left-bitmap.getWidth()/2, top-bitmap.getHeight()/2, null);
}
}
class
Android应用源码之首页转盘-IT计算机-毕业设计.zip （33个子文件） 
Android应用源码之首页转盘 TurnplateDemo bin 
classes.dex 8KB TurnplateDemo.apk 60KB cn ffcs hhs R$layout.class 373B R$drawable.class 778B R$attr.class 319B R.class 447B Main.class 2KB TurnplateView.class 6KB TurnplateView$OnTurnplateListener.class 253B R$string.class 406B TurnplateView$Point.class 601B resources.ap_ 54KB res drawable 
auxiliary_list2.png 8KB cost_list6.png 6KB auxiliary_list1.png 7KB icon.png 3KB auxiliary_list4.png 7KB cost_list2.png 7KB auxiliary_list3.png 7KB cost_list5.png 7KB cost_list1.png 6KB cost_list3.png 7KB auxiliary_list5.png 7KB cost_list4.png 7KB values strings.xml 161B layout main.xml 382B default.properties 364B gen cn ffcs hhs R.java 1KB src cn ffcs hhs TurnplateView.java 8KB Main.java 1005B .project 849B .classpath 280B AndroidManifest.xml 675B资源评论
