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模仿此效果,只需要 导入一下文件即可 :BookActivity.java,BookPageFactory.java,PageWidget.java
package com.andorid.shu.love;
import java.io.File;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import android.app.Activity;
import android.content.Context;
import android.database.Cursor;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.Canvas;
import android.os.Bundle;
import android.os.Environment;
import android.util.Log;
import android.view.Display;
import android.view.MotionEvent;
import android.view.View;
import android.view.View.OnTouchListener;
import android.widget.Toast;
import com.sqlite.DbHelper;
public class BookActivity extends Activity {
/** Called when the activity is first created. */
public final static int OPENMARK = 0;
public final static int SAVEMARK = 1;
public final static int TEXTSET = 2;
private PageWidget mPageWidget;
private Bitmap mCurPageBitmap, mNextPageBitmap;
private Canvas mCurPageCanvas, mNextPageCanvas;
private BookPageFactory pagefactory;
private static Boolean isExit = false;//用于判断是否推出
private static Boolean hasTask = false;
private int whichSize=6;//当前的字体大小
private int txtProgress = 0;//当前阅读的进度
private String txtPath = "/sdcard/lovereader/百年孤独.txt";
private String bookPath = "/sdcard/lovereader/";
final String[] font = new String[] {"20","24","26","30","32","36",
"40","46","50","56","60","66","70"};
int curPostion;
DbHelper db;
Context mContext;
Cursor mCursor;
BookInfo book = null;
SetupInfo setup = null;
//add for 2015-03-04
private int[] mPics = new int [] {R.drawable.c0,R.drawable.c1,R.drawable.c2,R.drawable.c3};
private int mCurrent = 0;
private int mNext = 1;
//add for 2015-03-06
private List<String> mFileList = new ArrayList<String>();
private static final String TAG = "BookActivity";
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
/*requestWindowFeature(Window.FEATURE_NO_TITLE);
getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
WindowManager.LayoutParams.FLAG_FULLSCREEN);*/
Display display = getWindowManager().getDefaultDisplay();
int w = display.getWidth();
int h = display.getHeight();
System.out.println(w + "\t" + h);
BitmapFactory.Options options = new BitmapFactory.Options();
options.inSampleSize = 2;//图片大小，设置越大，图片越不清晰，占用空间越小
/*String SDPath = getSDPath();
Log.d(TAG, "sdPath:"+SDPath);*/
///getFile(new File("/storage/extSdCard/pic/pic_1"));
//get FileDirPath
String dirPath = getIntent().getStringExtra("....");
dirPath = "/storage/extSdCard/pic/pic_1";
File mFile = new File(dirPath);
if(mFile.exists()){
if(mFile.isDirectory()){
if(mFile.listFiles().length==0){
Toast.makeText(this, "文件不存在!", Toast.LENGTH_SHORT).show();
return;
}
}
}
try {
//获取文件夹下的所有图片路径 填充mFileList集合
getFile(mFile);
} catch (IOException e2) {
// TODO Auto-generated catch block
e2.printStackTrace();
}
pagefactory = new BookPageFactory(w, h,mFileList);
mCurPageBitmap = BitmapFactory.decodeFile(mFileList.get(mCurrent), options);
mNextPageBitmap = BitmapFactory.decodeFile(mFileList.get(mNext), options);
mCurPageBitmap = pagefactory.resizePic(mCurPageBitmap, w, h);
mNextPageBitmap = pagefactory.resizePic(mNextPageBitmap, w, h);
mContext = this;
mPageWidget = new PageWidget(this, w, h);
setContentView(mPageWidget);
mPageWidget.setBitmaps(mCurPageBitmap, mNextPageBitmap);
mPageWidget.setOnTouchListener(new OnTouchListener() {
@Override
public boolean onTouch(View v, MotionEvent e) {
boolean ret = false;
if (v == mPageWidget) {
if (e.getAction() == MotionEvent.ACTION_DOWN) {
mPageWidget.abortAnimation();
mPageWidget.calcCornerXY(e.getX(), e.getY());
//int temp = mCurrent!=0?mCurrent-1:0;
//获取当前页
mCurPageBitmap = pagefactory.getPage(mCurrent);
Log.d(TAG, "---当前页:mCurrentPic:"+mCurrent);
Log.d(TAG, "---当前页:路径:"+mFileList.get(mCurrent));
if (mPageWidget.DragToRight()) {
if (pagefactory.isfirstPage()){
Toast.makeText(mContext, "已经是第一页",Toast.LENGTH_SHORT).show();
return false;
}
//获取当前页坐标
mCurrent = mCurrent > 0?--mCurrent:0;
Log.d(TAG, "mCurrentPic:"+mCurrent);
mNextPageBitmap = pagefactory.prePage(mCurrent);
Log.d(TAG, "---下一页:路径:"+mFileList.get(mCurrent));
} else {
if (pagefactory.islastPage()){
Toast.makeText(mContext, "已经是最后一页",Toast.LENGTH_SHORT).show();
return false;
}
mCurrent = mCurrent < mFileList.size()-1 ?++mCurrent:mFileList.size()-1;
Log.d(TAG, "mCurrentPic:"+mCurrent);
Log.d(TAG, "---下一页:路径:"+mFileList.get(mCurrent));
mNextPageBitmap = pagefactory.nextPage(mCurrent);
}
mPageWidget.setBitmaps(mCurPageBitmap, mNextPageBitmap);
}
ret = mPageWidget.doTouchEvent(e);
return ret;
}
return false;
}
});
}
public String getSDPath(){
File sdDir = null;
boolean sdCardExist = Environment.getExternalStorageState().equals(android.os.Environment.MEDIA_MOUNTED); //判断sd卡是否存在
if(sdCardExist){
sdDir = Environment.getExternalStorageDirectory();//获取跟目录
}
return sdDir.toString();
}
/**
* 获取文件对象
* @param file
* @return
* @throws IOException
*/
public List<String> getFile(File file) throws IOException{
// Log.d(TAG, "getFile.fun..start..");
File[] fileArray =file.listFiles();
// Log.d(TAG, "getFile.fun..listFiles..");
for (File f : fileArray) {
// Log.d(TAG, "getFile.fun..ffff..");
if(f.isFile()){
// Log.d(TAG, "getFile.fun..adddd..11111..");
mFileList.add(f.getCanonicalPath());
// Log.d(TAG, "getFile.fun..adddd..");
}else{
getFile(f);
// Log.d(TAG, "getFile.run..again..");
}
}
// Log.d(TAG, "getFile.fun..finsh..");
return mFileList;
}
}
修改 BookActivity.java dirPath 路径即可
BookPageFactory.java
package com.andorid.shu.love;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.RandomAccessFile;
import java.io.UnsupportedEncodingException;
import java.nio.MappedByteBuffer;
import java.nio.channels.FileChannel;
import java.text.DecimalFormat;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.List;
import java.util.Vector;
import android.content.res.Resources;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Matrix;
import android.graphics.Paint;
import android.graphics.Paint.Align;
public class BookPageFactory {
private File book_file = null;
private MappedByteBuffer m_mbBuf = null;
private int m_mbBufLen = 0;
private int m_mbBufBegin = 50; //50
private int m_mbBufEnd = 0;
private String m_strCharsetName = "GBK";
private Bitmap m_book_bg = null;
private int mWidth;
private int mHeight;
private Vector<String> m_lines = new Vector<String>();
private int m_fontSize = 40;
private int r_fontSize = 30;
private int m_textColor = Color.BLACK;
private int m_backColor = 0xffff9e85; // 背景颜色
private int marginWidth = 15; // 左右与边缘的距离
private int marginHeight = 20; // 上下与边缘的距离
private int youmiHeight = 0;//广告条的狂度
private int mLineCount; // 每页可以显示的行数
private float mVisibleHeight; // 绘制内容的宽
private float mVisibleWidth; // 绘制内容的宽
private boolean m_isfirstPage, m_islastPage;
private int b_FontSize = 16;//底部文字大小
private int e_fontSize = 5;
private int spaceSize = 20;//行间距大小
private int curProgress = 0;//当前的进度
private String fileName = "";
// private int m_nLineSpaceing = 5;
private Paint mPaint;
private Paint bPaint;//底部文字绘制
private Paint spactPaint;//行间距绘制
private Paint titlePaint;//标题绘制
//add for 2015 03 06
private List<String> mFileList;//当前文件列表
public BookPageFactory(int w, int h,List<String> fileList) {
// TODO Auto-generated constructor stub
mWidth = w;
mHeight = h;
//add for 2015 03 04
this.mFileList = fileList;
}
//add for 2015 03 04
public Bitmap prePage(int currentNum){
this.m_islastPage = false;
if(currentNum == 0){
//currentNum = 0;
this.m_isfirstPage = true;
}else{
//currentNum--;
this.m_isfirstPage = false;
}
BitmapFactory.Options options = new BitmapFactory.Options();
options.inSampleSize = 2;//图片大小，设置越大，图片越不清晰，占用空间越小
Bitmap bitmap = BitmapFactory.decodeFile(mFileList.get(currentNum), options);
//Bitmap bitmap = BitmapFactory.decodeResource(this.mResources, mPics[currentNum]);
//图片放大至屏幕大小
bitmap = resizePic(bitmap, mWidth, mHeight);
return bitmap;
}
//add for 2015 03 04
public Bitmap nextPage(int currentNum){
this.m_isfirstPage = false;
if(currentNum >= mFileList.size()-1){
//currentNum = mPics.length-1;
this.m_islastPage = true;
}else{
//currentNum++;
this.m_islastPage = false;
}
BitmapFactory.Options options = new BitmapFactory.Options();
options.inSampleSize = 2;//图片大小，设置越大，图片越不清晰，占用空间越小
Bitmap bitmap = BitmapFactory.decodeFile(mFileList.get(currentNum), options);
//Bitmap bitmap = BitmapFactory.decodeResource(this.mResources, mPics[currentNum]);
//图片放大至屏幕大小
bitmap = resizePic(bitmap, mWidth, mHeight);
return bitmap;
}
//add for 2015 03 06
public Bitmap getPage(int currnet){
BitmapFactory.Options options = new BitmapFactory.Options();
options.inSampleSize = 2;//图片大小，设置越大，图片越不清晰，占用空间越小
Bitmap bitmap = BitmapFactory.decodeFile(mFileList.get(currnet), options);
//Bitmap bitmap = BitmapFactory.decodeResource(this.mResources, mPics[currnet]);
//图片放大至屏幕大小
bitmap = resizePic(bitmap, mWidth, mHeight);
return bitmap;
}
//add for 2015 03 06
public static Bitmap resizePic(Bitmap bitmap, int screenWidth,int screenHight) {
int w = bitmap.getWidth();
int h = bitmap.getHeight();
Matrix matrix = new Matrix();
float scale = (float) screenWidth / w;
float scale2 = (float) screenHight / h;
// scale = scale < scale2 ? scale : scale2;
matrix.postScale(scale, scale2);
Bitmap bmp = Bitmap.createBitmap(bitmap, 0, 0, w, h, matrix, true);
if (bitmap != null && !bitmap.equals(bmp) && !bitmap.isRecycled()) {
bitmap.recycle();
bitmap = null;
}
return bmp;
}
private static double round1(double v, int scale) {
if (scale < 0)
return v;
String temp = "#####0.";
for (int i = 0; i < scale; i++) {
temp += "0";
}
return Double.valueOf(new java.text.DecimalFormat(temp).format(v));
}
public void setBgBitmap(Bitmap BG) {
if (BG.getWidth() != mWidth || BG.getHeight() != mHeight)
m_book_bg = Bitmap.createScaledBitmap(BG, mWidth, mHeight, true);
else
m_book_bg = BG;
}
public boolean isfirstPage() {
return m_isfirstPage;
}
public void setIslastPage(boolean islast){
m_islastPage = islast;
}
public boolean islastPage() {
return m_islastPage;
}
public int getCurPostion() {
return m_mbBufEnd;
}
public int getCurPostionBeg(){
return m_mbBufBegin;
}
public void setBeginPos(int pos) {
m_mbBufEnd = pos;
m_mbBufBegin = pos;
}
public int getBufLen() {
return m_mbBufLen;
}
public int getCurProgress(){
return curProgress;
}
public String getOneLine() {
return m_lines.toString().substring(0, 10);
}
public void changBackGround(int color) {
mPaint.setColor(color);
}
public void setFontSize(int size) {
m_fontSize = size;
mPaint.setTextSize(size);
int totalSize = m_fontSize+spaceSize;
mLineCount = (int) (mVisibleHeight / totalSize); // 可显示的行数
}
public void setFileName(String fileName){
fileName = fileName.substring(0,fileName.indexOf("."));
this.fileName = fileName;
}
}
PageWidget.java
package com.andorid.shu.love;
import android.content.Context;
import android.graphics.Bitmap;
import android.graphics.Canvas;
import android.graphics.ColorMatrix;
import android.graphics.ColorMatrixColorFilter;
import android.graphics.Matrix;
import android.graphics.Paint;
import android.graphics.Path;
import android.graphics.PointF;
import android.graphics.Region;
import android.graphics.drawable.GradientDrawable;
import android.view.MotionEvent;
import android.view.View;
import android.widget.Scroller;
public class PageWidget extends View {
private static final String TAG = "hmg";
private int mWidth = 480;
private int mHeight = 800;
private int mCornerX = 0; // 拖拽点对应的页脚
private int mCornerY = 0;
private Path mPath0;
private Path mPath1;
Bitmap mCurPageBitmap = null; // 当前页
Bitmap mNextPageBitmap = null;
PointF mTouch = new PointF(); // 拖拽点
PointF mBezierStart1 = new PointF(); // 贝塞尔曲线起始点
PointF mBezierControl1 = new PointF(); // 贝塞尔曲线控制点
PointF mBeziervertex1 = new PointF(); // 贝塞尔曲线顶点
PointF mBezierEnd1 = new PointF(); // 贝塞尔曲线结束点
PointF mBezierStart2 = new PointF(); // 另一条贝塞尔曲线
PointF mBezierControl2 = new PointF();
PointF mBeziervertex2 = new PointF();
PointF mBezierEnd2 = new PointF();
float mMiddleX;
float mMiddleY;
float mDegrees;
float mTouchToCornerDis;
ColorMatrixColorFilter mColorMatrixFilter;
Matrix mMatrix;
float[] mMatrixArray = { 0, 0, 0, 0, 0, 0, 0, 0, 1.0f };
boolean mIsRTandLB; // 是否属于右上左下
float mMaxLength = (float) Math.hypot(mWidth, mHeight);
int[] mBackShadowColors;
int[] mFrontShadowColors;
GradientDrawable mBackShadowDrawableLR;
GradientDrawable mBackShadowDrawableRL;
GradientDrawable mFolderShadowDrawableLR;
GradientDrawable mFolderShadowDrawableRL;
GradientDrawable mFrontShadowDrawableHBT;
GradientDrawable mFrontShadowDrawableHTB;
GradientDrawable mFrontShadowDrawableVLR;
GradientDrawable mFrontShadowDrawableVRL;
Paint mPaint;
Scroller mScroller;
public PageWidget(Context context, int w, int h) {
super(context);
// TODO Auto-generated constructor stub
mWidth = w;
mHeight = h;
mPath0 = new Path();
mPath1 = new Path();
createDrawable();
mPaint = new Paint();
mPaint.setStyle(Paint.Style.FILL);
ColorMatrix cm = new ColorMatrix();
float array[] = { 0.55f, 0, 0, 0, 80.0f, 0, 0.55f, 0, 0, 80.0f, 0, 0,
0.55f, 0, 80.0f, 0, 0, 0, 0.2f, 0 };
cm.set(array);
mColorMatrixFilter = new ColorMatrixColorFilter(cm);
mMatrix = new Matrix();
mScroller = new Scroller(getContext());
mTouch.x = 0.01f; // 不让x,y为0,否则在点计算时会有问题
mTouch.y = 0.01f;
}
/**
* Author : hmg25 Version: 1.0 Description : 计算拖拽点对应的拖拽脚
*/
public void calcCornerXY(float x, float y) {
if (x <= mWidth / 2)
mCornerX = 0;
else
mCornerX = mWidth;
if (y <= mHeight / 2)
mCornerY = 0;
else
mCornerY = mHeight;
if ((mCornerX == 0 && mCornerY == mHeight)
|| (mCornerX == mWidth && mCornerY == 0))
mIsRTandLB = true;
else
mIsRTandLB = false;
}
public boolean doTouchEvent(MotionEvent event) {
// TODO Auto-generated method stub
if (event.getAction() == MotionEvent.ACTION_MOVE) {
mTouch.x = event.getX();
mTouch.y = event.getY();
this.postInvalidate();
}
if (event.getAction() == MotionEvent.ACTION_DOWN) {
mTouch.x = event.getX();
mTouch.y = event.getY();
// calcCornerXY(mTouch.x, mTouch.y);
// this.postInvalidate();
}
if (event.getAction() == MotionEvent.ACTION_UP) {
if (canDragOver()) {
startAnimation(1200);
} else {
mTouch.x = mCornerX - 0.09f;
mTouch.y = mCornerY - 0.09f;
}
this.postInvalidate();
}
// return super.onTouchEvent(event);
return true;
}
/**
* Author : hmg25 Version: 1.0 Description : 求解直线P1P2和直线P3P4的交点坐标
*/
public PointF getCross(PointF P1, PointF P2, PointF P3, PointF P4) {
PointF CrossP = new PointF();
// 二元函数通式： y=ax+b
float a1 = (P2.y - P1.y) / (P2.x - P1.x);
float b1 = ((P1.x * P2.y) - (P2.x * P1.y)) / (P1.x - P2.x);
float a2 = (P4.y - P3.y) / (P4.x - P3.x);
float b2 = ((P3.x * P4.y) - (P4.x * P3.y)) / (P3.x - P4.x);
CrossP.x = (b2 - b1) / (a1 - a2);
CrossP.y = a1 * CrossP.x + b1;
return CrossP;
}
private void calcPoints() {
mMiddleX = (mTouch.x + mCornerX) / 2;
mMiddleY = (mTouch.y + mCornerY) / 2;
mBezierControl1.x = mMiddleX - (mCornerY - mMiddleY)
* (mCornerY - mMiddleY) / (mCornerX - mMiddleX);
mBezierControl1.y = mCornerY;
mBezierControl2.x = mCornerX;
mBezierControl2.y = mMiddleY - (mCornerX - mMiddleX)
* (mCornerX - mMiddleX) / (mCornerY - mMiddleY);
// Log.i("hmg", "mTouchX " + mTouch.x + " mTouchY " + mTouch.y);
// Log.i("hmg", "mBezierControl1.x " + mBezierControl1.x
// + " mBezierControl1.y " + mBezierControl1.y);
// Log.i("hmg", "mBezierControl2.x " + mBezierControl2.x
// + " mBezierControl2.y " + mBezierControl2.y);
mBezierStart1.x = mBezierControl1.x - (mCornerX - mBezierControl1.x)
/ 2;
mBezierStart1.y = mCornerY;
// 当mBezierStart1.x < 0或者mBezierStart1.x > 480时
// 如果继续翻页，会出现BUG故在此限制
if (mTouch.x > 0 && mTouch.x < mWidth) {
if (mBezierStart1.x < 0 || mBezierStart1.x > mWidth) {
if (mBezierStart1.x < 0)
mBezierStart1.x = mWidth - mBezierStart1.x;
float f1 = Math.abs(mCornerX - mTouch.x);
float f2 = mWidth * f1 / mBezierStart1.x;
mTouch.x = Math.abs(mCornerX - f2);
float f3 = Math.abs(mCornerX - mTouch.x)
* Math.abs(mCornerY - mTouch.y) / f1;
mTouch.y = Math.abs(mCornerY - f3);
mMiddleX = (mTouch.x + mCornerX) / 2;
mMiddleY = (mTouch.y + mCornerY) / 2;
mBezierControl1.x = mMiddleX - (mCornerY - mMiddleY)
* (mCornerY - mMiddleY) / (mCornerX - mMiddleX);
mBezierControl1.y = mCornerY;
mBezierControl2.x = mCornerX;
mBezierControl2.y = mMiddleY - (mCornerX - mMiddleX)
* (mCornerX - mMiddleX) / (mCornerY - mMiddleY);
// Log.i("hmg", "mTouchX --> " + mTouch.x + " mTouchY--> "
// + mTouch.y);
// Log.i("hmg", "mBezierControl1.x-- " + mBezierControl1.x
// + " mBezierControl1.y -- " + mBezierControl1.y);
// Log.i("hmg", "mBezierControl2.x -- " + mBezierControl2.x
// + " mBezierControl2.y -- " + mBezierControl2.y);
mBezierStart1.x = mBezierControl1.x
- (mCornerX - mBezierControl1.x) / 2;
}
}
mBezierStart2.x = mCornerX;
mBezierStart2.y = mBezierControl2.y - (mCornerY - mBezierControl2.y)
/ 2;
mTouchToCornerDis = (float) Math.hypot((mTouch.x - mCornerX),
(mTouch.y - mCornerY));
mBezierEnd1 = getCross(mTouch, mBezierControl1, mBezierStart1,
mBezierStart2);
mBezierEnd2 = getCross(mTouch, mBezierControl2, mBezierStart1,
mBezierStart2);
// Log.i("hmg", "mBezierEnd1.x " + mBezierEnd1.x + " mBezierEnd1.y "
// + mBezierEnd1.y);
// Log.i("hmg", "mBezierEnd2.x " + mBezierEnd2.x + " mBezierEnd2.y "
// + mBezierEnd2.y);
/*
* mBeziervertex1.x 推导
* ((mBezierStart1.x+mBezierEnd1.x)/2+mBezierControl1.x)/2 化简等价于
* (mBezierStart1.x+ 2*mBezierControl1.x+mBezierEnd1.x) / 4
*/
mBeziervertex1.x = (mBezierStart1.x + 2 * mBezierControl1.x + mBezierEnd1.x) / 4;
mBeziervertex1.y = (2 * mBezierControl1.y + mBezierStart1.y + mBezierEnd1.y) / 4;
mBeziervertex2.x = (mBezierStart2.x + 2 * mBezierControl2.x + mBezierEnd2.x) / 4;
mBeziervertex2.y = (2 * mBezierControl2.y + mBezierStart2.y + mBezierEnd2.y) / 4;
}
private void drawCurrentPageArea(Canvas canvas, Bitmap bitmap, Path path) {
mPath0.reset();
mPath0.moveTo(mBezierStart1.x, mBezierStart1.y);
mPath0.quadTo(mBezierControl1.x, mBezierControl1.y, mBezierEnd1.x,
mBezierEnd1.y);
mPath0.lineTo(mTouch.x, mTouch.y);
mPath0.lineTo(mBezierEnd2.x, mBezierEnd2.y);
mPath0.quadTo(mBezierControl2.x, mBezierControl2.y, mBezierStart2.x,
mBezierStart2.y);
mPath0.lineTo(mCornerX, mCornerY);
mPath0.close();
canvas.save();
canvas.clipPath(path, Region.Op.XOR);
canvas.drawBitmap(bitmap, 0, 0, null);
canvas.restore();
}
private void drawNextPageAreaAndShadow(Canvas canvas, Bitmap bitmap) {
mPath1.reset();
mPath1.moveTo(mBezierStart1.x, mBezierStart1.y);
mPath1.lineTo(mBeziervertex1.x, mBeziervertex1.y);
mPath1.lineTo(mBeziervertex2.x, mBeziervertex2.y);
mPath1.lineTo(mBezierStart2.x, mBezierStart2.y);
mPath1.lineTo(mCornerX, mCornerY);
mPath1.close();
mDegrees = (float) Math.toDegrees(Math.atan2(mBezierControl1.x
- mCornerX, mBezierControl2.y - mCornerY));
int leftx;
int rightx;
GradientDrawable mBackShadowDrawable;
if (mIsRTandLB) {
leftx = (int) (mBezierStart1.x);
rightx = (int) (mBezierStart1.x + mTouchToCornerDis / 4);
mBackShadowDrawable = mBackShadowDrawableLR;
} else {
leftx = (int) (mBezierStart1.x - mTouchToCornerDis / 4);
rightx = (int) mBezierStart1.x;
mBackShadowDrawable = mBackShadowDrawableRL;
}
canvas.save();
canvas.clipPath(mPath0);
canvas.clipPath(mPath1, Region.Op.INTERSECT);
canvas.drawBitmap(bitmap, 0, 0, null);
canvas.rotate(mDegrees, mBezierStart1.x, mBezierStart1.y);
mBackShadowDrawable.setBounds(leftx, (int) mBezierStart1.y, rightx,
(int) (mMaxLength + mBezierStart1.y));
mBackShadowDrawable.draw(canvas);
canvas.restore();
}
public void setBitmaps(Bitmap bm1, Bitmap bm2) {
mCurPageBitmap = bm1;
mNextPageBitmap = bm2;
}
public void setScreen(int w, int h) {
mWidth = w;
mHeight = h;
}
@Override
protected void onDraw(Canvas canvas) {
canvas.drawColor(0xFFAAAAAA);
calcPoints();
drawCurrentPageArea(canvas, mCurPageBitmap, mPath0);
drawNextPageAreaAndShadow(canvas, mNextPageBitmap);
drawCurrentPageShadow(canvas);
drawCurrentBackArea(canvas, mCurPageBitmap);
}
/**
* Author : hmg25 Version: 1.0 Description : 创建阴影的GradientDrawable
*/
private void createDrawable() {
int[] color = { 0x333333, 0xb0333333 };
mFolderShadowDrawableRL = new GradientDrawable(
GradientDrawable.Orientation.RIGHT_LEFT, color);
mFolderShadowDrawableRL
.setGradientType(GradientDrawable.LINEAR_GRADIENT);
mFolderShadowDrawableLR = new GradientDrawable(
GradientDrawable.Orientation.LEFT_RIGHT, color);
mFolderShadowDrawableLR
.setGradientType(GradientDrawable.LINEAR_GRADIENT);
mBackShadowColors = new int[] { 0xff111111, 0x111111 };
mBackShadowDrawableRL = new GradientDrawable(
GradientDrawable.Orientation.RIGHT_LEFT, mBackShadowColors);
mBackShadowDrawableRL.setGradientType(GradientDrawable.LINEAR_GRADIENT);
mBackShadowDrawableLR = new GradientDrawable(
GradientDrawable.Orientation.LEFT_RIGHT, mBackShadowColors);
mBackShadowDrawableLR.setGradientType(GradientDrawable.LINEAR_GRADIENT);
mFrontShadowColors = new int[] { 0x80111111, 0x111111 };
mFrontShadowDrawableVLR = new GradientDrawable(
GradientDrawable.Orientation.LEFT_RIGHT, mFrontShadowColors);
mFrontShadowDrawableVLR
.setGradientType(GradientDrawable.LINEAR_GRADIENT);
mFrontShadowDrawableVRL = new GradientDrawable(
GradientDrawable.Orientation.RIGHT_LEFT, mFrontShadowColors);
mFrontShadowDrawableVRL
.setGradientType(GradientDrawable.LINEAR_GRADIENT);
mFrontShadowDrawableHTB = new GradientDrawable(
GradientDrawable.Orientation.TOP_BOTTOM, mFrontShadowColors);
mFrontShadowDrawableHTB
.setGradientType(GradientDrawable.LINEAR_GRADIENT);
mFrontShadowDrawableHBT = new GradientDrawable(
GradientDrawable.Orientation.BOTTOM_TOP, mFrontShadowColors);
mFrontShadowDrawableHBT
.setGradientType(GradientDrawable.LINEAR_GRADIENT);
}
/**
* Author : hmg25 Version: 1.0 Description : 绘制翻起页的阴影
*/
public void drawCurrentPageShadow(Canvas canvas) {
double degree;
if (mIsRTandLB) {
degree = Math.PI
/ 4
- Math.atan2(mBezierControl1.y - mTouch.y, mTouch.x
- mBezierControl1.x);
} else {
degree = Math.PI
/ 4
- Math.atan2(mTouch.y - mBezierControl1.y, mTouch.x
- mBezierControl1.x);
}
// 翻起页阴影顶点与touch点的距离
double d1 = (float) 25 * 1.414 * Math.cos(degree);
double d2 = (float) 25 * 1.414 * Math.sin(degree);
float x = (float) (mTouch.x + d1);
float y;
if (mIsRTandLB) {
y = (float) (mTouch.y + d2);
} else {
y = (float) (mTouch.y - d2);
}
mPath1.reset();
mPath1.moveTo(x, y);
mPath1.lineTo(mTouch.x, mTouch.y);
mPath1.lineTo(mBezierControl1.x, mBezierControl1.y);
mPath1.lineTo(mBezierStart1.x, mBezierStart1.y);
mPath1.close();
float rotateDegrees;
canvas.save();
canvas.clipPath(mPath0, Region.Op.XOR);
canvas.clipPath(mPath1, Region.Op.INTERSECT);
int leftx;
int rightx;
GradientDrawable mCurrentPageShadow;
if (mIsRTandLB) {
leftx = (int) (mBezierControl1.x);
rightx = (int) mBezierControl1.x + 25;
mCurrentPageShadow = mFrontShadowDrawableVLR;
} else {
leftx = (int) (mBezierControl1.x - 25);
rightx = (int) mBezierControl1.x + 1;
mCurrentPageShadow = mFrontShadowDrawableVRL;
}
rotateDegrees = (float) Math.toDegrees(Math.atan2(mTouch.x
- mBezierControl1.x, mBezierControl1.y - mTouch.y));
canvas.rotate(rotateDegrees, mBezierControl1.x, mBezierControl1.y);
mCurrentPageShadow.setBounds(leftx,
(int) (mBezierControl1.y - mMaxLength), rightx,
(int) (mBezierControl1.y));
mCurrentPageShadow.draw(canvas);
canvas.restore();
mPath1.reset();
mPath1.moveTo(x, y);
mPath1.lineTo(mTouch.x, mTouch.y);
mPath1.lineTo(mBezierControl2.x, mBezierControl2.y);
mPath1.lineTo(mBezierStart2.x, mBezierStart2.y);
mPath1.close();
canvas.save();
canvas.clipPath(mPath0, Region.Op.XOR);
canvas.clipPath(mPath1, Region.Op.INTERSECT);
if (mIsRTandLB) {
leftx = (int) (mBezierControl2.y);
rightx = (int) (mBezierControl2.y + 25);
mCurrentPageShadow = mFrontShadowDrawableHTB;
} else {
leftx = (int) (mBezierControl2.y - 25);
rightx = (int) (mBezierControl2.y + 1);
mCurrentPageShadow = mFrontShadowDrawableHBT;
}
rotateDegrees = (float) Math.toDegrees(Math.atan2(mBezierControl2.y
- mTouch.y, mBezierControl2.x - mTouch.x));
canvas.rotate(rotateDegrees, mBezierControl2.x, mBezierControl2.y);
float temp;
if (mBezierControl2.y < 0)
temp = mBezierControl2.y - mHeight;
else
temp = mBezierControl2.y;
int hmg = (int) Math.hypot(mBezierControl2.x, temp);
if (hmg > mMaxLength)
mCurrentPageShadow
.setBounds((int) (mBezierControl2.x - 25) - hmg, leftx,
(int) (mBezierControl2.x + mMaxLength) - hmg,
rightx);
else
mCurrentPageShadow.setBounds(
(int) (mBezierControl2.x - mMaxLength), leftx,
(int) (mBezierControl2.x), rightx);
// Log.i("hmg", "mBezierControl2.x " + mBezierControl2.x
// + " mBezierControl2.y " + mBezierControl2.y);
mCurrentPageShadow.draw(canvas);
canvas.restore();
}
/**
* Author : hmg25 Version: 1.0 Description : 绘制翻起页背面
*/
private void drawCurrentBackArea(Canvas canvas, Bitmap bitmap) {
int i = (int) (mBezierStart1.x + mBezierControl1.x) / 2;
float f1 = Math.abs(i - mBezierControl1.x);
int i1 = (int) (mBezierStart2.y + mBezierControl2.y) / 2;
float f2 = Math.abs(i1 - mBezierControl2.y);
float f3 = Math.min(f1, f2);
mPath1.reset();
mPath1.moveTo(mBeziervertex2.x, mBeziervertex2.y);
mPath1.lineTo(mBeziervertex1.x, mBeziervertex1.y);
mPath1.lineTo(mBezierEnd1.x, mBezierEnd1.y);
mPath1.lineTo(mTouch.x, mTouch.y);
mPath1.lineTo(mBezierEnd2.x, mBezierEnd2.y);
mPath1.close();
GradientDrawable mFolderShadowDrawable;
int left;
int right;
if (mIsRTandLB) {
left = (int) (mBezierStart1.x - 1);
right = (int) (mBezierStart1.x + f3 + 1);
mFolderShadowDrawable = mFolderShadowDrawableLR;
} else {
left = (int) (mBezierStart1.x - f3 - 1);
right = (int) (mBezierStart1.x + 1);
mFolderShadowDrawable = mFolderShadowDrawableRL;
}
canvas.save();
canvas.clipPath(mPath0);
canvas.clipPath(mPath1, Region.Op.INTERSECT);
mPaint.setColorFilter(mColorMatrixFilter);
float dis = (float) Math.hypot(mCornerX - mBezierControl1.x,
mBezierControl2.y - mCornerY);
float f8 = (mCornerX - mBezierControl1.x) / dis;
float f9 = (mBezierControl2.y - mCornerY) / dis;
mMatrixArray[0] = 1 - 2 * f9 * f9;
mMatrixArray[1] = 2 * f8 * f9;
mMatrixArray[3] = mMatrixArray[1];
mMatrixArray[4] = 1 - 2 * f8 * f8;
mMatrix.reset();
mMatrix.setValues(mMatrixArray);
mMatrix.preTranslate(-mBezierControl1.x, -mBezierControl1.y);
mMatrix.postTranslate(mBezierControl1.x, mBezierControl1.y);
canvas.drawBitmap(bitmap, mMatrix, mPaint);
// canvas.drawBitmap(bitmap, mMatrix, null);
mPaint.setColorFilter(null);
canvas.rotate(mDegrees, mBezierStart1.x, mBezierStart1.y);
mFolderShadowDrawable.setBounds(left, (int) mBezierStart1.y, right,
(int) (mBezierStart1.y + mMaxLength));
mFolderShadowDrawable.draw(canvas);
canvas.restore();
}
public void computeScroll() {
super.computeScroll();
if (mScroller.computeScrollOffset()) {
float x = mScroller.getCurrX();
float y = mScroller.getCurrY();
mTouch.x = x;
mTouch.y = y;
postInvalidate();
}
}
private void startAnimation(int delayMillis) {
int dx, dy;
// dx 水平方向滑动的距离，负值会使滚动向左滚动
// dy 垂直方向滑动的距离，负值会使滚动向上滚动
if (mCornerX > 0) {
dx = -(int) (mWidth + mTouch.x);
} else {
dx = (int) (mWidth - mTouch.x + mWidth);
}
if (mCornerY > 0) {
dy = (int) (mHeight - mTouch.y);
} else {
dy = (int) (1 - mTouch.y); // 防止mTouch.y最终变为0
}
mScroller.startScroll((int) mTouch.x, (int) mTouch.y, dx, dy,
delayMillis);
}
public void abortAnimation() {
if (!mScroller.isFinished()) {
mScroller.abortAnimation();
}
}
public boolean canDragOver() {
if (mTouchToCornerDis > mWidth / 10)
return true;
return false;
}
/**
* Author : hmg25 Version: 1.0 Description : 是否从左边翻向右边
*/
public boolean DragToRight() {
if (mCornerX > 0)
return false;
return true;
}
}
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原文地址：http://my.oschina.net/u/1866821/blog/383481
