package com.lfk.drawapictiure;
import android.content.ContentResolver;
import android.content.Context;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.Canvas;
import android.graphics.Paint;
import android.graphics.Path;
import android.graphics.PorterDuff;
import android.graphics.PorterDuffXfermode;
import android.graphics.RectF;
import android.net.Uri;
import android.os.Handler;
import android.os.Message;
import android.support.annotation.NonNull;
import android.util.AttributeSet;
import android.util.Log;
import android.view.Gravity;
import android.view.LayoutInflater;
import android.view.MotionEvent;
import android.view.View;
import android.view.ViewGroup;
import android.view.WindowManager;
import android.widget.TextView;
import android.widget.Toast;
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;
import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.nio.charset.Charset;
import java.security.InvalidKeyException;
import java.security.NoSuchAlgorithmException;
import java.security.spec.InvalidKeySpecException;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Date;
import javax.crypto.BadPaddingException;
import javax.crypto.Cipher;
import javax.crypto.IllegalBlockSizeException;
import javax.crypto.NoSuchPaddingException;
import javax.crypto.SecretKey;
import javax.crypto.SecretKeyFactory;
import javax.crypto.spec.DESKeySpec;
class PaintView extends View {
// drawing board
private Bitmap mBitmap;
// if you set a picture in you will use it
private Bitmap mBitmapInit;
private int mBitmapBackGround = R.drawable.whitbackground;
private Canvas mCanvas;
private Path mPath;
private Paint mBitmapPaint;
private Paint mEraserPaint;
private Paint mPaint;
// width of screen
private int width;
// height of screen
private int height;
private Context context;
// pass judgement on paint/eraser
private boolean IsPaint = true;
// drawing x,y
private float mX, mY;
// judge your fingers' tremble
private static final float TOUCH_TOLERANCE = 4;
// judge long pressed
private static final long TOUCH_LONG_PRESSED = 500;
private boolean IsRecordPath = true;
// private PathNode pathNode;
private boolean mIsLongPressed;
private boolean IsShowing = false;
private boolean IsFirstTime = true;
private long Touch_Down_Time;
private long Touch_Up_Time;
private OnPathListener listener;
private static final int CHOOSEPATH = 0;
private static final int INDIVIDE = 1;
private boolean ReDoOrUnDoFlag = false;
private PathNode pathNode;
private ArrayList<PathNode.Node> ReDoNodes = new ArrayList<>();
public PaintView(Context context,AttributeSet attrs) {
super(context,attrs);
this.context = context;
mPaint = new Paint();
mEraserPaint = new Paint();
Init_Paint(UserInfo.PaintColor,UserInfo.PaintWidth);
Init_Eraser(UserInfo.EraserWidth);
WindowManager manager = (WindowManager)context.getSystemService(Context.WINDOW_SERVICE);
width = manager.getDefaultDisplay().getWidth();
height = manager.getDefaultDisplay().getHeight();
mBitmap = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888);
mCanvas = new Canvas(mBitmap);
mPath = new Path();
mBitmapPaint = new Paint(Paint.DITHER_FLAG);
}
public PaintView(Context context) {
super(context);
this.context = context;
mPaint = new Paint();
mEraserPaint = new Paint();
Init_Paint(UserInfo.PaintColor, UserInfo.PaintWidth);
Init_Eraser(UserInfo.EraserWidth);
WindowManager manager = (WindowManager)context.getSystemService(Context.WINDOW_SERVICE);
width = manager.getDefaultDisplay().getWidth();
height = manager.getDefaultDisplay().getHeight();
// mBitmap = BitmapFactory.decodeResource(context.getResources(), mBitmapBackGround).
// copy(Bitmap.Config.ARGB_8888, false);
// mBitmap = Bitmap.createScaledBitmap(mBitmap,width,height,false);
mBitmap = Bitmap.createBitmap(width,height,Bitmap.Config.ARGB_8888);
mCanvas = new Canvas(mBitmap);
mPath = new Path();
mBitmapPaint = new Paint(Paint.DITHER_FLAG);
}
// init paint
private void Init_Paint(int color ,int width){
mPaint.setAntiAlias(true);
mPaint.setDither(true);
mPaint.setColor(color);
mPaint.setStyle(Paint.Style.STROKE);
mPaint.setStrokeJoin(Paint.Join.ROUND);
mPaint.setStrokeCap(Paint.Cap.ROUND);
mPaint.setStrokeWidth(width);
}
// init eraser
private void Init_Eraser(int width){
mEraserPaint.setAntiAlias(true);
mEraserPaint.setDither(true);
mEraserPaint.setColor(0xFF000000);
mEraserPaint.setStrokeWidth(width);
mEraserPaint.setStyle(Paint.Style.STROKE);
mEraserPaint.setStrokeJoin(Paint.Join.ROUND);
mEraserPaint.setStrokeCap(Paint.Cap.SQUARE);
// The most important
mEraserPaint.setXfermode(new PorterDuffXfermode(PorterDuff.Mode.DST_OUT));
}
// while size is changed
@Override
protected void onSizeChanged(int w, int h, int oldw, int oldh) {
super.onSizeChanged(w, h, oldw, oldh);
if(IsPaint)
Init_Paint(UserInfo.PaintColor, UserInfo.PaintWidth);
else
Init_Eraser(UserInfo.EraserWidth);
}
@Override
protected void onDraw(Canvas canvas) {
super.onDraw(canvas);
canvas.drawBitmap(mBitmap, 0, 0, mBitmapPaint);
if(IsPaint)
canvas.drawPath(mPath, mPaint);
else
canvas.drawPath(mPath, mEraserPaint);
}
private void Touch_Down(float x, float y) {
mPath.reset();
mPath.moveTo(x, y);
mX = x;
mY = y;
if(IsRecordPath) {
listener.addNodeToPath(x, y, MotionEvent.ACTION_DOWN, IsPaint);
}
}
private void Touch_Move(float x, float y) {
float dx = Math.abs(x - mX);
float dy = Math.abs(y - mY);
if (dx >= TOUCH_TOLERANCE || dy >= TOUCH_TOLERANCE) {
mPath.quadTo(mX, mY, (x + mX) / 2, (y + mY) / 2);
mX = x;
mY = y;
if(IsRecordPath) {
listener.addNodeToPath(x, y, MotionEvent.ACTION_MOVE, IsPaint);
}
}
}
private void Touch_Up(Paint paint){
mPath.lineTo(mX, mY);
mCanvas.drawPath(mPath, paint);
mPath.reset();
if(IsRecordPath) {
listener.addNodeToPath(mX, mY, MotionEvent.ACTION_UP, IsPaint);
}
}
public void setColor(int color) {
showCustomToast("已选择颜色" + colorToHexString(color));
mPaint.setColor(color);
}
public void setPenWidth(int width) {
showCustomToast("设定笔粗为：" + width);
mPaint.setStrokeWidth(width);
}
public void save(){
mCanvas.save();
}
public void setIsPaint(boolean isPaint) {
IsPaint = isPaint;
}
public void setOnPathListener(OnPathListener listener) {
this.listener = listener;
}
public void setmEraserPaint(int width){
showCustomToast("设定橡皮粗为："+width);
mEraserPaint.setStrokeWidth(width);
}
public void setIsRecordPath(boolean isRecordPath,PathNode pathNode) {
this.pathNode = pathNode;
IsRecordPath = isRecordPath;
}
public void setIsRecordPath(boolean isRecordPath) {
IsRecordPath = isRecordPath;
}
public boolean isShowing() {
return IsShowing;
}
private static String colorToHexString(int color) {
return String.format("#%06X", 0xFFFFFFFF & color);
}
// switch eraser/paint
public void Eraser(){
showCustomToast("切换为橡皮");
IsPaint = false;
Init_Eraser(UserInfo.EraserWidth);
}
public void Paint(){
showCustomToast("切换为铅笔");
IsPaint = true;
Init_Paint(UserInfo.PaintColor, UserInfo.PaintWidth);
}
public Paint getmEraserPaint() {
return mEraserPaint;
}
public Paint getmPaint() {
return mPaint;
}
/**
* @author lfk_dsk@hotmail.com
* clean the canvas
* */
public void clean() {
mBitmap = Bitmap.createBitmap(width,height,Bitmap.Config.ARGB_8888);
mCanvas.setBitmap(mBitmap);
try {
Message msg = new Message();
msg.obj = PaintView.this;
msg.what = INDIVIDE;
handler.sendMessage(msg);
Thread.sleep(0);
} catch (InterruptedException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
IsFirstTime = true;
}
/**
* @author lfk_dsk@hotmail.com
* @param uri get the uri of a picture
* */
public void setmBitmap(Uri uri){
Log.e("图片路径", String.valueOf(uri));
ContentResolver cr = context.getContentResolver();
try {
mBitmapInit = BitmapFactory.decodeStream(cr.openInputStream(uri));
drawBitmapToCanvas(mBitmapInit);
} catch (FileNotFoundException e) {
e.printStackTrace();
}
invalidate();
}
private void drawBitmapToCanvas(Bitmap bitmap){
if(bitmap.getHeight() > height || bitmap.getWidth() > width){
RectF rectF = new RectF(0,0,width,height);
mCanvas.drawBitmap(bitmap, null, rectF, mBitmapPaint);
}else {
mCanvas.drawBitmap(bitmap, 0, 0, mBitmapPaint);
}
}
/**
* @author lfk_dsk@hotmail.com
* @param file Pictures' file
* */
public void BitmapToPicture(File file){
FileOutputStream fileOutputStream;
try {
SimpleDateFormat formatter = new SimpleDateFormat("yyyy-MM-dd-HH-mm-ss");
Date now = new Date();
File tempfile = new File(file+"/"+formatter.format(now)+".jpg");
fileOutputStream = new FileOutputStream(tempfile);
Bitmap mBitmapbg = BitmapFactory.decodeResource(context.getResources(), mBitmapBackGround).
copy(Bitmap.Config.ARGB_8888, false);
mBitmapbg = Bitmap.createScaledBitmap(mBitmapbg,width,height,false);
if(mBitmapInit != null){
mBitmapbg = toConformBitmap(mBitmapbg,mBitmapInit);
mBitmapbg = toConformBitmap(mBitmapbg,mBitmap);
}else {
mBitmapbg = toConformBitmap(mBitmapbg,mBitmap);
}
mBitmapbg.compress(Bitmap.CompressFormat.JPEG, 100, fileOutputStream);
showCustomToast(tempfile.getName() + "已保存");
} catch (FileNotFoundException e) {
e.printStackTrace();
}
}
public void PathNodeToJson(PathNode pathNode,File file){
ArrayList<PathNode.Node> arrayList = pathNode.getPathList();
String json = "[";
for(int i = 0;i < arrayList.size();i++){
PathNode.Node node = arrayList.get(i);
json += "{"+"\""+"x"+"\""+":"+node.x+"," +
"\""+"y"+"\""+":"+node.y+","+
"\""+"PenColor"+"\""+":"+node.PenColor+","+
"\""+"PenWidth"+"\""+":"+node.PenWidth+","+
"\""+"EraserWidth"+"\""+":"+node.EraserWidth+","+
"\""+"TouchEvent"+"\""+":"+node.TouchEvent+","+
"\""+"IsPaint"+"\""+":"+"\""+node.IsPaint+"\""+","+
"\""+"time"+"\""+":"+node.time+
"},";
}
json = json.substring(0,json.length()-1);
json += "]";
try {
json = enCrypto(json, "lfk_dsk@hotmail.com");
} catch (InvalidKeySpecException | InvalidKeyException | IllegalBlockSizeException | BadPaddingException | NoSuchPaddingException e) {
e.printStackTrace();
}
SimpleDateFormat formatter = new SimpleDateFormat("yyyy-MM-dd-HH-mm-ss");
Date now = new Date();
File tempfile = new File(file+"/"+formatter.format(now)+".lfk");
try {
FileOutputStream fileOutputStream = new FileOutputStream(tempfile);
byte[] bytes = json.getBytes();
fileOutputStream.write(bytes);
fileOutputStream.close();
showCustomToast(tempfile.getName() + "已保存");
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
}
private Bitmap toConformBitmap(Bitmap background, Bitmap foreground) {
if( background == null ) {
return null;
}
int bgWidth = background.getWidth();
int bgHeight = background.getHeight();
Bitmap bitmap = Bitmap.createBitmap(bgWidth, bgHeight, Bitmap.Config.ARGB_8888);
Canvas cv = new Canvas(bitmap);
cv.drawBitmap(background, 0, 0, null);//在 0，0坐标开始画入bg
cv.drawBitmap(foreground, 0, 0, null);//在 0，0坐标开始画入fg ，可以从任意位置画入
cv.save(Canvas.ALL_SAVE_FLAG);//保存
cv.restore();//存储
return bitmap;
}
public void clearReUnList(){
ReDoNodes.clear();
mBitmapInit = null;
}
public void JsonToPathNodeToHandle(Uri uri){
Message message = new Message();
message.obj = uri.getPath();
message.what = CHOOSEPATH;
handler.sendMessage(message);
}
/**
* @author lfk_dsk@hotmail.com
* @param file the file of .lfk
* */
private void JsonToPathNode(String file){
String res = "";
ArrayList<PathNode.Node> arrayList = new ArrayList<>();
try {
Log.e("绝对路径",file);
FileInputStream in = new FileInputStream(file);
ByteArrayOutputStream bufferOut = new ByteArrayOutputStream();
byte[] buffer = new byte[1024];
for(int i = in.read(buffer, 0, buffer.length); i > 0 ; i = in.read(buffer, 0, buffer.length)) {
bufferOut.write(buffer, 0, i);
}
res = new String(bufferOut.toByteArray(), Charset.forName("utf-8"));
} catch (IOException e) {
e.printStackTrace();
}
try {
res = deCrypto(res, "lfk_dsk@hotmail.com");
} catch (InvalidKeyException | IllegalBlockSizeException | BadPaddingException | NoSuchPaddingException | InvalidKeySpecException e) {
e.printStackTrace();
}
try {
JSONArray jsonArray = new JSONArray(res);
for(int i = 0;i < jsonArray.length();i++){
JSONObject jsonObject = new JSONObject(jsonArray.getString(i));
PathNode.Node node = new PathNode().NewAnode();
// dp
node.x = jsonObject.getInt("x");
node.y = jsonObject.getInt("y");
node.TouchEvent = jsonObject.getInt("TouchEvent");
node.PenWidth = jsonObject.getInt("PenWidth");
node.PenColor = jsonObject.getInt("PenColor");
node.EraserWidth = jsonObject.getInt("EraserWidth");
node.IsPaint = jsonObject.getBoolean("IsPaint");
node.time = jsonObject.getLong("time");
arrayList.add(node);
}
} catch (JSONException e) {
e.printStackTrace();
}
pathNode.setPathList(arrayList);
}
public int px2dip(float pxValue) {
final float scale = this.getResources().getDisplayMetrics().density;
return (int) (pxValue / scale + 0.5f);
}
public int dip2px(float dpValue) {
final float scale = this.getResources().getDisplayMetrics().density;
return (int) (dpValue * scale + 0.5f);
}
@Override
public boolean onTouchEvent(@NonNull MotionEvent event) {
if(!isShowing()) {
float x = event.getX();
float y = event.getY();
switch (event.getAction()) {
case MotionEvent.ACTION_DOWN:
Touch_Down(x, y);
invalidate();
break;
case MotionEvent.ACTION_MOVE:
Touch_Move(x, y);
invalidate();
break;
case MotionEvent.ACTION_UP:
if (IsPaint) {
Touch_Up(mPaint);
} else {
Touch_Up(mEraserPaint);
}
invalidate();
break;
}
}
return true;
}
public void preview(ArrayList<PathNode.Node> arrayList) {
IsRecordPath = false;
PreviewThread previewThread = new PreviewThread(this, arrayList);
Thread thread = new Thread(previewThread);
thread.start();
}
private Handler handler=new Handler(){
@Override
public void handleMessage(Message msg) {
switch (msg.what){
case INDIVIDE:
((View) msg.obj).invalidate();
break;
case CHOOSEPATH:
JsonToPathNode(msg.obj.toString());
break;
}
super.handleMessage(msg);
}
};
public void showCustomToast(String toast) {
LayoutInflater inflater = LayoutInflater.from(context);
View view = inflater.inflate(R.layout.toast_item, (ViewGroup)findViewById(R.id.toast_item));
TextView text = (TextView) view.findViewById(R.id.toast_text);
text.setText(toast);
Toast tempToast = new Toast(context);
tempToast.setGravity(Gravity.CENTER_HORIZONTAL | Gravity.CENTER, 0, 0);
tempToast.setDuration(Toast.LENGTH_SHORT);
tempToast.setView(view);
tempToast.show();
}
class PreviewThread implements Runnable{
private long time;
private ArrayList<PathNode.Node> nodes;
private View view;
public PreviewThread(View view, ArrayList<PathNode.Node> arrayList) {
this.view = view;
this.nodes = arrayList;
}
public void run() {
time = 0;
IsShowing = true;
clean();
if(mBitmapInit != null){
drawBitmapToCanvas(mBitmapInit);
}
for(int i = 0 ;i < nodes.size();i++) {
PathNode.Node node = nodes.get(i);
float x = dip2px(node.x);
float y = dip2px(node.y);
Log.e("pre"+x,"pre"+y);
if(i < nodes.size() - 1) {
time = nodes.get(i+1).time - node.time;
}
IsPaint = node.IsPaint;
if(node.IsPaint){
UserInfo.PaintColor = node.PenColor;
UserInfo.PaintWidth = node.PenWidth;
Init_Paint(node.PenColor,node.PenWidth);
}else {
UserInfo.EraserWidth = node.EraserWidth;
Init_Eraser(node.EraserWidth);
}
switch (node.TouchEvent) {
case MotionEvent.ACTION_DOWN:
Touch_Down(x,y);
break;
case MotionEvent.ACTION_MOVE:
Touch_Move(x,y);
break;
case MotionEvent.ACTION_UP:
if(node.IsPaint){
Touch_Up(mPaint);
}else {
Touch_Up(mEraserPaint);
}
break;
}
Message msg = new Message();
msg.obj = view;
msg.what = INDIVIDE;
handler.sendMessage(msg);
if(!ReDoOrUnDoFlag) {
try {
Thread.sleep(time);
} catch (InterruptedException e) {
e.printStackTrace();
}
}
}
ReDoOrUnDoFlag = false;
IsShowing = false;
IsRecordPath = true;
}
}
/**
* 加密（使用DES算法）
*
* @param txt
* 需要加密的文本
* @param key
* 密钥
* @return 成功加密的文本
* @throws InvalidKeySpecException
* @throws InvalidKeyException
* @throws NoSuchPaddingException
* @throws IllegalBlockSizeException
* @throws BadPaddingException
*/
private static String enCrypto(String txt, String key)
throws InvalidKeySpecException, InvalidKeyException,
NoSuchPaddingException, IllegalBlockSizeException,
BadPaddingException {
StringBuffer sb = new StringBuffer();
DESKeySpec desKeySpec = new DESKeySpec(key.getBytes());
SecretKeyFactory skeyFactory = null;
Cipher cipher = null;
try {
skeyFactory = SecretKeyFactory.getInstance("DES");
cipher = Cipher.getInstance("DES");
} catch (NoSuchAlgorithmException e) {
e.printStackTrace();
}
SecretKey deskey = skeyFactory != null ? skeyFactory.generateSecret(desKeySpec) : null;
if (cipher != null) {
cipher.init(Cipher.ENCRYPT_MODE, deskey);
}
byte[] cipherText = cipher != null ? cipher.doFinal(txt.getBytes()) : new byte[0];
for (int n = 0; n < cipherText.length; n++) {
String stmp = (java.lang.Integer.toHexString(cipherText[n] & 0XFF));
if (stmp.length() == 1) {
sb.append("0" + stmp);
} else {
sb.append(stmp);
}
}
return sb.toString().toUpperCase();
}
/**
* 解密（使用DES算法）
*
* @param txt
* 需要解密的文本
* @param key
* 密钥
* @return 成功解密的文本
* @throws InvalidKeyException
* @throws InvalidKeySpecException
* @throws NoSuchPaddingException
* @throws IllegalBlockSizeException
* @throws BadPaddingException
*/
private static String deCrypto(String txt, String key)
throws InvalidKeyException, InvalidKeySpecException,
NoSuchPaddingException, IllegalBlockSizeException,
BadPaddingException {
DESKeySpec desKeySpec = new DESKeySpec(key.getBytes());
SecretKeyFactory skeyFactory = null;
Cipher cipher = null;
try {
skeyFactory = SecretKeyFactory.getInstance("DES");
cipher = Cipher.getInstance("DES");
} catch (NoSuchAlgorithmException e) {
e.printStackTrace();
}
SecretKey deskey = skeyFactory != null ? skeyFactory.generateSecret(desKeySpec) : null;
if (cipher != null) {
cipher.init(Cipher.DECRYPT_MODE, deskey);
}
byte[] btxts = new byte[txt.length() / 2];
for (int i = 0, count = txt.length(); i < count; i += 2) {
btxts[i / 2] = (byte) Integer.parseInt(txt.substring(i, i + 2), 16);
}
return (new String(cipher.doFinal(btxts)));
}
public void ReDoORUndo(boolean flag){
if(!IsShowing) {
ReDoOrUnDoFlag = true;
try {
if (flag) {
Log.e("redo","");
ReDoNodes.add(pathNode.getTheLastNote());
pathNode.deleteTheLastNote();
preview(pathNode.getPathList());
invalidate();
// ReDoOrUnDoFlag = true;
// if(!isShowing())
// preview(pathNode.getPathList());
} else {
Log.e("undo","");
pathNode.addNode(ReDoNodes.get(ReDoNodes.size() - 1));
ReDoNodes.remove(ReDoNodes.size() - 1);
preview(pathNode.getPathList());
// ReDoOrUnDoFlag = true;
// if(!isShowing())
// preview(pathNode.getPathList());
}
} catch (ArrayIndexOutOfBoundsException e) {
e.printStackTrace();
showCustomToast("无法操作＝－＝");
}
}
}
}