package com.jcodeing.extractwordview.widget;
import android.app.Activity;
import android.content.Context;
import android.graphics.Bitmap;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;
import android.graphics.Path;
import android.graphics.Point;
import android.graphics.Rect;
import android.graphics.drawable.BitmapDrawable;
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.text.Editable;
import android.text.Layout;
import android.text.Selection;
import android.text.TextUtils;
import android.util.AttributeSet;
import android.util.Log;
import android.view.Gravity;
import android.view.MotionEvent;
import android.view.View;
import android.widget.ListView;
import android.widget.PopupWindow;
import android.widget.Toast;
import com.jcodeing.extractwordview.R;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
/**
* The MIT License (MIT)
* <p/>
* Copyright (c) 2015 Jcodeing
* <p/>
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
* <p/>
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
* <p/>
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
public class EWListView extends ListView {
public Activity activity;
public boolean isSupportExtractWord = true;
private boolean isLongPressState;
Context context;
// ---------三个构造----------------------------------------------$构造
// 当设置,指定样式时调用
public EWListView(Context context, AttributeSet attrs, int defStyle) {
super(context, attrs, defStyle);
initialize(context);
}
// 布局文件初始化的时候,调用-------该构造方法,重用------------★
// 布局文件里面定义的属性都放在 AttributeSet attrs
public EWListView(Context context, AttributeSet attrs) {
super(context, attrs);
initialize(context);
}
// 该方法,一般,在代码中 new 该类的时候_使用
public EWListView(Context context) {
super(context);
initialize(context);
}
// --------------------------------------------------------------$初始
private void initialize(Context context) {
this.context = context;
initMagnifier();
}
private final int LONGPRESS = 1;
private Handler mPressHandler = new Handler() {
public void handleMessage(Message msg) {
switch (msg.what) {
//长按->初次启动--->显示放大镜&提词
case LONGPRESS:
isLongPressState = true;
Bundle data = msg.getData();
int X = data.getInt("X");
int RawX = data.getInt("RawX");
int Y = data.getInt("Y");
int RawY = data.getInt("RawY");
if (!isMoved) {
et = findMotionView(X, Y);
word = getSelectWord(et.getEditableText(), extractWordCurOff(et.getLayout(), et.x, et.y));
}
resBitmap = getBitmap(activity, RawX - WIDTH / 2, RawY - HEIGHT / 2, WIDTH, HEIGHT);
//放大镜-初次显示
calculate(RawX, RawY, MotionEvent.ACTION_DOWN);
break;
}
}
};
private int mLastMotionX,
mLastMotionY;
// 是否移动了
private boolean isMoved;
// 移动的阈值
private static final int TOUCH_SLOP = 20;
private EWListViewChildET et;
private String word;
@Override
public boolean onTouchEvent(MotionEvent event) {
if (!isSupportExtractWord)
return super.onTouchEvent(event);
int x = (int) event.getX();
int y = (int) event.getY();
switch (event.getAction()) {
case MotionEvent.ACTION_DOWN:
mLastMotionX = x;
mLastMotionY = y;
isMoved = false;
Message message = mPressHandler != null ? mPressHandler.obtainMessage()
: new Message();
//传对象,过去后,getRawY,不是相对的Y轴.
// message.obj = event;
Bundle bundle = new Bundle();
bundle.putInt("X", (int) event.getX());
bundle.putInt("RawX", (int) event.getRawX());
bundle.putInt("Y", (int) event.getY());
bundle.putInt("RawY", (int) event.getRawY());
message.setData(bundle);
message.what = LONGPRESS;
mPressHandler.sendMessageDelayed(message, 500);
break;
case MotionEvent.ACTION_MOVE:
if (isLongPressState)
if (Math.abs(mLastMotionX - x) > TOUCH_SLOP
|| Math.abs(mLastMotionY - y) > TOUCH_SLOP) {
//提词
et = findMotionView(x, y);
Log.e("J", et.x + "-ET--move--ET-" + et.y + "cont:" + et.getEditableText().toString().charAt(0));
word = getSelectWord(et.getEditableText(), extractWordCurOff(et.getLayout(), et.x, et.y));
//放大镜
resBitmap = getBitmap(activity, (int) event.getRawX() - WIDTH / 2, (int) event.getRawY() - HEIGHT / 2, WIDTH, HEIGHT);
calculate((int) event.getRawX(), (int) event.getRawY(), MotionEvent.ACTION_MOVE);
return true;
}
if (isMoved && !isLongPressState)
break;
//如果移动超过阈值
if (Math.abs(mLastMotionX - x) > TOUCH_SLOP
|| Math.abs(mLastMotionY - y) > TOUCH_SLOP)
//并且非长按状态下
if (!isLongPressState) {
// 则表示移动了
isMoved = true;
cleanLongPress();// 如果超出规定的移动范围--取消[长按事件]
}
break;
case MotionEvent.ACTION_UP:
if (isLongPressState) {
//dis掉放大镜
removeCallbacks(showZoom);
//drawLayout();
popup.dismiss();
//TODO --单词pop
cleanLongPress();
if (!TextUtils.isEmpty(word) && et != null)
onLongPressWord(word, et);
break;
}
cleanLongPress();// 只要一抬起就释放[长按事件]
break;
case MotionEvent.ACTION_CANCEL:
// 事件一取消也释放[长按事件],解决在ListView中滑动的时候长按事件的激活
cleanLongPress();
break;
}
return super.onTouchEvent(event);
}
private void cleanLongPress() {
isLongPressState = false;
mPressHandler.removeMessages(LONGPRESS);
}
private boolean calculate(int x, int y, int action) {
dstPoint.set(x - WIDTH / 2, y - 3 * HEIGHT);
if (y < 0) {
// hide popup if out of bounds
popup.dismiss();
return true;
}
if (action == MotionEvent.ACTION_DOWN) {
removeCallbacks(showZoom);
postDelayed(showZoom, DELAY_TIME);
} else if (!popup.isShowing()) {
showZoom.run();
}
popup.update(getLeft() + dstPoint.x, getTop() + dstPoint.y, -1, -1);
magnifier.invalidate();
return true;
}
// --------------------------------------------------------------$方法
// 单词提取
/**
* @param layout
* @param x 相对自己ev.getX()
* @param y
* @return
*/
public int extractWordCurOff(Layout layout, int x, int y) {
int line;
line = layout
.getLineForVertical(getScrollY() + y - 10);
int curOff = layout.getOffsetForHorizontal(line, x);
return curOff;
}
public String getSelectWord(Editable content, int curOff) {
String word = "";
int start = getWordLeftIndex(content, curOff);
int end = getWordRightIndex(content, curOff);
if (start >= 0 && end >= 0) {
word = content.subSequence(start, end).toString();
if (!"".equals(word)) {
// setFocusable(false);
et.setFocusableInTouchMode(true);
et.requestFocus();
Selection.setSelection(content, start, end);// 设置当前具有焦点的文本字段的选择范围,当前文本必须具有焦点，否则此方法无效
}
}
return word;
}
public int getWordLeftIndex(Editable content, int cur) {
// --left
String editableText = content.toString();// getText().toString();
if (cur >= editableText.length())
return cur;
int temp = 0;
if (cur >= 20)
temp = cur - 20;
Pattern pattern = Pattern.compile("[^'A-Za-z]");
Matcher m = pattern.matcher(editableText.charAt(cur) + "");
if (m.find())
return cur;
String text = editableText.subSequence(temp, cur).toString();
int i = text.length() - 1;
for (; i >= 0; i--) {
Matcher mm = pattern.matcher(text.charAt(i) + "");
if (mm.find())
break;
}
int start = i + 1;
start = cur - (text.length() - start);
return start;
}
public int getWordRightIndex(Editable content, int cur) {
// --right
String editableText = content.toString();
if (cur >= editableText.length())
return cur;
int templ = editableText.length();
if (cur <= templ - 20)
templ = cur + 20;
Pattern pattern = Pattern.compile("[^'A-Za-z]");
Matcher m = pattern.matcher(editableText.charAt(cur) + "");
if (m.find())
return cur;
String text1 = editableText.subSequence(cur, templ).toString();
int i = 0;
for (; i < text1.length(); i++) {
Matcher mm = pattern.matcher(text1.charAt(i) + "");
if (mm.find())
break;
}
int end = i;
end = cur + end;
return end;
}
/**
* Find the View closest to y.
*
* @param x
* @param y
* @return
*/
EWListViewChildET findMotionView(int x, int y) {
//是否从顶部开始find提高效率
boolean isTopStart = y < getHeight() / 2;
int childCount = getChildCount();
if (childCount > 0) {
if (isTopStart) {
for (int i = 0; i < childCount; i++) {
if (!(getChildAt(i) instanceof EWListViewChildET))
return null;
EWListViewChildET v = (EWListViewChildET) getChildAt(i);
if (y <= v.getBottom()) {
//特殊处理--更新EditText--相对自己的x,y
v.y = y - v.getTop();
v.x = x;
Log.e("J", "ET-->y::" + y + "--updata->" + v.y);
return v;
}
}
} else {
for (int i = childCount - 1; i >= 0; i--) {
if (!(getChildAt(i) instanceof EWListViewChildET))
return null;
EWListViewChildET v = (EWListViewChildET) getChildAt(i);
if (y >= v.getTop()) {
v.y = y - v.getTop();
v.x = x;
Log.e("J", "ET-->y::" + y + "--updata->" + v.y);
return v;
}
}
}
}
return null;
}
// ----------------------------------------------------$放大镜
private PopupWindow popup;
private static final int WIDTH = 400;
private static final int HEIGHT = 100;
private static final long DELAY_TIME = 250;
private Magnifier magnifier;
private void initMagnifier() {
BitmapDrawable resDrawable = (BitmapDrawable) context.getResources().getDrawable(R.mipmap.ic_launcher);
resBitmap = resDrawable.getBitmap();
magnifier = new Magnifier(context);
//pop在宽高的基础上多加出边框的宽高
popup = new PopupWindow(magnifier, WIDTH + 2, HEIGHT + 10);
popup.setAnimationStyle(android.R.style.Animation_Toast);
dstPoint = new Point(0, 0);
}
Runnable showZoom = new Runnable() {
public void run() {
popup.showAtLocation(EWListView.this,
Gravity.NO_GRAVITY,
getLeft() + dstPoint.x,
getTop() + dstPoint.y);
}
};
private Bitmap resBitmap;
private Point dstPoint;
class Magnifier extends View {
private Paint mPaint;
public Magnifier(Context context) {
super(context);
mPaint = new Paint();
mPaint.setAntiAlias(true);
mPaint.setColor(0xff008000);
mPaint.setStyle(Paint.Style.STROKE);
}
@Override
protected void onDraw(Canvas canvas) {
canvas.save();
// draw popup
mPaint.setAlpha(255);
canvas.drawBitmap(resBitmap, 0, 0, mPaint);
canvas.restore();
//draw popup frame
mPaint.reset();//重置
mPaint.setColor(Color.LTGRAY);
mPaint.setStyle(Paint.Style.STROKE);//设置空心
mPaint.setStrokeWidth(2);
Path path1 = new Path();
path1.moveTo(0, 0);
path1.lineTo(WIDTH, 0);
path1.lineTo(WIDTH, HEIGHT);
path1.lineTo(WIDTH / 2 + 15, HEIGHT);
path1.lineTo(WIDTH / 2, HEIGHT + 10);
path1.lineTo(WIDTH / 2 - 15, HEIGHT);
path1.lineTo(0, HEIGHT);
path1.close();//封闭
canvas.drawPath(path1, mPaint);
}
}
private Bitmap bitmap;//生成的位图
//截图
/**
* @param activity
* @param x 截图起始的横坐标
* @param y 截图起始的纵坐标
* @param width
* @param height
* @return
*/
private Bitmap getBitmap(Activity activity, int x, int y, int width, int height) {
View view = activity.getWindow().getDecorView();
view.setDrawingCacheEnabled(true);
view.buildDrawingCache();
bitmap = view.getDrawingCache();
//边界处理,否则会崩滴
if (x < 0)
x = 0;
if (y < 0)
y = 0;
if (x + width > bitmap.getWidth()) {
// x = x + WIDTH / 2;
// width = bitmap.getWidth() - x;
//保持不改变,截取图片宽高的原则
x = bitmap.getWidth() - width;
}
if (y + height > bitmap.getHeight()) {
// y = y + HEIGHT / 2;
// height = bitmap.getHeight() - y;
y = bitmap.getHeight() - height;
}
Rect frame = new Rect();
activity.getWindow().getDecorView().getWindowVisibleDisplayFrame(frame);
int toHeight = frame.top;
bitmap = Bitmap.createBitmap(bitmap, x, y, width, height);
view.setDrawingCacheEnabled(false);
return bitmap;
}
public void onLongPressWord(String word, EWListViewChildET ewe) {
if (!"".equals(word))
Toast.makeText(context, word, Toast.LENGTH_SHORT).show();
else {
ewe.requestFocus();
ewe.setFocusable(false);
// ewe.setFocusableInTouchMode(false);
}
}
}
