Android图片的剪裁处理
jopen
10年前
/* * Copyright (C) 2015 www.amengsoft.org * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package com.baojia.view; import java.io.File; import java.io.FileOutputStream; import java.util.concurrent.CountDownLatch; import android.app.Activity; import android.content.Context; import android.graphics.Bitmap; import android.graphics.Bitmap.CompressFormat; import android.graphics.Canvas; import android.graphics.Matrix; import android.graphics.PointF; import android.graphics.Rect; import android.graphics.RectF; import android.media.FaceDetector; import android.os.Handler; import com.ab.global.AbConstant; import com.ab.util.AbFileUtil; import com.ab.view.cropimage.HighlightView; /** * 裁剪处理. * @author LuKe */ public class CropImage{ /** The file local. */ public File FILE_LOCAL = null; // Whether we are wait the user to pick a face. /** The m waiting to pick. */ public boolean mWaitingToPick; // Whether the "save" button is already clicked. /** The m saving. */ public boolean mSaving; /** The m crop. */ public HighlightView mCrop; /** The m context. */ private Context mContext; /** The m handler. */ private Handler mHandler; /** The m image view. */ private CropImageView mImageView; /** The m bitmap. */ private Bitmap mBitmap; /** * 裁切框宽和宽比 * **/ private float widthByHeight=1; private int cropImgWidth=300,cropImgHeight=200; /** * Instantiates a new crop image. * * @param context the context * @param imageView the image view * @param handler the handler */ public CropImage(Context context, CropImageView imageView,Handler handler,int cropImgWidth,int cropImgHeight){ mContext = context; mImageView = imageView; mImageView.setCropImage(this); mHandler = handler; this.cropImgWidth=cropImgWidth; this.cropImgHeight=cropImgHeight; widthByHeight=cropImgHeight/cropImgWidth; //初始化图片保存路径 FILE_LOCAL = new File(AbFileUtil.getImageDownFullDir()); if(!FILE_LOCAL.exists()){ FILE_LOCAL.mkdirs(); } } /** * 图片裁剪. * * @param bm the bm */ public void crop(Bitmap bm){ mBitmap = bm; startFaceDetection(); } /** * Start rotate. * * @param d the d */ public void startRotate(float d) { if (((Activity)mContext).isFinishing()) { return; } final float degrees = d; final CountDownLatch latch = new CountDownLatch(1); Runnable mRunnable = new Runnable() { public void run() { mHandler.post(new Runnable() { public void run() { try{ Matrix m = new Matrix(); m.setRotate(degrees); Bitmap tb = Bitmap.createBitmap(mBitmap, 0, 0, mBitmap.getWidth(), mBitmap.getHeight(),m,false); mBitmap = tb; mImageView.resetView(tb,cropImgWidth,cropImgHeight); if (mImageView.mHighlightViews.size() > 0) { mCrop = mImageView.mHighlightViews.get(0); mCrop.setFocus(true); } }catch (Exception e) { } latch.countDown(); } }); try { latch.await(); } catch (Exception e) { throw new RuntimeException(e); } //mRunFaceDetection.run(); } }; new Thread(new BackgroundJob("", mRunnable, mHandler)).start(); } /** * Start face detection. */ private void startFaceDetection() { if (((Activity)mContext).isFinishing()) { return; } Runnable mRunnable = new Runnable() { public void run() { final CountDownLatch latch = new CountDownLatch(1); final Bitmap b = mBitmap; mHandler.post(new Runnable() { public void run() { if (b != mBitmap && b != null) { mImageView.setImageBitmapResetBase(b, true); mBitmap.recycle(); mBitmap = b; } if (mImageView.getScale() == 1.0f) { mImageView.center(true, true); } latch.countDown(); } }); try { latch.await(); } catch (Exception e) { throw new RuntimeException(e); } mRunFaceDetection.run(); } }; new Thread(new BackgroundJob("", mRunnable, mHandler)).start(); } /** * 裁剪并保存. * * @return the bitmap */ public Bitmap cropAndSave(){ final Bitmap bmp = onSaveClicked(mBitmap); mImageView.mHighlightViews.clear(); return bmp; } /** * 裁剪并保存. * * @param bm the bm * @return the bitmap */ public Bitmap cropAndSave(Bitmap bm){ final Bitmap bmp = onSaveClicked(bm); mImageView.mHighlightViews.clear(); return bmp; } /** * 取消裁剪. */ public void cropCancel(){ mImageView.mHighlightViews.clear(); mImageView.invalidate(); } /** * On save clicked. * * @param bm the bm * @return the bitmap */ private Bitmap onSaveClicked(Bitmap bm) { if (mSaving) return bm; if (mCrop == null) { return bm; } mSaving = true; Rect r = mCrop.getCropRect(); //int width = 360; //int height = 360; Bitmap croppedImage = Bitmap.createBitmap(cropImgWidth, cropImgHeight, Bitmap.Config.RGB_565); Canvas canvas = new Canvas(croppedImage); Rect dstRect = new Rect(0, 0, cropImgWidth, cropImgHeight); canvas.drawBitmap(bm, r, dstRect, null); return croppedImage; } /** * Save to local. * * @param bitmap the bitmap * @return the string */ public String saveToLocal(Bitmap bitmap){ //需要裁剪后保存为新图片 String mFileName = System.currentTimeMillis() + ".jpg"; String path = FILE_LOCAL+File.separator+mFileName; try{ FileOutputStream fos = new FileOutputStream(path); bitmap.compress(CompressFormat.JPEG, 85, fos); fos.flush(); fos.close(); } catch (Exception e){ e.printStackTrace(); return null; } return path; } /** The m run face detection. */ Runnable mRunFaceDetection = new Runnable() { float mScale = 1F; Matrix mImageMatrix; FaceDetector.Face[] mFaces = new FaceDetector.Face[3]; int mNumFaces; // For each face, we create a HightlightView for it. private void handleFace(FaceDetector.Face f) { PointF midPoint = new PointF(); int r = ((int) (f.eyesDistance() * mScale)) * 2; f.getMidPoint(midPoint); midPoint.x *= mScale; midPoint.y *= mScale; int midX = (int) midPoint.x; int midY = (int) midPoint.y; HighlightView hv = new HighlightView(mImageView); int width = mBitmap.getWidth(); int height = mBitmap.getHeight(); Rect imageRect = new Rect(0, 0, width, height); RectF faceRect = new RectF(midX, midY, midX, midY); faceRect.inset(-r, -r); if (faceRect.left < 0) { faceRect.inset(-faceRect.left, -faceRect.left); } if (faceRect.top < 0) { faceRect.inset(-faceRect.top, -faceRect.top); } if (faceRect.right > imageRect.right) { faceRect.inset(faceRect.right - imageRect.right, faceRect.right - imageRect.right); } if (faceRect.bottom > imageRect.bottom) { faceRect.inset(faceRect.bottom - imageRect.bottom, faceRect.bottom - imageRect.bottom); } hv.setup(mImageMatrix, imageRect, faceRect, false, true); mImageView.add(hv); } // Create a default HightlightView if we found no face in the picture. private void makeDefault() { HighlightView hv = new HighlightView(mImageView); int width = mBitmap.getWidth(); int height = mBitmap.getHeight(); Rect imageRect = new Rect(0, 0, width, height); // CR: sentences! // make the default size about 4/5 of the width or height int cropWidth = Math.min(width, height) * 4 / 5; int cropHeight = cropWidth*cropImgHeight/cropImgWidth; int x = (width - cropWidth) / 2; int y = (height - cropHeight) / 2; RectF cropRect = new RectF(x, y, x + cropWidth, y + cropHeight); hv.setup(mImageMatrix, imageRect, cropRect, false, true); mImageView.add(hv); } // Scale the image down for faster face detection. private Bitmap prepareBitmap() { if (mBitmap == null) { return null; } // 256 pixels wide is enough. // CR: F => f (or change all f to F). if (mBitmap.getWidth() > 256) { mScale = 256.0F / mBitmap.getWidth(); } Matrix matrix = new Matrix(); matrix.setScale(mScale, mScale); Bitmap faceBitmap = Bitmap.createBitmap(mBitmap, 0, 0, mBitmap.getWidth(), mBitmap.getHeight(), matrix, true); return faceBitmap; } public void run() { mImageMatrix = mImageView.getImageMatrix(); Bitmap faceBitmap = prepareBitmap(); mScale = 1.0F / mScale; if (faceBitmap != null) { FaceDetector detector = new FaceDetector(faceBitmap.getWidth(), faceBitmap.getHeight(), mFaces.length); mNumFaces = detector.findFaces(faceBitmap, mFaces); } if (faceBitmap != null && faceBitmap != mBitmap) { faceBitmap.recycle(); } mHandler.post(new Runnable() { public void run() { mWaitingToPick = mNumFaces > 1; makeDefault(); mImageView.invalidate(); if (mImageView.mHighlightViews.size() > 0) { mCrop = mImageView.mHighlightViews.get(0); mCrop.setFocus(true); } if (mNumFaces > 1) { } } }); } }; /** * The Class BackgroundJob. */ public class BackgroundJob implements Runnable{ /** The message. */ private String message; /** The m job. */ private Runnable mJob; /** The m handler. */ private Handler mHandler; /** * Instantiates a new background job. * * @param m the m * @param job the job * @param handler the handler */ public BackgroundJob(String m, Runnable job, Handler handler){ message = m; mJob = job; mHandler = handler; } /** * 描述：TODO. * * @see java.lang.Runnable#run() * @author: zhaoqp * @date：2013-6-17 上午9:04:47 * @version v1.0 */ public void run(){ final CountDownLatch latch = new CountDownLatch(1); mHandler.post(new Runnable() { public void run() { try{ mHandler.sendMessage(mHandler.obtainMessage(AbConstant.SHOW_PROGRESS)); }catch (Exception e) { } latch.countDown(); } }); try { latch.await(); } catch (Exception e) { throw new RuntimeException(e); } try { mJob.run(); }catch (Exception e) { e.printStackTrace(); }finally{ mHandler.sendMessage(mHandler.obtainMessage(AbConstant.REMOVE_PROGRESS)); } } } }