Android Open Source - PhotoStrips Photo Creator

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Back to project page PhotoStrips.
License

The source code is released under:
MIT License
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Java Source Code

package com.ahmetkizilay.image.photostrips;
/*from w  w  w .j  a  v  a  2  s  .com*/
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.Arrays;
import java.util.List;

import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.Color;
import android.graphics.Matrix;
import android.graphics.Bitmap.CompressFormat;
import android.media.ExifInterface;
import android.util.Log;

public class PhotoCreator {
    
  public static String getThumbnailLocation(File photo) {
    return photo.getParent() + File.separator + ".thumb" + File.separator + "." + photo.getName();
  }

    public static Bitmap getThumbnailBM(File photo, int targetDisplayWidth) {
        String thumbnailLocation = getThumbnailLocation(photo);
        File thumbnailFile = new File(thumbnailLocation);
        if(thumbnailFile.exists()) {
            Bitmap bmThumbnail = BitmapFactory.decodeFile(thumbnailLocation);
            if(bmThumbnail.getWidth() != targetDisplayWidth) {
                return createThumbnail(photo, targetDisplayWidth);
            }
            return bmThumbnail;
        }
        else {
            return createThumbnail(photo, targetDisplayWidth);
        }
    }

  public static Bitmap createThumbnail(File photo, int targetDisplayWidth) {
    String thumbLocation = getThumbnailLocation(photo);
    return createThumbnail(BitmapFactory.decodeFile(photo.getAbsolutePath()), targetDisplayWidth, thumbLocation);
  }
  
  public static Bitmap createThumbnail(Bitmap photoBM, int targetDisplayWidth, String thumbLocation) {
    try {
      boolean isPortrait = photoBM.getWidth() < photoBM
          .getHeight();
      float scaleFactor = (float) (targetDisplayWidth)
          / (float) (!isPortrait ? photoBM.getWidth()
              : photoBM.getHeight());

      Matrix thumbnailMatrix = new Matrix();
      thumbnailMatrix.postScale(scaleFactor, scaleFactor);
      if (isPortrait)
        thumbnailMatrix.postRotate(-90f);

      Bitmap thumbnailPicture = Bitmap.createBitmap(photoBM, 0, 0,
          photoBM.getWidth(), photoBM.getHeight(),
          thumbnailMatrix, true);

      thumbnailPicture.compress(CompressFormat.JPEG, 100,
          new FileOutputStream(new File(thumbLocation)));
      
      return thumbnailPicture;
    }
    catch(Exception exp) {
      exp.printStackTrace();
      return null;
    }
  }
  
  public static boolean prepareFinalImage(List<String> partFileNames, boolean isCameraFrontFacing, boolean isPortrait, String newFilePath) {
    if(isPortrait) {
      return prepareFinalImagePortrait(partFileNames, isCameraFrontFacing, newFilePath);
    }
    else {
      return prepareFinalImageLandscape(partFileNames, isCameraFrontFacing, newFilePath);
    }
  }

  private static boolean prepareFinalImagePortrait(List<String> partFileNames, boolean isCameraFrontFacing, String newFilePath) {
    try {

      Bitmap finalPicture = null;

      int[] pixelBuffer = new int[0];
      int[] horizontalFrameBuffer = new int[0];
      int[] verticalFrameBuffer = new int[0];

      for (int i = 0; i < partFileNames.size(); i++) {
        Bitmap thisPicture = BitmapFactory.decodeFile(partFileNames.get(i));

        int x = (int) ((float) (thisPicture.getWidth() - thisPicture.getHeight()) * 0.5);
        int y = 0;
        int w = thisPicture.getHeight();
        int h = thisPicture.getHeight();

        float scaleRatio = 480.0f / (float) thisPicture.getHeight();
        Matrix rotateMatrix = new Matrix();
        rotateMatrix.postScale(scaleRatio, (isCameraFrontFacing ? -1f : 1f) * scaleRatio);
        rotateMatrix.postRotate(isCameraFrontFacing ? -90f : 90f);

        thisPicture = Bitmap.createBitmap(thisPicture, x, y, w, h, rotateMatrix, true);
        if (i == 0) {
          finalPicture = Bitmap.createBitmap(thisPicture.getWidth(), thisPicture.getHeight() * partFileNames.size(), thisPicture.getConfig());

          pixelBuffer = new int[thisPicture.getWidth() * thisPicture.getHeight()];

          horizontalFrameBuffer = new int[thisPicture.getWidth() * 10];
          verticalFrameBuffer = new int[(thisPicture.getHeight() - 20) * 10];

          Arrays.fill(horizontalFrameBuffer, Color.WHITE);
          Arrays.fill(verticalFrameBuffer, Color.WHITE);
        }

        thisPicture.getPixels(pixelBuffer, 0, thisPicture.getWidth(), 0, 0, thisPicture.getWidth(), thisPicture.getHeight());
        finalPicture.setPixels(pixelBuffer, 0, thisPicture.getWidth(), 0, thisPicture.getHeight() * i, thisPicture.getWidth(), thisPicture.getHeight());

        finalPicture.setPixels(horizontalFrameBuffer, 0, thisPicture.getWidth(), 0, thisPicture.getHeight() * i, thisPicture.getWidth(), 10);
        finalPicture.setPixels(horizontalFrameBuffer, 0, thisPicture.getWidth(), 0, (thisPicture.getHeight() * (i + 1)) - 10, thisPicture.getWidth(), 10);

        finalPicture.setPixels(verticalFrameBuffer, 0, 10, 0, (thisPicture.getHeight() * i) + 10, 10, (thisPicture.getHeight() - 20));
        finalPicture.setPixels(verticalFrameBuffer, 0, 10, thisPicture.getWidth() - 10, (thisPicture.getHeight() * i) + 10, 10, (thisPicture.getHeight() - 20));
      }

      
      finalPicture.compress(CompressFormat.JPEG, 100, new FileOutputStream(newFilePath));

      return true;

    } catch (Exception exp) {
      exp.printStackTrace();      
      return false;
    }
  }
  
  private static boolean prepareFinalImageLandscape(List<String> partFileNames, boolean isCameraFrontFacing, String newFilePath) {
    try {

      Bitmap finalPicture = null;

      int[] pixelBuffer = new int[0];
      int[] horizontalFrameBuffer = new int[0];
      int[] verticalFrameBuffer = new int[0];

      for (int i = 0; i < partFileNames.size(); i++) {
        Bitmap thisPicture = BitmapFactory.decodeFile(partFileNames.get(i));
        int x = (int) ((float) (thisPicture.getWidth() - thisPicture.getHeight()) * 0.5);
        int y = 0;
        int w = thisPicture.getHeight();
        int h = thisPicture.getHeight();

        float scaleRatio = 480.0f / (float) thisPicture.getHeight();
        Matrix rotateMatrix = new Matrix();
                rotateMatrix.postScale(scaleRatio, (isCameraFrontFacing ? -1f : 1f) * scaleRatio);
        rotateMatrix.postRotate(isCameraFrontFacing ? -90f : 90f);

        thisPicture = Bitmap.createBitmap(thisPicture, x, y, w, h, rotateMatrix, true);
        if (i == 0) {
          finalPicture = Bitmap.createBitmap(thisPicture.getWidth() * partFileNames.size(), thisPicture.getHeight(), thisPicture.getConfig());

          pixelBuffer = new int[thisPicture.getWidth() * thisPicture.getHeight()];

          horizontalFrameBuffer = new int[thisPicture.getWidth() * 10];
          verticalFrameBuffer = new int[(thisPicture.getHeight() - 20) * 10];

          Arrays.fill(horizontalFrameBuffer, Color.WHITE);
          Arrays.fill(verticalFrameBuffer, Color.WHITE);
        }

        thisPicture.getPixels(pixelBuffer, 0, thisPicture.getWidth(), 0, 0, thisPicture.getWidth(), thisPicture.getHeight());
        finalPicture.setPixels(pixelBuffer, 0, thisPicture.getWidth(), thisPicture.getWidth() * i, 0, thisPicture.getWidth(), thisPicture.getHeight());

        finalPicture.setPixels(horizontalFrameBuffer, 0, thisPicture.getWidth(), thisPicture.getWidth() * i, 0, thisPicture.getWidth(), 10);
        finalPicture.setPixels(horizontalFrameBuffer, 0, thisPicture.getWidth(), thisPicture.getWidth() * i, thisPicture.getHeight() - 10, thisPicture.getWidth(), 10);

        finalPicture.setPixels(verticalFrameBuffer, 0, 10, thisPicture.getWidth() * i, 10, 10, thisPicture.getHeight() - 20);
        finalPicture.setPixels(verticalFrameBuffer, 0, 10, (thisPicture.getWidth() * (i + 1)) - 10, 10, 10, thisPicture.getHeight() - 20);

      }

      finalPicture.compress(CompressFormat.JPEG, 100, new FileOutputStream(newFilePath));

      return true;

    } catch (Exception exp) {
      Log.d("", exp.getMessage());
      return false;
    }
  }

}
Java Source Code List
