From 9fc7a1b980863955a139193ded0fef5edfbad296 Mon Sep 17 00:00:00 2001
From: Daniel Gultsch <daniel.gultsch@rwth-aachen.de>
Date: Sat, 5 Apr 2014 21:06:10 +0200
Subject: added button to open images

---
 .../conversations/persistance/FileBackend.java     | 76 ++++++++++++++++++++++
 1 file changed, 76 insertions(+)
 create mode 100644 src/eu/siacs/conversations/persistance/FileBackend.java

(limited to 'src/eu/siacs/conversations/persistance/FileBackend.java')

diff --git a/src/eu/siacs/conversations/persistance/FileBackend.java b/src/eu/siacs/conversations/persistance/FileBackend.java
new file mode 100644
index 00000000..05c50530
--- /dev/null
+++ b/src/eu/siacs/conversations/persistance/FileBackend.java
@@ -0,0 +1,76 @@
+package eu.siacs.conversations.persistance;
+
+import java.io.File;
+import java.io.FileNotFoundException;
+import java.io.FileOutputStream;
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.OutputStream;
+import java.math.BigInteger;
+
+import android.content.Context;
+import android.graphics.Bitmap;
+import android.graphics.BitmapFactory;
+import android.net.Uri;
+import android.util.Log;
+
+import eu.siacs.conversations.entities.Conversation;
+
+
+public class FileBackend {
+	
+	private static int IMAGE_SIZE = 1920;
+	
+	private Context context;
+	
+	public FileBackend(Context context) {
+		this.context = context;
+	}
+	
+	
+	public File copyImageToPrivateStorage(Conversation conversation, Uri image) {
+		try {
+			InputStream is = context.getContentResolver().openInputStream(image);
+			String prefix =  context.getFilesDir().getAbsolutePath();
+			String path = prefix+"/"+conversation.getAccount().getJid()+"/"+conversation.getContactJid();
+			String filename =new BigInteger(""+System.currentTimeMillis()).toString(32) + ".webp";
+			File file = new File(path+"/"+filename);
+			file.getParentFile().mkdirs();
+			file.createNewFile();
+			OutputStream os = new FileOutputStream(file);
+			Bitmap originalBitmap = BitmapFactory.decodeStream(is);
+			is.close();
+			int w = originalBitmap.getWidth();
+			int h = originalBitmap.getHeight();
+			boolean success;
+			if (Math.max(w, h) > IMAGE_SIZE) {
+				int scalledW;
+				int scalledH;
+				if (w<=h) {
+					scalledW = (int) (w / ((double) h/IMAGE_SIZE));
+					scalledH = IMAGE_SIZE;
+				} else {
+					scalledW = IMAGE_SIZE;
+					scalledH = (int) (h / ((double) w/IMAGE_SIZE));
+				}
+				Bitmap scalledBitmap = Bitmap.createScaledBitmap(originalBitmap, scalledW,scalledH, true);
+				success = scalledBitmap.compress(Bitmap.CompressFormat.WEBP, 75, os);
+			} else {
+				success = originalBitmap.compress(Bitmap.CompressFormat.WEBP, 75, os);
+			}
+			if (!success) {
+				Log.d("xmppService","couldnt compress");
+			}
+			os.close();
+			return file;
+		} catch (FileNotFoundException e) {
+			// TODO Auto-generated catch block
+			e.printStackTrace();
+		} catch (IOException e) {
+			// TODO Auto-generated catch block
+			e.printStackTrace();
+		}
+		
+		return null;
+	}
+}
-- 
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