Merge branch 'develop' into SettingsGreyedOut

[pub/Android/ownCloud.git] / src / com / owncloud / android / ui / preview / PreviewImageFragment.java

diff --git a/src/com/owncloud/android/ui/preview/PreviewImageFragment.java b/src/com/owncloud/android/ui/preview/PreviewImageFragment.java
index 67cac5f..0995793 100644 (file)
--- a/src/com/owncloud/android/ui/preview/PreviewImageFragment.java
+++ b/src/com/owncloud/android/ui/preview/PreviewImageFragment.java
@@ -16,6 +16,12 @@
  */
 package com.owncloud.android.ui.preview;
 
  */
 package com.owncloud.android.ui.preview;
 

+import java.io.BufferedInputStream;
+import java.io.File;
+import java.io.FileInputStream;
+import java.io.FilterInputStream;
+import java.io.IOException;
+import java.io.InputStream;

 import java.lang.ref.WeakReference;
 
 import android.accounts.Account;
 import java.lang.ref.WeakReference;
 
 import android.accounts.Account;


@@ -23,10 +29,12 @@ import android.annotation.SuppressLint;
 import android.app.Activity;
 import android.graphics.Bitmap;
 import android.graphics.BitmapFactory;
 import android.app.Activity;
 import android.graphics.Bitmap;
 import android.graphics.BitmapFactory;

+import android.graphics.BitmapFactory.Options;
+import android.graphics.Point;

 import android.os.AsyncTask;
 import android.os.AsyncTask;

-import android.os.Build;

 import android.os.Bundle;
 import android.support.v4.app.FragmentStatePagerAdapter;
 import android.os.Bundle;
 import android.support.v4.app.FragmentStatePagerAdapter;

+import android.view.Display;

 import android.view.LayoutInflater;
 import android.view.View;
 import android.view.View.OnClickListener;
 import android.view.LayoutInflater;
 import android.view.View;
 import android.view.View.OnClickListener;


@@ -38,7 +46,6 @@ import android.widget.TextView;
 import com.actionbarsherlock.view.Menu;
 import com.actionbarsherlock.view.MenuInflater;
 import com.actionbarsherlock.view.MenuItem;
 import com.actionbarsherlock.view.Menu;
 import com.actionbarsherlock.view.MenuInflater;
 import com.actionbarsherlock.view.MenuItem;

-import com.ortiz.touch.TouchImageView;

 import com.owncloud.android.R;
 import com.owncloud.android.datamodel.OCFile;
 import com.owncloud.android.files.FileMenuFilter;
 import com.owncloud.android.R;
 import com.owncloud.android.datamodel.OCFile;
 import com.owncloud.android.files.FileMenuFilter;


@@ -46,6 +53,9 @@ import com.owncloud.android.lib.common.utils.Log_OC;
 import com.owncloud.android.ui.dialog.ConfirmationDialogFragment;
 import com.owncloud.android.ui.dialog.RemoveFileDialogFragment;
 import com.owncloud.android.ui.fragment.FileFragment;
 import com.owncloud.android.ui.dialog.ConfirmationDialogFragment;
 import com.owncloud.android.ui.dialog.RemoveFileDialogFragment;
 import com.owncloud.android.ui.fragment.FileFragment;

+import com.owncloud.android.utils.BitmapUtils;
+import com.owncloud.android.utils.TouchImageViewCustom;
+

 
 
 /**
 
 
 /**


@@ -59,17 +69,12 @@ import com.owncloud.android.ui.fragment.FileFragment;
  */
 public class PreviewImageFragment extends FileFragment {
 
  */
 public class PreviewImageFragment extends FileFragment {
 

-    private static final boolean IS_HONEYCOMB_OR_HIGHER = Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB;
-

     public static final String EXTRA_FILE = "FILE";
     public static final String EXTRA_ACCOUNT = "ACCOUNT";
 
     public static final String EXTRA_FILE = "FILE";
     public static final String EXTRA_ACCOUNT = "ACCOUNT";
 

-    public static final int MAX_OPENGL_TEXTURE_WIDTH = 2048;
-    public static final int MAX_OPENGL_TEXTURE_HEIGHT = 2048;
-

     private View mView;
     private Account mAccount;
     private View mView;
     private Account mAccount;

-    private TouchImageView mImageView;
+    private TouchImageViewCustom mImageView;

     private TextView mMessageView;
     private ProgressBar mProgressWheel;
 
     private TextView mMessageView;
     private ProgressBar mProgressWheel;
 


@@ -78,6 +83,8 @@ public class PreviewImageFragment extends FileFragment {
     private static final String TAG = PreviewImageFragment.class.getSimpleName();
 
     private boolean mIgnoreFirstSavedState;
     private static final String TAG = PreviewImageFragment.class.getSimpleName();
 
     private boolean mIgnoreFirstSavedState;

+    
+    private LoadBitmapTask mLoadBitmapTask = null;

 
     
     /**
 
     
     /**


@@ -128,7 +135,7 @@ public class PreviewImageFragment extends FileFragment {
             Bundle savedInstanceState) {
         super.onCreateView(inflater, container, savedInstanceState);
         mView = inflater.inflate(R.layout.preview_image_fragment, container, false);
             Bundle savedInstanceState) {
         super.onCreateView(inflater, container, savedInstanceState);
         mView = inflater.inflate(R.layout.preview_image_fragment, container, false);

-        mImageView = (TouchImageView) mView.findViewById(R.id.image);
+        mImageView = (TouchImageViewCustom) mView.findViewById(R.id.image);

         mImageView.setVisibility(View.GONE);
         mImageView.setOnClickListener(new OnClickListener() {
             @Override
         mImageView.setVisibility(View.GONE);
         mImageView.setOnClickListener(new OnClickListener() {
             @Override


@@ -186,12 +193,22 @@ public class PreviewImageFragment extends FileFragment {
     public void onStart() {
         super.onStart();
         if (getFile() != null) {
     public void onStart() {
         super.onStart();
         if (getFile() != null) {

-           BitmapLoader bl = new BitmapLoader(mImageView, mMessageView, mProgressWheel);
-           bl.execute(new String[]{getFile().getStoragePath()});
+           mLoadBitmapTask = new LoadBitmapTask(mImageView, mMessageView, mProgressWheel);
+           mLoadBitmapTask.execute(new String[]{getFile().getStoragePath()});

         }
     }
     
     
         }
     }
     
     

+    @Override
+    public void onStop() {
+        super.onStop();
+        if (mLoadBitmapTask != null) {
+            mLoadBitmapTask.cancel(true);
+            mLoadBitmapTask = null;
+        }
+        
+    }
+    

     /**
      * {@inheritDoc}
      */
     /**
      * {@inheritDoc}
      */


@@ -310,6 +327,7 @@ public class PreviewImageFragment extends FileFragment {
     public void onDestroy() {
         if (mBitmap != null) {
             mBitmap.recycle();
     public void onDestroy() {
         if (mBitmap != null) {
             mBitmap.recycle();

+            System.gc();

         }
         super.onDestroy();
     }
         }
         super.onDestroy();
     }


@@ -324,14 +342,14 @@ public class PreviewImageFragment extends FileFragment {
     }
     
     
     }
     
     

-    private class BitmapLoader extends AsyncTask<String, Void, Bitmap> {
+    private class LoadBitmapTask extends AsyncTask<String, Void, Bitmap> {

 
         /**
          * Weak reference to the target {@link ImageView} where the bitmap will be loaded into.
          * 
          * Using a weak reference will avoid memory leaks if the target ImageView is retired from memory before the load finishes.
          */
 
         /**
          * Weak reference to the target {@link ImageView} where the bitmap will be loaded into.
          * 
          * Using a weak reference will avoid memory leaks if the target ImageView is retired from memory before the load finishes.
          */

-        private final WeakReference<ImageView> mImageViewRef;
+        private final WeakReference<ImageViewCustom> mImageViewRef;

 
         /**
          * Weak reference to the target {@link TextView} where error messages will be written.
 
         /**
          * Weak reference to the target {@link TextView} where error messages will be written.


@@ -360,8 +378,8 @@ public class PreviewImageFragment extends FileFragment {
          * 
          * @param imageView     Target {@link ImageView} where the bitmap will be loaded into.
          */
          * 
          * @param imageView     Target {@link ImageView} where the bitmap will be loaded into.
          */

-        public BitmapLoader(ImageView imageView, TextView messageView, ProgressBar progressWheel) {
-            mImageViewRef = new WeakReference<ImageView>(imageView);
+        public LoadBitmapTask(ImageViewCustom imageView, TextView messageView, ProgressBar progressWheel) {
+            mImageViewRef = new WeakReference<ImageViewCustom>(imageView);

             mMessageViewRef = new WeakReference<TextView>(messageView);
             mProgressWheelRef = new WeakReference<ProgressBar>(progressWheel);
         }
             mMessageViewRef = new WeakReference<TextView>(messageView);
             mProgressWheelRef = new WeakReference<ProgressBar>(progressWheel);
         }


@@ -373,31 +391,66 @@ public class PreviewImageFragment extends FileFragment {
             if (params.length != 1) return result;
             String storagePath = params[0];
             try {
             if (params.length != 1) return result;
             String storagePath = params[0];
             try {

-                //Decode file into a bitmap in real size for being able to make zoom on the image
-                result = BitmapFactory.decodeFile(storagePath);

 
 

+                if (isCancelled()) return result;
+                
+                File picture = new File(storagePath);
+
+                if (picture != null) {
+                    // Decode file into a bitmap in real size for being able to make zoom on 
+                    // the image
+                    result = BitmapFactory.decodeStream(new FlushedInputStream
+                            (new BufferedInputStream(new FileInputStream(picture))));
+                }
+
+                if (isCancelled()) return result;
+                

                 if (result == null) {
                     mErrorMessageId = R.string.preview_image_error_unknown_format;
                     Log_OC.e(TAG, "File could not be loaded as a bitmap: " + storagePath);
                 if (result == null) {
                     mErrorMessageId = R.string.preview_image_error_unknown_format;
                     Log_OC.e(TAG, "File could not be loaded as a bitmap: " + storagePath);

+                } else {
+                    // Rotate image, obeying exif tag.
+                    result = BitmapUtils.rotateImage(result, storagePath);

                 }
                 
             } catch (OutOfMemoryError e) {
                 }
                 
             } catch (OutOfMemoryError e) {

-                mErrorMessageId = R.string.preview_image_error_unknown_format;

                 Log_OC.e(TAG, "Out of memory occured for file " + storagePath, e);
                 Log_OC.e(TAG, "Out of memory occured for file " + storagePath, e);

+
+                if (isCancelled()) return result;
+                
+                // If out of memory error when loading or rotating image, try to load it scaled
+                result = loadScaledImage(storagePath);
+
+                if (result == null) {
+                    mErrorMessageId = R.string.preview_image_error_unknown_format;
+                    Log_OC.e(TAG, "File could not be loaded as a bitmap: " + storagePath);
+                } else {
+                    // Rotate scaled image, obeying exif tag
+                    result = BitmapUtils.rotateImage(result, storagePath);
+                }

                     
             } catch (NoSuchFieldError e) {
                 mErrorMessageId = R.string.common_error_unknown;
                     
             } catch (NoSuchFieldError e) {
                 mErrorMessageId = R.string.common_error_unknown;

-                Log_OC.e(TAG, "Error from access to unexisting field despite protection; file " + storagePath, e);
+                Log_OC.e(TAG, "Error from access to unexisting field despite protection; file " 
+                                + storagePath, e);

                     
             } catch (Throwable t) {
                 mErrorMessageId = R.string.common_error_unknown;
                 Log_OC.e(TAG, "Unexpected error loading " + getFile().getStoragePath(), t);
                 
             }
                     
             } catch (Throwable t) {
                 mErrorMessageId = R.string.common_error_unknown;
                 Log_OC.e(TAG, "Unexpected error loading " + getFile().getStoragePath(), t);
                 
             }

+            

             return result;
         }
         
         @Override
             return result;
         }
         
         @Override

+        protected void onCancelled(Bitmap result) {
+            if (result != null) {
+                result.recycle();
+            }
+        }
+
+        @Override

         protected void onPostExecute(Bitmap result) {
             hideProgressWheel();
             if (result != null) {
         protected void onPostExecute(Bitmap result) {
             hideProgressWheel();
             if (result != null) {


@@ -406,17 +459,13 @@ public class PreviewImageFragment extends FileFragment {
                 showErrorMessage();
             }
         }
                 showErrorMessage();
             }
         }

-
+        

         @SuppressLint("InlinedApi")
         private void showLoadedImage(Bitmap result) {
             if (mImageViewRef != null) {
         @SuppressLint("InlinedApi")
         private void showLoadedImage(Bitmap result) {
             if (mImageViewRef != null) {

-                final ImageView imageView = mImageViewRef.get();
+                final ImageViewCustom imageView = mImageViewRef.get();

                 if (imageView != null) {
                 if (imageView != null) {

-                    if(IS_HONEYCOMB_OR_HIGHER && checkIfMaximumBitmapExceed(result)) {
-                        // Set layer type to software one for avoiding exceed
-                        // and problems in visualization
-                        imageView.setLayerType(View.LAYER_TYPE_SOFTWARE, null);
-                    }
+                    imageView.setBitmap(result);

                     imageView.setImageBitmap(result);
                     imageView.setVisibility(View.VISIBLE);
                     mBitmap  = result;
                     imageView.setImageBitmap(result);
                     imageView.setVisibility(View.VISIBLE);
                     mBitmap  = result;


@@ -477,20 +526,87 @@ public class PreviewImageFragment extends FileFragment {
         container.finish();
     }
     
         container.finish();
     }
     

-    public TouchImageView getImageView() {
+    public TouchImageViewCustom getImageView() {

         return mImageView;
     }
 
         return mImageView;
     }
 

+    static class FlushedInputStream extends FilterInputStream {
+        public FlushedInputStream(InputStream inputStream) {
+        super(inputStream);
+        }
+
+        @Override
+        public long skip(long n) throws IOException {
+            long totalBytesSkipped = 0L;
+            while (totalBytesSkipped < n) {
+                long bytesSkipped = in.skip(n - totalBytesSkipped);
+                if (bytesSkipped == 0L) {
+                      int byteValue = read();
+                      if (byteValue < 0) {
+                          break;  // we reached EOF
+                      } else {
+                          bytesSkipped = 1; // we read one byte
+                      }
+               }
+               totalBytesSkipped += bytesSkipped;
+            }
+            return totalBytesSkipped;
+        }
+    }
+

     /**
     /**

-     * Checks if current bitmaps exceed the maximum OpenGL texture size limit
-     * @param bitmap
-     * @return boolean
+     * Load image scaled
+     * @param storagePath: path of the image
+     * @return Bitmap

      */
      */

-    private boolean checkIfMaximumBitmapExceed(Bitmap bitmap) {
-        if (bitmap.getWidth() > MAX_OPENGL_TEXTURE_WIDTH 
-                || bitmap.getHeight() > MAX_OPENGL_TEXTURE_HEIGHT) {
-            return true;
+    @SuppressWarnings("deprecation")
+    private Bitmap loadScaledImage(String storagePath) {
+
+        Log_OC.d(TAG, "Loading image scaled");
+
+        // set desired options that will affect the size of the bitmap
+        BitmapFactory.Options options = new Options();
+        options.inScaled = true;
+        options.inPurgeable = true;
+        if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.GINGERBREAD_MR1) {
+            options.inPreferQualityOverSpeed = false;
+        }
+        if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.HONEYCOMB) {
+            options.inMutable = false;
+        }
+        // make a false load of the bitmap - just to be able to read outWidth, outHeight and outMimeType
+        options.inJustDecodeBounds = true;
+        BitmapFactory.decodeFile(storagePath, options);
+
+        int width = options.outWidth;
+        int height = options.outHeight;
+        int scale = 1;
+
+        Display display = getActivity().getWindowManager().getDefaultDisplay();
+        Point size = new Point();
+        int screenWidth;
+        int screenHeight;
+        if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.HONEYCOMB_MR2) {
+            display.getSize(size);
+            screenWidth = size.x;
+            screenHeight = size.y;
+        } else {
+            screenWidth = display.getWidth();
+            screenHeight = display.getHeight();

         }
         }

-        return false;
+
+        if (width > screenWidth) {
+            // second try to scale down the image , this time depending upon the screen size 
+            scale = (int) Math.floor((float)width / screenWidth);
+        }
+        if (height > screenHeight) {
+            scale = Math.max(scale, (int) Math.floor((float)height / screenHeight));
+        }
+        options.inSampleSize = scale;
+
+        // really load the bitmap
+        options.inJustDecodeBounds = false; // the next decodeFile call will be real
+        return BitmapFactory.decodeFile(storagePath, options);
+

     }
 }
     }
 }