xref: /packages/apps/Gallery2/src/com/android/gallery3d/filtershow/FilterShowActivity.java

/*
 * Copyright (C) 2012 The Android Open Source Project
 *
 * 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.android.gallery3d.filtershow;

import android.annotation.TargetApi;
import android.app.ActionBar;
import android.app.Activity;
import android.app.ProgressDialog;
import android.app.WallpaperManager;
import android.content.ContentValues;
import android.content.Context;
import android.content.Intent;
import android.content.res.Configuration;
import android.content.res.Resources;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.Color;
import android.graphics.Point;
import android.graphics.drawable.Drawable;
import android.net.Uri;
import android.os.AsyncTask;
import android.os.Bundle;
import android.provider.MediaStore;
import android.util.DisplayMetrics;
import android.util.Log;
import android.util.TypedValue;
import android.view.Display;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.WindowManager;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.ImageButton;
import android.widget.LinearLayout;
import android.widget.ListView;
import android.widget.SeekBar;
import android.widget.ShareActionProvider;
import android.widget.ShareActionProvider.OnShareTargetSelectedListener;
import android.widget.Toast;

import com.android.gallery3d.R;
import com.android.gallery3d.data.LocalAlbum;
import com.android.gallery3d.filtershow.cache.ImageLoader;
import com.android.gallery3d.filtershow.filters.FiltersManager;
import com.android.gallery3d.filtershow.filters.ImageFilter;
import com.android.gallery3d.filtershow.filters.ImageFilterBorder;
import com.android.gallery3d.filtershow.filters.ImageFilterFx;
import com.android.gallery3d.filtershow.filters.ImageFilterParametricBorder;
import com.android.gallery3d.filtershow.filters.ImageFilterRS;
import com.android.gallery3d.filtershow.filters.ImageFilterRedEye;
import com.android.gallery3d.filtershow.imageshow.ImageCrop;
import com.android.gallery3d.filtershow.imageshow.ImageDraw;
import com.android.gallery3d.filtershow.imageshow.ImageFlip;
import com.android.gallery3d.filtershow.imageshow.ImageRedEyes;
import com.android.gallery3d.filtershow.imageshow.ImageRotate;
import com.android.gallery3d.filtershow.imageshow.ImageShow;
import com.android.gallery3d.filtershow.imageshow.ImageStraighten;
import com.android.gallery3d.filtershow.imageshow.ImageTinyPlanet;
import com.android.gallery3d.filtershow.imageshow.ImageZoom;
import com.android.gallery3d.filtershow.imageshow.MasterImage;
import com.android.gallery3d.filtershow.presets.ImagePreset;
import com.android.gallery3d.filtershow.provider.SharedImageProvider;
import com.android.gallery3d.filtershow.tools.SaveCopyTask;
import com.android.gallery3d.filtershow.ui.FilterIconButton;
import com.android.gallery3d.filtershow.ui.FramedTextButton;
import com.android.gallery3d.filtershow.ui.ImageCurves;
import com.android.gallery3d.filtershow.ui.Spline;
import com.android.gallery3d.util.GalleryUtils;

import java.io.File;
import java.io.IOException;
import java.lang.ref.WeakReference;
import java.util.Vector;

@TargetApi(16)
public class FilterShowActivity extends Activity implements OnItemClickListener,
        OnShareTargetSelectedListener {

    // fields for supporting crop action
    public static final String CROP_ACTION = "com.android.camera.action.CROP";
    private CropExtras mCropExtras = null;
    MasterImage mMasterImage = MasterImage.getImage();

    public static final String TINY_PLANET_ACTION = "com.android.camera.action.TINY_PLANET";
    public static final String LAUNCH_FULLSCREEN = "launch-fullscreen";
    public static final int MAX_BMAP_IN_INTENT = 990000;
    private final PanelController mPanelController = new PanelController();
    private ImageLoader mImageLoader = null;
    private ImageShow mImageShow = null;
    private ImageCurves mImageCurves = null;
    private ImageRedEyes mImageRedEyes = null;
    private ImageDraw mImageDraw = null;
    private ImageStraighten mImageStraighten = null;
    private ImageZoom mImageZoom = null;
    private ImageCrop mImageCrop = null;
    private ImageRotate mImageRotate = null;
    private ImageFlip mImageFlip = null;
    private ImageTinyPlanet mImageTinyPlanet = null;

    private View mListFx = null;
    private View mListBorders = null;
    private View mListGeometry = null;
    private View mListColors = null;
    private View mListFilterButtons = null;
    private View mSaveButton = null;

    private ImageButton mFxButton = null;
    private ImageButton mBorderButton = null;
    private ImageButton mGeometryButton = null;
    private ImageButton mColorsButton = null;

    private LinearLayout listColors = null;
    private LinearLayout listFilters = null;
    private LinearLayout listBorders = null;

    private static final int SELECT_PICTURE = 1;
    private static final String LOGTAG = "FilterShowActivity";
    protected static final boolean ANIMATE_PANELS = true;
    private static int mImageBorderSize = 4; // in percent

    private boolean mShowingHistoryPanel = false;
    private boolean mShowingImageStatePanel = false;

    private final Vector<ImageShow> mImageViews = new Vector<ImageShow>();
    private final Vector<View> mListViews = new Vector<View>();
    private final Vector<ImageButton> mBottomPanelButtons = new Vector<ImageButton>();

    private ShareActionProvider mShareActionProvider;
    private File mSharedOutputFile = null;

    private boolean mSharingImage = false;

    private WeakReference<ProgressDialog> mSavingProgressDialog;
    private static final int SEEK_BAR_MAX = 600;

    private LoadBitmapTask mLoadBitmapTask;
    private FilterIconButton mNullFxFilter;
    private FilterIconButton mNullBorderFilter;
    private int mIconSeedSize = 140;

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        setupMasterImage();
        ImageFilterRS.setRenderScriptContext(this);

        ImageShow.setDefaultBackgroundColor(getResources().getColor(R.color.background_screen));
        // TODO: get those values from XML.
        ImageZoom.setZoomedSize(getPixelsFromDip(256));
        FramedTextButton.setTextSize((int) getPixelsFromDip(14));
        FramedTextButton.setTrianglePadding((int) getPixelsFromDip(4));
        FramedTextButton.setTriangleSize((int) getPixelsFromDip(10));
        ImageShow.setTextSize((int) getPixelsFromDip(12));
        ImageShow.setTextPadding((int) getPixelsFromDip(10));
        ImageShow.setOriginalTextMargin((int) getPixelsFromDip(4));
        ImageShow.setOriginalTextSize((int) getPixelsFromDip(18));
        ImageShow.setOriginalText(getResources().getString(R.string.original_picture_text));
        mIconSeedSize = getResources().getDimensionPixelSize(R.dimen.thumbnail_size);

        Drawable curveHandle = getResources().getDrawable(R.drawable.camera_crop);
        int curveHandleSize = (int) getResources().getDimension(R.dimen.crop_indicator_size);
        Spline.setCurveHandle(curveHandle, curveHandleSize);
        Spline.setCurveWidth((int) getPixelsFromDip(3));

        setContentView(R.layout.filtershow_activity);
        ActionBar actionBar = getActionBar();
        actionBar.setDisplayOptions(ActionBar.DISPLAY_SHOW_CUSTOM);
        actionBar.setCustomView(R.layout.filtershow_actionbar);

        mSaveButton = actionBar.getCustomView();
        mSaveButton.setOnClickListener(new OnClickListener() {
            @Override
            public void onClick(View view) {
                saveImage();
            }
        });

        mImageLoader = new ImageLoader(this, getApplicationContext());

        listFilters = (LinearLayout) findViewById(R.id.listFilters);
        listBorders = (LinearLayout) findViewById(R.id.listBorders);
        listColors = (LinearLayout) findViewById(R.id.listColorsFx);

        mImageShow = (ImageShow) findViewById(R.id.imageShow);
        mImageCurves = (ImageCurves) findViewById(R.id.imageCurves);
        mImageStraighten = (ImageStraighten) findViewById(R.id.imageStraighten);
        mImageZoom = (ImageZoom) findViewById(R.id.imageZoom);
        mImageCrop = (ImageCrop) findViewById(R.id.imageCrop);
        mImageRotate = (ImageRotate) findViewById(R.id.imageRotate);
        mImageFlip = (ImageFlip) findViewById(R.id.imageFlip);
        mImageTinyPlanet = (ImageTinyPlanet) findViewById(R.id.imageTinyPlanet);
        mImageRedEyes = (ImageRedEyes) findViewById(R.id.imageRedEyes);
        mImageDraw = (ImageDraw) findViewById(R.id.imageDraw);

        mImageCrop.setAspectTextSize((int) getPixelsFromDip(18));
        ImageCrop.setTouchTolerance((int) getPixelsFromDip(25));
        ImageCrop.setMinCropSize((int) getPixelsFromDip(55));
        mImageViews.add(mImageShow);
        mImageViews.add(mImageCurves);
        mImageViews.add(mImageStraighten);
        mImageViews.add(mImageZoom);
        mImageViews.add(mImageCrop);
        mImageViews.add(mImageRotate);
        mImageViews.add(mImageFlip);
        mImageViews.add(mImageTinyPlanet);
        mImageViews.add(mImageRedEyes);
        for (ImageShow imageShow : mImageViews) {
            mImageLoader.addCacheListener(imageShow);
        }

        mListFx = findViewById(R.id.fxList);
        mListBorders = findViewById(R.id.bordersList);
        mListGeometry = findViewById(R.id.geometryList);
        mListFilterButtons = findViewById(R.id.filterButtonsList);
        mListColors = findViewById(R.id.colorsFxList);
        mListViews.add(mListFx);
        mListViews.add(mListBorders);
        mListViews.add(mListGeometry);
        mListViews.add(mListFilterButtons);
        mListViews.add(mListColors);

        mFxButton = (ImageButton) findViewById(R.id.fxButton);
        mBorderButton = (ImageButton) findViewById(R.id.borderButton);
        mGeometryButton = (ImageButton) findViewById(R.id.geometryButton);
        mColorsButton = (ImageButton) findViewById(R.id.colorsButton);

        mBottomPanelButtons.add(mFxButton);
        mBottomPanelButtons.add(mBorderButton);
        mBottomPanelButtons.add(mGeometryButton);
        mBottomPanelButtons.add(mColorsButton);

        mImageShow.setImageLoader(mImageLoader);
        mImageCurves.setImageLoader(mImageLoader);
        mImageStraighten.setImageLoader(mImageLoader);
        mImageZoom.setImageLoader(mImageLoader);
        mImageCrop.setImageLoader(mImageLoader);
        mImageRotate.setImageLoader(mImageLoader);
        mImageFlip.setImageLoader(mImageLoader);
        mImageTinyPlanet.setImageLoader(mImageLoader);
        mImageRedEyes.setImageLoader(mImageLoader);
        mImageDraw.setImageLoader(mImageLoader);

        mPanelController.setActivity(this);

        mPanelController.addImageView(findViewById(R.id.imageShow));
        mPanelController.addImageView(findViewById(R.id.imageCurves));
        mPanelController.addImageView(findViewById(R.id.imageStraighten));
        mPanelController.addImageView(findViewById(R.id.imageCrop));
        mPanelController.addImageView(findViewById(R.id.imageRotate));
        mPanelController.addImageView(findViewById(R.id.imageFlip));
        mPanelController.addImageView(findViewById(R.id.imageZoom));
        mPanelController.addImageView(findViewById(R.id.imageTinyPlanet));
        mPanelController.addImageView(findViewById(R.id.imageRedEyes));
        mPanelController.addImageView(findViewById(R.id.imageDraw));

        mPanelController.addPanel(mFxButton, mListFx, 0);
        mPanelController.addPanel(mBorderButton, mListBorders, 1);

        mPanelController.addPanel(mGeometryButton, mListGeometry, 2);
        mPanelController.addComponent(mGeometryButton, findViewById(R.id.straightenButton));
        mPanelController.addComponent(mGeometryButton, findViewById(R.id.cropButton));
        mPanelController.addComponent(mGeometryButton, findViewById(R.id.rotateButton));
        mPanelController.addComponent(mGeometryButton, findViewById(R.id.flipButton));
        mPanelController.addComponent(mGeometryButton, findViewById(R.id.redEyeButton));

        mPanelController.addPanel(mColorsButton, mListColors, 3);

        Vector<ImageFilter> filters = new Vector<ImageFilter>();
        FiltersManager.addFilters(filters, mImageLoader);

        for (ImageFilter filter : filters) {
            filter.setParameter(filter.getDefaultParameter());
            filter.setName(getString(filter.getTextId()));
            setupFilterButton(filter, listColors, mColorsButton);
        }
        mPanelController.addFilter(new ImageFilterRedEye());

        mPanelController.addView(findViewById(R.id.applyEffect));
        findViewById(R.id.resetOperationsButton).setOnClickListener(
                createOnClickResetOperationsButton());

        ListView operationsList = (ListView) findViewById(R.id.operationsList);
        operationsList.setAdapter(mMasterImage.getHistory());
        operationsList.setOnItemClickListener(this);
        ListView imageStateList = (ListView) findViewById(R.id.imageStateList);
        imageStateList.setAdapter(mMasterImage.getState());
        mImageLoader.setAdapter(mMasterImage.getHistory());

        fillListImages(listFilters);
        fillListBorders(listBorders);

        SeekBar seekBar = (SeekBar) findViewById(R.id.filterSeekBar);
        seekBar.setMax(SEEK_BAR_MAX);

        mImageShow.setSeekBar(seekBar);
        mImageZoom.setSeekBar(seekBar);
        mImageTinyPlanet.setSeekBar(seekBar);
        mPanelController.setRowPanel(findViewById(R.id.secondRowPanel));
        mPanelController.setUtilityPanel(this, findViewById(R.id.filterButtonsList),
                findViewById(R.id.panelAccessoryViewList),
                findViewById(R.id.applyEffect));

        mPanelController.setCurrentPanel(mFxButton);
        Intent intent = getIntent();
        if (intent.getBooleanExtra(LAUNCH_FULLSCREEN, false)) {
            getWindow().addFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN);
        }

        if (intent.getData() != null) {
            startLoadBitmap(intent.getData());
        } else {
            pickImage();
        }

        // Handle behavior for various actions
        String action = intent.getAction();
        if (action.equalsIgnoreCase(CROP_ACTION)) {
            Bundle extras = intent.getExtras();
            if (extras != null) {
                mCropExtras = new CropExtras(extras.getInt(CropExtras.KEY_OUTPUT_X, 0),
                        extras.getInt(CropExtras.KEY_OUTPUT_Y, 0),
                        extras.getBoolean(CropExtras.KEY_SCALE, true) &&
                                extras.getBoolean(CropExtras.KEY_SCALE_UP_IF_NEEDED, false),
                        extras.getInt(CropExtras.KEY_ASPECT_X, 0),
                        extras.getInt(CropExtras.KEY_ASPECT_Y, 0),
                        extras.getBoolean(CropExtras.KEY_SET_AS_WALLPAPER, false),
                        extras.getBoolean(CropExtras.KEY_RETURN_DATA, false),
                        (Uri) extras.getParcelable(MediaStore.EXTRA_OUTPUT),
                        extras.getString(CropExtras.KEY_OUTPUT_FORMAT),
                        extras.getBoolean(CropExtras.KEY_SHOW_WHEN_LOCKED, false),
                        extras.getFloat(CropExtras.KEY_SPOTLIGHT_X),
                        extras.getFloat(CropExtras.KEY_SPOTLIGHT_Y));

                if (mCropExtras.getShowWhenLocked()) {
                    getWindow().addFlags(WindowManager.LayoutParams.FLAG_SHOW_WHEN_LOCKED);
                }
                mImageShow.getImagePreset().mGeoData.setCropExtras(mCropExtras);

                mImageCrop.setExtras(mCropExtras);
                String s = getString(R.string.Fixed);
                mImageCrop.setAspectString(s);
                mImageCrop.setCropActionFlag(true);
                mPanelController.setFixedAspect(mCropExtras.getAspectX() > 0
                        && mCropExtras.getAspectY() > 0);
            }
            mPanelController.showComponent(findViewById(R.id.cropButton));
        } else if (action.equalsIgnoreCase(TINY_PLANET_ACTION)) {
            mPanelController.showComponent(findViewById(R.id.tinyplanetButton));
        }
    }

    private void startLoadBitmap(Uri uri) {
        final View filters = findViewById(R.id.filtersPanel);
        final View loading = findViewById(R.id.loading);
        loading.setVisibility(View.VISIBLE);
        filters.setVisibility(View.INVISIBLE);
        View tinyPlanetView = findViewById(R.id.tinyplanetButton);
        if (tinyPlanetView != null) {
            tinyPlanetView.setVisibility(View.GONE);
        }
        mLoadBitmapTask = new LoadBitmapTask(tinyPlanetView);
        mLoadBitmapTask.execute(uri);
    }

    private class LoadBitmapTask extends AsyncTask<Uri, Boolean, Boolean> {
        View mTinyPlanetButton;
        int mBitmapSize;

        public LoadBitmapTask(View button) {
            mTinyPlanetButton = button;
            mBitmapSize = getScreenImageSize();
        }

        @Override
        protected Boolean doInBackground(Uri... params) {
            if (!mImageLoader.loadBitmap(params[0], mBitmapSize)) {
                return false;
            }
            publishProgress(mImageLoader.queryLightCycle360());
            return true;
        }

        @Override
        protected void onProgressUpdate(Boolean... values) {
            super.onProgressUpdate(values);
            if (isCancelled()) {
                return;
            }
            final View filters = findViewById(R.id.filtersPanel);
            final View loading = findViewById(R.id.loading);
            loading.setVisibility(View.GONE);
            filters.setVisibility(View.VISIBLE);
            if (values[0]) {
                mTinyPlanetButton.setVisibility(View.VISIBLE);
            }
        }

        @Override
        protected void onPostExecute(Boolean result) {
            if (isCancelled()) {
                return;
            }
            if (!result) {
                cannotLoadImage();
            }

            Bitmap bmap = mImageShow.getFilteredImage();
            if (bmap != null && bmap.getWidth() > 0 && bmap.getHeight() > 0) {
                float w = bmap.getWidth();
                float h = bmap.getHeight();
                float f = mIconSeedSize / Math.min(w, h);
                w = w * f;
                h = h * f;
                bmap = Bitmap.createScaledBitmap(bmap, (int) w, (int) h, true);

                int num_colors_buttons = listColors.getChildCount();
                for (int i = 0; i < num_colors_buttons; i++) {
                    FilterIconButton b = (FilterIconButton) listColors.getChildAt(i);

                    b.setIcon(bmap);
                }
                int num_filters_buttons = listFilters.getChildCount();
                for (int i = 0; i < num_filters_buttons; i++) {
                    FilterIconButton b = (FilterIconButton) listFilters.getChildAt(i);

                    b.setIcon(bmap);
                }
                int num_borders_buttons = listBorders.getChildCount();
                for (int i = 0; i < num_borders_buttons; i++) {
                    FilterIconButton b = (FilterIconButton) listBorders.getChildAt(i);

                    b.setIcon(bmap);
                }

            }
            mLoadBitmapTask = null;
            super.onPostExecute(result);
        }

    }

    @Override
    protected void onDestroy() {
        if (mLoadBitmapTask != null) {
            mLoadBitmapTask.cancel(false);
        }
        super.onDestroy();
    }

    private int translateMainPanel(View viewPanel) {
        int accessoryPanelWidth = viewPanel.getWidth();
        int mainViewWidth = findViewById(R.id.mainView).getWidth();
        int mainPanelWidth = mImageShow.getDisplayedImageBounds().width();
        if (mainPanelWidth == 0) {
            mainPanelWidth = mainViewWidth;
        }
        int filtersPanelWidth = findViewById(R.id.filtersPanel).getWidth();
        if (mainPanelWidth < filtersPanelWidth) {
            mainPanelWidth = filtersPanelWidth;
        }
        int leftOver = mainViewWidth - mainPanelWidth - accessoryPanelWidth;
        if (leftOver < 0) {
            return -accessoryPanelWidth;
        }
        return 0;
    }

    private int getScreenImageSize() {
        DisplayMetrics metrics = new DisplayMetrics();
        Display display = getWindowManager().getDefaultDisplay();
        Point size = new Point();
        display.getSize(size);
        display.getMetrics(metrics);
        int msize = Math.min(size.x, size.y);
        return (133 * msize) / metrics.densityDpi;
    }

    private void showSavingProgress(String albumName) {
        ProgressDialog progress;
        if (mSavingProgressDialog != null) {
            progress = mSavingProgressDialog.get();
            if (progress != null) {
                progress.show();
                return;
            }
        }
        // TODO: Allow cancellation of the saving process
        String progressText;
        if (albumName == null) {
            progressText = getString(R.string.saving_image);
        } else {
            progressText = getString(R.string.filtershow_saving_image, albumName);
        }
        progress = ProgressDialog.show(this, "", progressText, true, false);
        mSavingProgressDialog = new WeakReference<ProgressDialog>(progress);
    }

    private void hideSavingProgress() {
        if (mSavingProgressDialog != null) {
            ProgressDialog progress = mSavingProgressDialog.get();
            if (progress != null)
                progress.dismiss();
        }
    }

    public void completeSaveImage(Uri saveUri) {
        if (mSharingImage && mSharedOutputFile != null) {
            // Image saved, we unblock the content provider
            Uri uri = Uri.withAppendedPath(SharedImageProvider.CONTENT_URI,
                    Uri.encode(mSharedOutputFile.getAbsolutePath()));
            ContentValues values = new ContentValues();
            values.put(SharedImageProvider.PREPARE, false);
            getContentResolver().insert(uri, values);
        }
        setResult(RESULT_OK, new Intent().setData(saveUri));
        hideSavingProgress();
        finish();
    }

    @Override
    public boolean onShareTargetSelected(ShareActionProvider arg0, Intent arg1) {
        // First, let's tell the SharedImageProvider that it will need to wait
        // for the image
        Uri uri = Uri.withAppendedPath(SharedImageProvider.CONTENT_URI,
                Uri.encode(mSharedOutputFile.getAbsolutePath()));
        ContentValues values = new ContentValues();
        values.put(SharedImageProvider.PREPARE, true);
        getContentResolver().insert(uri, values);
        mSharingImage = true;

        // Process and save the image in the background.
        showSavingProgress(null);
        mImageShow.saveImage(this, mSharedOutputFile);
        return true;
    }

    private Intent getDefaultShareIntent() {
        Intent intent = new Intent(Intent.ACTION_SEND);
        intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_WHEN_TASK_RESET);
        intent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);
        intent.setType(SharedImageProvider.MIME_TYPE);
        mSharedOutputFile = SaveCopyTask.getNewFile(this, mImageLoader.getUri());
        Uri uri = Uri.withAppendedPath(SharedImageProvider.CONTENT_URI,
                Uri.encode(mSharedOutputFile.getAbsolutePath()));
        intent.putExtra(Intent.EXTRA_STREAM, uri);
        return intent;
    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        getMenuInflater().inflate(R.menu.filtershow_activity_menu, menu);
        MenuItem showHistory = menu.findItem(R.id.operationsButton);
        if (mShowingHistoryPanel) {
            showHistory.setTitle(R.string.hide_history_panel);
        } else {
            showHistory.setTitle(R.string.show_history_panel);
        }
        MenuItem showState = menu.findItem(R.id.showImageStateButton);
        if (mShowingImageStatePanel) {
            showState.setTitle(R.string.hide_imagestate_panel);
        } else {
            showState.setTitle(R.string.show_imagestate_panel);
        }
        mShareActionProvider = (ShareActionProvider) menu.findItem(R.id.menu_share)
                .getActionProvider();
        mShareActionProvider.setShareIntent(getDefaultShareIntent());
        mShareActionProvider.setOnShareTargetSelectedListener(this);

        MenuItem undoItem = menu.findItem(R.id.undoButton);
        MenuItem redoItem = menu.findItem(R.id.redoButton);
        MenuItem resetItem = menu.findItem(R.id.resetHistoryButton);
        mMasterImage.getHistory().setMenuItems(undoItem, redoItem, resetItem);
        return true;
    }

    @Override
    public void onPause() {
        super.onPause();
        if (mShareActionProvider != null) {
            mShareActionProvider.setOnShareTargetSelectedListener(null);
        }
    }

    @Override
    public void onResume() {
        super.onResume();
        if (mShareActionProvider != null) {
            mShareActionProvider.setOnShareTargetSelectedListener(this);
        }
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        switch (item.getItemId()) {
            case R.id.undoButton: {
                HistoryAdapter adapter = mMasterImage.getHistory();
                int position = adapter.undo();
                mMasterImage.onHistoryItemClick(position);
                mImageShow.showToast("Undo");
                invalidateViews();
                return true;
            }
            case R.id.redoButton: {
                HistoryAdapter adapter = mMasterImage.getHistory();
                int position = adapter.redo();
                mMasterImage.onHistoryItemClick(position);
                mImageShow.showToast("Redo");
                invalidateViews();
                return true;
            }
            case R.id.resetHistoryButton: {
                resetHistory();
                return true;
            }
            case R.id.showImageStateButton: {
                toggleImageStatePanel();
                return true;
            }
            case R.id.operationsButton: {
                toggleHistoryPanel();
                return true;
            }
            case android.R.id.home: {
                saveImage();
                return true;
            }
        }
        return false;
    }

    public void enableSave(boolean enable) {
        if (mSaveButton != null)
            mSaveButton.setEnabled(enable);
    }

    public FilterIconButton setupFilterButton(ImageFilter filter, LinearLayout panel, View button) {
        LayoutInflater inflater =
                (LayoutInflater) getSystemService(Context.LAYOUT_INFLATER_SERVICE);
        FilterIconButton icon = (FilterIconButton) inflater.inflate(R.layout.filtericonbutton,
                panel, false);
        String text = filter.getName();
        if (filter instanceof ImageFilterBorder || filter instanceof ImageFilterParametricBorder) {
            text = "";
        }
        icon.setup(text, filter, this, panel);
        icon.setId(filter.getButtonId());
        mPanelController.addComponent(button, icon);
        mPanelController.addFilter(filter);
        panel.addView(icon);
        return icon;
    }

    private void fillListImages(LinearLayout listFilters) {
        // TODO: use listview
        // TODO: load the filters straight from the filesystem

        ImageFilterFx[] fxArray = new ImageFilterFx[18];
        int p = 0;

        int[] drawid = {
                R.drawable.filtershow_fx_0005_punch,
                R.drawable.filtershow_fx_0000_vintage,
                R.drawable.filtershow_fx_0004_bw_contrast,
                R.drawable.filtershow_fx_0002_bleach,
                R.drawable.filtershow_fx_0001_instant,
                R.drawable.filtershow_fx_0007_washout,
                R.drawable.filtershow_fx_0003_blue_crush,
                R.drawable.filtershow_fx_0008_washout_color,
                R.drawable.filtershow_fx_0006_x_process
        };

        int[] fxNameid = {
                R.string.ffx_punch,
                R.string.ffx_vintage,
                R.string.ffx_bw_contrast,
                R.string.ffx_bleach,
                R.string.ffx_instant,
                R.string.ffx_washout,
                R.string.ffx_blue_crush,
                R.string.ffx_washout_color,
                R.string.ffx_x_process
        };

        ImagePreset preset = new ImagePreset(getString(R.string.history_original)); // empty
        preset.setImageLoader(mImageLoader);

        BitmapFactory.Options o = new BitmapFactory.Options();
        o.inScaled = false;

        for (int i = 0; i < drawid.length; i++) {
            Bitmap b = BitmapFactory.decodeResource(getResources(), drawid[i], o);
            fxArray[p++] = new ImageFilterFx(b, getString(fxNameid[i]), fxNameid[i]);
        }

        ImageFilterFx nullFilter = new ImageFilterFx(null, getString(R.string.none), R.string.none);
        mNullFxFilter = setupFilterButton(nullFilter, listFilters, mFxButton);
        mNullFxFilter.setSelected(true);

        for (int i = 0; i < p; i++) {
            setupFilterButton(fxArray[i], listFilters, mFxButton);
        }

        // Default preset (original)
        mMasterImage.setPreset(preset, true);
    }

    private void fillListBorders(LinearLayout listBorders) {
        // TODO: use listview
        // TODO: load the borders straight from the filesystem
        int p = 0;
        ImageFilter[] borders = new ImageFilter[12];
        borders[p++] = new ImageFilterBorder(null);

        Drawable npd1 = getResources().getDrawable(R.drawable.filtershow_border_4x5);
        borders[p++] = new ImageFilterBorder(npd1);
        Drawable npd2 = getResources().getDrawable(R.drawable.filtershow_border_brush);
        borders[p++] = new ImageFilterBorder(npd2);
        Drawable npd3 = getResources().getDrawable(R.drawable.filtershow_border_grunge);
        borders[p++] = new ImageFilterBorder(npd3);
        Drawable npd4 = getResources().getDrawable(R.drawable.filtershow_border_sumi_e);
        borders[p++] = new ImageFilterBorder(npd4);
        Drawable npd5 = getResources().getDrawable(R.drawable.filtershow_border_tape);
        borders[p++] = new ImageFilterBorder(npd5);
        borders[p++] = new ImageFilterParametricBorder(Color.BLACK, mImageBorderSize, 0);
        borders[p++] = new ImageFilterParametricBorder(Color.BLACK, mImageBorderSize,
                mImageBorderSize);
        borders[p++] = new ImageFilterParametricBorder(Color.WHITE, mImageBorderSize, 0);
        borders[p++] = new ImageFilterParametricBorder(Color.WHITE, mImageBorderSize,
                mImageBorderSize);
        int creamColor = Color.argb(255, 237, 237, 227);
        borders[p++] = new ImageFilterParametricBorder(creamColor, mImageBorderSize, 0);
        borders[p++] = new ImageFilterParametricBorder(creamColor, mImageBorderSize,
                mImageBorderSize);

        for (int i = 0; i < p; i++) {
            borders[i].setName(getString(R.string.borders));
            FilterIconButton b = setupFilterButton(borders[i], listBorders, mBorderButton);
            if (i == 0) {
                mNullBorderFilter = b;
                mNullBorderFilter.setSelected(true);
            }
        }
    }

    // //////////////////////////////////////////////////////////////////////////////
    // Some utility functions
    // TODO: finish the cleanup.

    public void showOriginalViews(boolean value) {
        for (ImageShow views : mImageViews) {
            views.showOriginal(value);
        }
    }

    public void invalidateViews() {
        for (ImageShow views : mImageViews) {
            views.invalidate();
            views.updateImage();
        }
    }

    public void hideListViews() {
        for (View view : mListViews) {
            view.setVisibility(View.GONE);
        }
    }

    public void hideImageViews() {
        mImageShow.setShowControls(false); // reset
        for (View view : mImageViews) {
            view.setVisibility(View.GONE);
        }
    }

    public void unselectBottomPanelButtons() {
        for (ImageButton button : mBottomPanelButtons) {
            button.setSelected(false);
        }
    }

    public void unselectPanelButtons(Vector<ImageButton> buttons) {
        for (ImageButton button : buttons) {
            button.setSelected(false);
        }
    }

    public void disableFilterButtons() {
        for (ImageButton b : mBottomPanelButtons) {
            b.setEnabled(false);
            b.setClickable(false);
            b.setAlpha(0.4f);
        }
    }

    public void enableFilterButtons() {
        for (ImageButton b : mBottomPanelButtons) {
            b.setEnabled(true);
            b.setClickable(true);
            b.setAlpha(1.0f);
        }
    }

    // //////////////////////////////////////////////////////////////////////////////
    // imageState panel...

    public boolean isShowingHistoryPanel() {
        return mShowingHistoryPanel;
    }

    private void toggleImageStatePanel() {
        final View view = findViewById(R.id.mainPanel);
        final View viewList = findViewById(R.id.imageStatePanel);

        if (mShowingHistoryPanel) {
            findViewById(R.id.historyPanel).setVisibility(View.INVISIBLE);
            mShowingHistoryPanel = false;
        }

        int translate = translateMainPanel(viewList);
        if (!mShowingImageStatePanel) {
            mShowingImageStatePanel = true;
            view.animate().setDuration(200).x(translate)
                    .withLayer().withEndAction(new Runnable() {
                        @Override
                        public void run() {
                            viewList.setAlpha(0);
                            viewList.setVisibility(View.VISIBLE);
                            viewList.animate().setDuration(100)
                                    .alpha(1.0f).start();
                        }
                    }).start();
        } else {
            mShowingImageStatePanel = false;
            viewList.setVisibility(View.INVISIBLE);
            view.animate().setDuration(200).x(0).withLayer()
                    .start();
        }
        invalidateOptionsMenu();
    }

    @Override
    public void onConfigurationChanged(Configuration newConfig)
    {
        super.onConfigurationChanged(newConfig);
        if (mShowingHistoryPanel) {
            toggleHistoryPanel();
        }
    }

    public void setupMasterImage() {
        HistoryAdapter mHistoryAdapter = new HistoryAdapter(
                this, R.layout.filtershow_history_operation_row,
                R.id.rowTextView);
        ImageStateAdapter mImageStateAdapter = new ImageStateAdapter(this,
                R.layout.filtershow_imagestate_row);

        mMasterImage.setHistoryAdapter(mHistoryAdapter);
        mMasterImage.setStateAdapter(mImageStateAdapter);
        mMasterImage.setActivity(this);
    }

    // //////////////////////////////////////////////////////////////////////////////
    // history panel...

    public void toggleHistoryPanel() {
        final View view = findViewById(R.id.mainPanel);
        final View viewList = findViewById(R.id.historyPanel);

        if (mShowingImageStatePanel) {
            findViewById(R.id.imageStatePanel).setVisibility(View.INVISIBLE);
            mShowingImageStatePanel = false;
        }

        int translate = translateMainPanel(viewList);
        if (!mShowingHistoryPanel) {
            mShowingHistoryPanel = true;
            view.animate().setDuration(200).x(translate)
                    .withLayer().withEndAction(new Runnable() {
                        @Override
                        public void run() {
                            viewList.setAlpha(0);
                            viewList.setVisibility(View.VISIBLE);
                            viewList.animate().setDuration(100)
                                    .alpha(1.0f).start();
                        }
                    }).start();
        } else {
            mShowingHistoryPanel = false;
            viewList.setVisibility(View.INVISIBLE);
            view.animate().setDuration(200).x(0).withLayer()
                    .start();
        }
        invalidateOptionsMenu();
    }

    public void dispatchNullFilterClick() {
        mNullFxFilter.onClick(mNullFxFilter);
        mNullBorderFilter.onClick(mNullBorderFilter);
    }

    void resetHistory() {
        dispatchNullFilterClick();
        HistoryAdapter adapter = mMasterImage.getHistory();
        adapter.reset();
        ImagePreset original = new ImagePreset(adapter.getItem(0));
        mMasterImage.setPreset(original, true);
        mPanelController.resetParameters();
        invalidateViews();
    }

    // reset button in the history panel.
    private OnClickListener createOnClickResetOperationsButton() {
        return new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                resetHistory();
            }
        };
    }

    @Override
    public void onBackPressed() {
        if (mPanelController.onBackPressed()) {
            saveImage();
        }
    }

    public void cannotLoadImage() {
        CharSequence text = getString(R.string.cannot_load_image);
        Toast toast = Toast.makeText(this, text, Toast.LENGTH_SHORT);
        toast.show();
        finish();
    }

    // //////////////////////////////////////////////////////////////////////////////

    public float getPixelsFromDip(float value) {
        Resources r = getResources();
        return TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, value,
                r.getDisplayMetrics());
    }

    public void useFilter(ImageFilter filter) {
        if (mMasterImage.getCurrentFilter() == filter) {
            return;
        }
        mMasterImage.setCurrentFilter(filter);
        ImagePreset oldPreset = mImageShow.getImagePreset();
        ImagePreset copy = new ImagePreset(oldPreset);
        // TODO: use a numerical constant instead.

        copy.add(filter);

        mMasterImage.setPreset(copy, true);
        invalidateViews();
    }

    @Override
    public void onItemClick(AdapterView<?> parent, View view, int position,
            long id) {
        mMasterImage.onHistoryItemClick(position);
        invalidateViews();
    }

    public void pickImage() {
        Intent intent = new Intent();
        intent.setType("image/*");
        intent.setAction(Intent.ACTION_GET_CONTENT);
        startActivityForResult(Intent.createChooser(intent, getString(R.string.select_image)),
                SELECT_PICTURE);
    }

    @Override
    public void onActivityResult(int requestCode, int resultCode, Intent data) {
        if (resultCode == RESULT_OK) {
            if (requestCode == SELECT_PICTURE) {
                Uri selectedImageUri = data.getData();
                startLoadBitmap(selectedImageUri);
            }
        }
    }

    private boolean mSaveToExtraUri = false;
    private boolean mSaveAsWallpaper = false;
    private boolean mReturnAsExtra = false;
    private boolean outputted = false;

    public void saveImage() {
        if (mCropExtras != null) {
            if (mCropExtras.getExtraOutput() != null) {
                mSaveToExtraUri = true;
                outputted = true;
            }
            if (mCropExtras.getSetAsWallpaper()) {
                mSaveAsWallpaper = true;
                outputted = true;
            }
            if (mCropExtras.getReturnData()) {

                mReturnAsExtra = true;
                outputted = true;
            }

            if (outputted) {
                mImageShow.getImagePreset().mGeoData.setUseCropExtrasFlag(true);
                showSavingProgress(null);
                mImageShow.returnFilteredResult(this);
            }
        }
        if (!outputted) {
            if (mImageShow.hasModifications()) {
                // Get the name of the album, to which the image will be saved
                File saveDir = SaveCopyTask.getFinalSaveDirectory(this, mImageLoader.getUri());
                int bucketId = GalleryUtils.getBucketId(saveDir.getPath());
                String albumName = LocalAlbum.getLocalizedName(getResources(), bucketId, null);
                showSavingProgress(albumName);
                mImageShow.saveImage(this, null);
            } else {
                done();
            }
        }
    }

    public void onFilteredResult(Bitmap filtered) {
        Intent intent = new Intent();
        intent.putExtra(CropExtras.KEY_CROPPED_RECT, mImageShow.getImageCropBounds());
        if (mSaveToExtraUri) {
            mImageShow.saveToUri(filtered, mCropExtras.getExtraOutput(),
                    mCropExtras.getOutputFormat(), this);
        }
        if (mSaveAsWallpaper) {
            try {
                WallpaperManager.getInstance(this).setBitmap(filtered);
            } catch (IOException e) {
                Log.w(LOGTAG, "fail to set wall paper", e);
            }
        }
        if (mReturnAsExtra) {
            if (filtered != null) {
                int bmapSize = filtered.getRowBytes() * filtered.getHeight();
                /*
                 * Max size of Binder transaction buffer is 1Mb, so constrain
                 * Bitmap to be somewhat less than this, otherwise we get
                 * TransactionTooLargeExceptions.
                 */
                if (bmapSize > MAX_BMAP_IN_INTENT) {
                    Log.w(LOGTAG, "Bitmap too large to be returned via intent");
                } else {
                    intent.putExtra(CropExtras.KEY_DATA, filtered);
                }
            }
        }
        setResult(RESULT_OK, intent);
        if (!mSaveToExtraUri) {
            done();
        }
    }

    public void done() {
        if (outputted) {
            hideSavingProgress();
        }
        finish();
    }

    static {
        System.loadLibrary("jni_filtershow_filters");
    }

}