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.app.ActionBar;
import android.app.AlertDialog;
import android.app.ProgressDialog;
import android.content.ComponentName;
import android.content.ContentValues;
import android.content.Context;
import android.content.DialogInterface;
import android.content.Intent;
import android.content.ServiceConnection;
import android.content.pm.ActivityInfo;
import android.content.res.Configuration;
import android.content.res.Resources;
import android.graphics.Bitmap;
import android.graphics.Matrix;
import android.graphics.Rect;
import android.graphics.RectF;
import android.graphics.drawable.Drawable;
import android.net.Uri;
import android.os.AsyncTask;
import android.os.Bundle;
import android.os.CancellationSignal;
import android.os.Handler;
import android.os.IBinder;
import android.support.v4.app.DialogFragment;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentActivity;
import android.support.v4.app.FragmentTransaction;
import android.util.DisplayMetrics;
import android.util.Log;
import android.util.TypedValue;
import android.view.Menu;
import android.view.MenuItem;
import android.view.MotionEvent;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.ViewPropertyAnimator;
import android.view.WindowManager;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.FrameLayout;
import android.widget.ShareActionProvider;
import android.widget.ShareActionProvider.OnShareTargetSelectedListener;
import android.widget.Toast;

import com.android.gallery3d.R;
import com.android.gallery3d.app.PhotoPage;
import com.android.gallery3d.data.LocalAlbum;
import com.android.gallery3d.filtershow.cache.ImageLoader;
import com.android.gallery3d.filtershow.category.Action;
import com.android.gallery3d.filtershow.category.CategoryAdapter;
import com.android.gallery3d.filtershow.category.CategoryView;
import com.android.gallery3d.filtershow.category.MainPanel;
import com.android.gallery3d.filtershow.category.SwipableView;
import com.android.gallery3d.filtershow.data.UserPresetsManager;
import com.android.gallery3d.filtershow.editors.BasicEditor;
import com.android.gallery3d.filtershow.editors.Editor;
import com.android.gallery3d.filtershow.editors.EditorChanSat;
import com.android.gallery3d.filtershow.editors.EditorCrop;
import com.android.gallery3d.filtershow.editors.EditorDraw;
import com.android.gallery3d.filtershow.editors.EditorGrad;
import com.android.gallery3d.filtershow.editors.EditorManager;
import com.android.gallery3d.filtershow.editors.EditorMirror;
import com.android.gallery3d.filtershow.editors.EditorPanel;
import com.android.gallery3d.filtershow.editors.EditorRedEye;
import com.android.gallery3d.filtershow.editors.EditorRotate;
import com.android.gallery3d.filtershow.editors.EditorStraighten;
import com.android.gallery3d.filtershow.editors.EditorTinyPlanet;
import com.android.gallery3d.filtershow.editors.ImageOnlyEditor;
import com.android.gallery3d.filtershow.filters.FilterMirrorRepresentation;
import com.android.gallery3d.filtershow.filters.FilterRepresentation;
import com.android.gallery3d.filtershow.filters.FilterRotateRepresentation;
import com.android.gallery3d.filtershow.filters.FilterUserPresetRepresentation;
import com.android.gallery3d.filtershow.filters.FiltersManager;
import com.android.gallery3d.filtershow.filters.ImageFilter;
import com.android.gallery3d.filtershow.history.HistoryItem;
import com.android.gallery3d.filtershow.history.HistoryManager;
import com.android.gallery3d.filtershow.imageshow.ImageShow;
import com.android.gallery3d.filtershow.imageshow.MasterImage;
import com.android.gallery3d.filtershow.imageshow.Spline;
import com.android.gallery3d.filtershow.info.InfoPanel;
import com.android.gallery3d.filtershow.pipeline.CachingPipeline;
import com.android.gallery3d.filtershow.pipeline.ImagePreset;
import com.android.gallery3d.filtershow.pipeline.ProcessingService;
import com.android.gallery3d.filtershow.presets.PresetManagementDialog;
import com.android.gallery3d.filtershow.presets.UserPresetsAdapter;
import com.android.gallery3d.filtershow.provider.SharedImageProvider;
import com.android.gallery3d.filtershow.state.StateAdapter;
import com.android.gallery3d.filtershow.tools.SaveImage;
import com.android.gallery3d.filtershow.tools.XmpPresets;
import com.android.gallery3d.filtershow.tools.XmpPresets.XMresults;
import com.android.gallery3d.filtershow.ui.ExportDialog;
import com.android.gallery3d.filtershow.ui.FramedTextButton;
import com.android.gallery3d.util.GalleryUtils;
import com.android.gallery3d.util.PrintJob;
import com.android.gallery3d.util.UsageStatistics;
import com.android.photos.data.GalleryBitmapPool;

import java.io.File;
import java.io.FileDescriptor;
import java.io.FileOutputStream;
import java.lang.ref.WeakReference;
import java.util.ArrayList;
import java.util.Vector;

public class FilterShowActivity extends FragmentActivity implements OnItemClickListener,
        OnShareTargetSelectedListener {

    private String mAction = "";
    MasterImage mMasterImage = null;

    private static final long LIMIT_SUPPORTS_HIGHRES = 134217728; // 128Mb

    public static final String TINY_PLANET_ACTION = "com.android.camera.action.TINY_PLANET";
    public static final String LAUNCH_FULLSCREEN = "launch-fullscreen";
    private ImageShow mImageShow = null;

    private View mSaveButton = null;

    private EditorPlaceHolder mEditorPlaceHolder = new EditorPlaceHolder(this);

    private static final int SELECT_PICTURE = 1;
    private static final String LOGTAG = "FilterShowActivity";

    private boolean mShowingTinyPlanet = false;
    private boolean mShowingImageStatePanel = false;
    private boolean mShowingVersionsPanel = false;
    private boolean mShowingInformationPanel = false;

    private final Vector<ImageShow> mImageViews = new Vector<ImageShow>();

    private ShareActionProvider mShareActionProvider;
    private File mSharedOutputFile = null;

    private boolean mSharingImage = false;

    private WeakReference<ProgressDialog> mSavingProgressDialog;

    private LoadBitmapTask mLoadBitmapTask;

    private Uri mOriginalImageUri = null;
    private ImagePreset mOriginalPreset = null;

    private Uri mSelectedImageUri = null;

    private UserPresetsManager mUserPresetsManager = null;
    private UserPresetsAdapter mUserPresetsAdapter = null;
    private CategoryAdapter mCategoryLooksAdapter = null;
    private CategoryAdapter mCategoryBordersAdapter = null;
    private CategoryAdapter mCategoryGeometryAdapter = null;
    private CategoryAdapter mCategoryFiltersAdapter = null;
    private CategoryAdapter mCategoryVersionsAdapter = null;
    private int mCurrentPanel = MainPanel.LOOKS;
    private Vector<FilterUserPresetRepresentation> mVersions =
            new Vector<FilterUserPresetRepresentation>();
    private int mVersionsCounter = 0;

    private boolean mHandlingSwipeButton = false;
    private View mHandledSwipeView = null;
    private float mHandledSwipeViewLastDelta = 0;
    private float mSwipeStartX = 0;
    private float mSwipeStartY = 0;

    private ProcessingService mBoundService;
    private boolean mIsBound = false;

    public ProcessingService getProcessingService() {
        return mBoundService;
    }

    public boolean isSimpleEditAction() {
        return !PhotoPage.ACTION_NEXTGEN_EDIT.equalsIgnoreCase(mAction);
    }

    private ServiceConnection mConnection = new ServiceConnection() {
        @Override
        public void onServiceConnected(ComponentName className, IBinder service) {
            /*
             * This is called when the connection with the service has been
             * established, giving us the service object we can use to
             * interact with the service.  Because we have bound to a explicit
             * service that we know is running in our own process, we can
             * cast its IBinder to a concrete class and directly access it.
             */
            mBoundService = ((ProcessingService.LocalBinder)service).getService();
            mBoundService.setFiltershowActivity(FilterShowActivity.this);
            mBoundService.onStart();
        }

        @Override
        public void onServiceDisconnected(ComponentName className) {
            /*
             * This is called when the connection with the service has been
             * unexpectedly disconnected -- that is, its process crashed.
             * Because it is running in our same process, we should never
             * see this happen.
             */
            mBoundService = null;
        }
    };

    void doBindService() {
        /*
         * Establish a connection with the service.  We use an explicit
         * class name because we want a specific service implementation that
         * we know will be running in our own process (and thus won't be
         * supporting component replacement by other applications).
         */
        bindService(new Intent(FilterShowActivity.this, ProcessingService.class),
                mConnection, Context.BIND_AUTO_CREATE);
        mIsBound = true;
    }

    void doUnbindService() {
        if (mIsBound) {
            // Detach our existing connection.
            unbindService(mConnection);
            mIsBound = false;
        }
    }

    private void setupPipeline() {
        doBindService();
        ImageFilter.setActivityForMemoryToasts(this);
        mUserPresetsManager = new UserPresetsManager(this);
        mUserPresetsAdapter = new UserPresetsAdapter(this);
    }

    public void updateUIAfterServiceStarted() {
        fillCategories();
        loadMainPanel();
        setDefaultPreset();
        extractXMPData();
        processIntent();
    }

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

        boolean onlyUsePortrait = getResources().getBoolean(R.bool.only_use_portrait);
        if (onlyUsePortrait) {
            setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);
        }
        MasterImage.setMaster(mMasterImage);

        clearGalleryBitmapPool();
        setupPipeline();

        setupMasterImage();
        setDefaultValues();
        fillEditors();

        loadXML();
        UsageStatistics.onContentViewChanged(UsageStatistics.COMPONENT_EDITOR, "Main");
        UsageStatistics.onEvent(UsageStatistics.COMPONENT_EDITOR,
                UsageStatistics.CATEGORY_LIFECYCLE, UsageStatistics.LIFECYCLE_START);
    }

    public boolean isShowingImageStatePanel() {
        return mShowingImageStatePanel;
    }

    public void loadMainPanel() {
        if (findViewById(R.id.main_panel_container) == null) {
            return;
        }
        MainPanel panel = new MainPanel();
        FragmentTransaction transaction = getSupportFragmentManager().beginTransaction();
        transaction.replace(R.id.main_panel_container, panel, MainPanel.FRAGMENT_TAG);
        transaction.commit();
    }

    public void loadEditorPanel(FilterRepresentation representation,
                                final Editor currentEditor) {
        if (representation.getEditorId() == ImageOnlyEditor.ID) {
            currentEditor.reflectCurrentFilter();
            return;
        }
        final int currentId = currentEditor.getID();
        Runnable showEditor = new Runnable() {
            @Override
            public void run() {
                EditorPanel panel = new EditorPanel();
                panel.setEditor(currentId);
                FragmentTransaction transaction = getSupportFragmentManager().beginTransaction();
                transaction.remove(getSupportFragmentManager().findFragmentByTag(MainPanel.FRAGMENT_TAG));
                transaction.replace(R.id.main_panel_container, panel, MainPanel.FRAGMENT_TAG);
                transaction.commit();
            }
        };
        Fragment main = getSupportFragmentManager().findFragmentByTag(MainPanel.FRAGMENT_TAG);
        boolean doAnimation = false;
        if (mShowingImageStatePanel
                && getResources().getConfiguration().orientation == Configuration.ORIENTATION_PORTRAIT) {
            doAnimation = true;
        }
        if (doAnimation && main != null && main instanceof MainPanel) {
            MainPanel mainPanel = (MainPanel) main;
            View container = mainPanel.getView().findViewById(R.id.category_panel_container);
            View bottom = mainPanel.getView().findViewById(R.id.bottom_panel);
            int panelHeight = container.getHeight() + bottom.getHeight();
            ViewPropertyAnimator anim = mainPanel.getView().animate();
            anim.translationY(panelHeight).start();
            final Handler handler = new Handler();
            handler.postDelayed(showEditor, anim.getDuration());
        } else {
            showEditor.run();
        }
    }

    public void hideInformationPanel() {
        FrameLayout infoLayout = (FrameLayout) findViewById(R.id.central_panel_container);
        infoLayout.setVisibility(View.GONE);
        Fragment fragment = getSupportFragmentManager().findFragmentByTag(InfoPanel.FRAGMENT_TAG);
        if (fragment != null) {
            FragmentTransaction transaction = getSupportFragmentManager().beginTransaction();
            transaction.remove(fragment);
            transaction.commit();
        }
        mShowingInformationPanel = false;
    }

    public void toggleInformationPanel() {
        mShowingInformationPanel = !mShowingInformationPanel;
        if (!mShowingInformationPanel) {
            hideInformationPanel();
            showDefaultImageView();
            return;
        }
        FragmentTransaction transaction = getSupportFragmentManager().beginTransaction();
        transaction.setCustomAnimations(R.anim.slide_in_right, R.anim.slide_out_left);
        FrameLayout infoLayout = (FrameLayout) findViewById(R.id.central_panel_container);
        infoLayout.setVisibility(View.VISIBLE);
        mEditorPlaceHolder.hide();
        mImageShow.setVisibility(View.GONE);

        InfoPanel panel = new InfoPanel();
        transaction.replace(R.id.central_panel_container, panel, InfoPanel.FRAGMENT_TAG);
        transaction.commit();
    }

    private void loadXML() {
        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();
            }
        });

        mImageShow = (ImageShow) findViewById(R.id.imageShow);
        mImageViews.add(mImageShow);

        setupEditors();

        mEditorPlaceHolder.hide();
        mImageShow.bindAsImageLoadListener();

        setupStatePanel();
    }

    public void fillCategories() {
        fillLooks();
        loadUserPresets();
        fillBorders();
        fillTools();
        fillEffects();
        fillVersions();
    }

    public void setupStatePanel() {
        MasterImage.getImage().setHistoryManager(mMasterImage.getHistory());
    }

    private void fillVersions() {
        mCategoryVersionsAdapter = new CategoryAdapter(this);
        mCategoryVersionsAdapter.setShowAddButton(true);
    }

    public void updateVersions() {
        mCategoryVersionsAdapter.clear();
        FilterUserPresetRepresentation originalRep = new FilterUserPresetRepresentation(
                getString(R.string.filtershow_version_original), new ImagePreset(), -1);
        mCategoryVersionsAdapter.add(
                new Action(this, originalRep, Action.FULL_VIEW));
        ImagePreset current = new ImagePreset(MasterImage.getImage().getPreset());
        FilterUserPresetRepresentation currentRep = new FilterUserPresetRepresentation(
                getString(R.string.filtershow_version_current), current, -1);
        mCategoryVersionsAdapter.add(
                new Action(this, currentRep, Action.FULL_VIEW));
        if (mVersions.size() > 0) {
            mCategoryVersionsAdapter.add(new Action(this, Action.SPACER));
        }
        for (FilterUserPresetRepresentation rep : mVersions) {
            mCategoryVersionsAdapter.add(
                    new Action(this, rep, Action.FULL_VIEW, true));
        }
        mCategoryVersionsAdapter.notifyDataSetInvalidated();
    }

    public void addCurrentVersion() {
        ImagePreset current = new ImagePreset(MasterImage.getImage().getPreset());
        mVersionsCounter++;
        FilterUserPresetRepresentation rep = new FilterUserPresetRepresentation(
                "" + mVersionsCounter, current, -1);
        mVersions.add(rep);
        updateVersions();
    }

    public void removeVersion(Action action) {
        mVersions.remove(action.getRepresentation());
        updateVersions();
    }

    public void removeLook(Action action) {
        FilterUserPresetRepresentation rep =
                (FilterUserPresetRepresentation) action.getRepresentation();
        if (rep == null) {
            return;
        }
        mUserPresetsManager.delete(rep.getId());
        updateUserPresetsFromManager();
    }

    private void fillEffects() {
        FiltersManager filtersManager = FiltersManager.getManager();
        ArrayList<FilterRepresentation> filtersRepresentations = filtersManager.getEffects();
        mCategoryFiltersAdapter = new CategoryAdapter(this);
        for (FilterRepresentation representation : filtersRepresentations) {
            if (representation.getTextId() != 0) {
                representation.setName(getString(representation.getTextId()));
            }
            mCategoryFiltersAdapter.add(new Action(this, representation));
        }
    }

    private void fillTools() {
        FiltersManager filtersManager = FiltersManager.getManager();
        ArrayList<FilterRepresentation> filtersRepresentations = filtersManager.getTools();
        mCategoryGeometryAdapter = new CategoryAdapter(this);
        for (FilterRepresentation representation : filtersRepresentations) {
            mCategoryGeometryAdapter.add(new Action(this, representation));
        }
    }

    private void processIntent() {
        Intent intent = getIntent();
        if (intent.getBooleanExtra(LAUNCH_FULLSCREEN, false)) {
            getWindow().addFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN);
        }

        mAction = intent.getAction();
        mSelectedImageUri = intent.getData();
        Uri loadUri = mSelectedImageUri;
        if (mOriginalImageUri != null) {
            loadUri = mOriginalImageUri;
        }
        if (loadUri != null) {
            startLoadBitmap(loadUri);
        } else {
            pickImage();
        }
    }

    private void setupEditors() {
        mEditorPlaceHolder.setContainer((FrameLayout) findViewById(R.id.editorContainer));
        EditorManager.addEditors(mEditorPlaceHolder);
        mEditorPlaceHolder.setOldViews(mImageViews);
    }

    private void fillEditors() {
        mEditorPlaceHolder.addEditor(new EditorChanSat());
        mEditorPlaceHolder.addEditor(new EditorGrad());
        mEditorPlaceHolder.addEditor(new EditorDraw());
        mEditorPlaceHolder.addEditor(new BasicEditor());
        mEditorPlaceHolder.addEditor(new ImageOnlyEditor());
        mEditorPlaceHolder.addEditor(new EditorTinyPlanet());
        mEditorPlaceHolder.addEditor(new EditorRedEye());
        mEditorPlaceHolder.addEditor(new EditorCrop());
        mEditorPlaceHolder.addEditor(new EditorMirror());
        mEditorPlaceHolder.addEditor(new EditorRotate());
        mEditorPlaceHolder.addEditor(new EditorStraighten());
    }

    private void setDefaultValues() {
        Resources res = getResources();

        // TODO: get those values from XML.
        FramedTextButton.setTextSize((int) getPixelsFromDip(14));
        FramedTextButton.setTrianglePadding((int) getPixelsFromDip(4));
        FramedTextButton.setTriangleSize((int) getPixelsFromDip(10));

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

    private void startLoadBitmap(Uri uri) {
        final View loading = findViewById(R.id.loading);
        final View imageShow = findViewById(R.id.imageShow);
        imageShow.setVisibility(View.INVISIBLE);
        loading.setVisibility(View.VISIBLE);
        mShowingTinyPlanet = false;
        mLoadBitmapTask = new LoadBitmapTask();
        mLoadBitmapTask.execute(uri);
    }

    private void fillBorders() {
        FiltersManager filtersManager = FiltersManager.getManager();
        ArrayList<FilterRepresentation> borders = filtersManager.getBorders();

        for (int i = 0; i < borders.size(); i++) {
            FilterRepresentation filter = borders.get(i);
            filter.setName(getString(R.string.borders));
            if (i == 0) {
                filter.setName(getString(R.string.none));
            }
        }

        mCategoryBordersAdapter = new CategoryAdapter(this);
        for (FilterRepresentation representation : borders) {
            if (representation.getTextId() != 0) {
                representation.setName(getString(representation.getTextId()));
            }
            mCategoryBordersAdapter.add(new Action(this, representation, Action.FULL_VIEW));
        }
    }

    public UserPresetsAdapter getUserPresetsAdapter() {
        return mUserPresetsAdapter;
    }

    public CategoryAdapter getCategoryLooksAdapter() {
        return mCategoryLooksAdapter;
    }

    public CategoryAdapter getCategoryBordersAdapter() {
        return mCategoryBordersAdapter;
    }

    public CategoryAdapter getCategoryGeometryAdapter() {
        return mCategoryGeometryAdapter;
    }

    public CategoryAdapter getCategoryFiltersAdapter() {
        return mCategoryFiltersAdapter;
    }

    public CategoryAdapter getCategoryVersionsAdapter() {
        return mCategoryVersionsAdapter;
    }

    public void removeFilterRepresentation(FilterRepresentation filterRepresentation) {
        if (filterRepresentation == null) {
            return;
        }
        ImagePreset oldPreset = MasterImage.getImage().getPreset();
        ImagePreset copy = new ImagePreset(oldPreset);
        copy.removeFilter(filterRepresentation);
        MasterImage.getImage().setPreset(copy, copy.getLastRepresentation(), true);
        if (MasterImage.getImage().getCurrentFilterRepresentation() == filterRepresentation) {
            FilterRepresentation lastRepresentation = copy.getLastRepresentation();
            MasterImage.getImage().setCurrentFilterRepresentation(lastRepresentation);
        }
    }

    public void useFilterRepresentation(FilterRepresentation filterRepresentation) {
        if (filterRepresentation == null) {
            return;
        }
        if (!(filterRepresentation instanceof FilterRotateRepresentation)
            && !(filterRepresentation instanceof FilterMirrorRepresentation)
            && MasterImage.getImage().getCurrentFilterRepresentation() == filterRepresentation) {
            return;
        }
        ImagePreset oldPreset = MasterImage.getImage().getPreset();
        ImagePreset copy = new ImagePreset(oldPreset);
        FilterRepresentation representation = copy.getRepresentation(filterRepresentation);
        if (representation == null) {
            filterRepresentation = filterRepresentation.copy();
            copy.addFilter(filterRepresentation);
        } else {
            if (filterRepresentation.allowsSingleInstanceOnly()) {
                // Don't just update the filter representation. Centralize the
                // logic in the addFilter(), such that we can keep "None" as
                // null.
                if (!representation.equals(filterRepresentation)) {
                    // Only do this if the filter isn't the same
                    // (state panel clicks can lead us here)
                    copy.removeFilter(representation);
                    copy.addFilter(filterRepresentation);
                }
            }
        }
        MasterImage.getImage().setPreset(copy, filterRepresentation, true);
        MasterImage.getImage().setCurrentFilterRepresentation(filterRepresentation);
    }

    public void showRepresentation(FilterRepresentation representation) {
        if (representation == null) {
            return;
        }

        if (representation instanceof FilterRotateRepresentation) {
            FilterRotateRepresentation r = (FilterRotateRepresentation) representation;
            r.rotateCW();
        }
        if (representation instanceof FilterMirrorRepresentation) {
            FilterMirrorRepresentation r = (FilterMirrorRepresentation) representation;
            r.cycle();
        }
        useFilterRepresentation(representation);

        // show representation
        Editor mCurrentEditor = mEditorPlaceHolder.showEditor(representation.getEditorId());
        loadEditorPanel(representation, mCurrentEditor);
        hideInformationPanel();
    }

    public Editor getEditor(int editorID) {
        return mEditorPlaceHolder.getEditor(editorID);
    }

    public void setCurrentPanel(int currentPanel) {
        mCurrentPanel = currentPanel;
    }

    public int getCurrentPanel() {
        return mCurrentPanel;
    }

    public void updateCategories() {
        ImagePreset preset = mMasterImage.getPreset();
        mCategoryLooksAdapter.reflectImagePreset(preset);
        mCategoryBordersAdapter.reflectImagePreset(preset);
    }

    public View getMainStatePanelContainer(int id) {
        return findViewById(id);
    }

    private class LoadHighresBitmapTask extends AsyncTask<Void, Void, Boolean> {
        @Override
        protected Boolean doInBackground(Void... params) {
            MasterImage master = MasterImage.getImage();
            Rect originalBounds = master.getOriginalBounds();
            if (master.supportsHighRes()) {
                int highresPreviewSize = master.getOriginalBitmapLarge().getWidth() * 2;
                if (highresPreviewSize > originalBounds.width()) {
                    highresPreviewSize = originalBounds.width();
                }
                Rect bounds = new Rect();
                Bitmap originalHires = ImageLoader.loadOrientedConstrainedBitmap(master.getUri(),
                        master.getActivity(), highresPreviewSize,
                        master.getOrientation(), bounds);
                master.setOriginalBounds(bounds);
                master.setOriginalBitmapHighres(originalHires);
                mBoundService.setOriginalBitmapHighres(originalHires);
                master.warnListeners();
            }
            return true;
        }

        @Override
        protected void onPostExecute(Boolean result) {
            Bitmap highresBitmap = MasterImage.getImage().getOriginalBitmapHighres();
            if (highresBitmap != null) {
                float highResPreviewScale = (float) highresBitmap.getWidth()
                        / (float) MasterImage.getImage().getOriginalBounds().width();
                mBoundService.setHighresPreviewScaleFactor(highResPreviewScale);
            }
        }
    }

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

        public LoadBitmapTask() {
            mBitmapSize = getScreenImageSize();
        }

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

        @Override
        protected void onProgressUpdate(Boolean... values) {
            super.onProgressUpdate(values);
            if (isCancelled()) {
                return;
            }
            if (values[0]) {
                mShowingTinyPlanet = true;
            }
        }

        @Override
        protected void onPostExecute(Boolean result) {
            MasterImage.setMaster(mMasterImage);
            if (isCancelled()) {
                return;
            }

            if (!result) {
                if (!mOriginalImageUri.equals(mSelectedImageUri)) {
                    mOriginalImageUri = mSelectedImageUri;
                    mOriginalPreset = null;
                    Toast.makeText(FilterShowActivity.this,
                            R.string.cannot_edit_original, Toast.LENGTH_SHORT).show();
                    startLoadBitmap(mOriginalImageUri);
                } else {
                    cannotLoadImage();
                }
                return;
            }

            if (null == CachingPipeline.getRenderScriptContext()){
                Log.v(LOGTAG,"RenderScript context destroyed during load");
                return;
            }
            final View loading = findViewById(R.id.loading);
            loading.setVisibility(View.GONE);
            final View imageShow = findViewById(R.id.imageShow);
            imageShow.setVisibility(View.VISIBLE);

            Bitmap largeBitmap = MasterImage.getImage().getOriginalBitmapLarge();
            mBoundService.setOriginalBitmap(largeBitmap);
            MasterImage.getImage().resetGeometryImages(true);

            float previewScale = (float) largeBitmap.getWidth()
                    / (float) MasterImage.getImage().getOriginalBounds().width();
            mBoundService.setPreviewScaleFactor(previewScale);
            if (!mShowingTinyPlanet) {
                mCategoryFiltersAdapter.removeTinyPlanet();
            }
            mCategoryLooksAdapter.imageLoaded();
            mCategoryBordersAdapter.imageLoaded();
            mCategoryGeometryAdapter.imageLoaded();
            mCategoryFiltersAdapter.imageLoaded();
            mLoadBitmapTask = null;

            if (mOriginalPreset != null) {
                MasterImage.getImage().setLoadedPreset(mOriginalPreset);
                MasterImage.getImage().setPreset(mOriginalPreset,
                        mOriginalPreset.getLastRepresentation(), true);
                mOriginalPreset = null;
            }

            if (mAction == TINY_PLANET_ACTION) {
                showRepresentation(mCategoryFiltersAdapter.getTinyPlanet());
            }
            LoadHighresBitmapTask highresLoad = new LoadHighresBitmapTask();
            highresLoad.execute();
            super.onPostExecute(result);
        }

    }

    private void clearGalleryBitmapPool() {
        (new AsyncTask<Void, Void, Void>() {
            @Override
            protected Void doInBackground(Void... params) {
                // Free memory held in Gallery's Bitmap pool.  May be O(n) for n bitmaps.
                GalleryBitmapPool.getInstance().clear();
                return null;
            }
        }).execute();
    }

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

    // TODO: find a more robust way of handling image size selection
    // for high screen densities.
    private int getScreenImageSize() {
        DisplayMetrics outMetrics = new DisplayMetrics();
        getWindowManager().getDefaultDisplay().getMetrics(outMetrics);
        return Math.max(outMetrics.heightPixels, outMetrics.widthPixels);
    }

    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 = SaveImage.getNewFile(this, MasterImage.getImage().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 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: {
                HistoryManager adapter = mMasterImage.getHistory();
                int position = adapter.undo();
                mMasterImage.onHistoryItemClick(position);
                backToMain();
                invalidateViews();
                UsageStatistics.onEvent(UsageStatistics.COMPONENT_EDITOR,
                        UsageStatistics.CATEGORY_BUTTON_PRESS, "Undo");
                return true;
            }
            case R.id.redoButton: {
                HistoryManager adapter = mMasterImage.getHistory();
                int position = adapter.redo();
                mMasterImage.onHistoryItemClick(position);
                invalidateViews();
                UsageStatistics.onEvent(UsageStatistics.COMPONENT_EDITOR,
                        UsageStatistics.CATEGORY_BUTTON_PRESS, "Redo");
                return true;
            }
            case R.id.resetHistoryButton: {
                resetHistory();
                UsageStatistics.onEvent(UsageStatistics.COMPONENT_EDITOR,
                        UsageStatistics.CATEGORY_BUTTON_PRESS, "ResetHistory");
                return true;
            }
            case R.id.showImageStateButton: {
                toggleImageStatePanel();
                UsageStatistics.onEvent(UsageStatistics.COMPONENT_EDITOR,
                        UsageStatistics.CATEGORY_BUTTON_PRESS,
                        mShowingImageStatePanel ? "ShowPanel" : "HidePanel");
                return true;
            }
            case R.id.exportFlattenButton: {
                showExportOptionsDialog();
                return true;
            }
            case android.R.id.home: {
                saveImage();
                return true;
            }
            case R.id.manageUserPresets: {
                manageUserPresets();
                return true;
            }
            case R.id.showInfoPanel: {
                toggleInformationPanel();
                return true;
            }
            case R.id.printButton: {
                print();
                return true;
            }
        }
        return false;
    }

    public void print() {
        Bitmap bitmap = MasterImage.getImage().getHighresImage();
        PrintJob.printBitmap(this, "ImagePrint", bitmap);
    }

    public void addNewPreset() {
        DialogFragment dialog = new PresetManagementDialog();
        dialog.show(getSupportFragmentManager(), "NoticeDialogFragment");
    }

    private void manageUserPresets() {
        DialogFragment dialog = new PresetManagementDialog();
        dialog.show(getSupportFragmentManager(), "NoticeDialogFragment");
    }

    private void showExportOptionsDialog() {
        DialogFragment dialog = new ExportDialog();
        dialog.show(getSupportFragmentManager(), "ExportDialogFragment");
    }

    public void updateUserPresetsFromAdapter(UserPresetsAdapter adapter) {
        ArrayList<FilterUserPresetRepresentation> representations =
                adapter.getDeletedRepresentations();
        for (FilterUserPresetRepresentation representation : representations) {
            deletePreset(representation.getId());
        }
        ArrayList<FilterUserPresetRepresentation> changedRepresentations =
                adapter.getChangedRepresentations();
        for (FilterUserPresetRepresentation representation : changedRepresentations) {
            updatePreset(representation);
        }
        adapter.clearDeletedRepresentations();
        adapter.clearChangedRepresentations();
        loadUserPresets();
    }

    public void loadUserPresets() {
        mUserPresetsManager.load();
        updateUserPresetsFromManager();
    }

    public void updateUserPresetsFromManager() {
        ArrayList<FilterUserPresetRepresentation> presets = mUserPresetsManager.getRepresentations();
        if (presets == null) {
            return;
        }
        if (mCategoryLooksAdapter != null) {
            fillLooks();
        }
        if (presets.size() > 0) {
            mCategoryLooksAdapter.add(new Action(this, Action.SPACER));
        }
        mUserPresetsAdapter.clear();
        for (int i = 0; i < presets.size(); i++) {
            FilterUserPresetRepresentation representation = presets.get(i);
            mCategoryLooksAdapter.add(
                    new Action(this, representation, Action.FULL_VIEW, true));
            mUserPresetsAdapter.add(new Action(this, representation, Action.FULL_VIEW));
        }
        if (presets.size() > 0) {
            mCategoryLooksAdapter.add(new Action(this, Action.ADD_ACTION));
        }
        mCategoryLooksAdapter.notifyDataSetChanged();
        mCategoryLooksAdapter.notifyDataSetInvalidated();
    }

    public void saveCurrentImagePreset(String name) {
        mUserPresetsManager.save(MasterImage.getImage().getPreset(), name);
    }

    private void deletePreset(int id) {
        mUserPresetsManager.delete(id);
    }

    private void updatePreset(FilterUserPresetRepresentation representation) {
        mUserPresetsManager.update(representation);
    }

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

    private void fillLooks() {
        FiltersManager filtersManager = FiltersManager.getManager();
        ArrayList<FilterRepresentation> filtersRepresentations = filtersManager.getLooks();

        mCategoryLooksAdapter = new CategoryAdapter(this);
        int verticalItemHeight = (int) getResources().getDimension(R.dimen.action_item_height);
        mCategoryLooksAdapter.setItemHeight(verticalItemHeight);
        for (FilterRepresentation representation : filtersRepresentations) {
            mCategoryLooksAdapter.add(new Action(this, representation, Action.FULL_VIEW));
        }
        if (mUserPresetsManager.getRepresentations() == null
            || mUserPresetsManager.getRepresentations().size() == 0) {
            mCategoryLooksAdapter.add(new Action(this, Action.ADD_ACTION));
        }

        Fragment panel = getSupportFragmentManager().findFragmentByTag(MainPanel.FRAGMENT_TAG);
        if (panel != null) {
            if (panel instanceof MainPanel) {
                MainPanel mainPanel = (MainPanel) panel;
                mainPanel.loadCategoryLookPanel(true);
            }
        }
    }

    public void setDefaultPreset() {
        // Default preset (original)
        ImagePreset preset = new ImagePreset(); // empty
        mMasterImage.setPreset(preset, preset.getLastRepresentation(), true);
    }

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

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

    public void hideImageViews() {
        for (View view : mImageViews) {
            view.setVisibility(View.GONE);
        }
        mEditorPlaceHolder.hide();
    }

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

    public void toggleImageStatePanel() {
        invalidateOptionsMenu();
        mShowingImageStatePanel = !mShowingImageStatePanel;
        Fragment panel = getSupportFragmentManager().findFragmentByTag(MainPanel.FRAGMENT_TAG);
        if (panel != null) {
            if (panel instanceof EditorPanel) {
                EditorPanel editorPanel = (EditorPanel) panel;
                editorPanel.showImageStatePanel(mShowingImageStatePanel);
            } else if (panel instanceof MainPanel) {
                MainPanel mainPanel = (MainPanel) panel;
                mainPanel.showImageStatePanel(mShowingImageStatePanel);
            }
        }
    }

    public void toggleVersionsPanel() {
        mShowingVersionsPanel = !mShowingVersionsPanel;
        Fragment panel = getSupportFragmentManager().findFragmentByTag(MainPanel.FRAGMENT_TAG);
        if (panel != null && panel instanceof MainPanel) {
            MainPanel mainPanel = (MainPanel) panel;
            mainPanel.loadCategoryVersionsPanel();
        }
    }

    @Override
    public void onConfigurationChanged(Configuration newConfig)
    {
        super.onConfigurationChanged(newConfig);
        setDefaultValues();
        loadXML();
        fillCategories();
        loadMainPanel();

        // mLoadBitmapTask==null implies you have looked at the intent
        if (!mShowingTinyPlanet && (mLoadBitmapTask == null)) {
            mCategoryFiltersAdapter.removeTinyPlanet();
        }
        final View loading = findViewById(R.id.loading);
        loading.setVisibility(View.GONE);
    }

    public void setupMasterImage() {

        HistoryManager historyManager = new HistoryManager();
        StateAdapter imageStateAdapter = new StateAdapter(this, 0);
        MasterImage.reset();
        mMasterImage = MasterImage.getImage();
        mMasterImage.setHistoryManager(historyManager);
        mMasterImage.setStateAdapter(imageStateAdapter);
        mMasterImage.setActivity(this);

        if (Runtime.getRuntime().maxMemory() > LIMIT_SUPPORTS_HIGHRES) {
            mMasterImage.setSupportsHighRes(true);
        } else {
            mMasterImage.setSupportsHighRes(false);
        }
    }

    void resetHistory() {
        HistoryManager adapter = mMasterImage.getHistory();
        adapter.reset();
        HistoryItem historyItem = adapter.getItem(0);
        ImagePreset original = new ImagePreset(historyItem.getImagePreset());
        mMasterImage.setPreset(original, historyItem.getFilterRepresentation(), true);
        invalidateViews();
        backToMain();
    }

    public void showDefaultImageView() {
        hideInformationPanel();
        mEditorPlaceHolder.hide();
        mImageShow.setVisibility(View.VISIBLE);
        MasterImage.getImage().setCurrentFilter(null);
        MasterImage.getImage().setCurrentFilterRepresentation(null);
    }

    public void backToMain() {
        Fragment currentPanel = getSupportFragmentManager().findFragmentByTag(MainPanel.FRAGMENT_TAG);
        if (currentPanel instanceof MainPanel) {
            return;
        }
        loadMainPanel();
        showDefaultImageView();
    }

    @Override
    public void onBackPressed() {
        Fragment currentPanel = getSupportFragmentManager().findFragmentByTag(MainPanel.FRAGMENT_TAG);
        if (currentPanel instanceof MainPanel) {
            if (!mImageShow.hasModifications()) {
                done();
            } else {
                AlertDialog.Builder builder = new AlertDialog.Builder(this);
                builder.setMessage(R.string.unsaved).setTitle(R.string.save_before_exit);
                builder.setPositiveButton(R.string.save_and_exit, new DialogInterface.OnClickListener() {
                    @Override
                    public void onClick(DialogInterface dialog, int id) {
                        saveImage();
                    }
                });
                builder.setNegativeButton(R.string.exit, new DialogInterface.OnClickListener() {
                    @Override
                    public void onClick(DialogInterface dialog, int id) {
                        done();
                    }
                });
                builder.show();
            }
        } else {
            backToMain();
        }
    }

    public void cannotLoadImage() {
        Toast.makeText(this, R.string.cannot_load_image, Toast.LENGTH_SHORT).show();
        finish();
    }

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

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

    @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);
            }
        }
    }


    public void saveImage() {
        if (mImageShow.hasModifications()) {
            // Get the name of the album, to which the image will be saved
            File saveDir = SaveImage.getFinalSaveDirectory(this, mSelectedImageUri);
            int bucketId = GalleryUtils.getBucketId(saveDir.getPath());
            String albumName = LocalAlbum.getLocalizedName(getResources(), bucketId, null);
            showSavingProgress(albumName);
            mImageShow.saveImage(this, null);
        } else {
            done();
        }
    }


    public void done() {
        hideSavingProgress();
        if (mLoadBitmapTask != null) {
            mLoadBitmapTask.cancel(false);
        }
        finish();
    }

    private void extractXMPData() {
        XMresults res = XmpPresets.extractXMPData(
                getBaseContext(), mMasterImage, getIntent().getData());
        if (res == null)
            return;

        mOriginalImageUri = res.originalimage;
        mOriginalPreset = res.preset;
    }

    public Uri getSelectedImageUri() {
        return mSelectedImageUri;
    }

    public void setHandlesSwipeForView(View view, float startX, float startY) {
        if (view != null) {
            mHandlingSwipeButton = true;
        } else {
            mHandlingSwipeButton = false;
        }
        mHandledSwipeView = view;
        int[] location = new int[2];
        view.getLocationInWindow(location);
        mSwipeStartX = location[0] + startX;
        mSwipeStartY = location[1] + startY;
    }

    public boolean dispatchTouchEvent (MotionEvent ev) {
        if (mHandlingSwipeButton) {
            int direction = CategoryView.HORIZONTAL;
            if (mHandledSwipeView instanceof CategoryView) {
                direction = ((CategoryView) mHandledSwipeView).getOrientation();
            }
            if (ev.getActionMasked() == MotionEvent.ACTION_MOVE) {
                float delta = ev.getY() - mSwipeStartY;
                float distance = mHandledSwipeView.getHeight();
                if (direction == CategoryView.VERTICAL) {
                    delta = ev.getX() - mSwipeStartX;
                    mHandledSwipeView.setTranslationX(delta);
                    distance = mHandledSwipeView.getWidth();
                } else {
                    mHandledSwipeView.setTranslationY(delta);
                }
                delta = Math.abs(delta);
                float transparency = Math.min(1, delta / distance);
                mHandledSwipeView.setAlpha(1.f - transparency);
                mHandledSwipeViewLastDelta = delta;
            }
            if (ev.getActionMasked() == MotionEvent.ACTION_CANCEL
                    || ev.getActionMasked() == MotionEvent.ACTION_UP) {
                mHandledSwipeView.setTranslationX(0);
                mHandledSwipeView.setTranslationY(0);
                mHandledSwipeView.setAlpha(1.f);
                mHandlingSwipeButton = false;
                float distance = mHandledSwipeView.getHeight();
                if (direction == CategoryView.VERTICAL) {
                    distance = mHandledSwipeView.getWidth();
                }
                if (mHandledSwipeViewLastDelta > distance) {
                    ((SwipableView) mHandledSwipeView).delete();
                }
            }
            return true;
        }
        return super.dispatchTouchEvent(ev);
    }
}