fedilab-Android-App/app/src/main/java/app/fedilab/android/activities/PhotoEditorActivity.java

package app.fedilab.android.activities;
/* Copyright 2017 Thomas Schneider
 *
 * This file is a part of Fedilab
 *
 * This program is free software; you can redistribute it and/or modify it under the terms of the
 * GNU General Public License as published by the Free Software Foundation; either version 3 of the
 * License, or (at your option) any later version.
 *
 * Fedilab is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even
 * the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
 * Public License for more details.
 *
 * You should have received a copy of the GNU General Public License along with Fedilab; if not,
 * see <http://www.gnu.org/licenses>. */

import android.Manifest;
import android.annotation.SuppressLint;
import android.content.Intent;
import android.content.SharedPreferences;
import android.content.pm.PackageManager;
import android.graphics.Bitmap;
import android.graphics.Typeface;
import android.net.Uri;
import android.os.Bundle;
import android.provider.MediaStore;
import android.view.View;
import android.view.animation.AnticipateOvershootInterpolator;
import android.widget.Button;
import android.widget.ImageView;
import android.widget.TextView;

import androidx.annotation.NonNull;
import androidx.appcompat.app.AlertDialog;
import androidx.constraintlayout.widget.ConstraintLayout;
import androidx.constraintlayout.widget.ConstraintSet;
import androidx.core.app.ActivityCompat;
import androidx.core.content.ContextCompat;
import androidx.exifinterface.media.ExifInterface;
import androidx.localbroadcastmanager.content.LocalBroadcastManager;
import androidx.recyclerview.widget.LinearLayoutManager;
import androidx.recyclerview.widget.RecyclerView;
import androidx.transition.ChangeBounds;
import androidx.transition.TransitionManager;

import com.theartofdev.edmodo.cropper.CropImage;

import java.io.File;
import java.io.IOException;
import java.io.InputStream;

import app.fedilab.android.R;
import app.fedilab.android.helper.Helper;
import app.fedilab.android.imageeditor.EmojiBSFragment;
import app.fedilab.android.imageeditor.PropertiesBSFragment;
import app.fedilab.android.imageeditor.StickerBSFragment;
import app.fedilab.android.imageeditor.TextEditorDialogFragment;
import app.fedilab.android.imageeditor.filters.FilterListener;
import app.fedilab.android.imageeditor.filters.FilterViewAdapter;
import app.fedilab.android.imageeditor.tools.EditingToolsAdapter;
import app.fedilab.android.imageeditor.tools.ToolType;
import es.dmoral.toasty.Toasty;
import ja.burhanrashid52.photoeditor.OnPhotoEditorListener;
import ja.burhanrashid52.photoeditor.PhotoEditor;
import ja.burhanrashid52.photoeditor.PhotoEditorView;
import ja.burhanrashid52.photoeditor.PhotoFilter;
import ja.burhanrashid52.photoeditor.SaveSettings;
import ja.burhanrashid52.photoeditor.ViewType;


public class PhotoEditorActivity extends BaseActivity implements OnPhotoEditorListener,
        View.OnClickListener,
        PropertiesBSFragment.Properties,
        EmojiBSFragment.EmojiListener,
        StickerBSFragment.StickerListener, EditingToolsAdapter.OnItemSelected, FilterListener {


    private static final int CAMERA_REQUEST = 52;
    private static final int PICK_REQUEST = 53;
    private final int STORE_REQUEST = 54;
    private PhotoEditor mPhotoEditor;
    private PhotoEditorView mPhotoEditorView;
    private PropertiesBSFragment mPropertiesBSFragment;
    private EmojiBSFragment mEmojiBSFragment;
    private StickerBSFragment mStickerBSFragment;
    private TextView mTxtCurrentTool;
    private RecyclerView mRvTools, mRvFilters;
    private EditingToolsAdapter mEditingToolsAdapter = new EditingToolsAdapter(this);
    private FilterViewAdapter mFilterViewAdapter = new FilterViewAdapter(this);
    private ConstraintLayout mRootView;
    private ConstraintSet mConstraintSet = new ConstraintSet();
    private boolean mIsFilterVisible;
    private Uri uri;
    private boolean exit;

    private static int exifToDegrees(int exifOrientation) {
        if (exifOrientation == ExifInterface.ORIENTATION_ROTATE_90) {
            return 90;
        } else if (exifOrientation == ExifInterface.ORIENTATION_ROTATE_180) {
            return 180;
        } else if (exifOrientation == ExifInterface.ORIENTATION_ROTATE_270) {
            return 270;
        }
        return 0;
    }

    @SuppressLint("MissingPermission")
    @Override
    protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);
        SharedPreferences sharedpreferences = getSharedPreferences(Helper.APP_PREFS, MODE_PRIVATE);
        int theme = sharedpreferences.getInt(Helper.SET_THEME, Helper.THEME_DARK);
        switch (theme) {
            case Helper.THEME_LIGHT:
                setTheme(R.style.AppTheme_Fedilab);
                break;
            case Helper.THEME_BLACK:
                setTheme(R.style.AppThemeBlack);
                break;
            default:
                setTheme(R.style.AppThemeDark);
        }

        Bundle b = getIntent().getExtras();
        if (getSupportActionBar() != null)
            getSupportActionBar().hide();
        String path = null;
        if (b != null)
            path = b.getString("imageUri", null);
        if (path == null) {
            finish();
        }
        uri = Uri.parse(path);


        exit = false;

        setContentView(R.layout.activity_photoeditor);

        initViews();


        mPropertiesBSFragment = new PropertiesBSFragment();
        mEmojiBSFragment = new EmojiBSFragment();
        mStickerBSFragment = new StickerBSFragment();
        mStickerBSFragment.setStickerListener(this);
        mEmojiBSFragment.setEmojiListener(this);
        mPropertiesBSFragment.setPropertiesChangeListener(this);

        LinearLayoutManager llmTools = new LinearLayoutManager(this, LinearLayoutManager.HORIZONTAL, false);
        mRvTools.setLayoutManager(llmTools);
        mRvTools.setAdapter(mEditingToolsAdapter);

        LinearLayoutManager llmFilters = new LinearLayoutManager(this, LinearLayoutManager.HORIZONTAL, false);
        mRvFilters.setLayoutManager(llmFilters);
        mRvFilters.setAdapter(mFilterViewAdapter);


        Typeface mEmojiTypeFace = Typeface.createFromAsset(getAssets(), "emojione-android.ttf");

        mPhotoEditor = new PhotoEditor.Builder(this, mPhotoEditorView)
                .setPinchTextScalable(true) // set flag to make text scalable when pinch
                .setDefaultEmojiTypeface(mEmojiTypeFace)
                .build(); // build photo editor sdk


        mPhotoEditor.setOnPhotoEditorListener(this);

        //Set Image Dynamically
        try {
            mPhotoEditorView.getSource().setImageURI(uri);
        } catch (Exception e) {
            Toasty.error(PhotoEditorActivity.this, getString(R.string.error)).show();
        }

        if (uri != null) {
            try (InputStream inputStream = getContentResolver().openInputStream(uri)) {
                assert inputStream != null;
                ExifInterface exif = new ExifInterface(inputStream);
                int rotation = exif.getAttributeInt(ExifInterface.TAG_ORIENTATION, ExifInterface.ORIENTATION_NORMAL);
                int rotationInDegrees = exifToDegrees(rotation);
                mPhotoEditorView.getSource().setRotation(rotationInDegrees);
            } catch (Exception e) {
                e.printStackTrace();
            }
        }

        Button send = findViewById(R.id.send);

        send.setOnClickListener(v -> {
            exit = true;
            saveImage();
        });
    }

    private void initViews() {
        ImageView imgUndo;
        ImageView imgRedo;
        ImageView imgCamera;
        ImageView imgGallery;
        ImageView imgSave;
        ImageView imgClose;

        mPhotoEditorView = findViewById(R.id.photoEditorView);
        mTxtCurrentTool = findViewById(R.id.txtCurrentTool);
        mRvTools = findViewById(R.id.rvConstraintTools);
        mRvFilters = findViewById(R.id.rvFilterView);
        mRootView = findViewById(R.id.rootView);

        imgUndo = findViewById(R.id.imgUndo);
        imgUndo.setOnClickListener(this);

        imgRedo = findViewById(R.id.imgRedo);
        imgRedo.setOnClickListener(this);

        imgCamera = findViewById(R.id.imgCamera);
        imgCamera.setOnClickListener(this);

        imgGallery = findViewById(R.id.imgGallery);
        imgGallery.setOnClickListener(this);

        imgSave = findViewById(R.id.imgSave);
        imgSave.setOnClickListener(this);

        imgClose = findViewById(R.id.imgClose);
        imgClose.setOnClickListener(this);

    }

    @Override
    public void onEditTextChangeListener(final View rootView, String text, int colorCode) {
        TextEditorDialogFragment textEditorDialogFragment =
                TextEditorDialogFragment.show(this, text, colorCode);
        textEditorDialogFragment.setOnTextEditorListener((inputText, colorCode1) -> {
            mPhotoEditor.editText(rootView, inputText, colorCode1);
            mTxtCurrentTool.setText(R.string.label_text);
        });
    }

    @Override
    public void onAddViewListener(ViewType viewType, int numberOfAddedViews) {
    }


    @Override
    public void onRemoveViewListener(ViewType viewType, int numberOfAddedViews) {
    }

    @Override
    public void onStartViewChangeListener(ViewType viewType) {
    }

    @Override
    public void onStopViewChangeListener(ViewType viewType) {
    }

    @Override
    public void onClick(View view) {
        switch (view.getId()) {

            case R.id.imgUndo:
                mPhotoEditor.undo();
                break;

            case R.id.imgRedo:
                mPhotoEditor.redo();
                break;

            case R.id.imgSave:
                saveImage();
                break;

            case R.id.imgClose:
                onBackPressed();
                break;

            case R.id.imgCamera:
                Intent cameraIntent = new Intent(android.provider.MediaStore.ACTION_IMAGE_CAPTURE);
                startActivityForResult(cameraIntent, CAMERA_REQUEST);
                break;

            case R.id.imgGallery:
                Intent intent = new Intent();
                intent.setType("image/*");
                intent.setAction(Intent.ACTION_GET_CONTENT);
                startActivityForResult(Intent.createChooser(intent, getString(R.string.toot_select_image)), PICK_REQUEST);
                break;
        }
    }


    private void saveImage() {
        if (requestPermission(Manifest.permission.WRITE_EXTERNAL_STORAGE)) {
            showLoading(getString(R.string.saving));
            SharedPreferences sharedpreferences = getSharedPreferences(Helper.APP_PREFS, MODE_PRIVATE);
            String myDir = sharedpreferences.getString(Helper.SET_FOLDER_RECORD, getCacheDir().getAbsolutePath());
            String filename = System.currentTimeMillis() + "_" + Helper.getFileName(PhotoEditorActivity.this, uri);

            File file = new File(myDir + "/" + filename);
            try {
                //noinspection ResultOfMethodCallIgnored
                file.createNewFile();

                SaveSettings saveSettings = new SaveSettings.Builder()
                        .setClearViewsEnabled(true)
                        .setTransparencyEnabled(true)
                        .build();
                if (ContextCompat.checkSelfPermission(PhotoEditorActivity.this, Manifest.permission.READ_EXTERNAL_STORAGE) !=
                        PackageManager.PERMISSION_GRANTED) {
                    ActivityCompat.requestPermissions(PhotoEditorActivity.this,
                            new String[]{Manifest.permission.READ_EXTERNAL_STORAGE},
                            STORE_REQUEST);
                    return;
                }
                mPhotoEditor.saveAsFile(file.getAbsolutePath(), saveSettings, new PhotoEditor.OnSaveListener() {
                    @Override
                    public void onSuccess(@NonNull String imagePath) {
                        hideLoading();
                        showSnackbar(getString(R.string.image_saved));
                        mPhotoEditorView.getSource().setImageURI(Uri.fromFile(new File(imagePath)));
                        if (exit) {
                            Intent intentImage = new Intent(Helper.INTENT_SEND_MODIFIED_IMAGE);
                            intentImage.putExtra("imgpath", imagePath);
                            LocalBroadcastManager.getInstance(PhotoEditorActivity.this).sendBroadcast(intentImage);
                            finish();
                        }
                    }

                    @Override
                    public void onFailure(@NonNull Exception exception) {
                        hideLoading();
                        showSnackbar(getString(R.string.save_image_failed));
                    }
                });
            } catch (IOException e) {
                e.printStackTrace();
                hideLoading();
                if (e.getMessage() != null) {
                    showSnackbar(e.getMessage());
                }
            }
        }
    }

    @Override
    public void onRequestPermissionsResult(int requestCode,
                                           @NonNull String[] permissions, @NonNull int[] grantResults) {
        if (requestCode == STORE_REQUEST) {// If request is cancelled, the result arrays are empty.
            if (grantResults.length > 0
                    && grantResults[0] == PackageManager.PERMISSION_GRANTED) {
                // We have the permission.
                saveImage();
            }
        }
    }

    @Override
    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
        super.onActivityResult(requestCode, resultCode, data);
        if (resultCode == RESULT_OK) {
            ExifInterface exif;
            int rotation;
            int rotationInDegrees = 0;
            if (data != null && data.getData() != null) {
                try (InputStream inputStream = getContentResolver().openInputStream(data.getData())) {
                    assert inputStream != null;
                    exif = new androidx.exifinterface.media.ExifInterface(inputStream);
                    rotation = exif.getAttributeInt(ExifInterface.TAG_ORIENTATION, ExifInterface.ORIENTATION_NORMAL);
                    rotationInDegrees = exifToDegrees(rotation);
                } catch (Exception e) {
                    e.printStackTrace();
                }
            }

            switch (requestCode) {
                case CAMERA_REQUEST:
                    if (data != null && data.getExtras() != null) {
                        mPhotoEditor.clearAllViews();
                        Bitmap photo = (Bitmap) data.getExtras().get("data");
                        mPhotoEditorView.getSource().setImageBitmap(photo);
                        mPhotoEditorView.getSource().setRotation(rotationInDegrees);
                    }
                    break;
                case PICK_REQUEST:
                    if (data != null && data.getData() != null) {
                        try {
                            mPhotoEditor.clearAllViews();
                            Uri uri = data.getData();
                            Bitmap bitmap = MediaStore.Images.Media.getBitmap(getContentResolver(), uri);
                            mPhotoEditorView.getSource().setImageBitmap(bitmap);
                            mPhotoEditorView.getSource().setRotation(rotationInDegrees);
                        } catch (IOException e) {
                            e.printStackTrace();
                        }
                    }
                    break;
                case CropImage.CROP_IMAGE_ACTIVITY_REQUEST_CODE:

                    CropImage.ActivityResult result = CropImage.getActivityResult(data);
                    if (result != null) {
                        Uri resultUri = result.getUri();
                        if (resultUri != null) {
                            mPhotoEditorView.getSource().setImageURI(resultUri);
                            mPhotoEditorView.getSource().setRotation(rotationInDegrees);
                            if (uri != null && uri.getPath() != null) {
                                File fdelete = new File(uri.getPath());
                                if (fdelete.exists()) {
                                    //noinspection ResultOfMethodCallIgnored
                                    fdelete.delete();
                                }
                            }
                            uri = resultUri;
                        }
                    }
                    break;
            }
        }

    }

    @Override
    public void onColorChanged(int colorCode) {
        mPhotoEditor.setBrushColor(colorCode);
        mTxtCurrentTool.setText(R.string.label_brush);
    }

    @Override
    public void onOpacityChanged(int opacity) {
        mPhotoEditor.setOpacity(opacity);
        mTxtCurrentTool.setText(R.string.label_brush);
    }

    @Override
    public void onBrushSizeChanged(int brushSize) {
        mPhotoEditor.setBrushSize(brushSize);
        mTxtCurrentTool.setText(R.string.label_brush);
    }

    @Override
    public void onEmojiClick(String emojiUnicode) {
        mPhotoEditor.addEmoji(emojiUnicode);
        mTxtCurrentTool.setText(R.string.label_emoji);

    }

    @Override
    public void onStickerClick(Bitmap bitmap) {
        mPhotoEditor.addImage(bitmap);
        mTxtCurrentTool.setText(R.string.label_sticker);
    }

    @Override
    public void isPermissionGranted(boolean isGranted, String permission) {
        if (isGranted) {
            saveImage();
        }
    }

    private void showSaveDialog() {
        int style;
        SharedPreferences sharedpreferences = getSharedPreferences(Helper.APP_PREFS, MODE_PRIVATE);
        int theme = sharedpreferences.getInt(Helper.SET_THEME, Helper.THEME_DARK);
        if (theme == Helper.THEME_DARK) {
            style = R.style.DialogDark;
        } else if (theme == Helper.THEME_BLACK) {
            style = R.style.DialogBlack;
        } else {
            style = R.style.Dialog;
        }
        AlertDialog.Builder builder = new AlertDialog.Builder(this, style);
        builder.setMessage(getString(R.string.confirm_exit_editing));
        builder.setPositiveButton(R.string.save, (dialog, which) -> saveImage());
        builder.setNegativeButton(R.string.cancel, (dialog, which) -> dialog.dismiss());

        builder.setNegativeButton(R.string.discard, (dialog, which) -> finish());
        builder.create().show();

    }

    @Override
    public void onFilterSelected(PhotoFilter photoFilter) {
        mPhotoEditor.setFilterEffect(photoFilter);
    }

    @Override
    public void onToolSelected(ToolType toolType) {
        switch (toolType) {
            case BRUSH:
                mPhotoEditor.setBrushDrawingMode(true);
                mTxtCurrentTool.setText(R.string.label_brush);
                mPropertiesBSFragment.show(getSupportFragmentManager(), mPropertiesBSFragment.getTag());
                break;
            case TEXT:
                TextEditorDialogFragment textEditorDialogFragment = TextEditorDialogFragment.show(this);
                textEditorDialogFragment.setOnTextEditorListener((inputText, colorCode) -> {
                    mPhotoEditor.addText(inputText, colorCode);
                    mTxtCurrentTool.setText(R.string.label_text);
                });
                break;
            case ERASER:
                mPhotoEditor.brushEraser();
                mTxtCurrentTool.setText(R.string.label_eraser);
                break;
            case FILTER:
                mTxtCurrentTool.setText(R.string.label_filter);
                showFilter(true);
                break;
            case EMOJI:
                mEmojiBSFragment.show(getSupportFragmentManager(), mEmojiBSFragment.getTag());
                break;
            case STICKER:
                mStickerBSFragment.show(getSupportFragmentManager(), mStickerBSFragment.getTag());
                break;
            case CROP:
                CropImage.activity(uri)
                        .start(this);
                break;
        }
    }


    void showFilter(boolean isVisible) {
        mIsFilterVisible = isVisible;
        mConstraintSet.clone(mRootView);

        if (isVisible) {
            mConstraintSet.clear(mRvFilters.getId(), ConstraintSet.START);
            mConstraintSet.connect(mRvFilters.getId(), ConstraintSet.START,
                    ConstraintSet.PARENT_ID, ConstraintSet.START);
            mConstraintSet.connect(mRvFilters.getId(), ConstraintSet.END,
                    ConstraintSet.PARENT_ID, ConstraintSet.END);
        } else {
            mConstraintSet.connect(mRvFilters.getId(), ConstraintSet.START,
                    ConstraintSet.PARENT_ID, ConstraintSet.END);
            mConstraintSet.clear(mRvFilters.getId(), ConstraintSet.END);
        }

        ChangeBounds changeBounds = new ChangeBounds();
        changeBounds.setDuration(350);
        changeBounds.setInterpolator(new AnticipateOvershootInterpolator(1.0f));
        TransitionManager.beginDelayedTransition(mRootView, changeBounds);

        mConstraintSet.applyTo(mRootView);
    }

    @Override
    public void onBackPressed() {
        if (mIsFilterVisible) {
            showFilter(false);
            mTxtCurrentTool.setText(R.string.app_name);
        } else if (!mPhotoEditor.isCacheEmpty()) {
            showSaveDialog();
        } else {
            super.onBackPressed();
        }
    }
}