Image editor: refactoring

app/src/main/java/eu/faircode/email/FragmentDialogEditImage.java

@@ -0,0 +1,175 @@
+package eu.faircode.email;
+
+/*
+    This file is part of FairEmail.
+
+    FairEmail 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.
+
+    FairEmail 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 FairEmail.  If not, see <http://www.gnu.org/licenses/>.
+
+    Copyright 2018-2025 by Marcel Bokhorst (M66B)
+*/
+
+import static android.app.Activity.RESULT_OK;
+
+import android.app.Dialog;
+import android.content.Context;
+import android.graphics.Bitmap;
+import android.os.Bundle;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.widget.ImageButton;
+import android.widget.ProgressBar;
+
+import androidx.annotation.NonNull;
+import androidx.annotation.Nullable;
+import androidx.appcompat.app.AlertDialog;
+
+import com.canhub.cropper.CropImageView;
+
+import java.io.BufferedOutputStream;
+import java.io.File;
+import java.io.FileOutputStream;
+import java.io.OutputStream;
+
+public class FragmentDialogEditImage extends FragmentDialogBase {
+    @NonNull
+    @Override
+    public Dialog onCreateDialog(@Nullable Bundle savedInstanceState) {
+        Bundle args = getArguments();
+
+        Context context = getContext();
+        View dview = LayoutInflater.from(context).inflate(R.layout.dialog_edit_image, null);
+        ImageButton ibRotate = dview.findViewById(R.id.ibRotate);
+        ImageButton ibFlip = dview.findViewById(R.id.ibFlip);
+        ImageButton ibCancel = dview.findViewById(R.id.ibCancel);
+        ImageButton ibSave = dview.findViewById(R.id.ibSave);
+        CropImageView civ = dview.findViewById(R.id.civ);
+        ProgressBar pbWait = dview.findViewById(R.id.pbWait);
+
+        Dialog dialog = new AlertDialog.Builder(context)
+                .setView(dview)
+                .create();
+
+        ibRotate.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View v) {
+                civ.rotateImage(90);
+            }
+        });
+
+        ibFlip.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View v) {
+                civ.flipImageHorizontally();
+            }
+        });
+
+        ibCancel.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View v) {
+                dialog.dismiss();
+            }
+        });
+
+        ibSave.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View v) {
+                new SimpleTask<Void>() {
+                    @Override
+                    protected void onPreExecute(Bundle args) {
+                        ibSave.setEnabled(true);
+                        pbWait.setVisibility(View.VISIBLE);
+                    }
+
+                    @Override
+                    protected void onPostExecute(Bundle args) {
+                        ibSave.setEnabled(true);
+                        pbWait.setVisibility(View.GONE);
+                    }
+
+                    @Override
+                    protected Void onExecute(Context context, Bundle args) throws Throwable {
+                        long id = args.getLong("id");
+
+                        DB db = DB.getInstance(context);
+                        EntityAttachment attachment = db.attachment().getAttachment(id);
+                        if (attachment == null)
+                            return null;
+
+                        Bitmap bm = civ.getCroppedImage();
+                        if (bm == null)
+                            return null;
+
+                        File file = attachment.getFile(context);
+
+                        try (OutputStream os = new BufferedOutputStream(new FileOutputStream(file))) {
+                            bm.compress(Bitmap.CompressFormat.PNG, 90, os);
+                        }
+
+                        db.attachment().setName(id, attachment.name, "image/png", file.length());
+
+                        return null;
+                    }
+
+                    @Override
+                    protected void onExecuted(Bundle args, Void data) {
+                        sendResult(RESULT_OK);
+                        dismiss();
+                    }
+
+                    @Override
+                    protected void onException(Bundle args, Throwable ex) {
+                        Log.unexpectedError(getParentFragment(), ex);
+                    }
+                }.execute(FragmentDialogEditImage.this, args, "save:image");
+            }
+        });
+
+        new SimpleTask<EntityAttachment>() {
+            @Override
+            protected void onPreExecute(Bundle args) {
+                pbWait.setVisibility(View.VISIBLE);
+                ibSave.setEnabled(false);
+            }
+
+            @Override
+            protected void onPostExecute(Bundle args) {
+                pbWait.setVisibility(View.GONE);
+                ibSave.setEnabled(true);
+            }
+
+            @Override
+            protected EntityAttachment onExecute(Context context, Bundle args) {
+                long id = args.getLong("id");
+
+                DB db = DB.getInstance(context);
+                return db.attachment().getAttachment(id);
+            }
+
+            @Override
+            protected void onExecuted(Bundle args, EntityAttachment attachment) {
+                if (attachment == null)
+                    return;
+
+                civ.setImageUriAsync(attachment.getUri(context));
+            }
+
+            @Override
+            protected void onException(Bundle args, Throwable ex) {
+                Log.unexpectedError(getParentFragmentManager(), ex);
+            }
+        }.execute(this, args, "edit:image");
+
+        return dialog;
+    }
+}