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/*
* Copyright (C) 2010 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.photoeditor;
import android.app.Activity;
import android.content.Intent;
import android.graphics.Bitmap;
import android.net.Uri;
import android.os.Bundle;
import com.android.gallery3d.R;
/**
* Main activity of the photo editor that opens a photo and prepares tools for photo editing.
*/
public class PhotoEditor extends Activity {
private static final String SAVE_URI_KEY = "save_uri";
private Uri sourceUri;
private Uri saveUri;
private FilterStack filterStack;
private ActionBar actionBar;
private EffectsBar effectsBar;
private Toolbar toolbar;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.photoeditor_main);
Intent intent = getIntent();
if (Intent.ACTION_EDIT.equalsIgnoreCase(intent.getAction())) {
sourceUri = intent.getData();
}
toolbar = (Toolbar) findViewById(R.id.toolbar);
actionBar = (ActionBar) findViewById(R.id.action_bar);
filterStack = new FilterStack((PhotoView) findViewById(R.id.photo_view),
new FilterStack.StackListener() {
@Override
public void onStackChanged(boolean canUndo, boolean canRedo) {
actionBar.updateButtons(canUndo, canRedo);
}
}, savedInstanceState);
if (savedInstanceState != null) {
saveUri = savedInstanceState.getParcelable(SAVE_URI_KEY);
actionBar.updateSave(saveUri == null);
}
// Effects-bar is initially disabled until photo is successfully loaded.
effectsBar = (EffectsBar) findViewById(R.id.effects_bar);
effectsBar.initialize(filterStack);
effectsBar.setEnabled(false);
actionBar.setClickRunnable(R.id.undo_button, createUndoRedoRunnable(true));
actionBar.setClickRunnable(R.id.redo_button, createUndoRedoRunnable(false));
actionBar.setClickRunnable(R.id.save_button, createSaveRunnable());
actionBar.setClickRunnable(R.id.share_button, createShareRunnable());
actionBar.setClickRunnable(R.id.action_bar_back, createBackRunnable());
}
private void openPhoto() {
toolbar.showSpinner();
LoadScreennailTask.Callback callback = new LoadScreennailTask.Callback() {
@Override
public void onComplete(final Bitmap result) {
filterStack.setPhotoSource(result, new OnDoneCallback() {
@Override
public void onDone() {
toolbar.dismissSpinner();
effectsBar.setEnabled(result != null);
}
});
}
};
new LoadScreennailTask(this, callback).execute(sourceUri);
}
private Runnable createUndoRedoRunnable(final boolean undo) {
return new Runnable() {
@Override
public void run() {
effectsBar.exit(new Runnable() {
@Override
public void run() {
toolbar.showSpinner();
OnDoneCallback callback = new OnDoneCallback() {
@Override
public void onDone() {
toolbar.dismissSpinner();
}
};
if (undo) {
filterStack.undo(callback);
} else {
filterStack.redo(callback);
}
}
});
}
};
}
private Runnable createSaveRunnable() {
return new Runnable() {
@Override
public void run() {
effectsBar.exit(new Runnable() {
@Override
public void run() {
toolbar.showSpinner();
filterStack.getOutputBitmap(new OnDoneBitmapCallback() {
@Override
public void onDone(Bitmap bitmap) {
SaveCopyTask.Callback callback = new SaveCopyTask.Callback() {
@Override
public void onComplete(Uri result) {
toolbar.dismissSpinner();
saveUri = result;
actionBar.updateSave(saveUri == null);
}
};
new SaveCopyTask(PhotoEditor.this, sourceUri, callback).execute(
bitmap);
}
});
}
});
}
};
}
private Runnable createShareRunnable() {
return new Runnable() {
@Override
public void run() {
effectsBar.exit(new Runnable() {
@Override
public void run() {
if (saveUri != null) {
Intent intent = new Intent(Intent.ACTION_SEND);
intent.putExtra(Intent.EXTRA_STREAM, saveUri);
intent.setType("image/*");
startActivity(intent);
}
}
});
}
};
}
private Runnable createBackRunnable() {
return new Runnable() {
@Override
public void run() {
// Exit effects or go back to the previous activity on pressing back button.
if (!effectsBar.exit(null)) {
// Pop-up a dialog if there are unsaved changes.
if (actionBar.canSave()) {
new YesCancelDialogBuilder(PhotoEditor.this, new Runnable() {
@Override
public void run() {
// Discard unsaved photo for the result.
finish();
}
}, R.string.discard_unsaved_photo).show();
} else {
setResult(RESULT_OK, new Intent().setData(saveUri));
finish();
}
}
}
};
}
@Override
protected void onSaveInstanceState(Bundle outState) {
super.onSaveInstanceState(outState);
filterStack.saveStacks(outState);
outState.putParcelable(SAVE_URI_KEY, saveUri);
}
@Override
public void onBackPressed() {
actionBar.clickBack();
}
@Override
protected void onPause() {
super.onPause();
filterStack.onPause();
// Dismiss any running progress dialog as all operations are paused.
toolbar.dismissSpinner();
}
@Override
protected void onResume() {
super.onResume();
filterStack.onResume();
openPhoto();
}
}
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