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import android.Manifest;
import android.app.AlertDialog;
import android.content.DialogInterface;
import android.content.pm.PackageManager;
import android.os.Bundle;
import android.util.DisplayMetrics;
import android.view.Menu;
import android.view.MenuInflater;
import android.view.MenuItem;
import android.view.View;
import android.widget.Button;
import android.widget.SeekBar;
import android.widget.TextView;
import android.widget.Toast;
import androidx.annotation.NonNull;
import androidx.appcompat.app.AppCompatActivity;
import androidx.core.app.ActivityCompat;
import androidx.core.content.ContextCompat;
import yuku.ambilwarna.AmbilWarnaDialog;
public class MainActivity extends AppCompatActivity {
private PaintView paintView;
private int defaultColor;
private int STORAGE_PERMISSION_CODE = 1;
@Override
protected void onCreate(Bundle savedInstanceState) {
Button button;
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
paintView = findViewById(R.id.paintView);
button = findViewById(R.id.change_color_button);
DisplayMetrics displayMetrics = new DisplayMetrics();
SeekBar seekBar = findViewById(R.id.seekBar);
final TextView textView = findViewById(R.id.current_pen_size);
getWindowManager().getDefaultDisplay().getMetrics(displayMetrics);
paintView.initialise(displayMetrics);
textView.setText("Pen size: " + seekBar.getProgress());
button.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
openColourPicker();
}
});
seekBar.setOnSeekBarChangeListener(new SeekBar.OnSeekBarChangeListener() {
@Override
public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) {
paintView.setStrokeWidth(seekBar.getProgress());
textView.setText("Pen size: " + seekBar.getProgress());
}
@Override
public void onStartTrackingTouch(SeekBar seekBar) {
}
@Override
public void onStopTrackingTouch(SeekBar seekBar) {
}
});
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
MenuInflater menuInflater = getMenuInflater();
menuInflater.inflate(R.menu.main, menu);
return super.onCreateOptionsMenu(menu);
}
private void requestStoragePermission () {
if (ActivityCompat.shouldShowRequestPermissionRationale(this, Manifest.permission.WRITE_EXTERNAL_STORAGE)) {
new AlertDialog.Builder(this)
.setTitle("Permission needed")
.setMessage("Needed to save image")
.setPositiveButton("OK", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
ActivityCompat.requestPermissions(MainActivity.this, new String[] {Manifest.permission.WRITE_EXTERNAL_STORAGE}, STORAGE_PERMISSION_CODE);
}
})
.setNegativeButton("Cancel", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
dialog.dismiss();
}
})
.create().show();
} else {
ActivityCompat.requestPermissions(this, new String[] {Manifest.permission.WRITE_EXTERNAL_STORAGE}, STORAGE_PERMISSION_CODE);
}
}
@Override
public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
if (requestCode == STORAGE_PERMISSION_CODE) {
if (grantResults.length > 0 && grantResults[0] == PackageManager.PERMISSION_GRANTED) {
Toast.makeText(this, "Access granted", Toast.LENGTH_LONG).show();
} else {
Toast.makeText(this, "Access denied", Toast.LENGTH_LONG).show();
}
}
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
switch (item.getItemId()) {
case R.id.clear_button:
paintView.clear();
return true;
case R.id.undo_button:
paintView.undo();
return true;
case R.id.redo_button:
paintView.redo();
return true;
case R.id.save_button:
if (ContextCompat.checkSelfPermission(MainActivity.this, Manifest.permission.WRITE_EXTERNAL_STORAGE) != PackageManager.PERMISSION_GRANTED) {
requestStoragePermission();
}
paintView.saveImage();
return true;
}
return super.onOptionsItemSelected(item);
}
private void openColourPicker () {
AmbilWarnaDialog ambilWarnaDialog = new AmbilWarnaDialog(this, defaultColor, new AmbilWarnaDialog.OnAmbilWarnaListener() {
@Override
public void onCancel(AmbilWarnaDialog dialog) {
Toast.makeText(MainActivity.this, "Unavailable", Toast.LENGTH_LONG).show();
}
@Override
public void onOk(AmbilWarnaDialog dialog, int color) {
defaultColor = color;
paintView.setColor(color);
}
});
ambilWarnaDialog.show(); // add
}
}
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