package com.watermarkcreator;
import android.Manifest;
import android.app.Activity;
import android.content.Context;
import android.content.Intent;
import android.content.pm.PackageManager;
import android.content.res.Resources;
import android.graphics.Bitmap;
import android.graphics.Color;
import android.net.Uri;
import android.os.Bundle;
import android.support.annotation.NonNull;
import android.support.v4.app.ActivityCompat;
import android.support.v4.content.ContextCompat;
import android.support.v7.app.AppCompatActivity;
import android.util.DisplayMetrics;
import android.view.View;
import android.widget.EditText;
import android.widget.ImageView;
import android.widget.SeekBar;
import android.widget.TextView;
import android.widget.Toast;
import com.watermarkcreator.library.BitmapDecoderTask;
import com.watermarkcreator.library.OverlayCreatorTask;
import com.watermarkcreator.library.WaterMarkCreator;
/**
* Created by b_ashish on 29-Jun-16.
*/
public class MainActivity extends AppCompatActivity {
private static final int CHOOSE_BASE_PHOTO = 1001;
private static final int MY_PERMISSIONS_REQUEST_READ_EXTERNAL_STORAGE = 99;
private Bitmap mSourceBitmap, mWatermarkBitmap;
private ImageView baseImageView;
private int mFromTop = 0, mFromLeft = 0;
private int mAlpha = 255;
private float mScale = 0.5f;
private OverlayCreatorTask mOverlayBitmapTask;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
final EditText waterMark = (EditText) findViewById(R.id.watermarkText);
baseImageView = (ImageView) findViewById(R.id.image_holder);
findViewById(R.id.convert_text_to_bmp).setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
String waterMarkText = waterMark.getText().toString();
if (waterMarkText != null && !waterMarkText.equals("")) {
placeTextOnImage(waterMarkText);
} else {
Toast.makeText(MainActivity.this, R.string.no_text_to_convert, Toast.LENGTH_LONG).show();
}
}
});
View.OnClickListener listener = new View.OnClickListener() {
@Override
public void onClick(View v) {
switch (v.getId()) {
case R.id.baseImageButton:
if (ContextCompat.checkSelfPermission(MainActivity.this,
Manifest.permission.READ_EXTERNAL_STORAGE)
!= PackageManager.PERMISSION_GRANTED) {
if (ActivityCompat.shouldShowRequestPermissionRationale(MainActivity.this, Manifest.permission.READ_EXTERNAL_STORAGE)) {
// Show an explanation to the user *asynchronously* -- don't block
// this thread waiting for the user's response! After the user
// sees the explanation, try again to request the permission.
Toast.makeText(MainActivity.this, "shouldShowRequestPermissionRationale()", Toast.LENGTH_SHORT).show();
pickImageFromGallery();
} else {
ActivityCompat.requestPermissions(MainActivity.this,
new String[]{Manifest.permission.READ_EXTERNAL_STORAGE},
MY_PERMISSIONS_REQUEST_READ_EXTERNAL_STORAGE);
}
} else {
pickImageFromGallery();
}
break;
}
}
};
findViewById(R.id.baseImageButton).setOnClickListener(listener);
int maxWidth = getDimens(R.id.image_holder)[0];
int maxHeight = getDimens(R.id.image_holder)[1];
SeekBar leftSeek = (SeekBar) findViewById(R.id.left_seek);
leftSeek.setMax(maxWidth);
leftSeek.setProgress(mFromLeft);
SeekBar fromTopSeek = (SeekBar) findViewById(R.id.top_seek);
fromTopSeek.setMax(maxHeight);
fromTopSeek.setProgress(mFromTop);
SeekBar scaleSeekBar = (SeekBar) findViewById(R.id.scale_size);
scaleSeekBar.setProgress((int) (mScale * 100));
SeekBar opacitySeekBar = (SeekBar) findViewById(R.id.opacity_seek);
opacitySeekBar.setProgress(mAlpha);
((TextView) findViewById(R.id.left_label)).setText(getString(R.string.from_left, mFromLeft));
((TextView) findViewById(R.id.top_label)).setText(getString(R.string.from_top, mFromTop));
((TextView) findViewById(R.id.scale_label)).setText(getString(R.string.scale_factor, mScale));
((TextView) findViewById(R.id.opacity_label)).setText(getString(R.string.opacity_factor, mAlpha));
leftSeek.setOnSeekBarChangeListener(new SeekBar.OnSeekBarChangeListener() {
@Override
public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) {
mFromLeft = progress;
((TextView) findViewById(R.id.left_label)).setText(getString(R.string.from_left, mFromLeft));
invalidateOverlay();
}
@Override
public void onStartTrackingTouch(SeekBar seekBar) {
}
@Override
public void onStopTrackingTouch(SeekBar seekBar) {
}
});
fromTopSeek.setOnSeekBarChangeListener(new SeekBar.OnSeekBarChangeListener() {
@Override
public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) {
mFromTop = progress;
((TextView) findViewById(R.id.top_label)).setText(getString(R.string.from_top, mFromTop));
invalidateOverlay();
}
@Override
public void onStartTrackingTouch(SeekBar seekBar) {
}
@Override
public void onStopTrackingTouch(SeekBar seekBar) {
}
});
scaleSeekBar.setOnSeekBarChangeListener(new SeekBar.OnSeekBarChangeListener() {
@Override
public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) {
mScale = progress / 100f;
((TextView) findViewById(R.id.scale_label)).setText(getString(R.string.scale_factor, mScale));
invalidateOverlay();
}
@Override
public void onStartTrackingTouch(SeekBar seekBar) {
}
@Override
public void onStopTrackingTouch(SeekBar seekBar) {
}
});
opacitySeekBar.setOnSeekBarChangeListener(new SeekBar.OnSeekBarChangeListener() {
@Override
public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) {
mAlpha = progress;
((TextView) findViewById(R.id.opacity_label)).setText(getString(R.string.opacity_factor, mAlpha));
invalidateOverlay();
}
@Override
public void onStartTrackingTouch(SeekBar seekBar) {
}
@Override
public void onStopTrackingTouch(SeekBar seekBar) {
}
});
invalidateOverlay();
}
@Override
public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
switch (requestCode) {
case MY_PERMISSIONS_REQUEST_READ_EXTERNAL_STORAGE: {
// If request is cancelled, the result arrays are empty.
if (grantResults.length > 0
&& grantResults[0] == PackageManager.PERMISSION_GRANTED) {
// permission was granted, yay! Do the
// storage-related task you need to do.
pickImageFromGallery();
} else {
// permission denied, boo! Disable the
// functionality that depends on this permission.
Toast.makeText(MainActivity.this, "You must enable the permission in order to access this feature", Toast.LENGTH_LONG).show();
}
return;
}
// other 'case' lines to check for other
// permissions this app might request
}
}
private void pickImageFromGallery() {
Intent photoPickerIntent = new Intent(Intent.ACTION_PICK);
photoPickerIntent.setType("image/*");
startActivityForResult(photoPickerIntent, CHOOSE_BASE_PHOTO);
}
@Override
public void onActivityResult(final int requestCode, int resultCode, Intent imageReturnedIntent) {
super.onActivityResult(requestCode, resultCode, imageReturnedIntent);
switch (requestCode) {
case CHOOSE_BASE_PHOTO:
if (resultCode == Activity.RESULT_OK) {
final Uri imageUri = imageReturnedIntent.getData();
int dimens[] = getDimens(R.id.image_holder);
new BitmapDecoderTask()
.setDecodingImageReference(imageUri, getContentResolver())
.setRequiredWidth(dimens[0])
.setRequiredHeight(dimens[1])
.setListener(new BitmapDecoderTask.OnDecodeListener() {
@Override
public void onDecode(BitmapDecoderTask task, Bitmap bitmap) {
if (requestCode == CHOOSE_BASE_PHOTO) {
mSourceBitmap = bitmap;
}
invalidateOverlay();
}
})
.decode();
}
}
}
private void placeTextOnImage(CharSequence text) {
int dimens[] = getDimens(R.id.image_holder);
WaterMarkCreator.createBuilder().setText(text)
.setTextMaxWidth((int) convertDpToPixel(dimens[0], MainActivity.this))
.setTextSize((int) (210))
.setTextColor(Color.RED).build().setListener(new WaterMarkCreator.OnDecodeListener() {
@Override
public void onDecode(WaterMarkCreator task, Bitmap bitmap) {
mWatermarkBitmap = bitmap;
invalidateOverlay();
}
}).execute();
}
public static float convertDpToPixel(float dp, Context context) {
Resources resources = context.getResources();
DisplayMetrics metrics = resources.getDisplayMetrics();
float px = dp * ((float) metrics.densityDpi / DisplayMetrics.DENSITY_DEFAULT);
return px;
}
public void invalidateOverlay() {
if (mSourceBitmap != null && mWatermarkBitmap != null) {
int maxWidth = mSourceBitmap.getWidth();
int maxHeight = mSourceBitmap.getHeight();
SeekBar fromLeftSeek = (SeekBar) findViewById(R.id.left_seek);
fromLeftSeek.setMax(maxWidth);
fromLeftSeek.setProgress(mFromLeft);
SeekBar fromTopSeek = (SeekBar) findViewById(R.id.top_seek);
fromTopSeek.setMax(maxHeight);
fromTopSeek.setProgress(mFromTop);
// If you're working with larger bitmaps and continuously changing the scale value or angle value, you might notice the lag between slider change
// and the image position. To get rid of that, uncomment the following codes.
if (mOverlayBitmapTask != null && mOverlayBitmapTask.getStatus() == OverlayCreatorTask.Status.RUNNING) {
mOverlayBitmapTask.cancel(true);
}
mOverlayBitmapTask = new OverlayCreatorTask();
mOverlayBitmapTask.setBaseBitmap(mSourceBitmap)
.setMergeBitmap(mWatermarkBitmap)
.setMergeListener(new OverlayCreatorTask.OnMergeListener() {
@Override
public void onMerge(OverlayCreatorTask task, Bitmap mergedBitmap) {
baseImageView.setImageBitmap(mergedBitmap);
}
})
.setScale(mScale)
.setOffsets(mFromLeft, mFromTop)
.setAlpha(mAlpha)
.overlay();
} else {
if (mSourceBitmap != null) {
baseImageView.setImageBitmap(mSourceBitmap);
}
if (mWatermarkBitmap != null) {
Toast.makeText(this, "Base Image required first!", Toast.LENGTH_SHORT).show();
baseImageView.setImageBitmap(mWatermarkBitmap);
}
}
}
public int[] getDimens(int resId) {
int width = findViewById(resId).getMeasuredWidth();
int height = findViewById(resId).getMeasuredHeight();
return new int[]{width, height};
}
}
