diff --git a/app/src/main/java/anupam/acrylic/EasyPaint.java b/app/src/main/java/anupam/acrylic/EasyPaint.java index d83d29d..5891f8f 100644 --- a/app/src/main/java/anupam/acrylic/EasyPaint.java +++ b/app/src/main/java/anupam/acrylic/EasyPaint.java @@ -1,714 +1,714 @@ /* * Copyright (C) 2014, 2016 Valerio Bozzolan & James Dearing (TheOpenSourceNinja) * * 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. * * This program 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 this program. If not, see . */ package anupam.acrylic; import android.Manifest; import android.annotation.SuppressLint; import android.app.AlertDialog; import android.content.ActivityNotFoundException; import android.content.Context; import android.content.Intent; import android.content.SharedPreferences; import android.content.pm.ActivityInfo; import android.content.pm.PackageManager; import android.graphics.Bitmap; import android.graphics.Bitmap.CompressFormat; import android.graphics.BitmapShader; import android.graphics.BlurMaskFilter; import android.graphics.Canvas; import android.graphics.Color; import android.graphics.EmbossMaskFilter; import android.graphics.MaskFilter; import android.graphics.Paint; import android.graphics.Path; import android.graphics.Point; import android.graphics.PorterDuff.Mode; import android.graphics.PorterDuffXfermode; import android.graphics.Shader; import android.net.Uri; import android.os.Build; import android.os.Bundle; import android.os.Handler; import android.provider.MediaStore; import android.renderscript.Allocation; import android.renderscript.Element; import android.renderscript.RSIllegalArgumentException; import android.renderscript.RenderScript; import android.renderscript.ScriptIntrinsicBlur; import android.util.Log; import android.view.Display; import android.view.LayoutInflater; import android.view.Menu; import android.view.MenuItem; import android.view.MotionEvent; import android.view.View; import android.view.ViewGroup; import android.widget.SeekBar; import android.widget.TextView; import android.widget.Toast; import com.nabinbhandari.android.permissions.PermissionHandler; import com.nabinbhandari.android.permissions.Permissions; import java.io.File; import java.io.FileNotFoundException; import java.io.FileOutputStream; import java.io.IOException; import java.util.Calendar; @SuppressLint("ClickableViewAccessibility") public class EasyPaint extends GraphicsActivity implements ColorPickerDialog.OnColorChangedListener { private static final float TOUCH_TOLERANCE = 4; private static final int CHOOSE_IMAGE = 0; public static int DEFAULT_BRUSH_SIZE = 10; private static int MAX_POINTERS = 10; private Paint mPaint; private MaskFilter mEmboss; private MaskFilter mBlur; private boolean doubleBackToExitPressedOnce = false; private MyView contentView; private boolean waitingForBackgroundColor = false; //If true and colorChanged() is called, fill the background, else mPaint.setColor() private boolean extractingColor = false; //If this is true, the next touch event should extract a color rather than drawing a line. @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); // it removes the title from the actionbar(more space for icons?) // this.getActionBar().setDisplayShowTitleEnabled(false); setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT); contentView = new MyView(this); setContentView(contentView); mPaint = new Paint(); mPaint.setAntiAlias(true); mPaint.setDither(true); mPaint.setColor(Color.GREEN); mPaint.setStyle(Paint.Style.STROKE); mPaint.setStrokeJoin(Paint.Join.ROUND); mPaint.setStrokeCap(Paint.Cap.ROUND); mPaint.setStrokeWidth(DEFAULT_BRUSH_SIZE); // Where did these magic numbers come from? What do they mean? Can I change them? ~TheOpenSourceNinja // Absolutely random numbers in order to see the emboss. asd! ~Valerio mEmboss = new EmbossMaskFilter(new float[]{1, 1, 1}, 0.4f, 6, 3.5f); mBlur = new BlurMaskFilter(5, BlurMaskFilter.Blur.NORMAL); if (isFirstTime()) { AlertDialog.Builder alert = new AlertDialog.Builder(this); alert.setTitle(R.string.app_name); alert.setMessage(R.string.app_description); alert.setNegativeButton(R.string.continue_fuck, (dialog, whichButton) -> Toast.makeText(getApplicationContext(), R.string.here_is_your_canvas, Toast.LENGTH_SHORT).show()); alert.show(); } else { Toast.makeText(getApplicationContext(), R.string.here_is_your_canvas, Toast.LENGTH_SHORT).show(); } loadFromIntents(); } @Override public void onBackPressed() { if (doubleBackToExitPressedOnce) { super.onBackPressed(); return; } this.doubleBackToExitPressedOnce = true; Toast.makeText(this, R.string.press_back_again, Toast.LENGTH_SHORT) .show(); new Handler().postDelayed(() -> doubleBackToExitPressedOnce = false, 3000); } public void colorChanged(int color) { if (waitingForBackgroundColor) { waitingForBackgroundColor = false; contentView.mBitmapBackground.eraseColor(color); //int[] colors = new int[1]; //colors[0] = color; //contentView.mBitmapBackground = Bitmap.createBitmap(colors, contentView.mBitmapBackground.getWidth(), contentView.mBitmapBackground.getHeight(), contentView.mBitmapBackground.getConfig()); } else { // Changes the color of the action bar when the pencil color is changed // TODO: Figure out how to deal with choosing white color /*ActionBar actionBar = getActionBar(); ColorDrawable colorDrawable = new ColorDrawable(color); actionBar.setBackgroundDrawable(colorDrawable);*/ mPaint.setColor(color); } } @Override public boolean onCreateOptionsMenu(Menu menu) { // Inflate the menu; this adds items to the action bar if it is present. getMenuInflater().inflate(R.menu.main, menu); return true; } @Override public boolean onPrepareOptionsMenu(Menu menu) { super.onPrepareOptionsMenu(menu); return true; } @Override public boolean onOptionsItemSelected(MenuItem item) { mPaint.setXfermode(null); mPaint.setAlpha(0xFF); switch (item.getItemId()) { case R.id.extract_color_menu: { Toast.makeText(getApplicationContext(), R.string.tap_to_extract_color, Toast.LENGTH_LONG).show(); extractingColor = true; return true; } case R.id.brush_menu: mPaint.setShader(null); mPaint.setMaskFilter(null); return true; case R.id.palette_menu: new ColorPickerDialog(this, this, mPaint.getColor()).show(); return true; case R.id.emboss_submenu: mPaint.setShader(null); mPaint.setMaskFilter(mEmboss); return true; case R.id.smudge_submenu: { /* I considered making this what happens when the blur_menu item is selected, but * that could surprise users who are used to blur_menu's previous functionality, so * I made this new smudge_menu item instead. I don't like calling it "Smudge" because * this isn't exactly the same as what Photoshop and GIMP refer to as "Smudge", but I * couldn't think of a better name that isn't "Blur". * ~TheOpenSourceNinja */ if (Build.VERSION.SDK_INT >= 17) { /* Basically what we're doing here is copying the entire foreground bitmap, * blurring it, then telling mPaint to use that instead of a solid color. */ RenderScript rs = RenderScript.create(getApplicationContext()); ScriptIntrinsicBlur script; try { script = ScriptIntrinsicBlur.create(rs, Element.RGBA_8888(rs)); } catch (RSIllegalArgumentException e) { script = ScriptIntrinsicBlur.create(rs, Element.U8_4(rs)); } script.setRadius(20f); //The radius must be between 0 and 25. Smaller radius means less blur. I just picked 20 randomly. ~TheOpenSourceNinja //copy the foreground: (n API level 18+, this will be really fast because it uses a shared memory model, thus not really copying everything) Allocation input = Allocation.createFromBitmap(rs, contentView.mBitmap); script.setInput(input); //allocate memory for the output: Allocation output = Allocation.createTyped(rs, input.getType()); //Blur the image: script.forEach(output); //Store the blurred image as a Bitmap object: Bitmap blurred = Bitmap.createBitmap(contentView.mBitmap); output.copyTo(blurred); //Tell mPaint to use the blurred image: Shader shader = new BitmapShader(blurred, Shader.TileMode.CLAMP, Shader.TileMode.CLAMP); mPaint.setShader(shader); } else { Toast.makeText(this.getApplicationContext(), R.string.ability_disabled_need_newer_api_level, Toast.LENGTH_LONG).show(); } return true; } case R.id.blur_submenu: mPaint.setShader(null); mPaint.setMaskFilter(mBlur); return true; case R.id.size_menu: { LayoutInflater inflater = (LayoutInflater) getSystemService(Context.LAYOUT_INFLATER_SERVICE); View layout = inflater.inflate(R.layout.brush, (ViewGroup) findViewById(R.id.root)); AlertDialog.Builder builder = new AlertDialog.Builder(this) .setView(layout); builder.setTitle(R.string.choose_width); final AlertDialog alertDialog = builder.create(); alertDialog.show(); SeekBar sb = (SeekBar) layout.findViewById(R.id.brushSizeSeekBar); sb.setProgress(getStrokeSize()); final TextView txt = (TextView) layout .findViewById(R.id.sizeValueTextView); txt.setText(String.format( getResources().getString(R.string.your_selected_size_is), getStrokeSize() + 1)); sb.setOnSeekBarChangeListener(new SeekBar.OnSeekBarChangeListener() { public void onProgressChanged(SeekBar seekBar, final int progress, boolean fromUser) { // Do something here with new value mPaint.setStrokeWidth(progress); txt.setText(String.format( getResources().getString( R.string.your_selected_size_is), progress + 1)); } @Override public void onStartTrackingTouch(SeekBar seekBar) { // TODO Auto-generated method stub } @Override public void onStopTrackingTouch(SeekBar seekBar) { // TODO Auto-generated method stub } }); return true; } case R.id.erase_menu: { LayoutInflater inflater_e = (LayoutInflater) getSystemService(Context.LAYOUT_INFLATER_SERVICE); View layout_e = inflater_e.inflate(R.layout.brush, (ViewGroup) findViewById(R.id.root)); AlertDialog.Builder builder_e = new AlertDialog.Builder(this) .setView(layout_e); builder_e.setTitle(R.string.choose_width); final AlertDialog alertDialog_e = builder_e.create(); alertDialog_e.show(); SeekBar sb_e = (SeekBar) layout_e.findViewById(R.id.brushSizeSeekBar); sb_e.setProgress(getStrokeSize()); final TextView txt_e = (TextView) layout_e .findViewById(R.id.sizeValueTextView); txt_e.setText(String.format( getResources().getString(R.string.your_selected_size_is), getStrokeSize() + 1)); sb_e.setOnSeekBarChangeListener(new SeekBar.OnSeekBarChangeListener() { public void onProgressChanged(SeekBar seekBar, final int progress, boolean fromUser) { // Do something here with new value mPaint.setStrokeWidth(progress); txt_e.setText(String.format( getResources().getString( R.string.your_selected_size_is), progress + 1)); } public void onStartTrackingTouch(SeekBar seekBar) { // TODO Auto-generated method stub } public void onStopTrackingTouch(SeekBar seekBar) { // TODO Auto-generated method stub } }); mPaint.setShader(null); mPaint.setXfermode(new PorterDuffXfermode(Mode.CLEAR)); return true; } case R.id.clear_foreground_submenu: { contentView.mBitmap.eraseColor(Color.TRANSPARENT); return true; } case R.id.clear_background_submenu: { contentView.mBitmapBackground.eraseColor(Color.TRANSPARENT); return true; } case R.id.clear_everything_submenu: { contentView.mBitmap.eraseColor(Color.TRANSPARENT); contentView.mBitmapBackground.eraseColor(Color.TRANSPARENT); return true; } case R.id.save_menu: takeScreenshot(true); break; case R.id.share_menu: { File screenshotPath = takeScreenshot(false); Intent i = new Intent(); i.setAction(Intent.ACTION_SEND); i.setType("image/png"); i.putExtra(Intent.EXTRA_SUBJECT, getString(R.string.share_title_template)); i.putExtra(Intent.EXTRA_TEXT, getString(R.string.share_text_template)); i.putExtra(Intent.EXTRA_STREAM, Uri.fromFile(screenshotPath)); try { startActivity(Intent.createChooser(i, getString(R.string.toolbox_share_title))); } catch (ActivityNotFoundException ex) { Toast.makeText(this.getApplicationContext(), R.string.no_way_to_share, Toast.LENGTH_LONG).show(); } break; } case R.id.open_image_menu: { Intent intent = new Intent(); intent.setType("image/*"); //The argument is an all-lower-case MIME type - in this case, any image format. intent.setAction(Intent.ACTION_GET_CONTENT); intent.putExtra(Intent.EXTRA_ALLOW_MULTIPLE, false); //This is false by default, but I felt that for code clarity it was better to be explicit: we only want one image startActivityForResult(Intent.createChooser(intent, getResources().getString(R.string.select_image_to_open)), CHOOSE_IMAGE); break; } case R.id.fill_background_with_color: { waitingForBackgroundColor = true; new ColorPickerDialog(this, this, contentView.mBitmapBackground.getPixel(0, 0)).show(); return true; } case R.id.about_menu: startActivity(new Intent(this, AboutActivity.class)); break; } return super.onOptionsItemSelected(item); } private boolean isWritePermissionGranted() { - return Build.VERSION.SDK_INT <= Build.VERSION_CODES.M || + return Build.VERSION.SDK_INT < Build.VERSION_CODES.M || checkSelfPermission(Manifest.permission.WRITE_EXTERNAL_STORAGE) == PackageManager.PERMISSION_GRANTED; } /** * This takes the screenshot of the whole screen. Is this a good thing? */ private File takeScreenshot(boolean showToast) { // First we must check that permission has been granted, and if not, ask if (isWritePermissionGranted()) { // Do nothing. } else { Permissions.check(this, Manifest.permission.WRITE_EXTERNAL_STORAGE, null, new PermissionHandler() { @Override public void onGranted() { new AlertDialog.Builder(EasyPaint.this) .setMessage("Thanks for granting permission! Please press save again.") .show(); } }); } View v = findViewById(R.id.CanvasId); v.setDrawingCacheEnabled(true); Bitmap cachedBitmap = v.getDrawingCache(); Bitmap copyBitmap = cachedBitmap.copy(Bitmap.Config.ARGB_8888, true); v.destroyDrawingCache(); FileOutputStream output = null; File file; try { File path = Places.getScreenshotFolder(); Calendar cal = Calendar.getInstance(); file = new File(path, cal.get(Calendar.YEAR) + "_" + (1 + cal.get(Calendar.MONTH)) + "_" + cal.get(Calendar.DAY_OF_MONTH) + "_" + cal.get(Calendar.HOUR_OF_DAY) + "_" + cal.get(Calendar.MINUTE) + "_" + cal.get(Calendar.SECOND) + ".png"); output = new FileOutputStream(file); copyBitmap.compress(CompressFormat.PNG, 100, output); } catch (FileNotFoundException e) { file = null; e.printStackTrace(); } finally { if (output != null) { try { output.close(); } catch (IOException e) { e.printStackTrace(); } } } if (file != null) { if (showToast) Toast.makeText( getApplicationContext(), String.format( getResources().getString( R.string.saved_your_location_to), file.getAbsolutePath()), Toast.LENGTH_LONG) .show(); // sending a broadcast to the media scanner so it will scan the new // screenshot. Intent requestScan = new Intent( Intent.ACTION_MEDIA_SCANNER_SCAN_FILE); requestScan.setData(Uri.fromFile(file)); sendBroadcast(requestScan); return file; } else { return null; } } private boolean isFirstTime() { SharedPreferences preferences = getPreferences(MODE_PRIVATE); boolean ranBefore = preferences.getBoolean("RanBefore", false); if (!ranBefore) { // first time SharedPreferences.Editor editor = preferences.edit(); editor.putBoolean("RanBefore", true); editor.commit(); } return !ranBefore; } private int getStrokeSize() { return (int) mPaint.getStrokeWidth(); } public void onActivityResult(int requestCode, int resultCode, Intent data) { super.onActivityResult(requestCode, resultCode, data); if (resultCode != RESULT_CANCELED) { //"The resultCode will be RESULT_CANCELED if the activity explicitly returned that, didn't return any result, or crashed during its operation." (quote from https://developer.android.com/reference/android/app/Activity.html#onActivityResult(int,%20int,%20android.content.Intent) ) if (requestCode == CHOOSE_IMAGE) { setBackgroundUri(data.getData()); } } } public void setBackgroundUri(Uri uri) { if (uri == null) { return; } try { //I don't like loading both full-sized and reduced-size copies of the image (the larger copy can use a lot of memory), but I couldn't find any other way to do this. Bitmap fullsize = MediaStore.Images.Media.getBitmap(this.getContentResolver(), uri); contentView.mBitmapBackground = Bitmap.createScaledBitmap(fullsize, contentView.mBitmap.getWidth(), contentView.mBitmap.getHeight(), true); //contentView.mCanvas = new Canvas(contentView.mBitmapBackground); } catch (IOException exception) { //TODO: How should we handle this exception? } } public void loadFromIntents() { Intent intent = getIntent(); String action = intent.getAction(); String type = intent.getType(); System.out.println("Intentoso " + action + " type " + type); if (Intent.ACTION_SEND.equals(action) && type != null) { if (type.startsWith("image/")) { setBackgroundUri((Uri) intent.getParcelableExtra(Intent.EXTRA_STREAM)); } } } public class MyView extends View { public Bitmap mBitmap; private Bitmap mBitmapBackground; private Canvas mCanvas; private Paint mBitmapPaint; private MultiLinePathManager multiLinePathManager; public MyView(Context c) { super(c); setId(R.id.CanvasId); Display display = getWindowManager().getDefaultDisplay(); Point size = new Point(display.getWidth(), display.getHeight()); mBitmapBackground = Bitmap.createBitmap(size.x, size.y, Bitmap.Config.ARGB_8888); mBitmap = Bitmap.createBitmap(size.x, size.y, Bitmap.Config.ARGB_8888); mCanvas = new Canvas(mBitmap); mBitmapPaint = new Paint(Paint.DITHER_FLAG); multiLinePathManager = new MultiLinePathManager(MAX_POINTERS); } @Override protected void onSizeChanged(int w, int h, int oldw, int oldh) { super.onSizeChanged(w, h, oldw, oldh); } @Override protected void onDraw(Canvas canvas) { canvas.drawColor(0xFFFFFFFF); canvas.drawBitmap(mBitmapBackground, 0, 0, new Paint()); canvas.drawBitmap(mBitmap, 0, 0, mBitmapPaint); for (int i = 0; i < multiLinePathManager.superMultiPaths.length; i++) { canvas.drawPath(multiLinePathManager.superMultiPaths[i], mPaint); } } @Override public boolean onTouchEvent(MotionEvent event) { LinePath linePath; int index; int id; int eventMasked = event.getActionMasked(); switch (eventMasked) { case MotionEvent.ACTION_DOWN: case MotionEvent.ACTION_POINTER_DOWN: { index = event.getActionIndex(); id = event.getPointerId(index); if (extractingColor) { //If the user chose the 'extract color' menu option, the touch event indicates where they want to extract the color from. extractingColor = false; View v = findViewById(R.id.CanvasId); v.setDrawingCacheEnabled(true); Bitmap cachedBitmap = v.getDrawingCache(); int newColor = cachedBitmap.getPixel(Math.round(event.getX(index)), Math.round(event.getY(index))); v.destroyDrawingCache(); colorChanged(newColor); Toast.makeText(getApplicationContext(), R.string.color_extracted, Toast.LENGTH_SHORT).show(); } else { linePath = multiLinePathManager.addLinePathWithPointer(id); if (linePath != null) { linePath.touchStart(event.getX(index), event.getY(index)); } else { Log.e("anupam", "Too many fingers!"); } } break; } case MotionEvent.ACTION_MOVE: for (int i = 0; i < event.getPointerCount(); i++) { id = event.getPointerId(i); index = event.findPointerIndex(id); linePath = multiLinePathManager.findLinePathFromPointer(id); if (linePath != null) { linePath.touchMove(event.getX(index), event.getY(index)); } } break; case MotionEvent.ACTION_UP: case MotionEvent.ACTION_POINTER_UP: case MotionEvent.ACTION_CANCEL: index = event.getActionIndex(); id = event.getPointerId(index); linePath = multiLinePathManager.findLinePathFromPointer(id); if (linePath != null) { linePath.lineTo(linePath.getLastX(), linePath.getLastY()); // Commit the path to our offscreen mCanvas.drawPath(linePath, mPaint); // Kill this so we don't double draw linePath.reset(); // Allow this LinePath to be associated to another idPointer linePath.disassociateFromPointer(); } break; } invalidate(); return true; } private class LinePath extends Path { private Integer idPointer; private float lastX; private float lastY; LinePath() { this.idPointer = null; } public float getLastX() { return lastX; } public float getLastY() { return lastY; } public void touchStart(float x, float y) { this.reset(); this.moveTo(x, y); this.lastX = x; this.lastY = y; } public void touchMove(float x, float y) { float dx = Math.abs(x - lastX); float dy = Math.abs(y - lastY); if (dx >= TOUCH_TOLERANCE || dy >= TOUCH_TOLERANCE) { this.quadTo(lastX, lastY, (x + lastX) / 2, (y + lastY) / 2); lastX = x; lastY = y; } } public boolean isDisassociatedFromPointer() { return idPointer == null; } public boolean isAssociatedToPointer(int idPointer) { return this.idPointer != null && (int) this.idPointer == idPointer; } public void disassociateFromPointer() { idPointer = null; } public void associateToPointer(int idPointer) { this.idPointer = idPointer; } } private class MultiLinePathManager { public LinePath[] superMultiPaths; MultiLinePathManager(int maxPointers) { superMultiPaths = new LinePath[maxPointers]; for (int i = 0; i < maxPointers; i++) { superMultiPaths[i] = new LinePath(); } } public LinePath findLinePathFromPointer(int idPointer) { for (LinePath superMultiPath : superMultiPaths) { if (superMultiPath.isAssociatedToPointer(idPointer)) { return superMultiPath; } } return null; } public LinePath addLinePathWithPointer(int idPointer) { for (LinePath superMultiPath : superMultiPaths) { if (superMultiPath.isDisassociatedFromPointer()) { superMultiPath.associateToPointer(idPointer); return superMultiPath; } } return null; } } } }