Java Code Examples for android.widget.TextView#draw()

@NonNull
private BitmapDescriptor createClusterIcon(int clusterBucket) {
    @SuppressLint("InflateParams")
    TextView clusterIconView = (TextView) LayoutInflater.from(mContext)
            .inflate(R.layout.map_cluster_icon, null);
    clusterIconView.setBackground(createClusterBackground());
    clusterIconView.setTextColor(mIconStyle.getClusterTextColor());
    clusterIconView.setTextSize(TypedValue.COMPLEX_UNIT_PX,
            mIconStyle.getClusterTextSize());

    clusterIconView.setText(getClusterIconText(clusterBucket));

    clusterIconView.measure(View.MeasureSpec.UNSPECIFIED, View.MeasureSpec.UNSPECIFIED);
    clusterIconView.layout(0, 0, clusterIconView.getMeasuredWidth(),
            clusterIconView.getMeasuredHeight());

    Bitmap iconBitmap = Bitmap.createBitmap(clusterIconView.getMeasuredWidth(),
            clusterIconView.getMeasuredHeight(), Bitmap.Config.ARGB_8888);

    Canvas canvas = new Canvas(iconBitmap);
    clusterIconView.draw(canvas);

    return BitmapDescriptorFactory.fromBitmap(iconBitmap);
}
 

private static Bitmap captureTextBitmap(TextView textView) {
    Drawable background = textView.getBackground();
    textView.setBackground(null);
    int width = textView.getWidth() - textView.getPaddingLeft() - textView.getPaddingRight();
    int height = textView.getHeight() - textView.getPaddingTop() - textView.getPaddingBottom();
    if (width == 0 || height == 0) {
        return null;
    }
    Bitmap bitmap = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888);
    Canvas canvas = new Canvas(bitmap);
    canvas.translate(-textView.getPaddingLeft(), -textView.getPaddingTop());
    textView.draw(canvas);
    textView.setBackground(background);
    return bitmap;
}
 

private static Bitmap captureTextBitmap(TextView textView) {
    Drawable background = textView.getBackground();
    textView.setBackground(null);
    int width = textView.getWidth() - textView.getPaddingLeft() - textView.getPaddingRight();
    int height = textView.getHeight() - textView.getPaddingTop() - textView.getPaddingBottom();
    if (width == 0 || height == 0) {
        return null;
    }
    Bitmap bitmap = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888);
    Canvas canvas = new Canvas(bitmap);
    canvas.translate(-textView.getPaddingLeft(), -textView.getPaddingTop());
    textView.draw(canvas);
    textView.setBackground(background);
    return bitmap;
}
 

private static Bitmap captureTextBitmap(TextView textView) {
    Drawable background = textView.getBackground();
    textView.setBackground(null);
    int width = textView.getWidth() - textView.getPaddingLeft() - textView.getPaddingRight();
    int height = textView.getHeight() - textView.getPaddingTop() - textView.getPaddingBottom();
    if (width == 0 || height == 0) {
        return null;
    }
    Bitmap bitmap = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888);
    Canvas canvas = new Canvas(bitmap);
    canvas.translate(-textView.getPaddingLeft(), -textView.getPaddingTop());
    textView.draw(canvas);
    textView.setBackground(background);
    return bitmap;
}
 

private static Bitmap captureTextBitmap(TextView textView) {
  Drawable background = textView.getBackground();
  textView.setBackground(null);
  int width = textView.getWidth() - textView.getPaddingLeft() - textView.getPaddingRight();
  int height = textView.getHeight() - textView.getPaddingTop() - textView.getPaddingBottom();
  if (width == 0 || height == 0) {
    return null;
  }
  Bitmap bitmap = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888);
  Canvas canvas = new Canvas(bitmap);
  canvas.translate(-textView.getPaddingLeft(), -textView.getPaddingTop());
  textView.draw(canvas);
  textView.setBackground(background);
  return bitmap;
}
 

/** OP's original implementation fixed for real centering */
public static Bitmap imageWithText(Context context, Bitmap bitmap, GenerateParams params) {
	TextView view = new TextView(context);
	view.setText(params.text);
	view.setTextColor(params.color);
	view.setBackgroundColor(params.background);
	view.setTypeface(null, Typeface.BOLD);
	view.setGravity(Gravity.CENTER);
	view.setTextSize(20);
	Canvas canvas = new Canvas(bitmap);
	view.measure(makeMeasureSpec(canvas.getWidth(), EXACTLY), makeMeasureSpec(canvas.getHeight(), EXACTLY));
	view.layout(0, 0, canvas.getWidth(), canvas.getHeight());
	view.draw(canvas);
	return bitmap;
}
 

@Override
protected void onCreate(Bundle savedInstanceState) {
	super.onCreate(savedInstanceState);

	final FrameLayout root = new FrameLayout(this);
	setContentView(root);

	final TextView textView = new TextView(this);
	textView.setText("test");
	textView.setLayoutParams(new FrameLayout.LayoutParams(ViewGroup.LayoutParams.WRAP_CONTENT, ViewGroup.LayoutParams.WRAP_CONTENT, Gravity.CENTER));
	textView.setTextColor(Color.WHITE);
	textView.setTextSize(40);
	textView.setGravity(Gravity.CENTER_HORIZONTAL);
	textView.setBackgroundColor(Color.RED);
	textView.setPadding(100, 20, 100, 20);

	final int measureSpec = View.MeasureSpec.makeMeasureSpec(0, View.MeasureSpec.UNSPECIFIED);
	textView.measure(measureSpec, measureSpec);
	textView.layout(0, 0, textView.getMeasuredWidth(), textView.getMeasuredHeight());
	final Bitmap b = Bitmap.createBitmap(textView.getWidth(), textView.getHeight(), Bitmap.Config.ARGB_8888);
	final Canvas c = new Canvas(b);
	textView.draw(c);

	final ImageView imageView = new ImageView(this);
	imageView.setLayoutParams(new FrameLayout.LayoutParams(ViewGroup.LayoutParams.WRAP_CONTENT, ViewGroup.LayoutParams.WRAP_CONTENT, Gravity.CENTER));
	imageView.setImageBitmap(createReflection(b, 1, 10));
	root.addView(imageView);
}
 

private int findLineFor(String string) {
	int line = findExistingString(string);
	if (line >= 0) {
		return line;
	}

	int width = (int) Math.ceil(computeWidth(string) + 25);
	renderer = new TextView(context.getAndroidContext());
	renderer.setTextColor(Color.WHITE);
	renderer.setSingleLine(true);
	renderer.setTextSize(TypedValue.COMPLEX_UNIT_PX, getScaledSize());
	renderer.setText(string);

	int firstLine = findLineToUse();
	// System.out.println("string cache miss for " + string +
	// ", allocating new line: " + firstLine);
	int lastLine = firstLine;

	for (int x = 0; x < width; x += TEXTURE_WIDTH) {
		if (x == 0) {
			line = firstLine;
		} else {
			line = findLineToUse();
			nextTile[lastLine] = line;
			linestrings[line] = null;
			linewidths[line] = -1;
		}
		// important to not allow cycles.
		lastused[line] = Integer.MAX_VALUE;
		// just to be sure.
		nextTile[line] = -1;

		// render the new text to that line.
		Bitmap bitmap = Bitmap.createBitmap(TEXTURE_WIDTH, lineheight, Bitmap.Config.ALPHA_8);
		Canvas canvas = new Canvas(bitmap);
		renderer.layout(0, 0, width, lineheight);
		canvas.translate(-x, 0);
		renderer.draw(canvas);
		// canvas.translate(50, .8f * lineheight);
		int points = lineheight * TEXTURE_WIDTH;
		ByteBuffer alpha8 = ByteBuffer.allocateDirect(points);
		bitmap.copyPixelsToBuffer(alpha8);
		ByteBuffer updateBuffer;
		if(context instanceof GLES20DrawContext) {
			updateBuffer = ByteBuffer.allocateDirect(points*4);
			for(int i = 0;i != points;i++) {
				updateBuffer.putInt(0xFFFFFF00|alpha8.get(i));
			}
		} else {
			updateBuffer = alpha8;
		}
		updateBuffer.rewind();
		context.updateFontTexture(texture, 0, line*lineheight, TEXTURE_WIDTH, lineheight, updateBuffer);
		lastLine = line;
	}
	lastused[firstLine] = lastUsedCount++;
	linestrings[firstLine] = string;
	linewidths[firstLine] = width;

	checkInvariants();
	return firstLine;
}