android canvas draw text in the triangle

Issue

In this Image I want text to totally be in the triangle with CYAN color.
I have created my own ImageView:

public class BookImageView extends android.support.v7.widget.AppCompatImageView {

private static final Float DISCOUNT_SIDE_SIZE = 0.33333F;

private Bitmap bitmap;

private Paint drawPaint = new Paint();
private Paint trianglePaint = new Paint();

{
    trianglePaint.setColor(Constants.DISCOUNT_COLOR);
    trianglePaint.setStyle(Paint.Style.FILL);
    trianglePaint.setShadowLayer(10.0f, 10.0f, 10.0f, Color.parseColor("#7f000000"));
    trianglePaint.setAntiAlias(true);

    drawPaint.setColor(Color.BLACK);
    drawPaint.setTypeface(Typeface.create(Typeface.DEFAULT, Typeface.BOLD));
    drawPaint.setShadowLayer(1f, 0f, 1f, Color.BLACK);
}

// Constractors ...    

@Override
protected void onDraw(Canvas canvas) {
    super.onDraw(canvas);
    if (bitmap != null) {
        Bitmap tempBitmap = Bitmap.createBitmap(bitmap.getWidth(), bitmap.getHeight(), Bitmap.Config.RGB_565);
        Canvas tempCanvas = new Canvas(tempBitmap);
        tempCanvas.drawBitmap(bitmap, 0, 0, null);

        Path path = new Path();
        path.setFillType(Path.FillType.EVEN_ODD);

        float size = bitmap.getWidth() * DISCOUNT_SIDE_SIZE;

        path.lineTo(size, 0);
        path.lineTo(0, size);
        path.lineTo(0, 0);
        path.close();

        tempCanvas.drawPath(path, trianglePaint);

        float scale = getResources().getDisplayMetrics().density;

        drawPaint.setTextSize((int) (14 * scale));

        Rect textBounds = new Rect();
        drawPaint.getTextBounds("50%", 0, "50%".length(), textBounds);
        int x = (int) (size / 2) - textBounds.width() / 2;
        int y = (int) (size / 2) - textBounds.height() / 2;

        tempCanvas.save();
        tempCanvas.rotate(-45, x, y);
        tempCanvas.drawText("50%", x, y, drawPaint);
        tempCanvas.restore();

        setImageDrawable(new BitmapDrawable(getContext().getResources(), tempBitmap));
    }
}

@Override
public void setImageBitmap(Bitmap bitmap) {
    this.bitmap = bitmap;
    invalidate();
}

}

what can I do to solve this problem ?

Solution

You can try something like this

1) Measure the width of your text Use measureText

2) From the point you are drawing calculate the width remaining to draw

3) Now depending on the use case you can curtail the length of text or scale the text as needed

    int textWidthRequired = (int) drawPaint.measureText(textToDraw);
    int widthRemainingToDraw = totalWidth/2 - textDrawX;
    if(textWidthRequired > widthRemainingToDraw){
        //handling 
    }
    // draw text
   tempCanvas.drawText(textToDraw,textDrawX, textDrawY, drawPaint);

Answered By - Sunny Kumar Aditya