Question

I am drawing a text on android canvas using the following piece of code

        Rect rect = new Rect();
        paint.getTextBounds(text, 0, text.length(), rect);
        canvas.translate(xPosition + position.getX(), yPosition + position.getY());
        paint.setColor(Color.BLUE);
        paint.setStyle(Style.STROKE);
        canvas.drawRect(rect, paint);
        paint.setStyle(Style.FILL);
        paint.setColor(text_color);
        canvas.translate(-(xPosition + position.getX()), -(yPosition + position.getY()));
        canvas.rotate(getDegreesFromRadians(angle), xPosition + position.getX() + rect.exactCenterX(), yPosition + position.getY() + rect.exactCenterY());
        canvas.drawText(text, xPosition + position.getX(), yPosition + position.getY(), paint);

This code takes care of the rotation of the text and it works fine. I am drawing a blue rectangle around the text using the above code. Now my problem is that the rectangle is not rotating along with the text. It still remains the same. Is there any way to rotate the rectangle drawn in android canvas?

Answer 1

I found my own answer. I used the following code

Rect rect = new Rect();
        paint.setColor(text_color);
        paint.setStyle(Style.FILL);
        paint.getTextBounds(text, 0, text.length(), rect);
        canvas.translate(xPosition + position.getX(), yPosition + position.getY());
        canvas.translate(-(xPosition + position.getX()), -(yPosition + position.getY()));
        canvas.rotate(getDegreesFromRadians(angle), xPosition + position.getX() + rect.exactCenterX(), yPosition + position.getY() + rect.exactCenterY());
        canvas.drawText(text, xPosition + position.getX(), yPosition + position.getY(), paint);
        paint.getTextBounds(text, 0, text.length(), rect);
        canvas.translate(xPosition + position.getX(), yPosition + position.getY());
        paint.setColor(Color.BLUE);
        paint.setStyle(Style.STROKE);
        paint.setStrokeWidth(4);
        rect = new Rect(rect.left - 10, rect.top - 10, rect.right + 10, rect.bottom + 10);
        canvas.drawRect(rect, paint);

The thing is the whole canvas is being rotated for rotating the text. So i just need to draw the rectangle after the rotation of the canvas.