Question

I have a PictureBox that its size is fixed to 480×360 pixels. I write some text using DrawString on the image in the picturebox. If size of the image that user is selecting for the picturebox is already 480×360, it is no problem!

Problems starts when user is adding an image with smaller or greated size of default 480×360 pixels. In this case the default fonr size that I am writing strings on the images will be either too big or too small.

Is there a way to select font size depending on the images width and height? The pictures I am using in the program mostly are 4:3 ratio.

At the moment I am using the code below…it is somehow working but it is not a good way for doing so. What can be a smarter way?!

        private int GetProperFontSize()
    {
        var width = _bitmap.Width;

        if(width > 480 && width <= 680)
        {
            return 20;
        }

        if (width > 680 && width <= 800)
        {
            return 24;
        }

        if (width > 800 && width <= 1024)
        {
            return 32;
        }

        if (width > 1024 && width <= 1600)
        {
            return 44;
        }

        if (width > 1600 && width <= 2048)
        {
            return 50;
        }

        if (width > 2048 && width <= 2560)
        {
            return 66;
        }

        if (width > 2560 && width <= 6000)
        {
            return 80;
        }

        return 16;
    }

Answer 1

you can prohibit the user from using images of a smaller size…with the larger size simply scale it to the constrained width. you can also try things like setting a background color of black, centering the image, and then placing a white band at the bottom for the text like a polaroid…