[RESOLVED] Drawn Text looks pixelated!
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Thread: [RESOLVED] Drawn Text looks pixelated!

  1. #1
    Join Date
    Feb 2012
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    16

    [RESOLVED] Drawn Text looks pixelated!

    hi there,

    the following code draws a text on the picture box, but it looks pixelated and seems bold, no matter what font-face and font-size i use and no matter i use FontStyle.Regular or not...

    on the other hand, if i use any other color than black, the text will have a pixelated black outline as well!

    Code:
    System.Drawing.Font ft = new System.Drawing.Font("Verdana", 8.25f);
    br = System.Drawing.Brushes.Black;
    
    Bitmap bm = new Bitmap(picturebox1.Width, picturebox1.Height);
    Graphics g = Graphics.FromImage(bm);
    
    g.DrawString("My String", ft, br, 10, 10);
    
    picturebox1.Image = bm;
    ft.Dispose();
    g.Dispose();
    NOTE: since i'm drawing something else on the picture box, i'm using BITMAP to prevent the drawing to be cleared as soon as the control is refreshed...
    Last edited by sean.aulason; March 5th, 2012 at 01:06 AM.

  2. #2
    Join Date
    Feb 2011
    Location
    United States
    Posts
    1,000

    Re: Drawn Text looks pixelated!

    You need to give the Graphics object a hint how to render text:

    Code:
    Graphics g = //From somewhere
    
    //Set this before rendering any text
    g.TextRenderingHint = TextRenderingHint.AntiAlias;
    
    g.DrawString(...); //Should look nice now
    I think I've used this before with good results. Post again if it doesn't resolve the issue.

    See the relevat MSDN link: http://msdn.microsoft.com/en-us/library/a619zh6z.aspx
    Best Regards,

    BioPhysEngr
    http://blog.biophysengr.net
    --
    All advice is offered in good faith only. You are ultimately responsible for effects of your programs and the integrity of the machines they run on.

  3. #3
    Join Date
    Feb 2012
    Posts
    16

    Re: Drawn Text looks pixelated!

    here is a snapshot of what i said about the text. as you see the text is jagged and seems bold!



    EDIT:
    thanks a lot BioPhysEngr!

    we posted at the same time. it works like a charm.
    Last edited by sean.aulason; March 6th, 2012 at 01:08 AM.

  4. #4
    Join Date
    Feb 2011
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    Re: Drawn Text looks pixelated!

    You can also do a form of anti-aliasing by rendering the image 2x or 4x larger than you want that final image to be and then scaling it down. As I recall, the downscaling algorithm in the System.Drawing namespace isn't very advanced (I don't think it does cubic or sync sampling or anything), so only use this option if you are using C# to output an image you will later manipulate in a dedicated image editor (e.g. Photoshop, GIMP, etc).

    However, try the TextHint thing first. This option is not preferable.
    Best Regards,

    BioPhysEngr
    http://blog.biophysengr.net
    --
    All advice is offered in good faith only. You are ultimately responsible for effects of your programs and the integrity of the machines they run on.

  5. #5
    Join Date
    Feb 2012
    Posts
    16

    Re: Drawn Text looks pixelated!

    TextHint does the job for me. thank you again, BioPhysEngr...

  6. #6
    Join Date
    Feb 2011
    Location
    United States
    Posts
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    Re: [RESOLVED] Drawn Text looks pixelated!

    Glad to help! The 2D graphics libraries are pretty powerful, but sometimes it takes a few tricks to make them work well. :-)
    Best Regards,

    BioPhysEngr
    http://blog.biophysengr.net
    --
    All advice is offered in good faith only. You are ultimately responsible for effects of your programs and the integrity of the machines they run on.

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