[Lazarus] TFPImageCanvas and TFreeTypeFont colors

Michael Van Canneyt michael at freepascal.org
Fri May 10 21:00:37 CEST 2013

On Fri, 10 May 2013, Leonardo M. Ramé wrote:

> On 2013-05-10 20:34:00 +0200, Michael Van Canneyt wrote:
>> On Fri, 10 May 2013, Leonardo M. Ramé wrote:
>>> Hi, I'm writing text over TFPImageCanvas using a TFreeTypeFont, and I
>>> noted some times, the text contains wrong colors around the pixels of
>>> the text.
>>> I've attached an image to show the problem. As you can see, the text
>>> over light gray and white is adding red dots, that doesn't have to be
>>> there.
>>> The resulting image is an TFPMemoryImage composed of two TFPImageCanvas
>>> one containing the image and a 2nd one containing the text.
>>> How can I avoid those red dots?.
>> Are you using antialiasing ?
>> If so, try switching it off.
> Thanks, after setting AntiAliased to false, the red dots where removed,
> but fonts look really ugly (like shrinked or something). Please take a
> look at the attached image, the font is Arial 10.

Strange. Did you rescale any of the images ?


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