U++ forum: Welcome to the forum

Re: Painter small text quality [message #39756 is a reply to message #39752]

Tue, 23 April 2013 19:01

dolik.rce
Messages: 1789
Registered: August 2008
Location: Czech Republic

Ultimate Contributor

Hi Koldo,

Small fonts always look ugly when they're anti-aliased. I'd suggest to round the values for the painter variant as well, it can make a huge difference:
index.php?t=getfile&id=4147&private=0

This preview was generated using this code:

void TextTest(Painter& sw) {
	sw.DrawText(10,100, "Hello world! // DrawText()", Roman(12), Black());
	for(int i=0; i<=5; ++i)
		sw.Text(10+0.2*i, 120+i*20, Format("Hello world! // Text() shifted %2vf pixel left",i*0.2), Roman(12))
		  .Fill(Black());
	for(int i=0; i<=5; ++i)
		sw.Text(300, 120+i*20.2, Format("Hello world! // Text() shifted %2vf pixel down",i*0.2), Roman(12))
		  .Fill(Black());
}

Also, you're pictures seem like there are errors in the letter spacing. Not sure where that comes from, I couldn't reproduce it on my system... I think you can safely use DrawText() everywhere, or do some compromise, e.g.

void DrawText(Painter &w, double x, double y, int angle, const String &text, Font font, Color color) {
	if(font.GetHeight()>15) {
		w.Begin();
		w.Translate(x, y).Rotate(-angle*M_PI/1800.);
		w.Text(0, 0, text, font).Fill(color);
		w.End();
	} else
		w.DrawText(fround(x), fround(y), angle, text, font, color);
}

Best regards,
Honza

EDIT: Corrected image and code

Attachment: text.png
(Size: 24.82KB, Downloaded 568 times)

[Updated on: Tue, 23 April 2013 20:18]

Report message to a moderator