Help for drawing text with Quartz

Member

Posts: 53
Joined: 2007.08

Post: #1

Oct 21, 2007 — 05:57 PM

I don't see whats wrong with my code. Must be something really dumb I'm missing. I'm trying to draw text with Quartz from the drawRect method of a subclassed NSOpenGLView.

Code:

CGContextRef myContext = [[NSGraphicsContext currentContext] graphicsPort];

    CGContextSelectFont (myContext, "Times", 14, kCGEncodingMacRoman);

    CGContextSetTextDrawingMode (myContext, kCGTextFillStroke);

    CGContextSetRGBFillColor (myContext, 0, 1, 0, 1);

    CGContextSetRGBStrokeColor (myContext, 0, 1, 0, 1);

    CGContextSetTextPosition (myContext, 50.0, 50.0);

    CGContextShowText (myContext, "New Game", 8);

When drawRect is called all the rest of my drawing displays fine but the text doesn't show up at all. Does it matter that I'm using OpenGL?

OneSadCookie

Luminary

Posts: 5,131
Joined: 2002.04

Post: #2

Oct 21, 2007 — 06:52 PM

Any OpenGL drawing will obscure any Quartz drawing. There are ways around it, but easiest is to use a CGBitmapContext or NSView to create an OpenGL texture. http://onesadcookie.com/svn/repos/NSViewTexture shows how to do the latter.

Terrydil

Member

Posts: 53
Joined: 2007.08

Post: #3

Oct 21, 2007 — 06:59 PM

Thanks a bunch

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