[MacRuby-devel] Quartz 2D Graphics problem

Jim Getzen jim at getzen.name
Thu Oct 18 17:30:21 PDT 2012


Aside from MacRuby and a couple of sound frameworks, it just uses Cocoa, CoreGraphics, and QuartzCore.

Jim


On Oct 18, 2012, at 7:45 PM, Robert Carl Rice <rice.audio at pobox.com> wrote:

Hi Jim,

What frameworks do you included in your project?

Thanks,
Bob Rice

On Oct 18, 2012, at 8:22 AM, Jim Getzen <jim at getzen.name> wrote:

> A fairly recent project of mine makes the exact same context call in drawRect. I just ran it again without a problem. My MacRuby is one of the nightlies from 2-3 weeks ago.
> 
> Jim
> 
> 
> On Oct 18, 2012, at 12:30 AM, Robert Carl Rice <rice.audio at pobox.com> wrote:
> 
> Hi,
> 
> I went back to working on an old project that uses core graphics and I'm having problems getting it to run again.
> 
> The following code gives me an error with the graphics context:
> 
> 	def drawRect( rect )
> 		return unless @controller
> 		
> 		begin
> 			@context = NSGraphicsContext.currentContext.graphicsPort
> 		
> 			# Scale 15 min intervals to chart area
> 			@xscale = bounds.size.width / 25.0
> 			height = bounds.size.height
> 			@yscale = height / 2.0
> 			CGContextScaleCTM( @context, @xscale, @yscale )
> 			CGContextTranslateCTM( @context, 0.5, 0.5 ) # Indent from bounds
> 			
> 			# restore text size 
> 			CGContextSetTextMatrix( @context, CGAffineTransformMakeScale( 1 / @xscale, 1 / @yscale ))
> 			show_index( height )
> 			
> 			rescue => e
> 			ErrorLog.instance.rescue_error( e )
> 		end
> 	end
> 
> unrecognized runtime type `{CGContext=}'
> /Users/robertrice/Library/Developer/Xcode/DerivedData/MacDriverLog-ebberjlfoqoqdzenjgqkdbkehuoj/Build/Products/Debug/MacDriverLog.app/Contents/Main_Window.bundle/Contents/Resources/RemarksIndexView.rb:55:in `drawRect'
> /Users/robertrice/Library/Developer/Xcode/DerivedData/MacDriverLog-ebberjlfoqoqdzenjgqkdbkehuoj/Build/Products/Debug/MacDriverLog.app/Contents/Resources/rb_main.rb:69:in `<main>'
> 
> line 55 is the first line:
> @context = NSGraphicsContext.currentContext.graphicsPort
> 
> Has anything changed with regard to Quartz 2D drawing?
> 
> Thanks,
> Bob Rice
> 
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