John Hunter wrote: > On Sat, May 9, 2009 at 9:32 AM, Freddie Witherden <fred...@witherden.org> > wrote: >> Hi all, >> >> As some of you probably know I am working on the GSoC project to >> externalise the Mathtex engine from Matplotlib. Today I have been >> toying around with the renderer using various backends. >> >> One of the interesting things that I discovered was that the Cairo >> backend was making use of subpixel rendering. (Or 'ClearType' as >> Microsoft call it.) This is not surprising -- by default Cairo will >> respect a users fontconfig settings when rendering text. Since I have >> subpixel rendering enabled all text rendered by Cairo is subpixel >> rendered. >> >> While this is fantastic for on screen text -- being significantly more >> pleasing to look at that the text produced by the AGG backend -- it is >> unsuitable for print. Now it is not too difficult to disable this, >> Cairo has an API call: cairo_font_options_set_antialias to deal with >> this. >> >> While I could write a quick patch to always disable subpixel rendering >> it would be something off a loss to those who either view their graphs >> onscreen or export them for the web -- where using subpixel rendering >> is now surprisingly common. >> >> Is it worth looking into adding subpixel rendering as a configuration >> option? > > The matplotlib.lines.Line2D objects has an antialiased property -- we > could add the same property to matplotlib.text.Text to turn on/off > subpixel rendering (which could also be supported as an rc param)
I haven't poked around, so this may be a stupid question, but: for cairo, can subpixel rendering simply be left on for screen display and automatically turned off when writing to a file via savefig? If this can be done, it seems like a better solution than requiring to the user to turn the parameter on and off manually, depending on whether show() or savefig() is being called. Eric > > JDH ------------------------------------------------------------------------------ The NEW KODAK i700 Series Scanners deliver under ANY circumstances! Your production scanning environment may not be a perfect world - but thanks to Kodak, there's a perfect scanner to get the job done! With the NEW KODAK i700 Series Scanner you'll get full speed at 300 dpi even with all image processing features enabled. http://p.sf.net/sfu/kodak-com _______________________________________________ Matplotlib-devel mailing list Matplotlib-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-devel
