Archive for October, 2012

Drawing in color in PyGTK

Monday, October 15th, 2012

I’ve been playing with drawing on your own widgets in PyGTK on Windows, and I found it incredibly difficult to figure out how to draw something in color on a gtk.gdk.Drawable object using draw_line, draw_rectangle, etc. You can’t just set the color using the semi-obvious mechanism:

    gc = widget.window.new_gc()

I think the reason it doesn’t work is because if the color isn’t in the device-specific colormap, then GTK will ignore whatever color you set without bothering to warn you that something is wrong. However, I’ve finally hit on something that works. In your expose event (or elsewhere), you can put in something like the following:

    def on_expose_event(self, widget, event):

        gc = widget.window.new_gc()
        colormap = self.gc.get_colormap()
        color = colormap.alloc_color('yellow')

        # whatever gtk.gdk.Drawable draw_* functions you call here
        # will use that color

Hope you find this useful!

Comments inadvertently disabled

Wednesday, October 10th, 2012

Apparently at some point my anti-spam plugin decided to stop working. No wonder I haven’t had any comments in a really long time…. should be working now!

Use GroupTagger to rapidly organize your audio files with Exaile 3.3.0 using the Grouping tag

Saturday, October 6th, 2012

Well, I haven’t blogged here in quite awhile, but it’s been a pretty busy year! One project I’ve been spending a fair amount of time on is Exaile, a cross platform music player for GTK+ (its free and works on Windows, Linux, and even OSX — though, the installation for OSX is rather tricky). I’ve been DJ’ing Lindy Hop dances for almost a year now, and I’ve been fixing up Exaile to be an awesome music player for DJing — adding a BPM counter, secondary output device support (sometimes called pre-listening), and other things that I’ve found to be useful.

One feature in particular I want to highlight is a plugin I’ve created called GroupTagger. This super-useful plugin is distributed with the latest stable version of Exaile. This plugin allows you to easily and rapidly organize your music using the ‘Grouping’ tag in your audio files. The best part about this is that the data is stored in your MP3/OGG/FLAC/whatever audio files, so you can use the data with your favorite audio player if it supports it (Winamp, iTunes, others already do). A lot of people already categorize their music using this tag, and this plugin can manage music that is already tagged this way. To illustrate how useful this is, here are some screenshots and a mini-tutorial.