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Line 17: − # Insert here code relevant to Sugar 0.84 and higher+ − # I use this to only display Object Chooser callback buttons only for >= 0.84+ − # Clicking one of the displayed buttons calls the choose method+ − chooser = ObjectChooser(parent=self, what_filter=mime.GENERIC_TYPE_AUDIO)+ − result = chooser.run()+ − if result == gtk.RESPONSE_ACCEPT:+ − self.jobject = chooser.get_selected_object()+ − if self.jobject is not None:+ − self.path = str(self.jobject.get_file_path())+ − :1. I exclude Sugar 0.82 for two reasons (which means, unfortunately, "no user soundfiles for 0.82"):+ − ::(a) its version of Object Chooser does not allow filtering for the audio mime type;+ − ::(b) Sugar 0.82's Csound (5.08) - or more specifically its version of libsndfile - does not handle ogg vorbis soundfiles, the type that the Record activity creates. Record is the most likely/accessible means that children would use to create their own soundfiles. (The whole idea behind using Object Chooser here is to select user files that have been placed in the Journal [as Record does by default] for performance in FileMix.)+ − ::(c) In addition, earlier versions of Record (<v64 or so) create ogg SPEEX soundfiles; even the recent versions of Csound (actually, libsndfile) do not handle this (lo-fi) format.+ + + + − + − :2. self.path stores the soundfile name (complete path); self.jobject stores the object itself. This is key to being able (in Csound) to locate and load the selected soundfile. self.path is then a channel opened to send the named soundfile to Csound. − − :3. If the user closes the Object Chooser box instead of clicking on a sound object, the result is not accepted, and self.path reverts to "0" - which is a flag (in Csound) to revert to the default soundfile included in FileMix. − − :4. The str() cast for self.jname1 converts the filename to the usual path format readable by Csound (this too is required). It is dbus string object... maybe we need to this type cast in sugar-toolkit code (though in most cases this casting should happen implicitly). − −
Activity Team/Object Chooser (view source)
Revision as of 11:40, 22 December 2010
, 11:40, 22 December 2010no edit summary
if version >= [0, 84]:
if version >= [0, 84]:
# Insert here code relevant to Sugar 0.84 and higher
# I use this to only display Object Chooser callback buttons only for >= 0.84
# Clicking one of the displayed buttons calls the choose method
def choose(self, widget):
def choose(self, widget):
chooser = ObjectChooser(parent=self, what_filter=mime.GENERIC_TYPE_AUDIO)
result = chooser.run()
if result == gtk.RESPONSE_ACCEPT:
self.jobject = chooser.get_selected_object()
if self.jobject is not None:
self.path = str(self.jobject.get_file_path())
=== Random observations: ===
=== Random observations: ===
# I exclude Sugar 0.82 for two reasons (which means, unfortunately, "no user soundfiles for 0.82"):
#* its version of Object Chooser does not allow filtering for the audio mime type;
#* Sugar 0.82's Csound (5.08) - or more specifically its version of libsndfile - does not handle ogg vorbis soundfiles, the type that the Record activity creates. Record is the most likely/accessible means that children would use to create their own soundfiles. (The whole idea behind using Object Chooser here is to select user files that have been placed in the Journal [as Record does by default] for performance in FileMix.)
#* In addition, earlier versions of Record (<v64 or so) create ogg SPEEX soundfiles; even the recent versions of Csound (actually, libsndfile) do not handle this (lo-fi) format.
# self.path stores the soundfile name (complete path); self.jobject stores the object itself. This is key to being able (in Csound) to locate and load the selected soundfile. self.path is then a channel opened to send the named soundfile to Csound.
# If the user closes the Object Chooser box instead of clicking on a sound object, the result is not accepted, and self.path reverts to "0" - which is a flag (in Csound) to revert to the default soundfile included in FileMix.
# The str() cast for self.jname1 converts the filename to the usual path format readable by Csound (this too is required). It is dbus string object... maybe we need to this type cast in sugar-toolkit code (though in most cases this casting should happen implicitly).
''Art Hunkins and Aleksey Lim''
''Art Hunkins and Aleksy Lim''