Activity Team/Object Chooser - Revision history

FGrose: indent 4 spaces (PEP8)

2010-12-28T00:55:15Z

indent 4 spaces (PEP8)

← Older revision		Revision as of 20:55, 27 December 2010
Line 25:		Line 25:
	result = chooser.run()		result = chooser.run()
	if result == gtk.RESPONSE_ACCEPT:		if result == gtk.RESPONSE_ACCEPT:
	self.jobject = chooser.get_selected_object()		self.jobject = chooser.get_selected_object()
	self.path = str(self.jobject.get_file_path())		self.path = str(self.jobject.get_file_path())
	else:		else:
	self.jobject = None		self.jobject = None
	self.path = "0"		self.path = "0"

	=== Random observations: ===		=== Random observations: ===

Abhunkin: /* The Sugar Object Chooser */

2010-12-27T22:11:11Z

The Sugar Object Chooser

← Older revision		Revision as of 18:11, 27 December 2010
Line 22:		Line 22:

	def choose(self, widget):		def choose(self, widget):
	chooser = ObjectChooser(parent=self, what_filter=mime.GENERIC_TYPE_AUDIO)		chooser = ObjectChooser(parent=self, what_filter=mime.GENERIC_TYPE_AUDIO)
	result = chooser.run()		result = chooser.run()
	if result == gtk.RESPONSE_ACCEPT:		if result == gtk.RESPONSE_ACCEPT:
	self.jobject = chooser.get_selected_object()		self.jobject = chooser.get_selected_object()
	self.path = str(self.jobject.get_file_path())		self.path = str(self.jobject.get_file_path())
	else:		else:
	self.jobject = None		self.jobject = None
	self.~~path1~~ = "0"		self.path = "0"

	=== Random observations: ===		=== Random observations: ===
Line 35:		Line 35:
	# I exclude Sugar 0.82 for two reasons (which means, unfortunately, "no user soundfiles for 0.82"):		# 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;		#* 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.)		#* 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 (later versions) 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.		#* In addition, '''earlier''' versions of Record (<v76, except for v61-64) create ogg '''speex''' soundfiles; even the recent versions of Csound (actually, libsndfile) do not handle this (lo-fi) format. (Unfortunately, ''no'' versions of Record [as of 12/10] produce any audio, ''except'' ogg speex, in Sugar > 0.84.)
	# 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.		# 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.		# 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.path 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).		# The str() cast for self.path converts the filename to the usual path format readable by Csound (this too is required). Otherwise, the file_path is a dbus string object; maybe we need to cast this type in sugar-toolkit code (though in most cases this casting should happen implicitly).

			The above code is included in FileMix-4.xo, in filemix.py (where there are 4 Object Chooser methods triggered by 4 callback buttons). Source for this activity has been made visible online.

	''Art Hunkins and Aleksey Lim''		''Art Hunkins and Aleksey Lim''

Walter: /* The Sugar Object Chooser */

2010-12-27T20:27:34Z

The Sugar Object Chooser

← Older revision		Revision as of 16:27, 27 December 2010
Line 21:		Line 21:
	# Clicking one of the displayed buttons calls the choose method		# 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)
	chooser = ObjectChooser(parent=self, what_filter=mime.GENERIC_TYPE_AUDIO)		result = chooser.run()
	result = chooser.run()		if result == gtk.RESPONSE_ACCEPT:
	if result == gtk.RESPONSE_ACCEPT:		self.jobject = chooser.get_selected_object()
	self.jobject = chooser.get_selected_object()		self.path = str(self.jobject.get_file_path())
	self.path = str(self.jobject.get_file_path())		else:
	else:		self.jobject = None
	self.jobject = None		self.path1 = "0"
	self.path1 = "0"

	=== Random observations: ===		=== Random observations: ===

Walter: /* The Sugar Object Chooser */

2010-12-27T20:26:49Z

The Sugar Object Chooser

← Older revision		Revision as of 16:26, 27 December 2010
Line 21:		Line 21:
	# Clicking one of the displayed buttons calls the choose method		# 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()		chooser = ObjectChooser(parent=self, what_filter=mime.GENERIC_TYPE_AUDIO)
	if result == gtk.RESPONSE_ACCEPT:		result = chooser.run()
	self.jobject = chooser.get_selected_object()		if result == gtk.RESPONSE_ACCEPT:
	~~if self.jobject is not None:~~		self.jobject = chooser.get_selected_object()
	self.path = str(self.jobject.get_file_path())		self.path = str(self.jobject.get_file_path())
			else:
			self.jobject = None
			self.path1 = "0"

	=== Random observations: ===		=== Random observations: ===
Line 37:		Line 40:
	# 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.		# 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.		# 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).		# The str() cast for self.path 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 Aleksey Lim''

FGrose at 16:40, 22 December 2010

2010-12-22T16:40:57Z

← Older revision		Revision as of 12:40, 22 December 2010
Line 17:		Line 17:

	if version >= [0, 84]:		if version >= [0, 84]:
	# Insert here code relevant to Sugar 0.84 and higher		# Insert here code relevant to Sugar 0.84 and higher
	# I use this to only display Object Chooser callback buttons only for >= 0.84		# I use this to only display Object Chooser callback buttons only for >= 0.84
	# Clicking one of the displayed buttons calls the choose method		# 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)		chooser = ObjectChooser(parent=self, what_filter=mime.GENERIC_TYPE_AUDIO)
	result = chooser.run()		result = chooser.run()
	if result == gtk.RESPONSE_ACCEPT:		if result == gtk.RESPONSE_ACCEPT:
	self.jobject = chooser.get_selected_object()		self.jobject = chooser.get_selected_object()
	if self.jobject is not None:		if self.jobject is not None:
	self.path = str(self.jobject.get_file_path())		self.path = str(self.jobject.get_file_path())

	=== Random observations: ===		=== Random observations: ===

	~~:1.~~ I exclude Sugar 0.82 for two reasons (which means, unfortunately, "no user soundfiles for 0.82"):		# 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;		#* 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.)		#* 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.		#* 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''
	: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).

	''Art Hunkins and ~~Aleksy~~ Lim''

Walter: /* The Sugar Object Chooser */

2010-12-22T14:59:35Z

The Sugar Object Chooser

← Older revision		Revision as of 10:59, 22 December 2010
Line 6:		Line 6:
	from sugar import mime		from sugar import mime

	self.path = ""		self.path = "0"
	self.jobject = None		self.jobject = None

Line 15:		Line 15:
	except ImportError:		except ImportError:
	version = [0, 82]		version = [0, 82]

	if version >= [0, 84]:		if version >= [0, 84]:
	# Insert here code relevant to Sugar 0.84 and higher		# Insert here code relevant to Sugar 0.84 and higher
	# I use this to only display Object Chooser callback buttons only for >= 0.84		# I use this to only display Object Chooser callback buttons only for >= 0.84
	# Clicking one of the displayed buttons calls the ~~choose1~~ method		# Clicking one of the displayed buttons calls the choose method

	def ~~choose1~~(self, widget):		def choose(self, widget):
	chooser = ObjectChooser(parent=self, what_filter=mime.GENERIC_TYPE_AUDIO)		chooser = ObjectChooser(parent=self, what_filter=mime.GENERIC_TYPE_AUDIO)
	result = chooser.run()		result = chooser.run()

Walter: /* Random observations: */

2010-12-22T14:58:41Z

Random observations:

← Older revision		Revision as of 10:58, 22 December 2010
Line 35:		Line 35:
	::(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.		::(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. jname1 stores the soundfile name (complete path); jobject1 stores the object itself. This is key to being able (in Csound) to locate and load the selected soundfile. jname1 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 ~~jname1~~ reverts to "0" - which is a flag (in Csound) to revert to the default soundfile included in FileMix.		: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).		: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).

	''Art Hunkins and Aleksy Lim''		''Art Hunkins and Aleksy Lim''

Walter: /* The Sugar Object Chooser */

2010-12-22T13:57:11Z

The Sugar Object Chooser

← Older revision		Revision as of 09:57, 22 December 2010
Line 6:		Line 6:
	from sugar import mime		from sugar import mime

	self.path = ''		self.path = ""
	self.jobject = None		self.jobject = None

Walter: Created page with "== The Sugar Object Chooser == The following example is modified from the FileMix activity. Note that it invokes the Chooser to select objects of mime type GENERIC_TYPE_AUDIO. ..."

2010-12-22T13:56:23Z

Created page with "== The Sugar Object Chooser == The following example is modified from the FileMix activity. Note that it invokes the Chooser to select objects of mime type GENERIC_TYPE_AUDIO. ..."

New page

== The Sugar Object Chooser ==

The following example is modified from the FileMix activity. Note that it invokes the Chooser to select objects of mime type GENERIC_TYPE_AUDIO.

from sugar.graphics.objectchooser import ObjectChooser
from sugar import mime

self.path = ''
self.jobject = None

# Determine which version of Sugar you are running
try:
from jarabe import config
version = [int(i) for i in config.version.split('.')][:2]
except ImportError:
version = [0, 82]
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 choose1 method

def choose1(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: ===

: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. jname1 stores the soundfile name (complete path); jobject1 stores the object itself. This is key to being able (in Csound) to locate and load the selected soundfile. jname1 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 jname1 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).

''Art Hunkins and Aleksy Lim''