def show(self, obj, fmt, app=None, subformats=None, **keywords):
'''
show using the appropriate subformat.
'''
if subformats is None:
subformats = ['vexflow']
if subformats and subformats[0] == 'vexflow':
return self.vfshow(obj)
#subformats = ['lilypond','png']
if subformats:
helperFormat = subformats[0]
helperSubformats = subformats[1:]
else:
helperFormat = "musicxml"
helperSubformats = []
if not helperSubformats:
helperSubformats = ['png']
from music21 import converter
helperConverter = converter.Converter()
helperConverter.setSubconverterFromFormat(helperFormat)
helperSubConverter = helperConverter.subConverter
if helperFormat in ('musicxml', 'xml', 'lilypond', 'lily'):
### hack to make musescore excerpts -- fix with a converter class in MusicXML
savedDefaultTitle = defaults.title
savedDefaultAuthor = defaults.author
defaults.title = ''
defaults.author = ''
if 'Opus' not in obj.classes:
fp = helperSubConverter.write(obj,
helperFormat,
subformats=helperSubformats)
defaults.title = savedDefaultTitle
defaults.author = savedDefaultAuthor
if helperSubformats[0] == 'png':
from music21.ipython21 import objects as ipythonObjects
ipo = ipythonObjects.IPythonPNGObject(fp)
return ipo
else:
from IPython.display import Image, display # @UnresolvedImport
for s in obj.scores:
fp = helperSubConverter.write(s,
helperFormat,
subformats=helperSubformats)
if helperSubformats[0] == 'png':
from music21.ipython21 import objects as ipythonObjects # @Reimport
ipo = ipythonObjects.IPythonPNGObject(fp)
display(Image(filename=ipo.fp, retina=True))
defaults.title = savedDefaultTitle
defaults.author = savedDefaultAuthor
return None
elif helperFormat == 'midi':
import base64
from IPython.display import HTML, display # @UnresolvedImport @Reimport
fp = helperSubConverter.write(obj,
helperFormat,
subformats=helperSubformats)
with open(fp, 'rb') as f:
binaryMidiData = f.read()
binaryBase64 = base64.b64encode(binaryMidiData)
s = common.SingletonCounter()
outputId = "midiPlayerDiv" + str(s())
display(
HTML("""
<div id='""" + outputId + """'></div>
<link rel="stylesheet" href="http://artusi.xyz/music21j/css/m21.css"
type="text/css" />
<script>
require.config({
paths: {'music21': 'http://artusi.xyz/music21j/src/music21'}
});
require(['music21'], function() {
mp = new music21.miditools.MidiPlayer();
mp.addPlayer('#""" + outputId + """');
mp.base64Load('data:audio/midi;base64,""" +
binaryBase64.decode('utf-8') + """');
});
</script>"""))
if WEAKREF_ACTIVE and self.siteWeakref is not None:
siteIdValue = self.siteWeakref
try:
currentSite = GLOBAL_SITE_STATE_DICT[siteIdValue]
del GLOBAL_SITE_STATE_DICT[siteIdValue]
except KeyError:
currentSite = None
self.isDead = True
self.site = currentSite
_NoneSiteRef = SiteRef()
_NoneSiteRef.globalSiteIndex = -2 # -1 is used elsewhere...
_NoneSiteRef.siteIndex = -2
_singletonCounter = common.SingletonCounter()
class Sites(common.SlottedObjectMixin):
'''
An object, stored within a Music21Object, that stores (weak) references to
a collection of objects that may be contextually relevant to this object.
Most of these objects are locations (also called sites), or Streams that
contain this object.
All defined contexts are stored as dictionaries in a dictionary. The
outermost dictionary stores objects.
'''
### CLASS VARIABLES ###
def show(self, obj, fmt, app=None, subformats=None, **keywords): # pragma: no cover
'''
show using the appropriate subformat.
'''
if subformats is None:
subformats = ['vexflow']
if subformats and subformats[0] == 'vexflow':
return self.vfshow(obj)
#subformats = ['lilypond', 'png']
if subformats:
helperFormat = subformats[0]
helperSubformats = subformats[1:]
else:
helperFormat = "musicxml"
helperSubformats = []
if not helperSubformats:
helperSubformats = ['png']
from music21 import converter
helperConverter = converter.Converter()
helperConverter.setSubconverterFromFormat(helperFormat)
helperSubConverter = helperConverter.subConverter
from IPython.display import Image, display, HTML # @UnresolvedImport
if helperFormat in ('musicxml', 'xml', 'lilypond', 'lily'):
### hack to make musescore excerpts -- fix with a converter class in MusicXML
from music21.ipython21 import objects as ipythonObjects
savedDefaultTitle = defaults.title
savedDefaultAuthor = defaults.author
defaults.title = ''
defaults.author = ''
if 'Opus' not in obj.classes:
scores = [obj]
else:
scores = list(obj.scores)
for s in scores:
fp = helperSubConverter.write(s, helperFormat,
subformats=helperSubformats, **keywords)
if helperSubformats[0] == 'png':
if not str(environLocal['musescoreDirectPNGPath']).startswith('/skip'):
ipo = ipythonObjects.IPythonPNGObject(fp)
display(Image(data=ipo.getData(), retina=True))
else:
# smallest transparent pixel
pngData64 = (b'iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAAAAAA'
+ b'6fptVAAAACklEQVQYV2P4DwABAQEAWk1v8QAAAABJRU5ErkJggg==')
pngData = base64.b64decode(pngData64)
display(Image(data=pngData, retina=True))
defaults.title = savedDefaultTitle
defaults.author = savedDefaultAuthor
return None
elif helperFormat == 'midi':
fp = helperSubConverter.write(obj, helperFormat, subformats=helperSubformats)
with open(fp, 'rb') as f:
binaryMidiData = f.read()
binaryBase64 = base64.b64encode(binaryMidiData)
s = common.SingletonCounter()
outputId = "midiPlayerDiv" + str(s())
display(HTML("""
<div id='""" + outputId + """'></div>
<link rel="stylesheet" href="http://artusi.xyz/music21j/css/m21.css"
type="text/css" />
<script>
require.config({
paths: {'music21': 'http://artusi.xyz/music21j/src/music21'}
});
require(['music21'], function() {
mp = new music21.miditools.MidiPlayer();
mp.addPlayer('#""" + outputId + """');
mp.base64Load('data:audio/midi;base64,""" +
binaryBase64.decode('utf-8') + """');
});
</script>"""))
