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# This file is part of the Frescobaldi project, http://www.frescobaldi.org/
#
# Copyright (c) 2008, 2009, 2010 by Wilbert Berendsen
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License
# as published by the Free Software Foundation; either version 2
# of the License, or (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
# See http://www.gnu.org/licenses/ for more information.
from __future__ import unicode_literals
"""
Preview dialog for the Score Wizard (scorewiz/__init__.py).
In separate file to ease maintenance.
"""
import math
import ly, ly.dom
from frescobaldi_app.runlily import LilyPreviewDialog
from frescobaldi_app.scorewiz import config
class PreviewDialog(LilyPreviewDialog):
def __init__(self, scorewiz):
self.scorewiz = scorewiz
LilyPreviewDialog.__init__(self, scorewiz)
def loadSettings(self):
self.restoreDialogSize(config("preview"))
def saveSettings(self):
self.saveDialogSize(config("preview"))
def showPreview(self):
builder = self.scorewiz.builder()
builder.midi = False # not needed
doc = builder.document()
keysig = doc.findChild(ly.dom.KeySignature)
timesig = doc.findChild(ly.dom.TimeSignature)
partial = doc.findChild(ly.dom.Partial)
# create a list of durations for the example notes.
durs = []
if partial:
durs.append((partial.dur, partial.dots))
if timesig:
dur = int(math.log(int(timesig.beat), 2))
num = min(int(timesig.num)*2, 10)
else:
dur, num = 2, 4
durs += [(dur, 0)] * num
def addItems(stub, generator):
for dur, dots in durs:
node = next(generator)
node.append(ly.dom.Duration(dur, dots))
stub.append(node)
lyrics = lyricsGen(len(durs))
# iter over all the Assignments to add example notes etc.
for a in doc.findChildren(ly.dom.Assignment, 1):
stub = a[-1]
if isinstance(stub, ly.dom.LyricMode):
stub.append(next(lyrics))
elif isinstance(stub, ly.dom.Relative):
addItems(stub[-1], pitchGen(keysig))
elif isinstance(stub, ly.dom.ChordMode):
addItems(stub, chordGen(keysig))
elif isinstance(stub, ly.dom.FigureMode):
addItems(stub, figureGen())
elif isinstance(stub, ly.dom.DrumMode):
addItems(stub, drumGen())
LilyPreviewDialog.showPreview(self, builder.ly(doc))
# Generators for different kinds of example input
def pitchGen(startPitch):
note = startPitch.note
while True:
for n in (note, note, (note + 9 ) % 7, (note + 8) % 7,
note, (note + 11) % 7, note):
chord = ly.dom.Chord()
ly.dom.Pitch(-1, n, startPitch.alter, parent=chord)
yield chord
def chordGen(startPitch):
for n in pitchGen(startPitch):
yield n
for i in 1, 2, 3:
yield ly.dom.TextDur("\\skip")
def lyricsGen(length):
while True:
for i in "ha", "hi", "ho", "he", "hu":
result = [i]*length
result[0] = result[0].title()
yield ly.dom.Text(' '.join(result))
def figureGen():
while True:
for i in 5, 6, 3, 8, 7:
for s in "<{0}>".format(i), "\\skip", "\\skip":
yield ly.dom.TextDur(s)
def drumGen():
while True:
for s in "bd", "hh", "sn", "hh":
yield ly.dom.TextDur(s)
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