khodowany
63 lines
3.0 KiB
Python
63 lines
3.0 KiB
Python
from __future__ import annotations
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import generator.engraving.types
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import generator.model
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def column(index, event, anchors, fonts, style):
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if not index.staff.get('tablature') or not anchors:
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return []
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x = min(a.x for a in anchors)
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sources = (event.value['id'],)
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if not event.value['pitches']:
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anchor = anchors[0]
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return [fonts.glyph('noteheadSlashHorizontalEnds', x, -2 * style.tab_space, style.space, 'tab_slash', sources)] if anchor.fragment.kind == 'slash' else []
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result = []
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for anchor in anchors:
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tone = index.tones[anchor.source][1]
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tab = tone['tablature']
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y = -(6 - tab['string']) * style.tab_space
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result.append(fonts.text(str(tab['fret']), x, y + 4, style.tab_font_size, 'tab', (event.value['id'], tone['id'])))
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return result
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def staff(index, items, start, end, left, right, fonts, style):
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notation = [p for p in items if not p.role.startswith('tab')]
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numbers = [p for p in items if p.role.startswith('tab')]
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if not index.staff.get('tablature'):
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return items
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offset = generator.engraving.types.bounds(notation).bottom + style.tab_gap + 5 * style.tab_space
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numbers = [p.moved(0, offset) for p in numbers]
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drawing = list(numbers)
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drawing.append(fonts.text('TAB', 0, offset - 2 * style.tab_space, style.tab_font_size, 'tab_label', ()))
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for string in range(1, 7):
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y = offset - (6 - string) * style.tab_space
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cuts = sorted((max(0, p.box.left - 2), min(right, p.box.right + 2)) for p in numbers if p.box.top <= y <= p.box.bottom)
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cursor = 0
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for a, b in cuts + [(right, right)]:
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if a > cursor:
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drawing.append(generator.engraving.types.line('tab_staff', (), ((cursor, y), (a, y)), style.space * 0.13))
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cursor = max(cursor, b)
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for bar in (p for p in notation if p.role == 'barline'):
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drawing.append(generator.engraving.types.line('tab_barline', bar.sources, tuple((x, offset + y * 5 * style.tab_space / (4 * style.space)) for x, y in bar.points), bar.thickness))
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by_source = {source: p for p in numbers if p.role == 'tab' for source in p.sources[1:]}
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def tie(identifier, tone, x1, x2):
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y = offset - (6 - tone['tablature']['string']) * style.tab_space + 6
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if x2 > x1:
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drawing.append(generator.engraving.types.curve('tab_tie', (identifier,), ((x1, y), (x1 + (x2 - x1) / 3, y + 5), (x2 - (x2 - x1) / 3, y + 5), (x2, y))))
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for identifier, (event, tone) in index.tones.items():
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first = by_source.get(identifier)
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finish = event.start + generator.model.fraction(tone['duration'])
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if first and event.start < start < finish:
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tie(identifier, tone, left, first.box.left - 2)
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if first and finish > end:
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tie(identifier, tone, first.box.right + 2, right)
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elif target := tone.get('tie_to'):
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destination = index.tones[target][0].start
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if event.start >= end or destination < start:
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continue
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last = by_source.get(target)
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if first or last:
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tie(identifier, tone, first.box.right + 2 if first else left, last.box.left - 2 if last else right)
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return notation + drawing
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