display code

app.py

@@ -5,13 +5,45 @@ from fortepyan import MidiPiece
 piece = MidiPiece.from_file("haydn.mid")
 
 st.write("## Display a PianoRoll player")
+
+code = """
+import streamlit_pianoroll
+from fortepyan import MidiPiece
+
+piece = MidiPiece.from_file("haydn.mid")
+streamlit_pianoroll.from_fortepyan(piece)
+"""
+st.code(code, language="python")
 streamlit_pianoroll.from_fortepyan(piece)
 
 st.write("## Conditional coloring")
-st.write("Absolute pitch value condition")
+st.write("#### Absolute pitch value condition")
+
+code = """
+df = piece.df
+ids = df.pitch > pitch_threshold
+
+part_a = df[ids]
+part_b = df[~ids]
+piece_a = MidiPiece(df=part_a)
+piece_b = MidiPiece(df=part_b)
+
+streamlit_pianoroll.from_fortepyan(
+    piece=piece_a,
+    secondary_piece=piece_b,
+)
+"""
+st.code(code, language="python")
+
 df = piece.df.copy()
 
-ids = df.pitch > 60
+pitch_threshold = st.number_input(
+    label="pitch_threshold",
+    min_value=df.pitch.min(),
+    max_value=df.pitch.max(),
+    value=60,
+)
+ids = df.pitch > pitch_threshold
 
 part_a = df[ids]
 part_b = df[~ids]
@@ -23,11 +55,35 @@ streamlit_pianoroll.from_fortepyan(
     secondary_piece=piece_b,
 )
 
-st.write("Note duration condition")
+st.write("#### Note duration condition")
+
+code = """
+df = piece.df
+
+ids = df.duration > duration_threshold
+
+part_a = df[ids]
+part_b = df[~ids]
+piece_a = MidiPiece(df=part_a)
+piece_b = MidiPiece(df=part_b)
+
+streamlit_pianoroll.from_fortepyan(
+    piece=piece_a,
+    secondary_piece=piece_b,
+)
+"""
+st.code(code, language="python")
 
 df = piece.df.copy()
 
-ids = df.duration > 0.23
+duration_threshold = st.number_input(
+    label="duration threshold",
+    min_value=0.05,
+    max_value=5.,
+    value=0.25,
+)
+
+ids = df.duration > duration_threshold
 
 part_a = df[ids]
 part_b = df[~ids]