utils.py

from tkinter import filedialog, Tk
import pygame

from Config import NOTE_NAMES

def clamp(v, lo, hi):
    return max(lo, min(v, hi))

def is_black(note):
    return NOTE_NAMES[note % 12].endswith('#')

def open_midi_file(initial_dir="."):
    root = Tk()
    root.withdraw()
    filename = filedialog.askopenfilename(
        initialdir=initial_dir,
        title="Import MIDI file",
        filetypes=[("MIDI files", "*.mid *.midi")]
    )
    root.destroy()
    return filename

def save_midi_file():
    root = Tk()
    root.withdraw()

    filename = filedialog.asksaveasfilename(
        title="Export MIDI file",
        defaultextension=".mid",
        filetypes=[("MIDI files", "*.mid *.midi")]
    )

    root.destroy()
    return filename

def open_sf2_file(initial_dir="."):
    root = Tk()
    root.withdraw()
    path = filedialog.askopenfilename(
        initialdir=initial_dir,
        title="Select SoundFont",
        filetypes=(("SoundFont files", "*.sf2"), ("all files", "*.*"))
    )
    root.destroy()
    return path
def load_icon(filename):
    try:
        icon = pygame.image.load(filename).convert_alpha()
        return pygame.transform.scale(icon, (24, 24))
    except:
        return pygame.Surface((24, 24), pygame.SRCALPHA)




def get_note_name(midi_val, current_key="C Major"):
    # Standard note names
    sharps = ['C', 'C#', 'D', 'D#', 'E', 'F', 'F#', 'G', 'G#', 'A', 'A#', 'B']
    flats = ['C', 'Db', 'D', 'Eb', 'E', 'F', 'Gb', 'G', 'Ab', 'A', 'Bb', 'B']

    # Decide whether to use sharps or flats based on the key
    # Simple rule: Keys like F, Bb, Eb, Ab, Db, Gb Major usually use flats
    flat_keys = ["F Major", "Bb Major", "Eb Major", "Ab Major", "Db Major", "Gb Major",
                 "D Minor", "G Minor", "C Minor", "F Minor", "Bb Minor", "Eb Minor"]

    note_list = flats if current_key in flat_keys else sharps

    name = note_list[midi_val % 12]
    octave = (midi_val // 12) - 1
    return f"{name}{octave}"
def rgb_to_hex(rgb):
    """Converts (R, G, B) tuple to uppercase #RRGGBB string."""
    return '#{:02x}{:02x}{:02x}'.format(rgb[0], rgb[1], rgb[2]).upper()