Struct piano_keyboard::KeyboardBuilder

pub struct KeyboardBuilder { /* fields omitted */ }

The central builder to create a keyboard.

Methods

impl KeyboardBuilder

pub fn new() -> KeyboardBuilder

pub fn standard_piano(self, nr_of_keys: u8) -> Result<KeyboardBuilder, String>

Define a standard piano with 25/37/49/61/64/73/76 or 88 keys.

pub fn is_rd64(self) -> KeyboardBuilder

pub fn set_most_left_right_white_keys(
    self,
    left_white_key: u8,
    right_white_key: u8
) -> Result<KeyboardBuilder, String>

The keys are defined by MIDI key codes. This means the values have to be in range 0..128, with 0 representing C_-1. Thus the default 88 keyboard uses key codes 21 (A_0) to 108 (C_8).

pub fn set_width(self, width: u16) -> Result<KeyboardBuilder, String>

Sets the desired keyboard width in pixels.

pub fn white_black_gap_present(self, gap_present: bool) -> KeyboardBuilder

pub fn build2d(self) -> Keyboard2d

Final build the keyboard, which means to perform all calculations and create all the elements.