Macro layout 

macro_rules! layout {
    ($title:expr, $subtitle:expr, $knob_size:expr, { $($body:tt)* }) => { ... };
}

Declarative layout DSL for plugin GUIs.

Example

use truce_gui_types::layout;

fn gui_layout() -> truce_gui_types::layout::PluginLayout {
    layout!("MY PLUGIN", "V1.0", 50.0, {
        row {
            knob(ID_GAIN, "Gain")
            slider(ID_PAN, "Pan")
            toggle(ID_BYPASS, "Bypass")
            meter(&[METER_L, METER_R], "Level")
        }
        section("FILTER") {
            knob(ID_CUTOFF, "Cutoff")
            knob(ID_RESO, "Reso")
        }
    })
}