slint/internal/compiler/widgets/common/spinbox-base.slint

// Copyright © SixtyFPS GmbH <info@slint.dev>
// SPDX-License-Identifier: GPL-3.0-only OR LicenseRef-Slint-Royalty-free-1.1 OR LicenseRef-Slint-commercial


export component SpinBoxBase {
    in property <int> minimum;
    in property <int> maximum: 100;
    in property <bool> enabled;
    in-out property <int> value;

    callback edited(/* value */ int);
    callback update-text(/* text */ string);

    public function update-value(value: int) {
        if (value < root.minimum || value > root.maximum) {
            return;
        }

        root.value = value;
        root.edited(value);
    }

    public function increment() {
        root.update-value(root.value + 1);
    }

    public function decrement() {
        root.update-value(root.value - 1);
    }

    private property <length> scroll-delta: 2px;

    TouchArea {
        enabled: root.enabled;

        scroll-event(event) => {
            if (event.delta-y < 0) {
                root.increment();
                return accept;
            }

            if (event.delta-y > 0) {
                root.decrement();
                return accept;
            }

            return reject;
        }
    }
}