slint/demos/home-automation/ui/components/general/themeSwitch.slint

// Copyright © SixtyFPS GmbH <info@slint.dev>
// SPDX-License-Identifier: MIT
import { Palette } from "../../common.slint";
import { Palette as StdPalette } from "std-widgets.slint";

global Utils {
    public pure function MapRange(value: length, inMin: length, inMax: length, outMin: length, outMax: length) -> length {
        return clamp(outMin, (value - inMin) * (outMax - outMin) / (inMax - inMin) + outMin, outMax);
    }
}

component SunMoonThumb {
    in property <float> scale: 1;
    in property <length> thumb-position: 50px;
    Rectangle {
        width: 200px * scale;
        height: 100px * scale;
        border-radius: self.height / 2;
        clip: true;
        Rectangle {
            width: 0px;
            height: 0px;
            x: root.thumb-position;
            Rectangle {
                width: 260px * scale;
                height: self.width;
                background: white;
                border-radius: self.width / 2;
                opacity: 0.05;
            }

            Rectangle {
                width: 200px * scale;
                height: self.width;
                background: white;
                border-radius: self.width / 2;
                opacity: 0.05;
            }

            Rectangle {
                x: 0;
                width: 140px * scale;
                height: self.width;
                background: white;
                border-radius: self.width / 2;
                opacity: 0.05;
            }

            clipper := Rectangle {
                width: 85px * scale;
                height: self.width;
                border-radius: self.width / 2;
                clip: true;

                sun := Rectangle {
                    width: 85px * scale;
                    height: self.width;
                    background: @radial-gradient(circle, #ffce08 0%, #fdd224 80%, #fce37f 100%);
                    border-radius: self.width / 2;
                }

                moon := Rectangle {
                    x: Utils.MapRange(root.thumb-position, 50px * scale, 100px * scale, 85px * scale, 0px);
                    width: 85px * scale;
                    height: self.width;
                    background: @radial-gradient(circle, #bcbcbc 0%, #e7e7e7 80%, #ffffff 100%);
                    border-radius: self.width / 2;
                }
            }
        }
    }
}

enum Theme { day, night }
export component ThemeSwitch {
    in property <float> scale: 1;
    width: 200px * scale;
    height: 100px * scale;

    property <Theme> theme: Theme.night;
    frameBacker := Rectangle {
        width: parent.width;
        height: parent.height;
        background: #1e2232;
        border-radius: self.height / 2;
    }

    Rectangle {
        width: parent.width;
        height: parent.height;
        clip: true;
        border-radius: self.height / 2;

        clouds-background := Image {
            x: 14px * scale;
            y: -6px * scale;
            width: 202px * scale;
            source: @image-url("../../images/clouds-background.png");
        }

        clouds-foreground := Image {
            x: 30px * scale;
            y: 5px * scale;
            width: 202px * scale;
            source: @image-url("../../images/clouds-front.png");
        }

        stars := Image {
            x: 15px * scale;
            y: 15px * scale;
            width: 80px * scale;
            source: @image-url("../../images/stars.png");
        }
    }

    Rectangle {
        border-radius: self.height / 2;
        border-color: #474747;
        border-width: 1phx;
    }

    thumb := SunMoonThumb {
        scale: root.scale;
    }

    TouchArea {
        clicked => {
            if root.theme == Theme.day {
                root.theme = Theme.night;
                Palette.dark-color-scheme = true;
                StdPalette.color-scheme = ColorScheme.dark;
            } else {
                root.theme = Theme.day;
                Palette.dark-color-scheme = false;
                StdPalette.color-scheme = ColorScheme.light;
            }
        }
    }

    states [
        nightMode when root.theme == Theme.night: {
            thumb.thumb-position: root.width - thumb.width - (50px * scale);
            frameBacker.background: #1e2232;
            clouds-background.y: 120px;
            clouds-foreground.y: 120px;
            in {
                animate frameBacker.background, stars.y, stars.opacity {
                    easing: ease-out-sine;
                    duration: 200ms;
                }
                animate thumb.thumb-position {
                    easing: cubic-bezier(0.61, 0.21, 0.68, 1.22);
                    duration: 300ms;
                }
                animate clouds-background.y, clouds-foreground.y {
                    easing: ease-in-sine;
                    duration: 150ms;
                }
            }
        }
        dayMode when root.theme == Theme.day: {
            thumb.thumb-position: 50px * scale;
            frameBacker.background: #3d85ba;
            stars.y: - 60px;
            stars.opacity: 0.4;
            in {
                animate frameBacker.background, stars.y, stars.opacity {
                    easing: ease-out-sine;
                    duration: 200ms;
                }
                animate thumb.thumb-position {
                    easing: cubic-bezier(0.61, 0.21, 0.68, 1.22);
                    duration: 300ms;
                }
                animate clouds-background.y {
                    easing: ease-out-sine;
                    duration: 300ms;
                }
                animate clouds-foreground.y {
                    easing: cubic-bezier(0.61, 0.21, 0.68, 1.22);
                    duration: 350ms;
                }
            }
        }
    ]
}