use gpui::{prelude::*, Rgba, WindowAppearance}; use ui::prelude::*; #[derive(IntoElement)]pub struct WindowsWindowControls {    button_height: Pixels,} impl WindowsWindowControls {    pub fn new(button_height: Pixels) -> Self {        Self { button_height }    }     #[cfg(not(target_os = "windows"))]    fn get_font() -> &'static str {        "Segoe Fluent Icons"    }     #[cfg(target_os = "windows")]    fn get_font() -> &'static str {        use windows::Wdk::System::SystemServices::RtlGetVersion;         let mut version = unsafe { std::mem::zeroed() };        let status = unsafe { RtlGetVersion(&mut version) };         if status.is_ok() && version.dwBuildNumber >= 22000 {            "Segoe Fluent Icons"        } else {            "Segoe MDL2 Assets"        }    }} impl RenderOnce for WindowsWindowControls {    fn render(self, window: &mut Window, _: &mut App) -> impl IntoElement {        let close_button_hover_color = Rgba {            r: 232.0 / 255.0,            g: 17.0 / 255.0,            b: 32.0 / 255.0,            a: 1.0,        };         let button_hover_color = match window.appearance() {            WindowAppearance::Light | WindowAppearance::VibrantLight => Rgba {                r: 0.1,                g: 0.1,                b: 0.1,                a: 0.2,            },            WindowAppearance::Dark | WindowAppearance::VibrantDark => Rgba {                r: 0.9,                g: 0.9,                b: 0.9,                a: 0.1,            },        };         div()            .id("windows-window-controls")            .font_family(Self::get_font())            .flex()            .flex_row()            .justify_center()            .content_stretch()            .max_h(self.button_height)            .min_h(self.button_height)            .child(WindowsCaptionButton::new(                "minimize",                WindowsCaptionButtonIcon::Minimize,                button_hover_color,            ))            .child(WindowsCaptionButton::new(                "maximize-or-restore",                if window.is_maximized() {                    WindowsCaptionButtonIcon::Restore                } else {                    WindowsCaptionButtonIcon::Maximize                },                button_hover_color,            ))            .child(WindowsCaptionButton::new(                "close",                WindowsCaptionButtonIcon::Close,                close_button_hover_color,            ))    }} #[derive(Debug, PartialEq, Eq, PartialOrd, Ord, Hash, Clone, Copy)]enum WindowsCaptionButtonIcon {    Minimize,    Restore,    Maximize,    Close,} #[derive(IntoElement)]struct WindowsCaptionButton {    id: ElementId,    icon: WindowsCaptionButtonIcon,    hover_background_color: Rgba,} impl WindowsCaptionButton {    pub fn new(        id: impl Into<ElementId>,        icon: WindowsCaptionButtonIcon,        hover_background_color: Rgba,    ) -> Self {        Self {            id: id.into(),            icon,            hover_background_color,        }    }} impl RenderOnce for WindowsCaptionButton {    fn render(self, _window: &mut Window, _cx: &mut App) -> impl IntoElement {        // todo(windows) report this width to the Windows platform API        // NOTE: this is intentionally hard coded. An option to use the 'native' size        //       could be added when the width is reported to the Windows platform API        //       as this could change between future Windows versions.        let width = px(36.);         h_flex()            .id(self.id)            .justify_center()            .content_center()            .w(width)            .h_full()            .text_size(px(10.0))            .hover(|style| style.bg(self.hover_background_color))            .active(|style| {                let mut active_color = self.hover_background_color;                active_color.a *= 0.2;                 style.bg(active_color)            })            .child(match self.icon {                WindowsCaptionButtonIcon::Minimize => "\u{e921}",                WindowsCaptionButtonIcon::Restore => "\u{e923}",                WindowsCaptionButtonIcon::Maximize => "\u{e922}",                WindowsCaptionButtonIcon::Close => "\u{e8bb}",            })    }}