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example: Integrate HeaderBar into COSMIC example

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This commit is contained in:
Michael Aaron Murphy 2022-10-07 05:21:37 +02:00
parent b848931920
commit 5d201fb102
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1 changed files with 87 additions and 31 deletions
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118
examples/cosmic/src/main.rs
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@ -8,11 +8,13 @@ use cosmic::{
nav_bar,
nav_button,
toggler,
HeaderBar,
},
settings,
iced::{theme, Alignment, Color, Element, Length, Sandbox, Theme},
iced::{self, theme, Alignment, Application, Color, Command, Element, Length, Theme},
iced::widget::{
checkbox,
column,
container,
horizontal_space,
pick_list,
@ -24,17 +26,22 @@ use cosmic::{
scrollable,
},
iced_lazy::responsive,
iced_winit::window::drag,
WindowMsg
};
pub fn main() -> cosmic::iced::Result {
let mut settings = settings();
settings.window.min_size = Some((600, 300));
// TODO: Window resize handles not functioning yet
// settings.window.decorations = false;
Window::run(settings)
}
#[derive(Default)]
struct Window {
headerbar: HeaderBar,
page: u8,
debug: bool,
theme: Theme,
@ -42,6 +49,7 @@ struct Window {
checkbox_value: bool,
toggler_value: bool,
pick_list_selected: Option<&'static str>,
exit: bool,
}
#[derive(Clone, Copy, Debug)]
@ -54,23 +62,38 @@ enum Message {
CheckboxToggled(bool),
TogglerToggled(bool),
PickListSelected(&'static str),
Window(WindowMsg)
}
impl Sandbox for Window {
type Message = Message;
impl From<WindowMsg> for Message {
fn from(message: WindowMsg) -> Self {
Self::Window(message)
}
}
fn new() -> Self {
impl Application for Window {
type Executor = iced::executor::Default;
type Flags = ();
type Message = Message;
type Theme = Theme;
fn new(_flags: ()) -> (Self, Command<Self::Message>) {
let mut window = Window::default();
window.headerbar.title = String::from("COSMIC Design System - Iced");
window.headerbar.nav_title = String::from("WiFi Settings");
window.headerbar.sidebar_active = true;
window.headerbar.show_minimize = true;
window.headerbar.show_maximize = true;
window.slider_value = 50.0;
window.pick_list_selected = Some("Option 1");
window
(window, Command::none())
}
fn title(&self) -> String {
String::from("COSMIC Design System - Iced")
self.headerbar.title.clone()
}
fn update(&mut self, message: Message) {
fn update(&mut self, message: Message) -> iced::Command<Self::Message> {
match message {
Message::Page(page) => self.page = page,
Message::Debug(debug) => self.debug = debug,
@ -80,35 +103,54 @@ impl Sandbox for Window {
Message::CheckboxToggled(value) => self.checkbox_value = value,
Message::TogglerToggled(value) => self.toggler_value = value,
Message::PickListSelected(value) => self.pick_list_selected = Some(value),
Message::Window(msg) => match msg {
WindowMsg::Close => self.exit = true,
WindowMsg::ToggleSidebar => self.headerbar.sidebar_active = !self.headerbar.sidebar_active,
WindowMsg::Drag => return drag(),
WindowMsg::Minimize => {}
WindowMsg::Maximize => {}
}
}
iced::Command::none()
}
fn view(&self) -> Element<Message> {
let mut header = self.headerbar.render();
if self.debug {
header = header.explain(Color::WHITE);
}
// TODO: Adding responsive makes this regenerate on every size change, and regeneration
// involves allocations for many different items. Ideally, we could only make the nav bar
// responsive and leave the content to be sized normally.
responsive(|size| {
let content = responsive(|size| {
let condensed = size.width < 900.0;
let sidebar: Element<_> = nav_bar!(
//TODO: Support symbolic icons
nav_button!("network-wireless", "Wi-Fi", condensed)
.on_press(Message::Page(0))
.style(if self.page == 0 { theme::Button::Primary } else { theme::Button::Text })
,
nav_button!("preferences-desktop", "Desktop", condensed)
.on_press(Message::Page(1))
.style(if self.page == 1 { theme::Button::Primary } else { theme::Button::Text })
,
nav_button!("system-software-update", "OS Upgrade & Recovery", condensed)
.on_press(Message::Page(2))
.style(if self.page == 2 { theme::Button::Primary } else { theme::Button::Text })
)
.max_width(if condensed {
56
let sidebar: Option<Element<_>> = if self.headerbar.sidebar_active {
Some(nav_bar!(
//TODO: Support symbolic icons
nav_button!("network-wireless", "Wi-Fi", condensed)
.on_press(Message::Page(0))
.style(if self.page == 0 { theme::Button::Primary } else { theme::Button::Text })
,
nav_button!("preferences-desktop", "Desktop", condensed)
.on_press(Message::Page(1))
.style(if self.page == 1 { theme::Button::Primary } else { theme::Button::Text })
,
nav_button!("system-software-update", "OS Upgrade & Recovery", condensed)
.on_press(Message::Page(2))
.style(if self.page == 2 { theme::Button::Primary } else { theme::Button::Text })
)
.max_width(if condensed {
56
} else {
300
})
.into())
} else {
300
})
.into();
None
};
let choose_theme = [Theme::Light, Theme::Dark].iter().fold(
row![text("Debug theme:")].spacing(10).align_items(Alignment::Center),
@ -210,8 +252,13 @@ impl Sandbox for Window {
)
.into();
container(row![
if self.debug { sidebar.explain(Color::WHITE) } else { sidebar },
let mut widgets = Vec::with_capacity(2);
if let Some(sidebar) = sidebar {
widgets.push(if self.debug { sidebar.explain(Color::WHITE) } else { sidebar });
}
widgets.push(
scrollable(row![
horizontal_space(Length::Fill),
if self.debug { content.explain(Color::WHITE) } else { content },
@ -219,12 +266,21 @@ impl Sandbox for Window {
])
.scrollbar_width(12)
.scroller_width(6)
])
.into()
);
container(row(widgets))
.padding([16, 8])
.width(Length::Fill)
.height(Length::Fill)
.into()
}).into()
}).into();
column(vec![header, content]).into()
}
fn should_exit(&self) -> bool {
self.exit
}
fn theme(&self) -> Theme {