148 lines
4.3 KiB
Rust
148 lines
4.3 KiB
Rust
// Copyright 2022 System76 <info@system76.com>
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// SPDX-License-Identifier: MPL-2.0
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use crate::{theme, Element};
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use apply::Apply;
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use derive_setters::Setters;
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use iced::{self, widget, Length};
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use std::borrow::Cow;
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#[must_use]
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pub fn header_bar<'a, Message>() -> HeaderBar<'a, Message> {
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HeaderBar {
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title: "".into(),
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on_close: None,
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on_drag: None,
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on_maximize: None,
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on_minimize: None,
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start: None,
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center: None,
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end: None,
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}
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}
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#[derive(Setters)]
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pub struct HeaderBar<'a, Message> {
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#[setters(into)]
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title: Cow<'a, str>,
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#[setters(strip_option)]
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on_close: Option<Message>,
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#[setters(strip_option)]
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on_drag: Option<Message>,
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#[setters(strip_option)]
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on_maximize: Option<Message>,
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#[setters(strip_option)]
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on_minimize: Option<Message>,
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#[setters(strip_option)]
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start: Option<Element<'a, Message>>,
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#[setters(strip_option)]
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center: Option<Element<'a, Message>>,
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#[setters(strip_option)]
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end: Option<Element<'a, Message>>,
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}
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impl<'a, Message: Clone + 'static> HeaderBar<'a, Message> {
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/// Converts the headerbar builder into an Iced element.
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pub fn into_element(mut self) -> Element<'a, Message> {
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let mut packed: Vec<Element<Message>> = Vec::with_capacity(4);
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if let Some(start) = self.start.take() {
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packed.push(
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widget::container(start)
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.align_x(iced::alignment::Horizontal::Left)
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.into(),
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);
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}
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packed.push(if let Some(center) = self.center.take() {
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widget::container(center)
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.align_x(iced::alignment::Horizontal::Center)
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.into()
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} else if self.title.is_empty() {
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widget::horizontal_space(Length::Fill).into()
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} else {
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self.title_widget()
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});
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packed.push(if let Some(end) = self.end.take() {
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widget::row(vec![end, self.window_controls()])
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.apply(widget::container)
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.align_x(iced::alignment::Horizontal::Right)
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.into()
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} else {
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self.window_controls()
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});
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let mut widget = widget::row(packed)
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.height(Length::Units(50))
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.padding(8)
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.spacing(8)
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.apply(widget::container)
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.center_y()
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.apply(widget::mouse_listener);
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if let Some(message) = self.on_drag.clone() {
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widget = widget.on_press(message);
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}
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if let Some(message) = self.on_maximize.clone() {
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widget = widget.on_release(message);
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}
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widget.into()
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}
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fn title_widget(&mut self) -> Element<'a, Message> {
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let mut title = Cow::default();
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std::mem::swap(&mut title, &mut self.title);
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super::text(title)
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.size(18)
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.font(crate::font::FONT_SEMIBOLD)
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.apply(widget::container)
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.center_x()
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.center_y()
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.width(Length::Fill)
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.height(Length::Fill)
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.into()
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}
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/// Creates the widget for window controls.
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fn window_controls(&mut self) -> Element<'a, Message> {
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let mut widgets: Vec<Element<_>> = Vec::with_capacity(3);
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let icon = |name, size, on_press| {
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super::icon(name, size)
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.force_svg(true)
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.style(crate::theme::Svg::SymbolicActive)
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.apply(widget::button)
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.style(theme::Button::Text)
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.on_press(on_press)
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};
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if let Some(message) = self.on_minimize.take() {
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widgets.push(icon("window-minimize-symbolic", 16, message).into());
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}
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if let Some(message) = self.on_maximize.take() {
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widgets.push(icon("window-maximize-symbolic", 16, message).into());
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}
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if let Some(message) = self.on_close.take() {
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widgets.push(icon("window-close-symbolic", 16, message).into());
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}
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widget::row(widgets)
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.spacing(8)
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.apply(widget::container)
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.height(Length::Fill)
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.center_y()
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.into()
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}
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}
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impl<'a, Message: Clone + 'static> From<HeaderBar<'a, Message>> for Element<'a, Message> {
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fn from(headerbar: HeaderBar<'a, Message>) -> Self {
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headerbar.into_element()
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}
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}
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