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166 lines
4.7 KiB
166 lines
4.7 KiB
use crate::{
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strutil::StringType,
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time::Instant,
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ui::{
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component::{Component, Event, EventCtx, Marquee, Never},
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display,
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geometry::{Alignment, Offset, Rect},
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shape,
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shape::Renderer,
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},
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};
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use super::super::theme;
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pub struct Title<T>
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where
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T: StringType,
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{
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area: Rect,
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title: T,
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marquee: Marquee<T>,
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needs_marquee: bool,
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centered: bool,
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}
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impl<T> Title<T>
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where
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T: StringType + Clone,
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{
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pub fn new(title: T) -> Self {
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Self {
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title: title.clone(),
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marquee: Marquee::new(title, theme::FONT_HEADER, theme::FG, theme::BG),
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needs_marquee: false,
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area: Rect::zero(),
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centered: false,
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}
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}
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pub fn with_centered(mut self) -> Self {
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self.centered = true;
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self
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}
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pub fn get_text(&self) -> &str {
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self.title.as_ref()
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}
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pub fn set_text(&mut self, ctx: &mut EventCtx, new_text: T) {
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self.title = new_text.clone();
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self.marquee.set_text(new_text.clone());
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let text_width = theme::FONT_HEADER.text_width(new_text.as_ref());
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self.needs_marquee = text_width > self.area.width();
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// Resetting the marquee to the beginning and starting it when necessary.
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self.marquee.reset();
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if self.needs_marquee {
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self.marquee.start(ctx, Instant::now());
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}
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}
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/// Display title/header at the top left of the given area.
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pub fn paint_header_left(title: &T, area: Rect) {
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let text_height = theme::FONT_HEADER.text_height();
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let title_baseline = area.top_left() + Offset::y(text_height - 1);
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display::text_left(
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title_baseline,
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title.as_ref(),
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theme::FONT_HEADER,
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theme::FG,
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theme::BG,
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);
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}
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/// Display title/header at the top left of the given area.
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pub fn render_header_left<'s>(target: &mut impl Renderer<'s>, title: &T, area: Rect) {
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let text_height = theme::FONT_HEADER.text_height();
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let title_baseline = area.top_left() + Offset::y(text_height - 1);
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shape::Text::new(title_baseline, title.as_ref())
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.with_font(theme::FONT_HEADER)
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.with_fg(theme::FG)
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.render(target);
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}
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/// Display title/header centered at the top of the given area.
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pub fn paint_header_centered(title: &T, area: Rect) {
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let text_height = theme::FONT_HEADER.text_height();
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let title_baseline = area.top_center() + Offset::y(text_height - 1);
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display::text_center(
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title_baseline,
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title.as_ref(),
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theme::FONT_HEADER,
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theme::FG,
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theme::BG,
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);
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}
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/// Display title/header centered at the top of the given area.
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pub fn render_header_centered<'s>(target: &mut impl Renderer<'s>, title: &T, area: Rect) {
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let text_height = theme::FONT_HEADER.text_height();
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let title_baseline = area.top_center() + Offset::y(text_height - 1);
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shape::Text::new(title_baseline, title.as_ref())
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.with_align(Alignment::Center)
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.with_font(theme::FONT_HEADER)
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.with_fg(theme::FG)
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.render(target);
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}
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}
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impl<T> Component for Title<T>
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where
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T: StringType + Clone,
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{
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type Msg = Never;
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fn place(&mut self, bounds: Rect) -> Rect {
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self.area = bounds;
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self.marquee.place(bounds);
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let width = theme::FONT_HEADER.text_width(self.title.as_ref());
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self.needs_marquee = width > self.area.width();
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bounds
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}
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fn event(&mut self, ctx: &mut EventCtx, event: Event) -> Option<Self::Msg> {
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if self.needs_marquee {
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if !self.marquee.is_animating() {
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self.marquee.start(ctx, Instant::now());
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}
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return self.marquee.event(ctx, event);
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}
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None
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}
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fn paint(&mut self) {
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if self.needs_marquee {
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self.marquee.paint();
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} else if self.centered {
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Self::paint_header_centered(&self.title, self.area);
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} else {
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Self::paint_header_left(&self.title, self.area);
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}
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}
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fn render<'s>(&'s self, target: &mut impl Renderer<'s>) {
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if self.needs_marquee {
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self.marquee.render(target);
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} else if self.centered {
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Self::render_header_centered(target, &self.title, self.area);
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} else {
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Self::render_header_left(target, &self.title, self.area);
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}
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}
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}
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// DEBUG-ONLY SECTION BELOW
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#[cfg(feature = "ui_debug")]
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impl<T> crate::trace::Trace for Title<T>
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where
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T: StringType + Clone,
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{
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fn trace(&self, t: &mut dyn crate::trace::Tracer) {
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t.component("Title");
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t.string("text", self.title.as_ref().into());
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}
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}
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