egui/emigui/src/containers/frame.rs
2020-05-23 11:28:21 +02:00

123 lines
3.2 KiB
Rust

//! Frame container
use crate::{paint::*, *};
#[derive(Clone, Debug, Default)]
pub struct Frame {
// On each side
pub margin: Vec2,
pub corner_radius: f32,
pub fill_color: Option<Color>,
pub outline: Option<Outline>,
}
impl Frame {
pub fn window(style: &Style) -> Self {
Self {
margin: style.window_padding,
corner_radius: style.window.corner_radius,
fill_color: Some(style.background_fill_color),
outline: style.interact.inactive.rect_outline, // becauce we can resize windows
}
}
pub fn menu_bar(_style: &Style) -> Self {
Self {
margin: Vec2::splat(1.0),
corner_radius: 0.0,
fill_color: None,
outline: Some(Outline::new(0.5, color::white(128))),
}
}
pub fn menu(style: &Style) -> Self {
Self {
margin: Vec2::splat(1.0),
corner_radius: 2.0,
fill_color: Some(style.background_fill_color),
outline: Some(Outline::new(1.0, color::white(128))),
}
}
pub fn popup(style: &Style) -> Self {
Self {
margin: style.window_padding,
corner_radius: 5.0,
fill_color: Some(style.background_fill_color),
outline: Some(Outline::new(1.0, color::white(128))),
}
}
pub fn fill_color(mut self, fill_color: Option<Color>) -> Self {
self.fill_color = fill_color;
self
}
pub fn outline(mut self, outline: Option<Outline>) -> Self {
self.outline = outline;
self
}
}
pub struct Prepared {
pub frame: Frame,
outer_rect_bounds: Rect,
where_to_put_background: usize,
pub content_ui: Ui,
}
impl Frame {
pub fn begin(self, ui: &mut Ui) -> Prepared {
let outer_rect_bounds = ui.available();
let inner_rect = outer_rect_bounds.shrink2(self.margin);
let where_to_put_background = ui.paint_list_len();
let content_ui = ui.child_ui(inner_rect);
Prepared {
frame: self,
outer_rect_bounds,
where_to_put_background,
content_ui,
}
}
pub fn show<R>(self, ui: &mut Ui, add_contents: impl FnOnce(&mut Ui) -> R) -> R {
let mut prepared = self.begin(ui);
let ret = add_contents(&mut prepared.content_ui);
prepared.end(ui);
ret
}
}
impl Prepared {
pub fn outer_rect(&self) -> Rect {
Rect::from_min_max(
self.outer_rect_bounds.min,
self.content_ui.child_bounds().max + self.frame.margin,
)
}
pub fn end(self, ui: &mut Ui) -> Rect {
let outer_rect = self.outer_rect();
let Prepared {
frame,
where_to_put_background,
..
} = self;
ui.insert_paint_cmd(
where_to_put_background,
PaintCmd::Rect {
corner_radius: frame.corner_radius,
fill_color: frame.fill_color,
outline: frame.outline,
rect: outer_rect,
},
);
ui.expand_to_include_child(outer_rect);
// TODO: move cursor in parent ui
outer_rect
}
}