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use crate::event::{Event, EventResult};
use crate::rect::Rect;
use crate::view::{Margins, View, ViewWrapper};
use crate::Printer;
use crate::Vec2;
pub struct PaddedView<V> {
view: V,
margins: Margins,
}
impl<V> PaddedView<V> {
pub fn new(margins: Margins, view: V) -> Self {
PaddedView { view, margins }
}
pub fn lrtb(
left: usize,
right: usize,
top: usize,
bottom: usize,
view: V,
) -> Self {
Self::new(Margins::lrtb(left, right, top, bottom), view)
}
pub fn set_margins(&mut self, margins: Margins) {
self.margins = margins;
}
inner_getters!(self.view: V);
}
impl<V: View> ViewWrapper for PaddedView<V> {
wrap_impl!(self.view: V);
fn wrap_required_size(&mut self, req: Vec2) -> Vec2 {
let margins = self.margins.combined();
self.view.required_size(req.saturating_sub(margins)) + margins
}
fn wrap_layout(&mut self, size: Vec2) {
let margins = self.margins.combined();
self.view.layout(size.saturating_sub(margins));
}
fn wrap_on_event(&mut self, event: Event) -> EventResult {
let padding = self.margins.top_left();
self.view.on_event(event.relativized(padding))
}
fn wrap_draw(&self, printer: &Printer) {
let top_left = self.margins.top_left();
let bot_right = self.margins.bot_right();
let printer = &printer.offset(top_left).shrinked(bot_right);
self.view.draw(printer);
}
fn wrap_important_area(&self, view_size: Vec2) -> Rect {
let inner_size = view_size.saturating_sub(self.margins.combined());
self.view.important_area(inner_size) + self.margins.top_left()
}
}