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Improve scroll example

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This commit is contained in:
Héctor Ramón Jiménez 2019-10-27 03:04:07 +01:00
parent 82c2aa6bfd
commit e21890168f
1 changed files with 39 additions and 28 deletions
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67
examples/scroll.rs
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@ -1,6 +1,6 @@
use iced::{ use iced::{
button, scrollable, Align, Application, Button, Color, Column, Element, button, scrollable, Align, Application, Button, Column, Element, Image,
Image, Justify, Length, Scrollable, Text, Justify, Length, Scrollable, Text,
}; };
pub fn main() { pub fn main() {
@ -9,7 +9,7 @@ pub fn main() {
#[derive(Default)] #[derive(Default)]
struct Example { struct Example {
paragraph_count: u16, item_count: u16,
scroll: scrollable::State, scroll: scrollable::State,
add_button: button::State, add_button: button::State,
@ -17,7 +17,7 @@ struct Example {
#[derive(Debug, Clone, Copy)] #[derive(Debug, Clone, Copy)]
pub enum Message { pub enum Message {
AddParagraph, AddItem,
} }
impl Application for Example { impl Application for Example {
@ -25,36 +25,47 @@ impl Application for Example {
fn update(&mut self, message: Message) { fn update(&mut self, message: Message) {
match message { match message {
Message::AddParagraph => { Message::AddItem => {
self.paragraph_count += 1; self.item_count += 1;
} }
} }
} }
fn view(&mut self) -> Element<Message> { fn view(&mut self) -> Element<Message> {
let content = (0..3).fold( //let content = (0..3).fold(
Scrollable::new(&mut self.scroll).spacing(20).padding(20), // Scrollable::new(&mut self.scroll).spacing(20).padding(20),
|content, _| { // |content, _| {
content.push( // content.push(
Image::new(format!( // )
"{}/examples/resources/ferris.png", // },
env!("CARGO_MANIFEST_DIR") //);
))
.width(Length::Units(400))
.align_self(Align::Center),
)
},
);
//let content = (0..self.paragraph_count) let content = (0..self.item_count)
// .fold(content, |column, _| column.push(lorem_ipsum())) .fold(
// .push( Scrollable::new(&mut self.scroll)
// Button::new(&mut self.add_button, Text::new("Add paragraph")) .spacing(20)
// .on_press(Message::AddParagraph) .padding(20)
// .padding(20) .align_items(Align::Center),
// .border_radius(5) |column, i| {
// .align_self(Align::Center), if i % 2 == 0 {
// ); column.push(lorem_ipsum().width(Length::Units(600)))
} else {
column.push(
Image::new(format!(
"{}/examples/resources/ferris.png",
env!("CARGO_MANIFEST_DIR")
))
.width(Length::Units(400)),
)
}
},
)
.push(
Button::new(&mut self.add_button, Text::new("Add item"))
.on_press(Message::AddItem)
.padding(20)
.border_radius(5),
);
Column::new() Column::new()
.height(Length::Fill) .height(Length::Fill)