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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
View file

@ -1,6 +1,6 @@
use iced::{
button, scrollable, Align, Application, Button, Color, Column, Element,
Image, Justify, Length, Scrollable, Text,
button, scrollable, Align, Application, Button, Column, Element, Image,
Justify, Length, Scrollable, Text,
};
pub fn main() {
@ -9,7 +9,7 @@ pub fn main() {
#[derive(Default)]
struct Example {
paragraph_count: u16,
item_count: u16,
scroll: scrollable::State,
add_button: button::State,
@ -17,7 +17,7 @@ struct Example {
#[derive(Debug, Clone, Copy)]
pub enum Message {
AddParagraph,
AddItem,
}
impl Application for Example {
@ -25,36 +25,47 @@ impl Application for Example {
fn update(&mut self, message: Message) {
match message {
Message::AddParagraph => {
self.paragraph_count += 1;
Message::AddItem => {
self.item_count += 1;
}
}
}
fn view(&mut self) -> Element<Message> {
let content = (0..3).fold(
Scrollable::new(&mut self.scroll).spacing(20).padding(20),
|content, _| {
content.push(
Image::new(format!(
"{}/examples/resources/ferris.png",
env!("CARGO_MANIFEST_DIR")
))
.width(Length::Units(400))
.align_self(Align::Center),
)
},
);
//let content = (0..3).fold(
// Scrollable::new(&mut self.scroll).spacing(20).padding(20),
// |content, _| {
// content.push(
// )
// },
//);
//let content = (0..self.paragraph_count)
// .fold(content, |column, _| column.push(lorem_ipsum()))
// .push(
// Button::new(&mut self.add_button, Text::new("Add paragraph"))
// .on_press(Message::AddParagraph)
// .padding(20)
// .border_radius(5)
// .align_self(Align::Center),
// );
let content = (0..self.item_count)
.fold(
Scrollable::new(&mut self.scroll)
.spacing(20)
.padding(20)
.align_items(Align::Center),
|column, i| {
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()
.height(Length::Fill)