diff options
Diffstat (limited to 'src/doc/book/listings/ch17-oop/listing-17-09')
4 files changed, 79 insertions, 0 deletions
diff --git a/src/doc/book/listings/ch17-oop/listing-17-09/Cargo.lock b/src/doc/book/listings/ch17-oop/listing-17-09/Cargo.lock new file mode 100644 index 000000000..00d7b2182 --- /dev/null +++ b/src/doc/book/listings/ch17-oop/listing-17-09/Cargo.lock @@ -0,0 +1,6 @@ +# This file is automatically @generated by Cargo. +# It is not intended for manual editing. +[[package]] +name = "gui" +version = "0.1.0" + diff --git a/src/doc/book/listings/ch17-oop/listing-17-09/Cargo.toml b/src/doc/book/listings/ch17-oop/listing-17-09/Cargo.toml new file mode 100644 index 000000000..9b816e766 --- /dev/null +++ b/src/doc/book/listings/ch17-oop/listing-17-09/Cargo.toml @@ -0,0 +1,6 @@ +[package] +name = "gui" +version = "0.1.0" +edition = "2021" + +[dependencies] diff --git a/src/doc/book/listings/ch17-oop/listing-17-09/src/lib.rs b/src/doc/book/listings/ch17-oop/listing-17-09/src/lib.rs new file mode 100644 index 000000000..960fee23d --- /dev/null +++ b/src/doc/book/listings/ch17-oop/listing-17-09/src/lib.rs @@ -0,0 +1,27 @@ +pub trait Draw { + fn draw(&self); +} + +pub struct Screen { + pub components: Vec<Box<dyn Draw>>, +} + +impl Screen { + pub fn run(&self) { + for component in self.components.iter() { + component.draw(); + } + } +} + +pub struct Button { + pub width: u32, + pub height: u32, + pub label: String, +} + +impl Draw for Button { + fn draw(&self) { + // code to actually draw a button + } +} diff --git a/src/doc/book/listings/ch17-oop/listing-17-09/src/main.rs b/src/doc/book/listings/ch17-oop/listing-17-09/src/main.rs new file mode 100644 index 000000000..4eb13f6b7 --- /dev/null +++ b/src/doc/book/listings/ch17-oop/listing-17-09/src/main.rs @@ -0,0 +1,40 @@ +use gui::Draw; + +struct SelectBox { + width: u32, + height: u32, + options: Vec<String>, +} + +impl Draw for SelectBox { + fn draw(&self) { + // code to actually draw a select box + } +} + +// ANCHOR: here +use gui::{Button, Screen}; + +fn main() { + let screen = Screen { + components: vec![ + Box::new(SelectBox { + width: 75, + height: 10, + options: vec![ + String::from("Yes"), + String::from("Maybe"), + String::from("No"), + ], + }), + Box::new(Button { + width: 50, + height: 10, + label: String::from("OK"), + }), + ], + }; + + screen.run(); +} +// ANCHOR_END: here |