diff options
Diffstat (limited to 'examples/combo_box/src/main.rs')
| -rw-r--r-- | examples/combo_box/src/main.rs | 196 |
1 files changed, 76 insertions, 120 deletions
diff --git a/examples/combo_box/src/main.rs b/examples/combo_box/src/main.rs index 742378c0..75a3f713 100644 --- a/examples/combo_box/src/main.rs +++ b/examples/combo_box/src/main.rs @@ -1,121 +1,6 @@ -mod combo_box { - use iced_native::{ - layout, mouse, Background, Color, Element, Hasher, Layer, Layout, - Length, Overlay, Point, Size, Vector, Widget, - }; - use iced_wgpu::{Defaults, Primitive, Renderer}; - - pub struct ComboBox; - - impl ComboBox { - pub fn new() -> Self { - Self - } - } - - impl<'a, Message> Widget<'a, Message, Renderer> for ComboBox { - fn width(&self) -> Length { - Length::Shrink - } - - fn height(&self) -> Length { - Length::Shrink - } - - fn layout( - &self, - _renderer: &Renderer, - _limits: &layout::Limits, - ) -> layout::Node { - layout::Node::new(Size::new(50.0, 50.0)) - } - - fn hash_layout(&self, _state: &mut Hasher) {} - - fn draw( - &self, - _renderer: &mut Renderer, - _defaults: &Defaults, - layout: Layout<'_>, - _cursor_position: Point, - ) -> (Primitive, mouse::Interaction) { - let primitive = Primitive::Quad { - bounds: layout.bounds(), - background: Background::Color(Color::BLACK), - border_width: 0, - border_radius: 0, - border_color: Color::TRANSPARENT, - }; - - (primitive, mouse::Interaction::default()) - } - - fn overlay( - &mut self, - layout: Layout<'_>, - ) -> Option<Overlay<'a, Message, Renderer>> { - Some(Overlay::new(layout.position(), Box::new(Menu))) - } - } - - impl<'a, Message> Into<Element<'a, Message, Renderer>> for ComboBox { - fn into(self) -> Element<'a, Message, Renderer> { - Element::new(self) - } - } - - pub struct Menu; - - impl<Message> Layer<Message, Renderer> for Menu { - fn layout( - &self, - _renderer: &Renderer, - _bounds: Size, - position: Point, - ) -> layout::Node { - let mut node = layout::Node::new(Size::new(100.0, 100.0)); - - node.move_to(position + Vector::new(25.0, 25.0)); - - node - } - - fn hash_layout(&self, state: &mut Hasher, position: Point) { - use std::hash::Hash; - - (position.x as u32).hash(state); - (position.y as u32).hash(state); - } - - fn draw( - &self, - _renderer: &mut Renderer, - _defaults: &Defaults, - layout: Layout<'_>, - _cursor_position: Point, - ) -> (Primitive, mouse::Interaction) { - let primitive = Primitive::Quad { - bounds: layout.bounds(), - background: Background::Color(Color { - r: 0.0, - g: 0.0, - b: 1.0, - a: 0.5, - }), - border_width: 0, - border_radius: 0, - border_color: Color::TRANSPARENT, - }; - - (primitive, mouse::Interaction::default()) - } - } -} - -pub use combo_box::ComboBox; - use iced::{ - button, Button, Column, Container, Element, Length, Sandbox, Settings, Text, + button, combo_box, Button, Column, ComboBox, Container, Element, Length, + Sandbox, Settings, Text, }; pub fn main() { @@ -125,11 +10,14 @@ pub fn main() { #[derive(Default)] struct Example { button: button::State, + combo_box: combo_box::State, + selected_language: Language, } #[derive(Debug, Clone, Copy)] enum Message { ButtonPressed, + LanguageSelected(Language), } impl Sandbox for Example { @@ -143,15 +31,36 @@ impl Sandbox for Example { String::from("Combo box - Iced") } - fn update(&mut self, _message: Message) {} + fn update(&mut self, message: Message) { + match message { + Message::ButtonPressed => {} + Message::LanguageSelected(language) => { + self.selected_language = language; + } + } + } fn view(&mut self) -> Element<Message> { - let combo_box = ComboBox::new(); + let combo_box = ComboBox::new( + &mut self.combo_box, + &Language::ALL[..], + Some(self.selected_language), + Message::LanguageSelected, + ); let button = Button::new(&mut self.button, Text::new("Press me!")) .on_press(Message::ButtonPressed); - let content = Column::new().spacing(10).push(combo_box).push(button); + let mut content = Column::new() + .spacing(10) + .push(Text::new("Which is your favorite language?")) + .push(combo_box); + + if self.selected_language == Language::Javascript { + content = content.push(Text::new("You are wrong!")); + } + + content = content.push(button); Container::new(content) .width(Length::Fill) @@ -161,3 +70,50 @@ impl Sandbox for Example { .into() } } + +#[derive(Debug, Clone, Copy, PartialEq, Eq)] +pub enum Language { + Rust, + Elm, + Ruby, + Haskell, + C, + Javascript, + Other, +} + +impl Language { + const ALL: [Language; 7] = [ + Language::C, + Language::Elm, + Language::Ruby, + Language::Haskell, + Language::Rust, + Language::Javascript, + Language::Other, + ]; +} + +impl Default for Language { + fn default() -> Language { + Language::Rust + } +} + +impl std::fmt::Display for Language { + fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result { + write!( + f, + "{}", + match self { + Language::Rust => "Rust", + Language::Elm => "Elm", + Language::Ruby => "Ruby", + Language::Haskell => "Haskell", + Language::C => "C", + Language::Javascript => "Javascript", + Language::Other => "Some other language", + } + ) + } +} |