157 lines
3.5 KiB
Rust
157 lines
3.5 KiB
Rust
pub mod helpers;
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pub mod overlay;
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pub mod widget;
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pub(crate) mod flex;
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mod element;
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pub use element::Element;
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pub use helpers::*;
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pub use widget::Widget;
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use iced_native::event::{self, Event};
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use iced_native::layout::{self, Layout};
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use iced_native::mouse;
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use iced_native::renderer;
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use iced_native::{Clipboard, Length, Point, Rectangle, Shell};
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pub struct Pure<'a, Message, Renderer> {
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state: &'a mut State,
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element: Element<'a, Message, Renderer>,
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}
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impl<'a, Message, Renderer> Pure<'a, Message, Renderer>
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where
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Message: 'static,
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Renderer: iced_native::Renderer + 'static,
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{
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pub fn new(
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state: &'a mut State,
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content: impl Into<Element<'a, Message, Renderer>>,
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) -> Self {
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let element = content.into();
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let _ = state.diff(&element);
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Self { state, element }
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}
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}
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pub struct State {
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state_tree: widget::Tree,
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}
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impl State {
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pub fn new() -> Self {
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Self {
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state_tree: widget::Tree::empty(),
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}
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}
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fn diff<Message, Renderer>(
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&mut self,
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new_element: &Element<Message, Renderer>,
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) {
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self.state_tree.diff(new_element);
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}
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}
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impl<'a, Message, Renderer> iced_native::Widget<Message, Renderer>
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for Pure<'a, Message, Renderer>
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where
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Message: 'a,
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Renderer: iced_native::Renderer + 'a,
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{
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fn width(&self) -> Length {
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self.element.as_widget().width()
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}
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fn height(&self) -> Length {
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self.element.as_widget().height()
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}
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fn layout(
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&self,
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renderer: &Renderer,
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limits: &layout::Limits,
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) -> layout::Node {
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self.element.as_widget().layout(renderer, limits)
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}
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fn on_event(
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&mut self,
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event: Event,
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layout: Layout<'_>,
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cursor_position: Point,
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renderer: &Renderer,
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clipboard: &mut dyn Clipboard,
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shell: &mut Shell<'_, Message>,
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) -> event::Status {
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self.element.as_widget_mut().on_event(
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&mut self.state.state_tree,
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event,
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layout,
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cursor_position,
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renderer,
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clipboard,
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shell,
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)
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}
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fn draw(
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&self,
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renderer: &mut Renderer,
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style: &renderer::Style,
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layout: Layout<'_>,
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cursor_position: Point,
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viewport: &Rectangle,
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) {
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self.element.as_widget().draw(
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&self.state.state_tree,
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renderer,
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style,
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layout,
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cursor_position,
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viewport,
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)
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}
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fn mouse_interaction(
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&self,
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layout: Layout<'_>,
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cursor_position: Point,
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viewport: &Rectangle,
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renderer: &Renderer,
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) -> mouse::Interaction {
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self.element.as_widget().mouse_interaction(
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&self.state.state_tree,
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layout,
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cursor_position,
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viewport,
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renderer,
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)
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}
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fn overlay(
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&mut self,
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layout: Layout<'_>,
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renderer: &Renderer,
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) -> Option<overlay::Element<'_, Message, Renderer>> {
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self.element.as_widget_mut().overlay(
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&mut self.state.state_tree,
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layout,
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renderer,
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)
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}
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}
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impl<'a, Message, Renderer> Into<iced_native::Element<'a, Message, Renderer>>
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for Pure<'a, Message, Renderer>
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where
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Message: 'a,
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Renderer: iced_native::Renderer + 'a,
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{
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fn into(self) -> iced_native::Element<'a, Message, Renderer> {
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iced_native::Element::new(self)
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}
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}
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