71 lines
2.3 KiB
Rust
71 lines
2.3 KiB
Rust
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use crate::{Primitive, Renderer};
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use iced_native::{
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scrollable, Background, Color, Layout, Point, Rectangle, Scrollable, Widget,
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};
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impl scrollable::Renderer for Renderer {
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fn draw<Message>(
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&mut self,
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scrollable: &Scrollable<'_, Message, Self>,
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layout: Layout<'_>,
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cursor_position: Point,
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) -> Self::Output {
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let bounds = layout.bounds();
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let is_mouse_over = bounds.contains(cursor_position);
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let content = layout.children().next().unwrap();
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let content_bounds = content.bounds();
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let cursor_position = if bounds.contains(cursor_position) {
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Point::new(
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cursor_position.x,
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cursor_position.y + scrollable.state.offset as f32,
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)
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} else {
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Point::new(cursor_position.x, -1.0)
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};
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let (content, mouse_cursor) =
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scrollable.content.draw(self, content, cursor_position);
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let primitive = Primitive::Scrollable {
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bounds,
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offset: scrollable.state.offset,
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content: Box::new(content),
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};
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(
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Primitive::Group {
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primitives: if is_mouse_over
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&& content_bounds.height > bounds.height
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{
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let ratio = bounds.height / content_bounds.height;
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let scrollbar_height = bounds.height * ratio;
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let y_offset = scrollable.state.offset as f32 * ratio;
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let scrollbar = Primitive::Quad {
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bounds: Rectangle {
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x: bounds.x + bounds.width - 12.0,
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y: bounds.y + y_offset,
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width: 10.0,
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height: scrollbar_height,
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},
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background: Background::Color(Color {
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r: 0.0,
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g: 0.0,
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b: 0.0,
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a: 0.5,
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}),
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border_radius: 5,
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};
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vec![primitive, scrollbar]
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} else {
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vec![primitive]
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},
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},
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mouse_cursor,
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)
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}
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}
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