67 lines
2.0 KiB
Rust
67 lines
2.0 KiB
Rust
use crate::prelude::*;
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use std::time::{Duration, Instant};
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use winit::dpi::{LogicalPosition, LogicalSize};
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pub struct Selector;
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impl<State: HasEvents, W: Widget + 'static> WidgetAttr<State, W> for Selector
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where
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State::State: HasDefaultUiState,
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{
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type Input = WidgetRef<TextEdit>;
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fn run(state: &mut State, container: WidgetRef<W>, id: Self::Input) {
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state.register_event(container, CursorSense::click_or_drag(), move |ctx| {
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let region = ctx.ui().window_region(&id).unwrap();
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let id_pos = region.top_left;
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let container_pos = ctx.state.ui().window_region(&container).unwrap().top_left;
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let pos = ctx.data.pos + container_pos - id_pos;
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let size = region.size();
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select(ctx.state, id, pos, size, ctx.data.sense.is_dragging());
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});
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}
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}
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pub struct Selectable;
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impl<State: HasEvents> WidgetAttr<State, TextEdit> for Selectable
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where
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State::State: HasDefaultUiState,
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{
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type Input = ();
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fn run(state: &mut State, id: WidgetRef<TextEdit>, _: Self::Input) {
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state.register_event(id, CursorSense::click_or_drag(), move |ctx| {
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select(
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ctx.state,
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id,
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ctx.data.pos,
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ctx.data.size,
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ctx.data.sense.is_dragging(),
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);
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});
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}
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}
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fn select(
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state: &mut impl HasDefaultUiState,
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id: WidgetRef<TextEdit>,
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pos: Vec2,
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size: Vec2,
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dragging: bool,
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) {
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let (ui, state) = HasDefaultUiState::ui_with_state(state);
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let now = Instant::now();
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let recent = (now - state.last_click) < Duration::from_millis(300);
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state.last_click = now;
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id.edit(ui).select(pos, size, dragging, recent);
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if let Some(region) = ui.window_region(&id) {
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state.window.set_ime_allowed(true);
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state.window.set_ime_cursor_area(
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LogicalPosition::<f32>::from(region.top_left.tuple()),
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LogicalSize::<f32>::from(region.size().tuple()),
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);
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}
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state.focus = Some(id);
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}
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