word selection

src/bin/test/main.rs

@@ -5,7 +5,10 @@ use input::Input;
 use iris::prelude::*;
 use len_fns::*;
 use render::Renderer;
-use std::sync::Arc;
+use std::{
+    sync::Arc,
+    time::{Duration, Instant},
+};
 use winit::{
     dpi::{LogicalPosition, LogicalSize},
     event::{Ime, WindowEvent},
@@ -30,6 +33,7 @@ pub struct Client {
     focus: Option<WidgetId<TextEdit>>,
     clipboard: Clipboard,
     ime: usize,
+    last_click: Instant,
 }
 
 #[derive(Eq, PartialEq, Hash, Clone)]
@@ -50,10 +54,15 @@ impl WidgetAttr<TextEdit> for Selectable {
             &id.clone(),
             CursorSense::click_or_drag(),
             move |client: &mut Client, data| {
-                client
-                    .ui
-                    .text(&id)
-                    .select(data.cursor, data.size, data.sense.is_dragging());
+                let now = Instant::now();
+                let recent = (now - client.last_click) < Duration::from_millis(300);
+                client.last_click = now;
+                client.ui.text(&id).select(
+                    data.cursor,
+                    data.size,
+                    data.sense.is_dragging(),
+                    recent,
+                );
                 if let Some(region) = client.ui.window_region(&id) {
                     client.window.set_ime_allowed(true);
                     client.window.set_ime_cursor_area(
@@ -249,16 +258,15 @@ impl Client {
             focus: None,
             clipboard: Clipboard::new().unwrap(),
             ime: 0,
+            last_click: Instant::now(),
         }
     }
 
     pub fn event(&mut self, event: WindowEvent, event_loop: &ActiveEventLoop) {
         let input_changed = self.input.event(&event);
         let cursor_state = self.cursor_state().clone();
-        if let Some(focus) = &self.focus
-            && cursor_state.buttons.left.is_start()
-        {
-            self.ui.text(focus).deselect();
+        let old = self.focus.clone();
+        if cursor_state.buttons.left.is_start() {
             self.focus = None;
         }
         if input_changed {
@@ -266,6 +274,11 @@ impl Client {
             self.run_sensors(&cursor_state, window_size);
             self.ui.run_sensors(&cursor_state, window_size);
         }
+        if old != self.focus
+            && let Some(old) = old
+        {
+            self.ui.text(&old).deselect();
+        }
         match event {
             WindowEvent::CloseRequested => event_loop.exit(),
             WindowEvent::RedrawRequested => {