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 => {

src/core/text/edit.rs

@@ -163,10 +163,7 @@ impl<'a> TextEditCtx<'a> {
 
     pub fn motion(&mut self, motion: Motion) {
         if let TextSelection::Pos(cursor) = self.text.selection
-            && let Some((cursor, _)) =
-                self.text
-                    .buf
-                    .cursor_motion(self.font_system, cursor, None, motion)
+            && let Some(cursor) = self.buf_motion(cursor, motion)
         {
             self.text.selection = TextSelection::Pos(cursor);
         } else if let TextSelection::Span { start, end } = self.text.selection {
@@ -275,11 +272,7 @@ impl<'a> TextEditCtx<'a> {
         {
             if word {
                 let start = *cursor;
-                if let Some((end, _)) =
-                    self.text
-                        .buf
-                        .cursor_motion(self.font_system, start, None, Motion::RightWord)
-                {
+                if let Some(end) = self.buf_motion(start, Motion::RightWord) {
                     self.delete_between(start, end);
                 }
             } else {
@@ -303,7 +296,23 @@ impl<'a> TextEditCtx<'a> {
         }
     }
 
-    pub fn select(&mut self, pos: Vec2, size: Vec2, drag: bool) {
+    fn buf_motion(&mut self, cursor: Cursor, motion: Motion) -> Option<Cursor> {
+        self.text
+            .buf
+            .cursor_motion(self.font_system, cursor, None, motion)
+            .map(|r| r.0)
+    }
+
+    pub fn select_word_at(&mut self, cursor: Cursor) {
+        if let (Some(start), Some(end)) = (
+            self.buf_motion(cursor, Motion::LeftWord),
+            self.buf_motion(cursor, Motion::RightWord),
+        ) {
+            self.text.selection = TextSelection::Span { start, end };
+        }
+    }
+
+    pub fn select(&mut self, pos: Vec2, size: Vec2, drag: bool, recent: bool) {
         let pos = pos - self.text.region().top_left().to_abs(size);
         let hit = self.text.buf.hit(pos.x, pos.y);
         let sel = &mut self.text.selection;
@@ -316,7 +325,13 @@ impl<'a> TextEditCtx<'a> {
             TextSelection::Pos(pos) => match (hit, drag) {
                 (None, false) => *sel = TextSelection::None,
                 (None, true) => (),
-                (Some(hit), false) => *pos = hit,
+                (Some(hit), false) => {
+                    if recent && hit == *pos {
+                        return self.select_word_at(hit);
+                    } else {
+                        *pos = hit
+                    }
+                }
                 (Some(end), true) => *sel = TextSelection::Span { start: *pos, end },
             },
             TextSelection::Span { start, end } => match (hit, drag) {

src/layout/id.rs

@@ -33,6 +33,12 @@ pub struct WidgetId<W = AnyWidget> {
     _pd: PhantomData<W>,
 }
 
+impl<W> PartialEq for WidgetId<W> {
+    fn eq(&self, other: &Self) -> bool {
+        self.ty == other.ty && self.id == other.id
+    }
+}
+
 /// A WidgetId for a static widget that cannot be removed from a Ui.
 /// Useful because ergonomic clones don't exist yet so you can easily use these in closures.
 /// Do not use this if you want the widget to be freeable.