add default winit framework

src/winit/attr.rs

@@ -0,0 +1,59 @@
+use crate::{prelude::*, winit::DefaultUi};
+use std::time::{Duration, Instant};
+use winit::dpi::{LogicalPosition, LogicalSize};
+
+pub struct Selector;
+
+impl<W: 'static> WidgetAttr<W> for Selector {
+    type Input = WidgetId<TextEdit>;
+
+    fn run(ui: &mut Ui, container: &WidgetId<W>, id: Self::Input) {
+        let container = container.clone();
+        ui.register_event(
+            &container.clone(),
+            CursorSense::click_or_drag(),
+            move |ui: &mut DefaultUi, mut data| {
+                let region = ui.window_region(&id).unwrap();
+                let id_pos = region.top_left;
+                let container_pos = ui.window_region(&container).unwrap().top_left;
+                data.cursor += container_pos - id_pos;
+                data.size = region.size();
+                select(id.clone(), ui, data);
+            },
+        );
+    }
+}
+
+pub struct Selectable;
+
+impl WidgetAttr<TextEdit> for Selectable {
+    type Input = ();
+
+    fn run(ui: &mut Ui, id: &WidgetId<TextEdit>, _: Self::Input) {
+        let id = id.clone();
+        ui.register_event(
+            &id.clone(),
+            CursorSense::click_or_drag(),
+            move |ui: &mut DefaultUi, data| {
+                select(id.clone(), ui, data);
+            },
+        );
+    }
+}
+
+fn select(id: WidgetId<TextEdit>, ui: &mut DefaultUi, data: CursorData) {
+    let now = Instant::now();
+    let recent = (now - ui.last_click) < Duration::from_millis(300);
+    ui.last_click = now;
+    ui.ui
+        .text(&id)
+        .select(data.cursor, data.size, data.sense.is_dragging(), recent);
+    if let Some(region) = ui.ui.window_region(&id) {
+        ui.window.set_ime_allowed(true);
+        ui.window.set_ime_cursor_area(
+            LogicalPosition::<f32>::from(region.top_left.tuple()),
+            LogicalSize::<f32>::from(region.size().tuple()),
+        );
+    }
+    ui.focus = Some(id);
+}