snap text on shader

src/layout/ui.rs

@@ -19,8 +19,8 @@ pub struct Ui<Ctx> {
     base: Option<WidgetId>,
     widgets: Widgets<Ctx>,
     updates: Vec<WidgetId>,
-    recv: Receiver<UiMsg>,
-    send: UiMsgSender,
+    recv: Receiver<Id>,
+    send: Sender<Id>,
     size: Vec2,
     // TODO: make these non pub(crate)
     pub(crate) primitives: Primitives,
@@ -32,12 +32,6 @@ pub struct Ui<Ctx> {
     pub(super) sensor_map: SensorMap<Ctx>,
 }
 
-pub enum UiMsg {
-    FreeWidget(Id),
-    FreeTexture(u32),
-}
-pub type UiMsgSender = Sender<UiMsg>;
-
 #[derive(Default)]
 pub struct Widgets<Ctx> {
     ids: IdTracker,
@@ -96,7 +90,6 @@ impl<Ctx> Ui<Ctx> {
 
     pub fn resize(&mut self, size: impl Into<Vec2>) {
         self.size = size.into();
-        self.full_redraw = true;
     }
 
     pub fn redraw_all(&mut self, ctx: &mut Ctx)
@@ -105,6 +98,7 @@ impl<Ctx> Ui<Ctx> {
     {
         self.active_sensors.clear();
         self.primitives.clear();
+        self.free();
         let mut painter = Painter::new(
             &self.widgets,
             &mut self.primitives,
@@ -124,8 +118,6 @@ impl<Ctx> Ui<Ctx> {
     where
         Ctx: 'static,
     {
-        self.recv_msgs();
-
         if self.full_redraw {
             self.redraw_all(ctx);
             self.full_redraw = false;
@@ -136,13 +128,12 @@ impl<Ctx> Ui<Ctx> {
         }
     }
 
-    fn recv_msgs(&mut self) {
-        while let Ok(msg) = self.recv.try_recv() {
-            match msg {
-                UiMsg::FreeWidget(id) => self.widgets.delete(id),
-                UiMsg::FreeTexture(id) => self.textures.free(id),
-            }
+    /// free any resources that don't have references anymore
+    fn free(&mut self) {
+        for id in self.recv.try_iter() {
+            self.widgets.delete(id);
         }
+        self.textures.free();
     }
 
     pub fn needs_redraw(&self) -> bool {
@@ -237,7 +228,7 @@ impl<Ctx: 'static> Default for Ui<Ctx> {
             widgets: Widgets::new(),
             updates: Default::default(),
             primitives: Default::default(),
-            textures: Textures::new(send.clone()),
+            textures: Textures::new(),
             text: TextData::default(),
             full_redraw: false,
             active_sensors: Default::default(),