remove Label::auto_shrink and replace with ui.shrink_width_to_current()

egui/src/context.rs

@@ -600,9 +600,9 @@ impl Context {
             }
         });
 
+        ui.shrink_width_to_current(); // don't let the text below grow this window wider
         ui.add(
-            label!("NOTE: the position of this window cannot be reset from within itself.")
-                .auto_shrink(),
+            label!("NOTE: the position of this window cannot be reset from within itself."), // .auto_shrink(),
         );
     }
 }

egui/src/ui.rs

@@ -209,6 +209,19 @@ impl Ui {
         self.desired_rect.max.y = self.top_left().y + height;
     }
 
+    /// Helper: shrinks the max/desired width to the current width,
+    /// so further widgets will try not to be wider than previous widgets.
+    /// Useful for normal vertical layouts.
+    pub fn shrink_width_to_current(&mut self) {
+        self.set_desired_width(self.child_bounds().width())
+    }
+
+    /// Helper: shrinks the max/desired height to the current height,
+    /// so further widgets will try not to be wider than previous widgets.
+    pub fn shrink_height_to_current(&mut self) {
+        self.set_desired_height(self.child_bounds().height())
+    }
+
     /// Size of content
     pub fn bounding_size(&self) -> Vec2 {
         self.child_bounds.size()

egui/src/widgets.rs

@@ -33,7 +33,6 @@ pub struct Label {
     // TODO: not pub
     pub(crate) text: String,
     pub(crate) multiline: bool,
-    auto_shrink: bool,
     pub(crate) text_style: Option<TextStyle>,
     pub(crate) text_color: Option<Srgba>,
 }
@@ -43,7 +42,6 @@ impl Label {
         Self {
             text: text.into(),
             multiline: true,
-            auto_shrink: false,
             text_style: None,
             text_color: None,
         }
@@ -58,14 +56,6 @@ impl Label {
         self
     }
 
-    /// If true, will word wrap to `ui.available_finite().width()`.
-    /// If false (default), will word wrap to `ui.available().width()`.
-    /// This only makes a difference for auto-sized parents.
-    pub fn auto_shrink(mut self) -> Self {
-        self.auto_shrink = true;
-        self
-    }
-
     /// If you do not set a `TextStyle`, the default `style.text_style`.
     pub fn text_style(mut self, text_style: TextStyle) -> Self {
         self.text_style = Some(text_style);
@@ -82,11 +72,10 @@ impl Label {
     }
 
     pub fn layout(&self, ui: &Ui) -> font::Galley {
-        let max_width = if self.auto_shrink {
-            ui.available_finite().width()
-        } else {
-            ui.available().width()
-        };
+        let max_width = ui.available().width();
+        // Prevent word-wrapping after a single letter, and other silly shit:
+        // TODO: general "don't force labels and similar to wrap so early"
+        // TODO: max_width = max_width.at_least(ui.spacing.first_wrap_width);
         self.layout_width(ui, max_width)
     }