iris: make span compaction explicit

examples/tabs/lib.rs

@@ -100,10 +100,12 @@ where
             rect(PaintId::PURPLE).sized((50, 50)).align(Align::TOP),
         )
             .span(Dir::RIGHT)
+            .compact()
             .center(),
         wtext("pretty cool right?").size(50),
     )
         .span(Dir::DOWN)
+        .compact()
         .add(rsc);
 
     let texts = Span::empty(Dir::DOWN).gap(10).add(rsc);

examples/text/lib.rs

@@ -38,24 +38,17 @@ where
         .add(Srgba8::new(53, 57, 66, 255).to_linear());
 
     let styled = "Bold, italic, underlined, and colored spans";
-    let styled = wtext(styled)
-        .size(20)
-        .spans(vec![
-            SpanStyle::new(0..4).bold(),
-            SpanStyle::new(6..12).italic(),
-            SpanStyle::new(14..24).underline(),
-            SpanStyle::new(30..37).color(PaintId::SKY),
-        ])
-        .width(rest(1));
+    let styled = wtext(styled).size(20).spans(vec![
+        SpanStyle::new(0..4).bold(),
+        SpanStyle::new(6..12).italic(),
+        SpanStyle::new(14..24).underline(),
+        SpanStyle::new(30..37).color(PaintId::SKY),
+    ]);
 
     let aligned = (
-        wtext("Left aligned")
-            .text_align(Align::CENTER_LEFT)
-            .width(rest(1)),
-        wtext("Centered").text_align(Align::CENTER).width(rest(1)),
-        wtext("Right aligned")
-            .text_align(Align::CENTER_RIGHT)
-            .width(rest(1)),
+        wtext("Left aligned").text_align(Align::CENTER_LEFT),
+        wtext("Centered").text_align(Align::CENTER),
+        wtext("Right aligned").text_align(Align::CENTER_RIGHT),
     )
         .span(Dir::DOWN)
         .gap(dp(4))
@@ -84,8 +77,7 @@ where
             .spans(vec![SpanStyle::new(0..9).bold()]),
         wtext("Drag across display text to select it. The overflow markers select hidden source text, but are never copied.")
             .overflow(TextOverflow::Wrap)
-            .color(PaintId::GRAY)
-            .width(rest(1)),
+            .color(PaintId::GRAY),
     )
         .span(Dir::DOWN)
         .gap(dp(6))