ui pipeline

ui/label.sx

@@ -0,0 +1,44 @@
+#import "modules/std.sx";
+#import "ui/types.sx";
+#import "ui/render.sx";
+#import "ui/events.sx";
+#import "ui/view.sx";
+
+GLYPH_WIDTH_APPROX :f32: 8.0;
+GLYPH_HEIGHT_APPROX :f32: 16.0;
+
+Label :: struct {
+    text: string;
+    font_size: f32;
+    color: Color;
+
+    make :: (text: string) -> Label {
+        Label.{
+            text = text,
+            font_size = 14.0,
+            color = COLOR_WHITE
+        };
+    }
+}
+
+impl View for Label {
+    size_that_fits :: (self: *Label, proposal: ProposedSize) -> Size {
+        // Approximate: chars × avg glyph width, scaled by font size
+        scale := self.font_size / GLYPH_HEIGHT_APPROX;
+        w := xx self.text.len * GLYPH_WIDTH_APPROX * scale;
+        h := self.font_size;
+        Size.{ width = w, height = h };
+    }
+
+    layout :: (self: *Label, bounds: Frame) {
+        // Leaf view — nothing to place
+    }
+
+    render :: (self: *Label, ctx: *RenderContext, frame: Frame) {
+        ctx.add_text(frame, self.text, self.font_size, self.color);
+    }
+
+    handle_event :: (self: *Label, event: *Event, frame: Frame) -> bool {
+        false;
+    }
+}