Step 119: zoom controls

editor/src/ZoomUtils.h

@@ -0,0 +1,14 @@
+#pragma once
+// Step 119: Zoom utilities
+
+inline int clampFontSize(int size, int minSize = 12, int maxSize = 24) {
+    if (size < minSize) return minSize;
+    if (size > maxSize) return maxSize;
+    return size;
+}
+
+inline int zoomPercent(int fontSize, float baseFontSize) {
+    if (baseFontSize <= 0.0f) return 100;
+    float pct = (fontSize / baseFontSize) * 100.0f;
+    return (int)(pct + 0.5f);
+}