draw text indicating zoom level

Program.cs

@@ -142,6 +142,7 @@ void main() {
 
 // FIXME: this should probably be IDisposable?
 public class Photo {
+  public bool Loaded = false;
   private string file;
   private Texture texture;
   private Texture placeholder;
@@ -170,6 +171,7 @@ public class Photo {
       texture = new Texture(image);
       image.Dispose();
       image = null;
+      Loaded = true;
     }
     return texture;
   }
@@ -253,22 +255,28 @@ public class UiGeometry {
 public static class Util {
   public const float PI = (float) Math.PI;
 
+  // FIXME: capitalize these functions
   public static Box2i makeBox(int left, int top, int width, int height) {
     return new Box2i(left, top, left + width, top + height);
   }
 
   public static Image<Rgba32> makeImage(float width, float height) {
-    return new((int) Math.Ceiling(width), (int) Math.Ceiling(height), new Rgba32(0x00, 0x00, 0x00, 0x00));
+    return new((int) Math.Ceiling(width), (int) Math.Ceiling(height));
   }
 
   public static Texture renderText(string text) {
-    Font font = SystemFonts.CreateFont("Consolas", 36, FontStyle.Bold);
+    return renderText(text, 16);
+  }
+
+  public static Texture renderText(string text, int size) {
+    Font font = SystemFonts.CreateFont("Consolas", size, FontStyle.Bold);
     TextOptions options = new(font);
-    FontRectangle size = TextMeasurer.Measure(text, new TextOptions(font));
-    Image<Rgba32> image = makeImage(size.Width, size.Height);
+    FontRectangle rect = TextMeasurer.Measure(text, new TextOptions(font));
+    Image<Rgba32> image = makeImage(rect.Width, rect.Height);
     IBrush brush = Brushes.Solid(Color.White);
-    IPen pen = Pens.Solid(Color.Black, 1f);
-    image.Mutate(x => x.DrawText(options, text, brush, pen));
+    // IPen pen = Pens.Solid(Color.Black, 1f);
+    // image.Mutate(x => x.DrawText(options, text, brush, pen));
+    image.Mutate(x => x.DrawText(options, text, brush));
     Texture texture = new Texture(image);
     image.Dispose();
     return texture;
@@ -471,10 +479,11 @@ public class Game : GameWindow {
         DrawBox(box, 3, Color4.White);
       }
     }
-    Texture label = Util.renderText("hello world what is going on");
-    // Texture label = Util.renderStar(10);
-    DrawTexture(label, Util.makeBox(10, 10, label.Size.X, label.Size.Y));
-    label.Dispose();
+    if (photos[photoIndex].Loaded) {
+      Texture label = Util.renderText(String.Format("zoom: {0:F1}%", scale * 100));
+      DrawTexture(label, Util.makeBox(10, 10, label.Size.X, label.Size.Y));
+      label.Dispose();
+    }
 
     SwapBuffers();
   }