Attempt 2 to keep qr code size ration when making high res generations

app.py

@@ -44,13 +44,7 @@ pipe = StableDiffusionControlNetImg2ImgPipeline.from_pretrained(
 def resize_for_condition_image(input_image: Image.Image, resolution: int, canvas_width: int = None, canvas_height: int = None):
     input_image = input_image.convert("RGB")
     W, H = input_image.size
-    k = float(resolution) / min(H, W)
-    H *= k
-    W *= k
-    H = int(round(H / 64.0)) * 64
-    W = int(round(W / 64.0)) * 64
-    input_image = input_image.resize((W, H), resample=Image.LANCZOS)
-    
+
     # Create a blank canvas with the specified dimensions
     if canvas_width is None:
         canvas_width = W
@@ -59,8 +53,16 @@ def resize_for_condition_image(input_image: Image.Image, resolution: int, canvas
 
     canvas = Image.new("RGB", (canvas_width, canvas_height), "white")
 
-    # Paste the resized QR code on the right half of the canvas
-    qr_x = int(canvas_width * (2 / 3)) - (W // 2)  # 2/3rd of the canvas width, centering the QR code
+    # Determine the relative size of the QR code based on the canvas dimensions
+    qr_scale_ratio = 768 / min(1024, 768)  # Base ratio (relative to 1024x768)
+    qr_target_size = int(min(canvas_width, canvas_height) * qr_scale_ratio)
+
+    # Resize the QR code to maintain its relative size
+    input_image = input_image.resize((qr_target_size, qr_target_size), resample=Image.LANCZOS)
+    W, H = input_image.size
+
+    # Paste the resized QR code 2/3rds of the way over the canvas
+    qr_x = int(canvas_width * (2 / 3)) - (W // 2)  # Adjust x-coordinate to 2/3 of the canvas
     qr_y = (canvas_height - H) // 2  # Center the QR code vertically
     canvas.paste(input_image, (qr_x, qr_y))
     return canvas