try to change the image size

app.py

@@ -32,36 +32,42 @@ def get_dominant_color(image):
 
 def change_size(image, selected_size, size_align):
     target_size = size_options[selected_size]
+    new_width, new_height = target_size
     
-    # Maintain aspect ratio without stretching
-    image.thumbnail(target_size, PIL.Image.Resampling.LANCZOS)
-    
+    # Resize the image to maintain aspect ratio and fit within the half-height
+    image.thumbnail((new_width, new_height // 2), PIL.Image.Resampling.LANCZOS)
+
+    # Obtain the dominant color of the image
     dominant_color = get_dominant_color(image)
     
+    # Create a new image with the dominant color as the background
     new_image = Image.new("RGB", target_size, dominant_color)
 
-    # size allignment position left, right, and center
-
+    # Size alignment for position: left, right, center, bottom, top
     if size_align == "Left":
         x_offset = 0
+        y_offset = 0  # Place at the top
     elif size_align == "Right":
         x_offset = target_size[0] - image.width
-    else:
+        y_offset = 0  # Place at the top
+    elif size_align == "Top":
         x_offset = (target_size[0] - image.width) // 2
-
-    # size allignment position top, bottom, and center
-
-    if size_align == "Top":
-        y_offset = 1
+        y_offset = 0  # Place at the top
     elif size_align == "Bottom":
-        y_offset = target_size[1] - image.width
-    else:
-        y_offset = (target_size[1] - image.width) // 2
-    
+        x_offset = (target_size[0] - image.width) // 2
+        y_offset = (target_size[1] - image.height)  # Place at the bottom
+    else:  # Center
+        x_offset = (target_size[0] - image.width) // 2
+        y_offset = 0  # Place at the top
+
+    # Paste the resized image onto the new background
     new_image.paste(image, (x_offset, y_offset))
     
     return new_image
 
+
+
+
 def gradio_interface():
     with gr.Blocks() as demo:
         gr.Markdown("# Advanced Image Resizer with Background and Margins")