Initial commit

utils.py

@@ -0,0 +1,72 @@
+import os
+import subprocess
+from PIL import Image
+import customtkinter as ctk
+
+def parse_float(val_str: str) -> float:
+    """Safely parse a string to float, handling both '.' and ',' as decimal separators."""
+    if not val_str:
+        return None
+    clean_val = val_str.replace(',', '.')
+    try:
+        return float(clean_val)
+    except ValueError:
+        return None
+
+def format_float(val: float, precision: int = 1) -> str:
+    """Format a float for display."""
+    if val is None:
+        return ""
+    return f"{val:.{precision}f}"
+
+def get_bmi_status(bmi):
+    if bmi < 16: return "Severely Underweight", "bmi_severely_underweight.svg", "#3498db"
+    if bmi < 18.5: return "Underweight", "bmi_underweight.svg", "#3498db"
+    if bmi < 25: return "Normal", "bmi_normal.svg", "#2ecc71"
+    if bmi < 30: return "Overweight", "bmi_overweight.svg", "#f1c40f"
+    return "Obese", "bmi_severely_obese.svg", "#e74c3c"
+
+def get_bmi_icon(bmi: float, size: tuple = (100, 100)) -> ctk.CTkImage:
+    """
+    Returns a CTkImage for the given BMI.
+    Converts SVG to PNG using rsvg-convert if needed.
+    """
+    if bmi is None: return None
+    
+    _, filename, _ = get_bmi_status(bmi)
+    
+    base_dir = os.path.dirname(os.path.abspath(__file__))
+    assets_dir = os.path.join(base_dir, "assets", "bmi_icons")
+    cache_dir = os.path.join(assets_dir, "png_cache")
+    
+    svg_path = os.path.join(assets_dir, filename)
+    png_filename = filename.replace(".svg", f"_{size[0]}x{size[1]}.png")
+    png_path = os.path.join(cache_dir, png_filename)
+    
+    if not os.path.exists(svg_path):
+        print(f"Warning: Icon not found at {svg_path}")
+        return None
+        
+    if not os.path.exists(cache_dir):
+        os.makedirs(cache_dir)
+        
+    # Convert if PNG doesn't exist
+    if not os.path.exists(png_path):
+        try:
+            subprocess.run([
+                "rsvg-convert",
+                "-w", str(size[0]),
+                "-h", str(size[1]),
+                "-o", png_path,
+                svg_path
+            ], check=True)
+        except (subprocess.CalledProcessError, FileNotFoundError) as e:
+            print(f"Error converting SVG: {e}")
+            return None
+            
+    try:
+        img = Image.open(png_path)
+        return ctk.CTkImage(light_image=img, dark_image=img, size=size)
+    except Exception as e:
+        print(f"Error loading image: {e}")
+        return None