Add some color to scoring

annotating.py

@@ -214,6 +214,57 @@ def render_latex_text(text, width_px, bg_color=(255, 255, 255, 255), max_lines=N
     final_img.alpha_composite(img)
     return final_img
 
+def render_score_text(label, score, error, width_px, fontsize=18,
+                      bg_color=(255, 255, 255, 255)):
+    # 1. Calculate Color Gradient (0.0=DarkRed -> 4.0=Green)
+    # Clamp score between 0 and 4
+    t = max(0.0, min(1.0, float(score) / 4.0))
+
+    # Dark Red (139, 0, 0) to Green (0, 128, 0)
+    red = 139 * (1 - t)
+    green = 128 * t
+    hex_color = mcolors.to_hex((red/255, green/255, 0))
+
+    # 2. Build Text with Mathtext Color
+    # We use \color{hex} to color specific parts in Matplotlib
+    score_str = f"{label}   ;   Note : \\color{{{hex_color}}}{{{score}}}"
+
+    if error and error != "null":
+        score_str += f"   |   Error: {error}"
+
+    # 3. Wrap Text (using your existing heuristic)
+    dpi = 100
+    fig_width = width_px / dpi
+    chars_per_line = int(fig_width * 10) # Heuristic from your snippet
+
+    # Use your existing wrapper
+    wrapped_text = wrap_latex_text(score_str, chars_per_line)
+
+    # 4. Render (Standard Matplotlib boilerplate)
+    num_lines = wrapped_text.count('\n') + 1
+    fig_height = num_lines * 0.4 + 0.2 # Slight padding adjustment
+
+    fig = plt.figure(figsize=(fig_width, fig_height), dpi=dpi)
+
+    plt.text(0.01, 0.95, wrapped_text, fontsize=fontsize,
+             verticalalignment='top', horizontalalignment='left',
+             wrap=False) # wrap=False because wrap_latex_text handled it
+
+    plt.axis('off')
+
+    buf = io.BytesIO()
+    plt.savefig(buf, format='png', bbox_inches='tight', pad_inches=0.1, transparent=True)
+    plt.close(fig)
+    buf.seek(0)
+
+    img = Image.open(buf).convert("RGBA")
+
+    # Apply background
+    final_img = Image.new("RGBA", img.size, bg_color)
+    final_img.alpha_composite(img)
+
+    return final_img
+
 def compose_label_image(base_img, label, result, hmin,
                         render_fn=render_latex_text,
                         draw_callback=None):
@@ -243,11 +294,7 @@ def compose_label_image(base_img, label, result, hmin,
     # 1. Prepare Headers
     header_elements = []
 
-    # Score
-    score_text = f"{label}   ;   Note : {score}"
-    if error and error != "null": score_text += f"   |   Error: {error}"
-
-    img_score = render_fn(score_text, base_img.width // 2, fontsize=18)
+    img_score = render_score_text(label, score, error, base_img.width // 2, fontsize=18)
     header_elements.append({"type": "score", "img": img_score, "data": result})
 
     # Global Feedbacks