When no margin detected, reserve a bit more space for comments

copienator/commands/annotating.py

@@ -35,9 +35,9 @@ from copienator.commands.import_annotations import clear_import_directory
 from copienator.answer_info import build_answer_info
 from copienator.filesystem import staged_directory
 from copienator.feedback_boxes import valid_feedback_box
+from copienator.annotation_layout import layout_for
 from copienator.utils import natural_key
 
-MARGIN_LEFT = 300
 ANNOT_WIDTH = 600
 
 
@@ -321,7 +321,7 @@ def compose_label_image(base_img, label, result, hmin,
                         with_error=True,
                         with_empty=False,
                         more_right=False,
-                        with_id=None, source_pdf=None):
+                        with_id=None, source_pdf=None, layout=None):
     """
     Composes the final image with annotations.
 
@@ -350,10 +350,12 @@ def compose_label_image(base_img, label, result, hmin,
                 context = f"Copie : {with_id} — {context}"
             raise AnnotationLatexError(f"{context}\n{exc}") from exc
 
+    layout = dict(layout if layout is not None else layout_for(source_pdf))
+    margin_left = layout['margin_left']
     left_pad = 0
     if base_img.width < TARGET_MIN_WIDTH:
         total_missing = TARGET_MIN_WIDTH - base_img.width
-        left_pad = min(total_missing, MARGIN_LEFT)
+        left_pad = min(total_missing, layout['narrow_left_pad_limit'])
 
         new_base = Image.new("RGB", (TARGET_MIN_WIDTH, base_img.height), "white")
         new_base.paste(base_img, (left_pad, 0))
@@ -409,7 +411,7 @@ def compose_label_image(base_img, label, result, hmin,
     total_height = base_img.height + header_height
 
     # Create Canvas
-    final_img = Image.new("RGB", (base_img.width + MARGIN_LEFT, total_height), "white")
+    final_img = Image.new("RGB", (base_img.width + margin_left, total_height), "white")
 
     # Draw Headers
     current_y = 0
@@ -431,7 +433,7 @@ def compose_label_image(base_img, label, result, hmin,
 
     # Paste Base Image
     image_offset_y = current_y
-    final_img.paste(base_img, (MARGIN_LEFT, image_offset_y))
+    final_img.paste(base_img, (margin_left, image_offset_y))
 
     # 2. Draw Local Annotations
     draw = ImageDraw.Draw(final_img, "RGBA") # Refresh draw object
@@ -443,8 +445,8 @@ def compose_label_image(base_img, label, result, hmin,
 
         target_ymin = (ymin - hmin) + image_offset_y
         target_ymax = (ymax - hmin) + image_offset_y
-        target_xmin = xmin + MARGIN_LEFT + left_pad
-        target_xmax = xmax + MARGIN_LEFT + left_pad
+        target_xmin = xmin + margin_left + left_pad
+        target_xmax = xmax + margin_left + left_pad
 
         # Draw Rectangle (if not suppressed)
         if "norectangle" not in fb:
@@ -485,6 +487,7 @@ def compose_label_image(base_img, label, result, hmin,
 
         last_text_bottom = paste_y + txt_img.height
 
+    final_img.info['annotation_layout'] = layout
     return final_img, header_height
 
 def process_student(student_id, labels_data, root_dir, all_labels, overwrite):
@@ -544,7 +547,7 @@ def process_student(student_id, labels_data, root_dir, all_labels, overwrite):
         if label_images:
             max_w = max(image.width for image in label_images)
             total_h = sum(image.height for image in label_images)
-            canvas = Image.new('RGB', (max_w, total_h))
+            canvas = Image.new('RGB', (max_w, total_h), 'white')
             current_y = 0
             for image in label_images:
                 canvas.paste(image, (0, current_y))