PDF ausfüllen: Textfarbe in den Summenfeldern unter Tabelle von weiß auf schwarz geändert

src/pdf_filler.py

@@ -11,7 +11,7 @@ from pathlib import Path
 from typing import Any, Dict, Optional
 
 from pypdf import PdfReader, PdfWriter
-from pypdf.generic import BooleanObject, NameObject, NumberObject
+from pypdf.generic import BooleanObject, NameObject, NumberObject, TextStringObject
 
 from .config_loader import load_config
 from .exceptions import PdfTemplateError
@@ -99,9 +99,17 @@ def _update_widget_visibility(writer: PdfWriter, fields: Dict[str, str]) -> None
     hidden bit at runtime when ``anwesend.N`` is selected.  Because we write
     values directly without executing JavaScript we must clear the hidden bit
     ourselves for every row where a value is present.
+
+    Also patches the Default Appearance (/DA) of summary fields: the template
+    uses ``1 g`` (white fill color) because JavaScript normally writes the /AP.
+    With NeedAppearances=True pymupdf regenerates /AP from /DA — white text on
+    a white background is invisible.  Replace ``1 g`` with ``0 g`` (black) so
+    the regenerated text is visible.
     """
     HIDDEN_FIELD_PREFIXES = ("ist.", "plan.")
     HIDDEN_BIT = 2  # PDF annotation flag bit 2 = Hidden
+    # Summary fields whose /DA may use white text (1 g); patch to black (0 g).
+    SUM_FIELDS = {"anwesend_sum", "pauschale_5_sum", "pauschale_25_sum", "pauschale_sum"}
 
     for page in writer.pages:
         annots = page.get("/Annots")
@@ -117,9 +125,8 @@ def _update_widget_visibility(writer: PdfWriter, fields: Dict[str, str]) -> None
             else:
                 full_name = t
 
-            if not any(full_name.startswith(p) for p in HIDDEN_FIELD_PREFIXES):
+            # --- Hidden-bit fix for ist.N / plan.N ---
-                continue
+            if any(full_name.startswith(p) for p in HIDDEN_FIELD_PREFIXES):
-
                 has_value = bool(fields.get(full_name, ""))
                 current_f = int(annot.get("/F", 4))
                 # Remove hidden bit when value present, keep/set it when absent
@@ -127,6 +134,12 @@ def _update_widget_visibility(writer: PdfWriter, fields: Dict[str, str]) -> None
                 if new_f != current_f:
                     annot[NameObject("/F")] = NumberObject(new_f)
 
+            # --- /DA color fix for summary fields ---
+            if full_name in SUM_FIELDS:
+                da = str(annot.get("/DA", ""))
+                if da and "1 g" in da:
+                    annot[NameObject("/DA")] = TextStringObject(da.replace("1 g", "0 g"))
+
 
 def fill_pdf(
     attendance: MonthlyAttendance,