Fix: non-bold TitleStyle is now rendered as non-bold even when the cu…

…rrent font is bold - fix #1072 (#1078)

CHANGELOG.md

@@ -21,6 +21,7 @@ This can also be enabled programmatically with `warnings.simplefilter('default',
 * support for `<path>` elements in SVG `<clipPath>` elements
 ### Fixed
 * When adding a link on a table cell, an extra link was added erroneously on the left. Moreover, now `FPDF._disable_writing()` properly disable link writing.
+* non-bold `TitleStyle` is now rendered as non-bold even when the current font is bold
 
 ## [2.7.7] - 2023-12-10
 ### Added

fpdf/fpdf.py

@@ -4871,9 +4871,7 @@ def use_font_face(self, font_face: FontFace):
         prev_font = (self.font_family, self.font_style, self.font_size_pt)
         self.set_font(
             font_face.family or self.font_family,
-            font_face.emphasis.style
-            if font_face.emphasis is not None
-            else self.font_style,
+            font_face.emphasis.style if font_face.emphasis is not None else "",
             font_face.size_pt or self.font_size_pt,
         )
         prev_text_color = self.text_color

test/outline/test_outline.py

@@ -231,3 +231,12 @@ def test_toc_without_font_style(tmp_path):  # issue-676
     pdf.start_section("Title")
     pdf.start_section("Subtitle", level=1)
     assert_pdf_equal(pdf, HERE / "toc_without_font_style.pdf", tmp_path)
+
+
+def test_toc_with_font_style_override_bold(tmp_path):  # issue-1072
+    pdf = FPDF()
+    pdf.add_page()
+    pdf.set_font("Helvetica", "B")
+    pdf.set_section_title_styles(TitleStyle("Helvetica", "", 20, (0, 0, 0)))
+    pdf.start_section("foo")
+    assert_pdf_equal(pdf, HERE / "toc_with_font_style_override_bold.pdf", tmp_path)