StyleSheet: respect a font weight set for header sections

QCommonStyle sets the font for a selected header section to bold.
This overrides the font weight a calling style might already have set,
e.g. when a style sheet is applied to explicitly set a weight for a
checked header section:

QHeaderView::section:checked {
   font-size: 20px
   font-weight: normal
}

Since setting the weight on a font sets the respective resolve-mask
bit, we can avoid overwriting a weight that is already set explicitly.

Add baseline test coverage using a QTableWidget.

Fixes: QTBUG-122180
Pick-to: 6.7 6.5
Change-Id: I8c6279ad2fd8c5718ebea26e27c64ae823625748
Reviewed-by: Axel Spoerl <axel.spoerl@qt.io>

1 files changed, 16 insertions, 0 deletions

diff --git a/tests/baseline/stylesheet/qss/qheaderview/selectedFontWeight.qss b/tests/baseline/stylesheet/qss/qheaderview/selectedFontWeight.qss
new file mode 100644
index 0000000000..1c45a99767
--- /dev/null
+++ b/tests/baseline/stylesheet/qss/qheaderview/selectedFontWeight.qss
@@ -0,0 +1,16 @@
+QHeaderView::section {
+    background-color: red;
+    font-size: 10px;
+}
+
+QHeaderView::section:checked {
+    background-color: green;
+    font-size: 20px;
+    font-weight: bold;
+}
+
+QHeaderView::section:first {
+    background-color: yellow;
+    font-size: 20px;
+    font-weight: normal;
+}