KItemListWidget: Use strokePath instead of drawPath

StrokePath gives the focus frame a less blurry look

Since the path is bit thinner now, we need to adjust the
alpha level to make it easier to see.

This is especially visible in dark themes.

BUG: 507005

1 files changed, 5 insertions, 5 deletions

diff --git a/src/kitemviews/kitemlistwidget.cpp b/src/kitemviews/kitemlistwidget.cpp
index c06e46339..154196a3c 100644
--- a/src/kitemviews/kitemlistwidget.cpp
+++ b/src/kitemviews/kitemlistwidget.cpp
@@ -623,14 +623,15 @@ void KItemListWidget::drawItemStyleOption(QPainter *painter, QWidget *widget, QS
 {
     QStyleOptionViewItem viewItemOption;
     constexpr int roundness = 5; // From Breeze style.
-    constexpr qreal penWidth = 1.5;
+    constexpr qreal penWidth = 1.25;
     initStyleOption(&viewItemOption);
     viewItemOption.state = styleState;
     viewItemOption.viewItemPosition = QStyleOptionViewItem::OnlyOne;
     viewItemOption.showDecorationSelected = true;
     viewItemOption.rect = selectionRectFull().toRect();
     QPainterPath path;
-    path.addRoundedRect(selectionRectFull().adjusted(penWidth, penWidth, -penWidth, -penWidth), roundness, roundness);
+    const qreal adjustment = 0.5 * penWidth; // Use same adjustments as Breeze strokedRect uses, to snap to pixelGrid.
+    path.addRoundedRect(selectionRectFull().adjusted(adjustment, adjustment, -adjustment, -adjustment), roundness, roundness);
     QColor backgroundColor{widget->palette().color(QPalette::Accent)};
     painter->setRenderHint(QPainter::Antialiasing);
     bool current = m_current && styleState & QStyle::State_Active;
@@ -658,12 +659,11 @@ void KItemListWidget::drawItemStyleOption(QPainter *painter, QWidget *widget, QS
     if (current) {
         QColor focusColor{widget->palette().color(QPalette::Accent)};
         focusColor = m_styleOption.palette.color(QPalette::Base).lightnessF() > 0.5 ? focusColor.darker(110) : focusColor.lighter(110);
-        focusColor.setAlphaF(m_selected || m_hovered ? 0.8 : 0.6);
+        focusColor.setAlphaF(m_selected || m_hovered ? 1.0 : 0.8);
         // Set the pen color lighter or darker depending on background color
         QPen pen{focusColor, penWidth};
         pen.setCosmetic(true);
-        painter->setPen(pen);
-        painter->drawPath(path);
+        painter->strokePath(path, pen);
     }
 }