Antialias Click-Effects on Buttons (#4473)

Co-authored-by: pajlada <rasmus.karlsson@pajlada.com>

CHANGELOG.md

@@ -6,6 +6,7 @@
 - Minor: Added `/shield` and `/shieldoff` commands to toggle shield mode. (#4580)
 - Bugfix: Fixed the menu warping on macOS on Qt6. (#4595)
 - Bugfix: Fixed link tooltips not showing unless the thumbnail setting was enabled. (#4597)
+- Bugfix: Fixed click effects on buttons not being antialiased. (#4473)
 - Dev: Added the ability to control the `followRedirect` mode for requests. (#4594)
 
 ## 2.4.3

src/widgets/helper/Button.cpp

@@ -203,17 +203,12 @@ void Button::fancyPaint(QPainter &painter)
 
     for (auto effect : this->clickEffects_)
     {
-        QRadialGradient gradient(effect.position.x(), effect.position.y(),
-                                 effect.progress * qreal(width()) * 2,
-                                 effect.position.x(), effect.position.y());
-
-        gradient.setColorAt(0, QColor(c.red(), c.green(), c.blue(),
-                                      int((1 - effect.progress) * 95)));
-        gradient.setColorAt(0.9999, QColor(c.red(), c.green(), c.blue(),
-                                           int((1 - effect.progress) * 95)));
-        gradient.setColorAt(1, QColor(c.red(), c.green(), c.blue(), int(0)));
-
-        painter.fillRect(this->rect(), gradient);
+        painter.setPen(Qt::NoPen);
+        painter.setBrush(QColor(c.red(), c.green(), c.blue(),
+                                int((1 - effect.progress) * 95)));
+        painter.drawEllipse(QPointF(effect.position),
+                            effect.progress * qreal(width()) * 2,
+                            effect.progress * qreal(width()) * 2);
     }
 }