修复单选按钮禁用时的样式问题 (#276)

qfluentwidgets/_rc/qss/dark/button.qss

@@ -200,7 +200,7 @@ RadioButton::indicator:checked:pressed {
 }
 
 RadioButton:disabled {
-    color: rgb(150, 150, 150);
+    color: rgba(255, 255, 255, 0.3628);
 }
 
 RadioButton::indicator:disabled {
@@ -208,6 +208,15 @@ RadioButton::indicator:disabled {
     background-color: transparent;
 }
 
+RadioButton::indicator:disabled:checked {
+    border: none;
+    background-color: qradialgradient(spread:pad, cx:0.5, cy:0.5, radius:0.5, fx:0.5, fy:0.5,
+            stop:0 rgb(0, 0, 0),
+            stop:0.5 rgb(0, 0, 0),
+            stop:0.6 rgba(255, 255, 255, 0.158),
+            stop:1 rgba(255, 255, 255, 0.158));
+}
+
 TransparentToolButton {
     background-color: transparent;
     border: none;

qfluentwidgets/_rc/qss/light/button.qss

@@ -205,7 +205,16 @@ RadioButton:disabled {
 
 RadioButton::indicator:disabled {
     border: 2px solid #bbbbbb;
-    background-color: rgba(0, 0, 0, 0);
+    background-color: transparent;
+}
+
+RadioButton::indicator:disabled:checked {
+    border: none;
+    background-color: qradialgradient(spread:pad, cx:0.5, cy:0.5, radius:0.5, fx:0.5, fy:0.5,
+            stop:0 rgb(255, 255, 255),
+            stop:0.5 rgb(255, 255, 255),
+            stop:0.6 rgba(0, 0, 0, 0.2169),
+            stop:1 rgba(0, 0, 0, 0.2169));
 }
 
 TransparentToolButton {

qfluentwidgets/components/widgets/scroll_bar.py

@@ -303,7 +303,7 @@ class ScrollBar(QWidget):
             else:
                 value = e.pos().x() - self._padding
 
-        self.setValue(int(value / self._slideLength() * self.maximum()))
+        self.setValue(int(value / max(self._slideLength(), 1) * self.maximum()))
         self.sliderPressed.emit()
 
     def mouseReleaseEvent(self, e):
@@ -318,7 +318,7 @@ class ScrollBar(QWidget):
             dv = e.pos().x() - self._pressedPos.x()
 
         # don't use `self.setValue()`, because it could be reimplemented
-        dv = int(dv / self._slideLength() * (self.maximum() - self.minimum()))
+        dv = int(dv / max(self._slideLength(), 1) * (self.maximum() - self.minimum()))
         ScrollBar.setValue(self, self.value() + dv)
 
         self._pressedPos = e.pos()