[SiteIcon] Support :pressed state for style sheets

src/lib/navigation/siteicon.cpp

@@ -78,8 +78,12 @@ void SiteIcon::iconClicked()
         return;
     }
 
+    setDown(true);
+
     SiteInfoWidget* info = new SiteInfoWidget(m_window);
     info->showAt(parentWidget());
+
+    connect(info, SIGNAL(destroyed()), this, SLOT(popupClosed()));
 }
 
 void SiteIcon::updateIcon()
@@ -87,6 +91,11 @@ void SiteIcon::updateIcon()
     ToolButton::setIcon(m_icon);
 }
 
+void SiteIcon::popupClosed()
+{
+    setDown(false);
+}
+
 void SiteIcon::contextMenuEvent(QContextMenuEvent* e)
 {
     // Prevent propagating to LocationBar

src/lib/navigation/siteicon.h

@@ -42,6 +42,8 @@ private slots:
     void iconClicked();
     void updateIcon();
 
+    void popupClosed();
+
 private:
     void contextMenuEvent(QContextMenuEvent* e);
     void mousePressEvent(QMouseEvent* e);

src/lib/tools/toolbutton.cpp

@@ -137,11 +137,6 @@ void ToolButton::mousePressEvent(QMouseEvent* e)
         return;
     }
 
-
-    if (e->buttons() == Qt::MiddleButton) {
-        setDown(true);
-    }
-
     QToolButton::mousePressEvent(e);
 }
 
@@ -160,7 +155,6 @@ void ToolButton::mouseReleaseEvent(QMouseEvent* e)
     }
 
     QToolButton::mouseReleaseEvent(e);
-    setDown(false);
 }
 
 void ToolButton::mouseDoubleClickEvent(QMouseEvent* e)