UI: Dim hidden source items in source tree

Dims the items of hidden sources in the sources dock to make it more
obvious that they are not visible. Both the icon and the sources name
are affected.

UI/source-tree.cpp

@@ -61,7 +61,8 @@ SourceTreeItem::SourceTreeItem(SourceTree *tree_, OBSSceneItem sceneitem_)
 	OBSBasic *main = reinterpret_cast<OBSBasic *>(App()->GetMainWindow());
 	const char *id = obs_source_get_id(source);
 
-	QLabel *iconLabel = nullptr;
+	bool sourceVisible = obs_sceneitem_visible(sceneitem);
+
 	if (tree->iconsVisible) {
 		QIcon icon;
 
@@ -77,13 +78,14 @@ SourceTreeItem::SourceTreeItem(SourceTree *tree_, OBSSceneItem sceneitem_)
 		iconLabel = new QLabel();
 		iconLabel->setPixmap(pixmap);
 		iconLabel->setFixedSize(16, 16);
+		iconLabel->setEnabled(sourceVisible);
 		iconLabel->setStyleSheet("background: none");
 	}
 
 	vis = new VisibilityCheckBox();
 	vis->setSizePolicy(QSizePolicy::Maximum, QSizePolicy::Maximum);
 	vis->setFixedSize(16, 16);
-	vis->setChecked(obs_sceneitem_visible(sceneitem));
+	vis->setChecked(sourceVisible);
 	vis->setStyleSheet("background: none");
 	vis->setAccessibleName(QTStr("Basic.Main.Sources.Visibility"));
 	vis->setAccessibleDescription(
@@ -102,6 +104,7 @@ SourceTreeItem::SourceTreeItem(SourceTree *tree_, OBSSceneItem sceneitem_)
 	label->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Preferred);
 	label->setAlignment(Qt::AlignLeft | Qt::AlignVCenter);
 	label->setAttribute(Qt::WA_TranslucentBackground);
+	label->setEnabled(sourceVisible);
 
 #ifdef __APPLE__
 	vis->setAttribute(Qt::WA_LayoutUsesWidgetRect);
@@ -506,6 +509,10 @@ bool SourceTreeItem::eventFilter(QObject *object, QEvent *event)
 
 void SourceTreeItem::VisibilityChanged(bool visible)
 {
+	if (iconLabel) {
+		iconLabel->setEnabled(visible);
+	}
+	label->setEnabled(visible);
 	vis->setChecked(visible);
 }
 

UI/source-tree.hpp

@@ -62,6 +62,7 @@ public:
 private:
 	QSpacerItem *spacer = nullptr;
 	QCheckBox *expand = nullptr;
+	QLabel *iconLabel = nullptr;
 	VisibilityCheckBox *vis = nullptr;
 	LockedCheckBox *lock = nullptr;
 	QHBoxLayout *boxLayout = nullptr;