frontend: Add icon coloring for labels

Updates idian utils to also support QLabel widgets for icon coloring.

shared/qt/idian/include/Idian/StateEventFilter.cpp

@@ -17,10 +17,10 @@
 
 #include <Idian/StateEventFilter.hpp>
 #include <Idian/Utils.hpp>
+
 #include <QAbstractButton>
 #include <QFocusEvent>
-#include <QStyleOptionButton>
-#include <QTimer>
+#include <QLabel>
 
 namespace idian {
 StateEventFilter::StateEventFilter(idian::Utils *utils, QWidget *target) : QObject(target), target(target), utils(utils)
@@ -102,7 +102,13 @@ bool StateEventFilter::eventFilter(QObject *obj, QEvent *event)
 
 	if (updateIconColors) {
 		// Delay icon update
-		QTimer::singleShot(0, this, [this, widget]() { utils->applyColorToIcon(widget); });
+		if (QLabel *label = qobject_cast<QLabel *>(widget)) {
+			QMetaObject::invokeMethod(
+				this, [this, label]() { utils->applyColorToIcon(label); }, Qt::QueuedConnection);
+		} else if (QAbstractButton *button = qobject_cast<QAbstractButton *>(widget)) {
+			QMetaObject::invokeMethod(
+				this, [this, button]() { utils->applyColorToIcon(button); }, Qt::QueuedConnection);
+		}
 	}
 
 	return QObject::eventFilter(obj, event);

shared/qt/idian/include/Idian/Utils.cpp

@@ -20,13 +20,14 @@
 #include <Idian/StateEventFilter.hpp>
 
 #include <QAbstractButton>
+#include <QLabel>
 #include <QPainter>
 #include <QStyleOptionButton>
+#include <QStyleOptionFrame>
 
 namespace idian {
-void Utils::applyColorToIcon(QWidget *widget)
+void Utils::applyColorToIcon(QAbstractButton *button)
 {
-	QAbstractButton *button = qobject_cast<QAbstractButton *>(widget);
 	if (button && !button->icon().isNull()) {
 		// Filter is on a widget with an icon set, update its colors
 		QStyleOptionButton opt;
@@ -42,6 +43,19 @@ void Utils::applyColorToIcon(QWidget *widget)
 	}
 }
 
+void Utils::applyColorToIcon(QLabel *label)
+{
+	if (label && !label->pixmap().isNull()) {
+		QStyleOptionFrame opt;
+		opt.initFrom(label);
+
+		QColor color = opt.palette.color(QPalette::Text);
+		QPixmap tinted = recolorPixmap(label->pixmap(), color);
+
+		label->setPixmap(tinted);
+	}
+}
+
 QPixmap Utils::recolorPixmap(const QPixmap &src, const QColor &color)
 {
 	QImage img = src.toImage();

shared/qt/idian/include/Idian/Utils.hpp

@@ -21,6 +21,9 @@
 #include <QStyle>
 #include <QWidget>
 
+class QAbstractButton;
+class QLabel;
+
 namespace idian {
 
 // Helpers for OBS Idian widgets
@@ -114,7 +117,8 @@ public:
 		}
 	}
 
-	static void applyColorToIcon(QWidget *widget);
+	static void applyColorToIcon(QAbstractButton *button);
+	static void applyColorToIcon(QLabel *label);
 
 	static QPixmap recolorPixmap(const QPixmap &src, const QColor &color);