Switch QPushButton to QToolButton

This will be more consistent with the widget styles used throughout OBS
and solves a few layout issues

lib/utils/list-controls.cpp

@@ -0,0 +1,44 @@
+#include "list-controls.hpp"
+#include "obs-module-helper.hpp"
+#include "ui-helpers.hpp"
+
+#include <QLayout>
+#include <QToolButton>
+
+namespace advss {
+
+ListControls::ListControls(QWidget *parent, bool reorder) : QToolBar(parent)
+{
+	setObjectName("listControls");
+	setStyleSheet("#listControls { background-color: transparent; }");
+
+	setIconSize({16, 16});
+
+	AddActionHelper("addIconSmall", "AdvSceneSwitcher.listControls.add",
+			[this]() { Add(); });
+	AddActionHelper("removeIconSmall",
+			"AdvSceneSwitcher.listControls.remove",
+			[this]() { Remove(); });
+
+	if (reorder) {
+		addSeparator();
+		AddActionHelper("upArrowIconSmall",
+				"AdvSceneSwitcher.listControls.up",
+				[this]() { Up(); });
+		AddActionHelper("downArrowIconSmall",
+				"AdvSceneSwitcher.listControls.down",
+				[this]() { Down(); });
+	}
+}
+
+void ListControls::AddActionHelper(const char *theme, const char *tooltip,
+				   const std::function<void()> &signal)
+{
+	auto button = new QToolButton(this);
+	button->setToolTip(obs_module_text(tooltip));
+	button->setProperty("themeID", QVariant(QString(theme)));
+	auto action = addWidget(button);
+	button->connect(button, &QToolButton::clicked, this, signal);
+}
+
+} // namespace advss