Add action to switch preview scene

src/macro-action-preview-scene.cpp

@@ -0,0 +1,88 @@
+#include "headers/macro-action-preview-scene.hpp"
+#include "headers/advanced-scene-switcher.hpp"
+#include "headers/utility.hpp"
+
+const std::string MacroActionPreviewScene::id = "preview_scene";
+
+bool MacroActionPreviewScene::_registered = MacroActionFactory::Register(
+	MacroActionPreviewScene::id,
+	{MacroActionPreviewScene::Create, MacroActionPreviewSceneEdit::Create,
+	 "AdvSceneSwitcher.action.previewScene"});
+
+bool MacroActionPreviewScene::PerformAction()
+{
+	auto s = obs_weak_source_get_source(_scene.GetScene());
+	obs_frontend_set_current_preview_scene(s);
+	obs_source_release(s);
+	return true;
+}
+
+void MacroActionPreviewScene::LogAction()
+{
+	vblog(LOG_INFO, "set preview scene to \"%s\"",
+	      _scene.ToString().c_str());
+}
+
+bool MacroActionPreviewScene::Save(obs_data_t *obj)
+{
+	MacroAction::Save(obj);
+	_scene.Save(obj);
+	return true;
+}
+
+bool MacroActionPreviewScene::Load(obs_data_t *obj)
+{
+	MacroAction::Load(obj);
+	_scene.Load(obj);
+	const char *sourceName = obs_data_get_string(obj, "source");
+	return true;
+}
+
+std::string MacroActionPreviewScene::GetShortDesc()
+{
+	return _scene.ToString();
+}
+
+MacroActionPreviewSceneEdit::MacroActionPreviewSceneEdit(
+	QWidget *parent, std::shared_ptr<MacroActionPreviewScene> entryData)
+	: QWidget(parent)
+{
+	_scenes = new SceneSelectionWidget(window(), false, false, false);
+
+	QWidget::connect(_scenes, SIGNAL(SceneChanged(const SceneSelection &)),
+			 this, SLOT(SceneChanged(const SceneSelection &)));
+
+	QHBoxLayout *mainLayout = new QHBoxLayout;
+	std::unordered_map<std::string, QWidget *> widgetPlaceholders = {
+		{"{{scenes}}", _scenes},
+	};
+	placeWidgets(
+		obs_module_text("AdvSceneSwitcher.action.previewScene.entry"),
+		mainLayout, widgetPlaceholders);
+	setLayout(mainLayout);
+
+	_entryData = entryData;
+	UpdateEntryData();
+	_loading = false;
+}
+
+void MacroActionPreviewSceneEdit::UpdateEntryData()
+{
+	if (!_entryData) {
+		return;
+	}
+
+	_scenes->SetScene(_entryData->_scene);
+}
+
+void MacroActionPreviewSceneEdit::SceneChanged(const SceneSelection &s)
+{
+	if (_loading || !_entryData) {
+		return;
+	}
+
+	std::lock_guard<std::mutex> lock(switcher->m);
+	_entryData->_scene = s;
+	emit HeaderInfoChanged(
+		QString::fromStdString(_entryData->GetShortDesc()));
+}