service/tray: mostly complete StatusNotifierItem implementation

Notably missing dbusmenu which makes it actually useful.

src/core/generation.cpp

@@ -33,6 +33,8 @@ EngineGeneration::EngineGeneration(QmlScanner scanner)
 	this->engine.setIncubationController(&this->delayedIncubationController);
 
 	this->engine.addImageProvider("icon", new IconImageProvider());
+
+	QuickshellPlugin::runConstructGeneration(*this);
 }
 
 EngineGeneration::~EngineGeneration() {

src/core/iconimageprovider.cpp

@@ -1,8 +1,9 @@
 #include "iconimageprovider.hpp"
 
 #include <qicon.h>
-#include <qlogging.h>
 #include <qpixmap.h>
+#include <qsize.h>
+#include <qstring.h>
 
 QPixmap
 IconImageProvider::requestPixmap(const QString& id, QSize* size, const QSize& requestedSize) {

src/core/plugin.cpp

@@ -3,6 +3,8 @@
 
 #include <qvector.h> // NOLINT (what??)
 
+#include "generation.hpp"
+
 static QVector<QuickshellPlugin*> plugins; // NOLINT
 
 void QuickshellPlugin::registerPlugin(QuickshellPlugin& plugin) { plugins.push_back(&plugin); }
@@ -26,6 +28,12 @@ void QuickshellPlugin::initPlugins() {
 	}
 }
 
+void QuickshellPlugin::runConstructGeneration(EngineGeneration& generation) {
+	for (QuickshellPlugin* plugin: plugins) {
+		plugin->constructGeneration(generation);
+	}
+}
+
 void QuickshellPlugin::runOnReload() {
 	for (QuickshellPlugin* plugin: plugins) {
 		plugin->onReload();

src/core/plugin.hpp

@@ -3,6 +3,8 @@
 #include <qcontainerfwd.h>
 #include <qfunctionpointer.h>
 
+class EngineGeneration;
+
 class QuickshellPlugin {
 public:
 	QuickshellPlugin() = default;
@@ -15,10 +17,12 @@ public:
 	virtual bool applies() { return true; }
 	virtual void init() {}
 	virtual void registerTypes() {}
+	virtual void constructGeneration(EngineGeneration& generation) {} // NOLINT
 	virtual void onReload() {}
 
 	static void registerPlugin(QuickshellPlugin& plugin);
 	static void initPlugins();
+	static void runConstructGeneration(EngineGeneration& generation);
 	static void runOnReload();
 };