使主题色依照DDE主题色改变

因为AUTOMOC不会在编译主程序的时候再对插件接口类进行MOC，所以需要在主程序内加一份一模一样的插件接口类定义。

inc/dtk/spkdtkplugin.h

@@ -3,12 +3,17 @@
 
 #include <QWidget>
 
-class SpkDtkPlugin
+class SpkDtkPlugin : public QObject
 {
+    Q_OBJECT
   public:
     virtual ~SpkDtkPlugin() = default;
-
+    virtual void Initialize() = 0;
     virtual void addWindow(QWidget* w, QObject* parent) = 0;
+    virtual QColor GetAccentColor() = 0;
+
+  signals:
+    void AccentColorChanged(QColor);
 };
 QT_BEGIN_NAMESPACE
 Q_DECLARE_INTERFACE(SpkDtkPlugin, "org.spark-store.client.dtkplugin")

inc/spkui_general.h

@@ -9,7 +9,7 @@
 #include <QSize>
 #include <QColor>
 
-#include "dtkplugin/spkdtkplugin.h"
+#include "dtk/spkdtkplugin.h"
 
 namespace SpkUi
 {
@@ -19,6 +19,19 @@ namespace SpkUi
   constexpr int StackTraceArraySize = 64;
   constexpr const char * const StoreIconName = "spark-store";
 
+  class UiMetaObject : public QObject
+  {
+      Q_OBJECT
+    private:
+      static UiMetaObject *sGlobalInstance;
+    public:
+      UiMetaObject() {}
+      UiMetaObject *Instance() {return nullptr;} //FIXME!!
+    public slots:
+      void SetAccentColor(QColor);
+  };
+
+  extern UiMetaObject SpkUiMetaObject;
   extern SpkUiStyle CurrentStyle;
   extern QString StylesheetBase, CurrentStylesheet;
   extern QColor ColorLine, ColorBack;