feat: 添加ElaWidgetTool库

ElaWidgetTools/private/ElaDockWidgetPrivate.cpp

@@ -0,0 +1,21 @@
+#include "ElaDockWidgetPrivate.h"
+
+#include <QLinearGradient>
+
+#include "ElaDockWidget.h"
+#include "ElaDockWidgetTitleBar.h"
+ElaDockWidgetPrivate::ElaDockWidgetPrivate(QObject* parent)
+    : QObject{parent}
+{
+}
+
+ElaDockWidgetPrivate::~ElaDockWidgetPrivate()
+{
+}
+
+void ElaDockWidgetPrivate::onThemeModeChanged(ElaThemeType::ThemeMode themeMode)
+{
+    Q_Q(ElaDockWidget);
+    q->update();
+    _themeMode = themeMode;
+}