sync: from linuxdeepin/dtkgui

Synchronize source files from linuxdeepin/dtkgui.

Source-pull-request: linuxdeepin/dtkgui#220

src/kernel/dplatformhandle.cpp

@@ -588,9 +588,10 @@ static void initWindowRadius(QWindow *window)
         return;
 
     auto theme = DGuiApplicationHelper::instance()->systemTheme();
-    int radius = theme->windowRadius(18); //###(zccrs): 暂时在此处给窗口默认设置为18px的圆角
-
-    setWindowProperty(window, _windowRadius, radius);
+    if (theme->isValid()) {
+        int radius = theme->windowRadius(18); //###(zccrs): 暂时在此处给窗口默认设置为18px的圆角
+        setWindowProperty(window, _windowRadius, radius);
+    }
     // Qt::UniqueConnection will report a warning
     // to `unique connections require a pointer to member function of a QObject subclass`.
     const char *uniqueueConnectionFlag("_d_uniqueueConnectionFlag");
@@ -604,9 +605,9 @@ static void initWindowRadius(QWindow *window)
     }
 }
 
-class Q_DECL_HIDDEN CreatorWindowEventFile : public QObject {
+class Q_DECL_HIDDEN WindowCreateEventFilter : public QObject {
 public:
-    CreatorWindowEventFile(QObject *par= nullptr): QObject(par){}
+    WindowCreateEventFilter(QObject *par= nullptr) : QObject(par){}
 
 public:
     bool eventFilter(QObject *watched, QEvent *event) override {
@@ -657,7 +658,7 @@ bool DPlatformHandle::setEnabledNoTitlebarForWindow(QWindow *window, bool enable
             if (window->handle()) {
                 initWindowRadius(window);
             } else {
-                window->installEventFilter(new CreatorWindowEventFile(window));
+                window->installEventFilter(new WindowCreateEventFilter(window));
             }
         }