add cmake option DISABLE_UPDATE_CHECKER (#2793)

* add cmake option DISABLE_UPDATE_CHECKER

* add cmake option DISABLE_UPDATE_CHECKER to compile out
updatechecker

* format code use `clang-format -i $(git ls-files "*.cpp" "*.h")`

* fallback wrong code format

* replace `add_definitions` with `add_compile_definitions`

src/widgets/capture/capturewidget.cpp

@@ -29,7 +29,6 @@
 #include "src/widgets/orientablepushbutton.h"
 #include "src/widgets/panel/sidepanelwidget.h"
 #include "src/widgets/panel/utilitypanel.h"
-#include "src/widgets/updatenotificationwidget.h"
 #include <QApplication>
 #include <QDateTime>
 #include <QDebug>
@@ -42,6 +41,10 @@
 #include <QShortcut>
 #include <draggablewidgetmaker.h>
 
+#if !defined(DISABLE_UPDATE_CHECKER)
+#include "src/widgets/updatenotificationwidget.h"
+#endif
+
 #define MOUSE_DISTANCE_TO_START_MOVING 3
 
 // CaptureWidget is the main component used to capture the screen. It contains
@@ -64,7 +67,9 @@ CaptureWidget::CaptureWidget(const CaptureRequest& req,
   , m_toolWidget(nullptr)
   , m_colorPicker(nullptr)
   , m_lastMouseWheel(0)
+#if !defined(DISABLE_UPDATE_CHECKER)
   , m_updateNotificationWidget(nullptr)
+#endif
   , m_activeToolIsMoved(false)
   , m_panel(nullptr)
   , m_sidePanel(nullptr)
@@ -1127,6 +1132,7 @@ void CaptureWidget::initPanel()
     m_panel->fillCaptureTools(m_captureToolObjects.captureToolObjects());
 }
 
+#if !defined(DISABLE_UPDATE_CHECKER)
 void CaptureWidget::showAppUpdateNotification(const QString& appLatestVersion,
                                               const QString& appLatestUrl)
 {
@@ -1159,6 +1165,7 @@ void CaptureWidget::showAppUpdateNotification(const QString& appLatestVersion,
     makeChild(m_updateNotificationWidget);
     m_updateNotificationWidget->show();
 }
+#endif
 
 void CaptureWidget::initSelection()
 {