fix(macos): use show() instead of showFullScreen() to avoid desktop animation

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

Author: Mitnitsky

src/core/flameshot.cpp

@@ -131,8 +131,7 @@ CaptureWidget* Flameshot::gui(const CaptureRequest& req)
 #ifdef Q_OS_WIN
         m_captureWindow->show();
 #elif defined(Q_OS_MACOS)
-        // In "Emulate fullscreen mode"
-        m_captureWindow->showFullScreen();
+        m_captureWindow->show();
         m_captureWindow->activateWindow();
         m_captureWindow->raise();
 #else

src/widgets/capture/capturewidget.cpp

@@ -164,6 +164,8 @@ CaptureWidget::CaptureWidget(const CaptureRequest& req,
             windowHandle()->setScreen(selectedScreen);
         }
 #elif defined(Q_OS_MACOS)
+        setWindowFlags(Qt::WindowStaysOnTopHint | Qt::FramelessWindowHint |
+                       Qt::Tool);
         QScreen* currentScreen = QGuiAppCurrentScreen().currentScreen();
         move(currentScreen->geometry().x(), currentScreen->geometry().y());
         resize(currentScreen->size());