Removed `clickFunc()` entirely; replaced with lambda expression. Renamed `QShortcut` variable
to `defaultNew`,takeScreenshotShortcut` for clarity. as `QKeySequence::New` refers to the default "new document" shortcutEliminated redundant `QTimer::singleShot` function call,
which is {key CTRL}+{key N} on most systems. Eliminated redundant `QTimer::singleShot` function callas `animateClick()` emits all the necessary signals on its own.