Adjusting operating system posture for a touch-enabled computing device based on user input modality signals

Techniques for adjusting a posture of an operating system mode for a touch-enabled computing device based on combinations of user preferences and user input modality signals. Various adjustments to the posture of the operating system mode do not impact whether particular user interface elements are present but rather alter characteristics with which these particular user interface elements are rendered. Posture adjustments to an operating system mode occur based on combinations user input modality signals and user preferences not to enter another mode in which particular user interface elements are no longer displayed within a task bar along a peripheral edge. An object of designing an operating system mode to have multiple different postures with common user interface elements displayed in the task bar while adjusting the characteristics thereof is to preserve the user familiarity across postures while optimizing graphical layouts to accommodate for a current user input modality.