motion_preferences.hpp File Reference

System-level reduced-motion preferences. More...

#include <functional>
#include <mutex>
#include <optional>
#include <string>
#include <string_view>

Go to the source code of this file.

Classes
class	pulp::view::MotionPreferences
	Process-wide reduced-motion preference tracker. More...

Namespaces
namespace	pulp
namespace	pulp::view
	Hover-cursor tracking for platform window hosts.

Enumerations
enum class	pulp::view::MotionPolicy { pulp::view::Full , pulp::view::Reduced , pulp::view::Off }
	Reduced-motion policy. More...

Functions
float	pulp::view::apply_motion_policy_to_duration (float configured_seconds)
	Apply the current MotionPolicy to a configured duration.
bool	pulp::view::motion_policy_is_off ()
	Returns true when the current policy says "do not animate" — i.e.
const char *	pulp::view::motion_policy_to_string (MotionPolicy p)
	Returns the current policy string for fixture headers.
MotionPolicy	pulp::view::motion_policy_from_string (const std::string_view s)
	Parse a policy string (case-sensitive). Returns Full on unknown.

Detailed Description

System-level reduced-motion preferences.

Sibling of AppearanceTracker: reads the OS accessibility setting on first use, exposes a polling + callback surface, and accepts a test override that wins over the OS value. Animation primitives (Tween, ValueAnimation, TransitionSpec, AnimatorSet) read this at construction / reset to honor the policy:

• Full — animate at the configured duration (default).
• Reduced — scale the configured duration by duration_scale.
• Off — jump straight to the target value; emit no intermediate tween samples.

Off by default in the sense that nothing reads it unless an animation primitive starts; the singleton lives behind current().