pulp::view::ComponentDragger Class Reference

#include <component_dragger.hpp>

Public Member Functions
	ComponentDragger ()=default
void	start_dragging (View &view, Point mouse_local)
	Begin a drag gesture.
void	drag_view (View &view, Point mouse_local)
	Continue a drag gesture.
void	end_dragging ()
	End the gesture.
void	set_constrain_to_parent (bool yes)
	When true (the default), drag_view clamps the dragged view's origin so it stays fully inside the parent's local bounds.
bool	constrain_to_parent () const
bool	is_dragging () const
Point	mouse_start () const
	Mouse-local press position captured at start_dragging.
Rect	bounds_start () const
	Dragged view's bounds captured at start_dragging.

Public Attributes
std::function< void(Rect)>	on_drag
	Optional callbacks for tests / app glue.
std::function< void()>	on_end

Constructor & Destructor Documentation

ComponentDragger()

pulp::view::ComponentDragger::ComponentDragger ( )

default

Member Function Documentation

bounds_start()

Rect pulp::view::ComponentDragger::bounds_start ( ) const

inline

Dragged view's bounds captured at start_dragging.

constrain_to_parent()

bool pulp::view::ComponentDragger::constrain_to_parent ( ) const

inline

drag_view()

void pulp::view::ComponentDragger::drag_view ( View & view, Point mouse_local )

inline

Continue a drag gesture.

Moves the view's bounds so the press position stays under the cursor. Honors constrain_to_parent(). No-op when not currently dragging.

end_dragging()

void pulp::view::ComponentDragger::end_dragging ( )

inline

End the gesture.

Subsequent drag_view calls become no-ops until the next start_dragging.

is_dragging()

bool pulp::view::ComponentDragger::is_dragging ( ) const

inline

mouse_start()

Point pulp::view::ComponentDragger::mouse_start ( ) const

inline

Mouse-local press position captured at start_dragging.

set_constrain_to_parent()

void pulp::view::ComponentDragger::set_constrain_to_parent ( bool yes )

inline

When true (the default), drag_view clamps the dragged view's origin so it stays fully inside the parent's local bounds.

start_dragging()

void pulp::view::ComponentDragger::start_dragging ( View & view, Point mouse_local )

inline

Begin a drag gesture.

mouse_local is the press position in the dragged view's LOCAL coordinate space (i.e. the same pos value you'd hand to View::on_mouse_down).

Member Data Documentation

on_drag

std::function<void(Rect)> pulp::view::ComponentDragger::on_drag

Optional callbacks for tests / app glue.

on_end

std::function<void()> pulp::view::ComponentDragger::on_end

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The documentation for this class was generated from the following file:

• /home/runner/work/pulp/pulp/core/view/include/pulp/view/component_dragger.hpp