tachyon::LabelGroupSubsystem Class Reference

Labels and DragLabels in a label group share a width; dragging any label's right edge resizes them all. More...

#include <gui_controls/subsystems/gui_label_group_subsystem.h>

Classes
struct	State
	State of one label group, kept across frames by group ID. More...

Public Member Functions
	LabelGroupSubsystem (FramePipeline &frame, ElementStorage &elementStorage, GUIStateManager &guiStateManager, GUITheme &theme)
void	BeginGroup (tachyon::ID id, int32_t defaultWidth, int32_t minWidth, int32_t maxWidth, bool resizable=true)
	Opens group id at the current nesting depth; widths are CSS px, and defaultWidth applies only when the group is new.
void	EndGroup ()
	Closes the innermost group.
State *	GetActiveGroup ()
	The innermost group when it was opened at the current nesting depth, else nullptr.
void	AddDragger (tachyon::ElementRef labelRef)
	Adds a label to the innermost group and draws its resize edge; a group must be open.
bool	IsBalanced () const
	True iff every BeginGroup was matched by EndGroup.

Detailed Description

Labels and DragLabels in a label group share a width; dragging any label's right edge resizes them all.

Per-group state persists across frames, keyed by group ID.

OnPreConstruct -> reset transient per-group fields OnPostConstruct -> finalize edge state once all labels have emitted

Constructor & Destructor Documentation

LabelGroupSubsystem()

tachyon::LabelGroupSubsystem::LabelGroupSubsystem	(	FramePipeline &	frame,
		ElementStorage &	elementStorage,
		GUIStateManager &	guiStateManager,
		GUITheme &	theme )

Member Function Documentation

BeginGroup()

void tachyon::LabelGroupSubsystem::BeginGroup	(	tachyon::ID	id,
		int32_t	defaultWidth,
		int32_t	minWidth,
		int32_t	maxWidth,
		bool	resizable = true )

Opens group id at the current nesting depth; widths are CSS px, and defaultWidth applies only when the group is new.

Called by GUIApplication's label-group methods.

EndGroup()

void tachyon::LabelGroupSubsystem::EndGroup

(

)

Closes the innermost group.

GetActiveGroup()

State * tachyon::LabelGroupSubsystem::GetActiveGroup

(

)

The innermost group when it was opened at the current nesting depth, else nullptr.

AddDragger()

void tachyon::LabelGroupSubsystem::AddDragger

(

tachyon::ElementRef

labelRef

)

Adds a label to the innermost group and draws its resize edge; a group must be open.

IsBalanced()

bool tachyon::LabelGroupSubsystem::IsBalanced ( ) const

inline

True iff every BeginGroup was matched by EndGroup.

---

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

• gui_controls/subsystems/gui_label_group_subsystem.h