Class SlotGroupRegionMath

java.lang.Object

com.trevlar.menukit.core.SlotGroupRegionMath

@Internal
public final class SlotGroupRegionMath
extends Object

Pure coordinate resolver for SlotGroupContext regions. Post-§0042 split companion to MenuKit's RegionMath (which resolves MenuContext + HudContext regions).

Pure by design. No registry state, no Panel references, no per-frame side effects. Same shape as RegionMath — given explicit inputs (slot-group bounds, panel dimensions, stacking prefix), returns the panel's screen-space origin or Optional.empty() if the panel's extent exceeds the slot group's available space.

Lives in MenuKit: Containers because slot-group regions reference SlotGroupRegion (slot-group enum) and SlotGroupBounds (slot-group bounding rectangle) — slot-related types per §0042.

Method Summary

Modifier and Type	Method	Description
static int	availableSlotGroupWidth(SlotGroupRegion region, SlotGroupBounds b, int sw, int margin)	OUTER available width for a slot-group-anchored panel before it crosses the screen-edge margin (Pass 3).
static Optional<ScreenOrigin>	resolveSlotGroup(SlotGroupRegion region, SlotGroupBounds bounds, int pw, int ph, int prefix, int sw, int sh)	Resolves a SlotGroupContext region panel's origin.

Methods inherited from class Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Details

availableSlotGroupWidth

public static int availableSlotGroupWidth(SlotGroupRegion region,
 SlotGroupBounds b,
 int sw,
 int margin)

OUTER available width for a slot-group-anchored panel before it crosses the screen-edge margin (Pass 3). Mirrors RegionMath.availableMenuWidth(MenuRegion, ScreenBounds, int, int) exactly — same per-region anchor geometry — but anchored to the SlotGroupBounds rather than the menu frame, reusing RegionMath's shared growth-direction arithmetic so the budget math lives in one place.

resolveSlotGroup

public static Optional<ScreenOrigin> resolveSlotGroup(SlotGroupRegion region,
 SlotGroupBounds bounds,
 int pw,
 int ph,
 int prefix,
 int sw,
 int sh)

Resolves a SlotGroupContext region panel's origin. Anchors to the slot group's bounding rectangle (SlotGroupBounds) rather than the screen frame, but is otherwise identical to RegionMath.resolveMenu(MenuRegion, ScreenBounds, int, int, int, int, int) — same anchor semantics, same overflow cutoff, same RegionConstants.MENU_STACK_GAP spacing.

Bounds are computed per frame by SlotGroupPanelRegistry walking the slot list for the target category.