dividers.go RawHistoryFolder

1package layout
2
3import "github.com/bnema/vev/internal/domain"
4
5// Divider is the geometry of a single gap between two sibling panes in a Split
6// node. Dir mirrors the owning Split's Dir: Horizontal produces a
7// 1-column-wide vertical divider rect; Vertical produces a 1-row-high
8// horizontal divider rect.
9type Divider struct {
10	Rect domain.Rect
11	Dir  SplitDir
12}
13
14// SolveWithDividers behaves like Solve but also returns the gaps between
15// sibling panes. Both come from the same traversal, so a divider can never sit
16// anywhere but in the gap Solve left for it. Leaf and Stack nodes contribute no
17// dividers.
18func SolveWithDividers(root *Node, area domain.Rect) ([]Placement, []Divider, bool) {
19	return solveArea(root, area, true)
20}
21
22// dividerBetween returns the one-cell gap splitChildRects left after prev
23// inside parent.
24func dividerBetween(dir SplitDir, parent, prev domain.Rect) Divider {
25	if dir == Horizontal {
26		return Divider{Rect: domain.Rect{X: prev.X + prev.Width, Y: parent.Y, Width: 1, Height: parent.Height}, Dir: Horizontal}
27	}
28	return Divider{Rect: domain.Rect{X: parent.X, Y: prev.Y + prev.Height, Width: parent.Width, Height: 1}, Dir: Vertical}
29}