overlay_backdrop.go RawHistoryFolder

1package daemon
2
3import (
4	renderer "github.com/bnema/vev-vt"
5	"github.com/bnema/vev/internal/domain"
6	themeui "github.com/bnema/vev/internal/usecase/theme"
7)
8
9// applyOverlayBackdrop dims every cell already composed into the complete
10// renderer frame. Modal composition calls it immediately before painting each
11// active layer so bars, panes, toasts, and lower overlays share one backdrop.
12func applyOverlayBackdrop(frame renderer.Frame, theme themeui.Theme) {
13	dimFrameRect(frame, domain.Rect{Width: frame.Width, Height: frame.Height}, theme)
14}
15
16func dimFrameRect(frame renderer.Frame, rect domain.Rect, theme themeui.Theme) {
17	dimmer := themeui.NewDimmer(theme)
18	x0 := max(rect.X, 0)
19	y0 := max(rect.Y, 0)
20	x1 := min(rect.X+rect.Width, frame.Width)
21	y1 := min(rect.Y+rect.Height, frame.Height)
22	for y := y0; y < y1; y++ {
23		for x := x0; x < x1; x++ {
24			cell := frame.At(x, y)
25			cell.Style = dimmer.Dim(cell.Style)
26			frame.Set(x, y, cell)
27		}
28	}
29}