tui/views/layout_coord.go

package views

import "git.tordarus.net/Tordarus/tui"

// CoordLayout is a tui.Layout which places its children on predefined coordinates
type CoordLayout struct {
	tui.ViewTmpl
	views map[tui.View]tui.Dimension
}

var _ tui.Layout = &CoordLayout{}

func NewCoordLayout() *CoordLayout {
	return &CoordLayout{
		views: map[tui.View]tui.Dimension{},
	}
}

func (g *CoordLayout) Views() []tui.View {
	s := make([]tui.View, 0, len(g.views))
	for v := range g.views {
		s = append(s, v)
	}
	return s
}

// SetView places v at the given coordinates with the given dimensions.
// v will be added to g's children if not already added before
func (g *CoordLayout) SetView(v tui.View, x, y, width, height int) {
	g.views[v] = tui.Dimension{Point: tui.Point{X: x, Y: y}, Size: tui.Size{Width: width, Height: height}}
}

func (g *CoordLayout) Draw(buf *tui.ViewBuffer) {
	for v, d := range g.views {
		v.Draw(buf.Sub(d.X, d.Y, d.Width, d.Height))
	}
}

func (v *CoordLayout) Layout() (prefWidth, prefHeight int) {
	return -1, -1
}

func (g *CoordLayout) OnKeyPressed(event *tui.KeyEvent) (consumed bool) {
	for _, view := range g.Views() {
		if view.OnKeyPressed(event) {
			return true
		}
	}
	return false
}