func (e *Editor) compositeRecursively(v *view.Tree) {
if leaf := v.Leaf(); leaf != nil {
buf := v.Leaf().UIBuf()
e.uiBuf.Blit(v.Rect, 0, 0, &buf)
return
}
if left := v.Left(); left != nil {
e.compositeRecursively(left)
right := v.Right()
e.compositeRecursively(right)
splitter := right.Rect
splitter.X -= 1
splitter.Width = 1
uiBuf := e.uiBuf
uiBuf.Fill(splitter, termbox.Cell{
Fg: termbox.AttrReverse,
Bg: termbox.AttrReverse,
Ch: '│',
})
uiBuf.Set(splitter.X, splitter.Y+splitter.Height-1,
termbox.Cell{
Fg: termbox.AttrReverse,
Bg: termbox.AttrReverse,
Ch: '┴',
})
} else {
e.compositeRecursively(v.Top())
e.compositeRecursively(v.Bottom())
}
}
func (e *Editor) fixEdges(v *view.Tree) {
var x, y int
var cell *termbox.Cell
if leaf := v.Leaf(); leaf != nil {
y = v.Y + v.Height - 1
x = v.X - 1
cell = e.uiBuf.Get(x, y)
if cell != nil {
switch cell.Ch {
case '│':
cell.Ch = '├'
case '┤':
cell.Ch = '┼'
}
}
x = v.X + v.Width
cell = e.uiBuf.Get(x, y)
if cell != nil {
switch cell.Ch {
case '│':
cell.Ch = '┤'
case '├':
cell.Ch = '┼'
}
}
return
}
if left := v.Left(); left != nil {
right := v.Right()
x = right.X - 1
y = right.Y - 1
cell = e.uiBuf.Get(x, y)
if cell != nil {
switch cell.Ch {
case '─':
cell.Ch = '┬'
case '┴':
cell.Ch = '┼'
}
}
e.fixEdges(left)
e.fixEdges(right)
} else {
e.fixEdges(v.Top())
e.fixEdges(v.Bottom())
}
}