func drawBox(s tcell.Screen, x1, y1, x2, y2 int, style tcell.Style, r rune) {
if y2 < y1 {
y1, y2 = y2, y1
}
if x2 < x1 {
x1, x2 = x2, x1
}
for col := x1; col <= x2; col++ {
s.SetContent(col, y1, tcell.RuneHLine, nil, style)
s.SetContent(col, y2, tcell.RuneHLine, nil, style)
}
for row := y1 + 1; row < y2; row++ {
s.SetContent(x1, row, tcell.RuneVLine, nil, style)
s.SetContent(x2, row, tcell.RuneVLine, nil, style)
}
if y1 != y2 && x1 != x2 {
// Only add corners if we need to
s.SetContent(x1, y1, tcell.RuneULCorner, nil, style)
s.SetContent(x2, y1, tcell.RuneURCorner, nil, style)
s.SetContent(x1, y2, tcell.RuneLLCorner, nil, style)
s.SetContent(x2, y2, tcell.RuneLRCorner, nil, style)
}
for row := y1 + 1; row < y2; row++ {
for col := x1 + 1; col < x2; col++ {
s.SetContent(col, row, r, nil, style)
}
}
}
func emitStr(s tcell.Screen, x, y int, style tcell.Style, str string) {
for _, c := range str {
var comb []rune
w := runewidth.RuneWidth(c)
if w == 0 {
comb = []rune{c}
c = ' '
w = 1
}
s.SetContent(x, y, c, comb, style)
x += w
}
}
func drawSelect(s tcell.Screen, x1, y1, x2, y2 int, sel bool) {
if y2 < y1 {
y1, y2 = y2, y1
}
if x2 < x1 {
x1, x2 = x2, x1
}
for row := y1; row <= y2; row++ {
for col := x1; col <= x2; col++ {
mainc, combc, style, width := s.GetContent(col, row)
if style == tcell.StyleDefault {
style = defStyle
}
style = style.Reverse(sel)
s.SetContent(col, row, mainc, combc, style)
col += width - 1
}
}
}
func puts(s tcell.Screen, style tcell.Style, x, y int, str string) {
i := 0
var deferred []rune
dwidth := 0
for _, r := range str {
switch runewidth.RuneWidth(r) {
case 0:
if len(deferred) == 0 {
deferred = append(deferred, ' ')
dwidth = 1
}
case 1:
if len(deferred) != 0 {
s.SetContent(x+i, y, deferred[0], deferred[1:], style)
i += dwidth
}
deferred = nil
dwidth = 1
case 2:
if len(deferred) != 0 {
s.SetContent(x+i, y, deferred[0], deferred[1:], style)
i += dwidth
}
deferred = nil
dwidth = 2
}
deferred = append(deferred, r)
}
if len(deferred) != 0 {
s.SetContent(x+i, y, deferred[0], deferred[1:], style)
i += dwidth
}
}