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|
package display
import (
runewidth "github.com/mattn/go-runewidth"
"github.com/zyedidia/tcell/v2"
"github.com/zyedidia/micro/v2/internal/buffer"
"github.com/zyedidia/micro/v2/internal/config"
"github.com/zyedidia/micro/v2/internal/screen"
"github.com/zyedidia/micro/v2/internal/util"
)
type TabWindow struct {
Names []string
active int
Y int
Width int
hscroll int
}
func NewTabWindow(w int, y int) *TabWindow {
tw := new(TabWindow)
tw.Width = w
tw.Y = y
return tw
}
func (w *TabWindow) Resize(width, height int) {
w.Width = width
}
func (w *TabWindow) LocFromVisual(vloc buffer.Loc) int {
x := -w.hscroll
for i, n := range w.Names {
x++
s := util.CharacterCountInString(n)
if vloc.Y == w.Y && vloc.X < x+s {
return i
}
x += s
x += 3
if x >= w.Width {
break
}
}
return -1
}
func (w *TabWindow) Scroll(amt int) {
w.hscroll += amt
s := w.TotalSize()
w.hscroll = util.Clamp(w.hscroll, 0, s-w.Width)
if s-w.Width <= 0 {
w.hscroll = 0
}
}
func (w *TabWindow) TotalSize() int {
sum := 2
for _, n := range w.Names {
sum += runewidth.StringWidth(n) + 4
}
return sum - 4
}
func (w *TabWindow) Active() int {
return w.active
}
func (w *TabWindow) SetActive(a int) {
w.active = a
x := 2
s := w.TotalSize()
for i, n := range w.Names {
c := util.CharacterCountInString(n)
if i == a {
if x+c >= w.hscroll+w.Width {
w.hscroll = util.Clamp(x+c+1-w.Width, 0, s-w.Width)
} else if x < w.hscroll {
w.hscroll = util.Clamp(x-4, 0, s-w.Width)
}
break
}
x += c + 4
}
if s-w.Width <= 0 {
w.hscroll = 0
}
}
func (w *TabWindow) Display() {
x := -w.hscroll
done := false
globalTabReverse := config.GetGlobalOption("tabreverse").(bool)
globalTabHighlight := config.GetGlobalOption("tabhighlight").(bool)
// xor of reverse and tab highlight to get tab character (as in filename and surrounding characters) reverse state
tabCharHighlight := (globalTabReverse || globalTabHighlight) && !(globalTabReverse && globalTabHighlight)
reverseStyles := func(reverse bool) (tcell.Style, tcell.Style) {
tabBarStyle := config.DefStyle.Reverse(reverse)
if style, ok := config.Colorscheme["tabbar"]; ok {
tabBarStyle = style
}
tabBarActiveStyle := tabBarStyle
if style, ok := config.Colorscheme["tabbar.active"]; ok {
tabBarActiveStyle = style
}
return tabBarStyle, tabBarActiveStyle
}
draw := func(r rune, n int, active bool, reversed bool) {
tabBarStyle, tabBarActiveStyle := reverseStyles(reversed)
style := tabBarStyle
if active {
style = tabBarActiveStyle
}
for i := 0; i < n; i++ {
rw := runewidth.RuneWidth(r)
for j := 0; j < rw; j++ {
c := r
if j > 0 {
c = ' '
}
if x == w.Width-1 && !done {
screen.SetContent(w.Width-1, w.Y, '>', nil, tabBarStyle)
x++
break
} else if x == 0 && w.hscroll > 0 {
screen.SetContent(0, w.Y, '<', nil, tabBarStyle)
} else if x >= 0 && x < w.Width {
screen.SetContent(x, w.Y, c, nil, style)
}
x++
}
}
}
for i, n := range w.Names {
if i == w.active {
draw('[', 1, true, tabCharHighlight)
} else {
draw(' ', 1, false, tabCharHighlight)
}
for _, c := range n {
draw(c, 1, i == w.active, tabCharHighlight)
}
if i == len(w.Names)-1 {
done = true
}
if i == w.active {
draw(']', 1, true, tabCharHighlight)
draw(' ', 2, true, globalTabReverse)
} else {
draw(' ', 1, false, tabCharHighlight)
draw(' ', 2, false, globalTabReverse)
}
if x >= w.Width {
break
}
}
if x < w.Width {
draw(' ', w.Width-x, false, globalTabReverse)
}
}
|
