128 lines
2.2 KiB
Go
128 lines
2.2 KiB
Go
package display
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import (
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"unicode/utf8"
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"github.com/zyedidia/micro/internal/buffer"
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"github.com/zyedidia/micro/internal/config"
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"github.com/zyedidia/micro/internal/screen"
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"github.com/zyedidia/micro/internal/util"
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)
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type TabWindow struct {
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Names []string
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active int
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Y int
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width int
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hscroll int
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}
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func NewTabWindow(w int, y int) *TabWindow {
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tw := new(TabWindow)
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tw.width = w
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tw.Y = y
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return tw
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}
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func (w *TabWindow) GetMouseLoc(vloc buffer.Loc) int {
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x := -w.hscroll
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for i, n := range w.Names {
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x++
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s := utf8.RuneCountInString(n)
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if vloc.Y == w.Y && vloc.X < x+s {
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return i
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}
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x += s
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x += 3
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if x >= w.width {
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break
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}
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}
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return -1
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}
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func (w *TabWindow) Scroll(amt int) {
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w.hscroll += amt
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w.hscroll = util.Clamp(w.hscroll, 0, w.TotalSize()-w.width)
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}
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func (w *TabWindow) TotalSize() int {
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sum := 2
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for _, n := range w.Names {
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sum += utf8.RuneCountInString(n) + 4
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}
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return sum - 4
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}
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func (w *TabWindow) Active() int {
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return w.active
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}
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func (w *TabWindow) SetActive(a int) {
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w.active = a
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x := 2
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s := w.TotalSize()
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for i, n := range w.Names {
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c := utf8.RuneCountInString(n)
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if i == a {
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if x+c >= w.hscroll+w.width {
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w.hscroll = util.Clamp(x+c+1-w.width, 0, s-w.width)
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} else if x < w.hscroll {
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w.hscroll = util.Clamp(x-4, 0, s-w.width)
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}
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break
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}
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x += c + 4
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}
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}
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// TODO: handle files with character width >=2
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func (w *TabWindow) Display() {
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x := -w.hscroll
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done := false
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draw := func(r rune, n int) {
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for i := 0; i < n; i++ {
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if x == w.width-1 && !done {
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screen.Screen.SetContent(w.width-1, w.Y, '>', nil, config.DefStyle.Reverse(true))
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x++
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break
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} else if x == 0 && w.hscroll > 0 {
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screen.Screen.SetContent(0, w.Y, '<', nil, config.DefStyle.Reverse(true))
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} else if x >= 0 && x < w.width {
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screen.Screen.SetContent(x, w.Y, r, nil, config.DefStyle.Reverse(true))
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}
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x++
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}
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}
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for i, n := range w.Names {
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if i == w.active {
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draw('[', 1)
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} else {
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draw(' ', 1)
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}
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for _, c := range n {
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draw(c, 1)
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}
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if i == len(w.Names)-1 {
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done = true
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}
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if i == w.active {
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draw(']', 1)
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draw(' ', 2)
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} else {
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draw(' ', 3)
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}
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if x >= w.width {
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break
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}
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}
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if x < w.width {
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draw(' ', w.width-x)
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}
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}
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