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authorDrew DeVault <sir@cmpwn.com>2019-03-17 14:54:25 -0400
committerDrew DeVault <sir@cmpwn.com>2019-03-17 14:54:25 -0400
commitbd71787e3fa9caf53f18dab37c4f37a2631b2354 (patch)
tree4bc2974b399a299b0a7510442968a7aa058374ea /widgets
parent1170893e395ff5e3e7bee7ff51224b4a572f01cf (diff)
Fix terminal colors; wait until tty size is known
Diffstat (limited to 'widgets')
-rw-r--r--widgets/terminal.go96
1 files changed, 75 insertions, 21 deletions
diff --git a/widgets/terminal.go b/widgets/terminal.go
index 4cf7d9a..502d974 100644
--- a/widgets/terminal.go
+++ b/widgets/terminal.go
@@ -1,6 +1,7 @@
package widgets
import (
+ gocolor "image/color"
"os"
"os/exec"
@@ -14,6 +15,7 @@ import (
type Terminal struct {
closed bool
cmd *exec.Cmd
+ colors map[tcell.Color]tcell.Color
ctx *ui.Context
cursorPos vterm.Pos
cursorShown bool
@@ -21,24 +23,18 @@ type Terminal struct {
focus bool
onInvalidate func(d ui.Drawable)
pty *os.File
+ start chan interface{}
vterm *vterm.VTerm
}
func NewTerminal(cmd *exec.Cmd) (*Terminal, error) {
term := &Terminal{}
term.cmd = cmd
- tty, err := pty.Start(cmd)
- if err != nil {
- return nil, err
- }
- term.pty = tty
- rows, cols, err := pty.Getsize(term.pty)
- if err != nil {
- return nil, err
- }
- term.vterm = vterm.New(rows, cols)
+ term.vterm = vterm.New(24, 80)
term.vterm.SetUTF8(true)
+ term.start = make(chan interface{})
go func() {
+ <-term.start
buf := make([]byte, 2048)
for {
n, err := term.pty.Read(buf)
@@ -56,6 +52,27 @@ func NewTerminal(cmd *exec.Cmd) (*Terminal, error) {
screen.OnDamage = term.onDamage
screen.OnMoveCursor = term.onMoveCursor
screen.Reset(true)
+
+ state := term.vterm.ObtainState()
+ term.colors = make(map[tcell.Color]tcell.Color)
+ for i := 0; i < 16; i += 1 {
+ // Set the first 16 colors to predictable near-black RGB values
+ tcolor := tcell.Color(i)
+ var r uint8 = 0
+ var g uint8 = 0
+ var b uint8 = uint8(i + 1)
+ state.SetPaletteColor(i,
+ vterm.NewVTermColorRGB(gocolor.RGBA{r, g, b, 255}))
+ term.colors[tcell.NewRGBColor(int32(r), int32(g), int32(b))] = tcolor
+ }
+ fg, bg := state.GetDefaultColors()
+ r, g, b := bg.GetRGB()
+ term.colors[tcell.NewRGBColor(
+ int32(r), int32(g), int32(b))] = tcell.ColorDefault
+ r, g, b = fg.GetRGB()
+ term.colors[tcell.NewRGBColor(
+ int32(r), int32(g), int32(b))] = tcell.ColorDefault
+
return term, nil
}
@@ -80,6 +97,22 @@ func (term *Terminal) Invalidate() {
}
func (term *Terminal) Draw(ctx *ui.Context) {
+ winsize := pty.Winsize{
+ Cols: uint16(ctx.Width()),
+ Rows: uint16(ctx.Height()),
+ }
+
+ if term.pty == nil {
+ term.vterm.SetSize(ctx.Height(), ctx.Width())
+ tty, err := pty.StartWithSize(term.cmd, &winsize)
+ term.pty = tty
+ if err != nil {
+ term.Close()
+ return
+ }
+ term.start <- nil
+ }
+
term.ctx = ctx // gross
if term.closed {
return
@@ -90,10 +123,6 @@ func (term *Terminal) Draw(ctx *ui.Context) {
return
}
if ctx.Width() != cols || ctx.Height() != rows {
- winsize := pty.Winsize{
- Cols: uint16(ctx.Width()),
- Rows: uint16(ctx.Height()),
- }
pty.Setsize(term.pty, &winsize)
term.vterm.SetSize(ctx.Height(), ctx.Width())
return
@@ -125,7 +154,7 @@ func (term *Terminal) Draw(ctx *ui.Context) {
if err != nil {
continue
}
- style := styleFromCell(cell)
+ style := term.styleFromCell(cell)
ctx.Printf(x, y, style, "%s", string(cell.Chars()))
}
}
@@ -142,14 +171,39 @@ func (term *Terminal) Event(event tcell.Event) bool {
return false
}
-func styleFromCell(cell *vterm.ScreenCell) tcell.Style {
+func (term *Terminal) styleFromCell(cell *vterm.ScreenCell) tcell.Style {
+ style := tcell.StyleDefault
+
background := cell.Bg()
- br, bg, bb := background.GetRGB()
+ r, g, b := background.GetRGB()
+ bg := tcell.NewRGBColor(int32(r), int32(g), int32(b))
foreground := cell.Fg()
- fr, fg, fb := foreground.GetRGB()
- style := tcell.StyleDefault.
- Background(tcell.NewRGBColor(int32(br), int32(bg), int32(bb))).
- Foreground(tcell.NewRGBColor(int32(fr), int32(fg), int32(fb)))
+ r, g, b = foreground.GetRGB()
+ fg := tcell.NewRGBColor(int32(r), int32(g), int32(b))
+
+ if color, ok := term.colors[bg]; ok {
+ style = style.Background(color)
+ } else {
+ style = style.Background(bg)
+ }
+ if color, ok := term.colors[fg]; ok {
+ style = style.Foreground(color)
+ } else {
+ style = style.Foreground(fg)
+ }
+
+ if cell.Attrs().Bold != 0 {
+ style = style.Bold(true)
+ }
+ if cell.Attrs().Underline != 0 {
+ style = style.Underline(true)
+ }
+ if cell.Attrs().Blink != 0 {
+ style = style.Blink(true)
+ }
+ if cell.Attrs().Reverse != 0 {
+ style = style.Reverse(true)
+ }
return style
}