diff options
Diffstat (limited to 'vendor/github.com/gdamore/tcell/v2/console_win.go')
| -rw-r--r-- | vendor/github.com/gdamore/tcell/v2/console_win.go | 50 |
1 files changed, 39 insertions, 11 deletions
diff --git a/vendor/github.com/gdamore/tcell/v2/console_win.go b/vendor/github.com/gdamore/tcell/v2/console_win.go index 66ab4938f..92ae4e5c2 100644 --- a/vendor/github.com/gdamore/tcell/v2/console_win.go +++ b/vendor/github.com/gdamore/tcell/v2/console_win.go @@ -41,6 +41,7 @@ type cScreen struct { vten bool truecolor bool running bool + disableAlt bool // disable the alternate screen w int h int @@ -159,6 +160,10 @@ const ( vtCursorSteadyUnderline = "\x1b[4 q" vtCursorBlinkingBar = "\x1b[5 q" vtCursorSteadyBar = "\x1b[6 q" + vtDisableAm = "\x1b[?7l" + vtEnableAm = "\x1b[?7h" + vtEnterCA = "\x1b[?1049h\x1b[22;0;0t" + vtExitCA = "\x1b[?1049l\x1b[23;0;0t" ) var vtCursorStyles = map[CursorStyle]string{ @@ -182,7 +187,6 @@ func (s *cScreen) Init() error { s.eventQ = make(chan Event, 10) s.quit = make(chan struct{}) s.scandone = make(chan struct{}) - in, e := syscall.Open("CONIN$", syscall.O_RDWR, 0) if e != nil { return e @@ -197,20 +201,22 @@ func (s *cScreen) Init() error { s.truecolor = true - // ConEmu handling of colors and scrolling when in terminal - // mode is extremely problematic at the best. The color - // palette will scroll even though characters do not, when - // emitting stuff for the last character. In the future we - // might change this to look at specific versions of ConEmu - // if they fix the bug. + // ConEmu handling of colors and scrolling when in VT output mode is extremely poor. + // The color palette will scroll even though characters do not, when + // emitting stuff for the last character. In the future we might change this to + // look at specific versions of ConEmu if they fix the bug. + // We can also try disabling auto margin mode. + tryVt := true if os.Getenv("ConEmuPID") != "" { s.truecolor = false + tryVt = false } switch os.Getenv("TCELL_TRUECOLOR") { case "disable": s.truecolor = false case "enable": s.truecolor = true + tryVt = true } s.Lock() @@ -227,9 +233,22 @@ func (s *cScreen) Init() error { s.fini = false s.setInMode(modeResizeEn | modeExtendFlg) - // 24-bit color is opt-in for now, because we can't figure out - // to make it work consistently. - if s.truecolor { + // If a user needs to force old style console, they may do so + // by setting TCELL_VTMODE to disable. This is an undocumented safety net for now. + // It may be removed in the future. (This mostly exists because of ConEmu.) + switch os.Getenv("TCELL_VTMODE") { + case "disable": + tryVt = false + case "enable": + tryVt = true + } + switch os.Getenv("TCELL_ALTSCREEN") { + case "enable": + s.disableAlt = false // also the default + case "disable": + s.disableAlt = true + } + if tryVt { s.setOutMode(modeVtOutput | modeNoAutoNL | modeCookedOut | modeUnderline) var om uint32 s.getOutMode(&om) @@ -316,11 +335,16 @@ func (s *cScreen) disengage() { if s.vten { s.emitVtString(vtCursorStyles[CursorStyleDefault]) + s.emitVtString(vtEnableAm) + if !s.disableAlt { + s.emitVtString(vtExitCA) + } + } else if !s.disableAlt { + s.clearScreen(StyleDefault, s.vten) } s.setInMode(s.oimode) s.setOutMode(s.oomode) s.setBufferSize(int(s.oscreen.size.x), int(s.oscreen.size.y)) - s.clearScreen(StyleDefault, false) s.setCursorPos(0, 0, false) s.setCursorInfo(&s.ocursor) _, _, _ = procSetConsoleTextAttribute.Call( @@ -349,6 +373,10 @@ func (s *cScreen) engage() error { if s.vten { s.setOutMode(modeVtOutput | modeNoAutoNL | modeCookedOut | modeUnderline) + if !s.disableAlt { + s.emitVtString(vtEnterCA) + } + s.emitVtString(vtDisableAm) } else { s.setOutMode(0) } |