tslocum/cview
tslocum/cview
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Document how to prevent screen artifacts when using SetBackgroundTransparent

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Resolves #45.
This commit is contained in:
Trevor Slocum 2020-12-15 10:34:35 -08:00
parent de3c277462
commit 1af0da7606
5 changed files with 19 additions and 8 deletions
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3
CHANGELOG
View file

@ -1,3 +1,6 @@
v1.5.3 (WIP)
- Document how to prevent screen artifacts when using SetBackgroundTransparent
v1.5.2 (2020-12-04)
- Handle input events before executing queued update functions
- Fix WindowManager background not being drawn

6
box.go
View file

@ -336,7 +336,11 @@ func (b *Box) GetBackgroundColor() tcell.Color {
}
// SetBackgroundTransparent sets the flag indicating whether or not the box's
// background is transparent.
// background is transparent. The screen is not cleared before drawing the
// application. Overlaying transparent widgets directly onto the screen may
// result in artifacts. To resolve this, add a blank, non-transparent Box to
// the bottom layer of the interface via Panels, or set a handler via
// SetBeforeDrawFunc which clears the screen.
func (b *Box) SetBackgroundTransparent(transparent bool) {
b.l.Lock()
defer b.l.Unlock()

6
doc.go
View file

@ -168,7 +168,11 @@ You can use the Escape() function to insert brackets automatically where needed.
Setting the background color of a primitive to tcell.ColorDefault will use the
default terminal background color. To enable transparency (allowing one or more
primitives to display behind a primitive) call SetBackgroundTransparent.
primitives to display behind a primitive) call SetBackgroundTransparent. The
screen is not cleared before drawing the application. Overlaying transparent
widgets directly onto the screen may result in artifacts. To resolve this, add
a blank, non-transparent Box to the bottom layer of the interface via Panels,
or set a handler via SetBeforeDrawFunc which clears the screen.
Styles

4
go.mod
View file

@ -3,11 +3,11 @@ module gitlab.com/tslocum/cview
go 1.12
require (
github.com/gdamore/tcell/v2 v2.0.1-0.20201109052606-7d87d8188c8d
github.com/gdamore/tcell/v2 v2.1.0
github.com/lucasb-eyer/go-colorful v1.0.3
github.com/mattn/go-runewidth v0.0.9
github.com/rivo/uniseg v0.2.0
gitlab.com/tslocum/cbind v0.1.4
golang.org/x/sys v0.0.0-20201202213521-69691e467435 // indirect
golang.org/x/sys v0.0.0-20201214210602-f9fddec55a1e // indirect
golang.org/x/text v0.3.4 // indirect
)

8
go.sum
View file

@ -1,8 +1,8 @@
github.com/gdamore/encoding v1.0.0 h1:+7OoQ1Bc6eTm5niUzBa0Ctsh6JbMW6Ra+YNuAtDBdko=
github.com/gdamore/encoding v1.0.0/go.mod h1:alR0ol34c49FCSBLjhosxzcPHQbf2trDkoo5dl+VrEg=
github.com/gdamore/tcell/v2 v2.0.0-dev/go.mod h1:vSVL/GV5mCSlPC6thFP5kfOFdM9MGZcalipmpTxTgQA=
github.com/gdamore/tcell/v2 v2.0.1-0.20201109052606-7d87d8188c8d h1:C1FQEuzw5kUUveSXpZp3v0+qOR+VEnzHsQ7K6n39LsM=
github.com/gdamore/tcell/v2 v2.0.1-0.20201109052606-7d87d8188c8d/go.mod h1:vSVL/GV5mCSlPC6thFP5kfOFdM9MGZcalipmpTxTgQA=
github.com/gdamore/tcell/v2 v2.1.0 h1:UnSmozHgBkQi2PGsFr+rpdXuAPRRucMegpQp3Z3kDro=
github.com/gdamore/tcell/v2 v2.1.0/go.mod h1:vSVL/GV5mCSlPC6thFP5kfOFdM9MGZcalipmpTxTgQA=
github.com/lucasb-eyer/go-colorful v1.0.3 h1:QIbQXiugsb+q10B+MI+7DI1oQLdmnep86tWFlaaUAac=
github.com/lucasb-eyer/go-colorful v1.0.3/go.mod h1:R4dSotOR9KMtayYi1e77YzuveK+i7ruzyGqttikkLy0=
github.com/mattn/go-runewidth v0.0.7/go.mod h1:H031xJmbD/WCDINGzjvQ9THkh0rPKHF+m2gUSrubnMI=
@ -14,8 +14,8 @@ gitlab.com/tslocum/cbind v0.1.4 h1:cbZXPPcieXspk8cShoT6efz7HAT8yMNQcofYWNizis4=
gitlab.com/tslocum/cbind v0.1.4/go.mod h1:RvwYE3auSjBNlCmWeGspzn+jdLUVQ8C2QGC+0nP9ChI=
golang.org/x/sys v0.0.0-20190626150813-e07cf5db2756/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
golang.org/x/sys v0.0.0-20201013132646-2da7054afaeb/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
golang.org/x/sys v0.0.0-20201202213521-69691e467435 h1:25AvDqqB9PrNqj1FLf2/70I4W0L19qqoaFq3gjNwbKk=
golang.org/x/sys v0.0.0-20201202213521-69691e467435/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
golang.org/x/sys v0.0.0-20201214210602-f9fddec55a1e h1:AyodaIpKjppX+cBfTASF2E1US3H2JFBj920Ot3rtDjs=
golang.org/x/sys v0.0.0-20201214210602-f9fddec55a1e/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
golang.org/x/text v0.3.3 h1:cokOdA+Jmi5PJGXLlLllQSgYigAEfHXJAERHVMaCc2k=
golang.org/x/text v0.3.3/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=