fzf/src/tui/tui.go

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package tui
import (
"time"
)
// Types of user action
const (
Rune = iota
CtrlA
CtrlB
CtrlC
CtrlD
CtrlE
CtrlF
CtrlG
CtrlH
Tab
CtrlJ
CtrlK
CtrlL
CtrlM
CtrlN
CtrlO
CtrlP
CtrlQ
CtrlR
CtrlS
CtrlT
CtrlU
CtrlV
CtrlW
CtrlX
CtrlY
CtrlZ
ESC
Invalid
Resize
Mouse
DoubleClick
BTab
BSpace
Del
PgUp
PgDn
Up
Down
Left
Right
Home
End
SLeft
SRight
F1
F2
F3
F4
F5
F6
F7
F8
F9
F10
F11
F12
AltEnter
AltSpace
AltSlash
AltBS
Alt0
)
const ( // Reset iota
AltA = Alt0 + 'a' - '0' + iota
AltB
AltC
AltD
AltE
AltF
AltZ = AltA + 'z' - 'a'
)
const (
doubleClickDuration = 500 * time.Millisecond
)
type Color int32
func (c Color) is24() bool {
return c > 0 && (c&(1<<24)) > 0
}
const (
colUndefined Color = -2
colDefault = -1
)
const (
colBlack Color = iota
colRed
colGreen
colYellow
colBlue
colMagenta
colCyan
colWhite
)
type ColorTheme struct {
Fg Color
Bg Color
DarkBg Color
Prompt Color
Match Color
Current Color
CurrentMatch Color
Spinner Color
Info Color
Cursor Color
Selected Color
Header Color
Border Color
}
type Event struct {
Type int
Char rune
MouseEvent *MouseEvent
}
type MouseEvent struct {
Y int
X int
S int
Down bool
Double bool
Mod bool
}
var (
_color bool
_prevDownTime time.Time
_clickY []int
Default16 *ColorTheme
Dark256 *ColorTheme
Light256 *ColorTheme
)
type Window struct {
impl *WindowImpl
Top int
Left int
Width int
Height int
}
func EmptyTheme() *ColorTheme {
return &ColorTheme{
Fg: colUndefined,
Bg: colUndefined,
DarkBg: colUndefined,
Prompt: colUndefined,
Match: colUndefined,
Current: colUndefined,
CurrentMatch: colUndefined,
Spinner: colUndefined,
Info: colUndefined,
Cursor: colUndefined,
Selected: colUndefined,
Header: colUndefined,
Border: colUndefined}
}
func init() {
_prevDownTime = time.Unix(0, 0)
_clickY = []int{}
Default16 = &ColorTheme{
Fg: colDefault,
Bg: colDefault,
DarkBg: colBlack,
Prompt: colBlue,
Match: colGreen,
Current: colYellow,
CurrentMatch: colGreen,
Spinner: colGreen,
Info: colWhite,
Cursor: colRed,
Selected: colMagenta,
Header: colCyan,
Border: colBlack}
Dark256 = &ColorTheme{
Fg: colDefault,
Bg: colDefault,
DarkBg: 236,
Prompt: 110,
Match: 108,
Current: 254,
CurrentMatch: 151,
Spinner: 148,
Info: 144,
Cursor: 161,
Selected: 168,
Header: 109,
Border: 59}
Light256 = &ColorTheme{
Fg: colDefault,
Bg: colDefault,
DarkBg: 251,
Prompt: 25,
Match: 66,
Current: 237,
CurrentMatch: 23,
Spinner: 65,
Info: 101,
Cursor: 161,
Selected: 168,
Header: 31,
Border: 145}
}
func InitTheme(theme *ColorTheme, black bool) {
_color = theme != nil
if !_color {
return
}
baseTheme := DefaultTheme()
if black {
theme.Bg = colBlack
}
o := func(a Color, b Color) Color {
if b == colUndefined {
return a
}
return b
}
theme.Fg = o(baseTheme.Fg, theme.Fg)
theme.Bg = o(baseTheme.Bg, theme.Bg)
theme.DarkBg = o(baseTheme.DarkBg, theme.DarkBg)
theme.Prompt = o(baseTheme.Prompt, theme.Prompt)
theme.Match = o(baseTheme.Match, theme.Match)
theme.Current = o(baseTheme.Current, theme.Current)
theme.CurrentMatch = o(baseTheme.CurrentMatch, theme.CurrentMatch)
theme.Spinner = o(baseTheme.Spinner, theme.Spinner)
theme.Info = o(baseTheme.Info, theme.Info)
theme.Cursor = o(baseTheme.Cursor, theme.Cursor)
theme.Selected = o(baseTheme.Selected, theme.Selected)
theme.Header = o(baseTheme.Header, theme.Header)
theme.Border = o(baseTheme.Border, theme.Border)
}