boltbrowser/vendor/github.com/br0xen/termbox-util/termbox_util.go
Brian Buller 97cc915452 Vendored Dependencies
Also removed some commented out code
2017-08-30 08:55:08 -05:00

152 lines
3.8 KiB
Go

package termboxUtil
import (
"fmt"
"strings"
"github.com/nsf/termbox-go"
)
type termboxControl interface {
GetID() string
GetX() int
SetX(int)
GetY() int
SetY(int)
GetWidth() int
SetWidth(int)
GetHeight() int
SetHeight(int)
GetFgColor() termbox.Attribute
SetFgColor(termbox.Attribute)
GetBgColor() termbox.Attribute
SetBgColor(termbox.Attribute)
HandleEvent(termbox.Event) bool
IsBordered() bool
SetBordered(bool)
SetTabSkip(bool)
IsTabSkipped() bool
Draw()
}
// TextAlignment is an int value for how we're aligning text
type TextAlignment int
const (
// AlignLeft Aligns text to the left
AlignLeft = iota
// AlignCenter Aligns text to the center
AlignCenter
// AlignRight Aligns text to the right
AlignRight
)
/* Basic Input Helpers */
// KeyIsAlphaNumeric Returns whether the termbox event is an
// Alpha-Numeric Key Press
func KeyIsAlphaNumeric(event termbox.Event) bool {
return KeyIsAlpha(event) || KeyIsNumeric(event)
}
// KeyIsAlpha Returns whether the termbox event is a
// alphabetic Key press
func KeyIsAlpha(event termbox.Event) bool {
k := event.Ch
if (k >= 'a' && k <= 'z') || (k >= 'A' && k <= 'Z') {
return true
}
return false
}
// KeyIsNumeric Returns whether the termbox event is a
// numeric Key press
func KeyIsNumeric(event termbox.Event) bool {
k := event.Ch
if k >= '0' && k <= '9' {
return true
}
return false
}
// KeyIsSymbol Returns whether the termbox event is a
// symbol Key press
func KeyIsSymbol(event termbox.Event) bool {
symbols := []rune{'!', '@', '#', '$', '%', '^', '&', '*',
'(', ')', '-', '_', '=', '+', '[', ']', '{', '}', '|',
';', ':', '"', '\'', ',', '<', '.', '>', '/', '?', '`', '~'}
k := event.Ch
for i := range symbols {
if k == symbols[i] {
return true
}
}
return false
}
/* Basic Output Helpers */
// DrawStringAtPoint Draw a string of text at x, y with foreground color fg, background color bg
func DrawStringAtPoint(str string, x int, y int, fg termbox.Attribute, bg termbox.Attribute) (int, int) {
xPos := x
for _, runeValue := range str {
termbox.SetCell(xPos, y, runeValue, fg, bg)
xPos++
}
return xPos, y
}
// FillWithChar Fills from x1,y1 through x2,y2 with the rune r, foreground color fg, background bg
func FillWithChar(r rune, x1, y1, x2, y2 int, fg termbox.Attribute, bg termbox.Attribute) {
for xx := x1; xx <= x2; xx++ {
for yx := y1; yx <= y2; yx++ {
termbox.SetCell(xx, yx, r, fg, bg)
}
}
}
// DrawBorder Draw a border around the area inside x1,y1 -> x2, y2
func DrawBorder(x1, y1, x2, y2 int, fg termbox.Attribute, bg termbox.Attribute) {
termbox.SetCell(x1, y1, '+', fg, bg)
FillWithChar('-', x1+1, y1, x2-1, y1, fg, bg)
termbox.SetCell(x2, y1, '+', fg, bg)
FillWithChar('|', x1, y1+1, x1, y2-1, fg, bg)
FillWithChar('|', x2, y1+1, x2, y2-1, fg, bg)
termbox.SetCell(x1, y2, '+', fg, bg)
FillWithChar('-', x1+1, y2, x2-1, y2, fg, bg)
termbox.SetCell(x2, y2, '+', fg, bg)
}
// AlignText Aligns the text txt within width characters using the specified alignment
func AlignText(txt string, width int, align TextAlignment) string {
return AlignTextWithFill(txt, width, align, ' ')
}
// AlignTextWithFill Aligns the text txt within width characters using the specified alignment
// filling any spaces with the 'fill' character
func AlignTextWithFill(txt string, width int, align TextAlignment, fill rune) string {
fillChar := string(fill)
numSpaces := width - len(txt)
switch align {
case AlignCenter:
if numSpaces/2 > 0 {
return fmt.Sprintf("%s%s%s",
strings.Repeat(fillChar, numSpaces/2),
txt, strings.Repeat(fillChar, numSpaces/2),
)
}
return txt
case AlignRight:
return fmt.Sprintf("%s%s", strings.Repeat(fillChar, numSpaces), txt)
default:
if numSpaces >= 0 {
return fmt.Sprintf("%s%s", txt, strings.Repeat(fillChar, numSpaces))
}
return txt
}
}
/* More advanced things are in their respective files */