Terminal-based user interface toolkit
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package cview
import "github.com/gdamore/tcell/v2"
// Theme defines the colors used when primitives are initialized.
type Theme struct {
// Title, border and other lines
TitleColor tcell.Color // Box titles.
BorderColor tcell.Color // Box borders.
GraphicsColor tcell.Color // Graphics.
// Text
PrimaryTextColor tcell.Color // Primary text.
SecondaryTextColor tcell.Color // Secondary text (e.g. labels).
TertiaryTextColor tcell.Color // Tertiary text (e.g. subtitles, notes).
InverseTextColor tcell.Color // Text on primary-colored backgrounds.
ContrastPrimaryTextColor tcell.Color // Primary text for contrasting elements.
ContrastSecondaryTextColor tcell.Color // Secondary text on ContrastBackgroundColor-colored backgrounds.
// Background
PrimitiveBackgroundColor tcell.Color // Main background color for primitives.
ContrastBackgroundColor tcell.Color // Background color for contrasting elements.
MoreContrastBackgroundColor tcell.Color // Background color for even more contrasting elements.
// Button
ButtonCursorRune rune // The symbol to draw at the end of button labels when focused.
// Check box
CheckBoxCheckedRune rune
CheckBoxCursorRune rune // The symbol to draw within the checkbox when focused.
// Context menu
ContextMenuPaddingTop int
ContextMenuPaddingBottom int
ContextMenuPaddingLeft int
ContextMenuPaddingRight int
// Drop down
DropDownAbbreviationChars string // The chars to show when the option's text gets shortened.
DropDownSymbol rune // The symbol to draw at the end of the field when closed.
DropDownOpenSymbol rune // The symbol to draw at the end of the field when opened.
// Scroll bar
ScrollBarColor tcell.Color
// Window
WindowMinWidth int
WindowMinHeight int
// Styles defines the appearance of an application. The default is for a black
// background and some basic colors: black, white, yellow, green, cyan, and
// blue.
var Styles = Theme{
TitleColor: tcell.ColorWhite.TrueColor(),
BorderColor: tcell.ColorWhite.TrueColor(),
GraphicsColor: tcell.ColorWhite.TrueColor(),
PrimaryTextColor: tcell.ColorWhite.TrueColor(),
SecondaryTextColor: tcell.ColorYellow.TrueColor(),
TertiaryTextColor: tcell.ColorLimeGreen.TrueColor(),
InverseTextColor: tcell.ColorBlack.TrueColor(),
ContrastPrimaryTextColor: tcell.ColorBlack.TrueColor(),
ContrastSecondaryTextColor: tcell.ColorLightSlateGray.TrueColor(),
PrimitiveBackgroundColor: tcell.ColorBlack.TrueColor(),
ContrastBackgroundColor: tcell.ColorGreen.TrueColor(),
MoreContrastBackgroundColor: tcell.ColorDarkGreen.TrueColor(),
ButtonCursorRune: '◀',
CheckBoxCheckedRune: 'X',
CheckBoxCursorRune: '◀',
ContextMenuPaddingTop: 0,
ContextMenuPaddingBottom: 0,
ContextMenuPaddingLeft: 1,
ContextMenuPaddingRight: 1,
DropDownAbbreviationChars: "...",
DropDownSymbol: '◀',
DropDownOpenSymbol: '▼',
ScrollBarColor: tcell.ColorWhite.TrueColor(),
WindowMinWidth: 4,
WindowMinHeight: 3,