mirror of
https://github.com/VladimirMarkelov/clui.git
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122 lines
2.8 KiB
Go
122 lines
2.8 KiB
Go
package clui
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import (
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term "github.com/nsf/termbox-go"
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)
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/*
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Theme support for controls.
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The current implementation is limited but later the manager will be
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able to load a requested theme on demand and use deep inheritance.
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Theme 'default' exists always - it is predefinded and always complete.
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User-defined themes may omit any theme section, all omitted items
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are loaded from parent theme. The only required property that a user-
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defined theme must have is a theme name.
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*/
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type ThemeManager struct {
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// available theme list
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themes map[string]theme
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// name of the current theme
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current string
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}
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/*
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A theme structure. It keeps all colors, characters for the theme.
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Parent property determines a theme name that is used if a requested
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theme object is not declared in the current one. If no parent is
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defined then the library uses default built-in theme.
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*/
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type theme struct {
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colors map[ColorId]term.Attribute
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objects map[ObjId]string
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parent string
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}
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const defaultTheme = "default"
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// Theme color constants
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// const (
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// )
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func NewThemeManager() *ThemeManager {
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sm := new(ThemeManager)
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sm.current = defaultTheme
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sm.themes = make(map[string]theme, 0)
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defTheme := theme{parent: ""}
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defTheme.colors = make(map[ColorId]term.Attribute, 0)
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defTheme.objects = make(map[ObjId]string, 0)
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defTheme.objects[ObjSingleBorder] = "─│┌┐└┘"
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defTheme.objects[ObjDoubleBorder] = "═║╔╗╚╝"
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defTheme.objects[ObjEdit] = "←→V"
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defTheme.objects[ObjScrollBar] = "|O^v"
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defTheme.objects[ObjViewButtons] = "^↓○[]"
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defTheme.objects[ObjCheckBox] = "[] X?"
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defTheme.objects[ObjRadio] = "() *"
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defTheme.objects[ObjProgressBar] = "░▒"
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defTheme.colors[ColorText] = ColorWhite
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defTheme.colors[ColorBack] = ColorBlack
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defTheme.colors[ColorViewBack] = ColorBlackBold
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defTheme.colors[ColorViewText] = ColorWhite
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sm.themes[defaultTheme] = defTheme
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return sm
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}
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func (s *ThemeManager) SysColor(color ColorId) term.Attribute {
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sch, ok := s.themes[s.current]
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if !ok {
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sch = s.themes[defaultTheme]
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}
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clr, okclr := sch.colors[color]
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if !okclr && sch.parent != "" {
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sch = s.themes[sch.parent]
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clr, okclr = sch.colors[color]
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if !okclr {
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clr = term.ColorDefault
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}
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}
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return clr
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}
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func (s *ThemeManager) SysObject(object ObjId) string {
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sch, ok := s.themes[s.current]
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if !ok {
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sch = s.themes[defaultTheme]
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}
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obj, okobj := sch.objects[object]
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if !okobj && sch.parent != "" {
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sch = s.themes[sch.parent]
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obj = sch.objects[object]
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}
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return obj
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}
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func (s *ThemeManager) GetThemeList() []string {
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str := make([]string, len(s.themes))
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for k := range s.themes {
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str = append(str, k)
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}
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return str
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}
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func (s *ThemeManager) GetCurrentTheme() string {
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return s.current
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}
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func (s *ThemeManager) SetCurrentTheme(name string) bool {
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if _, ok := s.themes[name]; ok {
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s.current = name
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return true
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}
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return false
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}
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