Add Everforest Theme (#170)

packages/tui/internal/theme/everforest.go

@@ -0,0 +1,298 @@
+package theme
+
+import (
+	"github.com/charmbracelet/lipgloss/v2"
+	"github.com/charmbracelet/lipgloss/v2/compat"
+)
+
+// EverforestTheme implements the Theme interface with Everforest colors.
+// It provides both dark and light variants with Medium (default) contrast.
+type EverforestTheme struct {
+	BaseTheme
+}
+
+// NewEverforestTheme creates a new instance of the Everforest Medium theme.
+func NewEverforestTheme() *EverforestTheme {
+	// Everforest color palette - Medium variant
+	// Official colors from https://github.com/sainnhe/everforest/wiki
+	// Dark mode colors - using Everforest:Dark Medium contrast palette
+	darkStep1 := "#2d353b"  // App background
+	darkStep2 := "#333c43"  // Subtle background
+	darkStep3 := "#343f44"  // UI element background
+	darkStep4 := "#3d484d"  // Hovered UI element background
+	darkStep5 := "#475258"  // Active/Selected UI element background
+	darkStep6 := "#7a8478"  // Subtle borders and separators
+	darkStep7 := "#859289"  // UI element border and focus rings
+	darkStep8 := "#9da9a0"  // Hovered UI element border
+	darkStep9 := "#a7c080"  // Solid backgrounds
+	darkStep10 := "#83c092" // Hovered solid backgrounds
+	darkStep11 := "#7a8478" // Low-contrast text
+	darkStep12 := "#d3c6aa" // High-contrast text
+
+	// Dark mode accent colors
+	darkPrimary := darkStep9   // Primary uses step 9 (green)
+	darkSecondary := "#7fbbb3" // Secondary (blue)
+	darkAccent := "#d699b6"    // Accent (purple)
+	darkRed := "#e67e80"       // Error (red)
+	darkOrange := "#e69875"    // Warning (orange)
+	darkGreen := "#a7c080"     // Success (green)
+	darkCyan := "#83c092"      // Info (aqua)
+	darkYellow := "#dbbc7f"    // Emphasized text
+
+	// Light mode colors for the Everforest:Light Medium contrast palette
+	lightStep1 := "#fdf6e3"  // App background
+	lightStep2 := "#efebd4"  // Subtle background
+	lightStep3 := "#f4f0d9"  // UI element background
+	lightStep4 := "#efebd4"  // Hovered UI element background
+	lightStep5 := "#e6e2cc"  // Active/Selected UI element background
+	lightStep6 := "#a6b0a0"  // Subtle borders and separators
+	lightStep7 := "#939f91"  // UI element border and focus rings
+	lightStep8 := "#829181"  // Hovered UI element border
+	lightStep9 := "#8da101"  // Solid backgrounds
+	lightStep10 := "#35a77c" // Hovered solid backgrounds
+	lightStep11 := "#a6b0a0" // Low-contrast text
+	lightStep12 := "#5c6a72" // High-contrast text
+
+	// Light mode accent colors
+	lightPrimary := lightStep9  // Primary uses step 9 (green)
+	lightSecondary := "#3a94c5" // Secondary blue
+	lightAccent := "#df69ba"    // Accent purple
+	lightRed := "#f85552"       // Error red
+	lightOrange := "#f57d26"    // Warning orange
+	lightGreen := "#8da101"     // Success green
+	lightCyan := "#35a77c"      // Info aqua
+	lightYellow := "#dfa000"    // Emphasized text
+
+	// Unused variables. These could be used for hover states
+	_ = darkStep4
+	_ = darkStep5
+	_ = darkStep10
+	_ = lightStep4
+	_ = lightStep5
+	_ = lightStep10
+
+	theme := &EverforestTheme{}
+
+	// Base colors
+	theme.PrimaryColor = compat.AdaptiveColor{
+		Dark:  lipgloss.Color(darkPrimary),
+		Light: lipgloss.Color(lightPrimary),
+	}
+	theme.SecondaryColor = compat.AdaptiveColor{
+		Dark:  lipgloss.Color(darkSecondary),
+		Light: lipgloss.Color(lightSecondary),
+	}
+	theme.AccentColor = compat.AdaptiveColor{
+		Dark:  lipgloss.Color(darkAccent),
+		Light: lipgloss.Color(lightAccent),
+	}
+
+	// Status colors
+	theme.ErrorColor = compat.AdaptiveColor{
+		Dark:  lipgloss.Color(darkRed),
+		Light: lipgloss.Color(lightRed),
+	}
+	theme.WarningColor = compat.AdaptiveColor{
+		Dark:  lipgloss.Color(darkOrange),
+		Light: lipgloss.Color(lightOrange),
+	}
+	theme.SuccessColor = compat.AdaptiveColor{
+		Dark:  lipgloss.Color(darkGreen),
+		Light: lipgloss.Color(lightGreen),
+	}
+	theme.InfoColor = compat.AdaptiveColor{
+		Dark:  lipgloss.Color(darkCyan),
+		Light: lipgloss.Color(lightCyan),
+	}
+
+	// Text colors
+	theme.TextColor = compat.AdaptiveColor{
+		Dark:  lipgloss.Color(darkStep12),
+		Light: lipgloss.Color(lightStep12),
+	}
+	theme.TextMutedColor = compat.AdaptiveColor{
+		Dark:  lipgloss.Color(darkStep11),
+		Light: lipgloss.Color(lightStep11),
+	}
+
+	// Background colors
+	theme.BackgroundColor = compat.AdaptiveColor{
+		Dark:  lipgloss.Color(darkStep1),
+		Light: lipgloss.Color(lightStep1),
+	}
+	theme.BackgroundSubtleColor = compat.AdaptiveColor{
+		Dark:  lipgloss.Color(darkStep2),
+		Light: lipgloss.Color(lightStep2),
+	}
+	theme.BackgroundElementColor = compat.AdaptiveColor{
+		Dark:  lipgloss.Color(darkStep3),
+		Light: lipgloss.Color(lightStep3),
+	}
+
+	// Border colors
+	theme.BorderColor = compat.AdaptiveColor{
+		Dark:  lipgloss.Color(darkStep7),
+		Light: lipgloss.Color(lightStep7),
+	}
+	theme.BorderActiveColor = compat.AdaptiveColor{
+		Dark:  lipgloss.Color(darkStep8),
+		Light: lipgloss.Color(lightStep8),
+	}
+	theme.BorderSubtleColor = compat.AdaptiveColor{
+		Dark:  lipgloss.Color(darkStep6),
+		Light: lipgloss.Color(lightStep6),
+	}
+
+	// Diff view colors
+	theme.DiffAddedColor = compat.AdaptiveColor{
+		Dark:  lipgloss.Color("#A7C080"),
+		Light: lipgloss.Color("#8DA101"),
+	}
+	theme.DiffRemovedColor = compat.AdaptiveColor{
+		Dark:  lipgloss.Color("#E67E80"),
+		Light: lipgloss.Color("#F85552"),
+	}
+	theme.DiffContextColor = compat.AdaptiveColor{
+		Dark:  lipgloss.Color("#7A8478"),
+		Light: lipgloss.Color("#A6B0A0"),
+	}
+	theme.DiffHunkHeaderColor = compat.AdaptiveColor{
+		Dark:  lipgloss.Color("#859289"),
+		Light: lipgloss.Color("#939F91"),
+	}
+	theme.DiffHighlightAddedColor = compat.AdaptiveColor{
+		Dark:  lipgloss.Color("#A7C080"),
+		Light: lipgloss.Color("#8DA101"),
+	}
+	theme.DiffHighlightRemovedColor = compat.AdaptiveColor{
+		Dark:  lipgloss.Color("#E67E80"),
+		Light: lipgloss.Color("#F85552"),
+	}
+	theme.DiffAddedBgColor = compat.AdaptiveColor{
+		Dark:  lipgloss.Color("#425047"),
+		Light: lipgloss.Color("#F0F1D2"),
+	}
+	theme.DiffRemovedBgColor = compat.AdaptiveColor{
+		Dark:  lipgloss.Color("#543A48"),
+		Light: lipgloss.Color("#FBE3DA"),
+	}
+	theme.DiffContextBgColor = compat.AdaptiveColor{
+		Dark:  lipgloss.Color(darkStep2),
+		Light: lipgloss.Color(lightStep2),
+	}
+	theme.DiffLineNumberColor = compat.AdaptiveColor{
+		Dark:  lipgloss.Color(darkStep3),
+		Light: lipgloss.Color(lightStep3),
+	}
+	theme.DiffAddedLineNumberBgColor = compat.AdaptiveColor{
+		Dark:  lipgloss.Color("#3A4A3F"),
+		Light: lipgloss.Color("#E8F2D1"),
+	}
+	theme.DiffRemovedLineNumberBgColor = compat.AdaptiveColor{
+		Dark:  lipgloss.Color("#4A3A40"),
+		Light: lipgloss.Color("#FBDAD2"),
+	}
+
+	// Markdown colors
+	theme.MarkdownTextColor = compat.AdaptiveColor{
+		Dark:  lipgloss.Color(darkStep12),
+		Light: lipgloss.Color(lightStep12),
+	}
+	theme.MarkdownHeadingColor = compat.AdaptiveColor{
+		Dark:  lipgloss.Color(darkSecondary),
+		Light: lipgloss.Color(lightSecondary),
+	}
+	theme.MarkdownLinkColor = compat.AdaptiveColor{
+		Dark:  lipgloss.Color(darkPrimary),
+		Light: lipgloss.Color(lightPrimary),
+	}
+	theme.MarkdownLinkTextColor = compat.AdaptiveColor{
+		Dark:  lipgloss.Color(darkCyan),
+		Light: lipgloss.Color(lightCyan),
+	}
+	theme.MarkdownCodeColor = compat.AdaptiveColor{
+		Dark:  lipgloss.Color(darkGreen),
+		Light: lipgloss.Color(lightGreen),
+	}
+	theme.MarkdownBlockQuoteColor = compat.AdaptiveColor{
+		Dark:  lipgloss.Color(darkYellow),
+		Light: lipgloss.Color(lightYellow),
+	}
+	theme.MarkdownEmphColor = compat.AdaptiveColor{
+		Dark:  lipgloss.Color(darkYellow),
+		Light: lipgloss.Color(lightYellow),
+	}
+	theme.MarkdownStrongColor = compat.AdaptiveColor{
+		Dark:  lipgloss.Color(darkAccent),
+		Light: lipgloss.Color(lightAccent),
+	}
+	theme.MarkdownHorizontalRuleColor = compat.AdaptiveColor{
+		Dark:  lipgloss.Color(darkStep11),
+		Light: lipgloss.Color(lightStep11),
+	}
+	theme.MarkdownListItemColor = compat.AdaptiveColor{
+		Dark:  lipgloss.Color(darkPrimary),
+		Light: lipgloss.Color(lightPrimary),
+	}
+	theme.MarkdownListEnumerationColor = compat.AdaptiveColor{
+		Dark:  lipgloss.Color(darkCyan),
+		Light: lipgloss.Color(lightCyan),
+	}
+	theme.MarkdownImageColor = compat.AdaptiveColor{
+		Dark:  lipgloss.Color(darkPrimary),
+		Light: lipgloss.Color(lightPrimary),
+	}
+	theme.MarkdownImageTextColor = compat.AdaptiveColor{
+		Dark:  lipgloss.Color(darkCyan),
+		Light: lipgloss.Color(lightCyan),
+	}
+	theme.MarkdownCodeBlockColor = compat.AdaptiveColor{
+		Dark:  lipgloss.Color(darkStep12),
+		Light: lipgloss.Color(lightStep12),
+	}
+
+	// Syntax highlighting colors
+	theme.SyntaxCommentColor = compat.AdaptiveColor{
+		Dark:  lipgloss.Color(darkStep11),
+		Light: lipgloss.Color(lightStep11),
+	}
+	theme.SyntaxKeywordColor = compat.AdaptiveColor{
+		Dark:  lipgloss.Color(darkPrimary),
+		Light: lipgloss.Color(lightPrimary),
+	}
+	theme.SyntaxFunctionColor = compat.AdaptiveColor{
+		Dark:  lipgloss.Color(darkSecondary),
+		Light: lipgloss.Color(lightSecondary),
+	}
+	theme.SyntaxVariableColor = compat.AdaptiveColor{
+		Dark:  lipgloss.Color(darkRed),
+		Light: lipgloss.Color(lightRed),
+	}
+	theme.SyntaxStringColor = compat.AdaptiveColor{
+		Dark:  lipgloss.Color(darkGreen),
+		Light: lipgloss.Color(lightGreen),
+	}
+	theme.SyntaxNumberColor = compat.AdaptiveColor{
+		Dark:  lipgloss.Color(darkAccent),
+		Light: lipgloss.Color(lightAccent),
+	}
+	theme.SyntaxTypeColor = compat.AdaptiveColor{
+		Dark:  lipgloss.Color(darkYellow),
+		Light: lipgloss.Color(lightYellow),
+	}
+	theme.SyntaxOperatorColor = compat.AdaptiveColor{
+		Dark:  lipgloss.Color(darkCyan),
+		Light: lipgloss.Color(lightCyan),
+	}
+	theme.SyntaxPunctuationColor = compat.AdaptiveColor{
+		Dark:  lipgloss.Color(darkStep12),
+		Light: lipgloss.Color(lightStep12),
+	}
+
+	return theme
+}
+
+func init() {
+	// Register the Everforest theme with the theme manager
+	RegisterTheme("everforest", NewEverforestTheme())
+}