From bb460d221d289faa03ec52fe73c04e1aa48d98e9 Mon Sep 17 00:00:00 2001
From: Aniket Teredesai <aniket.teredesai@gmail.com>
Date: Fri, 1 Jul 2022 09:22:23 +0530
Subject: [PATCH] add tcell's dim text style

---
 cell/cell.go                          | 8 ++++++++
 cell/cell_test.go                     | 2 ++
 terminal/tcell/cell_options.go        | 3 ++-
 terminal/tcell/cell_options_test.go   | 5 +++++
 terminal/termbox/cell_options.go      | 5 +++++
 terminal/termbox/cell_options_test.go | 1 +
 6 files changed, 23 insertions(+), 1 deletion(-)

diff --git a/cell/cell.go b/cell/cell.go
index 08a7ab0..ae3db0a 100644
--- a/cell/cell.go
+++ b/cell/cell.go
@@ -31,6 +31,7 @@ type Options struct {
 	Strikethrough bool
 	Inverse       bool
 	Blink         bool
+	Dim           bool
 }
 
 // Set allows existing options to be passed as an option.
@@ -110,3 +111,10 @@ func Blink() Option {
 		co.Blink = true
 	})
 }
+
+// Dim makes the cell foreground color dim. Only works when using the tcell backend.
+func Dim() Option {
+	return option(func(co *Options) {
+		co.Dim = true
+	})
+}
diff --git a/cell/cell_test.go b/cell/cell_test.go
index 1447e3f..3651b25 100644
--- a/cell/cell_test.go
+++ b/cell/cell_test.go
@@ -82,6 +82,7 @@ func TestNewOptions(t *testing.T) {
 				Strikethrough(),
 				Inverse(),
 				Blink(),
+				Dim(),
 			},
 			want: &Options{
 				Bold:          true,
@@ -90,6 +91,7 @@ func TestNewOptions(t *testing.T) {
 				Strikethrough: true,
 				Inverse:       true,
 				Blink:         true,
+				Dim:           true,
 			},
 		},
 	}
diff --git a/terminal/tcell/cell_options.go b/terminal/tcell/cell_options.go
index b23fa3c..a28e005 100644
--- a/terminal/tcell/cell_options.go
+++ b/terminal/tcell/cell_options.go
@@ -70,6 +70,7 @@ func cellOptsToStyle(opts *cell.Options, colorMode terminalapi.ColorMode) tcell.
 		Underline(opts.Underline).
 		StrikeThrough(opts.Strikethrough).
 		Reverse(opts.Inverse).
-		Blink(opts.Blink)
+		Blink(opts.Blink).
+		Dim(opts.Dim)
 	return st
 }
diff --git a/terminal/tcell/cell_options_test.go b/terminal/tcell/cell_options_test.go
index 03b9b92..0b0c229 100644
--- a/terminal/tcell/cell_options_test.go
+++ b/terminal/tcell/cell_options_test.go
@@ -325,6 +325,11 @@ func TestCellOptsToStyle(t *testing.T) {
 			opts:      cell.Options{Blink: true},
 			want:      tcell.StyleDefault.Blink(true),
 		},
+		{
+			colorMode: terminalapi.ColorModeNormal,
+			opts:      cell.Options{Dim: true},
+			want:      tcell.StyleDefault.Dim(true),
+		},
 	}
 
 	for _, tc := range tests {
diff --git a/terminal/termbox/cell_options.go b/terminal/termbox/cell_options.go
index 7386451..bae9f08 100644
--- a/terminal/termbox/cell_options.go
+++ b/terminal/termbox/cell_options.go
@@ -67,6 +67,11 @@ func cellOptsToFg(opts *cell.Options) (tbx.Attribute, error) {
 	if opts.Blink {
 		return 0, errors.New("Termbox: Unsupported attribute: Blink")
 	}
+
+	if opts.Dim {
+		return 0, errors.New("Termbox: Unsupported attribute: Dim")
+	}
+
 	return a, nil
 }
 
diff --git a/terminal/termbox/cell_options_test.go b/terminal/termbox/cell_options_test.go
index e12c3b9..0fe00a2 100644
--- a/terminal/termbox/cell_options_test.go
+++ b/terminal/termbox/cell_options_test.go
@@ -62,6 +62,7 @@ func TestCellFontModifier(t *testing.T) {
 		{cell.Options{Strikethrough: true}, 0, true},
 		{cell.Options{Inverse: true}, tbx.AttrReverse, false},
 		{cell.Options{Blink: true}, 0, true},
+		{cell.Options{Dim: true}, 0, true},
 	}
 
 	for _, tc := range tests {