Add experimental support for 24-bit colors

2 files changed, 28 insertions, 0 deletions

diff --git a/src/tui/tui.go b/src/tui/tui.go
index 859eed7a..11ac1e7d 100644
--- a/src/tui/tui.go
+++ b/src/tui/tui.go
@@ -1,6 +1,7 @@
 package tui
 
 import (
+	"strconv"
 	"time"
 )
 
@@ -121,6 +122,13 @@ type ColorPair struct {
 	id int16
 }
 
+func HexToColor(rrggbb string) Color {
+	r, _ := strconv.ParseInt(rrggbb[1:3], 16, 0)
+	g, _ := strconv.ParseInt(rrggbb[3:5], 16, 0)
+	b, _ := strconv.ParseInt(rrggbb[5:7], 16, 0)
+	return Color((1 << 24) + (r << 16) + (g << 8) + b)
+}
+
 func NewColorPair(fg Color, bg Color) ColorPair {
 	return ColorPair{fg, bg, -1}
 }
diff --git a/src/tui/tui_test.go b/src/tui/tui_test.go
new file mode 100644
index 00000000..3ba9bf35
--- /dev/null
+++ b/src/tui/tui_test.go
@@ -0,0 +1,20 @@
+package tui
+
+import "testing"
+
+func TestHexToColor(t *testing.T) {
+	assert := func(expr string, r, g, b int) {
+		color := HexToColor(expr)
+		if !color.is24() ||
+			int((color>>16)&0xff) != r ||
+			int((color>>8)&0xff) != g ||
+			int((color)&0xff) != b {
+			t.Fail()
+		}
+	}
+
+	assert("#ff0000", 255, 0, 0)
+	assert("#010203", 1, 2, 3)
+	assert("#102030", 16, 32, 48)
+	assert("#ffffff", 255, 255, 255)
+}