Begin tab implementation

cmd/micro/display/tabbar.go

@@ -0,0 +1,57 @@
+package display
+
+import (
+	"log"
+
+	"github.com/zyedidia/micro/cmd/micro/config"
+	"github.com/zyedidia/micro/cmd/micro/screen"
+)
+
+type TabWindow struct {
+	Names   []string
+	Active  int
+	width   int
+	hscroll int
+	y       int
+}
+
+func NewTabWindow(w int, y int) *TabWindow {
+	tw := new(TabWindow)
+	tw.width = w
+	tw.y = y
+	return tw
+}
+
+func (w *TabWindow) Display() {
+	x := -w.hscroll
+
+	draw := func(r rune, n int) {
+		for i := 0; i < n; i++ {
+			screen.Screen.SetContent(x, w.y, r, nil, config.DefStyle.Reverse(true))
+			x++
+			log.Println(x)
+		}
+	}
+
+	for i, n := range w.Names {
+		if i == w.Active {
+			draw('[', 1)
+		}
+		for _, c := range n {
+			draw(c, 1)
+		}
+		if i == w.Active {
+			draw(']', 1)
+			draw(' ', 3)
+		} else {
+			draw(' ', 4)
+		}
+		if x >= w.width {
+			break
+		}
+	}
+
+	if x < w.width {
+		draw(' ', w.width-x)
+	}
+}