Calculate line number offset

cmd/micro/cellview.go

@@ -96,6 +96,11 @@ func (c *CellView) Draw(buf *Buffer, top, height, left, width int) {
 			if wrap && viewCol >= width {
 				viewLine++
 
+				// If we go too far soft wrapping we have to cut off
+				if viewLine >= height {
+					break
+				}
+
 				nextLine := line[colN:]
 				lineLength := min(StringWidth(string(nextLine), tabsize), width)
 				if len(c.lines[viewLine]) != lineLength {
@@ -104,10 +109,6 @@ func (c *CellView) Draw(buf *Buffer, top, height, left, width int) {
 
 				viewCol = 0
 
-				// If we go too far soft wrapping we have to cut off
-				if viewLine >= height {
-					break
-				}
 			}
 		}
 

cmd/micro/view2.go

@@ -1,11 +1,24 @@
 package main
 
+import "strconv"
+
 func (v *View) DisplayView() {
 	if v.Type == vtLog {
 		// Log views should always follow the cursor...
 		v.Relocate()
 	}
 
+	// We need to know the string length of the largest line number
+	// so we can pad appropriately when displaying line numbers
+	maxLineNumLength := len(strconv.Itoa(v.Buf.NumLines))
+
+	if v.Buf.Settings["ruler"] == true {
+		// + 1 for the little space after the line number
+		v.lineNumOffset = maxLineNumLength + 1
+	} else {
+		v.lineNumOffset = 0
+	}
+
 	height := v.Height
 	width := v.Width
 	left := v.leftCol