The new alignment method works

layout.go

@@ -114,17 +114,12 @@ type LineLayout struct {
 // is crossed. The word which would have crossed over the limit will not be
 // processed.
 func DoLine (text []rune, face font.Face, wrap bool, width fixed.Int26_6) (line LineLayout, remaining []rune) {
-	// TODO: remove all the positioning logic from here to avoid redundancy
-	// with LineLayout.Align, because that should get called anyways 100% of
-	// the time to account for tab stops
 	remaining    = text
 	x           := fixed.Int26_6(0)
-	lastWord    := WordLayout { }
 	isFirstWord := true
 	for {
 		// process one word
 		word, remainingFromWord := DoWord(remaining, face)
-		word.X = x
 		x += word.Width
 
 		// if we have gone over the preferred width, stop processing
@@ -138,7 +133,6 @@ func DoLine (text []rune, face font.Face, wrap bool, width fixed.Int26_6) (line
 
 		// if the word actually has contents, add it
 		if word.Runes != nil {
-			lastWord   = word
 			line.Words = append(line.Words, word)
 		}
 
@@ -154,9 +148,12 @@ func DoLine (text []rune, face font.Face, wrap bool, width fixed.Int26_6) (line
 	}
 
 	// set the width of the line's content.
-	line.ContentWidth = lastWord.X + lastWord.Width
 	line.Width = width
-	line.SpaceAfter = lastWord.SpaceAfter
+	if len(line.Words) > 0 {
+		lastWord := line.Words[len(line.Words) - 1]
+		line.ContentWidth = x - lastWord.SpaceAfter
+		line.SpaceAfter   = lastWord.SpaceAfter
+	}
 	return
 }
 
@@ -192,16 +189,16 @@ func (line *LineLayout) Align (align Align, tabWidth fixed.Int26_6) {
 			line.Words[index].X += leftOffset
 		}
 	}
-
 }
 
 // assume line has content > 0
 func (line *LineLayout) contract (tabWidth fixed.Int26_6) {
 	x := fixed.Int26_6(0)
-	for _, word := range line.Words {
+	for index, word := range line.Words {
 		word.X = x
 		x += word.Width
 		x += word.SpaceAfter
+		line.Words[index] = word
 	}
 	lastWord := line.Words[len(line.Words) - 1]
 	line.ContentWidth = lastWord.X + lastWord.Width
@@ -210,7 +207,7 @@ func (line *LineLayout) contract (tabWidth fixed.Int26_6) {
 
 // assume line has content > 0
 func (line *LineLayout) justify (tabWidth fixed.Int26_6) {
-	if len(line.Words) < 2 {
+	if len(line.Words) <= 1 {
 		line.Align(AlignStart, tabWidth)
 		return
 	}