Merge pull request #5014 from andydotxyz/fix/4998

Correctly shape input before truncating

Author: andydotxyz

widget/hyperlink_test.go

@@ -204,7 +204,7 @@ func TestHyperlink_Truncate(t *testing.T) {
 	hyperlink.Truncation = fyne.TextTruncateEllipsis
 	hyperlink.Refresh()
 	texts = richTextRenderTexts(&hyperlink.provider)
-	assert.Equal(t, "TestingWi…", texts[0].Text)
+	assert.Equal(t, "TestingWit…", texts[0].Text)
 }
 
 func TestHyperlink_CreateRendererDoesNotAffectSize(t *testing.T) {

widget/richtext.go

@@ -1120,10 +1120,11 @@ func truncateLimit(s string, text *canvas.Text, limit int, ellipsis []rune) (int
 		RunStart:  0,
 		RunEnd:    len(ellipsis),
 		Direction: di.DirectionLTR,
-		Face:      face.Fonts.ResolveFace('…'),
+		Face:      face.Fonts.ResolveFace(ellipsis[0]),
 		Size:      float32ToFixed266(text.TextSize),
 	}
 	shaper := &shaping.HarfbuzzShaper{}
+	segmenter := &shaping.Segmenter{}
 
 	conf := shaping.WrapConfig{}
 	conf = conf.WithTruncator(shaper, in)
@@ -1133,12 +1134,19 @@ func truncateLimit(s string, text *canvas.Text, limit int, ellipsis []rune) (int
 
 	in.Text = runes
 	in.RunEnd = len(runes)
-	out := shaper.Shape(in)
+	ins := segmenter.Split(in, face.Fonts)
+	outs := make([]shaping.Output, len(ins))
+	for i, in := range ins {
+		outs[i] = shaper.Shape(in)
+	}
 
-	l.Prepare(conf, runes, shaping.NewSliceIterator([]shaping.Output{out}))
+	l.Prepare(conf, runes, shaping.NewSliceIterator(outs))
 	wrapped, done := l.WrapNextLine(limit)
 
-	count := wrapped.Line[0].Runes.Count
+	count := 0
+	for _, run := range wrapped.Line {
+		count += run.Runes.Count
+	}
 	full := done && count == len(runes)
 	if !full && len(ellipsis) > 0 {
 		count--

widget/richtext_test.go

@@ -575,7 +575,7 @@ func TestText_lineBounds(t *testing.T) {
 			text:  "foobar foobar",
 			trunc: fyne.TextTruncateEllipsis,
 			want: [][2]int{
-				{0, 8},
+				{0, 9},
 			},
 			ellipses: 1,
 		},
@@ -688,8 +688,8 @@ func TestText_lineBounds(t *testing.T) {
 			trunc: fyne.TextTruncateEllipsis,
 			want: [][2]int{
 				{0, 6},
-				{7, 15},
-				{28, 36},
+				{7, 16},
+				{28, 37},
 			},
 			ellipses: 2,
 		},
@@ -757,8 +757,8 @@ func TestText_lineBounds(t *testing.T) {
 			trunc: fyne.TextTruncateEllipsis,
 			want: [][2]int{
 				{0, 6},
-				{7, 14},
-				{26, 33},
+				{7, 15},
+				{26, 34},
 				{39, 39},
 			},
 			ellipses: 2,
@@ -909,8 +909,8 @@ func TestText_lineBounds(t *testing.T) {
 			trunc: fyne.TextTruncateEllipsis,
 			want: [][2]int{
 				{0, 6},
-				{7, 15},
-				{28, 36},
+				{7, 16},
+				{28, 37},
 				{42, 42},
 			},
 			ellipses: 2,
@@ -1041,7 +1041,7 @@ func TestText_lineBounds_variable_char_width(t *testing.T) {
 			text:  "iiiiiiiiiimmmmmmmmmm",
 			trunc: fyne.TextTruncateEllipsis,
 			want: [][2]int{
-				{0, 8},
+				{0, 9},
 			},
 		},
 		{

widget/select_test.go

@@ -100,7 +100,7 @@ func TestSelect_ClipValue(t *testing.T) {
 
 	r2 := cache.Renderer(text)
 	assert.Equal(t, 1, len(r2.Objects()))
-	assert.Equal(t, "some…", r2.Objects()[0].(*canvas.Text).Text)
+	assert.Equal(t, "some …", r2.Objects()[0].(*canvas.Text).Text)
 }
 
 func TestSelect_Disable(t *testing.T) {