tsai
/
Avalonia
mirror of https://github.com/AvaloniaUI/Avalonia.git
1
0
Fork 0
Code Issues Projects Releases Wiki Activity
Browse Source

Some more hit testing fixes

pull/7946/head
Benedikt Stebner 5 years ago
parent
050ac5fbba
commit
3e6bc0b48d
4 changed files with 133 additions and 84 deletions
Whitespace
Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL
Unified View
Diff Options
Show Stats Download Patch File Download Diff File
  1. 44
      src/Avalonia.Base/Media/GlyphRun.cs
  2. 2
      src/Avalonia.Base/Media/TextFormatting/TextFormatterImpl.cs
  3. 74
      src/Avalonia.Base/Media/TextFormatting/TextLineImpl.cs
  4. 97
      tests/Avalonia.Skia.UnitTests/Media/TextFormatting/TextLineTests.cs

44
src/Avalonia.Base/Media/GlyphRun.cs
View File

@ -49,7 +49,7 @@ namespace Avalonia.Media
IReadOnlyList<int>? glyphClusters = null, IReadOnlyList<int>? glyphClusters = null,
int biDiLevel = 0) int biDiLevel = 0)
{ {
_glyphTypeface = glyphTypeface; _glyphTypeface = glyphTypeface;
FontRenderingEmSize = fontRenderingEmSize; FontRenderingEmSize = fontRenderingEmSize;
@ -204,7 +204,7 @@ namespace Avalonia.Media
public double GetDistanceFromCharacterHit(CharacterHit characterHit) public double GetDistanceFromCharacterHit(CharacterHit characterHit)
{ {
var characterIndex = characterHit.FirstCharacterIndex + characterHit.TrailingLength; var characterIndex = characterHit.FirstCharacterIndex + characterHit.TrailingLength;
var distance = 0.0; var distance = 0.0;
if (IsLeftToRight) if (IsLeftToRight)
@ -223,7 +223,7 @@ namespace Avalonia.Media
} }
var glyphIndex = FindGlyphIndex(characterIndex); var glyphIndex = FindGlyphIndex(characterIndex);
if (GlyphClusters != null) if (GlyphClusters != null)
{ {
var currentCluster = GlyphClusters[glyphIndex]; var currentCluster = GlyphClusters[glyphIndex];
@ -249,7 +249,7 @@ namespace Avalonia.Media
{ {
//RightToLeft //RightToLeft
var glyphIndex = FindGlyphIndex(characterIndex); var glyphIndex = FindGlyphIndex(characterIndex);
if (GlyphClusters != null) if (GlyphClusters != null)
{ {
if (characterIndex > GlyphClusters[0]) if (characterIndex > GlyphClusters[0])
@ -284,13 +284,13 @@ namespace Avalonia.Media
public CharacterHit GetCharacterHitFromDistance(double distance, out bool isInside) public CharacterHit GetCharacterHitFromDistance(double distance, out bool isInside)
{ {
var characterIndex = 0; var characterIndex = 0;
// Before // Before
if (distance <= 0) if (distance <= 0)
{ {
isInside = false; isInside = false;
if(GlyphClusters != null) if (GlyphClusters != null)
{ {
characterIndex = GlyphClusters[characterIndex]; characterIndex = GlyphClusters[characterIndex];
} }
@ -307,11 +307,11 @@ namespace Avalonia.Media
characterIndex = GlyphIndices.Count - 1; characterIndex = GlyphIndices.Count - 1;
if(GlyphClusters != null) if (GlyphClusters != null)
{ {
characterIndex = GlyphClusters[characterIndex]; characterIndex = GlyphClusters[characterIndex];
} }
var lastCharacterHit = FindNearestCharacterHit(characterIndex, out _); var lastCharacterHit = FindNearestCharacterHit(characterIndex, out _);
return IsLeftToRight ? lastCharacterHit : new CharacterHit(lastCharacterHit.FirstCharacterIndex); return IsLeftToRight ? lastCharacterHit : new CharacterHit(lastCharacterHit.FirstCharacterIndex);
@ -327,7 +327,7 @@ namespace Avalonia.Media
var advance = GetGlyphAdvance(index, out var cluster); var advance = GetGlyphAdvance(index, out var cluster);
characterIndex = cluster; characterIndex = cluster;
if (distance > currentX && distance <= currentX + advance) if (distance > currentX && distance <= currentX + advance)
{ {
break; break;
@ -345,7 +345,7 @@ namespace Avalonia.Media
var advance = GetGlyphAdvance(index, out var cluster); var advance = GetGlyphAdvance(index, out var cluster);
characterIndex = cluster; characterIndex = cluster;
if (currentX - advance < distance) if (currentX - advance < distance)
{ {
break; break;
@ -554,6 +554,16 @@ namespace Avalonia.Media
nextCluster = GlyphClusters[currentIndex]; nextCluster = GlyphClusters[currentIndex];
} }
if (nextCluster < Characters.Start)
{
nextCluster = Characters.Start;
}
if (cluster < Characters.Start)
{
cluster = Characters.Start;
}
int trailingLength; int trailingLength;
if (nextCluster == cluster) if (nextCluster == cluster)
@ -577,7 +587,7 @@ namespace Avalonia.Media
private double GetGlyphAdvance(int index, out int cluster) private double GetGlyphAdvance(int index, out int cluster)
{ {
cluster = GlyphClusters != null ? GlyphClusters[index] : index; cluster = GlyphClusters != null ? GlyphClusters[index] : index;
if (GlyphAdvances != null) if (GlyphAdvances != null)
{ {
return GlyphAdvances[index]; return GlyphAdvances[index];
@ -603,7 +613,7 @@ namespace Avalonia.Media
var widthIncludingTrailingWhitespace = 0d; var widthIncludingTrailingWhitespace = 0d;
var trailingWhitespaceLength = GetTrailingWhitespaceLength(out var newLineLength, out var glyphCount); var trailingWhitespaceLength = GetTrailingWhitespaceLength(out var newLineLength, out var glyphCount);
for (var index = 0; index < GlyphIndices.Count; index++) for (var index = 0; index < GlyphIndices.Count; index++)
{ {
var advance = GetGlyphAdvance(index, out _); var advance = GetGlyphAdvance(index, out _);
@ -615,7 +625,7 @@ namespace Avalonia.Media
if (IsLeftToRight) if (IsLeftToRight)
{ {
for (var index = GlyphIndices.Count - glyphCount; index <GlyphIndices.Count; index++) for (var index = GlyphIndices.Count - glyphCount; index < GlyphIndices.Count; index++)
{ {
width -= GetGlyphAdvance(index, out _); width -= GetGlyphAdvance(index, out _);
} }
@ -677,12 +687,12 @@ namespace Avalonia.Media
if (codepointIndex < 0) if (codepointIndex < 0)
{ {
trailingWhitespaceLength = _characters.Length; trailingWhitespaceLength = _characters.Length;
glyphCount = GlyphClusters.Count; glyphCount = GlyphClusters.Count;
break; break;
} }
var codepoint = Codepoint.ReadAt(_characters, codepointIndex, out _); var codepoint = Codepoint.ReadAt(_characters, codepointIndex, out _);
if (!codepoint.IsWhiteSpace) if (!codepoint.IsWhiteSpace)
@ -696,7 +706,7 @@ namespace Avalonia.Media
} }
trailingWhitespaceLength++; trailingWhitespaceLength++;
glyphCount++; glyphCount++;
} }
} }

2
src/Avalonia.Base/Media/TextFormatting/TextFormatterImpl.cs
View File

@ -544,7 +544,7 @@ namespace Avalonia.Media.TextFormatting
var textRuns = new List<DrawableTextRun> { new ShapedTextCharacters(shapedBuffer, properties) }; var textRuns = new List<DrawableTextRun> { new ShapedTextCharacters(shapedBuffer, properties) };
return new TextLineImpl(textRuns, firstTextSourceIndex, 1, double.PositiveInfinity, paragraphProperties, flowDirection).FinalizeLine(); return new TextLineImpl(textRuns, firstTextSourceIndex, 0, double.PositiveInfinity, paragraphProperties, flowDirection).FinalizeLine();
} }
/// <summary> /// <summary>

74
src/Avalonia.Base/Media/TextFormatting/TextLineImpl.cs
View File

@ -183,6 +183,7 @@ namespace Avalonia.Media.TextFormatting
case ShapedTextCharacters shapedRun: case ShapedTextCharacters shapedRun:
{ {
characterHit = shapedRun.GlyphRun.GetCharacterHitFromDistance(distance, out _); characterHit = shapedRun.GlyphRun.GetCharacterHitFromDistance(distance, out _);
break; break;
} }
default: default:
@ -426,31 +427,42 @@ namespace Avalonia.Media.TextFormatting
if (nextRun != null) if (nextRun != null)
{ {
if (nextRun.Text.Start < currentRun.Text.Start && firstTextSourceCharacterIndex + textLength < currentRun.Text.End) switch (nextRun)
{ {
goto skip; case ShapedTextCharacters when currentRun is ShapedTextCharacters:
} {
if (nextRun.Text.Start < currentRun.Text.Start && firstTextSourceCharacterIndex + textLength < currentRun.Text.End)
{
goto skip;
}
if (currentRun.Text.Start >= firstTextSourceCharacterIndex + textLength) if (currentRun.Text.Start >= firstTextSourceCharacterIndex + textLength)
{ {
goto skip; goto skip;
} }
if (currentRun.Text.Start > nextRun.Text.Start && currentRun.Text.Start < firstTextSourceCharacterIndex) if (currentRun.Text.Start > nextRun.Text.Start && currentRun.Text.Start < firstTextSourceCharacterIndex)
{ {
goto skip; goto skip;
} }
if (currentRun.Text.End < firstTextSourceCharacterIndex) if (currentRun.Text.End < firstTextSourceCharacterIndex)
{ {
goto skip; goto skip;
} }
goto noop; goto noop;
}
default:
{
goto noop;
}
}
skip: skip:
{ {
startX += currentRun.Size.Width; startX += currentRun.Size.Width;
currentPosition += currentRun.TextSourceLength;
} }
continue; continue;
@ -460,7 +472,6 @@ namespace Avalonia.Media.TextFormatting
} }
} }
var endX = startX; var endX = startX;
var endOffset = 0d; var endOffset = 0d;
@ -520,11 +531,13 @@ namespace Avalonia.Media.TextFormatting
} }
default: default:
{ {
if (firstTextSourceCharacterIndex + textLength >= currentRun.Text.Start + currentRun.Text.Length) if (currentPosition + currentRun.TextSourceLength <= firstTextSourceCharacterIndex + textLength)
{ {
endX += currentRun.Size.Width; endX += currentRun.Size.Width;
} }
currentPosition += currentRun.TextSourceLength;
break; break;
} }
} }
@ -538,7 +551,9 @@ namespace Avalonia.Media.TextFormatting
if (lastDirection == currentDirection && result.Count > 0 && MathUtilities.AreClose(currentRect.Right, startX)) if (lastDirection == currentDirection && result.Count > 0 && MathUtilities.AreClose(currentRect.Right, startX))
{ {
var textBounds = new TextBounds(currentRect.WithWidth(currentRect.Width + width), currentDirection); currentRect = currentRect.WithWidth(currentRect.Width + width);
var textBounds = new TextBounds(currentRect, currentDirection);
result[result.Count - 1] = textBounds; result[result.Count - 1] = textBounds;
} }
@ -551,21 +566,9 @@ namespace Avalonia.Media.TextFormatting
if (currentDirection == FlowDirection.LeftToRight) if (currentDirection == FlowDirection.LeftToRight)
{ {
if (nextRun != null) if (currentPosition >= firstTextSourceCharacterIndex + textLength)
{
if (nextRun.Text.Start > currentRun.Text.Start && nextRun.Text.Start >= firstTextSourceCharacterIndex + textLength)
{
break;
}
currentPosition = nextRun.Text.End;
}
else
{ {
if (currentPosition >= firstTextSourceCharacterIndex + textLength) break;
{
break;
}
} }
} }
else else
@ -575,10 +578,7 @@ namespace Avalonia.Media.TextFormatting
break; break;
} }
if (currentPosition != currentRun.Text.Start) endX += currentRun.Size.Width - endOffset;
{
endX += currentRun.Size.Width - endOffset;
}
} }
lastDirection = currentDirection; lastDirection = currentDirection;

97
tests/Avalonia.Skia.UnitTests/Media/TextFormatting/TextLineTests.cs
View File

@ -70,12 +70,12 @@ namespace Avalonia.Skia.UnitTests.Media.TextFormatting
} }
} }
} }
[Fact] [Fact]
public void Should_Get_Next_Caret_CharacterHit_Bidi() public void Should_Get_Next_Caret_CharacterHit_Bidi()
{ {
const string text = "אבג 1 ABC"; const string text = "אבג 1 ABC";
using (Start()) using (Start())
{ {
var defaultProperties = new GenericTextRunProperties(Typeface.Default); var defaultProperties = new GenericTextRunProperties(Typeface.Default);
@ -90,7 +90,7 @@ namespace Avalonia.Skia.UnitTests.Media.TextFormatting
var clusters = new List<int>(); var clusters = new List<int>();
foreach (var textRun in textLine.TextRuns.OrderBy(x=> x.Text.Start)) foreach (var textRun in textLine.TextRuns.OrderBy(x => x.Text.Start))
{ {
var shapedRun = (ShapedTextCharacters)textRun; var shapedRun = (ShapedTextCharacters)textRun;
@ -98,7 +98,7 @@ namespace Avalonia.Skia.UnitTests.Media.TextFormatting
shapedRun.ShapedBuffer.GlyphClusters.Reverse() : shapedRun.ShapedBuffer.GlyphClusters.Reverse() :
shapedRun.ShapedBuffer.GlyphClusters); shapedRun.ShapedBuffer.GlyphClusters);
} }
var nextCharacterHit = new CharacterHit(0, clusters[1] - clusters[0]); var nextCharacterHit = new CharacterHit(0, clusters[1] - clusters[0]);
foreach (var cluster in clusters) foreach (var cluster in clusters)
@ -122,7 +122,7 @@ namespace Avalonia.Skia.UnitTests.Media.TextFormatting
public void Should_Get_Previous_Caret_CharacterHit_Bidi() public void Should_Get_Previous_Caret_CharacterHit_Bidi()
{ {
const string text = "אבג 1 ABC"; const string text = "אבג 1 ABC";
using (Start()) using (Start())
{ {
var defaultProperties = new GenericTextRunProperties(Typeface.Default); var defaultProperties = new GenericTextRunProperties(Typeface.Default);
@ -137,7 +137,7 @@ namespace Avalonia.Skia.UnitTests.Media.TextFormatting
var clusters = new List<int>(); var clusters = new List<int>();
foreach (var textRun in textLine.TextRuns.OrderBy(x=> x.Text.Start)) foreach (var textRun in textLine.TextRuns.OrderBy(x => x.Text.Start))
{ {
var shapedRun = (ShapedTextCharacters)textRun; var shapedRun = (ShapedTextCharacters)textRun;
@ -147,13 +147,13 @@ namespace Avalonia.Skia.UnitTests.Media.TextFormatting
} }
clusters.Reverse(); clusters.Reverse();
var nextCharacterHit = new CharacterHit(text.Length - 1); var nextCharacterHit = new CharacterHit(text.Length - 1);
foreach (var cluster in clusters) foreach (var cluster in clusters)
{ {
var currentCaretIndex = nextCharacterHit.FirstCharacterIndex + nextCharacterHit.TrailingLength; var currentCaretIndex = nextCharacterHit.FirstCharacterIndex + nextCharacterHit.TrailingLength;
Assert.Equal(cluster, currentCaretIndex); Assert.Equal(cluster, currentCaretIndex);
nextCharacterHit = textLine.GetPreviousCaretCharacterHit(nextCharacterHit); nextCharacterHit = textLine.GetPreviousCaretCharacterHit(nextCharacterHit);
@ -168,7 +168,7 @@ namespace Avalonia.Skia.UnitTests.Media.TextFormatting
Assert.Equal(lastCharacterHit.TrailingLength, nextCharacterHit.TrailingLength); Assert.Equal(lastCharacterHit.TrailingLength, nextCharacterHit.TrailingLength);
} }
} }
[InlineData("𐐷𐐷𐐷𐐷𐐷")] [InlineData("𐐷𐐷𐐷𐐷𐐷")]
[InlineData("01234567🎉\n")] [InlineData("01234567🎉\n")]
[InlineData("𐐷1234")] [InlineData("𐐷1234")]
@ -324,7 +324,7 @@ namespace Avalonia.Skia.UnitTests.Media.TextFormatting
} }
} }
Assert.Equal(currentDistance,textLine.GetDistanceFromCharacterHit(new CharacterHit(s_multiLineText.Length))); Assert.Equal(currentDistance, textLine.GetDistanceFromCharacterHit(new CharacterHit(s_multiLineText.Length)));
} }
} }
@ -371,7 +371,7 @@ namespace Avalonia.Skia.UnitTests.Media.TextFormatting
yield return CreateData("01234 01234", 58, TextTrimming.WordEllipsis, "01234\u2026"); yield return CreateData("01234 01234", 58, TextTrimming.WordEllipsis, "01234\u2026");
yield return CreateData("01234", 9, TextTrimming.CharacterEllipsis, "\u2026"); yield return CreateData("01234", 9, TextTrimming.CharacterEllipsis, "\u2026");
yield return CreateData("01234", 2, TextTrimming.CharacterEllipsis, ""); yield return CreateData("01234", 2, TextTrimming.CharacterEllipsis, "");
object[] CreateData(string text, double width, TextTrimming mode, string expected) object[] CreateData(string text, double width, TextTrimming mode, string expected)
{ {
return new object[] return new object[]
@ -424,7 +424,7 @@ namespace Avalonia.Skia.UnitTests.Media.TextFormatting
{ {
var defaultProperties = new GenericTextRunProperties(Typeface.Default); var defaultProperties = new GenericTextRunProperties(Typeface.Default);
var textSource = new DrawableRunTextSource(); var textSource = new DrawableRunTextSource();
var formatter = new TextFormatterImpl(); var formatter = new TextFormatterImpl();
var textLine = var textLine =
@ -471,7 +471,7 @@ namespace Avalonia.Skia.UnitTests.Media.TextFormatting
Assert.Equal(4, textLine.TextRuns.Count); Assert.Equal(4, textLine.TextRuns.Count);
var currentHit = textLine.GetPreviousCaretCharacterHit(new CharacterHit(3,1)); var currentHit = textLine.GetPreviousCaretCharacterHit(new CharacterHit(3, 1));
Assert.Equal(3, currentHit.FirstCharacterIndex); Assert.Equal(3, currentHit.FirstCharacterIndex);
Assert.Equal(0, currentHit.TrailingLength); Assert.Equal(0, currentHit.TrailingLength);
@ -552,11 +552,11 @@ namespace Avalonia.Skia.UnitTests.Media.TextFormatting
switch (textSourceIndex) switch (textSourceIndex)
{ {
case 0: case 0:
return new CustomDrawableRun(); return new CustomDrawableRun();
case 1: case 1:
return new TextCharacters(new ReadOnlySlice<char>(Text.AsMemory(), 1, 1, 1), new GenericTextRunProperties(Typeface.Default)); return new TextCharacters(new ReadOnlySlice<char>(Text.AsMemory(), 1, 1, 1), new GenericTextRunProperties(Typeface.Default));
case 2: case 2:
return new CustomDrawableRun(); return new CustomDrawableRun();
case 3: case 3:
return new TextCharacters(new ReadOnlySlice<char>(Text.AsMemory(), 3, 1, 3), new GenericTextRunProperties(Typeface.Default)); return new TextCharacters(new ReadOnlySlice<char>(Text.AsMemory(), 3, 1, 3), new GenericTextRunProperties(Typeface.Default));
default: default:
@ -564,14 +564,14 @@ namespace Avalonia.Skia.UnitTests.Media.TextFormatting
} }
} }
} }
private class CustomDrawableRun : DrawableTextRun private class CustomDrawableRun : DrawableTextRun
{ {
public override Size Size => new(14, 14); public override Size Size => new(14, 14);
public override double Baseline => 14; public override double Baseline => 14;
public override void Draw(DrawingContext drawingContext, Point origin) public override void Draw(DrawingContext drawingContext, Point origin)
{ {
} }
} }
@ -587,29 +587,29 @@ namespace Avalonia.Skia.UnitTests.Media.TextFormatting
var shapedTextRuns = textLine.TextRuns.Cast<ShapedTextCharacters>().ToList(); var shapedTextRuns = textLine.TextRuns.Cast<ShapedTextCharacters>().ToList();
var lastCluster = -1; var lastCluster = -1;
foreach (var textRun in shapedTextRuns) foreach (var textRun in shapedTextRuns)
{ {
var shapedBuffer = textRun.ShapedBuffer; var shapedBuffer = textRun.ShapedBuffer;
var currentClusters = shapedBuffer.GlyphClusters.ToList(); var currentClusters = shapedBuffer.GlyphClusters.ToList();
foreach (var currentCluster in currentClusters) foreach (var currentCluster in currentClusters)
{ {
if (lastCluster == currentCluster) if (lastCluster == currentCluster)
{ {
continue; continue;
} }
glyphClusters.Add(currentCluster); glyphClusters.Add(currentCluster);
lastCluster = currentCluster; lastCluster = currentCluster;
} }
} }
return glyphClusters; return glyphClusters;
} }
private static List<Rect> BuildRects(TextLine textLine) private static List<Rect> BuildRects(TextLine textLine)
{ {
var rects = new List<Rect>(); var rects = new List<Rect>();
@ -624,11 +624,11 @@ namespace Avalonia.Skia.UnitTests.Media.TextFormatting
foreach (var textRun in shapedTextRuns) foreach (var textRun in shapedTextRuns)
{ {
var shapedBuffer = textRun.ShapedBuffer; var shapedBuffer = textRun.ShapedBuffer;
for (var index = 0; index < shapedBuffer.GlyphAdvances.Count; index++) for (var index = 0; index < shapedBuffer.GlyphAdvances.Count; index++)
{ {
var currentCluster = shapedBuffer.GlyphClusters[index]; var currentCluster = shapedBuffer.GlyphClusters[index];
var advance = shapedBuffer.GlyphAdvances[index]; var advance = shapedBuffer.GlyphAdvances[index];
if (lastCluster != currentCluster) if (lastCluster != currentCluster)
@ -642,10 +642,10 @@ namespace Avalonia.Skia.UnitTests.Media.TextFormatting
rects.Remove(rect); rects.Remove(rect);
rect = rect.WithWidth(rect.Width + advance); rect = rect.WithWidth(rect.Width + advance);
rects.Add(rect); rects.Add(rect);
} }
currentX += advance; currentX += advance;
lastCluster = currentCluster; lastCluster = currentCluster;
@ -655,8 +655,43 @@ namespace Avalonia.Skia.UnitTests.Media.TextFormatting
return rects; return rects;
} }
[Fact] [Fact]
public void Should_Get_TextBounds() public void Should_Get_TextBounds_Mixed()
{
using (Start())
{
var defaultProperties = new GenericTextRunProperties(Typeface.Default);
var text = "0123".AsMemory();
var shaperOption = new TextShaperOptions(Typeface.Default.GlyphTypeface, 10, 0, CultureInfo.CurrentCulture);
var textRuns = new List<TextRun>
{
new ShapedTextCharacters(TextShaper.Current.ShapeText(new ReadOnlySlice<char>(text), shaperOption), defaultProperties),
new CustomDrawableRun(),
new ShapedTextCharacters(TextShaper.Current.ShapeText(new ReadOnlySlice<char>(text, text.Length + 1, text.Length), shaperOption), defaultProperties),
new CustomDrawableRun(),
new ShapedTextCharacters(TextShaper.Current.ShapeText(new ReadOnlySlice<char>(text, text.Length * 2 + 2, text.Length), shaperOption), defaultProperties),
new CustomDrawableRun(),
};
var textSource = new FixedRunsTextSource(textRuns);
var formatter = new TextFormatterImpl();
var textLine =
formatter.FormatLine(textSource, 0, double.PositiveInfinity,
new GenericTextParagraphProperties(defaultProperties));
var textBounds = textLine.GetTextBounds(0, text.Length * 3 + 3);
Assert.Equal(1, textBounds.Count);
Assert.Equal(textLine.WidthIncludingTrailingWhitespace, textBounds.Sum(x => x.Rectangle.Width));
}
}
[Fact]
public void Should_Get_TextBounds_BiDi()
{ {
using (Start()) using (Start())
{ {
@ -673,7 +708,7 @@ namespace Avalonia.Skia.UnitTests.Media.TextFormatting
new ShapedTextCharacters(TextShaper.Current.ShapeText(new ReadOnlySlice<char>(text, text.Length * 3, text.Length), ltrOptions), defaultProperties) new ShapedTextCharacters(TextShaper.Current.ShapeText(new ReadOnlySlice<char>(text, text.Length * 3, text.Length), ltrOptions), defaultProperties)
}; };
var textSource = new FixedRunsTextSource(textRuns); var textSource = new FixedRunsTextSource(textRuns);
var formatter = new TextFormatterImpl(); var formatter = new TextFormatterImpl();
@ -700,12 +735,16 @@ namespace Avalonia.Skia.UnitTests.Media.TextFormatting
public TextRun? GetTextRun(int textSourceIndex) public TextRun? GetTextRun(int textSourceIndex)
{ {
var currentPosition = 0;
foreach (var textRun in _textRuns) foreach (var textRun in _textRuns)
{ {
if(textRun.Text.Start == textSourceIndex) if (currentPosition == textSourceIndex)
{ {
return textRun; return textRun;
} }
currentPosition += textRun.TextSourceLength;
} }
return null; return null;

Write Preview
Loading…
Cancel
Save