public static void DrawTextRun(TextRun run, Win32DCSafeHandle hdc, FontCache fontCache, int x, int baselineY, Underline underline)
{
uint crColor = 0u;
try
{
uint colorInt = run.ColorInt;
if (underline != null)
{
underline.Draw(hdc, (int)((double)run.UnderlineHeight * 0.085), colorInt);
}
crColor = Win32.SetTextColor(hdc, colorInt);
GlyphData glyphData = run.GetGlyphData(hdc, fontCache);
GlyphShapeData glyphScriptShapeData = glyphData.GlyphScriptShapeData;
CachedFont cachedFont = run.GetCachedFont(hdc, fontCache);
fontCache.SelectFontObject(hdc, cachedFont.Hfont);
int num = Win32.ScriptTextOut(hdc, ref cachedFont.ScriptCache, x, baselineY, 4u, IntPtr.Zero, ref run.SCRIPT_ANALYSIS, IntPtr.Zero, 0, glyphScriptShapeData.Glyphs, glyphScriptShapeData.GlyphCount, glyphData.Advances, (int[])null, glyphData.GOffsets);
if (Win32.Failed(num))
{
Marshal.ThrowExceptionForHR(num);
}
}
finally
{
crColor = Win32.SetTextColor(hdc, crColor);
}
}
private void TextScriptPlace(Win32DCSafeHandle hdc, bool fontSelected, FontCache fontCache)
{
int num = 0;
GlyphShapeData glyphScriptShapeData = this.m_cachedGlyphData.GlyphScriptShapeData;
if (fontSelected)
{
num = Win32.ScriptPlace(hdc, ref this.m_cachedFont.ScriptCache, glyphScriptShapeData.Glyphs, glyphScriptShapeData.GlyphCount, glyphScriptShapeData.VisAttrs, ref this.SCRIPT_ANALYSIS, this.m_cachedGlyphData.RawAdvances, this.m_cachedGlyphData.RawGOffsets, ref this.m_cachedGlyphData.ABC);
}
else
{
num = Win32.ScriptPlace(IntPtr.Zero, ref this.m_cachedFont.ScriptCache, glyphScriptShapeData.Glyphs, glyphScriptShapeData.GlyphCount, glyphScriptShapeData.VisAttrs, ref this.SCRIPT_ANALYSIS, this.m_cachedGlyphData.RawAdvances, this.m_cachedGlyphData.RawGOffsets, ref this.m_cachedGlyphData.ABC);
if (num == -2147483638)
{
fontCache.SelectFontObject(hdc, this.m_cachedFont.Hfont);
num = Win32.ScriptPlace(hdc, ref this.m_cachedFont.ScriptCache, glyphScriptShapeData.Glyphs, glyphScriptShapeData.GlyphCount, glyphScriptShapeData.VisAttrs, ref this.SCRIPT_ANALYSIS, this.m_cachedGlyphData.RawAdvances, this.m_cachedGlyphData.RawGOffsets, ref this.m_cachedGlyphData.ABC);
}
}
if (Win32.Failed(num))
{
Marshal.ThrowExceptionForHR(num);
}
if (this.m_cachedGlyphData.ABC.Width > 0 && this.m_text.Length == 1 && TextBox.IsWhitespaceControlChar(this.m_text[0]))
{
this.m_cachedGlyphData.ABC.SetToZeroWidth();
}
}
public TextBoxContext MapPoint(Graphics g, PointF pt, out bool atEndOfLine)
{
TextBoxContext textBoxContext = null;
atEndOfLine = false;
TextRun textRun = default(TextRun);
int iX = default(int);
textBoxContext = this.GetParagraphAndRunIndex(g, (int)pt.X, (int)pt.Y, out textRun, out iX, out atEndOfLine);
if (textRun != null)
{
GlyphData glyphData = textRun.GlyphData;
GlyphShapeData glyphScriptShapeData = glyphData.GlyphScriptShapeData;
if (glyphData != null && textRun.CharacterCount > 0)
{
int num = 0;
int num2 = 0;
int num3 = Win32.ScriptXtoCP(iX, textRun.CharacterCount, glyphScriptShapeData.GlyphCount, glyphScriptShapeData.Clusters, glyphScriptShapeData.VisAttrs, glyphData.Advances, ref textRun.SCRIPT_ANALYSIS, ref num, ref num2);
if (Win32.Failed(num3))
{
Marshal.ThrowExceptionForHR(num3);
}
if (textRun.ScriptAnalysis.fLayoutRTL == 1)
{
if (num == -1)
{
textBoxContext.TextRunCharacterIndex += textRun.CharacterCount;
}
else if (pt.X <= 0.0)
{
TextBoxContext textBoxContext2 = textBoxContext;
textBoxContext2.TextRunCharacterIndex = textBoxContext2.TextRunCharacterIndex;
}
else
{
textBoxContext.TextRunCharacterIndex += num + num2;
}
}
else
{
textBoxContext.TextRunCharacterIndex += num + num2;
}
}
}
if (textBoxContext == null)
{
textBoxContext = new TextBoxContext();
}
return(textBoxContext);
}
private CaretInfo MapLocation(Win32DCSafeHandle hdc, TextBoxContext location, bool relativeToRun, bool moveCaretToNextLine, out TextRun run)
{
CaretInfo caretInfo = null;
run = null;
int lineYOffset = default(int);
int lineHeight = default(int);
int iCP = default(int);
bool isFirstLine = default(bool);
bool isLastLine = default(bool);
Point paragraphAndRunCoordinates = this.GetParagraphAndRunCoordinates(hdc, location, moveCaretToNextLine, out lineYOffset, out lineHeight, out run, out iCP, out isFirstLine, out isLastLine);
if (run != null)
{
GlyphData glyphData = run.GlyphData;
GlyphShapeData glyphScriptShapeData = glyphData.GlyphScriptShapeData;
int num = 0;
if (glyphData != null && run.CharacterCount > 0)
{
int num2 = Win32.ScriptCPtoX(iCP, false, run.CharacterCount, glyphScriptShapeData.GlyphCount, glyphScriptShapeData.Clusters, glyphScriptShapeData.VisAttrs, glyphData.Advances, ref run.SCRIPT_ANALYSIS, ref num);
if (Win32.Failed(num2))
{
Marshal.ThrowExceptionForHR(num2);
}
}
caretInfo = new CaretInfo();
CachedFont cachedFont = run.GetCachedFont(hdc, this.FontCache);
caretInfo.Height = cachedFont.GetHeight(hdc, this.FontCache);
caretInfo.Ascent = cachedFont.GetAscent(hdc, this.FontCache);
caretInfo.Descent = cachedFont.GetDescent(hdc, this.FontCache);
caretInfo.LineHeight = lineHeight;
caretInfo.LineYOffset = lineYOffset;
caretInfo.IsFirstLine = isFirstLine;
caretInfo.IsLastLine = isLastLine;
List <Paragraph> rTParagraph = this.RTParagraphs;
int y = paragraphAndRunCoordinates.Y - caretInfo.Ascent;
if (relativeToRun)
{
caretInfo.Position = new Point(num, y);
}
else
{
caretInfo.Position = new Point(paragraphAndRunCoordinates.X + num, y);
}
}
return(caretInfo);
}
static ScriptProperties()
{
IntPtr ptr = default(IntPtr);
int num = default(int);
int num2 = Win32.ScriptGetProperties(out ptr, out num);
if (Win32.Failed(num2))
{
Marshal.ThrowExceptionForHR(num2);
}
ScriptProperties.ScriptsProps = new ScriptProperties[num];
for (int i = 0; i < num; i++)
{
IntPtr ptr2 = Marshal.ReadIntPtr(ptr, i * IntPtr.Size);
long value = Marshal.ReadInt64(ptr2);
ScriptProperties.ScriptsProps[i] = new ScriptProperties(value);
}
}
public int[] GetLogicalWidths(Win32DCSafeHandle hdc, FontCache fontCache)
{
GlyphData glyphData = this.GetGlyphData(hdc, fontCache);
int[] array = new int[this.m_text.Length];
int num = Win32.ScriptGetLogicalWidths(ref this.SCRIPT_ANALYSIS, this.m_text.Length, glyphData.GlyphScriptShapeData.GlyphCount, glyphData.ScaledAdvances, glyphData.GlyphScriptShapeData.Clusters, glyphData.GlyphScriptShapeData.VisAttrs, array);
if (Win32.Failed(num))
{
Marshal.ThrowExceptionForHR(num);
}
if (glyphData.Scaled)
{
for (int i = 0; i < array.Length; i++)
{
array[i] = glyphData.Scale(array[i]);
}
}
return(array);
}
public static void DrawClippedTextRun(TextRun run, Win32DCSafeHandle hdc, FontCache fontCache, int x, int baselineY, uint fontColorOverride, Rectangle clipRect, Underline underline)
{
uint crColor = 0u;
IntPtr intPtr = IntPtr.Zero;
try
{
if (underline != null)
{
underline.Draw(hdc, (int)((double)run.UnderlineHeight * 0.085), fontColorOverride);
}
RECT rECT = default(RECT);
rECT.left = clipRect.Left;
rECT.right = clipRect.Right;
rECT.top = clipRect.Top;
rECT.bottom = clipRect.Bottom;
crColor = Win32.SetTextColor(hdc, fontColorOverride);
GlyphData glyphData = run.GetGlyphData(hdc, fontCache);
GlyphShapeData glyphScriptShapeData = glyphData.GlyphScriptShapeData;
CachedFont cachedFont = run.GetCachedFont(hdc, fontCache);
fontCache.SelectFontObject(hdc, cachedFont.Hfont);
intPtr = Marshal.AllocHGlobal(Marshal.SizeOf(rECT));
Marshal.StructureToPtr(rECT, intPtr, false);
int num = Win32.ScriptTextOut(hdc, ref cachedFont.ScriptCache, x, baselineY, 4u, intPtr, ref run.SCRIPT_ANALYSIS, IntPtr.Zero, 0, glyphScriptShapeData.Glyphs, glyphScriptShapeData.GlyphCount, glyphData.Advances, (int[])null, glyphData.GOffsets);
if (Win32.Failed(num))
{
Marshal.ThrowExceptionForHR(num);
}
}
finally
{
if (intPtr != IntPtr.Zero)
{
Marshal.FreeHGlobal(intPtr);
}
crColor = Win32.SetTextColor(hdc, crColor);
}
}
private static void AnalyzeForBreakPositions(List <TextRun> itemRuns, string itemsText)
{
if (itemsText.Length != 0)
{
SCRIPT_ANALYSIS sCRIPT_ANALYSIS = itemRuns[0].SCRIPT_ANALYSIS;
SCRIPT_LOGATTR[] array = new SCRIPT_LOGATTR[itemsText.Length];
int num = Win32.ScriptBreak(itemsText, itemsText.Length, ref sCRIPT_ANALYSIS, array);
if (Win32.Failed(num))
{
Marshal.ThrowExceptionForHR(num);
}
int num2 = 0;
for (int i = 0; i < itemRuns.Count; i++)
{
TextRun textRun = itemRuns[i];
int length = textRun.Text.Length;
SCRIPT_LOGATTR[] array2 = new SCRIPT_LOGATTR[length];
Array.Copy(array, num2, array2, 0, length);
textRun.ScriptLogAttr = array2;
num2 += length;
}
}
}
public void ScriptItemize(RPLFormat.Directions direction)
{
SCRIPT_ITEM[] array = null;
int num = 0;
StringBuilder stringBuilder = new StringBuilder();
string nextTextBlock;
while ((nextTextBlock = this.GetNextTextBlock()) != null)
{
if (nextTextBlock.Length > 0)
{
SCRIPT_CONTROL sCRIPT_CONTROL = default(SCRIPT_CONTROL);
sCRIPT_CONTROL.dword1 = 16777216u;
ScriptState scriptState = new ScriptState();
scriptState.uBidiLevel = ((direction != 0) ? 1 : 0);
SCRIPT_STATE as_SCRIPT_STATE = scriptState.GetAs_SCRIPT_STATE();
SCRIPT_ITEM[] array2 = new SCRIPT_ITEM[nextTextBlock.Length + 1];
int num2 = 0;
int num3 = Win32.ScriptItemize(nextTextBlock, nextTextBlock.Length, array2.Length, ref sCRIPT_CONTROL, ref as_SCRIPT_STATE, array2, ref num2);
if (Win32.Failed(num3))
{
Marshal.ThrowExceptionForHR(num3);
}
if (array == null)
{
array = array2;
num = num2;
}
else
{
SCRIPT_ITEM[] array3 = new SCRIPT_ITEM[num + array2.Length];
Array.Copy(array, 0, array3, 0, num);
for (int i = 0; i < array2.Length; i++)
{
SCRIPT_ITEM sCRIPT_ITEM = array2[i];
sCRIPT_ITEM.iCharPos += stringBuilder.Length;
array3[num + i] = sCRIPT_ITEM;
}
array = array3;
num += num2;
}
stringBuilder.Append(nextTextBlock);
}
}
if (num > 0)
{
List <SCRIPT_ITEM> list = new List <SCRIPT_ITEM>();
int num4 = -1;
bool flag = false;
for (int j = 0; j < num; j++)
{
int bidiLevel = ScriptState.GetBidiLevel(array[j].analysis.state.word1);
int bidiLevel2 = ScriptState.GetBidiLevel(array[j + 1].analysis.state.word1);
if (bidiLevel == bidiLevel2 && this.CanMergeItemizedRuns(array[j].iCharPos, array[j + 1].iCharPos - 1, stringBuilder))
{
if (num4 < 0)
{
num4 = j;
}
}
else
{
if (num4 >= 0)
{
list.Add(array[num4]);
}
list.Add(array[j]);
num4 = -1;
}
}
if (num4 >= 0)
{
list.Add(array[num4]);
}
list.Add(array[num]);
array = null;
num = list.Count - 1;
if (num == 1)
{
for (int k = 0; k < this.m_runs.Count; k++)
{
this.m_runs[k].SCRIPT_ANALYSIS = list[0].analysis;
}
Paragraph.AnalyzeForBreakPositions(this.m_runs, stringBuilder.ToString());
}
else
{
List <TextRun> list2 = new List <TextRun>();
for (int l = 0; l < num; l++)
{
int iCharPos = list[l].iCharPos;
int endingParaCharIndex = list[l + 1].iCharPos - 1;
List <TextRun> collection = this.ExtractRuns(iCharPos, endingParaCharIndex, list[l].analysis);
list2.AddRange(collection);
}
this.m_runs = list2;
}
}
}
public void ShapeAndPlace(Win32DCSafeHandle hdc, FontCache fontCache)
{
bool verticalFont = false;
if (fontCache.AllowVerticalFont)
{
verticalFont = this.HasEastAsianChars;
}
if (this.m_cachedFont == null)
{
this.m_cachedFont = fontCache.GetFont(this.m_textRunProps, this.GetCharset(), verticalFont);
this.FallbackFont = false;
}
CachedFont cachedFont = this.m_cachedFont;
bool flag = false;
bool flag2 = false;
string text = this.m_text;
int num = Convert.ToInt32((double)text.Length * 1.5 + 16.0);
this.m_cachedGlyphData = new GlyphData(num, text.Length);
GlyphShapeData glyphScriptShapeData = this.m_cachedGlyphData.GlyphScriptShapeData;
int num2 = Win32.ScriptShape(IntPtr.Zero, ref this.m_cachedFont.ScriptCache, text, text.Length, num, ref this.SCRIPT_ANALYSIS, glyphScriptShapeData.Glyphs, glyphScriptShapeData.Clusters, glyphScriptShapeData.VisAttrs, ref glyphScriptShapeData.GlyphCount);
if (num2 == -2147483638)
{
flag = true;
fontCache.SelectFontObject(hdc, this.m_cachedFont.Hfont);
num2 = Win32.ScriptShape(hdc, ref this.m_cachedFont.ScriptCache, text, text.Length, num, ref this.SCRIPT_ANALYSIS, glyphScriptShapeData.Glyphs, glyphScriptShapeData.Clusters, glyphScriptShapeData.VisAttrs, ref glyphScriptShapeData.GlyphCount);
}
if (num2 == -2147024882)
{
num = text.Length * 3;
this.m_cachedGlyphData = new GlyphData(num, text.Length);
glyphScriptShapeData = this.m_cachedGlyphData.GlyphScriptShapeData;
num2 = Win32.ScriptShape(hdc, ref this.m_cachedFont.ScriptCache, text, text.Length, num, ref this.SCRIPT_ANALYSIS, glyphScriptShapeData.Glyphs, glyphScriptShapeData.Clusters, glyphScriptShapeData.VisAttrs, ref glyphScriptShapeData.GlyphCount);
}
if (!this.FallbackFont)
{
if (num2 == -2147220992)
{
int num3 = 0;
num3 = ((!this.m_itemizedScriptId.HasValue) ? this.ScriptAnalysis.eScript : this.m_itemizedScriptId.Value);
this.m_cachedFont = fontCache.GetFallbackFont(this.m_textRunProps, this.GetCharset(), num3, verticalFont);
fontCache.SelectFontObject(hdc, this.m_cachedFont.Hfont);
flag = true;
flag2 = true;
num2 = Win32.ScriptShape(hdc, ref this.m_cachedFont.ScriptCache, text, text.Length, num, ref this.SCRIPT_ANALYSIS, glyphScriptShapeData.Glyphs, glyphScriptShapeData.Clusters, glyphScriptShapeData.VisAttrs, ref glyphScriptShapeData.GlyphCount);
}
else if (this.HasEastAsianChars)
{
if (!flag)
{
fontCache.SelectFontObject(hdc, this.m_cachedFont.Hfont);
flag = true;
}
Win32.SCRIPT_FONTPROPERTIES sCRIPT_FONTPROPERTIES = default(Win32.SCRIPT_FONTPROPERTIES);
sCRIPT_FONTPROPERTIES.cBytes = 16;
num2 = Win32.ScriptGetFontProperties(hdc, ref this.m_cachedFont.ScriptCache, ref sCRIPT_FONTPROPERTIES);
short wgDefault = sCRIPT_FONTPROPERTIES.wgDefault;
int num4 = 0;
num4 = ((!this.m_itemizedScriptId.HasValue) ? this.ScriptAnalysis.eScript : this.m_itemizedScriptId.Value);
int num5 = 0;
while (num5 < glyphScriptShapeData.GlyphCount)
{
if (glyphScriptShapeData.Glyphs[num5] != wgDefault)
{
num5++;
continue;
}
this.m_cachedFont = fontCache.GetFallbackFont(this.m_textRunProps, this.GetCharset(), num4, verticalFont);
this.m_cachedFont.DefaultGlyph = wgDefault;
fontCache.SelectFontObject(hdc, this.m_cachedFont.Hfont);
flag = true;
flag2 = true;
num2 = Win32.ScriptShape(hdc, ref this.m_cachedFont.ScriptCache, text, text.Length, num, ref this.SCRIPT_ANALYSIS, glyphScriptShapeData.Glyphs, glyphScriptShapeData.Clusters, glyphScriptShapeData.VisAttrs, ref glyphScriptShapeData.GlyphCount);
break;
}
}
}
if (num2 == -2147220992)
{
this.m_cachedFont = cachedFont;
if (!flag || flag2)
{
Win32ObjectSafeHandle win32ObjectSafeHandle = Win32.SelectObject(hdc, this.m_cachedFont.Hfont);
win32ObjectSafeHandle.SetHandleAsInvalid();
flag = true;
}
flag2 = false;
this.SetUndefinedScript();
num2 = Win32.ScriptShape(hdc, ref this.m_cachedFont.ScriptCache, text, text.Length, num, ref this.SCRIPT_ANALYSIS, glyphScriptShapeData.Glyphs, glyphScriptShapeData.Clusters, glyphScriptShapeData.VisAttrs, ref glyphScriptShapeData.GlyphCount);
}
if (Win32.Failed(num2))
{
Marshal.ThrowExceptionForHR(num2);
}
if (flag2)
{
this.FallbackFont = true;
}
this.m_cachedGlyphData.TrimToGlyphCount();
this.m_cachedGlyphData.ScaleFactor = this.m_cachedFont.ScaleFactor;
this.TextScriptPlace(hdc, flag, fontCache);
}
public void ScriptLayout(Win32DCSafeHandle hdc, FontCache fontCache)
{
if (this.m_visualRuns == null)
{
int count = this.m_logicalRuns.Count;
if (count != 0)
{
byte[] array = new byte[count];
int[] array2 = new int[count];
for (int i = 0; i < count; i++)
{
array[i] = (byte)this.m_logicalRuns[i].ScriptAnalysis.s.uBidiLevel;
}
int num = Win32.ScriptLayout(count, array, null, array2);
if (Win32.Failed(num))
{
Marshal.ThrowExceptionForHR(num);
}
this.m_visualRuns = new List <TextRun>(count);
for (int j = 0; j < count; j++)
{
this.m_visualRuns.Add(null);
}
for (int k = 0; k < count; k++)
{
this.m_visualRuns[array2[k]] = this.m_logicalRuns[k];
}
int num2 = 0;
int l = -1;
for (int m = 0; m < count; m++)
{
TextRun textRun = this.m_visualRuns[m];
textRun.UnderlineHeight = 0;
if (textRun.TextRunProperties.TextDecoration == RPLFormat.TextDecorations.Underline)
{
if (l < 0)
{
l = m;
}
int height = textRun.GetHeight(hdc, fontCache);
if (height > num2)
{
num2 = height;
}
}
else if (l >= 0)
{
for (; l < m; l++)
{
this.m_visualRuns[l].UnderlineHeight = num2;
}
num2 = 0;
l = -1;
}
}
if (l >= 0)
{
for (; l < count; l++)
{
this.m_visualRuns[l].UnderlineHeight = num2;
}
}
}
}
}
