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);
}
}
public void TerminateAt(int index)
{
this.m_text = this.m_text.Remove(index, this.m_text.Length - index);
SCRIPT_LOGATTR[] array = new SCRIPT_LOGATTR[index];
Array.Copy(this.ScriptLogAttr, 0, array, 0, array.Length);
this.ScriptLogAttr = array;
this.m_cachedGlyphData = null;
}
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);
}
public TextRun(string text, ITextRunProps props, TexRunShapeData shapeData)
: this(text, props)
{
if (shapeData != null)
{
this.SCRIPT_ANALYSIS = shapeData.Analysis;
this.ScriptLogAttr = shapeData.ScriptLogAttr;
this.m_cachedFont = shapeData.Font;
this.m_itemizedScriptId = shapeData.ItemizedScriptId;
this.m_runState = shapeData.State;
if (shapeData.GlyphData != null)
{
this.m_cachedGlyphData = new GlyphData(shapeData.GlyphData);
}
}
}
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);
}
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);
}
}
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);
}
