internal 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
{
underline?.Draw(hdc, (int)((double)run.UnderlineHeight * 0.085), fontColorOverride);
RECT structure = default(RECT);
structure.left = clipRect.Left;
structure.right = clipRect.Right;
structure.top = clipRect.Top;
structure.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(structure));
Marshal.StructureToPtr(structure, intPtr, fDeleteOld: 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, null, glyphData.GOffsets);
if (Win32.Failed(num))
{
Marshal.ThrowExceptionForHR(num);
}
}
finally
{
if (intPtr != IntPtr.Zero)
{
Marshal.FreeHGlobal(intPtr);
}
crColor = Win32.SetTextColor(hdc, crColor);
}
}
internal void TerminateAt(int index)
{
m_text = m_text.Remove(index, m_text.Length - index);
SCRIPT_LOGATTR[] array = new SCRIPT_LOGATTR[index];
Array.Copy(ScriptLogAttr, 0, array, 0, array.Length);
ScriptLogAttr = array;
m_cachedGlyphData = null;
}
internal TextRun(string text, ITextRunProps props, TexRunShapeData shapeData)
: this(text, props)
{
if (shapeData != null)
{
SCRIPT_ANALYSIS = shapeData.Analysis;
ScriptLogAttr = shapeData.ScriptLogAttr;
m_cachedFont = shapeData.Font;
m_itemizedScriptId = shapeData.ItemizedScriptId;
m_runState = shapeData.State;
if (shapeData.GlyphData != null)
{
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;
int lineHeight;
int textRunCharacterIndex;
bool isFirstLine;
bool isLastLine;
Point paragraphAndRunCoordinates = GetParagraphAndRunCoordinates(hdc, location, moveCaretToNextLine, out lineYOffset, out lineHeight, out run, out textRunCharacterIndex, out isFirstLine, out isLastLine);
if (run != null)
{
GlyphData glyphData = run.GlyphData;
GlyphShapeData glyphScriptShapeData = glyphData.GlyphScriptShapeData;
int piX = 0;
if (glyphData != null && run.CharacterCount > 0)
{
int num = Win32.ScriptCPtoX(textRunCharacterIndex, fTrailing: false, run.CharacterCount, glyphScriptShapeData.GlyphCount, glyphScriptShapeData.Clusters, glyphScriptShapeData.VisAttrs, glyphData.Advances, ref run.SCRIPT_ANALYSIS, ref piX);
if (Win32.Failed(num))
{
Marshal.ThrowExceptionForHR(num);
}
}
caretInfo = new CaretInfo();
CachedFont cachedFont = run.GetCachedFont(hdc, FontCache);
caretInfo.Height = cachedFont.GetHeight(hdc, FontCache);
caretInfo.Ascent = cachedFont.GetAscent(hdc, FontCache);
caretInfo.Descent = cachedFont.GetDescent(hdc, FontCache);
caretInfo.LineHeight = lineHeight;
caretInfo.LineYOffset = lineYOffset;
caretInfo.IsFirstLine = isFirstLine;
caretInfo.IsLastLine = isLastLine;
_ = RTParagraphs;
int y = paragraphAndRunCoordinates.Y - caretInfo.Ascent;
if (relativeToRun)
{
caretInfo.Position = new Point(piX, y);
}
else
{
caretInfo.Position = new Point(paragraphAndRunCoordinates.X + piX, y);
}
}
return(caretInfo);
}
internal TextBoxContext MapPoint(Graphics g, PointF pt, out bool atEndOfLine)
{
TextBoxContext textBoxContext = null;
atEndOfLine = false;
textBoxContext = GetParagraphAndRunIndex(g, (int)pt.X, (int)pt.Y, out TextRun run, out int runX, out atEndOfLine);
if (run != null)
{
GlyphData glyphData = run.GlyphData;
GlyphShapeData glyphScriptShapeData = glyphData.GlyphScriptShapeData;
if (glyphData != null && run.CharacterCount > 0)
{
int piCP = 0;
int piTrailing = 0;
int num = Win32.ScriptXtoCP(runX, run.CharacterCount, glyphScriptShapeData.GlyphCount, glyphScriptShapeData.Clusters, glyphScriptShapeData.VisAttrs, glyphData.Advances, ref run.SCRIPT_ANALYSIS, ref piCP, ref piTrailing);
if (Win32.Failed(num))
{
Marshal.ThrowExceptionForHR(num);
}
if (run.ScriptAnalysis.fLayoutRTL == 1)
{
if (piCP == -1)
{
textBoxContext.TextRunCharacterIndex += run.CharacterCount;
}
else if (pt.X <= 0f)
{
TextBoxContext textBoxContext2 = textBoxContext;
textBoxContext2.TextRunCharacterIndex = textBoxContext2.TextRunCharacterIndex;
}
else
{
textBoxContext.TextRunCharacterIndex += piCP + piTrailing;
}
}
else
{
textBoxContext.TextRunCharacterIndex += piCP + piTrailing;
}
}
}
if (textBoxContext == null)
{
textBoxContext = new TextBoxContext();
}
return(textBoxContext);
}
internal int[] GetLogicalWidths(Win32DCSafeHandle hdc, FontCache fontCache)
{
GlyphData glyphData = GetGlyphData(hdc, fontCache);
int[] array = new int[m_text.Length];
int num = Win32.ScriptGetLogicalWidths(ref SCRIPT_ANALYSIS, 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);
}
internal static void DrawTextRun(TextRun run, Win32DCSafeHandle hdc, FontCache fontCache, int x, int baselineY, Underline underline)
{
uint crColor = 0u;
try
{
uint colorInt = run.ColorInt;
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, null, glyphData.GOffsets);
if (Win32.Failed(num))
{
Marshal.ThrowExceptionForHR(num);
}
}
finally
{
crColor = Win32.SetTextColor(hdc, crColor);
}
}
internal void ShapeAndPlace(Win32DCSafeHandle hdc, FontCache fontCache)
{
bool verticalFont = false;
if (fontCache.AllowVerticalFont)
{
verticalFont = HasEastAsianChars;
}
if (m_cachedFont == null)
{
m_cachedFont = fontCache.GetFont(m_textRunProps, GetCharset(), verticalFont);
FallbackFont = false;
}
CachedFont cachedFont = m_cachedFont;
bool flag = false;
bool flag2 = false;
string text = m_text;
int num = Convert.ToInt32((double)text.Length * 1.5 + 16.0);
m_cachedGlyphData = new GlyphData(num, text.Length);
GlyphShapeData glyphScriptShapeData = m_cachedGlyphData.GlyphScriptShapeData;
int num2 = Win32.ScriptShape(IntPtr.Zero, ref m_cachedFont.ScriptCache, text, text.Length, num, ref SCRIPT_ANALYSIS, glyphScriptShapeData.Glyphs, glyphScriptShapeData.Clusters, glyphScriptShapeData.VisAttrs, ref glyphScriptShapeData.GlyphCount);
if (num2 == -2147483638)
{
flag = true;
fontCache.SelectFontObject(hdc, m_cachedFont.Hfont);
num2 = Win32.ScriptShape(hdc, ref m_cachedFont.ScriptCache, text, text.Length, num, ref SCRIPT_ANALYSIS, glyphScriptShapeData.Glyphs, glyphScriptShapeData.Clusters, glyphScriptShapeData.VisAttrs, ref glyphScriptShapeData.GlyphCount);
}
if (num2 == -2147024882)
{
num = text.Length * 3;
m_cachedGlyphData = new GlyphData(num, text.Length);
glyphScriptShapeData = m_cachedGlyphData.GlyphScriptShapeData;
num2 = Win32.ScriptShape(hdc, ref m_cachedFont.ScriptCache, text, text.Length, num, ref SCRIPT_ANALYSIS, glyphScriptShapeData.Glyphs, glyphScriptShapeData.Clusters, glyphScriptShapeData.VisAttrs, ref glyphScriptShapeData.GlyphCount);
}
if (!FallbackFont)
{
if (num2 == -2147220992)
{
int num3 = 0;
m_cachedFont = fontCache.GetFallbackFont(script: (!m_itemizedScriptId.HasValue) ? ScriptAnalysis.eScript : m_itemizedScriptId.Value, textRunProps: m_textRunProps, charset: GetCharset(), verticalFont: verticalFont);
fontCache.SelectFontObject(hdc, m_cachedFont.Hfont);
flag = true;
flag2 = true;
num2 = Win32.ScriptShape(hdc, ref m_cachedFont.ScriptCache, text, text.Length, num, ref SCRIPT_ANALYSIS, glyphScriptShapeData.Glyphs, glyphScriptShapeData.Clusters, glyphScriptShapeData.VisAttrs, ref glyphScriptShapeData.GlyphCount);
}
else if (HasEastAsianChars)
{
if (!flag)
{
fontCache.SelectFontObject(hdc, m_cachedFont.Hfont);
flag = true;
}
Win32.SCRIPT_FONTPROPERTIES sfp = default(Win32.SCRIPT_FONTPROPERTIES);
sfp.cBytes = 16;
num2 = Win32.ScriptGetFontProperties(hdc, ref m_cachedFont.ScriptCache, ref sfp);
short wgDefault = sfp.wgDefault;
int num4 = 0;
num4 = ((!m_itemizedScriptId.HasValue) ? ScriptAnalysis.eScript : m_itemizedScriptId.Value);
for (int i = 0; i < glyphScriptShapeData.GlyphCount; i++)
{
if (glyphScriptShapeData.Glyphs[i] == wgDefault)
{
m_cachedFont = fontCache.GetFallbackFont(m_textRunProps, GetCharset(), num4, verticalFont);
m_cachedFont.DefaultGlyph = wgDefault;
fontCache.SelectFontObject(hdc, m_cachedFont.Hfont);
flag = true;
flag2 = true;
num2 = Win32.ScriptShape(hdc, ref m_cachedFont.ScriptCache, text, text.Length, num, ref SCRIPT_ANALYSIS, glyphScriptShapeData.Glyphs, glyphScriptShapeData.Clusters, glyphScriptShapeData.VisAttrs, ref glyphScriptShapeData.GlyphCount);
break;
}
}
}
}
if (num2 == -2147220992)
{
m_cachedFont = cachedFont;
if (!flag || flag2)
{
Win32.SelectObject(hdc, m_cachedFont.Hfont).SetHandleAsInvalid();
flag = true;
}
flag2 = false;
SetUndefinedScript();
num2 = Win32.ScriptShape(hdc, ref m_cachedFont.ScriptCache, text, text.Length, num, ref SCRIPT_ANALYSIS, glyphScriptShapeData.Glyphs, glyphScriptShapeData.Clusters, glyphScriptShapeData.VisAttrs, ref glyphScriptShapeData.GlyphCount);
}
if (Win32.Failed(num2))
{
Marshal.ThrowExceptionForHR(num2);
}
if (flag2)
{
FallbackFont = true;
}
m_cachedGlyphData.TrimToGlyphCount();
m_cachedGlyphData.ScaleFactor = m_cachedFont.ScaleFactor;
TextScriptPlace(hdc, flag, fontCache);
}