public static void ExtDrawTextRun(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);
CachedFont cachedFont = run.GetCachedFont(hdc, fontCache);
fontCache.SelectFontObject(hdc, cachedFont.Hfont);
int[] lpDx = null;
uint fuOptions = 0u;
if (run.ScriptAnalysis.fRTL == 1)
{
fuOptions = 128u;
}
if (!Win32.ExtTextOut(hdc, x, baselineY, fuOptions, IntPtr.Zero, run.Text, (uint)run.Text.Length, lpDx))
{
Marshal.ThrowExceptionForHR(Marshal.GetHRForLastWin32Error());
}
}
finally
{
crColor = Win32.SetTextColor(hdc, crColor);
}
}
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();
}
}
private void Initialize(Win32DCSafeHandle hdc, FontCache fontCache)
{
fontCache.SelectFontObject(hdc, this.m_hfont);
Win32.GetTextMetrics(hdc, out this.m_textMetric);
if (this.ScaleFactor != 1.0)
{
this.m_textMetric.tmHeight = this.Scale(this.m_textMetric.tmHeight);
this.m_textMetric.tmAscent = this.Scale(this.m_textMetric.tmAscent);
this.m_textMetric.tmDescent = this.Scale(this.m_textMetric.tmDescent);
this.m_textMetric.tminternalLeading = this.Scale(this.m_textMetric.tminternalLeading);
}
this.m_initialized = true;
}
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);
}
