internal LsErr GetRunStrikethroughInfo(
IntPtr pols, // Line Layout context
Plsrun plsrun, // plsrun
ref LsHeights lsHeights, // run height
LsTFlow textFlow, // text flow direction
ref LsStInfo stInfo // [out] result strikethrough info
)
{
LsErr lserr = LsErr.None;
LSRun lsrun = null;
try
{
lsrun = Draw.CurrentLine.GetRun(plsrun);
Debug.Assert(
!TextStore.IsContent(plsrun) || lsrun.Type == Plsrun.Text || lsrun.Type == Plsrun.InlineObject,
"Invalid run"
);
stInfo = new LsStInfo();
double strikeThroughPositionInEm;
double strikeThroughThicknessInEm;
GetLSRunStrikethroughMetrics(lsrun, out strikeThroughPositionInEm, out strikeThroughThicknessInEm);
stInfo.cNumberOfLines = 1;
stInfo.dvpLowerStrikethroughOffset = (int)Math.Round(lsrun.EmSize * strikeThroughPositionInEm);
stInfo.dvpLowerStrikethroughSize = (int)Math.Round(lsrun.EmSize * strikeThroughThicknessInEm);
Debug.Assert(stInfo.dvpLowerStrikethroughSize >= 0);
if (stInfo.dvpLowerStrikethroughSize <= 0)
stInfo.dvpLowerStrikethroughSize = 1;
}
catch (Exception e)
{
SaveException(e, plsrun, lsrun);
lserr = LsErr.ClientAbort;
}
catch
{
SaveNonCLSException("GetRunStrikethroughInfo", plsrun, lsrun);
lserr = LsErr.ClientAbort;
}
return lserr;
}
internal LsErr GetRunUnderlineInfo(
IntPtr pols, // Line Layout context
Plsrun plsrun, // plsrun
ref LsHeights lsHeights, // run height
LsTFlow textFlow, // text flow direction
ref LsULInfo ulInfo // [out] result underline info
)
{
LsErr lserr = LsErr.None;
LSRun lsrun = null;
try
{
lsrun = Draw.CurrentLine.GetRun(plsrun);
Debug.Assert(
!TextStore.IsContent(plsrun) || lsrun.Type == Plsrun.Text || lsrun.Type == Plsrun.InlineObject,
"Invalid run"
);
ulInfo = new LsULInfo();
double underlinePositionInEm;
double underlineThicknessInEm;
if (lsrun.Shapeable != null)
{
underlinePositionInEm = lsrun.Shapeable.UnderlinePosition;
underlineThicknessInEm = lsrun.Shapeable.UnderlineThickness;
}
else
{
underlinePositionInEm = lsrun.RunProp.Typeface.UnderlinePosition;
underlineThicknessInEm = lsrun.RunProp.Typeface.UnderlineThickness;
}
ulInfo.cNumberOfLines = 1;
ulInfo.dvpFirstUnderlineOffset = (int)Math.Round(lsrun.EmSize * -underlinePositionInEm);
ulInfo.dvpFirstUnderlineSize = (int)Math.Round(lsrun.EmSize * underlineThicknessInEm);
Debug.Assert(ulInfo.dvpFirstUnderlineSize >= 0);
if (ulInfo.dvpFirstUnderlineSize <= 0)
ulInfo.dvpFirstUnderlineSize = 1;
}
catch (Exception e)
{
SaveException(e, plsrun, lsrun);
lserr = LsErr.ClientAbort;
}
catch
{
SaveNonCLSException("GetAutoNumberInfo", plsrun, lsrun);
lserr = LsErr.ClientAbort;
}
return lserr;
}
internal unsafe LsErr EnumTab(
IntPtr pols, // pointer to context
Plsrun plsrun, // plsrun
int cpFirst, // first cp of the dnode run
char *pwchText, // a single tab character
char tabLeader, // a single tab leader character
LsTFlow lstFlow, // flow direction
int fReverseOrder, // flag for reverse order enumeration
int fGeometryProvided, // flag for providing geometry information
ref LSPOINT pptStart, // [in] logical start of the run (iff geometryProvided)
ref LsHeights heights, // [in] height (iff geometryProvided)
int dupRun // width of the run
)
{
if (cpFirst < 0)
{
return LsErr.None;
}
LsErr lserr = LsErr.None;
LSRun lsrun = null;
try
{
TextMetrics.FullTextLine currentLine = Draw.CurrentLine;
lsrun = currentLine.GetRun(plsrun);
GlyphRun glyphRun = null;
if (lsrun.Type == Plsrun.Text)
{
int charWidth = 0;
lsrun.Shapeable.GetAdvanceWidthsUnshaped(
&tabLeader,
1,
TextFormatterImp.ToIdeal,
&charWidth
);
glyphRun = ComputeUnshapedGlyphRun(
lsrun,
lstFlow,
currentLine.Formatter,
false, // glyph run origin not provided at enumeration time
pptStart,
charWidth,
1,
&tabLeader,
&charWidth,
currentLine.IsJustified
);
}
if (glyphRun != null)
{
IndexedGlyphRuns.Add(
new IndexedGlyphRun(
currentLine.GetExternalCp(cpFirst),
1, // dcp is 1 for a Tab character
glyphRun
)
);
}
}
catch (Exception e)
{
SaveException(e, plsrun, lsrun);
lserr = LsErr.ClientAbort;
}
catch
{
SaveNonCLSException("EnumTab", plsrun, lsrun);
lserr = LsErr.ClientAbort;
}
return lserr;
}
internal unsafe LsErr EnumText(
IntPtr pols, // ls context
Plsrun plsrun, // plsrun
int cpFirst, // first cp of the ls dnode
int dcp, // dcp of the dnode
char *pwchText, // characters for glyph run
int cchText, // length of characters
LsTFlow lstFlow, // flow direction
int fReverseOrder, // flag for reverse order enumeration
int fGeometryProvided, // flag for providing geometry
ref LSPOINT pptStart, // [in] logical start of the run
ref LsHeights pheights, // [in] height (iff geometryProvided)
int dupRun, // width of the run
int glyphBaseRun, // flag for glyph based run
int *piCharAdvances, // character advance widths (iff !glyphBaseRun)
ushort *puClusterMap, // cluster map (iff glyphBaseRun)
ushort *characterProperties, // character properties (iff glyphBaseRun)
ushort *puGlyphs, // glyph indices (iff glyphBaseRun)
int *piJustifiedGlyphAdvances, // glyph advances (iff glyphBaseRun)
GlyphOffset *piiGlyphOffsets, // glyph offsets (iff glyphBaseRun)
uint *piGlyphProperties, // glyph properties (iff glyphProperties)
int glyphCount // glyph count
)
{
Debug.Assert(fGeometryProvided == 0, "Line enumeration doesn't need geometry information");
if (cpFirst < 0)
{
return LsErr.None;
}
LsErr lserr = LsErr.None;
LSRun lsrun = null;
try
{
TextMetrics.FullTextLine currentLine = Draw.CurrentLine;
lsrun = currentLine.GetRun(plsrun);
GlyphRun glyphRun = null;
if (glyphBaseRun != 0)
{
if (glyphCount > 0)
{
glyphRun = ComputeShapedGlyphRun(
lsrun,
currentLine.Formatter,
false, // glyph run origin not provided
pptStart,
cchText,
pwchText,
puClusterMap,
glyphCount,
puGlyphs,
piJustifiedGlyphAdvances,
piiGlyphOffsets,
currentLine.IsJustified
);
}
}
else if (cchText > 0)
{
dupRun = 0;
for (int i = 0; i < cchText; i++)
{
dupRun += piCharAdvances[i];
}
glyphRun = ComputeUnshapedGlyphRun(
lsrun,
lstFlow,
currentLine.Formatter,
false, // glyph run origin not provided at enumeration
pptStart,
dupRun,
cchText,
pwchText,
piCharAdvances,
currentLine.IsJustified
);
}
if (glyphRun != null)
{
IndexedGlyphRuns.Add(
new IndexedGlyphRun(
currentLine.GetExternalCp(cpFirst),
dcp,
glyphRun
)
);
}
}
catch (Exception e)
{
SaveException(e, plsrun, lsrun);
lserr = LsErr.ClientAbort;
}
catch
{
SaveNonCLSException("EnumText", plsrun, lsrun);
lserr = LsErr.ClientAbort;
}
return lserr;
}
internal unsafe LsErr DrawGlyphs(
IntPtr pols, // Line Layout context
Plsrun plsrun, // plsrun
char* pwchText, // character string
ushort* puClusterMap, // character-to-cluster map
ushort* puCharProperties, // character properties
int charCount, // character count
ushort* puGlyphs, // glyph indices
int* piJustifiedGlyphAdvances, // justified glyph advances
int* piGlyphAdvances, // original ideal glyph advances
GlyphOffset* piiGlyphOffsets, // glyph offsets
uint* piGlyphProperties, // glyph properties
LsExpType* plsExpType, // glyph expansion types
int glyphCount, // glyph count
LsTFlow textFlow, // text flow
uint displayMode, // draw transparent or opaque
ref LSPOINT ptRun, // [in] display position (at baseline)
ref LsHeights lsHeights, // [in] run height metrics
int runWidth, // run overall advance width
ref LSRECT clippingRect // [in] clipping rectangle if any applied
)
{
LsErr lserr = LsErr.None;
LSRun lsrun = null;
try
{
TextMetrics.FullTextLine currentLine = Draw.CurrentLine;
lsrun = currentLine.GetRun(plsrun);
Debug.Assert(TextStore.IsContent(plsrun) && lsrun.Shapeable != null);
GlyphRun glyphRun = ComputeShapedGlyphRun(
lsrun,
currentLine.Formatter,
true, // origin of the glyph run provided at drawing time
ptRun,
charCount,
pwchText,
puClusterMap,
glyphCount,
puGlyphs,
piJustifiedGlyphAdvances,
piiGlyphOffsets,
currentLine.IsJustified
);
if (glyphRun != null)
{
DrawingContext drawingContext = Draw.DrawingContext;
Draw.SetGuidelineY(glyphRun.BaselineOrigin.Y);
try
{
_boundingBox.Union(
lsrun.DrawGlyphRun(
drawingContext,
null, // draw with the run's foreground
glyphRun
)
);
}
finally
{
Draw.UnsetGuidelineY();
}
}
}
catch (Exception e)
{
SaveException(e, plsrun, lsrun);
lserr = LsErr.ClientAbort;
}
catch
{
SaveNonCLSException("DrawGlyphs", plsrun, lsrun);
lserr = LsErr.ClientAbort;
}
return lserr;
}
internal unsafe LsErr DrawTextRun(
IntPtr pols, // Line Layout context
Plsrun plsrun, // plsrun
ref LSPOINT ptText, // [in] text origin
char* pwchText, // character string
int* piCharAdvances, // char advance widths
int cchText, // text length
LsTFlow textFlow, // text flow
uint displayMode, // draw in transparent or opaque
ref LSPOINT ptRun, // [in] run origin
ref LsHeights lsHeights, // [in] run height
int dupRun, // run length
ref LSRECT clipRect // [in] from DisplayLine's clip rectangle param
)
{
LsErr lserr = LsErr.None;
LSRun lsrun = null;
try
{
TextMetrics.FullTextLine currentLine = Draw.CurrentLine;
lsrun = currentLine.GetRun(plsrun);
GlyphRun glyphRun = ComputeUnshapedGlyphRun(
lsrun,
textFlow,
currentLine.Formatter,
true, // origin of the glyph run provided at drawing time
ptText,
dupRun,
cchText,
pwchText,
piCharAdvances,
currentLine.IsJustified
);
if (glyphRun != null)
{
DrawingContext drawingContext = Draw.DrawingContext;
Draw.SetGuidelineY(glyphRun.BaselineOrigin.Y);
try
{
_boundingBox.Union(
lsrun.DrawGlyphRun(
drawingContext,
null, // draw with the run's foreground brush
glyphRun
)
);
}
finally
{
Draw.UnsetGuidelineY();
}
}
}
catch (Exception e)
{
SaveException(e, plsrun, lsrun);
lserr = LsErr.ClientAbort;
}
catch
{
SaveNonCLSException("DrawTextRun", plsrun, lsrun);
lserr = LsErr.ClientAbort;
}
return lserr;
}
