private unsafe LsErr AdjustChars(
LsCharRunInfo *plscharrunInfo,
bool expanding,
int interWordAdjustTo,
int** pplsAdjustLeft,
int** pplsAdjustRight
)
{
char* pwch = plscharrunInfo->pwch;
int cchRun = plscharrunInfo->cwch;
for (int i = 0; i < cchRun; i++)
{
int adjustedCharWidth = plscharrunInfo->rgduNominalWidth[i] + plscharrunInfo->rgduChangeLeft[i] + plscharrunInfo->rgduChangeRight[i];
pplsAdjustLeft[0][i] = 0;
pplsAdjustLeft[1][i] = 0;
pplsAdjustLeft[2][i] = 0;
pplsAdjustRight[0][i] = 0;
pplsAdjustRight[1][i] = 0;
pplsAdjustRight[2][i] = 0;
ushort flags = (ushort)(Classification.CharAttributeOf((int)Classification.GetUnicodeClassUTF16(pwch[i]))).Flags;
if ((flags & ((ushort)CharacterAttributeFlags.CharacterSpace)) != 0)
{
if (expanding)
{
int expandedBy = Math.Max(0, interWordAdjustTo - adjustedCharWidth);
pplsAdjustRight[0][i] = expandedBy;
pplsAdjustRight[1][i] = expandedBy * Constants.AcceptableLineStretchability;
pplsAdjustRight[2][i] = FullText.FormatWidth;
}
else
{
pplsAdjustRight[0][i] = Math.Max(0, adjustedCharWidth - interWordAdjustTo);
}
}
else if (expanding)
{
pplsAdjustRight[2][i] = FullText.FormatWidth;
}
}
return LsErr.None;
}
internal unsafe LsErr GetCharExpansionInfoFullMixed(
IntPtr pols, // Line Layout context
LsDevice device, // kind of device
LsTFlow textFlow, // text flow
LsCharRunInfo *plscharrunInfo, // char-based run info
LsNeighborInfo *plsneighborInfoLeft, // left neighbor info
LsNeighborInfo *plsneighborInfoRight, // right neigbor info
int maxPriorityLevel, // maximum priority level
int** pplsexpansionLeft, // [in/out] fill in left expansion amount per priority level on the way out
int** pplsexpansionRight // [in/out] fill in right expansion amount per priority level on the way out
)
{
LsErr lserr = LsErr.None;
Plsrun plsrun = Plsrun.Undefined;
LSRun lsrun = null;
try
{
Invariant.Assert(maxPriorityLevel == 3);
plsrun = plscharrunInfo->plsrun;
lsrun = FullText.StoreFrom(plsrun).GetRun(plsrun);
return AdjustChars(
plscharrunInfo,
true, // expanding
(int)(lsrun.EmSize * Constants.MaxInterWordExpansionPerEm),
pplsexpansionLeft,
pplsexpansionRight
);
}
catch (Exception e)
{
SaveException(e, plsrun, lsrun);
lserr = LsErr.ClientAbort;
}
catch
{
SaveNonCLSException("GetCharExpansionInfoFullMixed", plsrun, lsrun);
lserr = LsErr.ClientAbort;
}
return lserr;
}
