internal unsafe void SetTabs(
int incrementalTab,
LsTbd* tabStops,
int tabStopCount
)
{
Invariant.Assert(_ploc.Value != System.IntPtr.Zero);
LsErr lserr = UnsafeNativeMethods.LoSetTabs(
_ploc.Value,
incrementalTab,
tabStopCount,
tabStops
);
if(lserr != LsErr.None)
{
ThrowExceptionFromLsError(SR.Get(SRID.SetTabsFailure, lserr), lserr);
}
}
internal void SetTabs(TextFormatterContext context)
{
unsafe
{
ParaProp pap = _store.Pap;
FormatSettings settings = _store.Settings;
// set up appropriate tab stops
int incrementalTab = TextFormatterImp.RealToIdeal(pap.DefaultIncrementalTab);
int lsTbdCount = pap.Tabs != null ? pap.Tabs.Count : 0;
LsTbd[] lsTbds;
if (_markerStore != null)
{
if (pap.Tabs != null && pap.Tabs.Count > 0)
{
lsTbdCount = pap.Tabs.Count + 1;
lsTbds = new LsTbd[lsTbdCount];
lsTbds[0].ur = settings.TextIndent; // marker requires a tab stop at text start position
fixed (LsTbd* plsTbds = &lsTbds[1])
{
CreateLsTbds(pap, plsTbds, lsTbdCount - 1);
context.SetTabs(incrementalTab, plsTbds - 1, lsTbdCount);
}
}
else
{
LsTbd markerRequiredLsTbd = new LsTbd();
markerRequiredLsTbd.ur = settings.TextIndent; // marker requires a tab stop at text start position
context.SetTabs(incrementalTab, &markerRequiredLsTbd, 1);
}
}
else
{
if (pap.Tabs != null && pap.Tabs.Count > 0)
{
lsTbds = new LsTbd[lsTbdCount];
fixed (LsTbd* plsTbds = &lsTbds[0])
{
CreateLsTbds(pap, plsTbds, lsTbdCount);
context.SetTabs(incrementalTab, plsTbds, lsTbdCount);
}
}
else
{
// work with only incremental tab
context.SetTabs(incrementalTab, null, 0);
}
}
}
}
private unsafe void CreateLsTbds(
ParaProp pap,
LsTbd* plsTbds,
int lsTbdCount
)
{
for (int i = 0; i < lsTbdCount; i++)
{
TextTabProperties tab = (TextTabProperties)pap.Tabs[i];
plsTbds[i].lskt = Convert.LsKTabFromTabAlignment(tab.Alignment);
plsTbds[i].ur = TextFormatterImp.RealToIdeal(tab.Location);
if (tab.TabLeader != 0)
{
// Note: LS does not currently support surrogate character as tab leader and aligning character
plsTbds[i].wchTabLeader = (char)tab.TabLeader;
// tab leader requires state at display time for tab leader width fetching
_statusFlags |= StatusFlags.KeepState;
}
plsTbds[i].wchCharTab = (char)tab.AligningCharacter;
}
}
internal static unsafe extern LsErr LoSetTabs(
IntPtr ploc,
int durIncrementalTab,
int tabCount,
LsTbd* pTabs
);
