/// ------------------------------------------------------------------------------------
/// <summary>
/// Do remaining initialization once we (might) have a selection.
/// </summary>
/// ------------------------------------------------------------------------------------
void Init()
{
if (m_sel == null)
{
return;
}
if (m_sel.SelType == VwSelType.kstPicture)
{
// TextSelInfo doesn't work; but we can get a good approximation of much of the
// information like this.
// Out variables for AllTextSelInfo.
int ihvoRoot;
int tagTextProp;
int cpropPrevious;
int ichAnchor;
int ichEnd;
int ws;
bool fAssocPrev;
int ihvoEnd;
ITsTextProps ttpBogus;
// Main array of information retrieved from sel that made combo.
SelLevInfo[] rgvsli;
// Analysis can now be zero (e.g., displaying alternate case form for non-existent WfiWordform)
// and I don't believe it's a problem for the code below (JohnT).
// if (sandbox.Analysis == 0)
// {
// // We aren't fully initialized yet, so don't do anything.
// return null;
// }
try
{
int cvsli = m_sel.CLevels(false) - 1;
rgvsli = SelLevInfo.AllTextSelInfo(m_sel, cvsli,
out ihvoRoot, out tagTextProp, out cpropPrevious, out ichAnchor, out ichEnd,
out ws, out fAssocPrev, out ihvoEnd, out ttpBogus);
}
catch (Exception)
{
// If anything goes wrong just give up.
return;
}
m_ichA = ichAnchor;
m_ichE = ichEnd;
if (rgvsli.Length > 0)
{
m_hvoObjA = m_hvoObjE = rgvsli[0].hvo;
}
m_tagA = m_tagE = tagTextProp;
}
else
{
m_sel.TextSelInfo(true, out m_tssE, out m_ichE, out m_fAssocPrev, out m_hvoObjE, out m_tagE, out m_wsE);
m_sel.TextSelInfo(false, out m_tssA, out m_ichA, out m_fAssocPrev, out m_hvoObjA, out m_tagA, out m_wsA);
}
m_fIsRange = m_sel.IsRange;
m_selType = m_sel.SelType;
}
/// ------------------------------------------------------------------------------------
/// <summary>
/// Do remaining initialization once we (might) have a selection.
/// </summary>
/// ------------------------------------------------------------------------------------
void Init()
{
if (m_sel == null)
return;
if (m_sel.SelType == VwSelType.kstPicture)
{
// TextSelInfo doesn't work; but we can get a good approximation of much of the
// information like this.
// Out variables for AllTextSelInfo.
int ihvoRoot;
int tagTextProp;
int cpropPrevious;
int ichAnchor;
int ichEnd;
int ws;
bool fAssocPrev;
int ihvoEnd;
ITsTextProps ttpBogus;
// Main array of information retrived from sel that made combo.
SelLevInfo[] rgvsli;
// Analysis can now be zero (e.g., displaying alterate case form for non-existent WfiWordform)
// and I don't believe it's a problem for the code below (JohnT).
// if (sandbox.Analysis == 0)
// {
// // We aren't fully initialized yet, so don't do anything.
// return null;
// }
try
{
int cvsli = m_sel.CLevels(false) - 1;
rgvsli = SelLevInfo.AllTextSelInfo(m_sel, cvsli,
out ihvoRoot, out tagTextProp, out cpropPrevious, out ichAnchor, out ichEnd,
out ws, out fAssocPrev, out ihvoEnd, out ttpBogus);
}
catch (Exception)
{
// If anything goes wrong just give up.
return;
}
m_ichA = ichAnchor;
m_ichE = ichEnd;
if (rgvsli.Length > 0)
m_hvoObjA = m_hvoObjE = rgvsli[0].hvo;
m_tagA = m_tagE = tagTextProp;
}
else
{
m_sel.TextSelInfo(true, out m_tssE, out m_ichE, out m_fAssocPrev, out m_hvoObjE, out m_tagE, out m_wsE);
m_sel.TextSelInfo(false, out m_tssA, out m_ichA, out m_fAssocPrev, out m_hvoObjA, out m_tagA, out m_wsA);
}
m_fIsRange = m_sel.IsRange;
m_selType = m_sel.SelType;
}
/// <summary>
/// find a selection of the given selType in the RootBox starting at xMin coordinate and spanning xMaxCountOfPixels along the mid y-coordinate
/// of the given selOrig, by the direction and increment of dxPixelIncrement.
/// </summary>
/// <param name="selOrig">the selection from which we calculate the y-coordinate along which to scan.</param>
/// <param name="selType">the type of selection we're looking for.</param>
/// <param name="xMin">the starting x coordinate from which to scan.</param>
/// <param name="xMaxCountOfPixels">the number of x units to scan from xMin.</param>
/// <param name="dx">number and direction of pixels to probe for selType. a positive value
/// will scan right, and a negative value will scan left. must be nonzero.</param>
/// <returns></returns>
private IVwSelection FindNearestSelectionType(IVwSelection selOrig, VwSelType selType, uint xMin, uint xMaxCountOfPixels, int dxPixelIncrement)
{
IVwSelection sel = null;
if (dxPixelIncrement == 0)
throw new ArgumentException(String.Format("dxPixelIncrement({0}) must be nonzero", dxPixelIncrement));
SIL.Utils.Rect rect;
selOrig.GetParaLocation(out rect);
int y = rect.top + (rect.bottom - rect.top) / 2;
Point pt = new Point((int)xMin, y);
uint xLim = 0;
if (dxPixelIncrement > 0)
{
// set our bounds for searching forward.
xLim = xMin + xMaxCountOfPixels;
// truncate if necessary.
if (xLim > RootBox.Width)
xLim = (uint)RootBox.Width;
}
else
{
// set our bounds for searching backward.
// truncate if necessary.
if (xMin > xMaxCountOfPixels)
xLim = xMin - xMaxCountOfPixels;
else
xLim = 0;
}
while (dxPixelIncrement < 0 && pt.X > xLim ||
dxPixelIncrement > 0 && pt.X < xLim)
{
using (new HoldGraphics(this))
{
Rectangle rcSrcRoot;
Rectangle rcDstRoot;
GetCoordRects(out rcSrcRoot, out rcDstRoot);
sel = m_rootb.MakeSelAt(pt.X, pt.Y, rcSrcRoot, rcDstRoot, false);
if (sel != null && sel.SelType == selType)
break;
else
sel = null;
}
pt.X += dxPixelIncrement;
}
return sel;
}
