// Handles a change in the view selection.
protected override void HandleSelectionChange(IVwSelection vwselNew)
{
base.HandleSelectionChange(vwselNew);
// Figure what property is selected and display combo only if relevant.
SIL.FieldWorks.Common.COMInterfaces.ITsString tss;
int ich, tag, enc;
bool fAssocPrev;
vwselNew.TextSelInfo(true, out tss, out ich, out fAssocPrev, out hvoObjSelected, out tag, out enc);
string str = tss.get_Text();
if (tag == ktagWord_Type)
{
// Display combo at selection
SIL.FieldWorks.Common.COMInterfaces.Rect loc;
vwselNew.GetParaLocation(out loc);
typeComboBox.Location = new System.Drawing.Point(loc.left, loc.top);
// 60 is an arbitrary minimum size to make the current contents visible.
// Enhance JohnT: figure the width needed by the widest string, add width of arrow, use that
// as minimum
typeComboBox.Size = new System.Drawing.Size(Math.Max(loc.right - loc.left, 60), loc.bottom - loc.top);
typeComboBox.Text = str;
// This also makes it visible.
this.Controls.Add(typeComboBox);
}
else
{
// Hide combo if visible.
// Enhance JohnT: possibly also remove on loss of focus?
if (this.Controls.Contains(typeComboBox))
{
this.Controls.Remove(typeComboBox);
}
}
// Todo JohnT: make something interesting happen when a selection is made.
}
// Handles a change in the view selection.
protected override void HandleSelectionChange(IVwSelection vwselNew)
{
base.HandleSelectionChange(vwselNew);
// Figure what property is selected and display combo only if relevant.
SIL.FieldWorks.Common.COMInterfaces.ITsString tss;
int ich, tag, enc;
bool fAssocPrev;
vwselNew.TextSelInfo(true, out tss, out ich, out fAssocPrev, out hvoObjSelected, out tag, out enc);
string str = tss.get_Text();
if (tag == ktagWord_Type)
{
// Display combo at selection
SIL.FieldWorks.Common.COMInterfaces.Rect loc;
vwselNew.GetParaLocation(out loc);
typeComboBox.Location = new System.Drawing.Point(loc.left, loc.top);
// 60 is an arbitrary minimum size to make the current contents visible.
// Enhance JohnT: figure the width needed by the widest string, add width of arrow, use that
// as minimum
typeComboBox.Size = new System.Drawing.Size(Math.Max(loc.right - loc.left, 60), loc.bottom - loc.top);
typeComboBox.Text = str;
// This also makes it visible.
this.Controls.Add(typeComboBox);
}
else
{
// Hide combo if visible.
// Enhance JohnT: possibly also remove on loss of focus?
if (this.Controls.Contains(typeComboBox))
{
this.Controls.Remove(typeComboBox);
}
}
// Todo JohnT: make something interesting happen when a selection is made.
}
/// <summary>
/// Given an icon selection, find the nearest associated text.
/// In left to right, that's the first text to right of the picture.
/// In right to left, it's the first text to the left of the picture;
/// </summary>
/// <param name="selOrig"></param>
/// <returns></returns>
private IVwSelection SelectFirstAssociatedText(IVwSelection selOrig)
{
TextSelInfo tsi = new TextSelInfo(selOrig);
if (!tsi.IsPicture)
{
return tsi.Selection;
}
Debug.Assert(tsi.IsPicture);
IVwSelection selStartOfText = null;
int dxPixelIncrement = 1;
SIL.Utils.Rect rect;
selOrig.GetParaLocation(out rect);
int widthIconPara = (rect.right - rect.left);
int xMaxCountOfPixels = (widthIconPara) * 2;
if (m_vc.RightToLeft)
{
// Right to Left:
// start at the left of the icon and move left to find the text.
// let the limit be 2x the width of the icon.
selStartOfText = FindNearestSelectionType(selOrig, VwSelType.kstText, (uint)(rect.left - dxPixelIncrement), (uint)xMaxCountOfPixels, -dxPixelIncrement);
}
else
{
// Left to Right
// start at right of icon and move right to find text.
selStartOfText = FindNearestSelectionType(selOrig, VwSelType.kstText, (uint)(rect.right + dxPixelIncrement), (uint)xMaxCountOfPixels, dxPixelIncrement);
}
if (selStartOfText != null)
{
// install at beginning of text selection
selStartOfText.Install();
}
return selStartOfText;
}
/// <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;
}
/// <summary>
/// given a (text) selection, scan the beginning of its paragraph box and then immediately before its
/// paragraph box in search of the icon.
/// </summary>
/// <param name="selOrig"></param>
/// <returns></returns>
private IVwSelection ScanForIcon(IVwSelection selOrig)
{
IVwSelection selArrow;
int dxPixelIncrement = 3;
uint iconParagraphWidth = 10;
SIL.Utils.Rect rect;
selOrig.GetParaLocation(out rect);
if (m_vc.RightToLeft)
{
// Right to Left:
selArrow = FindNearestSelectionType(selOrig, VwSelType.kstPicture,
(uint)rect.right - iconParagraphWidth, iconParagraphWidth * 2, dxPixelIncrement);
if (selArrow == null)
{
// we didn't find it next to our paragraph box. see if we can
// find it at the beginning of the RootBox.
selArrow = FindNearestSelectionType(selOrig, VwSelType.kstPicture,
(uint)RootBox.Width - iconParagraphWidth, iconParagraphWidth, dxPixelIncrement);
}
}
else
{
// Left to Right
selArrow = FindNearestSelectionType(selOrig, VwSelType.kstPicture,
(uint)rect.left + iconParagraphWidth, iconParagraphWidth * 2, -dxPixelIncrement);
if (selArrow == null)
{
// we didn't find it next to our paragraph box. see if we can
// find it at the beginning of the RootBox.
selArrow = FindNearestSelectionType(selOrig, VwSelType.kstPicture,
0, iconParagraphWidth, dxPixelIncrement);
}
}
return selArrow;
}
/// <summary>
/// Make a combo box appropriate for the specified selection. If fMouseDown is true,
/// do so unconditionally...otherwise (mousemove) only if the new selection is on a different thing.
/// </summary>
/// <param name="vwselNew"></param>
/// <param name="fForce"></param>
private void ShowComboForSelection(IVwSelection vwselNew, bool fMouseDown)
{
// It's a good idea to get this first...it's possible for MakeCombo to leave the selection invalid.
SIL.Utils.Rect loc;
vwselNew.GetParaLocation(out loc);
if (!fMouseDown)
{
// It's a mouse move.
// If we've moved to somewhere outside any paragraph get rid of the combos.
// But, allow somewhere close, since otherwise it's almost impossible to get
// a combo on an empty string.
SIL.Utils.Rect locExpanded = loc;
locExpanded.right += 50;
locExpanded.left -= 5;
locExpanded.top -= 2;
locExpanded.bottom += 2;
if (!locExpanded.Contains(m_LastMouseMovePos))
{
HideCombos();
return;
}
// Don't do anything if the current mouse position is in the same paragraph
// as before. Things tend to flicker if we continually create and remove it.
// But, if we've hidden all the combos, go ahead even if at the same position as before...
// otherwise, when we drag off outside the text and return, we may not get any combo.
if (loc.Equals(m_locLastShowCombo) && FirstLineHandler != null)
{
return;
}
}
FinishUpOk(); // Just like OK, if there are pending edits in the combo, do them.
// Changing a different item may result in changes to this one also. This could invalidate
// the selection, in which case, we can't use it.
// Enhance JohnT: might consider trying the current selection, if any, if called from
// MouseDown...that would not be useful if called from hover. But there probably isn't
// a current selection in that case. Could try a selection at the saved mouse position.
if (!vwselNew.IsValid)
return;
m_locLastShowCombo = loc;
m_fMakingCombo = true;
HideCombos();
// No matter what, we are fixin to get rid of the old value.
DisposeComboHandler();
if (!m_fInMouseDrag)
{
m_ComboHandler = InterlinComboHandler.MakeCombo(m_mediator.HelpTopicProvider,
vwselNew, this, fMouseDown);
}
else
{
m_ComboHandler = null;
}
m_fMakingCombo = false;
m_fLockCombo = false; // nothing typed in it yet.
if (m_ComboHandler != null)
{
// Set the position of the combo and display it. Do this before synchronizing
// the LexEntry display, which can take a while.
m_ComboHandler.Activate(loc);
m_fMouseDownActivatedCombo = true;
// If the selection moved to a different morpheme, and we know a corresponding
// LexEntry, switch to it.
if (m_ComboHandler.SelectedMorphHvo != 0)
{
int hvoSbEntry = m_caches.DataAccess.get_ObjectProp(
m_ComboHandler.SelectedMorphHvo, ktagSbMorphEntry);
if (hvoSbEntry != 0)
{
//SetSelectedEntry(m_caches.RealHvo(hvoSbEntry)); // seems to be buggy.
}
}
}
}
/// ------------------------------------------------------------------------------------
/// <summary>
/// We override this method to make a selection in all of the views that are in a
/// snynced group. This fixes problems where the user changes the selection in one of
/// the slaves, but the master is not updated. Thus the view is not scrolled as the
/// groups scroll position only scrolls the master's selection into view. (TE-3380)
/// </summary>
/// <param name="prootb"></param>
/// <param name="vwselNew"></param>
/// ------------------------------------------------------------------------------------
public override void SelectionChanged(IVwRootBox prootb, IVwSelection vwselNew)
{
CheckDisposed();
Debug.Assert( vwselNew != null );
if (s_fInSelectionChanged)
return;
// We need to check if this is our first time in the function because our
// call to helper.SetSelection below will end up calling this function..
// this results in a ugly infinite loop. A more elegant solution would be
// nice...but not practical with the views architecture.
if (m_group != null && !vwselNew.IsRange)
{
s_fInSelectionChanged = true;
// We are after the y position of the top of the paragraph
Rectangle rcSrcRoot;
Rectangle rcDstRoot;
GetCoordRects( out rcSrcRoot, out rcDstRoot);
Rect paraRect;
vwselNew.GetParaLocation( out paraRect );
foreach(RootSite site in m_group.Slaves )
{
if (site != this)
{
// Recursive call to SelectionChanged happens here =(
// Add 2 pixels so we aren't on the end of the rectangle
// (improves accuracy)
site.RootBox.MakeSelAt(0, paraRect.top + 2, rcSrcRoot, rcDstRoot, true);
}
}
// Reset at this point.
s_fInSelectionChanged = false;
}
base.SelectionChanged(prootb, vwselNew);
}