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added first bare bones implementation for PositionToXY and friends

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git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@26434 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
This commit is contained in:
Stefan Csomor 2004-03-28 17:52:10 +00:00
parent 949cb163a7
commit bd3169a752
1 changed files with 129 additions and 34 deletions
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163
src/mac/carbon/textctrl.cpp
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@ -770,6 +770,9 @@ bool wxTextCtrl::Create(wxWindow *parent, wxWindowID id,
TXNShowSelection( (TXNObject) m_macTXN, kTXNShowStart);
}
// in case MLTE is catching events before we get the chance to do so, we'd have to reintroduce the tlw-handler in front :
// parent->MacGetTopLevelWindow()->MacInstallTopLevelWindowEventHandler() ;
SetBackgroundColour( *wxWHITE ) ;
TXNBackground tback;
@ -1322,12 +1325,78 @@ int wxTextCtrl::GetNumberOfLines() const
long wxTextCtrl::XYToPosition(long x, long y) const
{
// TODO
Point curpt ;
long lastpos = GetLastPosition() ;
// TODO find a better implementation : while we can get the
// line metrics of a certain line, we don't get its starting
// position, so it would probably be rather a binary search
// for the start position
long xpos = 0 ;
long ypos = 0 ;
int lastHeight = 0 ;
ItemCount n ;
for ( n = 0 ; n <= lastpos ; ++n )
{
if ( y == ypos && x == xpos )
return n ;
TXNOffsetToPoint( (TXNObject) m_macTXN, n , &curpt);
if ( curpt.v > lastHeight )
{
xpos = 0 ;
if ( n > 0 )
++ypos ;
lastHeight = curpt.v ;
}
else
++xpos ;
}
return 0;
}
bool wxTextCtrl::PositionToXY(long pos, long *x, long *y) const
{
Point curpt ;
long lastpos = GetLastPosition() ;
if ( y ) *y = 0 ;
if ( x ) *x = 0 ;
if ( pos <= lastpos )
{
// TODO find a better implementation : while we can get the
// line metrics of a certain line, we don't get its starting
// position, so it would probably be rather a binary search
// for the start position
long xpos = 0 ;
long ypos = 0 ;
int lastHeight = 0 ;
ItemCount n ;
for ( n = 0 ; n <= pos ; ++n )
{
TXNOffsetToPoint( (TXNObject) m_macTXN, n , &curpt);
if ( curpt.v > lastHeight )
{
xpos = 0 ;
if ( n > 0 )
++ypos ;
lastHeight = curpt.v ;
}
else
++xpos ;
}
if ( y ) *y = ypos ;
if ( x ) *x = xpos ;
}
return FALSE ;
}
@ -1357,57 +1426,83 @@ void wxTextCtrl::ShowPosition(long pos)
int wxTextCtrl::GetLineLength(long lineNo) const
{
// TODO change this if possible to reflect real lines
wxString content = GetValue() ;
Point curpt ;
if ( lineNo < GetNumberOfLines() )
{
// TODO find a better implementation : while we can get the
// line metrics of a certain line, we don't get its starting
// position, so it would probably be rather a binary search
// for the start position
long xpos = 0 ;
long ypos = 0 ;
int lastHeight = 0 ;
long lastpos = GetLastPosition() ;
// Find line first
int count = 0;
for (size_t i = 0; i < content.Length() ; i++)
ItemCount n ;
for ( n = 0 ; n <= lastpos ; ++n )
{
if (count == lineNo)
TXNOffsetToPoint( (TXNObject) m_macTXN, n , &curpt);
if ( curpt.v > lastHeight )
{
// Count chars in line then
count = 0;
for (size_t j = i; j < content.Length(); j++)
{
count++;
if (content[j] == '\n') return count;
if ( ypos == lineNo )
return xpos ;
xpos = 0 ;
if ( n > 0 )
++ypos ;
lastHeight = curpt.v ;
}
else
++xpos ;
}
}
return count;
}
if (content[i] == '\n') count++;
}
return 0;
}
wxString wxTextCtrl::GetLineText(long lineNo) const
{
// TODO change this if possible to reflect real lines
Point curpt ;
wxString line ;
wxString content = GetValue() ;
// Find line first
int count = 0;
for (size_t i = 0; i < content.Length() ; i++)
if ( lineNo < GetNumberOfLines() )
{
if (count == lineNo)
{
// Add chars in line then
wxString tmp;
// TODO find a better implementation : while we can get the
// line metrics of a certain line, we don't get its starting
// position, so it would probably be rather a binary search
// for the start position
long xpos = 0 ;
long ypos = 0 ;
int lastHeight = 0 ;
long lastpos = GetLastPosition() ;
for (size_t j = i; j < content.Length(); j++)
ItemCount n ;
for ( n = 0 ; n <= lastpos ; ++n )
{
if (content[j] == '\n')
return tmp;
TXNOffsetToPoint( (TXNObject) m_macTXN, n , &curpt);
tmp += content[j];
if ( curpt.v > lastHeight )
{
if ( ypos == lineNo )
return line ;
xpos = 0 ;
if ( n > 0 )
++ypos ;
lastHeight = curpt.v ;
}
else
{
if ( ypos == lineNo )
line += content[n] ;
++xpos ;
}
}
}
return tmp;
}
if (content[i] == '\n') count++;
}
return wxEmptyString ;
return line ;
}
/*