Amebis/wxWidgets
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

corrected an off-by-1 bug in GetNumberOfLines() and PositionToXY() for

Browse Source 
single-line text controls


git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@1506 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
This commit is contained in:
Vadim Zeitlin
1999-01-28 14:01:37 +00:00
parent dcfde59229
commit 2829d9e3e8
2 changed files with 32 additions and 14 deletions
Download Patch File Download Diff File Expand all files Collapse all files

23
src/gtk/textctrl.cpp
View File

@@ -435,12 +435,18 @@ long wxTextCtrl::PositionToXY(long pos, long *x, long *y ) const
{
wxString text = GetValue();
if( pos >= (long)text.Len() )
// cast to prevent warning. But pos really should've been unsigned.
if( (unsigned long)pos > text.Len() )
return FALSE;
*x=1; // Col 1
*y=1; // Line 1
for ( const char *p = text.c_str(); *p; p++ )
if (pos == 0)
return TRUE;
const char* stop = text.c_str() + pos + 1;
for ( const char *p = text.c_str(); p <= stop; p++ )
{
if (*p == '\n')
{
@@ -453,7 +459,7 @@ long wxTextCtrl::PositionToXY(long pos, long *x, long *y ) const
}
else // single line control
{
if ( pos < GTK_ENTRY(m_text)->text_length )
if ( pos <= GTK_ENTRY(m_text)->text_length )
{
*y = 1;
*x = pos;
@@ -473,10 +479,11 @@ long wxTextCtrl::XYToPosition(long x, long y ) const
if (!(m_windowStyle & wxTE_MULTILINE)) return 0;
long pos=0;
/* This is a kludge; our XY values are 1-based, but GetLineLength()
* and --Text() start counting at 0. (and so say the docs) */
for( int i=1; i<y; i++ ) pos += GetLineLength(i-1) + 1; // one for '\n'
for( int i=1; i<y; i++ ) pos += GetLineLength(i);
pos +=x-1; // Pos start with 0
pos += x-1; // Pos start with 0
return pos;
}
@@ -502,7 +509,9 @@ int wxTextCtrl::GetNumberOfLines() const
currentLine++;
}
g_free( text );
return currentLine;
// currentLine is 0 based, add 1 to get number of lines
return currentLine + 1;
}
else
{