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Implement wxRegion operations in terms of DoCombine()

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This commit is contained in:
Vadim Zeitlin
2019-01-21 23:28:18 +01:00
parent 637b861eb1
commit c28a8c9e7e
2 changed files with 75 additions and 21 deletions
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94
src/qt/region.cpp
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@@ -154,6 +154,7 @@ void wxRegion::Clear()
void wxRegion::QtSetRegion(QRegion region)
{
AllocExclusive();
M_REGIONDATA = region;
}
@@ -219,47 +220,98 @@ bool wxRegion::DoOffset(wxCoord x, wxCoord y)
return true;
}
bool wxRegion::DoUnionWithRect(const wxRect& rect)
// combine another region with this one
bool wxRegion::DoCombine(const wxRegion& region, wxRegionOp op)
{
wxCHECK_MSG( IsOk(), false, "Invalid region" );
// we can't use the API functions if we don't have a valid region
if ( !m_refData )
{
// combining with an empty/invalid region works differently depending
// on the operation
switch ( op )
{
case wxRGN_COPY:
case wxRGN_OR:
case wxRGN_XOR:
*this = region;
break;
M_REGIONDATA = M_REGIONDATA.united( wxQtConvertRect( rect ) );
default:
wxFAIL_MSG(wxT("unknown region operation"));
wxFALLTHROUGH;
case wxRGN_AND:
case wxRGN_DIFF:
// leave empty/invalid
return false;
}
}
else // we have a valid region
{
AllocExclusive();
switch ( op )
{
case wxRGN_AND:
M_REGIONDATA = M_REGIONDATA.intersected(region.GetHandle());
break;
case wxRGN_OR:
M_REGIONDATA = M_REGIONDATA.united(region.GetHandle());
break;
case wxRGN_XOR:
M_REGIONDATA = M_REGIONDATA.xored(region.GetHandle());
break;
case wxRGN_DIFF:
M_REGIONDATA = M_REGIONDATA.subtracted(region.GetHandle());
break;
default:
wxFAIL_MSG(wxT("unknown region operation"));
wxFALLTHROUGH;
case wxRGN_COPY:
M_REGIONDATA = QRegion(region.GetHandle());
break;
}
}
return true;
}
bool wxRegion::DoUnionWithRegion(const wxRegion& region)
{
wxCHECK_MSG( IsOk(), false, "Invalid region" );
wxCHECK_MSG( region.IsOk(), false, "Invalid parameter region" );
M_REGIONDATA = M_REGIONDATA.united( region.GetHandle() );
return true;
return DoCombine(region, wxRGN_OR);
}
bool wxRegion::DoIntersect(const wxRegion& region)
{
wxCHECK_MSG( IsOk(), false, "Invalid region" );
wxCHECK_MSG( region.IsOk(), false, "Invalid parameter region" );
M_REGIONDATA = M_REGIONDATA.intersected( region.GetHandle() );
return true;
return DoCombine(region, wxRGN_AND);
}
bool wxRegion::DoSubtract(const wxRegion& region)
{
wxCHECK_MSG( IsOk(), false, "Invalid region" );
wxCHECK_MSG( region.IsOk(), false, "Invalid parameter region" );
M_REGIONDATA = M_REGIONDATA.subtracted( region.GetHandle() );
return true;
return DoCombine(region, wxRGN_DIFF);
}
bool wxRegion::DoXor(const wxRegion& region)
{
return DoCombine(region, wxRGN_XOR);
}
bool wxRegion::DoUnionWithRect(const wxRect& rect)
{
if ( m_refData == NULL )
{
m_refData = new wxRegionRefData(wxQtConvertRect(rect));
return true;
}
wxCHECK_MSG( IsOk(), false, "Invalid region" );
wxCHECK_MSG( region.IsOk(), false, "Invalid parameter region" );
M_REGIONDATA = M_REGIONDATA.xored( region.GetHandle() );
AllocExclusive();
M_REGIONDATA = M_REGIONDATA.united( wxQtConvertRect( rect ) );
return true;
}