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Show more detailed information about selection in the grid sample

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Show the selected cells/rows/columns/blocks instead of just showing
their number, as we now have an efficient (i.e. taking time proportional
to the number of selected blocks and not to the number of the individual
cells, rows or columns) way of doing this.

See #2576.
This commit is contained in:
Vadim Zeitlin
2020-04-11 23:53:42 +02:00
parent f3ff89601f
commit b095e67ac3
1 changed files with 57 additions and 21 deletions
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78
samples/grid/griddemo.cpp
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@@ -1220,32 +1220,68 @@ void GridFrame::SetCornerLabelValue( wxCommandEvent& WXUNUSED(ev) )
void GridFrame::ShowSelection( wxCommandEvent& WXUNUSED(ev) ) void GridFrame::ShowSelection( wxCommandEvent& WXUNUSED(ev) )
{ {
switch ( grid->GetSelectionMode() ) int count = 0;
wxString desc;
const wxGridSelectionRange& sel = grid->GetSelectionRange();
for ( wxGridSelectionRange::iterator it = sel.begin();
it != sel.end();
++it, ++count )
{ {
case wxGrid::wxGridSelectCells: const wxGridBlockCoords& b = *it;
wxLogMessage("%zu individual cells and "
"%zu blocks of contiguous cells selected",
grid->GetSelectedCells().size(),
grid->GetSelectionBlockTopLeft().size());
return;
case wxGrid::wxGridSelectRows: wxString blockDesc;
case wxGrid::wxGridSelectColumns: if ( b.GetLeftCol() == 0 &&
case wxGrid::wxGridSelectRowsOrColumns: b.GetRightCol() == grid->GetNumberCols() - 1 )
const wxArrayInt& rows = grid->GetSelectedRows(); {
if ( !rows.empty() ) if ( b.GetTopRow() == b.GetBottomRow() )
wxLogMessage("%zu rows selected", rows.size()); blockDesc.Printf("row %d", b.GetTopRow() + 1);
else
blockDesc.Printf("rows %d..%d",
b.GetTopRow() + 1, b.GetBottomRow() + 1);
}
else if ( b.GetTopRow() == 0 &&
b.GetBottomRow() == grid->GetNumberRows() - 1 )
{
if ( b.GetLeftCol() == b.GetRightCol() )
blockDesc.Printf("column %d", b.GetLeftCol() + 1);
else
blockDesc.Printf("columns %d..%d",
b.GetLeftCol() + 1,
b.GetRightCol() + 1);
}
else if ( b.GetTopRow() == b.GetBottomRow() &&
b.GetLeftCol() == b.GetRightCol() )
{
blockDesc.Printf("cell R%dC%d",
b.GetTopRow() + 1, b.GetLeftCol() + 1);
}
else
{
blockDesc.Printf("block R%dC%d - R%dC%d",
b.GetTopRow() + 1,
b.GetLeftCol() + 1,
b.GetBottomRow() + 1,
b.GetRightCol() + 1);
}
const wxArrayInt& cols = grid->GetSelectedCols(); if ( count )
if ( !cols.empty() ) desc += "\n\t";
wxLogMessage("%zu columns selected", rows.size()); desc += blockDesc;
if ( rows.empty() && cols.empty() )
wxLogMessage("No selection");
return;
} }
wxLogError("Unknown grid selection mode."); switch ( count )
{
case 0:
wxLogMessage("No selection");
break;
case 1:
wxLogMessage("Selection: %s", desc);
break;
default:
wxLogMessage("%d selected blocks:\n\t%s", count, desc);
}
} }
void GridFrame::SelectCells( wxCommandEvent& WXUNUSED(ev) ) void GridFrame::SelectCells( wxCommandEvent& WXUNUSED(ev) )