kicad/common/widgets/wx_grid.cpp

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/*
* This program source code file is part of KiCad, a free EDA CAD application.
*
* Copyright (C) 2018 KiCad Developers, see AUTHORS.txt for contributors.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 3
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, you may find one here:
* http://www.gnu.org/licenses/old-licenses/gpl-2.0.html
* or you may search the http://www.gnu.org website for the version 2 license,
* or you may write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
*/
#include <wx/tokenzr.h>
#include <wx/dc.h>
#include <wx/wx.h>
#include "wx_grid.h"
#define MIN_GRIDCELL_MARGIN 3
WX_GRID::WX_GRID( wxWindow *parent, wxWindowID id, const wxPoint& pos, const wxSize& size,
long style, const wxString& name ) :
wxGrid( parent, id, pos, size, style, name ),
m_weOwnTable( false )
{}
WX_GRID::~WX_GRID()
{
if( m_weOwnTable )
DestroyTable( GetTable() );
}
void WX_GRID::SetColLabelSize( int aHeight )
{
// correct wxFormBuilder height for large fonts
wxFont guiFont = wxSystemSettings::GetFont( wxSYS_DEFAULT_GUI_FONT );
int minHeight = guiFont.GetPixelSize().y + 2 * MIN_GRIDCELL_MARGIN;
wxGrid::SetColLabelSize( std::max( aHeight, minHeight ) );
}
void WX_GRID::SetTable( wxGridTableBase* aTable, bool aTakeOwnership )
{
// wxGrid::SetTable() messes up the column widths from wxFormBuilder so we have to save
// and restore them.
int numberCols = GetNumberCols();
int* formBuilderColWidths = new int[numberCols];
for( int i = 0; i < numberCols; ++i )
formBuilderColWidths[ i ] = GetColSize( i );
wxGrid::SetTable( aTable );
// wxGrid::SetTable() may change the number of columns, so prevent out-of-bounds access
// to formBuilderColWidths
numberCols = std::min( numberCols, GetNumberCols() );
for( int i = 0; i < numberCols; ++i )
{
// correct wxFormBuilder width for large fonts and/or long translations
int headingWidth = GetTextExtent( GetColLabelValue( i ) ).x + 2 * MIN_GRIDCELL_MARGIN;
SetColSize( i, std::max( formBuilderColWidths[ i ], headingWidth ) );
}
delete[] formBuilderColWidths;
Connect( wxEVT_GRID_COL_MOVE, wxGridEventHandler( WX_GRID::onGridColMove ), NULL, this );
m_weOwnTable = aTakeOwnership;
}
void WX_GRID::DestroyTable( wxGridTableBase* aTable )
{
// wxGrid's destructor will crash trying to look up the cell attr if the edit control
// is left open. Normally it's closed in Validate(), but not if the user hit Cancel.
CommitPendingChanges( true /* quiet mode */ );
Disconnect( wxEVT_GRID_COL_MOVE, wxGridEventHandler( WX_GRID::onGridColMove ), NULL, this );
wxGrid::SetTable( nullptr );
delete aTable;
}
wxString WX_GRID::GetShownColumns()
{
wxString shownColumns;
for( int i = 0; i < GetNumberCols(); ++i )
{
if( IsColShown( i ) )
{
if( shownColumns.Length() )
shownColumns << wxT( " " );
shownColumns << i;
}
}
return shownColumns;
}
void WX_GRID::ShowHideColumns( const wxString& shownColumns )
{
for( int i = 0; i < GetNumberCols(); ++i )
HideCol( i );
wxStringTokenizer shownTokens( shownColumns );
while( shownTokens.HasMoreTokens() )
{
long colNumber;
shownTokens.GetNextToken().ToLong( &colNumber );
if( colNumber >= 0 && colNumber < GetNumberCols() )
ShowCol( colNumber );
}
}
// An re-implementation of wxGrid::DrawColLabel which left-aligns the first column when
// there are no row labels.
void WX_GRID::DrawColLabel( wxDC& dc, int col )
{
if( GetColWidth( col ) <= 0 || m_colLabelHeight <= 0 )
return;
int colLeft = GetColLeft( col );
wxRect rect( colLeft, 0, GetColWidth( col ), m_colLabelHeight );
static wxGridColumnHeaderRendererDefault rend;
// It is reported that we need to erase the background to avoid display
// artefacts, see #12055.
// wxWidgets renamed this variable between 3.1.2 and 3.1.3 ...
#if wxCHECK_VERSION( 3, 1, 3 )
wxDCBrushChanger setBrush( dc, m_colLabelWin->GetBackgroundColour() );
#else
wxDCBrushChanger setBrush( dc, m_colWindow->GetBackgroundColour() );
#endif
dc.DrawRectangle(rect);
rend.DrawBorder( *this, dc, rect );
int hAlign, vAlign;
GetColLabelAlignment( &hAlign, &vAlign );
const int orient = GetColLabelTextOrientation();
if( col == 0 && GetRowLabelSize() == 0 )
hAlign = wxALIGN_LEFT;
rend.DrawLabel( *this, dc, GetColLabelValue( col ), rect, hAlign, vAlign, orient );
}
bool WX_GRID::CommitPendingChanges( bool aQuietMode )
{
if( !IsCellEditControlEnabled() )
return true;
if( !aQuietMode && SendEvent( wxEVT_GRID_EDITOR_HIDDEN ) == -1 )
return false;
HideCellEditControl();
// do it after HideCellEditControl()
m_cellEditCtrlEnabled = false;
int row = m_currentCellCoords.GetRow();
int col = m_currentCellCoords.GetCol();
wxString oldval = GetCellValue( row, col );
wxString newval;
wxGridCellAttr* attr = GetCellAttr( row, col );
wxGridCellEditor* editor = attr->GetEditor( this, row, col );
bool changed = editor->EndEdit( row, col, this, oldval, &newval );
editor->DecRef();
attr->DecRef();
if( changed )
{
if( !aQuietMode && SendEvent(wxEVT_GRID_CELL_CHANGING, newval) == -1 )
return false;
editor->ApplyEdit(row, col, this);
// for compatibility reasons dating back to wx 2.8 when this event
// was called wxEVT_GRID_CELL_CHANGE and wxEVT_GRID_CELL_CHANGING
// didn't exist we allow vetoing this one too
if( !aQuietMode && SendEvent( wxEVT_GRID_CELL_CHANGED, oldval ) == -1 )
{
// Event has been vetoed, set the data back.
SetCellValue( row, col, oldval );
return false;
}
}
return true;
}
void WX_GRID::onGridColMove( wxGridEvent& aEvent )
{
// wxWidgets won't move an open editor, so better just to close it
CommitPendingChanges( true );
}
int WX_GRID::GetVisibleWidth( int aCol, bool aHeader, bool aContents, bool aKeep )
{
int size = 0;
if( aCol < 0 )
{
if( aKeep )
size = GetRowLabelSize();
// The 1.1 scale factor is due to the fact row labels use a bold font, bigger than the normal font
// TODO: use a better way to evaluate the text size, for bold font
for( int row = 0; aContents && row < GetNumberRows(); row++ )
size = std::max( size, int( GetTextExtent( GetRowLabelValue( row ) + "M" ).x * 1.1 ) );
}
else
{
if( aKeep )
size = GetColSize( aCol );
// 'M' is generally the widest character, so we buffer the column width by default to ensure
// we don't write a continuous line of text at the column header
if( aHeader )
{
EnsureColLabelsVisible();
// The 1.1 scale factor is due to the fact headers use a bold font, bigger than the normal font
size = std::max( size, int( GetTextExtent( GetColLabelValue( aCol ) + "M" ).x * 1.1 ) );
}
for( int row = 0; aContents && row < GetNumberRows(); row++ )
{
// If we have text, get the size. Otherwise, use a placeholder for the checkbox
if( GetTable()->CanGetValueAs( row, aCol, wxGRID_VALUE_STRING ) )
size = std::max( size, GetTextExtent( GetCellValue( row, aCol ) + "M" ).x );
else
size = std::max( size, GetTextExtent( "MM" ).x );
}
}
return size;
}
void WX_GRID::EnsureColLabelsVisible()
{
int row_height = GetColLabelSize();
// The 1.1 scale factor is due to the fact row labels use a bold font, bigger than the normal font
// TODO: use a better way to evaluate the text size, for bold font
// Headers can be multiline. Fix the Column Label Height to show the full header
// However GetTextExtent does not work on multiline strings,
// and do not return the full text height (only the height of one line)
for( int col = 0; col < GetNumberCols(); col++ )
{
int nl_count = 0;
for( unsigned ii = 0; ii < GetColLabelValue( col ).size(); ii++ )
if( GetColLabelValue( col )[ii] == '\n' )
nl_count++;
if( nl_count )
{
// calculate a reasonable text height and its margin
int heigth = int( GetTextExtent( "Mj" ).y * 1.1 ) + 3;
// Col Label height must be able to show nl_count+1 lines
if( row_height < heigth * (nl_count+1) )
row_height += heigth*nl_count;
}
}
SetColLabelSize( row_height );
}