grid_text_helpers.cpp

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/*
 * This program source code file is part of KiCad, a free EDA CAD application.
 *
 * Copyright The KiCad Developers, see AUTHORS.txt for contributors.
 * @author Jon Evans <[email protected]>
 *
 * 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, see <https://www.gnu.org/licenses/>.
 */
 
#include <string_utils.h>
#include <wx/stc/stc.h>
#include <wx/dc.h>
#include <widgets/grid_text_helpers.h>
#include <widgets/wx_grid.h>
#include <scintilla_tricks.h>
 
 
//-------- GRID_CELL_TEXT_EDITOR ------------------------------------------------------
//
 
GRID_CELL_TEXT_EDITOR::GRID_CELL_TEXT_EDITOR() : wxGridCellTextEditor()
{}
 
 
void GRID_CELL_TEXT_EDITOR::SetValidator( const wxValidator& validator )
{
    // keep our own copy because wxGridCellTextEditor's is annoyingly private
    m_validator.reset( static_cast<wxValidator*>( validator.Clone() ) );
 
    wxGridCellTextEditor::SetValidator( *m_validator );
}
 
 
void GRID_CELL_TEXT_EDITOR::StartingKey( wxKeyEvent& event )
{
    if( m_validator )
    {
        m_validator->SetWindow( Text() );
        m_validator->ProcessEvent( event );
    }
 
    if( event.GetSkipped() )
    {
        wxGridCellTextEditor::StartingKey( event );
        event.Skip( false );
    }
}
 
 
void GRID_CELL_TEXT_EDITOR::SetSize( const wxRect& aRect )
{
    wxRect rect( aRect );
    WX_GRID::CellEditorTransformSizeRect( rect );
 
#if defined( __WXMSW__ )
    rect.Offset( 0, 1 );
#elif defined( __WXMAC__ )
    rect.Offset( 0, 2 );
    rect.SetHeight( rect.GetHeight() - 4 );
#endif
 
    wxGridCellEditor::SetSize( rect );      // NOLINT(*-parent-virtual-call)
}
 
 
//-------- GRID_CELL_ESCAPED_TEXT_RENDERER ------------------------------------------------------
//
 
GRID_CELL_ESCAPED_TEXT_RENDERER::GRID_CELL_ESCAPED_TEXT_RENDERER() :
        wxGridCellStringRenderer()
{}
 
void GRID_CELL_ESCAPED_TEXT_RENDERER::Draw( wxGrid& aGrid, wxGridCellAttr& aAttr, wxDC& aDC, const wxRect& aRect,
                                            int aRow, int aCol, bool isSelected )
{
    wxString unescaped = UnescapeString( aGrid.GetCellValue( aRow, aCol ) );
 
    wxRect rect = aRect;
    rect.Inflate( -1 );
 
    // erase background
    wxGridCellRenderer::Draw( aGrid, aAttr, aDC, aRect, aRow, aCol, isSelected );
 
    SetTextColoursAndFont( aGrid, aAttr, aDC, isSelected );
    aGrid.DrawTextRectangle( aDC, unescaped, rect, wxALIGN_LEFT, wxALIGN_CENTRE );
}
 
 
wxSize GRID_CELL_ESCAPED_TEXT_RENDERER::GetBestSize( wxGrid& aGrid, wxGridCellAttr& aAttr, wxDC& aDC,
                                                     int aRow, int aCol )
{
    wxString unescaped = UnescapeString( aGrid.GetCellValue( aRow, aCol ) );
    return wxGridCellStringRenderer::DoGetBestSize( aAttr, aDC, unescaped );
}
 
 
//-------- GRID_CELL_STC_EDITOR -----------------------------------------------------------------
//
 
GRID_CELL_STC_EDITOR::GRID_CELL_STC_EDITOR( bool aIgnoreCase, bool aSingleLine,
                                            std::function<void( wxStyledTextEvent&, SCINTILLA_TRICKS* )> onCharFn ) :
        m_scintillaTricks( nullptr ),
        m_ignoreCase( aIgnoreCase ),
        m_singleLine( aSingleLine ),
        m_onCharFn( std::move( onCharFn ) )
{}
 
 
void GRID_CELL_STC_EDITOR::SetSize( const wxRect& aRect )
{
    wxRect rect( aRect );
    WX_GRID::CellEditorTransformSizeRect( rect );
 
#if defined( __WXMSW__ )
#if !wxCHECK_VERSION( 3, 3, 0 )
    rect.Offset( -1, 0 );
    // hack no longer needed with wx 3.3
    rect.SetHeight( rect.GetHeight() + 6 );
#else
    rect.Offset( 0, 1 );
#endif
#elif defined( __WXGTK__ )
    rect.Offset( -1, 3 );
#else
    rect.Offset( 1, 3 );
    rect.SetWidth( rect.GetWidth() - 1 );
    rect.SetHeight( rect.GetHeight() - 4 );
#endif
    wxGridCellEditor::SetSize( rect );
}
 
 
void GRID_CELL_STC_EDITOR::Create( wxWindow* aParent, wxWindowID aId, wxEvtHandler* aEventHandler )
{
    m_control = new wxStyledTextCtrl( aParent, wxID_ANY, wxDefaultPosition, wxSize( 0, 0 ),
                                      wxBORDER_NONE );
 
    stc_ctrl()->SetTabIndents( false );
    stc_ctrl()->SetBackSpaceUnIndents( false );
    stc_ctrl()->SetViewEOL( false );
    stc_ctrl()->SetViewWhiteSpace( false );
    stc_ctrl()->SetIndentationGuides( false );
    stc_ctrl()->SetMarginWidth( 0, 0 ); // Symbol margin
    stc_ctrl()->SetMarginWidth( 1, 0 ); // Line-number margin
    stc_ctrl()->SetEOLMode( wxSTC_EOL_LF );
 
    if( !m_singleLine )
    {
        // Wrapping is display-only and does not insert newlines into the stored text.
        stc_ctrl()->SetWrapMode( wxSTC_WRAP_WORD );
        stc_ctrl()->SetWrapVisualFlags( wxSTC_WRAPVISUALFLAG_END );
        stc_ctrl()->SetWrapIndentMode( wxSTC_WRAPINDENT_INDENT );
    }
 
    stc_ctrl()->AutoCompSetMaxWidth( 25 );
    stc_ctrl()->AutoCompSetIgnoreCase( m_ignoreCase );
    stc_ctrl()->UsePopUp( 0 );
 
    // A hack which causes Scintilla to auto-size the text editor canvas
    // See: https://github.com/jacobslusser/ScintillaNET/issues/216
    stc_ctrl()->SetScrollWidth( 1 );
    stc_ctrl()->SetScrollWidthTracking( true );
 
    m_scintillaTricks = new SCINTILLA_TRICKS(
            stc_ctrl(), wxEmptyString, m_singleLine,
 
            // onAcceptFn
            [this]( wxKeyEvent& aEvent )
            {
                HandleReturn( aEvent );
            },
 
            // onCharFn
            [this]( wxStyledTextEvent& aEvent )
            {
                m_onCharFn( aEvent, m_scintillaTricks );
            } );
 
    stc_ctrl()->Bind( wxEVT_KILL_FOCUS, &GRID_CELL_STC_EDITOR::onFocusLoss, this );
 
    wxGridCellEditor::Create( aParent, aId, aEventHandler );
}
 
 
wxStyledTextCtrl* GRID_CELL_STC_EDITOR::stc_ctrl() const
{
    return static_cast<wxStyledTextCtrl*>( m_control );
}
 
 
wxString GRID_CELL_STC_EDITOR::GetValue() const
{
    return stc_ctrl()->GetText();
}
 
 
void GRID_CELL_STC_EDITOR::StartingKey( wxKeyEvent& event )
{
    int ch;
 
    bool isPrintable;
 
#if wxUSE_UNICODE
    ch = event.GetUnicodeKey();
 
    if( ch != WXK_NONE )
        isPrintable = true;
    else
#endif // wxUSE_UNICODE
    {
        ch = event.GetKeyCode();
        isPrintable = ch >= WXK_SPACE && ch < WXK_START;
    }
 
    switch( ch )
    {
    case WXK_DELETE:
        // Delete the initial character when starting to edit with DELETE.
        stc_ctrl()->DeleteRange( 0, 1 );
        break;
 
    case WXK_BACK:
        // Delete the last character when starting to edit with BACKSPACE.
        stc_ctrl()->DeleteBack();
        break;
 
    default:
        if( isPrintable )
            stc_ctrl()->WriteText( static_cast<wxChar>( ch ) );
        break;
    }
}
 
 
void GRID_CELL_STC_EDITOR::Show( bool aShow, wxGridCellAttr* aAttr )
{
    if( !aShow )
        stc_ctrl()->AutoCompCancel();
 
    wxGridCellEditor::Show( aShow, aAttr );
}
 
 
void GRID_CELL_STC_EDITOR::BeginEdit( int aRow, int aCol, wxGrid* aGrid )
{
    auto evtHandler = static_cast<wxGridCellEditorEvtHandler*>( m_control->GetEventHandler() );
 
    // Don't immediately end if we get a kill focus event within BeginEdit
    evtHandler->SetInSetFocus( true );
 
    m_value = aGrid->GetTable()->GetValue( aRow, aCol );
 
    stc_ctrl()->SetFocus();
    stc_ctrl()->SetText( m_value );
    stc_ctrl()->SelectAll();
}
 
 
bool GRID_CELL_STC_EDITOR::EndEdit( int, int, const wxGrid*, const wxString&, wxString *aNewVal )
{
    const wxString value = stc_ctrl()->GetText();
 
    if( value == m_value )
        return false;
 
    m_value = value;
 
    if( aNewVal )
        *aNewVal = value;
 
    return true;
}
 
 
void GRID_CELL_STC_EDITOR::ApplyEdit( int aRow, int aCol, wxGrid* aGrid )
{
    aGrid->GetTable()->SetValue( aRow, aCol, m_value );
}
 
 
void GRID_CELL_STC_EDITOR::onFocusLoss( wxFocusEvent& aEvent )
{
    if( stc_ctrl() )
        stc_ctrl()->AutoCompCancel();
 
    aEvent.Skip();
}
 
 
//-------- Editor Base Class for GRID_TEXT_BUTTON_HELPERS ------------
//
// Note: this implementation is an adaptation of wxGridCellChoiceEditor
//
// Note: this class is here instead of in grid_text_button_helpers.h/cpp to
// keep from dragging a ton of stuff into kicommon.
 
 
wxString GRID_CELL_TEXT_BUTTON::GetValue() const
{
    return Combo()->GetValue();
}
 
 
void GRID_CELL_TEXT_BUTTON::SetSize( const wxRect& aRect )
{
    wxRect rect( aRect );
    WX_GRID::CellEditorTransformSizeRect( rect );
 
    wxGridCellEditor::SetSize( rect );
}
 
 
void GRID_CELL_TEXT_BUTTON::StartingKey( wxKeyEvent& event )
{
    // Note: this is a copy of wxGridCellTextEditor's StartingKey()
 
    // Since this is now happening in the EVT_CHAR event EmulateKeyPress is no
    // longer an appropriate way to get the character into the text control.
    // Do it ourselves instead.  We know that if we get this far that we have
    // a valid character, so not a whole lot of testing needs to be done.
 
    // wxComboCtrl inherits from wxTextEntry, so can statically cast
    wxTextEntry* textEntry = static_cast<wxTextEntry*>( Combo() );
    int ch;
 
    bool isPrintable;
 
#if wxUSE_UNICODE
    ch = event.GetUnicodeKey();
 
    if( ch != WXK_NONE )
        isPrintable = true;
    else
#endif // wxUSE_UNICODE
    {
        ch = event.GetKeyCode();
        isPrintable = ch >= WXK_SPACE && ch < WXK_START;
    }
 
    switch( ch )
    {
    case WXK_DELETE:
        // Delete the initial character when starting to edit with DELETE.
        textEntry->Remove( 0, 1 );
        break;
 
    case WXK_BACK:
        // Delete the last character when starting to edit with BACKSPACE.
    {
        const long pos = textEntry->GetLastPosition();
        textEntry->Remove( pos - 1, pos );
    }
        break;
 
    default:
        if( isPrintable )
            textEntry->WriteText( static_cast<wxChar>( ch ) );
 
        break;
    }
}
 
 
void GRID_CELL_TEXT_BUTTON::BeginEdit( int aRow, int aCol, wxGrid* aGrid )
{
    m_grid = aGrid;
    m_row = aRow;
    m_col = aCol;
 
    auto evtHandler = static_cast< wxGridCellEditorEvtHandler* >( m_control->GetEventHandler() );
 
    // Don't immediately end if we get a kill focus event within BeginEdit
    evtHandler->SetInSetFocus( true );
 
    m_value = aGrid->GetTable()->GetValue( aRow, aCol );
 
    Combo()->SetValue( m_value );
    Combo()->SetFocus();
 
    // Bind event to handle text changes
    Combo()->Bind( wxEVT_TEXT, &GRID_CELL_TEXT_BUTTON::OnTextChange, this );
}
 
 
void GRID_CELL_TEXT_BUTTON::OnTextChange( wxCommandEvent& event )
{
    if( m_grid && m_row >= 0 && m_row < m_grid->GetNumberRows() && m_col >= 0 && m_col < m_grid->GetNumberCols() )
    {
        wxGridEvent evt( m_grid->GetId(), wxEVT_GRID_CELL_CHANGING, m_grid, m_row, m_col );
        evt.SetString( Combo()->GetValue() );
        m_grid->GetEventHandler()->ProcessEvent( evt );
    }
 
    event.Skip(); // Ensure that other handlers can process this event too
}
 
 
bool GRID_CELL_TEXT_BUTTON::EndEdit( int, int, const wxGrid*, const wxString&, wxString *aNewVal )
{
    Combo()->Unbind( wxEVT_TEXT, &GRID_CELL_TEXT_BUTTON::OnTextChange, this );
    m_grid = nullptr;
    m_row = -1;
    m_col = -1;
 
    const wxString value = Combo()->GetValue();
 
    if( value == m_value )
        return false;
 
    m_value = value;
 
    if( aNewVal )
        *aNewVal = value;
 
    return true;
}
 
 
void GRID_CELL_TEXT_BUTTON::ApplyEdit( int aRow, int aCol, wxGrid* aGrid )
{
    aGrid->GetTable()->SetValue( aRow, aCol, m_value );
}
 
 
void GRID_CELL_TEXT_BUTTON::Reset()
{
    Combo()->SetValue( m_value );
}
 
 
#if wxUSE_VALIDATORS
void GRID_CELL_TEXT_BUTTON::SetValidator( const wxValidator& validator )
{
    m_validator.reset( static_cast< wxValidator* >( validator.Clone() ) );
}
#endif