kicad/common/widgets/wx_combobox.cpp

186 lines
4.9 KiB
C++

/*
* This program source code file is part of KiCad, a free EDA CAD application.
*
* Copyright (C) 2022 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, see <http://www.gnu.org/licenses/>.
*/
#include <functional>
#include <widgets/wx_combobox.h>
#include <wx/dc.h>
#include <wx/pen.h>
#include <wx/settings.h>
#define SEPARATOR wxT( "---" )
WX_COMBOBOX::WX_COMBOBOX( wxWindow* aParent, int aId, const wxString& aValue, const wxPoint& aPos,
const wxSize& aSize, int n, const wxString choices[], long style ) :
wxOwnerDrawnComboBox( aParent, aId, aValue, aPos, aSize, n, choices, style ),
m_lastSelection( 0 )
{
}
WX_COMBOBOX::~WX_COMBOBOX()
{
}
void WX_COMBOBOX::DoSetPopupControl( wxComboPopup* aPopup )
{
using namespace std::placeholders;
wxOwnerDrawnComboBox::DoSetPopupControl( aPopup );
// Bind events to intercept selections, so the separator can be made nonselectable.
GetVListBoxComboPopup()->Bind( wxEVT_MOTION, &WX_COMBOBOX::TryVetoMouse, this );
GetVListBoxComboPopup()->Bind( wxEVT_LEFT_DOWN, &WX_COMBOBOX::TryVetoMouse, this );
GetVListBoxComboPopup()->Bind( wxEVT_LEFT_UP, &WX_COMBOBOX::TryVetoMouse, this );
GetVListBoxComboPopup()->Bind( wxEVT_LEFT_DCLICK, &WX_COMBOBOX::TryVetoMouse, this );
GetVListBoxComboPopup()->Bind( wxEVT_LISTBOX, std::bind( &WX_COMBOBOX::TryVetoSelect,
this, _1, true ) );
Bind( wxEVT_COMBOBOX, std::bind( &WX_COMBOBOX::TryVetoSelect, this, _1, false ) );
}
void WX_COMBOBOX::OnDrawItem( wxDC& aDC, wxRect const& aRect, int aItem, int aFlags ) const
{
wxString text = GetMenuText( aItem );
if( text == SEPARATOR )
{
wxPen pen( wxSystemSettings::GetColour( wxSYS_COLOUR_GRAYTEXT ), 1 );
aDC.SetPen( pen );
aDC.DrawLine( aRect.x, aRect.y + aRect.height / 2, aRect.x + aRect.width,
aRect.y + aRect.height / 2 );
}
else
{
wxCoord x, y;
if( aFlags & wxODCB_PAINTING_CONTROL )
{
x = aRect.x + GetMargins().x;
y = ( aRect.height - aDC.GetCharHeight() ) / 2 + aRect.y;
}
else
{
x = aRect.x + 2;
y = aRect.y;
}
aDC.DrawText( text, x, y );
}
}
int WX_COMBOBOX::GetCharHeight() const
{
return wxOwnerDrawnComboBox::GetCharHeight() + 2;
}
wxCoord WX_COMBOBOX::OnMeasureItem( size_t aItem ) const
{
if( GetMenuText( aItem ) == SEPARATOR )
return 11;
else
return wxOwnerDrawnComboBox::OnMeasureItem( aItem );
}
wxCoord WX_COMBOBOX::OnMeasureItemWidth( size_t aItem ) const
{
if( GetMenuText( aItem ) == SEPARATOR )
return GetTextRect().GetWidth() - 2;
else
return wxOwnerDrawnComboBox::OnMeasureItemWidth( aItem );
}
void WX_COMBOBOX::TryVetoMouse( wxMouseEvent& aEvent )
{
int item = GetVListBoxComboPopup()->VirtualHitTest( aEvent.GetPosition().y );
if( GetMenuText( item ) != SEPARATOR )
aEvent.Skip();
}
void WX_COMBOBOX::TryVetoSelect( wxCommandEvent& aEvent, bool aInner )
{
int sel = GetSelectionEither( aInner );
if( sel >= 0 && sel < (int) GetCount() )
{
wxString text = GetMenuText( sel );
if( text == SEPARATOR )
{
SetSelectionEither( aInner, m_lastSelection );
}
else
{
m_lastSelection = sel;
aEvent.Skip();
}
}
}
void WX_COMBOBOX::Append( const wxString& aText, const wxString& aMenuText )
{
if( !aMenuText.IsEmpty() )
m_menuText[ GetCount() ] = aMenuText;
wxOwnerDrawnComboBox::Append( aText );
}
wxString WX_COMBOBOX::GetMenuText( int aItem ) const
{
if( m_menuText.count( aItem ) )
return m_menuText.at( aItem );
else if( aItem >= 0 && aItem < (int) GetCount() )
return GetVListBoxComboPopup()->GetString( aItem );
else
return wxEmptyString;
}
int WX_COMBOBOX::GetSelectionEither( bool aInner ) const
{
if( aInner )
return GetVListBoxComboPopup()->wxVListBox::GetSelection();
else
return GetSelection();
}
void WX_COMBOBOX::SetSelectionEither( bool aInner, int aSel )
{
if( aSel >= 0 && aSel < (int) GetCount() )
{
if( aInner )
return GetVListBoxComboPopup()->wxVListBox::SetSelection( aSel );
else
return SetSelection( aSel );
}
}