kicad/common/widgets/unit_binder.cpp

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/*
* This program source code file is part of KiCad, a free EDA CAD application.
*
* Copyright (C) 2014-2015 CERN
* Author: Maciej Suminski <maciej.suminski@cern.ch>
*
* 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 2
* 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/stattext.h>
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#include <wx/textentry.h>
#include <limits>
#include <base_units.h>
#include <eda_draw_frame.h>
#include <confirm.h>
#include "widgets/unit_binder.h"
wxDEFINE_EVENT( DELAY_FOCUS, wxCommandEvent );
UNIT_BINDER::UNIT_BINDER( EDA_DRAW_FRAME* aParent,
wxStaticText* aLabel, wxWindow* aValue, wxStaticText* aUnitLabel,
bool aUseMils, bool allowEval ) :
m_label( aLabel ),
m_value( aValue ),
m_unitLabel( aUnitLabel ),
m_eval( aParent->GetUserUnits(), aUseMils )
{
// Fix the units (to the current units) for the life of the binder
m_units = aParent->GetUserUnits();
m_useMils = aUseMils;
m_allowEval = allowEval && dynamic_cast<wxTextEntry*>( m_value );
m_needsEval = false;
auto textEntry = dynamic_cast<wxTextEntry*>( m_value );
if( textEntry )
{
// Use ChangeValue() instead of SetValue() so we don't generate events.
textEntry->ChangeValue( wxT( "0" ) );
}
m_unitLabel->SetLabel( GetAbbreviatedUnitsLabel( m_units, m_useMils ) );
m_value->Connect( wxEVT_SET_FOCUS, wxFocusEventHandler( UNIT_BINDER::onSetFocus ), NULL, this );
m_value->Connect( wxEVT_KILL_FOCUS, wxFocusEventHandler( UNIT_BINDER::onKillFocus ), NULL, this );
Connect( DELAY_FOCUS, wxCommandEventHandler( UNIT_BINDER::delayedFocusHandler ), NULL, this );
}
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void UNIT_BINDER::SetUnits( EDA_UNITS_T aUnits, bool aUseMils )
{
m_units = aUnits;
m_useMils = aUseMils;
m_unitLabel->SetLabel( GetAbbreviatedUnitsLabel( m_units, m_useMils ) );
}
void UNIT_BINDER::onSetFocus( wxFocusEvent& aEvent )
{
auto textEntry = dynamic_cast<wxTextEntry*>( m_value );
if( m_allowEval && textEntry )
{
wxString oldStr = m_eval.OriginalText();
if( oldStr.length() )
textEntry->SetValue( oldStr );
m_needsEval = true;
}
aEvent.Skip();
}
void UNIT_BINDER::onKillFocus( wxFocusEvent& aEvent )
{
auto textEntry = dynamic_cast<wxTextEntry*>( m_value );
if( m_allowEval && textEntry )
{
if( m_eval.Process( textEntry->GetValue() ) )
textEntry->ChangeValue( m_eval.Result() );
m_needsEval = false;
}
aEvent.Skip();
}
wxString valueDescriptionFromLabel( wxStaticText* aLabel )
{
wxString desc = aLabel->GetLabel();
desc.EndsWith( wxT( ":" ), &desc );
return desc;
}
void UNIT_BINDER::delayedFocusHandler( wxCommandEvent& )
{
if( !m_errorMessage.IsEmpty() )
DisplayError( m_value->GetParent(), m_errorMessage );
m_errorMessage = wxEmptyString;
m_value->SetFocus();
}
bool UNIT_BINDER::Validate( int aMin, int aMax, bool setFocusOnError )
{
auto textEntry = dynamic_cast<wxTextEntry*>( m_value );
if( !textEntry || textEntry->GetValue() == INDETERMINATE )
return true;
if( GetValue() < aMin )
{
m_errorMessage = wxString::Format( _( "%s must be at least %s." ),
valueDescriptionFromLabel( m_label ),
StringFromValue( m_units, aMin, true ) );
if( setFocusOnError )
{
textEntry->SelectAll();
// Don't focus directly; we might be inside a KillFocus event handler
wxPostEvent( this, wxCommandEvent( DELAY_FOCUS ) );
}
return false;
}
if( GetValue() > aMax )
{
m_errorMessage = wxString::Format( _( "%s must be less than %s." ),
valueDescriptionFromLabel( m_label ),
StringFromValue( m_units, aMax, true ) );
if( setFocusOnError )
{
textEntry->SelectAll();
// Don't focus directly; we might be inside a KillFocus event handler
wxPostEvent( this, wxCommandEvent( DELAY_FOCUS ) );
}
return false;
}
return true;
}
void UNIT_BINDER::SetValue( int aValue )
{
SetValue( StringFromValue( m_units, aValue, false, m_useMils ) );
}
void UNIT_BINDER::SetValue( wxString aValue )
{
auto textEntry = dynamic_cast<wxTextEntry*>( m_value );
auto staticText = dynamic_cast<wxStaticText*>( m_value );
if( textEntry )
textEntry->SetValue( aValue );
else if( staticText )
staticText->SetLabel( aValue );
if( m_allowEval )
m_eval.Clear();
m_unitLabel->SetLabel( GetAbbreviatedUnitsLabel( m_units, m_useMils ) );
}
void UNIT_BINDER::ChangeValue( int aValue )
{
ChangeValue( StringFromValue( m_units, aValue, false, m_useMils ) );
}
void UNIT_BINDER::ChangeValue( wxString aValue )
{
auto textEntry = dynamic_cast<wxTextEntry*>( m_value );
auto staticText = dynamic_cast<wxStaticText*>( m_value );
if( textEntry )
textEntry->ChangeValue( aValue );
else if( staticText )
staticText->SetLabel( aValue );
if( m_allowEval )
m_eval.Clear();
m_unitLabel->SetLabel( GetAbbreviatedUnitsLabel( m_units, m_useMils ) );
}
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int UNIT_BINDER::GetValue()
{
auto textEntry = dynamic_cast<wxTextEntry*>( m_value );
auto staticText = dynamic_cast<wxStaticText*>( m_value );
wxString value;
if( textEntry )
{
if( m_needsEval && m_eval.Process( textEntry->GetValue() ) )
value = m_eval.Result();
else
value = textEntry->GetValue();
}
else if( staticText )
value = staticText->GetLabel();
else
return 0;
return ValueFromString( m_units, value, m_useMils );
}
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bool UNIT_BINDER::IsIndeterminate() const
{
auto textEntry = dynamic_cast<wxTextEntry*>( m_value );
if( textEntry )
return textEntry->GetValue() == INDETERMINATE;
return false;
}
void UNIT_BINDER::SetLabel( const wxString& aLabel )
{
m_label->SetLabel( aLabel );
}
void UNIT_BINDER::Enable( bool aEnable )
{
m_label->Enable( aEnable );
m_value->Enable( aEnable );
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m_unitLabel->Enable( aEnable );
}
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void UNIT_BINDER::Show( bool aShow, bool aResize )
{
m_label->Show( aShow );
m_value->Show( aShow );
m_unitLabel->Show( aShow );
if( aResize )
{
if( aShow )
{
m_label->SetSize( -1, -1 );
m_value->SetSize( -1, -1 );
m_unitLabel->SetSize( -1, -1 );
}
else
{
m_label->SetSize( 0, 0 );
m_value->SetSize( 0, 0 );
m_unitLabel->SetSize( 0, 0 );
}
}
}