Method UpdateAdjustmentFromText

src/SFGUI/SpinButton.cpp:302–329

}

void SpinButton::UpdateAdjustmentFromText() {
	if( !GetText().getSize() ) {
		m_adjustment->SetValue( m_adjustment->GetLower() );
		return;
	}

	std::istringstream text( GetText().toAnsiString() );

	float value;

	if( !( text >> value ) || !text.eof() ) {
		m_adjustment->SetValue( m_adjustment->GetLower() );
		return;
	}

	auto offset = value - m_adjustment->GetLower();
	auto multiple = ( m_adjustment->GetMinorStep() != 0.f ) ? ( offset / m_adjustment->GetMinorStep() ) : 0.f;
	auto step_offset = offset - std::floor( multiple ) * m_adjustment->GetMinorStep();

	if( step_offset >= m_adjustment->GetMinorStep() / 2.f ) {
		value = m_adjustment->GetLower() + std::ceil( multiple ) * m_adjustment->GetMinorStep();
	}
	else {
		value = m_adjustment->GetLower() + std::floor( multiple ) * m_adjustment->GetMinorStep();
	}

	m_adjustment->SetValue( value );
}

}