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5f578c884c
Normal SetValue() call would temporarily change the displayed value, but as soon as the text widget receives focus again, the original expression (not evaluated) is restored. To avoid this, the original expression is cleared in the associated NumericEvaluator object.
71 lines
2.4 KiB
C++
71 lines
2.4 KiB
C++
/*
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* This program source code file is part of KiCad, a free EDA CAD application.
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*
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* Copyright (C) 2017-2018 CERN
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* @author Maciej Suminski <maciej.suminski@cern.ch>
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 3
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, you may find one here:
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* http://www.gnu.org/licenses/old-licenses/gpl-3.0.html
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* or you may search the http://www.gnu.org website for the version 3 license,
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* or you may write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
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*/
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#ifndef TEXT_CTRL_EVAL_H
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#define TEXT_CTRL_EVAL_H
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#include <wx/window.h>
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#include <wx/textctrl.h>
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#include <libeval/numeric_evaluator.h>
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/**
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* @brief wxTextCtrl wrapper to handle math expression evaluation.
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* Expressions are evaluated after the text control loses the focus. If user decides to modify
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* the expression, he will get the original expression to modify.
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*/
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class TEXT_CTRL_EVAL : public wxTextCtrl
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{
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public:
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TEXT_CTRL_EVAL( wxWindow* aParent, wxWindowID aId, const wxString& aValue = wxEmptyString,
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const wxPoint& aPos = wxDefaultPosition, const wxSize& aSize = wxDefaultSize,
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long aStyle = 0, const wxValidator& aValidator = wxDefaultValidator,
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const wxString& aName = wxTextCtrlNameStr );
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virtual ~TEXT_CTRL_EVAL()
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{
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}
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/**
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* Set a new value in evaluator buffer, and display it
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* in the wxTextCtrl.
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* @param aValue is the new value to store and display
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* if aValue is empty, the value "0" is stored and displayed
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*/
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void SetValue( const wxString& aValue ) override;
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protected:
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///> Numeric expression evaluator
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NumericEvaluator m_eval;
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void onTextFocusGet( wxFocusEvent& aEvent );
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void onTextFocusLost( wxFocusEvent& aEvent );
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void onTextEnter( wxCommandEvent& aEvent );
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void evaluate();
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};
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#endif /* TEXT_CTRL_EVAL_H */
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