508 lines
11 KiB
C++
508 lines
11 KiB
C++
/*
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* This file is a part of TTCalc - a mathematical calculator
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* and is distributed under the (new) BSD licence.
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* Author: Tomasz Sowa <t.sowa@slimaczek.pl>
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*/
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/*
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* Copyright (c) 2006-2009, Tomasz Sowa
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* * Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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*
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* * Neither the name Tomasz Sowa nor the names of contributors to this
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* project may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
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* THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <windows.h>
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#include <ttmath/ttmath.h>
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#include "programresources.h"
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#include "resource.h"
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#include "messages.h"
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#include "bigtypes.h"
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namespace Pad
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{
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HWND edit;
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WNDPROC old_edit_proc;
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std::string parse_string;
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int precision;
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HFONT font;
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int base_input;
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int base_output;
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bool always_scientific;
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int when_scientific;
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int rounding;
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bool remove_zeroes;
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int angle_deg_rad_grad;
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char decimal_point;
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Languages::Country country;
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ttmath::Objects * variables;
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ttmath::Objects * functions;
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ttmath::ErrorCode code;
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bool calculated;
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std::string res, res2;
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#ifndef TTCALC_PORTABLE
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ttmath::Parser<TTMathBig1> parser1;
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ttmath::Parser<TTMathBig2> parser2;
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ttmath::Parser<TTMathBig3> parser3;
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#else
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ttmath::Parser<TTMathBig1> parser1;
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#endif
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void PutChars(const char * str)
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{
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SendMessage(edit, EM_REPLACESEL, true, (LPARAM)str);
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}
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void PutChars(std::string & str)
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{
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PutChars(str.c_str());
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}
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void PutOverflowMsg()
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{
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PutChars(GetPrgRes()->GetLanguages()->ErrorMessage(country, ttmath::err_overflow));
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PutChars("\r\n");
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}
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template<typename ValueType>
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void PutResultFromParser(ttmath::Parser<ValueType> & matparser)
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{
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unsigned int i = 0;
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res.clear();
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res2.clear();
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for(i=0 ; i<matparser.stack.size() ; ++i)
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{
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try
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{
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ValueType result = matparser.stack[i].value;
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if( result.ToString(res2, base_output, always_scientific, when_scientific, rounding, remove_zeroes, decimal_point) )
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res2 = GetPrgRes()->GetLanguages()->GuiMessage(country, Languages::overflow_during_printing);
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}
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catch(...)
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{
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res2 = GetPrgRes()->GetLanguages()->ErrorMessage(country, ttmath::err_internal_error);
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}
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res += res2;
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if( i < matparser.stack.size()-1 )
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res += "\r\n";
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}
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res += ' ';
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PutChars(res);
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}
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void PutResult()
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{
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#ifndef TTCALC_PORTABLE
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switch( precision )
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{
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case 0:
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PutResultFromParser(parser1);
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break;
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case 1:
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PutResultFromParser(parser2);
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break;
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default:
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PutResultFromParser(parser3);
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break;
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}
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#else
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PutResultFromParser(parser1);
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#endif
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}
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// line - index of a line -- as you see it on the edit control
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// (if the text is wrapped then the line is larger)
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void GetParseString(const char * buf, int line)
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{
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int i;
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int first_line_char = SendMessage(edit, EM_LINEINDEX, line, 0);
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// first_line_char takes into consideration \r\n characters
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if( first_line_char < 0 )
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// something wrong
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return;
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// looking for the line
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for(i=0 ; i<first_line_char && buf[i]!=0 ; ++i);
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// looking for the beginning of the line
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for( ; i>0 && buf[i-1]!=10 ; --i);
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// copying the whole line
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for( ; buf[i]!=0 && buf[i]!='\r' && buf[i]!='\n' ; ++i )
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parse_string += buf[i];
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}
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void GetParseString()
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{
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int line;
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parse_string.clear();
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// index of a last line to parse (-1 because the ENTER has been put)
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line = SendMessage(edit, EM_LINEFROMCHAR, -1, 0) - 1;
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if( line < 0 )
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// something wrong
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return;
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HLOCAL handle = (HLOCAL)SendMessage(edit, EM_GETHANDLE, 0, 0);
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if( handle == 0 )
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// something wrong
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return;
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const char * buf = (const char*)LocalLock(handle);
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if( buf )
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GetParseString(buf, line);
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LocalUnlock(handle);
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}
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template<class ValueType>
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void ParseString(ttmath::Parser<ValueType> & matparser)
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{
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matparser.SetBase(base_input);
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matparser.SetDegRadGrad(angle_deg_rad_grad);
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matparser.SetFunctions(functions);
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matparser.SetVariables(variables);
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code = matparser.Parse(parse_string.c_str());
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calculated = matparser.Calculated();
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}
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void SetParameters()
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{
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base_input = GetPrgRes()->GetBaseInput();
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base_output = GetPrgRes()->GetBaseOutput();
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always_scientific = GetPrgRes()->GetDisplayAlwaysScientific();
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when_scientific = GetPrgRes()->GetDisplayWhenScientific();
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rounding = GetPrgRes()->GetDisplayRounding();
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precision = GetPrgRes()->GetPrecision();
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remove_zeroes = GetPrgRes()->GetRemovingZeroes();
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angle_deg_rad_grad = GetPrgRes()->GetDegRadGrad();
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country = GetPrgRes()->GetLanguages()->GetCurrentLanguage();
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if( GetPrgRes()->GetDecimalPoint() == 0 )
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decimal_point = '.';
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else
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decimal_point = ',';
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variables = GetPrgRes()->GetVariables();
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functions = GetPrgRes()->GetFunctions();
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}
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void ParseString()
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{
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if( parse_string.empty() )
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return;
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SetParameters();
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try
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{
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#ifndef TTCALC_PORTABLE
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switch( precision )
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{
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case 0:
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ParseString(parser1);
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break;
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case 1:
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ParseString(parser2);
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break;
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default:
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ParseString(parser3);
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break;
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}
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#else
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ParseString(parser1);
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#endif
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}
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catch(...)
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{
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code = ttmath::err_internal_error;
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}
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if( code==ttmath::err_ok && calculated )
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PutResult();
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else
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if( code==ttmath::err_overflow )
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PutOverflowMsg();
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}
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LRESULT EditReturnPressed(HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam)
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{
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DWORD sel_start, sel_end;
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SendMessage(edit, EM_GETSEL, (WPARAM)&sel_start, (LPARAM)&sel_end);
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if( sel_start != sel_end )
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// something is selected
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return CallWindowProc(old_edit_proc, hwnd, msg, wParam, lParam);
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// putting the ENTER
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LRESULT res = CallWindowProc(old_edit_proc, hwnd, msg, wParam, lParam);
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GetParseString();
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ParseString();
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return res;
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}
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LRESULT EditSubclass(HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam)
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{
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switch( msg )
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{
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case WM_CHAR:
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if( wParam == VK_RETURN )
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{
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return EditReturnPressed(hwnd, msg, wParam, lParam);
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}
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break;
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}
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return CallWindowProc(old_edit_proc, hwnd, msg, wParam, lParam);
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}
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LRESULT PadCreate(HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam)
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{
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edit = CreateWindow("edit", "",
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WS_VISIBLE | WS_CHILD | WS_VSCROLL | ES_MULTILINE | ES_AUTOVSCROLL,
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0, 0, 100, 100, hwnd, 0, GetPrgRes()->GetInstance(), 0);
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if( !edit )
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return 0;
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old_edit_proc = (WNDPROC)SetWindowLong(edit, GWL_WNDPROC, (LONG)EditSubclass);
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// 65535 - 64KB
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// we're using some kind of messages which operates only on 64KB
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SendMessage(edit, EM_SETLIMITTEXT, 65535 - 5, 0);
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if( font != 0 )
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SendMessage(edit, WM_SETFONT, (WPARAM)font, 0);
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return 0;
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}
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LRESULT PadMove(HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam)
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{
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RECT r;
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GetWindowRect(hwnd,&r);
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GetPrgRes()->SetPadXPos( r.left );
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GetPrgRes()->SetPadYPos( r.top );
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return 0;
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}
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LRESULT PadSize(HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam)
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{
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// client coordinates
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int cx = LOWORD(lParam);
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int cy = HIWORD(lParam);
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int fwSizeType = int(wParam);
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RECT r;
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if( fwSizeType == SIZE_MAXIMIZED )
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GetPrgRes()->SetPadMaximized(true);
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else
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if( fwSizeType == SIZE_RESTORED )
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GetPrgRes()->SetPadMaximized(false);
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MoveWindow(edit, 0, 0, cx, cy, true);
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if( fwSizeType != SIZE_MINIMIZED && fwSizeType != SIZE_MAXIMIZED )
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{
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GetWindowRect(hwnd, &r);
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GetPrgRes()->SetPadXSize( r.right - r.left );
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GetPrgRes()->SetPadYSize( r.bottom - r.top );
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}
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return 0;
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}
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LRESULT PadClose(HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam)
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{
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GetPrgRes()->ShowPad( false );
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return 0;
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}
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LRESULT PadFocus(HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam)
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{
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SetFocus(edit);
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return 0;
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}
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void CreatePadMessagesTable(Messages<LRESULT> & messages)
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{
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messages.Associate(WM_CREATE, PadCreate);
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messages.Associate(WM_MOVE, PadMove);
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messages.Associate(WM_SIZE, PadSize);
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messages.Associate(WM_CLOSE, PadClose);
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messages.Associate(WM_SETFOCUS, PadFocus);
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}
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LRESULT CALLBACK WindowPadProc(HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam)
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{
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static Messages<LRESULT> messages;
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bool method_exists;
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LRESULT res;
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if( messages.Empty() )
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// initiation
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CreatePadMessagesTable(messages);
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res = messages.Call(msg, hwnd, msg, wParam, lParam, &method_exists);
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if( !method_exists )
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return DefWindowProc(hwnd, msg, wParam, lParam);
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return res;
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}
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ATOM RegisterPadClass(const char * ttcalc_pad_class_name)
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{
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WNDCLASS w;
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w.style = 0;
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w.lpfnWndProc = WindowPadProc;
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w.cbClsExtra = 0;
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w.cbWndExtra = 0;
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w.hInstance = GetPrgRes()->GetInstance();
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w.hIcon = LoadIcon(GetPrgRes()->GetInstance(), MAKEINTRESOURCE(IDI_ICON2));
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w.hCursor = 0;
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w.hbrBackground = (HBRUSH)(COLOR_BACKGROUND+1);
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w.lpszMenuName = 0;
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w.lpszClassName = ttcalc_pad_class_name;
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return RegisterClass(&w);
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}
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} // namespace Pad
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bool CreatePadWindow()
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{
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using namespace Pad;
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static char ttcalc_pad_class_name[] = "TTCalcPadWindow";
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ATOM a = RegisterPadClass(ttcalc_pad_class_name);
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if( a == 0 )
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return false;
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bool pad_maximized_from_file = GetPrgRes()->GetPadMaximized();
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// CreateWindow() would change maximizing
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font = CreateFont(0, 0, 0, 0, FW_NORMAL, false, false, false,
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ANSI_CHARSET, OUT_DEFAULT_PRECIS, CLIP_DEFAULT_PRECIS,
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DEFAULT_QUALITY, DEFAULT_PITCH, "Ms Shell Dlg");
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HWND pad = CreateWindowEx(0, ttcalc_pad_class_name,
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"Pad",
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WS_OVERLAPPEDWINDOW | WS_POPUPWINDOW ,
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GetPrgRes()->GetPadXPos(), GetPrgRes()->GetPadYPos(),
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GetPrgRes()->GetPadXSize(), GetPrgRes()->GetPadYSize(),
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0 /*GetPrgRes()->GetMainWindow()*/, 0, GetPrgRes()->GetInstance(), 0);
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GetPrgRes()->SetPadWindow(pad);
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GetPrgRes()->SetPadMaximized( pad_maximized_from_file );
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GetPrgRes()->ShowPad( GetPrgRes()->IsPadVisible() );
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return pad!=0 && edit!=0;
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}
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void DestroyPadWindow()
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{
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using namespace Pad;
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DeleteObject(font);
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}
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