graphitedoc.cpp

这是在wince下面可以跑的一个画函数的软件

//
//	Graphite For WinCE(Pocket PC)
//  Initially Written By Hyouck "Hawk" Kim, [e-mail]
//	2002, All Rights Reserved
//
//	This is GPLed, open source based, software development project.
//	For more question about GPL,
//	visit http://www.gnu.org/licenses/gpl.txt
//
//	
//	Revision History
//	Nov/30/2002,		Initial Release		hkim	
//
//

// graphiteDoc.cpp : implementation of the CGraphiteDoc class
//

#include "stdafx.h"
#include "graphite.h"

#include "graphiteDoc.h"
#include "graphiteview.h"
#include "xyoptiondlg.h"
#include "mathinputdlg.h"
#include "stackmachine.h"
#include "mathlex.h"

#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif

/////////////////////////////////////////////////////////////////////////////
// CGraphiteDoc

IMPLEMENT_DYNCREATE(CGraphiteDoc, CDocument)

BEGIN_MESSAGE_MAP(CGraphiteDoc, CDocument)
	//{{AFX_MSG_MAP(CGraphiteDoc)
	ON_COMMAND(ID_SCROLL_DOWN, OnScrollDown)
	ON_COMMAND(ID_SCROLL_LEFT, OnScrollLeft)
	ON_COMMAND(ID_SCROLL_RIGHT, OnScrollRight)
	ON_COMMAND(ID_SCROLL_UP, OnScrollUp)
	ON_COMMAND(ID_MENU_SET_RANGE, OnMenuSetRange)
	ON_COMMAND(ID_MENU_MATH_INPUT, OnMenuMathInput)
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CGraphiteDoc construction/destruction

CGraphiteDoc::CGraphiteDoc()
{
	// TODO: add one-time construction code here
	m_maxX = 4.0;
	m_minX = -4.0;
	m_maxY = 4.0;
	m_minY = -4.0;
	m_deltaX = 0.1;

	m_scrollX = 1.0;
	m_scrollY = 1.0;

	m_plotTitle = L"";
}

CGraphiteDoc::~CGraphiteDoc()
{
}

BOOL CGraphiteDoc::OnNewDocument()
{
	if (!CDocument::OnNewDocument())
		return FALSE;

	// TODO: add reinitialization code here
	// (SDI documents will reuse this document)

	return TRUE;
}



/////////////////////////////////////////////////////////////////////////////
// CGraphiteDoc serialization

void CGraphiteDoc::Serialize(CArchive& ar)
{
	if (ar.IsStoring())
	{
		// TODO: add storing code here
	}
	else
	{
		// TODO: add loading code here
	}
}

/////////////////////////////////////////////////////////////////////////////
// CGraphiteDoc diagnostics

#ifdef _DEBUG
void CGraphiteDoc::AssertValid() const
{
	CDocument::AssertValid();
}

void CGraphiteDoc::Dump(CDumpContext& dc) const
{
	CDocument::Dump(dc);
}
#endif //_DEBUG

/////////////////////////////////////////////////////////////////////////////
// CGraphiteDoc commands

void CGraphiteDoc::OnScrollDown() 
{
	// TODO: Add your command handler code here
	m_maxY -= m_scrollY;
	m_minY -= m_scrollY;
	UpdateView();
}

void CGraphiteDoc::OnScrollLeft() 
{
	// TODO: Add your command handler code here
	m_maxX -= m_scrollX;
	m_minX -= m_scrollX;
	UpdateView();
}

void CGraphiteDoc::OnScrollRight() 
{
	// TODO: Add your command handler code here
	m_maxX += m_scrollX;
	m_minX += m_scrollX;
	UpdateView();
}

void CGraphiteDoc::OnScrollUp() 
{
	// TODO: Add your command handler code here
	m_maxY += m_scrollY;
	m_minY += m_scrollY;
	UpdateView();
}

void CGraphiteDoc::UpdateView()
{
	POSITION pos = GetFirstViewPosition();
	CGraphiteView* pView = (CGraphiteView*)GetNextView(pos);

	pView->DrawXYTitle(NULL);
	pView->DrawGraph(NULL);

	pView->Invalidate(TRUE);
}

void CGraphiteDoc::OnMenuSetRange() 
{
	// TODO: Add your command handler code here
	CXYOptionDlg dlg;

	dlg.m_delta_x	= m_deltaX;
	dlg.m_max_x		= m_maxX;
	dlg.m_min_x		= m_minX;
	dlg.m_max_y		= m_maxY;
	dlg.m_min_y		= m_minY;
	dlg.m_scroll_x	= m_scrollX;
	dlg.m_scroll_y	= m_scrollY;

	if(dlg.DoModal() == IDOK)
	{
		m_deltaX		= dlg.m_delta_x;
		m_maxX			= dlg.m_max_x;
		m_minX			= dlg.m_min_x;
		m_maxY			= dlg.m_max_y;
		m_minY			= dlg.m_min_y;
		m_scrollX		= dlg.m_scroll_x;
		m_scrollY		= dlg.m_scroll_y;

		UpdateView();
	}
}

double CGraphiteDoc::f(double x)
{
	// just test
	//return sin(2*x) + sin(4*x) + sin(8*x);
	return m_sm.execute(x);
}

void CGraphiteDoc::OnMenuMathInput() 
{
	// TODO: Add your command handler code here
	CMathInputDlg	dlg;

	dlg.m_math_input = m_plotTitle;
	if(dlg.DoModal() == IDOK)
	{
		CTokenList* list;

		list = new CTokenList();

		CMathParser parser(dlg.m_math_input, list);

		POSITION pos = GetFirstViewPosition();
		CGraphiteView* pView = 
			(CGraphiteView*)GetNextView(pos);

		if(parser.parse())
		{
			//pView->MessageBox(L"Parse Success\n" + 
			//	dlg.m_math_input);
			m_sm.changeFormula(list);
			m_plotTitle = dlg.m_math_input;
			UpdateView();
		}
		else
		{
			pView->MessageBox(L"Parse Fail\n" +
				parser.m_errString);
			delete list;
		}
	}
}

bool CGraphiteDoc::validDoc()
{
	return m_sm.isValid();
}