XCharMap - A dialog to display a character map

// XCharMap.cpp  Version 1.0
//
// Author:  Hans Dietrich
//          hdietrich2@hotmail.com
//
// Description:
//     XCharMap.cpp implements CXCharMap, a class to display a 
//     dialog containing a character grid.
//
// History
//     Version 1.0 - 2003 June 4
//     - Initial public release
//
// This software is released into the public domain.  You are free to use it 
// in any way you like.
//
// This software is provided "as is" with no expressed or implied warranty.  
// I accept no liability for any damage or loss of business that this software 
// may cause.
//
///////////////////////////////////////////////////////////////////////////////

#include "stdafx.h"
#include "XCharMapTest.h"
#include "XCharMap.h"
#include "Clipboard.h"

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

#define LEFT_CLICK_COLOR	RGB(224,255,255)
#define RIGHT_CLICK_COLOR	RGB(255,255,192)

///////////////////////////////////////////////////////////////////////////////
// CXCharMap dialog

BEGIN_MESSAGE_MAP(CXCharMap, CDialog)
	//{{AFX_MSG_MAP(CXCharMap)
	ON_WM_CTLCOLOR()
	ON_BN_CLICKED(IDC_SELECT, OnSelect)
	ON_BN_CLICKED(IDC_COPY, OnCopy)
	ON_CBN_KILLFOCUS(IDC_FONT_NAME, OnSelChange)
	ON_CBN_SELCHANGE(IDC_FONT_NAME, OnSelChange)
	ON_MESSAGE(WM_XCHAR_LEFTCLICK, OnLeftClick)
	ON_MESSAGE(WM_XCHAR_RIGHTCLICK, OnRightClick)
	ON_MESSAGE(WM_XCHAR_SELCHANGE, OnSelChange)
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()


///////////////////////////////////////////////////////////////////////////////
// ctor
CXCharMap::CXCharMap(CWnd* pParent /*=NULL*/)
	: CDialog(CXCharMap::IDD, pParent)
{
	//{{AFX_DATA_INIT(CXCharMap)
	m_strCharsToCopy = _T("");
	//}}AFX_DATA_INIT
	m_pCharGrid = NULL;
	m_bEnableCharsToCopy = TRUE;
	m_bEnableClicks = TRUE;
	m_bEnableCharacterCode = TRUE;
}

///////////////////////////////////////////////////////////////////////////////
// dtor
CXCharMap::~CXCharMap()
{
	if (m_pCharGrid)
		delete m_pCharGrid;
	m_pCharGrid = NULL;
}

///////////////////////////////////////////////////////////////////////////////
// DoDataExchange
void CXCharMap::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CXCharMap)
	DDX_Control(pDX, IDC_FONT_NAME, m_cmbFont);
	DDX_CBString(pDX, IDC_FONT_NAME, m_strFont);
	DDX_Text(pDX, IDC_CHARSTOCOPY, m_strCharsToCopy);
	//}}AFX_DATA_MAP
}

///////////////////////////////////////////////////////////////////////////////
// OnInitDialog
BOOL CXCharMap::OnInitDialog() 
{
	TRACE(_T("in CXCharMap::OnInitDialog\n"));
	CDialog::OnInitDialog();

	m_brLeftClick.CreateSolidBrush(LEFT_CLICK_COLOR);
	m_brRightClick.CreateSolidBrush(RIGHT_CLICK_COLOR);

	m_cmbFont.m_style = CFontPreviewCombo::NAME_THEN_SAMPLE;
	m_cmbFont.Init();

	CRect rect;
	GetDlgItem(IDC_CODEFRAME)->GetWindowRect(&rect);
	ScreenToClient(&rect);
	m_pCharGrid = new CXCharGrid(1, 1, this);
	m_pCharGrid->Create(CPoint(rect.left, rect.top), this, 20);

	m_pCharGrid->SetLeftClick(-1, -1, LEFT_CLICK_COLOR);
	m_pCharGrid->SetRightClick(-1, -1, RIGHT_CLICK_COLOR);

	OnSelChange();

	if (!m_bEnableCharsToCopy)
	{
		// disable Characters to copy windows
		GetDlgItem(IDC_STATIC1)->EnableWindow(FALSE);
		GetDlgItem(IDC_CHARSTOCOPY)->EnableWindow(FALSE);
		GetDlgItem(IDC_SELECT)->EnableWindow(FALSE);
		GetDlgItem(IDC_COPY)->EnableWindow(FALSE);

		// hide Characters to copy windows
		GetDlgItem(IDC_STATIC1)->ShowWindow(SW_HIDE);
		GetDlgItem(IDC_CHARSTOCOPY)->ShowWindow(SW_HIDE);
		GetDlgItem(IDC_SELECT)->ShowWindow(SW_HIDE);
		GetDlgItem(IDC_COPY)->ShowWindow(SW_HIDE);
	}

	if (!m_bEnableClicks)
	{
		// disable Left/Right click windows
		GetDlgItem(IDC_STATIC2)->EnableWindow(FALSE);
		GetDlgItem(IDC_LEFTCLICK)->EnableWindow(FALSE);
		GetDlgItem(IDC_STATIC3)->EnableWindow(FALSE);
		GetDlgItem(IDC_RIGHTCLICK)->EnableWindow(FALSE);

		// hide Left/Right click windows
		GetDlgItem(IDC_STATIC2)->ShowWindow(SW_HIDE);
		GetDlgItem(IDC_LEFTCLICK)->ShowWindow(SW_HIDE);
		GetDlgItem(IDC_STATIC3)->ShowWindow(SW_HIDE);
		GetDlgItem(IDC_RIGHTCLICK)->ShowWindow(SW_HIDE);
	}

	if (!m_bEnableCharsToCopy && !m_bEnableClicks)
	{
		CRect rectSelect;
		GetDlgItem(IDC_SELECT)->GetWindowRect(&rectSelect);
		ScreenToClient(&rectSelect);

		// hide horizontal rule
		GetDlgItem(IDC_STATIC4)->ShowWindow(SW_HIDE);

		// move Cancel button
		CRect rect;
		GetDlgItem(IDCANCEL)->GetWindowRect(&rect);
		ScreenToClient(&rect);
		int nOldTop = rect.top;
		int h = rect.Height();
		int nNewTop = rectSelect.top + 1;
		rect.top = nNewTop;
		rect.bottom = rect.top + h;
		GetDlgItem(IDCANCEL)->MoveWindow(&rect);

		// move OK button
		GetDlgItem(IDOK)->GetWindowRect(&rect);
		ScreenToClient(&rect);
		rect.top = nNewTop;
		rect.bottom = rect.top + h;
		GetDlgItem(IDOK)->MoveWindow(&rect);

		// shrink dialog
		CRect rectDlg;
		GetWindowRect(&rectDlg);
		h = rectDlg.Height();
		rectDlg.bottom = rectDlg.top + h - (nOldTop - nNewTop);
		MoveWindow(&rectDlg);
	}

	return TRUE;  // return TRUE unless you set the focus to a control
	              // EXCEPTION: OCX Property Pages should return FALSE
}

///////////////////////////////////////////////////////////////////////////////
// OnOK
void CXCharMap::OnOK() 
{
	m_nLeftClickRow  = m_pCharGrid->m_nLeftClickRow;
	m_nLeftClickCol  = m_pCharGrid->m_nLeftClickCol;
	m_nRightClickRow = m_pCharGrid->m_nRightClickRow;
	m_nRightClickCol = m_pCharGrid->m_nRightClickCol;

	CDialog::OnOK();
}

///////////////////////////////////////////////////////////////////////////////
// OnSelChange
void CXCharMap::OnSelChange()
{
	// The selection hasn't changed yet, so change it

	if (!::IsWindow(m_cmbFont.m_hWnd))
		return;

	CString sText = _T("");

	int index = m_cmbFont.GetCurSel();
	if (index != CB_ERR)
	{
		m_cmbFont.GetLBText(index, sText);
		m_cmbFont.SetWindowText(sText);
		m_strFont = sText;
	}
	else
	{
		if ((index = m_cmbFont.FindStringExact(0, m_strFont)) != CB_ERR)
		{
			m_cmbFont.SetCurSel(index);
			m_cmbFont.GetLBText(index, sText);
			m_cmbFont.SetWindowText(sText);
		}
		else
		{
			m_strFont = "Courier New";
		}
	}

	if ((index = m_cmbFont.FindStringExact(0, m_strFont)) != CB_ERR)
	{
		m_cmbFont.SetCurSel(index);
		m_cmbFont.SetWindowText(m_strFont);
	}

	UpdateData(TRUE);

	if (m_strFont.IsEmpty())
		m_strFont = "Courier New";

	if (sText.IsEmpty())
		sText = m_strFont;

	LOGFONT logfont;
	memset(&logfont, 0, sizeof(logfont));
	
	logfont.lfStrikeOut = FALSE;
	logfont.lfUnderline = FALSE;
	strncpy(logfont.lfFaceName, m_strFont, LF_FACESIZE);
	logfont.lfHeight = -16;
	logfont.lfWeight = 400;                 //Regular
	logfont.lfItalic = FALSE;

	m_font.DeleteObject();
	m_font.CreateFontIndirect(&logfont);

	CFont* pFont = GetFont();
	pFont->GetLogFont(&logfont);
	strncpy(logfont.lfFaceName, m_strFont, LF_FACESIZE);

	m_pCharGrid->SetFont(&m_font);
	m_pCharGrid->Invalidate(FALSE);
	m_pCharGrid->UpdateWindow();

	GetDlgItem(IDC_LEFTCLICK)->SetFont(&m_font);
	GetDlgItem(IDC_RIGHTCLICK)->SetFont(&m_font);
	GetDlgItem(IDC_CHARSTOCOPY)->SetFont(&m_font);
	
	RedrawWindow(NULL, NULL, RDW_UPDATENOW|RDW_ALLCHILDREN|RDW_ERASE);
}

///////////////////////////////////////////////////////////////////////////////
// OnSelect
void CXCharMap::OnSelect() 
{
	UpdateData(TRUE);

	CString s;
	((CStatic*) GetDlgItem(IDC_LEFTCLICK))->GetWindowText(s);

	if (!s.IsEmpty())
	{
		m_strCharsToCopy += s;
		UpdateData(FALSE);
	}
}

///////////////////////////////////////////////////////////////////////////////
// OnCopy
void CXCharMap::OnCopy() 
{
	UpdateData(TRUE);

	if (!m_strCharsToCopy.IsEmpty())
		CClipboard::SetText(m_strCharsToCopy);
}

///////////////////////////////////////////////////////////////////////////////
// OnCtlColor
HBRUSH CXCharMap::OnCtlColor(CDC* pDC, CWnd* pWnd, UINT nCtlColor) 
{
	HBRUSH hbr = CDialog::OnCtlColor(pDC, pWnd, nCtlColor);
	
	DWORD dwStyle;
	int nCtrlID = pWnd->GetDlgCtrlID();

	switch (nCtlColor) 
	{
		case CTLCOLOR_STATIC:
			dwStyle = ::GetWindowLong(pWnd->m_hWnd, GWL_STYLE);
	
			if (nCtrlID == IDC_LEFTCLICK)
			{
				pDC->SetBkColor(LEFT_CLICK_COLOR);
				hbr = (HBRUSH) m_brLeftClick;
			}

			if (nCtrlID == IDC_RIGHTCLICK)
			{
				pDC->SetBkColor(RIGHT_CLICK_COLOR);
				hbr = m_brRightClick;
			}
			break;
 
		default:
			break;
	}
	return hbr;
}

///////////////////////////////////////////////////////////////////////////////
// OnLeftClick
LONG CXCharMap::OnLeftClick(UINT, LONG lParam)
{
	int nSelectedRow = LOWORD(lParam);
	int nSelectedCol = HIWORD(lParam);
	int nNewChar = nSelectedCol | nSelectedRow << 4;

	char s[10];
	s[0] = (char) nNewChar;
	s[1] = 0;
	((CStatic*) GetDlgItem(IDC_LEFTCLICK))->SetWindowText(s);

	return TRUE;
}

///////////////////////////////////////////////////////////////////////////////
// OnRightClick
LONG CXCharMap::OnRightClick(UINT, LONG lParam)
{
	int nSelectedRow = LOWORD(lParam);
	int nSelectedCol = HIWORD(lParam);
	int nNewChar = nSelectedCol | nSelectedRow << 4;

	char s[10];
	s[0] = (char) nNewChar;
	s[1] = 0;
	((CStatic*) GetDlgItem(IDC_RIGHTCLICK))->SetWindowText(s);

	return TRUE;
}

///////////////////////////////////////////////////////////////////////////////
// OnSelChange
LONG CXCharMap::OnSelChange(UINT, LONG lParam)
{
	int nSelectedRow = LOWORD(lParam);
	int nSelectedCol = HIWORD(lParam);
	int nNewChar = nSelectedCol | nSelectedRow << 4;

	char s[10];
	s[0] = (char) nNewChar;
	s[1] = 0;

	if (m_bEnableCharacterCode)
	{
		CString str1 = _T("");
		str1.Format(_T("Character Map - 0x%02X    \\%03o    Alt+0%03u"), 
			nNewChar, nNewChar, nNewChar);
		SetWindowText(str1);
	}

	return TRUE;
}