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XColorHexagonCtrl - a non-MFC color picker control that displays a color hexagon

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4 Apr 2008CPOL10 min read 70K   1.2K   32  
XColorHexagonCtrl displays a color hexagon that allows user selection, and provides APIs for color based on RGB and HSL color models.
 
// XColorHexagonCtrlTestDlg.cpp : implementation file
//

#include "stdafx.h"
#include "XColorHexagonCtrlTest.h"
#include "XColorHexagonCtrlTestDlg.h"
#include "about.h"
#include "XNamedColors.h"

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

#pragma warning(disable : 4996)	// disable bogus deprecation warning

// copied from XColorHexagonCtrlConstants.h
static const COLORREF g_crCellColors[] = 
{
	RGB(  0,  51, 102),	// 1
	RGB( 51, 102, 153),
	RGB( 51, 102, 204),
	RGB(  0,  51, 153),
	RGB(  0,   0, 153),
	RGB(  0,   0, 204),
	RGB(  0,   0, 102),

	RGB(  0, 102, 102),	// 2
	RGB(  0, 102, 153),
	RGB(  0, 153, 204),
	RGB(  0, 102, 204),
	RGB(  0,  51, 204),
	RGB(  0,   0, 255),
	RGB( 51,  51, 255),
	RGB( 51,  51, 153),

	RGB(  0, 128, 128),	// 3
	RGB(  0, 153, 153),
	RGB( 51, 204, 204),
	RGB(  0, 204, 255),
	RGB(  0, 153, 255),
	RGB(  0, 102, 255),
	RGB( 51, 102, 255),
	RGB( 51,  51, 204),
	RGB(102, 102, 153),

	RGB( 51, 153, 102),	// 4
	RGB(  0, 204, 153),
	RGB(  0, 255, 204),
	RGB(  0, 255, 255),
	RGB( 51, 204, 255),
	RGB( 51, 153, 255),
	RGB(102, 153, 255),
	RGB(102, 102, 255),
	RGB(102,   0, 255),
	RGB(102,   0, 204),

	RGB( 51, 153,  51),	// 5
	RGB(  0, 204, 102),
	RGB(  0, 255, 153),
	RGB(102, 255, 204),
	RGB(102, 255, 255),
	RGB(102, 204, 255),
	RGB(153, 204, 255),
	RGB(153, 153, 255),
	RGB(153, 102, 255),
	RGB(153,  51, 255),
	RGB(153,   0, 255),

	RGB(  0, 102,   0),	// 6
	RGB(  0, 204,   0),
	RGB(  0, 255,   0),
	RGB(102, 255, 153),
	RGB(153, 255, 204),
	RGB(204, 255, 255),
	RGB(204, 236, 255),
	RGB(204, 204, 255),
	RGB(204, 153, 255),
	RGB(204, 102, 255),
	RGB(204,   0, 255),
	RGB(153,   0, 204),

	RGB(  0,  51,   0),	// 7
	RGB(  0, 128,   0),
	RGB( 51, 204,  51),
	RGB(102, 255, 102),
	RGB(153, 255, 153),
	RGB(204, 255, 204),
	RGB(255, 255, 255),
	RGB(255, 204, 255),
	RGB(255, 153, 255),
	RGB(255, 102, 255),
	RGB(255,   0, 255),
	RGB(204,   0, 204),
	RGB(102,   0, 102),

	RGB( 51, 102,   0),	// 8
	RGB(  0, 153,   0),
	RGB(102, 255,  51),
	RGB(153, 255, 102),
	RGB(204, 255, 153),
	RGB(255, 255, 204),
	RGB(255, 204, 204),
	RGB(255, 153, 204),
	RGB(255, 102, 204),
	RGB(255,  51, 204),
	RGB(204,   0, 153),
	RGB(128,   0, 128),

	RGB( 51,  51,   0),	// 9
	RGB(102, 153,   0),
	RGB(153, 255,  51),
	RGB(204, 255, 102),
	RGB(255, 255, 153),
	RGB(255, 204, 153),
	RGB(255, 153, 153),
	RGB(255, 102, 153),
	RGB(255,  51, 153),
	RGB(204,  51, 153),
	RGB(153,   0, 153),

	RGB(102, 102,  51),	// 10
	RGB(153, 204,   0),
	RGB(204, 255,  51),
	RGB(255, 255, 102),
	RGB(255, 204, 102),
	RGB(255, 153, 102),
	RGB(255, 124, 128),
	RGB(255,   0, 102),
	RGB(214,   0, 147),
	RGB(153,  51, 102),

	RGB(128, 128,   0),	// 11
	RGB(204, 204,   0),
	RGB(255, 255,   0),
	RGB(255, 204,   0),
	RGB(255, 153,  51),
	RGB(255, 102,   0),
	RGB(255,  80,  80),
	RGB(204,   0, 102),
	RGB(102,   0,  51),

	RGB(153, 102,  51),	// 12
	RGB(204, 153,   0),
	RGB(255, 153,   0),
	RGB(204, 102,   0),
	RGB(255,  51,   0),
	RGB(255,   0,   0),
	RGB(204,   0,   0),
	RGB(153,   0,  51),

	RGB(102,  51,   0),	// 13
	RGB(153, 102,   0),
	RGB(204,  51,   0),
	RGB(153,  51,   0),
	RGB(153,   0,   0),
	RGB(128,   0,   0),
	RGB(165,   0,  33),

	// gray scale
	RGB(248, 248, 248),	// 1
	RGB(221, 221, 221),
	RGB(178, 178, 178),
	RGB(128, 128, 128),
	RGB( 95,  95,  95),
	RGB( 51,  51,  51),
	RGB( 28,  28,  28),
	RGB(  8,   8,   8),

	RGB(234, 234, 234),	// 2
	RGB(192, 192, 192),
	RGB(150, 150, 150),
	RGB(119, 119, 119),
	RGB( 77,  77,  77),
	RGB( 41,  41,  41),
	RGB( 17,  17,  17),

	RGB(  0,   0,   0)
};

static const int g_nColors = sizeof(g_crCellColors) / sizeof(g_crCellColors[0]);


/////////////////////////////////////////////////////////////////////////////
// CXColorHexagonCtrlTestDlg dialog

BEGIN_MESSAGE_MAP(CXColorHexagonCtrlTestDlg, CDialog)
	//{{AFX_MSG_MAP(CXColorHexagonCtrlTestDlg)
	ON_WM_SYSCOMMAND()
	ON_WM_PAINT()
	ON_WM_QUERYDRAGICON()
	ON_WM_TIMER()
	ON_BN_CLICKED(IDC_STOP, OnStop)
	ON_BN_CLICKED(IDC_SPEED1, OnSpeed)
	ON_BN_CLICKED(IDC_ONLINE_HELP, OnOnlineHelp)
	ON_BN_CLICKED(IDC_TOOLTIP1, OnTooltip)
	ON_BN_CLICKED(IDC_BUTTON1, OnButton1)
	ON_BN_CLICKED(IDC_SPEED2, OnSpeed)
	ON_BN_CLICKED(IDC_SPEED3, OnSpeed)
	ON_BN_CLICKED(IDC_SPEED4, OnSpeed)
	ON_BN_CLICKED(IDC_TOOLTIP2, OnTooltip)
	ON_BN_CLICKED(IDC_TOOLTIP3, OnTooltip)
	ON_BN_CLICKED(IDC_TOOLTIP4, OnTooltip)
	ON_BN_CLICKED(IDC_TOOLTIP5, OnTooltip)
	ON_BN_CLICKED(IDC_TYPE1, OnType)
	ON_BN_CLICKED(IDC_TYPE2, OnType)
	//}}AFX_MSG_MAP
	ON_REGISTERED_MESSAGE(WM_XCOLORPICKER_SELCHANGE2, OnSelChange)
	ON_REGISTERED_MESSAGE(WM_XCOLORPICKER_SELENDOK2, OnSelendOk)
END_MESSAGE_MAP()

CXColorHexagonCtrlTestDlg::CXColorHexagonCtrlTestDlg(CWnd* pParent /*=NULL*/)
	: CDialog(CXColorHexagonCtrlTestDlg::IDD, pParent)
{
	//{{AFX_DATA_INIT(CXColorHexagonCtrlTestDlg)
	m_nSpeed = 0;
	m_nTooltipFormat = 0;
	m_nType = 0;
	//}}AFX_DATA_INIT
	// Note that LoadIcon does not require a subsequent DestroyIcon in Win32
	m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);
	TRACE(_T("g_nColors=%d\n"), g_nColors);
}

void CXColorHexagonCtrlTestDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CXColorHexagonCtrlTestDlg)
	DDX_Radio(pDX, IDC_SPEED1, m_nSpeed);
	DDX_Radio(pDX, IDC_TOOLTIP1, m_nTooltipFormat);
	DDX_Radio(pDX, IDC_TYPE1, m_nType);
	//}}AFX_DATA_MAP
}

/////////////////////////////////////////////////////////////////////////////
// CXColorHexagonCtrlTestDlg message handlers

BOOL CXColorHexagonCtrlTestDlg::OnInitDialog()
{
	CDialog::OnInitDialog();

	// Add "About..." menu item to system menu.

	// IDM_ABOUTBOX must be in the system command range.
	ASSERT((IDM_ABOUTBOX & 0xFFF0) == IDM_ABOUTBOX);
	ASSERT(IDM_ABOUTBOX < 0xF000);

	CMenu* pSysMenu = GetSystemMenu(FALSE);
	if (pSysMenu != NULL)
	{
		CString strAboutMenu;
		strAboutMenu.LoadString(IDS_ABOUTBOX);
		if (!strAboutMenu.IsEmpty())
		{
			pSysMenu->AppendMenu(MF_SEPARATOR);
			pSysMenu->AppendMenu(MF_STRING, IDM_ABOUTBOX, strAboutMenu);
		}
	}

	// Set the icon for this dialog.  The framework does this automatically
	//  when the application's main window is not a dialog
	SetIcon(m_hIcon, TRUE);			// Set big icon
	SetIcon(m_hIcon, FALSE);		// Set small icon

	GetDlgItem(IDC_COLOR_NAME)->SetWindowText(_T(""));
	GetDlgItem(IDC_COLOR_RGB)->SetWindowText(_T(""));

	CRect rect;
	GetDlgItem(IDC_FRAME)->GetWindowRect(&rect);
	ScreenToClient(&rect);
	GetDlgItem(IDC_FRAME)->ShowWindow(SW_HIDE);
	VERIFY(m_ColorHexagon.Create(AfxGetInstanceHandle(), WS_CHILD | WS_VISIBLE | WS_TABSTOP /*| WS_BORDER*/, 
		rect, m_hWnd, 9001, RGB(0,255,0)));//, CXColorHexagonCtrl::XCOLOR_TOOLTIP_HTML));

	// call SetWindowPos to insert control in proper place in tab order
	::SetWindowPos(m_ColorHexagon.m_hWnd, ::GetDlgItem(m_hWnd, IDC_FRAME), 
		0,0,0,0, SWP_NOMOVE|SWP_NOSIZE);

	m_ColorHexagon.SetBackground(GetSysColor(COLOR_BTNFACE));//RGB(255,255,0));	// yellow background

	//CRect rect2;
	//GetDlgItem(IDC_FRAME2)->GetWindowRect(&rect2);
	//ScreenToClient(&rect2);
	//GetDlgItem(IDC_FRAME2)->ShowWindow(SW_HIDE);
	//VERIFY(m_ColorSpectrum2.Create(AfxGetInstanceHandle(), WS_CHILD | WS_VISIBLE | WS_TABSTOP /*| WS_BORDER*/, 
	//	rect2, m_hWnd, 9002, RGB(0,255,0)));//, CXColorSpectrumCtrl::XCOLOR_TOOLTIP_HTML));

	srand((unsigned)time(NULL));
	SetTimer(1, 2000, NULL);
	
	::SetFocus(m_ColorHexagon.m_hWnd);

	return FALSE;  // return TRUE  unless you set the focus to a control
}

void CXColorHexagonCtrlTestDlg::OnSysCommand(UINT nID, LPARAM lParam)
{
	if ((nID & 0xFFF0) == IDM_ABOUTBOX)
	{
		CAboutDlg dlgAbout;
		dlgAbout.DoModal();
	}
	else
	{
		CDialog::OnSysCommand(nID, lParam);
	}
}

void CXColorHexagonCtrlTestDlg::OnPaint() 
{
	if (IsIconic())
	{
		CPaintDC dc(this); // device context for painting

		SendMessage(WM_ICONERASEBKGND, (WPARAM) dc.GetSafeHdc(), 0);

		// Center icon in client rectangle
		int cxIcon = GetSystemMetrics(SM_CXICON);
		int cyIcon = GetSystemMetrics(SM_CYICON);
		CRect rect;
		GetClientRect(&rect);
		int x = (rect.Width() - cxIcon + 1) / 2;
		int y = (rect.Height() - cyIcon + 1) / 2;

		// Draw the icon
		dc.DrawIcon(x, y, m_hIcon);
	}
	else
	{
		CDialog::OnPaint();
	}
}

HCURSOR CXColorHexagonCtrlTestDlg::OnQueryDragIcon()
{
	return (HCURSOR) m_hIcon;
}

// handler for WM_XCOLORPICKER_SELCHANGE
LRESULT CXColorHexagonCtrlTestDlg::OnSelChange(WPARAM wParam, LPARAM lParam)
{
	//TRACE(_T("CXColorHexagonCtrlTestDlg::OnSelChange: color=0x%06X  id=%d\n"), wParam, lParam);

	KillTimer(1);		// stop animation
	CString s = _T("");
	GetDlgItem(IDC_COLOR_NAME)->SetWindowText(s);
	GetDlgItem(IDC_COLOR_RGB)->SetWindowText(s);

	s.Format(_T("WM_XCOLORPICKER_SELCHANGE       RGB(%d,%d,%d)"), 
		GetRValue(wParam), GetGValue(wParam), GetBValue(wParam));

	if (lParam == 9001)
		GetDlgItem(IDC_SELECTION)->SetWindowText(s);
	//else
	//	GetDlgItem(IDC_SELECTION2)->SetWindowText(s);

	return 0;
}

// handler for WM_XCOLORPICKER_SELENDOK
LRESULT CXColorHexagonCtrlTestDlg::OnSelendOk(WPARAM wParam, LPARAM lParam)
{
	TRACE(_T("CXColorHexagonCtrlTestDlg::OnSelendOk:  color=0x%06X  id=%d\n"), wParam, lParam);

	KillTimer(1);		// stop animation
	CString s = _T("");
	GetDlgItem(IDC_COLOR_NAME)->SetWindowText(s);
	GetDlgItem(IDC_COLOR_RGB)->SetWindowText(s);

	s.Format(_T("WM_XCOLORPICKER_SELENDOK       RGB(%d,%d,%d)"), 
		GetRValue(wParam), GetGValue(wParam), GetBValue(wParam));

	if (lParam == 9001)
		GetDlgItem(IDC_SELECTION)->SetWindowText(s);
	//else
	//	GetDlgItem(IDC_SELECTION2)->SetWindowText(s);

	return 0;
}

void CXColorHexagonCtrlTestDlg::OnTimer(UINT nIDEvent) 
{
	static int index = 0;

	if (m_nType == 0)
		while ((index = rand()) >= g_nColors) index = rand();

	TCHAR s[200] = { _T('\0') };

	COLORREF cr = g_crCellColors[index++]; 
	_stprintf(s, _T("%d,%d,%d"), GetRValue(cr), GetGValue(cr), GetBValue(cr));
	GetDlgItem(IDC_COLOR_RGB)->SetWindowText(s);

	CXNamedColors nc;
	nc.SetRGB(cr);
	nc.GetName(s, sizeof(s)/sizeof(TCHAR)-2);
	GetDlgItem(IDC_COLOR_NAME)->SetWindowText(s);
	if (s[0] != _T('\0'))
	{
		TRACE(_T("named color: %s\n"), s);
	}

	m_ColorHexagon.SetRGB(cr);

	if (index >= g_nColors)
		index = 0;

	CDialog::OnTimer(nIDEvent);
}

void CXColorHexagonCtrlTestDlg::OnStop() 
{
	KillTimer(1);	
}

void CXColorHexagonCtrlTestDlg::OnSpeed() 
{
	int ms[4] = { 3000, 1000, 500, 100 };
	UpdateData(TRUE);
	if (m_nSpeed < 0 || m_nSpeed > 3)
		m_nSpeed = 0;
	SetTimer(1, ms[m_nSpeed], NULL);
}

void CXColorHexagonCtrlTestDlg::OnOnlineHelp() 
{
	CString strHelp = _T("");
	VERIFY(strHelp.LoadString(IDS_ONLINE_HELP));
	CXHyperLink::GotoURL(strHelp, SW_SHOW, TRUE);	
}

void CXColorHexagonCtrlTestDlg::OnTooltip() 
{
	UpdateData(TRUE);
	m_ColorHexagon.SetTooltipFormat((CXColorHexagonCtrl::TOOLTIP_FORMAT) m_nTooltipFormat);
	//m_ColorHexagon2.SetTooltipFormat((CXColorHexagonCtrl::TOOLTIP_FORMAT) m_nTooltipFormat);
}

// following was implemented to assist in screenshots
void CXColorHexagonCtrlTestDlg::OnButton1() 
{
#if 0  // -----------------------------------------------------------
	KillTimer(1);
	m_ColorSpectrum.SetRGB(RGB(0,0,0));
	CPoint pt(20,25);
	::ClientToScreen(m_ColorSpectrum.m_hWnd, &pt);
	::SetCursorPos(pt.x, pt.y);
#endif // -----------------------------------------------------------
}

void CXColorHexagonCtrlTestDlg::OnType() 
{
	UpdateData(TRUE);	
}

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License

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Written By
Hans Dietrich
Software Developer (Senior) Hans Dietrich Software
United States United States
I attended St. Michael's College of the University of Toronto, with the intention of becoming a priest. A friend in the University's Computer Science Department got me interested in programming, and I have been hooked ever since.

Recently, I have moved to Los Angeles where I am doing consulting and development work.

For consulting and custom software development, please see www.hdsoft.org.






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Posted 15 Mar 2008

Article Copyright 2008 by Hans Dietrich
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