clrpage.cpp

《vc++扩展编程实例》源码。运用Visual C++ 5.0或6.0的高级编程技巧

// ColorPage.cpp : implementation file
//

#include "stdafx.h"
#include "wzd.h"
#include "ClrPage.h"
#include "WzdPrjct.h"
#include "MainFrm.h"

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

/////////////////////////////////////////////////////////////////////////////
// CColorPage property page

IMPLEMENT_DYNCREATE(CColorPage, CPropertyPage)

CColorPage::CColorPage() : CPropertyPage(CColorPage::IDD)
{
	//{{AFX_DATA_INIT(CColorPage)
	//}}AFX_DATA_INIT
}

CColorPage::~CColorPage()
{
}

void CColorPage::DoDataExchange(CDataExchange* pDX)
{
	CPropertyPage::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CColorPage)
	DDX_Control(pDX, IDC_COLOR1_DISPLAY, m_ctrlColor1Display);
	DDX_Control(pDX, IDC_COLOR2_DISPLAY, m_ctrlColor2Display);
	DDX_Control(pDX, IDC_BLUE_SLIDER1, m_ctrlBlueSlider1);
	DDX_Control(pDX, IDC_GRN_SLIDER1, m_ctrlGrnSlider1);
	DDX_Control(pDX, IDC_RED_SLIDER1, m_ctrlRedSlider1);
	DDX_Control(pDX, IDC_BLUE_SLIDER2, m_ctrlBlueSlider2);
	DDX_Control(pDX, IDC_GRN_SLIDER2, m_ctrlGrnSlider2);
	DDX_Control(pDX, IDC_RED_SLIDER2, m_ctrlRedSlider2);
	//}}AFX_DATA_MAP
}


BEGIN_MESSAGE_MAP(CColorPage, CPropertyPage)
	//{{AFX_MSG_MAP(CColorPage)
	ON_WM_VSCROLL()
	ON_WM_PAINT()
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CColorPage message handlers

BOOL CColorPage::OnInitDialog() 
{
	CPropertyPage::OnInitDialog();

	// setup slider bars
	m_ctrlBlueSlider1.SetTicFreq(15);
	m_ctrlBlueSlider1.SetRange(0,255,TRUE);
	m_ctrlBlueSlider1.SetPos(255-GetBValue(m_rgbColors[COLOR1_COLOR]));
	m_ctrlGrnSlider1.SetTicFreq(15);
	m_ctrlGrnSlider1.SetRange(0,255,TRUE);
	m_ctrlGrnSlider1.SetPos(255-GetGValue(m_rgbColors[COLOR1_COLOR]));
	m_ctrlRedSlider1.SetTicFreq(15);
	m_ctrlRedSlider1.SetRange(0,255,TRUE);
	m_ctrlRedSlider1.SetPos(255-GetRValue(m_rgbColors[COLOR1_COLOR]));
	m_ctrlBlueSlider2.SetTicFreq(15);
	m_ctrlBlueSlider2.SetRange(0,255,TRUE);
	m_ctrlBlueSlider2.SetPos(255-GetBValue(m_rgbColors[COLOR2_COLOR]));
	m_ctrlGrnSlider2.SetTicFreq(15);
	m_ctrlGrnSlider2.SetRange(0,255,TRUE);
	m_ctrlGrnSlider2.SetPos(255-GetGValue(m_rgbColors[COLOR2_COLOR]));
	m_ctrlRedSlider2.SetTicFreq(15);
	m_ctrlRedSlider2.SetRange(0,255,TRUE);
	m_ctrlRedSlider2.SetPos(255-GetRValue(m_rgbColors[COLOR2_COLOR]));

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

void CColorPage::OnPaint() 
{
	CPaintDC dc(this); // device context for painting
	
	DrawColorRects();
}

void CColorPage::OnVScroll(UINT nSBCode, UINT nPos, CScrollBar* pScrollBar) 
{
	int i;
	int color=0;
	UINT id = pScrollBar->GetDlgCtrlID();
	switch (nSBCode)
	{
		case SB_TOP:
			color=255;
			break;
		case SB_BOTTOM:
			color=0;
			break;
		case SB_LINEDOWN:
		case SB_LINEUP:
		case SB_PAGEDOWN:
		case SB_PAGEUP:
			switch (id)
			{
				case IDC_RED_SLIDER1:
					color=m_ctrlRedSlider1.GetPos();
					break;
				case IDC_BLUE_SLIDER1:
					color=m_ctrlBlueSlider1.GetPos();
					break;
				case IDC_GRN_SLIDER1:
					color=m_ctrlGrnSlider1.GetPos();
					break;
				case IDC_RED_SLIDER2:
					color=m_ctrlRedSlider2.GetPos();
					break;
				case IDC_BLUE_SLIDER2:
					color=m_ctrlBlueSlider2.GetPos();
					break;
				case IDC_GRN_SLIDER2:
					color=m_ctrlGrnSlider2.GetPos();
					break;
			}
			break;
		case SB_THUMBPOSITION:
		case SB_THUMBTRACK:
			color=nPos;
			break;
		case SB_ENDSCROLL:
			break;
	}

	if (nSBCode!=SB_ENDSCROLL)
	{
		color=255-color;

		switch (id)
		{
			case IDC_RED_SLIDER1:
			case IDC_RED_SLIDER2:
				i=COLOR1_COLOR;
				if (id==IDC_RED_SLIDER2) i=COLOR2_COLOR;
				m_rgbColors[i]=RGB(color,GetGValue(m_rgbColors[i]),GetBValue(m_rgbColors[i]));
				break;
			case IDC_BLUE_SLIDER1:
			case IDC_BLUE_SLIDER2:
				i=COLOR1_COLOR;
				if (id==IDC_BLUE_SLIDER2) i=COLOR2_COLOR;
				m_rgbColors[i]=RGB(GetRValue(m_rgbColors[i]),GetGValue(m_rgbColors[i]),color);
				break;
			case IDC_GRN_SLIDER1:
			case IDC_GRN_SLIDER2:
				i=COLOR1_COLOR;
				if (id==IDC_GRN_SLIDER2) i=COLOR2_COLOR;
				m_rgbColors[i]=RGB(GetRValue(m_rgbColors[i]),color,GetBValue(m_rgbColors[i]));
				break;
		}

		// select palette into a device context
		// (NOTE: you MUST select a palette into a device context for AnimatePalette() to work!)
		CDC *pDC=GetDC();
		CMainFrame *pFrame=(CMainFrame *)AfxGetMainWnd();
		CPalette *pPalette=pFrame->GetPalette();
		CPalette *pOPalette=pDC->SelectPalette(pPalette,FALSE);

		// add new color to palette using animation
		PALETTEENTRY  pentry;
		pentry.peRed=GetRValue(m_rgbColors[i]);
		pentry.peGreen=GetGValue(m_rgbColors[i]);
		pentry.peBlue=GetBValue(m_rgbColors[i]);
		pentry.peFlags=PC_RESERVED; 
		pPalette->AnimatePalette(i,1,&pentry);

		// reselect old palette
		pDC->SelectPalette(pOPalette,FALSE);

		// change color in CMainFrame
		pFrame->SetColorRef(i,m_rgbColors[i]);
	}
	CPropertyPage::OnVScroll(nSBCode, nPos, pScrollBar);
}

void CColorPage::DrawColorRects()
{
	// create a solid brush using our palette
	CDC *pDC=GetDC();
	CMainFrame *pFrame=(CMainFrame *)AfxGetMainWnd();
	CPalette *pPalette=pFrame->GetPalette();
	CPalette *pOPalette=pDC->SelectPalette(pPalette,FALSE);
	CBrush brush1(PALETTEINDEX(COLOR1_COLOR));
	CBrush brush2(PALETTEINDEX(COLOR2_COLOR));

	// draw the rectangle
	CRect rect;
	m_ctrlColor1Display.GetWindowRect(&rect);
	ScreenToClient(&rect);
	rect.DeflateRect(2,2,2,2);
	CBrush *pOBrush=pDC->SelectObject(&brush1);
	pDC->Rectangle(&rect);

	m_ctrlColor2Display.GetWindowRect(&rect);
	ScreenToClient(&rect);
	rect.DeflateRect(2,2,2,2);
	pDC->SelectObject(&brush2);
	pDC->Rectangle(&rect);

	// unselect everything
	pDC->SelectObject(pOBrush);
	pDC->SelectPalette(pOPalette,FALSE);
	ReleaseDC(pDC);
}