dockpagebar.cpp

模拟msdn界面的程序

/////////////////////////////////////////////////////////////////////////
//
// CDockPageBar            Version 1.2
//
// Created: Mar 16, 2004
//
/////////////////////////////////////////////////////////////////////////
// Copyright (C) 2004 by Cuick. All rights reserved.
//
// This code is free for personal and commercial use, providing this 
// notice remains intact in the source files and all eventual changes are
// clearly marked with comments.
//
// Send bug reports, bug fixes, enhancements, requests, flames, etc. to
// [e-mail]
//
// Hint: These classes are intended to be used as base classes. Do not
// simply add your code to these file - instead create a new class
// derived from CDockPageBar classes and put there what you need. See 
// CTestBar classes in the demo projects for examples.
// Modify this file only to fix bugs, and don't forget to send me a copy.
/////////////////////////////////////////////////////////////////////////
// Acknowledgements:
//	o	感谢Cristi Posea的CSizingControlBar
//	o	借鉴了王骏的《轻松实现类VC界面》中的部分代码，在这里表示感谢。
//  o   感谢hengai帮助修改了部分内存泄漏问题
//	o	开发过程中遇到的问题得到了VC知识库论坛中很多人的帮助，这里一并感谢。
//


// DockPageBar.cpp : implementation file
//
#include "stdafx.h"
#include "DockPageBar.h"

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

/////////////////////////////////////////////////////////////////////////
// delete the line between menu bar and tool bar

// From <afximpl.h>
struct AUX_DATA
{
	int _unused1, _unused2;
	int _unused3, _unused4;
	int cxBorder2, cyBorder2;
};

extern __declspec(dllimport) AUX_DATA afxData;

class INIT_afxData
{
public:
    INIT_afxData ()
    {
        afxData.cxBorder2 = afxData.cyBorder2 = 0;
    }
} g_afxData2;

/////////////////////////////////////////////////////////////////////////
// CMyButton

CMyButton::CMyButton()
{
    bRaised = FALSE;
    bPushed = FALSE;
}

void CMyButton::Paint(CDC* pDC, BOOL isActive)
{
    CRect rc = GetRect();

    if (bPushed)
        pDC->Draw3dRect(rc, ::GetSysColor(COLOR_BTNSHADOW),
            ::GetSysColor(COLOR_BTNHIGHLIGHT));
    else
        if (bRaised)
            pDC->Draw3dRect(rc, ::GetSysColor(COLOR_BTNHIGHLIGHT),
                ::GetSysColor(COLOR_BTNSHADOW));
}

// draw close button
void CCloseButton::Paint(CDC* pDC, BOOL isActive)
{
	CMyButton::Paint(pDC, isActive);

	COLORREF clrOldTextColor = pDC->GetTextColor();

	if(TRUE == isActive)
		pDC->SetTextColor(RGB(255,255,255));
	else
		pDC->SetTextColor(RGB(128,128,128));

    int nPrevBkMode = pDC->SetBkMode(TRANSPARENT);
    CFont font;
    int ppi = pDC->GetDeviceCaps(LOGPIXELSX);
    int pointsize = MulDiv(75, 96, ppi); // 6 points at 96 ppi
    font.CreatePointFont(pointsize, _T("Marlett"));
    CFont* oldfont = pDC->SelectObject(&font);

    pDC->TextOut(ptOrg.x + 2, ptOrg.y + 2, CString(_T("r"))); // x-like

    pDC->SelectObject(oldfont);
    pDC->SetBkMode(nPrevBkMode);
    pDC->SetTextColor(clrOldTextColor);
}

CStudButton::CStudButton()
{
}

// draw stud
void CStudButton::Paint(CDC* pDC, BOOL isActive)
{
	CMyButton::Paint(pDC, isActive);

	HPEN oldPen;
	CPen pen;
	if(TRUE == isActive)
		pen.CreatePen (PS_SOLID, 1, RGB(255,255,255));
	else
		pen.CreatePen (PS_SOLID, 1, RGB(0,0,0));

	oldPen = (HPEN)pDC->SelectObject (pen);

	if(FALSE == bFloat)
	{
		pDC->MoveTo (ptOrg.x + 4, ptOrg.y + 8);
		pDC->LineTo (ptOrg.x + 4, ptOrg.y + 3);
		pDC->LineTo (ptOrg.x + 8, ptOrg.y + 3);
		pDC->LineTo (ptOrg.x + 8, ptOrg.y + 8);
		
		pDC->MoveTo (ptOrg.x + 7, ptOrg.y + 3);
		pDC->LineTo (ptOrg.x + 7, ptOrg.y + 8);
		
		pDC->MoveTo (ptOrg.x + 2, ptOrg.y + 8);
		pDC->LineTo (ptOrg.x + 11, ptOrg.y + 8);
		
		pDC->MoveTo (ptOrg.x + 6, ptOrg.y + 8);
		pDC->LineTo (ptOrg.x + 6, ptOrg.y + 12);
	}
	else
	{
		pDC->MoveTo (ptOrg.x + 5, ptOrg.y + 4);
		pDC->LineTo (ptOrg.x + 10, ptOrg.y + 4);
		pDC->LineTo (ptOrg.x + 10, ptOrg.y + 8);
		pDC->LineTo (ptOrg.x + 5, ptOrg.y + 8);
		
		pDC->MoveTo (ptOrg.x + 5, ptOrg.y + 7);
		pDC->LineTo (ptOrg.x + 10, ptOrg.y + 7);
		
		pDC->MoveTo (ptOrg.x + 5, ptOrg.y + 2);
		pDC->LineTo (ptOrg.x + 5, ptOrg.y + 11);
		
		pDC->MoveTo (ptOrg.x + 1, ptOrg.y + 6);
		pDC->LineTo (ptOrg.x + 5, ptOrg.y + 6);
	}

	pDC->SelectObject(oldPen);
}

/////////////////////////////////////////////////////////////////////////////
// CPageItem 
#define	ITEMBUTTON_HEIGHT		27

void CPageItem::Draw(CDC *pDC, BOOL bActive)
{
	CRect rect = m_rect;
	COLORREF crOldText;

	rect.top += 2;
	if(bActive)
	{
		rect.bottom -= 2;
		
		CBrush brush(GetSysColor(COLOR_3DFACE));
		pDC->FillRect(rect,&brush);

		CPen pen(PS_SOLID,1,GetSysColor(COLOR_3DDKSHADOW));
		HPEN oldPen = (HPEN)pDC->SelectObject (&pen);
		pDC->MoveTo (rect.left , rect.bottom );
		pDC->LineTo (rect.right+1 ,rect.bottom );

		pDC->MoveTo (rect.right, rect.top);
		pDC->LineTo (rect.right ,rect.bottom+1 );

		pDC->SelectObject (oldPen);

		crOldText = pDC->SetTextColor(RGB(0,0,0));
		m_pWnd->ShowWindow(SW_SHOW);
	}
	else
	{
		CPen pen(PS_SOLID, 1, RGB(128,128,128));
		HPEN oldPen = (HPEN)pDC->SelectObject (&pen);

		pDC->MoveTo (rect.right+1, rect.top + 3);
		pDC->LineTo (rect.right+1, rect.bottom -4);

		pDC->SelectObject (oldPen);

		crOldText = pDC->SetTextColor(RGB(128,128,128));
		m_pWnd->ShowWindow(SW_HIDE);
	}

	rect.left += 5;
	rect.right -= 2;
	rect.top +=1;
	
	// draw Icon
	if(rect.Width() > 16 && m_hIcon != NULL)
	{
		::DrawIconEx(pDC->m_hDC,rect.left,rect.top + 3,m_hIcon,16,16,0,NULL,DI_NORMAL);
		rect.left += 22;
	}
	if (!m_sText.IsEmpty())
	{
		// draw text
		rect.top += 2;
		CString sText = m_sText;
		int l = sText.GetLength();
		int i;

		for(i=0;i<10 && pDC->GetTextExtent(sText).cx > rect.Width();i++,l-=2)
			sText = sText.Left(l-2);
		if(i > 0)
		{
			sText = sText.Left(l-2);
			sText += "...";
		}
		int nPrevBkMode = pDC->SetBkMode(TRANSPARENT);
		
		pDC->DrawText(sText, &rect, DT_LEFT | DT_VCENTER | DT_SINGLELINE);
		pDC->SetBkMode(nPrevBkMode);
	}

	pDC->SetTextColor (crOldText);
}

/////////////////////////////////////////////////////////////////////////////
// CDockPageBar

IMPLEMENT_DYNAMIC(CDockPageBar, baseCDockPageBar);

CDockPageBar::CDockPageBar()
{
	m_szMinHorz = CSize(50, 50);
    m_szMinVert = CSize(60, 60);
    m_szMinFloat = CSize(150, 150);

	m_cyGripper = 20;
	m_isActive = FALSE;
	m_Title = "";
	m_nActivePage = -1;
	m_stud.bFloat = FALSE;
}

CDockPageBar::~CDockPageBar()
{
	for(POSITION pos = m_PageList.GetHeadPosition(); pos;)
	{
		CPageItem* pItem=(CPageItem*)m_PageList.GetNext(pos);
		CWnd *pWnd = pItem->m_pWnd;
		ASSERT(pWnd);
		//hengai	因为在这个例子中，加入了 Edit, TREE 之类的，并且实在 MainFrm 中 CEdit m_wndEdit 声明的，会自动
		//消除，所以在这里判断一下。如果使用 CEdit *m_wndEdit，然后在 CMainFrame::OnCreate 使用 m_wndEdit = new CEdit
		//的，则必须在 MainFrm 析构函数中自己删除，因为加入了 IsKindOf 判断，并不会在这里析构
		if(pWnd->IsKindOf(RUNTIME_CLASS(CDialog)))
		{
			delete pWnd; pWnd = NULL;
		}
		delete pItem; pItem=NULL;
	}
	m_PageList.RemoveAll();
	for(pos = m_pDPBContext.GetHeadPosition(); pos;)
	{
		CDockPageBarContext* pDPBContext = (CDockPageBarContext*)m_pDPBContext.GetNext(pos);
		if(pDPBContext)
		{
			pDPBContext->FreeAll();
		}
	}
	m_pDPBContext.RemoveAll();
}


BEGIN_MESSAGE_MAP(CDockPageBar, baseCDockPageBar)
	//{{AFX_MSG_MAP(CDockPageBar)
	ON_WM_CREATE()
	ON_WM_NCHITTEST()
	ON_WM_NCLBUTTONUP()
	ON_WM_SIZE()
	ON_WM_PAINT()
	ON_WM_LBUTTONDOWN()
	ON_WM_DESTROY()
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()


/////////////////////////////////////////////////////////////////////////////
// CDockPageBar message handlers

int CDockPageBar::OnCreate(LPCREATESTRUCT lpCreateStruct) 
{
	if (baseCDockPageBar::OnCreate(lpCreateStruct) == -1)
		return -1;
	
	if (m_font.CreatePointFont(85, "Tahoma"))
			SetFont(&m_font);

	m_isActive = FALSE;

	return 0;
}
void CDockPageBar::OnDestroy()
{
	
}

void CDockPageBar::OnUpdateCmdUI(CFrameWnd *pTarget, BOOL bDisableIfNoHndler)
{
	if (!HasGripper())
        return;

    BOOL bNeedPaint = FALSE;

    CWnd* pFocus = GetFocus();
    BOOL bActiveOld = m_isActive;

    m_isActive = (pFocus->GetSafeHwnd() && IsChild(pFocus));
	m_isActive = m_isActive || (pFocus == this);
    if (m_isActive != bActiveOld)
        bNeedPaint = TRUE;


    CPoint pt;
    ::GetCursorPos(&pt);

	///////////////////////////////////////////////////////////
	// hit close
    BOOL bHit = (OnNcHitTest(pt) == HTCLOSE);
    BOOL bLButtonDown = (::GetKeyState(VK_LBUTTON) < 0);

    BOOL bWasPushed = m_biHide.bPushed;
    m_biHide.bPushed = bHit && bLButtonDown;

    BOOL bWasRaised = m_biHide.bRaised;
    m_biHide.bRaised = bHit && !bLButtonDown;

    bNeedPaint |= (m_biHide.bPushed ^ bWasPushed) ||
                  (m_biHide.bRaised ^ bWasRaised);

	////////////////////////////////////////////////////////////
	// hit stud
	bHit = (OnNcHitTest(pt) == HTSTUD);
	bWasPushed = m_stud.bPushed;
    m_stud.bPushed = bHit && bLButtonDown;

    bWasRaised = m_stud.bRaised;
    m_stud.bRaised = bHit && !bLButtonDown;

	bNeedPaint |= (m_stud.bPushed ^ bWasPushed) ||
                  (m_stud.bRaised ^ bWasRaised);

    if (bNeedPaint)
        SendMessage(WM_NCPAINT);

}

// draw title bar
void CDockPageBar::NcPaintGripper(CDC *pDC, CRect rcClient)
{
    if (!HasGripper())
        return;

    CRect gripper = rcClient;
    CRect rcbtn = m_biHide.GetRect();


    gripper.DeflateRect(1, 1);
	gripper.top -= m_cyGripper;
	gripper.bottom = gripper.top + 16;


	HFONT oldFont = (HFONT)pDC->SelectObject (m_font);

	int nPrevBkMode = pDC->SetBkMode(TRANSPARENT);
	COLORREF crOldText;

	if(TRUE == m_isActive)			// active state
	{
		CBrush brush(RGB(10,36,106));
		pDC->FillRect(&gripper, &brush);

		crOldText = pDC->SetTextColor(RGB(255,255,255));
	}
	else
	{
		CPen pen(PS_SOLID, 1, RGB(128,128,128));
		
		HPEN poldPen = (HPEN)pDC->SelectObject (&pen);
		
		pDC->MoveTo (gripper.TopLeft());
		pDC->LineTo (gripper.right ,gripper.top );
		pDC->LineTo (gripper.BottomRight() );
		pDC->LineTo (gripper.left ,gripper.bottom );
		pDC->LineTo (gripper.TopLeft ());
		pDC->SelectObject (poldPen);

		crOldText = pDC->SetTextColor(RGB(0,0,0));
	}
	
	gripper.left += 4;
	gripper.top += 2;

	// draw caption
	if (!m_Title.IsEmpty())
	{
		CString sText = m_Title;
		int l = sText.GetLength();
		int i;

		for(i=0;i<10 && pDC->GetTextExtent(sText).cx > (gripper.Width() - 30);i++,l-=2)
			sText = sText.Left(l-2);