// sizecbar.cpp : implementation file
//

#include "stdafx.h"

#include "scbarg.h"

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

int CALLBACK EnumFontFamProc(ENUMLOGFONT FAR *lpelf,
                             NEWTEXTMETRIC FAR *lpntm,
                             int FontType,
                             LPARAM lParam)
{
    UNUSED_ALWAYS(lpelf);
    UNUSED_ALWAYS(lpntm);
    UNUSED_ALWAYS(FontType);
    UNUSED_ALWAYS(lParam);

    return 0;
}

/////////////////////////////////////////////////////////////////////////
// CCoolBar

IMPLEMENT_DYNAMIC(CCoolBar, baseCCoolBar);

CCoolBar::CCoolBar()
{
    m_cyGripper = 12;
	SetSCBStyle(GetSCBStyle() |	SCBS_SIZECHILD);
	    m_bActive = FALSE;
    CDC dc;
    dc.CreateCompatibleDC(NULL);
    m_sFontFace = (::EnumFontFamilies(dc.m_hDC,
        _T("宋體"), (FONTENUMPROC) EnumFontFamProc, 0) == 0) ?
        _T("宋體") : _T("Tahoma");
    dc.DeleteDC();
}

CCoolBar::~CCoolBar()
{
}

BEGIN_MESSAGE_MAP(CCoolBar, baseCCoolBar)
    //{{AFX_MSG_MAP(CCoolBar)
    ON_WM_NCLBUTTONUP()
    ON_WM_NCHITTEST()
    //}}AFX_MSG_MAP
    ON_MESSAGE(WM_SETTEXT, OnSetText)
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////
// CCoolBar message handlers

/////////////////////////////////////////////////////////////////////////
// Mouse Handling
//

void CCoolBar::OnNcLButtonUp(UINT nHitTest, CPoint point)
{
    if (nHitTest == HTCLOSE)
        m_pDockSite->ShowControlBar(this, FALSE, FALSE); // hide

    baseCCoolBar::OnNcLButtonUp(nHitTest, point);
}

#ifndef COLOR_GRADIENTACTIVECAPTION
#define COLOR_GRADIENTACTIVECAPTION     27
#define COLOR_GRADIENTINACTIVECAPTION   28
#define SPI_GETGRADIENTCAPTIONS         0x1008
#endif

void CCoolBar::NcCalcClient(LPRECT pRc, UINT nDockBarID)
{
    CRect rcBar(pRc); // save the bar rect

    // subtract edges
    baseCCoolBar::NcCalcClient(pRc, nDockBarID);

    if (!HasGripper())
        return;

    CRect rc(pRc); // the client rect as calculated by the base class

    BOOL bHorz = (nDockBarID == AFX_IDW_DOCKBAR_TOP) ||
                 (nDockBarID == AFX_IDW_DOCKBAR_BOTTOM);

    if (bHorz)
        rc.DeflateRect(m_cyGripper, 0, 0, 0);
    else
        rc.DeflateRect(0, m_cyGripper, 0, 0);

    // set position for the "x" (hide bar) button
    CPoint ptOrgBtn;
    if (bHorz)
        ptOrgBtn = CPoint(rc.left - 14, rc.top);
    else
        ptOrgBtn = CPoint(rc.right - 12, rc.top - 14);

    m_biHide.Move(ptOrgBtn - rcBar.TopLeft());

    *pRc = rc;
}

void CCoolBar::NcPaintGripper(CDC* pDC, CRect rcClient)
{
    if (!HasGripper())
        return;
#ifndef _SCB_STYLE_FLAT
    CRect gripper = rcClient;
    CRect rcbtn = m_biHide.GetRect();
    BOOL bHorz = IsHorzDocked();

    gripper.DeflateRect(1, 1);
    if (bHorz)
    {   // gripper at left
        gripper.left -= m_cyGripper;
        gripper.right = gripper.left + 3;
        gripper.top = rcbtn.bottom + 3;
    }
    else
    {   // gripper at top
        gripper.top -= m_cyGripper;
        gripper.bottom = gripper.top + 3;
        gripper.right = rcbtn.left - 3;
    }

    pDC->Draw3dRect(gripper, ::GetSysColor(COLOR_BTNHIGHLIGHT),
        ::GetSysColor(COLOR_BTNSHADOW));

    gripper.OffsetRect(bHorz ? 3 : 0, bHorz ? 0 : 3);

    pDC->Draw3dRect(gripper, ::GetSysColor(COLOR_BTNHIGHLIGHT),
        ::GetSysColor(COLOR_BTNSHADOW));

    m_biHide.Paint(pDC);

#else

    // compute the caption rectangle
    BOOL bHorz = IsHorzDocked();
    CRect rcGrip = rcClient;
    CRect rcBtn = m_biHide.GetRect();
    if (bHorz)
    {   // right side gripper
        rcGrip.left -= m_cyGripper + 1;
        rcGrip.right = rcGrip.left + 11;
        rcGrip.top = rcBtn.bottom + 3;
    }
    else
    {   // gripper at top
        rcGrip.top -= m_cyGripper + 1;
        rcGrip.bottom = rcGrip.top + 11;
        rcGrip.right = rcBtn.left - 3;
    }
    rcGrip.InflateRect(bHorz ? 1 : 0, bHorz ? 0 : 1);

    // draw the caption background
    //CBrush br;
    COLORREF clrCptn = m_bActive ?
        ::GetSysColor(COLOR_ACTIVECAPTION) :
        ::GetSysColor(COLOR_INACTIVECAPTION);

    // query gradient info (usually TRUE for Win98/Win2k)
    BOOL bGradient = FALSE;
    ::SystemParametersInfo(SPI_GETGRADIENTCAPTIONS, 0, &bGradient, 0);
    
    if (!bGradient)
        pDC->FillSolidRect(&rcGrip, clrCptn); // solid color
    else
    {
        // gradient from left to right or from bottom to top
        // get second gradient color (the right end)
        COLORREF clrCptnRight = m_bActive ?
            ::GetSysColor(COLOR_GRADIENTACTIVECAPTION) :
            ::GetSysColor(COLOR_GRADIENTINACTIVECAPTION);

        // this will make 2^6 = 64 fountain steps
        int nShift = 6;
        int nSteps = 1 << nShift;

        for (int i = 0; i < nSteps; i++)
        {
            // do a little alpha blending
            int nR = (GetRValue(clrCptn) * (nSteps - i) +
                      GetRValue(clrCptnRight) * i) >> nShift;
            int nG = (GetGValue(clrCptn) * (nSteps - i) +
                      GetGValue(clrCptnRight) * i) >> nShift;
            int nB = (GetBValue(clrCptn) * (nSteps - i) +
                      GetBValue(clrCptnRight) * i) >> nShift;

            COLORREF cr = RGB(nR, nG, nB);

            // then paint with the resulting color
            CRect r2 = rcGrip;
            if (bHorz)
            {
                r2.bottom = rcGrip.bottom - 
                    ((i * rcGrip.Height()) >> nShift);
                r2.top = rcGrip.bottom - 
                    (((i + 1) * rcGrip.Height()) >> nShift);
                if (r2.Height() > 0)
                    pDC->FillSolidRect(r2, cr);
            }
            else
            {
                r2.left = rcGrip.left + 
                    ((i * rcGrip.Width()) >> nShift);
                r2.right = rcGrip.left + 
                    (((i + 1) * rcGrip.Width()) >> nShift);
                if (r2.Width() > 0)
                    pDC->FillSolidRect(r2, cr);
            }
        }
    }

    // draw the caption text - first select a font
    CFont font;
    int ppi = pDC->GetDeviceCaps(LOGPIXELSX);
    int pointsize = MulDiv(96, 96, ppi); // 8.5 points at 96 ppi

    LOGFONT lf;
    BOOL bFont = font.CreatePointFont(pointsize, m_sFontFace);
    if (bFont)
    {
        // get the text color
        COLORREF clrCptnText = m_bActive ?
            ::GetSysColor(COLOR_CAPTIONTEXT) :
            ::GetSysColor(COLOR_INACTIVECAPTIONTEXT);

        int nOldBkMode = pDC->SetBkMode(TRANSPARENT);
        COLORREF clrOldText = pDC->SetTextColor(clrCptnText);

        if (bHorz)
        {
            // rotate text 90 degrees CCW if horizontally docked
            font.GetLogFont(&lf);
            font.DeleteObject();
            lf.lfEscapement = 900;
            font.CreateFontIndirect(&lf);
        }
        
        CFont* pOldFont = pDC->SelectObject(&font);
        CString sTitle;
        GetWindowText(sTitle);

        CPoint ptOrg = bHorz ?
            CPoint(rcGrip.left - 1, rcGrip.bottom - 3) :
            CPoint(rcGrip.left + 3, rcGrip.top - 1);

        pDC->ExtTextOut(ptOrg.x, ptOrg.y,
            ETO_CLIPPED, rcGrip, sTitle, NULL);

        pDC->SelectObject(pOldFont);
        pDC->SetBkMode(nOldBkMode);
        pDC->SetTextColor(clrOldText);
    }

    // draw the button
    m_biHide.Paint(pDC);
#endif
}

UINT CCoolBar::OnNcHitTest(CPoint point)
{
    CRect rcBar;
    GetWindowRect(rcBar);

    UINT nRet = baseCCoolBar::OnNcHitTest(point);
    if (nRet != HTCLIENT)
        return nRet;

    CRect rc = m_biHide.GetRect();
    rc.OffsetRect(rcBar.TopLeft());
    if (rc.PtInRect(point))
        return HTCLOSE;

    return HTCLIENT;
}

/////////////////////////////////////////////////////////////////////////
// CCoolBar implementation helpers

void CCoolBar::OnUpdateCmdUI(CFrameWnd* pTarget,
                                      BOOL bDisableIfNoHndler)
{
    UNUSED_ALWAYS(bDisableIfNoHndler);
    UNUSED_ALWAYS(pTarget);

    if (!HasGripper())
        return;

    BOOL bNeedPaint = FALSE;

    CPoint pt;
    ::GetCursorPos(&pt);
    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;

	CWnd* pFocus = GetFocus();
    BOOL bActiveOld = m_bActive;
    m_bActive = (pFocus->GetSafeHwnd() && IsChild(pFocus));
    if (m_bActive != bActiveOld)
        bNeedPaint = TRUE;

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

    if (bNeedPaint)
        SendMessage(WM_NCPAINT);
}

/////////////////////////////////////////////////////////////////////////
// CSCBButton

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

void CSCBButton::Paint(CDC* pDC)
{
    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));

    COLORREF clrOldTextColor = pDC->GetTextColor();
    pDC->SetTextColor(::GetSysColor(COLOR_BTNTEXT));
    int nPrevBkMode = pDC->SetBkMode(TRANSPARENT);
    CFont font;
    int ppi = pDC->GetDeviceCaps(LOGPIXELSX);
    int pointsize = MulDiv(60, 96, ppi); // 6 points at 96 ppi
    font.CreatePointFont(pointsize, _T("Marlett"));
    CFont* oldfont = pDC->SelectObject(&font);

    pDC->TextOut(ptOrg.x + 3, ptOrg.y + 3, CString(_T("r"))); // x-like

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

BOOL CCoolBar::HasGripper() const
{
#if defined(_SCB_MINIFRAME_CAPTION) || !defined(_SCB_REPLACE_MINIFRAME)
    // if the miniframe has a caption, don't display the gripper
    if (IsFloating())
        return FALSE;
#endif //_SCB_MINIFRAME_CAPTION

    return TRUE;
}

LRESULT CCoolBar::OnSetText(WPARAM wParam, LPARAM lParam)
{
    LRESULT lResult = baseCCoolBar::OnSetText(wParam, lParam);

    SendMessage(WM_NCPAINT);

    return lResult;
}