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Tricks of the Windows Gam…ming Gurus (2nd Edition)
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Disc2.iso
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vc98
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mfc
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barcool.cpp
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C/C++ Source or Header
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1998-06-16
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9KB
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331 lines
// This is a part of the Microsoft Foundation Classes C++ library.
// Copyright (C) 1992-1998 Microsoft Corporation
// All rights reserved.
//
// This source code is only intended as a supplement to the
// Microsoft Foundation Classes Reference and related
// electronic documentation provided with the library.
// See these sources for detailed information regarding the
// Microsoft Foundation Classes product.
#include "stdafx.h"
#ifdef AFX_CORE3_SEG
#pragma code_seg(AFX_CORE3_SEG)
#endif
#ifdef _DEBUG
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif
#define new DEBUG_NEW
/////////////////////////////////////////////////////////////////////////////
// CReBar
BEGIN_MESSAGE_MAP(CReBar, CControlBar)
//{{AFX_MSG_MAP(CReBar)
ON_WM_NCCREATE()
ON_WM_PAINT()
ON_WM_NCCALCSIZE()
ON_WM_ERASEBKGND()
ON_WM_NCPAINT()
ON_NOTIFY_REFLECT(RBN_HEIGHTCHANGE, OnHeightChange)
ON_NOTIFY_REFLECT(RBN_ENDDRAG, OnHeightChange)
ON_MESSAGE(RB_SHOWBAND, OnShowBand)
ON_MESSAGE_VOID(WM_RECALCPARENT, OnRecalcParent)
//}}AFX_MSG_MAP
END_MESSAGE_MAP()
CReBar::CReBar()
{
SetBorders();
}
void CReBar::OnRecalcParent()
{
CFrameWnd* pFrameWnd = GetParentFrame();
ASSERT(pFrameWnd != NULL);
pFrameWnd->RecalcLayout();
}
void CReBar::OnHeightChange(NMHDR* /*pNMHDR*/, LRESULT* pResult)
{
// does the CReBar have a frame?
CFrameWnd* pFrameWnd = GetParentFrame();
if (pFrameWnd != NULL)
{
// it does -- tell it to recalc its layout
if (!pFrameWnd->m_bInRecalcLayout)
pFrameWnd->RecalcLayout();
else
PostMessage(WM_RECALCPARENT);
}
*pResult = 0;
}
LRESULT CReBar::OnShowBand(WPARAM wParam, LPARAM)
{
LRESULT lResult = Default();
if (lResult)
{
// keep window visible state in sync with band visible state
REBARBANDINFO rbBand;
rbBand.cbSize = sizeof(rbBand);
rbBand.fMask = RBBIM_CHILD|RBBIM_STYLE;
VERIFY(DefWindowProc(RB_GETBANDINFO, wParam, (LPARAM)&rbBand));
CControlBar* pBar = DYNAMIC_DOWNCAST(CControlBar, CWnd::FromHandlePermanent(rbBand.hwndChild));
BOOL bWindowVisible;
if (pBar != NULL)
bWindowVisible = pBar->IsVisible();
else
bWindowVisible = (::GetWindowLong(rbBand.hwndChild, GWL_STYLE) & WS_VISIBLE) != 0;
BOOL bBandVisible = (rbBand.fStyle & RBBS_HIDDEN) == 0;
if (bWindowVisible != bBandVisible)
VERIFY(::ShowWindow(rbBand.hwndChild, bBandVisible ? SW_SHOW : SW_HIDE));
}
return lResult;
}
BOOL CReBar::_AddBar(CWnd* pBar, REBARBANDINFO* pRBBI)
{
ASSERT_VALID(this);
ASSERT(::IsWindow(m_hWnd));
ASSERT(pBar != NULL);
ASSERT(::IsWindow(pBar->m_hWnd));
pRBBI->cbSize = sizeof(REBARBANDINFO);
pRBBI->fMask |= RBBIM_CHILD | RBBIM_CHILDSIZE;
pRBBI->hwndChild = pBar->m_hWnd;
CSize size;
CControlBar* pTemp = DYNAMIC_DOWNCAST(CControlBar, pBar);
if (pTemp != NULL)
{
size = pTemp->CalcFixedLayout(FALSE, m_dwStyle & CBRS_ORIENT_HORZ);
}
else
{
CRect rect;
pBar->GetWindowRect(&rect);
size = rect.Size();
}
//WINBUG: COMCTL32.DLL is off by 4 pixels in its sizing logic. Whatever
// is specified as the minimum size, the system rebar will allow that band
// to be 4 actual pixels smaller! That's why we add 4 to the size here.
ASSERT(_afxComCtlVersion != -1);
pRBBI->cxMinChild = size.cx + (_afxComCtlVersion < VERSION_IE401 ? 4 : 0);
pRBBI->cyMinChild = size.cy;
BOOL bResult = (BOOL)DefWindowProc(RB_INSERTBAND, (WPARAM)-1, (LPARAM)pRBBI);
CFrameWnd* pFrameWnd = GetParentFrame();
if (pFrameWnd != NULL)
pFrameWnd->RecalcLayout();
return bResult;
}
BOOL CReBar::AddBar(CWnd* pBar, LPCTSTR pszText, CBitmap* pbmp, DWORD dwStyle)
{
REBARBANDINFO rbBand;
rbBand.fMask = RBBIM_STYLE;
rbBand.fStyle = dwStyle;
if (pszText != NULL)
{
rbBand.fMask |= RBBIM_TEXT;
rbBand.lpText = const_cast<LPTSTR>(pszText);
}
if (pbmp != NULL)
{
rbBand.fMask |= RBBIM_BACKGROUND;
rbBand.hbmBack = (HBITMAP)*pbmp;
}
return _AddBar(pBar, &rbBand);
}
BOOL CReBar::AddBar(CWnd* pBar, COLORREF clrFore, COLORREF clrBack, LPCTSTR pszText, DWORD dwStyle)
{
REBARBANDINFO rbBand;
rbBand.fMask = RBBIM_STYLE | RBBIM_COLORS;
rbBand.fStyle = dwStyle;
rbBand.clrFore = clrFore;
rbBand.clrBack = clrBack;
if (pszText != NULL)
{
rbBand.fMask |= RBBIM_TEXT;
rbBand.lpText = const_cast<LPTSTR>(pszText);
}
return _AddBar(pBar, &rbBand);
}
CSize CReBar::CalcFixedLayout(BOOL bStretch, BOOL bHorz)
{
ASSERT_VALID(this);
ASSERT(::IsWindow(m_hWnd));
// the union of the band rectangles is the total bounding rect
int nCount = DefWindowProc(RB_GETBANDCOUNT, 0, 0);
REBARBANDINFO rbBand;
rbBand.cbSize = sizeof(rbBand);
int nTemp;
// sync up hidden state of the bands
for (nTemp = nCount; nTemp--; )
{
rbBand.fMask = RBBIM_CHILD|RBBIM_STYLE;
VERIFY(DefWindowProc(RB_GETBANDINFO, nTemp, (LPARAM)&rbBand));
CControlBar* pBar = DYNAMIC_DOWNCAST(CControlBar, CWnd::FromHandlePermanent(rbBand.hwndChild));
BOOL bWindowVisible;
if (pBar != NULL)
bWindowVisible = pBar->IsVisible();
else
bWindowVisible = (::GetWindowLong(rbBand.hwndChild, GWL_STYLE) & WS_VISIBLE) != 0;
BOOL bBandVisible = (rbBand.fStyle & RBBS_HIDDEN) == 0;
if (bWindowVisible != bBandVisible)
VERIFY(DefWindowProc(RB_SHOWBAND, nTemp, bWindowVisible));
}
// determine bounding rect of all visible bands
CRect rectBound; rectBound.SetRectEmpty();
for (nTemp = nCount; nTemp--; )
{
rbBand.fMask = RBBIM_STYLE;
VERIFY(DefWindowProc(RB_GETBANDINFO, nTemp, (LPARAM)&rbBand));
if ((rbBand.fStyle & RBBS_HIDDEN) == 0)
{
CRect rect;
VERIFY(DefWindowProc(RB_GETRECT, nTemp, (LPARAM)&rect));
rectBound |= rect;
}
}
// add borders as part of bounding rect
if (!rectBound.IsRectEmpty())
{
CRect rect; rect.SetRectEmpty();
CalcInsideRect(rect, bHorz);
rectBound.right -= rect.Width();
rectBound.bottom -= rect.Height();
}
return CSize((bHorz && bStretch) ? 32767 : rectBound.Width(),
(!bHorz && bStretch) ? 32767 : rectBound.Height());
}
CSize CReBar::CalcDynamicLayout(int /*nLength*/, DWORD dwMode)
{
if (dwMode & LM_HORZDOCK)
ASSERT(dwMode & LM_HORZ);
return CalcFixedLayout(dwMode & LM_STRETCH, dwMode & LM_HORZ);
}
BOOL CReBar::Create(CWnd* pParentWnd, DWORD dwCtrlStyle, DWORD dwStyle, UINT nID)
{
ASSERT_VALID(pParentWnd); // must have a parent
ASSERT (!((dwStyle & CBRS_SIZE_FIXED) && (dwStyle & CBRS_SIZE_DYNAMIC)));
// save the style
m_dwStyle = (dwStyle & CBRS_ALL);
if (nID == AFX_IDW_REBAR)
m_dwStyle |= CBRS_HIDE_INPLACE;
dwStyle &= ~CBRS_ALL;
dwStyle |= CCS_NOPARENTALIGN|CCS_NOMOVEY|CCS_NODIVIDER|CCS_NORESIZE|RBS_VARHEIGHT;
dwStyle |= dwCtrlStyle;
// initialize common controls
VERIFY(AfxDeferRegisterClass(AFX_WNDCOMMCTL_COOL_REG));
_AfxGetComCtlVersion();
ASSERT(_afxComCtlVersion != -1);
// create the HWND
CRect rect; rect.SetRectEmpty();
if (!CWnd::Create(REBARCLASSNAME, NULL, dwStyle, rect, pParentWnd, nID))
return FALSE;
// Note: Parent must resize itself for control bar to be resized
return TRUE;
}
void CReBar::OnUpdateCmdUI(CFrameWnd* pTarget, BOOL bDisableIfNoHandler)
{
UpdateDialogControls(pTarget, bDisableIfNoHandler);
}
BOOL CReBar::OnNcCreate(LPCREATESTRUCT lpCreateStruct)
{
if (!CControlBar::OnNcCreate(lpCreateStruct))
return FALSE;
// if the owner was set before the rebar was created, set it now
if (m_hWndOwner != NULL)
DefWindowProc(RB_SETPARENT, (WPARAM)m_hWndOwner, 0);
return TRUE;
}
BOOL CReBar::OnEraseBkgnd(CDC*)
{
return (BOOL)Default();
}
void CReBar::OnNcCalcSize(BOOL /*bCalcValidRects*/, NCCALCSIZE_PARAMS* lpncsp)
{
// calculate border space (will add to top/bottom, subtract from right/bottom)
CRect rect; rect.SetRectEmpty();
BOOL bHorz = (m_dwStyle & CBRS_ORIENT_HORZ) != 0;
CControlBar::CalcInsideRect(rect, bHorz);
// adjust non-client area for border space
lpncsp->rgrc[0].left += rect.left;
lpncsp->rgrc[0].top += rect.top;
lpncsp->rgrc[0].right += rect.right;
lpncsp->rgrc[0].bottom += rect.bottom;
}
void CReBar::OnNcPaint()
{
EraseNonClient();
}
void CReBar::OnPaint()
{
Default();
}
int CReBar::OnToolHitTest(CPoint point, TOOLINFO* pTI) const
{
ASSERT_VALID(this);
ASSERT(::IsWindow(m_hWnd));
HWND hWndChild = _AfxChildWindowFromPoint(m_hWnd, point);
CWnd* pWnd = CWnd::FromHandlePermanent(hWndChild);
if (pWnd == NULL)
return CControlBar::OnToolHitTest(point, pTI);
ASSERT(pWnd->m_hWnd == hWndChild);
return pWnd->OnToolHitTest(point, pTI);
}
LRESULT CReBar::WindowProc(UINT message, WPARAM wParam, LPARAM lParam)
{
// special handling for certain messages (forwarding to owner/parent)
switch (message)
{
case WM_POPMESSAGESTRING:
case WM_SETMESSAGESTRING:
return GetOwner()->SendMessage(message, wParam, lParam);
}
return CControlBar::WindowProc(message, wParam, lParam);
}
#ifdef AFX_INIT_SEG
#pragma code_seg(AFX_INIT_SEG)
#endif
IMPLEMENT_DYNAMIC(CReBar, CControlBar)
/////////////////////////////////////////////////////////////////////////////