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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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src
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winfrm2.cpp
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C/C++ Source or Header
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1998-06-16
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// 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_CORE4_SEG
#pragma code_seg(AFX_CORE4_SEG)
#endif
#ifdef _DEBUG
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif
#define new DEBUG_NEW
// dwDockBarMap
const DWORD CFrameWnd::dwDockBarMap[4][2] =
{
{ AFX_IDW_DOCKBAR_TOP, CBRS_TOP },
{ AFX_IDW_DOCKBAR_BOTTOM, CBRS_BOTTOM },
{ AFX_IDW_DOCKBAR_LEFT, CBRS_LEFT },
{ AFX_IDW_DOCKBAR_RIGHT, CBRS_RIGHT },
};
/////////////////////////////////////////////////////////////////////////////
// Dockable control bar helpers
CMiniDockFrameWnd* CFrameWnd::CreateFloatingFrame(DWORD dwStyle)
{
CMiniDockFrameWnd* pFrame = NULL;
ASSERT(m_pFloatingFrameClass != NULL);
pFrame = (CMiniDockFrameWnd*)m_pFloatingFrameClass->CreateObject();
if (pFrame == NULL)
AfxThrowMemoryException();
ASSERT_KINDOF(CMiniDockFrameWnd, pFrame);
if (!pFrame->Create(this, dwStyle))
AfxThrowResourceException();
return pFrame;
}
// dock bars will be created in the order specified by dwDockBarMap
// this also controls which gets priority during layout
// this order can be changed by calling EnableDocking repetitively
// with the exact order of priority
void CFrameWnd::EnableDocking(DWORD dwDockStyle)
{
// must be CBRS_ALIGN_XXX or CBRS_FLOAT_MULTI only
ASSERT((dwDockStyle & ~(CBRS_ALIGN_ANY|CBRS_FLOAT_MULTI)) == 0);
m_pFloatingFrameClass = RUNTIME_CLASS(CMiniDockFrameWnd);
for (int i = 0; i < 4; i++)
{
if (dwDockBarMap[i][1] & dwDockStyle & CBRS_ALIGN_ANY)
{
CDockBar* pDock = (CDockBar*)GetControlBar(dwDockBarMap[i][0]);
if (pDock == NULL)
{
pDock = new CDockBar;
if (!pDock->Create(this,
WS_CLIPSIBLINGS|WS_CLIPCHILDREN|WS_CHILD|WS_VISIBLE |
dwDockBarMap[i][1], dwDockBarMap[i][0]))
{
AfxThrowResourceException();
}
}
}
}
}
void CFrameWnd::DockControlBar(CControlBar* pBar, UINT nDockBarID, LPCRECT lpRect)
{
CDockBar* pDockBar = (nDockBarID == 0) ? NULL :
(CDockBar*)GetControlBar(nDockBarID);
DockControlBar(pBar, pDockBar, lpRect);
}
void CFrameWnd::DockControlBar(CControlBar* pBar, CDockBar* pDockBar, LPCRECT lpRect)
{
ASSERT(pBar != NULL);
// make sure CControlBar::EnableDocking has been called
ASSERT(pBar->m_pDockContext != NULL);
if (pDockBar == NULL)
{
for (int i = 0; i < 4; i++)
{
if ((dwDockBarMap[i][1] & CBRS_ALIGN_ANY) ==
(pBar->m_dwStyle & CBRS_ALIGN_ANY))
{
pDockBar = (CDockBar*)GetControlBar(dwDockBarMap[i][0]);
ASSERT(pDockBar != NULL);
// assert fails when initial CBRS_ of bar does not
// match available docking sites, as set by EnableDocking()
break;
}
}
}
ASSERT(pDockBar != NULL);
ASSERT(m_listControlBars.Find(pBar) != NULL);
ASSERT(pBar->m_pDockSite == this);
// if this assertion occurred it is because the parent of pBar was not initially
// this CFrameWnd when pBar's OnCreate was called
// i.e. this control bar should have been created with a different parent initially
pDockBar->DockControlBar(pBar, lpRect);
}
void CFrameWnd::ReDockControlBar(CControlBar* pBar, CDockBar* pDockBar, LPCRECT lpRect)
{
ASSERT(pBar != NULL);
// make sure CControlBar::EnableDocking has been called
ASSERT(pBar->m_pDockContext != NULL);
if (pDockBar == NULL)
{
// Search for the place holder.
// In case we don't find a place holder, find a bar with the correct alignment
// and keep it in pPossibleBar.
CDockBar* pPossibleBar = NULL;
for (int i = 0; i < 4; i++)
{
CDockBar* pTempBar = (CDockBar*)GetControlBar(dwDockBarMap[i][0]);
if (pTempBar != NULL)
{
// Is this the same bar we docked with before?
if (pTempBar->FindBar((CControlBar*)_AfxGetDlgCtrlID(pBar->m_hWnd)) > 0)
{
pDockBar = pTempBar;
break;
}
}
if ((dwDockBarMap[i][1] & CBRS_ALIGN_ANY) ==
(pBar->m_dwStyle & CBRS_ALIGN_ANY))
{
pPossibleBar = (CDockBar*)GetControlBar(dwDockBarMap[i][0]);
ASSERT(pPossibleBar != NULL);
// assert fails when initial CBRS_ of bar does not
// match available docking sites, as set by EnableDocking()
}
}
// Did we find the place holder?
if (pDockBar == NULL)
pDockBar = pPossibleBar;
}
ASSERT(pDockBar != NULL);
ASSERT(m_listControlBars.Find(pBar) != NULL);
ASSERT(pBar->m_pDockSite == this);
// if this assertion occurred it is because the parent of pBar was not initially
// this CFrameWnd when pBar's OnCreate was called
// i.e. this control bar should have been created with a different parent initially
pDockBar->ReDockControlBar(pBar, lpRect);
}
void CFrameWnd::FloatControlBar(CControlBar* pBar, CPoint point, DWORD dwStyle)
{
ASSERT(pBar != NULL);
// if the bar is already floating and the dock bar only contains this
// bar and same orientation then move the window rather than recreating
// the frame
if (pBar->m_pDockSite != NULL && pBar->m_pDockBar != NULL)
{
CDockBar* pDockBar = pBar->m_pDockBar;
ASSERT_KINDOF(CDockBar, pDockBar);
if (pDockBar->m_bFloating && pDockBar->GetDockedCount() == 1 &&
(dwStyle & pDockBar->m_dwStyle & CBRS_ALIGN_ANY) != 0)
{
CMiniDockFrameWnd* pDockFrame =
(CMiniDockFrameWnd*)pDockBar->GetParent();
ASSERT(pDockFrame != NULL);
ASSERT_KINDOF(CMiniDockFrameWnd, pDockFrame);
pDockFrame->SetWindowPos(NULL, point.x, point.y, 0, 0,
SWP_NOSIZE|SWP_NOZORDER|SWP_NOACTIVATE);
pDockFrame->RecalcLayout(TRUE);
pDockFrame->UpdateWindow();
return;
}
}
if (pBar->m_dwStyle & CBRS_SIZE_DYNAMIC)
{
dwStyle |= CBRS_SIZE_DYNAMIC;
if (dwStyle & CBRS_ORIENT_VERT)
{
dwStyle &= ~CBRS_ALIGN_ANY;
dwStyle |= CBRS_ALIGN_TOP;
}
}
CMiniDockFrameWnd* pDockFrame = CreateFloatingFrame(dwStyle);
ASSERT(pDockFrame != NULL);
pDockFrame->SetWindowPos(NULL, point.x, point.y, 0, 0,
SWP_NOSIZE|SWP_NOZORDER|SWP_NOACTIVATE);
if (pDockFrame->m_hWndOwner == NULL)
pDockFrame->m_hWndOwner = pBar->m_hWnd;
CDockBar* pDockBar = (CDockBar*)pDockFrame->GetDlgItem(AFX_IDW_DOCKBAR_FLOAT);
ASSERT(pDockBar != NULL);
ASSERT_KINDOF(CDockBar, pDockBar);
ASSERT(pBar->m_pDockSite == this);
// if this assertion occurred it is because the parent of pBar was not
// initially this CFrameWnd when pBar's OnCreate was called
// (this control bar should have been created with a different
// parent initially)
pDockBar->DockControlBar(pBar);
pDockFrame->RecalcLayout(TRUE);
if (GetWindowLong(pBar->m_hWnd, GWL_STYLE) & WS_VISIBLE)
{
pDockFrame->ShowWindow(SW_SHOWNA);
pDockFrame->UpdateWindow();
}
}
DWORD CFrameWnd::CanDock(CRect rect, DWORD dwDockStyle, CDockBar** ppDockBar)
{
// dwDockStyle -- allowable styles of bar
// don't allow to dock to floating unless multi is specified
dwDockStyle &= CBRS_ALIGN_ANY|CBRS_FLOAT_MULTI;
if (ppDockBar != NULL)
*ppDockBar = NULL;
POSITION pos = m_listControlBars.GetHeadPosition();
while (pos != NULL)
{
CDockBar* pDockBar = (CDockBar*)m_listControlBars.GetNext(pos);
if (pDockBar->IsDockBar() && pDockBar->IsWindowVisible() &&
(pDockBar->m_dwStyle & dwDockStyle & CBRS_ALIGN_ANY) &&
(!pDockBar->m_bFloating ||
(dwDockStyle & pDockBar->m_dwStyle & CBRS_FLOAT_MULTI)))
{
CRect rectBar;
pDockBar->GetWindowRect(&rectBar);
if (rectBar.Width() == 0)
rectBar.right++;
if (rectBar.Height() == 0)
rectBar.bottom++;
if (rectBar.IntersectRect(rectBar, rect))
{
if (ppDockBar != NULL)
*ppDockBar = pDockBar;
return pDockBar->m_dwStyle & dwDockStyle;
}
}
}
return 0;
}
/////////////////////////////////////////////////////////////////////////////