dockcont.cpp

c语言编程软件vc6.0中文绿色版_vc6.0官方下载

// 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

#define HORZF(dw) (dw & CBRS_ORIENT_HORZ)
#define VERTF(dw) (dw & CBRS_ORIENT_VERT)

AFX_STATIC void AFXAPI _AfxAdjustRectangle(CRect& rect, CPoint pt)
{
	int nXOffset = (pt.x < rect.left) ? (pt.x - rect.left) :
					(pt.x > rect.right) ? (pt.x - rect.right) : 0;
	int nYOffset = (pt.y < rect.top) ? (pt.y - rect.top) :
					(pt.y > rect.bottom) ? (pt.y - rect.bottom) : 0;
	rect.OffsetRect(nXOffset, nYOffset);
}

/////////////////////////////////////////////////////////////////////////////
// CDockContext

CDockContext::CDockContext(CControlBar* pBar)
{
	ASSERT(pBar != NULL);
	ASSERT(pBar->m_pDockSite != NULL);

	m_pBar = pBar;
	m_pDockSite = pBar->m_pDockSite;

	m_uMRUDockID = 0;
	m_rectMRUDockPos.left = 0;
	m_rectMRUDockPos.top = 0;
	if (pBar->m_dwStyle & CBRS_SIZE_DYNAMIC)
		m_dwMRUFloatStyle = pBar->m_dwStyle & (CBRS_ALIGN_TOP | CBRS_SIZE_DYNAMIC);
	else if (pBar->m_dwStyle & CBRS_ORIENT_HORZ)
		m_dwMRUFloatStyle = CBRS_ALIGN_TOP | (pBar->m_dwStyle & CBRS_FLOAT_MULTI);
	else
		m_dwMRUFloatStyle = CBRS_ALIGN_LEFT | (pBar->m_dwStyle & CBRS_FLOAT_MULTI);
	m_ptMRUFloatPos.x = CW_USEDEFAULT;

	ASSERT(m_pDockSite->IsFrameWnd());
	m_pDC = NULL;
}

CDockContext::~CDockContext()
{
	ASSERT(m_pBar != NULL);
	if (m_pBar->m_pDockBar != NULL)
		m_pBar->m_pDockBar->RemoveControlBar(m_pBar, -1, FALSE);
}

/////////////////////////////////////////////////////////////////////////////
// CDockContext Drag Operations

void CDockContext::StartDrag(CPoint pt)
{
	ASSERT_VALID(m_pBar);
	m_bDragging = TRUE;

	InitLoop();

	// GetWindowRect returns screen coordinates(not mirrored),
	// so if the desktop is mirrored then turn off mirroring
	// for the desktop dc so that we get correct focus rect drawn.
	// This layout change should be remembered, just in case ...

	if (m_pDC->GetLayout() & LAYOUT_RTL)
		m_pDC->SetLayout(LAYOUT_LTR);

	if (m_pBar->m_dwStyle & CBRS_SIZE_DYNAMIC)
	{
		// get true bar size (including borders)
		CRect rect;
		m_pBar->GetWindowRect(rect);
		m_ptLast = pt;
		CSize sizeHorz = m_pBar->CalcDynamicLayout(0, LM_HORZ | LM_HORZDOCK);
		CSize sizeVert = m_pBar->CalcDynamicLayout(0, LM_VERTDOCK);
		CSize sizeFloat = m_pBar->CalcDynamicLayout(0, LM_HORZ | LM_MRUWIDTH);

		m_rectDragHorz = CRect(rect.TopLeft(), sizeHorz);
		m_rectDragVert = CRect(rect.TopLeft(), sizeVert);

		// calculate frame dragging rectangle
		m_rectFrameDragHorz = CRect(rect.TopLeft(), sizeFloat);
		m_rectFrameDragVert = CRect(rect.TopLeft(), sizeFloat);

		CMiniFrameWnd::CalcBorders(&m_rectFrameDragHorz);
		CMiniFrameWnd::CalcBorders(&m_rectFrameDragVert);

		m_rectFrameDragHorz.InflateRect(-afxData.cxBorder2, -afxData.cyBorder2);
		m_rectFrameDragVert.InflateRect(-afxData.cxBorder2, -afxData.cyBorder2);
	}
	else if (m_pBar->m_dwStyle & CBRS_SIZE_FIXED)
	{
		// get true bar size (including borders)
		CRect rect;
		m_pBar->GetWindowRect(rect);
		m_ptLast = pt;
		CSize sizeHorz = m_pBar->CalcDynamicLayout(-1, LM_HORZ | LM_HORZDOCK);
		CSize sizeVert = m_pBar->CalcDynamicLayout(-1, LM_VERTDOCK);

		// calculate frame dragging rectangle
		m_rectFrameDragHorz = m_rectDragHorz = CRect(rect.TopLeft(), sizeHorz);
		m_rectFrameDragVert = m_rectDragVert = CRect(rect.TopLeft(), sizeVert);

		CMiniFrameWnd::CalcBorders(&m_rectFrameDragHorz);
		CMiniFrameWnd::CalcBorders(&m_rectFrameDragVert);
		m_rectFrameDragHorz.InflateRect(-afxData.cxBorder2, -afxData.cyBorder2);
		m_rectFrameDragVert.InflateRect(-afxData.cxBorder2, -afxData.cyBorder2);
	}
	else
	{
		// get true bar size (including borders)
		CRect rect;
		m_pBar->GetWindowRect(rect);
		m_ptLast = pt;
		BOOL bHorz = HORZF(m_dwStyle);
		DWORD dwMode = !bHorz ? (LM_HORZ | LM_HORZDOCK) : LM_VERTDOCK;
		CSize size = m_pBar->CalcDynamicLayout(-1, dwMode);

		// calculate inverted dragging rect
		if (bHorz)
		{
			m_rectDragHorz = rect;
			m_rectDragVert = CRect(CPoint(pt.x - rect.Height()/2, rect.top), size);
		}
		else // vertical orientation
		{
			m_rectDragVert = rect;
			m_rectDragHorz = CRect(CPoint(rect.left, pt.y - rect.Width()/2), size);
		}

		// calculate frame dragging rectangle
		m_rectFrameDragHorz = m_rectDragHorz;
		m_rectFrameDragVert = m_rectDragVert;

		CMiniFrameWnd::CalcBorders(&m_rectFrameDragHorz);
		CMiniFrameWnd::CalcBorders(&m_rectFrameDragVert);
		m_rectFrameDragHorz.InflateRect(-afxData.cxBorder2, -afxData.cyBorder2);
		m_rectFrameDragVert.InflateRect(-afxData.cxBorder2, -afxData.cyBorder2);
	}

	// adjust rectangles so that point is inside
	_AfxAdjustRectangle(m_rectDragHorz, pt);
	_AfxAdjustRectangle(m_rectDragVert, pt);
	_AfxAdjustRectangle(m_rectFrameDragHorz, pt);
	_AfxAdjustRectangle(m_rectFrameDragVert, pt);

	// initialize tracking state and enter tracking loop
	m_dwOverDockStyle = CanDock();
	Move(pt);   // call it here to handle special keys
	Track();
}

void CDockContext::Move(CPoint pt)
{
	CPoint ptOffset = pt - m_ptLast;

	// offset all drag rects to new position
	m_rectDragHorz.OffsetRect(ptOffset);
	m_rectFrameDragHorz.OffsetRect(ptOffset);
	m_rectDragVert.OffsetRect(ptOffset);
	m_rectFrameDragVert.OffsetRect(ptOffset);
	m_ptLast = pt;

	// if control key is down don't dock
	m_dwOverDockStyle = m_bForceFrame ? 0 : CanDock();

	// update feedback
	DrawFocusRect();
}

void CDockContext::OnKey(int nChar, BOOL bDown)
{
	if (nChar == VK_CONTROL)
		UpdateState(&m_bForceFrame, bDown);
	if (nChar == VK_SHIFT)
		UpdateState(&m_bFlip, bDown);
}

void CDockContext::EndDrag()
{
	CancelLoop();

	if (m_dwOverDockStyle != 0)
	{
		CDockBar* pDockBar = GetDockBar(m_dwOverDockStyle);
		ASSERT(pDockBar != NULL);

		CRect rect = (m_dwOverDockStyle & CBRS_ORIENT_VERT) ?
			m_rectDragVert : m_rectDragHorz;

		UINT uID = _AfxGetDlgCtrlID(pDockBar->m_hWnd);
		if (uID >= AFX_IDW_DOCKBAR_TOP &&
			uID <= AFX_IDW_DOCKBAR_BOTTOM)
		{
			m_uMRUDockID = uID;
			m_rectMRUDockPos = rect;
			pDockBar->ScreenToClient(&m_rectMRUDockPos);
		}

		// dock it at the specified position, RecalcLayout will snap
		m_pDockSite->DockControlBar(m_pBar, pDockBar, &rect);
		m_pDockSite->RecalcLayout();
	}
	else if ((m_dwStyle & CBRS_SIZE_DYNAMIC) || (HORZF(m_dwStyle) && !m_bFlip) ||
			(VERTF(m_dwStyle) && m_bFlip))
	{
		m_dwMRUFloatStyle = CBRS_ALIGN_TOP | (m_dwDockStyle & CBRS_FLOAT_MULTI);
		m_ptMRUFloatPos = m_rectFrameDragHorz.TopLeft();
		m_pDockSite->FloatControlBar(m_pBar, m_ptMRUFloatPos, m_dwMRUFloatStyle);
	}
	else // vertical float
	{
		m_dwMRUFloatStyle = CBRS_ALIGN_LEFT | (m_dwDockStyle & CBRS_FLOAT_MULTI);
		m_ptMRUFloatPos = m_rectFrameDragVert.TopLeft();
		m_pDockSite->FloatControlBar(m_pBar, m_ptMRUFloatPos, m_dwMRUFloatStyle);
	}
}

/////////////////////////////////////////////////////////////////////////////
// CDockContext Resize Operations

#define m_rectRequestedSize     m_rectDragHorz
#define m_rectActualSize        m_rectDragVert
#define m_rectActualFrameSize   m_rectFrameDragHorz
#define m_rectFrameBorders      m_rectFrameDragVert

void CDockContext::StartResize(int nHitTest, CPoint pt)
{
	ASSERT_VALID(m_pBar);
	ASSERT(m_pBar->m_dwStyle & CBRS_SIZE_DYNAMIC);
	m_bDragging = FALSE;

	InitLoop();

	// GetWindowRect returns screen coordinates(not mirrored)
	// So if the desktop is mirrored then turn off mirroring
	// for the desktop dc so that we draw correct focus rect

	if (m_pDC->GetLayout() & LAYOUT_RTL)
		m_pDC->SetLayout(LAYOUT_LTR);

	// get true bar size (including borders)
	CRect rect;
	m_pBar->GetWindowRect(rect);
	m_ptLast = pt;
	m_nHitTest = nHitTest;

	CSize size = m_pBar->CalcDynamicLayout(0, LM_HORZ | LM_MRUWIDTH);
	m_rectRequestedSize = CRect(rect.TopLeft(), size);
	m_rectActualSize = CRect(rect.TopLeft(), size);
	m_rectActualFrameSize = CRect(rect.TopLeft(), size);

	// calculate frame rectangle
	CMiniFrameWnd::CalcBorders(&m_rectActualFrameSize);
	m_rectActualFrameSize.InflateRect(-afxData.cxBorder2, -afxData.cyBorder2);

	m_rectFrameBorders = CRect(CPoint(0,0),
		m_rectActualFrameSize.Size() - m_rectActualSize.Size());

	// initialize tracking state and enter tracking loop
	m_dwOverDockStyle = 0;
	Stretch(pt);   // call it here to handle special keys
	Track();
}

void CDockContext::Stretch(CPoint pt)
{
	CPoint ptOffset = pt - m_ptLast;

	// offset all drag rects to new position
	int nLength = 0;
	DWORD dwMode = LM_HORZ;
	if (m_nHitTest == HTLEFT || m_nHitTest == HTRIGHT)
	{
		if (m_nHitTest == HTLEFT)
			m_rectRequestedSize.left += ptOffset.x;
		else
			m_rectRequestedSize.right += ptOffset.x;
		nLength = m_rectRequestedSize.Width();
	}
	else
	{
		dwMode |= LM_LENGTHY;
		if (m_nHitTest == HTTOP)
			m_rectRequestedSize.top += ptOffset.y;
		else
			m_rectRequestedSize.bottom += ptOffset.y;
		nLength = m_rectRequestedSize.Height();
	}
	nLength = (nLength >= 0) ? nLength : 0;

	CSize size = m_pBar->CalcDynamicLayout(nLength, dwMode);

	CRect rectDesk;
	HWND hWndDesk = ::GetDesktopWindow();
	::GetWindowRect(hWndDesk, &rectDesk);
	CRect rectTemp = m_rectActualFrameSize;

	if (m_nHitTest == HTLEFT || m_nHitTest == HTTOP)
	{
		rectTemp.left = rectTemp.right -
			(size.cx + m_rectFrameBorders.Width());