#include "stdafx.h"
#include "shsSCBDockContext.h"

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

#ifdef _SCB_REPLACE_MINIFRAME
#ifndef _SCB_MINIFRAME_CAPTION

static void AdjustRectangle(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);
}

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

    InitLoop();

    ASSERT((m_pBar->m_dwStyle & CBRS_SIZE_DYNAMIC) != 0);

    // 得到真正的bar尺寸 (包括边界)
    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);

	// 计算Frame拖动的长方形
    m_rectFrameDragHorz = CRect(rect.TopLeft(), sizeFloat);

#ifdef _MAC
    CMiniFrameWnd::CalcBorders(&m_rectFrameDragHorz,WS_THICKFRAME, WS_EX_FORCESIZEBOX);
#else
    CMiniFrameWnd::CalcBorders(&m_rectFrameDragHorz, WS_THICKFRAME);
#endif
    m_rectFrameDragHorz.DeflateRect(2, 2);
    m_rectFrameDragVert = m_rectFrameDragHorz;
    
    // 调整长方形使点在其之内
    AdjustRectangle(m_rectDragHorz, pt);
    AdjustRectangle(m_rectDragVert, pt);
    AdjustRectangle(m_rectFrameDragHorz, pt);
    AdjustRectangle(m_rectFrameDragVert, pt);

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

#endif //_SCB_MINIFRAME_CAPTION
#endif //_SCB_REPLACE_MINIFRAME