dlgsplitter.cpp

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	if (m_bHasHScroll)
	{
		int cxSplitterBox = m_cxSplitter + afxData.bNotWin4;// split box bigger
		int x = rectClient.left;
		int y = rectInside.bottom + afxData.bNotWin4;
		for (int col = 0; col < m_nCols; col++)
		{
			CWnd* pScrollBar = GetDlgItem(AFX_IDW_HSCROLL_FIRST + col);
			ASSERT(pScrollBar != NULL);
			int cx = m_pColInfo[col].nCurSize;
			if (col == 0 && m_nCols < m_nMaxCols)
				x += cxSplitterBox, cx -= cxSplitterBox;
			_AfxDeferClientPos(&layout, pScrollBar, x, y, cx, cy, TRUE);
			x += cx + m_cxSplitterGap;
		}
	}

	if (m_bHasVScroll)
	{
		int cySplitterBox = m_cySplitter + afxData.bNotWin4;// split box bigger
		int x = rectInside.right + afxData.bNotWin4;
		int y = rectClient.top;
		for (int row = 0; row < m_nRows; row++)
		{
			CWnd* pScrollBar = GetDlgItem(AFX_IDW_VSCROLL_FIRST + row);
			ASSERT(pScrollBar != NULL);
			int cy = m_pRowInfo[row].nCurSize;
			if (row == 0 && m_nRows < m_nMaxRows)
				y += cySplitterBox, cy -= cySplitterBox;
			_AfxDeferClientPos(&layout, pScrollBar, x, y, cx, cy, TRUE);
			y += cy + m_cySplitterGap;
		}
	}

	//BLOCK: Reposition all the panes
	{
		int x = rectClient.left;
		for (int col = 0; col < m_nCols; col++)
		{
			int cx = m_pColInfo[col].nCurSize;
			int y = rectClient.top;
			for (int row = 0; row < m_nRows; row++)
			{
				int cy = m_pRowInfo[row].nCurSize;
				CWnd* pWnd = GetPane(row, col);
				_AfxDeferClientPos(&layout, pWnd, x, y, cx, cy, FALSE);
				y += cy + m_cySplitterGap;
			}
			x += cx + m_cxSplitterGap;
		}
	}

	// move and resize all the windows at once!
	if (layout.hDWP == NULL || !::EndDeferWindowPos(layout.hDWP))
		TRACE0("Warning: DeferWindowPos failed - low system resources.\n");

	// invalidate all the splitter bars (with NULL pDC)
	DrawAllSplitBars(NULL, rectInside.right, rectInside.bottom);
}

void CDlgSplitterWnd::DrawAllSplitBars(CDC* pDC, int cxInside, int cyInside)
{
	ASSERT_VALID(this);

	// draw column split bars
	CRect rect;
	GetClientRect(rect);
	rect.left += m_cxBorder;
	for (int col = 0; col < m_nCols - 1; col++)
	{
		rect.left += m_pColInfo[col].nCurSize + m_cxBorderShare;
		rect.right = rect.left + m_cxSplitter;
		if (rect.left > cxInside)
			break;      // stop if not fully visible
		OnDrawSplitter(pDC, splitBar, rect);
		rect.left = rect.right + m_cxBorderShare;
	}

	// draw row split bars
	GetClientRect(rect);
	rect.top += m_cyBorder;
	for (int row = 0; row < m_nRows - 1; row++)
	{
		rect.top += m_pRowInfo[row].nCurSize + m_cyBorderShare;
		rect.bottom = rect.top + m_cySplitter;
		if (rect.top > cyInside)
			break;      // stop if not fully visible
		OnDrawSplitter(pDC, splitBar, rect);
		rect.top = rect.bottom + m_cyBorderShare;
	}

	// draw pane borders
	if (afxData.bWin4)
	{
		GetClientRect(rect);
		int x = rect.left;
		for (col = 0; col < m_nCols; col++)
		{
			int cx = m_pColInfo[col].nCurSize + 2*m_cxBorder;
			if (col == m_nCols-1 && m_bHasVScroll)
				cx += afxData.cxVScroll - CX_BORDER;
			int y = rect.top;
			for (int row = 0; row < m_nRows; row++)
			{
				int cy = m_pRowInfo[row].nCurSize + 2*m_cyBorder;
				if (row == m_nRows-1 && m_bHasHScroll)
					cy += afxData.cyHScroll - CX_BORDER;
				OnDrawSplitter(pDC, splitBorder, CRect(x, y, x+cx, y+cy));
				y += cy + m_cySplitterGap - 2*m_cyBorder;
			}
			x += cx + m_cxSplitterGap - 2*m_cxBorder;
		}
	}
}

void CDlgSplitterWnd::OnPaint()
{
	ASSERT_VALID(this);
	CPaintDC dc(this);

	CRect rectClient;
	GetClientRect(&rectClient);
	rectClient.InflateRect(-m_cxBorder, -m_cyBorder);

	CRect rectInside;
	GetInsideRect(rectInside);

	// draw the splitter boxes
	if (m_bHasVScroll && m_nRows < m_nMaxRows)
	{
		OnDrawSplitter(&dc, splitBox,
			CRect(rectInside.right + afxData.bNotWin4, rectClient.top,
				rectClient.right, rectClient.top + m_cySplitter));
	}

	if (m_bHasHScroll && m_nCols < m_nMaxCols)
	{
		OnDrawSplitter(&dc, splitBox,
			CRect(rectClient.left, rectInside.bottom + afxData.bNotWin4,
				rectClient.left + m_cxSplitter, rectClient.bottom));
	}

	// extend split bars to window border (past margins)
	DrawAllSplitBars(&dc, rectInside.right, rectInside.bottom);

	if (!afxData.bWin4)
	{
		// draw splitter intersections (inside only)
		GetInsideRect(rectInside);
		dc.IntersectClipRect(rectInside);
		CRect rect;
		rect.top = rectInside.top;
		for (int row = 0; row < m_nRows - 1; row++)
		{
			rect.top += m_pRowInfo[row].nCurSize + m_cyBorderShare;
			rect.bottom = rect.top + m_cySplitter;
			rect.left = rectInside.left;
			for (int col = 0; col < m_nCols - 1; col++)
			{
				rect.left += m_pColInfo[col].nCurSize + m_cxBorderShare;
				rect.right = rect.left + m_cxSplitter;
				OnDrawSplitter(&dc, splitIntersection, rect);
				rect.left = rect.right + m_cxBorderShare;
			}
			rect.top = rect.bottom + m_cxBorderShare;
		}
	}
}

BOOL CDlgSplitterWnd::OnSetCursor(CWnd* pWnd, UINT nHitTest, UINT message)
{
	if (nHitTest == HTCLIENT && pWnd == this && !m_bTracking)
		return TRUE;    // we will handle it in the mouse move

	return CWnd::OnSetCursor(pWnd, nHitTest, message);
}

// cache of last needed cursor
AFX_STATIC_DATA HCURSOR _afx_hcurLast = NULL;
AFX_STATIC_DATA HCURSOR _afx_hcurDestroy = NULL;
AFX_STATIC_DATA UINT _afx_idcPrimaryLast = 0; // store the primary IDC

void CDlgSplitterWnd::SetSplitCursor(int ht)
{
	UINT idcPrimary;        // app supplied cursor
	LPCTSTR idcSecondary;    // system supplied cursor (MAKEINTRESOURCE)

	AfxLockGlobals(CRIT_SPLITTERWND);
	if (ht == vSplitterBox ||
		ht >= vSplitterBar1 && ht <= vSplitterBar15)
	{
		idcPrimary = AFX_IDC_VSPLITBAR;
		idcSecondary = IDC_SIZENS;
	}
	else if (ht == hSplitterBox ||
		ht >= hSplitterBar1 && ht <= hSplitterBar15)
	{
		idcPrimary = AFX_IDC_HSPLITBAR;
		idcSecondary = IDC_SIZEWE;
	}
	else if (ht == bothSplitterBox ||
		(ht >= splitterIntersection1 && ht <= splitterIntersection225))
	{
		idcPrimary = AFX_IDC_SMALLARROWS;
		idcSecondary = IDC_SIZEALL;
	}
	else
	{
		SetCursor(afxData.hcurArrow);
		idcPrimary = 0;     // don't use it
		idcSecondary = 0;   // don't use it
	}

	if (idcPrimary != 0)
	{
		HCURSOR hcurToDestroy = NULL;
		if (idcPrimary != _afx_idcPrimaryLast)
		{
			HINSTANCE hInst = AfxFindResourceHandle(
				MAKEINTRESOURCE(idcPrimary), RT_GROUP_CURSOR);

			// load in another cursor
			hcurToDestroy = _afx_hcurDestroy;

			// Note: If this LoadCursor call fails, it is likely that
			//  _AFX_NO_SPLITTER_RESOURCES is defined in your .RC file.
			// To correct the situation, remove the following line from your
			//  resource script:
			//      #define _AFX_NO_SPLITTER_RESOURCES
			// This should be done using the Resource.Set Includes... command.

			if ((_afx_hcurDestroy = _afx_hcurLast =
			   ::LoadCursor(hInst, MAKEINTRESOURCE(idcPrimary))) == NULL)
			{
				// will not look as good
				TRACE0("Warning: Could not find splitter cursor - using system provided alternative.\n");

				ASSERT(_afx_hcurDestroy == NULL);    // will not get destroyed
				_afx_hcurLast = ::LoadCursor(NULL, idcSecondary);
				ASSERT(_afx_hcurLast != NULL);
			}
			_afx_idcPrimaryLast = idcPrimary;
		}
		ASSERT(_afx_hcurLast != NULL);
		::SetCursor(_afx_hcurLast);
		ASSERT(_afx_hcurLast != hcurToDestroy);
		if (hcurToDestroy != NULL)
			::DestroyCursor(hcurToDestroy); // destroy after being set
	}
	AfxUnlockGlobals(CRIT_SPLITTERWND);
}

void CDlgSplitterWnd::OnMouseMove(UINT /*nFlags*/, CPoint pt)
{
	if (GetCapture() != this)
		StopTracking(FALSE);

	if (m_bTracking)
	{
		// move tracker to current cursor position

		pt.Offset(m_ptTrackOffset); // pt is the upper right of hit detect
		// limit the point to the valid split range
		if (pt.y < m_rectLimit.top)
			pt.y = m_rectLimit.top;
		else if (pt.y > m_rectLimit.bottom)
			pt.y = m_rectLimit.bottom;
		if (pt.x < m_rectLimit.left)
			pt.x = m_rectLimit.left;
		else if (pt.x > m_rectLimit.right)
			pt.x = m_rectLimit.right;

		if (m_htTrack == vSplitterBox ||
			m_htTrack >= vSplitterBar1 && m_htTrack <= vSplitterBar15)
		{
			if (m_rectTracker.top != pt.y)
			{
				OnInvertTracker(m_rectTracker);
				m_rectTracker.OffsetRect(0, pt.y - m_rectTracker.top);
				OnInvertTracker(m_rectTracker);
			}
		}
		else if (m_htTrack == hSplitterBox ||
			m_htTrack >= hSplitterBar1 && m_htTrack <= hSplitterBar15)
		{
			if (m_rectTracker.left != pt.x)
			{
				OnInvertTracker(m_rectTracker);
				m_rectTracker.OffsetRect(pt.x - m_rectTracker.left, 0);
				OnInvertTracker(m_rectTracker);
			}
		}
		else if (m_htTrack == bothSplitterBox ||
		   (m_htTrack >= splitterIntersection1 &&
			m_htTrack <= splitterIntersection225))
		{
			if (m_rectTracker.top != pt.y)
			{
				OnInvertTracker(m_rectTracker);
				m_rectTracker.OffsetRect(0, pt.y - m_rectTracker.top);
				OnInvertTracker(m_rectTracker);
			}
			if (m_rectTracker2.left != pt.x)
			{
				OnInvertTracker(m_rectTracker2);
				m_rectTracker2.OffsetRect(pt.x - m_rectTracker2.left, 0);
				OnInvertTracker(m_rectTracker2);
			}
		}
	}
	else
	{
		// simply hit-test and set appropriate cursor

		int ht = HitTest(pt);
		SetSplitCursor(ht);
	}
}

void CDlgSplitterWnd::OnLButtonDown(UINT /*nFlags*/, CPoint pt)
{
	if (m_bTracking)
		return;

	StartTracking(HitTest(pt));
}

void CDlgSplitterWnd::OnLButtonDblClk(UINT /*nFlags*/, CPoint pt)
{
	int ht = HitTest(pt);
	CRect rect;

	StopTracking(FALSE);

	if ((GetStyle() & SPLS_DYNAMIC_SPLIT) == 0)
		return;     // do nothing if layout is static

	if (ht == vSplitterBox)
	{
		// half split
		SplitRow(m_pRowInfo[0].nCurSize / 2);
	}
	else if (ht == hSplitterBox)
	{
		// half split
		SplitColumn(m_pColInfo[0].nCurSize / 2);
	}
	else if (ht >= vSplitterBar1 && ht <= vSplitterBar15)
	{
		int rowDelete = ht - vSplitterBar1;
		// don't delete the active row
		int row;
		if (GetActivePane(&row, NULL) != NULL && rowDelete == row)
			++rowDelete;
		DeleteRow(rowDelete);
	}
	else if (ht >= hSplitterBar1 && ht <= hSplitterBar15)
	{
		int colDelete = ht - hSplitterBar1;
		// don't delete the active column
		int col;
		if (GetActivePane(NULL, &col) != NULL && colDelete == col)
			++colDelete;
		DeleteColumn(colDelete);
	}
	else if (ht >= splitterIntersection1 && ht <= splitterIntersection225)
	{
		int rowDelete = (ht - splitterIntersection1) / 15;
		int colDelete = (ht - splitterIntersection1) % 15;
		int row, col;
		if (GetActivePane(&row, &col) != NULL)
		{
			// don't delete the active row or column
			if (col == colDelete)
				++colDelete;
			if (row == rowDelete)
				++rowDelete;
		}
		DeleteRow(rowDelete);
		DeleteColumn(colDelete);
	}
}

void CDlgSplitterWnd::OnLButtonUp(UINT /*nFlags*/, CPoint /*pt*/)
{
	StopTracking(TRUE);
}

void CDlgSplitterWnd::OnCancelMode()
{
	StopTracking(FALSE);
}

void CDlgSplitterWnd::OnKeyDown(UINT nChar, UINT /*nRepCnt*/, UINT /*nFlags*/)
{
	CPoint pt;
	GetCursorPos(&pt);

	int cz = GetKeyState(VK_CONTROL) < 0 ? 1 : 16;
	int dx = 0;
	int dy = 0;

	switch (nChar)
	{
	case VK_ESCAPE:
		StopTracking(FALSE);
		return;
	case VK_RETURN:
		StopTracking(TRUE);
		return;

	case VK_LEFT:
		dx = -1;
		break;
	case VK_RIGHT:
		dx = +1;
		break;
	case VK_UP:
		dy = -1;
		break;
	case VK_DOWN:
		dy = +1;
		break;

	default:
		Default();  // pass other keys through
		return;
	}

	if (m_htTrack == vSplitterBox ||
		m_htTrack >= vSplitterBar1 && m_htTrack <= vSplitterBar15)
	{
		// no movement along X axis
		dx = 0;
	}
	if (m_htTrack == hSplitterBox ||
		m_htTrack >= hSplitterBar1 && m_htTrack <= hSplitterBar15)
	{
		// no movement along Y axis
		dy = 0;
	}

	// adjust to new position
	pt.x += dx * cz;
	pt.y += dy * cz;

	// make sure within valid limits
	ScreenToClient(&pt);
	if (pt.y < m_rectLimit.top)
		pt.y = m_rectLimit.top;
	else if (pt.y > m_rectLimit.bottom)
		pt.y = m_rectLimit.bottom;
	if (pt.x < m_rectLimit.left)
		pt.x = m_rectLimit.left;
	else if (pt.x > m_rectLimit.right)
		pt.x = m_rectLimit.right;
	ClientToScreen(&pt);

	// cause WM_MOUSEMOVE to filter through
	SetCursorPos(pt.x, pt.y);
}

void CDlgSplitterWnd::OnSysCommand(UINT nID, LPARAM lParam)
{
	if ((nID & 0xFFF0) == SC_SIZE)
	{
		CWnd* pParent = GetSizingParent();
		if (pParent != NULL)
		{
			pParent->SendMessage(WM_SYSCOMMAND, (WPARAM)nID, lParam);
			return;
		}
	}
	CWnd::OnSysCommand(nID, lParam);