#include "StdAfx.h"
#include "CurveEditorDefault.h"
#include "SigmaDoc.h"
#include "ActionCurveEdit.h"

namespace NItem
{

void CurveEditorDefault::OnDrawDragPreview()
{
	// ========== ??????????????????? ==========
	int i = GetHandleIndex();
	if (i < 0) return;

	CCurveEx* pValue = GetControlCurve();
	if (pValue == nullptr || i >= pValue->num)
	{
		return;
	}

	CXyDC* pDC = GetDC();
	CPen pen(PS_SOLID, 0, DRAG_LINE_COLOR);
	CPen* op = (CPen*)m_pScreenDC->SelectObject(&pen);
	int od = m_pScreenDC->SetROP2(R2_NOTXORPEN);

	double dx = c_last.x0 - c_down.x0;
	double dy = c_last.y0 - c_down.y0;
	dfPoint pt;
	
	// ????????????????????????
	if (i > 0)
	{
		GetXY(pValue, i - 1, pt);
		CPoint ptS1 = pDC->GetScreen(pt);
		m_pScreenDC->MoveTo(ptS1);

		GetXY(pValue, i, pt);
		pt.x0 += dx;
		pt.y0 += dy;
		CPoint ptS2 = pDC->GetScreen(pt);
		m_pScreenDC->LineTo(ptS2.x, ptS2.y);
	}
	
	// ?????????????????????????
	if (i < pValue->num - 1)
	{
		GetXY(pValue, i + 1, pt);
		CPoint ptS1 = pDC->GetScreen(pt);
		m_pScreenDC->MoveTo(ptS1);

		GetXY(pValue, i, pt);
		pt.x0 += dx;
		pt.y0 += dy;
		CPoint ptS2 = pDC->GetScreen(pt);
		m_pScreenDC->LineTo(ptS2.x, ptS2.y);
	}
	
	m_pScreenDC->SetROP2(od);
	m_pScreenDC->SelectObject(op);
}

void CurveEditorDefault::OnCalculateDragEffect(CPointList* pList)
{
	// pList != nullptr???????????????????????????????????
	// pList == nullptr???????????????? Undo/Redo ??????
	BOOL bRedraw = TRUE;
	BOOL bAttachProcess = TRUE;  // ??????????
	CCurveEx* pValue = (CCurveEx*)GetDoc()->GetDraw()->GetAtValue(GetPos());
	
	if (pList)
	{
		// ??????????????????
		CCurveEx* pc = new CCurveEx;
		*pc = *pValue;
		pValue = pc;
		bRedraw = FALSE;
		bAttachProcess = FALSE;
	}

	CPointList oldPoints;  // ???????????????????????
	CPointList newPoints;  // ???????????????????????
	dfPoint pt;
	CRect rt;

	// ========== ??????????????????? ==========
	int i = GetHandleIndex();
	if (bRedraw)
	{
		// ??????????? GetRangeWidthIndex????????????????
		// rt = GetRangeWidthIndex(i);
	}

	// ??????????????????
	if (bAttachProcess)
	{
		if (i - 1 >= 0)
		{
			pValue->GetPoint(i - 1, pt);	oldPoints.AddTail(pt);
		}
		pValue->GetPoint(i, pt);	oldPoints.AddTail(pt);
		if (i + 1 <= pValue->num - 1)
		{
			pValue->GetPoint(i + 1, pt);	oldPoints.AddTail(pt);
		}
	}

	CActionCurveEdit* pAction = 0;
	if (pList == nullptr)
	{
		pAction = new CActionCurveEdit(GetDoc(), 0, GetPos());
		pAction->BackupUndoNode(i, pValue->x[i], pValue->y[i]);
	}
	
	pValue->x[i] += (c_last.x0 - c_down.x0);
	pValue->y[i] += (c_last.y0 - c_down.y0);
	if (pValue->bAutoLocation) pValue->GetLocation();

	if (pList == nullptr)
	{
		pAction->BackupRedoNode(i, pValue->x[i], pValue->y[i]);
		GetDoc()->SetActionItem(pAction);
	}
	
	if (bAttachProcess)
	{
		// ???????????????????
		if (i - 1 >= 0)
		{
			pValue->GetPoint(i - 1, pt);	newPoints.AddTail(pt);
		}
		pValue->GetPoint(i, pt);	newPoints.AddTail(pt);
		if (i + 1 <= pValue->num - 1)
		{
			pValue->GetPoint(i + 1, pt);	newPoints.AddTail(pt);
		}
		AttachProcess(oldPoints, newPoints);
	}

	if (bRedraw)
	{
		// rt = GetRangeWidthIndex(i);
	}

	if (pList)
	{
		pValue->GetPoint(*pList);
		delete pValue;
	}
}

}; // namespace