// XTPChartLegendView.cpp
//
// This file is a part of the XTREME TOOLKIT PRO MFC class library.
// (c)1998-2012 Codejock Software, All Rights Reserved.
//
// THIS SOURCE FILE IS THE PROPERTY OF CODEJOCK SOFTWARE AND IS NOT TO BE
// RE-DISTRIBUTED BY ANY MEANS WHATSOEVER WITHOUT THE EXPRESSED WRITTEN
// CONSENT OF CODEJOCK SOFTWARE.
//
// THIS SOURCE CODE CAN ONLY BE USED UNDER THE TERMS AND CONDITIONS OUTLINED
// IN THE XTREME TOOLKIT PRO LICENSE AGREEMENT. CODEJOCK SOFTWARE GRANTS TO
// YOU (ONE SOFTWARE DEVELOPER) THE LIMITED RIGHT TO USE THIS SOFTWARE ON A
// SINGLE COMPUTER.
//
// CONTACT INFORMATION:
// support@codejock.com
// http://www.codejock.com
//
/////////////////////////////////////////////////////////////////////////////

#include "stdafx.h"

#include "Common/XTPPropExchange.h"

#include "Types/XTPChartTypes.h"

#include "XTPChartDefines.h"
#include "XTPChartElement.h"
#include <Chart/XTPChartLegendItem.h>
#include "XTPChartElementView.h"
#include "XTPChartLegend.h"
#include <Chart/XTPChartLegendView.h>
#include "XTPChartContent.h"

#include "Drawing/XTPChartDeviceCommand.h"
#include "Appearance/XTPChartBorder.h"
#include "Appearance/XTPChartFillStyle.h"
#include "Appearance/XTPChartAppearance.h"
#include "Utils/XTPChartTextPainter.h"


//////////////////////////////////////////////////////////////////////////
// CXTPChartLegendView

CXTPChartLegendView::CXTPChartLegendView(CXTPChartLegend* pLegend, CXTPChartElementView* pParentView)
	: CXTPChartElementView(pParentView)
{
	m_pLegend = pLegend;
	m_rcBounds.SetRectEmpty();
}

CXTPChartLegendView::~CXTPChartLegendView()
{

}


CXTPChartDeviceCommand* CXTPChartLegendView::CreateDeviceCommand(CXTPChartDeviceContext* pDC)
{
	int nCount = (int)m_arrItems.GetSize();
	if (nCount == 0)
		return 0;

	CXTPChartDeviceCommand* pDeviceCommand = new CXTPChartHitTestElementCommand(m_pLegend, m_rcBounds);

	int nBorderSize = m_pLegend->GetBorder()->IsVisible() ? m_pLegend->GetBorder()->GetThickness() : 0;
	nBorderSize += 2;

	pDeviceCommand->AddChildCommand(m_pLegend->GetFillStyle()->CreateDeviceCommand(m_rcBounds, m_pLegend->GetActualBackgroundColor(), m_pLegend->GetActualBackgroundColor()));

	if (m_pLegend->GetBorder()->IsVisible())
	{
		pDeviceCommand->AddChildCommand(m_pLegend->GetBorder()->CreateInnerBorderDeviceCommand(m_rcBounds, m_pLegend->GetActualBorderColor()));
	}


	BOOL bVertical = m_pLegend->GetDirection() == xtpChartLegendTopToBottom;
	int nColumnCount = m_pLegend->GetColumnCount();


	if (nColumnCount == 0)
		nColumnCount = bVertical ? 1 : nCount;

	if (nColumnCount > nCount)
		nColumnCount = nCount;

	int nRowCount = (nCount + nColumnCount - 1) / nColumnCount;

	int nLeft = m_rcBounds.left + nBorderSize;

	for (int nColumn = 0; nColumn < nColumnCount; nColumn++)
	{
		int nColumnWidth = 0;

		int nTop = m_rcBounds.top + nBorderSize;

		for (int nRow = 0; nRow < nRowCount; nRow++)
		{
			int i = bVertical ? nColumn * nRowCount + nRow : nRow * nColumnCount + nColumn;
			if (i >= nCount)
				continue;

			CXTPChartLegendItemView* pItem = m_arrItems[i];

			CXTPChartString strName = pItem->GetLegendName();

			if (strName.GetLength() == 0)
				continue;

			CXTPChartTextPainter painter(pDC, strName, m_pLegend);

			CXTPChartSizeF szText = painter.GetSize();
			CXTPChartSizeF sz = szText;

			if (m_pLegend->IsMarkerVisible())
			{
				if (sz.Height < m_pLegend->GetMarkerSize().cy)
					sz.Height = (float)m_pLegend->GetMarkerSize().cy;
			}

			int nTextLeft = nLeft;

			if (m_pLegend->IsMarkerVisible())
			{
				CSize szMarker = m_pLegend->GetMarkerSize();

				CRect rcMarker(CPoint(nLeft, nTop  + (int)sz.Height / 2 - szMarker.cy / 2), szMarker);

				pDeviceCommand->AddChildCommand(pItem->CreateLegendDeviceCommand(pDC, rcMarker));

				nTextLeft += szMarker.cx + 2;
				sz.Width += szMarker.cx + 2;
			}


			painter.SetLocation(CXTPPoint2f((float)nTextLeft, (float)(nTop + sz.Height / 2 - szText.Height / 2)));
			pDeviceCommand->AddChildCommand(painter.CreateDeviceCommand(pDC, m_pLegend->GetActualTextColor()));

			nColumnWidth = max(nColumnWidth, (int)sz.Width + 2);

			nTop += (int)sz.Height + 2;
		}
		nLeft += nColumnWidth;
	}


	return pDeviceCommand;
}

CSize CXTPChartLegendView::CalcSize(CXTPChartDeviceContext* pDC)
{
	UNREFERENCED_PARAMETER(pDC);

	int nHeight = 0;
	int nWidth = 0;

	BOOL bVertical = m_pLegend->GetDirection() == xtpChartLegendTopToBottom;
	int nColumnCount = m_pLegend->GetColumnCount();
	int nBorderSize = m_pLegend->GetBorder()->IsVisible() ? m_pLegend->GetBorder()->GetThickness() : 0;
	nBorderSize += 2;

	int nCount = (int)m_arrItems.GetSize();
	if (nCount == 0)
		return CSize(0, 0);

	if (nColumnCount == 0)
		nColumnCount = bVertical ? 1 : nCount;

	if (nColumnCount > nCount)
		nColumnCount = nCount;

	int nRowCount = (nCount + nColumnCount - 1) / nColumnCount;

	for (int nColumn = 0; nColumn < nColumnCount; nColumn++)
	{
		int nColumnWidth = 0;
		int nColumnHeight = 0;

		for (int nRow = 0; nRow < nRowCount; nRow++)
		{
			int i = bVertical ? nColumn * nRowCount + nRow : nRow * nColumnCount + nColumn;
			if (i >= nCount)
				continue;

			CXTPChartLegendItemView* pItem = m_arrItems[i];

			CXTPChartString strName = pItem->GetLegendName();

			if (strName.GetLength() == 0)
				continue;

			CXTPChartTextPainter painter(pDC, strName, m_pLegend);
			CXTPChartSizeF sz = painter.GetSize();

			if (m_pLegend->IsMarkerVisible())
			{
				if (sz.Height < m_pLegend->GetMarkerSize().cy)
					sz.Height = (float)m_pLegend->GetMarkerSize().cy;

				sz.Width += m_pLegend->GetMarkerSize().cx + 2;
			}

			nColumnWidth = max(nColumnWidth, (int)sz.Width + 2);

			if (nRow) nColumnHeight += 2;
			nColumnHeight += (int)sz.Height;
		}

		nWidth += nColumnWidth;
		nHeight = max(nHeight, nColumnHeight);
	}



	return CSize(nWidth + 2 * nBorderSize, nHeight + 2 * nBorderSize);
}


void CXTPChartLegendView::CalculateView(CXTPChartDeviceContext* pDC, CRect& rcChart)
{

	CSize sz = CalcSize(pDC);
	CPoint pt;

	int nHorizontalAlignment = m_pLegend->GetHorizontalAlignment();
	int nVerticalAlignment = m_pLegend->GetVerticalAlignment();

	BOOL bInside = nHorizontalAlignment != xtpChartLegendNearOutside && nHorizontalAlignment != xtpChartLegendFarOutside &&
		nVerticalAlignment != xtpChartLegendNearOutside && nVerticalAlignment != xtpChartLegendFarOutside;

	if (nHorizontalAlignment == xtpChartLegendNear || nHorizontalAlignment == xtpChartLegendNearOutside)
	{
		pt.x = rcChart.left + (bInside ? 10 : 0);

		if (nHorizontalAlignment == xtpChartLegendNearOutside)
			rcChart.left += sz.cx + 10;

	}
	else if (nHorizontalAlignment == xtpChartLegendCenter)
	{
		pt.x = (rcChart.left + rcChart.right - sz.cx) / 2;
	}
	else
	{
		pt.x = rcChart.right - sz.cx -  (bInside ? 10 : 0);

		if (nHorizontalAlignment == xtpChartLegendFarOutside)
			rcChart.right -= sz.cx + 10;
	}


	if (nVerticalAlignment == xtpChartLegendNear || nVerticalAlignment == xtpChartLegendNearOutside)
	{
		pt.y = rcChart.top + (bInside ? 10 : 0);

		if (nVerticalAlignment== xtpChartLegendNearOutside)
			rcChart.top += sz.cy + 10;

	}
	else if (nVerticalAlignment == xtpChartLegendCenter)
	{
		pt.y = (rcChart.top + rcChart.bottom - sz.cy) / 2;
	}
	else
	{
		pt.y = rcChart.bottom - sz.cy - (bInside ? 10 : 0);

		if (nVerticalAlignment == xtpChartLegendFarOutside)
			rcChart.bottom -= sz.cy + 10;
	}

	pt += m_pLegend->GetOffset();

	m_rcBounds = CRect(pt, sz);

}

void CXTPChartLegendView::AddItem(CXTPChartLegendItemView* pItem)
{
	m_arrItems.Add(pItem);
}