#include "SvmClip.h"

namespace MetaFile
{
	CSvmClip::CSvmClip()
	{
	}
	CSvmClip::~CSvmClip()
	{
		Clear();
	}
	void CSvmClip::operator=(CSvmClip& oClip)
	{
		Clear();
		for (unsigned int ulIndex = 0; ulIndex < oClip.m_vCommands.size(); ulIndex++)
		{
			CSvmClipCommandBase* pCommand = oClip.m_vCommands.at(ulIndex);
			CSvmClipCommandBase* pNewCommand = NULL;
			switch (pCommand->GetType())
			{
				case SVM_CLIPCOMMAND_INTERSECT:
				{
					CSvmClipCommandIntersect* pI = (CSvmClipCommandIntersect*)pCommand;
					pNewCommand = new CSvmClipCommandIntersect(pI->m_dL, pI->m_dT, pI->m_dR, pI->m_dB);
					break;
				}
				case SVM_CLIPCOMMAND_EXCLUDE:
				{
					CSvmClipCommandExclude* pE = (CSvmClipCommandExclude*)pCommand;
					pNewCommand = new CSvmClipCommandExclude(pE->m_dL, pE->m_dT, pE->m_dR, pE->m_dB, pE->m_dWindowL, pE->m_dWindowT, pE->m_dWindowR, pE->m_dWindowB);
					break;
				}
			}

			if (pNewCommand)
				m_vCommands.push_back(pNewCommand);
		}
	}
	void CSvmClip::Reset()
	{
		Clear();
	}
	bool CSvmClip::Intersect(double dL, double dT, double dR, double dB)
	{
		CSvmClipCommandBase* pCommand = new CSvmClipCommandIntersect(dL, dT, dR, dB);
		if (!pCommand)
			return false;

		m_vCommands.push_back(pCommand);
		return true;
	}
	bool CSvmClip::Exclude(double dL, double dT, double dR, double dB, double dWindowL, double dWindowT, double dWindowR, double dWindowB)
	{
		CSvmClipCommandBase* pCommand = new CSvmClipCommandExclude(dL, dT, dR, dB, dWindowL, dWindowT, dWindowR, dWindowB);
		if (!pCommand)
			return false;

		m_vCommands.push_back(pCommand);
		return true;
	}
	void CSvmClip::Clear()
	{
		for (unsigned int ulIndex = 0; ulIndex < m_vCommands.size(); ulIndex++)
		{
			CSvmClipCommandBase* pCommand = m_vCommands.at(ulIndex);
			delete pCommand;
		}
		m_vCommands.clear();
	}
	void CSvmClip::ClipOnRenderer(IOutputDevice* pOutput)
	{
		if (pOutput)
		{
			pOutput->ResetClip();
			for (unsigned int ulIndex = 0; ulIndex < m_vCommands.size(); ulIndex++)
			{
				CSvmClipCommandBase* pCommand = m_vCommands.at(ulIndex);

				switch (pCommand->GetType())
				{
					case SVM_CLIPCOMMAND_INTERSECT:
					{
						CSvmClipCommandIntersect* pIntersect = (CSvmClipCommandIntersect*)pCommand;

						pOutput->StartClipPath(RGN_AND, ALTERNATE);
						pOutput->MoveTo(pIntersect->m_dL, pIntersect->m_dT);
						pOutput->LineTo(pIntersect->m_dR, pIntersect->m_dT);
						pOutput->LineTo(pIntersect->m_dR, pIntersect->m_dB);
						pOutput->LineTo(pIntersect->m_dL, pIntersect->m_dB);
						pOutput->ClosePath();
						pOutput->EndClipPath(RGN_AND);

						break;
					}
					case SVM_CLIPCOMMAND_EXCLUDE:
					{
						CSvmClipCommandExclude* pExclude = (CSvmClipCommandExclude*)pCommand;

						pOutput->StartClipPath(RGN_AND, ALTERNATE);

						pOutput->MoveTo(pExclude->m_dL, pExclude->m_dT);
						pOutput->LineTo(pExclude->m_dR, pExclude->m_dT);
						pOutput->LineTo(pExclude->m_dR, pExclude->m_dB);
						pOutput->LineTo(pExclude->m_dL, pExclude->m_dB);
						pOutput->ClosePath();

						pOutput->MoveTo(pExclude->m_dWindowL, pExclude->m_dWindowT);
						pOutput->LineTo(pExclude->m_dWindowR, pExclude->m_dWindowT);
						pOutput->LineTo(pExclude->m_dWindowR, pExclude->m_dWindowB);
						pOutput->LineTo(pExclude->m_dWindowL, pExclude->m_dWindowB);
						pOutput->ClosePath();


						pOutput->EndClipPath(RGN_AND);

						break;
					}
				}
			}
		}
	}
}