#include "stdafx.h"
#include "SigmaView.h"
#include "SectionDoc.h"
#include "ItemCopyAsImage.h"
#include "HSimpleTracker.h"

static CItemCopyAsImage * getItemItemCopyAsImage(CSigmaView * pView)
{
	CItem * pItem = pView->GetItem();
	if (pItem == NULL)
		return NULL;

	CItemCopyAsImage * ciItem = dynamic_cast<CItemCopyAsImage *>(pItem);

	return ciItem;
}

extern "C" __declspec(dllexport)
int CopyAsImage_SetRange(CSigmaView * pView, int left, int right, int top, int bottom, HDC hdc)
{
	if (pView == NULL)
		return -1;

	CItemCopyAsImage * pItem = getItemItemCopyAsImage(pView);
	if (pItem == NULL)
		return -1;
	CDC * pDC = CDC::FromHandle(hdc);
	if (pDC == NULL)
		return -1;

	CRect rect;
	rect.left = left;
	rect.right = right;
	rect.top = top;
	rect.bottom = bottom;

	if (pItem->SetRange(rect) == -1)
		return -1;

	CHSimpleTracker * tracker = pItem->GetTracker();
	if (tracker)
	{
		tracker->Draw(pDC);
	}

	return 1;
}

extern "C" __declspec(dllexport)
void CopyAsImage_EraseTrackerForRange(CSigmaView * pView, HDC hdc)
{
	if (pView == NULL)
		return ;

	CItemCopyAsImage * pItem = getItemItemCopyAsImage(pView);
	if (pItem == NULL)
		return ;
	CDC * pDC = CDC::FromHandle(hdc);
	if (pDC == NULL)
		return ;

	CHSimpleTracker * tracker = pItem->GetTracker();
	if (tracker == NULL)
		return;
	
	tracker->Draw(pDC);
}

//区域截屏是否成功 成功返回1 失败返回-1
extern "C" __declspec(dllexport)
int CopyAsImage_IsSuccess(CSigmaView * pView, HDC hdc)
{
	if (pView == NULL)
		return -1;
	if (pView->m_pDoc == NULL)
		return -1;
	if (pView->m_pDoc->IsCapturedScreen())
		return 1;

	return -1;
}

//0--左下箭头    1--垂直箭头        2--右下箭头         3--水平箭头  
//4--旋转箭头    5--水平剪切箭头    6--垂直剪切箭头     7--平移箭头
//-1 出错
extern "C" __declspec(dllexport)
int CopyAsImage_GetTrackerHandleCursorType(CSigmaView *  pView, int mouseX, int mouseY)
{
	if (pView == NULL)
		return -1;

	CItemCopyAsImage * pItem = getItemItemCopyAsImage(pView);
	if (pItem == NULL)
		return -1;

	HTRACKER_HANDLE_KIND handleKind = pItem->GetTracker()->HitTest(mouseX, mouseY);
	if (handleKind == HTRACKER_HANDLE_KIND_INVALID)
		return -1;
	if (handleKind == HTRACKER_HANDLE_KIND_CENTER)
		return 7;

	switch (handleKind)
	{
		case HTRACKER_HANDLE_KIND_TOP_LEFT:
		case HTRACKER_HANDLE_KIND_BOTTOM_RIGHT:
			return 0;
		case HTRACKER_HANDLE_KIND_TOP_RIGHT:
		case HTRACKER_HANDLE_KIND_BOTTOM_LEFT:
			return 2;
		case HTRACKER_HANDLE_KIND_TOP:
		case HTRACKER_HANDLE_KIND_BOTTOM:
			return 1;
		case HTRACKER_HANDLE_KIND_RIGTH:
		case HTRACKER_HANDLE_KIND_LEFT:
			return 3;
	}
	
	return -1;
}

extern "C" __declspec(dllexport)
int CopyAsImage_CopyWindow(CSigmaView * pView, int left, int right, int top, int bottom)
{
	if (pView == NULL)
		return -1;

	CRect rect;
	rect.left = left;
	rect.right = right;
	rect.top = top;
	rect.bottom = bottom;

	CItemCopyAsImage * pItem = getItemItemCopyAsImage(pView);
	if (pItem == NULL)
	{
		pItem = new CItemCopyAsImage(pView->m_pDoc);
		pItem->CopyWindowToClipboard(rect);
		delete pItem;
		pItem = nullptr;
	}
	else {
		pItem->CopyWindowToClipboard(rect);
	}
	return 1;
}

extern "C" __declspec(dllexport)
int CopyAsImage_CopyAll(CSigmaView * pView, int left, int right, int top, int bottom)
{
	if (pView == NULL)
		return -1;

	CItemCopyAsImage * pItem = getItemItemCopyAsImage(pView);
	if (pItem == NULL)
	{
		pItem = new CItemCopyAsImage(pView->m_pDoc);
		pItem->CopyAllToClipboard();
		delete pItem;
		pItem = nullptr;
	}
	else
	{
		pItem->CopyAllToClipboard();
	}
	return 1;
}