kev/Drawer/Module/GeoSigmaDraw/PrintTool.cpp

#include "StdAfx.h"
#include "PrintTool.h"
#include <DrawModel/Rect8.h>
#include <DrawModel/SXY.h>
#include "SigmaDoc.h"
#include "SigmaView.h"

static CItemView * GetItemView(CSigmaView * pView)
{
	if (pView == 0)
		return 0;

	if (pView->m_pDoc == 0)
		return 0;

	return pView->m_pDoc->GetItemView();
}


CPrintTool::CPrintTool(CSigmaDoc * pDoc)
	:m_pDoc(pDoc)
{
}

void CPrintTool::ViewAll(CDC* pDC)
{
	CItemView * item = m_pDoc->GetItemView();
	if (item == 0)
		return;

	CRect rt = item->GetClientRect();
	//CRect rt = GetPrintArea(pDC);
	//rt.OffsetRect(-rt.left, -rt.top);

	CRect8 rect(1e100, -1e100, -1e100, 1e100);
	if (m_pDoc->GetDraw()->GetCount() > 0)
		m_pDoc->GetDrawRange(rect);
	//else
	//	*((CRect8*)&rect) = rt;
	
	m_pDoc->GetDC().Extend(rect, rt, EXTEND_MODE_CENTER);	//居中显示
	//pDoc->GetDC().Extend(rect, rt, EXTEND_MODE_STRECH);	//拉伸显示

}

CRect CPrintTool::GetPrintArea(CDC* pDC)
{
	CRect rt(0, 0, pDC->GetDeviceCaps(HORZRES), pDC->GetDeviceCaps(VERTRES));
	return rt;
}

bool CPrintTool::GetPartitionNum(int & rowOut, int & colOut, int superpositionWidth)
{
	rowOut = colOut = 0;

	if (m_pDoc->GetDraw()->GetCount() == 0)
	{
		rowOut = colOut = 1;
		return false;
	}

	CItemView*	item = GetItemView((CSigmaView *)m_pDoc->GetView());
	if (item == 0)
	{
		rowOut = colOut = 1;
		return false;
	}

	CRect clientRect = item->GetClientRect(); //打印区域的大小.以打印机点数为单位。


	//获得一页可打印区的打印长度（单位：毫米）
	double sx = clientRect.Width()  * m_pDoc->GetDC().UnitX;
	double sy = clientRect.Height() * m_pDoc->GetDC().UnitY;

	//获得总图的毫米长度
	CRect8 rect(1e100, -1e100, -1e100, 1e100);
	m_pDoc->GetDrawRange(rect);

	//<test>
	CPoint2D pt;
	pt.x0 = 0;
	pt.y0 = 0;
	CPoint2D ptSW = m_pDoc->m_xyDC.GetReal(pt);
	double dx = ptSW.x0 - rect.left;
	double dy = ptSW.y0 - rect.bottom;
	//</test>

	double mx = m_pDoc->GetDC().GetScreenWidth8(rect.Width())   * m_pDoc->GetDC().UnitX;
	double my = m_pDoc->GetDC().GetScreenHeight8(rect.Height()) * m_pDoc->GetDC().UnitY;
	my = fabs(my);

	if (mx <= ZERO) 
		rowOut = 1;
	else
	{
		while (mx > ZERO)
		{
			rowOut++;
			mx -= sx;
			if (mx <= ZERO) 
				break;
			mx += superpositionWidth;
		}
	}
	if (my <= ZERO) 
		colOut = 1;
	else while (my > ZERO)
	{
		colOut++;
		my -= sy;
		if (my <= ZERO) 
			break;
		my += superpositionWidth;
	}
	
	return true;
}

bool CPrintTool::Part(PrintPartition * partition)
{
	CSigmaView * pView = (CSigmaView *)m_pDoc->GetView();
	CItemView*	item = GetItemView(pView);
	if (item == 0)
		return false;

	CDC * pDC = pView->GetDc();
	if (pDC == 0)
		return false;

	CRect clientRect = item->GetClientRect(); //打印区域的大小.以打印机点数为单位。

	if (partition->currentPage == 1)
	{
		pDC->SetViewportOrg(clientRect.left, clientRect.top);
	}
	else if (partition->currentPage > 1)
	{
		int pagew = clientRect.Width();
		int pageh = clientRect.Height();

		int x, y;
		switch (partition->kind)
		{
		case 1://全部
		{
			//由当前页计算出行号和列号
			//行号、列号、页号，起始索引都是1
			//求整行数r= partition->currentPage / partition->row
			int row = partition->currentPage / partition->row;
			row += (partition->currentPage % partition->row > 0); //不是整行 总是少一行.则加一行。是整行则不用加.
			
			//下面句求列号的代码，分成两种情况看。就看懂了。
			//1.当currentPage是整行。2.当currentPage不是整行时。写的很好。
			int col = (partition->currentPage - 1) % partition->row + 1;
			//TRACE("OnPrepareDC( row=%d, col=%d)\n", row,col);
			x = -(pagew - partition->supperPosition)*(col - 1);
			y = -(pageh - partition->supperPosition)*(row - 1);
		}
		break;
		case 2://纵向
			x = -(pagew - partition->supperPosition)*(partition->currentPage - 1);
			y = 0;
			break;
		case 3://横向
			x = 0;
			y = -(pageh - partition->supperPosition)*(partition->currentPage - 1);
			break;
		}
		x += clientRect.left;
		y += clientRect.top;

		//pDC->SetViewportOrg(x/2, y);
		//pView->SetOriginPointForPrint(1000, y);
	}

	return 0;
}