printout.cpp

Powerful and Portable GPS application -- support Linux, Windows, Windows CE GPS navigation and Map m

/*
 *  Roadnav
 *  Printout.cpp
 *
 *  Copyright (c) 2004 - 2007 Richard L. Lynch <[e-mail]>
 *
 *  This program is free software; you can redistribute it and/or
 *  modify it under the terms of version 2 of the GNU General Public License
 *  as published by the Free Software Foundation.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program; if not, write to the Free Software
 *  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 */
 
//////////////////////////////////////////////////////////////////////////////
/// \file
///
/// This file contains the Printout class, which is responsible
/// for making a MapControl print to a printer or preview window
///
//////////////////////////////////////////////////////////////////////////////

#ifdef HAVE_CONFIG_H
#  include <config.h>
#endif

#ifdef _MSC_VER
#pragma warning(disable: 4786)
#endif

#include <wx/wx.h>
#include <wx/print.h>

#include "Printout.h"

//////////////////////////////////////////////////////////////////////////////
///
/// \brief Printout constructor - remember the supplied variables, call base class
/// constructor
///
//////////////////////////////////////////////////////////////////////////////
Printout::Printout(wxString strTitle, MapControl * pctlMap) : wxPrintout(strTitle), m_pctlMap(pctlMap) 
{
}

//////////////////////////////////////////////////////////////////////////////
///
/// \brief Called to print a single page (the only page)
///
//////////////////////////////////////////////////////////////////////////////
bool Printout::OnPrintPage(int page)
{
	wxDC *dc = GetDC();
	if (dc)
	{
		int ppiScreenX, ppiScreenY;
		int ppiPrinterX, ppiPrinterY;
		double ppiDCX, ppiDCY;

		int iMarginX;
		int iMarginY;

		int iDrawingWidth;
		int iDrawingHeight;

		// real dimensions of a page
		int pageWidth, pageHeight;
		
		// dimensions we'll use for this
		int iDCWidth, iDCHeight;
		
		double fOldDrawingScale;

		// these will be the same if using the printer
		// but different if previewing

		GetPPIScreen(&ppiScreenX, &ppiScreenY);
		GetPPIPrinter(&ppiPrinterX, &ppiPrinterY);

		dc->GetSize(&iDCWidth, &iDCHeight);
		GetPageSizePixels(&pageWidth, &pageHeight);
		
		ppiDCX = (double) ppiPrinterX * iDCWidth / pageWidth;
		ppiDCY = (double) ppiPrinterY * iDCHeight / pageHeight;

		// one inch margin
				
		iMarginX = (int) (1.0 * ppiDCX);
		iMarginY = (int) (1.0 * ppiDCY);
		
		iDrawingWidth = iDCWidth - 2 * iMarginX;
		iDrawingHeight = iDCHeight - 2 * iMarginY;
		
		dc->SetDeviceOrigin(iMarginX, iMarginY);
		
		dc->SetClippingRegion(0, 0, iDrawingWidth, iDrawingHeight);

		fOldDrawingScale = m_pctlMap->GetDrawingScaleFactor();

		m_pctlMap->SetDrawingScaleFactor(ppiDCX / ppiScreenX);

		m_pctlMap->DrawAll(dc, wxSize(iDrawingWidth, iDrawingHeight), true);

		m_pctlMap->SetDrawingScaleFactor(fOldDrawingScale);
		
		dc->DestroyClippingRegion();

		return TRUE;
	}
	else
		return FALSE;
}

//////////////////////////////////////////////////////////////////////////////
///
/// \brief Indicates if a certain page is present. Currently, there's only one page.
///
//////////////////////////////////////////////////////////////////////////////
bool Printout::HasPage(int page)
{
	if (page == 1)
		return true;
	
	return false;
}

//////////////////////////////////////////////////////////////////////////////
///
/// \brief Returns info about how many pages there are.
///
//////////////////////////////////////////////////////////////////////////////
void Printout::GetPageInfo(int *minPage, int *maxPage, int *selPageFrom, int *selPageTo)
{
    *minPage = 1;
    *maxPage = 1;
    *selPageFrom = 1;
    *selPageTo = 1;
}