prdatasource.h

来自「虚拟打印机」· C头文件 代码 · 共 65 行

/*
 *
 * prdatasource.h
 *
   Copyright (C) 2006 Michael H. Overlin

   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation; either version 2 of the License, or
   (at your option) any later version.

   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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
   
   Contact at [e-mail]
 *
 */

#ifndef PRDATASOURCE_H
#define PRDATASOURCE_H

#include "printResizerCommon.h"
#include "types.h"

struct RenderSpec;
struct PageSpec;
struct SourceSpec;

class PRDataSource {
public:
	virtual ~PRDataSource() {} // ADDED TO BE SURE DERIVED CLASSES DESTRUCTOR IS PROPERLY CALLED
							   // FORCES ALL DESTRUCTORS TO BE VIRTUAL

	virtual ::PrintPreviewDataSource GetDataSourceType(void) const = 0;

	virtual BOOL Open(const tstring& tstrFileName) = 0;
	virtual void Close(void) = 0;
	virtual BOOL IsOpen(void) const = 0;

	virtual BOOL GetAutoRotate(IN uint uiPage, OUT BOOL& bAutoRotate) const = 0;
	virtual BOOL GetEvenPageMargins(IN uint uiPage, OUT BOOL& bEvenPageMargins) const = 0;
	virtual const tstring & GetJobName(void) const = 0;
	virtual BOOL GetLandscape(IN uint uiPage, OUT BOOL& bLandscape) const = 0;
	//virtual BOOL GetNoCutGuidelines(IN uint uiPage, OUT BOOL& bNoCutGuidelines) const = 0;
	virtual uint GetPageCount(void) const = 0;
	// CALLER IS RESPONSIBLE FOR DELETING RETURNED HANDLE
	virtual HENHMETAFILE GetPageEMF(uint uiPage) const = 0;
	// NOTE PREVIEWDIALOG CODE CAN DEAL WITH A FALSE (FAILURE) RETURN
	virtual BOOL GetResizedRenderSpec(IN uint uiPage, OUT ::RenderSpec& rsResized) const = 0;
	// NOTE PREVIEWDIALOG CODE CAN DEAL WITH A FALSE (FAILURE) RETURN
	virtual BOOL GetResizedSourceSpec(IN uint uiPage, OUT ::SourceSpec& ssResized) const = 0;
	// NOTE PREVIEWDIALOG CODE CAN DEAL WITH A FALSE (FAILURE) RETURN
	virtual BOOL GetSourcePageSpec(IN uint uiPage, OUT ::PageSpec& ps) const = 0;
	// NOTE PREVIEWDIALOG CODE CAN DEAL WITH A NULL (FAILURE) RETURN
	// CALLER IS RESPONSIBLE FOR FREEING RETURNED MALLOC'D BUFFER
	virtual PDEVMODE GetTargetPrinter(IN uint uiPage, OUT tstring& tstrTargetPrinterName) const = 0;
};

#endif