prntbase.h

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/////////////////////////////////////////////////////////////////////////////
// Name:        prntbase.h
// Purpose:     Base classes for printing framework
// Author:      Julian Smart
// Modified by:
// Created:     01/02/97
// RCS-ID:      $Id: prntbase.h,v 1.45 2005/07/28 22:20:05 VZ Exp $
// Copyright:   (c) Julian Smart
// Licence:     wxWindows licence
/////////////////////////////////////////////////////////////////////////////

#ifndef _WX_PRNTBASEH__
#define _WX_PRNTBASEH__

#if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
    #pragma interface "prntbase.h"
#endif

#include "wx/defs.h"

#if wxUSE_PRINTING_ARCHITECTURE

#include "wx/event.h"
#include "wx/cmndata.h"
#include "wx/panel.h"
#include "wx/scrolwin.h"
#include "wx/dialog.h"
#include "wx/frame.h"

class WXDLLEXPORT wxDC;
class WXDLLEXPORT wxButton;
class WXDLLEXPORT wxChoice;
class WXDLLEXPORT wxPrintout;
class WXDLLEXPORT wxPrinterBase;
class WXDLLEXPORT wxPrintDialogBase;
class WXDLLEXPORT wxPrintDialog;
class WXDLLEXPORT wxPageSetupDialogBase;
class WXDLLEXPORT wxPageSetupDialog;
class WXDLLEXPORT wxPrintPreviewBase;
class WXDLLEXPORT wxPreviewCanvas;
class WXDLLEXPORT wxPreviewControlBar;
class WXDLLEXPORT wxPreviewFrame;
class WXDLLEXPORT wxPrintFactory;
class WXDLLEXPORT wxPrintNativeDataBase;

//----------------------------------------------------------------------------
// error consts
//----------------------------------------------------------------------------

enum wxPrinterError
{
    wxPRINTER_NO_ERROR = 0,
    wxPRINTER_CANCELLED,
    wxPRINTER_ERROR
};

//----------------------------------------------------------------------------
// wxPrintFactory
//----------------------------------------------------------------------------

class WXDLLEXPORT wxPrintFactory
{
public:
    wxPrintFactory() {}
    virtual ~wxPrintFactory() {}

    virtual wxPrinterBase *CreatePrinter( wxPrintDialogData* data ) = 0;

    virtual wxPrintPreviewBase *CreatePrintPreview( wxPrintout *preview,
                                                    wxPrintout *printout = NULL,
                                                    wxPrintDialogData *data = NULL ) = 0;
    virtual wxPrintPreviewBase *CreatePrintPreview( wxPrintout *preview,
                                                    wxPrintout *printout,
                                                    wxPrintData *data ) = 0;

    virtual wxPrintDialogBase *CreatePrintDialog( wxWindow *parent,
                                                  wxPrintDialogData *data = NULL ) = 0;
    virtual wxPrintDialogBase *CreatePrintDialog( wxWindow *parent,
                                                  wxPrintData *data ) = 0;

    virtual wxPageSetupDialogBase *CreatePageSetupDialog( wxWindow *parent,
                                                          wxPageSetupDialogData * data = NULL ) = 0;

    // What to do and what to show in the wxPrintDialog
    // a) Use the generic print setup dialog or a native one?
    virtual bool HasPrintSetupDialog() = 0;
    virtual wxDialog *CreatePrintSetupDialog( wxWindow *parent, wxPrintData *data ) = 0;
    // b) Provide the "print to file" option ourselves or via print setup?
    virtual bool HasOwnPrintToFile() = 0;
    // c) Show current printer
    virtual bool HasPrinterLine() = 0;
    virtual wxString CreatePrinterLine() = 0;
    // d) Show Status line for current printer?
    virtual bool HasStatusLine() = 0;
    virtual wxString CreateStatusLine() = 0;


    virtual wxPrintNativeDataBase *CreatePrintNativeData() = 0;

    static void SetPrintFactory( wxPrintFactory *factory );
    static wxPrintFactory *GetFactory();
    static wxPrintFactory *m_factory;
};

class WXDLLEXPORT wxNativePrintFactory: public wxPrintFactory
{
public:
    virtual wxPrinterBase *CreatePrinter( wxPrintDialogData *data );

    virtual wxPrintPreviewBase *CreatePrintPreview( wxPrintout *preview,
                                                    wxPrintout *printout = NULL,
                                                    wxPrintDialogData *data = NULL );
    virtual wxPrintPreviewBase *CreatePrintPreview( wxPrintout *preview,
                                                    wxPrintout *printout,
                                                    wxPrintData *data );

    virtual wxPrintDialogBase *CreatePrintDialog( wxWindow *parent,
                                                  wxPrintDialogData *data = NULL );
    virtual wxPrintDialogBase *CreatePrintDialog( wxWindow *parent,
                                                  wxPrintData *data );

    virtual wxPageSetupDialogBase *CreatePageSetupDialog( wxWindow *parent,
                                                          wxPageSetupDialogData * data = NULL );

    virtual bool HasPrintSetupDialog();
    virtual wxDialog *CreatePrintSetupDialog( wxWindow *parent, wxPrintData *data );
    virtual bool HasOwnPrintToFile();
    virtual bool HasPrinterLine();
    virtual wxString CreatePrinterLine();
    virtual bool HasStatusLine();
    virtual wxString CreateStatusLine();

    virtual wxPrintNativeDataBase *CreatePrintNativeData();
};

//----------------------------------------------------------------------------
// wxPrintNativeDataBase
//----------------------------------------------------------------------------

class WXDLLEXPORT wxPrintNativeDataBase: public wxObject
{
public:
    wxPrintNativeDataBase();
    virtual ~wxPrintNativeDataBase() {}

    virtual bool TransferTo( wxPrintData &data ) = 0;
    virtual bool TransferFrom( const wxPrintData &data ) = 0;

    virtual bool Ok() const = 0;

    int  m_ref;

private:
    DECLARE_CLASS(wxPrintNativeDataBase)
    DECLARE_NO_COPY_CLASS(wxPrintNativeDataBase)
};

//----------------------------------------------------------------------------
// wxPrinterBase
//----------------------------------------------------------------------------

/*
 * Represents the printer: manages printing a wxPrintout object
 */

class WXDLLEXPORT wxPrinterBase: public wxObject
{
public:
    wxPrinterBase(wxPrintDialogData *data = (wxPrintDialogData *) NULL);
    virtual ~wxPrinterBase();

    virtual wxWindow *CreateAbortWindow(wxWindow *parent, wxPrintout *printout);
    virtual void ReportError(wxWindow *parent, wxPrintout *printout, const wxString& message);

    virtual wxPrintDialogData& GetPrintDialogData() const;
    bool GetAbort() const { return sm_abortIt; }

    static wxPrinterError GetLastError() { return sm_lastError; }

    ///////////////////////////////////////////////////////////////////////////
    // OVERRIDES

    virtual bool Setup(wxWindow *parent) = 0;
    virtual bool Print(wxWindow *parent, wxPrintout *printout, bool prompt = true) = 0;
    virtual wxDC* PrintDialog(wxWindow *parent) = 0;

protected:
    wxPrintDialogData     m_printDialogData;
    wxPrintout*           m_currentPrintout;

    static wxPrinterError sm_lastError;

public:
    static wxWindow*      sm_abortWindow;
    static bool           sm_abortIt;

private:
    DECLARE_CLASS(wxPrinterBase)
    DECLARE_NO_COPY_CLASS(wxPrinterBase)
};

//----------------------------------------------------------------------------
// wxPrinter
//----------------------------------------------------------------------------

class WXDLLEXPORT wxPrinter: public wxPrinterBase
{
public:
    wxPrinter(wxPrintDialogData *data = (wxPrintDialogData *) NULL);
    virtual ~wxPrinter();

    virtual wxWindow *CreateAbortWindow(wxWindow *parent, wxPrintout *printout);
    virtual void ReportError(wxWindow *parent, wxPrintout *printout, const wxString& message);

    virtual bool Setup(wxWindow *parent);
    virtual bool Print(wxWindow *parent, wxPrintout *printout, bool prompt = true);
    virtual wxDC* PrintDialog(wxWindow *parent);

    virtual wxPrintDialogData& GetPrintDialogData() const;

protected:
    wxPrinterBase    *m_pimpl;

private:
    DECLARE_CLASS(wxPrinter)
    DECLARE_NO_COPY_CLASS(wxPrinter)
};

//----------------------------------------------------------------------------
// wxPrintout
//----------------------------------------------------------------------------

/*
 * Represents an object via which a document may be printed.
 * The programmer derives from this, overrides (at least) OnPrintPage,
 * and passes it to a wxPrinter object for printing, or a wxPrintPreview
 * object for previewing.
 */

class WXDLLEXPORT wxPrintout: public wxObject
{
public:
    wxPrintout(const wxString& title = wxT("Printout"));
    virtual ~wxPrintout();

    virtual bool OnBeginDocument(int startPage, int endPage);
    virtual void OnEndDocument();
    virtual void OnBeginPrinting();
    virtual void OnEndPrinting();

    // Guaranteed to be before any other functions are called
    virtual void OnPreparePrinting() { }

    virtual bool HasPage(int page);
    virtual bool OnPrintPage(int page) = 0;
    virtual void GetPageInfo(int *minPage, int *maxPage, int *pageFrom, int *pageTo);

    virtual wxString GetTitle() const { return m_printoutTitle; }

    wxDC *GetDC() const { return m_printoutDC; }
    void SetDC(wxDC *dc) { m_printoutDC = dc; }
    void SetPageSizePixels(int w, int  h) { m_pageWidthPixels = w; m_pageHeightPixels = h; }
    void GetPageSizePixels(int *w, int  *h) const { *w = m_pageWidthPixels; *h = m_pageHeightPixels; }
    void SetPageSizeMM(int w, int  h) { m_pageWidthMM = w; m_pageHeightMM = h; }
    void GetPageSizeMM(int *w, int  *h) const { *w = m_pageWidthMM; *h = m_pageHeightMM; }

    void SetPPIScreen(int x, int y) { m_PPIScreenX = x; m_PPIScreenY = y; }
    void GetPPIScreen(int *x, int *y) const { *x = m_PPIScreenX; *y = m_PPIScreenY; }
    void SetPPIPrinter(int x, int y) { m_PPIPrinterX = x; m_PPIPrinterY = y; }
    void GetPPIPrinter(int *x, int *y) const { *x = m_PPIPrinterX; *y = m_PPIPrinterY; }

    virtual bool IsPreview() const { return m_isPreview; }

    virtual void SetIsPreview(bool p) { m_isPreview = p; }

private:
    wxString         m_printoutTitle;
    wxDC*            m_printoutDC;

    int              m_pageWidthPixels;
    int              m_pageHeightPixels;

    int              m_pageWidthMM;
    int              m_pageHeightMM;

    int              m_PPIScreenX;
    int              m_PPIScreenY;
    int              m_PPIPrinterX;
    int              m_PPIPrinterY;

    bool             m_isPreview;

private:
    DECLARE_ABSTRACT_CLASS(wxPrintout)
    DECLARE_NO_COPY_CLASS(wxPrintout)
};

/*
 * wxPreviewCanvas
 * Canvas upon which a preview is drawn.
 */

class WXDLLEXPORT wxPreviewCanvas: public wxScrolledWindow
{
public:
    wxPreviewCanvas(wxPrintPreviewBase *preview,
                    wxWindow *parent,
                    const wxPoint& pos = wxDefaultPosition,
                    const wxSize& size = wxDefaultSize,
                    long style = 0,
                    const wxString& name = wxT("canvas"));