text: /////////////////////////////////////////////////////////////////////////////
  // Name:        wx/gtk/print.h
  // Author:      Anthony Bretaudeau
  // Purpose:     GTK printing support
  // Created:     2007-08-25
  // Copyright:   (c) Anthony Bretaudeau
  // Licence:     wxWindows Licence
  /////////////////////////////////////////////////////////////////////////////
  
  #ifndef _WX_GTK_PRINT_H_
  #define _WX_GTK_PRINT_H_
  
  #include "wx/defs.h"
  
  #if wxUSE_GTKPRINT
  
  #include "wx/print.h"
  #include "wx/printdlg.h"
  #include "wx/prntbase.h"
  #include "wx/dc.h"
  
  typedef struct _GtkPrintOperation GtkPrintOperation;
  typedef struct _GtkPrintContext GtkPrintContext;
  typedef struct _GtkPrintSettings GtkPrintSettings;
  typedef struct _GtkPageSetup GtkPageSetup;
  
  typedef struct _cairo cairo_t;
  
  //----------------------------------------------------------------------------
  // wxGtkPrintFactory
  //----------------------------------------------------------------------------
  
  class wxGtkPrintFactory: public wxPrintFactory
  {
  public:
      virtual wxPrinterBase *CreatePrinter( wxPrintDialogData *data ) wxOVERRIDE;
  
      virtual wxPrintPreviewBase *CreatePrintPreview( wxPrintout *preview,
                                                      wxPrintout *printout = NULL,
                                                      wxPrintDialogData *data = NULL ) wxOVERRIDE;
      virtual wxPrintPreviewBase *CreatePrintPreview( wxPrintout *preview,
                                                      wxPrintout *printout,
                                                      wxPrintData *data ) wxOVERRIDE;
  
      virtual wxPrintDialogBase *CreatePrintDialog( wxWindow *parent,
                                                    wxPrintDialogData *data = NULL ) wxOVERRIDE;
      virtual wxPrintDialogBase *CreatePrintDialog( wxWindow *parent,
                                                    wxPrintData *data ) wxOVERRIDE;
  
      virtual wxPageSetupDialogBase *CreatePageSetupDialog( wxWindow *parent,
                                                            wxPageSetupDialogData * data = NULL ) wxOVERRIDE;
  
      virtual wxDCImpl* CreatePrinterDCImpl( wxPrinterDC *owner, const wxPrintData& data ) wxOVERRIDE;
  
      virtual bool HasPrintSetupDialog() wxOVERRIDE;
      virtual wxDialog *CreatePrintSetupDialog( wxWindow *parent, wxPrintData *data ) wxOVERRIDE;
      virtual bool HasOwnPrintToFile() wxOVERRIDE;
      virtual bool HasPrinterLine() wxOVERRIDE;
      virtual wxString CreatePrinterLine() wxOVERRIDE;
      virtual bool HasStatusLine() wxOVERRIDE;
      virtual wxString CreateStatusLine() wxOVERRIDE;
  
      virtual wxPrintNativeDataBase *CreatePrintNativeData() wxOVERRIDE;
  };
  
  //----------------------------------------------------------------------------
  // wxGtkPrintDialog
  //----------------------------------------------------------------------------
  
  class WXDLLIMPEXP_CORE wxGtkPrintDialog: public wxPrintDialogBase
  {
  public:
      wxGtkPrintDialog( wxWindow *parent,
                           wxPrintDialogData* data = NULL );
      wxGtkPrintDialog( wxWindow *parent, wxPrintData* data);
      virtual ~wxGtkPrintDialog();
  
      wxPrintData& GetPrintData() wxOVERRIDE
          { return m_printDialogData.GetPrintData(); }
      wxPrintDialogData& GetPrintDialogData() wxOVERRIDE
          { return m_printDialogData; }
  
      wxDC *GetPrintDC() wxOVERRIDE;
  
      virtual int ShowModal() wxOVERRIDE;
  
      virtual bool Validate() wxOVERRIDE { return true; }
      virtual bool TransferDataToWindow() wxOVERRIDE { return true; }
      virtual bool TransferDataFromWindow() wxOVERRIDE { return true; }
  
      void SetShowDialog(bool show) { m_showDialog = show; }
      bool GetShowDialog() { return m_showDialog; }
  
  protected:
      // Implement some base class methods to do nothing to avoid asserts and
      // GTK warnings, since this is not a real wxDialog.
      virtual void DoSetSize(int WXUNUSED(x), int WXUNUSED(y),
                             int WXUNUSED(width), int WXUNUSED(height),
                             int WXUNUSED(sizeFlags) = wxSIZE_AUTO) wxOVERRIDE {}
      virtual void DoMoveWindow(int WXUNUSED(x), int WXUNUSED(y),
                                int WXUNUSED(width), int WXUNUSED(height)) wxOVERRIDE {}
  
  private:
      wxPrintDialogData    m_printDialogData;
      wxWindow            *m_parent;
      bool                 m_showDialog;
  
      wxDECLARE_DYNAMIC_CLASS(wxGtkPrintDialog);
  };
  
  //----------------------------------------------------------------------------
  // wxGtkPageSetupDialog
  //----------------------------------------------------------------------------
  
  class WXDLLIMPEXP_CORE wxGtkPageSetupDialog: public wxPageSetupDialogBase
  {
  public:
      wxGtkPageSetupDialog( wxWindow *parent,
                              wxPageSetupDialogData* data = NULL );
      virtual ~wxGtkPageSetupDialog();
  
      virtual wxPageSetupDialogData& GetPageSetupDialogData() wxOVERRIDE { return m_pageDialogData; }
  
      virtual int ShowModal() wxOVERRIDE;
  
      virtual bool Validate() wxOVERRIDE { return true; }
      virtual bool TransferDataToWindow() wxOVERRIDE { return true; }
      virtual bool TransferDataFromWindow() wxOVERRIDE { return true; }
  
  protected:
      // Implement some base class methods to do nothing to avoid asserts and
      // GTK warnings, since this is not a real wxDialog.
      virtual void DoSetSize(int WXUNUSED(x), int WXUNUSED(y),
                             int WXUNUSED(width), int WXUNUSED(height),
                             int WXUNUSED(sizeFlags) = wxSIZE_AUTO) wxOVERRIDE {}
      virtual void DoMoveWindow(int WXUNUSED(x), int WXUNUSED(y),
                                int WXUNUSED(width), int WXUNUSED(height)) wxOVERRIDE {}
  
  private:
      wxPageSetupDialogData    m_pageDialogData;
      wxWindow                *m_parent;
  
      wxDECLARE_DYNAMIC_CLASS(wxGtkPageSetupDialog);
  };
  
  //----------------------------------------------------------------------------
  // wxGtkPrinter
  //----------------------------------------------------------------------------
  
  class WXDLLIMPEXP_CORE wxGtkPrinter : public wxPrinterBase
  {
  public:
      wxGtkPrinter(wxPrintDialogData *data = NULL);
      virtual ~wxGtkPrinter();
  
      virtual bool Print(wxWindow *parent,
                         wxPrintout *printout,
                         bool prompt = true) wxOVERRIDE;
      virtual wxDC* PrintDialog(wxWindow *parent) wxOVERRIDE;
      virtual bool Setup(wxWindow *parent) wxOVERRIDE;
  
      GtkPrintContext *GetPrintContext() { return m_gpc; }
      void SetPrintContext(GtkPrintContext *context) {m_gpc = context;}
      void BeginPrint(wxPrintout *printout, GtkPrintOperation *operation, GtkPrintContext *context);
      void DrawPage(wxPrintout *printout, GtkPrintOperation *operation, GtkPrintContext *context, int page_nr);
  
  private:
      GtkPrintContext *m_gpc;
      wxDC            *m_dc;
  
      wxDECLARE_DYNAMIC_CLASS(wxGtkPrinter);
      wxDECLARE_NO_COPY_CLASS(wxGtkPrinter);
  };
  
  //----------------------------------------------------------------------------
  // wxGtkPrintNativeData
  //----------------------------------------------------------------------------
  
  class WXDLLIMPEXP_CORE wxGtkPrintNativeData : public wxPrintNativeDataBase
  {
  public:
      wxGtkPrintNativeData();
      virtual ~wxGtkPrintNativeData();
  
      virtual bool TransferTo( wxPrintData &data ) wxOVERRIDE;
      virtual bool TransferFrom( const wxPrintData &data ) wxOVERRIDE;
  
      virtual bool Ok() const wxOVERRIDE { return IsOk(); }
      virtual bool IsOk() const wxOVERRIDE { return true; }
  
      GtkPrintSettings* GetPrintConfig() { return m_config; }
      void SetPrintConfig( GtkPrintSettings * config );
  
      GtkPrintOperation* GetPrintJob() { return m_job; }
      void SetPrintJob(GtkPrintOperation *job);
  
      GtkPrintContext *GetPrintContext() { return m_context; }
      void SetPrintContext(GtkPrintContext *context) {m_context = context; }
  
  
      GtkPageSetup* GetPageSetupFromSettings(GtkPrintSettings* settings);
      void SetPageSetupToSettings(GtkPrintSettings* settings, GtkPageSetup* page_setup);
  
  private:
      // NB: m_config is created and owned by us, but the other objects are not
      //     and their accessors don't change their ref count.
      GtkPrintSettings    *m_config;
      GtkPrintOperation   *m_job;
      GtkPrintContext     *m_context;
  
      wxDECLARE_DYNAMIC_CLASS(wxGtkPrintNativeData);
  };
  
  //-----------------------------------------------------------------------------
  // wxGtkPrinterDC
  //-----------------------------------------------------------------------------
  
  class WXDLLIMPEXP_CORE wxGtkPrinterDCImpl : public wxDCImpl
  {
  public:
      wxGtkPrinterDCImpl( wxPrinterDC *owner, const wxPrintData& data );
      virtual ~wxGtkPrinterDCImpl();
  
      bool Ok() const { return IsOk(); }
      bool IsOk() const wxOVERRIDE;
  
      virtual void* GetCairoContext() const wxOVERRIDE;
      virtual void* GetHandle() const wxOVERRIDE;
      
      bool CanDrawBitmap() const wxOVERRIDE { return true; }
      void Clear() wxOVERRIDE;
      void SetFont( const wxFont& font ) wxOVERRIDE;
      void SetPen( const wxPen& pen ) wxOVERRIDE;
      void SetBrush( const wxBrush& brush ) wxOVERRIDE;
      void SetLogicalFunction( wxRasterOperationMode function ) wxOVERRIDE;
      void SetBackground( const wxBrush& brush ) wxOVERRIDE;
      void DestroyClippingRegion() wxOVERRIDE;
      bool StartDoc(const wxString& message) wxOVERRIDE;
      void EndDoc() wxOVERRIDE;
      void StartPage() wxOVERRIDE;
      void EndPage() wxOVERRIDE;
      wxCoord GetCharHeight() const wxOVERRIDE;
      wxCoord GetCharWidth() const wxOVERRIDE;
      bool CanGetTextExtent() const wxOVERRIDE { return true; }
      wxSize GetPPI() const wxOVERRIDE;
      virtual int GetDepth() const wxOVERRIDE { return 24; }
      void SetBackgroundMode(int mode) wxOVERRIDE;
      void SetPalette(const wxPalette& WXUNUSED(palette)) wxOVERRIDE { }
      void SetResolution(int ppi);
  
      // overridden for wxPrinterDC Impl
      virtual int GetResolution() const wxOVERRIDE;
      virtual wxRect GetPaperRect() const wxOVERRIDE;
  
  protected:
      bool DoFloodFill(wxCoord x1, wxCoord y1, const wxColour &col,
                       wxFloodFillStyle style=wxFLOOD_SURFACE ) wxOVERRIDE;
      void DoGradientFillConcentric(const wxRect& rect, const wxColour& initialColour, const wxColour& destColour, const wxPoint& circleCenter) wxOVERRIDE;
      void DoGradientFillLinear(const wxRect& rect, const wxColour& initialColour, const wxColour& destColour, wxDirection nDirection = wxEAST) wxOVERRIDE;
      bool DoGetPixel(wxCoord x1, wxCoord y1, wxColour *col) const wxOVERRIDE;
      void DoDrawLine(wxCoord x1, wxCoord y1, wxCoord x2, wxCoord y2) wxOVERRIDE;
      void DoCrossHair(wxCoord x, wxCoord y) wxOVERRIDE;
      void DoDrawArc(wxCoord x1,wxCoord y1,wxCoord x2,wxCoord y2,wxCoord xc,wxCoord yc) wxOVERRIDE;
      void DoDrawEllipticArc(wxCoord x,wxCoord y,wxCoord w,wxCoord h,double sa,double ea) wxOVERRIDE;
      void DoDrawPoint(wxCoord x, wxCoord y) wxOVERRIDE;
      void DoDrawLines(int n, const wxPoint points[], wxCoord xoffset = 0, wxCoord yoffset = 0) wxOVERRIDE;
      void DoDrawPolygon(int n, const wxPoint points[], wxCoord xoffset = 0, wxCoord yoffset = 0, wxPolygonFillMode fillStyle=wxODDEVEN_RULE) wxOVERRIDE;
      void DoDrawPolyPolygon(int n, const int count[], const wxPoint points[], wxCoord xoffset = 0, wxCoord yoffset = 0, wxPolygonFillMode fillStyle=wxODDEVEN_RULE) wxOVERRIDE;
      void DoDrawRectangle(wxCoord x, wxCoord y, wxCoord width, wxCoord height) wxOVERRIDE;
      void DoDrawRoundedRectangle(wxCoord x, wxCoord y, wxCoord width, wxCoord height, double radius = 20.0) wxOVERRIDE;
      void DoDrawEllipse(wxCoord x, wxCoord y, wxCoord width, wxCoord height) wxOVERRIDE;
  #if wxUSE_SPLINES
      void DoDrawSpline(const wxPointList *points) wxOVERRIDE;
  #endif
      bool DoBlit(wxCoord xdest, wxCoord ydest, wxCoord width, wxCoord height,
              wxDC *source, wxCoord xsrc, wxCoord ysrc,
              wxRasterOperationMode rop = wxCOPY, bool useMask = false,
              wxCoord xsrcMask = wxDefaultCoord, wxCoord ysrcMask = wxDefaultCoord) wxOVERRIDE;
      void DoDrawIcon( const wxIcon& icon, wxCoord x, wxCoord y ) wxOVERRIDE;
      void DoDrawBitmap( const wxBitmap& bitmap, wxCoord x, wxCoord y, bool useMask = false  ) wxOVERRIDE;
      void DoDrawText(const wxString& text, wxCoord x, wxCoord y ) wxOVERRIDE;
      void DoDrawRotatedText(const wxString& text, wxCoord x, wxCoord y, double angle) wxOVERRIDE;
      void DoSetClippingRegion(wxCoord x, wxCoord y, wxCoord width, wxCoord height) wxOVERRIDE;
      void DoSetDeviceClippingRegion( const wxRegion &WXUNUSED(clip) ) wxOVERRIDE
      {
          wxFAIL_MSG( "not implemented" );
      }
      void DoGetTextExtent(const wxString& string, wxCoord *x, wxCoord *y,
                       wxCoord *descent = NULL,
                       wxCoord *externalLeading = NULL,
                       const wxFont *theFont = NULL ) const wxOVERRIDE;
      bool DoGetPartialTextExtents(const wxString& text, wxArrayInt& widths) const wxOVERRIDE;
      void DoGetSize(int* width, int* height) const wxOVERRIDE;
      void DoGetSizeMM(int *width, int *height) const wxOVERRIDE;
  
      wxPrintData& GetPrintData() { return m_printData; }
      void SetPrintData(const wxPrintData& data);
  
  private:
      wxPrintData             m_printData;
      PangoContext           *m_context;
      PangoLayout            *m_layout;
      PangoFontDescription   *m_fontdesc;
      cairo_t                *m_cairo;
  
      unsigned char           m_currentRed;
      unsigned char           m_currentGreen;
      unsigned char           m_currentBlue;
      unsigned char           m_currentAlpha;
  
      GtkPrintContext        *m_gpc;
      int                     m_resolution;
      double                  m_PS2DEV;
      double                  m_DEV2PS;
  
      wxDECLARE_DYNAMIC_CLASS(wxGtkPrinterDCImpl);
      wxDECLARE_NO_COPY_CLASS(wxGtkPrinterDCImpl);
  };
  
  // ----------------------------------------------------------------------------
  // wxGtkPrintPreview: programmer creates an object of this class to preview a
  // wxPrintout.
  // ----------------------------------------------------------------------------
  
  class WXDLLIMPEXP_CORE wxGtkPrintPreview : public wxPrintPreviewBase
  {
  public:
      wxGtkPrintPreview(wxPrintout *printout,
                               wxPrintout *printoutForPrinting = NULL,
                               wxPrintDialogData *data = NULL);
      wxGtkPrintPreview(wxPrintout *printout,
                               wxPrintout *printoutForPrinting,
                               wxPrintData *data);
  
      virtual ~wxGtkPrintPreview();
  
      virtual bool Print(bool interactive) wxOVERRIDE;
      virtual void DetermineScaling() wxOVERRIDE;
  
  private:
      void Init(wxPrintout *printout,
                wxPrintout *printoutForPrinting,
                wxPrintData *data);
  
      // resolution to use in DPI
      int m_resolution;
  
      wxDECLARE_CLASS(wxGtkPrintPreview);
  };
  
  #endif // wxUSE_GTKPRINT
  
  #endif // _WX_GTK_PRINT_H_
  