include/wx/html/htmprint.h

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        htmprint.h
   3 // Purpose:     html printing classes
   4 // Author:      Vaclav Slavik
   5 // Created:     25/09/99
   6 // RCS-ID:      $Id$
   7 // Copyright:   (c)
   8 // Licence:     wxWindows licence
   9 /////////////////////////////////////////////////////////////////////////////
  10
  11 #ifndef _WX_HTMPRINT_H_
  12 #define _WX_HTMPRINT_H_
  13
  14 #ifdef __GNUG__
  15 #pragma interface
  16 #endif
  17
  18 #include <wx/defs.h>
  19
  20 #if wxUSE_HTML & wxUSE_PRINTING_ARCHITECTURE
  21
  22 #include "wx/html/htmlcell.h"
  23 #include "wx/html/winpars.h"
  24
  25 #include "wx/print.h"
  26 #include "wx/printdlg.h"
  27
  28 //--------------------------------------------------------------------------------
  29 // wxHtmlDCRenderer
  30 //                  This class is capable of rendering HTML into specified
  31 //                  portion of DC
  32 //--------------------------------------------------------------------------------
  33
  34 class WXDLLEXPORT wxHtmlDCRenderer : public wxObject
  35 {
  36     public:
  37         wxHtmlDCRenderer();
  38         ~wxHtmlDCRenderer();
  39
  40         // Following 3 methods *must* be called before any call to Render:
  41         void SetDC(wxDC *dc, double pixel_scale = 1.0);
  42                 // asign DC to this render
  43         void SetSize(int width, int height);
  44                 // sets size of output rectangle, in pixels. Note that you *can't* change
  45                 // width of the rectangle between calls to Render! (You can freely change height.)
  46         void SetHtmlText(const wxString& html, const wxString& basepath = wxEmptyString, bool isdir = TRUE);
  47                 // sets the text to be displayed
  48                 //
  49                 // basepath is base directory (html string would be stored there if it was in
  50                 // file). It is used to determine path for loading images, for example.
  51                 // isdir is FALSE if basepath is filename, TRUE if it is directory name
  52                 // (see wxFileSystem for detailed explanation)
  53
  54         int Render(int x, int y, int from = 0, int dont_render = FALSE);
  55                 // [x,y] is position of upper-left corner of printing rectangle (see SetSize)
  56                 // from is y-coordinate of the very first visible cell
  57                 // Returned value is y coordinate of first cell than didn't fit onto page.
  58                 // Use this value as 'from' in next call to Render in order to print multiple pages
  59                 // document
  60                 // If dont_render is TRUE then nothing is rendered into DC and it only counts
  61                 // pixels and return y coord of the next page
  62                 //
  63                 // CAUTION! Render() changes DC's user scale and does NOT restore it!
  64
  65         int GetTotalHeight();
  66                 // returns total height of the html document
  67                 // (compare Render's return value with this)
  68
  69     private:
  70
  71         wxDC *m_DC;
  72         wxHtmlWinParser *m_Parser;
  73         wxFileSystem *m_FS;
  74         wxHtmlContainerCell *m_Cells;
  75         int m_MaxWidth, m_Width, m_Height;
  76 };
  77
  78
  79
  80
  81
  82 enum {
  83     wxPAGE_ODD,
  84     wxPAGE_EVEN,
  85     wxPAGE_ALL
  86 };
  87
  88
  89
  90 //--------------------------------------------------------------------------------
  91 // wxHtmlPrintout
  92 //                  This class is derived from standard wxWindows printout class
  93 //                  and is used to print HTML documents.
  94 //--------------------------------------------------------------------------------
  95
  96
  97 class WXDLLEXPORT wxHtmlPrintout : public wxPrintout
  98 {
  99     public:
 100         wxHtmlPrintout(const wxString& title = "Printout");
 101         ~wxHtmlPrintout();
 102
 103         void SetHtmlText(const wxString& html, const wxString &basepath = wxEmptyString, bool isdir = TRUE);
 104                 // prepares the class for printing this html document.
 105                 // Must be called before using the class, in fact just after constructor
 106                 //
 107                 // basepath is base directory (html string would be stored there if it was in
 108                 // file). It is used to determine path for loading images, for example.
 109                 // isdir is FALSE if basepath is filename, TRUE if it is directory name
 110                 // (see wxFileSystem for detailed explanation)
 111
 112         void SetHtmlFile(const wxString &htmlfile);
 113                 // same as SetHtmlText except that it takes regular file as the parameter
 114
 115         void SetHeader(const wxString& header, int pg = wxPAGE_ALL);
 116         void SetFooter(const wxString& footer, int pg = wxPAGE_ALL);
 117                 // sets header/footer for the document. The argument is interpreted as HTML document.
 118                 // You can use macros in it:
 119                 //   @PAGENUM@ is replaced by page number
 120                 //   @PAGESCNT@ is replaced by total number of pages
 121                 //
 122                 // pg is one of wxPAGE_ODD, wxPAGE_EVEN and wx_PAGE_ALL constants.
 123                 // You can set different header/footer for odd and even pages
 124
 125         void SetMargins(float top = 25.2, float bottom = 25.2, float left = 25.2, float right = 25.2,
 126                         float spaces = 5);
 127                 // sets margins in milimeters. Defaults to 1 inch for margins and 0.5cm for space
 128                 // between text and header and/or footer
 129
 130         // wxPrintout stuff:
 131         bool OnPrintPage(int page);
 132         bool HasPage(int page);
 133         void GetPageInfo(int *minPage, int *maxPage, int *selPageFrom, int *selPageTo);
 134         bool OnBeginDocument(int startPage, int endPage);
 135
 136     private:
 137
 138         void RenderPage(wxDC *dc, int page);
 139                 // renders one page into dc
 140         wxString TranslateHeader(const wxString& instr, int page);
 141                 // substitute @PAGENUM@ and @PAGESCNT@ by real values
 142         void CountPages();
 143                 // counts pages and fills m_NumPages and m_PageBreaks
 144
 145
 146     private:
 147         int m_NumPages;
 148         int m_PageBreaks[wxHTML_PRINT_MAX_PAGES];
 149
 150         wxString m_Document, m_BasePath;
 151         bool m_BasePathIsDir;
 152         wxString m_Headers[2], m_Footers[2];
 153
 154         int m_HeaderHeight, m_FooterHeight;
 155         wxHtmlDCRenderer *m_Renderer, *m_RendererHdr;
 156         float m_MarginTop, m_MarginBottom, m_MarginLeft, m_MarginRight, m_MarginSpace;
 157 };
 158
 159
 160
 161
 162
 163 //--------------------------------------------------------------------------------
 164 // wxHtmlEasyPrinting
 165 //                  This class provides very simple interface to printing
 166 //                  architecture. It allows you to print HTML documents only
 167 //                  with very few commands.
 168 //
 169 //                  Note : do not create this class on stack only.
 170 //                         You should create an instance on app startup and
 171 //                         use this instance for all printing. Why? The class
 172 //                         stores page&printer settings in it.
 173 //--------------------------------------------------------------------------------
 174
 175 class WXDLLEXPORT wxHtmlEasyPrinting : public wxObject
 176 {
 177     public:
 178
 179         wxHtmlEasyPrinting(const wxString& name = "Printing", wxFrame *parent_frame = NULL);
 180         ~wxHtmlEasyPrinting();
 181
 182         bool PreviewFile(const wxString &htmlfile);
 183         bool PreviewText(const wxString &htmltext, const wxString& basepath = wxEmptyString);
 184                 // Preview file / html-text for printing
 185                 // (and offers printing)
 186                 // basepath is base directory for opening subsequent files (e.g. from <img> tag)
 187
 188         bool PrintFile(const wxString &htmlfile);
 189         bool PrintText(const wxString &htmltext, const wxString& basepath = wxEmptyString);
 190                 // Print file / html-text w/o preview
 191
 192         void PrinterSetup();
 193         void PageSetup();
 194                 // pop up printer or page setup dialog
 195
 196         void SetHeader(const wxString& header, int pg = wxPAGE_ALL);
 197         void SetFooter(const wxString& footer, int pg = wxPAGE_ALL);
 198                 // sets header/footer for the document. The argument is interpreted as HTML document.
 199                 // You can use macros in it:
 200                 //   @PAGENUM@ is replaced by page number
 201                 //   @PAGESCNT@ is replaced by total number of pages
 202                 //
 203                 // pg is one of wxPAGE_ODD, wxPAGE_EVEN and wx_PAGE_ALL constants.
 204                 // You can set different header/footer for odd and even pages
 205
 206         wxPrintData *GetPrintData() {return m_PrintData;}
 207         wxPageSetupDialogData *GetPageSetupData() {return m_PageSetupData;}
 208                 // return page setting data objects.
 209                 // (You can set their parameters.)
 210
 211     private:
 212
 213         wxHtmlPrintout *CreatePrintout();
 214         bool DoPreview(wxHtmlPrintout *printout1, wxHtmlPrintout *printout2);
 215         bool DoPrint(wxHtmlPrintout *printout);
 216
 217         wxPrintData *m_PrintData;
 218         wxPageSetupDialogData *m_PageSetupData;
 219         wxString m_Name;
 220         wxString m_Headers[2], m_Footers[2];
 221         wxFrame *m_Frame;
 222 };
 223
 224
 225
 226
 227 #endif  // wxUSE_HTML & wxUSE_PRINTING_ARCHITECTURE
 228
 229 #endif // _WX_HTMPRINT_H_
 230