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 "htmprint.h"
  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
  42     // Asign DC to this render
  43     void SetDC(wxDC *dc, double pixel_scale = 1.0);
  44
  45     // Sets size of output rectangle, in pixels. Note that you *can't* change
  46     // width of the rectangle between calls to Render! (You can freely change height.)
  47     void SetSize(int width, int height);
  48
  49     // Sets the text to be displayed.
  50     // Basepath is base directory (html string would be stored there if it was in
  51     // file). It is used to determine path for loading images, for example.
  52     // isdir is FALSE if basepath is filename, TRUE if it is directory name
  53     // (see wxFileSystem for detailed explanation)
  54     void SetHtmlText(const wxString& html, const wxString& basepath = wxEmptyString, bool isdir = TRUE);
  55
  56     // [x,y] is position of upper-left corner of printing rectangle (see SetSize)
  57     // from is y-coordinate of the very first visible cell
  58     // Returned value is y coordinate of first cell than didn't fit onto page.
  59     // Use this value as 'from' in next call to Render in order to print multiple pages
  60     // document
  61     // If dont_render is TRUE then nothing is rendered into DC and it only counts
  62     // pixels and return y coord of the next page
  63     //
  64     // CAUTION! Render() changes DC's user scale and does NOT restore it!
  65     int Render(int x, int y, int from = 0, int dont_render = FALSE);
  66
  67     // returns total height of the html document
  68     // (compare Render's return value with this)
  69     int GetTotalHeight();
  70
  71 private:
  72     wxDC *m_DC;
  73     wxHtmlWinParser *m_Parser;
  74     wxFileSystem *m_FS;
  75     wxHtmlContainerCell *m_Cells;
  76     int m_MaxWidth, m_Width, m_Height;
  77 };
  78
  79
  80
  81
  82
  83 enum {
  84     wxPAGE_ODD,
  85     wxPAGE_EVEN,
  86     wxPAGE_ALL
  87 };
  88
  89
  90
  91 //--------------------------------------------------------------------------------
  92 // wxHtmlPrintout
  93 //                  This class is derived from standard wxWindows printout class
  94 //                  and is used to print HTML documents.
  95 //--------------------------------------------------------------------------------
  96
  97
  98 class WXDLLEXPORT wxHtmlPrintout : public wxPrintout
  99 {
 100     public:
 101         wxHtmlPrintout(const wxString& title = "Printout");
 102         ~wxHtmlPrintout();
 103
 104         void SetHtmlText(const wxString& html, const wxString &basepath = wxEmptyString, bool isdir = TRUE);
 105                 // prepares the class for printing this html document.
 106                 // Must be called before using the class, in fact just after constructor
 107                 //
 108                 // basepath is base directory (html string would be stored there if it was in
 109                 // file). It is used to determine path for loading images, for example.
 110                 // isdir is FALSE if basepath is filename, TRUE if it is directory name
 111                 // (see wxFileSystem for detailed explanation)
 112
 113         void SetHtmlFile(const wxString &htmlfile);
 114                 // same as SetHtmlText except that it takes regular file as the parameter
 115
 116         void SetHeader(const wxString& header, int pg = wxPAGE_ALL);
 117         void SetFooter(const wxString& footer, int pg = wxPAGE_ALL);
 118                 // sets header/footer for the document. The argument is interpreted as HTML document.
 119                 // You can use macros in it:
 120                 //   @PAGENUM@ is replaced by page number
 121                 //   @PAGESCNT@ is replaced by total number of pages
 122                 //
 123                 // pg is one of wxPAGE_ODD, wxPAGE_EVEN and wx_PAGE_ALL constants.
 124                 // You can set different header/footer for odd and even pages
 125
 126         void SetMargins(float top = 25.2, float bottom = 25.2, float left = 25.2, float right = 25.2,
 127                         float spaces = 5);
 128                 // sets margins in milimeters. Defaults to 1 inch for margins and 0.5cm for space
 129                 // between text and header and/or footer
 130
 131         // wxPrintout stuff:
 132         bool OnPrintPage(int page);
 133         bool HasPage(int page);
 134         void GetPageInfo(int *minPage, int *maxPage, int *selPageFrom, int *selPageTo);
 135         bool OnBeginDocument(int startPage, int endPage);
 136
 137     private:
 138
 139         void RenderPage(wxDC *dc, int page);
 140                 // renders one page into dc
 141         wxString TranslateHeader(const wxString& instr, int page);
 142                 // substitute @PAGENUM@ and @PAGESCNT@ by real values
 143         void CountPages();
 144                 // counts pages and fills m_NumPages and m_PageBreaks
 145
 146
 147     private:
 148         int m_NumPages;
 149         int m_PageBreaks[wxHTML_PRINT_MAX_PAGES];
 150
 151         wxString m_Document, m_BasePath;
 152         bool m_BasePathIsDir;
 153         wxString m_Headers[2], m_Footers[2];
 154
 155         int m_HeaderHeight, m_FooterHeight;
 156         wxHtmlDCRenderer *m_Renderer, *m_RendererHdr;
 157         float m_MarginTop, m_MarginBottom, m_MarginLeft, m_MarginRight, m_MarginSpace;
 158 };
 159
 160
 161
 162
 163
 164 //--------------------------------------------------------------------------------
 165 // wxHtmlEasyPrinting
 166 //                  This class provides very simple interface to printing
 167 //                  architecture. It allows you to print HTML documents only
 168 //                  with very few commands.
 169 //
 170 //                  Note : do not create this class on stack only.
 171 //                         You should create an instance on app startup and
 172 //                         use this instance for all printing. Why? The class
 173 //                         stores page&printer settings in it.
 174 //--------------------------------------------------------------------------------
 175
 176 class WXDLLEXPORT wxHtmlEasyPrinting : public wxObject
 177 {
 178     public:
 179
 180         wxHtmlEasyPrinting(const wxString& name = "Printing", wxFrame *parent_frame = NULL);
 181         ~wxHtmlEasyPrinting();
 182
 183         bool PreviewFile(const wxString &htmlfile);
 184         bool PreviewText(const wxString &htmltext, const wxString& basepath = wxEmptyString);
 185                 // Preview file / html-text for printing
 186                 // (and offers printing)
 187                 // basepath is base directory for opening subsequent files (e.g. from <img> tag)
 188
 189         bool PrintFile(const wxString &htmlfile);
 190         bool PrintText(const wxString &htmltext, const wxString& basepath = wxEmptyString);
 191                 // Print file / html-text w/o preview
 192
 193         void PrinterSetup();
 194         void PageSetup();
 195                 // pop up printer or page setup dialog
 196
 197         void SetHeader(const wxString& header, int pg = wxPAGE_ALL);
 198         void SetFooter(const wxString& footer, int pg = wxPAGE_ALL);
 199                 // sets header/footer for the document. The argument is interpreted as HTML document.
 200                 // You can use macros in it:
 201                 //   @PAGENUM@ is replaced by page number
 202                 //   @PAGESCNT@ is replaced by total number of pages
 203                 //
 204                 // pg is one of wxPAGE_ODD, wxPAGE_EVEN and wx_PAGE_ALL constants.
 205                 // You can set different header/footer for odd and even pages
 206
 207         wxPrintData *GetPrintData() {return m_PrintData;}
 208         wxPageSetupDialogData *GetPageSetupData() {return m_PageSetupData;}
 209                 // return page setting data objects.
 210                 // (You can set their parameters.)
 211
 212     private:
 213
 214         wxHtmlPrintout *CreatePrintout();
 215         bool DoPreview(wxHtmlPrintout *printout1, wxHtmlPrintout *printout2);
 216         bool DoPrint(wxHtmlPrintout *printout);
 217
 218         wxPrintData *m_PrintData;
 219         wxPageSetupDialogData *m_PageSetupData;
 220         wxString m_Name;
 221         wxString m_Headers[2], m_Footers[2];
 222         wxFrame *m_Frame;
 223 };
 224
 225
 226
 227
 228 #endif  // wxUSE_HTML & wxUSE_PRINTING_ARCHITECTURE
 229
 230 #endif // _WX_HTMPRINT_H_
 231