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 #if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
  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 #include "wx/html/htmlfilt.h"
  25
  26 #include "wx/print.h"
  27 #include "wx/printdlg.h"
  28
  29 #include <limits.h> // INT_MAX
  30
  31 //--------------------------------------------------------------------------------
  32 // wxHtmlDCRenderer
  33 //                  This class is capable of rendering HTML into specified
  34 //                  portion of DC
  35 //--------------------------------------------------------------------------------
  36
  37 class WXDLLIMPEXP_HTML wxHtmlDCRenderer : public wxObject
  38 {
  39 public:
  40     wxHtmlDCRenderer();
  41     ~wxHtmlDCRenderer();
  42
  43     // Following 3 methods *must* be called before any call to Render:
  44
  45     // Assign DC to this render
  46     void SetDC(wxDC *dc, double pixel_scale = 1.0);
  47
  48     // Sets size of output rectangle, in pixels. Note that you *can't* change
  49     // width of the rectangle between calls to Render! (You can freely change height.)
  50     void SetSize(int width, int height);
  51
  52     // Sets the text to be displayed.
  53     // Basepath is base directory (html string would be stored there if it was in
  54     // file). It is used to determine path for loading images, for example.
  55     // isdir is FALSE if basepath is filename, TRUE if it is directory name
  56     // (see wxFileSystem for detailed explanation)
  57     void SetHtmlText(const wxString& html, const wxString& basepath = wxEmptyString, bool isdir = TRUE);
  58
  59     // Sets fonts to be used when displaying HTML page. (if size null then default sizes used).
  60     void SetFonts(wxString normal_face, wxString fixed_face, const int *sizes = NULL);
  61
  62     // [x,y] is position of upper-left corner of printing rectangle (see SetSize)
  63     // from is y-coordinate of the very first visible cell
  64     // to is y-coordinate of the next following page break, if any
  65     // Returned value is y coordinate of first cell than didn't fit onto page.
  66     // Use this value as 'from' in next call to Render in order to print multiple pages
  67     // document
  68     // If dont_render is TRUE then nothing is rendered into DC and it only counts
  69     // pixels and return y coord of the next page
  70     //
  71     // known_pagebreaks and number_of_pages are used only when counting pages;
  72     // otherwise, their default values should be used. Their purpose is to
  73     // support pagebreaks using a subset of CSS2's <DIV>. The <DIV> handler
  74     // needs to know what pagebreaks have already been set so that it doesn't
  75     // set the same pagebreak twice.
  76     //
  77     // CAUTION! Render() changes DC's user scale and does NOT restore it!
  78     int Render(int x, int y, int from = 0, int dont_render = FALSE, int to = INT_MAX,
  79                int *known_pagebreaks = NULL, int number_of_pages = 0);
  80
  81     // returns total height of the html document
  82     // (compare Render's return value with this)
  83     int GetTotalHeight();
  84
  85 private:
  86     wxDC *m_DC;
  87     wxHtmlWinParser *m_Parser;
  88     wxFileSystem *m_FS;
  89     wxHtmlContainerCell *m_Cells;
  90     int m_MaxWidth, m_Width, m_Height;
  91
  92     DECLARE_NO_COPY_CLASS(wxHtmlDCRenderer)
  93 };
  94
  95
  96
  97
  98
  99 enum {
 100     wxPAGE_ODD,
 101     wxPAGE_EVEN,
 102     wxPAGE_ALL
 103 };
 104
 105
 106
 107 //--------------------------------------------------------------------------------
 108 // wxHtmlPrintout
 109 //                  This class is derived from standard wxWidgets printout class
 110 //                  and is used to print HTML documents.
 111 //--------------------------------------------------------------------------------
 112
 113
 114 class WXDLLIMPEXP_HTML wxHtmlPrintout : public wxPrintout
 115 {
 116 public:
 117     wxHtmlPrintout(const wxString& title = wxT("Printout"));
 118     ~wxHtmlPrintout();
 119
 120     void SetHtmlText(const wxString& html, const wxString &basepath = wxEmptyString, bool isdir = TRUE);
 121             // prepares the class for printing this html document.
 122             // Must be called before using the class, in fact just after constructor
 123             //
 124             // basepath is base directory (html string would be stored there if it was in
 125             // file). It is used to determine path for loading images, for example.
 126             // isdir is FALSE if basepath is filename, TRUE if it is directory name
 127             // (see wxFileSystem for detailed explanation)
 128
 129     void SetHtmlFile(const wxString &htmlfile);
 130             // same as SetHtmlText except that it takes regular file as the parameter
 131
 132     void SetHeader(const wxString& header, int pg = wxPAGE_ALL);
 133     void SetFooter(const wxString& footer, int pg = wxPAGE_ALL);
 134             // sets header/footer for the document. The argument is interpreted as HTML document.
 135             // You can use macros in it:
 136             //   @PAGENUM@ is replaced by page number
 137             //   @PAGESCNT@ is replaced by total number of pages
 138             //
 139             // pg is one of wxPAGE_ODD, wxPAGE_EVEN and wx_PAGE_ALL constants.
 140             // You can set different header/footer for odd and even pages
 141
 142     // Sets fonts to be used when displaying HTML page. (if size null then default sizes used).
 143     void SetFonts(wxString normal_face, wxString fixed_face, const int *sizes = NULL);
 144
 145     void SetMargins(float top = 25.2, float bottom = 25.2, float left = 25.2, float right = 25.2,
 146                     float spaces = 5);
 147             // sets margins in milimeters. Defaults to 1 inch for margins and 0.5cm for space
 148             // between text and header and/or footer
 149
 150     // wxPrintout stuff:
 151     bool OnPrintPage(int page);
 152     bool HasPage(int page);
 153     void GetPageInfo(int *minPage, int *maxPage, int *selPageFrom, int *selPageTo);
 154     bool OnBeginDocument(int startPage, int endPage);
 155     void OnPreparePrinting();
 156
 157     // Adds input filter
 158     static void AddFilter(wxHtmlFilter *filter);
 159
 160     // Cleanup
 161     static void CleanUpStatics();
 162
 163 private:
 164
 165     void RenderPage(wxDC *dc, int page);
 166             // renders one page into dc
 167     wxString TranslateHeader(const wxString& instr, int page);
 168             // substitute @PAGENUM@ and @PAGESCNT@ by real values
 169     void CountPages();
 170             // counts pages and fills m_NumPages and m_PageBreaks
 171
 172
 173 private:
 174     int m_NumPages;
 175     int m_PageBreaks[wxHTML_PRINT_MAX_PAGES];
 176
 177     wxString m_Document, m_BasePath;
 178     bool m_BasePathIsDir;
 179     wxString m_Headers[2], m_Footers[2];
 180
 181     int m_HeaderHeight, m_FooterHeight;
 182     wxHtmlDCRenderer *m_Renderer, *m_RendererHdr;
 183     float m_MarginTop, m_MarginBottom, m_MarginLeft, m_MarginRight, m_MarginSpace;
 184
 185     // list of HTML filters
 186     static wxList m_Filters;
 187
 188     DECLARE_NO_COPY_CLASS(wxHtmlPrintout)
 189 };
 190
 191
 192
 193
 194
 195 //--------------------------------------------------------------------------------
 196 // wxHtmlEasyPrinting
 197 //                  This class provides very simple interface to printing
 198 //                  architecture. It allows you to print HTML documents only
 199 //                  with very few commands.
 200 //
 201 //                  Note : do not create this class on stack only.
 202 //                         You should create an instance on app startup and
 203 //                         use this instance for all printing. Why? The class
 204 //                         stores page&printer settings in it.
 205 //--------------------------------------------------------------------------------
 206
 207 class WXDLLIMPEXP_HTML wxHtmlEasyPrinting : public wxObject
 208 {
 209 public:
 210     wxHtmlEasyPrinting(const wxString& name = wxT("Printing"), wxWindow *parentWindow = NULL);
 211     ~wxHtmlEasyPrinting();
 212
 213     bool PreviewFile(const wxString &htmlfile);
 214     bool PreviewText(const wxString &htmltext, const wxString& basepath = wxEmptyString);
 215             // Preview file / html-text for printing
 216             // (and offers printing)
 217             // basepath is base directory for opening subsequent files (e.g. from <img> tag)
 218
 219     bool PrintFile(const wxString &htmlfile);
 220     bool PrintText(const wxString &htmltext, const wxString& basepath = wxEmptyString);
 221             // Print file / html-text w/o preview
 222
 223     void PrinterSetup();
 224     void PageSetup();
 225             // pop up printer or page setup dialog
 226
 227     void SetHeader(const wxString& header, int pg = wxPAGE_ALL);
 228     void SetFooter(const wxString& footer, int pg = wxPAGE_ALL);
 229             // sets header/footer for the document. The argument is interpreted as HTML document.
 230             // You can use macros in it:
 231             //   @PAGENUM@ is replaced by page number
 232             //   @PAGESCNT@ is replaced by total number of pages
 233             //
 234             // pg is one of wxPAGE_ODD, wxPAGE_EVEN and wx_PAGE_ALL constants.
 235             // You can set different header/footer for odd and even pages
 236
 237     void SetFonts(wxString normal_face, wxString fixed_face, const int *sizes = 0);
 238     // Sets fonts to be used when displaying HTML page. (if size null then default sizes used)
 239
 240     wxPrintData *GetPrintData();
 241     wxPageSetupDialogData *GetPageSetupData() {return m_PageSetupData;}
 242             // return page setting data objects.
 243             // (You can set their parameters.)
 244
 245 protected:
 246     virtual wxHtmlPrintout *CreatePrintout();
 247     virtual bool DoPreview(wxHtmlPrintout *printout1, wxHtmlPrintout *printout2);
 248     virtual bool DoPrint(wxHtmlPrintout *printout);
 249
 250 private:
 251     wxPrintData *m_PrintData;
 252     wxPageSetupDialogData *m_PageSetupData;
 253     wxString m_Name;
 254     int m_FontsSizesArr[7];
 255     int *m_FontsSizes;
 256     wxString m_FontFaceFixed, m_FontFaceNormal;
 257     wxString m_Headers[2], m_Footers[2];
 258     wxWindow *m_ParentWindow;
 259
 260     DECLARE_NO_COPY_CLASS(wxHtmlEasyPrinting)
 261 };
 262
 263
 264
 265
 266 #endif  // wxUSE_HTML & wxUSE_PRINTING_ARCHITECTURE
 267
 268 #endif // _WX_HTMPRINT_H_
 269