wxWidgets/include/wx/html/htmprint.h

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/////////////////////////////////////////////////////////////////////////////
// Name: htmprint.h
// Purpose: html printing classes
// Author: Vaclav Slavik
// Created: 25/09/99
// RCS-ID: $Id$
// Copyright: (c)
// Licence: wxWindows licence
/////////////////////////////////////////////////////////////////////////////
#ifndef _WX_HTMPRINT_H_
#define _WX_HTMPRINT_H_
#ifdef __GNUG__
#pragma interface "htmprint.h"
#endif
#include "wx/defs.h"
#if wxUSE_HTML & wxUSE_PRINTING_ARCHITECTURE
#include "wx/html/htmlcell.h"
#include "wx/html/winpars.h"
#include "wx/print.h"
#include "wx/printdlg.h"
//--------------------------------------------------------------------------------
// wxHtmlDCRenderer
// This class is capable of rendering HTML into specified
// portion of DC
//--------------------------------------------------------------------------------
class WXDLLEXPORT wxHtmlDCRenderer : public wxObject
{
public:
wxHtmlDCRenderer();
~wxHtmlDCRenderer();
// Following 3 methods *must* be called before any call to Render:
// Asign DC to this render
void SetDC(wxDC *dc, double pixel_scale = 1.0);
// Sets size of output rectangle, in pixels. Note that you *can't* change
// width of the rectangle between calls to Render! (You can freely change height.)
void SetSize(int width, int height);
// Sets the text to be displayed.
// Basepath is base directory (html string would be stored there if it was in
// file). It is used to determine path for loading images, for example.
// isdir is FALSE if basepath is filename, TRUE if it is directory name
// (see wxFileSystem for detailed explanation)
void SetHtmlText(const wxString& html, const wxString& basepath = wxEmptyString, bool isdir = TRUE);
// [x,y] is position of upper-left corner of printing rectangle (see SetSize)
// from is y-coordinate of the very first visible cell
// Returned value is y coordinate of first cell than didn't fit onto page.
// Use this value as 'from' in next call to Render in order to print multiple pages
// document
// If dont_render is TRUE then nothing is rendered into DC and it only counts
// pixels and return y coord of the next page
//
// CAUTION! Render() changes DC's user scale and does NOT restore it!
int Render(int x, int y, int from = 0, int dont_render = FALSE);
// returns total height of the html document
// (compare Render's return value with this)
int GetTotalHeight();
private:
wxDC *m_DC;
wxHtmlWinParser *m_Parser;
wxFileSystem *m_FS;
wxHtmlContainerCell *m_Cells;
int m_MaxWidth, m_Width, m_Height;
};
enum {
wxPAGE_ODD,
wxPAGE_EVEN,
wxPAGE_ALL
};
//--------------------------------------------------------------------------------
// wxHtmlPrintout
// This class is derived from standard wxWindows printout class
// and is used to print HTML documents.
//--------------------------------------------------------------------------------
class WXDLLEXPORT wxHtmlPrintout : public wxPrintout
{
public:
wxHtmlPrintout(const wxString& title = "Printout");
~wxHtmlPrintout();
void SetHtmlText(const wxString& html, const wxString &basepath = wxEmptyString, bool isdir = TRUE);
// prepares the class for printing this html document.
// Must be called before using the class, in fact just after constructor
//
// basepath is base directory (html string would be stored there if it was in
// file). It is used to determine path for loading images, for example.
// isdir is FALSE if basepath is filename, TRUE if it is directory name
// (see wxFileSystem for detailed explanation)
void SetHtmlFile(const wxString &htmlfile);
// same as SetHtmlText except that it takes regular file as the parameter
void SetHeader(const wxString& header, int pg = wxPAGE_ALL);
void SetFooter(const wxString& footer, int pg = wxPAGE_ALL);
// sets header/footer for the document. The argument is interpreted as HTML document.
// You can use macros in it:
// @PAGENUM@ is replaced by page number
// @PAGESCNT@ is replaced by total number of pages
//
// pg is one of wxPAGE_ODD, wxPAGE_EVEN and wx_PAGE_ALL constants.
// You can set different header/footer for odd and even pages
void SetMargins(float top = 25.2, float bottom = 25.2, float left = 25.2, float right = 25.2,
float spaces = 5);
// sets margins in milimeters. Defaults to 1 inch for margins and 0.5cm for space
// between text and header and/or footer
// wxPrintout stuff:
bool OnPrintPage(int page);
bool HasPage(int page);
void GetPageInfo(int *minPage, int *maxPage, int *selPageFrom, int *selPageTo);
bool OnBeginDocument(int startPage, int endPage);
private:
void RenderPage(wxDC *dc, int page);
// renders one page into dc
wxString TranslateHeader(const wxString& instr, int page);
// substitute @PAGENUM@ and @PAGESCNT@ by real values
void CountPages();
// counts pages and fills m_NumPages and m_PageBreaks
private:
int m_NumPages;
int m_PageBreaks[wxHTML_PRINT_MAX_PAGES];
wxString m_Document, m_BasePath;
bool m_BasePathIsDir;
wxString m_Headers[2], m_Footers[2];
int m_HeaderHeight, m_FooterHeight;
wxHtmlDCRenderer *m_Renderer, *m_RendererHdr;
float m_MarginTop, m_MarginBottom, m_MarginLeft, m_MarginRight, m_MarginSpace;
};
//--------------------------------------------------------------------------------
// wxHtmlEasyPrinting
// This class provides very simple interface to printing
// architecture. It allows you to print HTML documents only
// with very few commands.
//
// Note : do not create this class on stack only.
// You should create an instance on app startup and
// use this instance for all printing. Why? The class
// stores page&printer settings in it.
//--------------------------------------------------------------------------------
class WXDLLEXPORT wxHtmlEasyPrinting : public wxObject
{
public:
wxHtmlEasyPrinting(const wxString& name = "Printing", wxFrame *parent_frame = NULL);
~wxHtmlEasyPrinting();
bool PreviewFile(const wxString &htmlfile);
bool PreviewText(const wxString &htmltext, const wxString& basepath = wxEmptyString);
// Preview file / html-text for printing
// (and offers printing)
// basepath is base directory for opening subsequent files (e.g. from <img> tag)
bool PrintFile(const wxString &htmlfile);
bool PrintText(const wxString &htmltext, const wxString& basepath = wxEmptyString);
// Print file / html-text w/o preview
void PrinterSetup();
void PageSetup();
// pop up printer or page setup dialog
void SetHeader(const wxString& header, int pg = wxPAGE_ALL);
void SetFooter(const wxString& footer, int pg = wxPAGE_ALL);
// sets header/footer for the document. The argument is interpreted as HTML document.
// You can use macros in it:
// @PAGENUM@ is replaced by page number
// @PAGESCNT@ is replaced by total number of pages
//
// pg is one of wxPAGE_ODD, wxPAGE_EVEN and wx_PAGE_ALL constants.
// You can set different header/footer for odd and even pages
wxPrintData *GetPrintData() {return m_PrintData;}
wxPageSetupDialogData *GetPageSetupData() {return m_PageSetupData;}
// return page setting data objects.
// (You can set their parameters.)
protected:
virtual wxHtmlPrintout *CreatePrintout();
virtual bool DoPreview(wxHtmlPrintout *printout1, wxHtmlPrintout *printout2);
virtual bool DoPrint(wxHtmlPrintout *printout);
private:
wxPrintData *m_PrintData;
wxPageSetupDialogData *m_PageSetupData;
wxString m_Name;
wxString m_Headers[2], m_Footers[2];
wxFrame *m_Frame;
};
#endif // wxUSE_HTML & wxUSE_PRINTING_ARCHITECTURE
#endif // _WX_HTMPRINT_H_