329 lines
12 KiB
C++
329 lines
12 KiB
C++
/////////////////////////////////////////////////////////////////////////////
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// Name: wx/html/htmprint.h
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// Purpose: html printing classes
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// Author: Vaclav Slavik
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// Created: 25/09/99
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// Copyright: (c) Vaclav Slavik
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// Licence: wxWindows licence
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/////////////////////////////////////////////////////////////////////////////
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#ifndef _WX_HTMPRINT_H_
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#define _WX_HTMPRINT_H_
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#include "wx/defs.h"
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#if wxUSE_HTML & wxUSE_PRINTING_ARCHITECTURE
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#include "wx/html/htmlcell.h"
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#include "wx/html/winpars.h"
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#include "wx/html/htmlfilt.h"
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#include "wx/print.h"
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#include "wx/printdlg.h"
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#include "wx/vector.h"
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#include <limits.h> // INT_MAX
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//--------------------------------------------------------------------------------
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// wxHtmlDCRenderer
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// This class is capable of rendering HTML into specified
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// portion of DC
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//--------------------------------------------------------------------------------
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class WXDLLIMPEXP_HTML wxHtmlDCRenderer : public wxObject
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{
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public:
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wxHtmlDCRenderer();
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virtual ~wxHtmlDCRenderer();
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// Following 3 methods *must* be called before any call to Render:
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// Assign DC to this render
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void SetDC(wxDC *dc, double pixel_scale = 1.0)
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{ SetDC(dc, pixel_scale, pixel_scale); }
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void SetDC(wxDC *dc, double pixel_scale, double font_scale);
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// Sets size of output rectangle, in pixels. Note that you *can't* change
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// width of the rectangle between calls to Render! (You can freely change height.)
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void SetSize(int width, int height);
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// Sets the text to be displayed.
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// Basepath is base directory (html string would be stored there if it was in
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// file). It is used to determine path for loading images, for example.
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// isdir is false if basepath is filename, true if it is directory name
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// (see wxFileSystem for detailed explanation)
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void SetHtmlText(const wxString& html, const wxString& basepath = wxEmptyString, bool isdir = true);
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// Sets the HTML cell that will be rendered: this is more efficient than
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// using text as it allows to parse it only once. Note that the cell will
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// be modified by this call.
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void SetHtmlCell(wxHtmlContainerCell& cell);
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// Sets fonts to be used when displaying HTML page. (if size null then default sizes used).
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void SetFonts(const wxString& normal_face, const wxString& fixed_face, const int *sizes = NULL);
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// Sets font sizes to be relative to the given size or the system
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// default size; use either specified or default font
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void SetStandardFonts(int size = -1,
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const wxString& normal_face = wxEmptyString,
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const wxString& fixed_face = wxEmptyString);
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// Finds the next page break after the specified (vertical) position.
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// Returns wxNOT_FOUND if passed in position is the last page break.
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int FindNextPageBreak(int pos) const;
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// [x,y] is position of upper-left corner of printing rectangle (see SetSize)
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// from is y-coordinate of the very first visible cell
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// to is y-coordinate of the next following page break, if any
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void Render(int x, int y, int from = 0, int to = INT_MAX);
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// returns total width of the html document
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int GetTotalWidth() const;
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// returns total height of the html document
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int GetTotalHeight() const;
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private:
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void DoSetHtmlCell(wxHtmlContainerCell* cell);
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wxDC *m_DC;
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wxFileSystem m_FS;
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wxHtmlWinParser m_Parser;
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wxHtmlContainerCell *m_Cells;
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int m_Width, m_Height;
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bool m_ownsCells;
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wxDECLARE_NO_COPY_CLASS(wxHtmlDCRenderer);
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};
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enum {
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wxPAGE_ODD,
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wxPAGE_EVEN,
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wxPAGE_ALL
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};
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//--------------------------------------------------------------------------------
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// wxHtmlPrintout
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// This class is derived from standard wxWidgets printout class
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// and is used to print HTML documents.
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//--------------------------------------------------------------------------------
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class WXDLLIMPEXP_HTML wxHtmlPrintout : public wxPrintout
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{
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public:
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wxHtmlPrintout(const wxString& title = wxT("Printout"));
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void SetHtmlText(const wxString& html, const wxString &basepath = wxEmptyString, bool isdir = true);
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// prepares the class for printing this html document.
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// Must be called before using the class, in fact just after constructor
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//
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// basepath is base directory (html string would be stored there if it was in
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// file). It is used to determine path for loading images, for example.
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// isdir is false if basepath is filename, true if it is directory name
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// (see wxFileSystem for detailed explanation)
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void SetHtmlFile(const wxString &htmlfile);
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// same as SetHtmlText except that it takes regular file as the parameter
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void SetHeader(const wxString& header, int pg = wxPAGE_ALL);
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void SetFooter(const wxString& footer, int pg = wxPAGE_ALL);
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// sets header/footer for the document. The argument is interpreted as HTML document.
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// You can use macros in it:
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// @PAGENUM@ is replaced by page number
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// @PAGESCNT@ is replaced by total number of pages
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//
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// pg is one of wxPAGE_ODD, wxPAGE_EVEN and wx_PAGE_ALL constants.
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// You can set different header/footer for odd and even pages
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// Sets fonts to be used when displaying HTML page. (if size null then default sizes used).
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void SetFonts(const wxString& normal_face, const wxString& fixed_face, const int *sizes = NULL);
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// Sets font sizes to be relative to the given size or the system
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// default size; use either specified or default font
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void SetStandardFonts(int size = -1,
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const wxString& normal_face = wxEmptyString,
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const wxString& fixed_face = wxEmptyString);
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void SetMargins(float top = 25.2f, float bottom = 25.2f, float left = 25.2f, float right = 25.2f,
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float spaces = 5);
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// sets margins in millimeters. Defaults to 1 inch for margins and 0.5cm for space
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// between text and header and/or footer
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void SetMargins(const wxPageSetupDialogData& pageSetupData);
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// wxPrintout stuff:
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bool OnPrintPage(int page) wxOVERRIDE;
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bool HasPage(int page) wxOVERRIDE;
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void GetPageInfo(int *minPage, int *maxPage, int *selPageFrom, int *selPageTo) wxOVERRIDE;
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bool OnBeginDocument(int startPage, int endPage) wxOVERRIDE;
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void OnPreparePrinting() wxOVERRIDE;
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// Adds input filter
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static void AddFilter(wxHtmlFilter *filter);
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// Cleanup
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static void CleanUpStatics();
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private:
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// this function is called by the base class OnPreparePrinting()
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// implementation and by default checks whether the document fits into
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// pageArea horizontally and warns the user if it does not and, if we're
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// going to print and not just to preview the document, giving him the
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// possibility to cancel printing
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//
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// you may override it to either suppress this check if truncation of the
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// HTML being printed is acceptable or, on the contrary, add more checks to
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// it, e.g. for the fit in the vertical direction if the document should
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// always appear on a single page
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//
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// return true if printing should go ahead or false to cancel it (the
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// return value is ignored when previewing)
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virtual bool CheckFit(const wxSize& pageArea, const wxSize& docArea) const;
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void RenderPage(wxDC *dc, int page);
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// renders one page into dc
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wxString TranslateHeader(const wxString& instr, int page);
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// substitute @PAGENUM@ and @PAGESCNT@ by real values
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void CountPages();
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// fills m_PageBreaks, which indirectly gives the number of pages
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private:
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wxVector<int> m_PageBreaks;
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wxString m_Document, m_BasePath;
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bool m_BasePathIsDir;
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wxString m_Headers[2], m_Footers[2];
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int m_HeaderHeight, m_FooterHeight;
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wxHtmlDCRenderer m_Renderer, m_RendererHdr;
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float m_MarginTop, m_MarginBottom, m_MarginLeft, m_MarginRight, m_MarginSpace;
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// list of HTML filters
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static wxVector<wxHtmlFilter*> m_Filters;
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wxDECLARE_NO_COPY_CLASS(wxHtmlPrintout);
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};
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//--------------------------------------------------------------------------------
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// wxHtmlEasyPrinting
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// This class provides very simple interface to printing
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// architecture. It allows you to print HTML documents only
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// with very few commands.
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//
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// Note : do not create this class on stack only.
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// You should create an instance on app startup and
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// use this instance for all printing. Why? The class
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// stores page&printer settings in it.
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//--------------------------------------------------------------------------------
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class WXDLLIMPEXP_HTML wxHtmlEasyPrinting : public wxObject
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{
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public:
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wxHtmlEasyPrinting(const wxString& name = wxT("Printing"), wxWindow *parentWindow = NULL);
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virtual ~wxHtmlEasyPrinting();
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bool PreviewFile(const wxString &htmlfile);
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bool PreviewText(const wxString &htmltext, const wxString& basepath = wxEmptyString);
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// Preview file / html-text for printing
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// (and offers printing)
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// basepath is base directory for opening subsequent files (e.g. from <img> tag)
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bool PrintFile(const wxString &htmlfile);
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bool PrintText(const wxString &htmltext, const wxString& basepath = wxEmptyString);
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// Print file / html-text w/o preview
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void PageSetup();
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// pop up printer or page setup dialog
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void SetHeader(const wxString& header, int pg = wxPAGE_ALL);
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void SetFooter(const wxString& footer, int pg = wxPAGE_ALL);
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// sets header/footer for the document. The argument is interpreted as HTML document.
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// You can use macros in it:
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// @PAGENUM@ is replaced by page number
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// @PAGESCNT@ is replaced by total number of pages
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//
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// pg is one of wxPAGE_ODD, wxPAGE_EVEN and wx_PAGE_ALL constants.
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// You can set different header/footer for odd and even pages
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void SetFonts(const wxString& normal_face, const wxString& fixed_face, const int* sizes = NULL);
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// Sets fonts to be used when displaying HTML page. (if size null then default sizes used)
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// Sets font sizes to be relative to the given size or the system
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// default size; use either specified or default font
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void SetStandardFonts(int size = -1,
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const wxString& normal_face = wxEmptyString,
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const wxString& fixed_face = wxEmptyString);
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wxPrintData *GetPrintData();
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wxPageSetupDialogData *GetPageSetupData() {return m_PageSetupData;}
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// return page setting data objects.
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// (You can set their parameters.)
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wxWindow* GetParentWindow() const { return m_ParentWindow; }
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// get the parent window
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void SetParentWindow(wxWindow* window) { m_ParentWindow = window; }
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// set the parent window
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const wxString& GetName() const { return m_Name; }
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// get the printout name
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void SetName(const wxString& name) { m_Name = name; }
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// set the printout name
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// Controls showing the dialog when printing: by default, always shown.
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enum PromptMode
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{
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Prompt_Never,
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Prompt_Once,
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Prompt_Always
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};
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void SetPromptMode(PromptMode promptMode) { m_promptMode = promptMode; }
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protected:
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virtual wxHtmlPrintout *CreatePrintout();
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virtual bool DoPreview(wxHtmlPrintout *printout1, wxHtmlPrintout *printout2);
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virtual bool DoPrint(wxHtmlPrintout *printout);
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private:
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wxPrintData *m_PrintData;
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wxPageSetupDialogData *m_PageSetupData;
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wxString m_Name;
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int m_FontsSizesArr[7];
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int *m_FontsSizes;
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wxString m_FontFaceFixed, m_FontFaceNormal;
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enum FontMode
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{
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FontMode_Explicit,
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FontMode_Standard
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};
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FontMode m_fontMode;
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wxString m_Headers[2], m_Footers[2];
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wxWindow *m_ParentWindow;
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PromptMode m_promptMode;
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wxDECLARE_NO_COPY_CLASS(wxHtmlEasyPrinting);
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};
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#endif // wxUSE_HTML & wxUSE_PRINTING_ARCHITECTURE
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#endif // _WX_HTMPRINT_H_
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