fc48f78fd0
We used to show a modal dialog if the page didn't fit horizontally but this
was too intrusive when the user was just previewing the output and not really
printing it. Moreover, the question of the message box ("Print" or "Cancel")
simply didn't make sense in this case.
Fix both problems by not showing this dialog at all when previewing. Instead,
notify the user with a much less intrusive info bar in the preview window.
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@64214 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
321 lines
12 KiB
C++
321 lines
12 KiB
C++
/////////////////////////////////////////////////////////////////////////////
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// Name: 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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// RCS-ID: $Id$
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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 <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 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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// [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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// Returned value is y coordinate of first cell than didn't fit onto page.
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// Use this value as 'from' in next call to Render in order to print multiple pages
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// document
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// If dont_render is TRUE then nothing is rendered into DC and it only counts
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// pixels and return y coord of the next page
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//
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// known_pagebreaks and number_of_pages are used only when counting pages;
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// otherwise, their default values should be used. Their purpose is to
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// support pagebreaks using a subset of CSS2's <DIV>. The <DIV> handler
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// needs to know what pagebreaks have already been set so that it doesn't
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// set the same pagebreak twice.
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//
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// CAUTION! Render() changes DC's user scale and does NOT restore it!
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int Render(int x, int y, wxArrayInt& known_pagebreaks, int from = 0,
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int dont_render = false, 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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// (compare Render's return value with this)
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int GetTotalHeight() const;
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private:
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wxDC *m_DC;
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wxHtmlWinParser *m_Parser;
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wxFileSystem *m_FS;
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wxHtmlContainerCell *m_Cells;
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int m_MaxWidth, m_Width, m_Height;
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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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virtual ~wxHtmlPrintout();
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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 = 25.2, float bottom = 25.2, float left = 25.2, float right = 25.2,
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float spaces = 5);
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// sets margins in milimeters. 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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// wxPrintout stuff:
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bool OnPrintPage(int page);
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bool HasPage(int page);
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void GetPageInfo(int *minPage, int *maxPage, int *selPageFrom, int *selPageTo);
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bool OnBeginDocument(int startPage, int endPage);
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void OnPreparePrinting();
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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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// counts pages and fills m_NumPages and m_PageBreaks
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private:
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int m_NumPages;
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//int m_PageBreaks[wxHTML_PRINT_MAX_PAGES];
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wxArrayInt 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 wxList 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 = 0);
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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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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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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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