remove wxTextAttr::CreateFont(); return wxNullFont from GetFont() if we have no font...

[wxWidgets.git] / interface / html / htmprint.h

/////////////////////////////////////////////////////////////////////////////
// Name:        html/htmprint.h
// Purpose:     documentation for wxHtmlDCRenderer class
// Author:      wxWidgets team
// RCS-ID:      $Id$
// Licence:     wxWindows license
/////////////////////////////////////////////////////////////////////////////

/**
    @class wxHtmlDCRenderer
    @headerfile htmprint.h wx/html/htmprint.h

    This class can render HTML document into a specified area of a DC. You can use
    it
    in your own printing code, although use of wxHtmlEasyPrinting
    or wxHtmlPrintout is strongly recommended.

    @library{wxhtml}
    @category{FIXME}
*/
class wxHtmlDCRenderer : public wxObject
{
public:
    /**
        Constructor.
    */
    wxHtmlDCRenderer();

    /**
        Returns the height of the HTML text. This is important if area height (see
        wxHtmlDCRenderer::SetSize)
        is smaller that total height and thus the page cannot fit into it. In that case
        you're supposed to
        call Render() as long as its return value is smaller than GetTotalHeight's.
    */
    int GetTotalHeight();

    /**
        Renders HTML text to the DC.
        
        @param x,y
            position of upper-left corner of printing rectangle (see SetSize)
        @param from
            y-coordinate of the very first visible cell
        @param dont_render
            if @true then this method only returns y coordinate of the next page
            and does not output anything
    */
    int Render(int x, int y, int from = 0, int dont_render = false);

    /**
        Assign DC instance to the renderer.
        @a pixel_scale can be used when rendering to high-resolution DCs (e.g. printer)
        to adjust size of pixel metrics.
        (Many dimensions in HTML are given in pixels -- e.g. image sizes. 300x300 image
        would be only one
        inch wide on typical printer. With pixel_scale = 3.0 it would be 3 inches.)
    */
    void SetDC(wxDC* dc, double pixel_scale = 1.0);

    /**
        Sets fonts. See wxHtmlWindow::SetFonts for
        detailed description.
        See also SetSize().
    */
    void SetFonts(const wxString& normal_face,
                  const wxString& fixed_face,
                  const int sizes = NULL);

    /**
        Assign text to the renderer. Render() then draws
        the text onto DC.
        
        @param html
            HTML text. This is not a filename.
        @param basepath
            base directory (html string would be stored there if it was in
            file). It is used to determine path for loading images, for example.
        @param isdir
            @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);

    /**
        Set size of output rectangle, in pixels. Note that you @b can't change
        width of the rectangle between calls to wxHtmlDCRenderer::Render!
        (You can freely change height.)
    */
    void SetSize(int width, int height);
};


/**
    @class wxHtmlEasyPrinting
    @headerfile htmprint.h wx/html/htmprint.h

    This class provides very simple interface to printing
    architecture. It allows you to print HTML documents using
    only a few commands.

    @library{wxhtml}
    @category{html}
*/
class wxHtmlEasyPrinting : public wxObject
{
public:
    /**
        Constructor.
        
        @param name
            Name of the printing object. Used by preview frames and setup dialogs.
        @param parentWindow
            pointer to the window that will own the preview frame and setup dialogs.
        May be @NULL.
    */
    wxHtmlEasyPrinting(const wxString& name = "Printing",
                       wxWindow* parentWindow = NULL);

    /**
        Returns a pointer to wxPageSetupDialogData instance used by
        this class. You can set its parameters (via SetXXXX methods).
    */
    wxPageSetupDialogData* GetPageSetupData();

    /**
        Gets the parent window for dialogs.
    */
    wxWindow* GetParentWindow();

    /**
        Returns pointer to wxPrintData instance used by this class. You can
        set its parameters (via SetXXXX methods).
    */
    wxPrintData* GetPrintData();

    /**
        Display page setup dialog and allows the user to modify settings.
    */
    void PageSetup();

    /**
        Preview HTML file.
        Returns @false in case of error -- call
        wxPrinter::GetLastError to get detailed
        information about the kind of the error.
    */
    bool PreviewFile(const wxString& htmlfile);

    /**
        Preview HTML text (not file!).
        Returns @false in case of error -- call
        wxPrinter::GetLastError to get detailed
        information about the kind of the error.
        
        @param htmltext
            HTML text.
        @param basepath
            base directory (html string would be stored there if it was in
            file). It is used to determine path for loading images, for example.
    */
    bool PreviewText(const wxString& htmltext,
                     const wxString& basepath = wxEmptyString);

    /**
        Print HTML file.
        Returns @false in case of error -- call
        wxPrinter::GetLastError to get detailed
        information about the kind of the error.
    */
    bool PrintFile(const wxString& htmlfile);

    /**
        Print HTML text (not file!).
        Returns @false in case of error -- call
        wxPrinter::GetLastError to get detailed
        information about the kind of the error.
        
        @param htmltext
            HTML text.
        @param basepath
            base directory (html string would be stored there if it was in
            file). It is used to determine path for loading images, for example.
    */
    bool PrintText(const wxString& htmltext,
                   const wxString& basepath = wxEmptyString);

    /**
        Sets fonts. See wxHtmlWindow::SetFonts for
        detailed description.
    */
    void SetFonts(const wxString& normal_face,
                  const wxString& fixed_face,
                  const int sizes = NULL);

    /**
        Set page footer. The following macros can be used inside it:
         @DATE@ is replaced by the current date in default format
         @PAGENUM@ is replaced by page number
         @PAGESCNT@ is replaced by total number of pages
         @TIME@ is replaced by the current time in default format
         @TITLE@ is replaced with the title of the document
        
        @param footer
            HTML text to be used as footer.
        @param pg
            one of wxPAGE_ODD, wxPAGE_EVEN and wxPAGE_ALL constants.
    */
    void SetFooter(const wxString& footer, int pg = wxPAGE_ALL);

    /**
        Set page header. The following macros can be used inside it:
         @DATE@ is replaced by the current date in default format
         @PAGENUM@ is replaced by page number
         @PAGESCNT@ is replaced by total number of pages
         @TIME@ is replaced by the current time in default format
         @TITLE@ is replaced with the title of the document
        
        @param header
            HTML text to be used as header.
        @param pg
            one of wxPAGE_ODD, wxPAGE_EVEN and wxPAGE_ALL constants.
    */
    void SetHeader(const wxString& header, int pg = wxPAGE_ALL);

    /**
        Sets the parent window for dialogs.
    */
    void SetParentWindow(wxWindow* window);
};


/**
    @class wxHtmlPrintout
    @headerfile htmprint.h wx/html/htmprint.h

    This class serves as printout class for HTML documents.

    @library{wxhtml}
    @category{html}
*/
class wxHtmlPrintout : public wxPrintout
{
public:
    /**
        Constructor.
    */
    wxHtmlPrintout(const wxString& title = "Printout");

    /**
        Adds a filter to the static list of filters for wxHtmlPrintout. See
        wxHtmlFilter for
        further information.
    */
    static void AddFilter(wxHtmlFilter* filter);

    /**
        Sets fonts. See wxHtmlWindow::SetFonts for
        detailed description.
    */
    void SetFonts(const wxString& normal_face,
                  const wxString& fixed_face,
                  const int sizes = NULL);

    /**
        Set page footer. The following macros can be used inside it:
         @DATE@ is replaced by the current date in default format
         @PAGENUM@ is replaced by page number
         @PAGESCNT@ is replaced by total number of pages
         @TIME@ is replaced by the current time in default format
         @TITLE@ is replaced with the title of the document
        
        @param footer
            HTML text to be used as footer.
        @param pg
            one of wxPAGE_ODD, wxPAGE_EVEN and wxPAGE_ALL constants.
    */
    void SetFooter(const wxString& footer, int pg = wxPAGE_ALL);

    /**
        Set page header. The following macros can be used inside it:
         @DATE@ is replaced by the current date in default format
         @PAGENUM@ is replaced by page number
         @PAGESCNT@ is replaced by total number of pages
         @TIME@ is replaced by the current time in default format
         @TITLE@ is replaced with the title of the document
        
        @param header
            HTML text to be used as header.
        @param pg
            one of wxPAGE_ODD, wxPAGE_EVEN and wxPAGE_ALL constants.
    */
    void SetHeader(const wxString& header, int pg = wxPAGE_ALL);

    /**
        Prepare the class for printing this HTML @b file. The file may be located on
        any virtual file system or it may be normal file.
    */
    void SetHtmlFile(const wxString& htmlfile);

    /**
        Prepare the class for printing this HTML text.
        
        @param html
            HTML text. (NOT file!)
        @param basepath
            base directory (html string would be stored there if it was in
            file). It is used to determine path for loading images, for example.
        @param isdir
            @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);

    /**
        Sets margins in millimeters. Defaults to 1 inch for margins and 0.5cm for space
        between text and header and/or footer
    */
    void SetMargins(float top = 25.2, float bottom = 25.2,
                    float left = 25.2,
                    float right = 25.2,
                    float spaces = 5);
};