321 lines
9.0 KiB
Objective-C
321 lines
9.0 KiB
Objective-C
/////////////////////////////////////////////////////////////////////////////
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// Name: html/winpars.h
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// Purpose: interface of wxHtmlTagsModule
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// Author: wxWidgets team
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// Licence: wxWindows licence
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/////////////////////////////////////////////////////////////////////////////
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/**
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@class wxHtmlTagsModule
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This class provides easy way of filling wxHtmlWinParser's table of
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tag handlers. It is used almost exclusively together with the set of
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@ref overview_html_handlers "TAGS_MODULE_* macros"
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@library{wxhtml}
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@category{html}
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@see @ref overview_html_handlers, wxHtmlTagHandler, wxHtmlWinTagHandler
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*/
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class wxHtmlTagsModule : public wxModule
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{
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public:
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/**
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You must override this method. In most common case its body consists
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only of lines of the following type:
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@code
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parser -> AddTagHandler(new MyHandler);
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@endcode
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It's recommended to use the @b TAGS_MODULE_* macros.
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@param parser
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Pointer to the parser that requested tables filling.
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*/
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virtual void FillHandlersTable(wxHtmlWinParser* parser);
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};
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/**
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@class wxHtmlWinTagHandler
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This is basically wxHtmlTagHandler except that it is extended with protected
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member m_WParser pointing to the wxHtmlWinParser object (value of this member
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is identical to wxHtmlParser's m_Parser).
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@library{wxhtml}
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@category{html}
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*/
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class wxHtmlWinTagHandler : public wxHtmlTagHandler
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{
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public:
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/**
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Constructor.
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*/
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wxHtmlWinTagHandler();
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/**
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Assigns @a parser to this handler. Each @b instance of handler
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is guaranteed to be called only from the one parser.
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*/
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virtual void SetParser(wxHtmlParser* parser);
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protected:
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/**
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Value of this attribute is identical to value of m_Parser.
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The only difference is that m_WParser points to wxHtmlWinParser object
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while m_Parser points to wxHtmlParser object. (The same object, but overcast.)
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*/
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wxHtmlWinParser* m_WParser;
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};
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/**
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@class wxHtmlWinParser
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This class is derived from wxHtmlParser and its main goal is to parse HTML
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input so that it can be displayed in wxHtmlWindow.
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It uses a special wxHtmlWinTagHandler.
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@note The product of parsing is a wxHtmlCell (resp. wxHtmlContainer) object.
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@library{wxhtml}
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@category{html}
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@see @ref overview_html_handlers
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*/
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class wxHtmlWinParser : public wxHtmlParser
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{
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public:
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/**
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Constructor.
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Don't use the default one, use the constructor with @a wndIface parameter
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(@a wndIface is a pointer to interface object for the associated wxHtmlWindow
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or other HTML rendering window such as wxHtmlListBox).
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*/
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wxHtmlWinParser(wxHtmlWindowInterface* wndIface = NULL);
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/**
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Adds module() to the list of wxHtmlWinParser tag handler.
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*/
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static void AddModule(wxHtmlTagsModule* module);
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/**
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Closes the container, sets actual container to the parent one
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and returns pointer to it (see @ref overview_html_cells).
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*/
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wxHtmlContainerCell* CloseContainer();
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/**
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Creates font based on current setting (see SetFontSize(), SetFontBold(),
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SetFontItalic(), SetFontFixed(), wxHtmlWinParser::SetFontUnderlined)
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and returns pointer to it.
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If the font was already created only a pointer is returned.
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*/
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virtual wxFont* CreateCurrentFont();
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/**
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Returns actual text colour.
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*/
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const wxColour& GetActualColor() const;
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/**
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Returns default horizontal alignment.
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*/
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int GetAlign() const;
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/**
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Returns (average) char height in standard font.
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It is used as DC-independent metrics.
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@note This function doesn't return the @e actual height. If you want to
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know the height of the current font, call @c GetDC->GetCharHeight().
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*/
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int GetCharHeight() const;
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/**
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Returns average char width in standard font.
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It is used as DC-independent metrics.
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@note This function doesn't return the @e actual width. If you want to
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know the height of the current font, call @c GetDC->GetCharWidth().
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*/
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int GetCharWidth() const;
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/**
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Returns pointer to the currently opened container (see @ref overview_html_cells).
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Common use:
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@code
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m_WParser -> GetContainer() -> InsertCell(new ...);
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@endcode
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*/
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wxHtmlContainerCell* GetContainer() const;
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/**
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Returns pointer to the DC used during parsing.
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*/
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wxDC* GetDC();
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/**
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Returns wxEncodingConverter class used to do conversion between the
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@ref GetInputEncoding() "input encoding" and the
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@ref GetOutputEncoding() "output encoding".
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*/
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wxEncodingConverter* GetEncodingConverter() const;
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/**
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Returns @true if actual font is bold, @false otherwise.
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*/
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int GetFontBold() const;
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/**
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Returns actual font face name.
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*/
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wxString GetFontFace() const;
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/**
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Returns @true if actual font is fixed face, @false otherwise.
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*/
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int GetFontFixed() const;
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/**
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Returns @true if actual font is italic, @false otherwise.
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*/
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int GetFontItalic() const;
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/**
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Returns actual font size (HTML size varies from -2 to +4)
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*/
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int GetFontSize() const;
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/**
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Returns @true if actual font is underlined, @false otherwise.
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*/
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int GetFontUnderlined() const;
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/**
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Returns input encoding.
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*/
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wxFontEncoding GetInputEncoding() const;
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/**
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Returns actual hypertext link.
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(This value has a non-empty @ref wxHtmlLinkInfo::GetHref Href string
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if the parser is between \<A\> and \</A\> tags, wxEmptyString otherwise.)
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*/
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const wxHtmlLinkInfo& GetLink() const;
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/**
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Returns the colour of hypertext link text.
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*/
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const wxColour& GetLinkColor() const;
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/**
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Returns output encoding, i.e. closest match to document's input encoding
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that is supported by operating system.
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*/
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wxFontEncoding GetOutputEncoding() const;
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/**
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Returns associated window (wxHtmlWindow). This may be @NULL!
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(You should always test if it is non-@NULL.
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For example @c TITLE handler sets window title only if some window is
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associated, otherwise it does nothing.
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*/
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wxHtmlWindowInterface* GetWindowInterface();
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/**
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Opens new container and returns pointer to it (see @ref overview_html_cells).
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*/
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wxHtmlContainerCell* OpenContainer();
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/**
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Sets actual text colour. Note: this DOESN'T change the colour!
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You must create wxHtmlColourCell yourself.
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*/
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void SetActualColor(const wxColour& clr);
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/**
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Sets default horizontal alignment (see wxHtmlContainerCell::SetAlignHor).
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Alignment of newly opened container is set to this value.
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*/
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void SetAlign(int a);
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/**
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Allows you to directly set opened container.
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This is not recommended - you should use OpenContainer() wherever possible.
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*/
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wxHtmlContainerCell* SetContainer(wxHtmlContainerCell* c);
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/**
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Sets the DC. This must be called before wxHtmlParser::Parse!
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@a pixel_scale can be used when rendering to high-resolution
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DCs (e.g. printer) to adjust size of pixel metrics. (Many dimensions in
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HTML are given in pixels -- e.g. image sizes. 300x300 image would be only one
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inch wide on typical printer. With pixel_scale = 3.0 it would be 3 inches.)
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*/
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virtual void SetDC(wxDC* dc, double pixel_scale = 1.0e+0);
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/**
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Sets bold flag of actualfont. @a x is either @true of @false.
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*/
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void SetFontBold(int x);
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/**
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Sets current font face to @a face. This affects either fixed size
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font or proportional, depending on context (whether the parser is
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inside @c \<TT\> tag or not).
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*/
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void SetFontFace(const wxString& face);
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/**
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Sets fixed face flag of actualfont. @a x is either @true of @false.
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*/
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void SetFontFixed(int x);
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/**
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Sets italic flag of actualfont. @a x is either @true of @false.
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*/
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void SetFontItalic(int x);
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/**
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Sets actual font size (HTML size varies from 1 to 7).
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*/
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void SetFontSize(int s);
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/**
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Sets underlined flag of actualfont. @a x is either @true of @false.
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*/
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void SetFontUnderlined(int x);
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/**
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Sets fonts. See wxHtmlWindow::SetFonts for detailed description.
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*/
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void SetFonts(const wxString& normal_face, const wxString& fixed_face,
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const int* sizes = 0);
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/**
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Sets input encoding. The parser uses this information to build conversion
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tables from document's encoding to some encoding supported by operating system.
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*/
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void SetInputEncoding(wxFontEncoding enc);
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/**
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Sets actual hypertext link.
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Empty link is represented by wxHtmlLinkInfo with @e Href equal
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to wxEmptyString.
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*/
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void SetLink(const wxHtmlLinkInfo& link);
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/**
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Sets colour of hypertext link.
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*/
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void SetLinkColor(const wxColour& clr);
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};
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