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