git.saurik.com Git - wxWidgets.git/blame_incremental

... / ...

Commit	Line	Data
	1	/////////////////////////////////////////////////////////////////////////////
	2	// Name: fontenum.h
	3	// Purpose: interface of wxFontEnumerator
	4	// Author: wxWidgets team
	5	// Licence: wxWindows licence
	6	/////////////////////////////////////////////////////////////////////////////
	7
	8	/**
	9	@class wxFontEnumerator
	10
	11	wxFontEnumerator enumerates either all available fonts on the system or only
	12	the ones with given attributes - either only fixed-width (suited for use in
	13	programs such as terminal emulators and the like) or the fonts available in
	14	the given encoding).
	15
	16	To do this, you just have to call one of EnumerateXXX() functions - either
	17	wxFontEnumerator::EnumerateFacenames() or wxFontEnumerator::EnumerateEncodings()
	18	and the corresponding callback (wxFontEnumerator::OnFacename() or
	19	wxFontEnumerator::OnFontEncoding()) will be called repeatedly until either
	20	all fonts satisfying the specified criteria are exhausted or the callback
	21	returns @false.
	22
	23	@section fontenum_virtual Virtual functions to override
	24
	25	Either OnFacename or OnFontEncoding should be overridden depending on
	26	whether you plan to call EnumerateFacenames or EnumerateEncodings.
	27	Of course, if you call both of them, you should override both functions.
	28
	29	@library{wxcore}
	30	@category{gdi}
	31
	32	@see @ref overview_fontencoding, @ref page_samples_font, wxFont, wxFontMapper
	33	*/
	34	class wxFontEnumerator
	35	{
	36	public:
	37	wxFontEnumerator();
	38	virtual ~wxFontEnumerator();
	39
	40	/**
	41	Call OnFontEncoding() for each encoding supported by the given font -
	42	or for each encoding supported by at least some font if @a font is not specified.
	43	*/
	44	virtual bool EnumerateEncodings(const wxString& font = wxEmptyString);
	45
	46	/**
	47	Call OnFacename() for each font which supports given encoding (only if
	48	it is not @c wxFONTENCODING_SYSTEM) and is of fixed width
	49	(if @a fixedWidthOnly is @true).
	50
	51	Calling this function with default arguments will result in enumerating all
	52	fonts available on the system.
	53	*/
	54	virtual bool EnumerateFacenames(wxFontEncoding encoding = wxFONTENCODING_SYSTEM,
	55	bool fixedWidthOnly = false);
	56
	57	/**
	58	Return array of strings containing all encodings found by
	59	EnumerateEncodings().
	60	*/
	61	static wxArrayString GetEncodings(const wxString& facename = wxEmptyString);
	62
	63	/**
	64	Return array of strings containing all facenames found by
	65	EnumerateFacenames().
	66	*/
	67	static wxArrayString GetFacenames(wxFontEncoding encoding = wxFONTENCODING_SYSTEM,
	68	bool fixedWidthOnly = false);
	69
	70	/**
	71	Returns @true if the given string is valid face name, i.e. it's the face name
	72	of an installed font and it can safely be used with wxFont::SetFaceName.
	73	*/
	74	static bool IsValidFacename(const wxString& facename);
	75
	76	/**
	77	Called by EnumerateFacenames() for each match.
	78
	79	Return @true to continue enumeration or @false to stop it.
	80	*/
	81	virtual bool OnFacename(const wxString& font);
	82
	83	/**
	84	Called by EnumerateEncodings() for each match.
	85
	86	Return @true to continue enumeration or @false to stop it.
	87	*/
	88	virtual bool OnFontEncoding(const wxString& font,
	89	const wxString& encoding);
	90	};
	91