X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/880efa2a137ce3e3f39236d0dc85f5d2dacdda12..7447d53c35249d42128d6243c90998f03882859a:/docs/doxygen/overviews/fontencoding.h diff --git a/docs/doxygen/overviews/fontencoding.h b/docs/doxygen/overviews/fontencoding.h index 71452af1a4..7775d313fb 100644 --- a/docs/doxygen/overviews/fontencoding.h +++ b/docs/doxygen/overviews/fontencoding.h @@ -3,86 +3,86 @@ // Purpose: topic overview // Author: wxWidgets team // RCS-ID: $Id$ -// Licence: wxWindows license +// Licence: wxWindows licence ///////////////////////////////////////////////////////////////////////////// /** - @page overview_fontencoding Font Encodings +@page overview_fontencoding Font Encodings - wxWidgets has support for multiple font encodings. +wxWidgets has support for multiple font encodings. - By encoding we mean here the mapping between the character codes and the - letters. Probably the most well-known encoding is (7 bit) ASCII one which is - used almost universally now to represent the letters of the English alphabet - and some other common characters. However, it is not enough to represent the - letters of foreign alphabets and here other encodings come into play. Please - note that we will only discuss 8-bit fonts here and not Unicode - (see @ref overview_unicode). +By encoding we mean here the mapping between the character codes and the +letters. Probably the most well-known encoding is (7 bit) ASCII one which is +used almost universally now to represent the letters of the English alphabet +and some other common characters. However, it is not enough to represent the +letters of foreign alphabets and here other encodings come into play. Please +note that we will only discuss 8-bit fonts here and not Unicode +(see @ref overview_unicode). - Font encoding support is ensured by several classes: - wxFont itself, but also wxFontEnumerator and wxFontMapper. wxFont encoding - support is reflected by a (new) constructor parameter @e encoding which takes - one of the following values (elements of enumeration type @c wxFontEncoding): +Font encoding support is ensured by several classes: +wxFont itself, but also wxFontEnumerator and wxFontMapper. wxFont encoding +support is reflected by a (new) constructor parameter @e encoding which takes +one of the following values (elements of enumeration type @c wxFontEncoding): - @beginDefList - @itemdef{wxFONTENCODING_SYSTEM, - The default encoding of the underlying - operating system (notice that this might be a "foreign" encoding for foreign - versions of Windows 9x/NT).} - @itemdef{wxFONTENCODING_DEFAULT, - The applications default encoding as returned by wxFont::GetDefaultEncoding. - On program startup, the applications default encoding is the same as - wxFONTENCODING_SYSTEM, but may be changed to make all the fonts created later - to use it (by default).} - @itemdef{wxFONTENCODING_ISO8859_1..15, - ISO8859 family encodings which are - usually used by all non-Microsoft operating systems.} - @itemdef{wxFONTENCODING_KOI8, - Standard Cyrillic encoding for the Internet - (but see also wxFONTENCODING_ISO8859_5 and wxFONTENCODING_CP1251).} - @itemdef{wxFONTENCODING_CP1250, Microsoft analogue of ISO8859-2} - @itemdef{wxFONTENCODING_CP1251, Microsoft analogue of ISO8859-5} - @itemdef{wxFONTENCODING_CP1252, Microsoft analogue of ISO8859-1} - @endDefList +@beginDefList +@itemdef{wxFONTENCODING_SYSTEM, + The default encoding of the underlying + operating system (notice that this might be a "foreign" encoding for foreign + versions of Windows 9x/NT).} +@itemdef{wxFONTENCODING_DEFAULT, + The applications default encoding as returned by wxFont::GetDefaultEncoding. + On program startup, the applications default encoding is the same as + wxFONTENCODING_SYSTEM, but may be changed to make all the fonts created later + to use it (by default).} +@itemdef{wxFONTENCODING_ISO8859_1..15, + ISO8859 family encodings which are + usually used by all non-Microsoft operating systems.} +@itemdef{wxFONTENCODING_KOI8, + Standard Cyrillic encoding for the Internet + (but see also wxFONTENCODING_ISO8859_5 and wxFONTENCODING_CP1251).} +@itemdef{wxFONTENCODING_CP1250, Microsoft analogue of ISO8859-2} +@itemdef{wxFONTENCODING_CP1251, Microsoft analogue of ISO8859-5} +@itemdef{wxFONTENCODING_CP1252, Microsoft analogue of ISO8859-1} +@endDefList - As you may see, Microsoft's encoding partly mirror the standard ISO8859 ones, - but there are (minor) differences even between ISO8859-1 (Latin1, ISO encoding - for Western Europe) and CP1251 (WinLatin1, standard code page for English - versions of Windows) and there are more of them for other encodings. +As you may see, Microsoft's encoding partly mirror the standard ISO8859 ones, +but there are (minor) differences even between ISO8859-1 (Latin1, ISO encoding +for Western Europe) and CP1251 (WinLatin1, standard code page for English +versions of Windows) and there are more of them for other encodings. - The situation is particularly complicated with Cyrillic encodings for which - (more than) three incompatible encodings exist: KOI8 (the old standard, widely - used on the Internet), ISO8859-5 (ISO standard for Cyrillic) and CP1251 - (WinCyrillic). +The situation is particularly complicated with Cyrillic encodings for which +(more than) three incompatible encodings exist: KOI8 (the old standard, widely +used on the Internet), ISO8859-5 (ISO standard for Cyrillic) and CP1251 +(WinCyrillic). - This abundance of (incompatible) encodings should make it clear that using - encodings is less easy than it might seem. The problems arise both from the - fact that the standard encodings for the given language (say Russian, which is - written in Cyrillic) are different on different platforms and because the - fonts in the given encoding might just not be installed (this is especially a - problem with Unix, or, in general, non-Win32 systems). +This abundance of (incompatible) encodings should make it clear that using +encodings is less easy than it might seem. The problems arise both from the +fact that the standard encodings for the given language (say Russian, which is +written in Cyrillic) are different on different platforms and because the +fonts in the given encoding might just not be installed (this is especially a +problem with Unix, or, in general, non-Win32 systems). - To clarify, the wxFontEnumerator - class may be used to enumerate both all available encodings and to find the - facename(s) in which the given encoding exists. If you can find the font in - the correct encoding with wxFontEnumerator then your troubles are over, but, - unfortunately, sometimes this is not enough. For example, there is no standard - way (that I know of, please tell me if you do!) to find a font on a Windows system - for KOI8 encoding (only for WinCyrillic one which is quite different), so - wxFontEnumerator will never return one, even if the user has installed a KOI8 - font on his system. +To clarify, the wxFontEnumerator +class may be used to enumerate both all available encodings and to find the +facename(s) in which the given encoding exists. If you can find the font in +the correct encoding with wxFontEnumerator then your troubles are over, but, +unfortunately, sometimes this is not enough. For example, there is no standard +way (that I know of, please tell me if you do!) to find a font on a Windows system +for KOI8 encoding (only for WinCyrillic one which is quite different), so +wxFontEnumerator will never return one, even if the user has installed a KOI8 +font on his system. - To solve this problem, a wxFontMapper class is provided. +To solve this problem, a wxFontMapper class is provided. - This class stores the mapping between the encodings and the font face - names which support them in wxConfig object. Of - course, it would be fairly useless if it tried to determine these mappings by - itself, so, instead, it (optionally) asks the user and remembers his answers - so that the next time the program will automatically choose the correct font. - All these topics are illustrated by the @ref page_utils_samples_font; - please refer to it and the documentation of the classes mentioned here for - further explanations. +This class stores the mapping between the encodings and the font face +names which support them in wxConfigBase object. +Of course, it would be fairly useless if it tried to determine these mappings by +itself, so, instead, it (optionally) asks the user and remembers his answers +so that the next time the program will automatically choose the correct font. +All these topics are illustrated by the @ref page_samples_font; +please refer to it and the documentation of the classes mentioned here for +further explanations. */