ruby-****@sourc*****
ruby-****@sourc*****
2005年 3月 29日 (火) 18:22:37 JST
------------------------- REMOTE_ADDR = 15.211.169.100 REMOTE_HOST = REMOTE_USER = ruby-gnome2-hiki URL = http://ruby-gnome2.sourceforge.jp/cgi-bin/hiki/hiki.cgi?pango-markup ------------------------- TITLE = Pango Text Attribute Markup KEYWORD = = Pango Text Attribute Markup Simple markup language to encode text with attributes == Pango Text Attribute Markup Language Frequently, you want to display some text to the user with attributes applied to part of the text (for example, you might want bold or italicized words). With the base Pango interfaces, you could create a Pango::AttrList and apply it to the text; the problem is that you'd need to apply attributes to some numeric range of characters, for example "characters 12-17." This is broken from an internationalization standpoint; once the text is translated, the word you wanted to italicize could be in a different position. The solution is to include the text attributes in the string to be translated. Pango provides this feature with a small markup language. You can parse a marked-up string into the string text plus a Pango::AttrList using the function Pango.parse_markup. A simple example of a marked-up string might be: "<span foreground="blue" size="x-large">Blue text</span> is <i>cool</i>!" The root tag of a marked-up document is <markup>, but Pango.parse_markup allows you to omit this tag, so you will most likely never need to use it. The most general markup tag is <span>, then there are some convenience tags. <span> has the following attributes: === <span> attributes --- font_desc A font description string, such as "Sans Italic 12"; note that any other span attributes will override this description. So if you have "Sans Italic" and also a style="normal" attribute, you will get Sans normal, not italic. --- font_family A font family name --- face Synonym for font_family --- size Font size in 1024ths of a point, or one of the absolute sizes 'xx-small', 'x-small', 'small', 'medium', 'large', 'x-large', 'xx-large', or one of the relative sizes 'smaller' or 'larger'. If you want to specify a absolute size, it's usually easier to take advantage of the ability to specify a partial font description using 'font_desc'; you can use font_desc='12.5' rather than size='12800'. --- style One of 'normal', 'oblique', 'italic' --- weight One of 'ultralight', 'light', 'normal', 'bold', 'ultrabold', 'heavy', or a numeric weight --- variant 'normal' or 'smallcaps' --- stretch One of 'ultracondensed', 'extracondensed', 'condensed', 'semicondensed', 'normal', 'semiexpanded', 'expanded', 'extraexpanded', 'ultraexpanded' --- foreground An RGB color specification such as '#00FF00' or a color name such as 'red' --- background An RGB color specification such as '#00FF00' or a color name such as 'red' --- underline One of 'single', 'double', 'low', 'none' --- underline_color The color of underlines; an RGB color specification such as '#00FF00' or a color name such as 'red' --- rise Vertical displacement, in 10000ths of an em. Can be negative for subscript, positive for superscript. --- strikethrough 'true' or 'false' whether to strike through the text --- strikethrough_color The color of strikethrough lines; an RGB color specification such as '#00FF00' or a color name such as 'red' --- fallback 'true' or 'false' whether to enable fallback. If disabled, then characters will only be used from the closest matching font on the system. No fallback will be done to other fonts on the system that might contain the characters in the text. Fallback is enabled by default. Most applications should not disable fallback. --- lang A language code, indicating the text language === Convenience tags The following convenience tags are provided: --- b Bold --- big Makes font relatively larger, equivalent to <span size="larger"> --- i Italic --- s Strikethrough --- sub Subscript --- sup Superscript --- small Makes font relatively smaller, equivalent to <span size="smaller"> --- tt Monospace font --- u Underline == ChangeLog * 2005-03-29 Added. - ((<Masao>))
