mdbFontEncoding(5) The m17n Library mdbFontEncoding(5)NAME
mdbFontEncoding - Font Encoding
DESCRIPTION
The m17n library loads information about the encoding of each font form the m17n database by the tags <font, encoding>. The data is loaded
as a plist of this format.
FONT-ENCODING ::= PER-FONT *
PER-FONT ::= '(' FONT-SPEC ENCODING [ REPERTORY ] ')'
FONT-SPEC ::=
'(' [ FOUNDRY FAMILY
[ WEIGHT [ STYLE [ STRETCH [ ADSTYLE ]]]]]
REGISTRY ')'
ENCODING ::= SYMBOL
FONT-SPEC is to specify properties of a font. FOUNDRY to REGISTRY are symbols corresponding to Mfoundry to Mregistry property of a font.
See m17nFont for the meaning of each property.
For instance, this FONT-SPEC:
(nil alice0 lao iso8859-1)
should be applied to all fonts whose family name is 'alice0 lao', and registry is 'iso8859-1'.
ENCODING is a symbol representing a charset. A font matching FONT-SPEC supports all characters of the charset, and a character code is
mapped to the corresponding glyph code of the font by this charset.
REPERTORY is a symbol representing a charset or 'nil'. Omitting it is the same as specifying ENCODING as REPERTORY. If it is not 'nil', the
charset specifies the repertory of the font, i.e, which character it supports. Otherwise, whether a specific character is supported by the
font or not is asked to each font driver.
For so called Unicode fonts (registry is 'iso10646-1'), it is recommended to specify 'nil' as REPERTORY because such fonts usually supports
only a subset of Unicode characters.
COPYRIGHT
Copyright (C) 2001 Information-technology Promotion Agency (IPA)
Copyright (C) 2001-2011 National Institute of Advanced Industrial Science and Technology (AIST)
Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License
<http://www.gnu.org/licenses/fdl.html>.
Version 1.6.2 12 Jan 2011 mdbFontEncoding(5)
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mdraw_text(3m17n) The m17n Library mdraw_text(3m17n)NAME
mdraw_text - Draw an M-text on a window.
SYNOPSIS
int mdraw_text (MFrame * frame, MDrawWindow win, int x, int y, MText * mt, int from, int to)
DESCRIPTION
Draw an M-text on a window. The mdraw_text() function draws the text between from and to of M-text mt on window win of frame frame at
coordinate (x, y).
The appearance of the text (size, style, color, etc) is specified by the value of the text property whose key is Mface. If the M-text or a
part of the M-text does not have such a text property, the default face of frame is used.
The font used to draw a character in the M-text is selected from the value of the fontset property of a face by the following algorithm:
1. Search the text properties given to the character for the one whose key is Mcharset; its value should be either a symbol specifying a
charset or Mnil. If the value is Mnil, proceed to the next step.
Otherwise, search the mapping table of the fontset for the charset. If no entry is found proceed to the next step.
If an entry is found, use one of the fonts in the entry that has a glyph for the character and that matches best with the face properties.
If no such font exists, proceed to the next step.
2. Get the character property 'script' of the character. If it is inherited, get the script property from the previous characters. If
there is no previous character, or none of them has the script property other than inherited, proceed to the next step.
Search the text properties given to the character for the one whose key is Mlanguage; its value should be either a symbol specifying a
language or Mnil.
Search the mapping table of the fontset for the combination of the script and language. If no entry is found, proceed to the next step.
If an entry is found, use one of the fonts in the entry that has a glyph for the character and that matches best with the face properties.
If no such font exists, proceed to the next step.
3. Search the fall-back table of the fontset for a font that has a glyph of the character. If such a font is found, use that font.
If no font is found by the algorithm above, this function draws an empty box for the character.
This function draws only the glyph foreground. To specify the background color, use mdraw_image_text() or mdraw_text_with_control().
This function is the counterpart of XDrawString(), XmbDrawString(), and XwcDrawString() functions in the X Window System.
RETURN VALUE
If the operation was successful, mdraw_text() returns 0. If an error is detected, it returns -1 and assigns an error code to the
external variable merror_code.
ERRORS
MERROR_RANGE
SEE ALSO
mdraw_image_text()
COPYRIGHT
Copyright (C) 2001 Information-technology Promotion Agency (IPA)
Copyright (C) 2001-2011 National Institute of Advanced Industrial Science and Technology (AIST)
Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License
<http://www.gnu.org/licenses/fdl.html>.
Version 1.6.2 12 Jan 2011 mdraw_text(3m17n)