ruby-****@sourc*****
ruby-****@sourc*****
2005年 11月 4日 (金) 20:12:35 JST
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URL = /hiki.cgi?Pango%3A%3AContext
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TITLE = Pango::Context
KEYWORD =
= class Pango::Context
The Pango::Context object stores global information used to control the itemization process.
== Object Hierarchy
* Object
* GLib::Instantiatable
* GLib::Object
* Pango::Context
== Class Methods
--- Pango::Context.new
Creates a new Pango::Context initialized to default value.
This method is only useful when implementing a new backend for Pango, something applications won't do.
If you are using Pango as part of a higher-level system, that system may have it's own ways of create a Pango::Context. For instance, the GTK+ toolkit has, among others, Gdk::Pango.context, and Gtk::Widget#pango_context.
* Returns: the new Pango::Context
== Instance Methods
--- font_map
Gets the Pango::Fontmap used to look up fonts for this context. ((* Sinece 1.6 *))
* Returns : the font map for the Pango::Context. This value is owned by Pango and should not be unreferenced.
--- font_map=(font_map)
Sets the font map to be searched when fonts are looked-up in this context. This is only for internal use by Pango backends, a Pango::Context obtained via one of the recommended methods should already have a suitable font map.
* font_map: the Pango::FontMap to set.
* Returns: font_map
--- set_font_map(font_map)
Same as font_map=.
* font_map: the Pango::FontMap to set.
* Returns: self
--- base_dir
* Returns: self
--- base_dir=
* Returns: self
--- families
* Returns: self
--- font_description
* Returns: self
--- font_description=
* Returns: self
--- font_options
* Returns: self
--- font_options=
* Returns: self
--- get_metrics
* Returns: self
--- itemize
* Returns: self
--- language
* Returns: self
--- language=
* Returns: self
--- list_families
* Returns: self
--- load_font
* Returns: self
--- load_fontset
* Returns: self
--- matrix
* Returns: self
--- matrix=
* Returns: self
--- resolution
* Returns: self
--- resolution=
* Returns: self
--- set_base_dir
* Returns: self
--- set_colormap
* Returns: self
--- set_colormap=
* Returns: self
--- set_font_description
* Returns: self
--- set_font_options
* Returns: self
--- set_language
* Returns: self
--- set_matrix
* Returns: self
--- set_resolution
* Returns: self
== Constants
=== Direction
The Pango::Context::Direction class represents a direction in the Unicode bidirectional algorithm; not every value in this enumeration makes sense for every usage of Pango::Context::Direction; for example, the return value of Pango.unichar_direction and Pango.find_base_dir cannot be Pango::Context::DIRECTION_WEAK_LTR or Pango::Context::DIRECTION_WEAK_RTL, since every character is either neutral or has a strong direction; on the other hand Pango::Context::DIRECTION_NEUTRAL doesn't make sense to pass to Pango.log2vis_get_embedding_levels.
The Pango::Context::DIRECTION_TTB_LTR, Pango::Context::DIRECTION_TTB_RTL values come from an earlier interpretation of this enumeration as the writing direction of a block of text and are no longer used; See the Text module of the CSS3 spec for how vertical text is planned to be handled in a future version of Pango. The explanation of why Pango::Context::DIRECTION_TTB_LTR is treated as Pango::Context::DIRECTION_RTL can be found there as well.
Notice: You can omit "Context::" like as Pango::DIRECTION_LTR instead of Pango::Context::DIRECTION_LTR.
--- DIRECTION_LTR
A strong left-to-right direction
--- DIRECTION_RTL
A strong right-to-left direction
--- DIRECTION_TTB_LTR
Deprecated value; treated the same as Pango::DIRECTION_RTL
--- DIRECTION_TTB_RTL
Deprecated value; treated the same as Pango::DIRECTION_LTR
--- DIRECTION_WEAK_LTR
A weak left-to-right direction
--- DIRECTION_WEAK_RTL
A weak right-to-left direction
--- DIRECTION_NEUTRAL
No direction specified
== ChangeLog
* 2005-11-04 Added. - ((<Masao>))