This feature is no longer recommended. Though some browsers might still support it, it may have already been removed from the relevant web standards, may be in the process of being dropped, or may only be kept for compatibility purposes. Avoid using it, and update existing code if possible; see the compatibility table at the bottom of this page to guide your decision. Be aware that this feature may cease to work at any time.
glyph-orientation-vertical attribute affects the amount that hte current text position advances as each glyph is rendered.
When the inline-progression-direction is vertical and the
glyph-orientation-vertical results in an orientation angle that is a multiple of 180 degrees, then the current text position is incremented according to the vertical metrics of the glyph. Otherwise, if the angle is not a multiple of 180 degrees, then the current text position is incremented according to the horizontal metrics of the glyph.
This attribute is applied only to text written in a vertical
Note: As a presentation attribute,
glyph-orientation-vertical can be used as a CSS property.
Fullwidth ideographic and fullwidth Latin text will be set with a glyph orientation of 0 degrees. Ideographic punctuation and other ideographic characters having alternate horizontal and vertical forms will use the vertical form of the glyph. Text which is not fullwidth will be set with a glyph orientation of 90 degrees.
This reorientation rule applies only to the first-level non-ideographic text. All further embedding of writing modes or bidirectional processing will be based on the first-level rotation.
Note: Text set in this "rotated" manner may contain ligatures or other glyph combining and reordering common to the language and script. (This presentation form does not disable auto-ligature formation or similar context-driven variations.)
The determination of which characters should be auto-rotated may vary across user agents. The determination is based on a complex interaction between country, language, script, character properties, font, and character context.
The value of the angle is restricted to 0, 90, 180, and 270 degrees. If another angle is specified, it is rounded to the closest of the permitted values.
A value of
0degindicates that all glyphs are set with the top of the glyphs oriented towards the reference orientation. A value of
90degindicates an orientation of 90 degrees clockwise from the reference orientation.
|Scalable Vector Graphics (SVG) 1.1 (Second Edition)
The definition of 'glyph-orientation-vertical' in that specification.
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