cairo-Text {RGtk2} | R Documentation |
Rendering text and sets of glyphs
cairoSelectFontFace(cr, family, slant, weight)
cairoSetFontSize(cr, size)
cairoSetFontMatrix(cr, matrix)
cairoGetFontMatrix(cr, matrix)
cairoSetFontOptions(cr, options)
cairoGetFontOptions(cr)
cairoSetFontFace(cr, font.face)
cairoGetFontFace(cr)
cairoSetScaledFont(cr, scaled.font)
cairoGetScaledFont(cr)
cairoShowText(cr, utf8)
cairoShowGlyphs(cr, glyphs, num.glyphs)
cairoFontExtents(cr)
cairoTextExtents(cr, utf8)
cairoGlyphExtents(cr, glyphs)
CairoGlyph
CairoGlyph
structure holds information about a single glyph
when drawing or measuring text. A font is (in simple terms) a
collection of shapes used to draw text. A glyph is one of these
shapes. There can be multiple glyphs for a single character
(alternates to be used in different contexts, for example), or a
glyph can be a ligature of multiple
characters. Cairo doesn't expose any way of converting input text
into glyphs, so in order to use the Cairo interfaces that take
arrays of glyphs, you must directly access the appropriate
underlying font system.
Note that the offsets given by x
and y
are not cumulative. When
drawing or measuring text, each glyph is individually positioned
with respect to the overall origin
CairoGlyph
is a transparent-type.
index
x
y
CairoFontSlant
normal
italic
oblique
CairoFontWeight
normal
bold
Derived by RGtkGen from GTK+ documentation
http://www.cairographics.org/manual/cairo-Text.html