Individual glyphs have metrics associated with them. The IDWriteFontFace can be created directly from a font name or obtained from a font collection. It contains the font face type, appropriate file references, face identification data and various font data such as metrics, names and glyph outlines. A font face, such as the IDWriteFontFace interface in DirectWrite, represents a physical font, with a specific weight, slant, and stretch.
Adelicia slant font glyphs windows#
The IDWriteFontFace InterfaceĭirectWrite uses the same system for font classification as Windows Pesentation Foundation (WPF), so there can be multiple physical fonts per each font family. Inline objects, such as images, are also drawn separately, as they are not part of a font. Underline and strikethrough are not part of the glyph run for the text range they are applied to, and are drawn later. Glyph RunsĪ glyph run represents a contiguous set of glyphs that all have the same font face and size, as well as the same client drawing effect, if any. OpenType typographic features can be applied to a text range by using the IDWriteTextLayout::SetTypography and passing the DWRITE_FONT_FEATURE_TAG enumeration constant associated with the desired feature. Swashes and other typographic features, including more elaborate alternate glyphs, are available through OpenType. The following screen shot shows standard and swash glyphs for the Pescadero font. The 'A', 'E', and 'O' characters are rendered with stylistic alternate glyphs.Īnother example of alternate glyphs are swash glyphs. Alternate Glyphsįonts may provide alternate glyphs for characters, such as the stylistic alternate glyphs for the Pericles OpenType font, as shown in the following screen shot. This can also be done in the opposite direction, a single glyph being split into multiple glyphs, known as glyph decomposition. Two or more glyphs can also be combined into a single glyph, this process is called glyph composition. Characters might have many glyphs, with each font on a system potentially defining a different glyph for that character.
GlyphsĪ glyph is a physical representation of a character in a given font. Glyphs and glyph runs are available at the lowest layer of functionality of the DirectWrite API, the glyph-rendering layer.
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