Documentation

Color

• Specifies a color with three integer values for red, green and blue. All values range from 0 (least intense) to 65535 (highest intensity).

Rectangle

• Specifies x, y, width and height

Rectangles describing an area in Doubles.

• Specifies x, y, width and height

The characteristic measurements of a font.

• All values are measured in pixels.
• In Pango versions before 1.6 only ascent, descent, approximateCharWidth and approximateDigitWidth are available.

Define attributes for FontSize.

The style of a font.

• StyleOblique is a slanted font like StyleItalic, but in a roman style.

Define attributes for Weight.

The variant of a font.

• The VariantSmallCaps is a version of a font where lower case letters are shown as physically smaller upper case letters.

Define how wide characters are.

Define attributes for Underline.

• The squiggly underline for errors is only available in Gtk 2.4 and higher.

The PangoDirection type represents a direction in the Unicode bidirectional algorithm.

• The "weak" values denote a left-to-right or right-to-left direction only if there is no character with a strong direction in a paragraph. An example is a sequence of special, graphical characters which are neutral with respect to their rendering direction. A fresh PangoContext is by default weakly left-to-right.
• Not every value in this enumeration makes sense for every usage of PangoDirection; for example, the return value of unicharDirection and findBaseDir cannot be PangoDirectionWeakLtr or PangoDirectionWeakRtl, since every character is either neutral or has a strong direction; on the other hand PangoDirectionNeutral doesn't make sense to pass to log2visGetEmbeddingLevels.

Attributes for PangoItems.

• A given attribute is applied from its start position paStart up, but not including the end position, paEnd.

The EllipsizeMode type describes what sort of (if any) ellipsization should be applied to a line of text. In the ellipsization process characters are removed from the text in order to make it fit to a given width and replaced with an ellipsis.

The PangoGravity type represents the orientation of glyphs in a segment of text. The value GravitySouth, for instance, indicates that the text stands upright, i.e. that the base of the letter is directed downwards.

This is useful when rendering vertical text layouts. In those situations, the layout is rotated using a non-identity PangoMatrix, and then glyph orientation is controlled using PangoGravity. Not every value in this enumeration makes sense for every usage of Gravity; for example, PangoGravityAuto only can be passed to pangoContextSetBaseGravity and can only be returned by pangoContextGetBaseGravity.

• See also: PangoGravityHint
• Gravity is resolved from the context matrix.
• Since Pango 1.16

The PangoGravityHint defines how horizontal scripts should behave in a vertical context.

• PangoGravityHintNatural: scripts will take their natural gravity based on the base gravity and the script. This is the default.
• PangoGravityHintStrong: always use the base gravity set, regardless of the script.
• PangoGravityHintLine: for scripts not in their natural direction (eg. Latin in East gravity), choose per-script gravity such that every script respects the line progression. This means, Latin and Arabic will take opposite gravities and both flow top-to-bottom for example.

Define a synonym for text with embedded markup commands.

• Markup strings are just simple strings. But it's easier to tell if a method expects text with or without markup.

An RFC-3066 language designator to choose scripts.

Specifying no particular language.

Take a RFC-3066 format language tag as a string and convert it to a Language type that can be efficiently passed around and compared with other language tags.

• This function first canonicalizes the string by converting it to lowercase, mapping '_' to '-', and stripping all characters other than letters and '-'.