PangoFontDescription

typedef struct _PangoFontDescription PangoFontDescription;

The PangoFontDescription structure represents the description of an ideal font. These structures are used both to list what fonts are available on the system and also for specifying the characteristics of a font to load.

PANGO_TYPE_FONT_DESCRIPTION

#define PANGO_TYPE_FONT_DESCRIPTION (pango_font_description_get_type ())

The GObject type for PangoFontDescription.

enum PangoStyle

typedef enum {
  PANGO_STYLE_NORMAL,
  PANGO_STYLE_OBLIQUE,
  PANGO_STYLE_ITALIC
} PangoStyle;

An enumeration specifying the various slant styles possible for a font.

PANGO_TYPE_STYLE

#define PANGO_TYPE_STYLE (pango_style_get_type())

The GObject type for PangoStyle.

enum PangoWeight

typedef enum {
  PANGO_WEIGHT_THIN = 100,
  PANGO_WEIGHT_ULTRALIGHT = 200,
  PANGO_WEIGHT_LIGHT = 300,
  PANGO_WEIGHT_BOOK = 380,
  PANGO_WEIGHT_NORMAL = 400,
  PANGO_WEIGHT_MEDIUM = 500,
  PANGO_WEIGHT_SEMIBOLD = 600,
  PANGO_WEIGHT_BOLD = 700,
  PANGO_WEIGHT_ULTRABOLD = 800,
  PANGO_WEIGHT_HEAVY = 900,
  PANGO_WEIGHT_ULTRAHEAVY = 1000
} PangoWeight;

An enumeration specifying the weight (boldness) of a font. This is a numerical value ranging from 100 to 900, but there are some predefined values:

PANGO_TYPE_WEIGHT

#define PANGO_TYPE_WEIGHT (pango_weight_get_type())

The GObject type for PangoWeight.

enum PangoVariant

typedef enum {
  PANGO_VARIANT_NORMAL,
  PANGO_VARIANT_SMALL_CAPS
} PangoVariant;

An enumeration specifying capitalization variant of the font.

PANGO_TYPE_VARIANT

#define PANGO_TYPE_VARIANT (pango_variant_get_type())

The GObject type for PangoVariant.

enum PangoStretch

typedef enum {
  PANGO_STRETCH_ULTRA_CONDENSED,
  PANGO_STRETCH_EXTRA_CONDENSED,
  PANGO_STRETCH_CONDENSED,
  PANGO_STRETCH_SEMI_CONDENSED,
  PANGO_STRETCH_NORMAL,
  PANGO_STRETCH_SEMI_EXPANDED,
  PANGO_STRETCH_EXPANDED,
  PANGO_STRETCH_EXTRA_EXPANDED,
  PANGO_STRETCH_ULTRA_EXPANDED
} PangoStretch;

An enumeration specifying the width of the font relative to other designs within a family.

PANGO_TYPE_STRETCH

#define PANGO_TYPE_STRETCH (pango_stretch_get_type())

The GObject type for PangoStretch.

enum PangoFontMask

typedef enum {
  PANGO_FONT_MASK_FAMILY  = 1 << 0,
  PANGO_FONT_MASK_STYLE   = 1 << 1,
  PANGO_FONT_MASK_VARIANT = 1 << 2,
  PANGO_FONT_MASK_WEIGHT  = 1 << 3,
  PANGO_FONT_MASK_STRETCH = 1 << 4,
  PANGO_FONT_MASK_SIZE    = 1 << 5,
  PANGO_FONT_MASK_GRAVITY = 1 << 6
} PangoFontMask;

The bits in a PangoFontMask correspond to fields in a PangoFontDescription that have been set.

PANGO_TYPE_FONT_MASK

#define PANGO_TYPE_FONT_MASK (pango_font_mask_get_type())

The GObject type for PangoFontMask.

pango_font_description_new ()

PangoFontDescription * pango_font_description_new       (void);

Creates a new font description structure with all fields unset.

pango_font_description_copy ()

PangoFontDescription * pango_font_description_copy      (const PangoFontDescription *desc);

Make a copy of a PangoFontDescription.

pango_font_description_copy_static ()

PangoFontDescription * pango_font_description_copy_static
                                                        (const PangoFontDescription *desc);

Like pango_font_description_copy(), but only a shallow copy is made of the family name and other allocated fields. The result can only be used until desc is modified or freed. This is meant to be used when the copy is only needed temporarily.

pango_font_description_hash ()

guint               pango_font_description_hash         (const PangoFontDescription *desc);

Computes a hash of a PangoFontDescription structure suitable to be used, for example, as an argument to g_hash_table_new(). The hash value is independent of desc->mask.

pango_font_description_equal ()

gboolean            pango_font_description_equal        (const PangoFontDescription *desc1,
                                                         const PangoFontDescription *desc2);

Compares two font descriptions for equality. Two font descriptions are considered equal if the fonts they describe are provably identical. This means that their masks do not have to match, as long as other fields are all the same. (Two font descriptions may result in identical fonts being loaded, but still compare FALSE.)

pango_font_description_free ()

void                pango_font_description_free         (PangoFontDescription *desc);

Frees a font description.

pango_font_descriptions_free ()

void                pango_font_descriptions_free        (PangoFontDescription **descs,
                                                         int n_descs);

Frees an array of font descriptions.

pango_font_description_set_family ()

void                pango_font_description_set_family   (PangoFontDescription *desc,
                                                         const char *family);

Sets the family name field of a font description. The family name represents a family of related font styles, and will resolve to a particular PangoFontFamily. In some uses of PangoFontDescription, it is also possible to use a comma separated list of family names for this field.

pango_font_description_set_family_static ()

void                pango_font_description_set_family_static
                                                        (PangoFontDescription *desc,
                                                         const char *family);

Like pango_font_description_set_family(), except that no copy of family is made. The caller must make sure that the string passed in stays around until desc has been freed or the name is set again. This function can be used if family is a static string such as a C string literal, or if desc is only needed temporarily.

pango_font_description_get_family ()

const char *        pango_font_description_get_family   (const PangoFontDescription *desc);

Gets the family name field of a font description. See pango_font_description_set_family().

pango_font_description_set_style ()

void                pango_font_description_set_style    (PangoFontDescription *desc,
                                                         PangoStyle style);

Sets the style field of a PangoFontDescription. The PangoStyle enumeration describes whether the font is slanted and the manner in which it is slanted; it can be either PANGO_STYLE_NORMAL, PANGO_STYLE_ITALIC, or PANGO_STYLE_OBLIQUE. Most fonts will either have a italic style or an oblique style, but not both, and font matching in Pango will match italic specifications with oblique fonts and vice-versa if an exact match is not found.

pango_font_description_get_style ()

PangoStyle          pango_font_description_get_style    (const PangoFontDescription *desc);

Gets the style field of a PangoFontDescription. See pango_font_description_set_style().

pango_font_description_set_variant ()

void                pango_font_description_set_variant  (PangoFontDescription *desc,
                                                         PangoVariant variant);

Sets the variant field of a font description. The PangoVariant can either be PANGO_VARIANT_NORMAL or PANGO_VARIANT_SMALL_CAPS.

pango_font_description_get_variant ()

PangoVariant        pango_font_description_get_variant  (const PangoFontDescription *desc);

Gets the variant field of a PangoFontDescription. See pango_font_description_set_variant().

pango_font_description_set_weight ()

void                pango_font_description_set_weight   (PangoFontDescription *desc,
                                                         PangoWeight weight);

Sets the weight field of a font description. The weight field specifies how bold or light the font should be. In addition to the values of the PangoWeight enumeration, other intermediate numeric values are possible.

pango_font_description_get_weight ()

PangoWeight         pango_font_description_get_weight   (const PangoFontDescription *desc);

Gets the weight field of a font description. See pango_font_description_set_weight().

pango_font_description_set_stretch ()

void                pango_font_description_set_stretch  (PangoFontDescription *desc,
                                                         PangoStretch stretch);

Sets the stretch field of a font description. The stretch field specifies how narrow or wide the font should be.

pango_font_description_get_stretch ()

PangoStretch        pango_font_description_get_stretch  (const PangoFontDescription *desc);

Gets the stretch field of a font description. See pango_font_description_set_stretch().

pango_font_description_set_size ()

void                pango_font_description_set_size     (PangoFontDescription *desc,
                                                         gint size);

Sets the size field of a font description in fractional points. This is mutually exclusive with pango_font_description_set_absolute_size().

pango_font_description_get_size ()

gint                pango_font_description_get_size     (const PangoFontDescription *desc);

Gets the size field of a font description. See pango_font_description_set_size().

pango_font_description_set_absolute_size ()

void                pango_font_description_set_absolute_size
                                                        (PangoFontDescription *desc,
                                                         double size);

Sets the size field of a font description, in device units. This is mutually exclusive with pango_font_description_set_size() which sets the font size in points.

Since 1.8

pango_font_description_get_size_is_absolute ()

gboolean            pango_font_description_get_size_is_absolute
                                                        (const PangoFontDescription *desc);

Determines whether the size of the font is in points (not absolute) or device units (absolute). See pango_font_description_set_size() and pango_font_description_set_absolute_size().

Since 1.8

pango_font_description_set_gravity ()

void                pango_font_description_set_gravity  (PangoFontDescription *desc,
                                                         PangoGravity gravity);

Sets the gravity field of a font description. The gravity field specifies how the glyphs should be rotated. If gravity is PANGO_GRAVITY_AUTO, this actually unsets the gravity mask on the font description.

This function is seldom useful to the user. Gravity should normally be set on a PangoContext.

Since 1.16

pango_font_description_get_gravity ()

PangoGravity        pango_font_description_get_gravity  (const PangoFontDescription *desc);

Gets the gravity field of a font description. See pango_font_description_set_gravity().

Since 1.16

pango_font_description_get_set_fields ()

PangoFontMask       pango_font_description_get_set_fields
                                                        (const PangoFontDescription *desc);

Determines which fields in a font description have been set.

pango_font_description_unset_fields ()

void                pango_font_description_unset_fields (PangoFontDescription *desc,
                                                         PangoFontMask to_unset);

Unsets some of the fields in a PangoFontDescription. The unset fields will get back to their default values.

pango_font_description_merge ()

void                pango_font_description_merge        (PangoFontDescription *desc,
                                                         const PangoFontDescription *desc_to_merge,
                                                         gboolean replace_existing);

Merges the fields that are set in desc_to_merge into the fields in desc. If replace_existing is FALSE, only fields in desc that are not already set are affected. If TRUE, then fields that are already set will be replaced as well.

If desc_to_merge is NULL, this function performs nothing.

pango_font_description_merge_static ()

void                pango_font_description_merge_static (PangoFontDescription *desc,
                                                         const PangoFontDescription *desc_to_merge,
                                                         gboolean replace_existing);

Like pango_font_description_merge(), but only a shallow copy is made of the family name and other allocated fields. desc can only be used until desc_to_merge is modified or freed. This is meant to be used when the merged font description is only needed temporarily.

pango_font_description_better_match ()

gboolean            pango_font_description_better_match (const PangoFontDescription *desc,
                                                         const PangoFontDescription *old_match,
                                                         const PangoFontDescription *new_match);

Determines if the style attributes of new_match are a closer match for desc than those of old_match are, or if old_match is NULL, determines if new_match is a match at all. Approximate matching is done for weight and style; other style attributes must match exactly. Style attributes are all attributes other than family and size-related attributes. Approximate matching for style considers PANGO_STYLE_OBLIQUE and PANGO_STYLE_ITALIC as matches, but not as good a match as when the styles are equal.

Note that old_match must match desc.

pango_font_description_from_string ()

PangoFontDescription * pango_font_description_from_string
                                                        (const char *str);

Creates a new font description from a string representation in the form "[FAMILY-LIST] [STYLE-OPTIONS] [SIZE]", where FAMILY-LIST is a comma separated list of families optionally terminated by a comma, STYLE_OPTIONS is a whitespace separated list of words where each WORD describes one of style, variant, weight, stretch, or gravity, and SIZE is a decimal number (size in points) or optionally followed by the unit modifier "px" for absolute size. Any one of the options may be absent. If FAMILY-LIST is absent, then the family_name field of the resulting font description will be initialized to NULL. If STYLE-OPTIONS is missing, then all style options will be set to the default values. If SIZE is missing, the size in the resulting font description will be set to 0.

pango_font_description_to_string ()

char *                 pango_font_description_to_string (const PangoFontDescription *desc);

Creates a string representation of a font description. See pango_font_description_from_string() for a description of the format of the string representation. The family list in the string description will only have a terminating comma if the last word of the list is a valid style option.

pango_font_description_to_filename ()

char *                 pango_font_description_to_filename
                                                        (const PangoFontDescription *desc);

Creates a filename representation of a font description. The filename is identical to the result from calling pango_font_description_to_string(), but with underscores instead of characters that are untypical in filenames, and in lower case only.

struct PangoFontMetrics

struct PangoFontMetrics {
  guint ref_count;

  int ascent;
  int descent;
  int approximate_char_width;
  int approximate_digit_width;
  int underline_position;
  int underline_thickness;
  int strikethrough_position;
  int strikethrough_thickness;
};

A PangoFontMetrics structure holds the overall metric information for a font (possibly restricted to a script). The fields of this structure are private to implementations of a font backend. See the documentation of the corresponding getters for documentation of their meaning.

PANGO_TYPE_FONT_METRICS

#define PANGO_TYPE_FONT_METRICS  (pango_font_metrics_get_type ())

The GObject type for PangoFontMetrics.

pango_font_metrics_ref ()

PangoFontMetrics *  pango_font_metrics_ref              (PangoFontMetrics *metrics);

Increase the reference count of a font metrics structure by one.

pango_font_metrics_unref ()

void                pango_font_metrics_unref            (PangoFontMetrics *metrics);

Decrease the reference count of a font metrics structure by one. If the result is zero, frees the structure and any associated memory.

pango_font_metrics_get_ascent ()

int                 pango_font_metrics_get_ascent       (PangoFontMetrics *metrics);

Gets the ascent from a font metrics structure. The ascent is the distance from the baseline to the logical top of a line of text. (The logical top may be above or below the top of the actual drawn ink. It is necessary to lay out the text to figure where the ink will be.)

pango_font_metrics_get_descent ()

int                 pango_font_metrics_get_descent      (PangoFontMetrics *metrics);

Gets the descent from a font metrics structure. The descent is the distance from the baseline to the logical bottom of a line of text. (The logical bottom may be above or below the bottom of the actual drawn ink. It is necessary to lay out the text to figure where the ink will be.)

pango_font_metrics_get_approximate_char_width ()

int                 pango_font_metrics_get_approximate_char_width
                                                        (PangoFontMetrics *metrics);

Gets the approximate character width for a font metrics structure. This is merely a representative value useful, for example, for determining the initial size for a window. Actual characters in text will be wider and narrower than this.

pango_font_metrics_get_approximate_digit_width ()

int                 pango_font_metrics_get_approximate_digit_width
                                                        (PangoFontMetrics *metrics);

Gets the approximate digit width for a font metrics structure. This is merely a representative value useful, for example, for determining the initial size for a window. Actual digits in text can be wider or narrower than this, though this value is generally somewhat more accurate than the result of pango_font_metrics_get_approximate_char_width() for digits.

pango_font_metrics_get_underline_thickness ()

int                 pango_font_metrics_get_underline_thickness
                                                        (PangoFontMetrics *metrics);

Gets the suggested thickness to draw for the underline.

Since 1.6

pango_font_metrics_get_underline_position ()

int                 pango_font_metrics_get_underline_position
                                                        (PangoFontMetrics *metrics);

Gets the suggested position to draw the underline. The value returned is the distance above the baseline of the top of the underline. Since most fonts have underline positions beneath the baseline, this value is typically negative.

Since 1.6

pango_font_metrics_get_strikethrough_thickness ()

int                 pango_font_metrics_get_strikethrough_thickness
                                                        (PangoFontMetrics *metrics);

Gets the suggested thickness to draw for the strikethrough.

Since 1.6

pango_font_metrics_get_strikethrough_position ()

int                 pango_font_metrics_get_strikethrough_position
                                                        (PangoFontMetrics *metrics);

Gets the suggested position to draw the strikethrough. The value returned is the distance above the baseline of the top of the strikethrough.

Since 1.6

PangoFont

typedef struct _PangoFont PangoFont;

The PangoFont structure is used to represent a font in a rendering-system-independent matter. To create an implementation of a PangoFont, the rendering-system specific code should allocate a larger structure that contains a nested PangoFont, fill in the klass member of the nested PangoFont with a pointer to a appropriate PangoFontClass, then call pango_font_init() on the structure.

The PangoFont structure contains one member which the implementation fills in.

PANGO_TYPE_FONT

#define PANGO_TYPE_FONT              (pango_font_get_type ())

The GObject type for PangoFont.

PANGO_FONT()

#define PANGO_FONT(object)           (G_TYPE_CHECK_INSTANCE_CAST ((object), PANGO_TYPE_FONT, PangoFont))

Casts a GObject to a PangoFont.

PANGO_IS_FONT()

#define PANGO_IS_FONT(object)        (G_TYPE_CHECK_INSTANCE_TYPE ((object), PANGO_TYPE_FONT))

Returns TRUE if object is a PangoFont.

pango_font_find_shaper ()

PangoEngineShape *     pango_font_find_shaper           (PangoFont *font,
                                                         PangoLanguage *language,
                                                         guint32 ch);

Finds the best matching shaper for a font for a particular language tag and character point.

pango_font_describe ()

PangoFontDescription * pango_font_describe              (PangoFont *font);

Returns a description of the font, with font size set in points. Use pango_font_describe_with_absolute_size() if you want the font size in device units.

pango_font_describe_with_absolute_size ()

PangoFontDescription * pango_font_describe_with_absolute_size
                                                        (PangoFont *font);

Returns a description of the font, with absolute font size set (in device units). Use pango_font_describe() if you want the font size in points.

Since 1.14

pango_font_get_coverage ()

PangoCoverage *        pango_font_get_coverage          (PangoFont *font,
                                                         PangoLanguage *language);

Computes the coverage map for a given font and language tag.

pango_font_get_glyph_extents ()

void                pango_font_get_glyph_extents        (PangoFont *font,
                                                         PangoGlyph glyph,
                                                         PangoRectangle *ink_rect,
                                                         PangoRectangle *logical_rect);

Gets the logical and ink extents of a glyph within a font. The coordinate system for each rectangle has its origin at the base line and horizontal origin of the character with increasing coordinates extending to the right and down. The macros PANGO_ASCENT(), PANGO_DESCENT(), PANGO_LBEARING(), and PANGO_RBEARING() can be used to convert from the extents rectangle to more traditional font metrics. The units of the rectangles are in 1/PANGO_SCALE of a device unit.

If font is NULL, this function gracefully sets some sane values in the output variables and returns.

pango_font_get_metrics ()

PangoFontMetrics *     pango_font_get_metrics           (PangoFont *font,
                                                         PangoLanguage *language);

Gets overall metric information for a font. Since the metrics may be substantially different for different scripts, a language tag can be provided to indicate that the metrics should be retrieved that correspond to the script(s) used by that language.

If font is NULL, this function gracefully sets some sane values in the output variables and returns.

pango_font_get_font_map ()

PangoFontMap *      pango_font_get_font_map             (PangoFont *font);

Gets the font map for which the font was created.

Note that the font maintains a weak reference to the font map, so if all references to font map are dropped, the font map will be finalized even if there are fonts created with the font map that are still alive. In that case this function will return NULL. It is the responsibility of the user to ensure that the font map is kept alive. In most uses this is not an issue as a PangoContext holds a reference to the font map.

Since 1.10

struct PangoFontFamily

struct PangoFontFamily;

The PangoFontFamily structure is used to represent a family of related font faces. The faces in a family share a common design, but differ in slant, weight, width and other aspects.

PANGO_TYPE_FONT_FAMILY

#define PANGO_TYPE_FONT_FAMILY              (pango_font_family_get_type ())

The GObject type for PangoFontFamily.

PANGO_FONT_FAMILY()

#define PANGO_FONT_FAMILY(object)           (G_TYPE_CHECK_INSTANCE_CAST ((object), PANGO_TYPE_FONT_FAMILY, PangoFontFamily))

Casts a GObject to a PangoFontFamily.

PANGO_IS_FONT_FAMILY()

#define PANGO_IS_FONT_FAMILY(object)        (G_TYPE_CHECK_INSTANCE_TYPE ((object), PANGO_TYPE_FONT_FAMILY))

Returns TRUE if object is a PangoFontFamily.

pango_font_family_get_name ()

const char *        pango_font_family_get_name          (PangoFontFamily *family);

Gets the name of the family. The name is unique among all fonts for the font backend and can be used in a PangoFontDescription to specify that a face from this family is desired.

pango_font_family_is_monospace ()

gboolean            pango_font_family_is_monospace      (PangoFontFamily *family);

A monospace font is a font designed for text display where the the characters form a regular grid. For Western languages this would mean that the advance width of all characters are the same, but this categorization also includes Asian fonts which include double-width characters: characters that occupy two grid cells. g_unichar_iswide() returns a result that indicates whether a character is typically double-width in a monospace font.

The best way to find out the grid-cell size is to call pango_font_metrics_get_approximate_digit_width(), since the results of pango_font_metrics_get_approximate_char_width() may be affected by double-width characters.

Since 1.4

pango_font_family_list_faces ()

void                pango_font_family_list_faces        (PangoFontFamily *family,
                                                         PangoFontFace ***faces,
                                                         int *n_faces);

Lists the different font faces that make up family. The faces in a family share a common design, but differ in slant, weight, width and other aspects.

struct PangoFontFace

struct PangoFontFace;

The PangoFontFace structure is used to represent a group of fonts with the same family, slant, weight, width, but varying sizes.

PANGO_TYPE_FONT_FACE

#define PANGO_TYPE_FONT_FACE              (pango_font_face_get_type ())

The GObject type for PangoFontFace.

PANGO_FONT_FACE()

#define PANGO_FONT_FACE(object)           (G_TYPE_CHECK_INSTANCE_CAST ((object), PANGO_TYPE_FONT_FACE, PangoFontFace))

Casts a GObject to a PangoFontFace.

PANGO_IS_FONT_FACE()

#define PANGO_IS_FONT_FACE(object)        (G_TYPE_CHECK_INSTANCE_TYPE ((object), PANGO_TYPE_FONT_FACE))

Returns TRUE if object is a PangoFontFace.

pango_font_face_get_face_name ()

const char *        pango_font_face_get_face_name       (PangoFontFace *face);

Gets a name representing the style of this face among the different faces in the PangoFontFamily for the face. This name is unique among all faces in the family and is suitable for displaying to users.

pango_font_face_list_sizes ()

void                pango_font_face_list_sizes          (PangoFontFace *face,
                                                         int **sizes,
                                                         int *n_sizes);

List the available sizes for a font. This is only applicable to bitmap fonts. For scalable fonts, stores NULL at the location pointed to by sizes and 0 at the location pointed to by n_sizes. The sizes returned are in Pango units and are sorted in ascending order.

Since 1.4

pango_font_face_describe ()

PangoFontDescription * pango_font_face_describe         (PangoFontFace *face);

Returns the family, style, variant, weight and stretch of a PangoFontFace. The size field of the resulting font description will be unset.

pango_font_face_is_synthesized ()

gboolean            pango_font_face_is_synthesized      (PangoFontFace *face);

Returns whether a PangoFontFace is synthesized by the underlying font rendering engine from another face, perhaps by shearing, emboldening, or lightening it.

Since 1.18

PangoFontMap

typedef struct _PangoFontMap PangoFontMap;

The PangoFontMap represents the set of fonts available for a particular rendering system. This is a virtual object with implementations being specific to particular rendering systems. To create an implementation of a PangoFontMap, the rendering-system specific code should allocate a larger structure that contains a nested PangoFontMap, fill in the klass member of the nested PangoFontMap with a pointer to a appropriate PangoFontMapClass, then call pango_font_map_init() on the structure.

The PangoFontMap structure contains one member which the implementation fills in.

PANGO_TYPE_FONT_MAP

#define PANGO_TYPE_FONT_MAP              (pango_font_map_get_type ())

The GObject type for PangoFontMap.

PANGO_FONT_MAP()

#define PANGO_FONT_MAP(object)           (G_TYPE_CHECK_INSTANCE_CAST ((object), PANGO_TYPE_FONT_MAP, PangoFontMap))

Casts a GObject to a PangoFontMap.

PANGO_IS_FONT_MAP()

#define PANGO_IS_FONT_MAP(object)        (G_TYPE_CHECK_INSTANCE_TYPE ((object), PANGO_TYPE_FONT_MAP))

Returns TRUE if object is a PangoFontMap.

struct PangoFontMapClass

struct PangoFontMapClass {
  GObjectClass parent_class;


  PangoFont *   (*load_font)     (PangoFontMap               *fontmap,
				  PangoContext               *context,
				  const PangoFontDescription *desc);
  void          (*list_families) (PangoFontMap               *fontmap,
				  PangoFontFamily          ***families,
				  int                        *n_families);
  PangoFontset *(*load_fontset)  (PangoFontMap               *fontmap,
				  PangoContext               *context,
				  const PangoFontDescription *desc,
				  PangoLanguage              *language);

  const char *shape_engine_type;
};

The PangoFontMapClass structure holds the virtual functions for a particular PangoFontMap implementation.

PANGO_FONT_MAP_CLASS()

#define PANGO_FONT_MAP_CLASS(klass)      (G_TYPE_CHECK_CLASS_CAST ((klass), PANGO_TYPE_FONT_MAP, PangoFontMapClass))

Casts a GObject to a PangoFontMapClass.

PANGO_IS_FONT_MAP_CLASS()

#define PANGO_IS_FONT_MAP_CLASS(klass)   (G_TYPE_CHECK_CLASS_TYPE ((klass), PANGO_TYPE_FONT_MAP))

Returns TRUE if klass is a subtype of PangoFontMapClass.

PANGO_FONT_MAP_GET_CLASS()

#define PANGO_FONT_MAP_GET_CLASS(obj)    (G_TYPE_INSTANCE_GET_CLASS ((obj), PANGO_TYPE_FONT_MAP, PangoFontMapClass))

Returns the type of a PangoFontMap.

pango_font_map_create_context ()

PangoContext *      pango_font_map_create_context       (PangoFontMap *fontmap);

Creates a PangoContext connected to fontmap. This is equivalent to pango_context_new() followed by pango_context_set_font_map().

If you are using Pango as part of a higher-level system, that system may have it's own way of create a PangoContext. For instance, the GTK+ toolkit has, among others, gdk_pango_context_get_for_screen(), and gtk_widget_get_pango_context(). Use those instead.

Since 1.22

pango_font_map_load_font ()

PangoFont *         pango_font_map_load_font            (PangoFontMap *fontmap,
                                                         PangoContext *context,
                                                         const PangoFontDescription *desc);

Load the font in the fontmap that is the closest match for desc.

pango_font_map_load_fontset ()

PangoFontset *      pango_font_map_load_fontset         (PangoFontMap *fontmap,
                                                         PangoContext *context,
                                                         const PangoFontDescription *desc,
                                                         PangoLanguage *language);

Load a set of fonts in the fontmap that can be used to render a font matching desc.

pango_font_map_list_families ()

void                pango_font_map_list_families        (PangoFontMap *fontmap,
                                                         PangoFontFamily ***families,
                                                         int *n_families);

List all families for a fontmap.

pango_font_map_get_shape_engine_type ()

const char *        pango_font_map_get_shape_engine_type
                                                        (PangoFontMap *fontmap);

Returns the render ID for shape engines for this fontmap. See the render_type field of PangoEngineInfo.

Since 1.4

struct PangoFontset

struct PangoFontset;

A PangoFontset represents a set of PangoFont to use when rendering text. It is the result of resolving a PangoFontDescription against a particular PangoContext. It has operations for finding the component font for a particular Unicode character, and for finding a composite set of metrics for the entire fontset.

PANGO_TYPE_FONTSET

#define PANGO_TYPE_FONTSET              (pango_fontset_get_type ())

The GObject type for PangoFontset.

struct PangoFontsetClass

struct PangoFontsetClass {
  GObjectClass parent_class;


  PangoFont *       (*get_font)     (PangoFontset     *fontset,
				     guint             wc);

  PangoFontMetrics *(*get_metrics)  (PangoFontset     *fontset);
  PangoLanguage *   (*get_language) (PangoFontset     *fontset);
  void              (*foreach)      (PangoFontset           *fontset,
				     PangoFontsetForeachFunc func,
				     gpointer                data);
};

The PangoFontsetClass structure holds the virtual functions for a particular PangoFontset implementation.

pango_fontset_get_font ()

PangoFont *         pango_fontset_get_font              (PangoFontset *fontset,
                                                         guint wc);

Returns the font in the fontset that contains the best glyph for the Unicode character wc.

pango_fontset_get_metrics ()

PangoFontMetrics *  pango_fontset_get_metrics           (PangoFontset *fontset);

Get overall metric information for the fonts in the fontset.

PangoFontsetForeachFunc ()

gboolean            (*PangoFontsetForeachFunc)          (PangoFontset *fontset,
                                                         PangoFont *font,
                                                         gpointer data);

A callback function used by pango_fontset_foreach() when enumerating the fonts in a fontset.

Since 1.4

pango_fontset_foreach ()

void                pango_fontset_foreach               (PangoFontset *fontset,
                                                         PangoFontsetForeachFunc func,
                                                         gpointer data);

Iterates through all the fonts in a fontset, calling func for each one. If func returns TRUE, that stops the iteration.

Since 1.4

PangoFontsetSimple

typedef struct _PangoFontsetSimple PangoFontsetSimple;

PangoFontsetSimple is a implementation of the abstract PangoFontset base class in terms of an array of fonts, which the creator provides when constructing the PangoFontsetSimple.

PANGO_TYPE_FONTSET_SIMPLE

#define PANGO_TYPE_FONTSET_SIMPLE       (pango_fontset_simple_get_type ())

The GObject type for PangoFontsetSimple.

pango_fontset_simple_new ()

PangoFontsetSimple *  pango_fontset_simple_new          (PangoLanguage *language);

Creates a new PangoFontsetSimple for the given language.

pango_fontset_simple_append ()

void                pango_fontset_simple_append         (PangoFontsetSimple *fontset,
                                                         PangoFont *font);

Adds a font to the fontset.

pango_fontset_simple_size ()

int                 pango_fontset_simple_size           (PangoFontsetSimple *fontset);

Returns the number of fonts in the fontset.