Pango::Font Class Reference
A Pango::Font is used to represent a font in a rendering-system-independent matter. More...

Public Member Functions | |
virtual | ~Font () |
PangoFont* | gobj () |
Provides access to the underlying C GObject. | |
const PangoFont* | gobj () const |
Provides access to the underlying C GObject. | |
PangoFont* | gobj_copy () |
Provides access to the underlying C instance. The caller is responsible for unrefing it. Use when directly setting fields in structs. | |
FontDescription | describe () const |
Return value: a newly-allocated Pango::FontDescription object. | |
FontDescription | describe_with_absolute_size () const |
Return value: a newly-allocated Pango::FontDescription object. | |
Glib::RefPtr< Coverage > | get_coverage (const Language& language) const |
Computes the coverage map for a given font and language tag. | |
FontMetrics | get_metrics () const |
Gets overall metric information for a font. | |
FontMetrics | get_metrics (const Language& language) const |
Gets overall metric information for a font. | |
void | get_glyph_extents (Glyph glyph, Rectangle& ink_rect, Rectangle& logical_rect) const |
Gets the logical and ink extents of a glyph within a font. | |
Glib::RefPtr< FontMap > | get_font_map () |
Gets the font map for which the font was created. | |
Glib::RefPtr< const FontMap > | get_font_map () const |
Gets the font map for which the font was created. | |
Rectangle | get_glyph_ink_extents (Glyph glyph) const |
Get the ink extents of a glyph within the font. | |
Rectangle | get_glyph_logical_extents (Glyph glyph) const |
Gets the logical extents of a glyph within the font. | |
Related Functions | |
(Note that these are not member functions.) | |
Glib::RefPtr< Pango::Font > | wrap (PangoFont* object, bool take_copy=false) |
A Glib::wrap() method for this object. |
Detailed Description
A Pango::Font is used to represent a font in a rendering-system-independent matter.Constructor& Destructor Documentation
virtual Pango::Font::~Font | ( | ) | [virtual] |
Member Function Documentation
PangoFont* Pango::Font::gobj | ( | ) | [inline] |
const PangoFont* Pango::Font::gobj | ( | ) | const [inline] |
PangoFont* Pango::Font::gobj_copy | ( | ) |
Provides access to the underlying C instance. The caller is responsible for unrefing it. Use when directly setting fields in structs.
FontDescription Pango::Font::describe | ( | ) | const |
Return value: a newly-allocated Pango::FontDescription object.
- Returns:
- A newly-allocated Pango::FontDescription object.
FontDescription Pango::Font::describe_with_absolute_size | ( | ) | const |
Return value: a newly-allocated Pango::FontDescription object.
- Returns:
- A newly-allocated Pango::FontDescription object.
Glib::RefPtr<Coverage> Pango::Font::get_coverage | ( | const Language& | language | ) | const |
Computes the coverage map for a given font and language tag.
- Parameters:
-
language The language tag.
- Returns:
- A newly-allocated Pango::Coverage object.
FontMetrics Pango::Font::get_metrics | ( | ) | const |
Gets overall metric information for a font.
The metrics may be substantially different for different scripts. However, this function overload returns the metrics for the entire font.
FontMetrics Pango::Font::get_metrics | ( | const Language& | language | ) | const |
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.
- Parameters:
-
language Language tag used to determine which script to get the metrics for.
- Returns:
- A Pango::Metrics object.
void Pango::Font::get_glyph_extents | ( | Glyph | glyph, | |
Rectangle& | ink_rect, | |||
Rectangle& | logical_rect | |||
) | const |
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.
Glib::RefPtr<FontMap> Pango::Font::get_font_map | ( | ) |
Gets the font map for which the font was created.
Note that the font maintains a <firstterm>weak</firstterm> 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 0
. 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 Pango::Context holds a reference to the font map.
- Returns:
- The Pango::FontMap for the font, or
0
if font is0
.
Glib::RefPtr<const FontMap> Pango::Font::get_font_map | ( | ) | const |
Gets the font map for which the font was created.
Note that the font maintains a <firstterm>weak</firstterm> 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 0
. 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 Pango::Context holds a reference to the font map.
- Returns:
- The Pango::FontMap for the font, or
0
if font is0
.
Get the ink extents of a glyph within the font.
- Parameters:
-
glyph The glyph index.
- Returns:
- The extents of the glyph as drawn.
Gets the logical extents of a glyph within the font.
- Parameters:
-
glyph The glyph index.
- Returns:
- The logical extents of the glyph.
Friends And Related Function Documentation
Glib::RefPtr< Pango::Font > wrap | ( | PangoFont * | object, | |
bool | take_copy = false | |||
) | [related] |
A Glib::wrap() method for this object.
- Parameters:
-
object The C instance. take_copy False if the result should take ownership of the C instance. True if it should take a new copy or ref.
- Returns:
- A C++ instance that wraps this C instance.
The documentation for this class was generated from the following file:
- pangomm/font.h