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 |
Returns a description of the font, with font size set in points. | |
FontDescription | describe_with_absolute_size () const |
Returns a description of the font, with absolute font size set (in device units). | |
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. |
A Pango::Font is used to represent a font in a rendering-system-independent matter.
virtual Pango::Font::~Font | ( | ) | [virtual] |
FontDescription Pango::Font::describe | ( | ) | const |
Returns a description of the font, with font size set in points.
Use describe_with_absolute_size() if you want the font size in device units.
FontDescription Pango::Font::describe_with_absolute_size | ( | ) | const |
Returns a description of the font, with absolute font size set (in device units).
Use describe() if you want the font size in points.
Glib::RefPtr<Coverage> Pango::Font::get_coverage | ( | const Language& | language ) | const |
Computes the coverage map for a given font and language tag.
language | The language tag. |
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.
0
if font is 0
. 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.
0
if font is 0
. 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.
Get the ink extents of a glyph within the font.
glyph | The glyph index. |
Gets the logical extents of a glyph within the font.
glyph | The glyph index. |
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.
language | Language tag used to determine which script to get the metrics for. |
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.
const PangoFont* Pango::Font::gobj | ( | ) | const [inline] |
Provides access to the underlying C GObject.
Reimplemented from Glib::ObjectBase.
PangoFont* Pango::Font::gobj | ( | ) | [inline] |
Provides access to the underlying C GObject.
Reimplemented from Glib::ObjectBase.
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.
Glib::RefPtr< Pango::Font > wrap | ( | PangoFont * | object, |
bool | take_copy = false |
||
) | [related] |
A Glib::wrap() method for this object.
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. |