class Pango::Coverage


A Pango::Coverage structure is a map from Unicode characters to Pango::CoverageLevel values.

It is often necessary in Pango to determine if a particular font can represent a particular character, and also how well it can represent that character. The Pango::Coverage is a data structure that is used to represent that information. It is an opaque structure with no public fields.

Defined in:



Class Method Summary

Instance Method Summary

Instance methods inherited from class GObject::Object

bind_property(source_property : String, target : GObject::Object, target_property : String, flags : GObject::BindingFlags) : GObject::Binding bind_property, bind_property_full(source_property : String, target : GObject::Object, target_property : String, flags : GObject::BindingFlags, transform_to : GObject::Closure, transform_from : GObject::Closure) : GObject::Binding bind_property_full, data(key : String) : Pointer(Void)? data, finalize finalize, freeze_notify : Nil freeze_notify, getv(names : Enumerable(String), values : Enumerable(_)) : Nil getv, notify(property_name : String) : Nil notify, notify_by_pspec(pspec : GObject::ParamSpec) : Nil notify_by_pspec, notify_signal notify_signal, property(property_name : String, value : _) : Nil property, qdata(quark : UInt32) : Pointer(Void)? qdata, ref_count : UInt32 ref_count, run_dispose : Nil run_dispose, set_data(key : String, data : Pointer(Void)?) : Nil set_data, set_property(property_name : String, value : _) : Nil set_property, steal_data(key : String) : Pointer(Void)? steal_data, steal_qdata(quark : UInt32) : Pointer(Void)? steal_qdata, thaw_notify : Nil thaw_notify, to_unsafe : Pointer(Void) to_unsafe, watch_closure(closure : GObject::Closure) : Nil watch_closure

Constructor methods inherited from class GObject::Object

cast(obj : GObject::Object) : self cast, cast?(obj : GObject::Object) : self? cast?, new(pointer : Pointer(Void), transfer : GICrystal::Transfer)
, newv(object_type : UInt64, parameters : Enumerable(GObject::Parameter)) : self newv

Class methods inherited from class GObject::Object

compat_control(what : UInt64, data : Pointer(Void)?) : UInt64 compat_control, g_type : UInt64 g_type, interface_find_property(g_iface : GObject::TypeInterface, property_name : String) : GObject::ParamSpec interface_find_property, interface_list_properties(g_iface : GObject::TypeInterface) : Enumerable(GObject::ParamSpec) interface_list_properties

Constructor Detail

def : self #

Create a new Pango::Coverage

Class Method Detail

def self.from_bytes(bytes : Enumerable(UInt8)) : Pango::Coverage? #

Convert data generated from Pango::Coverage#to_bytes back to a Pango::Coverage.

def self.from_bytes(*bytes : UInt8) #

def self.g_type : UInt64 #

Returns the type id (GType) registered in GLib type system.

Instance Method Detail

def copy : Pango::Coverage #

Copy an existing Pango::Coverage.

def get(index_ : Int32) : Pango::CoverageLevel #

Determine whether a particular index is covered by @coverage.

def max(other : Pango::Coverage) : Nil #

Set the coverage for each index in @coverage to be the max (better) value of the current coverage for the index and the coverage for the corresponding index in @other.

def ref : Pango::Coverage #

Increase the reference count on the Pango::Coverage by one.

def set(index_ : Int32, level : Pango::CoverageLevel) : Nil #

Modify a particular index within @coverage

def to_bytes(bytes : Enumerable(UInt8)) : Nil #

Convert a Pango::Coverage structure into a flat binary format.

def to_bytes(*bytes : UInt8) #

def unref : Nil #

Decrease the reference count on the Pango::Coverage by one.

If the result is zero, free the coverage and all associated memory.