Class: GObject::Value

Inherits:
Object
  • Object
show all
Defined in:
lib/ffi-gobject/value.rb

Overview

Overrides for GValue, GObject’s generic value container structure.

Constant Summary collapse

TYPE_TO_SET_METHOD_MAP = 
{
  TYPE_BOOLEAN => :set_boolean,
  TYPE_BOXED => :set_boxed,
  TYPE_CHAR => :set_char,
  TYPE_DOUBLE => :set_double,
  TYPE_ENUM => :set_enum,
  TYPE_FLOAT => :set_float,
  TYPE_GTYPE => :set_gtype,
  TYPE_INT64 => :set_int64,
  TYPE_INT => :set_int,
  TYPE_LONG => :set_long,
  TYPE_OBJECT => :set_instance_enhanced,
  TYPE_PARAM => :set_param,
  TYPE_POINTER => :set_pointer,
  TYPE_STRING => :set_string,
  TYPE_UCHAR => :set_uchar,
  TYPE_UINT => :set_uint,
  TYPE_UINT64 => :set_uint64,
  TYPE_ULONG => :set_ulong,
  TYPE_VARIANT => :set_variant,
}
CLASS_TO_GTYPE_MAP = 
{
  true => TYPE_BOOLEAN,
  false => TYPE_BOOLEAN,
  Integer => TYPE_INT,
  String => TYPE_STRING
}
TYPE_TO_GET_METHOD_MAP = 
{
  TYPE_BOOLEAN => :get_boolean,
  TYPE_BOXED => :get_boxed,
  TYPE_CHAR => :get_char,
  TYPE_DOUBLE => :get_double,
  TYPE_ENUM => :get_enum_enhanced,
  TYPE_FLAGS => :get_flags,
  TYPE_FLOAT => :get_float,
  TYPE_GTYPE => :get_gtype,
  TYPE_INT64 => :get_int64,
  TYPE_INT => :get_int,
  TYPE_LONG => :get_long,
  TYPE_OBJECT => :get_object,
  TYPE_POINTER => :get_pointer,
  TYPE_STRING => :get_string,
  TYPE_UCHAR => :get_uchar,
  TYPE_UINT => :get_uint,
  TYPE_UINT64 => :get_uint64,
  TYPE_ULONG => :get_ulong,
  TYPE_VARIANT => :get_variant,
}

Class Method Summary collapse

Instance Method Summary collapse

Class Method Details

.for_g_type(g_type) ⇒ Object 



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# File 'lib/ffi-gobject/value.rb', line 127

def for_g_type g_type
  return nil if g_type == TYPE_NONE
  self.new.tap {|it| it.init g_type }
end

.from(val) ⇒ Object 



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# File 'lib/ffi-gobject/value.rb', line 116

def from val
  case val
  when self
    val
  when nil
    nil
  else
    wrap_ruby_value val
  end
end

.wrap_instance(instance) ⇒ Object

TODO: Combine with wrap_ruby_value



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# File 'lib/ffi-gobject/value.rb', line 134

def self.wrap_instance instance
  self.new.tap {|it|
    it.init GObject.type_from_instance instance
    it.set_instance instance
  }
end

.wrap_ruby_value(val) ⇒ Object

TODO: Give more generic name



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# File 'lib/ffi-gobject/value.rb', line 112

def wrap_ruby_value val
  self.new.set_ruby_value val
end

Instance Method Details

#current_fundamental_type ⇒ Object 



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# File 'lib/ffi-gobject/value.rb', line 67

def current_fundamental_type
  GObject.type_fundamental current_gtype
end

#current_gtype ⇒ Object 



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# File 'lib/ffi-gobject/value.rb', line 63

def current_gtype
  @struct[:g_type]
end

#current_gtype_name ⇒ Object 



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# File 'lib/ffi-gobject/value.rb', line 71

def current_gtype_name
  GObject.type_name current_gtype
end

#get_value ⇒ Object 



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# File 'lib/ffi-gobject/value.rb', line 97

def get_value
  value = get_value_plain
  if current_fundamental_type == TYPE_BOXED
    wrap_boxed value
  else
    value
  end
end

#get_value_plain ⇒ Object 



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# File 'lib/ffi-gobject/value.rb', line 106

def get_value_plain
  send get_method
end

#init_for_ruby_value(val) ⇒ Object 



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# File 'lib/ffi-gobject/value.rb', line 53

def init_for_ruby_value val
  CLASS_TO_GTYPE_MAP.each do |klass, type|
    if klass === val
      init type
      return self
    end
  end
  raise "Can't handle #{val.class}"
end

#set_ruby_value(val) ⇒ Object

TODO: Give more generic name



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# File 'lib/ffi-gobject/value.rb', line 7

def set_ruby_value val
  if current_gtype == 0
    init_for_ruby_value val
  end

  set_value val
end

#set_value(val) ⇒ Object 



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# File 'lib/ffi-gobject/value.rb', line 41

def set_value val
  send set_method, val
  self
end

#value=(val) ⇒ Object 



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# File 'lib/ffi-gobject/value.rb', line 37

def value= val
  set_value val
end