Class: Skia::Base

Inherits:

Object

• Object
• Skia::Base

Defined in:

lib/skia/base.rb

Direct Known Subclasses

Bitmap, Canvas, ColorFilter, ColorSpace, Data, Document, Font, Image, ImageFilter, MaskFilter, Paint, Path, PathEffect, Picture, Pixmap, RRect, RuntimeEffect, Shader, Surface, TextBlob, Typeface

Instance Attribute Summary

• #ptr ⇒ Object readonly

  Returns the value of attribute ptr.

Class Method Summary

• .release_callback(release_method, ptr) ⇒ Object

Instance Method Summary

• #initialize(ptr, release_method = nil) ⇒ Base constructor

  A new instance of Base.

• #null? ⇒ Boolean
• #to_ptr ⇒ Object

Constructor Details

#initialize(ptr, release_method = nil) ⇒ Base

Returns a new instance of Base.

Raises:

• (NullPointerError)

# File 'lib/skia/base.rb', line 7

def initialize(ptr, release_method = nil)
  raise NullPointerError, 'Pointer cannot be nil' if ptr.nil? || ptr.null?

  @ptr = ptr
  @release_method = release_method
  setup_release if @release_method
end

Instance Attribute Details

#ptr ⇒ Object (readonly)

Returns the value of attribute ptr.

# File 'lib/skia/base.rb', line 5

def ptr
  @ptr
end

Class Method Details

.release_callback(release_method, ptr) ⇒ Object

# File 'lib/skia/base.rb', line 23

def self.release_callback(release_method, ptr)
  proc { Native.send(release_method, ptr) unless ptr.null? }
end

Instance Method Details

#null? ⇒ Boolean

# File 'lib/skia/base.rb', line 19

def null?
  @ptr.nil? || @ptr.null?
end

#to_ptr ⇒ Object

# File 'lib/skia/base.rb', line 15

def to_ptr
  @ptr
end