Class: Glimmer::Gtk::WidgetProxy::DrawingAreaProxy

Inherits:
Glimmer::Gtk::WidgetProxy show all
Includes:
Transformable
Defined in:
lib/glimmer/gtk/widget_proxy/drawing_area_proxy.rb

Overview

Proxy for Gtk drawing area objects

Follows the Proxy Design Pattern

Constant Summary

Constants inherited from Glimmer::Gtk::WidgetProxy

KEYWORD_ALIASES

Instance Attribute Summary collapse

Attributes inherited from Glimmer::Gtk::WidgetProxy

#args, #block, #gtk, #keyword, #parent_proxy

Instance Method Summary collapse

Methods included from Transformable

#apply_transforms, #rotate, #scale, #translate

Methods inherited from Glimmer::Gtk::WidgetProxy

constant_symbol, #content, create, descendant_keyword_constant_map, exist?, gtk_constant_symbol, keyword, map_descendant_keyword_constants_for, #method_missing, reset_descendant_keyword_constant_map, #respond_to?, #respond_to_gtk?, #send_to_gtk, widget_proxy_class, #window_proxy

Constructor Details

#initialize(keyword, parent, args, &block) ⇒ DrawingAreaProxy

Returns a new instance of DrawingAreaProxy.



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# File 'lib/glimmer/gtk/widget_proxy/drawing_area_proxy.rb', line 73

def initialize(keyword, parent, args, &block)
  @shapes = []
  super
end

Dynamic Method Handling

This class handles dynamic methods through the method_missing method in the class Glimmer::Gtk::WidgetProxy

Instance Attribute Details

#shapes ⇒ Object (readonly)

Returns the value of attribute shapes.



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# File 'lib/glimmer/gtk/widget_proxy/drawing_area_proxy.rb', line 71

def shapes
  @shapes
end

Instance Method Details

#paint(*args) ⇒ Object 



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# File 'lib/glimmer/gtk/widget_proxy/drawing_area_proxy.rb', line 103

def paint(*args)
  @paint = args
end

#post_add_content ⇒ Object 



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# File 'lib/glimmer/gtk/widget_proxy/drawing_area_proxy.rb', line 78

def post_add_content
  super
  @gtk.signal_connect(:draw) do |drawing_area_widget, cairo_context|
    if @paint
      previous_matrix = cairo_context.matrix
      apply_transforms(cairo_context, target: :drawing_area)
      Shape.set_source_dynamically(cairo_context, @paint)
      cairo_context.paint
      cairo_context.set_matrix(previous_matrix)
    end
    
    shapes.each do |shape|
      shape.draw(drawing_area_widget, cairo_context)
    end
  end
end

#post_initialize_child(child) ⇒ Object 



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# File 'lib/glimmer/gtk/widget_proxy/drawing_area_proxy.rb', line 95

def post_initialize_child(child)
  if child.is_a?(Glimmer::Gtk::Shape)
    shapes << child
  else
    super
  end
end