Class: Glimmer::Gtk::Shape::Path

Inherits:
Glimmer::Gtk::Shape show all
Defined in:
lib/glimmer/gtk/shape/path.rb

Overview

Represents Gtk paths consisting of operations: move_to, line_to, curve_to, rel_move_to, rel_line_to, rel_curve_to, and close_path

Constant Summary

Constants inherited from Glimmer::Gtk::Shape

SHAPE_FILL_PROPERTIES, SHAPE_FONT_PROPERTIES, SHAPE_GENERAL_PROPERTIES, SHAPE_STROKE_PROPERTIES

Instance Attribute Summary collapse

Attributes inherited from Glimmer::Gtk::Shape

#args, #block, #clip, #fill, #keyword, #parent, #stroke

Instance Method Summary collapse

Methods inherited from Glimmer::Gtk::Shape

#apply_property, constant_symbol, #content, create, descendant_keyword_constant_map, #draw, #draw_clip, #draw_fill, #draw_font, #draw_stroke, exist?, keyword, map_descendant_keyword_constants_for, #method_missing, one_based_color_rgb, #post_add_content, reset_descendant_keyword_constant_map, #respond_to?, set_source_dynamically, shape_class, #window_proxy

Methods included from Transformable

#apply_transforms, #rotate, #scale, #translate

Constructor Details

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

Returns a new instance of Path.



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# File 'lib/glimmer/gtk/shape/path.rb', line 67

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

Dynamic Method Handling

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

Instance Attribute Details

#drawing_operations ⇒ Object (readonly)

Returns the value of attribute drawing_operations.



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# File 'lib/glimmer/gtk/shape/path.rb', line 65

def drawing_operations
  @drawing_operations
end

Instance Method Details

#arc(*args) ⇒ Object 



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# File 'lib/glimmer/gtk/shape/path.rb', line 102

def arc(*args)
  @drawing_operations << [:arc, args]
end

#arc_negative(*args) ⇒ Object 



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# File 'lib/glimmer/gtk/shape/path.rb', line 106

def arc_negative(*args)
  @drawing_operations << [:arc_negative, args]
end

#child_paths ⇒ Object 



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# File 'lib/glimmer/gtk/shape/path.rb', line 76

def child_paths
  @child_paths ||= []
end

#close_path ⇒ Object 



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# File 'lib/glimmer/gtk/shape/path.rb', line 158

def close_path
  @drawing_operations << [:close_path]
end

#curve_to(*args) ⇒ Object 



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# File 'lib/glimmer/gtk/shape/path.rb', line 142

def curve_to(*args)
  @drawing_operations << [:curve_to, args]
end

#draw_shape(drawing_area_widget, cairo_context) ⇒ Object 



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# File 'lib/glimmer/gtk/shape/path.rb', line 80

def draw_shape(drawing_area_widget, cairo_context)
  previous_matrix = cairo_context.matrix
  apply_transforms(cairo_context, target: :shape)
  cairo_context.new_path
  @drawing_operations.each do |drawing_operation_details|
    cairo_context.send(drawing_operation_details[0], *drawing_operation_details[1])
  end
  child_paths.each do |child|
    cairo_context.new_sub_path
    child.drawing_operations.each do |drawing_operation_details|
      cairo_context.send(drawing_operation_details[0], *drawing_operation_details[1])
    end
  end
  cairo_context.set_matrix(previous_matrix)
end

#glyph_path(*args) ⇒ Object 



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# File 'lib/glimmer/gtk/shape/path.rb', line 126

def glyph_path(*args)
  @drawing_operations << [:text_path, args]
end

#line_to(*args) ⇒ Object 



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# File 'lib/glimmer/gtk/shape/path.rb', line 138

def line_to(*args)
  @drawing_operations << [:line_to, args]
end

#move_to(*args) ⇒ Object 



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# File 'lib/glimmer/gtk/shape/path.rb', line 134

def move_to(*args)
  @drawing_operations << [:move_to, args]
end

#new_sub_path(*args) ⇒ Object

TODO look into a way to generalize the declaration of the methods below (or perform code reuse)



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# File 'lib/glimmer/gtk/shape/path.rb', line 98

def new_sub_path(*args)
  @drawing_operations << [:new_sub_path, args]
end

#post_initialize_child(child) ⇒ Object 



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# File 'lib/glimmer/gtk/shape/path.rb', line 72

def post_initialize_child(child)
  child_paths << child if child.is_a?(Path)
end

#rectangle(*args) ⇒ Object 



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# File 'lib/glimmer/gtk/shape/path.rb', line 110

def rectangle(*args)
  @drawing_operations << [:rectangle, args]
end

#rel_curve_to(*args) ⇒ Object 



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# File 'lib/glimmer/gtk/shape/path.rb', line 154

def rel_curve_to(*args)
  @drawing_operations << [:rel_curve_to, args]
end

#rel_line_to(*args) ⇒ Object 



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# File 'lib/glimmer/gtk/shape/path.rb', line 150

def rel_line_to(*args)
  @drawing_operations << [:rel_line_to, args]
end

#rel_move_to(*args) ⇒ Object 



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# File 'lib/glimmer/gtk/shape/path.rb', line 146

def rel_move_to(*args)
  @drawing_operations << [:rel_move_to, args]
end

#rounded_rectangle(*args) ⇒ Object 



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# File 'lib/glimmer/gtk/shape/path.rb', line 114

def rounded_rectangle(*args)
  @drawing_operations << [:rounded_rectangle, args]
end

#show_glyphs(*args) ⇒ Object 



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# File 'lib/glimmer/gtk/shape/path.rb', line 130

def show_glyphs(*args)
  @drawing_operations << [:show_text, args]
end

#show_text(*args) ⇒ Object 



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# File 'lib/glimmer/gtk/shape/path.rb', line 122

def show_text(*args)
  @drawing_operations << [:show_text, args]
end

#text_path(*args) ⇒ Object 



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# File 'lib/glimmer/gtk/shape/path.rb', line 118

def text_path(*args)
  @drawing_operations << [:text_path, args]
end