Module: TaskJuggler::Painter::Primitives

Included in:
TaskJuggler::Painter, Element, Group
Defined in:
lib/taskjuggler/Painter/Primitives.rb

Overview

This module contains utility methods to create the canvas Elements with minimal overhead. The element is added to it’s current parent and mandatory arguments are enforced. It also eliminates the need to call ‘new’ methods of each Element.

Constant Summary collapse

StrokeAttrs = 
[ :stroke, :stroke_opacity, :stroke_width ]
FillAttrs = 
[ :fill, :fill_opacity ]
FillAndStrokeAttrs = 
StrokeAttrs + FillAttrs
TextAttrs = 
FillAndStrokeAttrs + [ :font_family, :font_size ]

Instance Method Summary collapse

Instance Method Details

#circle(cx, cy, r, attrs = {}) ⇒ Object 



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# File 'lib/taskjuggler/Painter/Primitives.rb', line 48

def circle(cx, cy, r, attrs = {})
  attrs[:cx] = cx
  attrs[:cy] = cy
  attrs[:r] = r
  @elements << (c = Circle.new(attrs))
  c
end

#color(*args) ⇒ Object 



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# File 'lib/taskjuggler/Painter/Primitives.rb', line 35

def color(*args)
  Color.new(*args)
end

#ellipse(cx, cy, rx, ry, attrs = {}) ⇒ Object 



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# File 'lib/taskjuggler/Painter/Primitives.rb', line 56

def ellipse(cx, cy, rx, ry, attrs = {})
  attrs[:cx] = cx
  attrs[:cy] = cy
  attrs[:rx] = rx
  attrs[:ry] = ry
  @elements << (e = Ellipse.new(attrs))
  e
end

#group(attrs = {}, &block) ⇒ Object 



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# File 'lib/taskjuggler/Painter/Primitives.rb', line 43

def group(attrs = {}, &block)
  @elements << (g = Group.new(attrs, &block))
  g
end

#line(x1, y1, x2, y2, attrs = {}) ⇒ Object 



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# File 'lib/taskjuggler/Painter/Primitives.rb', line 65

def line(x1, y1, x2, y2, attrs = {})
  attrs[:x1] = x1
  attrs[:y1] = y1
  attrs[:x2] = x2
  attrs[:y2] = y2
  @elements << (l = Line.new(attrs))
  l
end

#points(arr) ⇒ Object 



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# File 'lib/taskjuggler/Painter/Primitives.rb', line 39

def points(arr)
  Points.new(arr)
end

#polyline(points, attrs = {}) ⇒ Object 



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# File 'lib/taskjuggler/Painter/Primitives.rb', line 74

def polyline(points, attrs = {})
  attrs[:points] = points.is_a?(Array) ? Points.new(points) : points
  @elements << (l = PolyLine.new(attrs))
  l
end

#rect(x, y, width, height, attrs = {}) ⇒ Object 



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# File 'lib/taskjuggler/Painter/Primitives.rb', line 80

def rect(x, y, width, height, attrs = {})
  attrs[:x] = x
  attrs[:y] = y
  attrs[:width] = width
  attrs[:height] = height
  @elements << (r = Rect.new(attrs))
  r
end

#text(x, y, str, attrs = {}) ⇒ Object 



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# File 'lib/taskjuggler/Painter/Primitives.rb', line 89

def text(x, y, str, attrs = {})
  attrs[:x] = x
  attrs[:y] = y
  @elements << (t = Text.new(str, attrs))
  t
end