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TaskJuggler::Painter::Primitives

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.

Public Instance Methods

circle(cx, cy, r, attrs = {}) click to toggle source
# File lib/taskjuggler/Painter/Primitives.rb, line 45
def circle(cx, cy, r, attrs = {})
  attrs[:cx] = cx
  attrs[:cy] = cy
  attrs[:r] = r
  @elements << (c = Circle.new(attrs))
  c
end
color(*args) click to toggle source
# File lib/taskjuggler/Painter/Primitives.rb, line 32
def color(*args)
  Color.new(*args)
end
ellipse(cx, cy, rx, ry, attrs = {}) click to toggle source
# File lib/taskjuggler/Painter/Primitives.rb, line 53
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) click to toggle source
# File lib/taskjuggler/Painter/Primitives.rb, line 40
def group(attrs = {}, &block)
  @elements << (g = Group.new(attrs, &block))
  g
end
line(x1, y1, x2, y2, attrs = {}) click to toggle source
# File lib/taskjuggler/Painter/Primitives.rb, line 62
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) click to toggle source
# File lib/taskjuggler/Painter/Primitives.rb, line 36
def points(arr)
  Points.new(arr)
end
polyline(points, attrs = {}) click to toggle source
# File lib/taskjuggler/Painter/Primitives.rb, line 71
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 = {}) click to toggle source
# File lib/taskjuggler/Painter/Primitives.rb, line 77
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 = {}) click to toggle source
# File lib/taskjuggler/Painter/Primitives.rb, line 86
def text(x, y, str, attrs = {})
  attrs[:x] = x
  attrs[:y] = y
  @elements << (t = Text.new(str, attrs))
  t
end

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