module 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.

Constants

FillAndStrokeAttrs
FillAttrs
StrokeAttrs
TextAttrs

Public Instance Methods

circle(cx, cy, r, attrs = {}) click to toggle source
# File lib/taskjuggler/Painter/Primitives.rb, line 47
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 34
def color(*args)
  Color.new(*args)
end
ellipse(cx, cy, rx, ry, attrs = {}) click to toggle source
# File lib/taskjuggler/Painter/Primitives.rb, line 55
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 42
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 64
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 38
def points(arr)
  Points.new(arr)
end
polyline(points, attrs = {}) click to toggle source
# File lib/taskjuggler/Painter/Primitives.rb, line 73
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 79
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 88
def text(x, y, str, attrs = {})
  attrs[:x] = x
  attrs[:y] = y
  @elements << (t = Text.new(str, attrs))
  t
end