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 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) click to toggle source

# File lib/taskjuggler/Painter/Primitives.rb, line 35
def color(*args)
  Color.new(*args)
end

ellipse(cx, cy, rx, ry, attrs = {}) click to toggle source

# 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) click to toggle source

# 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 = {}) click to toggle source

# 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) click to toggle source

# File lib/taskjuggler/Painter/Primitives.rb, line 39
def points(arr)
  Points.new(arr)
end

polyline(points, attrs = {}) click to toggle source

# 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 = {}) click to toggle source

# 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 = {}) click to toggle source

# 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