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 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) ⇒ Object 



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# File 'lib/taskjuggler/Painter/Primitives.rb', line 34

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 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) ⇒ Object 



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# 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 = {}) ⇒ Object 



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# 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) ⇒ Object 



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# File 'lib/taskjuggler/Painter/Primitives.rb', line 38

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

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



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# 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 = {}) ⇒ Object 



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# 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 = {}) ⇒ Object 



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# 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