Class: Doodl::PluggableRenderer

Inherits:
Object
  • Object
show all
Defined in:
lib/jruby/renderer.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize ⇒ PluggableRenderer

Returns a new instance of PluggableRenderer.



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# File 'lib/jruby/renderer.rb', line 30

def initialize
  super
  @paint_iterations = true
  @transform = AffineTransform.new
  @node_shapes, @edge_shapes = [], []
  set_defaults
  setBackground(Color::black)
  setDoubleBuffered(true)
  @tooltip = TooltipMouseListener.new
  addMouseMotionListener(@tooltip)
end

Instance Attribute Details

#edge_shapes ⇒ Object (readonly)

Returns the value of attribute edge_shapes.



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# File 'lib/jruby/renderer.rb', line 28

def edge_shapes
  @edge_shapes
end

#node_shapes ⇒ Object (readonly)

Returns the value of attribute node_shapes.



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# File 'lib/jruby/renderer.rb', line 28

def node_shapes
  @node_shapes
end

#paint_iterations=(value) ⇒ Object (writeonly)

Sets the attribute paint_iterations

Parameters:

  • value —

    the value to set the attribute paint_iterations to.



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# File 'lib/jruby/renderer.rb', line 27

def paint_iterations=(value)
  @paint_iterations = value
end

Instance Method Details

#center ⇒ Object 



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# File 'lib/jruby/renderer.rb', line 203

def center
  Location.new(width/2.0, height/2.0)
end

#center_on_node(node) ⇒ Object 



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# File 'lib/jruby/renderer.rb', line 182

def center_on_node(node)
  @transform.translate(-@transform.getTranslateX, -@transform.getTranslateY)
  location = @layout[node]
  @transform.translate(-location.x + center.x, -location.y + center.y)
  repaint
end

#edge_label_position(edge, label_layout) ⇒ Object 



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# File 'lib/jruby/renderer.rb', line 270

def edge_label_position(edge, label_layout)
  @edge_label_position_function.call(@graph, @layout, edge, label_layout)
end

#edge_label_position_function(&block) ⇒ Object

Raises:

  • (ArgumentError) 


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# File 'lib/jruby/renderer.rb', line 265

def edge_label_position_function(&block)
  raise ArgumentError unless block_given?
  @edge_label_position_function = block
end

#edge_label_position_function=(function) ⇒ Object 



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# File 'lib/jruby/renderer.rb', line 261

def edge_label_position_function=(function)
  @edge_label_position_function = function
end

#height ⇒ Object 



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# File 'lib/jruby/renderer.rb', line 211

def height
  return self.getHeight
end

#move(x, y, smooth = true) ⇒ Object 



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# File 'lib/jruby/renderer.rb', line 178

def move(x, y, smooth = true)
  repaint
end

#node_label_position(node, label_layout) ⇒ Object 



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# File 'lib/jruby/renderer.rb', line 257

def node_label_position(node, label_layout)
  @node_label_position_function.call(@graph, @layout, node, label_layout)
end

#node_label_position_function(&block) ⇒ Object

Raises:

  • (ArgumentError) 


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# File 'lib/jruby/renderer.rb', line 252

def node_label_position_function(&block)
  raise ArgumentError unless block_given?
  @node_label_position_function = block
end

#node_label_position_function=(function) ⇒ Object 



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# File 'lib/jruby/renderer.rb', line 248

def node_label_position_function=(function)
  @node_label_position_function = function
end

#paint_arrow_head(g, edge) ⇒ Object 



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# File 'lib/jruby/renderer.rb', line 103

def paint_arrow_head(g, edge)
  at = g.getTransform
  loc_and_angle = arrow_head_properties(g, edge)
  if loc_and_angle
    g.translate(loc_and_angle[0].x, loc_and_angle[0].y)
    g.rotate(loc_and_angle[1])
    g.setColor arrow_head_fill_color(edge)
    shape = arrow_head_shape(edge)
    g.fill(shape)
    g.setStroke arrow_head_stroke(edge)
    g.setColor arrow_head_stroke_color(edge)
    g.draw(shape)
    g.setTransform(at)
  end
end

#paint_edge(g, edge) ⇒ Object 



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# File 'lib/jruby/renderer.rb', line 92

def paint_edge(g, edge)
  if edge_predicate(edge) and node_predicate(edge.source) and node_predicate(edge.target)
    g.setColor edge_stroke_color(edge)
    shape = edge_shape(edge)
    @edge_shapes << [edge, shape]
    g.setStroke edge_stroke(edge)
    g.draw(shape)
    paint_arrow_head(g, edge) if arrow_head_predicate(edge)
  end
end

#paint_edge_label(g, edge) ⇒ Object 



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# File 'lib/jruby/renderer.rb', line 128

def paint_edge_label(g, edge)
  if edge_label_predicate(edge) and text = edge_label_string(edge)
    g.setColor edge_label_color(edge)
    layout = TextLayout.new(text, g.getFont, g.getFontRenderContext)
    position = edge_label_position(edge, layout)
    layout.draw(g, position.x, position.y)
  end
end

#paint_edge_labels(g) ⇒ Object 



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# File 'lib/jruby/renderer.rb', line 170

def paint_edge_labels(g)
  @graph.each_edge { |edge| paint_edge_label(g, edge) }
end

#paint_edges(g) ⇒ Object 



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# File 'lib/jruby/renderer.rb', line 162

def paint_edges(g)
  @graph.each_edge { |edge| paint_edge(g, edge) }
end

#paint_graph(g) ⇒ Object 



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# File 'lib/jruby/renderer.rb', line 68

def paint_graph(g)
  if @graph and @layout
    @node_shapes.clear
    @edge_shapes.clear
    paint_edges(g)
    paint_nodes(g)
    paint_node_labels(g)
    paint_edge_labels(g)
    paint_tooltip(g)
  end
end

#paint_iterations? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/jruby/renderer.rb', line 174

def paint_iterations?
  @paint_iterations
end

#paint_node(g, node) ⇒ Object 



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# File 'lib/jruby/renderer.rb', line 80

def paint_node(g, node)
  if node_predicate(node)
    shape = node_shape(node)
    @node_shapes << [node, shape]
    g.setColor node_fill_color(node)
    g.fill(shape)
    g.setColor node_stroke_color(node)
    g.setStroke node_stroke(node)
    g.draw(shape)
  end
end

#paint_node_label(g, node) ⇒ Object 



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# File 'lib/jruby/renderer.rb', line 119

def paint_node_label(g, node)
  if node_label_predicate(node) and text = node_label_string(node)
    g.setColor node_label_color(node)
    layout = TextLayout.new(text, g.getFont, g.getFontRenderContext)
    position = node_label_position(node, layout)
    layout.draw(g, position.x, position.y)
  end
end

#paint_node_labels(g) ⇒ Object 



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# File 'lib/jruby/renderer.rb', line 166

def paint_node_labels(g)
  @graph.each_node { |node| paint_node_label(g, node) }
end

#paint_nodes(g) ⇒ Object 



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# File 'lib/jruby/renderer.rb', line 158

def paint_nodes(g)
  @graph.each_node { |node| paint_node(g, node) }
end

#paint_tooltip(g) ⇒ Object 



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# File 'lib/jruby/renderer.rb', line 137

def paint_tooltip(g)
  element = @tooltip.element
  if element and tooltip_predicate(element)
    temp = g.getTransform
    layout = TextLayout.new(tooltip_string(element), g.getFont, g.getFontRenderContext)
    rect = layout.getBounds
    rect.x -= 3
    rect.y -= 3
    rect.width += 5
    rect.height += 5
    g.translate(@tooltip.position.x + 15, @tooltip.position.y - 15)
    g.setColor(tooltip_fill_color(element))
    g.fill(rect)
    g.setColor(tooltip_stroke_color(element))
    g.setStroke(tooltip_stroke(element))
    g.draw(rect)
    layout.draw(g, 0, 0)
    g.setTransform(temp)
  end
end

#paintComponent(g) ⇒ Object 



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# File 'lib/jruby/renderer.rb', line 57

def paintComponent(g)
  g.setColor(getBackground)
  g.fill(Rectangle2D::Double.new(0, 0, width, height))
  # g.setFont(Font.new("Gill Sans", Font::BOLD, 14))
  rh =  RenderingHints.new(
    RenderingHints.new(RenderingHints::KEY_ANTIALIASING, RenderingHints::VALUE_ANTIALIAS_ON))
  g.setTransform(@transform)
  g.setRenderingHints(rh)
  paint_graph(g)
end

#set_defaults ⇒ Object 



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# File 'lib/jruby/renderer.rb', line 274

def set_defaults
  node_shape_function { |g, l, n| Ellipse2D::Double.new(l[n].x-10, l[n].y-10, 20, 20) }
  node_stroke_function { BasicStroke.new(2) }
  node_predicate_function { true }
  node_stroke_color_function { Color::white }
  node_fill_color_function { Color::black }
  node_label_predicate_function { false }
  node_label_string_function { |g, l, n| n.to_s }
  node_label_position_function do |g, l, node, layout|
    nb = node_shape(node).getBounds2D
    lb = layout.getBounds
    Point2D::Double.new(nb.getCenterX-lb.getCenterX, nb.getCenterY-lb.getCenterY)
  end
  node_label_color_function { Color::white }

  edge_shape_function { |g, l, e| Line2D::Double.new(l[e.source].x, l[e.source].y, l[e.target].x, l[e.target].y) }
  edge_predicate_function { true }
  edge_stroke_function { |g, l, e| BasicStroke.new(2) }
  edge_stroke_color_function { Color::white }
  edge_fill_color_function { Color::white }

  edge_label_predicate_function { true }
  edge_label_string_function { |g, l, e| g.edge_data(:text)[e] if g.has_edge_data_key?(:text) }
  edge_label_color_function { Color::white }
  edge_label_position_function do |g, l, edge, layout|
    shape = edge_shape(edge)
    edge_bounds = shape.getBounds2D
    label_bounds = layout.getBounds
    ex = edge_bounds.getCenterX
    ey = edge_bounds.getCenterY
    lx = label_bounds.getCenterX
    ly = label_bounds.getCenterY
    v = Location.new(l[edge.source], l[edge.target])
    v.normalize!
    v.rotate!(90)
    v.mul!(15)
    v.add!(ex-lx, ey-ly)
  end

  arrow_head_shape_function { Polygon.new([0, 4, 0, -4, 0].to_java(:int), [0, 14, 11, 14, 0].to_java(:int), 5) }
  arrow_head_predicate_function { |g, l, e| e.directed? }
  arrow_head_stroke_function { BasicStroke.new(2) }
  arrow_head_stroke_color_function { Color::white }
  arrow_head_fill_color_function { Color::white }

  tooltip_string_function { |g, l, element| element.to_s }
  tooltip_stroke_function { |g, l, element| BasicStroke.new(1) }
  tooltip_stroke_color_function { |g, l, element| Color::WHITE }
  tooltip_fill_color_function { |g, l, element| Color::BLACK }
  tooltip_predicate_function { true }
end

#update_layout(layout) ⇒ Object 



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# File 'lib/jruby/renderer.rb', line 42

def update_layout(layout)
  if (paint_iterations? or layout.finished?)
    @layout, @graph = layout, layout.graph
    @transform = AffineTransform.new
    if SwingUtilities.isEventDispatchThread
      repaint
    else
      SwingUtilities.invokeAndWait(java.lang.Runnable.impl do
        repaint
        java.lang.Thread.sleep(20)
      end)
    end
  end
end

#width ⇒ Object 



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# File 'lib/jruby/renderer.rb', line 207

def width
  return self.getWidth
end

#zoom(f) ⇒ Object 



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# File 'lib/jruby/renderer.rb', line 189

def zoom(f)
  @transform.translate(center.x, center.y)
  @transform.scale(f, f)
  @transform.translate(-center.x, -center.y)
  repaint
end

#zoom_absolute(f) ⇒ Object 



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# File 'lib/jruby/renderer.rb', line 196

def zoom_absolute(f)
  @transform.translate(center.x, center.y)
  @transform.scale(f/@transform.getScaleX, f/@transform.getScaleY)
  @transform.translate(-center.x, -center.y)
  repaint
end