Class: Wx::SF::EllipseShape

Inherits:
RectShape show all
Defined in:
lib/wx/shapes/shapes/ellipse_shape.rb

Overview

Class encapsulating the ellipse shape. It extends the basic rectangular shape.

Instance Method Summary collapse

Methods inherited from RectShape

#create_handles, #do_begin_handle, #do_on_handle, #fit_to_children, #get_border, #get_bounding_box, #get_fill, #get_rect_size, #on_begin_handle, #on_bottom_handle, #on_handle, #on_left_handle, #on_right_handle, #on_top_handle, #scale, #scale_rectangle, #set_border, #set_fill, #set_rect_size

Methods inherited from Shape

#accept_child, #accept_connection, #accept_currently_dragged_shapes, #accept_src_neighbour, #accept_trg_neighbour, #activate, #active?, #add_child_shape, #add_connection_point, #add_handle, #add_style, #ancestor?, #clear_accepted_childs, #clear_accepted_connections, #clear_accepted_src_neighbours, #clear_accepted_trg_neighbours, component, component_shapes, #contains_style, #create_handles, #descendant?, #do_alignment, #does_not_accept_children?, #draw, #draw_selected, #fit_to_children, #get_absolute_position, #get_accepted_children, #get_accepted_connections, #get_accepted_src_neighbours, #get_accepted_trg_neighbours, #get_assigned_connections, #get_bounding_box, #get_center, #get_child_shapes, #get_children, #get_children_recursively, #get_complete_bounding_box, #get_connection_point, #get_connection_points, #get_custom_dock_point, #get_diagram, #get_grand_parent_shape, #get_h_align, #get_h_border, #get_handle, #get_handles, #get_hover_colour, #get_nearest_connection_point, #get_neighbours, #get_parent_absolute_position, #get_parent_canvas, #get_parent_shape, #get_relative_position, #get_shape_canvas, #get_style, #get_user_data, #get_v_align, #get_v_border, #has_children, #has_selected_parent?, #include_child_shape?, #inside?, #inspect, #intersects?, #is_child_accepted, #is_connection_accepted, #is_managed, #is_manager, #is_src_neighbour_accepted, #is_trg_neighbour_accepted, lines_intersection, #lines_intersection, #move_by, #move_to, #on_begin_drag, #on_begin_handle, #on_child_dropped, #on_dragging, #on_end_drag, #on_end_handle, #on_handle, #on_import, #on_key, #on_left_click, #on_left_double_click, #on_mouse_enter, #on_mouse_leave, #on_mouse_over, #on_right_click, #on_right_double_click, #refresh, #refresh_rect, #remove_connection_point, #remove_handle, #remove_style, #scale, #scale_children, #select, #selected?, #set_custom_dock_point, #set_diagram, #set_h_align, #set_h_border, #set_hover_colour, #set_parent_shape, #set_relative_position, #set_style, #set_user_data, #set_v_align, #set_v_border, #show, #show_handles, #to_s, #update, #visible?

Constructor Details

#initialize(pos = Shape::DEFAULT::POSITION, size = RectShape::DEFAULT::SIZE, diagram: nil) ⇒ EllipseShape

Constructor.

Parameters:



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# File 'lib/wx/shapes/shapes/ellipse_shape.rb', line 13

def initialize(pos = Shape::DEFAULT::POSITION, size = RectShape::DEFAULT::SIZE, diagram: nil)
  super
end

Instance Method Details

#contains?(pos) ⇒ Boolean

Test whether the given point is inside the shape. The function can be overridden if necessary.

Parameters:

Returns:

  • (Boolean) —

    true if the point is inside the shape area, otherwise false



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# File 'lib/wx/shapes/shapes/ellipse_shape.rb', line 21

def contains?(pos)
  a = get_rect_size.x/2
  b = get_rect_size.y/2
  apos = get_absolute_position
  
  m = apos.x + a
  n = apos.y + b

  pos = pos.to_point
  (((pos.x - m)*(pos.x - m))/(a*a) + ((pos.y - n)*(pos.y - n))/(b*b)) < 1
end

#draw_highlighted(dc) ⇒ Object (protected)

Draw the shape in the highlighted mode (another shape is dragged over this shape and this shape will accept the dragged one if it will be dropped on it). The function can be overridden if necessary.

Parameters:

  • dc (Wx::DC) —

    Reference to device context where the shape will be drawn to



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# File 'lib/wx/shapes/shapes/ellipse_shape.rb', line 80

def draw_highlighted(dc)
  dc.with_pen(Wx::Pen.new(hover_colour, 2)) do
    dc.with_brush(fill) do
      dc.draw_ellipse(get_absolute_position.to_point, @rect_size.to_size)
    end
  end
end

#draw_hover(dc) ⇒ Object (protected)

Draw the shape in the hover mode (the mouse cursor is above the shape). The function can be overridden if necessary.

Parameters:

  • dc (Wx::DC) —

    Reference to device context where the shape will be drawn to



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# File 'lib/wx/shapes/shapes/ellipse_shape.rb', line 68

def draw_hover(dc)
  dc.with_pen(Wx::Pen.new(hover_colour, 1)) do
    dc.with_brush(fill) do
      dc.draw_ellipse(get_absolute_position.to_point, @rect_size.to_size)
    end
  end
end

#draw_normal(dc) ⇒ Object (protected)

Draw the shape in the normal way. The function can be overridden if necessary.

Parameters:

  • dc (Wx::DC) —

    Reference to device context where the shape will be drawn to



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# File 'lib/wx/shapes/shapes/ellipse_shape.rb', line 57

def draw_normal(dc)
  dc.with_pen(border) do
    dc.with_brush(fill) do
      dc.draw_ellipse(get_absolute_position.to_point, @rect_size.to_size)
    end
  end
end

#draw_shadow(dc) ⇒ Object (protected)

Draw shadow under the shape. The function can be overridden if necessary.

Parameters:

  • dc (Wx::DC) —

    Reference to device context where the shadow will be drawn to



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# File 'lib/wx/shapes/shapes/ellipse_shape.rb', line 90

def draw_shadow(dc)
  if fill.style != Wx::BrushStyle::BRUSHSTYLE_TRANSPARENT
    dc.with_pen(Wx::TRANSPARENT_PEN) do
      dc.with_brush(get_parent_canvas.get_shadow_fill) do
        dc.draw_ellipse((get_absolute_position + get_parent_canvas.get_shadow_offset).to_point,
                        @rect_size.to_size)
      end
    end
  end
end

#get_border_point(start, end_pt) ⇒ Wx::RealPoint

Get intersection point of the shape border and a line leading from ‘start’ point to ‘end_pt’ point. The function can be overridden if necessary.

Parameters:

  • start (Wx::RealPoint) —

    Starting point of the virtual intersection line

  • end_pt (Wx::RealPoint) —

    Ending point of the virtual intersection line

Returns:



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# File 'lib/wx/shapes/shapes/ellipse_shape.rb', line 38

def get_border_point(start, end_pt)
  start = start.to_real_point; end_pt.to_real_point
  dist = start.distance_to(end_pt)
  center = get_absolute_position + [@rect_size.x/2, @rect_size.y/2]

  if dist != 0.0
    src_dx = @rect_size.x/2*(end_pt.x-start.x)/dist - (start.x-center.x)
    src_dy = @rect_size.y/2*(end_pt.y-start.y)/dist - (start.y-center.y)

    Wx::RealPoint.new(start.x + src_dx, start.y + src_dy)
  else
    center
  end
end