Class: Writexlsx::Shape

Inherits:
Object
  • Object
show all
Defined in:
lib/write_xlsx/shape.rb

Overview

Shape - A class for writing Excel shapes.

Used in conjunction with WriteXLSX.

Copyright 2000-2012, John McNamara, [email protected] Converted to ruby by Hideo NAKAMURA, [email protected]

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(properties = {}) ⇒ Shape

Returns a new instance of Shape.



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# File 'lib/write_xlsx/shape.rb', line 26

def initialize(properties = {})
  @writer = Package::XMLWriterSimple.new
  @name   = nil
  @type   = 'rect'

  # Is a Connector shape. 1/0 Value is a hash lookup from type.
  @connect = 0

  # Is a Drawing. Always 0, since a single shape never fills an entire sheet.
  @drawing = 0

  # OneCell or Absolute: options to move and/or size with cells.
  @edit_as = nil

  # Auto-incremented, unless supplied by user.
  @id = 0

  # Shape text (usually centered on shape geometry).
  @text = 0

  # Shape stencil mode.  A copy (child) is created when inserted.
  # The link to parent is broken.
  @stencil = 1

  # Index to _shapes array when inserted.
  @element = -1

  # Shape ID of starting connection, if any.
  @start = nil

  # Shape vertex, starts at 0, numbered clockwise from 12 o'clock.
  @start_index = nil

  @end       = nil
  @end_index = nil

  # Number and size of adjustments for shapes (usually connectors).
  @adjustments = []

  # Start and end sides. t)op, b)ottom, l)eft, or r)ight.
  @start_side = ''
  @end_side   = ''

  # Flip shape Horizontally. eg. arrow left to arrow right.
  @flip_h = 0

  # Flip shape Vertically. eg. up arrow to down arrow.
  @flip_v = 0

  # shape rotation (in degrees 0-360).
  @rotation = 0

  # An alternate way to create a text box, because Excel allows it.
  # It is just a rectangle with text.
  @tx_box = false

  # Shape outline colour, or 0 for noFill (default black).
  @line = '000000'

  # Line type: dash, sysDot, dashDot, lgDash, lgDashDot, lgDashDotDot.
  @line_type = ''

  # Line weight (integer).
  @line_weight = 1

  # Shape fill colour, or 0 for noFill (default noFill).
  @fill = 0

  # Formatting for shape text, if any.
  @format = {}

  # copy of colour palette table from Workbook.pm.
  @palette = []

  # Vertical alignment: t, ctr, b.
  @valign = 'ctr'

  # Alignment: l, ctr, r, just
  @align = 'ctr'

  @x_offset = 0
  @y_offset = 0

  # Scale factors, which also may be set when the shape is inserted.
  @scale_x = 1
  @scale_y = 1

  # Default size, which can be modified and/or scaled.
  @width  = 50
  @height = 50

  # Initial assignment. May be modified when prepared.
  @column_start = 0
  @row_start    = 0
  @x1           = 0
  @y1           = 0
  @column_end   = 0
  @row_end      = 0
  @x2           = 0
  @y2           = 0
  @x_abs        = 0
  @y_abs        = 0

  set_properties(properties)
end

Instance Attribute Details

#adjustments ⇒ Object

Returns the value of attribute adjustments.



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# File 'lib/write_xlsx/shape.rb', line 19

def adjustments
  @adjustments
end

#align ⇒ Object (readonly)

Returns the value of attribute align.



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# File 'lib/write_xlsx/shape.rb', line 17

def align
  @align
end

#column_end ⇒ Object

Returns the value of attribute column_end.



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# File 'lib/write_xlsx/shape.rb', line 20

def column_end
  @column_end
end

#column_start ⇒ Object

Returns the value of attribute column_start.



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# File 'lib/write_xlsx/shape.rb', line 20

def column_start
  @column_start
end

#connect ⇒ Object

Returns the value of attribute connect.



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# File 'lib/write_xlsx/shape.rb', line 18

def connect
  @connect
end

#drawing ⇒ Object (readonly)

Returns the value of attribute drawing.



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# File 'lib/write_xlsx/shape.rb', line 15

def drawing
  @drawing
end

#edit_as ⇒ Object (readonly)

Returns the value of attribute edit_as.



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# File 'lib/write_xlsx/shape.rb', line 15

def edit_as
  @edit_as
end

#element ⇒ Object

Returns the value of attribute element.



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# File 'lib/write_xlsx/shape.rb', line 23

def element
  @element
end

#end ⇒ Object

Returns the value of attribute end.



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# File 'lib/write_xlsx/shape.rb', line 18

def end
  @end
end

#end_index ⇒ Object

Returns the value of attribute end_index.



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# File 'lib/write_xlsx/shape.rb', line 21

def end_index
  @end_index
end

#end_side ⇒ Object

Returns the value of attribute end_side.



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# File 'lib/write_xlsx/shape.rb', line 24

def end_side
  @end_side
end

#fill ⇒ Object (readonly)

Returns the value of attribute fill.



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# File 'lib/write_xlsx/shape.rb', line 16

def fill
  @fill
end

#flip_h ⇒ Object

Returns the value of attribute flip_h.



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# File 'lib/write_xlsx/shape.rb', line 19

def flip_h
  @flip_h
end

#flip_v ⇒ Object

Returns the value of attribute flip_v.



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# File 'lib/write_xlsx/shape.rb', line 19

def flip_v
  @flip_v
end

#format ⇒ Object (readonly)

Returns the value of attribute format.



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# File 'lib/write_xlsx/shape.rb', line 16

def format
  @format
end

#height ⇒ Object

Returns the value of attribute height.



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# File 'lib/write_xlsx/shape.rb', line 22

def height
  @height
end

#height_emu ⇒ Object

Returns the value of attribute height_emu.



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# File 'lib/write_xlsx/shape.rb', line 23

def height_emu
  @height_emu
end

#id ⇒ Object

Returns the value of attribute id.



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# File 'lib/write_xlsx/shape.rb', line 18

def id
  @id
end

#line ⇒ Object (readonly)

Returns the value of attribute line.



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# File 'lib/write_xlsx/shape.rb', line 16

def line
  @line
end

#line_type ⇒ Object

Returns the value of attribute line_type.



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# File 'lib/write_xlsx/shape.rb', line 23

def line_type
  @line_type
end

#line_weight ⇒ Object

Returns the value of attribute line_weight.



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# File 'lib/write_xlsx/shape.rb', line 23

def line_weight
  @line_weight
end

#name ⇒ Object

Returns the value of attribute name.



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# File 'lib/write_xlsx/shape.rb', line 18

def name
  @name
end

#palette ⇒ Object

Returns the value of attribute palette.



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# File 'lib/write_xlsx/shape.rb', line 19

def palette
  @palette
end

#rotation ⇒ Object

Returns the value of attribute rotation.



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# File 'lib/write_xlsx/shape.rb', line 18

def rotation
  @rotation
end

#row_end ⇒ Object

Returns the value of attribute row_end.



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# File 'lib/write_xlsx/shape.rb', line 20

def row_end
  @row_end
end

#row_start ⇒ Object

Returns the value of attribute row_start.



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# File 'lib/write_xlsx/shape.rb', line 20

def row_start
  @row_start
end

#scale_x ⇒ Object

Returns the value of attribute scale_x.



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# File 'lib/write_xlsx/shape.rb', line 22

def scale_x
  @scale_x
end

#scale_y ⇒ Object

Returns the value of attribute scale_y.



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# File 'lib/write_xlsx/shape.rb', line 22

def scale_y
  @scale_y
end

#start ⇒ Object

Returns the value of attribute start.



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# File 'lib/write_xlsx/shape.rb', line 18

def start
  @start
end

#start_index ⇒ Object

Returns the value of attribute start_index.



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# File 'lib/write_xlsx/shape.rb', line 21

def start_index
  @start_index
end

#start_side ⇒ Object

Returns the value of attribute start_side.



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# File 'lib/write_xlsx/shape.rb', line 24

def start_side
  @start_side
end

#stencil ⇒ Object

Returns the value of attribute stencil.



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# File 'lib/write_xlsx/shape.rb', line 19

def stencil
  @stencil
end

#text ⇒ Object

Returns the value of attribute text.



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# File 'lib/write_xlsx/shape.rb', line 19

def text
  @text
end

#tx_box ⇒ Object (readonly)

Returns the value of attribute tx_box.



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# File 'lib/write_xlsx/shape.rb', line 16

def tx_box
  @tx_box
end

#type ⇒ Object

Returns the value of attribute type.



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# File 'lib/write_xlsx/shape.rb', line 15

def type
  @type
end

#valign ⇒ Object (readonly)

Returns the value of attribute valign.



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# File 'lib/write_xlsx/shape.rb', line 17

def valign
  @valign
end

#width ⇒ Object

Returns the value of attribute width.



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# File 'lib/write_xlsx/shape.rb', line 22

def width
  @width
end

#width_emu ⇒ Object

Returns the value of attribute width_emu.



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# File 'lib/write_xlsx/shape.rb', line 23

def width_emu
  @width_emu
end

#x1 ⇒ Object

Returns the value of attribute x1.



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# File 'lib/write_xlsx/shape.rb', line 21

def x1
  @x1
end

#x2 ⇒ Object

Returns the value of attribute x2.



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# File 'lib/write_xlsx/shape.rb', line 21

def x2
  @x2
end

#x_abs ⇒ Object

Returns the value of attribute x_abs.



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# File 'lib/write_xlsx/shape.rb', line 21

def x_abs
  @x_abs
end

#x_offset ⇒ Object

Returns the value of attribute x_offset.



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# File 'lib/write_xlsx/shape.rb', line 22

def x_offset
  @x_offset
end

#y1 ⇒ Object

Returns the value of attribute y1.



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# File 'lib/write_xlsx/shape.rb', line 21

def y1
  @y1
end

#y2 ⇒ Object

Returns the value of attribute y2.



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# File 'lib/write_xlsx/shape.rb', line 21

def y2
  @y2
end

#y_abs ⇒ Object

Returns the value of attribute y_abs.



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# File 'lib/write_xlsx/shape.rb', line 21

def y_abs
  @y_abs
end

#y_offset ⇒ Object

Returns the value of attribute y_offset.



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# File 'lib/write_xlsx/shape.rb', line 22

def y_offset
  @y_offset
end

Instance Method Details

#auto_locate_connectors(shapes, shape_hash) ⇒ Object

Re-size connector shapes if they are connected to other shapes.



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# File 'lib/write_xlsx/shape.rb', line 216

def auto_locate_connectors(shapes, shape_hash)
  # Valid connector shapes.
  connector_shapes = {
    :straightConnector => 1,
    :Connector         => 1,
    :bentConnector     => 1,
    :curvedConnector   => 1,
    :line              => 1
  }

  shape_base = @type.chop.to_sym # Remove the number of segments from end of type.
  @connect = connector_shapes[shape_base] ? 1 : 0
  return if @connect == 0

  # Both ends have to be connected to size it.
  return if @start == 0 && @end == 0

  # Both ends need to provide info about where to connect.
  return if @start_side == 0 && @end_side == 0

  sid = @start
  eid = @end

  slink_id = shape_hash[sid] || 0
  sls      = shapes.fetch(slink_id, Shape.new)
  elink_id = shape_hash[eid] || 0
  els      = shapes.fetch(elink_id, Shape.new)

  # Assume shape connections are to the middle of an object, and
  # not a corner (for now).
  connect_type = @start_side + @end_side
  smidx        = sls.x_offset + sls.width / 2
  emidx        = els.x_offset + els.width / 2
  smidy        = sls.y_offset + sls.height / 2
  emidy        = els.y_offset + els.height / 2
  netx         = (smidx - emidx).abs
  nety         = (smidy - emidy).abs

  if connect_type == 'bt'
    sy = sls.y_offset + sls.height
    ey = els.y_offset

    @width = (emidx - smidx).to_i.abs
    @x_offset = [smidx, emidx].min.to_i
    @height =
      (els.y_offset - (sls.y_offset + sls.height)).to_i.abs
    @y_offset =
      [sls.y_offset + sls.height, els.y_offset].min.to_i
    @flip_h = smidx < emidx ? 1 : 0
    @rotation = 90

    if sy > ey
      @flip_v = 1

      # Create 3 adjustments for an end shape vertically above a
      # start @ Adjustments count from the upper left object.
      if @adjustments.empty?
        @adjustments = [-10, 50, 110]
      end
      @type = 'bentConnector5'
    end
  elsif connect_type == 'rl'
    @width =
      (els.x_offset - (sls.x_offset + sls.width)).to_i.abs
    @height = (emidy - smidy).to_i.abs
    @x_offset =
      [sls.x_offset + sls.width, els.x_offset].min
    @y_offset = [smidy, emidy].min

    @flip_h = 1 if smidx < emidx && smidy > emidy
    @flip_h = 1 if smidx > emidx && smidy < emidy

    if smidx > emidx
      # Create 3 adjustments for an end shape to the left of a
      # start @
      if @adjustments.empty?
        @adjustments = [-10, 50, 110]
      end
      @type = 'bentConnector5'
    end
  end
end

#calc_position_emus(worksheet) ⇒ Object

Calculate the vertices that define the position of a shape object within the worksheet in EMUs. Save the vertices with the object.

The vertices are expressed as English Metric Units (EMUs). There are 12,700 EMUs per point. Therefore, 12,700 * 3 /4 = 9,525 EMUs per pixel.



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# File 'lib/write_xlsx/shape.rb', line 170

def calc_position_emus(worksheet)
  c_start, r_start, xx1, yy1, c_end, r_end, xx2, yy2, x_abslt, y_abslt =
    worksheet.position_object_pixels(
                           @column_start,
                           @row_start,
                           @x_offset,
                           @y_offset,
                           @width  * @scale_x,
                           @height * @scale_y,
                           @drawing
                           )

  # Now that x2/y2 have been calculated with a potentially negative
  # width/height we use the absolute value and convert to EMUs.
  @width_emu  = (@width  * 9_525).abs.to_i
  @height_emu = (@height * 9_525).abs.to_i

  @column_start = c_start.to_i
  @row_start    = r_start.to_i
  @column_end   = c_end.to_i
  @row_end      = r_end.to_i

  # Convert the pixel values to EMUs. See above.
  @x1    = (xx1 * 9_525).to_i
  @y1    = (yy1 * 9_525).to_i
  @x2    = (xx2 * 9_525).to_i
  @y2    = (yy2 * 9_525).to_i
  @x_abs = (x_abslt * 9_525).to_i
  @y_abs = (y_abslt * 9_525).to_i
end

#dimensions ⇒ Object 



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# File 'lib/write_xlsx/shape.rb', line 312

def dimensions
  [
   @column_start, @row_start,
   @x1,           @y1,
   @column_end,   @row_end,
   @x2,           @y2,
   @x_abs,        @y_abs,
   @width_emu,    @height_emu
  ]
end

#get_palette_color(index) ⇒ Object

Convert from an Excel internal colour index to a XML style #RRGGBB index based on the default or user defined values in the Workbook palette. Note: This version doesn’t add an alpha channel.



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# File 'lib/write_xlsx/shape.rb', line 153

def get_palette_color(index)
  # Adjust the colour index.
  idx = index - 8

  # Palette is passed in from the Workbook class.
  rgb = @palette[idx]

  sprintf("%02X%02X%02X", *rgb)
end

#set_position(row_start, column_start, x_offset, y_offset, x_scale, y_scale) ⇒ Object 



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# File 'lib/write_xlsx/shape.rb', line 201

def set_position(row_start, column_start, x_offset, y_offset, x_scale, y_scale)
  @row_start    = row_start
  @column_start = column_start
  @x_offset     = x_offset || 0
  @y_offset     = y_offset || 0

  # Override shape scale if supplied as an argument. Otherwise, use the
  # existing shape scale factors.
  @scale_x = x_scale if x_scale
  @scale_y = y_scale if y_scale
end

#set_properties(properties) ⇒ Object 



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# File 'lib/write_xlsx/shape.rb', line 132

def set_properties(properties)
  # Override default properties with passed arguments
  properties.each do |key, value|
    # Strip leading "-" from Tk style properties e.g. -color => 'red'.
    k = key.to_s.sub(/^-/, '')
    self.instance_variable_set("@#{key}", value)
  end
end

#validate(index) ⇒ Object

Check shape attributes to ensure they are valid.



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# File 'lib/write_xlsx/shape.rb', line 302

def validate(index)
  unless %w[l ctr r just].include?(@align)
    raise "Shape #{index} (#{@type}) alignment (#{@align}) not in ['l', 'ctr', 'r', 'just']\n"
  end

  unless %w[t ctr b].include?(@valign)
    raise "Shape #{index} (#{@type}) vertical alignment (#{@valign}) not in ['t', 'ctr', 'v']\n"
  end
end