Class: OpenFlashChart

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

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize ⇒ OpenFlashChart

Returns a new instance of OpenFlashChart.



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# File 'lib/open_flash_chart.rb', line 2

def initialize
  @data = []
  @x_labels = []
  @y_min = 0
  @y_max = 20
  @y_label_steps = 5
  @title = ""
  @title_style = ""
  @title_size = 30
  @x_tick_size = -1
  @y2_max = ''
  @y2_min = ''

  # GRID styles
  @y_axis_color = @x_axis_color = @x_grid_color = @y_grid_color = ""
  @x_axis_3d = ''
  @x_axis_steps = -1
  @y2_axis_color = ''

  # AXIS LABEL styles
  @x_label_style = ''
  @y_label_style = ''
  @y_label_style_right = ''

  # AXIS LEGEND styles
  @x_legend = ''
  @y_legend = ''
  @y_legend_right = ''

  @lines = []
  @y2_lines = []
  @line_default = "&line=3,#87421F" + "& \n"
	
  @bg_color = ''
  @bg_image = ''

  @inner_bg_color = ''
  @inner_bg_color_2 = ''
  @inner_bg_angle = ''

  # PIE chart
  @pie = ''
  @pie_values = ''
  @pie_colors = ''
  @pie_labels = ''

  @tool_tip = ''
end

Class Method Details

.swf_object(width, height, url) ⇒ Object 



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# File 'lib/open_flash_chart.rb', line 298

def self.swf_object(width, height, url)
  url     = CGI::escape(url)
  output  = "<object classid=\"clsid:d27cdb6e-ae6d-11cf-96b8-444553540000\" codebase=\"http://fpdownload.macromedia.com/pub/shockwave/cabs/flash/swflash.cab#version=8,0,0,0\" width=\"#{width}\" height=\"#{height}\" id=\"graph\" align=\"middle\">"
  output += '<param name="allowScriptAccess" value="sameDomain" />'
  output += "<param name=\"movie\" value=\"/open-flash-chart.swf?width=#{width.to_s} &height=#{height.to_s} &data=#{url}\" /><param name=\"quality\" value=\"high\" /><param name=\"bgcolor\" value=\"#FFFFFF\" />"
  output += '<embed src="/open-flash-chart.swf?width=' + width.to_s + '&height=' + height.to_s + '&data=' + url.to_s + '" quality="high" bgcolor="#FFFFFF" width="' +  width.to_s + '" height="' + height.to_s + '" name="open-flash-chart" align="middle" allowScriptAccess="sameDomain" type="application/x-shockwave-flash" pluginspage="http://www.macromedia.com/go/getflashplayer" />'
  output += '</object>'
  return output
end

Instance Method Details

#area_hollow(width, dot_size, color, alpha, text = '', font_size = '') ⇒ Object 



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# File 'lib/open_flash_chart.rb', line 155

def area_hollow(width, dot_size, color, alpha, text='', font_size='')
  temp  = "&area_hollow"
  temp += '_' + (@lines.size + 1).to_s if @lines.size > 0
  temp += "=#{width},#{dot_size},#{color},#{alpha}"
  temp += ",#{text},#{font_size}" if text.size > 0
  temp += "& \n"

  @lines << temp
end

#attach_to_y_right_axis(data_number) ⇒ Object 



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# File 'lib/open_flash_chart.rb', line 81

def attach_to_y_right_axis(data_number)
  @y2_lines << data_number
end

#line(width, color = '', text = '', size = -1,, circles = -1)) ⇒ Object 



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# File 'lib/open_flash_chart.rb', line 127

def line(width, color='', text='', size=-1, circles=-1)
  temp  = '&line'
  temp += '_' + (@lines.size + 1).to_s if @lines.size > 0
  temp += '='
  temp += width.to_s			    if width > 0
  temp += ',' + color 		    if width > 0
  temp += ',' + text          if text.size > 0
  temp += ',' + size.to_s     if text.size > 0
  temp += ',' + circles.to_s 	if circles > 0
  temp += "& \n"

  @lines << temp
end

#pie(alpha, line_color, label_color) ⇒ Object 



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# File 'lib/open_flash_chart.rb', line 203

def pie(alpha, line_color, label_color)
  @pie = "#{alpha},#{line_color},#{label_color}"
end

#pie_slice_colors(colors) ⇒ Object 



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# File 'lib/open_flash_chart.rb', line 212

def pie_slice_colors(colors)
  @pie_colors = colors.join(",")
end

#pie_values(values, labels) ⇒ Object 



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# File 'lib/open_flash_chart.rb', line 207

def pie_values(values, labels)
  @pie_values = values.join(',')
  @pie_labels = labels.join(',')
end

#render ⇒ Object 



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# File 'lib/open_flash_chart.rb', line 216

def render
  temp  = ""

  {"title" 					=> [@title, @title_style],
    "x_legend"				=> [@x_legend, @x_legend_size, @x_legend_color],
    "x_ticks"				=> [@x_tick_size],
    "x_axis_steps"   => [@x_axis_steps, @x_axis_3d],
    "bg_colour" 			=> [@bg_color],
    "tool_tip"				=> [@tool_tip]
  }.each do |k,v|
    next if (v[0].class == String ? v[0].size <= 0 : v[0] && v[0] < 0)
    temp += "&#{k}="
    # added compact to remove nil values from the array
    temp += v.compact.join(",")
    temp += "& \n"
  end

  temp += @x_label_style if @x_label_style.size > 0

  %w(y_legend y_legend_right).each do |x|
    temp += self.instance_variable_get("@#{x}")
    temp += "," + self.instance_variable_get("@#{x}_size").to_s if 
    self.instance_variable_get("@#{x}_size")
    temp += "," + self.instance_variable_get("@#{x}_color") if 
    self.instance_variable_get("@#{x}_color")

  end

  temp += "&y_ticks=5,10," + "#{@y_label_steps}& \n"

  if @lines.size == 0
    temp += @line_default
  else
    temp += @lines.to_s
  end

  temp += @data.to_s

  if @y2_lines.size > 0
    temp += "&y2_lines="
    temp += @y2_lines.join(",")
    temp += "& \n"
    temp += "&show_y2=true& \n"
  end

  temp += "&x_labels=#{@x_labels.join(',')}& \n" if @x_labels.size > 0

  temp += "&y_min=#{@y_min}& \n"
  temp += "&y_max=#{@y_max}& \n"

  if @bg_image.size > 0
    temp += "&bg_image=#{@bg_image}& \n"
    temp += "&bg_image_x=#{@bg_image_x}& \n"
    temp += "&bg_image_y=#{@bg_image_y}& \n"
  end

  %w(x y).each do |axis|
    if self.instance_variable_get("@#{axis}_axis_color").size > 0
      temp += "&#{axis}_axis_colour=#{self.instance_variable_get("@#{axis}_axis_color")}& \n"
      temp += "&#{axis}_grid_colour=#{self.instance_variable_get("@#{axis}_grid_color")}& \n"
      temp += "&#{axis}2_axis_colour=#{self.instance_variable_get("@#{axis}2_axis_color")}& \n" if axis == 'y'
    end
  end
  if @inner_bg_color.size > 0
    temp += "&inner_background=#{@inner_bg_color}"
    if @inner_bg_color_2.size > 0
      temp += "," + @inner_bg_color_2
      temp += "," + @inner_bg_angle
    end
    temp += "& \n"
  end

  if @pie.size > 0
    temp += "&pie=#{@pie}& \n"
    temp += "&values=#{@pie_values}& \n"
    temp += "&pie_labels=#{@pie_labels}& \n"
    temp += "&colours=#{@pie_colors}& \n"
  end

  return temp
end

#set_bg_image(url, x = 'center', y = 'center') ⇒ Object 



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# File 'lib/open_flash_chart.rb', line 75

def set_bg_image(url, x='center', y='center')
  @bg_image 	= url
  @bg_image_x = x
  @bg_image_y = y
end

#set_data(data) ⇒ Object 



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# File 'lib/open_flash_chart.rb', line 51

def set_data(data)
  if @data.size == 0
    @data << '&values=' + data.join(',') + "& \n"
  else
    @data << '&values_' + (@data.size + 1).to_s + "=" + data.join(',') + "& \n"
  end
end

#set_inner_background(col, col2 = '', angle = -1)) ⇒ Object 



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# File 'lib/open_flash_chart.rb', line 85

def set_inner_background(col, col2='', angle=-1)
  @inner_bg_color  = col
  @inner_bg_color2 = col2  if col2.size > 0
  @inner_bg_angle  = angle if angle != -1
end

#set_x_label_style(size, color = '', orientation = 0, step = -1,, grid_color = '') ⇒ Object 



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# File 'lib/open_flash_chart.rb', line 66

def set_x_label_style(size, color='', orientation=0, step=-1, grid_color='')
  @x_label_style  = "&x_label_style=#{size}"
  @x_label_style << ",#{color}" 			if color.size > 0
  @x_label_style += ",#{orientation}" if orientation > -1
  @x_label_style += ",#{step}" 				if step > 0
  @x_label_style += ",#{grid_color}"  if grid_color.size > 0

end

#title(title, style = '') ⇒ Object 



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# File 'lib/open_flash_chart.rb', line 108

def title(title, style='')
  @title       = title
  @title_style = style  if style.size > 0
end