require("chartdirector")
class GanttController < ApplicationController
def index()
@title = "Simple Gantt Chart"
@ctrl_file = File.expand_path(__FILE__)
@noOfCharts = 1
render :template => "templates/chartview"
end
#
# Render and deliver the chart
#
def getchart()
# data for the gantt chart, representing the start date, end date and names for
# various activities
startDate = [Time.mktime(2004, 8, 16), Time.mktime(2004, 8, 30), Time.mktime(2004,
9, 13), Time.mktime(2004, 9, 20), Time.mktime(2004, 9, 27), Time.mktime(2004,
10, 4), Time.mktime(2004, 10, 25), Time.mktime(2004, 11, 1), Time.mktime(2004,
11, 8)]
endDate = [Time.mktime(2004, 8, 30), Time.mktime(2004, 9, 13), Time.mktime(2004,
9, 27), Time.mktime(2004, 10, 4), Time.mktime(2004, 10, 11), Time.mktime(2004,
11, 8), Time.mktime(2004, 11, 8), Time.mktime(2004, 11, 22), Time.mktime(2004,
11, 22)]
labels = ["Market Research", "Define Specifications", "Overall Archiecture",
"Project Planning", "Detail Design", "Software Development", "Test Plan",
"Testing and QA", "User Documentation"]
# Create a XYChart object of size 620 x 280 pixels. Set background color to light
# blue (ccccff), with 1 pixel 3D border effect.
c = ChartDirector::XYChart.new(620, 280, 0xccccff, 0x000000, 1)
# Add a title to the chart using 15 points Times Bold Itatic font, with white
# (ffffff) text on a deep blue (000080) background
c.addTitle("Simple Gantt Chart Demo", "timesbi.ttf", 15, 0xffffff).setBackground(
0x000080)
# Set the plotarea at (140, 55) and of size 460 x 200 pixels. Use alternative
# white/grey background. Enable both horizontal and vertical grids by setting
# their colors to grey (c0c0c0). Set vertical major grid (represents month
# boundaries) 2 pixels in width
c.setPlotArea(140, 55, 460, 200, 0xffffff, 0xeeeeee, ChartDirector::LineColor,
0xc0c0c0, 0xc0c0c0).setGridWidth(2, 1, 1, 1)
# swap the x and y axes to create a horziontal box-whisker chart
c.swapXY()
# Set the y-axis scale to be date scale from Aug 16, 2004 to Nov 22, 2004, with
# ticks every 7 days (1 week)
c.yAxis().setDateScale(Time.mktime(2004, 8, 16), Time.mktime(2004, 11, 22),
86400 * 7)
# Set multi-style axis label formatting. Month labels are in Arial Bold font in
# "mmm d" format. Weekly labels just show the day of month and use minor tick (by
# using '-' as first character of format string).
c.yAxis().setMultiFormat(ChartDirector::StartOfMonthFilter(),
"<*font=arialbd.ttf*>{value|mmm d}", ChartDirector::StartOfDayFilter(),
"-{value|d}")
# Set the y-axis to shown on the top (right + swapXY = top)
c.setYAxisOnRight()
# Set the labels on the x axis
c.xAxis().setLabels(labels)
# Reverse the x-axis scale so that it points downwards.
c.xAxis().setReverse()
# Set the horizontal ticks and grid lines to be between the bars
c.xAxis().setTickOffset(0.5)
# Add a green (33ff33) box-whisker layer showing the box only.
c.addBoxWhiskerLayer(startDate, endDate, nil, nil, nil, 0x00cc00,
ChartDirector::SameAsMainColor, ChartDirector::SameAsMainColor)
# output the chart
send_data(c.makeChart2(ChartDirector::PNG), :type => "image/png",
:disposition => "inline")
end
end |