require("chartdirector")
class EnhancedareaController < ApplicationController
def index()
@title = "Enhanced Area Chart"
@ctrl_file = File.expand_path(__FILE__)
@noOfCharts = 1
render :template => "templates/chartview"
end
#
# Render and deliver the chart
#
def getchart()
# The data for the area chart
data = [30, 28, 40, 55, 75, 68, 54, 60, 50, 62, 75, 65, 75, 89, 60, 55, 53, 35, 50, 66, 56,
48, 52, 65, 62]
# The labels for the area chart
labels = ["0", "1", "2", "3", "4", "5", "6", "7", "8", "9", "10", "11", "12", "13", "14",
"15", "16", "17", "18", "19", "20", "21", "22", "23", "24"]
# Create a XYChart object of size 600 x 360 pixels, with a brushed silver background, 1
# pixel 3D border effect, rounded corners and soft drop shadow.
c = ChartDirector::XYChart.new(600, 360, ChartDirector::brushedSilverColor(),
ChartDirector::Transparent, 1)
c.setRoundedFrame()
c.setDropShadow()
# Set directory for loading images to current script directory
c.setSearchPath(File.dirname(__FILE__))
# Add a title box to the chart using 18pt Times Bold Italic font.
title = c.addTitle(
"<*block,valign=absmiddle*><*img=star.png*><*img=star.png*> Performance Enhancer " \
"<*img=star.png*><*img=star.png*><*/*>", "timesbi.ttf", 18)
#
# Use a text box with a depressed 3D border to create the inner depressed region
#
# The width of the frame border
frameWidth = 5
# Set the depressed region position
contentBox = c.addText(frameWidth, title.getHeight(), "")
contentBox.setSize(c.getDrawArea().getWidth() - 1 - frameWidth * 2, c.getDrawArea(
).getHeight() - title.getHeight() - frameWidth - 1)
# Use -1 as the rasied effect to create a depressed region
contentBox.setBackground(ChartDirector::Transparent, ChartDirector::Transparent, -1)
# Set rounded corners, and put the text box at the back of the chart
contentBox.setRoundedCorners(10)
contentBox.setZOrder(ChartDirector::ChartBackZ)
# Tentatively set the plotarea to 50 pixels from the left depressed edge, and 25 pixels
# under the top depressed edge. Set the width to 75 pixels less than the depressed region
# width, and the height to 75 pixels less than the depressed region height. Use white
# (ffffff) background, transparent border, and grey (cccccc) horizontal and vertical grid
# lines.
plotArea = c.setPlotArea(50 + contentBox.getLeftX(), contentBox.getTopY() + 25,
contentBox.getWidth() - 75, contentBox.getHeight() - 75, 0xffffff, -1, -1, 0xcccccc, -1)
# Add a title to the y axis
c.yAxis().setTitle("Energy Concentration (KJ per liter)")
# Set the labels on the x axis.
c.xAxis().setLabels(labels)
# Display 1 out of 3 labels on the x-axis.
c.xAxis().setLabelStep(3)
# Add a title to the x axis using CDML
c.xAxis().setTitle("<*block,valign=absmiddle*><*img=clock.png*> Elapsed Time (hour)<*/*>")
# Set the axes width to 2 pixels
c.xAxis().setWidth(2)
c.yAxis().setWidth(2)
# Add an area layer to the chart using a gradient color that changes vertically from
# semi-transparent red (60ff0000) to semi-transparent white (60ffffff)
c.addAreaLayer(data, c.linearGradientColor(0, contentBox.getTopY() + 20, 0,
contentBox.getTopY() + contentBox.getHeight() - 50, 0x60ff0000, 0x60ffffff))
# Adjust the plot area size, such that the bounding box (inclusive of axes) is 15 pixels
# from the left depressed edge, 25 pixels below the top depressed edge, 25 pixels from the
# right depressed edge, and 15 pixels above the bottom depressed edge.
c.packPlotArea(contentBox.getLeftX() + 15, contentBox.getTopY() + 25, contentBox.getLeftX(
) + contentBox.getWidth() - 25, contentBox.getTopY() + contentBox.getHeight() - 15)
# Add a custom CDML text with the bottom right corner is anchored to the bootom right corner
# of the plot area, with 5 pixels margin.
c.addText(plotArea.getLeftX() + plotArea.getWidth() - 5, plotArea.getTopY(
) + plotArea.getHeight() - 5,
"<*block,valign=absmiddle*><*img=small_molecule.png*> <*block*>" \
"<*font=timesbi.ttf,size=10,color=804040*>Molecular\nEngineering<*/*>").setAlignment(
ChartDirector::BottomRight)
# Output the chart
send_data(c.makeChart2(ChartDirector::JPG), :type => "image/jpeg", :disposition => "inline")
end
end |
