ChartDirector 6.0 (C++ Edition)

Cylinder Bar Shading




This example demonstrates using cylinder shading effect for bars. It also demonstrates brushed metal background, rounded frame, and axis labels on both sides of the plot area.

Source Code Listing

[The following code is available in "cppdemo/cylinderlightbar". A MFC version of the code is available in "mfcdemo/mfcdemo" (Windows edition only). A QT version of the code is available in "qtdemo/qtdemo".]
#include "chartdir.h"

int main(int argc, char *argv[])
{
    // The data for the bar chart
    double data[] = {450, 560, 630, 800, 1100, 1350, 1600, 1950, 2300, 2700};

    // The labels for the bar chart
    const char *labels[] = {"1996", "1997", "1998", "1999", "2000", "2001", "2002", "2003", "2004",
        "2005"};

    // Create a XYChart object of size 600 x 380 pixels. Set background color to brushed silver,
    // with a 2 pixel 3D border. Use rounded corners of 20 pixels radius.
    XYChart *c = new XYChart(600, 380, Chart::brushedSilverColor(), Chart::Transparent, 2);

    // Add a title to the chart using 18pt Times Bold Italic font. Set top/bottom margins to 8
    // pixels.
    c->addTitle("Annual Revenue for Star Tech", "timesbi.ttf", 18)->setMargin(0, 0, 8, 8);

    // Set the plotarea at (70, 55) and of size 460 x 280 pixels. Use transparent border and black
    // grid lines. Use rounded frame with radius of 20 pixels.
    c->setPlotArea(70, 55, 460, 280, -1, -1, Chart::Transparent, 0x000000);
    c->setRoundedFrame(0xffffff, 20);

    // Add a multi-color bar chart layer using the supplied data. Set cylinder bar shape.
    c->addBarLayer(DoubleArray(data, (int)(sizeof(data) / sizeof(data[0]))), IntArray(0, 0)
        )->setBarShape(Chart::CircleShape);

    // Set the labels on the x axis.
    c->xAxis()->setLabels(StringArray(labels, (int)(sizeof(labels) / sizeof(labels[0]))));

    // Show the same scale on the left and right y-axes
    c->syncYAxis();

    // Set the left y-axis and right y-axis title using 10pt Arial Bold font
    c->yAxis()->setTitle("USD (millions)", "arialbd.ttf", 10);
    c->yAxis2()->setTitle("USD (millions)", "arialbd.ttf", 10);

    // Set y-axes to transparent
    c->yAxis()->setColors(Chart::Transparent);
    c->yAxis2()->setColors(Chart::Transparent);

    // Disable ticks on the x-axis by setting the tick color to transparent
    c->xAxis()->setTickColor(Chart::Transparent);

    // Set the label styles of all axes to 8pt Arial Bold font
    c->xAxis()->setLabelStyle("arialbd.ttf", 8);
    c->yAxis()->setLabelStyle("arialbd.ttf", 8);
    c->yAxis2()->setLabelStyle("arialbd.ttf", 8);

    // Output the chart
    c->makeChart("cylinderlightbar.jpg");

    //free up resources
    delete c;
    return 0;
}