#include "chartdir.h"
int main(int argc, char *argv[])
{
//The data for the chart
double data[] = {40, 45, 37, 24, 32, 39, 53, 52, 63, 49, 46, 40, 54, 50, 57,
57, 48, 49, 63, 67, 74, 72, 70, 89, 74};
const char *labels[] = {"0\nJun 4", "-", "-", "3", "-", "-", "6", "-", "-",
"9", "-", "-", "12", "-", "-", "15", "-", "-", "18", "-", "-", "21",
"-", "-", "0\nJun 5"};
//Create a XYChart object of size 400 x 270 pixels
XYChart *c = new XYChart(400, 270);
//Set the plotarea at (80, 60) and of size 300 x 200 pixels. Turn off the
//grid lines by setting their colors to Transparent.
c->setPlotArea(80, 28, 300, 200)->setGridColor(Transparent);
//Add a title to the y axis
TextBox *textbox = c->yAxis()->setTitle("Temperature");
//Set the y axis title upright (font angle = 0)
textbox->setFontAngle(0);
//Put the y axis title on top of the axis
textbox->setAlignment(Top);
//Move the y axis title by (-36, 8) (36 pixels left, 8 pixels up)
textbox->setPos(-36, 8);
//Add green (0x99ff99), yellow (0xffff99) and red (0xff9999) zones to the y
//axis to represent the ranges 0 - 50, 50 - 80, and 80 - max.
c->yAxis()->addZone(0, 50, 0x99ff99);
c->yAxis()->addZone(50, 80, 0xffff99);
c->yAxis()->addZone(80, 9999, 0xff9999);
//Add a purple (0x800080) mark at y = 70 using a line width of 2.
c->yAxis()->addMark(70, 0x800080, "Alert = 70")->setLineWidth(2);
//Add a green (0x008000) mark at y = 40 using a line width of 2.
c->yAxis()->addMark(40, 0x8000, "Watch = 40")->setLineWidth(2);
//Add a legend box at (165, 0) (top right of the chart) using 8 pts Arial
//font. and horizontal layout.
LegendBox *legend = c->addLegend(165, 0, false, "arialbd.ttf", 8);
//Disable the legend box boundary by setting the colors to Transparent
legend->setBackground(Transparent, Transparent);
//Add 3 custom entries to the legend box to represent the 3 zones
legend->addKey("Normal", 0x80ff80);
legend->addKey("Warning", 0xffff80);
legend->addKey("Critical", 0xff8080);
//Set the labels on the x axis
c->xAxis()->setLabels(StringArray(labels, sizeof(labels)/sizeof(*labels)));
//Add a 3D bar layer with the given data
BarLayer *layer = c->addBarLayer(DoubleArray(data,
sizeof(data)/sizeof(*data)), 0xbbbbff);
//Set the bar gap to 0 so that the bars are packed tightly
layer->setBarGap(0);
//Set the border color of the bars same as the fill color, with 1 pixel 3D
//border effect.
layer->setBorderColor(SameAsMainColor, 1);
//output the chart
c->makeChart("markzone.png");
//free up resources
delete c;
return 0;
}
|