ChartDirector 7.1 (C++ Edition)
Color Vertical Bar Meters
Source Code Listing
#include "chartdir.h"
void createChart(int chartIndex, const char *filename)
{
// The value to display on the meter
double value = 66.77;
// The background, border and bar colors of the meters
int bgColor[] = {0xcce4ff, 0xccffcc, 0xffdddd, 0xffffaa, 0xffccff, 0xeeeeee};
const int bgColor_size = (int)(sizeof(bgColor)/sizeof(*bgColor));
int borderColor[] = {0x000088, 0x006600, 0x880000, 0xee6600, 0x6600aa, 0x666666};
const int borderColor_size = (int)(sizeof(borderColor)/sizeof(*borderColor));
int barColor[] = {0x2299ff, 0x00ee00, 0xee4455, 0xff8800, 0x8833dd, 0x888888};
const int barColor_size = (int)(sizeof(barColor)/sizeof(*barColor));
// Create a LinearMeter object of size 70 x 260 pixels with a 3-pixel thick rounded frame
LinearMeter* m = new LinearMeter(70, 260, bgColor[chartIndex], borderColor[chartIndex]);
m->setRoundedFrame(Chart::Transparent);
m->setThickFrame(3);
// Set the scale region top-left corner at (28, 33), with size of 20 x 194 pixels. The scale
// labels are located on the left (default - implies vertical meter).
m->setMeter(28, 33, 20, 194);
// Set meter scale from 0 - 100, with a tick every 10 units
m->setScale(0, 100, 10);
// Demostrate different types of color scales
double smoothColorScale[] = {0, 0x0000ff, 25, 0x0088ff, 50, 0x00ff00, 75, 0xdddd00, 100,
0xff0000};
const int smoothColorScale_size = (int)(sizeof(smoothColorScale)/sizeof(*smoothColorScale));
double stepColorScale[] = {0, 0x33ff33, 50, 0xffff00, 80, 0xff3333, 100};
const int stepColorScale_size = (int)(sizeof(stepColorScale)/sizeof(*stepColorScale));
double highLowColorScale[] = {0, 0x0000ff, 40, Chart::Transparent, 60, Chart::Transparent, 100,
0xff0000};
const int highLowColorScale_size = (int)(sizeof(highLowColorScale)/sizeof(*highLowColorScale));
double highColorScale[] = {70, Chart::Transparent, 100, 0xff0000};
const int highColorScale_size = (int)(sizeof(highColorScale)/sizeof(*highColorScale));
double lowColorScale[] = {0, 0x0000ff, 30, Chart::Transparent};
const int lowColorScale_size = (int)(sizeof(lowColorScale)/sizeof(*lowColorScale));
if (chartIndex == 0) {
// Add a 6-pixel thick smooth color scale at x = 53 (right of meter scale)
m->addColorScale(DoubleArray(smoothColorScale, smoothColorScale_size), 53, 6);
} else if (chartIndex == 1) {
// Add a high only color scale at x = 52 (right of meter scale) with thickness varying from
// 0 to 8
m->addColorScale(DoubleArray(highColorScale, highColorScale_size), 52, 0, 52, 8);
// Add a low only color scale at x = 52 (right of meter scale) with thickness varying from 8
// to 0
m->addColorScale(DoubleArray(lowColorScale, lowColorScale_size), 52, 8, 52, 0);
} else if (chartIndex == 2) {
// Add a high only color scale at x = 52 (right of meter scale) with thickness varying from
// 0 to 8
m->addColorScale(DoubleArray(highColorScale, highColorScale_size), 52, 0, 52, 8);
} else if (chartIndex == 3) {
// Add a smooth color scale at x = 52 (right of meter scale) with thickness varying from 0
// to 8
m->addColorScale(DoubleArray(smoothColorScale, smoothColorScale_size), 52, 0, 52, 8);
} else if (chartIndex == 4) {
// Add a 6-pixel thick high/low color scale at x = 53 (right of meter scale)
m->addColorScale(DoubleArray(highLowColorScale, highLowColorScale_size), 53, 6);
} else {
// Add a 6-pixel thick step color scale at x = 53 (right of meter scale)
m->addColorScale(DoubleArray(stepColorScale, stepColorScale_size), 53, 6);
}
// Add a bar from 0 to value with glass effect and 4 pixel rounded corners
m->addBar(0, value, barColor[chartIndex], Chart::glassEffect(Chart::NormalGlare, Chart::Left), 4
);
// Add a title using white (0xffffff) 8pt Arial Bold font with a border color background
m->addTitle("Temp C", "Arial Bold", 8, 0xffffff)->setBackground(borderColor[chartIndex]);
// Add a bottom title using white (0xffffff) 8pt Arial Bold font with a border color background
// to display the value
m->addTitle(Chart::Bottom, m->formatValue(value, "2"), "Arial Bold", 8, 0xffffff
)->setBackground(borderColor[chartIndex]);
// Output the chart
m->makeChart(filename);
//free up resources
delete m;
}
int main(int argc, char *argv[])
{
createChart(0, "colorvbarmeter0.png");
createChart(1, "colorvbarmeter1.png");
createChart(2, "colorvbarmeter2.png");
createChart(3, "colorvbarmeter3.png");
createChart(4, "colorvbarmeter4.png");
createChart(5, "colorvbarmeter5.png");
return 0;
}