ChartDirector 6.0 (C++ Edition)

V-Linear Meter Orientation


  

This example demonstration various orientations for vertical linear meters.

In a vertical linear meter, the scale labels can be positioned on the left or right side of the meter scale. This is controlled by the last argument to LinearMeter.setMeter, which can be Left or Right.

Source Code Listing

[The following code is available in "cppdemo/vlinearmeterorientation". 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"

void createChart(int chartIndex, const char *filename)
{
    // The value to display on the meter
    double value = 75.35;

    // Create a LinearMeter object of size 70 x 240 pixels with very light grey (0xeeeeee)
    // backgruond and a light grey (0xccccccc) 3-pixel thick rounded frame
    LinearMeter *m = new LinearMeter(70, 240, 0xeeeeee, 0xcccccc);
    m->setRoundedFrame(Chart::Transparent);
    m->setThickFrame(3);

    // This example demonstrates putting the text labels at the left or right side by setting the
    // label alignment and scale position.
    if (chartIndex == 0) {
        m->setMeter(28, 18, 20, 205, Chart::Left);
    } else {
        m->setMeter(20, 18, 20, 205, Chart::Right);
    }

    // Set meter scale from 0 - 100, with a tick every 10 units
    m->setScale(0, 100, 10);

    // Add a smooth color scale to the meter
    double smoothColorScale[] = {0, 0x6666ff, 25, 0x00bbbb, 50, 0x00ff00, 75, 0xffff00, 100,
        0xff0000};
    m->addColorScale(DoubleArray(smoothColorScale, (int)(sizeof(smoothColorScale) / sizeof(
        smoothColorScale[0]))));

    // Add a blue (0x0000cc) pointer at the specified value
    m->addPointer(value, 0x0000cc);

    // Output the chart
    m->makeChart(filename);

    //free up resources
    delete m;
}

int main(int argc, char *argv[])
{
    createChart(0, "vlinearmeterorientation0.png");
    createChart(1, "vlinearmeterorientation1.png");
    return 0;
}