Example #1
0
int main(int argc, char *argv[])
{
    // The values to display on the meter
    double value0 = 30.99;
    double value1 = 45.35;
    double value2 = 77.64;

    // Create an LinearMeter object of size 60 x 245 pixels, using silver background
    // with a 2 pixel black 3D depressed border.
    LinearMeter *m = new LinearMeter(60, 245, Chart::silverColor(), 0, -2);

    // Set the scale region top-left corner at (25, 30), with size of 20 x 200
    // pixels. The scale labels are located on the left (default - implies vertical
    // meter)
    m->setMeter(25, 30, 20, 200);

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

    // Set 0 - 50 as green (99ff99) zone, 50 - 80 as yellow (ffff66) zone, and 80 -
    // 100 as red (ffcccc) zone
    m->addZone(0, 50, 0x99ff99);
    m->addZone(50, 80, 0xffff66);
    m->addZone(80, 100, 0xffcccc);

    // Add deep red (000080), deep green (008000) and deep blue (800000) pointers to
    // reflect the values
    m->addPointer(value0, 0x000080);
    m->addPointer(value1, 0x008000);
    m->addPointer(value2, 0x800000);

    // Add a text box label at top-center (30, 5) using Arial Bold/8 pts/deep blue
    // (000088), with a light blue (9999ff) background
    m->addText(30, 5, "Temp C", "arialbd.ttf", 8, 0x000088, Chart::TopCenter
        )->setBackground(0x9999ff);

    // output the chart
    m->makeChart("multivmeter.png");

    //free up resources
    delete m;
    return 0;
}
int main(int argc, char *argv[])
{
    // The value to display on the meter
    double value = 75.35;

    // Create an LinearMeter object of size 60 x 265 pixels, using silver background
    // with a 2 pixel black 3D depressed border.
    LinearMeter *m = new LinearMeter(60, 265, Chart::silverColor(), 0, -2);

    // Set the scale region top-left corner at (25, 30), with size of 20 x 200
    // pixels. The scale labels are located on the left (default - implies vertical
    // meter)
    m->setMeter(25, 30, 20, 200);

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

    // Set 0 - 50 as green (99ff99) zone, 50 - 80 as yellow (ffff66) zone, and 80 -
    // 100 as red (ffcccc) zone
    m->addZone(0, 50, 0x99ff99);
    m->addZone(50, 80, 0xffff66);
    m->addZone(80, 100, 0xffcccc);

    // Add a deep blue (000080) pointer at the specified value
    m->addPointer(value, 0x000080);

    // Add a text box label at top-center (30, 5) using Arial Bold/8 pts/deep blue
    // (000088), with a light blue (9999ff) background
    m->addText(30, 5, "Temp C", "arialbd.ttf", 8, 0x000088, Chart::TopCenter
        )->setBackground(0x9999ff);

    // Add a text box to show the value formatted to 2 decimal places at bottom
    // center (30, 260). Use white text on black background with a 1 pixel depressed
    // 3D border.
    m->addText(30, 260, m->formatValue(value, "2"), "arial.ttf", 8, 0xffffff,
        Chart::BottomCenter)->setBackground(0, 0, -1);

    // Output the chart
    m->makeChart("vlinearmeter.png");

    //free up resources
    delete m;
    return 0;
}
Example #3
0
int main(int argc, char *argv[])
{
    // The value to display on the meter
    double value = 85;

    // Create an LinearMeter object of size 210 x 45 pixels, using silver background
    // with a 2 pixel black 3D depressed border.
    LinearMeter *m = new LinearMeter(210, 45, Chart::silverColor(), 0, -2);

    // Set the scale region top-left corner at (5, 5), with size of 200 x 20 pixels.
    // The scale labels are located on the bottom (implies horizontal meter)
    m->setMeter(5, 5, 200, 20, Chart::Bottom);

    // Set meter scale from 0 - 100
    m->setScale(0, 100);

    // Add a title at the bottom of the meter with a 1 pixel raised 3D border
    m->addTitle(Chart::Bottom, "Battery Level", "arialbd.ttf", 8)->setBackground(
        Chart::Transparent, -1, 1);

    // Set 3 zones of different colors to represent Good/Weak/Bad data ranges
    m->addZone(50, 100, 0x99ff99, "Good");
    m->addZone(20, 50, 0xffff66, "Weak");
    m->addZone(0, 20, 0xffcccc, "Bad");

    // Add empty labels (just need the ticks) at 0/20/50/80 as separators for zones
    m->addLabel(0, " ");
    m->addLabel(20, " ");
    m->addLabel(50, " ");
    m->addLabel(100, " ");

    // Add a semi-transparent blue (800000ff) pointer at the specified value, using
    // triangular pointer shape
    m->addPointer(value, 0x800000FF)->setShape(Chart::TriangularPointer);

    // output the chart
    m->makeChart("linearzonemeter.png");

    //free up resources
    delete m;
    return 0;
}
Example #4
0
//Linear Meters 温度计
QWidget * Widget::addLinearMeters()
{
    // The value to display on the meter
    double value = 74.25;

    // Create an LinearMeter object of size 250 x 65 pixels with a very light grey (0xeeeeee)
    // background, and a rounded 3-pixel thick light grey (0xcccccc) border
    LinearMeter *m = new LinearMeter(250, 65, 0xeeeeee, 0xcccccc);
    m->setRoundedFrame(Chart::Transparent);
    //m->setThickFrame(3);

    // Set the scale region top-left corner at (14, 23), with size of 218 x 20 pixels. The scale
    // labels are located on the top (implies horizontal meter)
    m->setMeter(14, 23, 218, 20, Chart::Top);
    //  m->setMeter(28, 18, 20, 205);//竖直方向的温度计


    // 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("hlinearmeter.png");

    //free up resources
    // delete m;

    QWidget * _widget= new QWidget();
    QChartViewer * _v= new QChartViewer(_widget);
    _v->setChart(m);
    return _widget;
}
void createChart(int chartIndex, const char *filename)
{
    // The value to display on the meter
    double value = 75.35;

    // Create a LinearMeter object of size 250 x 75 pixels with black background and rounded corners
    LinearMeter *m = new LinearMeter(250, 75, 0x000000);
    m->setRoundedFrame(Chart::Transparent);

    // Set the default text and line colors to white (0xffffff)
    m->setColor(Chart::TextColor, 0xffffff);
    m->setColor(Chart::LineColor, 0xffffff);

    // Set the scale region top-left corner at (14, 23), with size of 218 x 20 pixels. The scale
    // labels are located on the top (implies horizontal meter)
    m->setMeter(14, 23, 218, 20, Chart::Top);

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

    // The tick line width to 1 pixel
    m->setLineWidth(0, 1);

    // Demostrate different types of color scales and putting them at different positions
    double smoothColorScale[] = {0, 0x0000ff, 25, 0x0088ff, 50, 0x00ff00, 75, 0xdddd00, 100,
        0xff0000};
    double stepColorScale[] = {0, 0x00cc00, 50, 0xeecc00, 80, 0xdd0000, 100};
    double highLowColorScale[] = {0, 0x0000ff, 70, Chart::Transparent, 100, 0xff0000};

    if (chartIndex == 0) {
        // Add the smooth color scale at the default position
        m->addColorScale(DoubleArray(smoothColorScale, (int)(sizeof(smoothColorScale) / sizeof(
            smoothColorScale[0]))));
    } else if (chartIndex == 1) {
        // Add the smooth color scale starting at y = 23 (top of scale) with zero width and ending
        // at y = 23 with 20 pixels width
        m->addColorScale(DoubleArray(smoothColorScale, (int)(sizeof(smoothColorScale) / sizeof(
            smoothColorScale[0]))), 23, 0, 23, 20);
    } else if (chartIndex == 2) {
        // Add the high low scale at the default position
        m->addColorScale(DoubleArray(highLowColorScale, (int)(sizeof(highLowColorScale) / sizeof(
            highLowColorScale[0]))));
    } else if (chartIndex == 3) {
        // Add the smooth color scale starting at y = 33 (center of scale) with zero width and
        // ending at y = 23 with 20 pixels width
        m->addColorScale(DoubleArray(smoothColorScale, (int)(sizeof(smoothColorScale) / sizeof(
            smoothColorScale[0]))), 33, 0, 23, 20);
    } else if (chartIndex == 4) {
        // Add the step color scale at the default position
        m->addColorScale(DoubleArray(stepColorScale, (int)(sizeof(stepColorScale) / sizeof(
            stepColorScale[0]))));
    } else {
        // Add the smooth color scale starting at y = 43 (bottom of scale) with zero width and
        // ending at y = 23 with 20 pixels width
        m->addColorScale(DoubleArray(smoothColorScale, (int)(sizeof(smoothColorScale) / sizeof(
            smoothColorScale[0]))), 43, 0, 23, 20);
    }

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

    // Add a label left aligned to (10, 61) using 8pt Arial Bold font
    m->addText(10, 61, "Temperature C", "arialbd.ttf", 8, Chart::TextColor, Chart::Left);

    // Add a text box right aligned to (235, 61). Display the value using white (0xffffff) 8pt Arial
    // Bold font on a black (0x000000) background with depressed grey (0x444444) rounded border.
    TextBox *t = m->addText(235, 61, m->formatValue(value, "2"), "arialbd.ttf", 8, 0xffffff,
        Chart::Right);
    t->setBackground(0x000000, 0x444444, -1);
    t->setRoundedCorners(3);

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

    //free up resources
    delete m;
}