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;
}
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;
}
//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;
}