//角表
QWidget* Widget::addAngularMeter()
{
// Create an AngularMeter object of size 300 x 300 pixels with transparent background
AngularMeter *m = new AngularMeter(300, 300, Chart::Transparent);
// Set the default text and line colors to white (0xffffff)
m->setColor(Chart::TextColor, 0xffffff);
m->setColor(Chart::LineColor, 0xffffff);
// Center at (150, 150), scale radius = 128 pixels, scale angle 0 to 360 degrees
m->setMeter(150, 150, 128, 0, 360);
// Add a black (0x000000) circle with radius 148 pixels as background
m->addRing(0, 148, 0x000000);
// Add a ring between radii 139 and 147 pixels using the silver color with a light grey
// (0xcccccc) edge as border
m->addRing(139, 147, Chart::silverColor(), 0xcccccc);
// Meter scale is 0 - 100, with major/minor/micro ticks every 10/5/1 units
m->setScale(0, 100, 10, 5, 1);
// Set the scale label style to 16pt Arial Italic. Set the major/minor/micro tick lengths to
// 13/10/7 pixels pointing inwards, and their widths to 2/1/1 pixels.
m->setLabelStyle("ariali.ttf", 16);
m->setTickLength(-13, -10, -7);
m->setLineWidth(0, 2, 1, 1);
// Add a semi-transparent blue (0x7f6666ff) pointer using the default shape
m->addPointer(25, 0x7f6666ff, 0x6666ff);
// Add a semi-transparent red (0x7fff6666) pointer using the arrow shape
m->addPointer(9, 0x7fff6666, 0xff6666)->setShape(Chart::ArrowPointer2);
// Add a semi-transparent yellow (0x7fffff66) pointer using another arrow shape
m->addPointer(51, 0x7fffff66, 0xffff66)->setShape(Chart::ArrowPointer);
// Add a semi-transparent green (0x7f66ff66) pointer using the line shape
m->addPointer(72, 0x7f66ff66, 0x66ff66)->setShape(Chart::LinePointer);
// Add a semi-transparent grey (0x7fcccccc) pointer using the pencil shape
m->addPointer(85, 0x7fcccccc, 0xcccccc)->setShape(Chart::PencilPointer);
// Output the chart
m->makeChart("angularpointer.png");
//free up resources
//delete m;
QWidget *_widget= new QWidget();
QChartViewer * _v= new QChartViewer(_widget);
_v->setChart(m);
return _widget;
}
int main(int argc, char *argv[])
{
// The value to display on the meter
double value = 85;
// Create an AugularMeter object of size 70 x 90 pixels, using black background
// with a 2 pixel 3D depressed border.
AngularMeter *m = new AngularMeter(70, 90, 0, 0, -2);
// Use white on black color palette for default text and line colors
m->setColors(Chart::whiteOnBlackPalette);
// Set the meter center at (10, 45), with radius 50 pixels, and span from 135 to
// 45 degress
m->setMeter(10, 45, 50, 135, 45);
// Set meter scale from 0 - 100, with the specified labels
const char * pattern1[] = {"E", " ", " ", " ", "F"};
m->setScale(0, 100, StringArray(pattern1, sizeof(pattern1)/sizeof(pattern1[0])));
// Set the angular arc and major tick width to 2 pixels
m->setLineWidth(2, 2);
// Add a red zone at 0 - 15
m->addZone(0, 15, 0xff3333);
// Add an icon at (25, 35)
m->addText(25, 35, "<*img=gas.gif*>");
// Add a yellow (ffff00) pointer at the specified value
m->addPointer(value, 0xffff00);
// Output the chart
m->makeChart("iconameter.png");
//free up resources
delete m;
return 0;
}