function draw_odometer_chart($WIDTH, $HEIGHT, $DATA, $CONFIG, $LEGEND, $FONT, $PALETTE = 'default')
{
$palettename = return_palette_name($PALETTE);
require dirname(__FILE__) . '/lib/ezc/Graph/mahara/palettes/' . $palettename . '.php';
$graph = new ezcGraphOdometerChart();
$paletteclass = generate_palette_class_name($palettename);
$graph->palette = new $paletteclass();
$graph->title = $CONFIG['title'];
$graph->subtitle = 'Created: ' . $CONFIG['ctime'] . ', modified: ' . $CONFIG['mtime'];
$graph->subtitle->position = ezcGraph::BOTTOM;
$graph->legend = false;
$graph->background->padding = 10;
$graph->driver = new ezcGraphGdDriver();
$graph->driver->options->imageFormat = IMG_PNG;
switch ($FONT['type']) {
case 'serif':
$fontname = 'lib/ezc/Graph/mahara/fonts/LiberationSerif-Regular.ttf';
break;
case 'sans':
$fontname = 'lib/ezc/Graph/mahara/fonts/LiberationSans-Regular.ttf';
break;
}
$graph->options->font = $fontname;
// Set the maximum font size for all chart elements
$graph->options->font->maxFontSize = $FONT['size'];
// Set the font size for the title independently to 14
$graph->title->font->maxFontSize = $FONT['titlesize'];
// Set colors for the background gradient
//$graph->options->startColor = '#808080';
//$graph->options->endColor = '#C0C0C0';
/*
$graph->options->startColor = '#2E3436';
$graph->options->endColor = '#EEEEEC';
*/
// Set marker width
$graph->options->markerWidth = 3;
// Set axis span
$graph->axis->min = 0;
$graph->axis->max = 100;
$graph->axis->label = $DATA['label'];
/*
$graph->yAxis->majorStep = 20;
$graph->yAxis->minorStep = 10;
if ($CONFIG['type'] == 'percent') {
$graph->yAxis->formatString = '%d%%';
}
*/
if ($CONFIG['type'] == 'percent') {
$EZCDATA = array($DATA['percent']);
} else {
$EZCDATA = array($DATA['value']);
}
$graph->data[$CONFIG['title']] = new ezcGraphArrayDataSet($EZCDATA);
/* Build the PNG file and send it to the web browser */
$graph->renderToOutput($WIDTH, $HEIGHT);
}
public function testRenderCompleteOdometerToOutput()
{
$filename = $this->tempDir . __FUNCTION__ . '.svg';
$chart = new ezcGraphOdometerChart();
$chart->data['data'] = new ezcGraphArrayDataSet(array(1, 7, 18));
ob_start();
// Suppress header already sent warning
@$chart->renderToOutput(500, 200);
file_put_contents($filename, ob_get_clean());
$this->compare($filename, $this->basePath . 'compare/' . __CLASS__ . '_' . __FUNCTION__ . '.svg');
}