<?php
require_once("../lib/phpchartdir.php");

# This script can draw different charts depending on the chartIndex
$chartIndex = (int)($_REQUEST["img"]);

# The value to display on the meter
$value = 74.25;

# Create a LinearMeter object of size 250 x 75 pixels with very light grey (0xeeeeee) backgruond and
# a light grey (0xccccccc) 3-pixel thick rounded frame
$m = new LinearMeter(250, 75, 0xeeeeee, 0xcccccc);
$m->setRoundedFrame(Transparent);
$m->setThickFrame(3);

# This example demonstrates putting the text labels at the top or bottom. This is by setting the
# label alignment, scale position and label position.
$alignment = array(Top, Top, Bottom, Bottom);
$meterYPos = array(23, 23, 34, 34);
$labelYPos = array(61, 61, 15, 15);

# Set the scale region
$m->setMeter(14, $meterYPos[$chartIndex], 218, 20, $alignment[$chartIndex]);

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

# Add a smooth color scale at the default position
$smoothColorScale = array(0, 0x6666ff, 25, 0x00bbbb, 50, 0x00ff00, 75, 0xffff00, 100, 0xff0000);
$m->addColorScale($smoothColorScale);

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

#
# In this example, some charts have the "Temperauture" label on the left side and the value readout
# on the right side, and some charts have the reverse
#

if ($chartIndex % 2 == 0) {
    # Add a label on the left side using 8pt Arial Bold font
    $m->addText(10, $labelYPos[$chartIndex], "Temperature C", "arialbd.ttf", 8, TextColor, Left);

    # Add a text box on the right side. Display the value using white (0xffffff) 8pt Arial Bold font
    # on a black (0x000000) background with depressed rounded border.
    $t = $m->addText(235, $labelYPos[$chartIndex], $m->formatValue($value, "2"), "arialbd.ttf", 8,
        0xffffff, Right);
    $t->setBackground(0x000000, 0x000000, -1);
    $t->setRoundedCorners(3);
} else {
    # Add a label on the right side using 8pt Arial Bold font
    $m->addText(237, $labelYPos[$chartIndex], "Temperature C", "arialbd.ttf", 8, TextColor, Right);

    # Add a text box on the left side. Display the value using white (0xffffff) 8pt Arial Bold font
    # on a black (0x000000) background with depressed rounded border.
    $t = $m->addText(11, $labelYPos[$chartIndex], $m->formatValue($value, "2"), "arialbd.ttf", 8,
        0xffffff, Left);
    $t->setBackground(0x000000, 0x000000, -1);
    $t->setRoundedCorners(3);
}

# Output the chart
header("Content-type: image/png");
print($m->makeChart2(PNG));
?>