<?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;

# The background and border colors of the meters
$bgColor = array(0xbbddff, 0xccffcc, 0xffccff, 0xffffaa, 0xffdddd, 0xeeeeee);
$borderColor = array(0x000088, 0x006600, 0x6600aa, 0xee6600, 0x880000, 0x666666);

# Create a LinearMeter object of size 250 x 75 pixels with a 3-pixel thick rounded frame
$m = new LinearMeter(250, 75, $bgColor[$chartIndex], $borderColor[$chartIndex]);
$m->setRoundedFrame(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, Top);

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

# Demostrate different types of color scales and putting them at different positions
$smoothColorScale = array(0, 0x6666ff, 25, 0x00bbbb, 50, 0x00ff00, 75, 0xffff00, 100, 0xff0000);
$stepColorScale = array(0, 0x33ff33, 50, 0xffff33, 80, 0xff3333, 100);
$highLowColorScale = array(0, 0x6666ff, 70, Transparent, 100, 0xff0000);

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

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

# Add a label left aligned to (10, 61) using 8pt Arial Bold font
$m->addText(10, 61, "Temperature C", "arialbd.ttf", 8, TextColor, 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 rounded border.
$t = $m->addText(235, 61, $m->formatValue($value, "2"), "arialbd.ttf", 8, 0xffffff, Right);
$t->setBackground(0x000000, 0x000000, -1);
$t->setRoundedCorners(3);

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