<?php
class userQuota
{
// quota variables
var $qType; // output type
var $qQuota; // quota value
var $qUsed; // used value
var $qUser; // input user name
// image variables
var $gWidth; // width of pie chart
var $gHeight; // height of pie chart (determined by width)
var $g3DHeight; // do we want a 3D look or not
var $gLegend; // display the legend or not
var $gQuotaColour; // colour of quota
var $gUsedColour; // colour of used space
var $gBackColour; // colour of the background
var $gTextColour; // colour of the legend text
var $gCentreUsed; // centre the 'used' wedge to bottom of pie
//
// class functions - user called
//
//
// $quota is the total quota the user has supplied as just a number
// $used is how much the user has taken up supplied as just a number
// $username, if supplied, will be displayed on the image legend or in the text output
//
function userQuota($quota, $used, $username = '')
{
$this->qUser = $username;
$this->setOutputImage();
$this->setImageProperties();
$this->qQuota = $quota;
$this->qUsed = $used;
$this->oPercent = ($this->qUsed / (!$this->qQuota ? 1 : $this->qQuota)) * 100;
$this->qUser = $username;
}
//
// set the class to output only in text mode
//
function setOutputText()
{
$this->qType = 0;
}
//
// set the class to output in graphical mode
//
function setOutputImage()
{
$this->qType = 1;
}
//
// determine the image properties for the class
//
// $width is the width of the graph in pixels, supplied as an int
// $threeD is a boolean value. TRUE shows graph in faux 3D and FALSE shows graph flat
// $legend is a boolean value. TRUE shows legend and FALSE does not
// $centre is a boolean value. TRUE shows used wedge centered in chart and FALSE defaults to the right
//
// all colours are supplied as HTML hex values
//
// $qc is the quota colour
// $uc is the used colour
// $bc is the background colour
// $tc is the legend text colour
//
function setImageProperties($width = 150, $threeD = TRUE, $legend = TRUE, $centre = TRUE, $qc = 'DDDDDD', $uc = 'ED1C24', $bc = 'FFFFFF', $tc = '000000')
{
$this->gWidth = (!$width ? 150 : $width);
if ($threeD)
{
$this->gHeight = $width/2;
$this->g3DHeight = $width/10;
}
else
{
$this->gHeight = $width;
$this->g3DHeight = 0;
}
$this->gLegend = ($legend == TRUE ? TRUE : FALSE);
$this->gCentreUsed = ($centre == TRUE ? TRUE : FALSE);
$this->gQuotaColour = $this->_htmlHexToBinArray($qc);
$this->gUsedColour = $this->_htmlHexToBinArray($uc);
$this->gBackColour = $this->_htmlHexToBinArray($bc);
$this->gTextColour = $this->_htmlHexToBinArray($tc);
}
//
// show the quota output
//
function displayQuota()
{
($this->qType == 0) ? $this->_displayText() : $this->_displayImage();
}
//
// internal functions
//
//
// convert HTML hex value into integer array
//
function _htmlHexToBinArray($hex)
{
for ($i=0; $i<3; $i++)
{
$foo = substr($hex, 2*$i, 2);
$rgb[$i] = 16 * hexdec(substr($foo, 0, 1)) + hexdec(substr($foo, 1, 1));
}
return $rgb;
}
//
// output the quota text
//
function _displayText()
{
if ($this->qUser) echo 'The quota for ', $this->qUser;
else echo 'Your quota';
echo ' is ', $this->_formatSize($this->qQuota), ' and ',
($this->qUser ? 'they' : 'you'), ' have used ',
$this->_formatSize($this->qUsed), ' (',
number_format($this->oPercent, 2), '%) of it.';
}
//
// output the quota graph
//
function _displayImage()
{
// the graph variables
$sStart = $this->g3DHeight * 2;
$wStart = $this->gWidth * 2;
$hStart = $this->gHeight * 2;
if ($this->qUsed >= $this->qQuota) $usedPercent = 360;
else $usedPercent = $this->oPercent * 3.6;
// work out where the 'used' wedge will be located
if ($this->gCentreUsed)
{
$sWedge = (int)(90 - ($usedPercent / 2));
if ($sWedge < 0) $sWedge += 360;
$mWedge = (int)(90 + ($usedPercent / 2));
$mWedge = ($mWedge == 90 ? 91 : $mWedge);
$eWedge = (int)$sWedge;
}
else
{
$sWedge = 0;
$mWedge = (int)($usedPercent ? $usedPercent : 1);
$eWedge = 360;
}
// setup image and main colours
$im = @ImageCreateTrueColor($wStart, $hStart + $sStart);
if ($im)
{
$cBg = ImageColorAllocate($im, $this->gBackColour[0], $this->gBackColour[1], $this->gBackColour[2]);
$cUsed = ImageColorAllocate($im, $this->gUsedColour[0], $this->gUsedColour[1], $this->gUsedColour[2]);
$cQuota = ImageColorAllocate($im, $this->gQuotaColour[0], $this->gQuotaColour[1], $this->gQuotaColour[2]);
ImageFill($im, 0, 0, $cBg);
// work out 3D look if needs be
if ($this->g3DHeight)
{
// process colours
$qDarkArray = $this->gQuotaColour;
for ($i=0; $i<3; $i++)
{
($qDarkArray[$i] > 99) ? $qDarkArray[$i] -= 100 : $qDarkArray[$i] = 0;
}
$uDarkArray = $this->gUsedColour;
for ($i=0; $i<3; $i++)
{
($uDarkArray[$i] > 99) ? $uDarkArray[$i] -= 100 : $uDarkArray[$i] = 0;
}
$cQuotaDark = ImageColorAllocate($im, $qDarkArray[0], $qDarkArray[1], $qDarkArray[2]);
$cUsedDark = ImageColorAllocate($im, $uDarkArray[0], $uDarkArray[1], $uDarkArray[2]);
// add 3D look
$shadow_start = ($hStart/2) + $sStart;
$shadow_end = $hStart/2;
for ($i=$shadow_start; $i>$shadow_end; $i--)
{
ImageFilledArc($im, ($wStart/2), $i, $wStart, $hStart, $sWedge, $mWedge, $cUsedDark, IMG_ARC_PIE);
ImageFilledArc($im, ($wStart/2), $i, $wStart, $hStart, $mWedge, $eWedge, $cQuotaDark, IMG_ARC_PIE);
}
}
// now do the top of the graph
ImageFilledArc($im, ($wStart/2), ($hStart/2), $wStart, $hStart, $sWedge, $mWedge, $cUsed, IMG_ARC_PIE);
ImageFilledArc($im, ($wStart/2), ($hStart/2), $wStart, $hStart, $mWedge, $eWedge, $cQuota, IMG_ARC_PIE);
// now create a legend image if needs be
if ($this->gLegend)
{
// the legend variables
$lHeight = $lWidth = 0;
$spacer = 10;
// build quota strings
$qText[0] = 'Quota: ' . $this->_formatSize($this->qQuota);
if ($this->qUser) $qText[1] = ' (' . $this->qUser . ')';
else $qText[1] = '';
$uText[0] = 'Used : ' . $this->_formatSize($this->qUsed);
$uText[1] = ' (' . number_format($this->oPercent,2) . '%)';
// space + line + spacer + line
$lHeight = (ImageFontHeight(2) * ($qText[1] == '' ? 3 : 4)) + $spacer;
// get biggest string length and add spacer to it - legend block is size of font height (square)
$qMax = (strlen($qText[0]) > strlen($qText[1])) ? strlen($qText[0]) : strlen($qText[1]);
$uMax = (strlen($uText[0]) > strlen($uText[1])) ? strlen($uText[0]) : strlen($uText[1]);
$tMax = ($qMax > $uMax ? $qMax : $uMax);
$lWidth = ($tMax * ImageFontWidth(2)) + $spacer + ImageFontHeight(2);
// now create the image
$lim = ImageCreateTrueColor($lWidth, $lHeight);
ImageFill($lim, 0, 0, $cBg);
$cText = ImageColorAllocate($lim, $this->gTextColour[0], $this->gTextColour[1], $this->gTextColour[2]);
$lx = 0;
$ly = 0;
// write out the 'quota' legend
ImageFilledRectangle($lim, $lx, $ly, ($lx + ImageFontHeight(2)), ($ly + ImageFontHeight(2)), $cQuota);
ImageString($lim, 2, ($lx + ImageFontHeight(2) + $spacer), $ly, $qText[0], $cText);
if ($qText[1] != '')
{
$ly += ImageFontHeight(2);
ImageString($lim, 2, ($lx + ImageFontHeight(2) + $spacer), $ly, $qText[1], $cText);
}
$ly += ($spacer + ImageFontHeight(2));
// write out the 'used' legend
ImageFilledRectangle($lim, $lx, $ly, ($lx + ImageFontHeight(2)), ($ly + ImageFontHeight(2)), $cUsed);
ImageString($lim, 2, ($lx + ImageFontHeight(2) + $spacer), $ly, $uText[0], $cText);
$ly += ImageFontHeight(2);
ImageString($lim, 2, ($lx + ImageFontHeight(2) + $spacer), $ly, $uText[1], $cText);
// now merge the two images into the final one
// anti-aliasing look
$gsx = ImageSX($im);
$gsy = ImageSY($im);
$lsx = ImageSX($lim);
$lsy = ImageSY($lim);
$gnx = ($gsx >> 1);
$gny = ($gsy >> 1);
$fx = ($gnx > $lsx) ? $gnx : $lsx;
$fy = $gny + $lsy + ($spacer * 2);
$final = ImageCreateTrueColor($fx, $fy);
ImageFill($final, 0, 0, $cBg);
ImageCopyResampled($final, $im, (($fx/2)-($gnx/2)), 0, 0, 0, $gnx, $gny, $gsx, $gsy);
ImageCopyResampled($final, $lim, (($fx/2)-($lsx/2)), $gny + ($spacer * 2), 0, 0, $lsx, $lsy, $lsx, $lsy);
ImageDestroy($lim);
}
else
{
// we do not have a legend, so just reample graph
$sx = ImageSX($im);
$sy = ImageSY($im);
$nx = ($sx>>1);
$ny = ($sy>>1);
$final = ImageCreateTrueColor($nx, $ny);
ImageCopyResampled($final, $im, 0, 0, 0, 0, $nx, $ny, $sx, $sy);
}
// flush image
header("Content-type: image/jpeg");
ImageJPEG($final, NULL, 100);
ImageDestroy($im);
ImageDestroy($final);
}
}
//
// make the size of the quota values more human readable
//
function _formatSize($size = 0)
{
if ($size >= 1073741824) $size = round($size/1073741824*100)/100 . " Gb";
else if ($size >= 1048576) $size = round($size/1048576*100)/100 . " Mb";
else if ($size >= 1024) $size = round($size/1024*100)/100 . " kb";
else $size = $size . " bytes";
return $size;
}
}
?>
Richiamata da
<?include("class.userquota.php");
$ax=new userQuota(100,10,"");
$ax->userQuota(100,10,"");
$ax->setOutputImage();
$ax->displayQuota();
?>
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