File Source for Image.class.php

<?php
/*
* This work is hereby released into the Public Domain.
* To view a copy of the public domain dedication,
* visit http://creativecommons.org/licenses/publicdomain/ or send a letter to
* Creative Commons, 559 Nathan Abbott Way, Stanford, California 94305, USA.
*
*/
/* <php4> */
define("IMAGE_JPEG", 1);
define("IMAGE_PNG", 2);
define("IMAGE_GIF", 3);
/* </php4> */
/*
* Register a class with the prefix in configuration file
*/
function registerClass($class, $abstract = FALSE) {
if(ARTICHOW_PREFIX === 'aw') {
return;
}
$abstract = '';
eval($abstract." class ".ARTICHOW_PREFIX.$class." extends aw".$class." { }");
}
/*
* Register an interface with the prefix in configuration file
*/
function registerInterface($interface) {
if(ARTICHOW_PREFIX === 'aw') {
return;
}
}
// Some useful files
require_once ARTICHOW."/Component.class.php";
require_once ARTICHOW."/inc/Grid.class.php";
require_once ARTICHOW."/inc/Tools.class.php";
require_once ARTICHOW."/inc/Driver.class.php";
require_once ARTICHOW."/inc/Math.class.php";
require_once ARTICHOW."/inc/Tick.class.php";
require_once ARTICHOW."/inc/Axis.class.php";
require_once ARTICHOW."/inc/Legend.class.php";
require_once ARTICHOW."/inc/Mark.class.php";
require_once ARTICHOW."/inc/Label.class.php";
require_once ARTICHOW."/inc/Text.class.php";
require_once ARTICHOW."/inc/Color.class.php";
require_once ARTICHOW."/inc/Font.class.php";
require_once ARTICHOW."/inc/Gradient.class.php";
require_once ARTICHOW."/inc/Shadow.class.php";
require_once ARTICHOW."/inc/Border.class.php";
require_once ARTICHOW."/common.php";
/**
* An image for a graph
*
* @package linea21.externals
* @subpackage artichow
*/
class awImage {
/**
* Graph width
*
* @var int
*/
var $width;
/**
* Graph height
*
* @var int
*/
var $height;
/**
* Use anti-aliasing ?
*
* @var bool
*/
var $antiAliasing = FALSE;
/**
* Image format
*
* @var int
*/
var $format = IMAGE_PNG;
/**
* Image background color
*
* @var Color
*/
var $background;
/**
* GD resource
*
* @var resource
*/
var $resource;
/**
* A Driver object
*
* @var Driver
*/
var $driver;
/**
* Driver string
*
* @var string
*/
var $driverString;
/**
* Shadow
*
* @var Shadow
*/
var $shadow;
/**
* Image border
*
* @var Border
*/
var $border;
/**
* Use JPEG for image
*
* @var int
*/
/**
* Use PNG for image
*
* @var int
*/
/**
* Use GIF for image
*
* @var int
*/
/**
* Build the image
*/
function awImage() {
$this->background = new awColor(255, 255, 255);
$this->shadow = new awShadow(SHADOW_RIGHT_BOTTOM);
$this->border = new awBorder;
}
/**
* Get driver of the image
*
* @param int $w Driver width (from 0 to 1) (default to 1)
* @param int $h Driver height (from 0 to 1) (default to 1)
* @param float $x Position on X axis of the center of the driver (default to 0.5)
* @param float $y Position on Y axis of the center of the driver (default to 0.5)
* @return Driver
*/
function getDriver($w = 1, $h = 1, $x = 0.5, $y = 0.5) {
$this->create();
$this->driver->setSize($w, $h);
$this->driver->setPosition($x, $y);
return $this->driver;
}
/**
* Sets the driver that will be used to draw the graph
*
* @param string $driverString
*/
function setDriver($driverString) {
$this->driver = $this->selectDriver($driverString);
$this->driver->init($this);
}
/**
* Change the image size
*
* @var int $width Image width
* @var int $height Image height
*/
function setSize($width, $height) {
if($width !== NULL) {
$this->width = (int)$width;
}
if($height !== NULL) {
$this->height = (int)$height;
}
}
/**
* Change image background
*
* @param mixed $background
*/
function setBackground($background) {
if(is_a($background, 'awColor')) {
$this->setBackgroundColor($background);
} elseif(is_a($background, 'awGradient')) {
$this->setBackgroundGradient($background);
}
}
/**
* Change image background color
*
* @param $color
*/
function setBackgroundColor($color) {
$this->background = $color;
}
/**
* Change image background gradient
*
* @param $gradient
*/
function setBackgroundGradient($gradient) {
$this->background = $gradient;
}
/**
* Return image background, whether a Color or a Gradient
*
* @return mixed
*/
function getBackground() {
return $this->background;
}
/**
* Turn antialiasing on or off
*
* @var bool $bool
*/
function setAntiAliasing($bool) {
$this->antiAliasing = (bool)$bool;
}
/**
* Return the antialiasing setting
*
* @return bool
*/
function getAntiAliasing() {
return $this->antiAliasing;
}
/**
* Change image format
*
* @var int $format New image format
*/
function setFormat($format) {
if($format === IMAGE_JPEG or $format === IMAGE_PNG or $format === IMAGE_GIF) {
$this->format = $format;
}
}
/**
* Returns the image format as an integer
*
* @return unknown
*/
function getFormat() {
return $this->format;
}
/**
* Returns the image format as a string
*
* @return string
*/
function getFormatString() {
switch($this->format) {
case IMAGE_JPEG :
return 'jpeg';
case IMAGE_PNG :
return 'png';
case IMAGE_GIF :
return 'gif';
}
}
/**
* Create a new awimage
*/
function create() {
if($this->driver === NULL) {
$driver = $this->selectDriver($this->driverString);
$driver->init($this);
$this->driver = $driver;
}
}
/**
* Select the correct driver
*
* @param string $driver The desired driver
* @return mixed
*/
function selectDriver($driver) {
$drivers = array('gd');
$driver = strtolower((string)$driver);
if(in_array($driver, $drivers, TRUE)) {
$string = $driver;
} else {
$string = ARTICHOW_DRIVER;
}
switch ($string) {
case 'gd':
require_once ARTICHOW.'/inc/drivers/gd.class.php';
$this->driverString = $string;
return new awGDDriver();
default:
// We should never get here, unless the wrong string is used AND the ARTICHOW_DRIVER
// global has been messed with.
awImage::drawError('Class Image: Unknown driver type (\''.$string.'\')');
break;
}
}
/**
* Draw a component on the image
*
* @var &$component A component
*/
function drawComponent(&$component) {
$shadow = $this->shadow->getSpace(); // Image shadow
$border = $this->border->visible() ? 1 : 0; // Image border size
$driver = $this->driver;
$driver->setImageSize(
$this->width - $shadow->left - $shadow->right - $border * 2,
$this->height - $shadow->top - $shadow->bottom - $border * 2
);
// No absolute size specified
if($component->w === NULL and $component->h === NULL) {
list($width, $height) = $driver->setSize($component->width, $component->height);
// Set component size in pixels
$component->setAbsSize($width, $height);
} else {
$driver->setAbsSize($component->w, $component->h);
}
if($component->top !== NULL and $component->left !== NULL) {
$driver->setAbsPosition(
$border + $shadow->left + $component->left,
$border + $shadow->top + $component->top
);
} else {
$driver->setPosition($component->x, $component->y);
}
$driver->movePosition($border + $shadow->left, $border + $shadow->top);
list($x1, $y1, $x2, $y2) = $component->getPosition();
$component->init($driver);
$component->drawComponent($driver, $x1, $y1, $x2, $y2, $this->antiAliasing);
$component->drawEnvelope($driver, $x1, $y1, $x2, $y2);
$component->finalize($driver);
}
function drawShadow() {
$driver = $this->getDriver();
$this->shadow->draw(
$driver,
new awPoint(0, 0),
new awPoint($this->width, $this->height),
SHADOW_IN
);
}
/**
* Send the image into a file or to the user browser
*
*/
function send() {
$this->driver->send($this);
}
/**
* Return the image content as binary data
*
*/
function get() {
return $this->driver->get($this);
}
/**
* Send the correct HTTP header according to the image type
*
*/
function sendHeaders() {
if(headers_sent() === FALSE) {
switch ($this->driverString) {
case 'gd' :
header('Content-type: image/'.$this->getFormatString());
break;
}
}
}
/*
* Display an error image and exit
*
* @param string $message Error message
*/
function drawError($message) {
static $errorWriting;
if($errorWriting) {
return;
}
$errorWriting = TRUE;
$message = wordwrap($message, 40, "\n", TRUE);
$width = 400;
$height = max(100, 40 + 22.5 * (substr_count($message, "\n") + 1));
$image = new awImage();
$image->setSize($width, $height);
$image->setDriver('gd');
$driver = $image->getDriver();
$driver->init($image);
// Display title
$driver->filledRectangle(
new awWhite,
new awLine(
new awPoint(0, 0),
new awPoint($width, $height)
)
);
$driver->filledRectangle(
new awRed,
new awLine(
new awPoint(0, 0),
new awPoint(110, 25)
)
);
$text = new awText(
"Artichow error",
new awFont3,
new awWhite,
0
);
$driver->string($text, new awPoint(5, 6));
// Display red box
$driver->rectangle(
new awRed,
new awLine(
new awPoint(0, 25),
new awPoint($width - 90, $height - 1)
)
);
// Display error image
$file = ARTICHOW_IMAGE.DIRECTORY_SEPARATOR.'error.png';
$imageError = new awFileImage($file);
$driver->copyImage(
$imageError,
new awPoint($width - 81, $height - 81),
new awPoint($width - 1, $height - 1)
);
// Draw message
$text = new awText(
strip_tags($message),
new awFont2,
new awBlack,
0
);
$driver->string($text, new awPoint(10, 40));
$image->send();
exit;
}
/*
* Display an error image located in a file and exit
*
* @param string $error Error name
*/
function drawErrorFile($error) {
$file = ARTICHOW_IMAGE.DIRECTORY_SEPARATOR.'errors'.DIRECTORY_SEPARATOR.$error.'.png';
header("Content-Type: image/png");
readfile($file);
exit;
}
}
registerClass('Image');
/**
* Load an image from a file
*
* @package linea21.externals
* @subpackage artichow
*/
class awFileImage extends awImage {
/**
* Build a new awimage
*
* @param string $file Image file name
*/
function awFileImage($file) {
$driver = $this->selectDriver($this->driverString);
$driver->initFromFile($this, $file);
$this->driver = $driver;
}
}
registerClass('FileImage');
?>

Source for file Image.class.php