| Server IP : 49.231.201.246 / Your IP : 216.73.216.149 Web Server : Apache/2.4.18 (Ubuntu) System : Linux 246 4.4.0-210-generic #242-Ubuntu SMP Fri Apr 16 09:57:56 UTC 2021 x86_64 User : root ( 0) PHP Version : 7.0.33-0ubuntu0.16.04.16 Disable Function : exec,passthru,shell_exec,system,proc_open,popen,pcntl_exec MySQL : OFF | cURL : ON | WGET : ON | Perl : ON | Python : ON | Sudo : ON | Pkexec : ON Directory : /var/www/html/old/libraries/joomla/image/filter/ |
Upload File : |
<?php
/**
* @package Joomla.Platform
* @subpackage Image
*
* @copyright Copyright (C) 2005 - 2015 Open Source Matters, Inc. All rights reserved.
* @license GNU General Public License version 2 or later; see LICENSE
*/
defined('JPATH_PLATFORM') or die;
/**
* Image Filter class fill background with color;
*
* @package Joomla.Platform
* @subpackage Image
* @since 3.4
*/
class JImageFilterBackgroundfill extends JImageFilter
{
/**
* Method to apply a background color to an image resource.
*
* @param array $options An array of options for the filter.
* color Background matte color
*
* @return void
*
* @since 3.4
* @throws InvalidArgumentException
*/
public function execute(array $options = array())
{
// Validate that the color value exists and is an integer.
if (!isset($options['color']))
{
throw new InvalidArgumentException('No color value was given. Expected string or array.');
}
$colorCode = (!empty($options['color'])) ? $options['color'] : null;
// Get resource dimensions
$width = imagesX($this->handle);
$height = imagesY($this->handle);
// Sanitize color
$rgba = $this->sanitizeColor($colorCode);
// Enforce alpha on source image
if (imageIsTrueColor($this->handle))
{
imageAlphaBlending($this->handle, false);
imageSaveAlpha($this->handle, true);
}
// Create background
$bg = imageCreateTruecolor($width, $height);
imageSaveAlpha($bg, empty($rgba['alpha']));
// Allocate background color.
$color = imageColorAllocateAlpha($bg, $rgba['red'], $rgba['green'], $rgba['blue'], $rgba['alpha']);
// Fill background
imageFill($bg, 0, 0, $color);
// Apply image over background
imageCopy($bg, $this->handle, 0, 0, 0, 0, $width, $height);
// Move flattened result onto curent handle.
// If handle was palette-based, it'll stay like that.
imageCopy($this->handle, $bg, 0, 0, 0, 0, $width, $height);
// Free up memory
imageDestroy($bg);
return;
}
/**
* Method to sanitize color values
* and/or convert to an array
*
* @param mixed $input Associative array of colors and alpha,
* or hex RGBA string when alpha FF is opaque.
* Defaults to black and opaque alpha
*
* @return array Associative array of red, green, blue and alpha
*
* @since 3.4
*
* @note '#FF0000FF' returns an array with alpha of 0 (opaque)
*/
protected function sanitizeColor($input)
{
// Construct default values
$colors = array('red' => 0, 'green' => 0, 'blue' => 0, 'alpha' => 0);
// Make sure all values are in
if (is_array($input))
{
$colors = array_merge($colors, $input);
}
// Convert RGBA 6-9 char string
elseif (is_string($input))
{
$hex = ltrim($input, '#');
$hexValues = array(
'red' => substr($hex, 0, 2),
'green' => substr($hex, 2, 2),
'blue' => substr($hex, 4, 2),
'alpha' => substr($hex, 6, 2),
);
$colors = array_map('hexdec', $hexValues);
// Convert Alpha to 0..127 when provided
if (strlen($hex) > 6)
{
$colors['alpha'] = floor((255 - $colors['alpha']) / 2);
}
}
// Cannot sanitize such type
else
{
return $colors;
}
// Make sure each value is within the allowed range
foreach ($colors as &$value)
{
$value = max(0, min(255, (float) $value));
}
$colors['alpha'] = min(127, $colors['alpha']);
return $colors;
}
}