/usr/share/php/Horde/Image/Im.php is in php-horde-image 2.1.0-4.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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/**
* This class implements the Horde_Image:: API for ImageMagick.
*
* Copyright 2002-2014 Horde LLC (http://www.horde.org/)
*
* See the enclosed file COPYING for license information (LGPL). If you
* did not receive this file, see http://www.horde.org/licenses/lgpl21.
*
* @author Chuck Hagenbuch <chuck@horde.org>
* @author Mike Cochrane <mike@graftonhall.co.nz>
* @author Michael J. Rubinsky <mrubinsk@horde.org>
* @package Image
*/
class Horde_Image_Im extends Horde_Image_Base
{
/**
* Capabilites of this driver.
*
* @var array
*/
protected $_capabilities = array(
'resize',
'crop',
'rotate',
'grayscale',
'flip',
'mirror',
'sepia',
'canvas',
'multipage',
'pdf');
/**
* Operations to be performed before the source filename is specified on the
* command line.
*
* @var array
*/
protected $_operations = array();
/**
* Operations to be added after the source filename is specified on the
* command line.
*
* @var array
*/
protected $_postSrcOperations = array();
/**
* An array of temporary filenames that need to be unlinked at the end of
* processing. Use addFileToClean() from client code (Effects) to add files
* to this array.
*
* @var array
*/
protected $_toClean = array();
/**
* Path to the convert binary
*
* @string
*/
protected $_convert = '';
/**
* Path to the identify binary
*
* @string
*/
protected $_identify;
/**
* Cache the number of image pages
*
* @var integer
*/
private $_pages;
/**
* Track current page for the iterator
*
* @var integer
*/
private $_currentPage = 0;
/**
* Constructor.
*
* @see Horde_Image_Base::_construct
*/
public function __construct($params, $context = array())
{
parent::__construct($params, $context);
if (empty($context['convert'])) {
throw new InvalidArgumentException('A path to the convert binary is required.');
}
$this->_convert = $context['convert'];
if (!empty($context['identify'])) {
$this->_identify = $context['identify'];
}
if (!empty($params['filename'])) {
$this->loadFile($params['filename']);
} elseif (!empty($params['data'])) {
$this->loadString($params['data']);
} else {
$cmd = "-size {$this->_width}x{$this->_height} xc:{$this->_background} +profile \"*\" {$this->_type}:__FILEOUT__";
$this->executeConvertCmd($cmd);
}
}
/**
* Publically visible raw method.
*
* @see self::_raw
*/
public function raw($convert = false)
{
return $this->_raw($convert);
}
/**
* Returns the raw data for this image.
*
* @param boolean $convert If true, the image data will be returned in the
* target format, even if no other image operations
* are present, otherwise, if no operations are
* present, the current raw data is returned
* unmodified.
*
* @return string The raw image data.
*/
private function _raw($convert = false, $index = 0, $preserve_data = false)
{
if (empty($this->_data) ||
// If there are no operations, and we already have data, don't
// bother writing out files, just return the current data.
(!$convert &&
!count($this->_operations) &&
!count($this->_postSrcOperations))) {
return $this->_data;
}
$tmpin = $this->toFile($this->_data);
// Perform convert command if needed
if (count($this->_operations) || count($this->_postSrcOperations) || $convert) {
$tmpout = Horde_Util::getTempFile('img', false, $this->_tmpdir);
$command = $this->_convert . ' ' . implode(' ', $this->_operations)
. ' "' . $tmpin . '"\'[' . $index . ']\' '
. implode(' ', $this->_postSrcOperations)
. ' +profile "*" ' . $this->_type . ':"' . $tmpout . '" 2>&1';
$this->_logDebug(sprintf("convert command executed by Horde_Image_im::raw(): %s", $command));
exec($command, $output, $retval);
if ($retval) {
$error = sprintf("Error running command: %s", $command . "\n" . implode("\n", $output));
$this->_logErr($error);
throw new Horde_Image_Exception($error);
}
/* Empty the operations queue */
$this->_operations = array();
$this->_postSrcOperations = array();
/* Load the result */
$return = file_get_contents($tmpout);
if (!$preserve_data) {
$this->_data = $return;
}
}
@unlink($tmpin);
@unlink($tmpout);
return $return;
}
/**
* Reset the image data.
*/
public function reset()
{
parent::reset();
$this->_operations = array();
$this->_postSrcOperations = array();
$this->clearGeometry();
}
/**
* Resize the current image. This operation takes place immediately.
*
* @param integer $width The new width.
* @param integer $height The new height.
* @param boolean $ratio Maintain original aspect ratio.
* @param boolean $keepProfile Keep the image meta data.
*/
public function resize($width, $height, $ratio = true, $keepProfile = false)
{
$resWidth = $width * 2;
$resHeight = $height * 2;
$this->_operations[] = "-size {$resWidth}x{$resHeight}";
if ($ratio) {
$this->_postSrcOperations[] = (($keepProfile) ? "-resize" : "-thumbnail") . " {$width}x{$height}";
} else {
$this->_postSrcOperations[] = (($keepProfile) ? "-resize" : "-thumbnail") . " {$width}x{$height}!";
}
// Reset the width and height instance variables since after resize
// we don't know the *exact* dimensions yet (especially if we maintained
// aspect ratio.
// Refresh the data
$this->raw();
$this->clearGeometry();
}
/**
* Crop the current image.
*
* @param integer $x1 x for the top left corner
* @param integer $y1 y for the top left corner
* @param integer $x2 x for the bottom right corner of the cropped image.
* @param integer $y2 y for the bottom right corner of the cropped image.
*/
public function crop($x1, $y1, $x2, $y2)
{
$line = ($x2 - $x1) . 'x' . ($y2 - $y1) . '+' . $x1 . '+' . $y1;
$this->_operations[] = '-crop ' . $line . ' +repage';
// Reset width/height since these might change
$this->raw();
$this->clearGeometry();
}
/**
* Rotate the current image. This is an atomic operation.
*
* @param integer $angle The angle to rotate the image by,
* in the clockwise direction.
* @param integer $background The background color to fill any triangles.
*/
public function rotate($angle, $background = 'white')
{
$this->raw();
$this->_operations[] = "-background $background -rotate {$angle}";
$this->raw();
// Reset width/height since these might have changed
$this->clearGeometry();
}
/**
* Flip the current image.
*/
public function flip()
{
$this->_operations[] = '-flip';
}
/**
* Mirror the current image.
*/
public function mirror()
{
$this->_operations[] = '-flop';
}
/**
* Convert the current image to grayscale.
*/
public function grayscale()
{
$this->_postSrcOperations[] = '-colorspace GRAY';
}
/**
* Sepia filter.
*
* @param integer $threshold Extent of sepia effect.
*/
public function sepia($threshold = 85)
{
$this->_operations[] = '-sepia-tone ' . $threshold . '%';
}
/**
* Draws a text string on the image in a specified location, with
* the specified style information.
*
* @TODO: Need to differentiate between the stroke (border) and the fill color,
* but this is a BC break, since we were just not providing a border.
*
* @param string $text The text to draw.
* @param integer $x The left x coordinate of the start of the text string.
* @param integer $y The top y coordinate of the start of the text string.
* @param string $font The font identifier you want to use for the text.
* @param string $color The color that you want the text displayed in.
* @param integer $direction An integer that specifies the orientation of the text.
* @param string $fontsize Size of the font (small, medium, large, giant)
*/
public function text($string, $x, $y, $font = '', $color = 'black', $direction = 0, $fontsize = 'small')
{
$string = addslashes('"' . $string . '"');
$fontsize = Horde_Image::getFontSize($fontsize);
$this->_postSrcOperations[] = "-fill $color " . (!empty($font) ? "-font $font" : '') . " -pointsize $fontsize -gravity northwest -draw \"text $x,$y $string\" -fill none";
}
/**
* Draw a circle.
*
* @param integer $x The x coordinate of the centre.
* @param integer $y The y coordinate of the centre.
* @param integer $r The radius of the circle.
* @param string $color The line color of the circle.
* @param string $fill The color to fill the circle.
*/
public function circle($x, $y, $r, $color, $fill = 'none')
{
$xMax = $x + $r;
$this->_postSrcOperations[] = "-stroke $color -fill $fill -draw \"circle $x,$y $xMax,$y\" -stroke none -fill none";
}
/**
* Draw a polygon based on a set of vertices.
*
* @param array $vertices An array of x and y labeled arrays
* (eg. $vertices[0]['x'], $vertices[0]['y'], ...).
* @param string $color The color you want to draw the polygon with.
* @param string $fill The color to fill the polygon.
*/
public function polygon($verts, $color, $fill = 'none')
{
$command = '';
foreach ($verts as $vert) {
$command .= sprintf(' %d,%d', $vert['x'], $vert['y']);
}
$this->_postSrcOperations[] = "-stroke $color -fill $fill -draw \"polygon $command\" -stroke none -fill none";
}
/**
* Draw a rectangle.
*
* @param integer $x The left x-coordinate of the rectangle.
* @param integer $y The top y-coordinate of the rectangle.
* @param integer $width The width of the rectangle.
* @param integer $height The height of the rectangle.
* @param string $color The line color of the rectangle.
* @param string $fill The color to fill the rectangle.
*/
public function rectangle($x, $y, $width, $height, $color, $fill = 'none')
{
$xMax = $x + $width;
$yMax = $y + $height;
$this->_postSrcOperations[] = "-stroke $color -fill $fill -draw \"rectangle $x,$y $xMax,$yMax\" -stroke none -fill none";
}
/**
* Draw a rounded rectangle.
*
* @param integer $x The left x-coordinate of the rectangle.
* @param integer $y The top y-coordinate of the rectangle.
* @param integer $width The width of the rectangle.
* @param integer $height The height of the rectangle.
* @param integer $round The width of the corner rounding.
* @param string $color The line color of the rectangle.
* @param string $fill The color to fill the rounded rectangle with.
*/
public function roundedRectangle($x, $y, $width, $height, $round, $color, $fill)
{
$x1 = $x + $width;
$y1 = $y + $height;
$this->_postSrcOperations[] = "-stroke $color -fill $fill -draw \"roundRectangle $x,$y $x1,$y1 $round,$round\" -stroke none -fill none";
}
/**
* Draw a line.
*
* @param integer $x0 The x coordinate of the start.
* @param integer $y0 The y coordinate of the start.
* @param integer $x1 The x coordinate of the end.
* @param integer $y1 The y coordinate of the end.
* @param string $color The line color.
* @param string $width The width of the line.
*/
public function line($x0, $y0, $x1, $y1, $color = 'black', $width = 1)
{
$this->_operations[] = "-stroke $color -strokewidth $width -draw \"line $x0,$y0 $x1,$y1\"";
}
/**
* Draw a dashed line.
*
* @param integer $x0 The x co-ordinate of the start.
* @param integer $y0 The y co-ordinate of the start.
* @param integer $x1 The x co-ordinate of the end.
* @param integer $y1 The y co-ordinate of the end.
* @param string $color The line color.
* @param string $width The width of the line.
* @param integer $dash_length The length of a dash on the dashed line
* @param integer $dash_space The length of a space in the dashed line
*/
public function dashedLine($x0, $y0, $x1, $y1, $color = 'black', $width = 1, $dash_length = 2, $dash_space = 2)
{
$this->_operations[] = "-stroke $color -strokewidth $width -draw \"line $x0,$y0 $x1,$y1\"";
}
/**
* Draw a polyline (a non-closed, non-filled polygon) based on a
* set of vertices.
*
* @param array $vertices An array of x and y labeled arrays
* (eg. $vertices[0]['x'], $vertices[0]['y'], ...).
* @param string $color The color you want to draw the line with.
* @param string $width The width of the line.
*/
public function polyline($verts, $color, $width = 1)
{
$command = '';
foreach ($verts as $vert) {
$command .= sprintf(' %d,%d', $vert['x'], $vert['y']);
}
$this->_operations[] = "-stroke $color -strokewidth $width -fill none -draw \"polyline $command\" -strokewidth 1 -stroke none -fill none";
}
/**
* Draw an arc.
*
* @param integer $x The x coordinate of the centre.
* @param integer $y The y coordinate of the centre.
* @param integer $r The radius of the arc.
* @param integer $start The start angle of the arc.
* @param integer $end The end angle of the arc.
* @param string $color The line color of the arc.
* @param string $fill The fill color of the arc (defaults to none).
*/
public function arc($x, $y, $r, $start, $end, $color = 'black', $fill = 'none')
{
// Split up arcs greater than 180 degrees into two pieces.
$this->_postSrcOperations[] = "-stroke $color -fill $fill";
$mid = round(($start + $end) / 2);
$x = round($x);
$y = round($y);
$r = round($r);
if ($mid > 90) {
$this->_postSrcOperations[] = "-draw \"ellipse $x,$y $r,$r $start,$mid\"";
$this->_postSrcOperations[] = "-draw \"ellipse $x,$y $r,$r $mid,$end\"";
} else {
$this->_postSrcOperations[] = "-draw \"ellipse $x,$y $r,$r $start,$end\"";
}
// If filled, draw the outline.
if (!empty($fill)) {
list($x1, $y1) = Horde_Image::circlePoint($start, $r * 2);
list($x2, $y2) = Horde_Image::circlePoint($mid, $r * 2);
list($x3, $y3) = Horde_Image::circlePoint($end, $r * 2);
// This seems to result in slightly better placement of
// pie slices.
$x++;
$y++;
$verts = array(array('x' => $x + $x3, 'y' => $y + $y3),
array('x' => $x, 'y' => $y),
array('x' => $x + $x1, 'y' => $y + $y1));
if ($mid > 90) {
$verts1 = array(array('x' => $x + $x2, 'y' => $y + $y2),
array('x' => $x, 'y' => $y),
array('x' => $x + $x1, 'y' => $y + $y1));
$verts2 = array(array('x' => $x + $x3, 'y' => $y + $y3),
array('x' => $x, 'y' => $y),
array('x' => $x + $x2, 'y' => $y + $y2));
$this->polygon($verts1, $fill, $fill);
$this->polygon($verts2, $fill, $fill);
} else {
$this->polygon($verts, $fill, $fill);
}
$this->polyline($verts, $color);
$this->_postSrcOperations[] = '-stroke none -fill none';
}
}
public function applyEffects()
{
$this->raw();
foreach ($this->_toClean as $tempfile) {
@unlink($tempfile);
}
}
/**
* Method to execute a raw command directly in convert. Useful for executing
* more involved operations that may require multiple convert commands
* piped into each other for example. Really designed for use by im based
* Horde_Image_Effect objects..
*
* The input and output files are quoted and substituted for __FILEIN__ and
* __FILEOUT__ respectfully. In order to support piped convert commands, the
* path to the convert command is substitued for __CONVERT__ (but the
* initial convert command is added automatically).
*
* @param string $cmd The command string, with substitutable tokens
* @param array $values Any values that should be substituted for tokens.
*
* @return
*/
public function executeConvertCmd($cmd, $values = array())
{
// First, get a temporary file for the input
if (strpos($cmd, '__FILEIN__') !== false) {
$tmpin = $this->toFile($this->_data);
} else {
$tmpin = '';
}
// Now an output file
$tmpout = Horde_Util::getTempFile('img', false, $this->_tmpdir);
// Substitue them in the cmd string
$cmd = str_replace(array('__FILEIN__', '__FILEOUT__', '__CONVERT__'),
array('"' . $tmpin . '"', '"' . $tmpout . '"', $this->_convert),
$cmd);
//TODO: See what else needs to be replaced.
$cmd = $this->_convert . ' ' . $cmd . ' 2>&1';
// Log it
$this->_logDebug(sprintf("convert command executed by Horde_Image_im::executeConvertCmd(): %s", $cmd));
exec($cmd, $output, $retval);
if ($retval) {
$this->_logErr(sprintf("Error running command: %s", $cmd . "\n" . implode("\n", $output)));
}
$this->_data = file_get_contents($tmpout);
@unlink($tmpin);
@unlink($tmpout);
}
/**
* Get the version of the convert command available. This needs to be
* publicly visable since it's used by various Effects.
*
* @return A version string suitable for using in version_compare()
*/
public function getIMVersion()
{
static $version = null;
if (!is_array($version)) {
$commandline = $this->_convert . ' --version';
exec($commandline, $output, $retval);
if (preg_match('/([0-9])\.([0-9])\.([0-9])/', $output[0], $matches)) {
$version = $matches;
return $matches;
} else {
return false;
}
}
return $version;
}
public function addPostSrcOperation($operation)
{
$this->_postSrcOperations[] = $operation;
}
public function addOperation($operation)
{
$this->_operations[] = $operation;
}
public function addFileToClean($filename)
{
$this->_toClean[] = $filename;
}
public function getConvertPath()
{
return $this->_convert;
}
/**
* Reset the imagick iterator to the first image in the set.
*
* @return void
*/
public function rewind()
{
$this->_logDebug('Horde_Image_Im#rewind');
$this->_currentPage = 0;
}
/**
* Return the current image from the internal iterator.
*
* @return Horde_Image_Imagick
*/
public function current()
{
$this->_logDebug('Horde_Image_Im#current');
return $this->getImageAtIndex($this->_currentPage);
}
/**
* Get the index of the internal iterator.
*
* @return integer
*/
public function key()
{
$this->_logDebug('Horde_Image_Im#key');
return $this->_currentPage;
}
/**
* Advance the iterator
*
* @return Horde_Image_Im
*/
public function next()
{
$this->_logDebug('Horde_Image_Im#next');
$this->_currentPage++;
if ($this->valid()) {
return $this->getImageAtIndex($this->_currentPage);
}
}
/**
* Deterimines if the current iterator item is valid.
*
* @return boolean
*/
public function valid()
{
return $this->_currentPage < $this->getImagePageCount();
}
/**
* Request a specific image from the collection of images.
*
* @param integer $index The index to return
*
* @return Horde_Image_Base
*/
public function getImageAtIndex($index)
{
$this->_logDebug('Horde_Image_Im#getImageAtIndex: ' . $index);
if ($index >= $this->getImagePageCount()) {
throw new Horde_Image_Exception('Image index out of bounds.');
}
$rawImage = $this->_raw(true, $index, true);
$image = new Horde_Image_Im(array('data' => $rawImage), $this->_context);
return $image;
}
/**
* Return the number of image pages available in the image object.
*
* @return integer
*/
public function getImagePageCount()
{
if (is_null($this->_pages)) {
$pages = $this->_getImagePages();
$this->_pages = array_pop($pages);
}
$this->_logDebug('Horde_Image_Im#getImagePageCount: ' . $this->_pages);
return $this->_pages;
}
private function _getImagePages()
{
$this->_logDebug('Horde_Image_Im#_getImagePages');
$filename = $this->toFile();
$cmd = $this->_identify . ' -format "%n" ' . $filename;
exec($cmd, $output, $retval);
if ($retval) {
$this->_logErr(sprintf("Error running command: %s", $cmd . "\n" . implode("\n", $output)));
}
unlink($filename);
return $output;
}
}
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