1096 lines
28 KiB
PHP
1096 lines
28 KiB
PHP
<?php
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/**
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* @package dompdf
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* @link http://dompdf.github.com/
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* @author Benj Carson <benjcarson@digitaljunkies.ca>
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* @author Fabien Ménager <fabien.menager@gmail.com>
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* @license http://www.gnu.org/copyleft/lesser.html GNU Lesser General Public License
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*/
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namespace Dompdf\Adapter;
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use Dompdf\Canvas;
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use Dompdf\Dompdf;
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use Dompdf\Image\Cache;
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use Dompdf\Helpers;
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/**
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* Image rendering interface
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*
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* Renders to an image format supported by GD (jpeg, gif, png, xpm).
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* Not super-useful day-to-day but handy nonetheless
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*
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* @package dompdf
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*/
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class GD implements Canvas
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{
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/**
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* @var Dompdf
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*/
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private $_dompdf;
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/**
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* Resource handle for the image
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*
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* @var resource
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*/
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private $_img;
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/**
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* Resource handle for the image
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*
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* @var resource[]
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*/
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private $_imgs;
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/**
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* Apparent canvas width in pixels
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*
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* @var int
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*/
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private $_width;
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/**
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* Apparent canvas height in pixels
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*
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* @var int
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*/
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private $_height;
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/**
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* Actual image width in pixels
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*
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* @var int
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*/
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private $_actual_width;
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/**
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* Actual image height in pixels
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*
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* @var int
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*/
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private $_actual_height;
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/**
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* Current page number
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*
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* @var int
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*/
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private $_page_number;
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/**
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* Total number of pages
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*
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* @var int
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*/
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private $_page_count;
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/**
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* Image antialias factor
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*
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* @var float
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*/
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private $_aa_factor;
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/**
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* Allocated colors
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*
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* @var array
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*/
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private $_colors;
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/**
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* Background color
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*
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* @var int
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*/
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private $_bg_color;
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/**
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* Background color array
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*
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* @var int
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*/
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private $_bg_color_array;
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/**
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* Actual DPI
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*
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* @var int
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*/
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private $dpi;
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/**
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* Amount to scale font sizes
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*
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* Font sizes are 72 DPI, GD internally uses 96. Scale them proportionally.
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* 72 / 96 = 0.75.
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*
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* @var float
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*/
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const FONT_SCALE = 0.75;
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/**
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* Class constructor
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*
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* @param mixed $size The size of image to create: array(x1,y1,x2,y2) or "letter", "legal", etc.
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* @param string $orientation The orientation of the document (either 'landscape' or 'portrait')
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* @param Dompdf $dompdf
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* @param float $aa_factor Anti-aliasing factor, 1 for no AA
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* @param array $bg_color Image background color: array(r,g,b,a), 0 <= r,g,b,a <= 1
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*/
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public function __construct($size = 'letter', $orientation = "portrait", Dompdf $dompdf, $aa_factor = 1.0, $bg_color = array(1, 1, 1, 0))
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{
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if (!is_array($size)) {
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$size = strtolower($size);
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if (isset(CPDF::$PAPER_SIZES[$size])) {
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$size = CPDF::$PAPER_SIZES[$size];
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} else {
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$size = CPDF::$PAPER_SIZES["letter"];
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}
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}
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if (strtolower($orientation) === "landscape") {
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list($size[2], $size[3]) = array($size[3], $size[2]);
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}
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$this->_dompdf = $dompdf;
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$this->dpi = $this->get_dompdf()->getOptions()->getDpi();
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if ($aa_factor < 1) {
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$aa_factor = 1;
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}
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$this->_aa_factor = $aa_factor;
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$size[2] *= $aa_factor;
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$size[3] *= $aa_factor;
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$this->_width = $size[2] - $size[0];
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$this->_height = $size[3] - $size[1];
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$this->_actual_width = $this->_upscale($this->_width);
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$this->_actual_height = $this->_upscale($this->_height);
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$this->_page_number = $this->_page_count = 1;
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$this->_page_text = array();
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if (is_null($bg_color) || !is_array($bg_color)) {
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// Pure white bg
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$bg_color = array(1, 1, 1, 0);
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}
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$this->_bg_color_array = $bg_color;
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$this->new_page();
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}
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/**
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* @return Dompdf
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*/
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public function get_dompdf()
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{
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return $this->_dompdf;
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}
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/**
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* Return the GF image resource
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*
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* @return resource
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*/
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public function get_image()
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{
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return $this->_img;
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}
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/**
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* Return the image's width in pixels
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*
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* @return float
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*/
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public function get_width()
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{
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return $this->_width / $this->_aa_factor;
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}
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/**
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* Return the image's height in pixels
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*
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* @return float
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*/
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public function get_height()
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{
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return $this->_height / $this->_aa_factor;
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}
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/**
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* Returns the current page number
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* @return int
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*/
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public function get_page_number()
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{
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return $this->_page_number;
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}
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/**
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* Returns the total number of pages in the document
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* @return int
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*/
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public function get_page_count()
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{
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return $this->_page_count;
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}
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/**
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* Sets the current page number
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*
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* @param int $num
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*/
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public function set_page_number($num)
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{
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$this->_page_number = $num;
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}
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/**
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* Sets the page count
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*
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* @param int $count
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*/
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public function set_page_count($count)
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{
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$this->_page_count = $count;
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}
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/**
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* Sets the opacity
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*
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* @param $opacity
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* @param $mode
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*/
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public function set_opacity($opacity, $mode = "Normal")
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{
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// FIXME
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}
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/**
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* Allocate a new color. Allocate with GD as needed and store
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* previously allocated colors in $this->_colors.
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*
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* @param array $color The new current color
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* @return int The allocated color
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*/
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private function _allocate_color($color)
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{
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$a = isset($color["alpha"]) ? $color["alpha"] : 1;
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if (isset($color["c"])) {
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$color = Helpers::cmyk_to_rgb($color);
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}
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list($r, $g, $b) = $color;
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$r *= 255;
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$g *= 255;
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$b *= 255;
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$a = 127 - ($a * 127);
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// Clip values
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$r = $r > 255 ? 255 : $r;
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$g = $g > 255 ? 255 : $g;
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$b = $b > 255 ? 255 : $b;
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$a = $a > 127 ? 127 : $a;
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$r = $r < 0 ? 0 : $r;
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$g = $g < 0 ? 0 : $g;
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$b = $b < 0 ? 0 : $b;
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$a = $a < 0 ? 0 : $a;
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$key = sprintf("#%02X%02X%02X%02X", $r, $g, $b, $a);
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if (isset($this->_colors[$key])) {
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return $this->_colors[$key];
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}
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if ($a != 0) {
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$this->_colors[$key] = imagecolorallocatealpha($this->get_image(), $r, $g, $b, $a);
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} else {
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$this->_colors[$key] = imagecolorallocate($this->get_image(), $r, $g, $b);
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}
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return $this->_colors[$key];
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}
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/**
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* Scales value up to the current canvas DPI from 72 DPI
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*
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* @param float $length
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* @return float
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*/
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private function _upscale($length)
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{
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return ($length * $this->dpi) / 72 * $this->_aa_factor;
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}
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/**
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* Scales value down from the current canvas DPI to 72 DPI
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*
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* @param float $length
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* @return float
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*/
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private function _downscale($length)
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{
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return ($length / $this->dpi * 72) / $this->_aa_factor;
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}
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/**
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* Draws a line from x1,y1 to x2,y2
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*
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* See {@link Style::munge_color()} for the format of the color array.
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* See {@link Cpdf::setLineStyle()} for a description of the format of the
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* $style parameter (aka dash).
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*
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* @param float $x1
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* @param float $y1
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* @param float $x2
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* @param float $y2
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* @param array $color
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* @param float $width
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* @param array $style
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*/
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public function line($x1, $y1, $x2, $y2, $color, $width, $style = null)
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{
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// Scale by the AA factor and DPI
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$x1 = $this->_upscale($x1);
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$y1 = $this->_upscale($y1);
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$x2 = $this->_upscale($x2);
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$y2 = $this->_upscale($y2);
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$width = $this->_upscale($width);
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$c = $this->_allocate_color($color);
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// Convert the style array if required
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if (is_array($style) && count($style) > 0) {
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$gd_style = array();
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if (count($style) == 1) {
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for ($i = 0; $i < $style[0] * $this->_aa_factor; $i++) {
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$gd_style[] = $c;
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}
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for ($i = 0; $i < $style[0] * $this->_aa_factor; $i++) {
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$gd_style[] = $this->_bg_color;
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}
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} else {
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$i = 0;
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foreach ($style as $length) {
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if ($i % 2 == 0) {
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// 'On' pattern
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for ($i = 0; $i < $style[0] * $this->_aa_factor; $i++) {
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$gd_style[] = $c;
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}
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} else {
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// Off pattern
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for ($i = 0; $i < $style[0] * $this->_aa_factor; $i++) {
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$gd_style[] = $this->_bg_color;
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}
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}
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$i++;
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}
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}
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if (!empty($gd_style)) {
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imagesetstyle($this->get_image(), $gd_style);
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$c = IMG_COLOR_STYLED;
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}
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}
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imagesetthickness($this->get_image(), $width);
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imageline($this->get_image(), $x1, $y1, $x2, $y2, $c);
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}
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/**
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* @param float $x1
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* @param float $y1
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* @param float $r1
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* @param float $r2
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* @param float $astart
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* @param float $aend
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* @param array $color
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* @param float $width
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* @param array $style
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*/
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public function arc($x1, $y1, $r1, $r2, $astart, $aend, $color, $width, $style = array())
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{
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// @todo
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}
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/**
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* Draws a rectangle at x1,y1 with width w and height h
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*
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* See {@link Style::munge_color()} for the format of the color array.
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* See {@link Cpdf::setLineStyle()} for a description of the $style
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* parameter (aka dash)
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*
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* @param float $x1
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* @param float $y1
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* @param float $w
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* @param float $h
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* @param array $color
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* @param float $width
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* @param array $style
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*/
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public function rectangle($x1, $y1, $w, $h, $color, $width, $style = null)
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{
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// Scale by the AA factor and DPI
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$x1 = $this->_upscale($x1);
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$y1 = $this->_upscale($y1);
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$w = $this->_upscale($w);
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$h = $this->_upscale($h);
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$width = $this->_upscale($width);
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$c = $this->_allocate_color($color);
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// Convert the style array if required
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if (is_array($style) && count($style) > 0) {
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$gd_style = array();
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foreach ($style as $length) {
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for ($i = 0; $i < $length; $i++) {
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$gd_style[] = $c;
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}
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}
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if (!empty($gd_style)) {
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imagesetstyle($this->get_image(), $gd_style);
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$c = IMG_COLOR_STYLED;
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}
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}
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imagesetthickness($this->get_image(), $width);
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imagerectangle($this->get_image(), $x1, $y1, $x1 + $w, $y1 + $h, $c);
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}
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/**
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* Draws a filled rectangle at x1,y1 with width w and height h
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*
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* See {@link Style::munge_color()} for the format of the color array.
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*
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* @param float $x1
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* @param float $y1
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* @param float $w
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* @param float $h
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* @param array $color
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*/
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public function filled_rectangle($x1, $y1, $w, $h, $color)
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{
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// Scale by the AA factor and DPI
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$x1 = $this->_upscale($x1);
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$y1 = $this->_upscale($y1);
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$w = $this->_upscale($w);
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$h = $this->_upscale($h);
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$c = $this->_allocate_color($color);
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imagefilledrectangle($this->get_image(), $x1, $y1, $x1 + $w, $y1 + $h, $c);
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}
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/**
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* Starts a clipping rectangle at x1,y1 with width w and height h
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*
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* @param float $x1
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* @param float $y1
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* @param float $w
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* @param float $h
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*/
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public function clipping_rectangle($x1, $y1, $w, $h)
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{
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// @todo
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}
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public function clipping_roundrectangle($x1, $y1, $w, $h, $rTL, $rTR, $rBR, $rBL)
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{
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// @todo
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}
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/**
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* Ends the last clipping shape
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*/
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public function clipping_end()
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{
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// @todo
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}
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/**
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*
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*/
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public function save()
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{
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$this->get_dompdf()->getOptions()->setDpi(72);
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}
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/**
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*
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*/
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public function restore()
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{
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$this->get_dompdf()->getOptions()->setDpi($this->dpi);
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}
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|
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/**
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* @param $angle
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* @param $x
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* @param $y
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*/
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public function rotate($angle, $x, $y)
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{
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// @todo
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}
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|
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/**
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* @param $angle_x
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* @param $angle_y
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* @param $x
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* @param $y
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*/
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public function skew($angle_x, $angle_y, $x, $y)
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{
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// @todo
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}
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|
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/**
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* @param $s_x
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* @param $s_y
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* @param $x
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* @param $y
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*/
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public function scale($s_x, $s_y, $x, $y)
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{
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// @todo
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}
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|
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/**
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* @param $t_x
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* @param $t_y
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*/
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public function translate($t_x, $t_y)
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{
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// @todo
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}
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|
|
/**
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* @param $a
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* @param $b
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* @param $c
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* @param $d
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* @param $e
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* @param $f
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*/
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public function transform($a, $b, $c, $d, $e, $f)
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|
{
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// @todo
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}
|
|
|
|
/**
|
|
* Draws a polygon
|
|
*
|
|
* The polygon is formed by joining all the points stored in the $points
|
|
* array. $points has the following structure:
|
|
* <code>
|
|
* array(0 => x1,
|
|
* 1 => y1,
|
|
* 2 => x2,
|
|
* 3 => y2,
|
|
* ...
|
|
* );
|
|
* </code>
|
|
*
|
|
* See {@link Style::munge_color()} for the format of the color array.
|
|
* See {@link Cpdf::setLineStyle()} for a description of the $style
|
|
* parameter (aka dash)
|
|
*
|
|
* @param array $points
|
|
* @param array $color
|
|
* @param float $width
|
|
* @param array $style
|
|
* @param bool $fill Fills the polygon if true
|
|
*/
|
|
public function polygon($points, $color, $width = null, $style = null, $fill = false)
|
|
{
|
|
|
|
// Scale each point by the AA factor and DPI
|
|
foreach (array_keys($points) as $i) {
|
|
$points[$i] = $this->_upscale($points[$i]);
|
|
}
|
|
|
|
$c = $this->_allocate_color($color);
|
|
|
|
// Convert the style array if required
|
|
if (is_array($style) && count($style) > 0 && !$fill) {
|
|
$gd_style = array();
|
|
|
|
foreach ($style as $length) {
|
|
for ($i = 0; $i < $length; $i++) {
|
|
$gd_style[] = $c;
|
|
}
|
|
}
|
|
|
|
if (!empty($gd_style)) {
|
|
imagesetstyle($this->get_image(), $gd_style);
|
|
$c = IMG_COLOR_STYLED;
|
|
}
|
|
}
|
|
|
|
imagesetthickness($this->get_image(), $width);
|
|
|
|
if ($fill) {
|
|
imagefilledpolygon($this->get_image(), $points, count($points) / 2, $c);
|
|
} else {
|
|
imagepolygon($this->get_image(), $points, count($points) / 2, $c);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Draws a circle at $x,$y with radius $r
|
|
*
|
|
* See {@link Style::munge_color()} for the format of the color array.
|
|
* See {@link Cpdf::setLineStyle()} for a description of the $style
|
|
* parameter (aka dash)
|
|
*
|
|
* @param float $x
|
|
* @param float $y
|
|
* @param float $r
|
|
* @param array $color
|
|
* @param float $width
|
|
* @param array $style
|
|
* @param bool $fill Fills the circle if true
|
|
*/
|
|
public function circle($x, $y, $r, $color, $width = null, $style = null, $fill = false)
|
|
{
|
|
// Scale by the AA factor and DPI
|
|
$x = $this->_upscale($x);
|
|
$y = $this->_upscale($y);
|
|
$r = $this->_upscale($r);
|
|
|
|
$c = $this->_allocate_color($color);
|
|
|
|
// Convert the style array if required
|
|
if (is_array($style) && count($style) > 0 && !$fill) {
|
|
$gd_style = array();
|
|
|
|
foreach ($style as $length) {
|
|
for ($i = 0; $i < $length; $i++) {
|
|
$gd_style[] = $c;
|
|
}
|
|
}
|
|
|
|
if (!empty($gd_style)) {
|
|
imagesetstyle($this->get_image(), $gd_style);
|
|
$c = IMG_COLOR_STYLED;
|
|
}
|
|
}
|
|
|
|
imagesetthickness($this->get_image(), $width);
|
|
|
|
if ($fill) {
|
|
imagefilledellipse($this->get_image(), $x, $y, $r, $r, $c);
|
|
} else {
|
|
imageellipse($this->get_image(), $x, $y, $r, $r, $c);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Add an image to the pdf.
|
|
* The image is placed at the specified x and y coordinates with the
|
|
* given width and height.
|
|
*
|
|
* @param string $img_url the path to the image
|
|
* @param float $x x position
|
|
* @param float $y y position
|
|
* @param int $w width (in pixels)
|
|
* @param int $h height (in pixels)
|
|
* @param string $resolution
|
|
* @return void
|
|
*
|
|
* @throws \Exception
|
|
* @internal param string $img_type the type (e.g. extension) of the image
|
|
*/
|
|
public function image($img_url, $x, $y, $w, $h, $resolution = "normal")
|
|
{
|
|
$img_type = Cache::detect_type($img_url, $this->get_dompdf()->getHttpContext());
|
|
|
|
if (!$img_type) {
|
|
return;
|
|
}
|
|
|
|
$func_name = "imagecreatefrom$img_type";
|
|
if (!function_exists($func_name)) {
|
|
if (!method_exists("Dompdf\Helpers", $func_name)) {
|
|
throw new \Exception("Function $func_name() not found. Cannot convert $img_type image: $img_url. Please install the image PHP extension.");
|
|
}
|
|
$func_name = "\\Dompdf\\Helpers::" . $func_name;
|
|
}
|
|
$src = @call_user_func($func_name, $img_url);
|
|
|
|
if (!$src) {
|
|
return; // Probably should add to $_dompdf_errors or whatever here
|
|
}
|
|
|
|
// Scale by the AA factor and DPI
|
|
$x = $this->_upscale($x);
|
|
$y = $this->_upscale($y);
|
|
|
|
$w = $this->_upscale($w);
|
|
$h = $this->_upscale($h);
|
|
|
|
$img_w = imagesx($src);
|
|
$img_h = imagesy($src);
|
|
|
|
imagecopyresampled($this->get_image(), $src, $x, $y, 0, 0, $w, $h, $img_w, $img_h);
|
|
}
|
|
|
|
/**
|
|
* Writes text at the specified x and y coordinates
|
|
* See {@link Style::munge_color()} for the format of the color array.
|
|
*
|
|
* @param float $x
|
|
* @param float $y
|
|
* @param string $text the text to write
|
|
* @param string $font the font file to use
|
|
* @param float $size the font size, in points
|
|
* @param array $color
|
|
* @param float $word_spacing word spacing adjustment
|
|
* @param float $char_spacing
|
|
* @param float $angle Text angle
|
|
*
|
|
* @return void
|
|
*/
|
|
public function text($x, $y, $text, $font, $size, $color = array(0, 0, 0), $word_spacing = 0.0, $char_spacing = 0.0, $angle = 0.0)
|
|
{
|
|
// Scale by the AA factor and DPI
|
|
$x = $this->_upscale($x);
|
|
$y = $this->_upscale($y);
|
|
$size = $this->_upscale($size) * self::FONT_SCALE;
|
|
|
|
$h = $this->get_font_height_actual($font, $size);
|
|
$c = $this->_allocate_color($color);
|
|
|
|
// imagettftext() converts numeric entities to their respective
|
|
// character. Preserve any originally double encoded entities to be
|
|
// represented as is.
|
|
// eg: &#160; will render   rather than its character.
|
|
$text = preg_replace('/&(#(?:x[a-fA-F0-9]+|[0-9]+);)/', '&\1', $text);
|
|
|
|
$text = mb_encode_numericentity($text, array(0x0080, 0xff, 0, 0xff), 'UTF-8');
|
|
|
|
$font = $this->get_ttf_file($font);
|
|
|
|
// FIXME: word spacing
|
|
imagettftext($this->get_image(), $size, $angle, $x, $y + $h, $c, $font, $text);
|
|
}
|
|
|
|
public function javascript($code)
|
|
{
|
|
// Not implemented
|
|
}
|
|
|
|
/**
|
|
* Add a named destination (similar to <a name="foo">...</a> in html)
|
|
*
|
|
* @param string $anchorname The name of the named destination
|
|
*/
|
|
public function add_named_dest($anchorname)
|
|
{
|
|
// Not implemented
|
|
}
|
|
|
|
/**
|
|
* Add a link to the pdf
|
|
*
|
|
* @param string $url The url to link to
|
|
* @param float $x The x position of the link
|
|
* @param float $y The y position of the link
|
|
* @param float $width The width of the link
|
|
* @param float $height The height of the link
|
|
*/
|
|
public function add_link($url, $x, $y, $width, $height)
|
|
{
|
|
// Not implemented
|
|
}
|
|
|
|
/**
|
|
* Add meta information to the PDF
|
|
*
|
|
* @param string $label label of the value (Creator, Producer, etc.)
|
|
* @param string $value the text to set
|
|
*/
|
|
public function add_info($label, $value)
|
|
{
|
|
// N/A
|
|
}
|
|
|
|
/**
|
|
* @param string $view
|
|
* @param array $options
|
|
*/
|
|
public function set_default_view($view, $options = array())
|
|
{
|
|
// N/A
|
|
}
|
|
|
|
/**
|
|
* Calculates text size, in points
|
|
*
|
|
* @param string $text the text to be sized
|
|
* @param string $font the desired font
|
|
* @param float $size the desired font size
|
|
* @param float $word_spacing word spacing, if any
|
|
* @param float $char_spacing char spacing, if any
|
|
*
|
|
* @return float
|
|
*/
|
|
public function get_text_width($text, $font, $size, $word_spacing = 0.0, $char_spacing = 0.0)
|
|
{
|
|
$font = $this->get_ttf_file($font);
|
|
$size = $this->_upscale($size) * self::FONT_SCALE;
|
|
|
|
// imagettfbbox() converts numeric entities to their respective
|
|
// character. Preserve any originally double encoded entities to be
|
|
// represented as is.
|
|
// eg: &#160; will render   rather than its character.
|
|
$text = preg_replace('/&(#(?:x[a-fA-F0-9]+|[0-9]+);)/', '&\1', $text);
|
|
|
|
$text = mb_encode_numericentity($text, array(0x0080, 0xffff, 0, 0xffff), 'UTF-8');
|
|
|
|
// FIXME: word spacing
|
|
list($x1, , $x2) = imagettfbbox($size, 0, $font, $text);
|
|
|
|
// Add additional 1pt to prevent text overflow issues
|
|
return $this->_downscale($x2 - $x1) + 1;
|
|
}
|
|
|
|
/**
|
|
* @param $font
|
|
* @return string
|
|
*/
|
|
public function get_ttf_file($font)
|
|
{
|
|
if ( stripos($font, ".ttf") === false ) {
|
|
$font .= ".ttf";
|
|
}
|
|
|
|
if (!file_exists($font)) {
|
|
$font_metrics = $this->_dompdf->getFontMetrics();
|
|
$font = $font_metrics->getFont($this->_dompdf->getOptions()->getDefaultFont()) . ".ttf";
|
|
if (!file_exists($font)) {
|
|
if (strpos($font, "mono")) {
|
|
$font = $font_metrics->getFont("DejaVu Mono") . ".ttf";
|
|
} elseif (strpos($font, "sans") !== false) {
|
|
$font = $font_metrics->getFont("DejaVu Sans") . ".ttf";
|
|
} elseif (strpos($font, "serif")) {
|
|
$font = $font_metrics->getFont("DejaVu Serif") . ".ttf";
|
|
} else {
|
|
$font = $font_metrics->getFont("DejaVu Sans") . ".ttf";
|
|
}
|
|
}
|
|
}
|
|
|
|
return $font;
|
|
}
|
|
|
|
/**
|
|
* Calculates font height, in points
|
|
*
|
|
* @param string $font
|
|
* @param float $size
|
|
* @return float
|
|
*/
|
|
public function get_font_height($font, $size)
|
|
{
|
|
$size = $this->_upscale($size) * self::FONT_SCALE;
|
|
|
|
$height = $this->get_font_height_actual($font, $size);
|
|
|
|
return $this->_downscale($height);
|
|
}
|
|
|
|
private function get_font_height_actual($font, $size)
|
|
{
|
|
$font = $this->get_ttf_file($font);
|
|
$ratio = $this->_dompdf->getOptions()->getFontHeightRatio();
|
|
|
|
// FIXME: word spacing
|
|
list(, $y2, , , , $y1) = imagettfbbox($size, 0, $font, "MXjpqytfhl"); // Test string with ascenders, descenders and caps
|
|
return ($y2 - $y1) * $ratio;
|
|
}
|
|
|
|
/**
|
|
* @param string $font
|
|
* @param float $size
|
|
* @return float
|
|
*/
|
|
public function get_font_baseline($font, $size)
|
|
{
|
|
$ratio = $this->_dompdf->getOptions()->getFontHeightRatio();
|
|
return $this->get_font_height($font, $size) / $ratio;
|
|
}
|
|
|
|
/**
|
|
* Starts a new page
|
|
*
|
|
* Subsequent drawing operations will appear on the new page.
|
|
*/
|
|
public function new_page()
|
|
{
|
|
$this->_page_number++;
|
|
$this->_page_count++;
|
|
|
|
$this->_img = imagecreatetruecolor($this->_actual_width, $this->_actual_height);
|
|
|
|
$this->_bg_color = $this->_allocate_color($this->_bg_color_array);
|
|
imagealphablending($this->_img, true);
|
|
imagesavealpha($this->_img, true);
|
|
imagefill($this->_img, 0, 0, $this->_bg_color);
|
|
|
|
$this->_imgs[] = $this->_img;
|
|
}
|
|
|
|
public function open_object()
|
|
{
|
|
// N/A
|
|
}
|
|
|
|
public function close_object()
|
|
{
|
|
// N/A
|
|
}
|
|
|
|
public function add_object()
|
|
{
|
|
// N/A
|
|
}
|
|
|
|
public function page_text()
|
|
{
|
|
// N/A
|
|
}
|
|
|
|
public function page_line()
|
|
{
|
|
// N/A
|
|
}
|
|
|
|
/**
|
|
* Streams the image to the client.
|
|
*
|
|
* @param string $filename The filename to present to the client.
|
|
* @param array $options Associative array: 'type' => jpeg|jpg|png; 'quality' => 0 - 100 (JPEG only);
|
|
* 'page' => Number of the page to output (defaults to the first); 'Attachment': 1 or 0 (default 1).
|
|
*/
|
|
public function stream($filename, $options = array())
|
|
{
|
|
if (headers_sent()) {
|
|
die("Unable to stream image: headers already sent");
|
|
}
|
|
|
|
if (!isset($options["type"])) $options["type"] = "png";
|
|
if (!isset($options["Attachment"])) $options["Attachment"] = true;
|
|
$type = strtolower($options["type"]);
|
|
|
|
switch ($type) {
|
|
case "jpg":
|
|
case "jpeg":
|
|
$contentType = "image/jpeg";
|
|
$extension = ".jpg";
|
|
break;
|
|
case "png":
|
|
default:
|
|
$contentType = "image/png";
|
|
$extension = ".png";
|
|
break;
|
|
}
|
|
|
|
header("Cache-Control: private");
|
|
header("Content-Type: $contentType");
|
|
|
|
$filename = str_replace(array("\n", "'"), "", basename($filename, ".$type")) . $extension;
|
|
$attachment = $options["Attachment"] ? "attachment" : "inline";
|
|
header(Helpers::buildContentDispositionHeader($attachment, $filename));
|
|
|
|
$this->_output($options);
|
|
flush();
|
|
}
|
|
|
|
/**
|
|
* Returns the image as a string.
|
|
*
|
|
* @param array $options Associative array: 'type' => jpeg|jpg|png; 'quality' => 0 - 100 (JPEG only);
|
|
* 'page' => Number of the page to output (defaults to the first).
|
|
* @return string
|
|
*/
|
|
public function output($options = array())
|
|
{
|
|
ob_start();
|
|
|
|
$this->_output($options);
|
|
|
|
return ob_get_clean();
|
|
}
|
|
|
|
/**
|
|
* Outputs the image stream directly.
|
|
*
|
|
* @param array $options Associative array: 'type' => jpeg|jpg|png; 'quality' => 0 - 100 (JPEG only);
|
|
* 'page' => Number of the page to output (defaults to the first).
|
|
*/
|
|
private function _output($options = array())
|
|
{
|
|
if (!isset($options["type"])) $options["type"] = "png";
|
|
if (!isset($options["page"])) $options["page"] = 1;
|
|
$type = strtolower($options["type"]);
|
|
|
|
if (isset($this->_imgs[$options["page"] - 1])) {
|
|
$img = $this->_imgs[$options["page"] - 1];
|
|
} else {
|
|
$img = $this->_imgs[0];
|
|
}
|
|
|
|
// Perform any antialiasing
|
|
if ($this->_aa_factor != 1) {
|
|
$dst_w = $this->_actual_width / $this->_aa_factor;
|
|
$dst_h = $this->_actual_height / $this->_aa_factor;
|
|
$dst = imagecreatetruecolor($dst_w, $dst_h);
|
|
imagecopyresampled($dst, $img, 0, 0, 0, 0,
|
|
$dst_w, $dst_h,
|
|
$this->_actual_width, $this->_actual_height);
|
|
} else {
|
|
$dst = $img;
|
|
}
|
|
|
|
switch ($type) {
|
|
case "jpg":
|
|
case "jpeg":
|
|
if (!isset($options["quality"])) {
|
|
$options["quality"] = 75;
|
|
}
|
|
|
|
imagejpeg($dst, null, $options["quality"]);
|
|
break;
|
|
case "png":
|
|
default:
|
|
imagepng($dst);
|
|
break;
|
|
}
|
|
|
|
if ($this->_aa_factor != 1) {
|
|
imagedestroy($dst);
|
|
}
|
|
}
|
|
}
|