/usr/share/php/dompdf/include/gd_adapter.cls.php is in php-dompdf 0.6.2+dfsg-3.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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/**
* @package dompdf
* @link http://dompdf.github.com/
* @author Benj Carson <benjcarson@digitaljunkies.ca>
* @author Fabien Ménager <fabien.menager@gmail.com>
* @license http://www.gnu.org/copyleft/lesser.html GNU Lesser General Public License
*/
/**
* Image rendering interface
*
* Renders to an image format supported by GD (jpeg, gif, png, xpm).
* Not super-useful day-to-day but handy nonetheless
*
* @package dompdf
*/
class GD_Adapter implements Canvas {
/**
* @var DOMPDF
*/
private $_dompdf;
/**
* Resource handle for the image
*
* @var resource
*/
private $_img;
/**
* Image width in pixels
*
* @var int
*/
private $_width;
/**
* Image height in pixels
*
* @var int
*/
private $_height;
/**
* Current page number
*
* @var int
*/
private $_page_number;
/**
* Total number of pages
*
* @var int
*/
private $_page_count;
/**
* Image antialias factor
*
* @var float
*/
private $_aa_factor;
/**
* Allocated colors
*
* @var array
*/
private $_colors;
/**
* Background color
*
* @var int
*/
private $_bg_color;
/**
* Class constructor
*
* @param mixed $size The size of image to create: array(x1,y1,x2,y2) or "letter", "legal", etc.
* @param string $orientation The orientation of the document (either 'landscape' or 'portrait')
* @param DOMPDF $dompdf
* @param float $aa_factor Anti-aliasing factor, 1 for no AA
* @param array $bg_color Image background color: array(r,g,b,a), 0 <= r,g,b,a <= 1
*/
function __construct($size, $orientation = "portrait", DOMPDF $dompdf, $aa_factor = 1.0, $bg_color = array(1,1,1,0) ) {
if ( !is_array($size) ) {
$size = strtolower($size);
if ( isset(CPDF_Adapter::$PAPER_SIZES[$size]) ) {
$size = CPDF_Adapter::$PAPER_SIZES[$size];
}
else {
$size = CPDF_Adapter::$PAPER_SIZES["letter"];
}
}
if ( strtolower($orientation) === "landscape" ) {
list($size[2],$size[3]) = array($size[3],$size[2]);
}
$this->_dompdf = $dompdf;
if ( $aa_factor < 1 ) {
$aa_factor = 1;
}
$this->_aa_factor = $aa_factor;
$size[2] *= $aa_factor;
$size[3] *= $aa_factor;
$this->_width = $size[2] - $size[0];
$this->_height = $size[3] - $size[1];
$this->_img = imagecreatetruecolor($this->_width, $this->_height);
if ( is_null($bg_color) || !is_array($bg_color) ) {
// Pure white bg
$bg_color = array(1,1,1,0);
}
$this->_bg_color = $this->_allocate_color($bg_color);
imagealphablending($this->_img, true);
imagesavealpha($this->_img, true);
imagefill($this->_img, 0, 0, $this->_bg_color);
}
function get_dompdf(){
return $this->_dompdf;
}
/**
* Return the GF image resource
*
* @return resource
*/
function get_image() { return $this->_img; }
/**
* Return the image's width in pixels
*
* @return float
*/
function get_width() { return $this->_width / $this->_aa_factor; }
/**
* Return the image's height in pixels
*
* @return float
*/
function get_height() { return $this->_height / $this->_aa_factor; }
/**
* Returns the current page number
* @return int
*/
function get_page_number() { return $this->_page_number; }
/**
* Returns the total number of pages in the document
* @return int
*/
function get_page_count() { return $this->_page_count; }
/**
* Sets the current page number
*
* @param int $num
*/
function set_page_number($num) { $this->_page_number = $num; }
/**
* Sets the page count
*
* @param int $count
*/
function set_page_count($count) { $this->_page_count = $count; }
/**
* Sets the opacity
*
* @param $opacity
* @param $mode
*/
function set_opacity($opacity, $mode = "Normal") {
// FIXME
}
/**
* Allocate a new color. Allocate with GD as needed and store
* previously allocated colors in $this->_colors.
*
* @param array $color The new current color
* @return int The allocated color
*/
private function _allocate_color($color) {
if ( isset($color["c"]) ) {
$color = cmyk_to_rgb($color);
}
// Full opacity if no alpha set
if ( !isset($color[3]) )
$color[3] = 0;
list($r,$g,$b,$a) = $color;
$r *= 255;
$g *= 255;
$b *= 255;
$a *= 127;
// Clip values
$r = $r > 255 ? 255 : $r;
$g = $g > 255 ? 255 : $g;
$b = $b > 255 ? 255 : $b;
$a = $a > 127 ? 127 : $a;
$r = $r < 0 ? 0 : $r;
$g = $g < 0 ? 0 : $g;
$b = $b < 0 ? 0 : $b;
$a = $a < 0 ? 0 : $a;
$key = sprintf("#%02X%02X%02X%02X", $r, $g, $b, $a);
if ( isset($this->_colors[$key]) )
return $this->_colors[$key];
if ( $a != 0 )
$this->_colors[$key] = imagecolorallocatealpha($this->_img, $r, $g, $b, $a);
else
$this->_colors[$key] = imagecolorallocate($this->_img, $r, $g, $b);
return $this->_colors[$key];
}
/**
* Draws a line from x1,y1 to x2,y2
*
* See {@link Style::munge_color()} for the format of the color array.
* See {@link Cpdf::setLineStyle()} for a description of the format of the
* $style parameter (aka dash).
*
* @param float $x1
* @param float $y1
* @param float $x2
* @param float $y2
* @param array $color
* @param float $width
* @param array $style
*/
function line($x1, $y1, $x2, $y2, $color, $width, $style = null) {
// Scale by the AA factor
$x1 *= $this->_aa_factor;
$y1 *= $this->_aa_factor;
$x2 *= $this->_aa_factor;
$y2 *= $this->_aa_factor;
$width *= $this->_aa_factor;
$c = $this->_allocate_color($color);
// Convert the style array if required
if ( !is_null($style) ) {
$gd_style = array();
if ( count($style) == 1 ) {
for ($i = 0; $i < $style[0] * $this->_aa_factor; $i++) {
$gd_style[] = $c;
}
for ($i = 0; $i < $style[0] * $this->_aa_factor; $i++) {
$gd_style[] = $this->_bg_color;
}
} else {
$i = 0;
foreach ($style as $length) {
if ( $i % 2 == 0 ) {
// 'On' pattern
for ($i = 0; $i < $style[0] * $this->_aa_factor; $i++)
$gd_style[] = $c;
} else {
// Off pattern
for ($i = 0; $i < $style[0] * $this->_aa_factor; $i++)
$gd_style[] = $this->_bg_color;
}
$i++;
}
}
imagesetstyle($this->_img, $gd_style);
$c = IMG_COLOR_STYLED;
}
imagesetthickness($this->_img, $width);
imageline($this->_img, $x1, $y1, $x2, $y2, $c);
}
function arc($x1, $y1, $r1, $r2, $astart, $aend, $color, $width, $style = array()) {
// @todo
}
/**
* Draws a rectangle at x1,y1 with width w and height h
*
* 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 $x1
* @param float $y1
* @param float $w
* @param float $h
* @param array $color
* @param float $width
* @param array $style
*/
function rectangle($x1, $y1, $w, $h, $color, $width, $style = null) {
// Scale by the AA factor
$x1 *= $this->_aa_factor;
$y1 *= $this->_aa_factor;
$w *= $this->_aa_factor;
$h *= $this->_aa_factor;
$c = $this->_allocate_color($color);
// Convert the style array if required
if ( !is_null($style) ) {
$gd_style = array();
foreach ($style as $length) {
for ($i = 0; $i < $length; $i++) {
$gd_style[] = $c;
}
}
imagesetstyle($this->_img, $gd_style);
$c = IMG_COLOR_STYLED;
}
imagesetthickness($this->_img, $width);
imagerectangle($this->_img, $x1, $y1, $x1 + $w, $y1 + $h, $c);
}
/**
* Draws a filled rectangle at x1,y1 with width w and height h
*
* See {@link Style::munge_color()} for the format of the color array.
*
* @param float $x1
* @param float $y1
* @param float $w
* @param float $h
* @param array $color
*/
function filled_rectangle($x1, $y1, $w, $h, $color) {
// Scale by the AA factor
$x1 *= $this->_aa_factor;
$y1 *= $this->_aa_factor;
$w *= $this->_aa_factor;
$h *= $this->_aa_factor;
$c = $this->_allocate_color($color);
imagefilledrectangle($this->_img, $x1, $y1, $x1 + $w, $y1 + $h, $c);
}
/**
* Starts a clipping rectangle at x1,y1 with width w and height h
*
* @param float $x1
* @param float $y1
* @param float $w
* @param float $h
*/
function clipping_rectangle($x1, $y1, $w, $h) {
// @todo
}
function clipping_roundrectangle($x1, $y1, $w, $h, $rTL, $rTR, $rBR, $rBL) {
// @todo
}
/**
* Ends the last clipping shape
*/
function clipping_end() {
// @todo
}
function save() {
// @todo
}
function restore() {
// @todo
}
function rotate($angle, $x, $y) {
// @todo
}
function skew($angle_x, $angle_y, $x, $y) {
// @todo
}
function scale($s_x, $s_y, $x, $y) {
// @todo
}
function translate($t_x, $t_y) {
// @todo
}
function transform($a, $b, $c, $d, $e, $f) {
// @todo
}
/**
* 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 $fill Fills the polygon if true
*/
function polygon($points, $color, $width = null, $style = null, $fill = false) {
// Scale each point by the AA factor
foreach (array_keys($points) as $i)
$points[$i] *= $this->_aa_factor;
$c = $this->_allocate_color($color);
// Convert the style array if required
if ( !is_null($style) && !$fill ) {
$gd_style = array();
foreach ($style as $length) {
for ($i = 0; $i < $length; $i++) {
$gd_style[] = $c;
}
}
imagesetstyle($this->_img, $gd_style);
$c = IMG_COLOR_STYLED;
}
imagesetthickness($this->_img, $width);
if ( $fill )
imagefilledpolygon($this->_img, $points, count($points) / 2, $c);
else
imagepolygon($this->_img, $points, count($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 $fill Fills the circle if true
*/
function circle($x, $y, $r, $color, $width = null, $style = null, $fill = false) {
// Scale by the AA factor
$x *= $this->_aa_factor;
$y *= $this->_aa_factor;
$r *= $this->_aa_factor;
$c = $this->_allocate_color($color);
// Convert the style array if required
if ( !is_null($style) && !$fill ) {
$gd_style = array();
foreach ($style as $length) {
for ($i = 0; $i < $length; $i++) {
$gd_style[] = $c;
}
}
imagesetstyle($this->_img, $gd_style);
$c = IMG_COLOR_STYLED;
}
imagesetthickness($this->_img, $width);
if ( $fill )
imagefilledellipse($this->_img, $x, $y, $r, $r, $c);
else
imageellipse($this->_img, $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
* @internal param string $img_type the type (e.g. extension) of the image
*/
function image($img_url, $x, $y, $w, $h, $resolution = "normal") {
$img_type = Image_Cache::detect_type($img_url, $this->_dompdf->get_http_context());
$img_ext = Image_Cache::type_to_ext($img_type);
if ( !$img_ext ) {
return;
}
$func = "imagecreatefrom$img_ext";
$src = @$func($img_url);
if ( !$src ) {
return; // Probably should add to $_dompdf_errors or whatever here
}
// Scale by the AA factor
$x *= $this->_aa_factor;
$y *= $this->_aa_factor;
$w *= $this->_aa_factor;
$h *= $this->_aa_factor;
$img_w = imagesx($src);
$img_h = imagesy($src);
imagecopyresampled($this->_img, $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 $angle Text angle
*
* @return void
*/
function text($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
$x *= $this->_aa_factor;
$y *= $this->_aa_factor;
$size *= $this->_aa_factor;
$h = $this->get_font_height($font, $size);
$c = $this->_allocate_color($color);
$text = mb_encode_numericentity($text, array(0x0080, 0xff, 0, 0xff), 'UTF-8');
$font = $this->get_ttf_file($font);
// FIXME: word spacing
@imagettftext($this->_img, $size, $angle, $x, $y + $h, $c, $font, $text);
}
function javascript($code) {
// Not implemented
}
/**
* Add a named destination (similar to <a name="foo">...</a> in html)
*
* @param string $anchorname The name of the named destination
*/
function add_named_dest($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 $height The height of the link
*/
function add_link($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 $value the text to set
*/
function add_info($label, $value) {
// N/A
}
function set_default_view($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 $char_spacing char spacing, if any
*
* @return float
*/
function get_text_width($text, $font, $size, $word_spacing = 0.0, $char_spacing = 0.0) {
$font = $this->get_ttf_file($font);
$text = mb_encode_numericentity($text, array(0x0080, 0xffff, 0, 0xffff), 'UTF-8');
// FIXME: word spacing
list($x1,,$x2) = @imagettfbbox($size, 0, $font, $text);
return $x2 - $x1;
}
function get_ttf_file($font) {
if ( strpos($font, '.ttf') === false )
$font .= ".ttf";
/*$filename = substr(strtolower(basename($font)), 0, -4);
if ( in_array($filename, DOMPDF::$native_fonts) ) {
return "arial.ttf";
}*/
return $font;
}
/**
* Calculates font height, in points
*
* @param string $font
* @param float $size
* @return float
*/
function get_font_height($font, $size) {
$font = $this->get_ttf_file($font);
$ratio = $this->_dompdf->get_option("font_height_ratio");
// FIXME: word spacing
list(,$y2,,,,$y1) = imagettfbbox($size, 0, $font, "MXjpqytfhl"); // Test string with ascenders, descenders and caps
return ($y2 - $y1) * $ratio;
}
function get_font_baseline($font, $size) {
$ratio = $this->_dompdf->get_option("font_height_ratio");
return $this->get_font_height($font, $size) / $ratio;
}
/**
* Starts a new page
*
* Subsequent drawing operations will appear on the new page.
*/
function new_page() {
$this->_page_number++;
$this->_page_count++;
}
function open_object(){
// N/A
}
function close_object(){
// N/A
}
function add_object(){
// N/A
}
function page_text(){
// N/A
}
/**
* Streams the image directly to the browser
*
* @param string $filename the name of the image file (ignored)
* @param array $options associative array, 'type' => jpeg|jpg|png, 'quality' => 0 - 100 (jpeg only)
*/
function stream($filename, $options = null) {
// Perform any antialiasing
if ( $this->_aa_factor != 1 ) {
$dst_w = $this->_width / $this->_aa_factor;
$dst_h = $this->_height / $this->_aa_factor;
$dst = imagecreatetruecolor($dst_w, $dst_h);
imagecopyresampled($dst, $this->_img, 0, 0, 0, 0,
$dst_w, $dst_h,
$this->_width, $this->_height);
} else {
$dst = $this->_img;
}
if ( !isset($options["type"]) )
$options["type"] = "png";
$type = strtolower($options["type"]);
header("Cache-Control: private");
switch ($type) {
case "jpg":
case "jpeg":
if ( !isset($options["quality"]) )
$options["quality"] = 75;
header("Content-type: image/jpeg");
imagejpeg($dst, '', $options["quality"]);
break;
case "png":
default:
header("Content-type: image/png");
imagepng($dst);
break;
}
if ( $this->_aa_factor != 1 )
imagedestroy($dst);
}
/**
* Returns the PNG as a string
*
* @param array $options associative array, 'type' => jpeg|jpg|png, 'quality' => 0 - 100 (jpeg only)
* @return string
*/
function output($options = null) {
if ( $this->_aa_factor != 1 ) {
$dst_w = $this->_width / $this->_aa_factor;
$dst_h = $this->_height / $this->_aa_factor;
$dst = imagecreatetruecolor($dst_w, $dst_h);
imagecopyresampled($dst, $this->_img, 0, 0, 0, 0,
$dst_w, $dst_h,
$this->_width, $this->_height);
} else {
$dst = $this->_img;
}
if ( !isset($options["type"]) )
$options["type"] = "png";
$type = $options["type"];
ob_start();
switch ($type) {
case "jpg":
case "jpeg":
if ( !isset($options["quality"]) )
$options["quality"] = 75;
imagejpeg($dst, '', $options["quality"]);
break;
case "png":
default:
imagepng($dst);
break;
}
$image = ob_get_clean();
if ( $this->_aa_factor != 1 )
imagedestroy($dst);
return $image;
}
}
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