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<?php
/**
* @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 reflower class
*
* @access private
* @package dompdf
*/
class Image_Frame_Reflower extends Frame_Reflower {
function __construct(Image_Frame_Decorator $frame) {
parent::__construct($frame);
}
function reflow(Block_Frame_Decorator $block = null) {
$this->_frame->position();
//FLOAT
//$frame = $this->_frame;
//$page = $frame->get_root();
//$enable_css_float = $this->get_dompdf()->get_option("enable_css_float");
//if ($enable_css_float && $frame->get_style()->float !== "none" ) {
// $page->add_floating_frame($this);
//}
// Set the frame's width
$this->get_min_max_width();
if ( $block ) {
$block->add_frame_to_line($this->_frame);
}
}
function get_min_max_width() {
if (DEBUGPNG) {
// Determine the image's size. Time consuming. Only when really needed?
list($img_width, $img_height) = dompdf_getimagesize($this->_frame->get_image_url());
print "get_min_max_width() ".
$this->_frame->get_style()->width.' '.
$this->_frame->get_style()->height.';'.
$this->_frame->get_parent()->get_style()->width." ".
$this->_frame->get_parent()->get_style()->height.";".
$this->_frame->get_parent()->get_parent()->get_style()->width.' '.
$this->_frame->get_parent()->get_parent()->get_style()->height.';'.
$img_width. ' '.
$img_height.'|' ;
}
$style = $this->_frame->get_style();
$width_forced = true;
$height_forced = true;
//own style auto or invalid value: use natural size in px
//own style value: ignore suffix text including unit, use given number as px
//own style %: walk up parent chain until found available space in pt; fill available space
//
//special ignored unit: e.g. 10ex: e treated as exponent; x ignored; 10e completely invalid ->like auto
$width = ($style->width > 0 ? $style->width : 0);
if ( is_percent($width) ) {
$t = 0.0;
for ($f = $this->_frame->get_parent(); $f; $f = $f->get_parent()) {
$f_style = $f->get_style();
$t = $f_style->length_in_pt($f_style->width);
if ($t != 0) {
break;
}
}
$width = ((float)rtrim($width,"%") * $t)/100; //maybe 0
} elseif ( !mb_strpos($width, 'pt') ) {
// Don't set image original size if "%" branch was 0 or size not given.
// Otherwise aspect changed on %/auto combination for width/height
// Resample according to px per inch
// See also List_Bullet_Image_Frame_Decorator::__construct
$width = $style->length_in_pt($width);
}
$height = ($style->height > 0 ? $style->height : 0);
if ( is_percent($height) ) {
$t = 0.0;
for ($f = $this->_frame->get_parent(); $f; $f = $f->get_parent()) {
$f_style = $f->get_style();
$t = $f_style->length_in_pt($f_style->height);
if ($t != 0) {
break;
}
}
$height = ((float)rtrim($height,"%") * $t)/100; //maybe 0
} elseif ( !mb_strpos($height, 'pt') ) {
// Don't set image original size if "%" branch was 0 or size not given.
// Otherwise aspect changed on %/auto combination for width/height
// Resample according to px per inch
// See also List_Bullet_Image_Frame_Decorator::__construct
$height = $style->length_in_pt($height);
}
if ($width == 0 || $height == 0) {
// Determine the image's size. Time consuming. Only when really needed!
list($img_width, $img_height) = dompdf_getimagesize($this->_frame->get_image_url());
// don't treat 0 as error. Can be downscaled or can be catched elsewhere if image not readable.
// Resample according to px per inch
// See also List_Bullet_Image_Frame_Decorator::__construct
if ($width == 0 && $height == 0) {
$dpi = $this->_frame->get_dompdf()->get_option("dpi");
$width = (float)($img_width * 72) / $dpi;
$height = (float)($img_height * 72) / $dpi;
$width_forced = false;
$height_forced = false;
} elseif ($height == 0 && $width != 0) {
$height_forced = false;
$height = ($width / $img_width) * $img_height; //keep aspect ratio
} elseif ($width == 0 && $height != 0) {
$width_forced = false;
$width = ($height / $img_height) * $img_width; //keep aspect ratio
}
}
// Handle min/max width/height
if ( $style->min_width !== "none" ||
$style->max_width !== "none" ||
$style->min_height !== "none" ||
$style->max_height !== "none" ) {
list(/*$x*/, /*$y*/, $w, $h) = $this->_frame->get_containing_block();
$min_width = $style->length_in_pt($style->min_width, $w);
$max_width = $style->length_in_pt($style->max_width, $w);
$min_height = $style->length_in_pt($style->min_height, $h);
$max_height = $style->length_in_pt($style->max_height, $h);
if ( $max_width !== "none" && $width > $max_width ) {
if ( !$height_forced ) {
$height *= $max_width / $width;
}
$width = $max_width;
}
if ( $min_width !== "none" && $width < $min_width ) {
if ( !$height_forced ) {
$height *= $min_width / $width;
}
$width = $min_width;
}
if ( $max_height !== "none" && $height > $max_height ) {
if ( !$width_forced ) {
$width *= $max_height / $height;
}
$height = $max_height;
}
if ( $min_height !== "none" && $height < $min_height ) {
if ( !$width_forced ) {
$width *= $min_height / $height;
}
$height = $min_height;
}
}
if (DEBUGPNG) print $width.' '.$height.';';
$style->width = $width . "pt";
$style->height = $height . "pt";
$style->min_width = "none";
$style->max_width = "none";
$style->min_height = "none";
$style->max_height = "none";
return array( $width, $width, "min" => $width, "max" => $width);
}
}
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