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Edit File : Renderer.php \| Size : 8.31 KB
<?php /** * @package dompdf * @link https://github.com/dompdf/dompdf * @license http://www.gnu.org/copyleft/lesser.html GNU Lesser General Public License / namespace Dompdf; use Dompdf\Renderer\AbstractRenderer; use Dompdf\Renderer\Block; use Dompdf\Renderer\Image; use Dompdf\Renderer\ListBullet; use Dompdf\Renderer\TableCell; use Dompdf\Renderer\TableRowGroup; use Dompdf\Renderer\Text; /* * Concrete renderer * * Instantiates several specific renderers in order to render any given frame. * * @package dompdf / class Renderer extends AbstractRenderer { /* * Array of renderers for specific frame types * * @var AbstractRenderer[] / protected $_renderers; /* * Cache of the callbacks array * * @var array / private $_callbacks; /* * Advance the canvas to the next page / function new_page() { $this->_canvas->new_page(); } /* * Render frames recursively * * @param Frame $frame the frame to render / public function render(Frame $frame) { global $_dompdf_debug; $this->_check_callbacks("begin_frame", $frame); if ($_dompdf_debug) { echo $frame; flush(); } $style = $frame->get_style(); if (in_array($style->visibility, ["hidden", "collapse"], true)) { return; } $display = $style->display; $transformList = $style->transform; $hasTransform = $transformList !== []; // Starts the CSS transformation if ($hasTransform) { $this->_canvas->save(); list($x, $y) = $frame->get_padding_box(); $origin = $style->transform_origin; foreach ($transformList as $transform) { list($function, $values) = $transform; if ($function === "matrix") { $function = "transform"; } $values = array_map("floatval", $values); $values[] = $x + (float)$style->length_in_pt($origin[0], (float)$style->length_in_pt($style->width)); $values[] = $y + (float)$style->length_in_pt($origin[1], (float)$style->length_in_pt($style->height)); call_user_func_array([$this->_canvas, $function], $values); } } switch ($display) { case "block": case "list-item": case "inline-block": case "table": case "inline-table": $this->_render_frame("block", $frame); break; case "inline": if ($frame->is_text_node()) { $this->_render_frame("text", $frame); } else { $this->_render_frame("inline", $frame); } break; case "table-cell": $this->_render_frame("table-cell", $frame); break; case "table-row-group": case "table-header-group": case "table-footer-group": $this->_render_frame("table-row-group", $frame); break; case "-dompdf-list-bullet": $this->_render_frame("list-bullet", $frame); break; case "-dompdf-image": $this->_render_frame("image", $frame); break; case "none": $node = $frame->get_node(); if ($node->nodeName === "script") { if ($node->getAttribute("type") === "text/php" \|\| $node->getAttribute("language") === "php" ) { // Evaluate embedded php scripts $this->_render_frame("php", $frame); } elseif ($node->getAttribute("type") === "text/javascript" \|\| $node->getAttribute("language") === "javascript" ) { // Insert JavaScript $this->_render_frame("javascript", $frame); } } // Don't render children, so skip to next iter return; default: break; } // Starts the overflow: hidden box if ($style->overflow === "hidden") { $padding_box = $frame->get_padding_box(); [$x, $y, $w, $h] = $padding_box; $style = $frame->get_style(); if ($style->has_border_radius()) { $border_box = $frame->get_border_box(); [$tl, $tr, $br, $bl] = $style->resolve_border_radius($border_box, $padding_box); $this->_canvas->clipping_roundrectangle($x, $y, $w, $h, $tl, $tr, $br, $bl); } else { $this->_canvas->clipping_rectangle($x, $y, $w, $h); } } $stack = []; foreach ($frame->get_children() as $child) { // < 0 : negative z-index // = 0 : no z-index, no stacking context // = 1 : stacking context without z-index // > 1 : z-index $child_style = $child->get_style(); $child_z_index = $child_style->z_index; $z_index = 0; if ($child_z_index !== "auto") { $z_index = $child_z_index + 1; } elseif ($child_style->float !== "none" \|\| $child->is_positioned()) { $z_index = 1; } $stack[$z_index][] = $child; } ksort($stack); foreach ($stack as $by_index) { foreach ($by_index as $child) { $this->render($child); } } // Ends the overflow: hidden box if ($style->overflow === "hidden") { $this->_canvas->clipping_end(); } if ($hasTransform) { $this->_canvas->restore(); } // Check for end frame callback $this->_check_callbacks("end_frame", $frame); } /* * Check for callbacks that need to be performed when a given event * gets triggered on a frame * * @param string $event The type of event * @param Frame $frame The frame that event is triggered on / protected function _check_callbacks(string $event, Frame $frame): void { if (!isset($this->_callbacks)) { $this->_callbacks = $this->_dompdf->getCallbacks(); } if (isset($this->_callbacks[$event])) { $fs = $this->_callbacks[$event]; $canvas = $this->_canvas; $fontMetrics = $this->_dompdf->getFontMetrics(); foreach ($fs as $f) { $f($frame, $canvas, $fontMetrics); } } } /* * Render a single frame * * Creates Renderer objects on demand * * @param string $type type of renderer to use * @param Frame $frame the frame to render */ protected function _render_frame($type, $frame) { if (!isset($this->_renderers[$type])) { switch ($type) { case "block": $this->_renderers[$type] = new Block($this->_dompdf); break; case "inline": $this->_renderers[$type] = new Renderer\Inline($this->_dompdf); break; case "text": $this->_renderers[$type] = new Text($this->_dompdf); break; case "image": $this->_renderers[$type] = new Image($this->_dompdf); break; case "table-cell": $this->_renderers[$type] = new TableCell($this->_dompdf); break; case "table-row-group": $this->_renderers[$type] = new TableRowGroup($this->_dompdf); break; case "list-bullet": $this->_renderers[$type] = new ListBullet($this->_dompdf); break; case "php": $this->_renderers[$type] = new PhpEvaluator($this->_canvas); break; case "javascript": $this->_renderers[$type] = new JavascriptEmbedder($this->_dompdf); break; } } $this->_renderers[$type]->render($frame); } } Back

Edit File : Renderer.php | Size : 8.31 KB

<?php
/**
 * @package dompdf
 * @link    https://github.com/dompdf/dompdf
 * @license http://www.gnu.org/copyleft/lesser.html GNU Lesser General Public License
 */
namespace Dompdf;

use Dompdf\Renderer\AbstractRenderer;
use Dompdf\Renderer\Block;
use Dompdf\Renderer\Image;
use Dompdf\Renderer\ListBullet;
use Dompdf\Renderer\TableCell;
use Dompdf\Renderer\TableRowGroup;
use Dompdf\Renderer\Text;

/**
 * Concrete renderer
 *
 * Instantiates several specific renderers in order to render any given frame.
 *
 * @package dompdf
 */
class Renderer extends AbstractRenderer
{

/**
     * Array of renderers for specific frame types
     *
     * @var AbstractRenderer[]
     */
    protected $_renderers;

/**
     * Cache of the callbacks array
     *
     * @var array
     */
    private $_callbacks;

/**
     * Advance the canvas to the next page
     */
    function new_page()
    {
        $this->_canvas->new_page();
    }

/**
     * Render frames recursively
     *
     * @param Frame $frame the frame to render
     */
    public function render(Frame $frame)
    {
        global $_dompdf_debug;

$this->_check_callbacks("begin_frame", $frame);

if ($_dompdf_debug) {
            echo $frame;
            flush();
        }

$style = $frame->get_style();

if (in_array($style->visibility, ["hidden", "collapse"], true)) {
            return;
        }

$display = $style->display;
        $transformList = $style->transform;
        $hasTransform = $transformList !== [];

// Starts the CSS transformation
        if ($hasTransform) {
            $this->_canvas->save();
            list($x, $y) = $frame->get_padding_box();
            $origin = $style->transform_origin;

foreach ($transformList as $transform) {
                list($function, $values) = $transform;
                if ($function === "matrix") {
                    $function = "transform";
                }

$values = array_map("floatval", $values);
                $values[] = $x + (float)$style->length_in_pt($origin[0], (float)$style->length_in_pt($style->width));
                $values[] = $y + (float)$style->length_in_pt($origin[1], (float)$style->length_in_pt($style->height));

call_user_func_array([$this->_canvas, $function], $values);
            }
        }

switch ($display) {

case "block":
            case "list-item":
            case "inline-block":
            case "table":
            case "inline-table":
                $this->_render_frame("block", $frame);
                break;

case "inline":
                if ($frame->is_text_node()) {
                    $this->_render_frame("text", $frame);
                } else {
                    $this->_render_frame("inline", $frame);
                }
                break;

case "table-cell":
                $this->_render_frame("table-cell", $frame);
                break;

case "table-row-group":
            case "table-header-group":
            case "table-footer-group":
                $this->_render_frame("table-row-group", $frame);
                break;

case "-dompdf-list-bullet":
                $this->_render_frame("list-bullet", $frame);
                break;

case "-dompdf-image":
                $this->_render_frame("image", $frame);
                break;

case "none":
                $node = $frame->get_node();

if ($node->nodeName === "script") {
                    if ($node->getAttribute("type") === "text/php" ||
                        $node->getAttribute("language") === "php"
                    ) {
                        // Evaluate embedded php scripts
                        $this->_render_frame("php", $frame);
                    } elseif ($node->getAttribute("type") === "text/javascript" ||
                        $node->getAttribute("language") === "javascript"
                    ) {
                        // Insert JavaScript
                        $this->_render_frame("javascript", $frame);
                    }
                }

// Don't render children, so skip to next iter
                return;

default:
                break;

}

// Starts the overflow: hidden box
        if ($style->overflow === "hidden") {
            $padding_box = $frame->get_padding_box();
            [$x, $y, $w, $h] = $padding_box;
            $style = $frame->get_style();

if ($style->has_border_radius()) {
                $border_box = $frame->get_border_box();
                [$tl, $tr, $br, $bl] = $style->resolve_border_radius($border_box, $padding_box);
                $this->_canvas->clipping_roundrectangle($x, $y, $w, $h, $tl, $tr, $br, $bl);
            } else {
                $this->_canvas->clipping_rectangle($x, $y, $w, $h);
            }
        }

$stack = [];

foreach ($frame->get_children() as $child) {
            // < 0 : negative z-index
            // = 0 : no z-index, no stacking context
            // = 1 : stacking context without z-index
            // > 1 : z-index
            $child_style = $child->get_style();
            $child_z_index = $child_style->z_index;
            $z_index = 0;

if ($child_z_index !== "auto") {
                $z_index = $child_z_index + 1;
            } elseif ($child_style->float !== "none" || $child->is_positioned()) {
                $z_index = 1;
            }

$stack[$z_index][] = $child;
        }

ksort($stack);

foreach ($stack as $by_index) {
            foreach ($by_index as $child) {
                $this->render($child);
            }
        }

// Ends the overflow: hidden box
        if ($style->overflow === "hidden") {
            $this->_canvas->clipping_end();
        }

if ($hasTransform) {
            $this->_canvas->restore();
        }

// Check for end frame callback
        $this->_check_callbacks("end_frame", $frame);
    }

/**
     * Check for callbacks that need to be performed when a given event
     * gets triggered on a frame
     *
     * @param string $event The type of event
     * @param Frame  $frame The frame that event is triggered on
     */
    protected function _check_callbacks(string $event, Frame $frame): void
    {
        if (!isset($this->_callbacks)) {
            $this->_callbacks = $this->_dompdf->getCallbacks();
        }

if (isset($this->_callbacks[$event])) {
            $fs = $this->_callbacks[$event];
            $canvas = $this->_canvas;
            $fontMetrics = $this->_dompdf->getFontMetrics();

foreach ($fs as $f) {
                $f($frame, $canvas, $fontMetrics);
            }
        }
    }

/**
     * Render a single frame
     *
     * Creates Renderer objects on demand
     *
     * @param string $type type of renderer to use
     * @param Frame $frame the frame to render
     */
    protected function _render_frame($type, $frame)
    {

if (!isset($this->_renderers[$type])) {

switch ($type) {
                case "block":
                    $this->_renderers[$type] = new Block($this->_dompdf);
                    break;

case "inline":
                    $this->_renderers[$type] = new Renderer\Inline($this->_dompdf);
                    break;

case "text":
                    $this->_renderers[$type] = new Text($this->_dompdf);
                    break;

case "image":
                    $this->_renderers[$type] = new Image($this->_dompdf);
                    break;

case "table-cell":
                    $this->_renderers[$type] = new TableCell($this->_dompdf);
                    break;

case "table-row-group":
                    $this->_renderers[$type] = new TableRowGroup($this->_dompdf);
                    break;

case "list-bullet":
                    $this->_renderers[$type] = new ListBullet($this->_dompdf);
                    break;

case "php":
                    $this->_renderers[$type] = new PhpEvaluator($this->_canvas);
                    break;

case "javascript":
                    $this->_renderers[$type] = new JavascriptEmbedder($this->_dompdf);
                    break;

}
        }

$this->_renderers[$type]->render($frame);
    }
}

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