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

use Dompdf\Dompdf;
use Dompdf\Frame;
use Dompdf\Exception;

/**
 * Decorates Frame objects for text layout
 *
 * @package dompdf
 */
class Text extends AbstractFrameDecorator
{
    /**
     * @var float
     */
    protected $text_spacing;

/**
     * @var string|null
     */
    protected $mapped_font;

/**
     * Text constructor.
     * @param Frame $frame
     * @param Dompdf $dompdf
     * @throws Exception
     */
    function __construct(Frame $frame, Dompdf $dompdf)
    {
        if (!$frame->is_text_node()) {
            throw new Exception("Text_Decorator can only be applied to #text nodes.");
        }

parent::__construct($frame, $dompdf);
        $this->text_spacing = 0.0;
    }

function reset()
    {
        parent::reset();
        $this->text_spacing = 0.0;
        $this->mapped_font = null;
    }

// Accessor methods

/**
     * @return float
     */
    public function get_text_spacing(): float
    {
        return $this->text_spacing;
    }

/**
     * @return string
     */
    function get_text()
    {
        // FIXME: this should be in a child class (and is incorrect)
//    if ( $this->_frame->get_style()->content !== "normal" ) {
//      $this->_frame->get_node()->data = $this->_frame->get_style()->content;
//      $this->_frame->get_style()->content = "normal";
//    }

//      Helpers::pre_r("---");
//      $style = $this->_frame->get_style();
//      var_dump($text = $this->_frame->get_node()->data);
//      var_dump($asc = utf8_decode($text));
//      for ($i = 0; $i < strlen($asc); $i++)
//        Helpers::pre_r("$i: " . $asc[$i] . " - " . ord($asc[$i]));
//      Helpers::pre_r("width: " . $this->_dompdf->getFontMetrics()->getTextWidth($text, $style->font_family, $style->font_size));

return $this->_frame->get_node()->data;
    }

//........................................................................

/**
     * Vertical padding, border, and margin do not apply when determining the
     * height for inline frames.
     *
     * http://www.w3.org/TR/CSS21/visudet.html#inline-non-replaced
     *
     * The vertical padding, border and margin of an inline, non-replaced box
     * start at the top and bottom of the content area, not the
     * 'line-height'. But only the 'line-height' is used to calculate the
     * height of the line box.
     *
     * @return float
     */
    public function get_margin_height(): float
    {
        // This function is also called in add_frame_to_line() and is used to
        // determine the line height
        $style = $this->get_style();
        $font = $style->font_family;
        $size = $style->font_size;
        $fontHeight = $this->_dompdf->getFontMetrics()->getFontHeight($font, $size);

return ($style->line_height / ($size > 0 ? $size : 1)) * $fontHeight;
    }

public function get_padding_box(): array
    {
        $style = $this->_frame->get_style();
        $pb = $this->_frame->get_padding_box();
        $pb[3] = $pb["h"] = (float) $style->length_in_pt($style->height);
        return $pb;
    }

/**
     * @param float $spacing
     */
    public function set_text_spacing(float $spacing): void
    {
        $this->text_spacing = $spacing;
        $this->recalculate_width();
    }

/**
     * Recalculate the text width
     *
     * @return float
     */
    public function recalculate_width(): float
    {
        $fontMetrics = $this->_dompdf->getFontMetrics();
        $style = $this->get_style();
        $text = $this->get_text();
        $font = $style->font_family;
        $size = $style->font_size;
        $word_spacing = $this->text_spacing + $style->word_spacing;
        $letter_spacing = $style->letter_spacing;
        $text_width = $fontMetrics->getTextWidth($text, $font, $size, $word_spacing, $letter_spacing);

$style->set_used("width", $text_width);
        return $text_width;
    }

// Text manipulation methods

/**
     * Split the text in this frame at the offset specified.  The remaining
     * text is added as a sibling frame following this one and is returned.
     *
     * @param int  $offset
     * @param bool $split_parent Whether to split parent inline frames.
     *
     * @return Text|null
     */
    function split_text(int $offset, bool $split_parent = true): ?self
    {
        if ($offset === 0) {
            return null;
        }

$split = $this->_frame->get_node()->splitText($offset);
        if ($split === false) {
            return null;
        }

/** @var Text */
        $deco = $this->copy($split);
        $style = $this->_frame->get_style();
        $split_style = $deco->get_style();

if ($this->mapped_font !== null) {
            $split_style->set_used("font_family", $this->mapped_font);
            $deco->mapped_font = $this->mapped_font;
        }

// Clear decoration widths at the split point. They might have been
        // copied from the parent frame during inline reflow
        $style->margin_right = 0.0;
        $style->padding_right = 0.0;
        $style->border_right_width = 0.0;

$split_style->margin_left = 0.0;
        $split_style->padding_left = 0.0;
        $split_style->border_left_width = 0.0;

$p = $this->get_parent();
        $p->insert_child_after($deco, $this, false);

if ($split_parent && $p instanceof Inline) {
            $p->split($deco);
        }

return $deco;
    }

/**
     * @param int $offset
     * @param int $count
     */
    function delete_text($offset, $count)
    {
        $this->_frame->get_node()->deleteData($offset, $count);
    }

/**
     * @param string $text
     */
    function set_text($text)
    {
        $this->_frame->get_node()->data = $text;
    }

/**
     * Determines the optimal font that applies to the frame and splits
     * the frame where the optimal font changes.
     */
    function apply_font_mapping(): void
    {
        if ($this->mapped_font !== null) {
            return;
        }

$fontMetrics = $this->_dompdf->getFontMetrics();
        $style = $this->get_style();
        $families = $style->get_font_family_computed();
        $subtype = $fontMetrics->getType($style->font_weight . ' ' . $style->font_style);
        $charMapping = $fontMetrics->mapTextToFonts($this->get_text(), $families, $subtype, 1);

if (isset($charMapping[0])) {
            if ($charMapping[0]["length"] !== 0) {
                $this->split_text($charMapping[0]["length"], false);
            }
            $mapped_font = $charMapping[0]["font"];
            if ($mapped_font !== null) {
                $style->set_used("font_family", $mapped_font);
                $this->mapped_font = $mapped_font;
            }
        }
    }
}

Batal

⬅ Naik ke src 13 item

Nama	Tipe	Ukuran	Diubah	Aksi
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🐘TableRowGroup.php	php	2 KB	2025-10-25 15:30	✏️ Edit 👁️ View
🐘Text.php	php	6.8 KB	2025-10-25 15:30	✏️ Edit 👁️ View