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Edit File : Text.php \| Size : 5.40 KB
<?php /** * @package dompdf * @link http://dompdf.github.com/ * @author Benj Carson <benjcarson@digitaljunkies.ca> * @author Helmut Tischer <htischer@weihenstephan.org> * @author Fabien Ménager <fabien.menager@gmail.com> * @license http://www.gnu.org/copyleft/lesser.html GNU Lesser General Public License / namespace Dompdf\Renderer; use Dompdf\Adapter\CPDF; use Dompdf\Frame; /* * Renders text frames * * @package dompdf / class Text extends AbstractRenderer { /* Thickness of underline. Screen: 0.08, print: better less, e.g. 0.04 / const DECO_THICKNESS = 0.02; //Tweaking if $base and $descent are not accurate. //Check method_exists( $this->_canvas, "get_cpdf" ) //- For cpdf these can and must stay 0, because font metrics are used directly. //- For other renderers, if different values are wanted, separate the parameter sets. // But $size and $size-$height seem to be accurate enough /* Relative to bottom of text, as fraction of height / const UNDERLINE_OFFSET = 0.0; /* Relative to top of text / const OVERLINE_OFFSET = 0.0; /* Relative to centre of text. / const LINETHROUGH_OFFSET = 0.0; /* How far to extend lines past either end, in pt / const DECO_EXTENSION = 0.0; /* * @param \Dompdf\FrameDecorator\Text $frame / function render(Frame $frame) { $text = $frame->get_text(); if (trim($text) === "") { return; } $style = $frame->get_style(); list($x, $y) = $frame->get_position(); $cb = $frame->get_containing_block(); if (($ml = $style->margin_left) === "auto" \|\| $ml === "none") { $ml = 0; } if (($pl = $style->padding_left) === "auto" \|\| $pl === "none") { $pl = 0; } if (($bl = $style->border_left_width) === "auto" \|\| $bl === "none") { $bl = 0; } $x += (float)$style->length_in_pt([$ml, $pl, $bl], $cb["w"]); $font = $style->font_family; $size = $style->font_size; $frame_font_size = $frame->get_dompdf()->getFontMetrics()->getFontHeight($font, $size); $word_spacing = $frame->get_text_spacing() + (float)$style->length_in_pt($style->word_spacing); $char_spacing = (float)$style->length_in_pt($style->letter_spacing); $width = $style->width; /$text = str_replace( array("{PAGE_NUM}"), array($this->_canvas->get_page_number()), $text );/ $this->_canvas->text($x, $y, $text, $font, $size, $style->color, $word_spacing, $char_spacing); $line = $frame->get_containing_line(); // FIXME Instead of using the tallest frame to position, // the decoration, the text should be well placed if (false && $line->tallest_frame) { $base_frame = $line->tallest_frame; $style = $base_frame->get_style(); $size = $style->font_size; } $line_thickness = $size self::DECO_THICKNESS; $underline_offset = $size * self::UNDERLINE_OFFSET; $overline_offset = $size * self::OVERLINE_OFFSET; $linethrough_offset = $size * self::LINETHROUGH_OFFSET; $underline_position = -0.08; if ($this->_canvas instanceof CPDF) { $cpdf_font = $this->_canvas->get_cpdf()->fonts[$style->font_family]; if (isset($cpdf_font["UnderlinePosition"])) { $underline_position = $cpdf_font["UnderlinePosition"] / 1000; } if (isset($cpdf_font["UnderlineThickness"])) { $line_thickness = $size * ($cpdf_font["UnderlineThickness"] / 1000); } } $descent = $size * $underline_position; $base = $frame_font_size; // Handle text decoration: // http://www.w3.org/TR/CSS21/text.html#propdef-text-decoration // Draw all applicable text-decorations. Start with the root and work our way down. $p = $frame; $stack = []; while ($p = $p->get_parent()) { $stack[] = $p; } while (isset($stack[0])) { $f = array_pop($stack); if (($text_deco = $f->get_style()->text_decoration) === "none") { continue; } $deco_y = $y; //$line->y; $color = $f->get_style()->color; switch ($text_deco) { default: continue 2; case "underline": $deco_y += $base - $descent + $underline_offset + $line_thickness / 2; break; case "overline": $deco_y += $overline_offset + $line_thickness / 2; break; case "line-through": $deco_y += $base * 0.7 + $linethrough_offset; break; } $dx = 0; $x1 = $x - self::DECO_EXTENSION; $x2 = $x + $width + $dx + self::DECO_EXTENSION; $this->_canvas->line($x1, $deco_y, $x2, $deco_y, $color, $line_thickness); } if ($this->_dompdf->getOptions()->getDebugLayout() && $this->_dompdf->getOptions()->getDebugLayoutLines()) { $text_width = $this->_dompdf->getFontMetrics()->getTextWidth($text, $font, $size); $this->_debug_layout([$x, $y, $text_width + ($line->wc - 1) * $word_spacing, $frame_font_size], "orange", [0.5, 0.5]); } } } Back

Edit File : Text.php | Size : 5.40 KB

<?php
/**
 * @package dompdf
 * @link    http://dompdf.github.com/
 * @author  Benj Carson <benjcarson@digitaljunkies.ca>
 * @author  Helmut Tischer <htischer@weihenstephan.org>
 * @author  Fabien Ménager <fabien.menager@gmail.com>
 * @license http://www.gnu.org/copyleft/lesser.html GNU Lesser General Public License
 */
namespace Dompdf\Renderer;

use Dompdf\Adapter\CPDF;
use Dompdf\Frame;

/**
 * Renders text frames
 *
 * @package dompdf
 */
class Text extends AbstractRenderer
{
    /** Thickness of underline. Screen: 0.08, print: better less, e.g. 0.04 */
    const DECO_THICKNESS = 0.02;

//Tweaking if $base and $descent are not accurate.
    //Check method_exists( $this->_canvas, "get_cpdf" )
    //- For cpdf these can and must stay 0, because font metrics are used directly.
    //- For other renderers, if different values are wanted, separate the parameter sets.
    //  But $size and $size-$height seem to be accurate enough

/** Relative to bottom of text, as fraction of height */
    const UNDERLINE_OFFSET = 0.0;

/** Relative to top of text */
    const OVERLINE_OFFSET = 0.0;

/** Relative to centre of text. */
    const LINETHROUGH_OFFSET = 0.0;

/** How far to extend lines past either end, in pt */
    const DECO_EXTENSION = 0.0;

/**
     * @param \Dompdf\FrameDecorator\Text $frame
     */
    function render(Frame $frame)
    {
        $text = $frame->get_text();
        if (trim($text) === "") {
            return;
        }

$style = $frame->get_style();
        list($x, $y) = $frame->get_position();
        $cb = $frame->get_containing_block();

if (($ml = $style->margin_left) === "auto" || $ml === "none") {
            $ml = 0;
        }

if (($pl = $style->padding_left) === "auto" || $pl === "none") {
            $pl = 0;
        }

if (($bl = $style->border_left_width) === "auto" || $bl === "none") {
            $bl = 0;
        }

$x += (float)$style->length_in_pt([$ml, $pl, $bl], $cb["w"]);

$font = $style->font_family;
        $size = $style->font_size;
        $frame_font_size = $frame->get_dompdf()->getFontMetrics()->getFontHeight($font, $size);
        $word_spacing = $frame->get_text_spacing() + (float)$style->length_in_pt($style->word_spacing);
        $char_spacing = (float)$style->length_in_pt($style->letter_spacing);
        $width = $style->width;

/*$text = str_replace(
          array("{PAGE_NUM}"),
          array($this->_canvas->get_page_number()),
          $text
        );*/

$this->_canvas->text($x, $y, $text,
            $font, $size,
            $style->color, $word_spacing, $char_spacing);

$line = $frame->get_containing_line();

// FIXME Instead of using the tallest frame to position,
        // the decoration, the text should be well placed
        if (false && $line->tallest_frame) {
            $base_frame = $line->tallest_frame;
            $style = $base_frame->get_style();
            $size = $style->font_size;
        }

$line_thickness = $size * self::DECO_THICKNESS;
        $underline_offset = $size * self::UNDERLINE_OFFSET;
        $overline_offset = $size * self::OVERLINE_OFFSET;
        $linethrough_offset = $size * self::LINETHROUGH_OFFSET;
        $underline_position = -0.08;

if ($this->_canvas instanceof CPDF) {
            $cpdf_font = $this->_canvas->get_cpdf()->fonts[$style->font_family];

if (isset($cpdf_font["UnderlinePosition"])) {
                $underline_position = $cpdf_font["UnderlinePosition"] / 1000;
            }

if (isset($cpdf_font["UnderlineThickness"])) {
                $line_thickness = $size * ($cpdf_font["UnderlineThickness"] / 1000);
            }
        }

$descent = $size * $underline_position;
        $base = $frame_font_size;

// Handle text decoration:
        // http://www.w3.org/TR/CSS21/text.html#propdef-text-decoration

// Draw all applicable text-decorations.  Start with the root and work our way down.
        $p = $frame;
        $stack = [];
        while ($p = $p->get_parent()) {
            $stack[] = $p;
        }

while (isset($stack[0])) {
            $f = array_pop($stack);

if (($text_deco = $f->get_style()->text_decoration) === "none") {
                continue;
            }

$deco_y = $y; //$line->y;
            $color = $f->get_style()->color;

switch ($text_deco) {
                default:
                    continue 2;

case "underline":
                    $deco_y += $base - $descent + $underline_offset + $line_thickness / 2;
                    break;

case "overline":
                    $deco_y += $overline_offset + $line_thickness / 2;
                    break;

case "line-through":
                    $deco_y += $base * 0.7 + $linethrough_offset;
                    break;
            }

$dx = 0;
            $x1 = $x - self::DECO_EXTENSION;
            $x2 = $x + $width + $dx + self::DECO_EXTENSION;
            $this->_canvas->line($x1, $deco_y, $x2, $deco_y, $color, $line_thickness);
        }

if ($this->_dompdf->getOptions()->getDebugLayout() && $this->_dompdf->getOptions()->getDebugLayoutLines()) {
            $text_width = $this->_dompdf->getFontMetrics()->getTextWidth($text, $font, $size);
            $this->_debug_layout([$x, $y, $text_width + ($line->wc - 1) * $word_spacing, $frame_font_size], "orange", [0.5, 0.5]);
        }
    }
}

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