TextOverlay.php in Image Effects 8

Namespace

Drupal\image_effects\Plugin\ImageToolkit\Operation\gd

File

src/Plugin/ImageToolkit/Operation/gd/TextOverlay.php

<?php

namespace Drupal\image_effects\Plugin\ImageToolkit\Operation\gd;

use Drupal\system\Plugin\ImageToolkit\Operation\gd\GDImageToolkitOperationBase;
use Drupal\image_effects\Plugin\ImageToolkit\Operation\FontOperationTrait;
use Drupal\image_effects\Plugin\ImageToolkit\Operation\TextOverlayTrait;

/**
 * Defines GD2 text overlay operation.
 *
 * @ImageToolkitOperation(
 *   id = "image_effects_gd_text_overlay",
 *   toolkit = "gd",
 *   operation = "text_overlay",
 *   label = @Translation("Text overlay"),
 *   description = @Translation("Overlays a given text into the image.")
 * )
 */
class TextOverlay extends GDImageToolkitOperationBase {
  use FontOperationTrait;
  use TextOverlayTrait;
  use GDOperationTrait;

  /**
   * {@inheritdoc}
   */
  protected function execute(array $arguments) {
    $font_file = $this
      ->getFontPath($arguments['font_uri']);

    // Overlays the text outline/shadow, if required.
    // Credit to John Ciacia.
    // @see http://www.johnciacia.com/2010/01/04/using-php-and-gd-to-add-border-to-text/
    $outline = $shadow = FALSE;
    if ($arguments['font_stroke_mode'] == 'outline' && ($arguments['font_outline_top'] || $arguments['font_outline_right'] || $arguments['font_outline_bottom'] || $arguments['font_outline_left']) && $arguments['font_stroke_color']) {
      $outline = TRUE;
    }
    elseif ($arguments['font_stroke_mode'] == 'shadow' && ($arguments['font_shadow_x_offset'] || $arguments['font_shadow_y_offset'] || $arguments['font_shadow_width'] || $arguments['font_shadow_height']) && $arguments['font_stroke_color']) {
      $shadow = TRUE;
    }
    if ($outline || $shadow) {
      $stroke_color = $this
        ->allocateColorFromRgba($arguments['font_stroke_color']);
      if ($outline) {
        $stroke_x_pos = $arguments['basepoint'][0];
        $stroke_y_pos = $arguments['basepoint'][1];
        $stroke_top = $arguments['font_outline_top'];
        $stroke_right = $arguments['font_outline_right'];
        $stroke_bottom = $arguments['font_outline_bottom'];
        $stroke_left = $arguments['font_outline_left'];
      }
      elseif ($shadow) {
        $stroke_x_pos = $arguments['basepoint'][0] + $arguments['font_shadow_x_offset'];
        $stroke_y_pos = $arguments['basepoint'][1] + $arguments['font_shadow_y_offset'];
        $stroke_top = 0;
        $stroke_right = $arguments['font_shadow_width'];
        $stroke_bottom = $arguments['font_shadow_height'];
        $stroke_left = 0;
      }
      for ($c1 = $stroke_x_pos - abs($stroke_left); $c1 <= $stroke_x_pos + abs($stroke_right); $c1++) {
        for ($c2 = $stroke_y_pos - abs($stroke_top); $c2 <= $stroke_y_pos + abs($stroke_bottom); $c2++) {
          $bg = $this
            ->imagettftextWrapper($this
            ->getToolkit()
            ->getResource(), $arguments['font_size'], -$arguments['font_angle'], $c1, $c2, $stroke_color, $font_file, $arguments['text']);
          if ($bg == FALSE) {
            return FALSE;
          }
        }
      }
    }

    // Overlays the text.
    $this
      ->imagettftextWrapper($this
      ->getToolkit()
      ->getResource(), $arguments['font_size'], -$arguments['font_angle'], $arguments['basepoint'][0], $arguments['basepoint'][1], $this
      ->allocateColorFromRgba($arguments['font_color']), $font_file, $arguments['text']);
    return TRUE;
  }

}

Classes

Name	Description
TextOverlay	Defines GD2 text overlay operation.