class TextOverlay in Image Effects 8

Same name and namespace in other branches

8.3 src/Plugin/ImageToolkit/Operation/gd/TextOverlay.php \Drupal\image_effects\Plugin\ImageToolkit\Operation\gd\TextOverlay
8.2 src/Plugin/ImageToolkit/Operation/gd/TextOverlay.php \Drupal\image_effects\Plugin\ImageToolkit\Operation\gd\TextOverlay

Defines GD2 text overlay operation.

Plugin annotation


@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.")
)

Hierarchy

class \Drupal\Component\Plugin\PluginBase implements DerivativeInspectionInterface, PluginInspectionInterface
- class \Drupal\Core\Plugin\PluginBase uses DependencySerializationTrait, MessengerTrait, StringTranslationTrait
  - class \Drupal\Core\ImageToolkit\ImageToolkitOperationBase implements ImageToolkitOperationInterface
    class \Drupal\system\Plugin\ImageToolkit\Operation\gd\GDImageToolkitOperationBase
    class \Drupal\image_effects\Plugin\ImageToolkit\Operation\gd\TextOverlay uses FontOperationTrait, GDOperationTrait, TextOverlayTrait

Expanded class hierarchy of TextOverlay

File

src/Plugin/ImageToolkit/Operation/gd/TextOverlay.php, line 20

Namespace

Drupal\image_effects\Plugin\ImageToolkit\Operation\gd

View source

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;
  }

}

Members

Name	Modifiers	Type	Description	Overrides
DependencySerializationTrait::$_entityStorages	protected	property	An array of entity type IDs keyed by the property name of their storages.
DependencySerializationTrait::$_serviceIds	protected	property	An array of service IDs keyed by property name used for serialization.
DependencySerializationTrait::__sleep	public	function		1
DependencySerializationTrait::__wakeup	public	function		2
FontOperationTrait::$fontPaths	protected static	property	An array of resolved font file URIs.
FontOperationTrait::$streamWrapperManagerForFontHandling	protected	property	The stream wrapper manager service.
FontOperationTrait::getFontPath	protected	function	Return the path of the font file.
FontOperationTrait::getRealFontPath	protected	function	Return the real path of the specified file.
FontOperationTrait::getStreamWrapperManagerForFontHandling	protected	function	Returns the stream wrapper manager service.
GDImageToolkitOperationBase::getToolkit	protected	function	The correctly typed image toolkit for GD operations. Overrides ImageToolkitOperationBase::getToolkit
GDOperationTrait::allocateColorFromRgba	protected	function	Allocates a GD color from an RGBA hexadecimal.
GDOperationTrait::filterOpacity	protected	function	Change overall image transparency level.
GDOperationTrait::getAreaEntropy	protected	function	Computes the entropy of the area of an image.
GDOperationTrait::getEntropyCropByGridding	protected	function	Computes the entropy crop of an image, using recursive gridding.
GDOperationTrait::getEntropyCropBySlicing	protected	function	Computes the entropy crop of an image, using slices.
GDOperationTrait::getRectangleCorners	protected	function	Convert a rectangle to a sequence of point coordinates.
GDOperationTrait::hexToRgba	protected	function	Convert a RGBA hex to its RGBA integer GD components.
GDOperationTrait::imageCopyGaussianBlurred	protected	function	Gets a copy of the source with the Gaussian Blur algorithm applied.
GDOperationTrait::imageCopyMergeAlpha	protected	function	Copy and merge part of an image, preserving alpha.
GDOperationTrait::imagettfbboxWrapper	protected	function	Wrapper of imagettfbbox().
GDOperationTrait::imagettftextWrapper	protected	function	Wrapper of imagettftext().
ImageToolkitOperationBase::$logger	protected	property	A logger instance.
ImageToolkitOperationBase::$toolkit	protected	property	The image toolkit.
ImageToolkitOperationBase::apply	final public	function	Applies a toolkit specific operation to an image. Overrides ImageToolkitOperationInterface::apply
ImageToolkitOperationBase::prepareArguments	protected	function	Checks if required arguments are passed in and adds defaults for non passed in optional arguments.
ImageToolkitOperationBase::__construct	public	function	Constructs an image toolkit operation plugin. Overrides PluginBase::__construct
MessengerTrait::$messenger	protected	property	The messenger.	29
MessengerTrait::messenger	public	function	Gets the messenger.	29
MessengerTrait::setMessenger	public	function	Sets the messenger.
PluginBase::$configuration	protected	property	Configuration information passed into the plugin.	1
PluginBase::$pluginDefinition	protected	property	The plugin implementation definition.	1
PluginBase::$pluginId	protected	property	The plugin_id.
PluginBase::DERIVATIVE_SEPARATOR		constant	A string which is used to separate base plugin IDs from the derivative ID.
PluginBase::getBaseId	public	function	Gets the base_plugin_id of the plugin instance. Overrides DerivativeInspectionInterface::getBaseId
PluginBase::getDerivativeId	public	function	Gets the derivative_id of the plugin instance. Overrides DerivativeInspectionInterface::getDerivativeId
PluginBase::getPluginDefinition	public	function	Gets the definition of the plugin implementation. Overrides PluginInspectionInterface::getPluginDefinition	3
PluginBase::getPluginId	public	function	Gets the plugin_id of the plugin instance. Overrides PluginInspectionInterface::getPluginId
PluginBase::isConfigurable	public	function	Determines if the plugin is configurable.
StringTranslationTrait::$stringTranslation	protected	property	The string translation service.	1
StringTranslationTrait::formatPlural	protected	function	Formats a string containing a count of items.
StringTranslationTrait::getNumberOfPlurals	protected	function	Returns the number of plurals supported by a given language.
StringTranslationTrait::getStringTranslation	protected	function	Gets the string translation service.
StringTranslationTrait::setStringTranslation	public	function	Sets the string translation service to use.	2
StringTranslationTrait::t	protected	function	Translates a string to the current language or to a given language.
TextOverlay::execute	protected	function	Performs the actual manipulation on the image. Overrides ImageToolkitOperationBase::execute
TextOverlayTrait::arguments	protected	function
TextOverlayTrait::validateArguments	protected	function

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class TextOverlay in Image Effects 8

Plugin annotation

Hierarchy

File

Namespace

Members

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