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Current File : /srv/wp/ciieduconnect.in/www/core/lib/Drupal/Core/Image/ImageInterface.php
<?php

namespace Drupal\Core\Image;

/**
 * Provides an interface for image objects.
 */
interface ImageInterface {

  /**
   * Checks if the image is valid.
   *
   * @return bool
   *   TRUE if the image object contains a valid image, FALSE otherwise.
   */
  public function isValid();

  /**
   * Returns the height of the image.
   *
   * @return int|null
   *   The height of the image, or NULL if the image is invalid.
   */
  public function getHeight();

  /**
   * Returns the width of the image.
   *
   * @return int|null
   *   The width of the image, or NULL if the image is invalid.
   */
  public function getWidth();

  /**
   * Returns the size of the image file.
   *
   * @return int|null
   *   The size of the file in bytes, or NULL if the image is invalid.
   */
  public function getFileSize();

  /**
   * Returns the MIME type of the image file.
   *
   * @return string
   *   The MIME type of the image file, or an empty string if the image is
   *   invalid.
   */
  public function getMimeType();

  /**
   * Retrieves the source path of the image file.
   *
   * @return string
   *   The source path of the image file. An empty string if the source is
   *   not set.
   */
  public function getSource();

  /**
   * Returns the image toolkit used for this image file.
   *
   * @return \Drupal\Core\ImageToolkit\ImageToolkitInterface
   *   The image toolkit.
   */
  public function getToolkit();

  /**
   * Returns the ID of the image toolkit used for this image file.
   *
   * @return string
   *   The ID of the image toolkit.
   */
  public function getToolkitId();

  /**
   * Applies a toolkit operation to the image.
   *
   * The operation is deferred to the active toolkit.
   *
   * @param string $operation
   *   The operation to be performed against the image.
   * @param array $arguments
   *   (optional) An associative array of arguments to be passed to the toolkit
   *   operation; for instance,
   *   @code
   *     ['width' => 50, 'height' => 100, 'upscale' => TRUE]
   *   @endcode
   *   Defaults to an empty array.
   *
   * @return bool
   *   TRUE on success, FALSE on failure.
   */
  public function apply($operation, array $arguments = []);

  /**
   * Closes the image and saves the changes to a file.
   *
   * @param string|null $destination
   *   (optional) Destination path where the image should be saved. If it is empty
   *   the original image file will be overwritten.
   *
   * @return bool
   *   TRUE on success, FALSE on failure.
   *
   * @see \Drupal\Core\ImageToolkit\ImageToolkitInterface::save()
   */
  public function save($destination = NULL);

  /**
   * Prepares a new image, without loading it from a file.
   *
   * For a working example, see
   * \Drupal\system\Plugin\ImageToolkit\Operation\gd\CreateNew.
   *
   * @param int $width
   *   The width of the new image, in pixels.
   * @param int $height
   *   The height of the new image, in pixels.
   * @param string $extension
   *   (optional) The extension of the image file (for instance, 'png', 'gif',
   *   etc.). Allowed values depend on the implementation of the image toolkit.
   *   Defaults to 'png'.
   * @param string $transparent_color
   *   (optional) The hexadecimal string representing the color to be used
   *   for transparency, needed for GIF images. Defaults to '#ffffff' (white).
   *
   * @return bool
   *   TRUE on success, FALSE on failure.
   */
  public function createNew($width, $height, $extension = 'png', $transparent_color = '#ffffff');

  /**
   * Scales an image while maintaining aspect ratio.
   *
   * The resulting image can be smaller for one or both target dimensions.
   *
   * @param int|null $width
   *   The target width, in pixels. If this value is null then the scaling will
   *   be based only on the height value.
   * @param int|null $height
   *   (optional) The target height, in pixels. If this value is null then the
   *   scaling will be based only on the width value.
   * @param bool $upscale
   *   (optional) Boolean indicating that files smaller than the dimensions will
   *   be scaled up. This generally results in a low quality image.
   *
   * @return bool
   *   TRUE on success, FALSE on failure.
   */
  public function scale($width, $height = NULL, $upscale = FALSE);

  /**
   * Scales an image to the exact width and height given.
   *
   * This function achieves the target aspect ratio by cropping the original
   * image equally on both sides, or equally on the top and bottom. This
   * function is useful to create uniform sized avatars from larger images.
   *
   * The resulting image always has the exact target dimensions.
   *
   * @param int $width
   *   The target width, in pixels.
   * @param int $height
   *   The target height, in pixels.
   *
   * @return bool
   *   TRUE on success, FALSE on failure.
   */
  public function scaleAndCrop($width, $height);

  /**
   * Instructs the toolkit to save the image in the format specified by the
   * extension.
   *
   * @param string $extension
   *   The extension to convert to (for instance, 'jpeg' or 'png'). Allowed
   *   values depend on the current image toolkit.
   *
   * @return bool
   *   TRUE on success, FALSE on failure.
   *
   * @see \Drupal\Core\ImageToolkit\ImageToolkitInterface::getSupportedExtensions()
   */
  public function convert($extension);

  /**
   * Crops an image to a rectangle specified by the given dimensions.
   *
   * @param int $x
   *   The top left coordinate, in pixels, of the crop area (x axis value).
   * @param int $y
   *   The top left coordinate, in pixels, of the crop area (y axis value).
   * @param int $width
   *   The target width, in pixels.
   * @param int $height
   *   The target height, in pixels.
   *
   * @return bool
   *   TRUE on success, FALSE on failure.
   */
  public function crop($x, $y, $width, $height = NULL);

  /**
   * Resizes an image to the given dimensions (ignoring aspect ratio).
   *
   * @param int $width
   *   The target width, in pixels.
   * @param int $height
   *   The target height, in pixels.
   *
   * @return bool
   *   TRUE on success, FALSE on failure.
   */
  public function resize($width, $height);

  /**
   * Converts an image to grayscale.
   *
   * @return bool
   *   TRUE on success, FALSE on failure.
   */
  public function desaturate();

  /**
   * Rotates an image by the given number of degrees.
   *
   * @param float $degrees
   *   The number of (clockwise) degrees to rotate the image.
   * @param string|null $background
   *   (optional) A hexadecimal integer specifying the background color to use
   *   for the uncovered area of the image after the rotation; for example,
   *   0x000000 for black, 0xff00ff for magenta, and 0xffffff for white. When
   *   NULL (the default) is specified, for images that support transparency,
   *   this will default to transparent; otherwise, it will default to white.
   *
   * @return bool
   *   TRUE on success, FALSE on failure.
   */
  public function rotate($degrees, $background = NULL);

}

Youez - 2016 - github.com/yon3zu
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