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1 <?php
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2
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3 namespace Drupal\image\Plugin\ImageEffect;
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4
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5 use Drupal\Component\Utility\Color;
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6 use Drupal\Component\Utility\Rectangle;
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7 use Drupal\Core\Form\FormStateInterface;
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8 use Drupal\Core\Image\ImageInterface;
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9 use Drupal\image\ConfigurableImageEffectBase;
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10
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11 /**
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12 * Rotates an image resource.
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13 *
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14 * @ImageEffect(
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15 * id = "image_rotate",
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16 * label = @Translation("Rotate"),
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17 * description = @Translation("Rotating an image may cause the dimensions of an image to increase to fit the diagonal.")
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18 * )
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19 */
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20 class RotateImageEffect extends ConfigurableImageEffectBase {
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21
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22 /**
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23 * {@inheritdoc}
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24 */
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25 public function applyEffect(ImageInterface $image) {
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26 if (!empty($this->configuration['random'])) {
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27 $degrees = abs((float) $this->configuration['degrees']);
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28 $this->configuration['degrees'] = rand(-$degrees, $degrees);
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29 }
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30
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31 if (!$image->rotate($this->configuration['degrees'], $this->configuration['bgcolor'])) {
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32 $this->logger->error('Image rotate failed using the %toolkit toolkit on %path (%mimetype, %dimensions)', ['%toolkit' => $image->getToolkitId(), '%path' => $image->getSource(), '%mimetype' => $image->getMimeType(), '%dimensions' => $image->getWidth() . 'x' . $image->getHeight()]);
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33 return FALSE;
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34 }
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35 return TRUE;
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36 }
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37
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38 /**
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39 * {@inheritdoc}
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40 */
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41 public function transformDimensions(array &$dimensions, $uri) {
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42 // If the rotate is not random and current dimensions are set,
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43 // then the new dimensions can be determined.
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44 if (!$this->configuration['random'] && $dimensions['width'] && $dimensions['height']) {
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45 $rect = new Rectangle($dimensions['width'], $dimensions['height']);
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46 $rect = $rect->rotate($this->configuration['degrees']);
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47 $dimensions['width'] = $rect->getBoundingWidth();
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48 $dimensions['height'] = $rect->getBoundingHeight();
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49 }
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50 else {
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51 $dimensions['width'] = $dimensions['height'] = NULL;
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52 }
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53 }
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54
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55 /**
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56 * {@inheritdoc}
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57 */
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58 public function getSummary() {
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59 $summary = [
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60 '#theme' => 'image_rotate_summary',
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61 '#data' => $this->configuration,
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62 ];
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63 $summary += parent::getSummary();
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64
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65 return $summary;
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66 }
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67
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68 /**
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69 * {@inheritdoc}
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70 */
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71 public function defaultConfiguration() {
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72 return [
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73 'degrees' => 0,
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74 'bgcolor' => NULL,
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75 'random' => FALSE,
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76 ];
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77 }
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78
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79 /**
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80 * {@inheritdoc}
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81 */
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82 public function buildConfigurationForm(array $form, FormStateInterface $form_state) {
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83 $form['degrees'] = [
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84 '#type' => 'number',
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85 '#default_value' => $this->configuration['degrees'],
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86 '#title' => t('Rotation angle'),
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87 '#description' => t('The number of degrees the image should be rotated. Positive numbers are clockwise, negative are counter-clockwise.'),
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88 '#field_suffix' => '°',
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89 '#required' => TRUE,
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90 ];
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91 $form['bgcolor'] = [
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92 '#type' => 'textfield',
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93 '#default_value' => $this->configuration['bgcolor'],
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94 '#title' => t('Background color'),
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95 '#description' => t('The background color to use for exposed areas of the image. Use web-style hex colors (#FFFFFF for white, #000000 for black). Leave blank for transparency on image types that support it.'),
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96 '#size' => 7,
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97 '#maxlength' => 7,
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98 ];
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99 $form['random'] = [
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100 '#type' => 'checkbox',
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101 '#default_value' => $this->configuration['random'],
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102 '#title' => t('Randomize'),
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103 '#description' => t('Randomize the rotation angle for each image. The angle specified above is used as a maximum.'),
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104 ];
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105 return $form;
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106 }
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107
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108 /**
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109 * {@inheritdoc}
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110 */
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111 public function validateConfigurationForm(array &$form, FormStateInterface $form_state) {
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112 if (!$form_state->isValueEmpty('bgcolor') && !Color::validateHex($form_state->getValue('bgcolor'))) {
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113 $form_state->setErrorByName('bgcolor', $this->t('Background color must be a hexadecimal color value.'));
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114 }
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115 }
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116
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117 /**
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118 * {@inheritdoc}
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119 */
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120 public function submitConfigurationForm(array &$form, FormStateInterface $form_state) {
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121 parent::submitConfigurationForm($form, $form_state);
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122
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123 $this->configuration['degrees'] = $form_state->getValue('degrees');
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124 $this->configuration['bgcolor'] = $form_state->getValue('bgcolor');
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125 $this->configuration['random'] = $form_state->getValue('random');
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126 }
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127
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128 }
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