nystudio107 /
craft-imageoptimize
| Total Complexity | 84 |
| Total Lines | 839 |
| Duplicated Lines | 0 % |
| Changes | 10 | ||
| Bugs | 0 | Features | 0 |
Complex classes like OptimizedImage often do a lot of different things. To break such a class down, we need to identify a cohesive component within that class. A common approach to find such a component is to look for fields/methods that share the same prefixes, or suffixes.
Once you have determined the fields that belong together, you can apply the Extract Class refactoring. If the component makes sense as a sub-class, Extract Subclass is also a candidate, and is often faster.
While breaking up the class, it is a good idea to analyze how other classes use OptimizedImage, and based on these observations, apply Extract Interface, too.
| 1 | <?php |
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| 27 | class OptimizedImage extends Model |
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| 28 | { |
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| 29 | // Public Properties |
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| 30 | // ========================================================================= |
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| 31 | |||
| 32 | /** |
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| 33 | * @var string[] An array of optimized image variant URLs |
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| 34 | */ |
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| 35 | public $optimizedImageUrls = []; |
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| 36 | |||
| 37 | /** |
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| 38 | * @var string[] An array of optimized .webp image variant URLs |
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| 39 | */ |
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| 40 | public $optimizedWebPImageUrls = []; |
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| 41 | |||
| 42 | /** |
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| 43 | * @var int[] An array of the widths of the optimized image variants |
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| 44 | */ |
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| 45 | public $variantSourceWidths = []; |
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| 46 | |||
| 47 | /** |
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| 48 | * @var int[] An array of the heights of the optimized image variants |
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| 49 | */ |
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| 50 | public $variantHeights = []; |
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| 51 | |||
| 52 | /** |
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| 53 | * @var float[] An array of the x,y image focal point coords, ranging from 0.0 to 1.0 |
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| 54 | */ |
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| 55 | public $focalPoint; |
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| 56 | |||
| 57 | /** |
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| 58 | * @var int The width of the original source image |
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| 59 | */ |
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| 60 | public $originalImageWidth; |
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| 61 | |||
| 62 | /** |
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| 63 | * @var int The height of the original source image |
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| 64 | */ |
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| 65 | public $originalImageHeight; |
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| 66 | |||
| 67 | /** |
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| 68 | * @var string The base64 encoded placeholder LQIP image |
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| 69 | */ |
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| 70 | public $placeholder = ''; |
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| 71 | |||
| 72 | /** |
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| 73 | * @var string The base64 encoded placeholder LQIP SVG image |
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| 74 | */ |
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| 75 | public $placeholderSvg = ''; |
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| 76 | |||
| 77 | /** |
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| 78 | * @var string[] An array the 5 most dominant colors in the image |
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| 79 | */ |
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| 80 | public $colorPalette = []; |
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| 81 | |||
| 82 | /** |
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| 83 | * @var int The overall lightness of the image, from 0..100 |
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| 84 | */ |
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| 85 | public $lightness; |
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| 86 | |||
| 87 | /** |
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| 88 | * @var int The width of the placeholder image |
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| 89 | */ |
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| 90 | public $placeholderWidth; |
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| 91 | |||
| 92 | /** |
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| 93 | * @var int The height of the placeholder image |
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| 94 | */ |
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| 95 | public $placeholderHeight; |
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| 96 | |||
| 97 | /** |
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| 98 | * @var string[] An array of errors logged when generating the image transforms |
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| 99 | */ |
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| 100 | public $stickyErrors = []; |
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| 101 | |||
| 102 | // Public Methods |
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| 103 | // ========================================================================= |
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| 104 | |||
| 105 | /** |
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| 106 | * @inheritdoc |
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| 107 | */ |
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| 108 | public function rules(): array |
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| 109 | { |
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| 110 | return [ |
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| 111 | ['optimizedImageUrls', ArrayValidator::class], |
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| 112 | ['optimizedWebPImageUrls', ArrayValidator::class], |
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| 113 | ['variantSourceWidths', ArrayValidator::class], |
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| 114 | ['variantHeights', ArrayValidator::class], |
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| 115 | ['focalPoint', 'safe'], |
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| 116 | ['originalImageWidth', 'integer'], |
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| 117 | ['originalImageHeight', 'integer'], |
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| 118 | ['placeholder', 'string'], |
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| 119 | ['placeholderSvg', 'string'], |
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| 120 | ['colorPalette', ArrayValidator::class], |
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| 121 | ['placeholderWidth', 'integer'], |
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| 122 | ['placeholderHeight', 'integer'], |
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| 123 | ['stickyErrors', ArrayValidator::class], |
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| 124 | ]; |
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| 125 | } |
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| 126 | |||
| 127 | /** |
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| 128 | * Return the first image variant URL or the specific one passed in via |
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| 129 | * $width |
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| 130 | * |
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| 131 | * @param int $width |
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| 132 | * |
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| 133 | * @return \Twig\Markup|null |
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| 134 | */ |
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| 135 | public function src(int $width = 0): string |
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| 136 | { |
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| 137 | if (empty($width)) { |
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| 138 | return Template::raw(reset($this->optimizedImageUrls)); |
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| 139 | } |
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| 140 | |||
| 141 | return Template::raw($this->optimizedImageUrls[$width] ?? ''); |
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| 142 | } |
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| 143 | |||
| 144 | /** |
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| 145 | * Getter for CraftQL |
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| 146 | * |
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| 147 | * @param int $width |
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| 148 | * |
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| 149 | * @return null|string|\Twig\Markup |
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| 150 | */ |
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| 151 | public function getSrc(int $width = 0): string |
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| 152 | { |
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| 153 | return $this->src($width); |
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| 154 | } |
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| 155 | |||
| 156 | /** |
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| 157 | * Return a string of image URLs and their sizes |
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| 158 | * |
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| 159 | * @param bool $dpr Whether to generate 1x, 2x srcsets vs the normal XXXw |
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| 160 | * srcsets |
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| 161 | * |
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| 162 | * @return \Twig\Markup|null |
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| 163 | */ |
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| 164 | public function srcset(bool $dpr = false): string |
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| 165 | { |
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| 166 | return Template::raw($this->getSrcsetFromArray($this->optimizedImageUrls, $dpr)); |
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| 167 | } |
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| 168 | |||
| 169 | /** |
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| 170 | * Getter for CraftQL |
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| 171 | * |
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| 172 | * @param bool $dpr |
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| 173 | * |
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| 174 | * @return string |
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| 175 | */ |
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| 176 | public function getSrcset(bool $dpr = false): string |
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| 177 | { |
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| 178 | return $this->srcset($dpr); |
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| 179 | } |
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| 180 | /** |
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| 181 | * Return a string of image URLs and their sizes that match $width |
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| 182 | * |
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| 183 | * @param int $width |
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| 184 | * @param bool $dpr Whether to generate 1x, 2x srcsets vs the normal XXXw |
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| 185 | * srcsets |
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| 186 | * |
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| 187 | * @return \Twig\Markup|null |
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| 188 | */ |
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| 189 | public function srcsetWidth(int $width, bool $dpr = false): string |
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| 190 | { |
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| 191 | $subset = $this->getSrcsetSubsetArray($this->optimizedImageUrls, $width, 'width'); |
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| 192 | |||
| 193 | return Template::raw($this->getSrcsetFromArray($subset, $dpr)); |
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| 194 | } |
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| 195 | |||
| 196 | /** |
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| 197 | * Return a string of image URLs and their sizes that are at least $width |
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| 198 | * or larger |
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| 199 | * |
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| 200 | * @param int $width |
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| 201 | * @param bool $dpr Whether to generate 1x, 2x srcsets vs the normal XXXw |
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| 202 | * srcsets |
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| 203 | * |
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| 204 | * @return \Twig\Markup|null |
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| 205 | */ |
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| 206 | public function srcsetMinWidth(int $width, bool $dpr = false): string |
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| 207 | { |
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| 208 | $subset = $this->getSrcsetSubsetArray($this->optimizedImageUrls, $width, 'minwidth'); |
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| 209 | |||
| 210 | return Template::raw($this->getSrcsetFromArray($subset, $dpr)); |
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| 211 | } |
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| 212 | |||
| 213 | /** |
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| 214 | * Return a string of image URLs and their sizes that are $width or smaller |
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| 215 | * |
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| 216 | * @param int $width |
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| 217 | * @param bool $dpr Whether to generate 1x, 2x srcsets vs the normal XXXw |
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| 218 | * srcsets |
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| 219 | * |
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| 220 | * @return \Twig\Markup|null |
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| 221 | */ |
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| 222 | public function srcsetMaxWidth(int $width, bool $dpr = false): string |
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| 223 | { |
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| 224 | $subset = $this->getSrcsetSubsetArray($this->optimizedImageUrls, $width, 'maxwidth'); |
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| 225 | |||
| 226 | return Template::raw($this->getSrcsetFromArray($subset, $dpr)); |
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| 227 | } |
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| 228 | |||
| 229 | /** |
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| 230 | * Return the first webp image variant URL or the specific one passed in |
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| 231 | * via $width |
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| 232 | * |
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| 233 | * @param int $width |
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| 234 | * |
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| 235 | * @return \Twig\Markup|null |
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| 236 | */ |
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| 237 | public function srcWebp(int $width = 0): string |
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| 238 | { |
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| 239 | if (empty($width)) { |
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| 240 | return Template::raw(reset($this->optimizedWebPImageUrls)); |
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| 241 | } |
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| 242 | |||
| 243 | return Template::raw($this->optimizedWebPImageUrls[$width] ?? ''); |
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| 244 | } |
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| 245 | |||
| 246 | /** |
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| 247 | * Getter for CraftQL |
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| 248 | * |
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| 249 | * @param int $width |
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| 250 | * |
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| 251 | * @return string |
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| 252 | */ |
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| 253 | public function getSrcWebp(int $width = 0): string |
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| 254 | { |
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| 255 | return $this->srcWebp($width); |
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| 256 | } |
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| 257 | |||
| 258 | /** |
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| 259 | * Return a string of webp image URLs and their sizes |
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| 260 | * |
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| 261 | * @param bool $dpr Whether to generate 1x, 2x srcsets vs the normal XXXw |
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| 262 | * srcsets |
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| 263 | * |
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| 264 | * @return \Twig\Markup|null |
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| 265 | */ |
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| 266 | public function srcsetWebp(bool $dpr = false): string |
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| 269 | } |
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| 270 | |||
| 271 | /** |
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| 272 | * Getter for CraftQL |
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| 273 | * |
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| 274 | * @param bool $dpr |
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| 275 | * |
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| 276 | * @return string |
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| 277 | */ |
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| 278 | public function getSrcsetWebp(bool $dpr = false): string |
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| 279 | { |
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| 280 | return $this->srcsetWebp($dpr); |
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| 281 | } |
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| 282 | |||
| 283 | /** |
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| 284 | * Return a string of webp image URLs and their sizes that match $width |
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| 285 | * |
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| 286 | * @param int $width |
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| 287 | * @param bool $dpr Whether to generate 1x, 2x srcsets vs the normal XXXw |
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| 288 | * srcsets |
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| 289 | * |
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| 290 | * @return \Twig\Markup|null |
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| 291 | */ |
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| 292 | public function srcsetWidthWebp(int $width, bool $dpr = false): string |
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| 293 | { |
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| 294 | $subset = $this->getSrcsetSubsetArray($this->optimizedWebPImageUrls, $width, 'width'); |
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| 295 | |||
| 296 | return Template::raw($this->getSrcsetFromArray($subset, $dpr)); |
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| 297 | } |
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| 298 | |||
| 299 | /** |
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| 300 | * Return a string of webp image URLs and their sizes that are at least |
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| 301 | * $width or larger |
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| 302 | * |
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| 303 | * @param int $width |
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| 304 | * @param bool $dpr Whether to generate 1x, 2x srcsets vs the normal XXXw |
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| 305 | * srcsets |
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| 306 | * |
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| 307 | * @return \Twig\Markup|null |
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| 308 | */ |
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| 309 | public function srcsetMinWidthWebp(int $width, bool $dpr = false): string |
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| 310 | { |
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| 311 | $subset = $this->getSrcsetSubsetArray($this->optimizedWebPImageUrls, $width, 'minwidth'); |
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| 312 | |||
| 313 | return Template::raw($this->getSrcsetFromArray($subset, $dpr)); |
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| 314 | } |
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| 315 | |||
| 316 | /** |
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| 317 | * Return a string of webp image URLs and their sizes that are $width or |
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| 318 | * smaller |
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| 319 | * |
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| 320 | * @param int $width |
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| 321 | * @param bool $dpr Whether to generate 1x, 2x srcsets vs the normal XXXw |
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| 322 | * srcsets |
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| 323 | * |
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| 324 | * @return \Twig\Markup|null |
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| 325 | */ |
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| 326 | public function srcsetMaxWidthWebp(int $width, bool $dpr = false): string |
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| 327 | { |
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| 328 | $subset = $this->getSrcsetSubsetArray($this->optimizedWebPImageUrls, $width, 'maxwidth'); |
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| 329 | |||
| 330 | return Template::raw($this->getSrcsetFromArray($subset, $dpr)); |
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| 331 | } |
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| 332 | |||
| 333 | /** |
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| 334 | * Work around issues with `<img srcset>` returning sizes larger than are |
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| 335 | * available as per: |
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| 336 | * https://medium.com/@MRWwebDesign/responsive-images-the-sizes-attribute-and-unexpected-image-sizes-882a2eadb6db |
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| 337 | * |
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| 338 | * @return int |
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| 339 | */ |
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| 340 | public function maxSrcsetWidth(): int |
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| 341 | { |
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| 342 | $result = 0; |
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| 343 | if (!empty($this->optimizedImageUrls)) { |
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| 344 | $tempArray = $this->optimizedImageUrls; |
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| 345 | ksort($tempArray, SORT_NUMERIC); |
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| 346 | |||
| 347 | $keys = array_keys($tempArray); |
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| 348 | $result = end($keys); |
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| 349 | } |
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| 350 | |||
| 351 | return $result; |
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| 352 | } |
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| 353 | |||
| 354 | /** |
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| 355 | * Getter for CraftQL |
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| 356 | * |
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| 357 | * @return int |
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| 358 | */ |
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| 359 | public function getMaxSrcsetWidth(): int |
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| 360 | { |
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| 361 | return $this->maxSrcsetWidth(); |
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| 362 | } |
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| 363 | |||
| 364 | /** |
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| 365 | * Return the colors as an array of RGB colors |
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| 366 | */ |
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| 367 | public function colorPaletteRgb(): array |
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| 378 | } |
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| 379 | |||
| 380 | /** |
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| 381 | * Generate a complete <link rel="preload"> tag for this OptimizedImages model |
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| 382 | * ref: https://web.dev/preload-responsive-images/#imagesrcset-and-imagesizes |
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| 383 | * |
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| 384 | * @param array $linkAttrs |
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| 385 | * |
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| 386 | * @return \Twig\Markup |
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| 387 | */ |
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| 388 | public function linkPreloadTag($linkAttrs = []) |
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| 389 | { |
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| 390 | // Any web browser that supports link rel="preload" as="image" also supports webp, so prefer that |
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| 391 | $srcset = $this->optimizedImageUrls; |
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| 392 | if (!empty($this->optimizedWebPImageUrls)) { |
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| 393 | $srcset = $this->optimizedWebPImageUrls; |
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| 394 | } |
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| 395 | // Merge the passed in options with the tag attributes |
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| 396 | $attrs = array_merge([ |
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| 397 | 'rel' => 'preload', |
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| 398 | 'as' => 'image', |
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| 399 | 'href' => reset($srcset), |
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| 400 | 'imagesrcset' => $this->getSrcsetFromArray($srcset), |
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| 401 | 'imagesizes' => '100vw', |
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| 402 | ], |
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| 403 | $linkAttrs |
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| 404 | ); |
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| 405 | // Remove any empty attributes |
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| 406 | $attrs = array_filter($attrs); |
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| 407 | // Render the tag |
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| 408 | $tag = Html::tag('link', '', $attrs); |
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| 409 | |||
| 410 | return Template::raw($tag); |
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| 411 | } |
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| 412 | |||
| 413 | /** |
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| 414 | * Generate a complete <img> tag for this OptimizedImages model |
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| 415 | * |
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| 416 | * @param string $loading 'eager', 'lazy', 'lazySizes', 'lazySizesFallback' |
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| 417 | * @param string $placeHolder 'box', 'color', 'image', 'silhouette' |
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| 418 | * @param array $imgAttrs |
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| 419 | * |
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| 420 | * @return \Twig\Markup |
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| 421 | */ |
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| 422 | public function imgTag($loading = 'eager', $placeHolder = 'box', $imgAttrs = []) |
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| 447 | } |
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| 448 | |||
| 449 | /** |
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| 450 | * Generate a complete <picture> tag for this OptimizedImages model |
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| 451 | * |
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| 452 | * @param string $loading 'eager', 'lazy', 'lazySizes', 'lazySizesFallback' |
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| 453 | * @param string $placeHolder 'box', 'color', 'image', 'silhouette' |
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| 454 | * @param array $pictureAttrs |
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| 455 | * @param array $srcsetAttrs |
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| 456 | * @param array $imgAttrs |
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| 457 | * |
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| 458 | * @return \Twig\Markup |
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| 459 | */ |
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| 460 | public function pictureTag($loading = 'eager', $placeHolder = 'box', $pictureAttrs = [], $srcsetAttrs = [], $imgAttrs = []) |
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| 531 | } |
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| 532 | |||
| 533 | /** |
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| 534 | * Return a base64-encoded placeholder image |
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| 535 | * |
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| 536 | * @return \Twig\Markup|null |
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| 537 | */ |
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| 538 | public function placeholderImage() |
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| 539 | { |
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| 540 | $header = 'data:image/jpeg;base64,'; |
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| 541 | if (!empty($this->placeholder)) { |
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| 542 | $content = $this->placeholder; |
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| 543 | } else { |
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| 544 | // At least return something |
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| 545 | return $this->defaultPlaceholderImage(); |
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| 546 | } |
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| 547 | |||
| 548 | return Template::raw($header.rawurlencode($content)); |
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| 549 | } |
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| 550 | |||
| 551 | /** |
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| 552 | * Getter for CraftQL |
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| 553 | * |
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| 554 | * @return string |
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| 555 | */ |
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| 556 | public function getPlaceholderImage(): string |
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| 557 | { |
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| 558 | return (string)$this->placeholderImage(); |
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| 559 | } |
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| 560 | |||
| 561 | /** |
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| 562 | * @return string |
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| 563 | */ |
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| 564 | public function placeholderImageSize(): string |
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| 565 | { |
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| 566 | $placeholder = $this->placeholderImage(); |
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| 567 | $contentLength = !empty(\strlen($placeholder)) ? \strlen($placeholder) : 0; |
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| 568 | |||
| 569 | return ImageOptimize::$plugin->optimize->humanFileSize($contentLength, 1); |
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| 570 | } |
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| 571 | |||
| 572 | /** |
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| 573 | * Return an SVG box as a placeholder image |
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| 574 | * |
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| 575 | * @param string|null $color |
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| 576 | * |
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| 577 | * @return \Twig\Markup|null |
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| 578 | */ |
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| 579 | public function placeholderBox(string $color = null) |
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| 580 | { |
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| 581 | $width = $this->placeholderWidth ?? 1; |
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| 582 | $height = $this->placeholderHeight ?? 1; |
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| 583 | $color = $color ?? $this->colorPalette[0] ?? '#CCC'; |
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| 584 | |||
| 585 | return Template::raw(ImageOptimize::$plugin->placeholder->generatePlaceholderBox($width, $height, $color)); |
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| 586 | } |
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| 587 | |||
| 588 | /** |
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| 589 | * @param string|null $color |
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| 590 | * |
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| 591 | * @return string |
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| 592 | */ |
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| 593 | public function getPlaceholderBox(string $color = null): string |
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| 594 | { |
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| 595 | return (string)$this->placeholderBox($color); |
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| 596 | } |
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| 597 | |||
| 598 | /** |
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| 599 | * Getter for CraftQL |
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| 600 | * |
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| 601 | * @return string |
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| 602 | */ |
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| 603 | public function placeholderBoxSize(): string |
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| 604 | { |
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| 605 | $placeholder = $this->placeholderBox(); |
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| 606 | $contentLength = !empty(\strlen($placeholder)) ? \strlen($placeholder) : 0; |
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| 607 | |||
| 608 | return ImageOptimize::$plugin->optimize->humanFileSize($contentLength, 1); |
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| 609 | } |
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| 610 | |||
| 611 | /** |
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| 612 | * Return a silhouette of the image as an SVG placeholder |
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| 613 | * |
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| 614 | * @return \Twig\Markup|null |
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| 615 | */ |
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| 616 | public function placeholderSilhouette() |
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| 617 | { |
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| 618 | $header = 'data:image/svg+xml,'; |
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| 619 | if (!empty($this->placeholderSvg)) { |
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| 620 | $content = $this->placeholderSvg; |
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| 621 | } else { |
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| 622 | // At least return something |
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| 623 | return $this->defaultPlaceholderImage(); |
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| 624 | } |
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| 625 | |||
| 626 | return Template::raw($header.$content); |
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| 627 | } |
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| 628 | |||
| 629 | /** |
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| 630 | * Getter for CraftQL |
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| 631 | * |
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| 632 | * @return string |
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| 633 | */ |
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| 634 | public function getPlaceholderSilhouette(): string |
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| 635 | { |
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| 636 | return (string)$this->placeholderSilhouette(); |
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| 637 | } |
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| 638 | |||
| 639 | /** |
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| 640 | * @return string |
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| 641 | */ |
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| 642 | public function placeholderSilhouetteSize(): string |
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| 643 | { |
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| 644 | $placeholder = $this->placeholderSilhouette(); |
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| 645 | $contentLength = !empty(\strlen($placeholder)) ? \strlen($placeholder) : 0; |
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| 646 | |||
| 647 | return ImageOptimize::$plugin->optimize->humanFileSize($contentLength, 1); |
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| 648 | } |
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| 649 | |||
| 650 | /** |
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| 651 | * Get the file size of any remote resource (using curl), |
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| 652 | * either in bytes or - default - as human-readable formatted string. |
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| 653 | * |
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| 654 | * @author Stephan Schmitz <[email protected]> |
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| 655 | * @license MIT <http://eyecatchup.mit-license.org/> |
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| 656 | * @url <https://gist.github.com/eyecatchup/f26300ffd7e50a92bc4d> |
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| 657 | * |
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| 658 | * @param string $url Takes the remote object's URL. |
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| 659 | * @param boolean $formatSize Whether to return size in bytes or |
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| 660 | * formatted. |
||
| 661 | * @param boolean $useHead Whether to use HEAD requests. If false, |
||
| 662 | * uses GET. |
||
| 663 | * |
||
| 664 | * @return int|mixed|string Returns human-readable formatted size |
||
| 665 | * or size in bytes (default: formatted). |
||
| 666 | */ |
||
| 667 | public function getRemoteFileSize($url, $formatSize = true, $useHead = true) |
||
| 668 | { |
||
| 669 | // Get an absolute URL with protocol that curl will be happy with |
||
| 670 | $url = UrlHelper::absoluteUrlWithProtocol($url); |
||
| 671 | $ch = curl_init($url); |
||
| 672 | curl_setopt_array($ch, [ |
||
| 673 | CURLOPT_RETURNTRANSFER => 1, |
||
| 674 | CURLOPT_FOLLOWLOCATION => 1, |
||
| 675 | CURLOPT_SSL_VERIFYPEER => 0, |
||
| 676 | ]); |
||
| 677 | if ($useHead) { |
||
| 678 | curl_setopt($ch, CURLOPT_NOBODY, 1); |
||
| 679 | } |
||
| 680 | curl_exec($ch); |
||
| 681 | // content-length of download (in bytes), read from Content-Length: field |
||
| 682 | $contentLength = curl_getinfo($ch, CURLINFO_CONTENT_LENGTH_DOWNLOAD); |
||
| 683 | curl_close($ch); |
||
| 684 | // cannot retrieve file size, return "-1" |
||
| 685 | if (!$contentLength) { |
||
| 686 | return -1; |
||
| 687 | } |
||
| 688 | // return size in bytes |
||
| 689 | if (!$formatSize) { |
||
| 690 | return $contentLength; |
||
| 691 | } |
||
| 692 | |||
| 693 | return ImageOptimize::$plugin->optimize->humanFileSize($contentLength, 1); |
||
| 694 | } |
||
| 695 | |||
| 696 | // Protected Methods |
||
| 697 | // ========================================================================= |
||
| 698 | |||
| 699 | protected function getSrcsetSubsetArray(array $set, int $width, string $comparison): array |
||
| 700 | { |
||
| 701 | $subset = []; |
||
| 702 | $index = 0; |
||
| 703 | if (empty($this->variantSourceWidths)) { |
||
| 704 | return $subset; |
||
| 705 | } |
||
| 706 | foreach ($this->variantSourceWidths as $variantSourceWidth) { |
||
| 707 | $match = false; |
||
| 708 | switch ($comparison) { |
||
| 709 | case 'width': |
||
| 710 | if ($variantSourceWidth == $width) { |
||
| 711 | $match = true; |
||
| 712 | } |
||
| 713 | break; |
||
| 714 | |||
| 715 | case 'minwidth': |
||
| 716 | if ($variantSourceWidth >= $width) { |
||
| 717 | $match = true; |
||
| 718 | } |
||
| 719 | break; |
||
| 720 | |||
| 721 | case 'maxwidth': |
||
| 722 | if ($variantSourceWidth <= $width) { |
||
| 723 | $match = true; |
||
| 724 | } |
||
| 725 | break; |
||
| 726 | } |
||
| 727 | if ($match) { |
||
| 728 | $subset += array_slice($set, $index, 1, true); |
||
| 729 | } |
||
| 730 | $index++; |
||
| 731 | } |
||
| 732 | |||
| 733 | return $subset; |
||
| 734 | } |
||
| 735 | |||
| 736 | /** |
||
| 737 | * @param array $array |
||
| 738 | * @param bool $dpr |
||
| 739 | * |
||
| 740 | * @return string |
||
| 741 | */ |
||
| 742 | protected function getSrcsetFromArray(array $array, bool $dpr = false): string |
||
| 743 | { |
||
| 744 | $srcset = ''; |
||
| 745 | foreach ($array as $key => $value) { |
||
| 746 | if ($dpr) { |
||
| 747 | $descriptor = '1x'; |
||
| 748 | if (!empty($array[(int)$key / 2])) { |
||
| 749 | $descriptor = '2x'; |
||
| 750 | } |
||
| 751 | if (!empty($array[(int)$key / 3])) { |
||
| 752 | $descriptor = '3x'; |
||
| 753 | } |
||
| 754 | } else { |
||
| 755 | $descriptor = $key.'w'; |
||
| 756 | } |
||
| 757 | $srcset .= $value.' '.$descriptor.', '; |
||
| 758 | } |
||
| 759 | $srcset = rtrim($srcset, ', '); |
||
| 760 | |||
| 761 | return $srcset; |
||
| 762 | } |
||
| 763 | |||
| 764 | /** |
||
| 765 | * Return a default placeholder image |
||
| 766 | * |
||
| 767 | * @return \Twig\Markup |
||
| 768 | */ |
||
| 769 | protected function defaultPlaceholderImage(): \Twig\Markup |
||
| 770 | { |
||
| 771 | $width = 1; |
||
| 772 | $height = 1; |
||
| 773 | $color = '#CCC'; |
||
| 774 | |||
| 775 | return Template::raw(ImageOptimize::$plugin->placeholder->generatePlaceholderBox($width, $height, $color)); |
||
| 776 | } |
||
| 777 | |||
| 778 | /** |
||
| 779 | * Swap the tag attributes to work with lazy loading |
||
| 780 | * ref: https://web.dev/native-lazy-loading/#how-do-i-handle-browsers-that-don't-yet-support-native-lazy-loading |
||
| 781 | * |
||
| 782 | * @param string $loading 'eager', 'lazy', 'lazySizes', 'lazySizesFallback' |
||
| 783 | * @param string $placeHolder 'box', 'color', 'image', 'silhouette' |
||
| 784 | * @param array $attrs |
||
| 785 | * |
||
| 786 | * @return array |
||
| 787 | */ |
||
| 788 | protected function swapLazyLoadAttrs(string $loading, string $placeHolder, array $attrs): array |
||
| 835 | } |
||
| 836 | |||
| 837 | /** |
||
| 838 | * Return a lazy loading placeholder image based on the passed in $lazyload setting |
||
| 839 | * |
||
| 840 | * @param string $lazyLoad |
||
| 841 | * |
||
| 842 | * @return string |
||
| 843 | */ |
||
| 844 | protected function getLazyLoadSrc(string $lazyLoad): string |
||
| 866 | } |
||
| 867 | } |
||
| 868 |
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