geckon01/simple-image-compressor
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Small code style imporvements

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DESKTOP-G4C80F7\geckon01
2023-03-30 01:17:41 +03:00
parent a6f42255c8
commit a538362343
2 changed files with 32 additions and 20 deletions
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src/SimpleImageCompressor.php
+24 -12
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@@ -8,6 +8,8 @@
namespace geckon01\SimpleImageCompressor; namespace geckon01\SimpleImageCompressor;
use http\Exception\BadUrlException;
/** /**
* Class SimpleImageCompressor * Class SimpleImageCompressor
* @package geckon01\SimpleImageCompressor * @package geckon01\SimpleImageCompressor
@@ -22,6 +24,7 @@ class SimpleImageCompressor
private int $approxMinimumHeight = 90; private int $approxMinimumHeight = 90;
private int $approxMinimumWidth = 90; private int $approxMinimumWidth = 90;
/** /**
* SimpleImageCompressor constructor. * SimpleImageCompressor constructor.
* @param $url * @param $url
@@ -31,6 +34,7 @@ class SimpleImageCompressor
$this->imageResourceUrl = $url; $this->imageResourceUrl = $url;
} }
/** /**
* Returns current loaded image type * Returns current loaded image type
* @return string * @return string
@@ -96,38 +100,46 @@ class SimpleImageCompressor
*/ */
private function readImageToString(): void { private function readImageToString(): void {
$imageData = file_get_contents($this->imageResourceUrl); $imageData = file_get_contents($this->imageResourceUrl);
if($imageData === false)
throw new BadUrlException("Cannot load image from provided resource: ".$this->imageResourceUrl);
$this->imageData = $imageData; $this->imageData = $imageData;
} }
/** /**
* Resizes and compressing image. * Resizes and compressing image.
* Note that gif compression not supported * Note that gif compression not supported
* @param int $resolutionReductionPercent percent shows how much image resolution to original will be. The greater percent, the lower resolution * @param int $reductionPercent percent shows how much image resolution to original will be. The greater percent, the lower resolution
* @param int $quality * @param int $quality
* @return CompressedImage * @return CompressedImage
*/ */
public function resizeAndCompress($resolutionReductionPercent = 5, $quality = 90): CompressedImage public function resizeAndCompress($reductionPercent = 5, $quality = 90): CompressedImage
{ {
$im = imagecreatefromstring($this->imageData); $originImage = imagecreatefromstring($this->imageData);
$width = imagesx($im);
$height = imagesy($im); if($originImage === false)
throw new \Exception("Can not read provided file");
$width = imagesx($originImage);
$height = imagesy($originImage);
$totalPixelCount = $width * $height; $totalPixelCount = $width * $height;
$minimumPixelCount = $this->approxMinimumWidth * $this->approxMinimumHeight; $minimumPixelCount = $this->approxMinimumWidth * $this->approxMinimumHeight;
$maximumResolutionReductionPercent = round(abs(100 - ($minimumPixelCount / $totalPixelCount * 100))); $maxReductionPercent = round(abs(100 - ($minimumPixelCount / $totalPixelCount * 100)));
// Due to saving proportion we can't guarantee that width and height be equals max and min // Due to saving proportion we can't guarantee that width and height be equals max and min
// As example, if we have original image 1920*1080 which we want to get 50% of original resolution // As example, if we have original image 1920*1080 which we want to get 50% of original resolution
// If we want to save 16*9 aspect ration it must be 960*540 // If we want to save 16*9 aspect ration it must be 960*540
//So, we override $maximumResolutionReductionPercent to value which satisfy origin aspect ratio // So, we override $maxReductionPercent to value which satisfy origin aspect ratio
if($maximumResolutionReductionPercent < $resolutionReductionPercent) if($maxReductionPercent < $reductionPercent)
$resolutionReductionPercent = $maximumResolutionReductionPercent; $reductionPercent = $maxReductionPercent;
$newWidth = round($width - ($width * $resolutionReductionPercent) / 100); $newWidth = round($width - ($width * $reductionPercent) / 100);
$newHeight = round($height - ($height * $resolutionReductionPercent) / 100); $newHeight = round($height - ($height * $reductionPercent) / 100);
$thumb = imagecreatetruecolor($newWidth, $newHeight); $thumb = imagecreatetruecolor($newWidth, $newHeight);
imagecopyresized($thumb, $im, 0, 0, 0, 0, $newWidth, $newHeight, $width, $height); imagecopyresized($thumb, $originImage, 0, 0, 0, 0, $newWidth, $newHeight, $width, $height);
return new CompressedImage($quality, $this->imageType,$thumb); return new CompressedImage($quality, $this->imageType,$thumb);
} }