FileSizeOptimizedWidthCalculator::calculateWidths() - Code Metrics - spatie/laravel-medialibrary - Measure and Improve Code Quality continuously with Scrutinizer

calculateWidths() A
last analyzed 2020-01-25 09:30 UTC

↳ Parent: FileSizeOptimizedWidthCalculator

Complexity

Conditions	3
Paths	3

Size

Total Lines

Duplication

Lines	0
Ratio	0 %

Importance

Changes

Metric	Value
dl	0
loc	24
rs	9.536
c	0
b	0
f	0
cc	3
nc	3
nop	3

<?php

namespace Spatie\MediaLibrary\ResponsiveImages\WidthCalculator;

use Illuminate\Support\Collection;
use Spatie\MediaLibrary\Helpers\ImageFactory;

class FileSizeOptimizedWidthCalculator implements WidthCalculator
{
    public function calculateWidthsFromFile(string $imagePath): Collection
    {
        $image = ImageFactory::load($imagePath);

        $width = $image->getWidth();
        $height = $image->getHeight();
        $fileSize = filesize($imagePath);

        return $this->calculateWidths($fileSize, $width, $height);
    }

    public function calculateWidths(int $fileSize, int $width, int $height): Collection
    {
        $targetWidths = collect();

        $targetWidths->push($width);

        $ratio = $height / $width;
        $area = $height * $width;

        $predictedFileSize = $fileSize;
        $pixelPrice = $predictedFileSize / $area;

        while (true) {
            $predictedFileSize *= 0.7;

            $newWidth = (int) floor(sqrt(($predictedFileSize / $pixelPrice) / $ratio));

            if ($this->finishedCalculating($predictedFileSize, $newWidth)) {
                return $targetWidths;
            }

            $targetWidths->push($newWidth);
        }
    }

    protected function finishedCalculating(int $predictedFileSize, int $newWidth): bool
    {
        if ($newWidth < 20) {
            return true;
        }

        if ($predictedFileSize < (1024 * 10)) {
            return true;
        }

        return false;
    }
}


1			<?php
2
3			namespace Spatie\MediaLibrary\ResponsiveImages\WidthCalculator;
4
5			use Illuminate\Support\Collection;
6			use Spatie\MediaLibrary\Helpers\ImageFactory;
7
8			class FileSizeOptimizedWidthCalculator implements WidthCalculator
9			{
10			public function calculateWidthsFromFile(string $imagePath): Collection
11			{
12			$image = ImageFactory::load($imagePath);
13
14			$width = $image->getWidth();
15			$height = $image->getHeight();
16			$fileSize = filesize($imagePath);
17
18			return $this->calculateWidths($fileSize, $width, $height);
19			}
20
21			public function calculateWidths(int $fileSize, int $width, int $height): Collection
22			{
23			$targetWidths = collect();
24
25			$targetWidths->push($width);
26
27			$ratio = $height / $width;
28			$area = $height * $width;
29
30			$predictedFileSize = $fileSize;
31			$pixelPrice = $predictedFileSize / $area;
32
33			while (true) {
34			$predictedFileSize *= 0.7;
35
36			$newWidth = (int) floor(sqrt(($predictedFileSize / $pixelPrice) / $ratio));
37
38			if ($this->finishedCalculating($predictedFileSize, $newWidth)) {
39			return $targetWidths;
40			}
41
42			$targetWidths->push($newWidth);
43			}
44			}
45
46			protected function finishedCalculating(int $predictedFileSize, int $newWidth): bool
47			{
48			if ($newWidth < 20) {
49			return true;
50			}
51
52			if ($predictedFileSize < (1024 * 10)) {
53			return true;
54			}
55
56			return false;
57			}
58			}
59

spatie / laravel-medialibrary

calculateWidths() A last analyzed 2020-01-25 09:30 UTC

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calculateWidths() A
last analyzed 2020-01-25 09:30 UTC