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Transparent background when rotate an image (gd) #231

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Transparent background when rotate an image (gd) #231

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5 changes: 4 additions & 1 deletion libs/vendor/Imagine/Gd/Image.php
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Original file line number Diff line number Diff line change
Expand Up @@ -196,7 +196,10 @@ final public function resize(BoxInterface $size, $filter = ImageInterface::FILTE
final public function rotate($angle, ColorInterface $background = null)
{
$color = $background ? $background : $this->palette->color('fff');
$resource = imagerotate($this->resource, -1 * $angle, $this->getColor($color));
imagealphablending($this->resource, true);
$resource = imagerotate($this->resource, -1 * $angle, imageColorAllocateAlpha($this->resource, 0, 0, 0, 127));
imagealphablending($resource, false);
imagesavealpha($resource, true);

if (false === $resource) {
throw new RuntimeException('Image rotate operation failed');
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