我在yii2中得到了这段代码:
Image::thumbnail($path, 100, 100)->save($thumbnail, ['quality' => 50]);
我认为它会调整保持纵横比的原始图像的大小。 但它只是创造了一个盒子...... 什么可能是错的?
答案 0 :(得分:6)
您可以这样使用:
use Imagine\Image\Box;
Image::frame($path)
->thumbnail(new Box(100, 100))
->save($thumbnail, ['quality' => 50]);
答案 1 :(得分:1)
我在Yii2中使用这样,它工作正常。 它还使宽高比完美地与宽度保持一致。
use yii\imagine\Image;
use Imagine\Image\Box;
...
$imagine = Image::getImagine()
->open($resizeImagePath)
->thumbnail(new Box(120, 120))
->save($thumbnailImagePath, ['quality' => 90]);
答案 2 :(得分:0)
我制作了一个简单的代码来维护图像的宽高比。
use yii\imagine\Image;
............................................... ..................
public function doResize($imageLocation, $imageDestination, Array $options = null)
{
$newWidth = $newHeight = 0;
list($width, $height) = getimagesize($imageLocation);
if(isset($options['newWidth']) || isset($options['newHeight']))
{
if(isset($options['newWidth']) && isset($options['newHeight']))
{
$newWidth = $options['newWidth'];
$newHeight = $options['newHeight'];
}
else if(isset($options['newWidth']))
{
$deviationPercentage = (($width - $options['newWidth']) / (0.01 * $width)) / 100;
$newWidth = $options['newWidth'];
$newHeight = $height - ($height * $deviationPercentage);
}
else
{
$deviationPercentage = (($height - $options['newHeight']) / (0.01 * $height)) / 100;
$newWidth = $width - ($width * $deviationPercentage);
$newHeight = $options['newHeight'];
}
}
else
{
// reduce image size up to 20% by default
$reduceRatio = isset($options['reduceRatio']) ? $options['reduceRatio'] : 20;
$newWidth = $width * ((100 - $reduceRatio) / 100);
$newHeight = $height * ((100 - $reduceRatio) / 100);
}
return Image::thumbnail(
$imageLocation,
(int) $newWidth,
(int) $newHeight
)->save(
$imageDestination,
['quality' => isset($options['quality']) ? $options['quality'] : 100]
);
}
您可以使用它,例如:
(new TheClass)->doResize($imageLocation, $imageDestination, [
'quality' => 70,
'reduceRatio' => 50
]);
// or like this
(new TheClass)->doResize($imageLocation, $imageDestination, [
'quality' => 70,
'width' => 500,
]);
// or like this
(new TheClass)->doResize($imageLocation, $imageDestination, [
'quality' => 70,
'height' => 500,
]);
// and like this (but will break the aspect ratio)
(new TheClass)->doResize($imageLocation, $imageDestination, [
'quality' => 70,
'width' => 100
'height' => 500,
]);