(PECL imagick 2, PECL imagick 3)
Imagick::colorizeImage — Mélange la couleur de remplissage avec l'image
Mélange la couleur de remplissage avec l'image.
colorizeL'objet ImagickPixel ou une chaîne contenant la couleur de colorisation
opacityL'objet ImagickPixel ou un nombre décimal contenant la valeur de l'opacité. 1.0 est totalement opaque, et 0.0 est totalement transparent.
Retourne true en cas de succès.
Lance une exception ImagickException si une erreur survient.
| Version | Description |
|---|---|
| PECL imagick 2.1.0 | Maintenant, permet à une chaîne représentant la couleur comme premier argument et un décimal représentant l'opacité comme second paramètre. Les version précédentes ne permettait que l'utilisation d'objet ImagickPixel. |
Exemple #1 Exemple avec Imagick::colorizeImage()
<?php
function colorizeImage($imagePath, $color, $opacity) {
$imagick = new \Imagick(realpath($imagePath));
$opacity = $opacity / 255.0;
$opacityColor = new \ImagickPixel("rgba(0, 0, 0, $opacity)");
$imagick->colorizeImage($color, $opacityColor);
header("Content-Type: image/jpg");
echo $imagick->getImageBlob();
}
?>If you're looking for a solution to fill the image with a solid color, preserving background transparency, here is one way:
<?php
$im = new Imagick('image.png');
$im->setImageAlphaChannel(Imagick::ALPHACHANNEL_EXTRACT);
$im->setImageBackgroundColor('color');
$im->setImageAlphaChannel(Imagick::ALPHACHANNEL_SHAPE);
$im->writeImage('output.png');
$im->destroy();
?>To improve upon "php at lfbittencourt dot com"'s solution, this one blends the composited color, and takes opacity into account as well.
<?php
class YourImagick extends Imagick
{
public function colorize($color, $alpha = 1, $composite_flag = Imagick::COMPOSITE_COLORIZE)
{
$draw = new ImagickDraw();
$draw->setFillColor($color);
$geometry = $this->getImageGeometry();
$width = $geometry['width'];
$height = $geometry['height'];
$draw->rectangle(0, 0, $width, $height);
$temporary = new Imagick();
$temporary->setBackgroundColor(new ImagickPixel('transparent'));
$temporary->newImage($width, $height, new ImagickPixel('transparent'));
$temporary->setImageFormat('png32');
$temporary->drawImage($draw);
$alphaChannel = $this->clone();
$alphaChannel->setImageAlphaChannel(Imagick::ALPHACHANNEL_EXTRACT);
$alphaChannel->negateImage(false, Imagick::CHANNEL_ALL);
$this->setImageClipMask($alphaChannel);
$clone = $this->clone();
$clone->compositeImage($temporary, $composite_flag, 0, 0);
$clone->setImageOpacity($alpha);
$this->compositeImage($clone, Imagick::COMPOSITE_DEFAULT, 0, 0);
}
}
?>Do you want a color overlay with TRUE opacity control? Try this:
<?php
class YourImagick extends Imagick
{
public function colorize($color, $alpha = 1)
{
$draw = new ImagickDraw();
$draw->setFillColor($color);
if (is_float($alpha)) {
$draw->setFillAlpha($alpha);
}
$geometry = $this->getImageGeometry();
$width = $geometry['width'];
$height = $geometry['height'];
$draw->rectangle(0, 0, $width, $height);
$this->drawImage($draw);
}
}
?>
How to use:
<?php
$imagick = new YourImagick('example.png');
$imagick->colorize('#ffcc00', 0.35);
header('Content-type: image/png');
echo $source;
?>The solution published by "olav at redwall dot ee " was adding a black surround outside each non-transparent shape.
Here is my improved version :
<?php
public function colorize($color, $alpha = 1)
{
$geometry = $this->getImageGeometry();
$width = $geometry['width'];
$height = $geometry['height'];
$draw = new ImagickDraw;
$draw->setFillColor($color);
$draw->rectangle(0, 0, $width, $height);
$temporary = new Imagick;
$temporary->setBackgroundColor(new ImagickPixel('transparent'));
$temporary->newImage($width, $height, new ImagickPixel('transparent'));
$temporary->setImageFormat('png32');
$temporary->drawImage($draw);
$temporary->compositeImage($this, Imagick::COMPOSITE_COPYOPACITY, 0, 0);
$this->setImageArtifact('compose:args', ($alpha * 100) . '%,100%');
$this->compositeImage($temporary, Imagick::COMPOSITE_DISSOLVE, 0, 0);
}
?>When you're using an image with an alpha channel (for example a transparent png), a value of 1.0 will return a completely transparent image, but a value of 1 works just fine.simplest example
<?php
$nombre = '001-4-0043.jpg';
$img = new Imagick($nombre);
$img->negateImage(false);
//$pixblu = new ImagickPixel('#000040');
$img->colorizeImage('#0000b0',1.0);
header('content-type: image/jpeg');
echo $img;
?>