PHP 8.3.4 Released!

Imagick::colorizeImage

(PECL imagick 2, PECL imagick 3)

Imagick::colorizeImageMélange la couleur de remplissage avec l'image

Description

public Imagick::colorizeImage(mixed $colorize, mixed $opacity, bool $legacy = false): bool

Mélange la couleur de remplissage avec l'image.

Liste de paramètres

colorize

L'objet ImagickPixel ou une chaîne contenant la couleur de colorisation

opacity

L'objet ImagickPixel ou un nombre décimal contenant la valeur de l'opacité. 1.0 est totalement opaque, et 0.0 est totalement transparent.

Valeurs de retour

Retourne true en cas de succès.

Erreurs / Exceptions

Lance une exception ImagickException si une erreur survient.

Historique

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.

Exemples

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();
}

?>

add a note

User Contributed Notes 6 notes

up
8
Alex Lokhman [VisioN]
9 years ago
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();
?>
up
3
olav at redwall dot ee
10 years ago
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);
}
}
?>
up
7
php at lfbittencourt dot com
11 years ago
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;

?>
up
1
adrien at unik dot solutions
1 year ago
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);
}
?>
up
0
talkol at gmail dot com
12 years ago
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.
up
-1
lsmartinez at gmail dot com
14 years ago
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;
?>
To Top