Imagick::colorizeImage

    (PECL imagick 2, PECL imagick 3)

    Imagick::colorizeImage — Mélange 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();
    }

    ?>

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    User Contributed Notes 6 notes

    up
    8
    Alex Lokhman [VisioN]
    10 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
    11 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
    12 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
    2 years 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
    15 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;
    ?>
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