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    Imagick::colorizeImage

    (PECL imagick 2, PECL imagick 3)

    Imagick::colorizeImage — 塗りつぶし色と画像を混合する

    説明

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

    画像の各ピクセルに、塗りつぶし色を混合します。

    パラメータ

    colorize

    色を表す ImagickPixel オブジェクトあるいは文字列。

    opacity

    不透明度を表す ImagickPixel オブジェクトあるいは文字列。 1.0 は完全に不透明、0.0 は完全に透明であることを表します。

    戻り値

    成功した場合に true を返します。

    エラー / 例外

    エラー時に ImagickException をスローします。

    変更履歴

    バージョン 説明
    PECL imagick 2.1.0 色を表す文字列を最初のパラメータとして、 不透明度を表す浮動小数点数値を 2 番目のパラメータとして指定できるようになりました。 これまでのバージョンでは ImagickPixel オブジェクトしか指定できませんでした。

    例

    例1 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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