PHP - Manual: Imagick::colorizeImage

2024-11-15

Imagick::colorMatrixImage »

« Imagick::colorFloodfillImage

Imagick::colorizeImage

(PECL imagick 2, PECL imagick 3)

Imagick::colorizeImage — Blends the fill color with the image

说明

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

Blends the fill color with each pixel in the image.

参数

colorize: ImagickPixel object or a string containing the colorize color
opacity: ImagickPixel object or an float containing the opacity value. 1.0 is fully opaque and 0.0 is fully transparent.

返回值

成功时返回 true。

错误／异常

错误时抛出 ImagickException。

更新日志

版本	说明
PECL imagick 2.1.0	Now allows a string representing the color as the first parameter and a float representing the opacity value as the second parameter. Previous versions allow only an ImagickPixel objects.

范例

示例 #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();
}

?>

add a note

User Contributed Notes 5 notes

down

Alex Lokhman [VisioN] ¶

8 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();
?>

down

php at lfbittencourt dot com ¶

10 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;

?>

down

olav at redwall dot ee ¶

8 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);
    }
}
?>

down

talkol at gmail dot com ¶

10 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.

down

-2

lsmartinez at gmail dot com ¶

13 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;
?>

add a note

官方地址：https://www.php.net/manual/en/imagick.colorizeimage.php

有任何技术问题请点击这里网站运营推广招聘

IT PHP 编程语言 Linux 开发编程科技 Elasticsearch HTML/CSS/XML 网络 JAVA NoSQL 数据库面试 C/C++ Golang Git 算法操作系统正则表达式 Redis 互联网 MySql JavaScript 运维软件国际架构设计 Mac OS TCP/IP Excel Vim Windows Socket Oracle VR MongoDB Python 运营 MemCache 商业硬件电子娱乐设计 nginx 摄影游戏 WordPress HTTP 团建数码电器

php7 安装fileinfo扩展 preg_split — 通过一个正则表达式分隔字符串 php位值,解决 PHP 中 usort 在值相同时改变原始位置的问题 [PHP] inet_pton/inet_ntop IP地址转换函数 array_multisort() 多字段排序 PHPMailer设置utf8 PHPMailer字符集CharSet ADORecordSet对象 adodb手册 PHP 8.1 [鸟哥]PHP_INT_MIN 和 -9223372036854775808 opcache预加载 Composer的Packagist资源 mysql面试题 [鸟哥]PHP FFI详解 - 一种全新的PHP扩展方式 PHP7添加redis扩展 PHP获取指定函数定义在哪个文件中及行号 PHP mkdir()写出来的权限与mode值不符合 adodb连接mysql多个数据库的问题 PHPstorm 里面Terminal 不能使用 esc键吗退出编辑模式吗 php设置cookie为httponly防止xss攻击

略微加速

PHP官方手册 - 互联网笔记

Imagick::colorizeImage

说明

参数

返回值

错误／异常

更新日志

范例

User Contributed Notes 5 notes