如何为Imagick字幕分别着色文本和背景? [英] How to color text and background separatly for Imagick caption?

问题描述

我只想给字幕文本加上颜色，而不是整个字幕框(或背景). 在Imagemagick 6.3.7之前，我可以使用以下代码来显示红色文本:

I only want to color the caption text, and not the entire caption box (or background). Before Imagemagick 6.3.7 I could use this code to have a red colored text :

$im->newPseudoImage(300, 300, "caption:" . "Put your text" );
$im->colorizeImage('#ff0000',1.0);

我已经升级，因为我需要使用以下代码设置字体和字体大小:

I have upgraded because I need to set a font and a font size with the following code :

$im->setFont("somefont.ttf");
$im->setpointsize(72);

现在colorizeImage不能以相同的方式工作，因为它不仅为字幕TEXT着色，而且为Background字幕也着色..！

Now colorizeImage does not work the same way, as it doesnt' color only the caption TEXT but the caption BACKGROUND also ..!

例如，如果我设置了黑色背景和白色文本:

For example if I set a black background and a white text :

$im->newPseudoImage(300, 300, "caption:" . "Put your text" );
$im->setBackgroundColor('black');
$im->colorizeImage('white',1.0);

我在白色文本或白色框(框文本的颜色)后面有白色背景！

I have a white background behind a white text, or a white box (the color of the text for the box) !

我尝试了不同的方法，在colorizeImage之前或之后设置了setBackgroundColor，仍然是相同的...我做了很多研究，但没有发现其他可以分别为标题和背景标题着色的东西.

I tried different things, setBackgroundColor before or after colorizeImage, still the same... I've made lots of researches but found nothing else to color the caption and the background caption separately.

有人想帮助我吗?提前致谢:)

Anybody with an idea to help me ? Thx in advance :)

推荐答案

1. 您想要透明背景.然后，您将只为前景着色.
2. 使用 clutImage 来应用颜色. colorizeImage 存在替换黑色时应用略深的颜色的问题.

1. You want a transparent background. Then you will only color the foreground.
2. Use clutImage to apply the color. colorizeImage has issues with applying a slightly darker color when replacing black.

$im = new Imagick();
$im->newPseudoImage(300, 300, "caption:" . "Put your text" );
$im->setBackgroundColor('transparent');

$clut = new Imagick();
$clut->newImage(1, 1, new ImagickPixel('#ff0000'));
$txt->clutImage($clut);
$clut->destroy();

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