我的客户需要他的访问者能够上传、缩放和裁剪图像，在裁剪的图像上添加文本并选择文本的位置。
像这张图片上的例子：http://devadesign.biz/example.jpg
单击提交按钮后，必须将带有文本的裁剪图像保存在特定文件夹中。
有没有类似的插件或教程？
我已经尝试过一些插件和脚本，例如：
https://artisansweb.net/upload-crop-resize-image-using-jquery-php/
https://www.sanwebe.com/2012/05/ajax-image-upload-and-resize-with-jquery-and-php
https://www.sitepoint.com/crop-and-resize-images-with-imagemagick/
http://www.croppic.net/
https://foliotek.github.io/Croppie/
...但它们都不支持添加文本。
谢谢！
【问题讨论】：
您可以在 Imagemagick 中做到这一点。这是一个例子：
输入：
line 1: read input and put into memory and delete input
line 2: add contast to memory input
line 3-5: add white to memory input
line 6-7: create a white image with a black rectangle in the middle as a mask
line 8: composite the two modified input images using the mask
line 9: set up the fill and stroke for creating a black outline around the middle
line 10: draw the black polygon rectangle
line 11: set up the pointsize and colors for the text
line 12: draw the text with annotate
line 13: save the output
convert lena.jpg -write mpr:img +delete \
\( mpr:img -level 10x100% \) \
\( mpr:img -alpha set \
-channel a -evaluate set 80% +channel \
-background white -flatten \) \
\( -clone 0 -fill white -colorize 100 \
-fill black -draw "rectangle 64,64 192,192" -alpha off \) \
-compose over -composite \
-fill none -stroke black \
-draw "polygon 64,64 192,64 192,192 64,192" -alpha off \
-gravity center -pointsize 24 -fill white -stroke white \
-annotate +0+0 "TESTING" \
result.png
有关绘图选项，请参阅https://imagemagick.org/Usage/draw
Wordpress 有一个 Imagemagick 插件。见https://wordpress.org/plugins/tags/imagemagick/
【讨论】：