react-free-transform

ReactJS Free Transform Tool

ReactJs component for resizing, dragging and rotating html elements using css transform matrix

Demo

https://codesandbox.io/s/k0nozy8nyo

Installation

npm install react-free-transform

Usage

import FreeTransform from 'react-free-transform'

 <FreeTransform    
    x={0}
    y={0}
    width={100}
    height={100}
    scaleX={1}
    scaleY={1}
    angle={0}
    onUpdate={({x, y, scaleX, scaleY}) => {}}
    classPrefix="tr"
    disableScale={false}
 >
    <img src="..."/>
 </FreeTransform>

CSS

.tr-transform__rotator {
    top: -45px;
    left: calc(50% - 7px);
}
 
.tr-transform__rotator,
.tr-transform__scale-point {
    background: #fff;
    width: 15px;
    height: 15px;
    border-radius: 50%;
    position: absolute;
    box-shadow: 0 2px 4px 0 rgba(0, 0, 0, 0.1);
    border: 1px solid rgba(0, 0, 0, 0.1);
    cursor: pointer;
}
.tr-transform__rotator:hover,
.tr-transform__scale-point:hover{
    background: #F1F5F8;
}
.tr-transform__rotator:active,
.tr-transform__scale-point:active{
    background: #DAE1E7;
}
.tr-transform__scale-point {
 
}
 
.tr-transform__scale-point--tl {
    top: -7px;
    left: -7px;
}
 
.tr-transform__scale-point--ml {
    top: calc(50% - 7px);
    left: -7px;
}
 
.tr-transform__scale-point--tr {
    left: calc(100% - 7px);
    top: -7px;
}
 
.tr-transform__scale-point--tm {
    left: calc(50% - 7px);
    top: -7px;
}
 
.tr-transform__scale-point--mr {
    left: calc(100% - 7px);
    top: calc(50% - 7px);
}
 
.tr-transform__scale-point--bl {
    left: -7px;
    top: calc(100% - 7px);
}
 
.tr-transform__scale-point--bm {
    left: calc(50% - 7px);
    top: calc(100% - 7px);
}
 
.tr-transform__scale-point--br {
    left: calc(100% - 7px);
    top: calc(100% - 7px);
}

Keyboard shortcuts

shift for aspect ratio resizing

alt for scaling from center

shift while rotation will snap rotation using 15 degrees