VueJS component for resizing and rotating html elements using css transform matrix

VueJS Free Transform Tool

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

Installation

yarn install vue-free-transform or npm install vue-free-transform --save

Usage

import FreeTransform from 'vue-free-transform'

  
<FreeTransform 
    :x="0"
    :y="0"
    :scale-x="1"
    :scale-y="1"
    :width="100"
    :height="100"
    :angle="0"
    :offset-x="0"
    :offset-y="0"
    @update="update($event)"
>
    <div class="element" :style="{width: `100px`,height: `100px`}">
        <img src="..."/>
    </div>

</FreeTransform>

Optional Attributes

selected
selectOn
styles

Attribute	Description
styles	additional styles for parent wrapper usefull for z-index
selected	hide the controls when values is false
selectOn	trigger selection on `mousedown`, `click` or `dblclick`

Events

onSelect
dblclick
click
mousedown

css

    
    .tr-transform--active{
        position: absolute;
        z-index: 5;
    }
    
    .tr-transform__content{
        user-select: none;
    }
    .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 + alt scaling from center based on aspect ratio

shift while rotation will snap rotation using 15 degrees