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

Demo

https://codesandbox.io/s/1jl7z9p3q

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 | | aspect-ratio | enable aspect ratio resizing default (true)| | scale-from-center | enable scale from center resizing default (true)|

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