/
FabricImageComposer.vue
210 lines (200 loc) · 7.1 KB
/
FabricImageComposer.vue
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<template>
<div class="fabric-image-composer container mx-auto mb-5 text-center">
<h1 class="text-2xl font-bold">Image Composer</h1>
<small>
<router-link class="text-blue-500" to="/">
Return Home
</router-link>
</small>
<template v-if="giveSize">
<button class="block bg-yellow-400 hover:bg-yellow-500 rounded-md text-white px-3 py-1 my-3 mx-auto" @click="onSave">Download</button>
<canvas id="c" class="border border-slate-400"></canvas>
<div class="grid gap-x-4 grid-cols-1 sm:grid-cols-2 md:grid-cols-3 px-5">
<div class="mt-3">
<h3>Rect</h3>
<input class="block mx-auto mb-2" type="color" v-model="pickColor" />
<button class="bg-green-400 hover:bg-green-500 rounded-md text-white px-3 py-1" @click="addRect">Add Rect</button>
</div>
<div class="mt-3">
<h3>Image</h3>
<input type="text" class="block w-full bg-white border border-slate-300 rounded-md px-3 py-1 mb-2" v-model="pickImage" placeholder="Image URL">
<input class="block file w-full mb-2" type="file" @change="onUploadImage">
<button class="bg-green-400 hover:bg-green-500 rounded-md text-white px-3 py-1" @click="addImage">
{{ imageLoading ? 'loading...' : 'Add Image' }}
</button>
</div>
<div class="grid grid-flow-row mt-3">
<button class="bg-blue-400 hover:bg-blue-500 rounded-md text-white px-3 py-1 mb-2" @click="onBringForward">bringForward</button>
<button class="bg-blue-400 hover:bg-blue-500 rounded-md text-white px-3 py-1 mb-2" @click="onSendBackward">sendBackward</button>
<button class="bg-blue-400 hover:bg-blue-500 rounded-md text-white px-3 py-1 mb-2" @click="onBringToFront">bringToFront</button>
<button class="bg-blue-400 hover:bg-blue-500 rounded-md text-white px-3 py-1" @click="onSendToBack">sendToBack</button>
</div>
</div>
</template>
<div class="max-w-xs mx-auto text-left" v-else>
Width:
<input class="block w-full bg-white border border-slate-300 rounded-md px-3 py-1 mb-3" v-model="size.width">
Height:
<input class="block w-full bg-white border border-slate-300 rounded-md px-3 py-1 mb-3" v-model="size.height">
Background:
<input class="block w-full bg-white border border-slate-300 rounded-md px-3 py-1 mb-3" v-model="size.background" placeholder="transparent by default">
<button class="bg-green-400 hover:bg-green-500 rounded-md text-white px-3 py-1" @click="onInitCanvas">Start</button>
</div>
</div>
</template>
<script>
var deleteIcon = 'data:image/svg+xml,%3Csvg xmlns="http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg" width="1em" height="1em" preserveAspectRatio="xMidYMid meet" viewBox="0 0 1024 1024"%3E%3Cpath fill="currentColor" d="M512 64C264.6 64 64 264.6 64 512s200.6 448 448 448s448-200.6 448-448S759.4 64 512 64zm165.4 618.2l-66-.3L512 563.4l-99.3 118.4l-66.1.3c-4.4 0-8-3.5-8-8c0-1.9.7-3.7 1.9-5.2l130.1-155L340.5 359a8.32 8.32 0 0 1-1.9-5.2c0-4.4 3.6-8 8-8l66.1.3L512 464.6l99.3-118.4l66-.3c4.4 0 8 3.5 8 8c0 1.9-.7 3.7-1.9 5.2L553.5 514l130 155c1.2 1.5 1.9 3.3 1.9 5.2c0 4.4-3.6 8-8 8z"%2F%3E%3C%2Fsvg%3E';
var img = document.createElement('img');
img.src = deleteIcon;
fabric.Object.prototype.transparentCorners = false;
fabric.Object.prototype.cornerColor = 'rgba(0, 0, 0, 0.5)';
fabric.Object.prototype.cornerStyle = 'circle';
fabric.Object.prototype.controls.deleteControl = new fabric.Control({
x: 0.5,
y: -0.5,
offsetY: -24,
cursorStyle: 'pointer',
mouseUpHandler: deleteObject,
render: renderIcon,
cornerSize: 24
});
function deleteObject(eventData, transform) {
var target = transform.target;
var canvas = target.canvas;
canvas.remove(target);
canvas.requestRenderAll();
}
function renderIcon(ctx, left, top, styleOverride, fabricObject) {
var size = this.cornerSize;
ctx.save();
ctx.translate(left, top);
ctx.rotate(fabric.util.degreesToRadians(fabricObject.angle));
ctx.drawImage(img, -size/2, -size/2, size, size);
ctx.restore();
}
export default {
name: 'FabricImageComposer',
data() {
return {
giveSize: false,
size: {
width: 300,
height: 500,
background: '',
},
imageLoading: false,
pickColor: '#e66465',
pickImage: '',
fileImage: null,
}
},
methods: {
onInitCanvas() {
this.giveSize = true;
this.$nextTick(() => this.initFabric())
},
initFabric() {
const vm = this
var canvas = this._canvas = new fabric.Canvas('c', {
width: vm.size.width,
height: vm.size.height,
backgroundColor: vm.size.background || false,
});
},
addRect() {
const vm = this
var rect = new fabric.Rect({
left: 0,
top: 0,
fill: vm.pickColor,
width: 100,
height: 100,
objectCaching: false,
stroke: 'transparent',
strokeWidth: 0,
});
this._canvas.add(rect);
this._canvas.setActiveObject(rect);
},
addImage() {
const vm = this
if (vm.imageLoading) return;
vm.imageLoading = true;
fabric.util.loadImage(this.pickImage, function (img) {
const width = 200;
const ratio = img.height / img.width;
var legimg = new fabric.Image(img, {
left: 0,
top: 0,
angle: 0,
opacity: 1,
scaleX: width / img.width,
scaleY: width / img.height * ratio
});
vm._canvas.add(legimg);
vm._canvas.setActiveObject(legimg);
vm.imageLoading = false;
vm.pickImage = '';
});
},
onUploadImage(e) {
const el = e.target;
const file = el.files[0];
const reader = new FileReader();
reader.onload = () => {
this.pickImage = reader.result;
el.value = '';
el.type = '';
el.type = 'file';
};
reader.readAsDataURL(file);
},
onSave() {
document.getElementById('c').toBlob(function(blob) {
saveAs(blob, 'image-composer.png');
});
},
onBringForward() {
const activeObj = this._canvas.getActiveObject();
activeObj.bringForward();
},
onSendBackward() {
const activeObj = this._canvas.getActiveObject();
activeObj.sendBackwards();
},
onBringToFront() {
const activeObj = this._canvas.getActiveObject();
activeObj.bringToFront();
},
onSendToBack() {
const activeObj = this._canvas.getActiveObject();
activeObj.sendToBack();
}
},
}
</script>
<style lang="scss">
.fabric-image-composer {
h1 {
text-align: center;
}
.canvas-container {
margin: auto;
}
.file {
$bg: rgb(129, 140, 248);
cursor: pointer;
&::-webkit-file-upload-button {
background: $bg;
border: none;
border-radius: 10px;
padding: 5px 10px;
color: #fff;
cursor: pointer;
&:hover {
background: darken($bg, 10%);
}
}
}
}
</style>