Have such code :
var $canvas = $("#canvas");
var canvas = new fabric.Canvas('canvas', {
hoverCursor: 'pointer',
selection: false
});
var rect1 = new fabric.Rect({
width: 200,
height: 100,
left: 0,
top: 50,
angle: 30,
fill: 'rgba(255,0,0,0.5)'
});
canvas.add(rect1);
$canvas.droppable({
drop: dragDrop,
over: enterIn,
});
function enterIn(e, ui) {
event.preventDefault();
rect1.width = 400;
}
function dragDrop(e, ui) {
var element = ui.draggable;
var imgInstance = new fabric.Image(element.data("image"), {
left: x,
top: y,
});
canvas.add(imgInstance);
}
Problem:
rect1 width change is applied only after drop on canvas.
But I tested that enterIn function is working fine.
Could you advise something?
Related
I'm trying to insert the Fabric.js library to test some things with:
<script src='https://unpkg.com/fabric#latest/dist/fabric.js'></script>
But apparently dosen't work...
I'm just trying to do a basic free canvas like:
var canvas = this.__canvas = new fabric.Canvas('c', {
isDrawingMode: true
});
var rect = new fabric.Rect({
top: 100,
left: 100,
width: 60,
height: 70,
fill: 'red',
});
canvas.add(rect);
canvas.renderAll();
But still nothing appears on my project, i can't do or paint anything..
Anyone with some answers?
I think you need canvas element the html in order for fabricjs to work.
There are two ways to fix achieve this
Option 1. - Add canvas element in html.
<canvas id="c"/>
var canvas = this.__canvas = new fabric.Canvas('c', {
isDrawingMode: true
});
var rect = new fabric.Rect({
top: 100,
left: 100,
width: 60,
height: 70,
fill: 'red',
});
canvas.add(rect);
canvas.renderAll();
canvas {
border-style: groove;
}
<canvas id="c" />
<script src='https://unpkg.com/fabric#latest/dist/fabric.js'></script>
Option 2. - Add canvas element in html using javascript.
var mycanvas = document.createElement("canvas");
mycanvas.id = "mycanvas";
document.body.appendChild(mycanvas);
var mycanvas = document.createElement("canvas");
mycanvas.id = "c";
document.body.appendChild(mycanvas);
var canvas = this.__canvas = new fabric.Canvas('c', {
isDrawingMode: true
});
var rect = new fabric.Rect({
top: 100,
left: 100,
width: 60,
height: 70,
fill: 'red',
});
canvas.add(rect);
canvas.renderAll();
canvas {
border-style: groove;
}
<script src='https://unpkg.com/fabric#latest/dist/fabric.js'></script>
I want to repeat background when i resize it.
Here is my code, i've tried.
var canvas = new fabric.Canvas('c', {
clipTo: function(ctx) {
ctx.rect(1000, 1000, 400, 400);
}
});
fabric.Image.fromURL('data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAADIAAAAyCAIAAACRXR/mAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsMAAA7DAcdvqGQAAAASdEVYdFNvZnR3YXJlAEdyZWVuc2hvdF5VCAUAAADLSURBVFhH7ZnBCoMwEET9/68URBHSNj0UolFoI+aQickKlT05jz0MGQIPkb2kadu3ta42ff/MTtLRazct55bajOMjO0lHr920vnWMMTGV0GuphVALoRaiqNV1dq4TLsdUIrTe+z0fw+ndmEo0w/D61AmXYyqh1179WjGVuNLyl0eohVALuZ8Wtzwgt9zyiNxSC6EWQi1EUYtbHpBbbnlEbqmFUAuhFqKoxS0PyC23PCK31EKohVAL0dXK3vLSOX0TnKZ1z8fw/3uiW37L27QIZwrV4gAAAABJRU5ErkJggg==', function(img) {
var patternSourceCanvas = new fabric.StaticCanvas();
patternSourceCanvas.add(img);
var pattern = new fabric.Pattern({
source: function() {
patternSourceCanvas.setDimensions({
width: img.getWidth(),
height: img.getHeight()
});
return patternSourceCanvas.getElement();
},
repeat: 'repeat'
});
var rectangle = new fabric.Rect({
fill: pattern,
left: 1150,
top: 1150,
width: img.getWidth(),
height: img.getHeight()
});
canvas.add(rectangle);
canvas.renderAll();
});
canvas.on('object:scaling', function(e) {
if (e.target != null) {
console.log(e.target);
}
});
body {
overflow: hidden;
}
.container {
top: -1000px;
left: -1000px;
position: relative;
z-index: 1;
}
<script src="https://cdnjs.cloudflare.com/ajax/libs/fabric.js/1.7.17/fabric.min.js"></script>
<div class="container">
<canvas id="c" width="2400" height="2400"></canvas>
</div>
How can I make, background repeat?
Here is jsFiddle
#Ngọc Hòa we'll have to use object:scaling event to scale the object back to 1x and change size of the object to make repeat the pattern instead of scaling it. See it here
var canvas = new fabric.Canvas('c');
fabric.Object.prototype.transparentCorners = false;
var padding = 0;
fabric.Image.fromURL('data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAADIAAAAyCAIAAACRXR/mAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsMAAA7DAcdvqGQAAAASdEVYdFNvZnR3YXJlAEdyZWVuc2hvdF5VCAUAAADLSURBVFhH7ZnBCoMwEET9/68URBHSNj0UolFoI+aQickKlT05jz0MGQIPkb2kadu3ta42ff/MTtLRazct55bajOMjO0lHr920vnWMMTGV0GuphVALoRaiqNV1dq4TLsdUIrTe+z0fw+ndmEo0w/D61AmXYyqh1179WjGVuNLyl0eohVALuZ8Wtzwgt9zyiNxSC6EWQi1EUYtbHpBbbnlEbqmFUAuhFqKoxS0PyC23PCK31EKohVAL0dXK3vLSOX0TnKZ1z8fw/3uiW37L27QIZwrV4gAAAABJRU5ErkJggg==', function(img) {
img.scaleToWidth(50);
var patternSourceCanvas = new fabric.StaticCanvas();
patternSourceCanvas.add(img);
patternSourceCanvas.renderAll();
var pattern = new fabric.Pattern({
source: function() {
patternSourceCanvas.setDimensions({
width: img.getScaledWidth() + padding,
height: img.getScaledHeight() + padding
});
patternSourceCanvas.renderAll();
return patternSourceCanvas.getElement();
},
repeat: 'repeat'
});
var rect = new fabric.Rect({
width: 250,
height: 250,
fill: pattern,
objectCaching: false
});
canvas.add(rect);
rect.center().setCoords();
});
canvas.on('object:scaling', function(e) {
if (e.target != null) {
console.log(e.target);
var obj = e.target;
var height = obj.height * obj.scaleY;
var width = obj.width * obj.scaleX;
obj.height = height;
obj.width = width;
obj.scaleX = 1;
obj.scaleY = 1;
}
});
https://jsfiddle.net/dotriz/ajsdmg4s/
I am trying to use FabricJS to animate any object when it is selected.
So when selected an object 'shrinks' from center on mouse:down (10px off the width and 10px off the height)
And on mouse:up it returns to the original size and state.
I don't know if I need to use FabricJS built in animation for this. I wanted it to grow and shrink linear though.
Right now my Fiddle does pretty much nothing, I can't get far enough without errors.
Does anyone have any examples of this or similar? I couldn't find anything about changing the appearance of FabricJS objects on mouse:up/:down when selected.
(function() {
var canvas = this.__canvas = new fabric.Canvas('canvas');
var touchedObject;
var rect = new fabric.Rect({
left: 50,
top: 50,
width: 50,
height: 50,
fill: 'blue',
hasBorders: false,
});
canvas.add(rect);
var rect2 = new fabric.Rect({
left: 190,
top: 50,
width: 50,
height: 50,
fill: 'red',
hasBorders: false,
});
canvas.add(rect2);
canvas.on('object:selected', function(evn) {
/*animate({
'width': ,
'height':
}, {
duration: 200,
});*/
});
canvas.renderAll();
})();
You could accomplish that using the fabric.util.animate() method.
(function() {
var canvas = this.__canvas = new fabric.Canvas('canvas');
var touchedObject;
var rect = new fabric.Rect({
left: 50,
top: 50,
width: 50,
height: 50,
fill: '#07C',
hasBorders: false,
});
canvas.add(rect);
// disable controls and set hover-cursor
canvas.forEachObject(function(o) {
o.hasBorders = o.hasControls = false;
});
canvas.hoverCursor = 'pointer';
// mouse events
canvas.on('mouse:down', function(e) {
animate(e, 1);
});
canvas.on('mouse:up', function(e) {
animate(e, 0);
});
function animate(e, p) {
if (e.target) {
fabric.util.animate({
startValue: e.target.get('height'),
endValue: e.target.get('height') + (p ? -10 : 50 - e.target.height),
duration: 200,
onChange: function(v) {
e.target.setHeight(v);
canvas.renderAll();
},
onComplete: function() {
e.target.setCoords();
}
});
fabric.util.animate({
startValue: e.target.get('width'),
endValue: e.target.get('width') + (p ? -10 : 50 - e.target.width),
duration: 200,
onChange: function(v) {
e.target.setWidth(v);
canvas.renderAll();
},
onComplete: function() {
e.target.setCoords();
}
});
fabric.util.animate({
startValue: e.target.get('top'),
endValue: e.target.get('top') + (p && 5),
duration: 200,
onChange: function(v) {
e.target.setTop(v);
canvas.renderAll();
},
onComplete: function() {
e.target.setCoords();
}
});
fabric.util.animate({
startValue: e.target.get('left'),
endValue: e.target.get('left') + (p && 5),
duration: 200,
onChange: function(v) {
e.target.setLeft(v);
canvas.renderAll();
},
onComplete: function() {
e.target.setCoords();
}
});
}
}
canvas.renderAll();
})();
#canvas {
border: 1px solid lightgrey;
}
<script src="https://cdnjs.cloudflare.com/ajax/libs/fabric.js/1.4.0/fabric.min.js"></script>
<canvas id="canvas" width="150"></canvas>
I am having issues getting drag, drop and delete to work on a FabricJS using JQuery.
Select an object and click delete is working with no issues.
Here's a demo of my code Fiddle
I can get drag, drop and delete to work outside of FabricJS (Just dragging unrelated elements to delete) but I'm having difficulty combing the two.
Maybe I need to incorporate the delete button inside the canvas in order for the 'drop' to work? When I try this the #delete element disappears.
JS
var canvas = new fabric.Canvas('canvas');
$("#delete").click(function() {
deleteObjects();
});
//Test objects on the canvas
//Circle
var circle = new fabric.Circle({
left: 200,
top: 150,
radius: 30,
fill: "#ff0072"
});
circle.hasRotatingPoint = true;
canvas.add(circle);
// adding triangle
var triangle = new fabric.Triangle({
left: 130,
top: 150,
strokeWidth: 1,
width: 70,
height: 60,
fill: '#00b4ff',
selectable: true,
originX: 'center'
});
triangle.hasRotatingPoint = true;
canvas.add(triangle);
//Select all objects
function deleteObjects() {
var activeObject = canvas.getActiveObject(),
activeGroup = canvas.getActiveGroup();
if (activeObject) {
canvas.remove(activeObject);
}
}
//Drag and drop delete
$(function() {
$('#delete').droppable({
drop: function(event, ui) {
deleteObjects();
}
});
});
HTML
<section class="canvas__container">
<canvas id="canvas" width="400" height="400"></canvas>
<div id="delete">♻</div>
</section>
(I didn't paste my CSS as that's not particularly relevant)
This should get you close:
var bin;
var selectedObject;
fabric.Image.fromURL('data:image/png;base64,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', function(img) {
img.set({
left: 174,
top: 329,
selectable: false
});
bin = img;
canvas.add(img, circle, triangle);
});
canvas.on('object:selected', function(evn) {
selectedObject = evn.target;
})
canvas.on('mouse:up', function(evn) {
var x = evn.e.offsetX;
var y = evn.e.offsetY;
if (x > bin.left && x < (bin.left + bin.width) &&
y > bin.top && y < (bin.top + bin.height)) {
canvas.remove(selectedObject);
}
});
Here's your JSFiddle updated, https://jsfiddle.net/rekrah/jgruwse0/.
Let me know if you have any further questions.
I am using Fabric.js and jQuery UI for a drag and drop scene creator. When I drag and drop an image into the canvas the image becomes blurry/pixelated and appears to be zoomed in. I've been searching Stackoverflow and Google forever and can't find any solutions. I'd appreciate any suggestions on how to fix it!
Here is my code:
// HTML
<canvas id="scene"></canvas>
// Draggable setup
$('.scene-item').draggable({
helper: 'clone',
appendTo: 'body',
containment: 'window',
scroll: false,
zIndex: 9999
});
// Drop Setup
var canvas = new fabric.Canvas('scene');
canvas.setDimensions({
width: '800px',
height: '500px'
}, {
cssOnly: true
});
document.getElementById("scene").fabric = canvas;
canvas.on({
'object:moving': function(e) {
e.target.opacity = 0.5;
},
"object:modified": function(e) {
e.target.opacity = 1;
}
});
$('#scene').droppable({
drop: function(e, ui) {
if ($(e.target).attr('id') === 'scene') {
var pointer = canvas.getPointer();
fabric.Image.fromURL(ui.draggable[0].currentSrc, function (img) {
console.log(img);
img.set({
left: pointer.x - 20,
top: pointer.y - 20,
width: 52,
height: 52,
scale: 0.1
});
//canvas.clear();
canvas.add(img);
canvas.renderAll();
});
}
}
});
This is what the images look like on and off the canvas:
Here is a demo jsfiddle.net/dmLr6cgx/1
I figured out the problem. I had to replace:
canvas.setDimensions({
width: '800px',
height: '500px'
}, {
cssOnly: true
});
with
canvas.setHeight(500);
canvas.setWidth(800);
canvas.renderAll();
And now it works fine.