I want to mask the original image using alpha mask image. I can do alpha masking on image with the following code. But I want to be able to edit the mask with the brush, how can I do that? In theory if I paint the mask white it should be opaque, if I paint it black it should be
Tag: fabricjs
Fabric JS multiple object selection ignores movement isDisabled
I have set these following attributes to all of my objects on my Fabric JS canvas. However, when I select multiple objects by holding the shift key, these objects get movable again, but as a group, any idea how I disable this possibility as well? Answer In this way, you can disable the group selection but the objects will still
Fabric js – Set Canvas width and height to 100%
I am using the Fabric js 4.3.1 library and would like to be able to adapt the canvas area to its parent div #contCanvasLogo. I’ve made a few attempts but nothing works, the canvas keeps resizing by itself. This is my code but not working: Answer You can set the height and width by retrieving the data from the parent
Pass headers in fabric Image.fromURL function
I am using fabric.js Image.fromURL function to load the image to canvas. For now, the images are loading successfully without any issues. But now I have a requirement to pass headers for authentication purposes is there a way that I could pass headers into the “Image.fromURL” function or any other way I could incorporate my headers to it. Answer Image.fromUrl
FabricJS: Vertical Align text center
I am using fabricjs 1.5 and I am stuck on aligning the text in the middle of the line vertically. I am using this code to set the line height It changes the line height of text on canvas but text always remains at the top. I want it to be in the vertically middle. Please help. Answer You need
How to show the full SVG using Fabricjs?
First time user of FabricJs and I’m trying to load these SVG files using FabricJS as shown in their examples If you run the code snippet you will see that only the top part of the image is loaded instead of the entire SVG. I tried doing this with the other method where I create a new Image() and then
How to set canvas origin to center in fabricjs?
When I draw a circle on fabricjs canvas it always appears on bottom right corner even though I set the coordinates to center. How can I make the circle draw center of the canvas? Answer You can set drawing origin of the circle object to center, using originX and originY property.
Prevent Fabric js Objects from scaling out of the canvas boundary
I have been trying to keep an object (constructed in fabric js over a canvas) inside the boundaries at all the times. It has been achieved at moving and rotating it. I took help from Move object within canvas boundary limit for achieving this. But when I start to scale the object, it simply keeps on going out of boundary.
How to Create html table like structure using fabric js?
I am trying to build schema builder similar to vertabelo. I’m using fabric.js for interactions. How can i create html table like structure where i can add columns and their types as shown in the image. Answer Use Html Table inside svg as shown below and convert it into image and use it as fabric object
How to get the canvas-relative position of an object that is in a group?
Normally an object’s position relative to the canvas can be gotten from it’s .left and .top attributes, but these become relative to the group if the object is in a selection/group. Is there a way to get their position relative to the canvas? Answer When an object is inside a group, its coordinates relative to the canvas will depend on