What is the best way to determine the dimensions of a KonvaJs Stage in order to correctly pass them as the height/width parameters for the toImage function

Currently, I am using KonvaJs version 3.2.4 to work with the toImage function of the Stage Class. It seems that by default, toImage() only captures an image of the visible stage area. This is why there is a need to provide starting coordinates, height, and width in the config property to specify the area to be included in the image.

My main objective is to generate an image of the stage that encompasses all child shapes within it (for purposes like printing cover images). Is there a simple way to determine the actual area of the Stage being utilized? I envision having an outer boundary of the used space. Currently, all my shapes are contained in one view layer, and before using toImage, I ungroup them so that there are no nested children arrays beneath the view layer.

I attempted to iterate through all the children and use their x/y attributes to calculate minX, maxX, minY, maxY values. However, this method encounters problems when a shape is rotated since the x/y coordinates may not accurately represent the inner/outer limits of the shape due to the rotation. Users have the ability to rotate shapes using the standard Transformer tool.

Any advice on how to achieve this would be greatly appreciated!

javascriptvue.jscanvaskonvajs

Answer №1

If you want to find out the total size of any Konva node, you can make use of node.getClientRect(). Additionally, if you are looking to export a complete image of the stage, you can achieve that with the following code snippet:

stage.toImage({
  ...stage.getClientRect(),
  callback: img => {
    console.log(img);
  }
})

Check out the demo here: https://jsbin.com/behoyoyeda/1/edit?html,js,output

Similar questions

If you have not found the answer to your question or you are interested in this topic, then look at other similar questions below or use the search

The dropdown div does not activate when the image is clicked

When the image in the simple dropdown is clicked, it fails to activate the dropdown feature. This issue was encountered while working on a Shopify project, making it challenging to troubleshoot. To demonstrate the problem, I have re-created the scenario i ...

javascripthtmlcssdrop-down-menuonclick

I'm looking to instantiate a Backbone collection outside of a script - how can I do that?

I have created my backbone collection named "Events" with a model called "Event". I want to create the backbone collection in this manner: Check out my code below: <script src="<?php echo site_url(); ?>js/backbone-calendar.js"></script&g ...

phpjavascriptbackbone.js

I am seeking assistance with generating a printed list from the database

Struggling for two full days to successfully print a simple list from the database. Take a look at the current state of the code: function CategoriesTable() { const [isLoading, setLoading] = useState(true); let item_list = []; let print_list; useEffect(( ...

javascriptreactjsaxiosuse-state

Delete Entries in MongoDB Collection According to Unique User Pairs

I have a collection of messages stored in MongoDB and I need to keep only the latest 500 records for each pair of users. Users are identified by their sentBy and sentTo attributes. /* 1 */ { "_id" : ObjectId("5f1c1b00c62e9b9aafbe1d6c&quo ...

javascriptarraysmongodbsorting

When the enter key is pressed, scope.$watch() does not trigger, and location.path does not function as expected

I've encountered a peculiar problem with AngularJS that I need help with. Here's the situation: Using scope.watch to monitor text changes in a text field (searchloco). <input class="typeahead" ng-model="searchloco" data="{{varu}}" search-ba ...

javascriptangularjs

The children's className attribute can impact the parent element

As I work on creating a card object, I envision it with the className .card that is styled in CSS as follows: .card img{position:absolute; width:150px; height:160px} I want only the images inside my div to overlap each other while not affecting the divs ...

javascripthtmlcss

What is the process of creating a new array by grouping data from an existing array based on their respective IDs?

Here is the initial array object that I have: const data = [ { "order_id":"ORDCUTHIUJ", "branch_code":"MVPA", "total_amt":199500, "product_details":[ { ...

javascriptarraystypescriptexpress

Obtain the output of a single controller in a different controller within the Express framework

Seeking to invoke a function from one controller in another Controller1.js 2) Controller2.js Code within Controller1.js file: var Controller2= require('../controllers/Controller2.js'); exports.getlist = function (req, res, next) { Control ...

javascriptnode.jsexpress

Display an error popup if a server issue occurs

I'm considering implementing an Error modal to be displayed in case of a server error upon submitting a panel. I'm contemplating whether the appropriate approach would be within the catch statement? The basic code snippet I currently have is: u ...

javascriptreactjstypescripttry-catch

Search a location database using the user's current coordinates

Currently, I am working on a project that involves a database containing locations specified by longitude and latitude. Upon loading the index page, my goal is to fetch the user's location and then identify every point within a certain distance radius ...

javascriptpythonmysqlhtmlgeolocation

Difficulty arises when trying to extract specific information from an ajax response using the jQuery.filter

The code snippet below seems to be causing some trouble. It's supposed to filter HTML content that includes a div with the class "filtered_entries_box", but it's not working as expected. $.ajax({ "url" : "start.php", "type" : "POST", ...

javascriptjqueryhtmlajax

Ways to clear dropdown selection in Vue based on a specific condition?

I am currently developing a dropdown menu for selecting visit status options, which include "pending," "canceled," "rejected," and "approved." In the case of an approved visit status, I would like the dropdown selection to only display the options for "can ...

javascriptvue.jsvuejs3

Utilizing a dynamic ref in Vue using the composition API

While working with the composition API in Vue 3, I am trying to create a reference to a component dynamically. Typically, this would involve adding ref="name" to the template and then defining a ref using const name = ref(null). However, I am loo ...

javascriptvue.jsfrontendvuejs3

CSS Switchable Style Feature

I am in need of some assistance with the navigation on my website. You can find the current code at this link: http://jsfiddle.net/Sharon_J/cf2bm0vs/ Currently, when you click on the 'Plus' sign, the submenus under that category are displayed bu ...

javascriptjqueryhtmlcss

The argument labeled as 'State' cannot be assigned to a parameter labeled as 'never'

I've recently delved into using TypeScript with React. I attempted to incorporate it with the React useReducer hook, but I hit a roadblock due to an unusual error. Below is my code snippet: export interface ContractObj { company: string; ...

javascriptreactjstypescriptreact-hooks

Pause the jquery script when a key is pressed

Currently, I have a script that loads a php file within a div and automatically refreshes every 5 seconds. Check out the code below: $("#load_timeout").load("time_out.php"); var refreshId = setInterval(function() { $("#load_timeout").load('time_o ...

javascriptphpjqueryajax

Managing various types of click events on a single element

I'm working on a solution to attach 3 different handlers to an element without triggering each other. I found some guidance at https://v2.vuejs.org/v2/guide/events.html <div @click.ctrl="methodA" @click="methodB" @contextmenu.ct ...

vue.jsevent-handlingaddeventlistener

"Explore the Hong browser designed specifically for enhanced Ajax functionality

I made the decision to revamp my new job by incorporating Ajax into the mix. Here is the code snippet I used to load pages: html <html> <head> <meta charset="utf-8"> <title>Untitled Document</title> <link rel="stylesheet" ...

javascriptjqueryajax

I encountered an issue with route handlers in Next.js version 13.2. Sadly, they are not

I am trying to implement an API on my website with the endpoint /api/popular-movie. Here is an overview of my file structure: https://i.stack.imgur.com/e8Pf8.png Additionally, this is my route.ts code: import { NextResponse } from "next/server"; ...

javascriptreactjsapinext.jsfrontend

Is it possible to transform all values in arrays to 0s in JavaScript/p5.js during the copying process?

I’m struggling with a simple code where I want to store an array of arrays containing FFT audio data. It seems like there might be a JavaScript issue because when I try to push the array into another array called spectrums, all the values inside spectr ...

javascriptarraysprocessingfftp5.js