Create a visual representation after inserting

Question

Create a visual representation after inserting

I have created an input feature that allows me to paste images by using CTRL-V.

The process involves copying an image from the browser and pasting it into the input field using CTRL-V. The result is an image in base64 format. Is there a way to manipulate this image, transforming it to have a height and width of 600 pixels?

In other words, I want to resize the received image to be 600x600 pixels. I have attempted various methods utilizing Canvas but have not been successful.

Could someone provide assistance with this task?

DEMO

Code

  @HostListener("paste", ["$event"])

  onPaste(e: ClipboardEvent) {
    let clipboardData = e.clipboardData || (window as any).clipboardData;
    let pastedData = clipboardData.getData("text");
    console.log(pastedData)
  }

https://i.sstatic.net/4lcRk.png

javascript angular typescript canvas

Answer 1

Answer №1

Here is a method you can use for resizing images while preventing distortion. It involves creating a canvas element and using JavaScript to draw the image onto it. Make sure to check out the resources provided below for more information.


onPaste(e: ClipboardEvent) {
    let clipboardData = e.clipboardData || (window as any).clipboardData;
    let pastedData = clipboardData.getData("text");
    console.log(pastedData)
    let canvas = document.createElement("canvas")
    canvas.height = 600
    canvas.width = 600
    let ctx = canvas.getContext("2d")
    let img = new Image()
    img.onload = ()=>{
      ctx.drawImage( img, 0, 0, 600, 600 )
      pastedData = canvas.toDataURL('image/png')
      console.log(pastedData)
    }
    img.src = pastedData
    img.style.height ='600px'//this is not a good way to resize
    img.style.width = '600px'//high chance of distortion
}

Additional Resources:

Resize tool

Drawing Canvas Images

Answer 2

Here is a method you can use for resizing images while preventing distortion. It involves creating a canvas element and using JavaScript to draw the image onto it. Make sure to check out the resources provided below for more information.


onPaste(e: ClipboardEvent) {
    let clipboardData = e.clipboardData || (window as any).clipboardData;
    let pastedData = clipboardData.getData("text");
    console.log(pastedData)
    let canvas = document.createElement("canvas")
    canvas.height = 600
    canvas.width = 600
    let ctx = canvas.getContext("2d")
    let img = new Image()
    img.onload = ()=>{
      ctx.drawImage( img, 0, 0, 600, 600 )
      pastedData = canvas.toDataURL('image/png')
      console.log(pastedData)
    }
    img.src = pastedData
    img.style.height ='600px'//this is not a good way to resize
    img.style.width = '600px'//high chance of distortion
}

Additional Resources:

Resize tool

Drawing Canvas Images

Create a visual representation after inserting

Answer №1

Similar questions

Integrating modules in Angular 2

Incorporating nested maps in JSX for efficient data manipulation

"Canvas element's getContext method returning both WebGL2RenderingContext and RenderingContext - a conundrum for

Is CDATA insertion automatic in JavaScript within Yii framework?

Sending data to another page by selecting a list item

Transform a Python dictionary into a JavaScript object and be able to retrieve both the key and the value

How to Avoid the "Expression Changed After it has been Checked" Error?

Is it possible to convert a .gif file into a jpeg image format for mobile display on my Gatsby website?

Make the navigation bar stay at the top of the page when scrolling past another element with a top position of 100vh

What are the reasons behind the unforeseen outcomes when transferring cookie logic into a function?

Examples of using React tables with Material-UI, such as the Material-UI kitchen sink demo, will showcase how to

Add a checkbox element to a web API using ReactJS

Error: The function setDarkTheme is not defined

CSS :hover activates only when the mouse is in motion

How can I add an element to the DOM in React before the render() method is executed?

Struggling to transfer a specific row from a grid to a fresh window in extjs

Creating a PHP JSON response that incorporates an HTML layout is a dynamic

none of the statements within the JavaScript function are being executed

Ajax is not able to trigger a POST request to a PHP form

Exploring AngularJS $compile and the concept of scoping within JavaScript windows