viewerjs | JavaScript image viewer | Computer Vision library
kandi X-RAY | viewerjs Summary
kandi X-RAY | viewerjs Summary
JavaScript image viewer.
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Top functions reviewed by kandi - BETA
- Create a new Viewer .
- Get transform names .
- Get an image s natural sizes
- Add listener for event .
- Add a class name to an element .
- Remove an event listener .
- Get the max ratio for a set of pointers .
- Loop over data .
- Remove CSS class from element
- Toggles a class on an element .
viewerjs Key Features
viewerjs Examples and Code Snippets
Community Discussions
Trending Discussions on viewerjs
QUESTION
I have a Map of type
...ANSWER
Answered 2022-Feb-23 at 07:06TreeMap
can be sorted by keys, and LinkedHashMap
maintains the insertion order.
Most likely, you need just to sort the output of the map contents in the desired order, which can be implemented like this using simple Comparator.comparing
and Comparator.reverseOrder()
:
QUESTION
I have two S3 buckets.
my-js-bucket
has the ViewerJS library filesmy-file-bucket
has the files I want to view
I added the following to the CORS for my-file-bucket:
...ANSWER
Answered 2021-Mar-20 at 22:28All I had to do is add "HEAD" to the AllowedMethods.
QUESTION
I wanted to show a slide in odp format using ViewerJs.
I converted a file in Microsoft Office's PowerPoint application from the ".pptx" extension to the ".odp" extension.
I manually replaced "ohm2013.pptx" with "ohm2013.odp" and "ohm2013.ods" and added it to my project.
and my code;
...ANSWER
Answered 2021-Feb-24 at 19:40I found how to do this job webodf requires an http-server for files with odp extensions and this must be run in the path of http server viewerjs.
I did this with the nodejs command prompt like this
npm install http-server -g
http-server "C:\Users\subUser\source\repos\Works\OdpViewerJs\ViewerJS"
and the result
QUESTION
I'm trying to figure out how to get the elements in e.g. a JS gallery that loads its images after they have been clicked on.
I'm using a demo of Viewer.js as an example. The element with the classes .viewer-move.viewer-transition
isn't in the initial DOM. After clicking on an image the element is available but if I use $eval
the string is empty. If I open the console in the Puppeteer browser and execute document.querySelector('.viewer-move.viewer-transition')
I get the element but in the code the element isn't available.
ANSWER
Answered 2020-Jul-22 at 06:11Since you have to wait until it is available, the most convenient method would be to use await page.waitForSelector(".viewer-move.viewer-transition")
which would wait util the element is added to DOM, although this has the caveat that this continues execution the moment that the element is added to DOM, even if it is empty/hidden.
QUESTION
I am writing an image viewer JS component and i'm currently stuck on the calculation for the zooming in. I figured out the zooming in or out on one point (instead of just the center) using css transforms. I'm not using transform-origin because there will be multiple points of zooming in or out, and the position must reflect that. However, that's exactly where i'm stuck. The algorithm i'm using doesn't calculate the offset correctly after trying to zoom in (or out) when the mouse has actually moved from the initial position and I can't for the life of me figure out what's missing in the equation.
The goal is whenever the mouse is moved to another position, the whole image should scale with that position as the origin, meaning the image should scale but the point the mouse was over should remain in its place. For reference, look at this JS component. Load an image, zoom in somewhere, move your mouse to another position and zoom in again.
Here's a pen that demonstrates the issue in my code: https://codepen.io/Emberfire/pen/jOWrVKB
I'd really apreciate it if someone has a clue as to what i'm missing :)
Here's the HTML
...ANSWER
Answered 2020-Jun-14 at 19:09Thinking a little, I understood where the algorithm failed. Your calculation is focused on the information of offsetx and offsety of the image, the problem is that you were dealing with scale and with scale the data like offsetx and offsety are not updated, they saw constants. So I stopped using scale to enlarge the image using the "width" method. It was also necessary to create two variables 'accx' and 'accy' to receive the accumulated value of the translations
QUESTION
I am looking for ways to present a PDF file in the browser but make it not downloadable or printable.
If someone really goes through all the trouble to disable the JavaScript library or anything like that, that is fine. This is more for the reason that the content within the PDF will be updated regularly so if you download it it will be out of date by the next day.
I also cannot rely on marking the pdf as protected or encryption as a reasonable way to accomplish this.
If you have any library recommendations or anything else it would be appreciated. I am currently exploring if it is feasible using PDF.js and ViewerJS
...ANSWER
Answered 2020-May-27 at 19:43I was able to find a solution using ViewerJS and this CSS. The CSS shows a blank page when you try to print (ViewerJS already distorts it to a non-printable state) and ViewerJS prevents you from downloading as a PDF file and instead tries to save as an HTML file.
This meets the requirements of making it just inconvenient enough to discourage users from trying to download the file since the file is always easily accessible on almost any page of the site.
https://gist.github.com/ActuallyConnor/2a80403c7827dd1f78077fb2b5b7e785
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