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I've tried for the last few days without too much success to rotate, scale and translate shapes on the canvas. I've read everything I could find on internet about similar issues but still I cannot seem to be able to adapt it to my own problem.

If everything is drawn on the same scale, I can still drag and drop. If I rotate the shapes, then the mouseOver is messed up since the world coordinates don't correspond anymore with the shape coordinates. If I scale, then it's impossible to select any shape. I look at my code and do not understand what I'm doing wrong.

I read some really nice and detailed stackoverflow solutions to similar problems. For example, user @blindman67 made a suggestion of using a setTransform helper and a getMouseLocal helper for getting the coordinates of the mouse relative to the transformed shape.

inverse transform matrix

I spent some time with that and could not fix my issue. Here is an example of what I tried. Any suggestion is appreciated.

i try to do this xaml code programmatically

I am trying to figure out how I can determine which image a user has click on when the images are all in a FrameLayout and the view is inflated with an Adapter

The setItemClickListener for the Adapter is below: (The pos works in determining which element in the array was click, so first item in the list gets 0 and so on...):

I am stylizing my anchor tags and am using :before pseudo class. The problem is if a link wraps to the next line the :hover effect underline content does not wrap to the next line. Any suggestions on how this might be achieved? Thanks.

CSS:

I am using Xamarin Forms for Android. My Problem is with a Path UI Element. This UI Element has a ScaleTransform where the image is scaled 1.5x in X and Y direction. In addition it has a DataTrigger which changes the Fill and the Data properties according to the status of bool IsConnected. If IsConnected switches states the appropriate trigger is executed but the image loses its scale and stays smaller even if the state changes back.

This is my Xaml code:

The idea is to draw the bounding box as 2D corners on the screen after my DiretXTK model is displayed.

I got the bounding box corners form DirectXKT in a std::vector, so

My web project, using node.js / HTML / JavaScript, has a video player element, and I want the user to be able to click a button to play an MP4 file on the web page. How would I go about doing this?

Here is some sample code I have, where I have the video element and I can let the user navigate their files. Does the video file of the user have to be uploaded to my server? I want them to just play a video in their browser that they already have saved on their computer.

With other videos already in my project's file directory, I do video.src = ... to change between them. So I am hoping to figure something similar to play the user's own videos.

I have a button with arrows that is supposed to appear and move down when moused over. On Chrome and Firefox it works fine but when I open it up on Safari the arrows are too low- they aren't positioned correctly. I have heard about people specifying "top" and :left" but that doesn't seem to work for me. I don't know why this is but it seems to be due to the position: relative.
Code:

I am using Fabric js, where I have a canvas with rectangles, and want them to be restricted in scaling outside the borders of the canvas. The code I have does work in version 3.6.6, but not in 4.3.1. The code is exactly the same. In the changelog of fabric js I cant find anything related to my issue.

Is there somebody who can maybe explain why it does not work in the 4.3.1 version?

The problem is that in the newer version the rectangle is restricted in scaling to the opposite border, when scaled to one of the borders. For example; when you drag the rectangle to the center and then scale it to the right border, you cant scale it to the left border.

This is the 3.6.6 version where it does work

This is the 4.3.1 version where it does not work