Scrolling the chat screen
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What Does Scrolling Mean?
Scrolling is the sliding movement of images, video or text across a display screen either vertically or horizontally. Scrolling can be done with or without user intervention. This feature is provided by most applications and smart devices that display contents that are too big to fit entirely on the screen. Scrolling is considered one of the basic methods of navigation.
Techopedia Explains Scrolling
Many applications provide scrolling features that are tailored to the navigation needs or behavior of users. Scrolling can be animated or non-animated. In the case of video games, tile-based scrolling is widely used. Scrolling is usually done with the help of scroll bars located at the sides of an application’s window. It allows users to browse through long documents or Web pages.
Scrolling is typically accomplished on desktop and laptop computers with a mouse (often with a built-in scroll wheel) or a touch pad. With mobile devices, one usually uses a finger or a stylus to scroll.
What is scrolling the chat screen mean
How do you stop and resume the scrolling of the screen display?
We stop and resume the scrolling of the screen display with the PAGER variable.
How do you stop your screen from scrolling up and down?
You need to set correct resolution for your screen.
What us the process of moving different portions of a document on the screen into view?
Scrolling.
Horizontally Scrolling Chat Overlay
One thing I noticed while playing and streaming Star Wars Squadrons is how much of the viewspace is taken up by the player’s ship instruments and cockpit view. I like having a chat overlay on my streams and, with this UI design cramping the precious little verticle space, I wanted a way to dispaly the chat without encroaching on the viewport.
Requirements
The only thing needed to use these lines of custom CSS is the Restream.io Chat browser source embed, and a way to set custom CSS in the browser sources imported into your streaming software. I only have experience with OBS, so I’m not sure if it works in Xsplit or other streaming software.
The custom CSS also assumes that you’re using the default Restream.io Chat appearance options and embed options:
- Compact Mode: Unchecked
- Theme: Default
- Message Alignment: Top’
- Scale: 100%
It’s safe to change any of the other settings including hiding messages after a set amount of time, but if you change any of the ones listed above, the CSS may not work correctly for you.
Custom CSS
.chat-messages > .message-item:first-child {
display:none;
} /* Optional. All this does is remove the "Ready to receive messages" chat from Restream */
.chat-messages.reversed {
flex-direction: row;
flex-wrap: wrap-reverse;
justify-content:
flex-end;
}
.message-info {
height: auto;
margin-bottom: 0;
left: -5px
!important;
display: inline;
}
.message-item {
background-color: rgba(0,0,0,0.5) !important; /* Feel free to adjust this color; it's the background of the chat message box */
width: auto !important;
max-width: 49%;
margin-right: .5em;
height: 190px; /* Set this to be the same height as set in the browser source properties */
}
.message-sender {
display: inline;
vertical-align: inherit !important;
color: #D30595 !important; /* Feel free to adjust this color; it's the username of the chatter */
letter-spacing: normal !important;
font-weight: 600 !important;
font-size: 1em !important;
}
.message-time {
display: none;
}
.message-text {
display: inline;
}
Caveats
The custom CSS works well if you don’t mind the following issues:
- Long messages might not display the entirety of their content, due to the height and width limits set in the CSS. This is an aesthetic limitation and can be removed, but at that point you might as well just use the regular vertically-scrolling chat overlay.
- There’s no way to set multi-line breaks while also setting a dynamic message item box width, as far as I know. So a medium-length chat message won’t break off onto a new line until it reaches 49% of the browser source width, no matter how much vertical space is actually available.
Auto scroll to the bottom in a react chat application
Today we’ll show you how to auto scroll to the bottom in a react chat application. In this article, we will create a react app to simulate the chat application and automatically set the scroll position on the new message.
There are many packages available to achieve this functionality but we will use the DOMNodeInserted
JavaScript event to manage the scroll position in ReactJS.
Steps to implement chatbot auto scroll to the bottom
- Create a react application
- Create a chatbot design
- Write a function to generate dummy messages
- Manage auto scroll to the bottom
- Output
1. Create a react application
First, we will create a react application using the create-react-app
package. Run the following command to create a react app.
2. Create a chatbot design
Now, let’s create a simple chatbot design to simulate the functionality. We’ll consider the three parts such as header, messages and footer (input area) in the chatbot. Use the following code for the design.
3. Write a function to generate dummy messages
We have to write a function to generate dummy messages so we can simulate the chatbot responses. Check out the following code to generate messages.
4. Manage auto scroll to the bottom
To manage auto scroll to the bottom of the message list div, we will use the DOMNodeInserted
javascript event along with the refs
in React Hooks. Also, use the above function to send a dummy message every two seconds.
5. Output
Run the application and check the output in the browser.
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