Web Front-end
CSS Tutorial
Why doesn't the parent container display scrollbars when the Canvas width overflows?
Why doesn't the parent container display scrollbars when the Canvas width overflows?
Apr 05, 2025 pm 10:03 PM
FAQs and solutions for Canvas canvas overflowing the parent container and scroll bars do not display
When drawing with Canvas, you often encounter a layout problem: the parent container has overflow: auto , and the scroll bar is displayed when the expected content exceeds the expected content, but the actual effect does not match the expected one. For example, when the width of the Canvas exceeds the parent container, the parent container will be expanded, and when the height exceeds the parent container, the scroll bar can be displayed normally. This article will conduct in-depth analysis of this issue and provide solutions.
Problem description:
A parent container sets width: 100% , height: 100% and overflow: auto attributes. The setDimensions method of Fabric.js is used internally to set the width and height of Canvas. When the Canvas height exceeds the parent container height, the vertical scroll bar is displayed normally; but when the Canvas width exceeds the parent container width, the parent container width will be extended, but the horizontal scroll bar will not appear. why is that?
Problem analysis and solutions:
The core of the problem is that the parent container width uses 100% of the percentage. width: 100% means that the parent container width will be adaptively adjusted according to its content (Canvas). When the Canvas width exceeds the expected width of the parent container, the parent container automatically expands the width to accommodate the Canvas, so there is no horizontal scroll bar.
Solution:
Set fixed width: Set a fixed width value for the parent container (for example
width: 800px). In this way, when the Canvas width exceeds this fixed value, the parent container displays a horizontal scroll bar according tooverflow: autoattribute.Use viewport width: Use
width: 100vw. This way, the parent container width will always be consistent with the browser viewport width, ensuring that horizontal scroll bars can appear when the Canvas width exceeds the viewport width.
In short, the parent container must have a clear width that will not change dynamically according to the content in order to correctly achieve horizontal overflow scrolling. Only when the width of the parent container is fixed and the Canvas width exceeds this fixed width, overflow: auto can effectively display the horizontal scroll bar.
The above is the detailed content of Why doesn't the parent container display scrollbars when the Canvas width overflows?. For more information, please follow other related articles on the PHP Chinese website!
Hot AI Tools
Undress AI Tool
Undress images for free
Undresser.AI Undress
AI-powered app for creating realistic nude photos
AI Clothes Remover
Online AI tool for removing clothes from photos.
Clothoff.io
AI clothes remover
Video Face Swap
Swap faces in any video effortlessly with our completely free AI face swap tool!
Hot Article
Hot Tools
Notepad++7.3.1
Easy-to-use and free code editor
SublimeText3 Chinese version
Chinese version, very easy to use
Zend Studio 13.0.1
Powerful PHP integrated development environment
Dreamweaver CS6
Visual web development tools
SublimeText3 Mac version
God-level code editing software (SublimeText3)
Hot Topics
Binance Exchange Official Website Portal Binance Official Website Portal
Jul 04, 2025 pm 11:06 PM
The latest version of Binance is v2.102.5, and the update tutorial is: 1. Click the download link in the web page; 2. Authorize the installation permission of "Allow installation from unknown sources"; 3. Find the downloaded APk and click to install; 4. Click the installed application to open it.
Binance Exchange app Android version Binance Exchange Chinese version installation package direct
Jul 04, 2025 pm 10:54 PM
The latest version of Binance is v2.102.5, and the update tutorial is: 1. Click the download link in the web page; 2. Authorize the installation permission of "Allow installation from unknown sources"; 3. Find the downloaded APk and click to install; 4. Click the installed application to open it.
The latest version of virtual currency exchange v6.129.0 official latest Android APP
Jul 07, 2025 pm 09:57 PM
The Virtual Currency Exchange APP is a professional digital asset trading application, providing users with safe and convenient digital currency trading services. The new v6.129.0 version has upgraded the performance and operation experience, aiming to bring a smoother trading experience.
Binance Official Portal Global Crypto Asset Trading Core Portal
Jul 04, 2025 pm 11:03 PM
The latest version of Binance is v2.102.5, and the update tutorial is: 1. Click the download link in the web page; 2. Authorize the installation permission of "Allow installation from unknown sources"; 3. Find the downloaded APk and click to install; 4. Click the installed application to open it.
How to trade BTC with your mobile phone? Complete operation process of Binance App
Jul 07, 2025 pm 08:18 PM
How to conduct BTC transactions through Binance App? The answers are as follows: 1. Download and install the Binance App, complete registration and identity verification, and recharge funds; 2. Open the App to search for BTC, select trading pairs such as BTC/USDT, and be familiar with price charts and entrustment types; 3. Choose Buy or Sell, set limit orders or market orders and submit an order; 4. Check the order status on the entrustment page, view records through historical orders, and manage digital assets on the asset page.
Binance official website link Binance official website entrance address
Jul 04, 2025 pm 11:18 PM
The latest version of Binance is 2.101.8, and the update tutorial is: 1. Click the download link in the web page; 2. Authorize the installation permission of "Allow installation from unknown sources"; 3. Find the downloaded APk and click to install; 4. Click the installed application to open it.
The latest official version of virtual currency trading platform v6.129.0 Android app 2025 new version
Jul 07, 2025 pm 10:15 PM
The latest official version of the virtual currency trading platform v6.129.0 is a professional and secure digital asset trading application created for Android users. It provides rich market conditions, convenient trading functions and multiple security protection, and is committed to providing users with a first-class trading experience.
The popularity of the currency circle has returned, why do smart people have begun to quietly increase their positions? Look at the trend from the on-chain data and grasp the next round of wealth password!
Jul 09, 2025 pm 08:30 PM
As the market conditions pick up, more and more smart investors have begun to quietly increase their positions in the currency circle. Many people are wondering what makes them take decisively when most people wait and see? This article will analyze current trends through on-chain data to help readers understand the logic of smart funds, so as to better grasp the next round of potential wealth growth opportunities.
