12/28/2023 0 Comments Web example flutter widgets![]() Moreover, the nesting mode of widgets must meet certain requirements, so the efficiency of layout algorithms can be maintained. The design of widgets is relatively atomized, and they almost do not affect each other. Its various properties are not coupled and do not affect each other. Unlike CSS, the Flutter Widget is well-crafted with clear classification and features. Layout and Paint in the main thread are the most time-consuming and are mixed with the execution of JS code. I think the last two steps are relatively fast. The layout information is committed to the compositor thread layer by layer, and then divided into pieces and delivered to the GPU thread for drawing. After the parsed DOM node has been laid out, if the browser parses another tag, it will match the CSS style in this tag, apply the new style to the parsed DOM node, and calculate the layout all over again.Īfter the layout is complete, Paint will run. We need to consider factors, such as display:none, pseudo element, text nodes, and shadow dom. A DOM node does not necessarily correspond to a layout node. Then, the layout algorithm will traverse the layout tree multiple times and calculate the Rect of each node. The display characteristics of the nodes are different, and the types of generated LayoutObjects are also different. Then, the browser generates a layout tree based on the DOM tree with ComputedStyle. First, the browser first the HTML file and parses it. ![]() The rendering process of a CSS file in a browser includes four steps: loading, parsing, querying and applying the CSS file to DOM nodes, and calculating the layout. They are implemented by JavaScript (JS) in the production environment, so there is little chance to polish the CSS. The features are very powerful but not practical. With these features, you can use filters, draw Pikachu, create oil paintings, and make games. I think it was designed for AI, not for humans! All of these, coupled with the clip-path property, filter, and Houdini, make CSS increasingly powerful. Some of that coding is nearly impossible. The multi-column layout is a little more complex, and the CSS Grid is much more complex. However, CSS gradually included some difficult features. The classic box model is easy to learn, the text-related attributes are self-explanatory, and Flexbox is also very easy. Subsequent layout solutions, such as the CSS in JS frontend framework, XML description files, and Flutter, were deeply influenced by CSS even if they did not directly copy the features of CSS. There is no doubt that CSS is very efficient in describing the layout. This couple has been collaborating for 20 to 30 years and is still the most efficient among layout tools. HTML describes the structure of web pages, while CSS describes the representation of web pages. The original idea was born in 1994 and the first version was published in 1996. It is a markup language used to describe styles. Love and Peace: Feasibility of ConnectionĬSS is the abbreviation of cascading style sheets.Let's Battle! Comparison from Five Angles.The article is broken down into four parts: This article compares the differences between the layout principles of the Flutter Widget and CSS and shares the problems and solutions encountered in the connecting process. In my previous article titled, How to Remove Obstacles and Connect Flutter to the Web Ecosystem?, I mentioned how "the connection between CSS and the Flutter Widget is a tedious process and involves completeness problems." I gave the conclusion but did not give any reasons. Run your project with flutter run and select a browser, platform, or emulator to run your project.By Zhang Han (Menliu), Taobao Technology Department, Alibaba New Retail Class MyForm extends StatefulWidget 6 All set
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